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581 Commits

Author SHA1 Message Date
Emirhan TALA
a489d85f2d feat(table): deprecate SegmentSize on table (#842)
This adds for table:

- Added new flex method with flex field
- Deprecated segment_size method and removed segment_size field
- Updated documentation
- Updated tests
2024-01-19 17:58:12 +01:00
Valentin271
065b6b05b7 docs(terminal): document buffer diffing better (#852) 2024-01-19 17:44:50 +01:00
Josh McKinney
1e755967c5 feat(layout): increase default cache size to 500 (#850)
This is a somewhat arbitrary size for the layout cache based on adding
the columns and rows on my laptop's terminal (171+51 = 222) and doubling
it for good measure and then adding a bit more to make it a round
number. This gives enough entries to store a layout for every row and
every column, twice over, which should be enough for most apps. For
those that need more, the cache size can be set with
`Layout::init_cache()`.

Fixes: https://github.com/ratatui-org/ratatui/issues/820
2024-01-19 15:35:33 +01:00
Linda_pp
1d3fbc1b15 perf(buffer)!: apply SSO technique to text buffer in buffer::Cell (#601)
Use CompactString instead of String to store the Cell::symbol field.
This saves reduces the size of memory allocations at runtime.
2024-01-19 04:50:42 -08:00
Emirhan TALA
330a899eac docs(examples): update table example and table.tape (#840)
In table.rs
- added scrollbar to the table
- colors changed to use style::palette::tailwind
- now colors can be changed with keys (l or →) for the next color, (h or
←) for the previous color
- added a footer for key info

For table.tape
- typing speed changed to 0.75s from 0.5s
- screen size changed to fit
- pushed keys changed to show the current example better

Fixes: https://github.com/ratatui-org/ratatui/issues/800
2024-01-19 03:26:09 -08:00
Emirhan TALA
405a125c82 feat: add wide and tall proportional border set (#848)
Adds `PROPORTIONAL_WIDE` and `PROPORTIONAL_TALL` border sets.

`symbols::border::PROPORTIONAL_WIDE`
```
▄▄▄▄
█xx█
█xx█
▀▀▀▀
```

`symbols::border::PROPORTIONAL_TALL`
```
█▀▀█
█xx█
█xx█
█▄▄█
```

Fixes: https://github.com/ratatui-org/ratatui/issues/834
2024-01-19 00:24:49 -08:00
bblsh
b3a57f3dff fix(list): Modify List and List example to support saving offsets. (#667)
The current `List` example will unselect and reset the position of a
list.

This PR will save the last selected item, and updates `List` to honor
its offset, preventing the list from resetting when the user
`unselect()`s a `StatefulList`.
2024-01-19 09:17:39 +01:00
Josh McKinney
2819eea82b feat(layout): add Position struct (#790)
This stores the x and y coordinates (columns and rows)

- add conversions from Rect
- add conversion with Size to Rect
- add Rect::as_position
2024-01-18 14:07:36 +01:00
Josh McKinney
41de8846fd docs(examples): document incompatible examples better (#844)
Examples often take advantage of unreleased API changes, which makes
them not copy-paste friendly.
2024-01-18 01:56:06 -08:00
Valentin271
68d5783a69 feat(text): add style and alignment (#807)
Fixes #758, fixes #801

This PR adds:

- `style` and `alignment` to `Text`
- impl `Widget` for `Text`
- replace `Text` manual draw to call for Widget impl

All places that use `Text` have been updated and support its new
features expect paragraph which still has a custom implementation.
2024-01-17 18:54:53 +01:00
Orhun Parmaksız
d49bbb2590 chore(ci): update the job description for installing cargo-nextest (#839) 2024-01-17 18:08:06 +01:00
Josh McKinney
fd4703c086 refactor(block): move padding and title into separate files (#837) 2024-01-17 06:18:36 -08:00
Emirhan TALA
0df935473f feat(Padding): add new constructors for padding (#828)
Adds `proportional`, `symmetric`, `left`, `right`, `top`, and `bottom`
constructors for Padding struct.

Proportional is 
```
/// **NOTE**: Terminal cells are often taller than they are wide, so to make horizontal and vertical
/// padding seem equal, doubling the horizontal padding is usually pretty good.
```

Fixes: https://github.com/ratatui-org/ratatui/issues/798
2024-01-17 04:50:08 -08:00
Dheepak Krishnamurthy
9df6cebb58 feat: Table column calculation uses layout spacing (#824)
This uses the new `spacing` feature of the `Layout` struct to allocate
columns spacing in the `Table` widget.
This changes the behavior of the table column layout in the following
ways:

1. Selection width is always allocated.
- if a user does not want a selection width ever they should use
`HighlightSpacing::Never`
2. Column spacing is prioritized over other constraints
- if a user does not want column spacing, they should use
`Table::new(...).column_spacing(0)`

---------

Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
2024-01-16 21:51:25 -05:00
Dheepak Krishnamurthy
f299463847 feat: Add one eighth wide and tall border sets (#831)
This PR adds the
[`McGugan`](https://www.willmcgugan.com/blog/tech/post/ceo-just-wants-to-draw-boxes/)
border set, which allows for tighter borders.

For example, with the `flex` example you can get this effect (top is
mcgugan wide, bottom is mcgugan tall):

<img width="759" alt="image"
src="https://github.com/ratatui-org/ratatui/assets/1813121/756bb50e-f8c3-4eec-abe8-ce358058a526">

<img width="759" alt="image"
src="https://github.com/ratatui-org/ratatui/assets/1813121/583485ef-9eb2-4b45-ab88-90bd7cb14c54">

As of this PR, `MCGUGAN_WIDE` has to be styled manually, like so:

```rust
            let main_color = color_for_constraint(*constraint);
            let cell = buf.get_mut(block.x, block.y + 1);
            cell.set_style(Style::reset().fg(main_color).reversed());
            let cell = buf.get_mut(block.x, block.y + 2);
            cell.set_style(Style::reset().fg(main_color).reversed());
            let cell = buf.get_mut(block.x + block.width.saturating_sub(1), block.y + 1);
            cell.set_style(Style::reset().fg(main_color).reversed());
            let cell = buf.get_mut(block.x + block.width.saturating_sub(1), block.y + 2);
            cell.set_style(Style::reset().fg(main_color).reversed());

```

`MCGUGAN_TALL` has to be styled manually, like so:

```rust
            let main_color = color_for_constraint(*constraint);
            for x in block.x + 1..(block.x + block.width).saturating_sub(1) {
                let cell = buf.get_mut(x, block.y);
                cell.set_style(Style::reset().fg(main_color).reversed());
                let cell = buf.get_mut(x, block.y + block.height - 1);
                cell.set_style(Style::reset().fg(main_color).reversed());
            }

```
2024-01-16 21:03:06 -05:00
Josh McKinney
4d262d21cb refactor(widget): move borders to widgets/borders.rs (#832) 2024-01-16 16:16:42 -08:00
Dheepak Krishnamurthy
ae6a2b0007 feat: Add spacing feature to flex example (#830)
This adds the `spacing` using `+` and `-` to the flex example
2024-01-16 17:19:23 +01:00
Dheepak Krishnamurthy
f71bf18297 fix: bug with flex stretch with spacing and proportional constraints (#829)
This PR fixes a bug with layouts when using spacing on proportional
constraints.
2024-01-16 12:35:58 +01:00
Emirhan TALA
cddf4b2930 feat: implement Display for Text, Line, Span (#826)
Issue: https://github.com/ratatui-org/ratatui/issues/816

This PR adds:

`std::fmt::Display` for `Text`, `Line`, and `Span` structs.

Display implementation displays actual content while ignoring style.
2024-01-16 08:52:20 +01:00
Valentin271
813f707892 refactor(example): improve constraints and flex examples (#817)
This PR is a follow up to
https://github.com/ratatui-org/ratatui/pull/811.

It improves the UI of the layouts by

- thoughtful accessible color that represent priority in constraints
resolving
- using QUADRANT_OUTSIDE symbol set for block rendering
- adding a scrollbar
- panic handling
- refactoring for readability

to name a few. Here are some example gifs of the outcome:


![constraints](https://github.com/ratatui-org/ratatui/assets/381361/8eed34cf-e959-472f-961b-d439bfe3324e)


![flex](https://github.com/ratatui-org/ratatui/assets/381361/3195a56c-9cb6-4525-bc1c-b969c0d6a812)

---------

Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
2024-01-15 20:56:40 -08:00
Valentin271
48b0380cb3 docs(scrollbar): complete scrollbar documentation (#823) 2024-01-15 18:37:55 +01:00
Absolutex
c959bd2881 fix(calendar): CalendarEventStore panic (#822)
`CalendarEventStore::today()` panics if the system's UTC offset cannot
be determined. In this circumstance, it's better to use `now_utc`
instead.
2024-01-15 17:07:47 +01:00
Dheepak Krishnamurthy
5131c813ce feat: Add layout spacing (#821)
This adds a `spacing` feature for layouts.

Spacing can be added between items of a layout.
2024-01-15 16:39:00 +01:00
Dheepak Krishnamurthy
11e4f6a0ba docs: Adds better documentation for constraints and flex 📚 (#818) 2024-01-14 16:58:58 -05:00
Dheepak Krishnamurthy
cc6737b8bc fix: make SpaceBetween with one element Stretch 🐛 (#813)
When there's just one element, `SpaceBetween` should do the same thing
as `Stretch`.
2024-01-14 18:13:49 +01:00
Valentin271
3e7810a2ab fix(example): increase layout cache size (#815)
This was causing very bad performances especially on scrolling.
It's also a good usage demonstration.
2024-01-14 18:10:12 +01:00
Dheepak Krishnamurthy
fc0879f98d chore(layout): comment tests that may fail on occasion (#814)
These fails seem to fail on occasion, locally and on CI.

This issue will be revisited in the PR on constraint weights:
https://github.com/ratatui-org/ratatui/pull/788
2024-01-14 17:47:48 +01:00
Valentin271
bb5444f618 refactor(example): add scroll to flex example (#811)
This commit adds `scroll` to the flex example. It also adds more examples to showcase how constraints interact. It improves the UI to make it easier to understand and short terminal friendly.

<img width="380" alt="image" src="https://github.com/ratatui-org/ratatui/assets/1813121/30541efc-ecbe-4e28-b4ef-4d5f1dc63fec"/>

---------

Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>
2024-01-14 10:49:45 -05:00
Valentin271
e0aa6c5e1f refactor(chart): replace deprecated apply (#812)
Fixes #793
2024-01-14 15:37:34 +01:00
Dheepak Krishnamurthy
1746a61659 docs: Update links to templates repository 📚 (#810)
This PR updates links to the `templates` repository.
2024-01-14 13:05:54 +01:00
Valentin271
7a8af8da6b fix: update templates links (#808) 2024-01-13 15:40:44 -08:00
Josh McKinney
dfd6db988f feat(demo2): add destroy mode to celebrate commit 1000! (#809)
```shell
cargo run --example demo2 --features="crossterm widget-calendar"
```

Press `d` to activate destroy mode and Enjoy!

![Destroy
Demo2](1d39444e3d/examples/demo2-destroy.gif)

Vendors a copy of tui-big-text to allow us to use it in the demo.
2024-01-13 15:13:50 -08:00
Josh McKinney
151db6ac7d chore: add commit footers to git-cliff config (#805)
Fixes: https://github.com/orhun/git-cliff/issues/297
2024-01-13 02:13:09 -08:00
Dheepak Krishnamurthy
de97a1f1da feat: Add flex to layout
This PR adds a new way to space elements in a `Layout`.

Loosely based on
[flexbox](https://css-tricks.com/snippets/css/a-guide-to-flexbox/), this
PR adds a `Flex` enum with the following variants:

- Start
- Center
- End
- SpaceAround
- SpaceBetween

<img width="380" alt="image" src="https://github.com/ratatui-org/ratatui/assets/1813121/b744518c-eae7-4e35-bbc4-fe3c95193cde">

It also adds two more variants, to make this backward compatible and to
make it replace `SegmentSize`:

- StretchLast (default in the `Flex` enum, also behavior matches old
  default `SegmentSize::LastTakesRemainder`)
- Stretch (behavior matches `SegmentSize::EvenDistribution`)

The `Start` variant from above matches `SegmentSize::None`.

This allows `Flex` to be a complete replacement for `SegmentSize`, hence
this PR also deprecates the `segment_size` constructor on `Layout`.
`SegmentSize` is still used in `Table` but under the hood `segment_size`
maps to `Flex` with all tests passing unchanged.

I also put together a simple example for `Flex` layouts so that I could
test it visually, shared below:

https://github.com/ratatui-org/ratatui/assets/1813121/c8716c59-493f-4631-add5-feecf4bd4e06
2024-01-13 01:56:27 -08:00
Dheepak Krishnamurthy
9a3815b66d feat: Add Constraint::Fixed and Constraint::Proportional (#783) 2024-01-12 21:11:15 -05:00
Dheepak Krishnamurthy
425a65140b feat: Add comprehensive tests for Length interacting with other constraints (#802) 2024-01-12 20:40:43 -05:00
multisn8
fe06f0c7b0 feat(serde): support TableState, ListState, and ScrollbarState (#723)
TableState, ListState, and ScrollbarState can now be serialized and deserialized
using serde.

```rust
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
struct AppState {
    list_state: ListState,
    table_state: TableState,
    scrollbar_state: ScrollbarState,
}

let app_state = AppState::default();
let serialized = serde_json::to_string(app_state);

let app_state = serde_json::from_str(serialized);
```
2024-01-12 16:13:35 -08:00
Christian Stefanescu
43b2b57191 docs: fix typo in Table widget description (#797) 2024-01-12 21:11:56 +01:00
Valentin271
50b81c9d4e fix(examples/scrollbar): title wasn't displayed because of background reset (#795) 2024-01-12 17:53:35 +01:00
Dheepak Krishnamurthy
2b4aa46a6a docs: GitHub admonition syntax for examples README.md (#791)
* docs: GitHub admonition syntax for examples README.md

* docs: Add link to stable release
2024-01-11 21:08:54 -05:00
Josh McKinney
e1e85aa7af feat(style): add material design color palette (#786)
The `ratatui::style::palette::material` module contains the Google 2014
Material Design palette.

See https://m2.material.io/design/color/the-color-system.html#tools-for-picking-colors
for more information.

```rust
use ratatui::style::palette::material::BLUE_GRAY;
Line::styled("Hello", BLUE_GRAY.c500);
```
2024-01-11 19:22:57 +01:00
Josh McKinney
bf67850739 feat(style): add tailwind color palette (#787)
The `ratatui::style::palette::tailwind` module contains the default
Tailwind color palette. This is useful for styling components with
colors that match the Tailwind color palette.

See https://tailwindcss.com/docs/customizing-colors for more information
on Tailwind.

```rust
use ratatui::style::palette::tailwind::SLATE;
Line::styled("Hello", SLATE.c500);
```
2024-01-11 10:07:53 -08:00
Josh McKinney
1561d64c80 feat(layout): add Rect -> Size conversion methods (#789)
- add Size::new() constructor
- add Rect::as_size()
- impl From<Rect> for Size
- document and add tests for Size
2024-01-11 17:39:53 +01:00
Josh McKinney
ffd5fc79fc feat(color): add Color::from_u32 constructor (#785)
Convert a u32 in the format 0x00RRGGBB to a Color.

```rust
let white = Color::from_u32(0x00FFFFFF);
let black = Color::from_u32(0x00000000);
```
2024-01-11 04:23:16 -08:00
Josh McKinney
34648941d4 docs(examples): add warning about examples matching the main branch (#778) 2024-01-11 08:44:23 +01:00
Eric Lunderberg
c69ca47922 feat(table)!: Collect iterator of Row into Table (#774)
Any iterator whose item is convertible into `Row` can now be
collected into a `Table`.

Where previously, `Table::new` accepted `IntoIterator<Item = Row>`, it
now accepts `IntoIterator<Item: Into<Row>>`.

BREAKING CHANGE:
The compiler can no longer infer the element type of the container
passed to `Table::new()`.  For example, `Table::new(vec![], widths)`
will no longer compile, as the type of `vec![]` can no longer be
inferred.
2024-01-10 17:32:58 -08:00
Eric Lunderberg
f29c73fb1c feat(tabs): accept Iterators of Line in constructors (#776)
Any iterator whose item is convertible into `Line` can now be
collected into `Tabs`.

In addition, where previously `Tabs::new` required a `Vec`, it can now
accept any object that implements `IntoIterator` with an item type
implementing `Into<Line>`.

BREAKING CHANGE:

Calls to `Tabs::new()` whose argument is collected from an iterator
will no longer compile.  For example,
`Tabs::new(["a","b"].into_iter().collect())` will no longer compile,
because the return type of `.collect()` can no longer be inferred to
be a `Vec<_>`.
2024-01-10 17:16:44 -08:00
Dheepak Krishnamurthy
f2eab71ccf fix: broken tests in table.rs (#784)
* fix: broken tests in table.rs

* fix: Use default instead of raw
2024-01-10 19:57:38 +01:00
Josh McKinney
6645d2e058 fix(table)!: ensure that default and new() match (#751)
In https://github.com/ratatui-org/ratatui/pull/660 we introduced the
segment_size field to the Table struct. However, we forgot to update
the default() implementation to match the new() implementation. This
meant that the default() implementation picked up SegmentSize::default()
instead of SegmentSize::None.

Additionally the introduction of Table::default() in an earlier PR,
https://github.com/ratatui-org/ratatui/pull/339, was also missing the
default for the column_spacing field (1).

This commit fixes the default() implementation to match the new()
implementation of these two fields by implementing the Default trait
manually.

BREAKING CHANGE: The default() implementation of Table now sets the
column_spacing field to 1 and the segment_size field to
SegmentSize::None. This will affect the rendering of a small amount of
apps.
2024-01-10 17:16:03 +01:00
Josh McKinney
2faa879658 feat(table): accept Text for highlight_symbol (#781)
This allows for multi-line symbols to be used as the highlight symbol.

```rust
let table = Table::new(rows, widths)
    .highlight_symbol(Text::from(vec![
        "".into(),
        " █ ".into(),
        " █ ".into(),
        "".into(),
    ]));
```
2024-01-10 17:11:37 +01:00
Eric Lunderberg
eb79256cee feat(widgets): Collect iterator of ListItem into List (#775)
Any iterator whose item is convertible into `ListItem` can now be
collected into a `List`.

```rust
let list: List = (0..3).map(|i| format!("Item{i}")).collect();
```
2024-01-10 00:06:03 -08:00
Josh McKinney
388aa467f1 docs: update crate, lib and readme links (#771)
Link to the contributing, changelog, and breaking changes docs at the
top of the page instead of just in in the main part of the doc. This
makes it easier to find them.

Rearrange the links to be in a more logical order.

Use link refs for all the links

Fix up the CI link to point to the right workflow
2024-01-08 23:52:47 -08:00
Valentin271
8dd177a051 fix: fix PR write permission to upload unsigned commit comment (#770) 2024-01-08 16:26:15 +01:00
Prisacaru Bogdan-Paul
bbf2f906fb feat(rect.rs): implement Rows and Columns iterators in Rect (#765)
This enables iterating over rows and columns of a Rect. In tern being able to use that with other iterators and simplify looping over cells.
2024-01-08 15:51:19 +01:00
Valentin271
c24216cf30 chore: add comment on PRs with unsigned commits (#768) 2024-01-08 04:30:06 -08:00
Valentin271
5db895dcbf chore(deps): update termion to v3.0 (#767)
See Termion changelog at https://gitlab.redox-os.org/redox-os/termion#200-to-300-guide
2024-01-08 11:38:41 +01:00
Dheepak Krishnamurthy
c50ff08a63 feat: Add frame count (#766) 2024-01-08 03:51:53 -05:00
Valentin271
06141900b4 fix(cd): fix grepping the last release (#762) 2024-01-07 16:14:16 +01:00
Valentin271
fab943b61a chore(contributing): add deprecation notice guideline (#761) 2024-01-07 14:44:51 +01:00
Valentin271
a67815e138 fix(chart): exclude unnamed datasets from legend (#753)
A dataset with no name won't display an empty line anymore in the legend.
If no dataset have name, then no legend is ever displayed.
2024-01-07 13:21:38 +01:00
Valentin271
bd6b91c958 refactor!: make patch_style & reset_style chainable (#754)
Previously, `patch_style` and `reset_style` in `Text`, `Line` and `Span`
 were using a mutable reference to `Self`. To be more consistent with
 the rest of `ratatui`, which is using fluent setters, these now take
 ownership of `Self` and return it.
2024-01-07 12:58:13 +01:00
Josh McKinney
5aba988fac refactor(terminal): extract types to files (#760)
Fields on Frame that were private are now pub(crate).
2024-01-07 12:53:16 +01:00
Eric Lunderberg
e64e194b6b feat(table): Implement FromIterator for widgets::Row (#755)
The `Row::new` constructor accepts a single argument that implements
`IntoIterator`.  This commit adds an implementation of `FromIterator`,
as a thin wrapper around `Row::new`.  This allows `.collect::<Row>()`
to be used at the end of an iterator chain, rather than wrapping the
entire iterator chain in `Row::new`.
2024-01-06 20:23:38 -08:00
Valentin271
bc274e2bd9 refactor(block)!: remove deprecated title_on_bottom (#757)
`Block::title_on_bottom` was deprecated in v0.22. Use `Block::title` and `Title::position` instead.
2024-01-06 14:26:02 -08:00
Josh McKinney
f13fd73d9e feat(layout): add Rect::clamp() method (#749)
* feat(layout): add a Rect::clamp() method

This ensures a rectangle does not end up outside an area. This is useful
when you want to be able to dynamically move a rectangle around, but
keep it constrained to a certain area.

For example, this can be used to implement a draggable window that can
be moved around, but not outside the terminal window.

```rust
let window_area = Rect::new(state.x, state.y, 20, 20).clamp(area);
state.x = rect.x;
state.y = rect.y;
```

* refactor: use rstest to simplify clamp test

* fix: use rstest description instead of string

test layout::rect::tests::clamp::case_01_inside ... ok
test layout::rect::tests::clamp::case_02_up_left ... ok
test layout::rect::tests::clamp::case_04_up_right ... ok
test layout::rect::tests::clamp::case_05_left ... ok
test layout::rect::tests::clamp::case_03_up ... ok
test layout::rect::tests::clamp::case_06_right ... ok
test layout::rect::tests::clamp::case_07_down_left ... ok
test layout::rect::tests::clamp::case_08_down ... ok
test layout::rect::tests::clamp::case_09_down_right ... ok
test layout::rect::tests::clamp::case_10_too_wide ... ok
test layout::rect::tests::clamp::case_11_too_tall ... ok
test layout::rect::tests::clamp::case_12_too_large ... ok

* fix: less ambiguous docs for this / other rect

* fix: move rstest to dev deps
2024-01-05 20:38:30 +01:00
Josh McKinney
fe84141119 docs(layout): document the difference in the split methods (#750)
* docs(layout): document the difference in the split methods

* fix: doc suggestion
2024-01-05 20:19:53 +01:00
Josh McKinney
fb93db0730 docs(examples): simplify docs using new layout methods (#731)
Use the new `Layout::horizontal` and `vertical` constructors and
`Rect::split_array` through all the examples.
2024-01-05 07:45:14 -08:00
Valentin271
23f6938498 feat(block): add Block::bordered (#736)
This avoid creating a block with no borders and then settings Borders::ALL. i.e.

```diff
- Block::default().borders(Borders::ALL);
+ Block::bordered();
```
2024-01-05 12:19:49 +01:00
Josh McKinney
98bcf1c0a5 feat(layout): add Rect::split method (#729)
This method splits a Rect and returns a fixed-size array of the
resulting Rects. This allows the caller to use array destructuring
to get the individual Rects.

```rust
use Constraint::*;
let layout = &Layout::vertical([Length(1), Min(0)]);
let [top, main] = area.split(&layout);
```
2024-01-05 03:13:57 -08:00
Josh McKinney
803a72df27 feat(table): accept Into<Constraint> for widths (#745)
This allows Table constructors to accept any type that implements
Into<Constraint> instead of just AsRef<Constraint>. This is useful when
you want to specify a fixed size for a table columns, but don't want to
explicitly create a Constraint::Length yourself.

```rust
Table::new(rows, [1,2,3])
Table::default().widths([1,2,3])
```
2024-01-04 22:41:48 -08:00
Josh McKinney
0494ee52f1 feat(layout): accept Into<Constraint> for constructors (#744)
This allows Layout constructors to accept any type that implements
Into<Constraint> instead of just AsRef<Constraint>. This is useful when
you want to specify a fixed size for a layout, but don't want to
explicitly create a Constraint::Length yourself.

```rust
Layout::new(Direction::Vertical, [1, 2, 3]);
Layout::horizontal([1, 2, 3]);
Layout::vertical([1, 2, 3]);
Layout::default().constraints([1, 2, 3]);
```
2024-01-04 22:36:37 -08:00
Josh McKinney
6d15b2570f refactor(layout): move the remaining types (#743)
- alignment -> layout/alignment.rs
- corner -> layout/corner.rs
- direction -> layout/direction.rs
- size -> layout/size.rs
2024-01-04 22:35:12 -08:00
Josh McKinney
659460e19c refactor(layout): move SegmentSize to layout/segment_size.rs (#742) 2024-01-04 20:53:57 -08:00
Josh McKinney
ba036cd579 refactor(layout): move Layout to layout/layout.rs (#741) 2024-01-04 20:43:00 -08:00
Josh McKinney
8724aeb9e7 refactor(layout): move Margin to margin.rs (#740) 2024-01-04 20:34:42 -08:00
Josh McKinney
da6c299804 refactor: extract layout::Constraint to file (#739) 2024-01-04 20:13:11 -08:00
Orhun Parmaksız
50374b2456 docs(backend): fix broken book link (#733) 2024-01-03 07:23:59 -05:00
Akiomi Kamakura
49df5d4626 docs(example): fix markdown syntax for note (#730) 2024-01-02 17:20:50 -08:00
Josh McKinney
7ab12ed8ce feat(layout): add horizontal and vertical constructors (#728)
* feat(layout): add vertical and horizontal constructors

This commit adds two new constructors to the `Layout` struct, which
allow the user to create a vertical or horizontal layout with default
values.

```rust
let layout = Layout::vertical([
    Constraint::Length(10),
    Constraint::Min(5),
    Constraint::Length(10),
]);

let layout = Layout::horizontal([
    Constraint::Length(10),
    Constraint::Min(5),
    Constraint::Length(10),
]);
```
2024-01-02 15:59:33 -08:00
Valentin271
b459228e26 feat(termwiz): add From termwiz style impls (#726)
Important note: this also fixes a wrong mapping between ratatui's gray
and termwiz's grey. `ratatui::Color::Gray` now maps to
`termwiz::color::AnsiColor::Silver`
2024-01-02 13:19:14 -08:00
Josh McKinney
8f56fabcdd feat: accept Color and Modifier for all Styles (#720)
* feat: accept Color and Modifier for all Styles

All style related methods now accept `S: Into<Style>` instead of
`Style`.
`Color` and `Modifier` implement `Into<Style>` so this is allows for
more ergonomic usage. E.g.:

```rust
Line::styled("hello", Style::new().red());
Line::styled("world", Style::new().bold());

// can now be simplified to

Line::styled("hello", Color::Red);
Line::styled("world", Modifier::BOLD);
```

Fixes https://github.com/ratatui-org/ratatui/issues/694

BREAKING CHANGE: All style related methods now accept `S: Into<Style>`
instead of `Style`. This means that if you are already passing an
ambiguous type that implements `Into<Style>` you will need to remove
the `.into()` call.

`Block` style methods can no longer be called from a const context as
trait functions cannot (yet) be const.

* feat: add tuple conversions to Style

Adds conversions for various Color and Modifier combinations

* chore: add unit tests
2023-12-31 10:01:06 -08:00
Josh McKinney
a62632a947 refactor(buffer): split buffer module into files (#721) 2023-12-29 10:00:50 -08:00
Antonio Yang
f025d2bfa2 feat(table): Add Table::footer and Row::top_margin methods (#722)
* feat(table): Add a Table::footer method

Signed-off-by: Antonio Yang <yanganto@gmail.com>

* feat(table): Add a Row::top_margin method

- add Row::top_margin
- update table example

Signed-off-by: Antonio Yang <yanganto@gmail.com>

---------

Signed-off-by: Antonio Yang <yanganto@gmail.com>
2023-12-29 07:44:41 -08:00
Josh McKinney
63645333d6 refactor(table): split table into multiple files (#718)
At close to 2000 lines of code, the table widget was getting a bit
unwieldy. This commit splits it into multiple files, one for each
struct, and one for the table itself.

Also refactors the table rendering code to be easier to maintain.
2023-12-27 20:43:01 -08:00
Josh McKinney
5d410c6895 feat(line): implement Widget for Line (#715)
This allows us to use Line as a child of other widgets, and to use
Line::render() to render it rather than calling buffer.set_line().

```rust
frame.render_widget(Line::raw("Hello, world!"), area);
// or
Line::raw("Hello, world!").render(frame, area);
```
2023-12-27 20:30:47 +01:00
Orhun Parmaksız
8d77b734bb chore(ci): use cargo-nextest for running tests (#717)
* chore(ci): use cargo-nextest for running tests

* refactor(make): run library tests before doc tests
2023-12-27 10:50:56 -08:00
Josh McKinney
9574198958 refactor(line): reorder methods for natural reading order (#713) 2023-12-27 05:10:21 -08:00
Josh McKinney
ee54493163 fix(buffer): don't panic in set_style (#714)
This fixes a panic in set_style when the area to be styled is
outside the buffer's bounds.
2023-12-27 10:19:30 +01:00
Josh McKinney
c977293f14 feat(line)!: add style field, setters and docs (#708)
- The `Line` struct now stores the style of the line rather than each
  `Span` storing it.
- Adds two new setters for style and spans
- Adds missing docs

BREAKING CHANGE: `Line::style` is now a field of `Line` instead of being
stored in each `Span`.
2023-12-27 10:10:41 +01:00
Josh McKinney
b0ed658970 fix(table): render missing widths as equal (#710)
Previously, if `.widths` was not called before rendering a `Table`, no
content would render in the area of the table. This commit changes that
behaviour to default to equal widths for each column.

Fixes #510.

Co-authored-by: joshcbrown <80245312+joshcbrown@users.noreply.github.com>
2023-12-26 15:06:44 +01:00
Josh McKinney
37c183636b feat(span): implement Widget on Span (#709)
This allows us to use Span as a child of other widgets, and to use
Span::render() to render it rather than calling buffer.set_span().

```rust
frame.render_widget(Span::raw("Hello, world!"), area);
// or
Span::raw("Hello, world!").render(frame, area);
// or even
"Hello, world!".green().render(frame, area);
```
2023-12-26 15:05:57 +01:00
a-kenji
e67d3c64e0 docs(table): fix typo (#707) 2023-12-25 15:19:29 +01:00
Orhun Parmaksız
4f2db82a77 feat(color): use the FromStr implementation for deserialization (#705)
The deserialize implementation for Color used to support only the enum
names (e.g. Color, LightRed, etc.) With this change, you can use any of
the strings supported by the FromStr implementation (e.g. black,
light-red, #00ff00, etc.)
2023-12-23 19:38:53 +01:00
Valentin271
d6b851301e docs(examples): refactor chart example to showcase scatter (#703) 2023-12-22 16:57:26 -08:00
Josh McKinney
b7a479392e chore(ci): bump alpha release for breaking changes (#495)
Automatically detect breaking changes based on commit messages
and bump the alpha release number accordingly.

E.g. v0.23.1-alpha.1 will be bumped to v0.24.0-alpha.0 if any commit
since v0.23.0 has a breaking change.
2023-12-21 13:30:25 +01:00
a-kenji
e1cc849554 docs(breaking): fix typo (#702) 2023-12-18 16:06:49 +01:00
Orhun Parmaksız
7f5884829c chore(release): prepare for 0.25.0 (#699) 2023-12-18 13:06:28 +01:00
Orhun Parmaksız
a15c3b2660 docs: remove deprecated table constructor from breaking changes (#698) 2023-12-17 15:29:19 +01:00
Josh McKinney
41c44a4af6 docs(frame): add docs about resize events (#697) 2023-12-17 01:36:25 -08:00
Josh McKinney
1b8b6261e2 docs(examples): add animation and FPS counter to colors_rgb (#583) 2023-12-17 01:34:59 -08:00
Valentin271
5bf4f52119 feat: implement From trait for termion to Style related structs (#692)
* feat(termion): implement from termion color

* feat(termion): implement from termion style

* feat(termion): implement from termion `Bg` and `Fg`
2023-12-16 20:48:44 +01:00
Valentin271
f4c8de041d docs(chart): document chart module (#696) 2023-12-16 11:41:12 -08:00
Valentin271
910ad00059 chore(rustfmt): enable format_code_in_doc_comments (#695)
This enables more consistently formatted code in doc comments,
especially since ratatui heavily uses fluent setters.

See https://rust-lang.github.io/rustfmt/?version=v1.6.0#format_code_in_doc_comments
2023-12-16 13:01:07 +01:00
Valentin271
b282a06932 refactor!: remove items deprecated since 0.10 (#691)
Remove `Axis::title_style` and `Buffer::set_background` which are deprecated since 0.10
2023-12-15 16:22:34 +01:00
Lee Wonjoon
b8f71c0d6e feat(widgets/chart): add option to set the position of legend (#378) 2023-12-15 04:31:58 -08:00
Dheepak Krishnamurthy
113b4b7a4e docs: Rename template links to remove ratatui from name 📚 (#690) 2023-12-15 07:44:44 +01:00
Valentin271
b82451fb33 refactor(examples): add vim binding (#688) 2023-12-14 19:11:48 -08:00
Valentin271
4be18aba8b refactor(readme): reference awesome-ratatui instead of wiki (#689)
* refactor(readme): link awesome-ratatui instead of wiki

The apps wiki moved to awesome-ratatui

* Update README.md

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

* Update README.md

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

* Update README.md

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

---------

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
2023-12-14 20:45:36 +01:00
Valentin271
ebf1f42942 feat(style): implement From trait for crossterm to Style related structs (#686) 2023-12-14 13:25:36 +01:00
Josh McKinney
2169a0da01 docs(examples): Add example of half block rendering (#687)
This is a fun example of how to render big text using half blocks
2023-12-13 18:25:21 -08:00
Josh McKinney
d118565ef6 chore(table): cleanup docs and builder methods (#638)
- Refactor the `table` module for better top to bottom readability by
putting types first and arranging them in a logical order (Table, Row,
Cell, other).

- Adds new methods for:
  - `Table::rows`
  - `Row::cells`
  - `Cell::new`
  - `Cell::content`
  - `TableState::new`
  - `TableState::selected_mut`

- Makes `HighlightSpacing::should_add` pub(crate) since it's an internal
  detail.

- Adds tests for all the new methods and simple property tests for all
  the other setter methods.
2023-12-13 15:53:01 +01:00
YeungKC
aaeba2709c fix: truncate table when overflow (#685)
This prevents a panic when rendering an empty right aligned and rightmost table cell
2023-12-12 18:29:07 +01:00
Josh McKinney
d19b266e0e feat: add Constraint helpers (e.g. from_lengths) (#641)
Adds helper methods that convert from iterators of u16 values to the
specific Constraint type. This makes it easy to create constraints like:

```rust
// a fixed layout
let constraints = Constraint::from_lengths([10, 20, 10]);

// a centered layout
let constraints = Constraint::from_ratios([(1, 4), (1, 2), (1, 4)]);
let constraints = Constraint::from_percentages([25, 50, 25]);

// a centered layout with a minimum size
let constraints = Constraint::from_mins([0, 100, 0]);

// a sidebar / main layout with maximum sizes
let constraints = Constraint::from_maxes([30, 200]);
```
2023-12-10 18:01:55 -08:00
Valentin271
f767ea7d37 refactor(List): start_corner is now direction (#673)
The previous name `start_corner` did not communicate clearly the intent of the method.
A new method `direction` and a new enum `ListDirection` were added.

`start_corner` is now deprecated
2023-12-10 16:50:13 -08:00
Josh McKinney
0576a8aa32 refactor(layout): to natural reading order (#681)
Structs and enums at the top of the file helps show the interaction
between the types without having to find each type in between longer
impl sections.

Also moved the try_split function into the Layout impl as an associated
function and inlined the `layout::split()` which just called try_split.
This makes the code a bit more contained.
2023-12-09 13:45:41 -08:00
Josh McKinney
03401cd46e ci: fix untrusted input in pr check workflow (#680) 2023-12-09 06:49:26 -08:00
Valentin271
f69d57c3b5 fix(Rect): fix underflow in the Rect::intersection method (#678) 2023-12-09 06:27:41 -08:00
Josh McKinney
2a87251152 docs(security): add security policy (#676)
* docs: Create SECURITY.md

* Update SECURITY.md

Co-authored-by: Orhun Parmaksız <orhun@archlinux.org>

---------

Co-authored-by: Orhun Parmaksız <orhun@archlinux.org>
2023-12-09 11:39:57 +01:00
Valentin271
aef495604c feat(List)!: List::new now accepts IntoIterator<Item = Into<ListItem>> (#672)
This allows to build list like

```
List::new(["Item 1", "Item 2"])
```

BREAKING CHANGE: `List::new` parameter type changed from `Into<Vec<ListItem<'a>>>`
to `IntoIterator<Item = Into<ListItem<'a>>>`
2023-12-08 14:20:49 -08:00
Tyler Bloom
8bfd6661e2 feat(Paragraph): add line_count and line_width unstable helper methods
This is an unstable feature that may be removed in the future
2023-12-07 18:14:56 +01:00
Valentin271
3ec4e24d00 docs(list): add documentation to the List widget (#669)
Adds documentation to the List widget and all its sub components like `ListState` and `ListItem`
2023-12-07 11:44:50 +01:00
Val Lorentz
7ced7c0aa3 refactor: define struct WrappedLine instead of anonymous tuple (#608)
It makes the type easier to document, and more obvious for users
2023-12-06 22:18:02 +01:00
tieway59
dd22e721e3 chore: Correct "builder methods" in docs and add must_use on widgets setters (#655)
Fixes #650

This PR corrects the "builder methods" expressing to simple `setters`
(see #650 #655), and gives a clearer diagnostic notice on setters `must_use`.

`#[must_use = "method moves the value of self and returns the modified value"]`

Details:

    docs: Correct wording in docs from builder methods

    Add `must_use` on layout setters

    chore: add `must_use` on widgets fluent methods

        This commit ignored `table.rs` because it is included in other PRs.

    test(gauge): fix test
2023-12-06 15:39:52 +01:00
Josh McKinney
4424637af2 feat(span): add setters for content and style (#647) 2023-12-05 01:17:53 -08:00
Josh McKinney
37c70dbb8e fix(table)!: Add widths parameter to new() (#664)
This prevents creating a table that doesn't actually render anything.

Fixes: https://github.com/ratatui-org/ratatui/issues/537

BREAKING CHANGE: Table::new() now takes an additional widths parameter.
2023-12-04 15:22:52 -08:00
Orhun Parmaksız
91c67eb100 docs(github): update code owners (#666)
onboard @Valentin271 as maintainer
2023-12-04 13:53:26 -08:00
Alan Somers
e49385b78c feat(table): Add a Table::segment_size method (#660)
It controls how to distribute extra space to an underconstrained table.
The default, legacy behavior is to leave the extra space unused.  The
new options are LastTakesRemainder which gets all space to the rightmost
column that can used it, and EvenDistribution which divides it amongst
all columns.

Fixes #370
2023-12-04 13:51:02 -08:00
Josh McKinney
6b2efd0f6c feat(layout): Accept IntoIterator for constraints (#663)
Layout and Table now accept IntoIterator for constraints with an Item
that is AsRef<Constraint>. This allows pretty much any collection of
constraints to be passed to the layout functions including arrays,
vectors, slices, and iterators (without having to call collect() on
them).
2023-12-04 10:46:21 -08:00
Josh McKinney
34d099c99a fix(tabs): fixup tests broken by semantic merge conflict (#665)
Two changes without any line overlap caused the tabs tests to break
2023-12-04 10:45:31 -08:00
Josh McKinney
987f7eed4c docs(website): rename book to website (#661) 2023-12-04 11:49:54 +01:00
Josh McKinney
e4579f0db2 fix(tabs)!: set the default highlight_style (#635)
Previously the default highlight_style was set to `Style::default()`,
which meant that the highlight style was the same as the normal style.
This change sets the default highlight_style to reversed text.

BREAKING CHANGE: The `Tab` widget now renders the highlight style as
reversed text by default. This can be changed by setting the
`highlight_style` field of the `Tab` widget.
2023-12-04 01:39:46 -08:00
Josh McKinney
6a6e9dde9d style(tabs): fix doc formatting (#662) 2023-12-04 01:38:57 -08:00
Rhaskia
28ac55bc62 fix(tabs): Tab widget now supports custom padding (#629)
The Tab widget now contains padding_left and and padding_right
properties. Those values can be set with functions `padding_left()`,
`padding_right()`, and `padding()` whic all accept `Into<Line>`.

Fixes issue https://github.com/ratatui-org/ratatui/issues/502
2023-12-03 16:38:43 -08:00
Orhun Parmaksız
458fa90362 docs(lib): tweak the crate documentation (#659) 2023-12-03 15:59:53 -08:00
Jan Ferdinand Sauer
56fc410105 fix(block): make inner aware of title positions (#657)
Previously, when computing the inner rendering area of a block, all
titles were assumed to be positioned at the top, which caused the
height of the inner area to be miscalculated.
2023-12-03 13:57:59 +01:00
Josh McKinney
753e246531 feat(layout): allow configuring layout fill (#633)
The layout split will generally fill the remaining area when `split()`
is called. This change allows the caller to configure how any extra
space is allocated to the `Rect`s. This is useful for cases where the
caller wants to have a fixed size for one of the `Rect`s, and have the
other `Rect`s fill the remaining space.

For now, the method and enum are marked as unstable because the exact
name is still being bikeshedded. To enable this functionality, add the
`unstable-segment-size` feature flag in your `Cargo.toml`.

To configure the layout to fill the remaining space evenly, use
`Layout::segment_size(SegmentSize::EvenDistribution)`. The default
behavior is `SegmentSize::LastTakesRemainder`, which gives the last
segment the remaining space. `SegmentSize::None` will disable this
behavior. See the docs for `Layout::segment_size()` and
`layout::SegmentSize` for more information.

Fixes https://github.com/ratatui-org/ratatui/issues/536
2023-12-02 12:21:13 -08:00
Josh McKinney
211160ca16 docs: remove simple-tui-rs (#651)
This has not been recently and doesn't lead to good code
2023-12-02 16:17:50 +01:00
Valentin271
1229b96e42 feat(Rect): add offset method (#533)
The offset method creates a new Rect that is moved by the amount
specified in the x and y direction. These values can be positive or
negative. This is useful for manual layout tasks.

```rust
let rect = area.offset(Offset { x: 10, y -10 });
```
2023-11-27 08:03:18 -08:00
Valentin271
fe632d70cb docs(Sparkline): add documentation (#648) 2023-11-26 15:46:20 -08:00
Orhun Parmaksız
c862aa5e9e feat(list): support line alignment (#599)
The `List` widget now respects the alignment of `Line`s and renders them as expected.
2023-11-23 11:52:12 -08:00
Josh McKinney
18e19f6ce6 chore: fix breaking changes doc versions (#639)
Moves the layout::new change to unreleasedd section and adds the table change
2023-11-22 23:59:06 +01:00
Linda_pp
7ef0afcb62 refactor(widgets): remove unnecessary dynamic dispatch and heap allocation (#597)
Signed-off-by: rhysd <lin90162@yahoo.co.jp>
2023-11-21 22:24:54 -08:00
Josh McKinney
1e2f0be75a feat(layout)!: add parameters to Layout::new() (#557)
Adds a convenience function to create a layout with a direction and a
list of constraints which are the most common parameters that would be
generally configured using the builder pattern. The constraints can be
passed in as any iterator of constraints.

```rust
let layout = Layout::new(Direction::Horizontal, [
    Constraint::Percentage(50),
    Constraint::Percentage(50),
]);
```

BREAKING CHANGE:
Layout::new() now takes a direction and a list of constraints instead of
no arguments. This is a breaking change because it changes the signature
of the function. Layout::new() is also no longer const because it takes
an iterator of constraints.
2023-11-21 14:34:08 -08:00
Leon Sautour
a58cce2dba chore: disable default benchmarking (#598)
Disables the default benchmarking behaviour for the lib target to fix unrecognized
criterion benchmark arguments.

See https://bheisler.github.io/criterion.rs/book/faq.html#cargo-bench-gives-unrecognized-option-errors-for-valid-command-line-options for details
2023-11-21 14:23:21 -08:00
Jonathan Chan Kwan Yin
ffa78aa67c fix: add #[must_use] to Style-moving methods (#600) 2023-11-21 14:21:28 -08:00
dependabot[bot]
7cbb1060ac chore(deps): update itertools requirement from 0.11 to 0.12 (#636)
Updates the requirements on [itertools](https://github.com/rust-itertools/itertools) to permit the latest version.
- [Changelog](https://github.com/rust-itertools/itertools/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-itertools/itertools/compare/v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: itertools
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-11-20 14:47:59 -08:00
dependabot[bot]
a05541358e chore(deps): bump actions/github-script from 6 to 7 (#637)
Bumps [actions/github-script](https://github.com/actions/github-script) from 6 to 7.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](https://github.com/actions/github-script/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-11-20 14:43:06 -08:00
Josh McKinney
1f88da7538 fix(table): fix new clippy lint which triggers on table widths tests (#630)
* fix(table): new clippy lint in 1.74.0 triggers on table widths tests

https://rust-lang.github.io/rust-clippy/master/index.html\#/needless_borrows_for_generic_args

* fix(clippy): fix beta lint for .get(0) -> .first()

https://rust-lang.github.io/rust-clippy/master/index.html\#/get_first
2023-11-16 18:52:32 +01:00
Josh McKinney
36d8c53645 fix(table): widths() now accepts AsRef<[Constraint]> (#628)
This allows passing an array, slice or Vec of constraints, which is more
ergonomic than requiring this to always be a slice.

The following calls now all succeed:

```rust
Table::new(rows).widths([Constraint::Length(5), Constraint::Length(5)]);
Table::new(rows).widths(&[Constraint::Length(5), Constraint::Length(5)]);

// widths could also be computed at runtime
let widths = vec![Constraint::Length(5), Constraint::Length(5)];
Table::new(rows).widths(widths.clone());
Table::new(rows).widths(&widths);
```
2023-11-15 12:34:02 -08:00
Linda_pp
ec7b3872b4 fix(doc): do not access deprecated Cell::symbol field in doc example (#626) 2023-11-13 06:29:01 -08:00
Linda_pp
edacaf7ff4 feat(buffer): deprecate Cell::symbol field (#624)
The Cell::symbol field is now accessible via a getter method (`symbol()`). This will
allow us to make future changes to the Cell internals such as replacing `String` with
`compact_str`.
2023-11-11 21:43:51 -08:00
Danny Burrows
df0eb1f8e9 fix(terminal): insert_before() now accepts lines > terminal height and doesn't add an extra blank line (#596)
Fixes issue with inserting content with height>viewport_area.height and adds
the ability to insert content of height>terminal_height

- Adds TestBackend::append_lines() and TestBackend::clear_region() methods to
  support testing the changes
2023-11-08 10:04:35 -08:00
Josh McKinney
59b9c32fbc ci(codecov): adjust threshold and noise settings (#615)
Fixes https://github.com/ratatui-org/ratatui/issues/612
2023-11-05 10:21:11 +01:00
isinstance
9f37100096 Update README.md and fix the bug that demo2 cannot run (#595)
Fixes https://github.com/ratatui-org/ratatui/issues/594
2023-10-25 14:01:04 -07:00
a-kenji
a2f2bd5df5 fix: MSRV is now 1.70.0 (#593) 2023-10-25 02:44:36 -07:00
Orhun Parmaksız
c597b87f72 chore(release): prepare for 0.24.0 (#588) 2023-10-23 04:06:53 -07:00
Orhun Parmaksız
82a0d01a42 chore(changelog): skip dependency updates in changelog (#582) 2023-10-23 04:04:26 -07:00
Orhun Parmaksız
0e573cd6c7 docs(github): update code owners (#587) 2023-10-23 04:03:51 -07:00
Josh McKinney
b07000835f docs(readme): fix link to demo2 image (#589) 2023-10-23 12:28:59 +02:00
Orhun Parmaksız
c6c3f88a79 feat(backend): implement common traits for WindowSize (#586) 2023-10-23 10:40:09 +02:00
dependabot[bot]
a20bd6adb5 chore(deps): update lru requirement from 0.11.1 to 0.12.0 (#581)
Updates the requirements on [lru](https://github.com/jeromefroe/lru-rs) to permit the latest version.
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jeromefroe/lru-rs/compare/0.11.1...0.12.0)

---
updated-dependencies:
- dependency-name: lru
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-10-21 09:25:05 -04:00
dependabot[bot]
5213f78d25 chore(deps): bump actions/checkout from 3 to 4 (#580)
Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-10-21 12:19:52 +02:00
Josh McKinney
12f92911c7 chore(github): create dependabot.yml (#575)
* chore: Create dependabot.yml

* Update .github/dependabot.yml

Co-authored-by: Orhun Parmaksız <orhun@archlinux.org>

* Update .github/dependabot.yml

---------

Co-authored-by: Orhun Parmaksız <orhun@archlinux.org>
2023-10-21 12:17:47 +02:00
Josh McKinney
ad2dc5646d docs(examples): update examples readme (#576)
remove VHS bug info, tweak colors_rgb image, update some of the instructions. add demo2
2023-10-20 21:41:36 +02:00
Linda_pp
6cbdb06fd8 chore(examples): refactor some examples (#578)
* chore(examples): Simplify timeout calculation with `Duration::saturating_sub`

Signed-off-by: rhysd <lin90162@yahoo.co.jp>

* fix(examples): Do not ignore errors from `poll_input` call

Signed-off-by: rhysd <lin90162@yahoo.co.jp>

---------

Signed-off-by: rhysd <lin90162@yahoo.co.jp>
2023-10-20 21:31:52 +02:00
blu
27c5637675 docs(README): fix links to CONTRIBUTING.md and BREAKING-CHANGES.md (#577) 2023-10-20 20:29:04 +02:00
Josh McKinney
0c52ff431a fix(gauge): fix gauge widget colors (#572)
The background colors of the gauge had a workaround for the issue we had
with VHS / TTYD rendering the background color of the gauge. This
workaround is no longer necessary in the updated versions of VHS / TTYD.

Fixes https://github.com/ratatui-org/ratatui/issues/501
2023-10-19 04:29:53 -07:00
Josh McKinney
8d507c43fa fix(backend): add feature flag for underline-color (#570)
Windows 7 doesn't support the underline color attribute, so we need to
make it optional. This commit adds a feature flag for the underline
color attribute - it is enabled by default, but can be disabled by
passing `--no-default-features` to cargo.

We could specically check for Windows 7 and disable the feature flag
automatically, but I think it's better for this check to be done by the
crossterm crate, since it's the one that actually knows about the
underlying terminal.

To disable the feature flag in an application that supports Windows 7,
add the following to your Cargo.toml:

```toml
ratatui = { version = "0.24.0", default-features = false, features = ["crossterm"] }
```

Fixes https://github.com/ratatui-org/ratatui/issues/555
2023-10-18 13:52:43 -07:00
Josh McKinney
b61f65bc20 docs(examples): udpate theme to Aardvark Blue (#574)
This is a nicer theme that makes the colors pop
2023-10-18 13:35:51 +02:00
Orhun Parmaksız
3a57e76ed1 chore(github): add contact links for issues (#567) 2023-10-11 17:42:48 -07:00
tz629
6c7bef8d11 docs: replace colons with dashes in README.md for consistency (#566) 2023-10-07 23:37:09 -07:00
Dheepak Krishnamurthy
88ae3485c2 docs: Update Frame docstring to remove reference to generic backend (#564) 2023-10-06 17:31:36 -04:00
Dheepak Krishnamurthy
e5caf170c8 docs(custom_widget): make button sticky when clicking with mouse (#561) 2023-10-06 11:17:14 +02:00
Dheepak Krishnamurthy
089f8ba66a docs: Add double quotes to instructions for features (#560) 2023-10-05 04:06:28 -04:00
Josh McKinney
fbf1a451c8 chore: simplify constraints (#556)
Use bare arrays rather than array refs / Vecs for all constraint
examples.

Ref: https://github.com/ratatui-org/ratatui-book/issues/94
2023-10-03 16:50:14 -07:00
Josh McKinney
4541336514 feat(canvas): implement half block marker (#550)
* feat(canvas): implement half block marker

A useful technique for the terminal is to use half blocks to draw a grid
of "pixels" on the screen. Because we can set two colors per cell, and
because terminal cells are about twice as tall as they are wide, we can
draw a grid of half blocks that looks like a grid of square pixels.

This commit adds a new `HalfBlock` marker that can be used in the Canvas
widget and the associated HalfBlockGrid.

Also updated demo2 to use the new marker as it looks much nicer.

Adds docs for many of the methods and structs on canvas.

Changes the grid resolution method to return the pixel count
rather than the index of the last pixel.
This is an internal detail with no user impact.
2023-09-30 06:03:03 -07:00
Josh McKinney
346e7b4f4d docs: add summary to breaking changes (#549) 2023-09-30 05:54:38 -07:00
Dheepak Krishnamurthy
15641c8475 feat: Add buffer_mut method on Frame (#548) 2023-09-30 05:53:37 -07:00
Hichem
2fd85af33c refactor(barchart): simplify internal implementation (#544)
Replace `remove_invisible_groups_and_bars` with `group_ticks`
`group_ticks` calculates the visible bar length in ticks. (A cell contains 8 ticks).

It is used for 2 purposes:
1. to get the bar length in ticks for rendering
2. since it delivers only the values of the visible bars, If we zip these values
   with the groups and bars, then we will filter out the invisible groups and bars

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-09-29 15:04:20 -07:00
Dheepak Krishnamurthy
401a7a7f71 docs: Improve clarity in documentation for Frame and Terminal 📚 (#545) 2023-09-28 20:18:54 -07:00
Dheepak Krishnamurthy
e35e4135c9 docs: Fix terminal comment (#547) 2023-09-28 18:44:52 -07:00
Dheepak Krishnamurthy
8ae4403b63 docs: Fix Terminal docstring (#546) 2023-09-28 18:42:31 -07:00
Josh McKinney
11076d0af3 fix(rect): fix arithmetic overflow edge cases (#543)
Fixes https://github.com/ratatui-org/ratatui/issues/258
2023-09-28 03:19:33 -07:00
Josh McKinney
9cfb133a98 docs: document alpha release process (#542)
Fixes https://github.com/ratatui-org/ratatui/issues/412
2023-09-28 11:27:03 +02:00
Josh McKinney
4548a9b7e2 docs: add BREAKING-CHANGES.md (#538)
Document the breaking changes in each version. This document is
manually curated by summarizing the breaking changes in the changelog.
2023-09-28 01:00:43 -07:00
Josh McKinney
61af0d9906 docs(examples): make custom widget example into a button (#539)
The widget also now supports mouse
2023-09-27 20:07:45 -07:00
Josh McKinney
c0991cc576 docs: make library and README consistent (#526)
* docs: make library and README consistent

Generate the bulk of the README from the library documentation, so that
they are consistent using cargo-rdme.

- Removed the Contributors section, as it is redundant with the github
  contributors list.
- Removed the info about the other backends and replaced it with a
  pointer to the documentation.
- add docsrs example, vhs tape and images that will end up in the README

Fixes: https://github.com/ratatui-org/ratatui/issues/512
2023-09-27 19:57:04 -07:00
Hichem
301366c4fa feat(barchart): render charts smaller than 3 lines (#532)
The bar values are not shown if the value width is equal the bar width
and the bar is height is less than one line

Add an internal structure `LabelInfo` which stores the reserved height
for the labels (0, 1 or 2) and also whether the labels will be shown.

Fixes ratatui-org#513

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-09-26 13:54:04 -07:00
Valentin271
3bda372847 docs(tabs): add documentation to Tabs (#535) 2023-09-25 23:22:14 -07:00
Josh McKinney
082cbcbc50 feat(frame)!: Remove generic Backend parameter (#530)
This change simplifys UI code that uses the Frame type. E.g.:

```rust
fn draw<B: Backend>(frame: &mut Frame<B>) {
    // ...
}
```

Frame was generic over Backend because it stored a reference to the
terminal in the field. Instead it now directly stores the viewport area
and current buffer. These are provided at creation time and are valid
for the duration of the frame.

BREAKING CHANGE: Frame is no longer generic over Backend. Code that
accepted `Frame<Backend>` will now need to accept `Frame`. To migrate
existing code, remove any generic parameters from code that uses an
instance of a Frame. E.g. the above code becomes:

```rust
fn draw(frame: &mut Frame) {
    // ...
}
```
2023-09-25 22:30:36 -07:00
Josh McKinney
cbf86da0e7 feat(rect): add is_empty() to simplify some common checks (#534)
- add `Rect::is_empty()` that checks whether either height or width == 0
- refactored `Rect` into layout/rect.rs from layout.rs. No public API change as
   the module is private and the type is re-exported under the `layout` module.
2023-09-25 21:45:29 -07:00
Josh McKinney
32e461953c feat(block)!: allow custom symbols for borders (#529)
Adds a new `Block::border_set` method that allows the user to specify
the symbols used for the border.

Added two new border types: `BorderType::QuadrantOutside` and
`BorderType::QuadrantInside`. These are used to draw borders using the
unicode quadrant characters (which look like half block "pixels").

QuadrantOutside:
```
▛▀▀▜
▌  ▐
▙▄▄▟
```

QuadrantInside:
```
▗▄▄▖
▐  ▌
▝▀▀▘
```
Fixes: https://github.com/ratatui-org/ratatui/issues/528

BREAKING CHANGES:
- BorderType::to_line_set is renamed to to_border_set
- BorderType::line_symbols is renamed to border_symbols
2023-09-23 22:08:32 -07:00
Orhun Parmaksız
d67fa2c00d feat(line): add Line::raw constructor (#511)
* feat(line): add `Line::raw` constructor

There is already `Span::raw` and `Text::raw` methods
and this commit simply adds `Line::raw` method for symmetry.

Multi-line content is converted to multiple spans with the new line removed
2023-09-22 04:34:58 -07:00
Valentin271
c3155a2489 fix(barchart): add horizontal labels(#518)
Labels were missed in the initial implementation of the horizontal
mode for the BarChart widget. This adds them.

Fixes https://github.com/ratatui-org/ratatui/issues/499
2023-09-22 00:38:58 -07:00
Josh McKinney
c5ea656385 fix(barchart): avoid divide by zero in rendering (#525)
Fixes: https://github.com/ratatui-org/ratatui/issues/521
2023-09-21 16:35:28 -07:00
Josh McKinney
be55a5fbcd feat(examples): add demo2 example (#500) 2023-09-21 01:47:23 -07:00
BlakStar
21303f2167 fix(rect): prevent overflow in inner() and area() (#523) 2023-09-20 15:56:32 -07:00
Hichem
c9b8e7cf41 fix(barchart): render value labels with unicode correctly (#515)
An earlier change introduced a bug where the width of value labels with
unicode characters was incorrectly using the string length in bytes
instead of the unicode character count. This reverts the earlier change.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-09-19 18:06:32 -07:00
Josh McKinney
5498a889ae chore(spans): remove deprecated Spans type (#426)
The `Spans` type (plural, not singular) was replaced with a more ergonomic `Line` type
in Ratatui v0.21.0 and marked deprecated byt left for backwards compatibility. This is now
removed.

- `Line` replaces `Spans`
- `Buffer::set_line` replaces `Buffer::set_spans`
2023-09-19 02:58:52 -07:00
Valentin271
0fe738500c docs(Gauge): add docs for Gauge and LineGauge (#514) 2023-09-18 15:21:59 -07:00
Aizon
dd9a8df03a docs(table): add documentation for block and header methods of the Table widget (#505) 2023-09-17 14:19:21 -07:00
Josh McKinney
0c7d547db1 fix(docs): don't fail rustdoc due to termion (#503)
Windows cannot compile termion, so it is not included in the docs.
Rustdoc will fail if it cannot find a link, so the docs fail to build
on windows.

This replaces the link to TermionBackend with one that does not fail
during checks.

Fixes https://github.com/ratatui-org/ratatui/issues/498
2023-09-15 09:47:10 -07:00
Mariano Marciello
638d596a3b fix(Layout): use LruCache for layout cache (#487)
The layout cache now uses a LruCache with default size set to 16 entries.
Previously the cache was backed by a HashMap, and was able to grow
without bounds as a new entry was added for every new combination of
layout parameters.

- Added a new method (`layout::init_cache(usize)`) that allows the cache
size to be changed if necessary. This will only have an effect if it is called
prior to any calls to `layout::split()` as the cache is wrapped in a `OnceLock`
2023-09-14 15:20:38 -07:00
Josh McKinney
d4976d4b63 docs(widgets): update the list of available widgets (#496) 2023-09-13 10:48:00 +02:00
Josh McKinney
a7bf4b3f36 chore: use modern modules syntax (#492)
Move xxx/mod.rs to xxx.rs
2023-09-12 12:38:51 -07:00
Josh McKinney
94af2a29e1 test(buffer): allow with_lines to accept Vec<Into<Line>> (#494)
This allows writing unit tests without having to call set_style on the
expected buffer.

E.g.:
```rust
use crate::style::Stylize;
let mut buf = Buffer::empty(Rect::new(0, 0, 10, 10));
buf.set_string(0, 0, "foo", Style::new().red());
buf.set_string(0, 1, "bar", Style::new().blue());
assert_eq!(buf, Buffer::with_lines(vec!["foo".red(), "bar".blue()]));
```

Inspired by https://github.com/ratatui-org/ratatui/issues/493#issuecomment-1714844468
2023-09-12 11:53:43 -07:00
Josh McKinney
42f816999e docs(terminal): add docs for terminal module (#486)
- moves the impl Terminal block up to be closer to the type definition
2023-09-11 18:39:15 -07:00
Josh McKinney
1414fbcc05 docs: import prelude::* in doc examples (#490)
This commit adds `prelude::*` all doc examples and widget::* to those
that need it. This is done to highlight the use of the prelude and
simplify the examples.

- Examples in Type and module level comments show all imports and use
  `prelude::*` and `widget::*` where possible.
- Function level comments hide imports unless there are imports other
  than `prelude::*` and `widget::*`.
2023-09-11 18:01:57 -07:00
Josh McKinney
1947c58c60 docs(backend): improve backend module docs (#489) 2023-09-11 17:36:44 -07:00
Josh McKinney
1e20475061 docs(stylize): improve docs for style shorthands (#491)
The Stylize trait was introduced in 0.22 to make styling less verbose.
This adds a bunch of documentation comments to the style module and
types to make this easier to discover.
2023-09-11 16:46:03 -07:00
Dheepak Krishnamurthy
af36282df5 chore: only run check pr action on pull_request_target events (#485) 2023-09-10 05:19:03 -04:00
Dheepak Krishnamurthy
322e46f15d chore: Prevent PR merge with do not merge labels ♻️ (#484) 2023-09-10 04:14:51 -04:00
Dheepak Krishnamurthy
983ea7f7a5 chore: Fix check for if breaking change label should be added ♻️ (#483) 2023-09-10 03:29:06 -04:00
Dheepak Krishnamurthy
384e616231 chore: Add a check for if breaking change label should be added ♻️ (#481) 2023-09-09 21:06:31 -04:00
Josh McKinney
6b8725f091 docs(examples): add colors_rgb example (#476) 2023-09-09 17:30:41 -07:00
Josh McKinney
17797d83da docs(canvas): add support note for Braille marker (#472) 2023-09-09 17:08:28 -07:00
Josh McKinney
ebd3680a47 fix(stylize)!: add Stylize impl for String (#466)
Although the `Stylize` trait is already implemented for `&str` which
extends to `String`, it is not implemented for `String` itself. This
commit adds an impl of Stylize that returns a Span<'static> for `String`
so that code can call Stylize methods on temporary `String`s.

E.g. the following now compiles instead of failing with a compile error
about referencing a temporary value:

    let s = format!("hello {name}!", "world").red();

BREAKING CHANGE: This may break some code that expects to call Stylize
methods on `String` values and then use the String value later. This
will now fail to compile because the String is consumed by set_style
instead of a slice being created and consumed.

This can be fixed by cloning the `String`. E.g.:

    let s = String::from("hello world");
    let line = Line::from(vec![s.red(), s.green()]); // fails to compile
    let line = Line::from(vec![s.clone().red(), s.green()]); // works
2023-09-09 17:05:36 -07:00
Josh McKinney
74c5244be1 docs: add logo and favicon to docs.rs page (#473) 2023-09-09 17:04:16 -07:00
Josh McKinney
3cf0b83bda docs(color): document true color support (#477)
* refactor(style): move Color to separate color mod

* docs(color): document true color support
2023-09-09 07:41:00 -07:00
Orhun Parmaksız
127813120e chore(changelog): make the scopes lowercase in the changelog (#479) 2023-09-09 07:29:41 -07:00
Valentin271
0c68ebed4f docs(Block): add documentation to Block (#469) 2023-09-06 15:09:41 -07:00
Aizon
232be80325 docs(table): add documentation for Table::new() (#471) 2023-09-05 16:41:47 -07:00
Josh McKinney
c95a75c5d5 ci(makefile): remove termion dependency from doc lint (#470)
Only build termion on non-windows targets
2023-09-05 16:39:34 -07:00
Aatu Kajasto
c8ab2d5908 fix(chart): use graph style for top line (#462)
A bug in the rendering caused the top line of the chart to be rendered
using the style of the chart, instead of the dataset style. This is
fixed by only setting the style for the width of the text, and not the
entire row.

Fixes: https://github.com/ratatui-org/ratatui/issues/379
2023-09-05 05:51:05 -07:00
Josh McKinney
572df758ba ci: put commit id first in changelog (#463) 2023-09-05 02:13:02 -07:00
Josh McKinney
b996102837 ci(makefile): add format target (#468)
- add format target to Makefile.toml that actually fixes the formatting
- rename fmt target to lint-format
- rename style-check target to lint-style
- rename typos target to lint-typos
- rename check-docs target to lint-docs
- add section to CONTRIBUTING.md about formatting
2023-09-05 00:48:36 -07:00
onotaizee@gmail.com
080a05bbd3 docs(paragraph): add docs for alignment fn (#467) 2023-09-04 22:42:32 -07:00
Josh McKinney
343c6cdc47 ci(lint): move formatting and doc checks first (#465)
Putting the formatting and doc checks first to ensure that more critical
errors are caught first (e.g. a conventional commit error or typo should
not prevent the formatting and doc checks from running).
2023-09-03 01:30:00 +02:00
Josh McKinney
5c785b2270 docs(examples): move example gifs to github (#460)
- A new orphan branch named "images" is created to store the example
  images
2023-09-02 14:15:07 -07:00
Josh McKinney
ca9bcd3156 docs(examples): add descriptions and update theme (#460)
- Use the OceanicMaterial consistently in examples
2023-09-02 14:15:03 -07:00
Orhun Parmaksız
82b40be4ab chore(ci): improve checking the PR title (#464)
- Use [`action-semantic-pull-request`](https://github.com/amannn/action-semantic-pull-request)
- Allow only reading the PR contents
- Enable merge group
2023-09-02 14:11:21 -07:00
Valentin271
e098731d6c docs(barchart): add documentation to BarChart (#449)
Add documentation to the `BarChart` widgets and its sub-modules.
2023-09-01 19:59:35 -07:00
Valentin271
5f6aa30be5 chore: check documentation lint (#454) 2023-09-01 19:59:07 -07:00
Valentin271
ea70bffe5d test(barchart): add benchmarks (#455) 2023-09-01 19:57:48 -07:00
Dheepak Krishnamurthy
47ae602df4 chore: Check that PR title matches conventional commit guidelines ♻️ (#459)
Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
2023-09-01 19:56:40 -07:00
Josh McKinney
878b6fc258 ci: ignore benches from code coverage (#461) 2023-09-02 02:45:46 +00:00
Dheepak Krishnamurthy
0696f484e8 Better ergonomics for ScrollbarState and improved documentation (#456)
* feat(scrollbar): Better ergonomics for ScrollbarState and improved documentation 

* feat(scrollbar)!: Use usize instead of u16 for scrollbar  💥
2023-09-01 06:47:14 +00:00
Valentin271
927a5d8251 docs: fix documentation lint warnings (#450) 2023-08-30 10:01:42 +00:00
a-kenji
28e7fd4bc5 docs(terminal): fix doc comment (#452) 2023-08-30 10:01:28 +00:00
Valentin271
28c61571e8 chore: add documentation guidelines (#447) 2023-08-29 20:57:46 +00:00
Benjamin Grosse
d0779034e7 feat(backend): backend provides window_size, add Size struct (#276)
For image (sixel, iTerm2, Kitty...) support that handles graphics in
terms of `Rect` so that the image area can be included in layouts.

For example: an image is loaded with a known pixel-size, and drawn, but
the image protocol has no mechanism of knowing the actual cell/character
area that been drawn on. It is then impossible to skip overdrawing the
area.

Returning the window size in pixel-width / pixel-height, together with
colums / rows, it can be possible to account the pixel size of each cell
/ character, and then known the `Rect` of a given image, and also resize
the image so that it fits exactly in a `Rect`.

Crossterm and termwiz also both return both sizes from one syscall,
while termion does two.

Add a `Size` struct for the cases where a `Rect`'s `x`/`y` is unused
(always zero).

`Size` is not "clipped" for `area < u16::max_value()` like `Rect`. This
is why there are `From` implementations between the two.
2023-08-29 04:46:02 +00:00
Valentin271
51fdcbe7e9 docs(title): add documentation to title (#443)
This adds documentation for Title and Position
2023-08-29 02:18:02 +00:00
Dheepak Krishnamurthy
eda2fb7077 docs: Use ratatui 📚 (#446) 2023-08-29 01:40:43 +00:00
Orhun Parmaksız
3f781cad0a chore(release): prepare for 0.23.0 (#444) 2023-08-28 11:46:03 +00:00
Hichem
fc727df7d2 refactor(barchart): reduce some calculations (#430)
Calculating the label_offset is unnecessary, if we just render the
group label after rendering the bars. We can just reuse bar_y.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-08-27 21:10:49 +00:00
Orhun Parmaksız
47fe4ad69f docs(project): make the project description cooler (#441)
* docs(project): make the project description cooler

* docs(lib): simplify description
2023-08-27 20:58:54 +00:00
Orhun Parmaksız
7a70602ec6 docs(examples): fix the instructions for generating demo GIF (#442) 2023-08-27 20:50:33 +00:00
Josh McKinney
14eb6b6979 test(tabs): add unit tests (#439) 2023-08-27 09:38:16 +00:00
Orhun Parmaksız
6009844e25 chore(changelog): ignore alpha tags (#440) 2023-08-27 09:01:17 +00:00
Orhun Parmaksız
8b36683571 docs(lib): extract feature documentation from Cargo.toml (#438)
* docs(lib): extract feature documentation from Cargo.toml

* chore(deps): make `document-features` optional dependency

* docs(lib): document the serde feature from features section
2023-08-27 09:00:35 +00:00
Josh McKinney
e9bd736b1a test(clear): test Clear rendering (#432) 2023-08-26 21:32:23 +00:00
Josh McKinney
a890f2ac00 test(block): test all block methods (#431) 2023-08-26 21:32:01 +00:00
Josh McKinney
b35f19ec44 test(test_backend): add tests for TestBackend coverage (#434)
These are mostly to catch any future bugs introduced in the test backend
2023-08-26 07:25:16 +00:00
Josh McKinney
ad3413eeec test(canvas): add unit tests for line (#437)
Also add constructor to simplify creating lines
2023-08-26 04:38:51 +00:00
Josh McKinney
f0716edbcf test(map): add unit tests (#436) 2023-08-26 01:09:55 +00:00
Josh McKinney
fc9f637fb0 test(text): add unit tests (#435) 2023-08-26 01:08:12 +00:00
Josh McKinney
292a11d81e test(styled_grapheme): test StyledGrapheme methods (#433) 2023-08-26 01:02:30 +00:00
Josh McKinney
ad4d6e7dec test(canvas): add tests for rectangle (#429) 2023-08-25 11:50:10 +00:00
Benjamin Grosse
e4bcf78afa feat(cell): add voluntary skipping capability for sixel (#215)
> Sixel is a bitmap graphics format supported by terminals.
> "Sixel mode" is entered by sending the sequence ESC+Pq.
> The "String Terminator" sequence ESC+\ exits the mode.

The graphics are then rendered with the top left positioned at the
cursor position.

It is actually possible to render sixels in ratatui with just
`buf.get_mut(x, y).set_symbol("^[Pq ... ^[\")`. But any buffer covering
the "image area" will overwrite the graphics. This is most likely the same
buffer, even though it consists of empty characters `' '`, except for
the top-left character that starts the sequence.

Thus, either the buffer or cells must be specialized to avoid drawing
over the graphics. This patch specializes the `Cell` with a
`set_skip(bool)` method, based on James' patch:
https://github.com/TurtleTheSeaHobo/tui-rs/tree/sixel-support
I unsuccessfully tried specializing the `Buffer`, but as far as I can tell
buffers get merged all the way "up" and thus skipping must be set on the
Cells. Otherwise some kind of "skipping area" state would be required,
which I think is too complicated.

Having access to the buffer now it is possible to skipp all cells but the
first one which can then `set_symbol(sixel)`. It is up to the user to
deal with the graphics size and buffer area size. It is possible to get
the terminal's font size in pixels with a syscall.

An image widget for ratatui that uses this `skip` flag is available at
https://github.com/benjajaja/ratatu-image.

Co-authored-by: James <james@rectangle.pizza>
2023-08-25 09:20:36 +00:00
Josh McKinney
d0ee04a69f docs(span): update docs and tests for Span (#427) 2023-08-25 09:08:05 +00:00
Josh McKinney
6d6eceeb88 docs(paragraph): add more docs (#428) 2023-08-25 04:43:19 +00:00
Hichem
0dca6a689a feat(barchart): Add direction attribute. (horizontal bars support) (#325)
* feat(barchart): Add direction attribute

Enable rendring the bars horizontally. In some cases this allow us to
make more efficient use of the available space.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>

* feat(barchart)!: render the group labels depending on the alignment

This is a breaking change, since the alignment by default is set to
Left and the group labels are always rendered in the center.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>

---------

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-08-24 22:26:15 +00:00
Josh McKinney
a937500ae4 chore(changelog): show full commit message (#423)
This allows someone reading the changelog to search for information
about breaking changes or implementation of new functionality.

- refactored the commit template part to a macro instead of repeating it
- added a link to the commit and to the release
- updated the current changelog for the alpha and unreleased changes
- Automatically changed the existing * lists to - lists
2023-08-24 07:59:59 +00:00
Geert Stappers
80fd77e476 Matrix URL (#342)
* docs(readme): add links to matrix bridge

* Update README.md

Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>

---------

Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>
2023-08-23 16:44:39 +00:00
Josh McKinney
98155dce25 chore(traits): add Display and FromStr traits (#425)
Use strum for most of these, with a couple of manual implementations,
and related tests
2023-08-23 04:21:13 +00:00
hasezoey
1ba2246d95 Document all features in one place (#391)
* chore(Cargo.toml): change "time" to "dep:time"

* docs(lib): document optional and default features
2023-08-23 03:54:42 +00:00
a-kenji
57ea871753 feat: expand serde attributes for TestBuffer (#389) 2023-08-22 12:51:06 +00:00
Dheepak Krishnamurthy
61533712be feat: Add weak constraints to make rects closer to each other in size (#395)
Also make `Max` and `Min` constraints MEDIUM strength for higher priority over equal chunks
2023-08-20 17:40:04 +00:00
Josh McKinney
dc552116cf fix(table): fix unit tests broken due to rounding (#419)
The merge of the table unit tests after the rounding layout fix was not
rebased correctly, this addresses the broken tests, makes them more
concise while adding comments to help clarify that the rounding behavior
is working as expected.
2023-08-20 00:15:20 +00:00
hasezoey
ab5e616635 style(paragraph): add documentation for "scroll"'s "offset" (#355)
* style(paragraph): add documentation for "scroll"'s "offset"

* style(paragraph): add more text to the scroll doc-comment
2023-08-19 21:17:46 +00:00
Orhun Parmaksız
b6b2da5eb7 fix(release): fix the last tag retrieval for alpha releases (#416) 2023-08-19 13:14:17 +00:00
Orhun Parmaksız
89ef0e29f5 chore(ci): update the name of the CI workflow (#417) 2023-08-19 13:14:01 +00:00
hasezoey
4cd843eda9 test(table): add test for consistent table-column-width (#404) 2023-08-19 12:47:23 +00:00
Dheepak Krishnamurthy
d2429bc3e4 chore: Create rust-toolchain.toml (#415) 2023-08-19 03:51:53 +00:00
Dheepak Krishnamurthy
b090101b23 feat: Simplify split function (#411) 2023-08-18 14:43:03 +00:00
Josh McKinney
56455e0fee fix(layout): don't leave gaps between chunks (#408)
Previously the layout used the floor of the calculated start and width
as the value to use for the split Rects. This resulted in gaps between
the split rects.

This change modifies the layout to round to the nearest column instead
of taking the floor of the start and width. This results in the start
and end of each rect being rounded the same way and being strictly
adjacent without gaps.

Because there is a required constraint that ensures that the last end is
equal to the area end, there is no longer the need to fixup the last
item width when the fill (as e.g. width = x.99 now rounds to x+1 not x).

The colors example has been updated to use Ratio(1, 8) instead of
Percentage(13), as this now renders without gaps for all possible sizes,
whereas previously it would have left odd gaps between columns.
2023-08-18 10:23:13 +00:00
Josh McKinney
f4ed3b7584 fix(layout): ensure left <= right (#410)
The recent refactor missed the positive width constraint
2023-08-17 20:15:25 +00:00
hasezoey
c86924b925 Span tests (#406)
* test(span): add some tests for "Span"

* feat(span): replace all "From<*>" with one "From<Into<Cow>>>"
2023-08-17 08:32:26 +00:00
Josh McKinney
de25de0a95 refactor(layout): simplify and doc split() (#405)
* test(layout): add tests for split()

* refactor(layout): simplify and doc split()

This is mainly a reduction in density of the code with a goal of
improving mainatainability so that the algorithm is clear.
2023-08-17 07:44:33 +00:00
hasezoey
ea48af1c9a chore(codecov): fix yaml syntax (#407)
a yaml file cannot contain tabs outside of strings
2023-08-16 10:21:21 +00:00
Josh McKinney
418ed20479 docs(layout): add doc comments (#403) 2023-08-16 00:10:28 +00:00
hasezoey
519509945b refactor(layout): simplify split() function (#396)
Removes some unnecessary code and makes the function more readable.
Instead of creating a temporary result and mutating it, we just create
the result directly from the list of changes.
2023-08-14 23:17:21 +00:00
Josh McKinney
8c55158822 chore: use vhs to create demo.gif (#390)
The bug that prevented braille rendering is fixed, so switch to VHS for
rendering the demo gif

![Demo of Ratatui](https://vhs.charm.sh/vhs-tF0QbuPbtHgUeG0sTVgFr.gif)
2023-08-13 16:21:00 +00:00
Jan Keith Darunday
7748720963 feat(table): add support for line alignment in the table widget (#392)
* feat(table): enforce line alignment in table render

* test(table): add table alignment render test
2023-08-13 08:32:27 +00:00
hasezoey
4d70169bef feat(list): add option to always allocate the "selection" column width (#394)
* feat(list): add option to always allocate the "selection" column width

Before this option was available, selecting a item in a list when nothing was selected
previously made the row layout change (the same applies to unselecting) by adding the width
of the "highlight symbol" in the front of the list, this option allows to configure this
behavior.

* style: change "highlight_spacing" doc comment to use inline code-block for reference
2023-08-13 08:24:51 +00:00
Josh McKinney
10dbd6f207 docs(examples): show layout constraints (#393)
Shows the way that layout constraints interact visually

![example](https://vhs.charm.sh/vhs-1ZNoNLNlLtkJXpgg9nCV5e.gif)
2023-08-13 07:38:43 +00:00
Orhun Parmaksız
778c320008 fix(release): set the correct permissions for creating alpha releases (#400) 2023-08-12 19:48:13 +00:00
Orhun Parmaksız
268bbed17e chore(make): add task descriptions to Makefile.toml (#398) 2023-08-12 19:48:00 +00:00
hasezoey
f63ac72305 feat(widgets::table): add option to always allocate the "selection" constraint (#375)
* feat(table): add option to configure selection layout changes

Before this option was available, selecting a row in the table when no row was selected
previously made the tables layout change (the same applies to unselecting) by adding the width
of the "highlight symbol" in the front of the first column, this option allows to configure this
behavior.

* refactor(table): refactor "get_columns_widths" to return (x, width)

and "render" to make use of that

* refactor(table): refactor "get_columns_widths" to take in a selection_width instead of a boolean

also refactor "render" to make use of this change

* fix(table): rename "highlight_set_selection_space" to "highlight_spacing"

* style(table): apply doc-comment suggestions from code review

Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>

---------

Co-authored-by: Dheepak Krishnamurthy <me@kdheepak.com>
2023-08-11 14:15:46 +00:00
Valentin271
3293c6b80b test(sparkline): added benchmark (#384)
Added benchmark for the `sparkline` widget testing a basic render with different amout of data
2023-08-11 02:17:32 +00:00
Valentin271
149d48919d perf(bench): Used iter_batched to clone widgets in setup function (#383)
Replaced `Bencher::iter` by `Bencher::iter_batched` to clone the widget in the setup function instead of in the benchmark timing.
2023-08-11 02:17:14 +00:00
tieway59
8c4a2e0fbf chore: implement Hash common traits (#381)
Reorder the derive fields to be more consistent:

    Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash

Hash trait won't be impl in this PR due to rust std design.
If we need hash trait for f64 related structs in the future,
we should consider wrap f64 into a new type.

see: https://github.com/ratatui-org/ratatui/issues/307
2023-08-11 02:16:48 +00:00
Valentin271
664fb4cffd test(list): Added benchmarks (#377)
Added benchmarks for the list widget (render and render half scrolled)
2023-08-11 02:11:41 +00:00
Josh McKinney
6ad4bd4cf2 docs(examples): Add color and modifiers examples (#345)
The intent of these examples is to show the available colors and
modifiers.

- added impl Display for Color

![colors](https://vhs.charm.sh/vhs-2ZCqYbTbXAaASncUeWkt1z.gif)
![modifiers](https://vhs.charm.sh/vhs-2ovGBz5l3tfRGdZ7FCw0am.gif)
2023-08-11 01:36:12 +00:00
a-kenji
37fa6abe9d build(deps): upgrade crossterm to 0.27 (#380) 2023-08-07 13:30:11 +00:00
a-kenji
8b28672131 chore(docs): add doc comment bump to release documentation (#382) 2023-08-07 13:30:03 +00:00
a-kenji
de9f52ff2c ci(coverage): exclude examples directory from coverage (#373) 2023-08-07 12:34:04 +00:00
hasezoey
c8ddc164c7 docs(layout::Constraint): add doc-comments for all variants (#371)
fixes #354
2023-08-05 22:40:25 +00:00
Valentin271
e18393dbc6 test(block): add benchmarks (#368)
Added benchmarks to the block widget to uncover eventual performance issues
2023-08-05 14:47:06 +00:00
Orhun Parmaksız
aad164a531 feat(release): add automated nightly releases (#359)
* feat(release): add automated nightly releases

* refactor(release): rename the alpha workflow

* refactor(release): simplify the release calculation
2023-08-05 14:41:07 +00:00
Valentin271
3a37d2f6ed docs(readme): use the correct version for MSRV (#369) 2023-08-05 10:20:30 +00:00
a-kenji
8cd3205d70 chore(toolchain)!: bump msrv to 1.67 (#361)
* chore(toolchain)!: bump msrv to 1.67

BREAKING_CHANGE: The msrv is now `1.67`

* docs(readme): update the MSRV notice

---------

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
2023-08-04 23:23:22 +00:00
Josh McKinney
e82521ea79 docs(examples): regen block.gif in readme (#365) 2023-08-04 10:12:13 +00:00
Josh McKinney
9191ad60fd ci: don't fail fast (#364)
Run all the tests rather than canceling when one test fails. This allows
us to see all the failures, rather than just the first one if there are
multiple. Specifically this is useful when we have an issue in one
toolchain or backend.
2023-08-04 09:56:05 +00:00
Valentin271
49a82e062f fix(block): Fixed title_style not rendered (#349) (#363)
Fixes #349
2023-08-04 09:47:55 +00:00
tieway59
181706c564 chore: implement Eq & PartialEq common traits (#357)
Reorder the derive fields to be more consistent:

    Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash

see: https://github.com/ratatui-org/ratatui/issues/307
2023-08-04 08:23:26 +00:00
Josh McKinney
554805d6cb docs(examples): Update block example (#351)
![Block example](https://vhs.charm.sh/vhs-5X6hpReuDBKjD6hLxmDQ6F.gif)
2023-08-04 07:46:37 +00:00
a-kenji
1727fa5120 feat(scrollbar)!: add optional track symbol (#360)
The track symbol is now optional, simplifying composition with other
widgets.

BREAKING_CHANGE: The `track_symbol` needs to be set in the following way
now:

```
let scrollbar = Scrollbar::default().track_symbol(Some("-"));
```
2023-08-03 15:42:54 +00:00
tieway59
440f62ff54 Chore: implement Clone & Copy common traits (#350)
Implement `Clone & Copy` common traits for most structs in src.

Only implement `Copy` for structs that are simple and trivial to copy.

Reorder the derive fields to be more consistent:

    Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash

see: https://github.com/ratatui-org/ratatui/issues/307
2023-07-28 11:04:29 +00:00
Josh McKinney
6f659cfb07 ci: add coverage token (#352) 2023-07-28 06:57:53 +00:00
tieway59
bf4944683d Chore: implement Debug & Default common traits (#339)
Implement `Debug & Default` common traits for most structs in src.

Reorder the derive fields to be more consistent:

    Debug, Default, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash

see: https://github.com/ratatui-org/ratatui/issues/307
2023-07-27 01:40:07 +00:00
Josh McKinney
7539f775fe fix(scrollbar)!: move symbols to symbols module (#330)
The symbols and sets are moved from `widgets::scrollbar` to
`symbols::scrollbar`. This makes it consistent with the other symbol
sets and allows us to make the scrollbar module private rather than
re-exporting it.

BREAKING CHANGE: The symbols are now in the `symbols` module. To update
your code, add an import for `ratatui::symbols::scrollbar::*` (or the
specific symbols you need). The scrollbar module is no longer public. To
update your code, remove any `widgets::scrollbar` imports and replace it
with `ratatui::widgets::Scrollbar`.
2023-07-26 11:33:39 +00:00
nathan
8db9fb4aeb fix(cargo): adjust minimum paste version (#348)
ratatui is using features that are currently only available in paste 1.0.2; specifying the minimum version to be 1.0 will consequently cause a compilation error if cargo is only able to use a version less than 1.0.2.
2023-07-26 07:05:12 +00:00
Florian Meißner
d05ab6fb70 fix(readme): fix typo in readme (#344)
Co-authored-by: josh rotenberg <joshrotenberg@users.noreply.github.com>
2023-07-25 21:47:28 +00:00
Josh McKinney
2920e045ba docs(readme): fix widget docs links (#346)
Add scrollbar, clear. Fix Block link. Sort
2023-07-25 21:44:50 +00:00
Josh McKinney
add578a7d6 docs(examples): Add examples readme with gifs (#303)
This commit adds a readme to the examples directory with gifs of each
example. This should make it easier to see what each example does
without having to run it.

I modified the examples to fit better in the gifs. Mostly this was just
removing the margins, but for the block example I cleaned up the code a
bit to make it more readable and changed it so the background bug is not
triggered.

For the table example, the combination of Min, Length, and Percent
constraints was causing the table to panic when the terminal was too
small. I changed the example to use the Max constraint instead of the
Length constraint.

The layout example now shows information about how the layout is
constrained on each block (which is now a paragraph with a block).
2023-07-24 19:05:37 +00:00
Orhun Parmaksız
60a4131384 chore(github): add kdheepak as a maintainer (#343) 2023-07-22 22:12:08 +00:00
Orhun Parmaksız
964190a859 chore(github): rename tui-rs-revival references to ratatui-org (#340) 2023-07-22 10:34:11 +00:00
josh rotenberg
b9290b35d1 fix(readme): fix incorrect template link (#338) 2023-07-20 21:36:15 +00:00
josh rotenberg
daf5890152 fix(example): Fix typo (#337)
the existential feels
2023-07-20 20:00:42 +00:00
josh rotenberg
7e37a96678 fix(readme): fix typo in readme (#336) 2023-07-20 04:39:46 +00:00
josh rotenberg
bcb7417785 update version in README.md (#335) 2023-07-20 04:29:08 +00:00
Hichem
9c956733f7 fix(barchart): empty groups causes panic (#333)
This unlikely to happen, since nobody wants to add an empty group.
Even we fix the panic, things will not render correctly.
So it is better to just not add them to the BarChart.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-07-19 09:37:59 +00:00
Markus
13fb11a62c fix: Correct minor typos in documentation (#331) 2023-07-18 10:06:59 +00:00
EdJoPaTo
0fb1ed85c6 build: forbid unsafe code (#332)
This indicates good (high level) code and is used by tools like cargo-geiger.
2023-07-18 10:03:00 +00:00
Josh McKinney
e2cb11cc30 build(examples): fix cargo make run-examples (#327)
Enables the all-widgets feature so that the calendar example runs correctly
2023-07-17 15:59:56 +00:00
a-kenji
c3f87f245a docs: improve scrollbar doc comment (#329) 2023-07-17 12:05:28 +00:00
Orhun Parmaksız
df90982632 chore(release): prepare for 0.22.0 (#326) 2023-07-17 10:41:45 +00:00
Josh McKinney
bb061fdab6 ci: parallelize CI jobs (#318)
* ci: parallelize CI jobs

- remove the dependency on the lint job from all other jobs
- implement workflow concurrency
- reorder the workflow so that the lint, clippy and coverage jobs are
  scheduled before the test jobs
- run jobs which run for each backend in parallel by calling e.g.
  cargo make test-termion, instead of cargo make test
- add a coverage task to the makefile
- change "cargo-make check" to check all features valid for OS in
  parallel
- run clippy only on the ubuntu-latest runner and check all features
  valid in parallel
- tidy up the workflow file

* ci: simplify Makefile OS detection

Use platform overrides to significantly simplify the Makefile logic
See https://github.com/sagiegurari/cargo-make\#platform-override

* fix(termwiz): skip doc test that requires stdout
2023-07-17 10:31:31 +00:00
Orhun Parmaksız
1ff85535c8 fix(title): remove default alignment and position (#323)
* fix(title): remove default alignment and position

* test(block): add test cases for alignment

* test(block): extend the unit tests for block title alignment
2023-07-17 10:27:58 +00:00
Josh McKinney
33f3212cbf fix: rust-tui-template became a revival project (#320)
Changed the URL https://github.com/orhun/rust-tui-template
into https://github.com/rust-tui-revival/rust-tui-template

Co-authored-by: Geert Stappers <stappers@stappers.it>
2023-07-17 06:31:26 +00:00
Josh McKinney
fb6d4b2f51 refactor(text): simplify reflow implementation (#290)
* refactor(text): split text::* into separate files

* feat(text): expose graphemes on Line

- add `Line::styled()`
- add `Line::styled_graphemes()`
- add `StyledGrapheme::new()`

---------

Co-authored-by: Eyesonjune18 <lowellashton@gmail.com>
2023-07-17 06:27:45 +00:00
Josh McKinney
446efae185 fix(prelude): remove widgets module from prelude (#317)
This helps to keep the prelude small and less likely to conflict with
other crates.

- remove widgets module from prelude as the entire module can be just as
  easily imported with `use ratatui::widgets::*;`
- move prelude module into its own file
- update examples to import widgets module instead of just prelude
- added several modules to prelude to make it possible to qualify
  imports that collide with other types that have similar names
2023-07-16 09:11:59 +00:00
Mano Ségransan
b347201b9f feat(style): Enable setting the underline color for crossterm (#308) (#310)
This commit adds the underline_color() function to the Style and Cell
structs. This enables setting the underline color of text on the
crossterm backend. This is a no-op for the termion and termwiz backends
as they do not support this feature.
2023-07-15 09:57:15 +00:00
Josh McKinney
9f1f59a51c feat(stylize): allow all widgets to be styled (#289)
* feat(stylize): allow all widgets to be styled

- Add styled impl to:
  - Barchart
  - Chart (including Axis and Dataset),
  - Guage and LineGuage
  - List and ListItem
  - Sparkline
  - Table, Row, and Cell
  - Tabs
  - Style
- Allow modifiers to be removed (e.g. .not_italic())
- Allow .bg() to recieve Into<Color>
- Made shorthand methods consistent with modifier names (e.g. dim() not
  dimmed() and underlined() not underline())
- Simplify integration tests
- Add doc comments
- Simplified stylize macros with https://crates.io/crates/paste

* build: run clippy before tests

Runny clippy first means that we fail fast when there is an issue that
can easily be fixed rather than having to wait 30-40s for the failure
2023-07-14 08:37:30 +00:00
Josh McKinney
6f6c355c5c chore(tests): add coverage job to bacon (#312)
- Add two jobs to bacon.toml (one for unit tests, one for all tests)
- Remove "run" job as it doesn't work well with bacon due to no stdin
- Document coverage tooling in CONTRIBUTING.md
2023-07-14 08:37:00 +00:00
Hichem
60150f6236 feat(barchart): set custom text value in the bar (#309)
for now the value is converted to a string and then printed. in many
cases the values are too wide or double values. so it make sense
to set a custom value text instead of the default behavior.

this patch suggests to add a method
"fn text_value(mut self, text_value: String)"
to the Bar, which allows to override the value printed in the bar

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-07-14 04:38:54 +00:00
Josh McKinney
2889c7d084 fix(lint): suspicious_double_ref_op is new in 1.71 (#311)
Fixed tests and completed coverage for `Masked` type.
2023-07-14 02:18:07 +00:00
Florian
57678a5fe8 feat(examples): user_input example cursor movement (#302)
The user_input example now responds to left/right and allows the
character at the cursor position to be deleted / inserted.

Co-authored-by: Leon Sautour <leon1.sautour@epitech.eu>
2023-07-13 10:41:10 +00:00
Hichem
ae8ed8867d feat(barchart): enable barchart groups (#288)
* feat(barchart): allow to add a group of bars

Example: to show the revenue of different companies:
┌────────────────────────┐
│             ████       │
│             ████       │
│      ████   ████       │
│ ▄▄▄▄ ████   ████ ████  │
│ ████ ████   ████ ████  │
│ ████ ████   ████ ████  │
│ █50█ █60█   █90█ █55█  │
│    Mars       April    │
└────────────────────────┘
new structs are introduced: Group and Bar.
the data function is modified to accept "impl Into<Group<'a>>".

a new function "group_gap" is introduced to set the gap between each group

unit test changed to allow the label to be in the center

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>

* feat(barchart)!: center labels by default

The bar labels are currently printed string from the left side of
bar. This commit centers the labels under the bar.

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>

---------

Signed-off-by: Ben Fekih, Hichem <hichem.f@live.de>
2023-07-13 10:27:08 +00:00
Josh McKinney
e66d5cdee0 docs(color): parse more color formats and add docs (#306) 2023-07-12 13:49:28 +00:00
Josh McKinney
804115ac6f feat(prelude): add a prelude (#304)
This allows users of the library to easily use ratatui without a huge amount of imports
2023-07-10 22:59:01 +00:00
Josh McKinney
a1813af297 test(barchart): add unit tests (#301) 2023-07-09 01:17:34 +00:00
Orhun Parmaksız
085fde7d4a chore(github): add EditorConfig config (#300) 2023-07-08 20:21:24 +00:00
Orhun Parmaksız
860a40c13a style(readme): update the style of badges in README.md (#299) 2023-07-08 20:19:56 +00:00
Josh McKinney
0833c9018b docs: improve CONTRIBUTING.md (#277) 2023-07-08 19:02:22 +00:00
a-kenji
f7c4b44962 feat(style): allow Modifiers add/remove in const (#287)
Allows Modifiers to be added or removed from `Style` in a const context.
This can be used in the following way:

```
const DEFAULT_MODIFIER: Modifier = Modifier::BOLD.union(Modifier::ITALIC);
const DEFAULT_STYLE: Style = Style::new()
.fg(Color::Red).bg(Color::Black).add_modifier(DEFAULT_MODIFIER);
```
2023-07-08 10:12:48 +00:00
Josh McKinney
56e44a0efa chore(license): add Ratatui developers to license (#297) 2023-07-06 12:28:48 +00:00
Josh McKinney
ad288f5168 chore(features): enable building with all-features (#286)
Before this change, it wasn't possible to build all features and all
targets at the same time, which prevents rust-analyzer from working
for the whole project.

Adds a bacon.toml file to the project, which is used by bacon
https://dystroy.org/bacon/

Configures docs.rs to show the feature flags that are necessary to
make modules / types / functions available.
2023-07-04 03:58:25 +00:00
Josh McKinney
c5d387cb53 style: fix formatting (#292)
There are a couple of small formatting changes in the current nightly
2023-07-02 18:47:02 +00:00
Samy Rahmani
2f4413be6e feat: stylization shorthands (#283) 2023-07-01 09:14:16 +00:00
Josh McKinney
83d3ec73e7 fix(clippy): ununsed_mut lint for layout (#285)
This lint is slightly more agressive in +nightly than it is in stable.
2023-06-30 22:01:58 +00:00
Josh McKinney
cf8eda04a1 test(paragraph): simplify paragraph benchmarks (#282)
Reduce benchmarks from 60 calls to 18. Now 3 different line counts
(64, 2048, 65535) * 6 different tests (new, render, scroll half / full,
wrap, wrap and scroll)
2023-06-29 22:12:02 +00:00
SLASHLogin
6bdb97c55c ci(makefile): split CI jobs (#278)
- Split CI into build, clippy and test.
- Run format on nightly only due to the settings being unstable
2023-06-26 07:31:30 +00:00
a-kenji
7a6c3d9db1 feat(misc): make builder fn const (#275) (#275)
This allows the following types to be used in a constant context:
- `Layout`
- `Rect`
- `Style`
- `BorderType`
- `Padding`
- `Block`

Also adds several missing `new()` functions to the above types.

Blocks can now be used in the following way:
```
const DEFAULT_BLOCK: Block = Block::new()
    .title_style(Style::new())
    .title_alignment(Alignment::Left)
    .title_position(Position::Top)
    .borders(Borders::ALL)
    .border_style(Style::new())
    .style(Style::reset())
    .padding(Padding::uniform(1));

```

Layouts can now be used in the following way:
``
const DEFAULT_LAYOUT: Layout = Layout::new()
    .direction(Direction::Horizontal)
    .margin(1)
    .expand_to_fill(false);
```

Rects can now be used in the following way:
```
const RECT: Rect = Rect {
    x: 0,
    y: 0,
    width: 10,
    height: 10,
};
```
2023-06-26 00:09:51 +00:00
a-kenji
bfcc5504bb style(widget): inline format arguments (#279) 2023-06-25 13:19:21 +00:00
SLASHLogin
669a4d5652 build: add git pre-push hooks using cargo-husky (#274)
Fixes https://github.com/tui-rs-revival/ratatui/issues/214
- add cargo-husky to dev-deps
- create hook
- update `CONTRIBUTING.md`
- ensure that the hook is not installed in CI
2023-06-24 06:03:31 +00:00
SLASHLogin
b808305507 docs: fix scrollbar ascii illustrations and calendar doc paths (#272)
* docs(src\widgets\scrollbar.rs): wrap scrollbar's visualisation in text block

'cargo doc' and 'rust-analyzer' removes many whitespaces thus making those parts render improperly

* docs(src/widgets/calendar.rs): fix `no item named ...` for calendar.rs

* style(src/widgets/block.rs): format `block.rs`
2023-06-21 11:57:50 +00:00
Samy Rahmani
a04b190251 feat(block): support for having more than one title (#232) 2023-06-19 08:24:36 +00:00
Leon Sautour
e869869462 ci: add feat-wrapping on push and on pull request ci triggers (#267) 2023-06-19 08:18:27 +00:00
a-kenji
20c0051026 docs(lib): add tui-term a pseudoterminal library (#268) 2023-06-19 08:15:52 +00:00
Orhun Parmaksız
284b0b8de0 chore(github): simplify the CODEOWNERS file (#271) 2023-06-19 00:41:18 +00:00
Dheepak Krishnamurthy
130bdf8337 feat: add scrollbar widget (#228)
Represents a scrollbar widget that renders a track, thumb and arrows
either horizontally or vertically. State is kept in ScrollbarState, and
passed as a parameter to the render function.
2023-06-17 19:25:43 +00:00
Orhun Parmaksız
8b7b7881f5 chore(github): add pull request template (#269) 2023-06-17 17:36:34 +00:00
Ende
28a8435a52 fix(layout): cap Contstraint::apply to 100% length (#264)
This function is only currently used in by the chart widget for
constraining the width and height of the legend.
2023-06-17 10:44:13 +00:00
Josh McKinney
dca9871744 fix: revert removal of WTFPL from deny.toml (#266)
This is actually used for terminfo (transitively from termwiz
2023-06-17 08:54:25 +00:00
Josh McKinney
6c2fbbf275 test: add benchmarks for paragraph (#262)
To run the benchmarks:

    cargo bench

And then open the generated `target/criterion/report/index.html` in a
browser.

- add the BSD 2 clause and ISC licenses to the `cargo deny` allowed
licenses list (as a transitive dependency of the `fakeit` crate).
- remove the WTFPL license from the `cargo deny` allowed licenses list
as it is unused and causes a warning when running the check.
2023-06-16 13:09:41 +00:00
Chris Morris
43bac80e4d fix(examples): Correct progress label in gague example (#263) 2023-06-16 09:17:04 +00:00
Orhun Parmaksız
0bf6af17e7 refactor(ci): simplify cargo-make installation (#240)
* refactor(ci): simplify cargo-make installation

* chore(ci): use the latest version of cargo-make

* refactor(ci): remove unused triple values

* chore(ci): list all steps before ci

* fix(ci): checkout the repository

* refactor(ci): remove unnecessary os variables

* refactor(ci): use dtolnay/rust-toolchain action
2023-06-12 23:25:18 +00:00
Josh McKinney
f7af8a3863 style: reformat imports (#219)
Order imports by std, external, crate and group them by crate
2023-06-12 05:07:15 +00:00
Orhun Parmaksız
492af7a92d chore(ci): bump cargo-make version (#239) 2023-06-11 21:01:21 +00:00
Orhun Parmaksız
de4f2b9990 chore(demo): update demo gif (#234) 2023-06-11 20:33:25 +00:00
Orhun Parmaksız
4a2ff204ec chore(ci): enable merge queue for builds (#235)
* chore(ci): enable merge queue for builds

https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue

* style(ci): format the ci workflow
2023-06-11 20:28:17 +00:00
Orhun Parmaksız
26dbb29b3d style(manifest): apply formatting to Cargo.toml (#237) 2023-06-11 20:27:35 +00:00
Orhun Parmaksız
231aae2920 style(config): apply formatting to config files (#238) 2023-06-11 20:26:45 +00:00
Orhun Parmaksız
4cc7380a88 chore(github): fix the syntax in CODEOWNERS file (#236) 2023-06-11 20:25:14 +00:00
Josh McKinney
593fd29d00 chore(demo): update demo gif with a fixed unicode gauge (#227)
* fix(gauge): render gauge with unicode correctly

Gauge now correctly renders a block rather than a space when in unicode mode.

* docs: update demo.gif

- remove existing gif
- upload using VHS (https://github.com/charmbracelet/vhs)
- add instructions to RELEASE.md
- link new gif in README
2023-06-11 16:23:23 +02:00
Philipp Mildenberger
f84d97b17b feat(terminal): expose 'swap_buffers' method 2023-06-10 22:39:55 -07:00
Josh McKinney
ef4d743af3 fix(typos): configure typos linter (#233)
- Adds a new typos.toml
- Prevents ratatui from being marked as a typo of ratatouille
- Changes paragraph tests so that the truncated word is a valid word
2023-06-10 16:31:36 -07:00
Josh McKinney
9ecc4a15df docs: README tweaks (#225)
- Add contributors graph
- Add markdownlint config file
- Reformat README line width to 100
- Add a link to the CHANGELOG
- Remove APPS.md
- Change apps link to the Wiki instead of APPS.md
2023-06-08 11:00:18 +02:00
snpefk
e165025c94 docs(readme): remove duplicated mention of tui-rs-tree-widgets (#223) 2023-06-05 23:00:21 +02:00
Orhun Parmaksız
d711f2aef3 chore(ci): integrate cargo-deny for linting dependencies (#221) 2023-06-04 17:32:20 +02:00
Nydragon
e724bec987 chore(commitizen): add commitizen config (#222)
* style(commitizen): add commitizen

add customized commitizen config to match repo needs

implement request mentioned in [#214](https://github.com/tui-rs-revival/ratatui/issues/214) by @joshka

* docs(CONTRIBUTING.md): add a section for the commitizen installation

BREAKING_CHANGE:

* style(commitizen): update breaking change default to false
2023-06-04 17:31:49 +02:00
Josh McKinney
40b3543c3f style(comments): set comment length to wrap at 100 chars (#218)
This is an opinionated default that helps avoid horizontal scrolling.
100 is the most common width on github rust projects and works well for
displaying code on a 16in macbook pro.
2023-06-04 12:34:05 +02:00
Josh McKinney
e95b5127ca docs(lib): fixup tui refs in widgets/mod.rs (#216) 2023-06-04 12:33:09 +02:00
Josh McKinney
5243aa0628 docs(lib): add backend docs (#213) 2023-06-02 19:13:56 +02:00
Yuri Astrakhan
509d18501c chore: lint and doc cleanup (#191)
* chore: Lint and doc cleanup

A few more minor cleanups, mostly in documentation

* Remove unused comment
2023-06-02 16:03:34 +02:00
Josh McKinney
77067bdc58 docs: add CODEOWNERS file (#212)
See https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
2023-06-02 13:21:20 +02:00
Josh McKinney
358b50ba21 build(deps)!: upgrade bitflags to 2.3 (#205)
BREAKING CHANGE: The serde representation of bitflags has changed. Any
existing serialized types that have Borders or Modifiers will need to be
re-serialized. This is documented in the bitflags changelog.
https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md#200-rc2
2023-06-01 15:37:59 +02:00
Josh McKinney
b40ca44e1a docs: update README.md and add hello_world example (#204)
- Reformat summary info
- Add badges for dependencies, discord, license
- point existing badges to shields.io
- add Table of Contents
- tweaked installation instructions to show instructions for new and
existing crates
- moved fork status lower
- chop lines generally to 100 limit
- add a quickstart based on a simplified hello_world example
- added / updated some internal links to point locally
- removed some details to simplify the readme (e.g. tick-rate)
- reordered widgets and pointed these at the widget docs
- adds a hello_world example that has just the absolute basic code
necessary to run a ratatui app. This includes some comments that help
guide the user towards other approaches and considerations for a real
world app.
2023-06-01 15:22:18 +02:00
Josh McKinney
a68d621f2d ci: add code coverage action (#209)
This runs the coverage and uploads the output to
https://app.codecov.io/gh/tui-rs-revival/ratatui/
2023-06-01 04:21:16 -07:00
Orhun Parmaksız
21ca38d9e9 chore(release): prepare for 0.21.0 (#197)
* chore(release): prepare for 0.21.0

* chore(changelog): update changelog for latest changes
2023-05-29 12:09:00 +02:00
Josh McKinney
769efc20d1 fix(reflow): remove debug macro call (#198)
This was accidentally left in the previous commit and causes all the
demos to fail.
2023-05-28 21:43:50 +02:00
TimerErTim
32e416ea95 feat(paragraph): allow Lines to be individually aligned (#149)
`Paragraph` now supports rendering each line in the paragraph with a
different alignment (Center, Left and Right) rather than the entire
paragraph being aligned the same. Each line either overrides the
paragraph's alignment or inherits it if the line's alignment is
unspecified.

- Adds `alignment` field to `Line` and builder methods on `Line` and
`Span`
- Updates reflow module types to be line oriented rather than symbol
oriented to take account of each lines alignment
- Adds unit tests to `Paragraph` to fully capture the existing and new
behavior

---------

Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
2023-05-26 11:58:40 -07:00
Josh McKinney
49e0f4e983 docs: scrape example code from examples/* (#195)
see https://doc.rust-lang.org/nightly/rustdoc/scraped-examples.html
2023-05-24 12:58:04 -07:00
Yuri Astrakhan
e08b466166 chore: inline format args (#190) 2023-05-21 20:46:02 -07:00
Yuri Astrakhan
3f9935bbcc chore: Minor lints, making Clippy happier (#189)
- `Default::default` is hard to read
- a few `map` -> `map_or`
- simplified `match` -> `let-if`

Signed-off-by: Yuri Astrakhan <YuriAstrakhan@gmail.com>
2023-05-21 20:45:37 -07:00
Orhun Parmaksız
ef8bc7c5a8 feat(border): add border! macro for easy bitflag manipulation (#11)
Adds a `border!` macro that takes TOP, BOTTOM, LEFT, RIGHT, and ALL and
returns a Borders object. An empty `border!()` call returns
Borders::NONE

This is gated behind a `macros` feature flag to ensure short build
times. To enable, add the following to your `Cargo.toml`:

```toml
ratatui = { version = 0.21.0, features = ["macros"] }
```

Co-authored-by: C-Jameson <booksncode@gmail.com>
2023-05-21 15:26:39 -07:00
a-kenji
fa02cf0f2b docs(readme): fix small typo in readme (#186) 2023-05-20 14:59:58 -07:00
Orhun Parmaksız
bc66a27baf feat(widgets): add offset() and offset_mut() for table and list state (#12) 2023-05-20 13:44:33 -07:00
Thomas Mauran
3e54ac3aca style(apps): update the style of application list (#184)
* style(APPS): adding categories

* chore(APPS): remove dots at the end of titles

* chore(APPS): rename to other

* chore(APPS): add description and table of contents

* chore(APPS): change table to list and remove authors

* style(apps): apply formatting

* docs(apps): add the description for termchat

---------

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
2023-05-20 20:55:34 +02:00
Amirhossein Akhlaghpour
a425102cf3 feat(color): add FromStr implementation for Color (#180)
* fix: FromStr in Color Struct

* fix: rgb issue

* fix: rgb issue

* fix: add doc

* fix: doctests

* feat: move and add tests

* refactor: rgb & invalid_color test
2023-05-20 18:43:41 +02:00
a-kenji
60cd28005f docs(readme): add termwiz demo to examples (#183) 2023-05-19 19:31:23 +01:00
Josh McKinney
728f82c084 refactor(text): replace Spans with Line (#178)
* refactor: add Line type to replace Spans

`Line` is a significantly better name over `Spans` as the plural causes
confusion and the type really is a representation of a line of text made
up of spans.

This is a backwards compatible version of the approach from
https://github.com/tui-rs-revival/ratatui/pull/175

There is a significant amount of code that uses the Spans type and
methods, so instead of just renaming it, we add a new type and replace
parameters that accepts a `Spans` with a parameter that accepts
`Into<Line>`.

Note that the examples have been intentionally left using `Spans` in
this commit to demonstrate the compiler warnings that will be emitted in
existing code.

Implementation notes:
- moves the Spans code to text::spans and publicly reexports on the text
module. This makes the test in that module only relevant to the Spans
type.
- adds a line module with a copy of the code and tests from Spans with a
single addition: `impl<'a> From<Spans<'a>> for Line<'a>`
- adds tests for `Spans` (created and checked before refactoring)
- adds the same tests for `Line`
- updates all widget methods that accept and store Spans to instead
store `Line` and accept `Into<Line>`

* refactor: move text::Masked to text::masked::Masked

Re-exports the Masked type at text::Masked

* refactor: replace Spans with Line in tests/examples/docs
2023-05-18 20:21:43 +02:00
Orhun Parmaksız
4437835057 feat(backend): add termwiz backend and example (#5)
* build: bump MSRV to 1.65

The latest version of the time crate requires Rust 1.65.0

```
cargo +1.64.0-x86_64-apple-darwin test --no-default-features \
  --features serde,crossterm,all-widgets --lib --tests --examples
error: package `time v0.3.21` cannot be built because it requires rustc
1.65.0 or newer, while the currently active rustc version is 1.64.0
```

* feat(backend): add termwiz backend and demo

* ci(termwiz): add termwiz to makefile.toml

---------

Co-authored-by: Josh McKinney <joshka@users.noreply.github.com>
Co-authored-by: Prabir Shrestha <mail@prabir.me>
2023-05-12 17:58:01 +02:00
Josh McKinney
1cc405d2dc build: bump MSRV to 1.65.0 (#171)
The latest version of the time crate requires Rust 1.65.0

```
cargo +1.64.0-x86_64-apple-darwin test --no-default-features \
  --features serde,crossterm,all-widgets --lib --tests --examples
error: package `time v0.3.21` cannot be built because it requires rustc
1.65.0 or newer, while the currently active rustc version is 1.64.0
```

Also fixes several clippy warnings added in 1.63/1.65. Although these
have been since moved to nursery / pedantic, it doesn't hurt to fix
these issues as part of this change:

- https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq (nursery)
- https://rust-lang.github.io/rust-clippy/master/index.html#bool_to_int_with_if (pedantic)
2023-05-12 17:45:00 +02:00
Josh McKinney
2f0d549a50 feat(text)!: add Masked to display secure data (#168)
Adds a new type Masked that can mask data with a mask character, and can
be used anywhere we expect Cow<'a, str> or Text<'a>. E.g. Paragraph,
ListItem, Table Cells etc.

BREAKING CHANGE:
Because Masked implements From for Text<'a>, code that binds
Into<Text<'a>> without type annotations may no longer compile
(e.g. `Paragraph::new("".as_ref())`)

To fix this, annotate or call to_string() / to_owned() / as_str()
2023-05-09 19:59:24 +02:00
FujiApple
c7aca64ba1 feat(widget): add circle widget (#159) 2023-05-09 19:56:35 +02:00
Josh McKinney
548961f610 test(list): add characterization tests for list (#167)
- also adds builder methods on list state to make it easy to construct
  a list state with selected and offset as a one-liner. Uses `with_` as
  the prefix for these methods as the selected method currently acts as
  a getter rather than a builder.
- cargo tarpaulin suggests only two lines are not covered (the two
  match patterns of the self.start_corner match 223 and 227).
  the body of these lines is covered, so this is probably 100% coverage.
2023-05-09 17:39:01 +02:00
TimerErTim
b3072ce354 style: clippy's variable inlining in format macros 2023-05-07 16:19:34 -07:00
Josh McKinney
98b6b1911c test(buffer): add assert_buffer_eq! and Debug implementation (#161)
- The implementation of Debug is customized to make it easy to use the
output (particularly the content) directly when writing tests (by
surrounding it with `Buffer::with_lines(vec![])`). The styles part of
the message shows the position of every style change, rather than the
style of each cell, which reduces the verbosity of the detail, while
still showing everything necessary to debug the buffer.

```rust
Buffer {
    area: Rect { x: 0, y: 0, width: 12, height: 2 },
    content: [
        "Hello World!",
        "G'day World!",
    ],
    styles: [
        x: 0, y: 0, fg: Reset, bg: Reset, modifier: (empty),
        x: 0, y: 1, fg: Green, bg: Yellow, modifier: BOLD,
    ]
}
```

- The assert_buffer_eq! macro shows debug view and diff of the two
buffers, which makes it easy to understand exactly where the difference
is.

- Also adds a unit test for buffer_set_string_multi_width_overwrite
which was missing from the buffer tests
2023-05-07 21:39:51 +02:00
kyoto7250
ef96109ea5 feat(list): add len() to List 2023-05-06 22:29:54 -07:00
Josh McKinney
cf1a759fa5 test(widget): add unit tests for Paragraph (#156) 2023-05-04 21:29:40 +02:00
a-kenji
86c3fc9fac feat(test): expose test buffer (#160)
Allow a way to expose the buffer of the `TestBackend`,
to easier support different testing methodologies.
2023-05-04 21:28:55 +02:00
Josh McKinney
5f12f06297 ci: add ci, build, and revert to allowed commit types
This is the same list as https://github.com/conventional-changelog/commitlint/tree/master/%40commitlint/config-conventional\#rules
2023-05-04 04:12:55 -07:00
Lowell Thoerner
33b3f4e312 feat(widget): add style methods to Span, Spans, Text (#148)
- add patch_style() and reset_style() to `Span` and `Spans`
- add reset_style() to `Text`
- updated doc for patch_style() on `Text` for clarity.
2023-05-02 15:30:05 -07:00
Josh McKinney
603ec3f10a docs(block): add example for block.inner (#158) 2023-05-02 06:48:38 +01:00
Leon Sautour
37bb82e87d docs(readme): add acknowledgement section (#154) 2023-04-27 14:10:26 +02:00
Orhun Parmaksız
047e0b7e8d style(readme): update project introduction in README.md (#153) 2023-04-27 12:03:37 +01:00
Orhun Parmaksız
782820c34a feat(widget): support adding padding to Block (#20)
Co-authored-by: Igor Mandello <igormandello@gmail.com>
Co-authored-by: Léon Sautour <leon@sautour.net>
2023-04-27 12:30:13 +02:00
Leon Sautour
26cf1f7a89 refactor(examples): refactor paragraph example (#152) 2023-04-27 11:06:45 +01:00
Erich Heine
f7ab4f04ac feat(calendar): add calendar widget (#138) 2023-04-26 23:02:35 +02:00
Erich Heine
2751f08bdc fix(142): cleanup doc example (#145) 2023-04-21 16:06:14 +02:00
wcampbell
0904d448e0 docs(apps): ix rsadsb/adsb_deku radar link (#140) 2023-04-18 18:50:34 +02:00
BADR
fab7952af6 docs(apps): add tenere (#141) 2023-04-18 18:48:53 +02:00
Conrad Ludgate
6af75d6d40 feat(terminal)!: add inline viewport (#114)
Co-authored-by: Florian Dehau <work@fdehau.com>
Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
2023-04-17 14:23:50 +02:00
Josh McKinney
5f1a37f0db fix(canvas)!: use full block for Marker::Block (#133) 2023-04-15 17:40:28 +02:00
Josh McKinney
b7bd3051b1 feat(sparkline): finish #1 Sparkline directions PR (#134)
Co-authored-by: Joseph Price <pricejosephd@gmail.com>
2023-04-14 19:15:56 +02:00
Orhun Parmaksız
7adc3fe19b feat(block): support placing the title on bottom (#36)
Co-authored-by: Spencer Gouw <swyverng55@g.ucla.edu>
Co-authored-by: Benjscho <47790940+Benjscho@users.noreply.github.com>
Co-authored-by: Arijit Basu <sayanarijit@gmail.com>
2023-04-13 22:24:31 +02:00
lesleyrs
4842885aa6 fix(examples): update input in examples to only use press events (#129) 2023-04-13 22:21:35 +02:00
Xithrius
00e8c0d1b0 docs(apps): add twitch-tui (#124) 2023-04-11 13:05:47 +02:00
MeowKing
239efa5fbd docs(readme): update project description (#127) 2023-04-07 16:28:42 +02:00
Brook Jeynes [SSW]
a9ba23bae8 docs(apps): add oxycards (#113) 2023-03-27 10:43:40 +02:00
Orhun Parmaksız
62930f2821 refactor(example): remove redundant vec![] in user_input example (#26)
Co-authored-by: rhysd <lin90162@yahoo.co.jp>
2023-03-25 14:45:28 +01:00
FujiApple
4334c71bc7 docs(apps): re-add trippy to APPS.md (#117) 2023-03-25 12:29:52 +01:00
kpcyrd
21a029f17e refactor(style): Mark some Style fns const so they can be defined globally (#115) 2023-03-24 17:34:06 +01:00
Orhun Parmaksız
9d37c3bd45 docs(changelog): update the empty profile link in contributors (#112) 2023-03-23 09:40:39 +05:30
Arijit Basu
343ec220b4 chore(release): prepare for 0.20.1 (#110) 2023-03-22 23:57:54 +05:30
Josh McKinney
2da4c10384 docs: fixup remaining tui references (#106) 2023-03-22 11:03:45 +05:30
acheronfail
829dfee9e5 Update APPS.md (#108) 2023-03-22 10:57:20 +05:30
UncleScientist
26c7bcfdd5 fix(style): bold needs a bit (#104) 2023-03-20 23:09:27 +05:30
todoesverso
cf1b05d16e docs(apps): add "logss" to apps (#105) 2023-03-20 18:20:22 +01:00
Orhun Parmaksız
cfa8b8042a chore(release): prepare for 0.20.0 (#97) 2023-03-19 18:11:15 +01:00
Orhun Parmaksız
f0c0985708 docs(readme): update crate status badge (#102) 2023-03-19 17:55:48 +01:00
Leon Sautour
73c937bc30 docs(readme): small edits before first release (#101) 2023-03-19 17:49:26 +01:00
Orhun Parmaksız
33e67abbe9 docs(canvas): add documentation for x_bounds, y_bounds (#35)
Co-authored-by: girvel <widauka@ya.ru>
Co-authored-by: Leon Sautour <leon1.sautour@epitech.eu>
Co-authored-by: Arijit Basu <sayanarijit@users.noreply.github.com>
2023-03-19 17:30:23 +01:00
Arijit Basu
c20fb723ef docs(readme): add install instruction and update title (#100) 2023-03-19 16:08:04 +01:00
Orhun Parmaksız
ccd142df97 docs(apps): move 'apps using ratatui' to dedicated file (#98) (#99) 2023-03-19 01:30:47 +01:00
Orhun Parmaksız
f6dbd1c0b5 docs(readme): add systeroid to application list (#92) 2023-03-18 08:11:44 +05:30
Orhun Parmaksız
d38d185d1c feat(cd): add continuous deployment workflow (#93) 2023-03-17 21:19:01 +01:00
Qichao Lan
ef79b72471 docs(readme): add glicol-cli to showcase list (#95) 2023-03-17 21:18:04 +01:00
Orhun Parmaksız
ed12ab16e0 chore(cargo): update project metadata (#94) 2023-03-17 17:03:49 +01:00
Orhun Parmaksız
24820cfcff chore(ci): integrate typos for checking typos (#91) 2023-03-16 15:00:52 +01:00
Kian-Meng Ang
e10f62663e docs: fix typos (#90) 2023-03-16 18:56:50 +05:30
Conrad Ludgate
02573b0ad2 better safe shared layout cache (#62) 2023-03-12 18:23:30 +05:30
Orhun Parmaksız
0dc39434c2 Fix: cassowary/layouts: add extra constraints for fixing Min(v)/Max(v) combination. (#31)
Co-authored-by: Simon Allen <simon@simonallen.org>
2023-03-11 17:11:13 +05:30
Linda_pp
33acfce083 fix(ci): Test MSRV compatibility on CI (#85) 2023-03-08 22:07:19 +05:30
Arijit Basu
79d0eadbd6 docs: update to build more backends (#81)
Co-authored-by: Doug Goldstein <cardoe@cardoe.com>
2023-03-05 13:25:36 +01:00
Orhun Parmaksız
73f7f16298 fix(ci): Bump Rust version to 1.63.0 (#80) 2023-03-02 07:41:06 +01:00
Orhun Parmaksız
66eb0e42fe chore(ci): Change the target branch to main (#79)
Co-authored-by: Leon Sautour <leon@sautour.net>
2023-03-01 11:06:14 +01:00
Orhun Parmaksız
052ae53b6e chore: Integrate committed for checking conventional commits (#77)
Closes #50
2023-02-25 14:36:49 +01:00
Orhun Parmaksız
1c0ed3268b fix(ci): use env for the cargo-make version (#76) 2023-02-22 13:40:04 +01:00
Orhun Parmaksız
0456abb327 fix(widget)!: List should not ignore empty string items (#42)
Fixes issue #680. Handles the case where a list item is created with an empty string, which is not split by the lines iterator.

Co-authored-by: Collin O'Connor <collinoconnor2@gmail.com>
Co-authored-by: Arijit Basu <sayanarijit@users.noreply.github.com>
Co-authored-by: Arijit Basu <sayanarijit@gmail.com>
2023-02-21 13:22:37 +01:00
Jack Wills
ec50458491 docs(readme): Add oxker to application list (#74) 2023-02-21 11:33:52 +01:00
牧心
b834ccaa2f docs(readme): Add app kubectl-watch which uses tui (#73) 2023-02-20 15:35:37 +01:00
Leon Sautour
ffb3de6c36 docs(github): remove pull request template (#68) 2023-02-20 14:32:38 +01:00
Leon Sautour
454c8459f2 docs(contributing): specify the use of unsafe for optimization (#67) 2023-02-20 14:28:49 +01:00
CK Aznable
94a0d09591 docs(readme): add poketex to 'apps using tui' in README (#64) 2023-02-19 12:42:09 +01:00
Orhun Parmaksız
9b7a6ed85d feat(widget): add offset() to TableState (#10)
Co-authored-by: Aaron Rennow <arennow@outlook.com>
2023-02-18 03:11:34 +01:00
Orhun Parmaksız
7e31035114 refactor(style): make bitflags smaller (#13)
Co-authored-by: Cédric Barreteau <cbarrete@users.noreply.github.com>
2023-02-18 03:10:40 +01:00
Orhun Parmaksız
e15a6146f8 feat(widget): add width() to ListItem (#17)
Co-authored-by: Nicholas Howard <nicholas.howard@novatechautomation.com>
2023-02-18 03:09:32 +01:00
Linda_pp
e49cb1126b fix(doc): add 3rd party libraries accidentally removed at #21 (#61) 2023-02-17 13:01:16 +01:00
Linda_pp
142bc5720e feat(ci): add MacOS to CI (#60) 2023-02-17 12:59:18 +01:00
Linda_pp
feaeb7870f fix(ci): fix deprecation warnings on CI (#58)
* fix(ci): fix deprecation warnings on CI

* fix(ci): remove unnecessary step in CI workflow
2023-02-17 06:25:51 +05:30
Linda_pp
9df0eefe49 chore(ci): re-enable clippy on CI (#59) 2023-02-16 18:51:54 +05:30
Linda_pp
8e89a9377a chore: update rust-version to 1.59 in Cargo.toml (#57) 2023-02-16 08:38:30 +05:30
Orhun Parmaksız
d3df8fe7ef fix: Fix user_input example double key press registered on windows
Co-authored-by: 朕与将军解战袍 <72246322+a1393323447@users.noreply.github.com>
2023-02-15 22:52:08 +01:00
Arijit Basu
9feda988a5 chore: Update deps (#51)
* Update deps

Also, temporarily disabled clippy check. Can be discussed in #49.

* Fix termion demo

* chore: fix all clippy warnings

* Call into_raw_mode()

* Update min supported rust version

---------

Co-authored-by: rhysd <lin90162@yahoo.co.jp>
2023-02-15 18:29:50 +05:30
Orhun Parmaksız
9534d533e3 fix: Ignore zero-width symbol on rendering Paragraph
This fixes out-of-bounds crash on rendering `Paragraph` when zero-width
character is at end of line.

fix #642

Co-authored-by: rhysd <lin90162@yahoo.co.jp>
2023-02-15 13:56:54 +01:00
Orhun Parmaksız
85eefe1d8b docs: Expand "Apps" and "Third-party" sections (#21)
* README.md/#Apps using tui: Sort lexically

* README.md/#Apps using tui: Remove Hoard.

Closes #569.

* README.md/#Apps using tui: Add a description to each app.

* README.md/#Apps using tui: Add some more apps.

This is a curated addition.

Here are the apps I chose not to add:

```md
* [Chatui](https://github.com/xaerru/chatui) — ChatApp made using the standard library net module and Tui-rs
* [Corona-rs](https://github.com/varjolintu/corona-rs) — Corona virus statistics with Tui-rs
* [HTTP Request Tool](https://github.com/Callum-Irving/http-request-tool) — HTTP request sending tool similar to Insomnia, but uses a text user interface (TUI)
* [KRTirtho/portfolio](https://github.com/KRTirtho/portfolio) — A TUI based personal portfolio created using Rust & Tui-rs
* [Picterm](https://github.com/ksk001100/picterm) — TUI image viewer
```

* README.md/#Third party: add more projects

* Undo the capitalization

---------

Co-authored-by: Nicolas Girard <girard.nicolas@gmail.com>
Co-authored-by: Arijit Basu <sayanarijit@gmail.com>
2023-02-15 13:55:44 +01:00
Orhun Parmaksız
3343270680 docs: add tui-input and update xplr in README.md
Also update xplr description.

Co-authored-by: Arijit Basu <sayanarijit@gmail.com>
2023-02-14 19:13:21 +01:00
Orhun Parmaksız
bf9d502742 Update README.md (#39)
Co-authored-by: 晧暐 <henryliking@gmail.com>
2023-02-14 19:09:25 +01:00
Orhun Parmaksız
85c0779ac0 Update README.md (#40)
Co-authored-by: Tin Chung <56880684+chungquantin@users.noreply.github.com>
Co-authored-by: Arijit Basu <sayanarijit@users.noreply.github.com>
2023-02-14 21:29:11 +05:30
Orhun Parmaksız
070de44069 docs: Add hncli to list of applications made with tui-rs (#41)
Co-authored-by: pierreyoda <pierreyoda@users.noreply.github.com>
2023-02-14 16:54:14 +01:00
Orhun Parmaksız
33087e3a99 Fix typos (#45)
Co-authored-by: Howard Halim <howardhalim@gmail.com>
2023-02-14 10:26:07 +01:00
UncleScientist
fe4eb5e771 fix typos (#47) 2023-02-14 10:23:14 +01:00
Owletti
2fead23556 Clarify README.md fork status update
Clarify README.md
2023-02-14 10:22:07 +01:00
Leon Sautour
bc5a9e4c06 doc: Updated readme and contributing guide with updates about the fork (#46)
* doc: Updated readme and contributing guide with updates about the fork

* doc: added missing discord invite link
2023-02-13 16:10:08 +01:00
davidhelbig
fafad6c961 chore: fix typo in layout.rs (#619) 2022-08-14 15:58:02 +02:00
Florian Dehau
a4de409235 chore: add apps using tui 2022-08-14 15:51:31 +02:00
Florian Dehau
a05fd45959 Release v0.19.0 2022-08-14 15:38:31 +02:00
Florian Dehau
24de2f8a96 chore: bump crossterm to v0.25 2022-08-14 15:19:48 +02:00
Florian Dehau
eee37011a5 chore: fix clippy warnings 2022-08-14 14:59:04 +02:00
Florian Dehau
a67706bea0 chore(ci): bump cargo-make to v0.35.16 2022-08-14 14:43:38 +02:00
Linda_pp
faa69b6cfe chore: explicitly set MSRV to 1.56.1 in Cargo.toml 2022-08-14 14:24:54 +02:00
Florian Dehau
ba5ea2deff chore: update README 2022-08-14 13:58:53 +02:00
♫ Christian Krause ♫
a6b25a4877 chore: add panic hook example (#593)
Without a terminal-resetting panic hook there are two main problems when
an application panics:

1.  The report of the panic is distorted because the terminal has not
    properly left the alternate screen and is still in raw mode.

2.  The terminal needs to be manually reset with the `reset` command.

To avoid this, the standard panic hook can be extended to first reset
the terminal.
2022-04-24 16:49:57 +02:00
Florian Dehau
90d8cb6526 chore: add more apps using tui to the README 2022-04-24 15:49:03 +02:00
Florian Dehau
e71faa988e Release v0.18.0 2022-04-24 15:03:09 +02:00
Atk
ed0ae81aae chore: update crossterm to v0.23 (#598) 2022-04-24 14:47:54 +02:00
David
a61b078dea chore: fix clippy warning (#601) 2022-04-24 14:25:50 +02:00
Florian Dehau
85939306e3 Release v0.17.0 2022-01-22 13:30:35 +01:00
Florian Dehau
cf2d9c2c1d feat!: bump MSRV to 1.56.1 and migrate to edition 2021 2022-01-22 13:18:56 +01:00
theogilbert
853d9047b0 feat(widgets/chart): add option to control alignment of axis labels (#568)
* feat(chart): allow custom alignment of first X-Axis label

* refactor(chart): rename ambiguous function parameter

* feat(chart): allow custom alignment of Y-Axis labels

* refactor(chart): refactor axis test cases

* refactor(chart): rename minor variable

* fix(chart): force centered x-axis label near Y-Axis

* fix(chart): fix subtract overflow on small rendering area

* refactor(chart): rename alignment property

* refactor(chart): merge two nested conditions

* refactor(chart): decompose x labels rendering loop
2021-12-23 19:02:10 +01:00
Florian Dehau
6069d89dee chore: fix all clippy warnings 2021-12-23 18:55:43 +01:00
Florian Dehau
d25e263b8e chore: enable clippy on all targets 2021-12-23 18:55:43 +01:00
ljedrz
d05e696d45 chore: fix optional attribute for serde feature (#571)
Signed-off-by: ljedrz <ljedrz@gmail.com>
2021-12-23 18:51:13 +01:00
Petr Portnov
ef583cead9 chore(examples): remove unused demo/util.rs
This module is unused and is not imported by any other module.
2021-11-30 22:35:45 +01:00
Denis
90c4da4e68 Update README.md 2021-11-30 22:25:00 +01:00
Florian Dehau
8032191366 chore: fix table example
Third column in table example was using the `Max` constraint.

But since version 0.16, the layout system does not add a hidden constraint on the last column which would ensure that it fills the remaining available space (a change that was already mentioned in #525). In addition, `tui` does not support sizing based on content because of its immediate mode nature. Therefore, `Max` is now resolved to `0`. Replacing with `Min` fixes the issue.

A new way of specifying constraints is being worked on at #519 which should for more deterministic and advanced layout.
2021-11-21 21:00:34 +01:00
Florian Dehau
c8c03294e1 chore: self contained examples 2021-11-11 16:18:49 +01:00
wcampbell
e00df22588 chore: add adsb_deku/radar to apps using tui (#555)
My `adsb_deku/radar` application uses tui, using the Table and Canvas to show
information and plot airplanes on a latitude/longitude coordinates map.

Signed-off-by: wcampbell <wcampbell1995@gmail.com>
2021-11-11 16:13:42 +01:00
Florian Dehau
9806217a6a feat!: use crossterm as default backend 2021-11-01 23:21:55 +01:00
Florian Dehau
1be5cf2d90 chore: add joshuto to the apps using tui 2021-10-17 19:39:15 +02:00
Florian Dehau
ca68bae4ed feat!(widgets/canvas): use spans for text of labels 2021-10-17 18:55:59 +02:00
Florian Dehau
8c1f58079f chore: fix build 2021-10-17 17:27:32 +02:00
Antoine Büsch
4845c03eec feat(widgets/list): repeat highlight symbol on multi-line items (#533)
When this option is true, the hightlight symbol is repeated for each
line of the selected item, instead of just the first line.
2021-10-17 17:05:51 +02:00
Florian Dehau
532a595c41 chore: pin bitflags version to 1.3 2021-10-17 16:20:40 +02:00
Antoine Büsch
25ce5bc90b chore: bump the minimum supported Rust version to 1.52.1 (#534)
- `const_fn` usage in the `bitflags` crate.
- `unsafe_op_in_unsafe_fn` lint usage in `rust_info` despite pinned `cargo-make` version.
2021-10-17 15:49:31 +02:00
JerzySpendel
80a929ccc6 chore: fix typo (#513) 2021-08-08 11:10:21 +02:00
Christian Visintin
3797863e14 chore: add termscp to list of apps using tui (#510) 2021-08-01 23:08:19 +02:00
Florian Dehau
7870793b4b Release v0.16.0 2021-08-01 20:12:20 +02:00
Florian Dehau
a7c21a9729 fix(widgets): avoid offset panic in Table and List when input changes 2021-08-01 18:01:24 +02:00
Florian Dehau
914d54e672 chore: bump crossterm to 0.20 2021-08-01 17:14:11 +02:00
Florian Dehau
a68e38e59e fix(table): use Layout in table column widths computation 2021-08-01 16:46:54 +02:00
Florian Dehau
e870e5d8a5 feat(layout): add private option to control last chunk expansion 2021-08-01 16:46:54 +02:00
Deepu K Sasidharan
29387e785c Add battleship.rs 2021-08-01 16:44:36 +02:00
Florian Dehau
8eb6336f5e refactor(widgets): remove iter::repeat for blank symbols 2021-08-01 15:08:53 +02:00
Florian Dehau
34a2be6458 fix(widgets/chart): remove panics with long axis labels 2021-08-01 15:08:53 +02:00
Florian Dehau
fbd834469f doc(widgets/clear): clarify usage of clear 2021-06-16 21:58:04 +02:00
Florian Dehau
8da5f740af refactor(examples): show more use case in gauge example 2021-06-16 20:24:14 +02:00
Florian Dehau
38dcddb126 fix(widgets/gauge): apply label style and avoid overflow on large labels 2021-06-16 20:24:14 +02:00
Phillip Cloud
92948d2394 chore: add minesweep to list of apps using tui-rs 2021-06-16 17:25:11 +02:00
orhun
a3a0a80a02 docs: add gpg-tui to the "apps using tui" list 2021-06-16 17:19:34 +02:00
jmrgibson
a5f7019b2a doc: fix minor grammatical errors (#489)
A missing "and" after "an" (which I do all the time) and some tense clarification.
2021-06-16 17:15:13 +02:00
Moritz
e05b80cec1 doc: fix typos in comments. (#486) 2021-06-16 17:14:16 +02:00
Florian Dehau
23d5fbde56 refactor(examples): remove exit key from Events handler
The thread spawned by `Events` to listen for keyboard inputs had knowlegde of
the exit key to exit on its own when it was pressed. It is however a source of
confusion (#491) because the exit behavior is wired in both the event handler
and the input handling performed by the app. In addition, this is not needed as
the thread will exit anyway when the main thread finishes as it is already the
case for the "tick" thread. Therefore, this commit removes both the option to
configure the exit key in the `Events` handler and the option to temporarily
ignore it.
2021-06-16 17:07:59 +02:00
Oleks (オレクス)
a346704cdc feat(block): add option to center and right align the title (#462)
* Added ability to set title alignment, added tests, modified blocks example to show the feature

* Added test for inner with title in block

* Updated block example to show center alignment

* Formatting fixed

* Updated tests to use lamdas and be more concise. Updated title alignmnet code to be more straightforward and have correct behavior when placing title in the center without left border
2021-05-22 16:55:24 +02:00
Andrew Chin
24396d97ed doc: Add doctests that shows how Text can be created from Cow<str> 2021-05-22 16:47:06 +02:00
Andrew Chin
703e41cd49 feat(Text): Add a From<Cow<str>> impl for Text 2021-05-22 16:47:06 +02:00
Florian Dehau
975c4165d0 chore: fix clippy warnings 2021-05-22 15:54:38 +02:00
Arijit Basu
dbf38d847a Add xplr to the "apps using tui" list
`xplr` is a hackable TUI file explorer.
2021-05-22 15:08:06 +02:00
Florian Dehau
91a2519cc3 chore: update links to examples in README
Links now include the fully qualified domain as well as the version.
This will make them work in docs.rs and make sure readers are looking at code which is consistent with the latest version available.
2021-05-03 00:30:59 +02:00
Alexandru Scvortov
a1c3ba2088 fix: actually clear buffer in TestBackend::clear (#461) 2021-05-02 22:35:27 +02:00
Alexandru Scvortov
d47565be5c fix: actually clear buffer in TestBackend::clear (#461) 2021-05-02 22:35:08 +02:00
Florian Dehau
1028d39db0 chore: improve contributing guidelines
* Improve issue templates and make them mandatory.
* Improve CONTRIBUTING.md.
* Add template for pull requests.
2021-05-02 21:42:31 +02:00
Deepu K Sasidharan
b250825c38 Add kdash to apps using this section (#469)
chore: add `kdash` to apps using `tui`
2021-05-02 20:13:56 +02:00
Florian Dehau
90a6a8f2d6 Release v0.15.0 2021-05-02 19:03:01 +02:00
Florian Dehau
414386e797 chore: update rand to 0.8 (#472) 2021-05-02 18:51:59 +02:00
Joey Ezechiëls
3a843d5074 fix(test): remove compile warning in TestBackend::assert_buffer (#466) 2021-05-02 18:27:47 +02:00
Luc Perkins
4e76bfa2ca chore: add Vector to list of apps using tui (#452)
Signed-off-by: Luc Perkins <luc@timber.io>
2021-02-21 14:58:57 +01:00
Simas Toleikis
8832281dcf Update crossterm to 0.19. 2021-01-04 23:26:04 +01:00
Florian Dehau
853f3d9200 feat(terminal): add a read-only view of the terminal state after the draw call 2021-01-04 22:18:28 +01:00
Florian Dehau
67e996c5f4 feat(examples): add third tab to demo to show colors 2021-01-01 15:41:49 +01:00
Florian Dehau
f09863faa0 Release v0.14.0 2021-01-01 14:51:08 +01:00
Florian Dehau
eb1e3be722 fix(widgets/block): make Block::inner return more accurate results on small areas 2020-12-13 17:21:10 +01:00
Sagie Gur-Ari
4ec902b96f chore: make run-examples available on all platforms (#429)
* Make examples available for all platforms
* limit windows to crossterm_demo only and make q exit demos work
2020-12-13 15:29:31 +01:00
Vadim Chekan
74243394d9 fix(widgets/table): draw table header and border even if rows are empty (#426) 2020-12-08 21:49:16 +01:00
Florian Dehau
e7f263efa7 chore(ci): fix cargo-make cache on windows runner 2020-12-07 23:58:27 +01:00
Florian Dehau
0991145c58 chore(ci): simplify ci workflow (#428)
* chore(ci): simplify ci workflow

* use more up to date action
* restrict actions allowed to run
* cache cargo-make
2020-12-06 18:31:54 +01:00
Florian Dehau
01d2a8588a chore(ci): reduce the number of triggered jobs 2020-12-06 16:58:07 +01:00
Florian Dehau
45431a2649 chore: add first contributing guidelines 2020-12-06 16:58:07 +01:00
Florian Dehau
0b78fb9201 chore: use cargo-make in the CI as well 2020-12-06 16:58:07 +01:00
Florian Dehau
9cdff275cb chore: replace make with cargo-make
`cargo-make` make it easier to provide developers of all platforms an unified build workflow.
2020-12-06 16:58:07 +01:00
Arne Beer
77c6e106e4 doc(examples): Add comments to "list" example and fix list direction (#425)
* Add docs to list example and fix list direction

* List example: review adjustments and typo fixes
2020-12-06 16:33:31 +01:00
Florian Dehau
efdd6bfb19 feat(tests): add tests covering new table features 2020-11-29 23:47:58 +01:00
Florian Dehau
117098d2d2 refactor(examples): add missing margin at the bottom of the header of table in the demo 2020-11-29 23:47:58 +01:00
Florian Dehau
f933d892aa chore: update CHANGELOG 2020-11-29 23:47:58 +01:00
Florian Dehau
5ea54792c0 refactor(widgets/table): more flexible table
- control over the style of each cell and its content using the styling capabilities of Text.
- rows with multiple lines.
- fix panics on small areas.
- less generic type parameters.
2020-11-29 23:47:58 +01:00
Tom Forbes
23a9280db7 chore: add gping to the lists of apps using tui (#422)
* Add gping to the lists of apps using tui
2020-11-29 19:28:53 +01:00
Florian Dehau
79e27b1778 refactor(widgets/gauge): stop using unicode blocks by default 2020-11-29 19:27:34 +01:00
DashEightMate
0a05579a1c feat(widgets/gauge): allow gauge to use unicode block for more descriptive progress (#377)
* gauge now uses unicode blocks for more descriptive progress

* removed unnecessary if

* changed function name to better reflect unicode

* standardized block symbols, added no unicode option, added tests

* formatting

* improved readability

* gauge tests now check color

* formatted
2020-11-29 19:20:08 +01:00
Tom Forbes
0030eb4a13 fix(tests): remove clippy warnings about single char push (#424) 2020-11-29 18:35:52 +01:00
pm100
5bf40343eb fix(widgets/paragraph): handle trailing nbsp in wrapped text (#405) 2020-11-15 20:03:33 +01:00
Florian Dehau
1e35f983c4 doc(style): improve documentation of Style 2020-11-14 21:29:56 +01:00
Florian Dehau
a15ac8870b feat(style): add a method to create a style that reset all properties until that point 2020-11-14 21:29:56 +01:00
Florian Dehau
8a27036a54 fix(widgets/block): allow Block to render on small areas 2020-11-14 20:32:10 +01:00
Florian Dehau
8543523f18 Release v0.13.0 2020-11-14 17:37:21 +01:00
acheronfail
5a9b59866b feat(widgets/listitem): derive PartialEq 2020-11-14 16:51:19 +01:00
Dheepak Krishnamurthy
dc76956215 chore: add taskwarrior-tui to the list of apps using tui-rs (#403) 2020-11-14 16:48:43 +01:00
Kemyt
98fb5e4bbd fix(widgets/table): take borders into account when percentage and ration constraints are used (#385)
* Fix percentage and ratio constraints for table to take borders into account

Percentage and ratio constraints don't take borders into account, which causes
the table to not be correctly aligned. This is easily seen when using 50/50
percentage split with bordered table. However fixing this causes the last column
of table to not get printed, so there is probably another problem with columns
width determination.

* Fix rounding of cassowary solved widths to eliminate imprecisions

* Fix formatting to fit convention

Co-authored-by: Kemyt <kemyt4@gmail.com>
2020-11-14 16:45:36 +01:00
214 changed files with 45231 additions and 7210 deletions

16
.cargo-husky/hooks/pre-push Executable file
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@@ -0,0 +1,16 @@
#!/usr/bin/env bash
if !(command cargo-make >/dev/null 2>&1); then # Check if cargo-make is installed
echo Attempting to run cargo-make as part of the pre-push hook but it\'s not installed.
echo Please install it by running the following command:
echo
echo " cargo install --force cargo-make"
echo
echo If you don\'t want to run cargo-make as part of the pre-push hook, you can run
echo the following command instead of git push:
echo
echo " git push --no-verify"
exit 1
fi
cargo make ci

78
.cz.toml Normal file
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@@ -0,0 +1,78 @@
# configuration for https://github.com/commitizen/cz-cli
[tool.commitizen]
name = "cz_customize"
tag_format = "$version"
version_type = "semver"
version_provider = "cargo"
update_changelog_on_bump = true
major_version_zero = true
use_shortcuts = true
[tool.commitizen.customize]
message_template = """{{change_type}}({{scope}}): {{subject}}
{% if body %}\
{{body}}\
{% endif %}
{%if is_breaking_change %}\
BREAKING_CHANGE: \
{% endif %}\
{{footer}}\
"""
example = "feature: this feature enable customize through config file"
schema = "<type>(<scope>): <subject>\n\n<body>\n\n<footer>"
schema_pattern = "(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)\\(\\w+\\):\\s(?P<subject>.*)(\\n\\n(?P<body>.*))?(\\n\\n(?P<footer>.*))?"
# The order needs to be preserved, as it influences the order when executing cz commit/cz c
# Change types
[[tool.commitizen.customize.questions]]
type = "list"
name = "change_type"
choices = [
{ value = "build", name = "build: Changes that affect the build system or external dependencies (example scopes: pip, docker, npm)", key = "b" },
{ value = "chore", name = "chore: A modification that generally does not fall into any other category", key = "c" },
{ value = "ci", name = "ci: Changes to our CI configuration files and scripts (example scopes: GitLabCI)", key = "i" },
{ value = "docs", name = "docs: Documentation only changes", key = "d" },
{ value = "feat", name = "feat: A new feature.", key = "f" },
{ value = "fix", name = "fix: A bug fix.", key = "x" },
{ value = "perf", name = "perf: A code change that improves performance", key = "p" },
{ value = "refactor", name = "refactor: A code change that neither fixes a bug nor adds a feature", key = "r" },
{ value = "revert", name = "revert: Revert previous commits", key = "v" },
{ value = "style", name = "style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)", key = "s" },
{ value = "test", name = "test: Adding missing or correcting existing tests", key = "t" },
]
message = "Select the type of change you are committing"
# The scope of the change, can be a file, class name or other context
[[tool.commitizen.customize.questions]]
type = "input"
name = "scope"
message = "What is the scope of this change? (class or file name): (press [enter] to skip)\n"
# Summary of the changes
[[tool.commitizen.customize.questions]]
"type" = "input"
"name" = "subject"
"message" = "Write a short and imperative summary of the code changes: (lower case and no period)\n"
# The commit body, elaborate the changes if need be.
[[tool.commitizen.customize.questions]]
type = "input"
name = "body"
message = "Provide additional contextual information about the code changes: (press [enter] to skip)\n"
# Specify if the changes are breaking
[[tool.commitizen.customize.questions]]
type = "confirm"
name = "is_breaking_change"
message = "Is this a BREAKING CHANGE?"
default = false
# Reference closing issues and share other
[[tool.commitizen.customize.questions]]
type = "input"
name = "footer"
message = "Footer. Information about Breaking Changes and reference issues that this commit closes: (press [enter] to skip)"

11
.editorconfig Normal file
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@@ -0,0 +1,11 @@
# configuration for https://editorconfig.org
root = true
[*.rs]
indent_style = space
indent_size = 4
[*.yml]
indent_style = space
indent_size = 2

8
.github/CODEOWNERS vendored Normal file
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@@ -0,0 +1,8 @@
# See https://help.github.com/articles/about-codeowners/
# for more info about CODEOWNERS file
# It uses the same pattern rule for gitignore file
# https://git-scm.com/docs/gitignore#_pattern_format
# Maintainers
* @orhun @mindoodoo @sayanarijit @joshka @kdheepak @Valentin271

View File

@@ -1,30 +1,60 @@
---
name: Bug report
about: Create a report to help us improve
about: Create an issue about a bug you encountered
title: ''
labels: bug
assignees: ''
---
**Describe the bug**
<!--
Hi there, sorry `ratatui` is not working as expected.
Please fill this bug report conscientiously.
A detailed and complete issue is more likely to be processed quickly.
-->
## Description
<!--
A clear and concise description of what the bug is.
-->
**To Reproduce**
If possible include a code sample exhibiting the problem.
**Expected behavior**
## To Reproduce
<!--
Try to reduce the issue to a simple code sample exhibiting the problem.
Ideally, fork the project and add a test or an example.
-->
## Expected behavior
<!--
A clear and concise description of what you expected to happen.
-->
**Screenshots**
If applicable, add screenshots to help explain your problem.
**Desktop (please complete the following information):**
- OS: [e.g. Linux,Windows]
- Terminal Emulator [e.g xterm, Konsole, Terminal, iTerm2, ConEmu]
- Font [e.g Inconsolata, Monospace]
- Crate version [e.g. 0.7]
- Backend [e.g termion, crossterm]
## Screenshots
<!--
If applicable, add screenshots, gifs or videos to help explain your problem.
-->
**Additional context**
## Environment
<!--
Add a description of the systems where you are observing the issue. For example:
- OS: Linux
- Terminal Emulator: xterm
- Font: Inconsolata (Patched)
- Crate version: 0.7
- Backend: termion
-->
- OS:
- Terminal Emulator:
- Font:
- Crate version:
- Backend:
## Additional context
<!--
Add any other context about the problem here.
If you already looked into the issue, include all the leads you have explored.
-->

8
.github/ISSUE_TEMPLATE/config.yml vendored Normal file
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@@ -0,0 +1,8 @@
blank_issues_enabled: false
contact_links:
- name: Discord Chat
url: https://discord.gg/pMCEU9hNEj
about: Ask questions about ratatui on Discord
- name: Matrix Chat
url: https://matrix.to/#/#ratatui:matrix.org
about: Ask questions about ratatui on Matrix

View File

@@ -7,14 +7,26 @@ assignees: ''
---
**Is your feature request related to a problem? Please describe.**
## Problem
<!--
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-->
**Describe the solution you'd like**
## Solution
<!--
A clear and concise description of what you want to happen.
Things to consider:
- backward compatibility
- ease of use of the API (https://rust-lang.github.io/api-guidelines/)
- consistency with the rest of the crate
-->
**Describe alternatives you've considered**
## Alternatives
<!--
A clear and concise description of any alternative solutions or features you've considered.
-->
**Additional context**
## Additional context
<!--
Add any other context or screenshots about the feature request here.
-->

18
.github/dependabot.yml vendored Normal file
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@@ -0,0 +1,18 @@
# To get started with Dependabot version updates, you'll need to specify which
# package ecosystems to update and where the package manifests are located.
# Please see the documentation for all configuration options:
# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
version: 2
updates:
# Maintain dependencies for Cargo
- package-ecosystem: "cargo"
directory: "/" # Location of package manifests
schedule:
interval: "weekly"
# Maintain dependencies for GitHub Actions
- package-ecosystem: github-actions
directory: "/"
schedule:
interval: weekly
open-pull-requests-limit: 10

1
.github/pull_request_template.md vendored Normal file
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@@ -0,0 +1 @@
<!-- Please read CONTRIBUTING.md before submitting any pull request. -->

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@@ -0,0 +1,52 @@
#!/bin/bash
# Exit on error. Append "|| true" if you expect an error.
set -o errexit
# Exit on error inside any functions or subshells.
set -o errtrace
# Do not allow use of undefined vars. Use ${VAR:-} to use an undefined VAR
set -o nounset
# Catch the error in case mysqldump fails (but gzip succeeds) in `mysqldump |gzip`
set -o pipefail
# Turn on traces, useful while debugging but commented out by default
# set -o xtrace
last_release="$(git tag --sort=committerdate | grep -P "v0+\.\d+\.\d+$" | tail -1)"
echo "🐭 Last release: ${last_release}"
# detect breaking changes
if [ -n "$(git log --oneline ${last_release}..HEAD | grep '!:')" ]; then
echo "🐭 Breaking changes detected since ${last_release}"
git log --oneline ${last_release}..HEAD | grep '!:'
# increment the minor version
minor="${last_release##v0.}"
minor="${minor%.*}"
next_minor="$((minor + 1))"
next_release="v0.${next_minor}.0"
else
# increment the patch version
patch="${last_release##*.}"
next_patch="$((patch + 1))"
next_release="${last_release/%${patch}/${next_patch}}"
fi
echo "🐭 Next release: ${next_release}"
suffix="alpha"
last_tag="$(git tag --sort=committerdate | tail -1)"
if [[ "${last_tag}" = "${next_release}-${suffix}"* ]]; then
echo "🐭 Last alpha release: ${last_tag}"
# increment the alpha version
# e.g. v0.22.1-alpha.12 -> v0.22.1-alpha.13
alpha="${last_tag##*-${suffix}.}"
next_alpha="$((alpha + 1))"
next_tag="${last_tag/%${alpha}/${next_alpha}}"
else
# increment the patch and start the alpha version from 0
# e.g. v0.22.0 -> v0.22.1-alpha.0
next_tag="${next_release}-${suffix}.0"
fi
# update the crate version
msg="# crate version"
sed -E -i "s/^version = .* ${msg}$/version = \"${next_tag#v}\" ${msg}/" Cargo.toml
echo "NEXT_TAG=${next_tag}" >> $GITHUB_ENV
echo "🐭 Next alpha release: ${next_tag}"

66
.github/workflows/cd.yml vendored Normal file
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@@ -0,0 +1,66 @@
name: Continuous Deployment
on:
workflow_dispatch:
schedule:
# At 00:00 on Saturday
# https://crontab.guru/#0_0_*_*_6
- cron: "0 0 * * 6"
push:
tags:
- "v*.*.*"
defaults:
run:
shell: bash
jobs:
publish-alpha:
name: Create an alpha release
runs-on: ubuntu-latest
permissions:
contents: write
if: ${{ !startsWith(github.event.ref, 'refs/tags/v') }}
steps:
- name: Checkout the repository
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Calculate the next release
run: .github/workflows/calculate-alpha-release.bash
- name: Publish on crates.io
uses: actions-rs/cargo@v1
with:
command: publish
args: --allow-dirty --token ${{ secrets.CARGO_TOKEN }}
- name: Generate a changelog
uses: orhun/git-cliff-action@v2
with:
config: cliff.toml
args: --unreleased --tag ${{ env.NEXT_TAG }} --strip header
env:
OUTPUT: BODY.md
- name: Publish on GitHub
uses: ncipollo/release-action@v1
with:
tag: ${{ env.NEXT_TAG }}
prerelease: true
bodyFile: BODY.md
publish-stable:
name: Create a stable release
runs-on: ubuntu-latest
if: ${{ startsWith(github.event.ref, 'refs/tags/v') }}
steps:
- name: Checkout the repository
uses: actions/checkout@v4
- name: Publish on crates.io
uses: actions-rs/cargo@v1
with:
command: publish
args: --token ${{ secrets.CARGO_TOKEN }}

105
.github/workflows/check-pr.yml vendored Normal file
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@@ -0,0 +1,105 @@
name: Check Pull Requests
on:
pull_request_target:
types:
- opened
- edited
- synchronize
- labeled
- unlabeled
merge_group:
permissions:
pull-requests: write
jobs:
check-title:
runs-on: ubuntu-latest
steps:
- name: Check PR title
if: github.event_name == 'pull_request_target'
uses: amannn/action-semantic-pull-request@v5
id: check_pr_title
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
# Add comment indicating we require pull request titles to follow conventional commits specification
- uses: marocchino/sticky-pull-request-comment@v2
if: always() && (steps.check_pr_title.outputs.error_message != null)
with:
header: pr-title-lint-error
message: |
Thank you for opening this pull request!
We require pull request titles to follow the [Conventional Commits specification](https://www.conventionalcommits.org/en/v1.0.0/) and it looks like your proposed title needs to be adjusted.
Details:
> ${{ steps.check_pr_title.outputs.error_message }}
# Delete a previous comment when the issue has been resolved
- if: ${{ steps.check_pr_title.outputs.error_message == null }}
uses: marocchino/sticky-pull-request-comment@v2
with:
header: pr-title-lint-error
delete: true
check-signed:
runs-on: ubuntu-latest
permissions:
contents: read
pull-requests: write
steps:
# Check commit signature and add comment if needed
- name: Check signed commits in PR
uses: 1Password/check-signed-commits-action@v1
with:
comment: |
Thank you for opening this pull request!
We require commits to be signed and it looks like this PR contains unsigned commits.
Get help in the [CONTRIBUTING.md](https://github.com/ratatui-org/ratatui/blob/main/CONTRIBUTING.md#sign-your-commits)
or on [Github doc](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits).
check-breaking-change-label:
runs-on: ubuntu-latest
env:
# use an environment variable to pass untrusted input to the script
# see https://securitylab.github.com/research/github-actions-untrusted-input/
PR_TITLE: ${{ github.event.pull_request.title }}
steps:
- name: Check breaking change label
id: check_breaking_change
run: |
pattern='^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\(\w+\))?!:'
# Check if pattern matches
if echo "${PR_TITLE}" | grep -qE "$pattern"; then
echo "breaking_change=true" >> $GITHUB_OUTPUT
else
echo "breaking_change=false" >> $GITHUB_OUTPUT
fi
- name: Add label
if: steps.check_breaking_change.outputs.breaking_change == 'true'
uses: actions/github-script@v7
with:
github-token: ${{ secrets.GITHUB_TOKEN }}
script: |
github.rest.issues.addLabels({
issue_number: context.issue.number,
owner: context.repo.owner,
repo: context.repo.repo,
labels: ['breaking change']
})
do-not-merge:
if: ${{ contains(github.event.*.labels.*.name, 'do not merge') }}
name: Prevent Merging
runs-on: ubuntu-latest
steps:
- name: Check for label
run: |
echo "Pull request is labeled as 'do not merge'"
echo "This workflow fails so that the pull request cannot be merged"
exit 1

View File

@@ -1,81 +1,159 @@
on: [push, pull_request]
name: Continuous Integration
name: CI
on:
# Allows you to run this workflow manually from the Actions tab
workflow_dispatch:
push:
branches:
- main
pull_request:
branches:
- main
merge_group:
# ensure that the workflow is only triggered once per PR, subsequent pushes to the PR will cancel
# and restart the workflow. See https://docs.github.com/en/actions/using-jobs/using-concurrency
concurrency:
group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
cancel-in-progress: true
env:
# don't install husky hooks during CI as they are only needed for for pre-push
CARGO_HUSKY_DONT_INSTALL_HOOKS: true
# lint, clippy and coveraget jobs are intentionally early in the workflow to catch simple
# formatting, typos, and missing tests as early as possible. This allows us to fix these and
# resubmit the PR without having to wait for the comprehensive matrix of tests to complete.
jobs:
linux:
name: Linux
lint:
runs-on: ubuntu-latest
strategy:
matrix:
rust: ["1.44.0", "stable"]
steps:
- name: "Install dependencies"
run: sudo apt-get install libncurses5-dev
- uses: actions/checkout@v1
- uses: actions-rs/toolchain@v1
- name: Checkout
if: github.event_name != 'pull_request'
uses: actions/checkout@v4
- name: Checkout
if: github.event_name == 'pull_request'
uses: actions/checkout@v4
with:
profile: default
toolchain: ${{ matrix.rust }}
override: true
- name: "Format"
uses: actions-rs/cargo@v1
ref: ${{ github.event.pull_request.head.sha }}
- name: Install Rust nightly
uses: dtolnay/rust-toolchain@nightly
with:
command: fmt
args: --all -- --check
- name: "Check"
uses: actions-rs/cargo@v1
components: rustfmt
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Check formatting
run: cargo make lint-format
- name: Check documentation
run: cargo make lint-docs
- name: Check conventional commits
uses: crate-ci/committed@master
with:
command: check
args: --examples
- name: "Check (crossterm)"
uses: actions-rs/cargo@v1
args: "-vv"
commits: HEAD
- name: Check typos
uses: crate-ci/typos@master
- name: Lint dependencies
uses: EmbarkStudios/cargo-deny-action@v1
clippy:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
with:
command: check
args: --no-default-features --features=crossterm --example crossterm_demo
- name: "Check (rustbox)"
uses: actions-rs/cargo@v1
components: clippy
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Run cargo make clippy-all
run: cargo make clippy
coverage:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
with:
command: test
args: --no-default-features --features=rustbox --example rustbox_demo
- name: "Check (curses)"
uses: actions-rs/cargo@v1
components: llvm-tools
- name: Install cargo-llvm-cov and cargo-make
uses: taiki-e/install-action@v2
with:
command: check
args: --no-default-features --features=curses --example curses_demo
- name: "Test"
uses: actions-rs/cargo@v1
tool: cargo-llvm-cov,cargo-make
- name: Generate coverage
run: cargo make coverage
- name: Upload to codecov.io
uses: codecov/codecov-action@v3
with:
command: test
token: ${{ secrets.CODECOV_TOKEN }}
fail_ci_if_error: true
check:
strategy:
fail-fast: false
matrix:
os: [ ubuntu-latest, windows-latest, macos-latest ]
toolchain: [ "1.70.0", "stable" ]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust {{ matrix.toolchain }}
uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{ matrix.toolchain }}
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Run cargo make check
run: cargo make check
env:
RUST_BACKTRACE: full
- name: "Clippy"
uses: actions-rs/cargo@v1
with:
command: clippy
args: --all-targets --all-features -- -D warnings
windows:
name: Windows
runs-on: windows-latest
test-doc:
strategy:
fail-fast: false
matrix:
rust: ["1.44.0", "stable"]
os: [ ubuntu-latest, windows-latest, macos-latest ]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v1
- uses: actions-rs/toolchain@v1
with:
profile: default
toolchain: ${{ matrix.rust }}
override: true
- name: "Check (crossterm)"
uses: actions-rs/cargo@v1
with:
command: check
args: --no-default-features --features=crossterm --example crossterm_demo
- name: "Test (crossterm)"
uses: actions-rs/cargo@v1
with:
command: test
args: --no-default-features --features=crossterm --tests --examples
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Test docs
run: cargo make test-doc
env:
RUST_BACKTRACE: full
test:
strategy:
fail-fast: false
matrix:
os: [ ubuntu-latest, windows-latest, macos-latest ]
toolchain: [ "1.70.0", "stable" ]
backend: [ crossterm, termion, termwiz ]
exclude:
# termion is not supported on windows
- os: windows-latest
backend: termion
runs-on: ${{ matrix.os }}
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust ${{ matrix.toolchain }}}
uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{ matrix.toolchain }}
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Install cargo-nextest
uses: taiki-e/install-action@nextest
- name: Test ${{ matrix.backend }}
run: cargo make test-backend ${{ matrix.backend }}
env:
RUST_BACKTRACE: full

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.markdownlint.yaml Normal file
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# configuration for https://github.com/DavidAnson/markdownlint
first-line-heading: false
no-inline-html:
allowed_elements:
- img
- details
- summary
- div
- br
line-length:
line_length: 100
# to support repeated headers in the changelog
no-duplicate-heading: false

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@@ -0,0 +1,451 @@
# Breaking Changes
This document contains a list of breaking changes in each version and some notes to help migrate
between versions. It is compiled manually from the commit history and changelog. We also tag PRs on
github with a [breaking change] label.
[breaking change]: (https://github.com/ratatui-org/ratatui/issues?q=label%3A%22breaking+change%22)
## Summary
This is a quick summary of the sections below:
- [v0.26.0 (unreleased)](#v0260-unreleased)
- `patch_style` & `reset_style` now consume and return `Self`
- Removed deprecated `Block::title_on_bottom`
- `Line` now has an extra `style` field which applies the style to the entire line
- `Block` style methods cannot be created in a const context
- `Tabs::new()` now accepts `IntoIterator<Item: Into<Line<'a>>>`
- `Table::new` now accepts `IntoIterator<Item: Into<Row<'a>>>`.
- [v0.25.0](#v0250)
- Removed `Axis::title_style` and `Buffer::set_background`
- `List::new()` now accepts `IntoIterator<Item = Into<ListItem<'a>>>`
- `Table::new()` now requires specifying the widths
- `Table::widths()` now accepts `IntoIterator<Item = AsRef<Constraint>>`
- Layout::new() now accepts direction and constraint parameters
- The default `Tabs::highlight_style` is now `Style::new().reversed()`
- [v0.24.0](#v0240)
- MSRV is now 1.70.0
- `ScrollbarState`: `position`, `content_length`, and `viewport_content_length` are now `usize`
- `BorderType`: `line_symbols` is now `border_symbols` and returns `symbols::border::set`
- `Frame<'a, B: Backend>` is now `Frame<'a>`
- `Stylize` shorthands for `String` now consume the value and return `Span<'static>`
- `Spans` is removed
- [v0.23.0](#v0230)
- `Scrollbar`: `track_symbol` now takes `Option<&str>`
- `Scrollbar`: symbols moved to `symbols` module
- MSRV is now 1.67.0
- [v0.22.0](#v0220)
- serde representation of `Borders` and `Modifiers` has changed
- [v0.21.0](#v0210)
- MSRV is now 1.65.0
- `terminal::ViewPort` is now an enum
- `"".as_ref()` must be annotated to implement `Into<Text<'a>>`
- `Marker::Block` renders as a block char instead of a bar char
- [v0.20.0](#v0200)
- MSRV is now 1.63.0
- `List` no longer ignores empty strings
## v0.26.0 (unreleased)
### `Table::new()` now accepts `IntoIterator<Item: Into<Row<'a>>>` ([#774])
[#774]: https://github.com/ratatui-org/ratatui/pull/774
Previously, `Table::new()` accepted `IntoIterator<Item=Row<'a>>`. The argument change to
`IntoIterator<Item: Into<Row<'a>>>`, This allows more flexible types from calling scopes, though it
can some break type inference in the calling scope for empty containers.
This can be resolved either by providing an explicit type (e.g. `Vec::<Row>::new()`), or by using
`Table::default()`.
```diff
- let table = Table::new(vec![], widths);
// becomes
+ let table = Table::default().widths(widths);
```
### `Tabs::new()` now accepts `IntoIterator<Item: Into<Line<'a>>>` ([#776])
[#776]: https://github.com/ratatui-org/ratatui/pull/776
Previously, `Tabs::new()` accepted `Vec<T>` where `T: Into<Line<'a>>`. This allows more flexible
types from calling scopes, though it can break some type inference in the calling scope.
This typically occurs when collecting an iterator prior to calling `Tabs::new`, and can be resolved
by removing the call to `.collect()`.
```diff
- let tabs = Tabs::new((0.3).map(|i| format!("{i}")).collect());
// becomes
+ let tabs = Tabs::new((0.3).map(|i| format!("{i}")));
```
### Table::default() now sets segment_size to None and column_spacing to ([#751])
[#751]: https://github.com/ratatui-org/ratatui/pull/751
The default() implementation of Table now sets the column_spacing field to 1 and the segment_size
field to SegmentSize::None. This will affect the rendering of a small amount of apps.
To use the previous default values, call `table.segment_size(Default::default())` and
`table.column_spacing(0)`.
### `patch_style` & `reset_style` now consumes and returns `Self` ([#754])
[#754]: https://github.com/ratatui-org/ratatui/pull/754
Previously, `patch_style` and `reset_style` in `Text`, `Line` and `Span` were using a mutable
reference to `Self`. To be more consistent with the rest of `ratatui`, which is using fluent
setters, these now take ownership of `Self` and return it.
The following example shows how to migrate for `Line`, but the same applies for `Text` and `Span`.
```diff
- let mut line = Line::from("foobar");
- line.patch_style(style);
// becomes
+ let line = Line::new("foobar").patch_style(style);
```
### Remove deprecated `Block::title_on_bottom` ([#757])
[#757]: https://github.com/ratatui-org/ratatui/pull/757
`Block::title_on_bottom` was deprecated in v0.22. Use `Block::title` and `Title::position` instead.
```diff
- block.title("foobar").title_on_bottom();
+ block.title(Title::from("foobar").position(Position::Bottom));
```
### `Block` style methods cannot be used in a const context ([#720])
[#720]: https://github.com/ratatui-org/ratatui/pull/720
Previously the `style()`, `border_style()` and `title_style()` methods could be used to create a
`Block` in a constant context. These now accept `Into<Style>` instead of `Style`. These methods no
longer can be called from a constant context.
### `Line` now has a `style` field that applies to the entire line ([#708])
[#708]: https://github.com/ratatui-org/ratatui/pull/708
Previously the style of a `Line` was stored in the `Span`s that make up the line. Now the `Line`
itself has a `style` field, which can be set with the `Line::style` method. Any code that creates
`Line`s using the struct initializer instead of constructors will fail to compile due to the added
field. This can be easily fixed by adding `..Default::default()` to the field list or by using a
constructor method (`Line::styled()`, `Line::raw()`) or conversion method (`Line::from()`).
Each `Span` contained within the line will no longer have the style that is applied to the line in
the `Span::style` field.
```diff
let line = Line {
spans: vec!["".into()],
alignment: Alignment::Left,
+ ..Default::default()
};
// or
let line = Line::raw(vec!["".into()])
.alignment(Alignment::Left);
```
## [v0.25.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.25.0)
### Removed `Axis::title_style` and `Buffer::set_background` ([#691])
[#691]: https://github.com/ratatui-org/ratatui/pull/691
These items were deprecated since 0.10.
- You should use styling capabilities of [`text::Line`] given as argument of [`Axis::title`]
instead of `Axis::title_style`
- You should use styling capabilities of [`Buffer::set_style`] instead of `Buffer::set_background`
[`text::Line`]: https://docs.rs/ratatui/latest/ratatui/text/struct.Line.html
[`Axis::title`]: https://docs.rs/ratatui/latest/ratatui/widgets/struct.Axis.html#method.title
[`Buffer::set_style`]: https://docs.rs/ratatui/latest/ratatui/buffer/struct.Buffer.html#method.set_style
### `List::new()` now accepts `IntoIterator<Item = Into<ListItem<'a>>>` ([#672])
[#672]: https://github.com/ratatui-org/ratatui/pull/672
Previously `List::new()` took `Into<Vec<ListItem<'a>>>`. This change will throw a compilation
error for `IntoIterator`s with an indeterminate item (e.g. empty vecs).
E.g.
```diff
- let list = List::new(vec![]);
// becomes
+ let list = List::default();
```
### The default `Tabs::highlight_style` is now `Style::new().reversed()` ([#635])
[#635]: https://github.com/ratatui-org/ratatui/pull/635
Previously the default highlight style for tabs was `Style::default()`, which meant that a `Tabs`
widget in the default configuration would not show any indication of the selected tab.
### The default `Tabs::highlight_style` is now `Style::new().reversed()` ([#635])
Previously the default highlight style for tabs was `Style::default()`, which meant that a `Tabs`
widget in the default configuration would not show any indication of the selected tab.
### `Table::new()` now requires specifying the widths of the columns ([#664])
[#664]: https://github.com/ratatui-org/ratatui/pull/664
Previously `Table`s could be constructed without widths. In almost all cases this is an error.
A new widths parameter is now mandatory on `Table::new()`. Existing code of the form:
```diff
- Table::new(rows).widths(widths)
```
Should be updated to:
```diff
+ Table::new(rows, widths)
```
For ease of automated replacement in cases where the amount of code broken by this change is large
or complex, it may be convenient to replace `Table::new` with `Table::default().rows`.
```diff
- Table::new(rows).block(block).widths(widths);
// becomes
+ Table::default().rows(rows).widths(widths)
```
### `Table::widths()` now accepts `IntoIterator<Item = AsRef<Constraint>>` ([#663])
[#663]: https://github.com/ratatui-org/ratatui/pull/663
Previously `Table::widths()` took a slice (`&'a [Constraint]`). This change will introduce clippy
`needless_borrow` warnings for places where slices are passed to this method. To fix these, remove
the `&`.
E.g.
```diff
- let table = Table::new(rows).widths(&[Constraint::Length(1)]);
// becomes
+ let table = Table::new(rows, [Constraint::Length(1)]);
```
### Layout::new() now accepts direction and constraint parameters ([#557])
[#557]: https://github.com/ratatui-org/ratatui/pull/557
Previously layout new took no parameters. Existing code should either use `Layout::default()` or
the new constructor.
```rust
let layout = layout::new()
.direction(Direction::Vertical)
.constraints([Constraint::Min(1), Constraint::Max(2)]);
// becomes either
let layout = layout::default()
.direction(Direction::Vertical)
.constraints([Constraint::Min(1), Constraint::Max(2)]);
// or
let layout = layout::new(Direction::Vertical, [Constraint::Min(1), Constraint::Max(2)]);
```
## [v0.24.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.24.0)
### ScrollbarState field type changed from `u16` to `usize` ([#456])
[#456]: https://github.com/ratatui-org/ratatui/pull/456
In order to support larger content lengths, the `position`, `content_length` and
`viewport_content_length` methods on `ScrollbarState` now take `usize` instead of `u16`
### `BorderType::line_symbols` renamed to `border_symbols` ([#529])
[#529]: https://github.com/ratatui-org/ratatui/issues/529
Applications can now set custom borders on a `Block` by calling `border_set()`. The
`BorderType::line_symbols()` is renamed to `border_symbols()` and now returns a new struct
`symbols::border::Set`. E.g.:
```diff
- let line_set: symbols::line::Set = BorderType::line_symbols(BorderType::Plain);
// becomes
+ let border_set: symbols::border::Set = BorderType::border_symbols(BorderType::Plain);
```
### Generic `Backend` parameter removed from `Frame` ([#530])
[#530]: https://github.com/ratatui-org/ratatui/issues/530
`Frame` is no longer generic over Backend. Code that accepted `Frame<Backend>` will now need to
accept `Frame`. To migrate existing code, remove any generic parameters from code that uses an
instance of a Frame. E.g.:
```diff
- fn ui<B: Backend>(frame: &mut Frame<B>) { ... }
// becomes
+ fn ui(frame: Frame) { ... }
```
### `Stylize` shorthands now consume rather than borrow `String` ([#466])
[#466]: https://github.com/ratatui-org/ratatui/issues/466
In order to support using `Stylize` shorthands (e.g. `"foo".red()`) on temporary `String` values, a
new implementation of `Stylize` was added that returns a `Span<'static>`. This causes the value to
be consumed rather than borrowed. Existing code that expects to use the string after a call will no
longer compile. E.g.
```diff
- let s = String::new("foo");
- let span1 = s.red();
- let span2 = s.blue(); // will no longer compile as s is consumed by the previous line
// becomes
+ let span1 = s.clone().red();
+ let span2 = s.blue();
```
### Deprecated `Spans` type removed (replaced with `Line`) ([#426])
[#426]: https://github.com/ratatui-org/ratatui/issues/426
`Spans` was replaced with `Line` in 0.21.0. `Buffer::set_spans` was replaced with
`Buffer::set_line`.
```diff
- let spans = Spans::from(some_string_str_span_or_vec_span);
- buffer.set_spans(0, 0, spans, 10);
// becomes
+ let line - Line::from(some_string_str_span_or_vec_span);
+ buffer.set_line(0, 0, line, 10);
```
## [v0.23.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.23.0)
### `Scrollbar::track_symbol()` now takes an `Option<&str>` instead of `&str` ([#360])
[#360]: https://github.com/ratatui-org/ratatui/issues/360
The track symbol of `Scrollbar` is now optional, this method now takes an optional value.
```diff
- let scrollbar = Scrollbar::default().track_symbol("|");
// becomes
+ let scrollbar = Scrollbar::default().track_symbol(Some("|"));
```
### `Scrollbar` symbols moved to `symbols::scrollbar` and `widgets::scrollbar` module is private ([#330])
[#330]: https://github.com/ratatui-org/ratatui/issues/330
The symbols for defining scrollbars have been moved to the `symbols` module from the
`widgets::scrollbar` module which is no longer public. To update your code update any imports to the
new module locations. E.g.:
```diff
- use ratatui::{widgets::scrollbar::{Scrollbar, Set}};
// becomes
+ use ratatui::{widgets::Scrollbar, symbols::scrollbar::Set}
```
### MSRV updated to 1.67 ([#361])
[#361]: https://github.com/ratatui-org/ratatui/issues/361
The MSRV of ratatui is now 1.67 due to an MSRV update in a dependency (`time`).
## [v0.22.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.22.0)
### bitflags updated to 2.3 ([#205])
[#205]: https://github.com/ratatui-org/ratatui/issues/205
The serde representation of bitflags has changed. Any existing serialized types that have Borders or
Modifiers will need to be re-serialized. This is documented in the [bitflags
changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md#200-rc2)..
## [v0.21.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.21.0)
### MSRV is 1.65.0 ([#171])
[#171]: https://github.com/ratatui-org/ratatui/issues/171
The minimum supported rust version is now 1.65.0.
### `Terminal::with_options()` stabilized to allow configuring the viewport ([#114])
[#114]: https://github.com/ratatui-org/ratatui/issues/114
In order to support inline viewports, the unstable method `Terminal::with_options()` was stabilized
and `ViewPort` was changed from a struct to an enum.
```diff
let terminal = Terminal::with_options(backend, TerminalOptions {
- viewport: Viewport::fixed(area),
});
// becomes
let terminal = Terminal::with_options(backend, TerminalOptions {
+ viewport: Viewport::Fixed(area),
});
```
### Code that binds `Into<Text<'a>>` now requires type annotations ([#168])
[#168]: https://github.com/ratatui-org/ratatui/issues/168
A new type `Masked` was introduced that implements `From<Text<'a>>`. This causes any code that did
previously did not need to use type annotations to fail to compile. To fix this, annotate or call
to_string() / to_owned() / as_str() on the value. E.g.:
```diff
- let paragraph = Paragraph::new("".as_ref());
// becomes
+ let paragraph = Paragraph::new("".as_str());
```
### `Marker::Block` now renders as a block rather than a bar character ([#133])
[#133]: https://github.com/ratatui-org/ratatui/issues/133
Code using the `Block` marker that previously rendered using a half block character (`'▀'``) now
renders using the full block character (`'█'`). A new marker variant`Bar` is introduced to replace
the existing code.
```diff
- let canvas = Canvas::default().marker(Marker::Block);
// becomes
+ let canvas = Canvas::default().marker(Marker::Bar);
```
## [v0.20.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.20.0)
v0.20.0 was the first release of Ratatui - versions prior to this were release as tui-rs. See the
[Changelog](./CHANGELOG.md) for more details.
### MSRV is update to 1.63.0 ([#80])
[#80]: https://github.com/ratatui-org/ratatui/issues/80
The minimum supported rust version is 1.63.0
### List no longer ignores empty string in items ([#42])
[#42]: https://github.com/ratatui-org/ratatui/issues/42
The following code now renders 3 items instead of 2. Code which relies on the previous behavior will
need to manually filter empty items prior to display.
```rust
let items = vec![
ListItem::new("line one"),
ListItem::new(""),
ListItem::new("line four"),
];
```

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# Contribution guidelines
First off, thank you for considering contributing to Ratatui.
If your contribution is not straightforward, please first discuss the change you wish to make by
creating a new issue before making the change, or starting a discussion on
[discord](https://discord.gg/pMCEU9hNEj).
## Reporting issues
Before reporting an issue on the [issue tracker](https://github.com/ratatui-org/ratatui/issues),
please check that it has not already been reported by searching for some related keywords. Please
also check [`tui-rs` issues](https://github.com/fdehau/tui-rs/issues/) and link any related issues
found.
## Pull requests
All contributions are obviously welcome. Please include as many details as possible in your PR
description to help the reviewer (follow the provided template). Make sure to highlight changes
which may need additional attention or you are uncertain about. Any idea with a large scale impact
on the crate or its users should ideally be discussed in a "Feature Request" issue beforehand.
### Keep PRs small, intentional and focused
Try to do one pull request per change. The time taken to review a PR grows exponential with the size
of the change. Small focused PRs will generally be much more faster to review. PRs that include both
refactoring (or reformatting) with actual changes are more difficult to review as every line of the
change becomes a place where a bug may have been introduced. Consider splitting refactoring /
reformatting changes into a separate PR from those that make a behavioral change, as the tests help
guarantee that the behavior is unchanged.
### Code formatting
Run `cargo make format` before committing to ensure that code is consistently formatted with
rustfmt. Configuration is in [rustfmt.toml](./rustfmt.toml).
### Search `tui-rs` for similar work
The original fork of Ratatui, [`tui-rs`](https://github.com/fdehau/tui-rs/), has a large amount of
history of the project. Please search, read, link, and summarize any relevant
[issues](https://github.com/fdehau/tui-rs/issues/),
[discussions](https://github.com/fdehau/tui-rs/discussions/) and [pull
requests](https://github.com/fdehau/tui-rs/pulls).
### Use conventional commits
We use [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) and check for them as
a lint build step. To help adhere to the format, we recommend to install
[Commitizen](https://commitizen-tools.github.io/commitizen/). By using this tool you automatically
follow the configuration defined in [.cz.toml](.cz.toml). Your commit messages should have enough
information to help someone reading the [CHANGELOG](./CHANGELOG.md) understand what is new just from
the title. The summary helps expand on that to provide information that helps provide more context,
describes the nature of the problem that the commit is solving and any unintuitive effects of the
change. It's rare that code changes can easily communicate intent, so make sure this is clearly
documented.
### Clean up your commits
The final version of your PR that will be committed to the repository should be rebased and tested
against main. Every commit will end up as a line in the changelog, so please squash commits that are
only formatting or incremental fixes to things brought up as part of the PR review. Aim for a single
commit (unless there is a strong reason to stack the commits). See [Git Best Practices - On Sausage
Making](https://sethrobertson.github.io/GitBestPractices/#sausage) for more on this.
### Run CI tests before pushing a PR
We're using [cargo-husky](https://github.com/rhysd/cargo-husky) to automatically run git hooks,
which will run `cargo make ci` before each push. To initialize the hook run `cargo test`. If
`cargo-make` is not installed, it will provide instructions to install it for you. This will ensure
that your code is formatted, compiles and passes all tests before you push. If you need to skip this
check, you can use `git push --no-verify`.
### Sign your commits
We use commit signature verification, which will block commits from being merged via the UI unless
they are signed. To set up your machine to sign commits, see [managing commit signature
verification](https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification)
in GitHub docs.
## Implementation Guidelines
### Setup
Clone the repo and build it using [cargo-make](https://sagiegurari.github.io/cargo-make/)
Ratatui is an ordinary Rust project where common tasks are managed with
[cargo-make](https://github.com/sagiegurari/cargo-make/). It wraps common `cargo` commands with sane
defaults depending on your platform of choice. Building the project should be as easy as running
`cargo make build`.
```shell
git clone https://github.com/ratatui-org/ratatui.git
cd ratatui
cargo make build
```
### Tests
The [test coverage](https://app.codecov.io/gh/ratatui-org/ratatui) of the crate is reasonably
good, but this can always be improved. Focus on keeping the tests simple and obvious and write unit
tests for all new or modified code. Beside the usual doc and unit tests, one of the most valuable
test you can write for Ratatui is a test against the `TestBackend`. It allows you to assert the
content of the output buffer that would have been flushed to the terminal after a given draw call.
See `widgets_block_renders` in [tests/widgets_block.rs](./tests/widget_block.rs) for an example.
When writing tests, generally prefer to write unit tests and doc tests directly in the code file
being tested rather than integration tests in the `tests/` folder.
If an area that you're making a change in is not tested, write tests to characterize the existing
behavior before changing it. This helps ensure that we don't introduce bugs to existing software
using Ratatui (and helps make it easy to migrate apps still using `tui-rs`).
For coverage, we have two [bacon](https://dystroy.org/bacon/) jobs (one for all tests, and one for
unit tests, keyboard shortcuts `v` and `u` respectively) that run
[cargo-llvm-cov](https://github.com/taiki-e/cargo-llvm-cov) to report the coverage. Several plugins
exist to show coverage directly in your editor. E.g.:
- <https://marketplace.visualstudio.com/items?itemName=ryanluker.vscode-coverage-gutters>
- <https://github.com/alepez/vim-llvmcov>
### Documentation
Here are some guidelines for writing documentation in Ratatui.
Every public API **must** be documented.
Keep in mind that Ratatui tends to attract beginner Rust users that may not be familiar with Rust
concepts.
#### Content
The main doc comment should talk about the general features that the widget supports and introduce
the concepts pointing to the various methods. Focus on interaction with various features and giving
enough information that helps understand why you might want something.
Examples should help users understand a particular usage, not test a feature. They should be as
simple as possible.
Prefer hiding imports and using wildcards to keep things concise. Some imports may still be shown
to demonstrate a particular non-obvious import (e.g. `Stylize` trait to use style methods).
Speaking of `Stylize`, you should use it over the more verbose style setters:
```rust
let style = Style::new().red().bold();
// not
let style = Style::default().fg(Color::Red).add_modifier(Modifiers::BOLD);
```
#### Format
- First line is summary, second is blank, third onward is more detail
```rust
/// Summary
///
/// A detailed description
/// with examples.
fn foo() {}
```
- Max line length is 100 characters
See [vscode rewrap extension](https://marketplace.visualstudio.com/items?itemName=stkb.rewrap)
- Doc comments are above macros
i.e.
```rust
/// doc comment
#[derive(Debug)]
struct Foo {}
```
- Code items should be between backticks
i.e. ``[`Block`]``, **NOT** ``[Block]``
### Deprecation notice
We generally want to wait at least two versions before removing deprecated items so users have
time to update. However, if a deprecation is blocking for us to implement a new feature we may
*consider* removing it in a one version notice.
### Use of unsafe for optimization purposes
We don't currently use any unsafe code in Ratatui, and would like to keep it that way. However there
may be specific cases that this becomes necessary in order to avoid slowness. Please see [this
discussion](https://github.com/ratatui-org/ratatui/discussions/66) for more about the decision.
## Continuous Integration
We use Github Actions for the CI where we perform the following checks:
- The code should compile on `stable` and the Minimum Supported Rust Version (MSRV).
- The tests (docs, lib, tests and examples) should pass.
- The code should conform to the default format enforced by `rustfmt`.
- The code should not contain common style issues `clippy`.
You can also check most of those things yourself locally using `cargo make ci` which will offer you
a shorter feedback loop than pushing to github.
## Relationship with `tui-rs`
This project was forked from [`tui-rs`](https://github.com/fdehau/tui-rs/) in February 2023, with the
[blessing of the original author](https://github.com/fdehau/tui-rs/issues/654), Florian Dehau
([@fdehau](https://github.com/fdehau)).
The original repository contains all the issues, PRs and discussion that were raised originally, and
it is useful to refer to when contributing code, documentation, or issues with Ratatui.
We imported all the PRs from the original repository and implemented many of the smaller ones and
made notes on the leftovers. These are marked as draft PRs and labelled as [imported from
tui](https://github.com/ratatui-org/ratatui/pulls?q=is%3Apr+is%3Aopen+label%3A%22imported+from+tui%22).
We have documented the current state of those PRs, and anyone is welcome to pick them up and
continue the work on them.
We have not imported all issues opened on the previous repository. For that reason, anyone wanting
to **work on or discuss** an issue will have to follow the following workflow:
- Recreate the issue
- Start by referencing the **original issue**: ```Referencing issue #[<issue number>](<original
issue link>)```
- Then, paste the original issues **opening** text
You can then resume the conversation by replying to this new issue you have created.

View File

@@ -1,126 +1,289 @@
[package]
name = "tui"
version = "0.12.0"
authors = ["Florian Dehau <work@fdehau.com>"]
description = """
A library to build rich terminal user interfaces or dashboards
"""
documentation = "https://docs.rs/tui/0.10.0/tui/"
name = "ratatui"
version = "0.25.0" # crate version
authors = ["Florian Dehau <work@fdehau.com>", "The Ratatui Developers"]
description = "A library that's all about cooking up terminal user interfaces"
documentation = "https://docs.rs/ratatui/latest/ratatui/"
keywords = ["tui", "terminal", "dashboard"]
repository = "https://github.com/fdehau/tui-rs"
repository = "https://github.com/ratatui-org/ratatui"
readme = "README.md"
license = "MIT"
exclude = ["assets/*", ".github"]
exclude = [
"assets/*",
".github",
"Makefile.toml",
"CONTRIBUTING.md",
"*.log",
"tags",
]
autoexamples = true
edition = "2018"
edition = "2021"
rust-version = "1.70.0"
[badges]
[features]
default = ["termion"]
curses = ["easycurses", "pancurses"]
[dependencies]
bitflags = "1.0"
crossterm = { version = "0.27", optional = true }
termion = { version = "3.0", optional = true }
termwiz = { version = "0.20.0", optional = true }
serde = { version = "1", optional = true, features = ["derive"] }
bitflags = "2.3"
cassowary = "0.3"
unicode-segmentation = "1.2"
indoc = "2.0"
itertools = "0.12"
paste = "1.0.2"
strum = { version = "0.25", features = ["derive"] }
time = { version = "0.3.11", optional = true, features = ["local-offset"] }
unicode-segmentation = "1.10"
unicode-width = "0.1"
termion = { version = "1.5", optional = true }
rustbox = { version = "0.11", optional = true }
crossterm = { version = "0.18", optional = true }
easycurses = { version = "0.12.2", optional = true }
pancurses = { version = "0.16.1", optional = true, features = ["win32a"] }
serde = { version = "1", "optional" = true, features = ["derive"]}
document-features = { version = "0.2.7", optional = true }
lru = "0.12.0"
stability = "0.1.1"
compact_str = "0.7.1"
[dev-dependencies]
rand = "0.7"
argh = "0.1"
anyhow = "1.0.71"
argh = "0.1.12"
better-panic = "0.3.0"
cargo-husky = { version = "1.5.0", default-features = false, features = [
"user-hooks",
] }
color-eyre = "0.6.2"
criterion = { version = "0.5.1", features = ["html_reports"] }
derive_builder = "0.12.0"
fakeit = "1.1"
font8x8 = "0.3.1"
palette = "0.7.3"
pretty_assertions = "1.4.0"
rand = "0.8.5"
rand_chacha = "0.3.1"
rstest = "0.18.2"
serde_json = "1.0.109"
[[example]]
name = "canvas"
path = "examples/canvas.rs"
required-features = ["termion"]
[features]
#! The crate provides a set of optional features that can be enabled in your `cargo.toml` file.
#!
## By default, we enable the crossterm backend as this is a reasonable choice for most applications
## as it is supported on Linux/Mac/Windows systems. We also enable the `underline-color` feature
## which allows you to set the underline color of text.
default = ["crossterm", "underline-color"]
#! Generally an application will only use one backend, so you should only enable one of the following features:
## enables the [`CrosstermBackend`] backend and adds a dependency on the [Crossterm crate].
crossterm = ["dep:crossterm"]
## enables the [`TermionBackend`] backend and adds a dependency on the [Termion crate].
termion = ["dep:termion"]
## enables the [`TermwizBackend`] backend and adds a dependency on the [Termwiz crate].
termwiz = ["dep:termwiz"]
[[example]]
name = "user_input"
path = "examples/user_input.rs"
required-features = ["termion"]
#! The following optional features are available for all backends:
## enables serialization and deserialization of style and color types using the [Serde crate].
## This is useful if you want to save themes to a file.
serde = ["dep:serde", "bitflags/serde", "compact_str/serde"]
## enables the [`border!`] macro.
macros = []
## enables all widgets.
all-widgets = ["widget-calendar"]
#! Widgets that add dependencies are gated behind feature flags to prevent unused transitive
#! dependencies. The available features are:
## enables the [`calendar`] widget module and adds a dependency on the [Time crate].
widget-calendar = ["dep:time"]
#! Underline color is only supported by the [`CrosstermBackend`] backend, and is not supported
#! on Windows 7.
## enables the backend code that sets the underline color.
underline-color = ["dep:crossterm"]
#! The following features are unstable and may change in the future:
## Enable all unstable features.
unstable = ["unstable-segment-size", "unstable-rendered-line-info"]
## Enables the [`Layout::segment_size`](crate::layout::Layout::segment_size) method which is experimental and may change in the
## future. See [Issue #536](https://github.com/ratatui-org/ratatui/issues/536) for more details.
unstable-segment-size = []
## Enables the [`Paragraph::line_count`](crate::widgets::Paragraph::line_count)
## [`Paragraph::line_width`](crate::widgets::Paragraph::line_width) methods
## which are experimental and may change in the future.
## See [Issue 293](https://github.com/ratatui-org/ratatui/issues/293) for more details.
unstable-rendered-line-info = []
[package.metadata.docs.rs]
all-features = true
# see https://doc.rust-lang.org/nightly/rustdoc/scraped-examples.html
cargo-args = ["-Zunstable-options", "-Zrustdoc-scrape-examples"]
rustdoc-args = ["--cfg", "docsrs"]
[[bench]]
name = "barchart"
harness = false
[[bench]]
name = "block"
harness = false
[[bench]]
name = "list"
harness = false
[lib]
bench = false
[[bench]]
name = "paragraph"
harness = false
[[bench]]
name = "sparkline"
harness = false
[[example]]
name = "gauge"
path = "examples/gauge.rs"
required-features = ["termion"]
[[example]]
name = "barchart"
path = "examples/barchart.rs"
required-features = ["termion"]
[[example]]
name = "chart"
path = "examples/chart.rs"
required-features = ["termion"]
[[example]]
name = "paragraph"
path = "examples/paragraph.rs"
required-features = ["termion"]
[[example]]
name = "list"
path = "examples/list.rs"
required-features = ["termion"]
[[example]]
name = "table"
path = "examples/table.rs"
required-features = ["termion"]
[[example]]
name = "tabs"
path = "examples/tabs.rs"
required-features = ["termion"]
[[example]]
name = "custom_widget"
path = "examples/custom_widget.rs"
required-features = ["termion"]
[[example]]
name = "layout"
path = "examples/layout.rs"
required-features = ["termion"]
[[example]]
name = "popup"
path = "examples/popup.rs"
required-features = ["termion"]
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "block"
path = "examples/block.rs"
required-features = ["termion"]
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "canvas"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "calendar"
required-features = ["crossterm", "widget-calendar"]
doc-scrape-examples = true
[[example]]
name = "chart"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "colors"
required-features = ["crossterm"]
# this example is a bit verbose, so we don't want to include it in the docs
doc-scrape-examples = false
[[example]]
name = "colors_rgb"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "custom_widget"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "demo"
# this runs for all of the terminal backends, so it can't be built using --all-features or scraped
doc-scrape-examples = false
[[example]]
name = "demo2"
required-features = ["crossterm", "widget-calendar"]
doc-scrape-examples = true
[[example]]
name = "docsrs"
required-features = ["crossterm"]
doc-scrape-examples = false
[[example]]
name = "gauge"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "hello_world"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "layout"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "constraints"
required-features = ["crossterm"]
doc-scrape-examples = false
[[example]]
name = "flex"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "list"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "modifiers"
required-features = ["crossterm"]
# this example is a bit verbose, so we don't want to include it in the docs
doc-scrape-examples = false
[[example]]
name = "panic"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "paragraph"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "popup"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "ratatui-logo"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "scrollbar"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "sparkline"
path = "examples/sparkline.rs"
required-features = ["termion"]
[[example]]
name = "termion_demo"
path = "examples/termion_demo.rs"
required-features = ["termion"]
[[example]]
name = "rustbox_demo"
path = "examples/rustbox_demo.rs"
required-features = ["rustbox"]
[[example]]
name = "crossterm_demo"
path = "examples/crossterm_demo.rs"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "curses_demo"
path = "examples/curses_demo.rs"
required-features = ["curses"]
name = "table"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "tabs"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "user_input"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "inline"
required-features = ["crossterm"]
doc-scrape-examples = true
[[test]]
name = "state_serde"
required-features = ["serde"]

View File

@@ -1,6 +1,7 @@
The MIT License (MIT)
Copyright (c) 2016 Florian Dehau
Copyright (c) 2016-2022 Florian Dehau
Copyright (c) 2023 The Ratatui Developers
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

116
Makefile
View File

@@ -1,116 +0,0 @@
SHELL=/bin/bash
# ================================ Cargo ======================================
RUST_CHANNEL ?= stable
CARGO_FLAGS =
RUSTUP_INSTALLED = $(shell command -v rustup 2> /dev/null)
TEST_FILTER ?=
ifndef RUSTUP_INSTALLED
CARGO = cargo
else
ifdef CI
CARGO = cargo
else
CARGO = rustup run $(RUST_CHANNEL) cargo
endif
endif
# ================================ Help =======================================
.PHONY: help
help: ## Print all the available commands
@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | \
awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
# =============================== Build =======================================
.PHONY: check
check: ## Validate the project code
$(CARGO) check
.PHONY: build
build: ## Build the project in debug mode
$(CARGO) build $(CARGO_FLAGS)
.PHONY: release
release: CARGO_FLAGS += --release
release: build ## Build the project in release mode
# ================================ Lint =======================================
.PHONY: lint
lint: fmt clippy ## Lint project files
.PHONY: fmt
fmt: ## Check the format of the source code
cargo fmt --all -- --check
.PHONY: clippy
clippy: ## Check the style of the source code and catch common errors
$(CARGO) clippy --all-targets --all-features -- -D warnings
# ================================ Test =======================================
.PHONY: test
test: ## Run the tests
$(CARGO) test --all-features $(TEST_FILTER)
# =============================== Examples ====================================
.PHONY: build-examples
build-examples: ## Build all examples
@$(CARGO) build --release --examples --all-features
.PHONY: run-examples
run-examples: build-examples ## Run all examples
@for file in examples/*.rs; do \
name=$$(basename $${file/.rs/}); \
$(CARGO) run --all-features --release --example $$name; \
done;
# ================================ Doc ========================================
.PHONY: doc
doc: RUST_CHANNEL = nightly
doc: ## Build the documentation (available at ./target/doc)
$(CARGO) doc
# ================================= Watch =====================================
# Requires watchman and watchman-make (https://facebook.github.io/watchman/docs/install.html)
.PHONY: watch
watch: ## Watch file changes and build the project if any
watchman-make -p 'src/**/*.rs' -t check build
.PHONY: watch-test
watch-test: ## Watch files changes and run the tests if any
watchman-make -p 'src/**/*.rs' 'tests/**/*.rs' 'examples/**/*.rs' -t test
.PHONY: watch-doc
watch-doc: RUST_CHANNEL = nightly
watch-doc: ## Watch file changes and rebuild the documentation if any
$(CARGO) watch -x doc -x 'test --doc'
# ================================= Pipelines =================================
.PHONY: stable
stable: RUST_CHANNEL = stable
stable: build lint test ## Run build and tests for stable
.PHONY: beta
beta: RUST_CHANNEL = beta
beta: build lint test ## Run build and tests for beta
.PHONY: nightly
nightly: RUST_CHANNEL = nightly
nightly: build lint test ## Run build, lint and tests for nightly

174
Makefile.toml Normal file
View File

@@ -0,0 +1,174 @@
# configuration for https://github.com/sagiegurari/cargo-make
[config]
skip_core_tasks = true
[env]
# all features except the backend ones
ALL_FEATURES = "all-widgets,macros,serde"
# Windows does not support building termion, so this avoids the build failure by providing two
# sets of flags, one for Windows and one for other platforms.
# Windows: --features=all-widgets,macros,serde,crossterm,termwiz,underline-color
# Other: --features=all-widgets,macros,serde,crossterm,termion,termwiz,underline-color
ALL_FEATURES_FLAG = { source = "${CARGO_MAKE_RUST_TARGET_OS}", default_value = "--features=all-widgets,macros,serde,crossterm,termion,termwiz,unstable", mapping = { "windows" = "--features=all-widgets,macros,serde,crossterm,termwiz,unstable" } }
[tasks.default]
alias = "ci"
[tasks.ci]
description = "Run continuous integration tasks"
dependencies = ["lint-style", "clippy", "check", "test"]
[tasks.lint-style]
description = "Lint code style (formatting, typos, docs)"
dependencies = ["lint-format", "lint-typos", "lint-docs"]
[tasks.lint-format]
description = "Lint code formatting"
toolchain = "nightly"
command = "cargo"
args = ["fmt", "--all", "--check"]
[tasks.format]
description = "Fix code formatting"
toolchain = "nightly"
command = "cargo"
args = ["fmt", "--all"]
[tasks.lint-typos]
description = "Run typo checks"
install_crate = { crate_name = "typos-cli", binary = "typos", test_arg = "--version" }
command = "typos"
[tasks.lint-docs]
description = "Check documentation for errors and warnings"
toolchain = "nightly"
command = "cargo"
args = [
"rustdoc",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
"--",
"-Zunstable-options",
"--check",
"-Dwarnings",
]
[tasks.check]
description = "Check code for errors and warnings"
command = "cargo"
args = [
"check",
"--all-targets",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
]
[tasks.build]
description = "Compile the project"
command = "cargo"
args = [
"build",
"--all-targets",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
]
[tasks.clippy]
description = "Run Clippy for linting"
command = "cargo"
args = [
"clippy",
"--all-targets",
"--tests",
"--benches",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
"--",
"-D",
"warnings",
]
[tasks.install-nextest]
description = "Install cargo-nextest"
install_crate = { crate_name = "cargo-nextest", binary = "cargo-nextest", test_arg = "--help" }
[tasks.test]
description = "Run tests"
run_task = { name = ["test-lib", "test-doc"] }
[tasks.test-lib]
description = "Run default tests"
dependencies = ["install-nextest"]
command = "cargo"
args = [
"nextest",
"run",
"--all-targets",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
]
[tasks.test-doc]
description = "Run documentation tests"
command = "cargo"
args = ["test", "--doc", "--no-default-features", "${ALL_FEATURES_FLAG}"]
[tasks.test-backend]
# takes a command line parameter to specify the backend to test (e.g. "crossterm")
description = "Run backend-specific tests"
dependencies = ["install-nextest"]
command = "cargo"
args = [
"nextest",
"run",
"--all-targets",
"--no-default-features",
"--features",
"${ALL_FEATURES},${@}",
]
[tasks.coverage]
description = "Generate code coverage report"
command = "cargo"
args = [
"llvm-cov",
"--lcov",
"--output-path",
"target/lcov.info",
"--no-default-features",
"${ALL_FEATURES_FLAG}",
]
[tasks.run-example]
private = true
condition = { env_set = ["TUI_EXAMPLE_NAME"] }
command = "cargo"
args = [
"run",
"--release",
"--example",
"${TUI_EXAMPLE_NAME}",
"--features",
"all-widgets",
]
[tasks.build-examples]
description = "Compile project examples"
command = "cargo"
args = ["build", "--examples", "--release", "--features", "all-widgets"]
[tasks.run-examples]
description = "Run project examples"
dependencies = ["build-examples"]
script = '''
#!@duckscript
files = glob_array ./examples/*.rs
for file in ${files}
name = basename ${file}
name = substring ${name} -3
set_env TUI_EXAMPLE_NAME ${name}
cm_run_task run-example
end
'''

487
README.md
View File

@@ -1,118 +1,441 @@
# tui-rs
<details>
<summary>Table of Contents</summary>
[![Build Status](https://github.com/fdehau/tui-rs/workflows/CI/badge.svg)](https://github.com/fdehau/tui-rs/actions?query=workflow%3ACI+)
[![Crate Status](https://img.shields.io/crates/v/tui.svg)](https://crates.io/crates/tui)
[![Docs Status](https://docs.rs/tui/badge.svg)](https://docs.rs/crate/tui/)
- [Ratatui](#ratatui)
- [Installation](#installation)
- [Introduction](#introduction)
- [Other Documentation](#other-documentation)
- [Quickstart](#quickstart)
- [Status of this fork](#status-of-this-fork)
- [Rust version requirements](#rust-version-requirements)
- [Widgets](#widgets)
- [Built in](#built-in)
- [Third\-party libraries, bootstrapping templates and
widgets](#third-party-libraries-bootstrapping-templates-and-widgets)
- [Apps](#apps)
- [Alternatives](#alternatives)
- [Acknowledgments](#acknowledgments)
- [License](#license)
<img src="./assets/demo.gif" alt="Demo cast under Linux Termite with Inconsolata font 12pt">
</details>
`tui-rs` is a [Rust](https://www.rust-lang.org) library to build rich terminal
user interfaces and dashboards. It is heavily inspired by the `Javascript`
library [blessed-contrib](https://github.com/yaronn/blessed-contrib) and the
`Go` library [termui](https://github.com/gizak/termui).
<!-- cargo-rdme start -->
The library itself supports four different backends to draw to the terminal. You
can either choose from:
![Demo](https://github.com/ratatui-org/ratatui/blob/1d39444e3dea6f309cf9035be2417ac711c1abc9/examples/demo2-destroy.gif?raw=true)
- [termion](https://github.com/ticki/termion)
- [rustbox](https://github.com/gchp/rustbox)
- [crossterm](https://github.com/crossterm-rs/crossterm)
- [pancurses](https://github.com/ihalila/pancurses)
<div align="center">
However, some features may only be available in one of the four.
[![Crate Badge]][Crate] [![Docs Badge]][API Docs] [![CI Badge]][CI Workflow] [![License
Badge]](./LICENSE)<br>
[![Codecov Badge]][Codecov] [![Deps.rs Badge]][Deps.rs] [![Discord Badge]][Discord Server]
[![Matrix Badge]][Matrix]<br>
The library is based on the principle of immediate rendering with intermediate
buffers. This means that at each new frame you should build all widgets that are
supposed to be part of the UI. While providing a great flexibility for rich and
interactive UI, this may introduce overhead for highly dynamic content. So, the
implementation try to minimize the number of ansi escapes sequences generated to
draw the updated UI. In practice, given the speed of `Rust` the overhead rather
comes from the terminal emulator than the library itself.
[Ratatui Website] · [API Docs] · [Examples] · [Changelog] · [Breaking Changes]<br>
[Contributing] · [Report a bug] · [Request a Feature] · [Create a Pull Request]
Moreover, the library does not provide any input handling nor any event system and
you may rely on the previously cited libraries to achieve such features.
</div>
### Rust version requirements
# Ratatui
Since version 0.10.0, `tui` requires **rustc version 1.44.0 or greater**.
[Ratatui][Ratatui Website] is a crate for cooking up terminal user interfaces in Rust. It is a
lightweight library that provides a set of widgets and utilities to build complex Rust TUIs.
Ratatui was forked from the [tui-rs] crate in 2023 in order to continue its development.
### [Documentation](https://docs.rs/tui)
## Installation
### Demo
Add `ratatui` and `crossterm` as dependencies to your cargo.toml:
The demo shown in the gif can be run with all available backends
(`examples/*_demo.rs` files). For example to see the `termion` version one could
run:
```
cargo run --example termion_demo --release -- --tick-rate 200
```shell
cargo add ratatui crossterm
```
where `tick-rate` is the UI refresh rate in ms.
Ratatui uses [Crossterm] by default as it works on most platforms. See the [Installation]
section of the [Ratatui Website] for more details on how to use other backends ([Termion] /
[Termwiz]).
The UI code is in [examples/demo/ui.rs](examples/demo/ui.rs) while the
application state is in [examples/demo/app.rs](examples/demo/app.rs).
## Introduction
Beware that the `termion_demo` only works on Unix platforms. If you are a Windows user,
you can see the same demo using the `crossterm` backend with the following command:
Ratatui is based on the principle of immediate rendering with intermediate buffers. This means
that for each frame, your app must render all widgets that are supposed to be part of the UI.
This is in contrast to the retained mode style of rendering where widgets are updated and then
automatically redrawn on the next frame. See the [Rendering] section of the [Ratatui Website]
for more info.
```
cargo run --example crossterm_demo --no-default-features --features="crossterm" --release -- --tick-rate 200
## Other documentation
- [Ratatui Website] - explains the library's concepts and provides step-by-step tutorials
- [API Docs] - the full API documentation for the library on docs.rs.
- [Examples] - a collection of examples that demonstrate how to use the library.
- [Contributing] - Please read this if you are interested in contributing to the project.
- [Changelog] - generated by [git-cliff] utilizing [Conventional Commits].
- [Breaking Changes] - a list of breaking changes in the library.
## Quickstart
The following example demonstrates the minimal amount of code necessary to setup a terminal and
render "Hello World!". The full code for this example which contains a little more detail is in
the [Examples] directory. For more guidance on different ways to structure your application see
the [Application Patterns] and [Hello World tutorial] sections in the [Ratatui Website] and the
various [Examples]. There are also several starter templates available in the [templates]
repository.
Every application built with `ratatui` needs to implement the following steps:
- Initialize the terminal
- A main loop to:
- Handle input events
- Draw the UI
- Restore the terminal state
The library contains a [`prelude`] module that re-exports the most commonly used traits and
types for convenience. Most examples in the documentation will use this instead of showing the
full path of each type.
### Initialize and restore the terminal
The [`Terminal`] type is the main entry point for any Ratatui application. It is a light
abstraction over a choice of [`Backend`] implementations that provides functionality to draw
each frame, clear the screen, hide the cursor, etc. It is parametrized over any type that
implements the [`Backend`] trait which has implementations for [Crossterm], [Termion] and
[Termwiz].
Most applications should enter the Alternate Screen when starting and leave it when exiting and
also enable raw mode to disable line buffering and enable reading key events. See the [`backend`
module] and the [Backends] section of the [Ratatui Website] for more info.
### Drawing the UI
The drawing logic is delegated to a closure that takes a [`Frame`] instance as argument. The
[`Frame`] provides the size of the area to draw to and allows the app to render any [`Widget`]
using the provided [`render_widget`] method. See the [Widgets] section of the [Ratatui Website]
for more info.
### Handling events
Ratatui does not include any input handling. Instead event handling can be implemented by
calling backend library methods directly. See the [Handling Events] section of the [Ratatui
Website] for more info. For example, if you are using [Crossterm], you can use the
[`crossterm::event`] module to handle events.
### Example
```rust
use std::io::{self, stdout};
use crossterm::{
event::{self, Event, KeyCode},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{prelude::*, widgets::*};
fn main() -> io::Result<()> {
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
let mut terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
let mut should_quit = false;
while !should_quit {
terminal.draw(ui)?;
should_quit = handle_events()?;
}
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}
fn handle_events() -> io::Result<bool> {
if event::poll(std::time::Duration::from_millis(50))? {
if let Event::Key(key) = event::read()? {
if key.kind == event::KeyEventKind::Press && key.code == KeyCode::Char('q') {
return Ok(true);
}
}
}
Ok(false)
}
fn ui(frame: &mut Frame) {
frame.render_widget(
Paragraph::new("Hello World!")
.block(Block::default().title("Greeting").borders(Borders::ALL)),
frame.size(),
);
}
```
If the user interface contains glyphs that are not displayed correctly by your terminal, you may want to run
the demo without those symbols:
Running this example produces the following output:
```
cargo run --example crossterm_demo --no-default-features --features="crossterm" --release -- --tick-rate 200 --enhanced-graphics false
![docsrs-hello]
## Layout
The library comes with a basic yet useful layout management object called [`Layout`] which
allows you to split the available space into multiple areas and then render widgets in each
area. This lets you describe a responsive terminal UI by nesting layouts. See the [Layout]
section of the [Ratatui Website] for more info.
```rust
use ratatui::{prelude::*, widgets::*};
fn ui(frame: &mut Frame) {
let main_layout = Layout::new(
Direction::Vertical,
[
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
],
)
.split(frame.size());
frame.render_widget(
Block::new().borders(Borders::TOP).title("Title Bar"),
main_layout[0],
);
frame.render_widget(
Block::new().borders(Borders::TOP).title("Status Bar"),
main_layout[2],
);
let inner_layout = Layout::new(
Direction::Horizontal,
[Constraint::Percentage(50), Constraint::Percentage(50)],
)
.split(main_layout[1]);
frame.render_widget(
Block::default().borders(Borders::ALL).title("Left"),
inner_layout[0],
);
frame.render_widget(
Block::default().borders(Borders::ALL).title("Right"),
inner_layout[1],
);
}
```
### Widgets
Running this example produces the following output:
The library comes with the following list of widgets:
![docsrs-layout]
* [Block](examples/block.rs)
* [Gauge](examples/gauge.rs)
* [Sparkline](examples/sparkline.rs)
* [Chart](examples/chart.rs)
* [BarChart](examples/barchart.rs)
* [List](examples/list.rs)
* [Table](examples/table.rs)
* [Paragraph](examples/paragraph.rs)
* [Canvas (with line, point cloud, map)](examples/canvas.rs)
* [Tabs](examples/tabs.rs)
## Text and styling
Click on each item to see the source of the example. Run the examples with with
cargo (e.g. to run the demo `cargo run --example demo`), and quit by pressing `q`.
The [`Text`], [`Line`] and [`Span`] types are the building blocks of the library and are used in
many places. [`Text`] is a list of [`Line`]s and a [`Line`] is a list of [`Span`]s. A [`Span`]
is a string with a specific style.
You can run all examples by running `make run-examples`.
The [`style` module] provides types that represent the various styling options. The most
important one is [`Style`] which represents the foreground and background colors and the text
attributes of a [`Span`]. The [`style` module] also provides a [`Stylize`] trait that allows
short-hand syntax to apply a style to widgets and text. See the [Styling Text] section of the
[Ratatui Website] for more info.
### Third-party widgets
```rust
use ratatui::{prelude::*, widgets::*};
* [tui-logger](https://github.com/gin66/tui-logger)
fn ui(frame: &mut Frame) {
let areas = Layout::new(
Direction::Vertical,
[
Constraint::Length(1),
Constraint::Length(1),
Constraint::Length(1),
Constraint::Length(1),
Constraint::Min(0),
],
)
.split(frame.size());
### Apps using tui
let span1 = Span::raw("Hello ");
let span2 = Span::styled(
"World",
Style::new()
.fg(Color::Green)
.bg(Color::White)
.add_modifier(Modifier::BOLD),
);
let span3 = "!".red().on_light_yellow().italic();
* [spotify-tui](https://github.com/Rigellute/spotify-tui)
* [bandwhich](https://github.com/imsnif/bandwhich)
* [kmon](https://github.com/orhun/kmon)
* [ytop](https://github.com/cjbassi/ytop)
* [zenith](https://github.com/bvaisvil/zenith)
* [bottom](https://github.com/ClementTsang/bottom)
* [oha](https://github.com/hatoo/oha)
* [gitui](https://github.com/extrawurst/gitui)
* [rust-sadari-cli](https://github.com/24seconds/rust-sadari-cli)
* [desed](https://github.com/SoptikHa2/desed)
* [diskonaut](https://github.com/imsnif/diskonaut)
* [tickrs](https://github.com/tarkah/tickrs)
* [rusty-krab-manager](https://github.com/aryakaul/rusty-krab-manager)
* [termchat](https://github.com/lemunozm/termchat)
let line = Line::from(vec![span1, span2, span3]);
let text: Text = Text::from(vec![line]);
### Alternatives
frame.render_widget(Paragraph::new(text), areas[0]);
// or using the short-hand syntax and implicit conversions
frame.render_widget(
Paragraph::new("Hello World!".red().on_white().bold()),
areas[1],
);
You might want to checkout [Cursive](https://github.com/gyscos/Cursive) for an
alternative solution to build text user interfaces in Rust.
// to style the whole widget instead of just the text
frame.render_widget(
Paragraph::new("Hello World!").style(Style::new().red().on_white()),
areas[2],
);
// or using the short-hand syntax
frame.render_widget(Paragraph::new("Hello World!").blue().on_yellow(), areas[3]);
}
```
Running this example produces the following output:
![docsrs-styling]
[Ratatui Website]: https://ratatui.rs/
[Installation]: https://ratatui.rs/installation/
[Rendering]: https://ratatui.rs/concepts/rendering/
[Application Patterns]: https://ratatui.rs/concepts/application-patterns/
[Hello World tutorial]: https://ratatui.rs/tutorials/hello-world/
[Backends]: https://ratatui.rs/concepts/backends/
[Widgets]: https://ratatui.rs/how-to/widgets/
[Handling Events]: https://ratatui.rs/concepts/event-handling/
[Layout]: https://ratatui.rs/how-to/layout/
[Styling Text]: https://ratatui.rs/how-to/render/style-text/
[templates]: https://github.com/ratatui-org/templates/
[Examples]: https://github.com/ratatui-org/ratatui/tree/main/examples/README.md
[Report a bug]: https://github.com/ratatui-org/ratatui/issues/new?labels=bug&projects=&template=bug_report.md
[Request a Feature]: https://github.com/ratatui-org/ratatui/issues/new?labels=enhancement&projects=&template=feature_request.md
[Create a Pull Request]: https://github.com/ratatui-org/ratatui/compare
[git-cliff]: https://git-cliff.org
[Conventional Commits]: https://www.conventionalcommits.org
[API Docs]: https://docs.rs/ratatui
[Changelog]: https://github.com/ratatui-org/ratatui/blob/main/CHANGELOG.md
[Contributing]: https://github.com/ratatui-org/ratatui/blob/main/CONTRIBUTING.md
[Breaking Changes]: https://github.com/ratatui-org/ratatui/blob/main/BREAKING-CHANGES.md
[docsrs-hello]: https://github.com/ratatui-org/ratatui/blob/c3c3c289b1eb8d562afb1931adb4dc719cd48490/examples/docsrs-hello.png?raw=true
[docsrs-layout]: https://github.com/ratatui-org/ratatui/blob/c3c3c289b1eb8d562afb1931adb4dc719cd48490/examples/docsrs-layout.png?raw=true
[docsrs-styling]: https://github.com/ratatui-org/ratatui/blob/c3c3c289b1eb8d562afb1931adb4dc719cd48490/examples/docsrs-styling.png?raw=true
[`Frame`]: terminal::Frame
[`render_widget`]: terminal::Frame::render_widget
[`Widget`]: widgets::Widget
[`Layout`]: layout::Layout
[`Text`]: text::Text
[`Line`]: text::Line
[`Span`]: text::Span
[`Style`]: style::Style
[`style` module]: style
[`Stylize`]: style::Stylize
[`Backend`]: backend::Backend
[`backend` module]: backend
[`crossterm::event`]: https://docs.rs/crossterm/latest/crossterm/event/index.html
[Crate]: https://crates.io/crates/ratatui
[Crossterm]: https://crates.io/crates/crossterm
[Termion]: https://crates.io/crates/termion
[Termwiz]: https://crates.io/crates/termwiz
[tui-rs]: https://crates.io/crates/tui
[Crate Badge]: https://img.shields.io/crates/v/ratatui?logo=rust&style=flat-square
[License Badge]: https://img.shields.io/crates/l/ratatui?style=flat-square
[CI Badge]:
https://img.shields.io/github/actions/workflow/status/ratatui-org/ratatui/ci.yml?style=flat-square&logo=github
[CI Workflow]: https://github.com/ratatui-org/ratatui/actions/workflows/ci.yml
[Codecov Badge]:
https://img.shields.io/codecov/c/github/ratatui-org/ratatui?logo=codecov&style=flat-square&token=BAQ8SOKEST
[Codecov]: https://app.codecov.io/gh/ratatui-org/ratatui
[Deps.rs Badge]: https://deps.rs/repo/github/ratatui-org/ratatui/status.svg?style=flat-square
[Deps.rs]: https://deps.rs/repo/github/ratatui-org/ratatui
[Discord Badge]:
https://img.shields.io/discord/1070692720437383208?label=discord&logo=discord&style=flat-square
[Discord Server]: https://discord.gg/pMCEU9hNEj
[Docs Badge]: https://img.shields.io/docsrs/ratatui?logo=rust&style=flat-square
[Matrix Badge]:
https://img.shields.io/matrix/ratatui-general%3Amatrix.org?style=flat-square&logo=matrix&label=Matrix
[Matrix]: https://matrix.to/#/#ratatui:matrix.org
<!-- cargo-rdme end -->
## Status of this fork
In response to the original maintainer [**Florian Dehau**](https://github.com/fdehau)'s issue
regarding the [future of `tui-rs`](https://github.com/fdehau/tui-rs/issues/654), several members of
the community forked the project and created this crate. We look forward to continuing the work
started by Florian 🚀
In order to organize ourselves, we currently use a [Discord server](https://discord.gg/pMCEU9hNEj),
feel free to join and come chat! There is also a [Matrix](https://matrix.org/) bridge available at
[#ratatui:matrix.org](https://matrix.to/#/#ratatui:matrix.org).
While we do utilize Discord for coordinating, it's not essential for contributing.
Our primary open-source workflow is centered around GitHub.
For significant discussions, we rely on GitHub — please open an issue, a discussion or a PR.
Please make sure you read the updated [contributing](./CONTRIBUTING.md) guidelines, especially if
you are interested in working on a PR or issue opened in the previous repository.
## Rust version requirements
Since version 0.23.0, The Minimum Supported Rust Version (MSRV) of `ratatui` is 1.67.0.
## Widgets
### Built in
The library comes with the following
[widgets](https://docs.rs/ratatui/latest/ratatui/widgets/index.html):
- [BarChart](https://docs.rs/ratatui/latest/ratatui/widgets/struct.BarChart.html)
- [Block](https://docs.rs/ratatui/latest/ratatui/widgets/block/struct.Block.html)
- [Calendar](https://docs.rs/ratatui/latest/ratatui/widgets/calendar/index.html)
- [Canvas](https://docs.rs/ratatui/latest/ratatui/widgets/canvas/struct.Canvas.html) which allows
rendering [points, lines, shapes and a world
map](https://docs.rs/ratatui/latest/ratatui/widgets/canvas/index.html)
- [Chart](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Chart.html)
- [Clear](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Clear.html)
- [Gauge](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Gauge.html)
- [List](https://docs.rs/ratatui/latest/ratatui/widgets/struct.List.html)
- [Paragraph](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Paragraph.html)
- [Scrollbar](https://docs.rs/ratatui/latest/ratatui/widgets/scrollbar/struct.Scrollbar.html)
- [Sparkline](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Sparkline.html)
- [Table](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Table.html)
- [Tabs](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Tabs.html)
Each widget has an associated example which can be found in the [Examples] folder. Run each example
with cargo (e.g. to run the gauge example `cargo run --example gauge`), and quit by pressing `q`.
You can also run all examples by running `cargo make run-examples` (requires `cargo-make` that can
be installed with `cargo install cargo-make`).
### Third-party libraries, bootstrapping templates and widgets
- [ansi-to-tui](https://github.com/uttarayan21/ansi-to-tui) — Convert ansi colored text to
`ratatui::text::Text`
- [color-to-tui](https://github.com/uttarayan21/color-to-tui) — Parse hex colors to
`ratatui::style::Color`
- [templates](https://github.com/ratatui-org/templates) — Starter templates for
bootstrapping a Rust TUI application with Ratatui & crossterm
- [tui-builder](https://github.com/jkelleyrtp/tui-builder) — Batteries-included MVC framework for
Tui-rs + Crossterm apps
- [tui-clap](https://github.com/kegesch/tui-clap-rs) — Use clap-rs together with Tui-rs
- [tui-log](https://github.com/kegesch/tui-log-rs) — Example of how to use logging with Tui-rs
- [tui-logger](https://github.com/gin66/tui-logger) — Logger and Widget for Tui-rs
- [tui-realm](https://github.com/veeso/tui-realm) — Tui-rs framework to build stateful applications
with a React/Elm inspired approach
- [tui-realm-treeview](https://github.com/veeso/tui-realm-treeview) — Treeview component for
Tui-realm
- [tui-rs-tree-widgets](https://github.com/EdJoPaTo/tui-rs-tree-widget) — Widget for tree data
structures.
- [tui-windows](https://github.com/markatk/tui-windows-rs) — Tui-rs abstraction to handle multiple
windows and their rendering
- [tui-textarea](https://github.com/rhysd/tui-textarea) — Simple yet powerful multi-line text editor
widget supporting several key shortcuts, undo/redo, text search, etc.
- [tui-input](https://github.com/sayanarijit/tui-input) — TUI input library supporting multiple
backends and tui-rs.
- [tui-term](https://github.com/a-kenji/tui-term) — A pseudoterminal widget library
that enables the rendering of terminal applications as ratatui widgets.
## Apps
Check out [awesome-ratatui](https://github.com/ratatui-org/awesome-ratatui) for a curated list of
awesome apps/libraries built with `ratatui`!
## Alternatives
You might want to checkout [Cursive](https://github.com/gyscos/Cursive) for an alternative solution
to build text user interfaces in Rust.
## Acknowledgments
Special thanks to [**Pavel Fomchenkov**](https://github.com/nawok) for his work in designing **an
awesome logo** for the ratatui project and ratatui-org organization.
## License
[MIT](LICENSE)
[MIT](./LICENSE)

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# Creating a Release
[crates.io](https://crates.io/crates/ratatui) releases are automated via [GitHub
actions](.github/workflows/cd.yml) and triggered by pushing a tag.
1. Record a new demo gif if necessary. The preferred tool for this is
[vhs](https://github.com/charmbracelet/vhs) (installation instructions in README).
```shell
cargo build --example demo2
vhs examples/demo2.tape
```
1. Switch branches to the images branch and copy demo2.gif to examples/, commit, and push.
1. Grab the permalink from <https://github.com/ratatui-org/ratatui/blob/images/examples/demo2.gif> and
append `?raw=true` to redirect to the actual image url. Then update the link in the main README.
Avoid adding the gif to the git repo as binary files tend to bloat repositories.
1. Bump the version in [Cargo.toml](Cargo.toml).
1. Ensure [CHANGELOG.md](CHANGELOG.md) is updated. [git-cliff](https://github.com/orhun/git-cliff)
can be used for generating the entries.
1. Ensure that any breaking changes are documented in [BREAKING-CHANGES.md](./BREAKING-CHANGES.md)
1. Commit and push the changes.
1. Create a new tag: `git tag -a v[X.Y.Z]`
1. Push the tag: `git push --tags`
1. Wait for [Continuous Deployment](https://github.com/ratatui-org/ratatui/actions) workflow to
finish.
## Alpha Releases
Alpha releases are automatically released every Saturday via [cd.yml](./.github/workflows/cd.yml)
and can be manually be created when necessary by triggering the [Continuous
Deployment](https://github.com/ratatui-org/ratatui/actions/workflows/cd.yml) workflow.
We automatically release an alpha release with a patch level bump + alpha.num weekly (and when we
need to manually). E.g. the last release was 0.22.0, and the most recent alpha release is
0.22.1-alpha.1.
These releases will have whatever happened to be in main at the time of release, so they're useful
for apps that need to get releases from crates.io, but may contain more bugs and be generally less
tested than normal releases.
See [#147](https://github.com/ratatui-org/ratatui/issues/147) and
[#359](https://github.com/ratatui-org/ratatui/pull/359) for more info on the alpha release process.

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# Security Policy
## Supported Versions
We only support the latest version of this crate.
## Reporting a Vulnerability
To report secuirity vulnerability, please use the form at https://github.com/ratatui-org/ratatui/security/advisories/new

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# This is a configuration file for the bacon tool
#
# Bacon repository: https://github.com/Canop/bacon
# Complete help on configuration: https://dystroy.org/bacon/config/
# You can also check bacon's own bacon.toml file
# as an example: https://github.com/Canop/bacon/blob/main/bacon.toml
default_job = "check"
[jobs.check]
command = ["cargo", "check", "--all-features", "--color", "always"]
need_stdout = false
[jobs.check-all]
command = ["cargo", "check", "--all-targets", "--all-features", "--color", "always"]
need_stdout = false
[jobs.check-crossterm]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "crossterm"]
need_stdout = false
[jobs.check-termion]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "termion"]
need_stdout = false
[jobs.check-termwiz]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "termwiz"]
need_stdout = false
[jobs.clippy]
command = [
"cargo", "clippy",
"--all-targets",
"--color", "always",
]
need_stdout = false
[jobs.test]
command = [
"cargo", "test",
"--all-features",
"--color", "always",
"--", "--color", "always", # see https://github.com/Canop/bacon/issues/124
]
need_stdout = true
[jobs.doc]
command = [
"cargo", "+nightly", "doc",
"-Zunstable-options", "-Zrustdoc-scrape-examples",
"--all-features",
"--color", "always",
"--no-deps",
]
env.RUSTDOCFLAGS = "--cfg docsrs"
need_stdout = false
# If the doc compiles, then it opens in your browser and bacon switches
# to the previous job
[jobs.doc-open]
command = [
"cargo", "+nightly", "doc",
"-Zunstable-options", "-Zrustdoc-scrape-examples",
"--all-features",
"--color", "always",
"--no-deps",
"--open",
]
env.RUSTDOCFLAGS = "--cfg docsrs"
need_stdout = false
on_success = "job:doc" # so that we don't open the browser at each change
[jobs.coverage]
command = [
"cargo", "llvm-cov",
"--lcov", "--output-path", "target/lcov.info",
"--all-features",
"--color", "always",
]
[jobs.coverage-unit-tests-only]
command = [
"cargo", "llvm-cov",
"--lcov", "--output-path", "target/lcov.info",
"--lib",
"--all-features",
"--color", "always",
]
# You may define here keybindings that would be specific to
# a project, for example a shortcut to launch a specific job.
# Shortcuts to internal functions (scrolling, toggling, etc.)
# should go in your personal global prefs.toml file instead.
[keybindings]
# alt-m = "job:my-job"
ctrl-c = "job:check-crossterm"
ctrl-t = "job:check-termion"
ctrl-w = "job:check-termwiz"
v = "job:coverage"
u = "job:coverage-unit-tests-only"

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use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
use rand::Rng;
use ratatui::{
buffer::Buffer,
layout::Rect,
prelude::Direction,
widgets::{Bar, BarChart, BarGroup, Widget},
};
/// Benchmark for rendering a barchart.
pub fn barchart(c: &mut Criterion) {
let mut group = c.benchmark_group("barchart");
let mut rng = rand::thread_rng();
for data_count in [64, 256, 2048] {
let data: Vec<Bar> = (0..data_count)
.map(|i| {
Bar::default()
.label(format!("B{i}").into())
.value(rng.gen_range(0..data_count))
})
.collect();
let bargroup = BarGroup::default().bars(&data);
// Render a basic barchart
group.bench_with_input(
BenchmarkId::new("render", data_count),
&BarChart::default().data(bargroup.clone()),
render,
);
// Render an horizontal barchart
group.bench_with_input(
BenchmarkId::new("render_horizontal", data_count),
&BarChart::default()
.direction(Direction::Horizontal)
.data(bargroup.clone()),
render,
);
// Render a barchart with multiple groups
group.bench_with_input(
BenchmarkId::new("render_grouped", data_count),
&BarChart::default()
// We call `data` multiple time to add multiple groups.
// This is not a duplicated call.
.data(bargroup.clone())
.data(bargroup.clone())
.data(bargroup.clone()),
render,
);
}
group.finish();
}
/// Render the widget in a classical size buffer
fn render(bencher: &mut Bencher, barchart: &BarChart) {
let mut buffer = Buffer::empty(Rect::new(0, 0, 200, 50));
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| barchart.clone(),
|bench_barchart| {
bench_barchart.render(buffer.area, &mut buffer);
},
criterion::BatchSize::LargeInput,
)
}
criterion_group!(benches, barchart);
criterion_main!(benches);

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use criterion::{criterion_group, criterion_main, BatchSize, Bencher, BenchmarkId, Criterion};
use ratatui::{
buffer::Buffer,
layout::Rect,
prelude::Alignment,
widgets::{
block::{Position, Title},
Block, Borders, Padding, Widget,
},
};
/// Benchmark for rendering a block.
pub fn block(c: &mut Criterion) {
let mut group = c.benchmark_group("block");
for buffer_size in &[
Rect::new(0, 0, 100, 50), // vertically split screen
Rect::new(0, 0, 200, 50), // 1080p fullscreen with medium font
Rect::new(0, 0, 256, 256), // Max sized area
] {
let buffer_area = buffer_size.area();
// Render an empty block
group.bench_with_input(
BenchmarkId::new("render_empty", buffer_area),
&Block::new(),
|b, block| render(b, block, buffer_size),
);
// Render with all features
group.bench_with_input(
BenchmarkId::new("render_all_feature", buffer_area),
&Block::new()
.borders(Borders::ALL)
.title("test title")
.title(
Title::from("bottom left title")
.alignment(Alignment::Right)
.position(Position::Bottom),
)
.padding(Padding::new(5, 5, 2, 2)),
|b, block| render(b, block, buffer_size),
);
}
group.finish();
}
/// render the block into a buffer of the given `size`
fn render(bencher: &mut Bencher, block: &Block, size: &Rect) {
let mut buffer = Buffer::empty(*size);
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| block.to_owned(),
|bench_block| {
bench_block.render(buffer.area, &mut buffer);
},
BatchSize::SmallInput,
)
}
criterion_group!(benches, block);
criterion_main!(benches);

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use criterion::{criterion_group, criterion_main, BatchSize, Bencher, BenchmarkId, Criterion};
use ratatui::{
buffer::Buffer,
layout::Rect,
widgets::{List, ListItem, ListState, StatefulWidget, Widget},
};
/// Benchmark for rendering a list.
/// It only benchmarks the render with a different amount of items.
pub fn list(c: &mut Criterion) {
let mut group = c.benchmark_group("list");
for line_count in [64, 2048, 16384] {
let lines: Vec<ListItem> = (0..line_count)
.map(|_| ListItem::new(fakeit::words::sentence(10)))
.collect();
// Render default list
group.bench_with_input(
BenchmarkId::new("render", line_count),
&List::new(lines.clone()),
render,
);
// Render with an offset to the middle of the list and a selected item
group.bench_with_input(
BenchmarkId::new("render_scroll_half", line_count),
&List::new(lines.clone()).highlight_symbol(">>"),
|b, list| {
render_stateful(
b,
list,
ListState::default()
.with_offset(line_count / 2)
.with_selected(Some(line_count / 2)),
)
},
);
}
group.finish();
}
/// render the list into a common size buffer
fn render(bencher: &mut Bencher, list: &List) {
let mut buffer = Buffer::empty(Rect::new(0, 0, 200, 50));
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| list.to_owned(),
|bench_list| {
Widget::render(bench_list, buffer.area, &mut buffer);
},
BatchSize::LargeInput,
)
}
/// render the list into a common size buffer with a state
fn render_stateful(bencher: &mut Bencher, list: &List, mut state: ListState) {
let mut buffer = Buffer::empty(Rect::new(0, 0, 200, 50));
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| list.to_owned(),
|bench_list| {
StatefulWidget::render(bench_list, buffer.area, &mut buffer, &mut state);
},
BatchSize::LargeInput,
)
}
criterion_group!(benches, list);
criterion_main!(benches);

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use criterion::{
black_box, criterion_group, criterion_main, BatchSize, Bencher, BenchmarkId, Criterion,
};
use ratatui::{
buffer::Buffer,
layout::Rect,
widgets::{Paragraph, Widget, Wrap},
};
/// because the scroll offset is a u16, the maximum number of lines that can be scrolled is 65535.
/// This is a limitation of the current implementation and may be fixed by changing the type of the
/// scroll offset to a u32.
const MAX_SCROLL_OFFSET: u16 = u16::MAX;
const NO_WRAP_WIDTH: u16 = 200;
const WRAP_WIDTH: u16 = 100;
/// Benchmark for rendering a paragraph with a given number of lines. The design of this benchmark
/// allows comparison of the performance of rendering a paragraph with different numbers of lines.
/// as well as comparing with the various settings on the scroll and wrap features.
pub fn paragraph(c: &mut Criterion) {
let mut group = c.benchmark_group("paragraph");
for &line_count in [64, 2048, MAX_SCROLL_OFFSET].iter() {
let lines = random_lines(line_count);
let lines = lines.as_str();
// benchmark that measures the overhead of creating a paragraph separately from rendering
group.bench_with_input(BenchmarkId::new("new", line_count), lines, |b, lines| {
b.iter(|| Paragraph::new(black_box(lines)))
});
// render the paragraph with no scroll
group.bench_with_input(
BenchmarkId::new("render", line_count),
&Paragraph::new(lines),
|bencher, paragraph| render(bencher, paragraph, NO_WRAP_WIDTH),
);
// scroll the paragraph by half the number of lines and render
group.bench_with_input(
BenchmarkId::new("render_scroll_half", line_count),
&Paragraph::new(lines).scroll((0u16, line_count / 2)),
|bencher, paragraph| render(bencher, paragraph, NO_WRAP_WIDTH),
);
// scroll the paragraph by the full number of lines and render
group.bench_with_input(
BenchmarkId::new("render_scroll_full", line_count),
&Paragraph::new(lines).scroll((0u16, line_count)),
|bencher, paragraph| render(bencher, paragraph, NO_WRAP_WIDTH),
);
// render the paragraph wrapped to 100 characters
group.bench_with_input(
BenchmarkId::new("render_wrap", line_count),
&Paragraph::new(lines).wrap(Wrap { trim: false }),
|bencher, paragraph| render(bencher, paragraph, WRAP_WIDTH),
);
// scroll the paragraph by the full number of lines and render wrapped to 100 characters
group.bench_with_input(
BenchmarkId::new("render_wrap_scroll_full", line_count),
&Paragraph::new(lines)
.wrap(Wrap { trim: false })
.scroll((0u16, line_count)),
|bencher, paragraph| render(bencher, paragraph, WRAP_WIDTH),
);
}
group.finish();
}
/// render the paragraph into a buffer with the given width
fn render(bencher: &mut Bencher, paragraph: &Paragraph, width: u16) {
let mut buffer = Buffer::empty(Rect::new(0, 0, width, 50));
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| paragraph.to_owned(),
|bench_paragraph| {
bench_paragraph.render(buffer.area, &mut buffer);
},
BatchSize::LargeInput,
)
}
/// Create a string with the given number of lines filled with nonsense words
///
/// English language has about 5.1 average characters per word so including the space between words
/// this should emit around 200 characters per paragraph on average.
fn random_lines(count: u16) -> String {
let count = count as i64;
let sentence_count = 3;
let word_count = 11;
fakeit::words::paragraph(count, sentence_count, word_count, "\n".into())
}
criterion_group!(benches, paragraph);
criterion_main!(benches);

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use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
use rand::Rng;
use ratatui::{
buffer::Buffer,
layout::Rect,
widgets::{Sparkline, Widget},
};
/// Benchmark for rendering a sparkline.
pub fn sparkline(c: &mut Criterion) {
let mut group = c.benchmark_group("sparkline");
let mut rng = rand::thread_rng();
for data_count in [64, 256, 2048] {
let data: Vec<u64> = (0..data_count)
.map(|_| rng.gen_range(0..data_count))
.collect();
// Render a basic sparkline
group.bench_with_input(
BenchmarkId::new("render", data_count),
&Sparkline::default().data(&data),
render,
);
}
group.finish();
}
/// render the block into a buffer of the given `size`
fn render(bencher: &mut Bencher, sparkline: &Sparkline) {
let mut buffer = Buffer::empty(Rect::new(0, 0, 200, 50));
// We use `iter_batched` to clone the value in the setup function.
// See https://github.com/ratatui-org/ratatui/pull/377.
bencher.iter_batched(
|| sparkline.clone(),
|bench_sparkline| {
bench_sparkline.render(buffer.area, &mut buffer);
},
criterion::BatchSize::LargeInput,
)
}
criterion_group!(benches, sparkline);
criterion_main!(benches);

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# configuration for https://github.com/orhun/git-cliff
[changelog]
# changelog header
header = """
# Changelog
All notable changes to this project will be documented in this file.
"""
# template for the changelog body
# https://keats.github.io/tera/docs/#introduction
# note that the - before / after the % controls whether whitespace is rendered between each line.
# Getting this right so that the markdown renders with the correct number of lines between headings
# code fences and list items is pretty finicky. Note also that the 4 backticks in the commit macro
# is intentional as this escapes any backticks in the commit body.
body = """
{%- if not version %}
## [unreleased]
{% else -%}
## [{{ version }}](https://github.com/ratatui-org/ratatui/releases/tag/{{ version }}) - {{ timestamp | date(format="%Y-%m-%d") }}
{% endif -%}
{% macro commit(commit) -%}
- [{{ commit.id | truncate(length=7, end="") }}]({{ "https://github.com/ratatui-org/ratatui/commit/" ~ commit.id }})
*({{commit.scope | default(value = "uncategorized") | lower }})* {{ commit.message | upper_first }}
{%- if commit.breaking %} [**breaking**]{% endif %}
{%- if commit.body %}
````text {#- 4 backticks escape any backticks in body #}
{{commit.body | indent(prefix=" ") }}
````
{%- endif %}
{%- for footer in commit.footers %}
{%- if footer.token != "Signed-off-by" and footer.token != "Co-authored-by" %}
{{ footer.token | indent(prefix=" ") }}{{ footer.separator }}
{{ footer.value | indent(prefix=" ") }}
{%- endif %}
{%- endfor %}
{% endmacro -%}
{% for group, commits in commits | group_by(attribute="group") %}
### {{ group | striptags | trim | upper_first }}
{% for commit in commits | filter(attribute="scope") | sort(attribute="scope") %}
{{ self::commit(commit=commit) }}
{%- endfor -%}
{% for commit in commits %}
{%- if not commit.scope %}
{{ self::commit(commit=commit) }}
{%- endif -%}
{%- endfor -%}
{%- endfor %}
"""
# remove the leading and trailing whitespace from the template
trim = false
# changelog footer
footer = """
<!-- generated by git-cliff -->
"""
[git]
# parse the commits based on https://www.conventionalcommits.org
conventional_commits = true
# filter out the commits that are not conventional
filter_unconventional = true
# process each line of a commit as an individual commit
split_commits = false
# regex for preprocessing the commit messages
commit_preprocessors = [
{ pattern = '\((\w+\s)?#([0-9]+)\)', replace = "([#${2}](https://github.com/ratatui-org/ratatui/issues/${2}))" },
{ pattern = '(better safe shared layout cache)', replace = "perf(layout): ${1}" },
{ pattern = '(Clarify README.md)', replace = "docs(readme): ${1}" },
{ pattern = '(Update README.md)', replace = "docs(readme): ${1}" },
{ pattern = '(fix typos|Fix typos)', replace = "fix: ${1}" },
]
# regex for parsing and grouping commits
commit_parsers = [
{ message = "^feat", group = "<!-- 00 -->Features" },
{ message = "^[fF]ix", group = "<!-- 01 -->Bug Fixes" },
{ message = "^refactor", group = "<!-- 02 -->Refactor" },
{ message = "^doc", group = "<!-- 03 -->Documentation" },
{ message = "^perf", group = "<!-- 04 -->Performance" },
{ message = "^style", group = "<!-- 05 -->Styling" },
{ message = "^test", group = "<!-- 06 -->Testing" },
{ message = "^chore\\(release\\): prepare for", skip = true },
{ message = "^chore\\(pr\\)", skip = true },
{ message = "^chore\\(pull\\)", skip = true },
{ message = "^chore\\(deps\\)", skip = true },
{ message = "^chore\\(changelog\\)", skip = true },
{ message = "^[cC]hore", group = "<!-- 07 -->Miscellaneous Tasks" },
{ body = ".*security", group = "<!-- 08 -->Security" },
{ message = "^build", group = "<!-- 09 -->Build" },
{ message = "^ci", group = "<!-- 10 -->Continuous Integration" },
{ message = "^revert", group = "<!-- 11 -->Reverted Commits" },
# handle some old commits styles from pre 0.4
{ message = "^(Buffer|buffer|Frame|frame|Gauge|gauge|Paragraph|paragraph):", group = "<!-- 07 -->Miscellaneous Tasks" },
{ message = "^\\[", group = "<!-- 07 -->Miscellaneous Tasks" },
]
# protect breaking changes from being skipped due to matching a skipping commit_parser
protect_breaking_commits = false
# filter out the commits that are not matched by commit parsers
filter_commits = false
# glob pattern for matching git tags
tag_pattern = "v[0-9]*"
# regex for skipping tags
skip_tags = "v0.1.0-rc.1"
# regex for ignoring tags
ignore_tags = "alpha"
# sort the tags topologically
topo_order = false
# sort the commits inside sections by oldest/newest order
sort_commits = "newest"

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coverage: # https://docs.codecov.com/docs/codecovyml-reference#coverage
precision: 1 # e.g. 89.1%
round: down
range: 85..100 # https://docs.codecov.com/docs/coverage-configuration#section-range
status: # https://docs.codecov.com/docs/commit-status
project:
default:
threshold: 1% # Avoid false negatives
ignore:
- "examples"
- "benches"
comment: # https://docs.codecov.com/docs/pull-request-comments
# make the comments less noisy
require_changes: true

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# configuration for https://github.com/crate-ci/committed
# https://www.conventionalcommits.org
style = "conventional"
# disallow merge commits
merge_commit = false
# subject is not required to be capitalized
subject_capitalized = false
# subject should start with an imperative verb
imperative_subject = true
# subject should not end with a punctuation
subject_not_punctuated = true
# disable line length
line_length = 0
# disable subject length
subject_length = 0
# default allowed_types [ "chore", "docs", "feat", "fix", "perf", "refactor", "style", "test" ]
allowed_types = [
"build",
"chore",
"ci",
"docs",
"feat",
"fix",
"perf",
"refactor",
"revert",
"style",
"test",
]

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# configuration for https://github.com/EmbarkStudios/cargo-deny
[licenses]
default = "deny"
unlicensed = "deny"
copyleft = "deny"
confidence-threshold = 0.8
allow = [
"Apache-2.0",
"BSD-2-Clause",
"BSD-3-Clause",
"ISC",
"MIT",
"Unicode-DFS-2016",
"WTFPL",
]
[advisories]
unmaintained = "deny"
yanked = "deny"
[bans]
multiple-versions = "allow"
[sources]
unknown-registry = "deny"
unknown-git = "warn"
allow-registry = ["https://github.com/rust-lang/crates.io-index"]

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# Examples
This folder contains unreleased code. View the [examples for the latest release
(0.25.0)](https://github.com/ratatui-org/ratatui/tree/v0.25.0/examples) instead.
> [!WARNING]
>
> There are backwards incompatible changes in these examples, as they are designed to compile
> against the `main` branch.
>
> There are a few workaround for this problem:
>
> - View the examples as they were when the latest version was release by selecting the tag that
> matches that version. E.g. <https://github.com/ratatui-org/ratatui/tree/v0.25.0/examples>. There
> is a combo box at the top of this page which allows you to select any previous tagged version.
> - To view the code locally, checkout the tag using `git switch --detach v0.25.0`.
> - Use the latest [alpha version of Ratatui]. These are released weekly on Saturdays.
> - Compile your code against the main branch either locally by adding e.g. `path = "../ratatui"` to
> the dependency, or remotely by adding `git = "https://github.com/ratatui-org/ratatui"`
>
> For a list of unreleased breaking changes, see [BREAKING-CHANGES.md].
>
> We don't keep the CHANGELOG updated with unreleased changes, check the git commit history or run
> `git-cliff -u` against a cloned version of this repository.
## Demo2
This is the demo example from the main README and crate page. Source: [demo2](./demo2/).
```shell
cargo run --example=demo2 --features="crossterm widget-calendar"
```
![Demo2][demo2.gif]
## Demo
This is the previous demo example from the main README. It is available for each of the backends. Source:
[demo.rs](./demo/).
```shell
cargo run --example=demo --features=crossterm
cargo run --example=demo --no-default-features --features=termion
cargo run --example=demo --no-default-features --features=termwiz
```
![Demo][demo.gif]
## Hello World
This is a pretty boring example, but it contains some good documentation
on writing tui apps. Source: [hello_world.rs](./hello_world.rs).
```shell
cargo run --example=hello_world --features=crossterm
```
![Hello World][hello_world.gif]
## Barchart
Demonstrates the [`BarChart`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.BarChart.html)
widget. Source: [barchart.rs](./barchart.rs).
```shell
cargo run --example=barchart --features=crossterm
```
![Barchart][barchart.gif]
## Block
Demonstrates the [`Block`](https://docs.rs/ratatui/latest/ratatui/widgets/block/struct.Block.html)
widget. Source: [block.rs](./block.rs).
```shell
cargo run --example=block --features=crossterm
```
![Block][block.gif]
## Calendar
Demonstrates the [`Calendar`](https://docs.rs/ratatui/latest/ratatui/widgets/calendar/index.html)
widget. Source: [calendar.rs](./calendar.rs).
```shell
cargo run --example=calendar --features="crossterm widget-calendar"
```
![Calendar][calendar.gif]
## Canvas
Demonstrates the [`Canvas`](https://docs.rs/ratatui/latest/ratatui/widgets/canvas/index.html) widget
and related shapes in the
[`canvas`](https://docs.rs/ratatui/latest/ratatui/widgets/canvas/index.html) module. Source:
[canvas.rs](./canvas.rs).
```shell
cargo run --example=canvas --features=crossterm
```
![Canvas][canvas.gif]
## Chart
Demonstrates the [`Chart`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Chart.html) widget.
Source: [chart.rs](./chart.rs).
```shell
cargo run --example=chart --features=crossterm
```
![Chart][chart.gif]
## Colors
Demonstrates the available [`Color`](https://docs.rs/ratatui/latest/ratatui/style/enum.Color.html)
options. These can be used in any style field. Source: [colors.rs](./colors.rs).
```shell
cargo run --example=colors --features=crossterm
```
![Colors][colors.gif]
## Colors (RGB)
Demonstrates the available RGB
[`Color`](https://docs.rs/ratatui/latest/ratatui/style/enum.Color.html) options. These can be used
in any style field. Source: [colors_rgb.rs](./colors_rgb.rs). Uses a half block technique to render
two square-ish pixels in the space of a single rectangular terminal cell.
```shell
cargo run --example=colors_rgb --features=crossterm
```
Note: VHs renders full screen animations poorly, so this is a screen capture rather than the output
of the VHS tape.
<https://github.com/ratatui-org/ratatui/assets/381361/485e775a-e0b5-4133-899b-1e8aeb56e774>
## Custom Widget
Demonstrates how to implement the
[`Widget`](https://docs.rs/ratatui/latest/ratatui/widgets/trait.Widget.html) trait. Also shows mouse
interaction. Source: [custom_widget.rs](./custom_widget.rs).
```shell
cargo run --example=custom_widget --features=crossterm
```
![Custom Widget][custom_widget.gif]
## Gauge
Demonstrates the [`Gauge`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Gauge.html) widget.
Source: [gauge.rs](./gauge.rs).
```shell
cargo run --example=gauge --features=crossterm
```
![Gauge][gauge.gif]
## Inline
Demonstrates how to use the
[`Inline`](https://docs.rs/ratatui/latest/ratatui/terminal/enum.Viewport.html#variant.Inline)
Viewport mode for ratatui apps. Source: [inline.rs](./inline.rs).
```shell
cargo run --example=inline --features=crossterm
```
![Inline][inline.gif]
## Layout
Demonstrates the [`Layout`](https://docs.rs/ratatui/latest/ratatui/layout/struct.Layout.html) and
interaction between each constraint. Source: [layout.rs](./layout.rs).
```shell
cargo run --example=layout --features=crossterm
```
![Layout][layout.gif]
## List
Demonstrates the [`List`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.List.html) widget.
Source: [list.rs](./list.rs).
```shell
cargo run --example=list --features=crossterm
```
![List][list.gif]
## Modifiers
Demonstrates the style
[`Modifiers`](https://docs.rs/ratatui/latest/ratatui/style/struct.Modifier.html). Source:
[modifiers.rs](./modifiers.rs).
```shell
cargo run --example=modifiers --features=crossterm
```
![Modifiers][modifiers.gif]
## Panic
Demonstrates how to handle panics by ensuring that panic messages are written correctly to the
screen. Source: [panic.rs](./panic.rs).
```shell
cargo run --example=panic --features=crossterm
```
![Panic][panic.gif]
## Paragraph
Demonstrates the [`Paragraph`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Paragraph.html)
widget. Source: [paragraph.rs](./paragraph.rs)
```shell
cargo run --example=paragraph --features=crossterm
```
![Paragraph][paragraph.gif]
## Popup
Demonstrates how to render a widget over the top of previously rendered widgets using the
[`Clear`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Clear.html) widget. Source:
[popup.rs](./popup.rs).
>
```shell
cargo run --example=popup --features=crossterm
```
![Popup][popup.gif]
## Ratatui-logo
A fun example of using half blocks to render graphics Source:
[ratatui-logo.rs](./ratatui-logo.rs).
>
```shell
cargo run --example=ratatui-logo --features=crossterm
```
![Ratatui Logo][ratatui-logo.gif]
## Scrollbar
Demonstrates the [`Scrollbar`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Scrollbar.html)
widget. Source: [scrollbar.rs](./scrollbar.rs).
```shell
cargo run --example=scrollbar --features=crossterm
```
![Scrollbar][scrollbar.gif]
## Sparkline
Demonstrates the [`Sparkline`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Sparkline.html)
widget. Source: [sparkline.rs](./sparkline.rs).
```shell
cargo run --example=sparkline --features=crossterm
```
![Sparkline][sparkline.gif]
## Table
Demonstrates the [`Table`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Table.html) widget.
Source: [table.rs](./table.rs).
```shell
cargo run --example=table --features=crossterm
```
![Table][table.gif]
## Tabs
Demonstrates the [`Tabs`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Tabs.html) widget.
Source: [tabs.rs](./tabs.rs).
```shell
cargo run --example=tabs --features=crossterm
```
![Tabs][tabs.gif]
## User Input
Demonstrates one approach to accepting user input. Source [user_input.rs](./user_input.rs).
> [!NOTE]
> Consider using [`tui-textarea`](https://crates.io/crates/tui-textarea) or
> [`tui-input`](https://crates.io/crates/tui-input) crates for more functional text entry UIs.
```shell
cargo run --example=user_input --features=crossterm
```
![User Input][user_input.gif]
## How to update these examples
These gifs were created using [VHS](https://github.com/charmbracelet/vhs). Each example has a
corresponding `.tape` file that holds instructions for how to generate the images. Note that the
images themselves are stored in a separate `images` git branch to avoid bloating the main
repository.
<!--
Links to images to make them easier to update in bulk. Use the following script to update and upload
the examples to the images branch. (Requires push access to the branch).
```shell
examples/generate.bash
```
-->
[barchart.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/barchart.gif?raw=true
[block.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/block.gif?raw=true
[calendar.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/calendar.gif?raw=true
[canvas.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/canvas.gif?raw=true
[chart.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/chart.gif?raw=true
[colors.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/colors.gif?raw=true
[custom_widget.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/custom_widget.gif?raw=true
[demo.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/demo.gif?raw=true
[demo2.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/demo2.gif?raw=true
[gauge.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/gauge.gif?raw=true
[hello_world.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/hello_world.gif?raw=true
[inline.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/inline.gif?raw=true
[layout.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/layout.gif?raw=true
[list.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/list.gif?raw=true
[modifiers.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/modifiers.gif?raw=true
[panic.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/panic.gif?raw=true
[paragraph.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/paragraph.gif?raw=true
[popup.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/popup.gif?raw=true
[ratatui-logo.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/ratatui-logo.gif?raw=true
[scrollbar.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/scrollbar.gif?raw=true
[sparkline.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/sparkline.gif?raw=true
[table.gif]: https://vhs.charm.sh/vhs-6njXBytDf0rwPufUtmSSpI.gif
[tabs.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/tabs.gif?raw=true
[user_input.gif]: https://github.com/ratatui-org/ratatui/blob/images/examples/user_input.gif?raw=true
[alpha version of Ratatui]: https://crates.io/crates/ratatui/versions
[BREAKING-CHANGES.md]: https://github.com/ratatui-org/ratatui/blob/main/BREAKING-CHANGES.md

View File

@@ -1,21 +1,30 @@
#[allow(dead_code)]
mod util;
use crate::util::event::{Event, Events};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout},
style::{Color, Modifier, Style},
widgets::{BarChart, Block, Borders},
Terminal,
use std::{
error::Error,
io,
time::{Duration, Instant},
};
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::*};
struct Company<'a> {
revenue: [u64; 4],
label: &'a str,
bar_style: Style,
}
struct App<'a> {
data: Vec<(&'a str, u64)>,
months: [&'a str; 4],
companies: [Company<'a>; 3],
}
const TOTAL_REVENUE: &str = "Total Revenue";
impl<'a> App<'a> {
fn new() -> App<'a> {
App {
@@ -45,88 +54,224 @@ impl<'a> App<'a> {
("B23", 3),
("B24", 5),
],
companies: [
Company {
label: "Comp.A",
revenue: [9500, 12500, 5300, 8500],
bar_style: Style::default().fg(Color::Green),
},
Company {
label: "Comp.B",
revenue: [1500, 2500, 3000, 500],
bar_style: Style::default().fg(Color::Yellow),
},
Company {
label: "Comp.C",
revenue: [10500, 10600, 9000, 4200],
bar_style: Style::default().fg(Color::White),
},
],
months: ["Mars", "Apr", "May", "Jun"],
}
}
fn update(&mut self) {
fn on_tick(&mut self) {
let value = self.data.pop().unwrap();
self.data.insert(0, value);
}
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
// Setup event handlers
let events = Events::new();
// create app and run it
let tick_rate = Duration::from_millis(250);
let app = App::new();
let res = run_app(&mut terminal, app, tick_rate);
// App
let mut app = App::new();
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
loop {
terminal.draw(|f| {
let chunks = Layout::default()
.direction(Direction::Vertical)
.margin(2)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(f.size());
let barchart = BarChart::default()
.block(Block::default().title("Data1").borders(Borders::ALL))
.data(&app.data)
.bar_width(9)
.bar_style(Style::default().fg(Color::Yellow))
.value_style(Style::default().fg(Color::Black).bg(Color::Yellow));
f.render_widget(barchart, chunks[0]);
let chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(chunks[1]);
let barchart = BarChart::default()
.block(Block::default().title("Data2").borders(Borders::ALL))
.data(&app.data)
.bar_width(5)
.bar_gap(3)
.bar_style(Style::default().fg(Color::Green))
.value_style(
Style::default()
.bg(Color::Green)
.add_modifier(Modifier::BOLD),
);
f.render_widget(barchart, chunks[0]);
let barchart = BarChart::default()
.block(Block::default().title("Data3").borders(Borders::ALL))
.data(&app.data)
.bar_style(Style::default().fg(Color::Red))
.bar_width(7)
.bar_gap(0)
.value_style(Style::default().bg(Color::Red))
.label_style(
Style::default()
.fg(Color::Cyan)
.add_modifier(Modifier::ITALIC),
);
f.render_widget(barchart, chunks[1]);
})?;
match events.next()? {
Event::Input(input) => {
if input == Key::Char('q') {
break;
}
}
Event::Tick => {
app.update();
}
}
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
mut app: App,
tick_rate: Duration,
) -> io::Result<()> {
let mut last_tick = Instant::now();
loop {
terminal.draw(|f| ui(f, &app))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if crossterm::event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(());
}
}
}
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
}
}
fn ui(frame: &mut Frame, app: &App) {
let vertical = Layout::vertical([Constraint::Ratio(1, 3), Constraint::Ratio(2, 3)]);
let horizontal = Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)]);
let [top, bottom] = frame.size().split(&vertical);
let [left, right] = bottom.split(&horizontal);
let barchart = BarChart::default()
.block(Block::default().title("Data1").borders(Borders::ALL))
.data(&app.data)
.bar_width(9)
.bar_style(Style::default().fg(Color::Yellow))
.value_style(Style::default().fg(Color::Black).bg(Color::Yellow));
frame.render_widget(barchart, top);
draw_bar_with_group_labels(frame, app, left);
draw_horizontal_bars(frame, app, right);
}
fn create_groups<'a>(app: &'a App, combine_values_and_labels: bool) -> Vec<BarGroup<'a>> {
app.months
.iter()
.enumerate()
.map(|(i, &month)| {
let bars: Vec<Bar> = app
.companies
.iter()
.map(|c| {
let mut bar = Bar::default()
.value(c.revenue[i])
.style(c.bar_style)
.value_style(
Style::default()
.bg(c.bar_style.fg.unwrap())
.fg(Color::Black),
);
if combine_values_and_labels {
bar = bar.text_value(format!(
"{} ({:.1} M)",
c.label,
(c.revenue[i] as f64) / 1000.
));
} else {
bar = bar
.text_value(format!("{:.1}", (c.revenue[i] as f64) / 1000.))
.label(c.label.into());
}
bar
})
.collect();
BarGroup::default()
.label(Line::from(month).alignment(Alignment::Center))
.bars(&bars)
})
.collect()
}
fn draw_bar_with_group_labels(f: &mut Frame, app: &App, area: Rect) {
let groups = create_groups(app, false);
let mut barchart = BarChart::default()
.block(Block::default().title("Data1").borders(Borders::ALL))
.bar_width(7)
.group_gap(3);
for group in groups {
barchart = barchart.data(group)
}
f.render_widget(barchart, area);
const LEGEND_HEIGHT: u16 = 6;
if area.height >= LEGEND_HEIGHT && area.width >= TOTAL_REVENUE.len() as u16 + 2 {
let legend_width = TOTAL_REVENUE.len() as u16 + 2;
let legend_area = Rect {
height: LEGEND_HEIGHT,
width: legend_width,
y: area.y,
x: area.right() - legend_width,
};
draw_legend(f, legend_area);
}
}
fn draw_horizontal_bars(f: &mut Frame, app: &App, area: Rect) {
let groups = create_groups(app, true);
let mut barchart = BarChart::default()
.block(Block::default().title("Data1").borders(Borders::ALL))
.bar_width(1)
.group_gap(1)
.bar_gap(0)
.direction(Direction::Horizontal);
for group in groups {
barchart = barchart.data(group)
}
f.render_widget(barchart, area);
const LEGEND_HEIGHT: u16 = 6;
if area.height >= LEGEND_HEIGHT && area.width >= TOTAL_REVENUE.len() as u16 + 2 {
let legend_width = TOTAL_REVENUE.len() as u16 + 2;
let legend_area = Rect {
height: LEGEND_HEIGHT,
width: legend_width,
y: area.y,
x: area.right() - legend_width,
};
draw_legend(f, legend_area);
}
}
fn draw_legend(f: &mut Frame, area: Rect) {
let text = vec![
Line::from(Span::styled(
TOTAL_REVENUE,
Style::default()
.add_modifier(Modifier::BOLD)
.fg(Color::White),
)),
Line::from(Span::styled(
"- Company A",
Style::default().fg(Color::Green),
)),
Line::from(Span::styled(
"- Company B",
Style::default().fg(Color::Yellow),
)),
Line::from(vec![Span::styled(
"- Company C",
Style::default().fg(Color::White),
)]),
];
let block = Block::default()
.borders(Borders::ALL)
.style(Style::default().fg(Color::White));
let paragraph = Paragraph::new(text).block(block);
f.render_widget(paragraph, area);
}

12
examples/barchart.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/barchart.tape`
Output "target/barchart.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 800
Hide
Type "cargo run --example=barchart"
Enter
Sleep 1s
Show
Sleep 5s

View File

@@ -1,86 +1,246 @@
#[allow(dead_code)]
mod util;
use crate::util::event::{Event, Events};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout},
style::{Color, Modifier, Style},
text::Span,
widgets::{Block, BorderType, Borders},
Terminal,
use std::{
error::Error,
io::{stdout, Stdout},
ops::ControlFlow,
time::Duration,
};
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
use crossterm::{
event::{self, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use itertools::Itertools;
use ratatui::{
prelude::*,
widgets::{
block::{Position, Title},
Block, BorderType, Borders, Padding, Paragraph, Wrap,
},
};
// Setup event handlers
let events = Events::new();
// These type aliases are used to make the code more readable by reducing repetition of the generic
// types. They are not necessary for the functionality of the code.
type Terminal = ratatui::Terminal<CrosstermBackend<Stdout>>;
type Result<T> = std::result::Result<T, Box<dyn Error>>;
loop {
terminal.draw(|f| {
// Wrapping block for a group
// Just draw the block and the group on the same area and build the group
// with at least a margin of 1
let size = f.size();
let block = Block::default()
.borders(Borders::ALL)
.title("Main block with round corners")
.border_type(BorderType::Rounded);
f.render_widget(block, size);
let chunks = Layout::default()
.direction(Direction::Vertical)
.margin(4)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(f.size());
fn main() -> Result<()> {
let mut terminal = setup_terminal()?;
let result = run(&mut terminal);
restore_terminal(terminal)?;
let top_chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(chunks[0]);
let block = Block::default()
.title(vec![
Span::styled("With", Style::default().fg(Color::Yellow)),
Span::from(" background"),
])
.style(Style::default().bg(Color::Green));
f.render_widget(block, top_chunks[0]);
let block = Block::default().title(Span::styled(
"Styled title",
Style::default()
.fg(Color::White)
.bg(Color::Red)
.add_modifier(Modifier::BOLD),
));
f.render_widget(block, top_chunks[1]);
let bottom_chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(chunks[1]);
let block = Block::default().title("With borders").borders(Borders::ALL);
f.render_widget(block, bottom_chunks[0]);
let block = Block::default()
.title("With styled borders and doubled borders")
.border_style(Style::default().fg(Color::Cyan))
.borders(Borders::LEFT | Borders::RIGHT)
.border_type(BorderType::Double);
f.render_widget(block, bottom_chunks[1]);
})?;
if let Event::Input(key) = events.next()? {
if key == Key::Char('q') {
break;
}
}
if let Err(err) = result {
eprintln!("{err:?}");
}
Ok(())
}
fn setup_terminal() -> Result<Terminal> {
enable_raw_mode()?;
let mut stdout = stdout();
execute!(stdout, EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout);
let terminal = Terminal::new(backend)?;
Ok(terminal)
}
fn restore_terminal(mut terminal: Terminal) -> Result<()> {
disable_raw_mode()?;
execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
Ok(())
}
fn run(terminal: &mut Terminal) -> Result<()> {
loop {
terminal.draw(ui)?;
if handle_events()?.is_break() {
return Ok(());
}
}
}
fn handle_events() -> Result<ControlFlow<()>> {
if event::poll(Duration::from_millis(100))? {
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(ControlFlow::Break(()));
}
}
}
Ok(ControlFlow::Continue(()))
}
fn ui(frame: &mut Frame) {
let (title_area, layout) = calculate_layout(frame.size());
render_title(frame, title_area);
let paragraph = placeholder_paragraph();
render_borders(&paragraph, Borders::ALL, frame, layout[0][0]);
render_borders(&paragraph, Borders::NONE, frame, layout[0][1]);
render_borders(&paragraph, Borders::LEFT, frame, layout[1][0]);
render_borders(&paragraph, Borders::RIGHT, frame, layout[1][1]);
render_borders(&paragraph, Borders::TOP, frame, layout[2][0]);
render_borders(&paragraph, Borders::BOTTOM, frame, layout[2][1]);
render_border_type(&paragraph, BorderType::Plain, frame, layout[3][0]);
render_border_type(&paragraph, BorderType::Rounded, frame, layout[3][1]);
render_border_type(&paragraph, BorderType::Double, frame, layout[4][0]);
render_border_type(&paragraph, BorderType::Thick, frame, layout[4][1]);
render_styled_block(&paragraph, frame, layout[5][0]);
render_styled_borders(&paragraph, frame, layout[5][1]);
render_styled_title(&paragraph, frame, layout[6][0]);
render_styled_title_content(&paragraph, frame, layout[6][1]);
render_multiple_titles(&paragraph, frame, layout[7][0]);
render_multiple_title_positions(&paragraph, frame, layout[7][1]);
render_padding(&paragraph, frame, layout[8][0]);
render_nested_blocks(&paragraph, frame, layout[8][1]);
}
/// Calculate the layout of the UI elements.
///
/// Returns a tuple of the title area and the main areas.
fn calculate_layout(area: Rect) -> (Rect, Vec<Vec<Rect>>) {
let main_layout = Layout::vertical([Constraint::Length(1), Constraint::Min(0)]);
let block_layout = &Layout::vertical([Constraint::Max(4); 9]);
let [title_area, main_area] = area.split(&main_layout);
let main_areas = block_layout
.split(main_area)
.iter()
.map(|&area| {
Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)])
.split(area)
.to_vec()
})
.collect_vec();
(title_area, main_areas)
}
fn render_title(frame: &mut Frame, area: Rect) {
frame.render_widget(
Paragraph::new("Block example. Press q to quit")
.dark_gray()
.alignment(Alignment::Center),
area,
);
}
fn placeholder_paragraph() -> Paragraph<'static> {
let text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";
Paragraph::new(text.dark_gray()).wrap(Wrap { trim: true })
}
fn render_borders(paragraph: &Paragraph, border: Borders, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(border)
.title(format!("Borders::{border:#?}", border = border));
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_border_type(
paragraph: &Paragraph,
border_type: BorderType,
frame: &mut Frame,
area: Rect,
) {
let block = Block::new()
.borders(Borders::ALL)
.border_type(border_type)
.title(format!("BorderType::{border_type:#?}"));
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_styled_borders(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.border_style(Style::new().blue().on_white().bold().italic())
.title("Styled borders");
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_styled_block(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.style(Style::new().blue().on_white().bold().italic())
.title("Styled block");
frame.render_widget(paragraph.clone().block(block), area);
}
// Note: this currently renders incorrectly, see https://github.com/ratatui-org/ratatui/issues/349
fn render_styled_title(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.title("Styled title")
.title_style(Style::new().blue().on_white().bold().italic());
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_styled_title_content(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let title = Line::from(vec![
"Styled ".blue().on_white().bold().italic(),
"title content".red().on_white().bold().italic(),
]);
let block = Block::new().borders(Borders::ALL).title(title);
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_multiple_titles(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.title("Multiple".blue().on_white().bold().italic())
.title("Titles".red().on_white().bold().italic());
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_multiple_title_positions(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.title(
Title::from("top left")
.position(Position::Top)
.alignment(Alignment::Left),
)
.title(
Title::from("top center")
.position(Position::Top)
.alignment(Alignment::Center),
)
.title(
Title::from("top right")
.position(Position::Top)
.alignment(Alignment::Right),
)
.title(
Title::from("bottom left")
.position(Position::Bottom)
.alignment(Alignment::Left),
)
.title(
Title::from("bottom center")
.position(Position::Bottom)
.alignment(Alignment::Center),
)
.title(
Title::from("bottom right")
.position(Position::Bottom)
.alignment(Alignment::Right),
);
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_padding(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let block = Block::new()
.borders(Borders::ALL)
.title("Padding")
.padding(Padding::new(5, 10, 1, 2));
frame.render_widget(paragraph.clone().block(block), area);
}
fn render_nested_blocks(paragraph: &Paragraph, frame: &mut Frame, area: Rect) {
let outer_block = Block::new().borders(Borders::ALL).title("Outer block");
let inner_block = Block::new().borders(Borders::ALL).title("Inner block");
let inner = outer_block.inner(area);
frame.render_widget(outer_block, area);
frame.render_widget(paragraph.clone().block(inner_block), inner);
}

12
examples/block.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/block.tape`
Output "target/block.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1200
Hide
Type "cargo run --example=block"
Enter
Sleep 2s
Show
Sleep 2s

247
examples/calendar.rs Normal file
View File

@@ -0,0 +1,247 @@
use std::{error::Error, io};
use crossterm::{
event::{self, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::calendar::*};
use time::{Date, Month, OffsetDateTime};
fn main() -> Result<(), Box<dyn Error>> {
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
loop {
let _ = terminal.draw(draw);
if let Event::Key(key) = event::read()? {
#[allow(clippy::single_match)]
match key.code {
KeyCode::Char(_) => {
break;
}
_ => {}
};
}
}
disable_raw_mode()?;
execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
terminal.show_cursor()?;
Ok(())
}
fn draw(f: &mut Frame) {
let app_area = f.size();
let calarea = Rect {
x: app_area.x + 1,
y: app_area.y + 1,
height: app_area.height - 1,
width: app_area.width - 1,
};
let mut start = OffsetDateTime::now_local()
.unwrap()
.date()
.replace_month(Month::January)
.unwrap()
.replace_day(1)
.unwrap();
let list = make_dates(start.year());
let rows = Layout::vertical([Constraint::Ratio(1, 3); 3]).split(calarea);
let cols = rows.iter().flat_map(|row| {
Layout::horizontal([Constraint::Ratio(1, 4); 4])
.split(*row)
.to_vec()
});
for col in cols {
let cal = cals::get_cal(start.month(), start.year(), &list);
f.render_widget(cal, col);
start = start.replace_month(start.month().next()).unwrap();
}
}
fn make_dates(current_year: i32) -> CalendarEventStore {
let mut list = CalendarEventStore::today(
Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Blue),
);
// Holidays
let holiday_style = Style::default()
.fg(Color::Red)
.add_modifier(Modifier::UNDERLINED);
// new year's
list.add(
Date::from_calendar_date(current_year, Month::January, 1).unwrap(),
holiday_style,
);
// next new_year's for December "show surrounding"
list.add(
Date::from_calendar_date(current_year + 1, Month::January, 1).unwrap(),
holiday_style,
);
// groundhog day
list.add(
Date::from_calendar_date(current_year, Month::February, 2).unwrap(),
holiday_style,
);
// april fool's
list.add(
Date::from_calendar_date(current_year, Month::April, 1).unwrap(),
holiday_style,
);
// earth day
list.add(
Date::from_calendar_date(current_year, Month::April, 22).unwrap(),
holiday_style,
);
// star wars day
list.add(
Date::from_calendar_date(current_year, Month::May, 4).unwrap(),
holiday_style,
);
// festivus
list.add(
Date::from_calendar_date(current_year, Month::December, 23).unwrap(),
holiday_style,
);
// new year's eve
list.add(
Date::from_calendar_date(current_year, Month::December, 31).unwrap(),
holiday_style,
);
// seasons
let season_style = Style::default()
.fg(Color::White)
.bg(Color::Yellow)
.add_modifier(Modifier::UNDERLINED);
// spring equinox
list.add(
Date::from_calendar_date(current_year, Month::March, 22).unwrap(),
season_style,
);
// summer solstice
list.add(
Date::from_calendar_date(current_year, Month::June, 21).unwrap(),
season_style,
);
// fall equinox
list.add(
Date::from_calendar_date(current_year, Month::September, 22).unwrap(),
season_style,
);
list.add(
Date::from_calendar_date(current_year, Month::December, 21).unwrap(),
season_style,
);
list
}
mod cals {
use super::*;
pub(super) fn get_cal<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
use Month::*;
match m {
May => example1(m, y, es),
June => example2(m, y, es),
July => example3(m, y, es),
December => example3(m, y, es),
February => example4(m, y, es),
November => example5(m, y, es),
_ => default(m, y, es),
}
}
fn default<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_month_header(Style::default())
.default_style(default_style)
}
fn example1<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_surrounding(default_style)
.default_style(default_style)
.show_month_header(Style::default())
}
fn example2<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let header_style = Style::default()
.add_modifier(Modifier::BOLD)
.add_modifier(Modifier::DIM)
.fg(Color::LightYellow);
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_weekdays_header(header_style)
.default_style(default_style)
.show_month_header(Style::default())
}
fn example3<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let header_style = Style::default()
.add_modifier(Modifier::BOLD)
.fg(Color::Green);
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_surrounding(Style::default().add_modifier(Modifier::DIM))
.show_weekdays_header(header_style)
.default_style(default_style)
.show_month_header(Style::default())
}
fn example4<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let header_style = Style::default()
.add_modifier(Modifier::BOLD)
.fg(Color::Green);
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_weekdays_header(header_style)
.default_style(default_style)
}
fn example5<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> {
let header_style = Style::default()
.add_modifier(Modifier::BOLD)
.fg(Color::Green);
let default_style = Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es)
.show_month_header(header_style)
.default_style(default_style)
}
}

12
examples/calendar.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/calendar.tape`
Output "target/calendar.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 800
Hide
Type "cargo run --example=calendar --features=crossterm,widget-calendar"
Enter
Sleep 3s
Show
Sleep 5s

View File

@@ -1,29 +1,31 @@
#[allow(dead_code)]
mod util;
use crate::util::event::{Config, Event, Events};
use std::{error::Error, io, time::Duration};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout, Rect},
style::Color,
widgets::{
canvas::{Canvas, Map, MapResolution, Rectangle},
Block, Borders,
},
Terminal,
use std::{
io::{self, stdout, Stdout},
time::{Duration, Instant},
};
use crossterm::{
event::{self, Event, KeyCode},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{
prelude::*,
widgets::{canvas::*, *},
};
fn main() -> io::Result<()> {
App::run()
}
struct App {
x: f64,
y: f64,
ball: Rectangle,
ball: Circle,
playground: Rect,
vx: f64,
vy: f64,
dir_x: bool,
dir_y: bool,
tick_count: u64,
marker: Marker,
}
impl App {
@@ -31,118 +33,162 @@ impl App {
App {
x: 0.0,
y: 0.0,
ball: Rectangle {
x: 10.0,
y: 30.0,
width: 10.0,
height: 10.0,
ball: Circle {
x: 20.0,
y: 40.0,
radius: 10.0,
color: Color::Yellow,
},
playground: Rect::new(10, 10, 100, 100),
playground: Rect::new(10, 10, 200, 100),
vx: 1.0,
vy: 1.0,
dir_x: true,
dir_y: true,
tick_count: 0,
marker: Marker::Dot,
}
}
fn update(&mut self) {
if self.ball.x < self.playground.left() as f64
|| self.ball.x + self.ball.width > self.playground.right() as f64
{
self.dir_x = !self.dir_x;
}
if self.ball.y < self.playground.top() as f64
|| self.ball.y + self.ball.height > self.playground.bottom() as f64
{
self.dir_y = !self.dir_y;
}
if self.dir_x {
self.ball.x += self.vx;
} else {
self.ball.x -= self.vx;
}
if self.dir_y {
self.ball.y += self.vy;
} else {
self.ball.y -= self.vy
}
}
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
// Setup event handlers
let config = Config {
tick_rate: Duration::from_millis(250),
..Default::default()
};
let events = Events::with_config(config);
// App
let mut app = App::new();
loop {
terminal.draw(|f| {
let chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(f.size());
let canvas = Canvas::default()
.block(Block::default().borders(Borders::ALL).title("World"))
.paint(|ctx| {
ctx.draw(&Map {
color: Color::White,
resolution: MapResolution::High,
});
ctx.print(app.x, -app.y, "You are here", Color::Yellow);
})
.x_bounds([-180.0, 180.0])
.y_bounds([-90.0, 90.0]);
f.render_widget(canvas, chunks[0]);
let canvas = Canvas::default()
.block(Block::default().borders(Borders::ALL).title("Pong"))
.paint(|ctx| {
ctx.draw(&app.ball);
})
.x_bounds([10.0, 110.0])
.y_bounds([10.0, 110.0]);
f.render_widget(canvas, chunks[1]);
})?;
match events.next()? {
Event::Input(input) => match input {
Key::Char('q') => {
break;
}
Key::Down => {
app.y += 1.0;
}
Key::Up => {
app.y -= 1.0;
}
Key::Right => {
app.x += 1.0;
}
Key::Left => {
app.x -= 1.0;
pub fn run() -> io::Result<()> {
let mut terminal = init_terminal()?;
let mut app = App::new();
let mut last_tick = Instant::now();
let tick_rate = Duration::from_millis(16);
loop {
let _ = terminal.draw(|frame| app.ui(frame));
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
match key.code {
KeyCode::Char('q') => break,
KeyCode::Down | KeyCode::Char('j') => app.y += 1.0,
KeyCode::Up | KeyCode::Char('k') => app.y -= 1.0,
KeyCode::Right | KeyCode::Char('l') => app.x += 1.0,
KeyCode::Left | KeyCode::Char('h') => app.x -= 1.0,
_ => {}
}
}
}
_ => {}
},
Event::Tick => {
app.update();
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
}
restore_terminal()
}
fn on_tick(&mut self) {
self.tick_count += 1;
// only change marker every 180 ticks (3s) to avoid stroboscopic effect
if (self.tick_count % 180) == 0 {
self.marker = match self.marker {
Marker::Dot => Marker::Braille,
Marker::Braille => Marker::Block,
Marker::Block => Marker::HalfBlock,
Marker::HalfBlock => Marker::Bar,
Marker::Bar => Marker::Dot,
};
}
// bounce the ball by flipping the velocity vector
let ball = &self.ball;
let playground = self.playground;
if ball.x - ball.radius < playground.left() as f64
|| ball.x + ball.radius > playground.right() as f64
{
self.vx = -self.vx;
}
if ball.y - ball.radius < playground.top() as f64
|| ball.y + ball.radius > playground.bottom() as f64
{
self.vy = -self.vy;
}
self.ball.x += self.vx;
self.ball.y += self.vy;
}
fn ui(&self, frame: &mut Frame) {
let horizontal =
Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)]);
let vertical = Layout::vertical([Constraint::Percentage(50), Constraint::Percentage(50)]);
let [map, right] = frame.size().split(&horizontal);
let [pong, boxes] = right.split(&vertical);
frame.render_widget(self.map_canvas(), map);
frame.render_widget(self.pong_canvas(), pong);
frame.render_widget(self.boxes_canvas(boxes), boxes);
}
fn map_canvas(&self) -> impl Widget + '_ {
Canvas::default()
.block(Block::default().borders(Borders::ALL).title("World"))
.marker(self.marker)
.paint(|ctx| {
ctx.draw(&Map {
color: Color::Green,
resolution: MapResolution::High,
});
ctx.print(self.x, -self.y, "You are here".yellow());
})
.x_bounds([-180.0, 180.0])
.y_bounds([-90.0, 90.0])
}
fn pong_canvas(&self) -> impl Widget + '_ {
Canvas::default()
.block(Block::default().borders(Borders::ALL).title("Pong"))
.marker(self.marker)
.paint(|ctx| {
ctx.draw(&self.ball);
})
.x_bounds([10.0, 210.0])
.y_bounds([10.0, 110.0])
}
fn boxes_canvas(&self, area: Rect) -> impl Widget {
let (left, right, bottom, top) =
(0.0, area.width as f64, 0.0, area.height as f64 * 2.0 - 4.0);
Canvas::default()
.block(Block::default().borders(Borders::ALL).title("Rects"))
.marker(self.marker)
.x_bounds([left, right])
.y_bounds([bottom, top])
.paint(|ctx| {
for i in 0..=11 {
ctx.draw(&Rectangle {
x: (i * i + 3 * i) as f64 / 2.0 + 2.0,
y: 2.0,
width: i as f64,
height: i as f64,
color: Color::Red,
});
ctx.draw(&Rectangle {
x: (i * i + 3 * i) as f64 / 2.0 + 2.0,
y: 21.0,
width: i as f64,
height: i as f64,
color: Color::Blue,
});
}
for i in 0..100 {
if i % 10 != 0 {
ctx.print(i as f64 + 1.0, 0.0, format!("{i}", i = i % 10));
}
if i % 2 == 0 && i % 10 != 0 {
ctx.print(0.0, i as f64, format!("{i}", i = i % 10));
}
}
})
}
}
fn init_terminal() -> io::Result<Terminal<CrosstermBackend<Stdout>>> {
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
Terminal::new(CrosstermBackend::new(stdout()))
}
fn restore_terminal() -> io::Result<()> {
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}

13
examples/canvas.tape Normal file
View File

@@ -0,0 +1,13 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/canvas.tape`
Output "target/canvas.gif"
Set Theme "Aardvark Blue"
Set FontSize 12
Set Width 1200
Set Height 800
Hide
Type "cargo run --example=canvas --features=crossterm"
Enter
Sleep 2s
Show
Sleep 30s

View File

@@ -1,32 +1,46 @@
#[allow(dead_code)]
mod util;
use crate::util::{
event::{Event, Events},
SinSignal,
};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout},
style::{Color, Modifier, Style},
symbols,
text::Span,
widgets::{Axis, Block, Borders, Chart, Dataset, GraphType},
Terminal,
use std::{
error::Error,
io,
time::{Duration, Instant},
};
const DATA: [(f64, f64); 5] = [(0.0, 0.0), (1.0, 1.0), (2.0, 2.0), (3.0, 3.0), (4.0, 4.0)];
const DATA2: [(f64, f64); 7] = [
(0.0, 0.0),
(10.0, 1.0),
(20.0, 0.5),
(30.0, 1.5),
(40.0, 1.0),
(50.0, 2.5),
(60.0, 3.0),
];
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{
prelude::*,
widgets::{block::Title, *},
};
#[derive(Clone)]
pub struct SinSignal {
x: f64,
interval: f64,
period: f64,
scale: f64,
}
impl SinSignal {
pub fn new(interval: f64, period: f64, scale: f64) -> SinSignal {
SinSignal {
x: 0.0,
interval,
period,
scale,
}
}
}
impl Iterator for SinSignal {
type Item = (f64, f64);
fn next(&mut self) -> Option<Self::Item> {
let point = (self.x, (self.x * 1.0 / self.period).sin() * self.scale);
self.x += self.interval;
Some(point)
}
}
struct App {
signal1: SinSignal,
@@ -51,7 +65,7 @@ impl App {
}
}
fn update(&mut self) {
fn on_tick(&mut self) {
for _ in 0..5 {
self.data1.remove(0);
}
@@ -66,181 +80,274 @@ impl App {
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let events = Events::new();
// create app and run it
let tick_rate = Duration::from_millis(250);
let app = App::new();
let res = run_app(&mut terminal, app, tick_rate);
// App
let mut app = App::new();
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
loop {
terminal.draw(|f| {
let size = f.size();
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints(
[
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
]
.as_ref(),
)
.split(size);
let x_labels = vec![
Span::styled(
format!("{}", app.window[0]),
Style::default().add_modifier(Modifier::BOLD),
),
Span::raw(format!("{}", (app.window[0] + app.window[1]) / 2.0)),
Span::styled(
format!("{}", app.window[1]),
Style::default().add_modifier(Modifier::BOLD),
),
];
let datasets = vec![
Dataset::default()
.name("data2")
.marker(symbols::Marker::Dot)
.style(Style::default().fg(Color::Cyan))
.data(&app.data1),
Dataset::default()
.name("data3")
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.data(&app.data2),
];
let chart = Chart::new(datasets)
.block(
Block::default()
.title(Span::styled(
"Chart 1",
Style::default()
.fg(Color::Cyan)
.add_modifier(Modifier::BOLD),
))
.borders(Borders::ALL),
)
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().fg(Color::Gray))
.labels(x_labels)
.bounds(app.window),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().fg(Color::Gray))
.labels(vec![
Span::styled("-20", Style::default().add_modifier(Modifier::BOLD)),
Span::raw("0"),
Span::styled("20", Style::default().add_modifier(Modifier::BOLD)),
])
.bounds([-20.0, 20.0]),
);
f.render_widget(chart, chunks[0]);
let datasets = vec![Dataset::default()
.name("data")
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.graph_type(GraphType::Line)
.data(&DATA)];
let chart = Chart::new(datasets)
.block(
Block::default()
.title(Span::styled(
"Chart 2",
Style::default()
.fg(Color::Cyan)
.add_modifier(Modifier::BOLD),
))
.borders(Borders::ALL),
)
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().fg(Color::Gray))
.bounds([0.0, 5.0])
.labels(vec![
Span::styled("0", Style::default().add_modifier(Modifier::BOLD)),
Span::raw("2.5"),
Span::styled("5.0", Style::default().add_modifier(Modifier::BOLD)),
]),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().fg(Color::Gray))
.bounds([0.0, 5.0])
.labels(vec![
Span::styled("0", Style::default().add_modifier(Modifier::BOLD)),
Span::raw("2.5"),
Span::styled("5.0", Style::default().add_modifier(Modifier::BOLD)),
]),
);
f.render_widget(chart, chunks[1]);
let datasets = vec![Dataset::default()
.name("data")
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.graph_type(GraphType::Line)
.data(&DATA2)];
let chart = Chart::new(datasets)
.block(
Block::default()
.title(Span::styled(
"Chart 3",
Style::default()
.fg(Color::Cyan)
.add_modifier(Modifier::BOLD),
))
.borders(Borders::ALL),
)
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().fg(Color::Gray))
.bounds([0.0, 50.0])
.labels(vec![
Span::styled("0", Style::default().add_modifier(Modifier::BOLD)),
Span::raw("25"),
Span::styled("50", Style::default().add_modifier(Modifier::BOLD)),
]),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().fg(Color::Gray))
.bounds([0.0, 5.0])
.labels(vec![
Span::styled("0", Style::default().add_modifier(Modifier::BOLD)),
Span::raw("2.5"),
Span::styled("5", Style::default().add_modifier(Modifier::BOLD)),
]),
);
f.render_widget(chart, chunks[2]);
})?;
match events.next()? {
Event::Input(input) => {
if input == Key::Char('q') {
break;
}
}
Event::Tick => {
app.update();
}
}
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
mut app: App,
tick_rate: Duration,
) -> io::Result<()> {
let mut last_tick = Instant::now();
loop {
terminal.draw(|f| ui(f, &app))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if crossterm::event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(());
}
}
}
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
}
}
fn ui(frame: &mut Frame, app: &App) {
let area = frame.size();
let vertical = Layout::vertical([Constraint::Percentage(40), Constraint::Percentage(60)]);
let horizontal = Layout::horizontal([Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)]);
let [chart1, bottom] = area.split(&vertical);
let [line_chart, scatter] = bottom.split(&horizontal);
render_chart1(frame, chart1, app);
render_line_chart(frame, line_chart);
render_scatter(frame, scatter);
}
fn render_chart1(f: &mut Frame, area: Rect, app: &App) {
let x_labels = vec![
Span::styled(
format!("{}", app.window[0]),
Style::default().add_modifier(Modifier::BOLD),
),
Span::raw(format!("{}", (app.window[0] + app.window[1]) / 2.0)),
Span::styled(
format!("{}", app.window[1]),
Style::default().add_modifier(Modifier::BOLD),
),
];
let datasets = vec![
Dataset::default()
.name("data2")
.marker(symbols::Marker::Dot)
.style(Style::default().fg(Color::Cyan))
.data(&app.data1),
Dataset::default()
.name("data3")
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.data(&app.data2),
];
let chart = Chart::new(datasets)
.block(
Block::default()
.title("Chart 1".cyan().bold())
.borders(Borders::ALL),
)
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().fg(Color::Gray))
.labels(x_labels)
.bounds(app.window),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().fg(Color::Gray))
.labels(vec!["-20".bold(), "0".into(), "20".bold()])
.bounds([-20.0, 20.0]),
);
f.render_widget(chart, area);
}
fn render_line_chart(f: &mut Frame, area: Rect) {
let datasets = vec![Dataset::default()
.name("Line from only 2 points".italic())
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.graph_type(GraphType::Line)
.data(&[(1., 1.), (4., 4.)])];
let chart = Chart::new(datasets)
.block(
Block::default()
.title(
Title::default()
.content("Line chart".cyan().bold())
.alignment(Alignment::Center),
)
.borders(Borders::ALL),
)
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().gray())
.bounds([0.0, 5.0])
.labels(vec!["0".bold(), "2.5".into(), "5.0".bold()]),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().gray())
.bounds([0.0, 5.0])
.labels(vec!["0".bold(), "2.5".into(), "5.0".bold()]),
)
.legend_position(Some(LegendPosition::TopLeft))
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
f.render_widget(chart, area)
}
fn render_scatter(f: &mut Frame, area: Rect) {
let datasets = vec![
Dataset::default()
.name("Heavy")
.marker(Marker::Dot)
.graph_type(GraphType::Scatter)
.style(Style::new().yellow())
.data(&HEAVY_PAYLOAD_DATA),
Dataset::default()
.name("Medium".underlined())
.marker(Marker::Braille)
.graph_type(GraphType::Scatter)
.style(Style::new().magenta())
.data(&MEDIUM_PAYLOAD_DATA),
Dataset::default()
.name("Small")
.marker(Marker::Dot)
.graph_type(GraphType::Scatter)
.style(Style::new().cyan())
.data(&SMALL_PAYLOAD_DATA),
];
let chart = Chart::new(datasets)
.block(
Block::new().borders(Borders::all()).title(
Title::default()
.content("Scatter chart".cyan().bold())
.alignment(Alignment::Center),
),
)
.x_axis(
Axis::default()
.title("Year")
.bounds([1960., 2020.])
.style(Style::default().fg(Color::Gray))
.labels(vec!["1960".into(), "1990".into(), "2020".into()]),
)
.y_axis(
Axis::default()
.title("Cost")
.bounds([0., 75000.])
.style(Style::default().fg(Color::Gray))
.labels(vec!["0".into(), "37 500".into(), "75 000".into()]),
)
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
f.render_widget(chart, area);
}
// Data from https://ourworldindata.org/space-exploration-satellites
const HEAVY_PAYLOAD_DATA: [(f64, f64); 9] = [
(1965., 8200.),
(1967., 5400.),
(1981., 65400.),
(1989., 30800.),
(1997., 10200.),
(2004., 11600.),
(2014., 4500.),
(2016., 7900.),
(2018., 1500.),
];
const MEDIUM_PAYLOAD_DATA: [(f64, f64); 29] = [
(1963., 29500.),
(1964., 30600.),
(1965., 177900.),
(1965., 21000.),
(1966., 17900.),
(1966., 8400.),
(1975., 17500.),
(1982., 8300.),
(1985., 5100.),
(1988., 18300.),
(1990., 38800.),
(1990., 9900.),
(1991., 18700.),
(1992., 9100.),
(1994., 10500.),
(1994., 8500.),
(1994., 8700.),
(1997., 6200.),
(1999., 18000.),
(1999., 7600.),
(1999., 8900.),
(1999., 9600.),
(2000., 16000.),
(2001., 10000.),
(2002., 10400.),
(2002., 8100.),
(2010., 2600.),
(2013., 13600.),
(2017., 8000.),
];
const SMALL_PAYLOAD_DATA: [(f64, f64); 23] = [
(1961., 118500.),
(1962., 14900.),
(1975., 21400.),
(1980., 32800.),
(1988., 31100.),
(1990., 41100.),
(1993., 23600.),
(1994., 20600.),
(1994., 34600.),
(1996., 50600.),
(1997., 19200.),
(1997., 45800.),
(1998., 19100.),
(2000., 73100.),
(2003., 11200.),
(2008., 12600.),
(2010., 30500.),
(2012., 20000.),
(2013., 10600.),
(2013., 34500.),
(2015., 10600.),
(2018., 23100.),
(2019., 17300.),
];

12
examples/chart.tape Normal file
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# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/chart.tape`
Output "target/chart.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 800
Hide
Type "cargo run --example=chart --features=crossterm"
Enter
Sleep 1s
Show
Sleep 5s

267
examples/colors.rs Normal file
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/// This example shows all the colors supported by ratatui. It will render a grid of foreground
/// and background colors with their names and indexes.
use std::{
error::Error,
io::{self, Stdout},
result,
time::Duration,
};
use crossterm::{
event::{self, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
type Result<T> = result::Result<T, Box<dyn Error>>;
fn main() -> Result<()> {
let mut terminal = setup_terminal()?;
let res = run_app(&mut terminal);
restore_terminal(terminal)?;
if let Err(err) = res {
eprintln!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(terminal: &mut Terminal<B>) -> io::Result<()> {
loop {
terminal.draw(ui)?;
if event::poll(Duration::from_millis(250))? {
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(());
}
}
}
}
}
fn ui(frame: &mut Frame) {
let layout = Layout::vertical([
Constraint::Length(30),
Constraint::Length(17),
Constraint::Length(2),
])
.split(frame.size());
render_named_colors(frame, layout[0]);
render_indexed_colors(frame, layout[1]);
render_indexed_grayscale(frame, layout[2]);
}
const NAMED_COLORS: [Color; 16] = [
Color::Black,
Color::Red,
Color::Green,
Color::Yellow,
Color::Blue,
Color::Magenta,
Color::Cyan,
Color::Gray,
Color::DarkGray,
Color::LightRed,
Color::LightGreen,
Color::LightYellow,
Color::LightBlue,
Color::LightMagenta,
Color::LightCyan,
Color::White,
];
fn render_named_colors(frame: &mut Frame, area: Rect) {
let layout = Layout::vertical([Constraint::Length(3); 10]).split(area);
render_fg_named_colors(frame, Color::Reset, layout[0]);
render_fg_named_colors(frame, Color::Black, layout[1]);
render_fg_named_colors(frame, Color::DarkGray, layout[2]);
render_fg_named_colors(frame, Color::Gray, layout[3]);
render_fg_named_colors(frame, Color::White, layout[4]);
render_bg_named_colors(frame, Color::Reset, layout[5]);
render_bg_named_colors(frame, Color::Black, layout[6]);
render_bg_named_colors(frame, Color::DarkGray, layout[7]);
render_bg_named_colors(frame, Color::Gray, layout[8]);
render_bg_named_colors(frame, Color::White, layout[9]);
}
fn render_fg_named_colors(frame: &mut Frame, bg: Color, area: Rect) {
let block = title_block(format!("Foreground colors on {bg} background"));
let inner = block.inner(area);
frame.render_widget(block, area);
let layout = Layout::vertical([Constraint::Length(1); 2])
.split(inner)
.iter()
.flat_map(|area| {
Layout::horizontal([Constraint::Ratio(1, 8); 8])
.split(*area)
.to_vec()
})
.collect_vec();
for (i, &fg) in NAMED_COLORS.iter().enumerate() {
let color_name = fg.to_string();
let paragraph = Paragraph::new(color_name).fg(fg).bg(bg);
frame.render_widget(paragraph, layout[i]);
}
}
fn render_bg_named_colors(frame: &mut Frame, fg: Color, area: Rect) {
let block = title_block(format!("Background colors with {fg} foreground"));
let inner = block.inner(area);
frame.render_widget(block, area);
let layout = Layout::vertical([Constraint::Length(1); 2])
.split(inner)
.iter()
.flat_map(|area| {
Layout::horizontal([Constraint::Ratio(1, 8); 8])
.split(*area)
.to_vec()
})
.collect_vec();
for (i, &bg) in NAMED_COLORS.iter().enumerate() {
let color_name = bg.to_string();
let paragraph = Paragraph::new(color_name).fg(fg).bg(bg);
frame.render_widget(paragraph, layout[i]);
}
}
fn render_indexed_colors(frame: &mut Frame, area: Rect) {
let block = title_block("Indexed colors".into());
let inner = block.inner(area);
frame.render_widget(block, area);
let layout = Layout::vertical([
Constraint::Length(1), // 0 - 15
Constraint::Length(1), // blank
Constraint::Min(6), // 16 - 123
Constraint::Length(1), // blank
Constraint::Min(6), // 124 - 231
Constraint::Length(1), // blank
])
.split(inner);
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
let color_layout = Layout::horizontal([Constraint::Length(5); 16]).split(layout[0]);
for i in 0..16 {
let color = Color::Indexed(i);
let color_index = format!("{i:0>2}");
let bg = if i < 1 { Color::DarkGray } else { Color::Black };
let paragraph = Paragraph::new(Line::from(vec![
color_index.fg(color).bg(bg),
"██".bg(color).fg(color),
]));
frame.render_widget(paragraph, color_layout[i as usize]);
}
// 16 17 18 19 20 21 52 53 54 55 56 57 88 89 90 91 92 93
// 22 23 24 25 26 27 58 59 60 61 62 63 94 95 96 97 98 99
// 28 29 30 31 32 33 64 65 66 67 68 69 100 101 102 103 104 105
// 34 35 36 37 38 39 70 71 72 73 74 75 106 107 108 109 110 111
// 40 41 42 43 44 45 76 77 78 79 80 81 112 113 114 115 116 117
// 46 47 48 49 50 51 82 83 84 85 86 87 118 119 120 121 122 123
//
// 124 125 126 127 128 129 160 161 162 163 164 165 196 197 198 199 200 201
// 130 131 132 133 134 135 166 167 168 169 170 171 202 203 204 205 206 207
// 136 137 138 139 140 141 172 173 174 175 176 177 208 209 210 211 212 213
// 142 143 144 145 146 147 178 179 180 181 182 183 214 215 216 217 218 219
// 148 149 150 151 152 153 184 185 186 187 188 189 220 221 222 223 224 225
// 154 155 156 157 158 159 190 191 192 193 194 195 226 227 228 229 230 231
// the above looks complex but it's so the colors are grouped into blocks that display nicely
let index_layout = [layout[2], layout[4]]
.iter()
// two rows of 3 columns
.flat_map(|area| {
Layout::horizontal([Constraint::Length(27); 3])
.split(*area)
.to_vec()
})
// each with 6 rows
.flat_map(|area| {
Layout::vertical([Constraint::Length(1); 6])
.split(area)
.to_vec()
})
// each with 6 columns
.flat_map(|area| {
Layout::horizontal([Constraint::Min(4); 6])
.split(area)
.to_vec()
})
.collect_vec();
for i in 16..=231 {
let color = Color::Indexed(i);
let color_index = format!("{i:0>3}");
let paragraph = Paragraph::new(Line::from(vec![
color_index.fg(color).bg(Color::Reset),
".".bg(color).fg(color),
// There's a bug in VHS that seems to bleed backgrounds into the next
// character. This is a workaround to make the bug less obvious.
"███".reversed(),
]));
frame.render_widget(paragraph, index_layout[i as usize - 16]);
}
}
fn title_block(title: String) -> Block<'static> {
Block::default()
.borders(Borders::TOP)
.border_style(Style::new().dark_gray())
.title(title)
.title_alignment(Alignment::Center)
.title_style(Style::new().reset())
}
fn render_indexed_grayscale(frame: &mut Frame, area: Rect) {
let layout = Layout::vertical([
Constraint::Length(1), // 232 - 243
Constraint::Length(1), // 244 - 255
])
.split(area)
.iter()
.flat_map(|area| {
Layout::horizontal([Constraint::Length(6); 12])
.split(*area)
.to_vec()
})
.collect_vec();
for i in 232..=255 {
let color = Color::Indexed(i);
let color_index = format!("{i:0>3}");
// make the dark colors easier to read
let bg = if i < 244 { Color::Gray } else { Color::Black };
let paragraph = Paragraph::new(Line::from(vec![
color_index.fg(color).bg(bg),
"██".bg(color).fg(color),
// There's a bug in VHS that seems to bleed backgrounds into the next
// character. This is a workaround to make the bug less obvious.
"███████".reversed(),
]));
frame.render_widget(paragraph, layout[i as usize - 232]);
}
}
fn setup_terminal() -> Result<Terminal<CrosstermBackend<Stdout>>> {
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
Ok(terminal)
}
fn restore_terminal(mut terminal: Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
disable_raw_mode()?;
execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
terminal.show_cursor()?;
Ok(())
}

12
examples/colors.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/colors.tape`
Output "target/colors.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1410
Hide
Type "cargo run --example=colors --features=crossterm"
Enter
Sleep 2s
Show
Sleep 1s

225
examples/colors_rgb.rs Normal file
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/// This example shows the full range of RGB colors that can be displayed in the terminal.
///
/// Requires a terminal that supports 24-bit color (true color) and unicode.
use std::{
io::stdout,
time::{Duration, Instant},
};
use color_eyre::config::HookBuilder;
use crossterm::{
event::{self, Event, KeyCode, KeyEventKind},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use palette::{convert::FromColorUnclamped, Okhsv, Srgb};
use ratatui::{prelude::*, widgets::*};
fn main() -> color_eyre::Result<()> {
App::run()
}
#[derive(Debug, Default)]
struct App {
should_quit: bool,
// a 2d vec of the colors to render, calculated when the size changes as this is expensive
// to calculate every frame
colors: Vec<Vec<Color>>,
last_size: Rect,
fps: Fps,
frame_count: usize,
}
#[derive(Debug)]
struct Fps {
frame_count: usize,
last_instant: Instant,
fps: Option<f32>,
}
struct AppWidget<'a> {
title: Paragraph<'a>,
fps_widget: FpsWidget<'a>,
rgb_colors_widget: RgbColorsWidget<'a>,
}
struct FpsWidget<'a> {
fps: &'a Fps,
}
struct RgbColorsWidget<'a> {
/// The colors to render - should be double the height of the area
colors: &'a Vec<Vec<Color>>,
/// the number of elapsed frames that have passed - used to animate the colors
frame_count: usize,
}
impl App {
pub fn run() -> color_eyre::Result<()> {
install_panic_hook()?;
let mut terminal = init_terminal()?;
let mut app = Self::default();
while !app.should_quit {
app.tick();
terminal.draw(|frame| {
let size = frame.size();
app.setup_colors(size);
frame.render_widget(AppWidget::new(&app), size);
})?;
app.handle_events()?;
}
restore_terminal()?;
Ok(())
}
fn tick(&mut self) {
self.frame_count += 1;
self.fps.tick();
}
fn handle_events(&mut self) -> color_eyre::Result<()> {
if event::poll(Duration::from_secs_f32(1.0 / 60.0))? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press && key.code == KeyCode::Char('q') {
self.should_quit = true;
};
}
}
Ok(())
}
fn setup_colors(&mut self, size: Rect) {
// only update the colors if the size has changed since the last time we rendered
if self.last_size.width == size.width && self.last_size.height == size.height {
return;
}
self.last_size = size;
let Rect { width, height, .. } = size;
// double the height because each screen row has two rows of half block pixels
let height = height * 2;
self.colors.clear();
for y in 0..height {
let mut row = Vec::new();
for x in 0..width {
let hue = x as f32 * 360.0 / width as f32;
let value = (height - y) as f32 / height as f32;
let saturation = Okhsv::max_saturation();
let color = Okhsv::new(hue, saturation, value);
let color = Srgb::<f32>::from_color_unclamped(color);
let color: Srgb<u8> = color.into_format();
let color = Color::Rgb(color.red, color.green, color.blue);
row.push(color);
}
self.colors.push(row);
}
}
}
impl Fps {
fn tick(&mut self) {
self.frame_count += 1;
let elapsed = self.last_instant.elapsed();
// update the fps every second, but only if we've rendered at least 2 frames (to avoid
// noise in the fps calculation)
if elapsed > Duration::from_secs(1) && self.frame_count > 2 {
self.fps = Some(self.frame_count as f32 / elapsed.as_secs_f32());
self.frame_count = 0;
self.last_instant = Instant::now();
}
}
}
impl Default for Fps {
fn default() -> Self {
Self {
frame_count: 0,
last_instant: Instant::now(),
fps: None,
}
}
}
impl<'a> AppWidget<'a> {
fn new(app: &'a App) -> Self {
let title =
Paragraph::new("colors_rgb example. Press q to quit").alignment(Alignment::Center);
Self {
title,
fps_widget: FpsWidget { fps: &app.fps },
rgb_colors_widget: RgbColorsWidget {
colors: &app.colors,
frame_count: app.frame_count,
},
}
}
}
impl Widget for AppWidget<'_> {
fn render(self, area: Rect, buf: &mut Buffer) {
let vertical = Layout::vertical([Constraint::Length(1), Constraint::Min(0)]);
let horizontal = Layout::horizontal([Constraint::Min(0), Constraint::Length(8)]);
let [top, colors] = area.split(&vertical);
let [title, fps] = top.split(&horizontal);
self.title.render(title, buf);
self.fps_widget.render(fps, buf);
self.rgb_colors_widget.render(colors, buf);
}
}
impl Widget for RgbColorsWidget<'_> {
fn render(self, area: Rect, buf: &mut Buffer) {
let colors = self.colors;
for (xi, x) in (area.left()..area.right()).enumerate() {
// animate the colors by shifting the x index by the frame number
let xi = (xi + self.frame_count) % (area.width as usize);
for (yi, y) in (area.top()..area.bottom()).enumerate() {
let fg = colors[yi * 2][xi];
let bg = colors[yi * 2 + 1][xi];
buf.get_mut(x, y).set_char('▀').set_fg(fg).set_bg(bg);
}
}
}
}
impl<'a> Widget for FpsWidget<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
if let Some(fps) = self.fps.fps {
let text = format!("{:.1} fps", fps);
Paragraph::new(text).render(area, buf);
}
}
}
/// Install a panic hook that restores the terminal before panicking.
fn install_panic_hook() -> color_eyre::Result<()> {
let (panic, error) = HookBuilder::default().into_hooks();
let panic = panic.into_panic_hook();
let error = error.into_eyre_hook();
color_eyre::eyre::set_hook(Box::new(move |e| {
let _ = restore_terminal();
error(e)
}))?;
std::panic::set_hook(Box::new(move |info| {
let _ = restore_terminal();
panic(info)
}));
Ok(())
}
fn init_terminal() -> color_eyre::Result<Terminal<impl Backend>> {
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
let mut terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
terminal.clear()?;
terminal.hide_cursor()?;
Ok(terminal)
}
fn restore_terminal() -> color_eyre::Result<()> {
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}

21
examples/colors_rgb.tape Normal file
View File

@@ -0,0 +1,21 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/colors_rgb.tape`
# note that this script sometimes results in the gif having screen tearing
# issues. I'm not sure why, but it's not a problem with the library.
Output "target/colors_rgb.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1200
# unsure if these help the screen tearing issue, but they don't hurt
Set Framerate 60
Set CursorBlink false
Hide
Type "cargo run --example=colors_rgb --features=crossterm --release"
Enter
Sleep 2s
# Screenshot "target/colors_rgb.png"
Show
Sleep 10s

454
examples/constraints.rs Normal file
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@@ -0,0 +1,454 @@
use std::io::{self, stdout};
use color_eyre::{config::HookBuilder, Result};
use crossterm::{
event::{self, Event, KeyCode},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{layout::Constraint::*, prelude::*, style::palette::tailwind, widgets::*};
use strum::{Display, EnumIter, FromRepr, IntoEnumIterator};
const SPACER_HEIGHT: u16 = 0;
const ILLUSTRATION_HEIGHT: u16 = 4;
const EXAMPLE_HEIGHT: u16 = ILLUSTRATION_HEIGHT + SPACER_HEIGHT;
// priority 1
const FIXED_COLOR: Color = tailwind::RED.c900;
// priority 2
const MIN_COLOR: Color = tailwind::BLUE.c900;
const MAX_COLOR: Color = tailwind::BLUE.c800;
// priority 3
const LENGTH_COLOR: Color = tailwind::SLATE.c700;
const PERCENTAGE_COLOR: Color = tailwind::SLATE.c800;
const RATIO_COLOR: Color = tailwind::SLATE.c900;
// priority 4
const PROPORTIONAL_COLOR: Color = tailwind::SLATE.c950;
#[derive(Default, Clone, Copy)]
struct App {
selected_tab: SelectedTab,
scroll_offset: u16,
max_scroll_offset: u16,
state: AppState,
}
/// Tabs for the different examples
///
/// The order of the variants is the order in which they are displayed.
#[derive(Default, Debug, Copy, Clone, Display, FromRepr, EnumIter, PartialEq, Eq)]
enum SelectedTab {
#[default]
Fixed,
Min,
Max,
Length,
Percentage,
Ratio,
Proportional,
}
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
enum AppState {
#[default]
Running,
Quit,
}
fn main() -> Result<()> {
init_error_hooks()?;
let terminal = init_terminal()?;
// increase the cache size to avoid flickering for indeterminate layouts
Layout::init_cache(100);
App::default().run(terminal)?;
restore_terminal()?;
Ok(())
}
impl App {
fn run(&mut self, mut terminal: Terminal<impl Backend>) -> Result<()> {
self.update_max_scroll_offset();
while self.is_running() {
self.draw(&mut terminal)?;
self.handle_events()?;
}
Ok(())
}
fn update_max_scroll_offset(&mut self) {
self.max_scroll_offset = (self.selected_tab.get_example_count() - 1) * EXAMPLE_HEIGHT;
}
fn is_running(&self) -> bool {
self.state == AppState::Running
}
fn draw(self, terminal: &mut Terminal<impl Backend>) -> io::Result<()> {
terminal.draw(|frame| frame.render_widget(self, frame.size()))?;
Ok(())
}
fn handle_events(&mut self) -> Result<()> {
if let Event::Key(key) = event::read()? {
use KeyCode::*;
match key.code {
Char('q') | Esc => self.quit(),
Char('l') | Right => self.next(),
Char('h') | Left => self.previous(),
Char('j') | Down => self.down(),
Char('k') | Up => self.up(),
Char('g') | Home => self.top(),
Char('G') | End => self.bottom(),
_ => (),
}
}
Ok(())
}
fn quit(&mut self) {
self.state = AppState::Quit;
}
fn next(&mut self) {
self.selected_tab = self.selected_tab.next();
self.update_max_scroll_offset();
self.scroll_offset = 0;
}
fn previous(&mut self) {
self.selected_tab = self.selected_tab.previous();
self.update_max_scroll_offset();
self.scroll_offset = 0;
}
fn up(&mut self) {
self.scroll_offset = self.scroll_offset.saturating_sub(1)
}
fn down(&mut self) {
self.scroll_offset = self
.scroll_offset
.saturating_add(1)
.min(self.max_scroll_offset)
}
fn top(&mut self) {
self.scroll_offset = 0;
}
fn bottom(&mut self) {
self.scroll_offset = self.max_scroll_offset;
}
}
impl Widget for App {
fn render(self, area: Rect, buf: &mut Buffer) {
let [tabs, axis, demo] = area.split(&Layout::vertical([
Constraint::Fixed(3),
Constraint::Fixed(3),
Proportional(0),
]));
self.render_tabs(tabs, buf);
self.render_axis(axis, buf);
self.render_demo(demo, buf);
}
}
impl App {
fn render_tabs(&self, area: Rect, buf: &mut Buffer) {
let titles = SelectedTab::iter().map(SelectedTab::to_tab_title);
let block = Block::new()
.title("Constraints ".bold())
.title(" Use h l or ◄ ► to change tab and j k or ▲ ▼ to scroll");
Tabs::new(titles)
.block(block)
.highlight_style(Modifier::REVERSED)
.select(self.selected_tab as usize)
.padding("", "")
.divider(" ")
.render(area, buf);
}
fn render_axis(&self, area: Rect, buf: &mut Buffer) {
let width = area.width as usize;
// a bar like `<----- 80 px ----->`
let width_label = format!("{} px", width);
let width_bar = format!(
"<{width_label:-^width$}>",
width = width - width_label.len() / 2
);
Paragraph::new(width_bar.dark_gray())
.alignment(Alignment::Center)
.block(Block::default().padding(Padding {
left: 0,
right: 0,
top: 1,
bottom: 0,
}))
.render(area, buf);
}
/// Render the demo content
///
/// This function renders the demo content into a separate buffer and then splices the buffer
/// into the main buffer. This is done to make it possible to handle scrolling easily.
fn render_demo(&self, area: Rect, buf: &mut Buffer) {
// render demo content into a separate buffer so all examples fit we add an extra
// area.height to make sure the last example is fully visible even when the scroll offset is
// at the max
let height = self.selected_tab.get_example_count() * EXAMPLE_HEIGHT;
let demo_area = Rect::new(0, 0, area.width, height + area.height);
let mut demo_buf = Buffer::empty(demo_area);
let scrollbar_needed = self.scroll_offset != 0 || height > area.height;
let content_area = if scrollbar_needed {
Rect {
width: demo_area.width - 1,
..demo_area
}
} else {
demo_area
};
self.selected_tab.render(content_area, &mut demo_buf);
let visible_content = demo_buf
.content
.into_iter()
.skip((demo_area.width * self.scroll_offset) as usize)
.take(area.area() as usize);
for (i, cell) in visible_content.enumerate() {
let x = i as u16 % area.width;
let y = i as u16 / area.width;
*buf.get_mut(area.x + x, area.y + y) = cell;
}
if scrollbar_needed {
let mut state = ScrollbarState::new(self.max_scroll_offset as usize)
.position(self.scroll_offset as usize);
Scrollbar::new(ScrollbarOrientation::VerticalRight).render(area, buf, &mut state);
}
}
}
impl SelectedTab {
/// Get the previous tab, if there is no previous tab return the current tab.
fn previous(&self) -> Self {
let current_index: usize = *self as usize;
let previous_index = current_index.saturating_sub(1);
Self::from_repr(previous_index).unwrap_or(*self)
}
/// Get the next tab, if there is no next tab return the current tab.
fn next(&self) -> Self {
let current_index = *self as usize;
let next_index = current_index.saturating_add(1);
Self::from_repr(next_index).unwrap_or(*self)
}
fn get_example_count(&self) -> u16 {
use SelectedTab::*;
match self {
Fixed => 4,
Length => 4,
Percentage => 5,
Ratio => 4,
Proportional => 2,
Min => 5,
Max => 5,
}
}
fn to_tab_title(value: SelectedTab) -> Line<'static> {
use SelectedTab::*;
let text = format!(" {value} ");
let color = match value {
Fixed => FIXED_COLOR,
Length => LENGTH_COLOR,
Percentage => PERCENTAGE_COLOR,
Ratio => RATIO_COLOR,
Proportional => PROPORTIONAL_COLOR,
Min => MIN_COLOR,
Max => MAX_COLOR,
};
text.fg(tailwind::SLATE.c200).bg(color).into()
}
}
impl Widget for SelectedTab {
fn render(self, area: Rect, buf: &mut Buffer) {
match self {
SelectedTab::Fixed => self.render_fixed_example(area, buf),
SelectedTab::Length => self.render_length_example(area, buf),
SelectedTab::Percentage => self.render_percentage_example(area, buf),
SelectedTab::Ratio => self.render_ratio_example(area, buf),
SelectedTab::Proportional => self.render_proportional_example(area, buf),
SelectedTab::Min => self.render_min_example(area, buf),
SelectedTab::Max => self.render_max_example(area, buf),
}
}
}
impl SelectedTab {
fn render_fixed_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 5]));
Example::new(&[Fixed(40), Proportional(0)]).render(example1, buf);
Example::new(&[Fixed(20), Fixed(20), Proportional(0)]).render(example2, buf);
Example::new(&[Fixed(20), Min(20), Max(20)]).render(example3, buf);
Example::new(&[
Length(20),
Percentage(20),
Ratio(1, 5),
Proportional(1),
Fixed(15),
])
.render(example4, buf);
}
fn render_length_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 5]));
Example::new(&[Length(20), Fixed(20)]).render(example1, buf);
Example::new(&[Length(20), Length(20)]).render(example2, buf);
Example::new(&[Length(20), Min(20)]).render(example3, buf);
Example::new(&[Length(20), Max(20)]).render(example4, buf);
}
fn render_percentage_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, example5, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 6]));
Example::new(&[Percentage(75), Proportional(0)]).render(example1, buf);
Example::new(&[Percentage(25), Proportional(0)]).render(example2, buf);
Example::new(&[Percentage(50), Min(20)]).render(example3, buf);
Example::new(&[Percentage(0), Max(0)]).render(example4, buf);
Example::new(&[Percentage(0), Proportional(0)]).render(example5, buf);
}
fn render_ratio_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 5]));
Example::new(&[Ratio(1, 2); 2]).render(example1, buf);
Example::new(&[Ratio(1, 4); 4]).render(example2, buf);
Example::new(&[Ratio(1, 2), Ratio(1, 3), Ratio(1, 4)]).render(example3, buf);
Example::new(&[Ratio(1, 2), Percentage(25), Length(10)]).render(example4, buf);
}
fn render_proportional_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, _] = area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 3]));
Example::new(&[Proportional(1), Proportional(2), Proportional(3)]).render(example1, buf);
Example::new(&[Proportional(1), Percentage(50), Proportional(1)]).render(example2, buf);
}
fn render_min_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, example5, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 6]));
Example::new(&[Percentage(100), Min(0)]).render(example1, buf);
Example::new(&[Percentage(100), Min(20)]).render(example2, buf);
Example::new(&[Percentage(100), Min(40)]).render(example3, buf);
Example::new(&[Percentage(100), Min(60)]).render(example4, buf);
Example::new(&[Percentage(100), Min(80)]).render(example5, buf);
}
fn render_max_example(&self, area: Rect, buf: &mut Buffer) {
let [example1, example2, example3, example4, example5, _] =
area.split(&Layout::vertical([Fixed(EXAMPLE_HEIGHT); 6]));
Example::new(&[Percentage(0), Max(0)]).render(example1, buf);
Example::new(&[Percentage(0), Max(20)]).render(example2, buf);
Example::new(&[Percentage(0), Max(40)]).render(example3, buf);
Example::new(&[Percentage(0), Max(60)]).render(example4, buf);
Example::new(&[Percentage(0), Max(80)]).render(example5, buf);
}
}
struct Example {
constraints: Vec<Constraint>,
}
impl Example {
fn new(constraints: &[Constraint]) -> Self {
Self {
constraints: constraints.into(),
}
}
}
impl Widget for Example {
fn render(self, area: Rect, buf: &mut Buffer) {
let [area, _] = area.split(&Layout::vertical([
Fixed(ILLUSTRATION_HEIGHT),
Fixed(SPACER_HEIGHT),
]));
let blocks = Layout::horizontal(&self.constraints).split(area);
for (block, constraint) in blocks.iter().zip(&self.constraints) {
self.illustration(*constraint, block.width)
.render(*block, buf);
}
}
}
impl Example {
fn illustration(&self, constraint: Constraint, width: u16) -> Paragraph {
let color = match constraint {
Constraint::Fixed(_) => FIXED_COLOR,
Constraint::Length(_) => LENGTH_COLOR,
Constraint::Percentage(_) => PERCENTAGE_COLOR,
Constraint::Ratio(_, _) => RATIO_COLOR,
Constraint::Proportional(_) => PROPORTIONAL_COLOR,
Constraint::Min(_) => MIN_COLOR,
Constraint::Max(_) => MAX_COLOR,
};
let fg = Color::White;
let title = format!("{constraint}");
let content = format!("{width} px");
let text = format!("{title}\n{content}");
let block = Block::bordered()
.border_set(symbols::border::QUADRANT_OUTSIDE)
.border_style(Style::reset().fg(color).reversed())
.style(Style::default().fg(fg).bg(color));
Paragraph::new(text)
.alignment(Alignment::Center)
.block(block)
}
}
fn init_error_hooks() -> Result<()> {
let (panic, error) = HookBuilder::default().into_hooks();
let panic = panic.into_panic_hook();
let error = error.into_eyre_hook();
color_eyre::eyre::set_hook(Box::new(move |e| {
let _ = restore_terminal();
error(e)
}))?;
std::panic::set_hook(Box::new(move |info| {
let _ = restore_terminal();
panic(info)
}));
Ok(())
}
fn init_terminal() -> Result<Terminal<impl Backend>> {
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout());
let terminal = Terminal::new(backend)?;
Ok(terminal)
}
fn restore_terminal() -> Result<()> {
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}

14
examples/constraints.tape Normal file
View File

@@ -0,0 +1,14 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/constraints.tape`
Output "target/constraints.gif"
Set Theme "Aardvark Blue"
Set FontSize 18
Set Width 1200
Set Height 700
Hide
Type "cargo run --example=constraints --features=crossterm"
Enter
Sleep 2s
Show
Sleep 5s
Right @5s 7

View File

@@ -1,108 +0,0 @@
#[allow(dead_code)]
mod demo;
#[allow(dead_code)]
mod util;
use crate::demo::{ui, App};
use argh::FromArgs;
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event as CEvent, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use std::{
error::Error,
io::{stdout, Write},
sync::mpsc,
thread,
time::{Duration, Instant},
};
use tui::{backend::CrosstermBackend, Terminal};
enum Event<I> {
Input(I),
Tick,
}
/// Crossterm demo
#[derive(Debug, FromArgs)]
struct Cli {
/// time in ms between two ticks.
#[argh(option, default = "250")]
tick_rate: u64,
/// whether unicode symbols are used to improve the overall look of the app
#[argh(option, default = "true")]
enhanced_graphics: bool,
}
fn main() -> Result<(), Box<dyn Error>> {
let cli: Cli = argh::from_env();
enable_raw_mode()?;
let mut stdout = stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
// Setup input handling
let (tx, rx) = mpsc::channel();
let tick_rate = Duration::from_millis(cli.tick_rate);
thread::spawn(move || {
let mut last_tick = Instant::now();
loop {
// poll for tick rate duration, if no events, sent tick event.
let timeout = tick_rate
.checked_sub(last_tick.elapsed())
.unwrap_or_else(|| Duration::from_secs(0));
if event::poll(timeout).unwrap() {
if let CEvent::Key(key) = event::read().unwrap() {
tx.send(Event::Input(key)).unwrap();
}
}
if last_tick.elapsed() >= tick_rate {
tx.send(Event::Tick).unwrap();
last_tick = Instant::now();
}
}
});
let mut app = App::new("Crossterm Demo", cli.enhanced_graphics);
terminal.clear()?;
loop {
terminal.draw(|f| ui::draw(f, &mut app))?;
match rx.recv()? {
Event::Input(event) => match event.code {
KeyCode::Char('q') => {
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
break;
}
KeyCode::Char(c) => app.on_key(c),
KeyCode::Left => app.on_left(),
KeyCode::Up => app.on_up(),
KeyCode::Right => app.on_right(),
KeyCode::Down => app.on_down(),
_ => {}
},
Event::Tick => {
app.on_tick();
}
}
if app.should_quit {
break;
}
}
Ok(())
}

View File

@@ -1,74 +0,0 @@
mod demo;
#[allow(dead_code)]
mod util;
use crate::demo::{ui, App};
use argh::FromArgs;
use std::{
error::Error,
io,
time::{Duration, Instant},
};
use tui::{backend::CursesBackend, Terminal};
/// Curses demo
#[derive(Debug, FromArgs)]
struct Cli {
/// time in ms between two ticks.
#[argh(option, default = "250")]
tick_rate: u64,
/// whether unicode symbols are used to improve the overall look of the app
#[argh(option, default = "true")]
enhanced_graphics: bool,
}
fn main() -> Result<(), Box<dyn Error>> {
let cli: Cli = argh::from_env();
let mut backend =
CursesBackend::new().ok_or_else(|| io::Error::new(io::ErrorKind::Other, ""))?;
let curses = backend.get_curses_mut();
curses.set_echo(false);
curses.set_input_timeout(easycurses::TimeoutMode::WaitUpTo(50));
curses.set_input_mode(easycurses::InputMode::RawCharacter);
curses.set_keypad_enabled(true);
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
let mut app = App::new("Curses demo", cli.enhanced_graphics);
let mut last_tick = Instant::now();
let tick_rate = Duration::from_millis(cli.tick_rate);
loop {
terminal.draw(|f| ui::draw(f, &mut app))?;
if let Some(input) = terminal.backend_mut().get_curses_mut().get_input() {
match input {
easycurses::Input::Character(c) => {
app.on_key(c);
}
easycurses::Input::KeyUp => {
app.on_up();
}
easycurses::Input::KeyDown => {
app.on_down();
}
easycurses::Input::KeyLeft => {
app.on_left();
}
easycurses::Input::KeyRight => {
app.on_right();
}
_ => {}
};
};
terminal.backend_mut().get_curses_mut().flush_input();
if last_tick.elapsed() > tick_rate {
app.on_tick();
last_tick = Instant::now();
}
if app.should_quit {
break;
}
}
Ok(())
}

View File

@@ -1,59 +1,264 @@
#[allow(dead_code)]
mod util;
use std::{error::Error, io, ops::ControlFlow, time::Duration};
use crate::util::event::{Event, Events};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend, buffer::Buffer, layout::Rect, style::Style, widgets::Widget, Terminal,
use crossterm::{
event::{
self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, MouseButton, MouseEvent,
MouseEventKind,
},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::*};
/// A custom widget that renders a button with a label, theme and state.
#[derive(Debug, Clone)]
struct Button<'a> {
label: Line<'a>,
theme: Theme,
state: State,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum State {
Normal,
Selected,
Active,
}
#[derive(Debug, Clone, Copy)]
struct Theme {
text: Color,
background: Color,
highlight: Color,
shadow: Color,
}
const BLUE: Theme = Theme {
text: Color::Rgb(16, 24, 48),
background: Color::Rgb(48, 72, 144),
highlight: Color::Rgb(64, 96, 192),
shadow: Color::Rgb(32, 48, 96),
};
struct Label<'a> {
text: &'a str,
}
const RED: Theme = Theme {
text: Color::Rgb(48, 16, 16),
background: Color::Rgb(144, 48, 48),
highlight: Color::Rgb(192, 64, 64),
shadow: Color::Rgb(96, 32, 32),
};
impl<'a> Default for Label<'a> {
fn default() -> Label<'a> {
Label { text: "" }
const GREEN: Theme = Theme {
text: Color::Rgb(16, 48, 16),
background: Color::Rgb(48, 144, 48),
highlight: Color::Rgb(64, 192, 64),
shadow: Color::Rgb(32, 96, 32),
};
/// A button with a label that can be themed.
impl<'a> Button<'a> {
pub fn new<T: Into<Line<'a>>>(label: T) -> Button<'a> {
Button {
label: label.into(),
theme: BLUE,
state: State::Normal,
}
}
}
impl<'a> Widget for Label<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
buf.set_string(area.left(), area.top(), self.text, Style::default());
pub fn theme(mut self, theme: Theme) -> Button<'a> {
self.theme = theme;
self
}
}
impl<'a> Label<'a> {
fn text(mut self, text: &'a str) -> Label<'a> {
self.text = text;
pub fn state(mut self, state: State) -> Button<'a> {
self.state = state;
self
}
}
impl<'a> Widget for Button<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
let (background, text, shadow, highlight) = self.colors();
buf.set_style(area, Style::new().bg(background).fg(text));
// render top line if there's enough space
if area.height > 2 {
buf.set_string(
area.x,
area.y,
"".repeat(area.width as usize),
Style::new().fg(highlight).bg(background),
);
}
// render bottom line if there's enough space
if area.height > 1 {
buf.set_string(
area.x,
area.y + area.height - 1,
"".repeat(area.width as usize),
Style::new().fg(shadow).bg(background),
);
}
// render label centered
buf.set_line(
area.x + (area.width.saturating_sub(self.label.width() as u16)) / 2,
area.y + (area.height.saturating_sub(1)) / 2,
&self.label,
area.width,
);
}
}
impl Button<'_> {
fn colors(&self) -> (Color, Color, Color, Color) {
let theme = self.theme;
match self.state {
State::Normal => (theme.background, theme.text, theme.shadow, theme.highlight),
State::Selected => (theme.highlight, theme.text, theme.shadow, theme.highlight),
State::Active => (theme.background, theme.text, theme.highlight, theme.shadow),
}
}
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let events = Events::new();
// create app and run it
let res = run_app(&mut terminal);
loop {
terminal.draw(|f| {
let size = f.size();
let label = Label::default().text("Test");
f.render_widget(label, size);
})?;
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
if let Event::Input(key) = events.next()? {
if key == Key::Char('q') {
break;
}
}
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(terminal: &mut Terminal<B>) -> io::Result<()> {
let mut selected_button: usize = 0;
let button_states = &mut [State::Selected, State::Normal, State::Normal];
loop {
terminal.draw(|frame| ui(frame, button_states))?;
if !event::poll(Duration::from_millis(100))? {
continue;
}
match event::read()? {
Event::Key(key) => {
if key.kind != event::KeyEventKind::Press {
continue;
}
if handle_key_event(key, button_states, &mut selected_button).is_break() {
break;
}
}
Event::Mouse(mouse) => handle_mouse_event(mouse, button_states, &mut selected_button),
_ => (),
}
}
Ok(())
}
fn ui(frame: &mut Frame, states: &[State; 3]) {
let vertical = Layout::vertical([
Constraint::Length(1),
Constraint::Max(3),
Constraint::Length(1),
Constraint::Min(0), // ignore remaining space
]);
let [title, buttons, help, _] = frame.size().split(&vertical);
frame.render_widget(
Paragraph::new("Custom Widget Example (mouse enabled)"),
title,
);
render_buttons(frame, buttons, states);
frame.render_widget(Paragraph::new("←/→: select, Space: toggle, q: quit"), help);
}
fn render_buttons(frame: &mut Frame<'_>, area: Rect, states: &[State; 3]) {
let horizontal = Layout::horizontal([
Constraint::Length(15),
Constraint::Length(15),
Constraint::Length(15),
Constraint::Min(0), // ignore remaining space
]);
let [red, green, blue, _] = area.split(&horizontal);
frame.render_widget(Button::new("Red").theme(RED).state(states[0]), red);
frame.render_widget(Button::new("Green").theme(GREEN).state(states[1]), green);
frame.render_widget(Button::new("Blue").theme(BLUE).state(states[2]), blue);
}
fn handle_key_event(
key: event::KeyEvent,
button_states: &mut [State; 3],
selected_button: &mut usize,
) -> ControlFlow<()> {
match key.code {
KeyCode::Char('q') => return ControlFlow::Break(()),
KeyCode::Left | KeyCode::Char('h') => {
button_states[*selected_button] = State::Normal;
*selected_button = selected_button.saturating_sub(1);
button_states[*selected_button] = State::Selected;
}
KeyCode::Right | KeyCode::Char('l') => {
button_states[*selected_button] = State::Normal;
*selected_button = selected_button.saturating_add(1).min(2);
button_states[*selected_button] = State::Selected;
}
KeyCode::Char(' ') => {
if button_states[*selected_button] == State::Active {
button_states[*selected_button] = State::Normal;
} else {
button_states[*selected_button] = State::Active;
}
}
_ => (),
}
ControlFlow::Continue(())
}
fn handle_mouse_event(
mouse: MouseEvent,
button_states: &mut [State; 3],
selected_button: &mut usize,
) {
match mouse.kind {
MouseEventKind::Moved => {
let old_selected_button = *selected_button;
*selected_button = match mouse.column {
x if x < 15 => 0,
x if x < 30 => 1,
_ => 2,
};
if old_selected_button != *selected_button {
if button_states[old_selected_button] != State::Active {
button_states[old_selected_button] = State::Normal;
}
if button_states[*selected_button] != State::Active {
button_states[*selected_button] = State::Selected;
}
}
}
MouseEventKind::Down(MouseButton::Left) => {
if button_states[*selected_button] == State::Active {
button_states[*selected_button] = State::Normal;
} else {
button_states[*selected_button] = State::Active;
}
}
_ => (),
}
}

View File

@@ -0,0 +1,21 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/custom_widget.tape`
Output "target/custom_widget.gif"
Set Theme "Aardvark Blue"
Set Width 760
Set Height 260
Hide
Type "cargo run --example=custom_widget --features=crossterm"
Enter
Sleep 2s
Show
Sleep 1s
Set TypingSpeed 0.7s
Right
Right
Space
Space
Left
Space
Left
Space

18
examples/demo.tape Normal file
View File

@@ -0,0 +1,18 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/demo.tape`
Output "target/demo.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1200
Set PlaybackSpeed 0.5
Hide
Type "cargo run --example demo"
Enter
Sleep 2s
Show
Sleep 1s
Down@1s 12
Right
Sleep 4s
Right
Sleep 4s

View File

@@ -1,4 +1,8 @@
use crate::util::{RandomSignal, SinSignal, StatefulList, TabsState};
use rand::{
distributions::{Distribution, Uniform},
rngs::ThreadRng,
};
use ratatui::widgets::*;
const TASKS: [&str; 24] = [
"Item1", "Item2", "Item3", "Item4", "Item5", "Item6", "Item7", "Item8", "Item9", "Item10",
@@ -62,6 +66,120 @@ const EVENTS: [(&str, u64); 24] = [
("B24", 5),
];
#[derive(Clone)]
pub struct RandomSignal {
distribution: Uniform<u64>,
rng: ThreadRng,
}
impl RandomSignal {
pub fn new(lower: u64, upper: u64) -> RandomSignal {
RandomSignal {
distribution: Uniform::new(lower, upper),
rng: rand::thread_rng(),
}
}
}
impl Iterator for RandomSignal {
type Item = u64;
fn next(&mut self) -> Option<u64> {
Some(self.distribution.sample(&mut self.rng))
}
}
#[derive(Clone)]
pub struct SinSignal {
x: f64,
interval: f64,
period: f64,
scale: f64,
}
impl SinSignal {
pub fn new(interval: f64, period: f64, scale: f64) -> SinSignal {
SinSignal {
x: 0.0,
interval,
period,
scale,
}
}
}
impl Iterator for SinSignal {
type Item = (f64, f64);
fn next(&mut self) -> Option<Self::Item> {
let point = (self.x, (self.x * 1.0 / self.period).sin() * self.scale);
self.x += self.interval;
Some(point)
}
}
pub struct TabsState<'a> {
pub titles: Vec<&'a str>,
pub index: usize,
}
impl<'a> TabsState<'a> {
pub fn new(titles: Vec<&'a str>) -> TabsState {
TabsState { titles, index: 0 }
}
pub fn next(&mut self) {
self.index = (self.index + 1) % self.titles.len();
}
pub fn previous(&mut self) {
if self.index > 0 {
self.index -= 1;
} else {
self.index = self.titles.len() - 1;
}
}
}
pub struct StatefulList<T> {
pub state: ListState,
pub items: Vec<T>,
}
impl<T> StatefulList<T> {
pub fn with_items(items: Vec<T>) -> StatefulList<T> {
StatefulList {
state: ListState::default(),
items,
}
}
pub fn next(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i >= self.items.len() - 1 {
0
} else {
i + 1
}
}
None => 0,
};
self.state.select(Some(i));
}
pub fn previous(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i == 0 {
self.items.len() - 1
} else {
i - 1
}
}
None => 0,
};
self.state.select(Some(i));
}
}
pub struct Signal<S: Iterator> {
source: S,
pub points: Vec<S::Item>,
@@ -129,7 +247,7 @@ impl<'a> App<'a> {
App {
title,
should_quit: false,
tabs: TabsState::new(vec!["Tab0", "Tab1"]),
tabs: TabsState::new(vec!["Tab0", "Tab1", "Tab2"]),
show_chart: true,
progress: 0.0,
sparkline: Signal {

View File

@@ -0,0 +1,76 @@
use std::{
error::Error,
io,
time::{Duration, Instant},
};
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::prelude::*;
use crate::{app::App, ui};
pub fn run(tick_rate: Duration, enhanced_graphics: bool) -> Result<(), Box<dyn Error>> {
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
// create app and run it
let app = App::new("Crossterm Demo", enhanced_graphics);
let res = run_app(&mut terminal, app, tick_rate);
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
mut app: App,
tick_rate: Duration,
) -> io::Result<()> {
let mut last_tick = Instant::now();
loop {
terminal.draw(|f| ui::draw(f, &mut app))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if crossterm::event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
match key.code {
KeyCode::Left | KeyCode::Char('h') => app.on_left(),
KeyCode::Up | KeyCode::Char('k') => app.on_up(),
KeyCode::Right | KeyCode::Char('l') => app.on_right(),
KeyCode::Down | KeyCode::Char('j') => app.on_down(),
KeyCode::Char(c) => app.on_key(c),
_ => {}
}
}
}
}
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
if app.should_quit {
return Ok(());
}
}
}

36
examples/demo/main.rs Normal file
View File

@@ -0,0 +1,36 @@
use std::{error::Error, time::Duration};
use argh::FromArgs;
mod app;
#[cfg(feature = "crossterm")]
mod crossterm;
#[cfg(feature = "termion")]
mod termion;
#[cfg(feature = "termwiz")]
mod termwiz;
mod ui;
/// Demo
#[derive(Debug, FromArgs)]
struct Cli {
/// time in ms between two ticks.
#[argh(option, default = "250")]
tick_rate: u64,
/// whether unicode symbols are used to improve the overall look of the app
#[argh(option, default = "true")]
enhanced_graphics: bool,
}
fn main() -> Result<(), Box<dyn Error>> {
let cli: Cli = argh::from_env();
let tick_rate = Duration::from_millis(cli.tick_rate);
#[cfg(feature = "crossterm")]
crate::crossterm::run(tick_rate, cli.enhanced_graphics)?;
#[cfg(feature = "termion")]
crate::termion::run(tick_rate, cli.enhanced_graphics)?;
#[cfg(feature = "termwiz")]
crate::termwiz::run(tick_rate, cli.enhanced_graphics)?;
Ok(())
}

View File

@@ -1,3 +0,0 @@
mod app;
pub mod ui;
pub use app::App;

82
examples/demo/termion.rs Normal file
View File

@@ -0,0 +1,82 @@
use std::{error::Error, io, sync::mpsc, thread, time::Duration};
use ratatui::prelude::*;
use termion::{
event::Key,
input::{MouseTerminal, TermRead},
raw::IntoRawMode,
screen::IntoAlternateScreen,
};
use crate::{app::App, ui};
pub fn run(tick_rate: Duration, enhanced_graphics: bool) -> Result<(), Box<dyn Error>> {
// setup terminal
let stdout = io::stdout()
.into_raw_mode()
.unwrap()
.into_alternate_screen()
.unwrap();
let stdout = MouseTerminal::from(stdout);
let backend = TermionBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
// create app and run it
let app = App::new("Termion demo", enhanced_graphics);
run_app(&mut terminal, app, tick_rate)?;
Ok(())
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
mut app: App,
tick_rate: Duration,
) -> Result<(), Box<dyn Error>> {
let events = events(tick_rate);
loop {
terminal.draw(|f| ui::draw(f, &mut app))?;
match events.recv()? {
Event::Input(key) => match key {
Key::Up | Key::Char('k') => app.on_up(),
Key::Down | Key::Char('j') => app.on_down(),
Key::Left | Key::Char('h') => app.on_left(),
Key::Right | Key::Char('l') => app.on_right(),
Key::Char(c) => app.on_key(c),
_ => {}
},
Event::Tick => app.on_tick(),
}
if app.should_quit {
return Ok(());
}
}
}
enum Event {
Input(Key),
Tick,
}
fn events(tick_rate: Duration) -> mpsc::Receiver<Event> {
let (tx, rx) = mpsc::channel();
let keys_tx = tx.clone();
thread::spawn(move || {
let stdin = io::stdin();
for key in stdin.keys().flatten() {
if let Err(err) = keys_tx.send(Event::Input(key)) {
eprintln!("{err}");
return;
}
}
});
thread::spawn(move || loop {
if let Err(err) = tx.send(Event::Tick) {
eprintln!("{err}");
break;
}
thread::sleep(tick_rate);
});
rx
}

73
examples/demo/termwiz.rs Normal file
View File

@@ -0,0 +1,73 @@
use std::{
error::Error,
time::{Duration, Instant},
};
use ratatui::prelude::*;
use termwiz::{input::*, terminal::Terminal as TermwizTerminal};
use crate::{app::App, ui};
pub fn run(tick_rate: Duration, enhanced_graphics: bool) -> Result<(), Box<dyn Error>> {
let backend = TermwizBackend::new()?;
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
// create app and run it
let app = App::new("Termwiz Demo", enhanced_graphics);
let res = run_app(&mut terminal, app, tick_rate);
terminal.show_cursor()?;
terminal.flush()?;
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app(
terminal: &mut Terminal<TermwizBackend>,
mut app: App,
tick_rate: Duration,
) -> Result<(), Box<dyn Error>> {
let mut last_tick = Instant::now();
loop {
terminal.draw(|f| ui::draw(f, &mut app))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if let Some(input) = terminal
.backend_mut()
.buffered_terminal_mut()
.terminal()
.poll_input(Some(timeout))?
{
match input {
InputEvent::Key(key_code) => match key_code.key {
KeyCode::UpArrow | KeyCode::Char('k') => app.on_up(),
KeyCode::DownArrow | KeyCode::Char('j') => app.on_down(),
KeyCode::LeftArrow | KeyCode::Char('h') => app.on_left(),
KeyCode::RightArrow | KeyCode::Char('l') => app.on_right(),
KeyCode::Char(c) => app.on_key(c),
_ => {}
},
InputEvent::Resized { cols, rows } => {
terminal
.backend_mut()
.buffered_terminal_mut()
.resize(cols, rows);
}
_ => {}
}
}
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
if app.should_quit {
return Ok(());
}
}
}

View File

@@ -1,29 +1,18 @@
use crate::demo::App;
use tui::{
backend::Backend,
layout::{Constraint, Direction, Layout, Rect},
style::{Color, Modifier, Style},
symbols,
text::{Span, Spans},
widgets::canvas::{Canvas, Line, Map, MapResolution, Rectangle},
widgets::{
Axis, BarChart, Block, Borders, Chart, Dataset, Gauge, LineGauge, List, ListItem,
Paragraph, Row, Sparkline, Table, Tabs, Wrap,
},
Frame,
use ratatui::{
prelude::*,
widgets::{canvas::*, *},
};
pub fn draw<B: Backend>(f: &mut Frame<B>, app: &mut App) {
let chunks = Layout::default()
.constraints([Constraint::Length(3), Constraint::Min(0)].as_ref())
.split(f.size());
let titles = app
use crate::app::App;
pub fn draw(f: &mut Frame, app: &mut App) {
let chunks = Layout::vertical([Constraint::Length(3), Constraint::Min(0)]).split(f.size());
let tabs = app
.tabs
.titles
.iter()
.map(|t| Spans::from(Span::styled(*t, Style::default().fg(Color::Green))))
.collect();
let tabs = Tabs::new(titles)
.map(|t| text::Line::from(Span::styled(*t, Style::default().fg(Color::Green))))
.collect::<Tabs>()
.block(Block::default().borders(Borders::ALL).title(app.title))
.highlight_style(Style::default().fg(Color::Yellow))
.select(app.tabs.index);
@@ -31,44 +20,31 @@ pub fn draw<B: Backend>(f: &mut Frame<B>, app: &mut App) {
match app.tabs.index {
0 => draw_first_tab(f, app, chunks[1]),
1 => draw_second_tab(f, app, chunks[1]),
2 => draw_third_tab(f, app, chunks[1]),
_ => {}
};
}
fn draw_first_tab<B>(f: &mut Frame<B>, app: &mut App, area: Rect)
where
B: Backend,
{
let chunks = Layout::default()
.constraints(
[
Constraint::Length(9),
Constraint::Min(8),
Constraint::Length(7),
]
.as_ref(),
)
.split(area);
fn draw_first_tab(f: &mut Frame, app: &mut App, area: Rect) {
let chunks = Layout::vertical([
Constraint::Length(9),
Constraint::Min(8),
Constraint::Length(7),
])
.split(area);
draw_gauges(f, app, chunks[0]);
draw_charts(f, app, chunks[1]);
draw_text(f, chunks[2]);
}
fn draw_gauges<B>(f: &mut Frame<B>, app: &mut App, area: Rect)
where
B: Backend,
{
let chunks = Layout::default()
.constraints(
[
Constraint::Length(2),
Constraint::Length(3),
Constraint::Length(1),
]
.as_ref(),
)
.margin(1)
.split(area);
fn draw_gauges(f: &mut Frame, app: &mut App, area: Rect) {
let chunks = Layout::vertical([
Constraint::Length(2),
Constraint::Length(3),
Constraint::Length(1),
])
.margin(1)
.split(area);
let block = Block::default().borders(Borders::ALL).title("Graphs");
f.render_widget(block, area);
@@ -81,6 +57,7 @@ where
.bg(Color::Black)
.add_modifier(Modifier::ITALIC | Modifier::BOLD),
)
.use_unicode(app.enhanced_graphics)
.label(label)
.ratio(app.progress);
f.render_widget(gauge, chunks[0]);
@@ -108,35 +85,27 @@ where
f.render_widget(line_gauge, chunks[2]);
}
fn draw_charts<B>(f: &mut Frame<B>, app: &mut App, area: Rect)
where
B: Backend,
{
fn draw_charts(f: &mut Frame, app: &mut App, area: Rect) {
let constraints = if app.show_chart {
vec![Constraint::Percentage(50), Constraint::Percentage(50)]
} else {
vec![Constraint::Percentage(100)]
};
let chunks = Layout::default()
.constraints(constraints)
.direction(Direction::Horizontal)
.split(area);
let chunks = Layout::horizontal(constraints).split(area);
{
let chunks = Layout::default()
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
let chunks = Layout::vertical([Constraint::Percentage(50), Constraint::Percentage(50)])
.split(chunks[0]);
{
let chunks = Layout::default()
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.direction(Direction::Horizontal)
.split(chunks[0]);
let chunks =
Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)])
.split(chunks[0]);
// Draw tasks
let tasks: Vec<ListItem> = app
.tasks
.items
.iter()
.map(|i| ListItem::new(vec![Spans::from(Span::raw(*i))]))
.map(|i| ListItem::new(vec![text::Line::from(Span::raw(*i))]))
.collect();
let tasks = List::new(tasks)
.block(Block::default().borders(Borders::ALL).title("List"))
@@ -160,8 +129,8 @@ where
"WARNING" => warning_style,
_ => info_style,
};
let content = vec![Spans::from(vec![
Span::styled(format!("{:<9}", level), s),
let content = vec![text::Line::from(vec![
Span::styled(format!("{level:<9}"), s),
Span::raw(evt),
])];
ListItem::new(content)
@@ -255,14 +224,11 @@ where
}
}
fn draw_text<B>(f: &mut Frame<B>, area: Rect)
where
B: Backend,
{
fn draw_text(f: &mut Frame, area: Rect) {
let text = vec![
Spans::from("This is a paragraph with several lines. You can change style your text the way you want"),
Spans::from(""),
Spans::from(vec![
text::Line::from("This is a paragraph with several lines. You can change style your text the way you want"),
text::Line::from(""),
text::Line::from(vec![
Span::from("For example: "),
Span::styled("under", Style::default().fg(Color::Red)),
Span::raw(" "),
@@ -271,7 +237,7 @@ where
Span::styled("rainbow", Style::default().fg(Color::Blue)),
Span::raw("."),
]),
Spans::from(vec![
text::Line::from(vec![
Span::raw("Oh and if you didn't "),
Span::styled("notice", Style::default().add_modifier(Modifier::ITALIC)),
Span::raw(" you can "),
@@ -282,7 +248,7 @@ where
Span::styled("text", Style::default().add_modifier(Modifier::UNDERLINED)),
Span::raw(".")
]),
Spans::from(
text::Line::from(
"One more thing is that it should display unicode characters: 10€"
),
];
@@ -296,35 +262,35 @@ where
f.render_widget(paragraph, area);
}
fn draw_second_tab<B>(f: &mut Frame<B>, app: &mut App, area: Rect)
where
B: Backend,
{
let chunks = Layout::default()
.constraints([Constraint::Percentage(30), Constraint::Percentage(70)].as_ref())
.direction(Direction::Horizontal)
.split(area);
fn draw_second_tab(f: &mut Frame, app: &mut App, area: Rect) {
let chunks =
Layout::horizontal([Constraint::Percentage(30), Constraint::Percentage(70)]).split(area);
let up_style = Style::default().fg(Color::Green);
let failure_style = Style::default()
.fg(Color::Red)
.add_modifier(Modifier::RAPID_BLINK | Modifier::CROSSED_OUT);
let header = ["Server", "Location", "Status"];
let rows = app.servers.iter().map(|s| {
let style = if s.status == "Up" {
up_style
} else {
failure_style
};
Row::StyledData(vec![s.name, s.location, s.status].into_iter(), style)
Row::new(vec![s.name, s.location, s.status]).style(style)
});
let table = Table::new(header.iter(), rows)
.block(Block::default().title("Servers").borders(Borders::ALL))
.header_style(Style::default().fg(Color::Yellow))
.widths(&[
let table = Table::new(
rows,
[
Constraint::Length(15),
Constraint::Length(15),
Constraint::Length(10),
]);
],
)
.header(
Row::new(vec!["Server", "Location", "Status"])
.style(Style::default().fg(Color::Yellow))
.bottom_margin(1),
)
.block(Block::default().title("Servers").borders(Borders::ALL));
f.render_widget(table, chunks[0]);
let map = Canvas::default()
@@ -342,9 +308,15 @@ where
height: 10.0,
color: Color::Yellow,
});
ctx.draw(&Circle {
x: app.servers[2].coords.1,
y: app.servers[2].coords.0,
radius: 10.0,
color: Color::Green,
});
for (i, s1) in app.servers.iter().enumerate() {
for s2 in &app.servers[i + 1..] {
ctx.draw(&Line {
ctx.draw(&canvas::Line {
x1: s1.coords.1,
y1: s1.coords.0,
y2: s2.coords.0,
@@ -359,7 +331,11 @@ where
} else {
Color::Red
};
ctx.print(server.coords.1, server.coords.0, "X", color);
ctx.print(
server.coords.1,
server.coords.0,
Span::styled("X", Style::default().fg(color)),
);
}
})
.marker(if app.enhanced_graphics {
@@ -371,3 +347,47 @@ where
.y_bounds([-90.0, 90.0]);
f.render_widget(map, chunks[1]);
}
fn draw_third_tab(f: &mut Frame, _app: &mut App, area: Rect) {
let chunks = Layout::horizontal([Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)]).split(area);
let colors = [
Color::Reset,
Color::Black,
Color::Red,
Color::Green,
Color::Yellow,
Color::Blue,
Color::Magenta,
Color::Cyan,
Color::Gray,
Color::DarkGray,
Color::LightRed,
Color::LightGreen,
Color::LightYellow,
Color::LightBlue,
Color::LightMagenta,
Color::LightCyan,
Color::White,
];
let items: Vec<Row> = colors
.iter()
.map(|c| {
let cells = vec![
Cell::from(Span::raw(format!("{c:?}: "))),
Cell::from(Span::styled("Foreground", Style::default().fg(*c))),
Cell::from(Span::styled("Background", Style::default().bg(*c))),
];
Row::new(cells)
})
.collect();
let table = Table::new(
items,
[
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
],
)
.block(Block::default().title("Colors").borders(Borders::ALL));
f.render_widget(table, chunks[0]);
}

View File

@@ -0,0 +1,18 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/demo.tape`
# NOTE: Requires VHS 0.6.1 or later for Screenshot support
Output "target/demo2-destroy.gif"
Set Theme "Aardvark Blue"
# The reason for this strange size is that the social preview image for this
# demo is 1280x64 with 80 pixels of padding on each side. We want a version
# without the padding for README.md, etc.
Set Width 1120
Set Height 480
Set Padding 0
Hide
Type "cargo run --example demo2 --features crossterm,widget-calendar"
Enter
Sleep 2s
Show
Type "d"
Sleep 30s

View File

@@ -0,0 +1,43 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/demo.tape`
Output "target/demo2-social.gif"
Set Theme "Aardvark Blue"
# Github social preview size (1280x640 with 80px padding) and must be < 1MB
# This puts some constraints on the amount of interactivity we can do.
Set Width 1280
Set Height 640
Set Padding 80
Hide
Type "cargo run --example demo2 --features crossterm,widget-calendar"
Enter
Sleep 2s
Show
# About screen
Sleep 3.5s
Down # Red eye
Sleep 0.4s
Down # black eye
Sleep 1s
Tab
# Recipe
Sleep 1s
Set TypingSpeed 500ms
Down 7
Sleep 1s
Tab
# Email
Sleep 2s
Down 4
Sleep 2s
Tab
# Trace route
Sleep 1s
Set TypingSpeed 200ms
Down 10
Sleep 2s
Tab
# Weather
Set TypingSpeed 100ms
Down 40
Sleep 2s

49
examples/demo2.tape Normal file
View File

@@ -0,0 +1,49 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/demo.tape`
# NOTE: Requires VHS 0.6.1 or later for Screenshot support
Output "target/demo2.gif"
Set Theme "Aardvark Blue"
# The reason for this strange size is that the social preview image for this
# demo is 1280x64 with 80 pixels of padding on each side. We want a version
# without the padding for README.md, etc.
Set Width 1120
Set Height 480
Set Padding 0
Hide
Type "cargo run --example demo2 --features crossterm,widget-calendar"
Enter
Sleep 2s
Show
# About screen
Screenshot "target/demo2-about.png"
Sleep 3.5s
Down # Red eye
Sleep 0.4s
Down # black eye
Sleep 1s
Tab
# Recipe
Screenshot "target/demo2-recipe.png"
Sleep 1s
Set TypingSpeed 500ms
Down 7
Sleep 1s
Tab
# Email
Screenshot "target/demo2-email.png"
Sleep 2s
Down 4
Sleep 2s
Tab
# Trace route
Screenshot "target/demo2-trace.png"
Sleep 1s
Set TypingSpeed 200ms
Down 10
Sleep 2s
Tab
# Weather
Screenshot "target/demo2-weather.png"
Set TypingSpeed 100ms
Down 40
Sleep 2s

252
examples/demo2/app.rs Normal file
View File

@@ -0,0 +1,252 @@
use std::time::Duration;
use anyhow::{Context, Result};
use crossterm::event::{Event, KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
use rand::Rng;
use rand_chacha::rand_core::SeedableRng;
use ratatui::{buffer::Cell, layout::Flex, prelude::*, widgets::Widget};
use unicode_width::UnicodeWidthStr;
use crate::{
big_text::{BigTextBuilder, PixelSize},
Root, Term,
};
#[derive(Debug)]
pub struct App {
term: Term,
context: AppContext,
mode: Mode,
}
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
enum Mode {
#[default]
Normal,
Destroy,
Quit,
}
#[derive(Debug, Default, Clone, Copy)]
pub struct AppContext {
pub tab_index: usize,
pub row_index: usize,
}
impl App {
fn new() -> Result<Self> {
Ok(Self {
term: Term::start()?,
context: AppContext::default(),
mode: Mode::Normal,
})
}
pub fn run() -> Result<()> {
install_panic_hook();
let mut app = Self::new()?;
while !app.should_quit() {
app.draw()?;
app.handle_events()?;
}
Term::stop()?;
Ok(())
}
fn draw(&mut self) -> Result<()> {
self.term
.draw(|frame| {
frame.render_widget(Root::new(&self.context), frame.size());
if self.mode == Mode::Destroy {
destroy(frame);
}
})
.context("terminal.draw")?;
Ok(())
}
fn handle_events(&mut self) -> Result<()> {
// https://superuser.com/questions/1449366/do-60-fps-gifs-actually-exist-or-is-the-maximum-50-fps
const GIF_FRAME_RATE: f64 = 50.0;
match Term::next_event(Duration::from_secs_f64(1.0 / GIF_FRAME_RATE))? {
Some(Event::Key(key)) => self.handle_key_event(key),
Some(Event::Resize(width, height)) => {
Ok(self.term.resize(Rect::new(0, 0, width, height))?)
}
_ => Ok(()),
}
}
fn handle_key_event(&mut self, key: KeyEvent) -> Result<()> {
if key.kind != KeyEventKind::Press {
return Ok(());
}
let context = &mut self.context;
const TAB_COUNT: usize = 5;
match key.code {
KeyCode::Char('q') | KeyCode::Esc => {
self.mode = Mode::Quit;
}
KeyCode::Tab | KeyCode::BackTab if key.modifiers.contains(KeyModifiers::SHIFT) => {
let tab_index = context.tab_index + TAB_COUNT; // to wrap around properly
context.tab_index = tab_index.saturating_sub(1) % TAB_COUNT;
context.row_index = 0;
}
KeyCode::Tab | KeyCode::BackTab => {
context.tab_index = context.tab_index.saturating_add(1) % TAB_COUNT;
context.row_index = 0;
}
KeyCode::Up | KeyCode::Char('k') => {
context.row_index = context.row_index.saturating_sub(1);
}
KeyCode::Down | KeyCode::Char('j') => {
context.row_index = context.row_index.saturating_add(1);
}
KeyCode::Char('d') => {
self.mode = Mode::Destroy;
}
_ => {}
};
Ok(())
}
fn should_quit(&self) -> bool {
self.mode == Mode::Quit
}
}
/// delay the start of the animation so it doesn't start immediately
const DELAY: usize = 240;
/// higher means more pixels per frame are modified in the animation
const DRIP_SPEED: usize = 50;
/// delay the start of the text animation so it doesn't start immediately after the initial delay
const TEXT_DELAY: usize = 240;
/// Destroy mode activated by pressing `d`
fn destroy(frame: &mut Frame<'_>) {
let frame_count = frame.count().saturating_sub(DELAY);
if frame_count == 0 {
return;
}
let area = frame.size();
let buf = frame.buffer_mut();
drip(frame_count, area, buf);
text(frame_count, area, buf);
}
/// Move a bunch of random pixels down one row.
///
/// Each pick some random pixels and move them each down one row. This is a very inefficient way to
/// do this, but it works well enough for this demo.
fn drip(frame_count: usize, area: Rect, buf: &mut Buffer) {
// a seeded rng as we have to move the same random pixels each frame
let mut rng = rand_chacha::ChaCha8Rng::seed_from_u64(10);
let ramp_frames = 450;
let fractional_speed = frame_count as f64 / ramp_frames as f64;
let variable_speed = DRIP_SPEED as f64 * fractional_speed * fractional_speed * fractional_speed;
let pixel_count = (frame_count as f64 * variable_speed).floor() as usize;
for _ in 0..pixel_count {
let src_x = rng.gen_range(0..area.width);
let src_y = rng.gen_range(1..area.height - 2);
let src = buf.get_mut(src_x, src_y).clone();
// 1% of the time, move a blank or pixel (10:1) to the top line of the screen
if rng.gen_ratio(1, 100) {
let dest_x = rng
.gen_range(src_x.saturating_sub(5)..src_x.saturating_add(5))
.clamp(area.left(), area.right() - 1);
let dest_y = area.top() + 1;
let dest = buf.get_mut(dest_x, dest_y);
// copy the cell to the new location about 1/10 of the time blank out the cell the rest
// of the time. This has the effect of gradually removing the pixels from the screen.
if rng.gen_ratio(1, 10) {
*dest = src;
} else {
*dest = Cell::default();
}
} else {
// move the pixel down one row
let dest_x = src_x;
let dest_y = src_y.saturating_add(1).min(area.bottom() - 2);
// copy the cell to the new location
let dest = buf.get_mut(dest_x, dest_y);
*dest = src;
}
}
}
/// draw some text fading in and out from black to red and back
fn text(frame_count: usize, area: Rect, buf: &mut Buffer) {
let sub_frame = frame_count.saturating_sub(TEXT_DELAY);
if sub_frame == 0 {
return;
}
let line = "RATATUI";
let big_text = BigTextBuilder::default()
.lines([line.into()])
.pixel_size(PixelSize::Full)
.style(Style::new().fg(Color::Rgb(255, 0, 0)))
.build()
.unwrap();
// the font size is 8x8 for each character and we have 1 line
let area = centered_rect(area, line.width() as u16 * 8, 8);
let mask_buf = &mut Buffer::empty(area);
big_text.render(area, mask_buf);
let percentage = (sub_frame as f64 / 480.0).clamp(0.0, 1.0);
for row in area.rows() {
for col in row.columns() {
let cell = buf.get_mut(col.x, col.y);
let mask_cell = mask_buf.get(col.x, col.y);
cell.set_symbol(mask_cell.symbol());
// blend the mask cell color with the cell color
let cell_color = cell.style().bg.unwrap_or(Color::Rgb(0, 0, 0));
let mask_color = mask_cell.style().fg.unwrap_or(Color::Rgb(255, 0, 0));
let color = blend(mask_color, cell_color, percentage);
cell.set_style(Style::new().fg(color));
}
}
}
fn blend(mask_color: Color, cell_color: Color, percentage: f64) -> Color {
let Color::Rgb(mask_red, mask_green, mask_blue) = mask_color else {
return mask_color;
};
let Color::Rgb(cell_red, cell_green, cell_blue) = cell_color else {
return mask_color;
};
let red = mask_red as f64 * percentage + cell_red as f64 * (1.0 - percentage);
let green = mask_green as f64 * percentage + cell_green as f64 * (1.0 - percentage);
let blue = mask_blue as f64 * percentage + cell_blue as f64 * (1.0 - percentage);
Color::Rgb(red as u8, green as u8, blue as u8)
}
/// a centered rect of the given size
fn centered_rect(area: Rect, width: u16, height: u16) -> Rect {
let horizontal = Layout::horizontal([width]).flex(Flex::Center);
let vertical = Layout::vertical([height]).flex(Flex::Center);
let [area] = area.split(&vertical);
let [area] = area.split(&horizontal);
area
}
pub fn install_panic_hook() {
better_panic::install();
let hook = std::panic::take_hook();
std::panic::set_hook(Box::new(move |info| {
let _ = Term::stop();
hook(info);
std::process::exit(1);
}));
}

815
examples/demo2/big_text.rs Normal file
View File

@@ -0,0 +1,815 @@
//! [tui-big-text] is a rust crate that renders large pixel text as a [Ratatui] widget using the
//! glyphs from the [font8x8] crate.
//!
//! ![Hello World example](https://vhs.charm.sh/vhs-2UxNc2SJgiNqHoowbsXAMW.gif)
//!
//! # Installation
//!
//! ```shell
//! cargo add ratatui tui-big-text
//! ```
//!
//! # Usage
//!
//! Create a [`BigText`] widget using `BigTextBuilder` and pass it to [`Frame::render_widget`] to
//! render be rendered. The builder allows you to customize the [`Style`] of the widget and the
//! [`PixelSize`] of the glyphs. The [`PixelSize`] can be used to control how many character cells
//! are used to represent a single pixel of the 8x8 font.
//!
//! # Example
//!
//! ```rust
//! use anyhow::Result;
//! use ratatui::prelude::*;
//! use tui_big_text::{BigTextBuilder, PixelSize};
//!
//! fn render(frame: &mut Frame) -> Result<()> {
//! let big_text = BigTextBuilder::default()
//! .pixel_size(PixelSize::Full)
//! .style(Style::new().blue())
//! .lines(vec![
//! "Hello".red().into(),
//! "World".white().into(),
//! "~~~~~".into(),
//! ])
//! .build()?;
//! frame.render_widget(big_text, frame.size());
//! Ok(())
//! }
//! ```
//!
//! [tui-big-text]: https://crates.io/crates/tui-big-text
//! [Ratatui]: https://crates.io/crates/ratatui
//! [font8x8]: https://crates.io/crates/font8x8
//! [`BigText`]: crate::BigText
//! [`PixelSize`]: crate::PixelSize
//! [`Frame::render_widget`]: ratatui::Frame::render_widget
//! [`Style`]: ratatui::style::Style
use std::cmp::min;
use derive_builder::Builder;
use font8x8::UnicodeFonts;
use ratatui::{prelude::*, text::StyledGrapheme, widgets::Widget};
#[allow(unused)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash, Default)]
pub enum PixelSize {
#[default]
/// A pixel from the 8x8 font is represented by a full character cell in the terminal.
Full,
/// A pixel from the 8x8 font is represented by a half (upper/lower) character cell in the
/// terminal.
HalfHeight,
/// A pixel from the 8x8 font is represented by a half (left/right) character cell in the
/// terminal.
HalfWidth,
/// A pixel from the 8x8 font is represented by a quadrant of a character cell in the terminal.
Quadrant,
}
/// Displays one or more lines of text using 8x8 pixel characters.
///
/// The text is rendered using the [font8x8](https://crates.io/crates/font8x8) crate.
///
/// Using the `pixel_size` method, you can also chose, how 'big' a pixel should be.
/// Currently a pixel of the 8x8 font can be represented by one full or half
/// (horizontal/vertical/both) character cell of the terminal.
///
/// # Examples
///
/// ```rust
/// use ratatui::prelude::*;
/// use tui_big_text::{BigTextBuilder, PixelSize};
///
/// BigText::builder()
/// .pixel_size(PixelSize::Full)
/// .style(Style::new().white())
/// .lines(vec![
/// "Hello".red().into(),
/// "World".blue().into(),
/// "=====".into(),
/// ])
/// .build();
/// ```
///
/// Renders:
///
/// ```plain
/// ██ ██ ███ ███
/// ██ ██ ██ ██
/// ██ ██ ████ ██ ██ ████
/// ██████ ██ ██ ██ ██ ██ ██
/// ██ ██ ██████ ██ ██ ██ ██
/// ██ ██ ██ ██ ██ ██ ██
/// ██ ██ ████ ████ ████ ████
///
/// ██ ██ ███ ███
/// ██ ██ ██ ██
/// ██ ██ ████ ██ ███ ██ ██
/// ██ █ ██ ██ ██ ███ ██ ██ █████
/// ███████ ██ ██ ██ ██ ██ ██ ██
/// ███ ███ ██ ██ ██ ██ ██ ██
/// ██ ██ ████ ████ ████ ███ ██
///
/// ███ ██ ███ ██ ███ ██ ███ ██ ███ ██
/// ██ ███ ██ ███ ██ ███ ██ ███ ██ ███
/// ```
#[derive(Debug, Builder, Clone, PartialEq, Eq, Hash)]
pub struct BigText<'a> {
/// The text to display
#[builder(setter(into))]
lines: Vec<Line<'a>>,
/// The style of the widget
///
/// Defaults to `Style::default()`
#[builder(default)]
style: Style,
/// The size of single glyphs
///
/// Defaults to `BigTextSize::default()` (=> BigTextSize::Full)
#[builder(default)]
pixel_size: PixelSize,
}
impl Widget for BigText<'_> {
fn render(self, area: Rect, buf: &mut Buffer) {
let layout = layout(area, &self.pixel_size);
for (line, line_layout) in self.lines.iter().zip(layout) {
for (g, cell) in line.styled_graphemes(self.style).zip(line_layout) {
render_symbol(g, cell, buf, &self.pixel_size);
}
}
}
}
/// Returns how many cells are needed to display a full 8x8 glyphe using the given font size
fn cells_per_glyph(size: &PixelSize) -> (u16, u16) {
match size {
PixelSize::Full => (8, 8),
PixelSize::HalfHeight => (8, 4),
PixelSize::HalfWidth => (4, 8),
PixelSize::Quadrant => (4, 4),
}
}
/// Chunk the area into as many x*y cells as possible returned as a 2D iterator of `Rect`s
/// representing the rows of cells.
/// The size of each cell depends on given font size
fn layout(
area: Rect,
pixel_size: &PixelSize,
) -> impl IntoIterator<Item = impl IntoIterator<Item = Rect>> {
let (width, height) = cells_per_glyph(pixel_size);
(area.top()..area.bottom())
.step_by(height as usize)
.map(move |y| {
(area.left()..area.right())
.step_by(width as usize)
.map(move |x| {
let width = min(area.right() - x, width);
let height = min(area.bottom() - y, height);
Rect::new(x, y, width, height)
})
})
}
/// Render a single grapheme into a cell by looking up the corresponding 8x8 bitmap in the
/// `BITMAPS` array and setting the corresponding cells in the buffer.
fn render_symbol(grapheme: StyledGrapheme, area: Rect, buf: &mut Buffer, pixel_size: &PixelSize) {
buf.set_style(area, grapheme.style);
let c = grapheme.symbol.chars().next().unwrap(); // TODO: handle multi-char graphemes
if let Some(glyph) = font8x8::BASIC_FONTS.get(c) {
render_glyph(glyph, area, buf, pixel_size);
}
}
/// Get the correct unicode symbol for two vertical "pixels"
fn get_symbol_half_height(top: u8, bottom: u8) -> char {
match top {
0 => match bottom {
0 => ' ',
_ => '▄',
},
_ => match bottom {
0 => '▀',
_ => '█',
},
}
}
/// Get the correct unicode symbol for two horizontal "pixels"
fn get_symbol_half_width(left: u8, right: u8) -> char {
match left {
0 => match right {
0 => ' ',
_ => '▐',
},
_ => match right {
0 => '▌',
_ => '█',
},
}
}
/// Get the correct unicode symbol for 2x2 "pixels"
fn get_symbol_half_size(top_left: u8, top_right: u8, bottom_left: u8, bottom_right: u8) -> char {
let top_left = if top_left > 0 { 1 } else { 0 };
let top_right = if top_right > 0 { 1 } else { 0 };
let bottom_left = if bottom_left > 0 { 1 } else { 0 };
let bottom_right = if bottom_right > 0 { 1 } else { 0 };
const QUADRANT_SYMBOLS: [char; 16] = [
' ', '▘', '▝', '▀', '▖', '▌', '▞', '▛', '▗', '▚', '▐', '▜', '▄', '▙', '▟', '█',
];
QUADRANT_SYMBOLS[top_left + (top_right << 1) + (bottom_left << 2) + (bottom_right << 3)]
}
/// Render a single 8x8 glyph into a cell by setting the corresponding cells in the buffer.
fn render_glyph(glyph: [u8; 8], area: Rect, buf: &mut Buffer, pixel_size: &PixelSize) {
let (width, height) = cells_per_glyph(pixel_size);
let glyph_vertical_index = (0..glyph.len()).step_by(8 / height as usize);
let glyph_horizontal_bit_selector = (0..8).step_by(8 / width as usize);
for (row, y) in glyph_vertical_index.zip(area.top()..area.bottom()) {
for (col, x) in glyph_horizontal_bit_selector
.clone()
.zip(area.left()..area.right())
{
let cell = buf.get_mut(x, y);
let symbol_character = match pixel_size {
PixelSize::Full => match glyph[row] & (1 << col) {
0 => ' ',
_ => '█',
},
PixelSize::HalfHeight => {
let top = glyph[row] & (1 << col);
let bottom = glyph[row + 1] & (1 << col);
get_symbol_half_height(top, bottom)
}
PixelSize::HalfWidth => {
let left = glyph[row] & (1 << col);
let right = glyph[row] & (1 << (col + 1));
get_symbol_half_width(left, right)
}
PixelSize::Quadrant => {
let top_left = glyph[row] & (1 << col);
let top_right = glyph[row] & (1 << (col + 1));
let bottom_left = glyph[row + 1] & (1 << col);
let bottom_right = glyph[row + 1] & (1 << (col + 1));
get_symbol_half_size(top_left, top_right, bottom_left, bottom_right)
}
};
cell.set_char(symbol_character);
}
}
}
#[cfg(test)]
mod tests {
use ratatui::assert_buffer_eq;
use super::*;
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
#[test]
fn build() -> Result<()> {
let lines = vec![Line::from(vec!["Hello".red(), "World".blue()])];
let style = Style::new().green();
let pixel_size = PixelSize::default();
assert_eq!(
BigTextBuilder::default()
.lines(lines.clone())
.style(style)
.build()?,
BigText {
lines,
style,
pixel_size
}
);
Ok(())
}
#[test]
fn render_single_line() -> Result<()> {
let big_text = BigTextBuilder::default()
.lines(vec![Line::from("SingleLine")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 80, 8));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
" ████ ██ ███ ████ ██ ",
"██ ██ ██ ██ ",
"███ ███ █████ ███ ██ ██ ████ ██ ███ █████ ████ ",
" ███ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ",
" ███ ██ ██ ██ ██ ██ ██ ██████ ██ █ ██ ██ ██ ██████ ",
"██ ██ ██ ██ ██ █████ ██ ██ ██ ██ ██ ██ ██ ██ ",
" ████ ████ ██ ██ ██ ████ ████ ███████ ████ ██ ██ ████ ",
" █████ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_truncated() -> Result<()> {
let big_text = BigTextBuilder::default()
.lines(vec![Line::from("Truncated")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 70, 6));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"██████ █ ███",
"█ ██ █ ██ ██",
" ██ ██ ███ ██ ██ █████ ████ ████ █████ ████ ██",
" ██ ███ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ █████",
" ██ ██ ██ ██ ██ ██ ██ ██ █████ ██ ██████ ██ ██",
" ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ █ ██ ██ ██",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_multiple_lines() -> Result<()> {
let big_text = BigTextBuilder::default()
.lines(vec![Line::from("Multi"), Line::from("Lines")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 16));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"██ ██ ███ █ ██ ",
"███ ███ ██ ██ ",
"███████ ██ ██ ██ █████ ███ ",
"███████ ██ ██ ██ ██ ██ ",
"██ █ ██ ██ ██ ██ ██ ██ ",
"██ ██ ██ ██ ██ ██ █ ██ ",
"██ ██ ███ ██ ████ ██ ████ ",
" ",
"████ ██ ",
" ██ ",
" ██ ███ █████ ████ █████ ",
" ██ ██ ██ ██ ██ ██ ██ ",
" ██ █ ██ ██ ██ ██████ ████ ",
" ██ ██ ██ ██ ██ ██ ██ ",
"███████ ████ ██ ██ ████ █████ ",
" ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_widget_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.lines(vec![Line::from("Styled")])
.style(Style::new().bold())
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 48, 8));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
" ████ █ ███ ███ ",
"██ ██ ██ ██ ██ ",
"███ █████ ██ ██ ██ ████ ██ ",
" ███ ██ ██ ██ ██ ██ ██ █████ ",
" ███ ██ ██ ██ ██ ██████ ██ ██ ",
"██ ██ ██ █ █████ ██ ██ ██ ██ ",
" ████ ██ ██ ████ ████ ███ ██ ",
" █████ ",
]);
expected.set_style(Rect::new(0, 0, 48, 8), Style::new().bold());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_line_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.lines(vec![
Line::from("Red".red()),
Line::from("Green".green()),
Line::from("Blue".blue()),
])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 24));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"██████ ███ ",
" ██ ██ ██ ",
" ██ ██ ████ ██ ",
" █████ ██ ██ █████ ",
" ██ ██ ██████ ██ ██ ",
" ██ ██ ██ ██ ██ ",
"███ ██ ████ ███ ██ ",
" ",
" ████ ",
" ██ ██ ",
"██ ██ ███ ████ ████ █████ ",
"██ ███ ██ ██ ██ ██ ██ ██ ██ ",
"██ ███ ██ ██ ██████ ██████ ██ ██ ",
" ██ ██ ██ ██ ██ ██ ██ ",
" █████ ████ ████ ████ ██ ██ ",
" ",
"██████ ███ ",
" ██ ██ ██ ",
" ██ ██ ██ ██ ██ ████ ",
" █████ ██ ██ ██ ██ ██ ",
" ██ ██ ██ ██ ██ ██████ ",
" ██ ██ ██ ██ ██ ██ ",
"██████ ████ ███ ██ ████ ",
" ",
]);
expected.set_style(Rect::new(0, 0, 24, 8), Style::new().red());
expected.set_style(Rect::new(0, 8, 40, 8), Style::new().green());
expected.set_style(Rect::new(0, 16, 32, 8), Style::new().blue());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_height_single_line() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfHeight)
.lines(vec![Line::from("SingleLine")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 80, 4));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"▄█▀▀█▄ ▀▀ ▀██ ▀██▀ ▀▀ ",
"▀██▄ ▀██ ██▀▀█▄ ▄█▀▀▄█▀ ██ ▄█▀▀█▄ ██ ▀██ ██▀▀█▄ ▄█▀▀█▄ ",
"▄▄ ▀██ ██ ██ ██ ▀█▄▄██ ██ ██▀▀▀▀ ██ ▄█ ██ ██ ██ ██▀▀▀▀ ",
" ▀▀▀▀ ▀▀▀▀ ▀▀ ▀▀ ▄▄▄▄█▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀ ▀▀▀▀ ▀▀ ▀▀ ▀▀▀▀ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_height_truncated() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfHeight)
.lines(vec![Line::from("Truncated")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 70, 3));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"█▀██▀█ ▄█ ▀██",
" ██ ▀█▄█▀█▄ ██ ██ ██▀▀█▄ ▄█▀▀█▄ ▀▀▀█▄ ▀██▀▀ ▄█▀▀█▄ ▄▄▄██",
" ██ ██ ▀▀ ██ ██ ██ ██ ██ ▄▄ ▄█▀▀██ ██ ▄ ██▀▀▀▀ ██ ██",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_height_multiple_lines() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfHeight)
.lines(vec![Line::from("Multi"), Line::from("Lines")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 8));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"██▄ ▄██ ▀██ ▄█ ▀▀ ",
"███████ ██ ██ ██ ▀██▀▀ ▀██ ",
"██ ▀ ██ ██ ██ ██ ██ ▄ ██ ",
"▀▀ ▀▀ ▀▀▀ ▀▀ ▀▀▀▀ ▀▀ ▀▀▀▀ ",
"▀██▀ ▀▀ ",
" ██ ▀██ ██▀▀█▄ ▄█▀▀█▄ ▄█▀▀▀▀ ",
" ██ ▄█ ██ ██ ██ ██▀▀▀▀ ▀▀▀█▄ ",
"▀▀▀▀▀▀▀ ▀▀▀▀ ▀▀ ▀▀ ▀▀▀▀ ▀▀▀▀▀ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_height_widget_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfHeight)
.lines(vec![Line::from("Styled")])
.style(Style::new().bold())
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 48, 4));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"▄█▀▀█▄ ▄█ ▀██ ▀██ ",
"▀██▄ ▀██▀▀ ██ ██ ██ ▄█▀▀█▄ ▄▄▄██ ",
"▄▄ ▀██ ██ ▄ ▀█▄▄██ ██ ██▀▀▀▀ ██ ██ ",
" ▀▀▀▀ ▀▀ ▄▄▄▄█▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀ ▀▀ ",
]);
expected.set_style(Rect::new(0, 0, 48, 4), Style::new().bold());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_height_line_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfHeight)
.lines(vec![
Line::from("Red".red()),
Line::from("Green".green()),
Line::from("Blue".blue()),
])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 12));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"▀██▀▀█▄ ▀██ ",
" ██▄▄█▀ ▄█▀▀█▄ ▄▄▄██ ",
" ██ ▀█▄ ██▀▀▀▀ ██ ██ ",
"▀▀▀ ▀▀ ▀▀▀▀ ▀▀▀ ▀▀ ",
" ▄█▀▀█▄ ",
"██ ▀█▄█▀█▄ ▄█▀▀█▄ ▄█▀▀█▄ ██▀▀█▄ ",
"▀█▄ ▀██ ██ ▀▀ ██▀▀▀▀ ██▀▀▀▀ ██ ██ ",
" ▀▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀ ▀▀ ",
"▀██▀▀█▄ ▀██ ",
" ██▄▄█▀ ██ ██ ██ ▄█▀▀█▄ ",
" ██ ██ ██ ██ ██ ██▀▀▀▀ ",
"▀▀▀▀▀▀ ▀▀▀▀ ▀▀▀ ▀▀ ▀▀▀▀ ",
]);
expected.set_style(Rect::new(0, 0, 24, 4), Style::new().red());
expected.set_style(Rect::new(0, 4, 40, 4), Style::new().green());
expected.set_style(Rect::new(0, 8, 32, 4), Style::new().blue());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_width_single_line() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfWidth)
.lines(vec![Line::from("SingleLine")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 8));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"▐█▌ █ ▐█ ██ █ ",
"█ █ █ ▐▌ ",
"█▌ ▐█ ██▌ ▐█▐▌ █ ▐█▌ ▐▌ ▐█ ██▌ ▐█▌ ",
"▐█ █ █ █ █ █ █ █ █ ▐▌ █ █ █ █ █ ",
" ▐█ █ █ █ █ █ █ ███ ▐▌ ▌ █ █ █ ███ ",
"█ █ █ █ █ ▐██ █ █ ▐▌▐▌ █ █ █ █ ",
"▐█▌ ▐█▌ █ █ █ ▐█▌ ▐█▌ ███▌▐█▌ █ █ ▐█▌ ",
" ██▌ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_width_truncated() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfWidth)
.lines(vec![Line::from("Truncated")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 35, 6));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"███ ▐ ▐█",
"▌█▐ █ █",
" █ █▐█ █ █ ██▌ ▐█▌ ▐█▌ ▐██ ▐█▌ █",
" █ ▐█▐▌█ █ █ █ █ █ █ █ █ █ ▐██",
" █ ▐▌▐▌█ █ █ █ █ ▐██ █ ███ █ █",
" █ ▐▌ █ █ █ █ █ █ █ █ █▐ █ █ █",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_width_multiple_lines() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfWidth)
.lines(vec![Line::from("Multi"), Line::from("Lines")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 20, 16));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"█ ▐▌ ▐█ ▐ █ ",
"█▌█▌ █ █ ",
"███▌█ █ █ ▐██ ▐█ ",
"███▌█ █ █ █ █ ",
"█▐▐▌█ █ █ █ █ ",
"█ ▐▌█ █ █ █▐ █ ",
"█ ▐▌▐█▐▌▐█▌ ▐▌ ▐█▌ ",
" ",
"██ █ ",
"▐▌ ",
"▐▌ ▐█ ██▌ ▐█▌ ▐██ ",
"▐▌ █ █ █ █ █ █ ",
"▐▌ ▌ █ █ █ ███ ▐█▌ ",
"▐▌▐▌ █ █ █ █ █ ",
"███▌▐█▌ █ █ ▐█▌ ██▌ ",
" ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_width_widget_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfWidth)
.lines(vec![Line::from("Styled")])
.style(Style::new().bold())
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 24, 8));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"▐█▌ ▐ ▐█ ▐█ ",
"█ █ █ █ █ ",
"█▌ ▐██ █ █ █ ▐█▌ █ ",
"▐█ █ █ █ █ █ █ ▐██ ",
" ▐█ █ █ █ █ ███ █ █ ",
"█ █ █▐ ▐██ █ █ █ █ ",
"▐█▌ ▐▌ █ ▐█▌ ▐█▌ ▐█▐▌",
" ██▌ ",
]);
expected.set_style(Rect::new(0, 0, 24, 8), Style::new().bold());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_width_line_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::HalfWidth)
.lines(vec![
Line::from("Red".red()),
Line::from("Green".green()),
Line::from("Blue".blue()),
])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 20, 24));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"███ ▐█ ",
"▐▌▐▌ █ ",
"▐▌▐▌▐█▌ █ ",
"▐██ █ █ ▐██ ",
"▐▌█ ███ █ █ ",
"▐▌▐▌█ █ █ ",
"█▌▐▌▐█▌ ▐█▐▌ ",
" ",
" ██ ",
"▐▌▐▌ ",
"█ █▐█ ▐█▌ ▐█▌ ██▌ ",
"█ ▐█▐▌█ █ █ █ █ █ ",
"█ █▌▐▌▐▌███ ███ █ █ ",
"▐▌▐▌▐▌ █ █ █ █ ",
" ██▌██ ▐█▌ ▐█▌ █ █ ",
" ",
"███ ▐█ ",
"▐▌▐▌ █ ",
"▐▌▐▌ █ █ █ ▐█▌ ",
"▐██ █ █ █ █ █ ",
"▐▌▐▌ █ █ █ ███ ",
"▐▌▐▌ █ █ █ █ ",
"███ ▐█▌ ▐█▐▌▐█▌ ",
" ",
]);
expected.set_style(Rect::new(0, 0, 12, 8), Style::new().red());
expected.set_style(Rect::new(0, 8, 20, 8), Style::new().green());
expected.set_style(Rect::new(0, 16, 16, 8), Style::new().blue());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn check_half_size_symbols() -> Result<()> {
assert_eq!(get_symbol_half_size(0, 0, 0, 0), ' ');
assert_eq!(get_symbol_half_size(1, 0, 0, 0), '▘');
assert_eq!(get_symbol_half_size(0, 1, 0, 0), '▝');
assert_eq!(get_symbol_half_size(1, 1, 0, 0), '▀');
assert_eq!(get_symbol_half_size(0, 0, 1, 0), '▖');
assert_eq!(get_symbol_half_size(1, 0, 1, 0), '▌');
assert_eq!(get_symbol_half_size(0, 1, 1, 0), '▞');
assert_eq!(get_symbol_half_size(1, 1, 1, 0), '▛');
assert_eq!(get_symbol_half_size(0, 0, 0, 1), '▗');
assert_eq!(get_symbol_half_size(1, 0, 0, 1), '▚');
assert_eq!(get_symbol_half_size(0, 1, 0, 1), '▐');
assert_eq!(get_symbol_half_size(1, 1, 0, 1), '▜');
assert_eq!(get_symbol_half_size(0, 0, 1, 1), '▄');
assert_eq!(get_symbol_half_size(1, 0, 1, 1), '▙');
assert_eq!(get_symbol_half_size(0, 1, 1, 1), '▟');
assert_eq!(get_symbol_half_size(1, 1, 1, 1), '█');
Ok(())
}
#[test]
fn render_half_size_single_line() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::Quadrant)
.lines(vec![Line::from("SingleLine")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 40, 4));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"▟▀▙ ▀ ▝█ ▜▛ ▀ ",
"▜▙ ▝█ █▀▙ ▟▀▟▘ █ ▟▀▙ ▐▌ ▝█ █▀▙ ▟▀▙ ",
"▄▝█ █ █ █ ▜▄█ █ █▀▀ ▐▌▗▌ █ █ █ █▀▀ ",
"▝▀▘ ▝▀▘ ▀ ▀ ▄▄▛ ▝▀▘ ▝▀▘ ▀▀▀▘▝▀▘ ▀ ▀ ▝▀▘ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_size_truncated() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::Quadrant)
.lines(vec![Line::from("Truncated")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 35, 3));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"▛█▜ ▟ ▝█",
" █ ▜▟▜▖█ █ █▀▙ ▟▀▙ ▝▀▙ ▝█▀ ▟▀▙ ▗▄█",
" █ ▐▌▝▘█ █ █ █ █ ▄ ▟▀█ █▗ █▀▀ █ █",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_size_multiple_lines() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::Quadrant)
.lines(vec![Line::from("Multi"), Line::from("Lines")])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 20, 8));
big_text.render(buf.area, &mut buf);
let expected = Buffer::with_lines(vec![
"█▖▟▌ ▝█ ▟ ▀ ",
"███▌█ █ █ ▝█▀ ▝█ ",
"█▝▐▌█ █ █ █▗ █ ",
"▀ ▝▘▝▀▝▘▝▀▘ ▝▘ ▝▀▘ ",
"▜▛ ▀ ",
"▐▌ ▝█ █▀▙ ▟▀▙ ▟▀▀ ",
"▐▌▗▌ █ █ █ █▀▀ ▝▀▙ ",
"▀▀▀▘▝▀▘ ▀ ▀ ▝▀▘ ▀▀▘ ",
]);
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_size_widget_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::Quadrant)
.lines(vec![Line::from("Styled")])
.style(Style::new().bold())
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 24, 4));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"▟▀▙ ▟ ▝█ ▝█ ",
"▜▙ ▝█▀ █ █ █ ▟▀▙ ▗▄█ ",
"▄▝█ █▗ ▜▄█ █ █▀▀ █ █ ",
"▝▀▘ ▝▘ ▄▄▛ ▝▀▘ ▝▀▘ ▝▀▝▘",
]);
expected.set_style(Rect::new(0, 0, 24, 4), Style::new().bold());
assert_buffer_eq!(buf, expected);
Ok(())
}
#[test]
fn render_half_size_line_style() -> Result<()> {
let big_text = BigTextBuilder::default()
.pixel_size(PixelSize::Quadrant)
.lines(vec![
Line::from("Red".red()),
Line::from("Green".green()),
Line::from("Blue".blue()),
])
.build()?;
let mut buf = Buffer::empty(Rect::new(0, 0, 20, 12));
big_text.render(buf.area, &mut buf);
let mut expected = Buffer::with_lines(vec![
"▜▛▜▖ ▝█ ",
"▐▙▟▘▟▀▙ ▗▄█ ",
"▐▌▜▖█▀▀ █ █ ",
"▀▘▝▘▝▀▘ ▝▀▝▘ ",
"▗▛▜▖ ",
"█ ▜▟▜▖▟▀▙ ▟▀▙ █▀▙ ",
"▜▖▜▌▐▌▝▘█▀▀ █▀▀ █ █ ",
" ▀▀▘▀▀ ▝▀▘ ▝▀▘ ▀ ▀ ",
"▜▛▜▖▝█ ",
"▐▙▟▘ █ █ █ ▟▀▙ ",
"▐▌▐▌ █ █ █ █▀▀ ",
"▀▀▀ ▝▀▘ ▝▀▝▘▝▀▘ ",
]);
expected.set_style(Rect::new(0, 0, 12, 4), Style::new().red());
expected.set_style(Rect::new(0, 4, 20, 4), Style::new().green());
expected.set_style(Rect::new(0, 8, 16, 4), Style::new().blue());
assert_buffer_eq!(buf, expected);
Ok(())
}
}

34
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use palette::{IntoColor, Okhsv, Srgb};
use ratatui::{prelude::*, widgets::*};
/// A widget that renders a color swatch of RGB colors.
///
/// The widget is rendered as a rectangle with the hue changing along the x-axis from 0.0 to 360.0
/// and the value changing along the y-axis (from 1.0 to 0.0). Each pixel is rendered as a block
/// character with the top half slightly lighter than the bottom half.
pub struct RgbSwatch;
impl Widget for RgbSwatch {
fn render(self, area: Rect, buf: &mut Buffer) {
for (yi, y) in (area.top()..area.bottom()).enumerate() {
let value = area.height as f32 - yi as f32;
let value_fg = value / (area.height as f32);
let value_bg = (value - 0.5) / (area.height as f32);
for (xi, x) in (area.left()..area.right()).enumerate() {
let hue = xi as f32 * 360.0 / area.width as f32;
let fg = color_from_oklab(hue, Okhsv::max_saturation(), value_fg);
let bg = color_from_oklab(hue, Okhsv::max_saturation(), value_bg);
buf.get_mut(x, y).set_char('▀').set_fg(fg).set_bg(bg);
}
}
}
}
/// Convert a hue and value into an RGB color via the OkLab color space.
///
/// See <https://bottosson.github.io/posts/oklab/> for more details.
pub fn color_from_oklab(hue: f32, saturation: f32, value: f32) -> Color {
let color: Srgb = Okhsv::new(hue, saturation, value).into_color();
let color = color.into_format();
Color::Rgb(color.red, color.green, color.blue)
}

18
examples/demo2/main.rs Normal file
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use anyhow::Result;
pub use app::*;
pub use colors::*;
pub use root::*;
pub use term::*;
pub use theme::*;
mod app;
mod big_text;
mod colors;
mod root;
mod tabs;
mod term;
mod theme;
fn main() -> Result<()> {
App::run()
}

79
examples/demo2/root.rs Normal file
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use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
use crate::{tabs::*, AppContext, THEME};
pub struct Root<'a> {
context: &'a AppContext,
}
impl<'a> Root<'a> {
pub fn new(context: &'a AppContext) -> Self {
Root { context }
}
}
impl Widget for Root<'_> {
fn render(self, area: Rect, buf: &mut Buffer) {
Block::new().style(THEME.root).render(area, buf);
let vertical = Layout::vertical([
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
]);
let [title_bar, tab, bottom_bar] = area.split(&vertical);
self.render_title_bar(title_bar, buf);
self.render_selected_tab(tab, buf);
self.render_bottom_bar(bottom_bar, buf);
}
}
impl Root<'_> {
fn render_title_bar(&self, area: Rect, buf: &mut Buffer) {
let horizontal = Layout::horizontal([Constraint::Min(0), Constraint::Length(45)]);
let [title, tabs] = area.split(&horizontal);
Paragraph::new(Span::styled("Ratatui", THEME.app_title)).render(title, buf);
let titles = vec!["", " Recipe ", " Email ", " Traceroute ", " Weather "];
Tabs::new(titles)
.style(THEME.tabs)
.highlight_style(THEME.tabs_selected)
.select(self.context.tab_index)
.divider("")
.render(tabs, buf);
}
fn render_selected_tab(&self, area: Rect, buf: &mut Buffer) {
let row_index = self.context.row_index;
match self.context.tab_index {
0 => AboutTab::new(row_index).render(area, buf),
1 => RecipeTab::new(row_index).render(area, buf),
2 => EmailTab::new(row_index).render(area, buf),
3 => TracerouteTab::new(row_index).render(area, buf),
4 => WeatherTab::new(row_index).render(area, buf),
_ => unreachable!(),
};
}
fn render_bottom_bar(&self, area: Rect, buf: &mut Buffer) {
let keys = [
("Q/Esc", "Quit"),
("Tab", "Next Tab"),
("↑/k", "Up"),
("↓/j", "Down"),
];
let spans = keys
.iter()
.flat_map(|(key, desc)| {
let key = Span::styled(format!(" {} ", key), THEME.key_binding.key);
let desc = Span::styled(format!(" {} ", desc), THEME.key_binding.description);
[key, desc]
})
.collect_vec();
Paragraph::new(Line::from(spans))
.alignment(Alignment::Center)
.fg(Color::Indexed(236))
.bg(Color::Indexed(232))
.render(area, buf);
}
}

11
examples/demo2/tabs.rs Normal file
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mod about;
mod email;
mod recipe;
mod traceroute;
mod weather;
pub use about::AboutTab;
pub use email::EmailTab;
pub use recipe::RecipeTab;
pub use traceroute::TracerouteTab;
pub use weather::WeatherTab;

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use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
use crate::{RgbSwatch, THEME};
const RATATUI_LOGO: [&str; 32] = [
" ███ ",
" ██████ ",
" ███████ ",
" ████████ ",
" █████████ ",
" ██████████ ",
" ████████████ ",
" █████████████ ",
" █████████████ ██████",
" ███████████ ████████",
" █████ ███████████ ",
" ███ ██ee████████ ",
" █ █████████████ ",
" ████ █████████████ ",
" █████████████████ ",
" ████████████████ ",
" ████████████████ ",
" ███ ██████████ ",
" ██ █████████ ",
" █xx█ █████████ ",
" █xxxx█ ██████████ ",
" █xx█xxx█ █████████ ",
" █xx██xxxx█ ████████ ",
" █xxxxxxxxxx█ ██████████ ",
" █xxxxxxxxxxxx█ ██████████ ",
" █xxxxxxx██xxxxx█ █████████ ",
" █xxxxxxxxx██xxxxx█ ████ ███ ",
" █xxxxxxxxxxxxxxxxxx█ ██ ███ ",
"█xxxxxxxxxxxxxxxxxxxx█ █ ███ ",
"█xxxxxxxxxxxxxxxxxxxxx█ ███ ",
" █xxxxxxxxxxxxxxxxxxxxx█ ███ ",
" █xxxxxxxxxxxxxxxxxxxxx█ █ ",
];
pub struct AboutTab {
selected_row: usize,
}
impl AboutTab {
pub fn new(selected_row: usize) -> Self {
Self { selected_row }
}
}
impl Widget for AboutTab {
fn render(self, area: Rect, buf: &mut Buffer) {
RgbSwatch.render(area, buf);
let horizontal = Layout::horizontal([Constraint::Length(34), Constraint::Min(0)]);
let [description, logo] = area.split(&horizontal);
render_crate_description(description, buf);
render_logo(self.selected_row, logo, buf);
}
}
fn render_crate_description(area: Rect, buf: &mut Buffer) {
let area = area.inner(
&(Margin {
vertical: 4,
horizontal: 2,
}),
);
Clear.render(area, buf); // clear out the color swatches
Block::new().style(THEME.content).render(area, buf);
let area = area.inner(
&(Margin {
vertical: 1,
horizontal: 2,
}),
);
let text = "- cooking up terminal user interfaces -
Ratatui is a Rust crate that provides widgets (e.g. Paragraph, Table) and draws them to the \
screen efficiently every frame.";
Paragraph::new(text)
.style(THEME.description)
.block(
Block::new()
.title(" Ratatui ")
.title_alignment(Alignment::Center)
.borders(Borders::TOP)
.border_style(THEME.description_title)
.padding(Padding::new(0, 0, 0, 0)),
)
.wrap(Wrap { trim: true })
.scroll((0, 0))
.render(area, buf);
}
/// Use half block characters to render a logo based on the RATATUI_LOGO const.
///
/// The logo is rendered in three colors, one for the rat, one for the terminal, and one for the
/// rat's eye. The eye color alternates between two colors based on the selected row.
pub fn render_logo(selected_row: usize, area: Rect, buf: &mut Buffer) {
let eye_color = if selected_row % 2 == 0 {
THEME.logo.rat_eye
} else {
THEME.logo.rat_eye_alt
};
let area = area.inner(&Margin {
vertical: 0,
horizontal: 2,
});
for (y, (line1, line2)) in RATATUI_LOGO.iter().tuples().enumerate() {
for (x, (ch1, ch2)) in line1.chars().zip(line2.chars()).enumerate() {
let x = area.left() + x as u16;
let y = area.top() + y as u16;
let cell = buf.get_mut(x, y);
let rat_color = THEME.logo.rat;
let term_color = THEME.logo.term;
match (ch1, ch2) {
('█', '█') => {
cell.set_char('█');
cell.fg = rat_color;
cell.bg = rat_color;
}
('█', ' ') => {
cell.set_char('▀');
cell.fg = rat_color;
}
(' ', '█') => {
cell.set_char('▄');
cell.fg = rat_color;
}
('█', 'x') => {
cell.set_char('▀');
cell.fg = rat_color;
cell.bg = term_color;
}
('x', '█') => {
cell.set_char('▄');
cell.fg = rat_color;
cell.bg = term_color;
}
('x', 'x') => {
cell.set_char(' ');
cell.fg = term_color;
cell.bg = term_color;
}
('█', 'e') => {
cell.set_char('▀');
cell.fg = rat_color;
cell.bg = eye_color;
}
('e', '█') => {
cell.set_char('▄');
cell.fg = rat_color;
cell.bg = eye_color;
}
(_, _) => {}
};
}
}
}

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use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
use unicode_width::UnicodeWidthStr;
use crate::{RgbSwatch, THEME};
#[derive(Debug, Default)]
pub struct Email {
from: &'static str,
subject: &'static str,
body: &'static str,
}
const EMAILS: &[Email] = &[
Email {
from: "Alice <alice@example.com>",
subject: "Hello",
body: "Hi Bob,\nHow are you?\n\nAlice",
},
Email {
from: "Bob <bob@example.com>",
subject: "Re: Hello",
body: "Hi Alice,\nI'm fine, thanks!\n\nBob",
},
Email {
from: "Charlie <charlie@example.com>",
subject: "Re: Hello",
body: "Hi Alice,\nI'm fine, thanks!\n\nCharlie",
},
Email {
from: "Dave <dave@example.com>",
subject: "Re: Hello (STOP REPLYING TO ALL)",
body: "Hi Everyone,\nPlease stop replying to all.\n\nDave",
},
Email {
from: "Eve <eve@example.com>",
subject: "Re: Hello (STOP REPLYING TO ALL)",
body: "Hi Everyone,\nI'm reading all your emails.\n\nEve",
},
];
#[derive(Debug, Default)]
pub struct EmailTab {
selected_index: usize,
}
impl EmailTab {
pub fn new(selected_index: usize) -> Self {
Self {
selected_index: selected_index % EMAILS.len(),
}
}
}
impl Widget for EmailTab {
fn render(self, area: Rect, buf: &mut Buffer) {
RgbSwatch.render(area, buf);
let area = area.inner(&Margin {
vertical: 1,
horizontal: 2,
});
Clear.render(area, buf);
let vertical = Layout::vertical([Constraint::Length(5), Constraint::Min(0)]);
let [inbox, email] = area.split(&vertical);
render_inbox(self.selected_index, inbox, buf);
render_email(self.selected_index, email, buf);
}
}
fn render_inbox(selected_index: usize, area: Rect, buf: &mut Buffer) {
let vertical = Layout::vertical([Constraint::Length(1), Constraint::Min(0)]);
let [tabs, inbox] = area.split(&vertical);
let theme = THEME.email;
Tabs::new(vec![" Inbox ", " Sent ", " Drafts "])
.style(theme.tabs)
.highlight_style(theme.tabs_selected)
.select(0)
.divider("")
.render(tabs, buf);
let highlight_symbol = ">>";
let from_width = EMAILS
.iter()
.map(|e| e.from.width())
.max()
.unwrap_or_default();
let items = EMAILS
.iter()
.map(|e| {
let from = format!("{:width$}", e.from, width = from_width).into();
ListItem::new(Line::from(vec![from, " ".into(), e.subject.into()]))
})
.collect_vec();
let mut state = ListState::default().with_selected(Some(selected_index));
StatefulWidget::render(
List::new(items)
.style(theme.inbox)
.highlight_style(theme.selected_item)
.highlight_symbol(highlight_symbol),
inbox,
buf,
&mut state,
);
let mut scrollbar_state = ScrollbarState::default()
.content_length(EMAILS.len())
.position(selected_index);
Scrollbar::default()
.begin_symbol(None)
.end_symbol(None)
.track_symbol(None)
.thumb_symbol("")
.render(inbox, buf, &mut scrollbar_state);
}
fn render_email(selected_index: usize, area: Rect, buf: &mut Buffer) {
let theme = THEME.email;
let email = EMAILS.get(selected_index);
let block = Block::new()
.style(theme.body)
.padding(Padding::new(2, 2, 0, 0))
.borders(Borders::TOP)
.border_type(BorderType::Thick);
let inner = block.inner(area);
block.render(area, buf);
if let Some(email) = email {
let vertical = Layout::vertical([Constraint::Length(3), Constraint::Min(0)]);
let [headers_area, body_area] = inner.split(&vertical);
let headers = vec![
Line::from(vec![
"From: ".set_style(theme.header),
email.from.set_style(theme.header_value),
]),
Line::from(vec![
"Subject: ".set_style(theme.header),
email.subject.set_style(theme.header_value),
]),
"-".repeat(inner.width as usize).dim().into(),
];
Paragraph::new(headers)
.style(theme.body)
.render(headers_area, buf);
let body = email.body.lines().map(Line::from).collect_vec();
Paragraph::new(body)
.style(theme.body)
.render(body_area, buf);
} else {
Paragraph::new("No email selected").render(inner, buf);
}
}

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use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
use crate::{RgbSwatch, THEME};
#[derive(Debug, Default, Clone, Copy)]
struct Ingredient {
quantity: &'static str,
name: &'static str,
}
impl Ingredient {
fn height(&self) -> u16 {
self.name.lines().count() as u16
}
}
impl<'a> From<Ingredient> for Row<'a> {
fn from(i: Ingredient) -> Self {
Row::new(vec![i.quantity, i.name]).height(i.height())
}
}
// https://www.realsimple.com/food-recipes/browse-all-recipes/ratatouille
const RECIPE: &[(&str, &str)] = &[
(
"Step 1: ",
"Over medium-low heat, add the oil to a large skillet with the onion, garlic, and bay \
leaf, stirring occasionally, until the onion has softened.",
),
(
"Step 2: ",
"Add the eggplant and cook, stirring occasionally, for 8 minutes or until the eggplant \
has softened. Stir in the zucchini, red bell pepper, tomatoes, and salt, and cook over \
medium heat, stirring occasionally, for 5 to 7 minutes or until the vegetables are \
tender. Stir in the basil and few grinds of pepper to taste.",
),
];
const INGREDIENTS: &[Ingredient] = &[
Ingredient {
quantity: "4 tbsp",
name: "olive oil",
},
Ingredient {
quantity: "1",
name: "onion thinly sliced",
},
Ingredient {
quantity: "4",
name: "cloves garlic\npeeled and sliced",
},
Ingredient {
quantity: "1",
name: "small bay leaf",
},
Ingredient {
quantity: "1",
name: "small eggplant cut\ninto 1/2 inch cubes",
},
Ingredient {
quantity: "1",
name: "small zucchini halved\nlengthwise and cut\ninto thin slices",
},
Ingredient {
quantity: "1",
name: "red bell pepper cut\ninto slivers",
},
Ingredient {
quantity: "4",
name: "plum tomatoes\ncoarsely chopped",
},
Ingredient {
quantity: "1 tsp",
name: "kosher salt",
},
Ingredient {
quantity: "1/4 cup",
name: "shredded fresh basil\nleaves",
},
Ingredient {
quantity: "",
name: "freshly ground black\npepper",
},
];
#[derive(Debug)]
pub struct RecipeTab {
selected_row: usize,
}
impl RecipeTab {
pub fn new(selected_row: usize) -> Self {
Self {
selected_row: selected_row % INGREDIENTS.len(),
}
}
}
impl Widget for RecipeTab {
fn render(self, area: Rect, buf: &mut Buffer) {
RgbSwatch.render(area, buf);
let area = area.inner(&Margin {
vertical: 1,
horizontal: 2,
});
Clear.render(area, buf);
Block::new()
.title("Ratatouille Recipe".bold().white())
.title_alignment(Alignment::Center)
.style(THEME.content)
.padding(Padding::new(1, 1, 2, 1))
.render(area, buf);
let scrollbar_area = Rect {
y: area.y + 2,
height: area.height - 3,
..area
};
render_scrollbar(self.selected_row, scrollbar_area, buf);
let area = area.inner(&Margin {
horizontal: 2,
vertical: 1,
});
let [recipe, ingredients] = area.split(&Layout::horizontal([
Constraint::Length(44),
Constraint::Min(0),
]));
render_recipe(recipe, buf);
render_ingredients(self.selected_row, ingredients, buf);
}
}
fn render_recipe(area: Rect, buf: &mut Buffer) {
let lines = RECIPE
.iter()
.map(|(step, text)| Line::from(vec![step.white().bold(), text.gray()]))
.collect_vec();
Paragraph::new(lines)
.wrap(Wrap { trim: true })
.block(Block::new().padding(Padding::new(0, 1, 0, 0)))
.render(area, buf);
}
fn render_ingredients(selected_row: usize, area: Rect, buf: &mut Buffer) {
let mut state = TableState::default().with_selected(Some(selected_row));
let rows = INGREDIENTS.iter().cloned();
let theme = THEME.recipe;
StatefulWidget::render(
Table::new(rows, [Constraint::Length(7), Constraint::Length(30)])
.block(Block::new().style(theme.ingredients))
.header(Row::new(vec!["Qty", "Ingredient"]).style(theme.ingredients_header))
.highlight_style(Style::new().light_yellow()),
area,
buf,
&mut state,
);
}
fn render_scrollbar(position: usize, area: Rect, buf: &mut Buffer) {
let mut state = ScrollbarState::default()
.content_length(INGREDIENTS.len())
.viewport_content_length(6)
.position(position);
Scrollbar::new(ScrollbarOrientation::VerticalRight)
.begin_symbol(None)
.end_symbol(None)
.track_symbol(None)
.thumb_symbol("")
.render(area, buf, &mut state)
}

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use itertools::Itertools;
use ratatui::{
prelude::*,
widgets::{canvas::*, *},
};
use crate::{RgbSwatch, THEME};
#[derive(Debug)]
pub struct TracerouteTab {
selected_row: usize,
}
impl TracerouteTab {
pub fn new(selected_row: usize) -> Self {
Self {
selected_row: selected_row % HOPS.len(),
}
}
}
impl Widget for TracerouteTab {
fn render(self, area: Rect, buf: &mut Buffer) {
RgbSwatch.render(area, buf);
let area = area.inner(&Margin {
vertical: 1,
horizontal: 2,
});
Clear.render(area, buf);
Block::new().style(THEME.content).render(area, buf);
let horizontal = Layout::horizontal([Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)]);
let vertical = Layout::vertical([Constraint::Min(0), Constraint::Length(3)]);
let [left, map] = area.split(&horizontal);
let [hops, pings] = left.split(&vertical);
render_hops(self.selected_row, hops, buf);
render_ping(self.selected_row, pings, buf);
render_map(self.selected_row, map, buf);
}
}
fn render_hops(selected_row: usize, area: Rect, buf: &mut Buffer) {
let mut state = TableState::default().with_selected(Some(selected_row));
let rows = HOPS
.iter()
.map(|hop| Row::new(vec![hop.host, hop.address]))
.collect_vec();
let block = Block::default()
.title("Traceroute bad.horse".bold().white())
.title_alignment(Alignment::Center)
.padding(Padding::new(1, 1, 1, 1));
StatefulWidget::render(
Table::new(rows, [Constraint::Max(100), Constraint::Length(15)])
.header(Row::new(vec!["Host", "Address"]).set_style(THEME.traceroute.header))
.highlight_style(THEME.traceroute.selected)
.block(block),
area,
buf,
&mut state,
);
let mut scrollbar_state = ScrollbarState::default()
.content_length(HOPS.len())
.position(selected_row);
let area = Rect {
width: area.width + 1,
y: area.y + 3,
height: area.height - 4,
..area
};
Scrollbar::default()
.orientation(ScrollbarOrientation::VerticalLeft)
.begin_symbol(None)
.end_symbol(None)
.track_symbol(None)
.thumb_symbol("")
.render(area, buf, &mut scrollbar_state);
}
pub fn render_ping(progress: usize, area: Rect, buf: &mut Buffer) {
let mut data = [
8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 7, 8, 8, 8, 7,
7, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 2, 4, 6, 7, 8, 8, 8, 8, 6, 4, 2, 1, 1, 1, 1, 2, 2, 2, 3,
3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7,
];
let mid = progress % data.len();
data.rotate_left(mid);
Sparkline::default()
.block(
Block::new()
.title("Ping")
.title_alignment(Alignment::Center)
.border_type(BorderType::Thick),
)
.data(&data)
.style(THEME.traceroute.ping)
.render(area, buf);
}
fn render_map(selected_row: usize, area: Rect, buf: &mut Buffer) {
let theme = THEME.traceroute.map;
let path: Option<(&Hop, &Hop)> = HOPS.iter().tuple_windows().nth(selected_row);
let map = Map {
resolution: canvas::MapResolution::High,
color: theme.color,
};
Canvas::default()
.background_color(theme.background_color)
.block(
Block::new()
.padding(Padding::new(1, 0, 1, 0))
.style(theme.style),
)
.marker(Marker::HalfBlock)
// picked to show Australia for the demo as it's the most interesting part of the map
// (and the only part with hops ;))
.x_bounds([112.0, 155.0])
.y_bounds([-46.0, -11.0])
.paint(|context| {
context.draw(&map);
if let Some(path) = path {
context.draw(&canvas::Line::new(
path.0.location.0,
path.0.location.1,
path.1.location.0,
path.1.location.1,
theme.path,
));
context.draw(&Points {
color: theme.source,
coords: &[path.0.location], // sydney
});
context.draw(&Points {
color: theme.destination,
coords: &[path.1.location], // perth
});
}
})
.render(area, buf);
}
#[derive(Debug)]
struct Hop {
host: &'static str,
address: &'static str,
location: (f64, f64),
}
impl Hop {
const fn new(name: &'static str, address: &'static str, location: (f64, f64)) -> Self {
Self {
host: name,
address,
location,
}
}
}
const CANBERRA: (f64, f64) = (149.1, -35.3);
const SYDNEY: (f64, f64) = (151.1, -33.9);
const MELBOURNE: (f64, f64) = (144.9, -37.8);
const PERTH: (f64, f64) = (115.9, -31.9);
const DARWIN: (f64, f64) = (130.8, -12.4);
const BRISBANE: (f64, f64) = (153.0, -27.5);
const ADELAIDE: (f64, f64) = (138.6, -34.9);
// Go traceroute bad.horse some time, it's fun. these locations are made up and don't correspond
// to the actual IP addresses (which are in Toronto, Canada).
const HOPS: &[Hop] = &[
Hop::new("home", "127.0.0.1", CANBERRA),
Hop::new("bad.horse", "162.252.205.130", SYDNEY),
Hop::new("bad.horse", "162.252.205.131", MELBOURNE),
Hop::new("bad.horse", "162.252.205.132", BRISBANE),
Hop::new("bad.horse", "162.252.205.133", SYDNEY),
Hop::new("he.rides.across.the.nation", "162.252.205.134", PERTH),
Hop::new("the.thoroughbred.of.sin", "162.252.205.135", DARWIN),
Hop::new("he.got.the.application", "162.252.205.136", BRISBANE),
Hop::new("that.you.just.sent.in", "162.252.205.137", ADELAIDE),
Hop::new("it.needs.evaluation", "162.252.205.138", DARWIN),
Hop::new("so.let.the.games.begin", "162.252.205.139", PERTH),
Hop::new("a.heinous.crime", "162.252.205.140", BRISBANE),
Hop::new("a.show.of.force", "162.252.205.141", CANBERRA),
Hop::new("a.murder.would.be.nice.of.course", "162.252.205.142", PERTH),
Hop::new("bad.horse", "162.252.205.143", MELBOURNE),
Hop::new("bad.horse", "162.252.205.144", DARWIN),
Hop::new("bad.horse", "162.252.205.145", MELBOURNE),
Hop::new("he-s.bad", "162.252.205.146", PERTH),
Hop::new("the.evil.league.of.evil", "162.252.205.147", BRISBANE),
Hop::new("is.watching.so.beware", "162.252.205.148", DARWIN),
Hop::new("the.grade.that.you.receive", "162.252.205.149", PERTH),
Hop::new("will.be.your.last.we.swear", "162.252.205.150", ADELAIDE),
Hop::new("so.make.the.bad.horse.gleeful", "162.252.205.151", SYDNEY),
Hop::new("or.he-ll.make.you.his.mare", "162.252.205.152", MELBOURNE),
Hop::new("o_o", "162.252.205.153", BRISBANE),
Hop::new("you-re.saddled.up", "162.252.205.154", DARWIN),
Hop::new("there-s.no.recourse", "162.252.205.155", PERTH),
Hop::new("it-s.hi-ho.silver", "162.252.205.156", SYDNEY),
Hop::new("signed.bad.horse", "162.252.205.157", CANBERRA),
];

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use itertools::Itertools;
use palette::Okhsv;
use ratatui::{
prelude::*,
widgets::{calendar::CalendarEventStore, *},
};
use time::OffsetDateTime;
use crate::{color_from_oklab, RgbSwatch, THEME};
pub struct WeatherTab {
pub selected_row: usize,
}
impl WeatherTab {
pub fn new(selected_row: usize) -> Self {
Self { selected_row }
}
}
impl Widget for WeatherTab {
fn render(self, area: Rect, buf: &mut Buffer) {
RgbSwatch.render(area, buf);
let area = area.inner(&Margin {
vertical: 1,
horizontal: 2,
});
Clear.render(area, buf);
Block::new().style(THEME.content).render(area, buf);
let area = area.inner(&Margin {
horizontal: 2,
vertical: 1,
});
let [main, _, gauges] = area.split(&Layout::vertical([
Constraint::Min(0),
Constraint::Length(1),
Constraint::Length(1),
]));
let [calendar, charts] = main.split(&Layout::horizontal([
Constraint::Length(23),
Constraint::Min(0),
]));
let [simple, horizontal] = charts.split(&Layout::vertical([
Constraint::Length(29),
Constraint::Min(0),
]));
render_calendar(calendar, buf);
render_simple_barchart(simple, buf);
render_horizontal_barchart(horizontal, buf);
render_gauge(self.selected_row, gauges, buf);
}
}
fn render_calendar(area: Rect, buf: &mut Buffer) {
let date = OffsetDateTime::now_utc().date();
calendar::Monthly::new(date, CalendarEventStore::today(Style::new().red().bold()))
.block(Block::new().padding(Padding::new(0, 0, 2, 0)))
.show_month_header(Style::new().bold())
.show_weekdays_header(Style::new().italic())
.render(area, buf);
}
fn render_simple_barchart(area: Rect, buf: &mut Buffer) {
let data = [
("Sat", 76),
("Sun", 69),
("Mon", 65),
("Tue", 67),
("Wed", 65),
("Thu", 69),
("Fri", 73),
];
let data = data
.into_iter()
.map(|(label, value)| {
Bar::default()
.value(value)
// This doesn't actually render correctly as the text is too wide for the bar
// See https://github.com/ratatui-org/ratatui/issues/513 for more info
// (the demo GIFs hack around this by hacking the calculation in bars.rs)
.text_value(format!("{}°", value))
.style(if value > 70 {
Style::new().fg(Color::Red)
} else {
Style::new().fg(Color::Yellow)
})
.value_style(if value > 70 {
Style::new().fg(Color::Gray).bg(Color::Red).bold()
} else {
Style::new().fg(Color::DarkGray).bg(Color::Yellow).bold()
})
.label(label.into())
})
.collect_vec();
let group = BarGroup::default().bars(&data);
BarChart::default()
.data(group)
.bar_width(3)
.bar_gap(1)
.render(area, buf);
}
fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
let bg = Color::Rgb(32, 48, 96);
let data = [
Bar::default().text_value("Winter 37-51".into()).value(51),
Bar::default().text_value("Spring 40-65".into()).value(65),
Bar::default().text_value("Summer 54-77".into()).value(77),
Bar::default()
.text_value("Fall 41-71".into())
.value(71)
.value_style(Style::new().bold()), // current season
];
let group = BarGroup::default().label("GPU".into()).bars(&data);
BarChart::default()
.block(Block::new().padding(Padding::new(0, 0, 2, 0)))
.direction(Direction::Horizontal)
.data(group)
.bar_gap(1)
.bar_style(Style::new().fg(bg))
.value_style(Style::new().bg(bg).fg(Color::Gray))
.render(area, buf);
}
pub fn render_gauge(progress: usize, area: Rect, buf: &mut Buffer) {
let percent = (progress * 3).min(100) as f64;
render_line_gauge(percent, area, buf);
}
fn render_line_gauge(percent: f64, area: Rect, buf: &mut Buffer) {
// cycle color hue based on the percent for a neat effect yellow -> red
let hue = 90.0 - (percent as f32 * 0.6);
let value = Okhsv::max_value();
let fg = color_from_oklab(hue, Okhsv::max_saturation(), value);
let bg = color_from_oklab(hue, Okhsv::max_saturation(), value * 0.5);
let label = if percent < 100.0 {
format!("Downloading: {}%", percent)
} else {
"Download Complete!".into()
};
LineGauge::default()
.ratio(percent / 100.0)
.label(label)
.style(Style::new().light_blue())
.gauge_style(Style::new().fg(fg).bg(bg))
.line_set(symbols::line::THICK)
.render(area, buf);
}

71
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use std::{
io::{self, stdout, Stdout},
ops::{Deref, DerefMut},
time::Duration,
};
use anyhow::{Context, Result};
use crossterm::{
event::{self, Event},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::prelude::*;
/// A wrapper around the terminal that handles setting up and tearing down the terminal
/// and provides a helper method to read events from the terminal.
#[derive(Debug)]
pub struct Term {
terminal: Terminal<CrosstermBackend<Stdout>>,
}
impl Term {
pub fn start() -> Result<Self> {
// this size is to match the size of the terminal when running the demo
// using vhs in a 1280x640 sized window (github social preview size)
let options = TerminalOptions {
viewport: Viewport::Fixed(Rect::new(0, 0, 81, 18)),
};
let terminal = Terminal::with_options(CrosstermBackend::new(io::stdout()), options)?;
enable_raw_mode().context("enable raw mode")?;
stdout()
.execute(EnterAlternateScreen)
.context("enter alternate screen")?;
Ok(Self { terminal })
}
pub fn stop() -> Result<()> {
disable_raw_mode().context("disable raw mode")?;
stdout()
.execute(LeaveAlternateScreen)
.context("leave alternate screen")?;
Ok(())
}
pub fn next_event(timeout: Duration) -> io::Result<Option<Event>> {
if !event::poll(timeout)? {
return Ok(None);
}
let event = event::read()?;
Ok(Some(event))
}
}
impl Deref for Term {
type Target = Terminal<CrosstermBackend<Stdout>>;
fn deref(&self) -> &Self::Target {
&self.terminal
}
}
impl DerefMut for Term {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.terminal
}
}
impl Drop for Term {
fn drop(&mut self) {
let _ = Term::stop();
}
}

136
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use ratatui::prelude::*;
pub struct Theme {
pub root: Style,
pub content: Style,
pub app_title: Style,
pub tabs: Style,
pub tabs_selected: Style,
pub borders: Style,
pub description: Style,
pub description_title: Style,
pub key_binding: KeyBinding,
pub logo: Logo,
pub email: Email,
pub traceroute: Traceroute,
pub recipe: Recipe,
}
pub struct KeyBinding {
pub key: Style,
pub description: Style,
}
pub struct Logo {
pub rat: Color,
pub rat_eye: Color,
pub rat_eye_alt: Color,
pub term: Color,
}
pub struct Email {
pub tabs: Style,
pub tabs_selected: Style,
pub inbox: Style,
pub item: Style,
pub selected_item: Style,
pub header: Style,
pub header_value: Style,
pub body: Style,
}
pub struct Traceroute {
pub header: Style,
pub selected: Style,
pub ping: Style,
pub map: Map,
}
pub struct Map {
pub style: Style,
pub color: Color,
pub path: Color,
pub source: Color,
pub destination: Color,
pub background_color: Color,
}
pub struct Recipe {
pub ingredients: Style,
pub ingredients_header: Style,
}
pub const THEME: Theme = Theme {
root: Style::new().bg(DARK_BLUE),
content: Style::new().bg(DARK_BLUE).fg(LIGHT_GRAY),
app_title: Style::new()
.fg(WHITE)
.bg(DARK_BLUE)
.add_modifier(Modifier::BOLD),
tabs: Style::new().fg(MID_GRAY).bg(DARK_BLUE),
tabs_selected: Style::new()
.fg(WHITE)
.bg(DARK_BLUE)
.add_modifier(Modifier::BOLD)
.add_modifier(Modifier::REVERSED),
borders: Style::new().fg(LIGHT_GRAY),
description: Style::new().fg(LIGHT_GRAY).bg(DARK_BLUE),
description_title: Style::new().fg(LIGHT_GRAY).add_modifier(Modifier::BOLD),
logo: Logo {
rat: WHITE,
rat_eye: BLACK,
rat_eye_alt: RED,
term: BLACK,
},
key_binding: KeyBinding {
key: Style::new().fg(BLACK).bg(DARK_GRAY),
description: Style::new().fg(DARK_GRAY).bg(BLACK),
},
email: Email {
tabs: Style::new().fg(MID_GRAY).bg(DARK_BLUE),
tabs_selected: Style::new()
.fg(WHITE)
.bg(DARK_BLUE)
.add_modifier(Modifier::BOLD),
inbox: Style::new().bg(DARK_BLUE).fg(LIGHT_GRAY),
item: Style::new().fg(LIGHT_GRAY),
selected_item: Style::new().fg(LIGHT_YELLOW),
header: Style::new().add_modifier(Modifier::BOLD),
header_value: Style::new().fg(LIGHT_GRAY),
body: Style::new().bg(DARK_BLUE).fg(LIGHT_GRAY),
},
traceroute: Traceroute {
header: Style::new()
.bg(DARK_BLUE)
.add_modifier(Modifier::BOLD)
.add_modifier(Modifier::UNDERLINED),
selected: Style::new().fg(LIGHT_YELLOW),
ping: Style::new().fg(WHITE),
map: Map {
style: Style::new().bg(DARK_BLUE),
background_color: DARK_BLUE,
color: LIGHT_GRAY,
path: LIGHT_BLUE,
source: LIGHT_GREEN,
destination: LIGHT_RED,
},
},
recipe: Recipe {
ingredients: Style::new().bg(DARK_BLUE).fg(LIGHT_GRAY),
ingredients_header: Style::new()
.add_modifier(Modifier::BOLD)
.add_modifier(Modifier::UNDERLINED),
},
};
const DARK_BLUE: Color = Color::Rgb(16, 24, 48);
const LIGHT_BLUE: Color = Color::Rgb(64, 96, 192);
const LIGHT_YELLOW: Color = Color::Rgb(192, 192, 96);
const LIGHT_GREEN: Color = Color::Rgb(64, 192, 96);
const LIGHT_RED: Color = Color::Rgb(192, 96, 96);
const RED: Color = Color::Rgb(215, 0, 0);
const BLACK: Color = Color::Rgb(8, 8, 8); // not really black, often #080808
const DARK_GRAY: Color = Color::Rgb(68, 68, 68);
const MID_GRAY: Color = Color::Rgb(128, 128, 128);
const LIGHT_GRAY: Color = Color::Rgb(188, 188, 188);
const WHITE: Color = Color::Rgb(238, 238, 238); // not really white, often #eeeeee

114
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use std::io::{self, stdout};
use crossterm::{
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{prelude::*, widgets::*};
/// Example code for libr.rs
///
/// When cargo-rdme supports doc comments that import from code, this will be imported
/// rather than copied to the lib.rs file.
fn main() -> io::Result<()> {
let arg = std::env::args().nth(1).unwrap_or_default();
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
let mut terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
let mut should_quit = false;
while !should_quit {
terminal.draw(match arg.as_str() {
"hello_world" => hello_world,
"layout" => layout,
"styling" => styling,
_ => hello_world,
})?;
should_quit = handle_events()?;
}
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}
fn hello_world(frame: &mut Frame) {
frame.render_widget(
Paragraph::new("Hello World!")
.block(Block::default().title("Greeting").borders(Borders::ALL)),
frame.size(),
);
}
use crossterm::event::{self, Event, KeyCode};
fn handle_events() -> io::Result<bool> {
if event::poll(std::time::Duration::from_millis(50))? {
if let Event::Key(key) = event::read()? {
if key.kind == event::KeyEventKind::Press && key.code == KeyCode::Char('q') {
return Ok(true);
}
}
}
Ok(false)
}
fn layout(frame: &mut Frame) {
let vertical = Layout::vertical([
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
]);
let horizontal = Layout::horizontal([Constraint::Ratio(1, 2); 2]);
let [title_bar, main_area, status_bar] = frame.size().split(&vertical);
let [left, right] = main_area.split(&horizontal);
frame.render_widget(
Block::new().borders(Borders::TOP).title("Title Bar"),
title_bar,
);
frame.render_widget(
Block::new().borders(Borders::TOP).title("Status Bar"),
status_bar,
);
frame.render_widget(Block::default().borders(Borders::ALL).title("Left"), left);
frame.render_widget(Block::default().borders(Borders::ALL).title("Right"), right);
}
fn styling(frame: &mut Frame) {
let areas = Layout::vertical([
Constraint::Length(1),
Constraint::Length(1),
Constraint::Length(1),
Constraint::Length(1),
Constraint::Min(0),
])
.split(frame.size());
let span1 = Span::raw("Hello ");
let span2 = Span::styled(
"World",
Style::new()
.fg(Color::Green)
.bg(Color::White)
.add_modifier(Modifier::BOLD),
);
let span3 = "!".red().on_light_yellow().italic();
let line = Line::from(vec![span1, span2, span3]);
let text: Text = Text::from(vec![line]);
frame.render_widget(Paragraph::new(text), areas[0]);
// or using the short-hand syntax and implicit conversions
frame.render_widget(
Paragraph::new("Hello World!".red().on_white().bold()),
areas[1],
);
// to style the whole widget instead of just the text
frame.render_widget(
Paragraph::new("Hello World!").style(Style::new().red().on_white()),
areas[2],
);
// or using the short-hand syntax
frame.render_widget(Paragraph::new("Hello World!").blue().on_yellow(), areas[3]);
}

39
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# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/demo.tape`
# NOTE: Requires VHS 0.6.1 or later for Screenshot support
Output "target/docsrs.gif"
Set Theme "Aardvark Blue"
# The reason for this strange size is that the social preview image for this
# demo is 1280x64 with 80 pixels of padding on each side. We want a version
# without the padding for README.md, etc.
Set Width 640
Set Height 160
Set Padding 0
Hide
Type "cargo run --example docsrs --features crossterm"
Enter
Sleep 2s
Show
Sleep 1s
Screenshot "target/docsrs-hello.png"
Sleep 1s
Hide
Type "q"
Type "cargo run --example docsrs --features crossterm -- layout"
Enter
Sleep 2s
Show
Sleep 1s
Screenshot "target/docsrs-layout.png"
Sleep 1s
Hide
Type "q"
Type "cargo run --example docsrs --features crossterm -- styling"
Enter
Sleep 2s
Show
Sleep 1s
Screenshot "target/docsrs-styling.png"
Sleep 1s
Hide
Type "q"

473
examples/flex.rs Normal file
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use std::io::{self, stdout};
use color_eyre::{config::HookBuilder, Result};
use crossterm::{
event::{self, Event, KeyCode, KeyEventKind},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{
layout::{Constraint::*, Flex},
prelude::*,
style::palette::tailwind,
widgets::{block::Title, *},
};
use strum::{Display, EnumIter, FromRepr, IntoEnumIterator};
const EXAMPLE_DATA: &[(&str, &[Constraint])] = &[
(
"Min(u16) takes any excess space when using `Stretch` or `StretchLast`",
&[Fixed(20), Min(20), Max(20)],
),
(
"Proportional(u16) takes any excess space in all `Flex` layouts",
&[Length(20), Percentage(20), Ratio(1, 5), Proportional(1)],
),
(
"In `StretchLast`, last constraint of lowest priority takes excess space",
&[Length(20), Fixed(20), Percentage(20)],
),
("", &[Fixed(20), Percentage(20), Length(20)]),
("", &[Percentage(20), Length(20), Fixed(20)]),
("", &[Length(20), Length(15)]),
("Spacing has no effect in `SpaceAround` and `SpaceBetween`", &[Proportional(1), Proportional(1)]),
("", &[Length(20), Fixed(20)]),
(
"When not using `Flex::Stretch` or `Flex::StretchLast`,\n`Min(u16)` and `Max(u16)` collapse to their lowest values",
&[Min(20), Max(20)],
),
(
"`SpaceBetween` stretches when there's only one constraint",
&[Max(20)],
),
("", &[Min(20), Max(20), Length(20), Fixed(20)]),
("`Proportional(u16)` always fills up space in every `Flex` layout", &[Proportional(0), Proportional(0)]),
(
"`Proportional(1)` can be to scale with respect to other `Proportional(2)`",
&[Proportional(1), Proportional(2)],
),
(
"`Proportional(0)` collapses if there are other non-zero `Proportional(_)`\nconstraints. e.g. `[Proportional(0), Proportional(0), Proportional(1)]`:",
&[
Proportional(0),
Proportional(0),
Proportional(1),
],
),
];
#[derive(Default, Clone, Copy)]
struct App {
selected_tab: SelectedTab,
scroll_offset: u16,
spacing: u16,
state: AppState,
}
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
enum AppState {
#[default]
Running,
Quit,
}
#[derive(Debug, Clone, PartialEq, Eq)]
struct Example {
constraints: Vec<Constraint>,
description: String,
flex: Flex,
spacing: u16,
}
/// Tabs for the different layouts
///
/// Note: the order of the variants will determine the order of the tabs this uses several derive
/// macros from the `strum` crate to make it easier to iterate over the variants.
/// (`FromRepr`,`Display`,`EnumIter`).
#[derive(Default, Debug, Copy, Clone, PartialEq, Eq, FromRepr, Display, EnumIter)]
enum SelectedTab {
#[default]
StretchLast,
Stretch,
Start,
Center,
End,
SpaceAround,
SpaceBetween,
}
fn main() -> Result<()> {
// assuming the user changes spacing about a 100 times or so
Layout::init_cache(EXAMPLE_DATA.len() * SelectedTab::iter().len() * 100);
init_error_hooks()?;
let terminal = init_terminal()?;
// Each line in the example is a layout
// so 13 examples * 7 = 91 currently
// Plus additional layout for tabs ...
Layout::init_cache(120);
App::default().run(terminal)?;
restore_terminal()?;
Ok(())
}
impl App {
fn run(&mut self, mut terminal: Terminal<impl Backend>) -> Result<()> {
self.draw(&mut terminal)?;
while self.is_running() {
self.handle_events()?;
self.draw(&mut terminal)?;
}
Ok(())
}
fn is_running(&self) -> bool {
self.state == AppState::Running
}
fn draw(self, terminal: &mut Terminal<impl Backend>) -> io::Result<()> {
terminal.draw(|frame| frame.render_widget(self, frame.size()))?;
Ok(())
}
fn handle_events(&mut self) -> Result<()> {
use KeyCode::*;
match event::read()? {
Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
Char('q') | Esc => self.quit(),
Char('l') | Right => self.next(),
Char('h') | Left => self.previous(),
Char('j') | Down => self.down(),
Char('k') | Up => self.up(),
Char('g') | Home => self.top(),
Char('G') | End => self.bottom(),
Char('+') => self.increment_spacing(),
Char('-') => self.decrement_spacing(),
_ => (),
},
_ => {}
}
Ok(())
}
fn next(&mut self) {
self.selected_tab = self.selected_tab.next();
}
fn previous(&mut self) {
self.selected_tab = self.selected_tab.previous();
}
fn up(&mut self) {
self.scroll_offset = self.scroll_offset.saturating_sub(1)
}
fn down(&mut self) {
self.scroll_offset = self
.scroll_offset
.saturating_add(1)
.min(max_scroll_offset())
}
fn top(&mut self) {
self.scroll_offset = 0;
}
fn bottom(&mut self) {
self.scroll_offset = max_scroll_offset();
}
fn increment_spacing(&mut self) {
self.spacing = self.spacing.saturating_add(1);
}
fn decrement_spacing(&mut self) {
self.spacing = self.spacing.saturating_sub(1);
}
fn quit(&mut self) {
self.state = AppState::Quit;
}
}
// when scrolling, make sure we don't scroll past the last example
fn max_scroll_offset() -> u16 {
example_height()
- EXAMPLE_DATA
.last()
.map(|(desc, _)| get_description_height(desc) + 4)
.unwrap_or(0)
}
/// The height of all examples combined
///
/// Each may or may not have a title so we need to account for that.
fn example_height() -> u16 {
EXAMPLE_DATA
.iter()
.map(|(desc, _)| get_description_height(desc) + 4)
.sum()
}
impl Widget for App {
fn render(self, area: Rect, buf: &mut Buffer) {
let layout = Layout::vertical([Fixed(3), Fixed(1), Proportional(0)]);
let [tabs, axis, demo] = area.split(&layout);
self.tabs().render(tabs, buf);
let scroll_needed = self.render_demo(demo, buf);
let axis_width = if scroll_needed {
axis.width - 1
} else {
axis.width
};
self.axis(axis_width, self.spacing).render(axis, buf);
}
}
impl App {
fn tabs(&self) -> impl Widget {
let tab_titles = SelectedTab::iter().map(SelectedTab::to_tab_title);
let block = Block::new()
.title(Title::from("Flex Layouts ".bold()))
.title(" Use ◄ ► to change tab, ▲ ▼ to scroll, - + to change spacing ");
Tabs::new(tab_titles)
.block(block)
.highlight_style(Modifier::REVERSED)
.select(self.selected_tab as usize)
.divider(" ")
.padding("", "")
}
/// a bar like `<----- 80 px (gap: 2 px)? ----->`
fn axis(&self, width: u16, spacing: u16) -> impl Widget {
let width = width as usize;
// only show gap when spacing is not zero
let label = if spacing != 0 {
format!("{} px (gap: {} px)", width, spacing)
} else {
format!("{} px", width)
};
let bar_width = width - 2; // we want to `<` and `>` at the ends
let width_bar = format!("<{label:-^bar_width$}>");
Paragraph::new(width_bar.dark_gray()).alignment(Alignment::Center)
}
/// Render the demo content
///
/// This function renders the demo content into a separate buffer and then splices the buffer
/// into the main buffer. This is done to make it possible to handle scrolling easily.
///
/// Returns bool indicating whether scroll was needed
fn render_demo(self, area: Rect, buf: &mut Buffer) -> bool {
// render demo content into a separate buffer so all examples fit we add an extra
// area.height to make sure the last example is fully visible even when the scroll offset is
// at the max
let height = example_height();
let demo_area = Rect::new(0, 0, area.width, height);
let mut demo_buf = Buffer::empty(demo_area);
let scrollbar_needed = self.scroll_offset != 0 || height > area.height;
let content_area = if scrollbar_needed {
Rect {
width: demo_area.width - 1,
..demo_area
}
} else {
demo_area
};
let mut spacing = self.spacing;
self.selected_tab
.render(content_area, &mut demo_buf, &mut spacing);
let visible_content = demo_buf
.content
.into_iter()
.skip((area.width * self.scroll_offset) as usize)
.take(area.area() as usize);
for (i, cell) in visible_content.enumerate() {
let x = i as u16 % area.width;
let y = i as u16 / area.width;
*buf.get_mut(area.x + x, area.y + y) = cell;
}
if scrollbar_needed {
let area = area.intersection(buf.area);
let mut state = ScrollbarState::new(max_scroll_offset() as usize)
.position(self.scroll_offset as usize);
Scrollbar::new(ScrollbarOrientation::VerticalRight).render(area, buf, &mut state);
}
scrollbar_needed
}
}
impl SelectedTab {
/// Get the previous tab, if there is no previous tab return the current tab.
fn previous(&self) -> Self {
let current_index: usize = *self as usize;
let previous_index = current_index.saturating_sub(1);
Self::from_repr(previous_index).unwrap_or(*self)
}
/// Get the next tab, if there is no next tab return the current tab.
fn next(&self) -> Self {
let current_index = *self as usize;
let next_index = current_index.saturating_add(1);
Self::from_repr(next_index).unwrap_or(*self)
}
/// Convert a `SelectedTab` into a `Line` to display it by the `Tabs` widget.
fn to_tab_title(value: SelectedTab) -> Line<'static> {
use tailwind::*;
use SelectedTab::*;
let text = value.to_string();
let color = match value {
StretchLast => ORANGE.c400,
Stretch => ORANGE.c300,
Start => SKY.c400,
Center => SKY.c300,
End => SKY.c200,
SpaceAround => INDIGO.c400,
SpaceBetween => INDIGO.c300,
};
format!(" {text} ").fg(color).bg(Color::Black).into()
}
}
impl StatefulWidget for SelectedTab {
type State = u16;
fn render(self, area: Rect, buf: &mut Buffer, spacing: &mut Self::State) {
let spacing = *spacing;
match self {
SelectedTab::StretchLast => self.render_examples(area, buf, Flex::StretchLast, spacing),
SelectedTab::Stretch => self.render_examples(area, buf, Flex::Stretch, spacing),
SelectedTab::Start => self.render_examples(area, buf, Flex::Start, spacing),
SelectedTab::Center => self.render_examples(area, buf, Flex::Center, spacing),
SelectedTab::End => self.render_examples(area, buf, Flex::End, spacing),
SelectedTab::SpaceAround => self.render_examples(area, buf, Flex::SpaceAround, spacing),
SelectedTab::SpaceBetween => {
self.render_examples(area, buf, Flex::SpaceBetween, spacing)
}
}
}
}
impl SelectedTab {
fn render_examples(&self, area: Rect, buf: &mut Buffer, flex: Flex, spacing: u16) {
let heights = EXAMPLE_DATA
.iter()
.map(|(desc, _)| get_description_height(desc) + 4);
let areas = Layout::vertical(heights).flex(Flex::Start).split(area);
for (area, (description, constraints)) in areas.iter().zip(EXAMPLE_DATA.iter()) {
Example::new(constraints, description, flex, spacing).render(*area, buf);
}
}
}
impl Example {
fn new(constraints: &[Constraint], description: &str, flex: Flex, spacing: u16) -> Self {
Self {
constraints: constraints.into(),
description: description.into(),
flex,
spacing,
}
}
}
impl Widget for Example {
fn render(self, area: Rect, buf: &mut Buffer) {
let title_height = get_description_height(&self.description);
let layout = Layout::vertical([Fixed(title_height), Proportional(0)]);
let [title, illustrations] = area.split(&layout);
let blocks = Layout::horizontal(&self.constraints)
.flex(self.flex)
.spacing(self.spacing)
.split(illustrations);
if !self.description.is_empty() {
Paragraph::new(
self.description
.split('\n')
.map(|s| format!("// {}", s).italic().fg(tailwind::SLATE.c400))
.map(Line::from)
.collect::<Vec<Line>>(),
)
.render(title, buf);
}
for (block, constraint) in blocks.iter().zip(&self.constraints) {
self.illustration(*constraint, block.width)
.render(*block, buf);
}
}
}
impl Example {
fn illustration(&self, constraint: Constraint, width: u16) -> Paragraph {
let main_color = color_for_constraint(constraint);
let fg_color = Color::White;
let title = format!("{constraint}");
let content = format!("{width} px");
let text = format!("{title}\n{content}");
let block = Block::bordered()
.border_set(symbols::border::QUADRANT_OUTSIDE)
.border_style(Style::reset().fg(main_color).reversed())
.style(Style::default().fg(fg_color).bg(main_color));
Paragraph::new(text)
.alignment(Alignment::Center)
.block(block)
}
}
fn color_for_constraint(constraint: Constraint) -> Color {
use tailwind::*;
match constraint {
Constraint::Fixed(_) => RED.c900,
Constraint::Min(_) => BLUE.c900,
Constraint::Max(_) => BLUE.c800,
Constraint::Length(_) => SLATE.c700,
Constraint::Percentage(_) => SLATE.c800,
Constraint::Ratio(_, _) => SLATE.c900,
Constraint::Proportional(_) => SLATE.c950,
}
}
fn init_error_hooks() -> Result<()> {
let (panic, error) = HookBuilder::default().into_hooks();
let panic = panic.into_panic_hook();
let error = error.into_eyre_hook();
color_eyre::eyre::set_hook(Box::new(move |e| {
let _ = restore_terminal();
error(e)
}))?;
std::panic::set_hook(Box::new(move |info| {
let _ = restore_terminal();
panic(info)
}));
Ok(())
}
fn init_terminal() -> Result<Terminal<impl Backend>> {
enable_raw_mode()?;
stdout().execute(EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout());
let terminal = Terminal::new(backend)?;
Ok(terminal)
}
fn restore_terminal() -> Result<()> {
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}
fn get_description_height(s: &str) -> u16 {
if s.is_empty() {
0
} else {
s.split('\n').count() as u16
}
}

17
examples/flex.tape Normal file
View File

@@ -0,0 +1,17 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/layout.tape`
Output "target/flex.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1410
Hide
Type "cargo run --example=flex --features=crossterm"
Enter
Sleep 2s
Show
Sleep 2s
Right @5s 7
Sleep 2s
Left 7
Sleep 2s
Down @200ms 50

View File

@@ -1,18 +1,31 @@
#[allow(dead_code)]
mod util;
use crate::util::event::{Event, Events};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout},
style::{Color, Modifier, Style},
widgets::{Block, Borders, Gauge},
Terminal,
use std::{
io::{self, stdout, Stdout},
time::Duration,
};
use anyhow::Result;
use crossterm::{
event::{self, Event, KeyCode, KeyEventKind},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{
prelude::*,
widgets::{block::Title, *},
};
fn main() -> Result<()> {
App::run()
}
struct App {
term: Term,
should_quit: bool,
state: AppState,
}
#[derive(Debug, Default, Clone, Copy)]
struct AppState {
progress1: u16,
progress2: u16,
progress3: f64,
@@ -20,107 +33,142 @@ struct App {
}
impl App {
fn new() -> App {
App {
progress1: 0,
progress2: 0,
progress3: 0.0,
progress4: 0,
fn run() -> Result<()> {
// run at ~10 fps minus the time it takes to draw
let timeout = Duration::from_secs_f32(1.0 / 10.0);
let mut app = Self::start()?;
while !app.should_quit {
app.update();
app.draw()?;
app.handle_events(timeout)?;
}
app.stop()?;
Ok(())
}
fn start() -> Result<Self> {
Ok(App {
term: Term::start()?,
should_quit: false,
state: AppState {
progress1: 0,
progress2: 0,
progress3: 0.0,
progress4: 0,
},
})
}
fn stop(&mut self) -> Result<()> {
Term::stop()?;
Ok(())
}
fn update(&mut self) {
self.progress1 += 5;
if self.progress1 > 100 {
self.progress1 = 0;
}
self.progress2 += 10;
if self.progress2 > 100 {
self.progress2 = 0;
}
self.progress3 += 0.001;
if self.progress3 > 1.0 {
self.progress3 = 0.0;
}
self.progress4 += 3;
if self.progress4 > 100 {
self.progress4 = 0;
}
self.state.progress1 = (self.state.progress1 + 4).min(100);
self.state.progress2 = (self.state.progress2 + 3).min(100);
self.state.progress3 = (self.state.progress3 + 0.02).min(1.0);
self.state.progress4 = (self.state.progress4 + 1).min(100);
}
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let events = Events::new();
let mut app = App::new();
loop {
terminal.draw(|f| {
let chunks = Layout::default()
.direction(Direction::Vertical)
.margin(2)
.constraints(
[
Constraint::Percentage(25),
Constraint::Percentage(25),
Constraint::Percentage(25),
Constraint::Percentage(25),
]
.as_ref(),
)
.split(f.size());
let gauge = Gauge::default()
.block(Block::default().title("Gauge1").borders(Borders::ALL))
.gauge_style(Style::default().fg(Color::Yellow))
.percent(app.progress1);
f.render_widget(gauge, chunks[0]);
let label = format!("{}/100", app.progress2);
let gauge = Gauge::default()
.block(Block::default().title("Gauge2").borders(Borders::ALL))
.gauge_style(Style::default().fg(Color::Magenta).bg(Color::Green))
.percent(app.progress2)
.label(label);
f.render_widget(gauge, chunks[1]);
let gauge = Gauge::default()
.block(Block::default().title("Gauge3").borders(Borders::ALL))
.gauge_style(Style::default().fg(Color::Yellow))
.ratio(app.progress3);
f.render_widget(gauge, chunks[2]);
let label = format!("{}/100", app.progress2);
let gauge = Gauge::default()
.block(Block::default().title("Gauge4"))
.gauge_style(
Style::default()
.fg(Color::Cyan)
.add_modifier(Modifier::ITALIC),
)
.percent(app.progress4)
.label(label);
f.render_widget(gauge, chunks[3]);
fn draw(&mut self) -> Result<()> {
self.term.draw(|frame| {
let state = self.state;
let layout = Layout::vertical([Constraint::Ratio(1, 4); 4]).split(frame.size());
Self::render_gauge1(state.progress1, frame, layout[0]);
Self::render_gauge2(state.progress2, frame, layout[1]);
Self::render_gauge3(state.progress3, frame, layout[2]);
Self::render_gauge4(state.progress4, frame, layout[3]);
})?;
Ok(())
}
match events.next()? {
Event::Input(input) => {
if input == Key::Char('q') {
break;
fn handle_events(&mut self, timeout: Duration) -> io::Result<()> {
if event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
if let KeyCode::Char('q') = key.code {
self.should_quit = true;
}
}
}
Event::Tick => {
app.update();
}
}
Ok(())
}
Ok(())
fn render_gauge1(progress: u16, frame: &mut Frame, area: Rect) {
let title = Self::title_block("Gauge with percentage progress");
let gauge = Gauge::default()
.block(title)
.gauge_style(Style::new().light_red())
.percent(progress);
frame.render_widget(gauge, area);
}
fn render_gauge2(progress: u16, frame: &mut Frame, area: Rect) {
let title = Self::title_block("Gauge with percentage progress and custom label");
let label = format!("{}/100", progress);
let gauge = Gauge::default()
.block(title)
.gauge_style(Style::new().blue().on_light_blue())
.percent(progress)
.label(label);
frame.render_widget(gauge, area);
}
fn render_gauge3(progress: f64, frame: &mut Frame, area: Rect) {
let title =
Self::title_block("Gauge with ratio progress, custom label with style, and unicode");
let label = Span::styled(
format!("{:.2}%", progress * 100.0),
Style::new().red().italic().bold(),
);
let gauge = Gauge::default()
.block(title)
.gauge_style(Style::default().fg(Color::Yellow))
.ratio(progress)
.label(label)
.use_unicode(true);
frame.render_widget(gauge, area);
}
fn render_gauge4(progress: u16, frame: &mut Frame, area: Rect) {
let title = Self::title_block("Gauge with percentage progress and label");
let label = format!("{}/100", progress);
let gauge = Gauge::default()
.block(title)
.gauge_style(Style::new().green().italic())
.percent(progress)
.label(label);
frame.render_widget(gauge, area);
}
fn title_block(title: &str) -> Block {
let title = Title::from(title).alignment(Alignment::Center);
Block::default().title(title).borders(Borders::TOP)
}
}
struct Term {
terminal: Terminal<CrosstermBackend<Stdout>>,
}
impl Term {
pub fn start() -> io::Result<Term> {
stdout().execute(EnterAlternateScreen)?;
enable_raw_mode()?;
let terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
Ok(Self { terminal })
}
pub fn stop() -> io::Result<()> {
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
Ok(())
}
fn draw(&mut self, frame: impl FnOnce(&mut Frame)) -> Result<()> {
self.terminal.draw(frame)?;
Ok(())
}
}

12
examples/gauge.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/gauge.tape`
Output "target/gauge.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 550
Hide
Type "cargo run --example=gauge --features=crossterm"
Enter
Sleep 1s
Show
Sleep 20s

41
examples/generate.bash Executable file
View File

@@ -0,0 +1,41 @@
#!/bin/bash
# This script is used to generate the images for the examples README
# It requires the following tools:
# - cargo: https://doc.rust-lang.org/cargo/getting-started/installation.html
# - gh: https://github.com/cli/cli
# - git: https://git-scm.com/
# - vhs: https://github.com/charmbracelet/vhs - currently this needs to be installed from the
# main branch, as the latest release doesn't support the theme we use or the Screenshot
# command. Install using `go install github.com/charmbracelet/vhs@main``
# - go: https://golang.org/doc/install
# - ttyd: https://github.com/tsl0922/ttyd
# Exit on error. Append "|| true" if you expect an error.
set -o errexit
# Exit on error inside any functions or subshells.
set -o errtrace
# Do not allow use of undefined vars. Use ${VAR:-} to use an undefined VAR
set -o nounset
# Catch the error in case mysqldump fails (but gzip succeeds) in `mysqldump |gzip`
set -o pipefail
# Turn on traces, useful while debugging but commented out by default
# set -o xtrace
# ensure that running each example doesn't have to wait for the build
cargo build --examples --features=crossterm,all-widgets
for tape in examples/*.tape; do
gif=${tape/examples\//}
gif=${gif/.tape/.gif}
~/go/bin/vhs $tape --quiet
# this can be pasted into the examples README.md
echo "[${gif}]: https://github.com/ratatui-org/ratatui/blob/images/examples/${gif}?raw=true"
done
git switch images
git pull --rebase upstream images
cp target/*.gif examples/
git add examples/*.gif
git commit -m 'docs(examples): update images'
gh pr create
git sw -

80
examples/hello_world.rs Normal file
View File

@@ -0,0 +1,80 @@
use std::{
io::{self, Stdout},
time::Duration,
};
use anyhow::{Context, Result};
use crossterm::{
event::{self, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::*};
/// This is a bare minimum example. There are many approaches to running an application loop, so
/// this is not meant to be prescriptive. It is only meant to demonstrate the basic setup and
/// teardown of a terminal application.
///
/// A more robust application would probably want to handle errors and ensure that the terminal is
/// restored to a sane state before exiting. This example does not do that. It also does not handle
/// events or update the application state. It just draws a greeting and exits when the user
/// presses 'q'.
fn main() -> Result<()> {
let mut terminal = setup_terminal().context("setup failed")?;
run(&mut terminal).context("app loop failed")?;
restore_terminal(&mut terminal).context("restore terminal failed")?;
Ok(())
}
/// Setup the terminal. This is where you would enable raw mode, enter the alternate screen, and
/// hide the cursor. This example does not handle errors. A more robust application would probably
/// want to handle errors and ensure that the terminal is restored to a sane state before exiting.
fn setup_terminal() -> Result<Terminal<CrosstermBackend<Stdout>>> {
let mut stdout = io::stdout();
enable_raw_mode().context("failed to enable raw mode")?;
execute!(stdout, EnterAlternateScreen).context("unable to enter alternate screen")?;
Terminal::new(CrosstermBackend::new(stdout)).context("creating terminal failed")
}
/// Restore the terminal. This is where you disable raw mode, leave the alternate screen, and show
/// the cursor.
fn restore_terminal(terminal: &mut Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
disable_raw_mode().context("failed to disable raw mode")?;
execute!(terminal.backend_mut(), LeaveAlternateScreen)
.context("unable to switch to main screen")?;
terminal.show_cursor().context("unable to show cursor")
}
/// Run the application loop. This is where you would handle events and update the application
/// state. This example exits when the user presses 'q'. Other styles of application loops are
/// possible, for example, you could have multiple application states and switch between them based
/// on events, or you could have a single application state and update it based on events.
fn run(terminal: &mut Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
loop {
terminal.draw(crate::render_app)?;
if should_quit()? {
break;
}
}
Ok(())
}
/// Render the application. This is where you would draw the application UI. This example just
/// draws a greeting.
fn render_app(frame: &mut Frame) {
let greeting = Paragraph::new("Hello World! (press 'q' to quit)");
frame.render_widget(greeting, frame.size());
}
/// Check if the user has pressed 'q'. This is where you would handle events. This example just
/// checks if the user has pressed 'q' and returns true if they have. It does not handle any other
/// events. There is a 250ms timeout on the event poll so that the application can exit in a timely
/// manner, and to ensure that the terminal is rendered at least once every 250ms.
fn should_quit() -> Result<bool> {
if event::poll(Duration::from_millis(250)).context("event poll failed")? {
if let Event::Key(key) = event::read().context("event read failed")? {
return Ok(KeyCode::Char('q') == key.code);
}
}
Ok(false)
}

12
examples/hello_world.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/hello_world.tape`
Output "target/hello_world.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 200
Hide
Type "cargo run --example=hello_world --features=crossterm"
Enter
Sleep 1s
Show
Sleep 5s

276
examples/inline.rs Normal file
View File

@@ -0,0 +1,276 @@
use std::{
collections::{BTreeMap, VecDeque},
error::Error,
io,
sync::mpsc,
thread,
time::{Duration, Instant},
};
use rand::distributions::{Distribution, Uniform};
use ratatui::{prelude::*, widgets::*};
const NUM_DOWNLOADS: usize = 10;
type DownloadId = usize;
type WorkerId = usize;
enum Event {
Input(crossterm::event::KeyEvent),
Tick,
Resize,
DownloadUpdate(WorkerId, DownloadId, f64),
DownloadDone(WorkerId, DownloadId),
}
struct Downloads {
pending: VecDeque<Download>,
in_progress: BTreeMap<WorkerId, DownloadInProgress>,
}
impl Downloads {
fn next(&mut self, worker_id: WorkerId) -> Option<Download> {
match self.pending.pop_front() {
Some(d) => {
self.in_progress.insert(
worker_id,
DownloadInProgress {
id: d.id,
started_at: Instant::now(),
progress: 0.0,
},
);
Some(d)
}
None => None,
}
}
}
struct DownloadInProgress {
id: DownloadId,
started_at: Instant,
progress: f64,
}
struct Download {
id: DownloadId,
size: usize,
}
struct Worker {
id: WorkerId,
tx: mpsc::Sender<Download>,
}
fn main() -> Result<(), Box<dyn Error>> {
crossterm::terminal::enable_raw_mode()?;
let stdout = io::stdout();
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::with_options(
backend,
TerminalOptions {
viewport: Viewport::Inline(8),
},
)?;
let (tx, rx) = mpsc::channel();
input_handling(tx.clone());
let workers = workers(tx);
let mut downloads = downloads();
for w in &workers {
let d = downloads.next(w.id).unwrap();
w.tx.send(d).unwrap();
}
run_app(&mut terminal, workers, downloads, rx)?;
crossterm::terminal::disable_raw_mode()?;
terminal.clear()?;
Ok(())
}
fn input_handling(tx: mpsc::Sender<Event>) {
let tick_rate = Duration::from_millis(200);
thread::spawn(move || {
let mut last_tick = Instant::now();
loop {
// poll for tick rate duration, if no events, sent tick event.
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if crossterm::event::poll(timeout).unwrap() {
match crossterm::event::read().unwrap() {
crossterm::event::Event::Key(key) => tx.send(Event::Input(key)).unwrap(),
crossterm::event::Event::Resize(_, _) => tx.send(Event::Resize).unwrap(),
_ => {}
};
}
if last_tick.elapsed() >= tick_rate {
tx.send(Event::Tick).unwrap();
last_tick = Instant::now();
}
}
});
}
fn workers(tx: mpsc::Sender<Event>) -> Vec<Worker> {
(0..4)
.map(|id| {
let (worker_tx, worker_rx) = mpsc::channel::<Download>();
let tx = tx.clone();
thread::spawn(move || {
while let Ok(download) = worker_rx.recv() {
let mut remaining = download.size;
while remaining > 0 {
let wait = (remaining as u64).min(10);
thread::sleep(Duration::from_millis(wait * 10));
remaining = remaining.saturating_sub(10);
let progress = (download.size - remaining) * 100 / download.size;
tx.send(Event::DownloadUpdate(id, download.id, progress as f64))
.unwrap();
}
tx.send(Event::DownloadDone(id, download.id)).unwrap();
}
});
Worker { id, tx: worker_tx }
})
.collect()
}
fn downloads() -> Downloads {
let distribution = Uniform::new(0, 1000);
let mut rng = rand::thread_rng();
let pending = (0..NUM_DOWNLOADS)
.map(|id| {
let size = distribution.sample(&mut rng);
Download { id, size }
})
.collect();
Downloads {
pending,
in_progress: BTreeMap::new(),
}
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
workers: Vec<Worker>,
mut downloads: Downloads,
rx: mpsc::Receiver<Event>,
) -> Result<(), Box<dyn Error>> {
let mut redraw = true;
loop {
if redraw {
terminal.draw(|f| ui(f, &downloads))?;
}
redraw = true;
match rx.recv()? {
Event::Input(event) => {
if event.code == crossterm::event::KeyCode::Char('q') {
break;
}
}
Event::Resize => {
terminal.autoresize()?;
}
Event::Tick => {}
Event::DownloadUpdate(worker_id, _download_id, progress) => {
let download = downloads.in_progress.get_mut(&worker_id).unwrap();
download.progress = progress;
redraw = false
}
Event::DownloadDone(worker_id, download_id) => {
let download = downloads.in_progress.remove(&worker_id).unwrap();
terminal.insert_before(1, |buf| {
Paragraph::new(Line::from(vec![
Span::from("Finished "),
Span::styled(
format!("download {download_id}"),
Style::default().add_modifier(Modifier::BOLD),
),
Span::from(format!(
" in {}ms",
download.started_at.elapsed().as_millis()
)),
]))
.render(buf.area, buf);
})?;
match downloads.next(worker_id) {
Some(d) => workers[worker_id].tx.send(d).unwrap(),
None => {
if downloads.in_progress.is_empty() {
terminal.insert_before(1, |buf| {
Paragraph::new("Done !").render(buf.area, buf);
})?;
break;
}
}
};
}
};
}
Ok(())
}
fn ui(f: &mut Frame, downloads: &Downloads) {
let area = f.size();
let block = Block::default().title(block::Title::from("Progress").alignment(Alignment::Center));
f.render_widget(block, area);
let vertical = Layout::vertical([Constraint::Length(2), Constraint::Length(4)]).margin(1);
let horizontal = Layout::horizontal([Constraint::Percentage(20), Constraint::Percentage(80)]);
let [progress_area, main] = area.split(&vertical);
let [list_area, gauge_area] = main.split(&horizontal);
// total progress
let done = NUM_DOWNLOADS - downloads.pending.len() - downloads.in_progress.len();
let progress = LineGauge::default()
.gauge_style(Style::default().fg(Color::Blue))
.label(format!("{done}/{NUM_DOWNLOADS}"))
.ratio(done as f64 / NUM_DOWNLOADS as f64);
f.render_widget(progress, progress_area);
// in progress downloads
let items: Vec<ListItem> = downloads
.in_progress
.values()
.map(|download| {
ListItem::new(Line::from(vec![
Span::raw(symbols::DOT),
Span::styled(
format!(" download {:>2}", download.id),
Style::default()
.fg(Color::LightGreen)
.add_modifier(Modifier::BOLD),
),
Span::raw(format!(
" ({}ms)",
download.started_at.elapsed().as_millis()
)),
]))
})
.collect();
let list = List::new(items);
f.render_widget(list, list_area);
for (i, (_, download)) in downloads.in_progress.iter().enumerate() {
let gauge = Gauge::default()
.gauge_style(Style::default().fg(Color::Yellow))
.ratio(download.progress / 100.0);
if gauge_area.top().saturating_add(i as u16) > area.bottom() {
continue;
}
f.render_widget(
gauge,
Rect {
x: gauge_area.left(),
y: gauge_area.top().saturating_add(i as u16),
width: gauge_area.width,
height: 1,
},
);
}
}

9
examples/inline.tape Normal file
View File

@@ -0,0 +1,9 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/inline.tape`
Output "target/inline.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 600
Type "cargo run --example=inline --features=crossterm"
Enter
Sleep 20s

View File

@@ -1,52 +1,210 @@
#[allow(dead_code)]
mod util;
use crate::util::event::{Event, Events};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Direction, Layout},
widgets::{Block, Borders},
Terminal,
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use itertools::Itertools;
use ratatui::{layout::Constraint::*, prelude::*, widgets::*};
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let events = Events::new();
// create app and run it
let res = run_app(&mut terminal);
loop {
terminal.draw(|f| {
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints(
[
Constraint::Percentage(10),
Constraint::Percentage(80),
Constraint::Percentage(10),
]
.as_ref(),
)
.split(f.size());
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
let block = Block::default().title("Block").borders(Borders::ALL);
f.render_widget(block, chunks[0]);
let block = Block::default().title("Block 2").borders(Borders::ALL);
f.render_widget(block, chunks[2]);
})?;
if let Event::Input(input) = events.next()? {
if let Key::Char('q') = input {
break;
}
}
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(terminal: &mut Terminal<B>) -> io::Result<()> {
loop {
terminal.draw(ui)?;
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(());
}
}
}
}
fn ui(frame: &mut Frame) {
let vertical = Layout::vertical([
Length(4), // text
Length(50), // examples
Min(0), // fills remaining space
]);
let [text_area, examples_area, _] = frame.size().split(&vertical);
// title
frame.render_widget(
Paragraph::new(vec![
Line::from("Horizontal Layout Example. Press q to quit".dark_gray())
.alignment(Alignment::Center),
Line::from("Each line has 2 constraints, plus Min(0) to fill the remaining space."),
Line::from("E.g. the second line of the Len/Min box is [Length(2), Min(2), Min(0)]"),
Line::from("Note: constraint labels that don't fit are truncated"),
]),
text_area,
);
let example_rows = Layout::vertical([
Length(9),
Length(9),
Length(9),
Length(9),
Length(9),
Min(0), // fills remaining space
])
.split(examples_area);
let example_areas = example_rows
.iter()
.flat_map(|area| {
Layout::horizontal([
Constraint::Length(14),
Constraint::Length(14),
Constraint::Length(14),
Constraint::Length(14),
Constraint::Length(14),
Constraint::Min(0), // fills remaining space
])
.split(*area)
.iter()
.copied()
.take(5) // ignore Min(0)
.collect_vec()
})
.collect_vec();
// the examples are a cartesian product of the following constraints
// e.g. Len/Len, Len/Min, Len/Max, Len/Perc, Len/Ratio, Min/Len, Min/Min, ...
let examples = [
(
"Len",
vec![
Length(0),
Length(2),
Length(3),
Length(6),
Length(10),
Length(15),
],
),
(
"Min",
vec![Min(0), Min(2), Min(3), Min(6), Min(10), Min(15)],
),
(
"Max",
vec![Max(0), Max(2), Max(3), Max(6), Max(10), Max(15)],
),
(
"Perc",
vec![
Percentage(0),
Percentage(25),
Percentage(50),
Percentage(75),
Percentage(100),
Percentage(150),
],
),
(
"Ratio",
vec![
Ratio(0, 4),
Ratio(1, 4),
Ratio(2, 4),
Ratio(3, 4),
Ratio(4, 4),
Ratio(6, 4),
],
),
];
for (i, (a, b)) in examples
.iter()
.cartesian_product(examples.iter())
.enumerate()
{
let (name_a, examples_a) = a;
let (name_b, examples_b) = b;
let constraints = examples_a
.iter()
.copied()
.zip(examples_b.iter().copied())
.collect_vec();
render_example_combination(
frame,
example_areas[i],
&format!("{name_a}/{name_b}"),
constraints,
);
}
}
/// Renders a single example box
fn render_example_combination(
frame: &mut Frame,
area: Rect,
title: &str,
constraints: Vec<(Constraint, Constraint)>,
) {
let block = Block::default()
.title(title.gray())
.style(Style::reset())
.borders(Borders::ALL)
.border_style(Style::default().fg(Color::DarkGray));
let inner = block.inner(area);
frame.render_widget(block, area);
let layout = Layout::vertical(vec![Length(1); constraints.len() + 1]).split(inner);
for (i, (a, b)) in constraints.iter().enumerate() {
render_single_example(frame, layout[i], vec![*a, *b, Min(0)]);
}
// This is to make it easy to visually see the alignment of the examples
// with the constraints.
frame.render_widget(Paragraph::new("123456789012"), layout[6]);
}
/// Renders a single example line
fn render_single_example(frame: &mut Frame, area: Rect, constraints: Vec<Constraint>) {
let red = Paragraph::new(constraint_label(constraints[0])).on_red();
let blue = Paragraph::new(constraint_label(constraints[1])).on_blue();
let green = Paragraph::new("·".repeat(12)).on_green();
let horizontal = Layout::horizontal(constraints);
let [r, b, g] = area.split(&horizontal);
frame.render_widget(red, r);
frame.render_widget(blue, b);
frame.render_widget(green, g);
}
fn constraint_label(constraint: Constraint) -> String {
match constraint {
Length(n) => format!("{n}"),
Min(n) => format!("{n}"),
Max(n) => format!("{n}"),
Percentage(n) => format!("{n}"),
Proportional(n) => format!("{n}"),
Fixed(n) => format!("{n}"),
Ratio(a, b) => format!("{a}:{b}"),
}
}

12
examples/layout.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/layout.tape`
Output "target/layout.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1410
Hide
Type "cargo run --example=layout --features=crossterm"
Enter
Sleep 1s
Show
Sleep 2s

View File

@@ -1,21 +1,73 @@
#[allow(dead_code)]
mod util;
use crate::util::{
event::{Event, Events},
StatefulList,
};
use std::{error::Error, io};
use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
use tui::{
backend::TermionBackend,
layout::{Constraint, Corner, Direction, Layout},
style::{Color, Modifier, Style},
text::{Span, Spans},
widgets::{Block, Borders, List, ListItem},
Terminal,
use std::{
error::Error,
io,
time::{Duration, Instant},
};
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::*};
struct StatefulList<T> {
state: ListState,
items: Vec<T>,
last_selected: Option<usize>,
}
impl<T> StatefulList<T> {
fn with_items(items: Vec<T>) -> StatefulList<T> {
StatefulList {
state: ListState::default(),
items,
last_selected: None,
}
}
fn next(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i >= self.items.len() - 1 {
0
} else {
i + 1
}
}
None => self.last_selected.unwrap_or(0),
};
self.state.select(Some(i));
}
fn previous(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i == 0 {
self.items.len() - 1
} else {
i - 1
}
}
None => self.last_selected.unwrap_or(0),
};
self.state.select(Some(i));
}
fn unselect(&mut self) {
let offset = self.state.offset();
self.last_selected = self.state.selected();
self.state.select(None);
*self.state.offset_mut() = offset;
}
}
/// This struct holds the current state of the app. In particular, it has the `items` field which is
/// a wrapper around `ListState`. Keeping track of the items state let us render the associated
/// widget with its state and have access to features such as natural scrolling.
///
/// Check the event handling at the bottom to see how to change the state on incoming events.
/// Check the drawing logic for items on how to specify the highlighting style for selected items.
struct App<'a> {
items: StatefulList<(&'a str, usize)>,
events: Vec<(&'a str, &'a str)>,
@@ -82,112 +134,148 @@ impl<'a> App<'a> {
}
}
fn advance(&mut self) {
let event = self.events.pop().unwrap();
self.events.insert(0, event);
/// Rotate through the event list.
/// This only exists to simulate some kind of "progress"
fn on_tick(&mut self) {
let event = self.events.remove(0);
self.events.push(event);
}
}
fn main() -> Result<(), Box<dyn Error>> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
// setup terminal
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let events = Events::new();
// create app and run it
let tick_rate = Duration::from_millis(250);
let app = App::new();
let res = run_app(&mut terminal, app, tick_rate);
// App
let mut app = App::new();
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
loop {
terminal.draw(|f| {
let chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.split(f.size());
let items: Vec<ListItem> = app
.items
.items
.iter()
.map(|i| {
let mut lines = vec![Spans::from(i.0)];
for _ in 0..i.1 {
lines.push(Spans::from(Span::styled(
"Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
Style::default().add_modifier(Modifier::ITALIC),
)));
}
ListItem::new(lines).style(Style::default().fg(Color::Black).bg(Color::White))
})
.collect();
let items = List::new(items)
.block(Block::default().borders(Borders::ALL).title("List"))
.highlight_style(
Style::default()
.bg(Color::LightGreen)
.add_modifier(Modifier::BOLD),
)
.highlight_symbol(">> ");
f.render_stateful_widget(items, chunks[0], &mut app.items.state);
let events: Vec<ListItem> = app
.events
.iter()
.map(|&(evt, level)| {
let s = match level {
"CRITICAL" => Style::default().fg(Color::Red),
"ERROR" => Style::default().fg(Color::Magenta),
"WARNING" => Style::default().fg(Color::Yellow),
"INFO" => Style::default().fg(Color::Blue),
_ => Style::default(),
};
let header = Spans::from(vec![
Span::styled(format!("{:<9}", level), s),
Span::raw(" "),
Span::styled(
"2020-01-01 10:00:00",
Style::default().add_modifier(Modifier::ITALIC),
),
]);
let log = Spans::from(vec![Span::raw(evt)]);
ListItem::new(vec![
Spans::from("-".repeat(chunks[1].width as usize)),
header,
Spans::from(""),
log,
])
})
.collect();
let events_list = List::new(events)
.block(Block::default().borders(Borders::ALL).title("List"))
.start_corner(Corner::BottomLeft);
f.render_widget(events_list, chunks[1]);
})?;
match events.next()? {
Event::Input(input) => match input {
Key::Char('q') => {
break;
}
Key::Left => {
app.items.unselect();
}
Key::Down => {
app.items.next();
}
Key::Up => {
app.items.previous();
}
_ => {}
},
Event::Tick => {
app.advance();
}
}
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(
terminal: &mut Terminal<B>,
mut app: App,
tick_rate: Duration,
) -> io::Result<()> {
let mut last_tick = Instant::now();
loop {
terminal.draw(|f| ui(f, &mut app))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if crossterm::event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
match key.code {
KeyCode::Char('q') => return Ok(()),
KeyCode::Left | KeyCode::Char('h') => app.items.unselect(),
KeyCode::Down | KeyCode::Char('j') => app.items.next(),
KeyCode::Up | KeyCode::Char('k') => app.items.previous(),
_ => {}
}
}
}
}
if last_tick.elapsed() >= tick_rate {
app.on_tick();
last_tick = Instant::now();
}
}
}
fn ui(f: &mut Frame, app: &mut App) {
// Create two chunks with equal horizontal screen space
let horizontal = Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)]);
let [item_list_area, event_list_area] = f.size().split(&horizontal);
// Iterate through all elements in the `items` app and append some debug text to it.
let items: Vec<ListItem> = app
.items
.items
.iter()
.map(|i| {
let mut lines = vec![Line::from(i.0.bold()).alignment(Alignment::Center)];
for _ in 0..i.1 {
lines.push(
"Lorem ipsum dolor sit amet, consectetur adipiscing elit."
.italic()
.into(),
);
}
ListItem::new(lines).style(Style::default().fg(Color::Black).bg(Color::White))
})
.collect();
// Create a List from all list items and highlight the currently selected one
let items = List::new(items)
.block(Block::default().borders(Borders::ALL).title("List"))
.highlight_style(
Style::default()
.bg(Color::LightGreen)
.add_modifier(Modifier::BOLD),
)
.highlight_symbol(">> ");
// We can now render the item list
f.render_stateful_widget(items, item_list_area, &mut app.items.state);
// Let's do the same for the events.
// The event list doesn't have any state and only displays the current state of the list.
let events: Vec<ListItem> = app
.events
.iter()
.rev()
.map(|&(event, level)| {
// Colorcode the level depending on its type
let s = match level {
"CRITICAL" => Style::default().fg(Color::Red),
"ERROR" => Style::default().fg(Color::Magenta),
"WARNING" => Style::default().fg(Color::Yellow),
"INFO" => Style::default().fg(Color::Blue),
_ => Style::default(),
};
// Add a example datetime and apply proper spacing between them
let header = Line::from(vec![
Span::styled(format!("{level:<9}"), s),
" ".into(),
"2020-01-01 10:00:00".italic(),
]);
// The event gets its own line
let log = Line::from(vec![event.into()]);
// Here several things happen:
// 1. Add a `---` spacing line above the final list entry
// 2. Add the Level + datetime
// 3. Add a spacer line
// 4. Add the actual event
ListItem::new(vec![
Line::from("-".repeat(event_list_area.width as usize)),
header,
Line::from(""),
log,
])
})
.collect();
let events_list = List::new(events)
.block(Block::default().borders(Borders::ALL).title("List"))
.direction(ListDirection::BottomToTop);
f.render_widget(events_list, event_list_area);
}

15
examples/list.tape Normal file
View File

@@ -0,0 +1,15 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/list.tape`
Output "target/list.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 600
Hide
Type "cargo run --example=list --features=crossterm"
Enter
Sleep 1s
Show
Down@1s 4
Up@1s 2
Left@1s 1
Sleep 5s

110
examples/modifiers.rs Normal file
View File

@@ -0,0 +1,110 @@
/// This example is useful for testing how your terminal emulator handles different modifiers.
/// It will render a grid of combinations of foreground and background colors with all
/// modifiers applied to them.
use std::{
error::Error,
io::{self, Stdout},
iter::once,
result,
time::Duration,
};
use crossterm::{
event::{self, Event, KeyCode},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
type Result<T> = result::Result<T, Box<dyn Error>>;
fn main() -> Result<()> {
let mut terminal = setup_terminal()?;
let res = run_app(&mut terminal);
restore_terminal(terminal)?;
if let Err(err) = res {
eprintln!("{err:?}");
}
Ok(())
}
fn run_app<B: Backend>(terminal: &mut Terminal<B>) -> io::Result<()> {
loop {
terminal.draw(ui)?;
if event::poll(Duration::from_millis(250))? {
if let Event::Key(key) = event::read()? {
if let KeyCode::Char('q') = key.code {
return Ok(());
}
}
}
}
}
fn ui(frame: &mut Frame) {
let vertical = Layout::vertical([Constraint::Length(1), Constraint::Min(0)]);
let [text_area, main_area] = frame.size().split(&vertical);
frame.render_widget(
Paragraph::new("Note: not all terminals support all modifiers")
.style(Style::default().fg(Color::Red).add_modifier(Modifier::BOLD)),
text_area,
);
let layout = Layout::vertical([Constraint::Length(1); 50])
.split(main_area)
.iter()
.flat_map(|area| {
Layout::horizontal([Constraint::Percentage(20); 5])
.split(*area)
.to_vec()
})
.collect_vec();
let colors = [
Color::Black,
Color::DarkGray,
Color::Gray,
Color::White,
Color::Red,
];
let all_modifiers = once(Modifier::empty())
.chain(Modifier::all().iter())
.collect_vec();
let mut index = 0;
for bg in colors.iter() {
for fg in colors.iter() {
for modifier in &all_modifiers {
let modifier_name = format!("{modifier:11?}");
let padding = (" ").repeat(12 - modifier_name.len());
let paragraph = Paragraph::new(Line::from(vec![
modifier_name.fg(*fg).bg(*bg).add_modifier(*modifier),
padding.fg(*fg).bg(*bg).add_modifier(*modifier),
// This is a hack to work around a bug in VHS which is used for rendering the
// examples to gifs. The bug is that the background color of a paragraph seems
// to bleed into the next character.
".".black().on_black(),
]));
frame.render_widget(paragraph, layout[index]);
index += 1;
}
}
}
}
fn setup_terminal() -> Result<Terminal<CrosstermBackend<Stdout>>> {
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
Ok(terminal)
}
fn restore_terminal(mut terminal: Terminal<CrosstermBackend<Stdout>>) -> Result<()> {
disable_raw_mode()?;
execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
terminal.show_cursor()?;
Ok(())
}

12
examples/modifiers.tape Normal file
View File

@@ -0,0 +1,12 @@
# This is a vhs script. See https://github.com/charmbracelet/vhs for more info.
# To run this script, install vhs and run `vhs ./examples/modifiers.tape`
Output "target/modifiers.gif"
Set Theme "Aardvark Blue"
Set Width 1200
Set Height 1460
Hide
Type "cargo run --example=modifiers --features=crossterm"
Enter
Sleep 2s
Show
Sleep 1s

134
examples/panic.rs Normal file
View File

@@ -0,0 +1,134 @@
//! How to use a panic hook to reset the terminal before printing the panic to
//! the terminal.
//!
//! When exiting normally or when handling `Result::Err`, we can reset the
//! terminal manually at the end of `main` just before we print the error.
//!
//! Because a panic interrupts the normal control flow, manually resetting the
//! terminal at the end of `main` won't do us any good. Instead, we need to
//! make sure to set up a panic hook that first resets the terminal before
//! handling the panic. This both reuses the standard panic hook to ensure a
//! consistent panic handling UX and properly resets the terminal to not
//! distort the output.
//!
//! That's why this example is set up to show both situations, with and without
//! the chained panic hook, to see the difference.
use std::{error::Error, io};
use crossterm::{
event::{self, Event, KeyCode},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{prelude::*, widgets::*};
type Result<T> = std::result::Result<T, Box<dyn Error>>;
#[derive(Default)]
struct App {
hook_enabled: bool,
}
impl App {
fn chain_hook(&mut self) {
let original_hook = std::panic::take_hook();
std::panic::set_hook(Box::new(move |panic| {
reset_terminal().unwrap();
original_hook(panic);
}));
self.hook_enabled = true;
}
}
fn main() -> Result<()> {
let mut terminal = init_terminal()?;
let mut app = App::default();
let res = run_tui(&mut terminal, &mut app);
reset_terminal()?;
if let Err(err) = res {
println!("{err:?}");
}
Ok(())
}
/// Initializes the terminal.
fn init_terminal() -> Result<Terminal<CrosstermBackend<io::Stdout>>> {
crossterm::execute!(io::stdout(), EnterAlternateScreen)?;
enable_raw_mode()?;
let backend = CrosstermBackend::new(io::stdout());
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
Ok(terminal)
}
/// Resets the terminal.
fn reset_terminal() -> Result<()> {
disable_raw_mode()?;
crossterm::execute!(io::stdout(), LeaveAlternateScreen)?;
Ok(())
}
/// Runs the TUI loop.
fn run_tui<B: Backend>(terminal: &mut Terminal<B>, app: &mut App) -> io::Result<()> {
loop {
terminal.draw(|f| ui(f, app))?;
if let Event::Key(key) = event::read()? {
match key.code {
KeyCode::Char('p') => {
panic!("intentional demo panic");
}
KeyCode::Char('e') => {
app.chain_hook();
}
_ => {
return Ok(());
}
}
}
}
}
/// Render the TUI.
fn ui(f: &mut Frame, app: &App) {
let text = vec![
if app.hook_enabled {
Line::from("HOOK IS CURRENTLY **ENABLED**")
} else {
Line::from("HOOK IS CURRENTLY **DISABLED**")
},
Line::from(""),
Line::from("press `p` to panic"),
Line::from("press `e` to enable the terminal-resetting panic hook"),
Line::from("press any other key to quit without panic"),
Line::from(""),
Line::from("when you panic without the chained hook,"),
Line::from("you will likely have to reset your terminal afterwards"),
Line::from("with the `reset` command"),
Line::from(""),
Line::from("with the chained panic hook enabled,"),
Line::from("you should see the panic report as you would without ratatui"),
Line::from(""),
Line::from("try first without the panic handler to see the difference"),
];
let b = Block::default()
.title("Panic Handler Demo")
.borders(Borders::ALL);
let p = Paragraph::new(text).block(b).alignment(Alignment::Center);
f.render_widget(p, f.size());
}

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