Compare commits

..

1 Commits

Author SHA1 Message Date
Dheepak Krishnamurthy
9f1b8c9c68 feat: Adds message to assert_buffer_eq! 2024-01-18 23:38:33 -05:00
421 changed files with 30547 additions and 55487 deletions

16
.cargo-husky/hooks/pre-push Executable file
View File

@@ -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

View File

@@ -1,2 +0,0 @@
[alias]
xtask = "run --package xtask --"

View File

@@ -32,17 +32,17 @@ schema_pattern = "(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)
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" },
{ 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"

View File

@@ -2,12 +2,6 @@
root = true
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true
[*.rs]
indent_style = space
indent_size = 4

9
.github/CODEOWNERS vendored
View File

@@ -1,11 +1,8 @@
# See <https://help.github.com/articles/about-codeowners/>
# 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>
# https://git-scm.com/docs/gitignore#_pattern_format
# Maintainers
* @ratatui/maintainers
* @orhun @mindoodoo @sayanarijit @joshka @kdheepak @Valentin271

2
.github/FUNDING.yml vendored
View File

@@ -1,2 +0,0 @@
github: ratatui
open_collective: ratatui

View File

@@ -2,7 +2,7 @@
name: Bug report
about: Create an issue about a bug you encountered
title: ''
labels: 'Type: Bug'
labels: bug
assignees: ''
---
@@ -17,22 +17,26 @@ A detailed and complete issue is more likely to be processed quickly.
A clear and concise description of what the bug is.
-->
## 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, gifs or videos to help explain your problem.
-->
## Environment
<!--
Add a description of the systems where you are observing the issue. For example:

View File

@@ -1,11 +1,5 @@
blank_issues_enabled: false
contact_links:
- name: Frequently Asked Questions
url: https://ratatui.rs/faq/
about: Check the website FAQ section to see if your question has already been answered
- name: Ratatui Forum
url: https://forum.ratatui.rs
about: Ask questions about ratatui on our Forum
- name: Discord Chat
url: https://discord.gg/pMCEU9hNEj
about: Ask questions about ratatui on Discord

View File

@@ -2,7 +2,7 @@
name: Feature request
about: Suggest an idea for this project
title: ''
labels: 'Type: Enhancement'
labels: enhancement
assignees: ''
---

View File

@@ -1,25 +0,0 @@
name: Run Benchmarks
on:
push:
branches:
- main
jobs:
benchmark_base_branch:
name: Continuous Benchmarking with Bencher
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- uses: bencherdev/bencher@main
- name: Track base branch benchmarks with Bencher
run: |
bencher run \
--project ratatui-org \
--token '${{ secrets.BENCHER_API_TOKEN }}' \
--branch main \
--testbed ubuntu-latest \
--adapter rust_criterion \
--err \
cargo bench

View File

@@ -1,25 +0,0 @@
name: Run and Cache Benchmarks
on:
pull_request:
types: [opened, reopened, edited, synchronize]
jobs:
benchmark_fork_pr_branch:
name: Run Fork PR Benchmarks
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Run Benchmarks
run: cargo bench > benchmark_results.txt
- name: Upload Benchmark Results
uses: actions/upload-artifact@v4
with:
name: benchmark_results.txt
path: ./benchmark_results.txt
- name: Upload GitHub Pull Request Event
uses: actions/upload-artifact@v4
with:
name: event.json
path: ${{ github.event_path }}

View File

@@ -1,56 +0,0 @@
name: Track Benchmarks with Bencher
on:
workflow_run:
workflows: [Run and Cache Benchmarks]
types: [completed]
permissions:
contents: read
pull-requests: write
jobs:
track_fork_pr_branch:
if: github.event.workflow_run.conclusion == 'success'
runs-on: ubuntu-latest
env:
BENCHMARK_RESULTS: benchmark_results.txt
PR_EVENT: event.json
steps:
- name: Download Benchmark Results
uses: dawidd6/action-download-artifact@v8
with:
name: ${{ env.BENCHMARK_RESULTS }}
run_id: ${{ github.event.workflow_run.id }}
- name: Download PR Event
uses: dawidd6/action-download-artifact@v8
with:
name: ${{ env.PR_EVENT }}
run_id: ${{ github.event.workflow_run.id }}
- name: Export PR Event Data
uses: actions/github-script@v7
with:
script: |
let fs = require('fs');
let prEvent = JSON.parse(fs.readFileSync(process.env.PR_EVENT, {encoding: 'utf8'}));
core.exportVariable("PR_HEAD", prEvent.pull_request.head.ref);
core.exportVariable("PR_BASE", prEvent.pull_request.base.ref);
core.exportVariable("PR_BASE_SHA", prEvent.pull_request.base.sha);
core.exportVariable("PR_NUMBER", prEvent.number);
- uses: bencherdev/bencher@main
- name: Track Benchmarks with Bencher
run: |
bencher run \
--project ratatui-org \
--token '${{ secrets.BENCHER_API_TOKEN }}' \
--branch "$PR_HEAD" \
--start-point "$PR_BASE" \
--start-point-hash "$PR_BASE_SHA" \
--start-point-clone-thresholds \
--start-point-reset \
--testbed ubuntu-latest \
--adapter rust_criterion \
--err \
--github-actions '${{ secrets.GITHUB_TOKEN }}' \
--ci-number "$PR_NUMBER" \
--file "$BENCHMARK_RESULTS"

View File

@@ -1,4 +1,4 @@
name: Release alpha version
name: Continuous Deployment
on:
workflow_dispatch:
@@ -6,6 +6,9 @@ on:
# At 00:00 on Saturday
# https://crontab.guru/#0_0_*_*_6
- cron: "0 0 * * 6"
push:
tags:
- "v*.*.*"
defaults:
run:
@@ -17,6 +20,7 @@ jobs:
runs-on: ubuntu-latest
permissions:
contents: write
if: ${{ !startsWith(github.event.ref, 'refs/tags/v') }}
steps:
- name: Checkout the repository
uses: actions/checkout@v4
@@ -26,14 +30,14 @@ jobs:
- name: Calculate the next release
run: .github/workflows/calculate-alpha-release.bash
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
- name: Publish
run: cargo publish --allow-dirty --token ${{ secrets.CARGO_TOKEN }}
- 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@v4
uses: orhun/git-cliff-action@v2
with:
config: cliff.toml
args: --unreleased --tag ${{ env.NEXT_TAG }} --strip header
@@ -46,3 +50,17 @@ jobs:
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 }}

View File

@@ -44,6 +44,24 @@ jobs:
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:
@@ -71,7 +89,7 @@ jobs:
issue_number: context.issue.number,
owner: context.repo.owner,
repo: context.repo.repo,
labels: ['Type: Breaking Change']
labels: ['breaking change']
})
do-not-merge:
@@ -84,3 +102,4 @@ jobs:
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

@@ -1,16 +0,0 @@
name: Check Semver
on:
pull_request:
branches:
- main
jobs:
check-semver:
name: Check semver
runs-on: ubuntu-latest
steps:
- name: Checkout the repository
uses: actions/checkout@v4
- name: Check semver
uses: obi1kenobi/cargo-semver-checks-action@v2

View File

@@ -9,6 +9,7 @@ on:
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
@@ -16,175 +17,143 @@ concurrency:
group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
cancel-in-progress: true
# lint, clippy and coverage 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.
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:
# Lint the formatting of the codebase.
lint-formatting:
name: Check Formatting
lint:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@nightly
with: { components: rustfmt }
- uses: Swatinem/rust-cache@v2
- uses: taiki-e/install-action@v2
- 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:
tool: taplo-cli
- run: cargo xtask format --check
# Check for typos in the codebase.
# See <https://github.com/crate-ci/typos/>
lint-typos:
name: Check Typos
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: crate-ci/typos@master
# Check for any disallowed dependencies in the codebase due to license / security issues.
# See <https://github.com/EmbarkStudios/cargo-deny>
dependencies:
name: Check Dependencies
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- uses: taiki-e/install-action@cargo-deny
- run: cargo deny --log-level info --all-features check
# Check for any unused dependencies in the codebase.
# See <https://github.com/bnjbvr/cargo-machete/>
cargo-machete:
name: Check Unused Dependencies
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: bnjbvr/cargo-machete@v0.7.0
# Run cargo clippy.
lint-clippy:
name: Check Clippy
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with: { components: clippy }
- uses: Swatinem/rust-cache@v2
- run: cargo xtask clippy
# Run markdownlint on all markdown files in the repository.
lint-markdown:
name: Check Markdown
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: DavidAnson/markdownlint-cli2-action@v19
ref: ${{ github.event.pull_request.head.sha }}
- name: Install Rust nightly
uses: dtolnay/rust-toolchain@nightly
with:
globs: |
'**/*.md'
'!target'
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:
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:
components: clippy
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Run cargo make clippy-all
run: cargo make clippy
# Run cargo coverage. This will generate a coverage report and upload it to codecov.
# <https://app.codecov.io/gh/ratatui/ratatui>
coverage:
name: Coverage Report
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
with:
components: llvm-tools
- uses: taiki-e/install-action@cargo-llvm-cov
- uses: Swatinem/rust-cache@v2
- run: cargo xtask coverage
- uses: codecov/codecov-action@v5
- name: Install cargo-llvm-cov and cargo-make
uses: taiki-e/install-action@v2
with:
tool: cargo-llvm-cov,cargo-make
- name: Generate coverage
run: cargo make coverage
- name: Upload to codecov.io
uses: codecov/codecov-action@v3
with:
token: ${{ secrets.CODECOV_TOKEN }}
fail_ci_if_error: true
# Run cargo check. This is a fast way to catch any obvious errors in the code.
check:
name: Check ${{ matrix.os }} ${{ matrix.toolchain }}
strategy:
fail-fast: false
matrix:
os: [ubuntu-latest, windows-latest, macos-latest]
toolchain: ["1.74.0", "stable"]
os: [ ubuntu-latest, windows-latest, macos-latest ]
toolchain: [ "1.70.0", "stable" ]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
- name: Checkout
uses: actions/checkout@v4
- name: Install Rust {{ matrix.toolchain }}
uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{ matrix.toolchain }}
- uses: Swatinem/rust-cache@v2
- run: cargo xtask check --all-features
- name: Install cargo-make
uses: taiki-e/install-action@cargo-make
- name: Run cargo make check
run: cargo make check
env:
RUST_BACKTRACE: full
# Check if README.md is up-to-date with the crate's documentation.
check-readme:
name: Check README
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
- uses: taiki-e/install-action@cargo-rdme
- run: cargo xtask readme --check
# Run cargo rustdoc with the same options that would be used by docs.rs, taking into account the
# package.metadata.docs.rs configured in Cargo.toml. https://github.com/dtolnay/cargo-docs-rs
lint-docs:
name: Check Docs
runs-on: ubuntu-latest
env:
RUSTDOCFLAGS: -Dwarnings
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@nightly
- uses: dtolnay/install@cargo-docs-rs
- uses: Swatinem/rust-cache@v2
- run: cargo xtask docs
# Run cargo test on the documentation of the crate. This will catch any code examples that don't
# compile, or any other issues in the documentation.
test-docs:
name: Test Docs
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- uses: Swatinem/rust-cache@v2
- run: cargo xtask test-docs
# Run cargo test on the libraries of the crate.
test-libs:
name: Test Libs ${{ matrix.toolchain }}
runs-on: ubuntu-latest
test-doc:
strategy:
fail-fast: false
matrix:
toolchain: ["1.74.0", "stable"]
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- uses: Swatinem/rust-cache@v2
- run: cargo xtask test-libs
# Run cargo test on all the backends.
test-backends:
name: Test ${{matrix.backend}} on ${{ matrix.os }}
os: [ ubuntu-latest, windows-latest, macos-latest ]
runs-on: ${{ matrix.os }}
steps:
- 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]
backend: [crossterm, termion, termwiz]
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:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- uses: Swatinem/rust-cache@v2
- run: cargo xtask test-backend ${{ matrix.backend }}
- 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

View File

@@ -1,52 +0,0 @@
name: Release-plz
permissions:
pull-requests: write
contents: write
on:
push:
branches:
- main
jobs:
# Release unpublished packages.
release-plz-release:
name: Release-plz release
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Install Rust toolchain
uses: dtolnay/rust-toolchain@stable
- name: Run release-plz
uses: release-plz/action@v0.5
with:
command: release
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_TOKEN }}
# Create a PR with the new versions and changelog, preparing the next release.
release-plz-pr:
name: Release-plz PR
runs-on: ubuntu-latest
concurrency:
group: release-plz-${{ github.ref }}
cancel-in-progress: false
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Install Rust toolchain
uses: dtolnay/rust-toolchain@stable
- name: Run release-plz
uses: release-plz/action@v0.5
with:
command: release-pr
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_TOKEN }}

View File

@@ -1,45 +0,0 @@
name: Release stable version
on:
push:
tags:
- "v*.*.*"
jobs:
publish-stable:
name: Create an stable release
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- name: Checkout the repository
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Generate a changelog
uses: orhun/git-cliff-action@v4
with:
config: cliff.toml
args: --latest --strip header
env:
OUTPUT: BODY.md
- name: Publish on GitHub
uses: ncipollo/release-action@v1
with:
prerelease: false
bodyFile: BODY.md
publish-crate:
name: Publish crate
runs-on: ubuntu-latest
steps:
- name: Checkout the repository
uses: actions/checkout@v4
- name: Install Rust stable
uses: dtolnay/rust-toolchain@stable
- name: Publish
run: cargo publish --token ${{ secrets.CARGO_TOKEN }}

1
.gitignore vendored
View File

@@ -1,4 +1,5 @@
target
Cargo.lock
*.log
*.rs.rustfmt
.gdb_history

View File

@@ -1,12 +0,0 @@
include = ["**/*.toml"]
[formatting]
column_width = 100
reorder_keys = false
[[rule]]
include = ["**/Cargo.toml"]
keys = ["dependencies", "dev-dependencies", "build-dependencies", "workspace.dependencies"]
[rule.formatting]
reorder_keys = true

View File

@@ -2,44 +2,15 @@
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.
github with a [breaking change] label.
[breaking change]: (https://github.com/ratatui/ratatui/issues?q=label%3A%22breaking+change%22)
[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:
- [Unreleased](#unreleased)
- The `From` impls for backend types are now replaced with more specific traits
- `FrameExt` trait for `unstable-widget-ref` feature
- [v0.29.0](#v0290)
- `Sparkline::data` takes `IntoIterator<Item = SparklineBar>` instead of `&[u64]` and is no longer const
- Removed public fields from `Rect` iterators
- `Line` now implements `From<Cow<str>`
- `Table::highlight_style` is now `Table::row_highlight_style`
- `Tabs::select` now accepts `Into<Option<usize>>`
- `Color::from_hsl` is now behind the `palette` feature
- [v0.28.0](#v0280)
- `Backend::size` returns `Size` instead of `Rect`
- `Backend` trait migrates to `get/set_cursor_position`
- Ratatui now requires Crossterm 0.28.0
- `Axis::labels` now accepts `IntoIterator<Into<Line>>`
- `Layout::init_cache` no longer returns bool and takes a `NonZeroUsize` instead of `usize`
- `ratatui::terminal` module is now private
- `ToText` no longer has a lifetime
- `Frame::size` is deprecated and renamed to `Frame::area`
- [v0.27.0](#v0270)
- List no clamps the selected index to list
- Prelude items added / removed
- 'termion' updated to 4.0
- `Rect::inner` takes `Margin` directly instead of reference
- `Buffer::filled` takes `Cell` directly instead of reference
- `Stylize::bg()` now accepts `Into<Color>`
- Removed deprecated `List::start_corner`
- `LineGauge::gauge_style` is deprecated
- [v0.26.0](#v0260)
- `Flex::Start` is the new default flex mode for `Layout`
- [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
@@ -65,7 +36,7 @@ This is a quick summary of the sections below:
- `Scrollbar`: symbols moved to `symbols` module
- MSRV is now 1.67.0
- [v0.22.0](#v0220)
- `serde` representation of `Borders` and `Modifiers` has changed
- serde representation of `Borders` and `Modifiers` has changed
- [v0.21.0](#v0210)
- MSRV is now 1.65.0
- `terminal::ViewPort` is now an enum
@@ -75,448 +46,13 @@ This is a quick summary of the sections below:
- MSRV is now 1.63.0
- `List` no longer ignores empty strings
## Unreleased (0.30.0)
### `FrameExt` trait for `unstable-widget-ref` feature ([#1530])
[#1530]: https://github.com/ratatui/ratatui/pull/1530
To call `Frame::render_widget_ref()` or `Frame::render_stateful_widget_ref()` you now need to:
1. Import the `FrameExt` trait from `ratatui::widgets`.
2. Enable the `unstable-widget-ref` feature.
For example:
```rust
use ratatui::{
layout::Rect,
widgets::{Block, FrameExt},
};
let block = Block::new();
let area = Rect::new(0, 0, 5, 5);
frame.render_widget_ref(&block, area);
```
### `WidgetRef` no longer has a blanket implementation of Widget
Previously there was a blanket implementation of Widget for WidgetRef. This has been reversed to
instead be a blanket implementation of WidgetRef for all &W where W: Widget. Any widgets that
previously implemented WidgetRef directly should now instead implement Widget for a reference to the
type.
```diff
-impl WidgetRef for Foo {
- fn render_ref(&self, area: Rect, buf: &mut Buffer)
+impl Widget for &Foo {
+ fn render(self, area: Rect, buf: &mut Buffer)
}
```
### The `From` impls for backend types are now replaced with more specific traits [#1464]
[#1464]: https://github.com/ratatui/ratatui/pull/1464
Crossterm gains `ratatui::backend::crossterm::{FromCrossterm, IntoCrossterm}`
Termwiz gains `ratatui::backend::termwiz::{FromTermwiz, IntoTermwiz}`
This is necessary in order to avoid the orphan rule when implementing `From` for crossterm types
once the crossterm types are moved to a separate crate.
```diff
+ use ratatui::backend::crossterm::{FromCrossterm, IntoCrossterm};
let crossterm_color = crossterm::style::Color::Black;
- let ratatui_color = crossterm_color.into();
- let ratatui_color = ratatui::style::Color::from(crossterm_color);
+ let ratatui_color = ratatui::style::Color::from_crossterm(crossterm_color);
- let crossterm_color = ratatui_color.into();
- let crossterm_color = crossterm::style::Color::from(ratatui_color);
+ let crossterm_color = ratatui_color.into_crossterm();
let crossterm_attribute = crossterm::style::types::Attribute::Bold;
- let ratatui_modifier = crossterm_attribute.into();
- let ratatui_modifier = ratatui::style::Modifier::from(crossterm_attribute);
+ let ratatui_modifier = ratatui::style::Modifier::from_crossterm(crossterm_attribute);
- let crossterm_attribute = ratatui_modifier.into();
- let crossterm_attribute = crossterm::style::types::Attribute::from(ratatui_modifier);
+ let crossterm_attribute = ratatui_modifier.into_crossterm();
```
Similar conversions for `ContentStyle` -> `Style` and `Attributes` -> `Modifier` exist for
Crossterm and the various Termion and Termwiz types as well.
### `Bar::label()` and `BarGroup::label()` now accepts `Into<Line<'a>>`. ([#1471])
[#1471]: https://github.com/ratatui/ratatui/pull/1471
Previously `Bar::label()` and `BarGroup::label()` accepted `Line<'a>`, but they now accepts `Into<Line<'a>>`.
for `Bar::label()`:
```diff
- Bar::default().label("foo".into());
+ Bar::default().label("foo");
```
for `BarGroup::label()`:
```diff
- BarGroup::default().label("bar".into());
+ BarGroup::default().label("bar");
```
### `Bar::text_value` now accepts `Into<String>` ([#1471])
Previously `Bar::text_value` accepted `String`, but now it accepts `Into<String>`.
for `Bar::text_value()`:
```diff
- Bar::default().text_value("foobar".into());
+ Bar::default().text_value("foobar");
```
## [v0.29.0](https://github.com/ratatui/ratatui/releases/tag/v0.29.0)
### `Sparkline::data` takes `IntoIterator<Item = SparklineBar>` instead of `&[u64]` and is no longer const ([#1326])
[#1326]: https://github.com/ratatui/ratatui/pull/1326
The `Sparkline::data` method has been modified to accept `IntoIterator<Item = SparklineBar>`
instead of `&[u64]`.
`SparklineBar` is a struct that contains an `Option<u64>` value, which represents an possible
_absent_ value, as distinct from a `0` value. This change allows the `Sparkline` to style
data points differently, depending on whether they are present or absent.
`SparklineBar` also contains an `Option<Style>` that will be used to apply a style the bar in
addition to any other styling applied to the `Sparkline`.
Several `From` implementations have been added to `SparklineBar` to support existing callers who
provide `&[u64]` and other types that can be converted to `SparklineBar`, such as `Option<u64>`.
If you encounter any type inference issues, you may need to provide an explicit type for the data
passed to `Sparkline::data`. For example, if you are passing a single value, you may need to use
`into()` to convert it to form that can be used as a `SparklineBar`:
```diff
let value = 1u8;
- Sparkline::default().data(&[value.into()]);
+ Sparkline::default().data(&[u64::from(value)]);
```
As a consequence of this change, the `data` method is no longer a `const fn`.
### `Color::from_hsl` is now behind the `palette` feature and accepts `palette::Hsl` ([#1418])
[#1418]: https://github.com/ratatui/ratatui/pull/1418
Previously `Color::from_hsl` accepted components as individual f64 parameters. It now accepts a
single `palette::Hsl` value and is gated behind a `palette` feature flag.
```diff
- Color::from_hsl(360.0, 100.0, 100.0)
+ Color::from_hsl(Hsl::new(360.0, 100.0, 100.0))
```
### Removed public fields from `Rect` iterators ([#1358], [#1424])
[#1358]: https://github.com/ratatui/ratatui/pull/1358
[#1424]: https://github.com/ratatui/ratatui/pull/1424
The `pub` modifier has been removed from fields on the `Columns`,`Rows`, and `Positions` iterators.
These fields were not intended to be public and should not have been accessed directly.
### `Rect::area()` now returns u32 instead of u16 ([#1378])
[#1378]: https://github.com/ratatui/ratatui/pull/1378
This is likely to impact anything which relies on `Rect::area` maxing out at u16::MAX. It can now
return up to u16::MAX * u16::MAX (2^32 - 2^17 + 1).
### `Line` now implements `From<Cow<str>` ([#1373])
[#1373]: https://github.com/ratatui/ratatui/pull/1373
As this adds an extra conversion, ambiguous inferred expressions may no longer compile.
```rust
// given:
struct Foo { ... }
impl From<Foo> for String { ... }
impl From<Foo> for Cow<str> { ... }
let foo = Foo { ... };
let line = Line::from(foo); // now fails due to now ambiguous inferred type
// replace with e.g.
let line = Line::from(String::from(foo));
```
### `Tabs::select()` now accepts `Into<Option<usize>>` ([#1413])
[#1413]: https://github.com/ratatui/ratatui/pull/1413
Previously `Tabs::select()` accepted `usize`, but it now accepts `Into<Option<usize>>`. This breaks
any code already using parameter type inference:
```diff
let selected = 1u8;
- let tabs = Tabs::new(["A", "B"]).select(selected.into())
+ let tabs = Tabs::new(["A", "B"]).select(selected as usize)
```
### `Table::highlight_style` is now `Table::row_highlight_style` ([#1331])
[#1331]: https://github.com/ratatui/ratatui/pull/1331
The `Table::highlight_style` is now deprecated in favor of `Table::row_highlight_style`.
Also, the serialized output of the `TableState` will now include the "selected_column" field.
Software that manually parse the serialized the output (with anything other than the `Serialize`
implementation on `TableState`) may have to be refactored if the "selected_column" field is not
accounted for. This does not affect users who rely on the `Deserialize`, or `Serialize`
implementation on the state.
## [v0.28.0](https://github.com/ratatui/ratatui/releases/tag/v0.28.0)
### `Backend::size` returns `Size` instead of `Rect` ([#1254])
[#1254]: https://github.com/ratatui/ratatui/pull/1254
The `Backend::size` method returns a `Size` instead of a `Rect`.
There is no need for the position here as it was always 0,0.
### `Backend` trait migrates to `get/set_cursor_position` ([#1284])
[#1284]: https://github.com/ratatui/ratatui/pull/1284
If you just use the types implementing the `Backend` trait, you will see deprecation hints but
nothing is a breaking change for you.
If you implement the Backend trait yourself, you need to update the implementation and add the
`get/set_cursor_position` method. You can remove the `get/set_cursor` methods as they are deprecated
and a default implementation for them exists.
### Ratatui now requires Crossterm 0.28.0 ([#1278])
[#1278]: https://github.com/ratatui/ratatui/pull/1278
Crossterm is updated to version 0.28.0, which is a semver incompatible version with the previous
version (0.27.0). Ratatui re-exports the version of crossterm that it is compatible with under
`ratatui::crossterm`, which can be used to avoid incompatible versions in your dependency list.
### `Axis::labels()` now accepts `IntoIterator<Into<Line>>` ([#1273] and [#1283])
[#1273]: https://github.com/ratatui/ratatui/pull/1173
[#1283]: https://github.com/ratatui/ratatui/pull/1283
Previously Axis::labels accepted `Vec<Span>`. Any code that uses conversion methods that infer the
type will need to be rewritten as the compiler cannot infer the correct type.
```diff
- Axis::default().labels(vec!["a".into(), "b".into()])
+ Axis::default().labels(["a", "b"])
```
### `Layout::init_cache` no longer returns bool and takes a `NonZeroUsize` instead of `usize` ([#1245])
[#1245]: https://github.com/ratatui/ratatui/pull/1245
```diff
- let is_initialized = Layout::init_cache(100);
+ Layout::init_cache(NonZeroUsize::new(100).unwrap());
```
### `ratatui::terminal` module is now private ([#1160])
[#1160]: https://github.com/ratatui/ratatui/pull/1160
The `terminal` module is now private and can not be used directly. The types under this module are
exported from the root of the crate. This reduces clashes with other modules in the backends that
are also named terminal, and confusion about module exports for newer Rust users.
```diff
- use ratatui::terminal::{CompletedFrame, Frame, Terminal, TerminalOptions, ViewPort};
+ use ratatui::{CompletedFrame, Frame, Terminal, TerminalOptions, ViewPort};
```
### `ToText` no longer has a lifetime ([#1234])
[#1234]: https://github.com/ratatui/ratatui/pull/1234
This change simplifies the trait and makes it easier to implement.
### `Frame::size` is deprecated and renamed to `Frame::area` ([#1293])
[#1293]: https://github.com/ratatui/ratatui/pull/1293
`Frame::size` is renamed to `Frame::area` as it's the more correct name.
## [v0.27.0](https://github.com/ratatui/ratatui/releases/tag/v0.27.0)
### List no clamps the selected index to list ([#1159])
[#1149]: https://github.com/ratatui/ratatui/pull/1149
The `List` widget now clamps the selected index to the bounds of the list when navigating with
`first`, `last`, `previous`, and `next`, as well as when setting the index directly with `select`.
Previously selecting an index past the end of the list would show treat the list as having a
selection which was not visible. Now the last item in the list will be selected instead.
### Prelude items added / removed ([#1149])
The following items have been removed from the prelude:
- `style::Styled` - this trait is useful for widgets that want to
support the Stylize trait, but it adds complexity as widgets have two
`style` methods and a `set_style` method.
- `symbols::Marker` - this item is used by code that needs to draw to
the `Canvas` widget, but it's not a common item that would be used by
most users of the library.
- `terminal::{CompletedFrame, TerminalOptions, Viewport}` - these items
are rarely used by code that needs to interact with the terminal, and
they're generally only ever used once in any app.
The following items have been added to the prelude:
- `layout::{Position, Size}` - these items are used by code that needs
to interact with the layout system. These are newer items that were
added in the last few releases, which should be used more liberally.
This may cause conflicts for types defined elsewhere with a similar
name.
To update your app:
```diff
// if your app uses Styled::style() or Styled::set_style():
-use ratatui::prelude::*;
+use ratatui::{prelude::*, style::Styled};
// if your app uses symbols::Marker:
-use ratatui::prelude::*;
+use ratatui::{prelude::*, symbols::Marker}
// if your app uses terminal::{CompletedFrame, TerminalOptions, Viewport}
-use ratatui::prelude::*;
+use ratatui::{prelude::*, terminal::{CompletedFrame, TerminalOptions, Viewport}};
// to disambiguate existing types named Position or Size:
- use some_crate::{Position, Size};
- let size: Size = ...;
- let position: Position = ...;
+ let size: some_crate::Size = ...;
+ let position: some_crate::Position = ...;
```
### Termion is updated to 4.0 [#1106]
Changelog: <https://gitlab.redox-os.org/redox-os/termion/-/blob/master/CHANGELOG.md>
A change is only necessary if you were matching on all variants of the `MouseEvent` enum without a
wildcard. In this case, you need to either handle the two new variants, `MouseLeft` and
`MouseRight`, or add a wildcard.
[#1106]: https://github.com/ratatui/ratatui/pull/1106
### `Rect::inner` takes `Margin` directly instead of reference ([#1008])
[#1008]: https://github.com/ratatui/ratatui/pull/1008
`Margin` needs to be passed without reference now.
```diff
-let area = area.inner(&Margin {
+let area = area.inner(Margin {
vertical: 0,
horizontal: 2,
});
```
### `Buffer::filled` takes `Cell` directly instead of reference ([#1148])
[#1148]: https://github.com/ratatui/ratatui/pull/1148
`Buffer::filled` moves the `Cell` instead of taking a reference.
```diff
-Buffer::filled(area, &Cell::new("X"));
+Buffer::filled(area, Cell::new("X"));
```
### `Stylize::bg()` now accepts `Into<Color>` ([#1103])
[#1103]: https://github.com/ratatui/ratatui/pull/1103
Previously, `Stylize::bg()` accepted `Color` but now accepts `Into<Color>`. This allows more
flexible types from calling scopes, though it can break some type inference in the calling scope.
### Remove deprecated `List::start_corner` and `layout::Corner` ([#759])
[#759]: https://github.com/ratatui/ratatui/pull/759
`List::start_corner` was deprecated in v0.25. Use `List::direction` and `ListDirection` instead.
```diff
- list.start_corner(Corner::TopLeft);
- list.start_corner(Corner::TopRight);
// This is not an error, BottomRight rendered top to bottom previously
- list.start_corner(Corner::BottomRight);
// all becomes
+ list.direction(ListDirection::TopToBottom);
```
```diff
- list.start_corner(Corner::BottomLeft);
// becomes
+ list.direction(ListDirection::BottomToTop);
```
`layout::Corner` was removed entirely.
### `LineGauge::gauge_style` is deprecated ([#565])
[#565]: https://github.com/ratatui/ratatui/pull/1148
`LineGauge::gauge_style` is deprecated and replaced with `LineGauge::filled_style` and `LineGauge::unfilled_style`:
```diff
let gauge = LineGauge::default()
- .gauge_style(Style::default().fg(Color::Red).bg(Color::Blue)
+ .filled_style(Style::default().fg(Color::Green))
+ .unfilled_style(Style::default().fg(Color::White));
```
## [v0.26.0](https://github.com/ratatui/ratatui/releases/tag/v0.26.0)
### `Flex::Start` is the new default flex mode for `Layout` ([#881])
[#881]: https://github.com/ratatui/ratatui/pull/881
Previously, constraints would stretch to fill all available space, violating constraints if
necessary.
With v0.26.0, `Flex` modes are introduced, and the default is `Flex::Start`, which will align
areas associated with constraints to be beginning of the area. With v0.26.0, additionally,
`Min` constraints grow to fill excess space. These changes will allow users to build layouts
more easily.
With v0.26.0, users will most likely not need to change what constraints they use to create
existing layouts with `Flex::Start`. However, to get old behavior, use `Flex::Legacy`.
```diff
- let rects = Layout::horizontal([Length(1), Length(2)]).split(area);
// becomes
+ let rects = Layout::horizontal([Length(1), Length(2)]).flex(Flex::Legacy).split(area);
```
## v0.26.0 (unreleased)
### `Table::new()` now accepts `IntoIterator<Item: Into<Row<'a>>>` ([#774])
[#774]: https://github.com/ratatui/ratatui/pull/774
[#774]: https://github.com/ratatui-org/ratatui/pull/774
Previously, `Table::new()` accepted `IntoIterator<Item=Row<'a>>`. The argument change to
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.
@@ -531,9 +67,9 @@ This can be resolved either by providing an explicit type (e.g. `Vec::<Row>::new
### `Tabs::new()` now accepts `IntoIterator<Item: Into<Line<'a>>>` ([#776])
[#776]: https://github.com/ratatui/ratatui/pull/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
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
@@ -547,17 +83,17 @@ by removing the call to `.collect()`.
### Table::default() now sets segment_size to None and column_spacing to ([#751])
[#751]: https://github.com/ratatui/ratatui/pull/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.
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/ratatui/pull/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
@@ -574,6 +110,8 @@ The following example shows how to migrate for `Line`, but the same applies for
### 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
@@ -583,7 +121,7 @@ The following example shows how to migrate for `Line`, but the same applies for
### `Block` style methods cannot be used in a const context ([#720])
[#720]: https://github.com/ratatui/ratatui/pull/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
@@ -591,10 +129,10 @@ 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/ratatui/pull/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::styled` method. Any code that creates
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()`).
@@ -615,11 +153,11 @@ the `Span::style` field.
.alignment(Alignment::Left);
```
## [v0.25.0](https://github.com/ratatui/ratatui/releases/tag/v0.25.0)
## [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/ratatui/pull/691
[#691]: https://github.com/ratatui-org/ratatui/pull/691
These items were deprecated since 0.10.
@@ -633,7 +171,7 @@ These items were deprecated since 0.10.
### `List::new()` now accepts `IntoIterator<Item = Into<ListItem<'a>>>` ([#672])
[#672]: https://github.com/ratatui/ratatui/pull/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).
@@ -648,7 +186,7 @@ E.g.
### The default `Tabs::highlight_style` is now `Style::new().reversed()` ([#635])
[#635]: https://github.com/ratatui/ratatui/pull/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.
@@ -660,10 +198,10 @@ widget in the default configuration would not show any indication of the selecte
### `Table::new()` now requires specifying the widths of the columns ([#664])
[#664]: https://github.com/ratatui/ratatui/pull/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:
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)
@@ -686,7 +224,7 @@ or complex, it may be convenient to replace `Table::new` with `Table::default().
### `Table::widths()` now accepts `IntoIterator<Item = AsRef<Constraint>>` ([#663])
[#663]: https://github.com/ratatui/ratatui/pull/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
@@ -702,7 +240,7 @@ E.g.
### Layout::new() now accepts direction and constraint parameters ([#557])
[#557]: https://github.com/ratatui/ratatui/pull/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.
@@ -719,18 +257,18 @@ let layout = layout::default()
let layout = layout::new(Direction::Vertical, [Constraint::Min(1), Constraint::Max(2)]);
```
## [v0.24.0](https://github.com/ratatui/ratatui/releases/tag/v0.24.0)
## [v0.24.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.24.0)
### `ScrollbarState` field type changed from `u16` to `usize` ([#456])
### ScrollbarState field type changed from `u16` to `usize` ([#456])
[#456]: https://github.com/ratatui/ratatui/pull/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/ratatui/issues/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
@@ -744,7 +282,7 @@ Applications can now set custom borders on a `Block` by calling `border_set()`.
### Generic `Backend` parameter removed from `Frame` ([#530])
[#530]: https://github.com/ratatui/ratatui/issues/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
@@ -758,7 +296,7 @@ instance of a Frame. E.g.:
### `Stylize` shorthands now consume rather than borrow `String` ([#466])
[#466]: https://github.com/ratatui/ratatui/issues/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
@@ -776,7 +314,7 @@ longer compile. E.g.
### Deprecated `Spans` type removed (replaced with `Line`) ([#426])
[#426]: https://github.com/ratatui/ratatui/issues/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`.
@@ -789,11 +327,11 @@ longer compile. E.g.
+ buffer.set_line(0, 0, line, 10);
```
## [v0.23.0](https://github.com/ratatui/ratatui/releases/tag/v0.23.0)
## [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/ratatui/issues/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.
@@ -805,7 +343,7 @@ The track symbol of `Scrollbar` is now optional, this method now takes an option
### `Scrollbar` symbols moved to `symbols::scrollbar` and `widgets::scrollbar` module is private ([#330])
[#330]: https://github.com/ratatui/ratatui/issues/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
@@ -819,31 +357,31 @@ new module locations. E.g.:
### MSRV updated to 1.67 ([#361])
[#361]: https://github.com/ratatui/ratatui/issues/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/ratatui/releases/tag/v0.22.0)
## [v0.22.0](https://github.com/ratatui-org/ratatui/releases/tag/v0.22.0)
### `bitflags` updated to 2.3 ([#205])
### bitflags updated to 2.3 ([#205])
[#205]: https://github.com/ratatui/ratatui/issues/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`
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/ratatui/releases/tag/v0.21.0)
## [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/ratatui/issues/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/ratatui/issues/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.
@@ -860,11 +398,11 @@ let terminal = Terminal::with_options(backend, TerminalOptions {
### Code that binds `Into<Text<'a>>` now requires type annotations ([#168])
[#168]: https://github.com/ratatui/ratatui/issues/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
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.:
to_string() / to_owned() / as_str() on the value. E.g.:
```diff
- let paragraph = Paragraph::new("".as_ref());
@@ -874,7 +412,7 @@ previously did not need to use type annotations to fail to compile. To fix this,
### `Marker::Block` now renders as a block rather than a bar character ([#133])
[#133]: https://github.com/ratatui/ratatui/issues/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
@@ -886,20 +424,20 @@ the existing code.
+ let canvas = Canvas::default().marker(Marker::Bar);
```
## [v0.20.0](https://github.com/ratatui/ratatui/releases/tag/v0.20.0)
## [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/ratatui/issues/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/ratatui/issues/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.

File diff suppressed because it is too large Load Diff

View File

@@ -1,128 +0,0 @@
# Contributor Covenant Code of Conduct
## Our Pledge
We as members, contributors, and leaders pledge to make participation in our
community a harassment-free experience for everyone, regardless of age, body
size, visible or invisible disability, ethnicity, sex characteristics, gender
identity and expression, level of experience, education, socio-economic status,
nationality, personal appearance, race, religion, or sexual identity
and orientation.
We pledge to act and interact in ways that contribute to an open, welcoming,
diverse, inclusive, and healthy community.
## Our Standards
Examples of behavior that contributes to a positive environment for our
community include:
* Demonstrating empathy and kindness toward other people
* Being respectful of differing opinions, viewpoints, and experiences
* Giving and gracefully accepting constructive feedback
* Accepting responsibility and apologizing to those affected by our mistakes,
and learning from the experience
* Focusing on what is best not just for us as individuals, but for the
overall community
Examples of unacceptable behavior include:
* The use of sexualized language or imagery, and sexual attention or
advances of any kind
* Trolling, insulting or derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or email
address, without their explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Enforcement Responsibilities
Community leaders are responsible for clarifying and enforcing our standards of
acceptable behavior and will take appropriate and fair corrective action in
response to any behavior that they deem inappropriate, threatening, offensive,
or harmful.
Community leaders have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned to this Code of Conduct, and will communicate reasons for moderation
decisions when appropriate.
## Scope
This Code of Conduct applies within all community spaces, and also applies when
an individual is officially representing the community in public spaces.
Examples of representing our community include using an official e-mail address,
posting via an official social media account, or acting as an appointed
representative at an online or offline event.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported to the community leaders responsible for enforcement at
https://forum.ratatui.rs/ or https://discord.gg/pMCEU9hNEj.
All complaints will be reviewed and investigated promptly and fairly.
All community leaders are obligated to respect the privacy and security of the
reporter of any incident.
## Enforcement Guidelines
Community leaders will follow these Community Impact Guidelines in determining
the consequences for any action they deem in violation of this Code of Conduct:
### 1. Correction
**Community Impact**: Use of inappropriate language or other behavior deemed
unprofessional or unwelcome in the community.
**Consequence**: A private, written warning from community leaders, providing
clarity around the nature of the violation and an explanation of why the
behavior was inappropriate. A public apology may be requested.
### 2. Warning
**Community Impact**: A violation through a single incident or series
of actions.
**Consequence**: A warning with consequences for continued behavior. No
interaction with the people involved, including unsolicited interaction with
those enforcing the Code of Conduct, for a specified period of time. This
includes avoiding interactions in community spaces as well as external channels
like social media. Violating these terms may lead to a temporary or
permanent ban.
### 3. Temporary Ban
**Community Impact**: A serious violation of community standards, including
sustained inappropriate behavior.
**Consequence**: A temporary ban from any sort of interaction or public
communication with the community for a specified period of time. No public or
private interaction with the people involved, including unsolicited interaction
with those enforcing the Code of Conduct, is allowed during this period.
Violating these terms may lead to a permanent ban.
### 4. Permanent Ban
**Community Impact**: Demonstrating a pattern of violation of community
standards, including sustained inappropriate behavior, harassment of an
individual, or aggression toward or disparagement of classes of individuals.
**Consequence**: A permanent ban from any sort of public interaction within
the community.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage],
version 2.0, available at
https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
Community Impact Guidelines were inspired by [Mozilla's code of conduct
enforcement ladder](https://github.com/mozilla/diversity).
[homepage]: https://www.contributor-covenant.org
For answers to common questions about this code of conduct, see the FAQ at
https://www.contributor-covenant.org/faq. Translations are available at
https://www.contributor-covenant.org/translations.

View File

@@ -8,7 +8,7 @@ creating a new issue before making the change, or starting a discussion on
## Reporting issues
Before reporting an issue on the [issue tracker](https://github.com/ratatui/ratatui/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.
@@ -17,10 +17,10 @@ found.
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
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
### 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
@@ -31,8 +31,8 @@ guarantee that the behavior is unchanged.
### Code formatting
Run `cargo xtask format` before committing to ensure that code is consistently formatted with
rustfmt. Configuration is in [`rustfmt.toml`](./rustfmt.toml).
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
@@ -54,11 +54,21 @@ describes the nature of the problem that the commit is solving and any unintuiti
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
Running `cargo xtask ci` before pushing will perform the same checks that we do in the CI process.
It's not mandatory to do this before pushing, however it may save you time to do so instead of
waiting for GitHub to run the checks.
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
@@ -71,22 +81,22 @@ in GitHub docs.
### Setup
TL;DR: Clone the repo and build it using `cargo xtask`.
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-xtask](https://github.com/matklad/cargo-xtask). It wraps common `cargo` commands with sane
[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 xtask build`.
`cargo make build`.
```shell
git clone https://github.com/ratatui/ratatui.git
git clone https://github.com/ratatui-org/ratatui.git
cd ratatui
cargo xtask build
cargo make build
```
### Tests
The [test coverage](https://app.codecov.io/gh/ratatui/ratatui) of the crate is reasonably
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
@@ -110,8 +120,7 @@ exist to show coverage directly in your editor. E.g.:
### Documentation
Here are some guidelines for writing documentation in Ratatui.
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
@@ -124,9 +133,10 @@ the concepts pointing to the various methods. Focus on interaction with various
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:
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();
@@ -136,7 +146,7 @@ let style = Style::default().fg(Color::Red).add_modifier(Modifiers::BOLD);
#### Format
- First line is summary, second is blank, third onward is more detail
- First line is summary, second is blank, third onward is more detail
```rust
/// Summary
@@ -146,10 +156,10 @@ let style = Style::default().fg(Color::Red).add_modifier(Modifiers::BOLD);
fn foo() {}
```
- Max line length is 100 characters
See [VS Code rewrap extension](https://marketplace.visualstudio.com/items?itemName=stkb.rewrap)
- Max line length is 100 characters
See [vscode rewrap extension](https://marketplace.visualstudio.com/items?itemName=stkb.rewrap)
- Doc comments are above macros
- Doc comments are above macros
i.e.
```rust
@@ -158,31 +168,31 @@ i.e.
struct Foo {}
```
- Code items should be between backticks
- 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
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
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/ratatui/discussions/66) for more about the decision.
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:
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 xtask ci` which will offer you
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`
@@ -191,12 +201,12 @@ This project was forked from [`tui-rs`](https://github.com/fdehau/tui-rs/) in Fe
[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
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, implemented many of the smaller ones, and
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/ratatui/pulls?q=is%3Apr+is%3Aopen+label%3A%22imported+from+tui%22).
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.

4428
Cargo.lock generated

File diff suppressed because it is too large Load Diff

View File

@@ -1,99 +1,288 @@
[workspace]
resolver = "2"
members = ["ratatui", "ratatui-*", "xtask", "examples/apps/*"]
default-members = [
"ratatui",
"ratatui-core",
"ratatui-crossterm",
# this is not included as it doesn't compile on windows
# "ratatui-termion",
"ratatui-macros",
"ratatui-termwiz",
"ratatui-widgets",
"examples/apps/*",
]
[workspace.package]
[package]
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/"
repository = "https://github.com/ratatui/ratatui"
homepage = "https://ratatui.rs"
keywords = ["tui", "terminal", "dashboard"]
categories = ["command-line-interface"]
repository = "https://github.com/ratatui-org/ratatui"
readme = "README.md"
license = "MIT"
exclude = ["assets/*", ".github", "Makefile.toml", "CONTRIBUTING.md", "*.log", "tags"]
exclude = [
"assets/*",
".github",
"Makefile.toml",
"CONTRIBUTING.md",
"*.log",
"tags",
]
autoexamples = true
edition = "2021"
rust-version = "1.74.0"
rust-version = "1.70.0"
[workspace.dependencies]
bitflags = "2.7.0"
color-eyre = "0.6.3"
crossterm = "0.28.1"
document-features = "0.2.7"
indoc = "2.0.5"
instability = "0.3.7"
itertools = "0.13.0"
pretty_assertions = "1.4.1"
ratatui = { path = "ratatui", version = "0.30.0-alpha.1" }
ratatui-core = { path = "ratatui-core", version = "0.1.0-alpha.2" }
ratatui-crossterm = { path = "ratatui-crossterm", version = "0.1.0-alpha.1" }
ratatui-macros = { path = "ratatui-macros", version = "0.7.0-alpha.0" }
ratatui-termion = { path = "ratatui-termion", version = "0.1.0-alpha.1" }
ratatui-termwiz = { path = "ratatui-termwiz", version = "0.1.0-alpha.1" }
ratatui-widgets = { path = "ratatui-widgets", version = "0.3.0-alpha.1" }
rstest = "0.24.0"
serde = { version = "1.0.217", features = ["derive"] }
serde_json = "1.0.138"
strum = { version = "0.26.3", features = ["derive"] }
termion = "4.0.0"
termwiz = { version = "0.22.0" }
unicode-segmentation = "1.12.0"
# See <https://github.com/ratatui/ratatui/issues/1271> for information about why we pin unicode-width
unicode-width = "=0.2.0"
[badges]
# Improve benchmark consistency
[profile.bench]
codegen-units = 1
lto = true
[dependencies]
crossterm = { version = "0.27", optional = true }
termion = { version = "3.0", optional = true }
termwiz = { version = "0.20.0", optional = true }
[workspace.lints.rust]
unsafe_code = "forbid"
serde = { version = "1", optional = true, features = ["derive"] }
bitflags = "2.3"
cassowary = "0.3"
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"
document-features = { version = "0.2.7", optional = true }
lru = "0.12.0"
stability = "0.1.1"
[workspace.lints.clippy]
pedantic = { level = "warn", priority = -1 }
cast_possible_truncation = "allow"
cast_possible_wrap = "allow"
cast_precision_loss = "allow"
cast_sign_loss = "allow"
missing_errors_doc = "allow"
missing_panics_doc = "allow"
module_name_repetitions = "allow"
must_use_candidate = "allow"
[dev-dependencies]
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"
# we often split up a module into multiple files with the main type in a file named after the
# module, so we want to allow this pattern
module_inception = "allow"
[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"]
# nursery or restricted
as_underscore = "warn"
deref_by_slicing = "warn"
else_if_without_else = "warn"
empty_line_after_doc_comments = "warn"
equatable_if_let = "warn"
fn_to_numeric_cast_any = "warn"
format_push_string = "warn"
map_err_ignore = "warn"
missing_const_for_fn = "warn"
mixed_read_write_in_expression = "warn"
mod_module_files = "warn"
needless_pass_by_ref_mut = "warn"
needless_raw_strings = "warn"
or_fun_call = "warn"
redundant_type_annotations = "warn"
rest_pat_in_fully_bound_structs = "warn"
string_lit_chars_any = "warn"
string_slice = "warn"
string_to_string = "warn"
unnecessary_self_imports = "warn"
use_self = "warn"
#! 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"]
## 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 = "barchart"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
name = "block"
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"
required-features = ["crossterm"]
doc-scrape-examples = true
[[example]]
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

@@ -1,7 +0,0 @@
{
"drips": {
"ethereum": {
"ownedBy": "0x6053C8984f4F214Ad12c4653F28514E1E09213B5"
}
}
}

View File

@@ -1,7 +1,7 @@
The MIT License (MIT)
Copyright (c) 2016-2022 Florian Dehau
Copyright (c) 2023-2025 The Ratatui Developers
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

View File

@@ -1,15 +0,0 @@
# Maintainers
This file documents current and past maintainers.
- [orhun](https://github.com/orhun)
- [joshka](https://github.com/joshka)
- [kdheepak](https://github.com/kdheepak)
- [Valentin271](https://github.com/Valentin271)
## Past Maintainers
- [fdehau](https://github.com/fdehau)
- [mindoodoo](https://github.com/mindoodoo)
- [sayanarijit](https://github.com/sayanarijit)
- [EdJoPaTo](https://github.com/EdJoPaTo)

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
'''

531
README.md
View File

@@ -1,170 +1,441 @@
<details>
<summary>Table of Contents</summary>
- [Quickstart](#quickstart)
- [Documentation](#documentation)
- [Templates](#templates)
- [Built with Ratatui](#built-with-ratatui)
- [Alternatives](#alternatives)
- [Contributing](#contributing)
- [Acknowledgements](#acknowledgements)
- [License](#license)
- [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)
</details>
![Demo](https://github.com/ratatui/ratatui/blob/87ae72dbc756067c97f6400d3e2a58eeb383776e/examples/demo2-destroy.gif?raw=true)
<!-- cargo-rdme start -->
![Demo](https://github.com/ratatui-org/ratatui/blob/1d39444e3dea6f309cf9035be2417ac711c1abc9/examples/demo2-destroy.gif?raw=true)
<div align="center">
[![Crate Badge]][Crate] [![Repo Badge]][Repo] [![Docs Badge]][Docs] [![License Badge]][License] \
[![CI Badge]][CI] [![Deps Badge]][Deps] [![Codecov Badge]][Codecov] [![Sponsors Badge]][Sponsors] \
[Ratatui Website] · [Docs] · [Widget Examples] · [App Examples] · [Changelog] \
[Breaking Changes] · [Contributing] · [Report a bug] · [Request a Feature]
[![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>
[Ratatui Website] · [API Docs] · [Examples] · [Changelog] · [Breaking Changes]<br>
[Contributing] · [Report a bug] · [Request a Feature] · [Create a Pull Request]
</div>
[Ratatui][Ratatui Website] (_ˌræ.təˈtu.i_) is a Rust crate for cooking up terminal user interfaces
(TUIs). It provides a simple and flexible way to create text-based user interfaces in the terminal,
which can be used for command-line applications, dashboards, and other interactive console programs.
# Ratatui
## Quickstart
[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.
Ratatui has [templates] available to help you get started quickly. You can use the
[`cargo-generate`] command to create a new project with Ratatui:
## Installation
Add `ratatui` and `crossterm` as dependencies to your cargo.toml:
```shell
cargo install --locked cargo-generate
cargo generate ratatui/templates
cargo add ratatui crossterm
```
Selecting the Hello World template produces the following application:
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]).
```rust
use color_eyre::Result;
use crossterm::event::{self, Event};
use ratatui::{DefaultTerminal, Frame};
## Introduction
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let result = run(terminal);
ratatui::restore();
result
}
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.
fn run(mut terminal: DefaultTerminal) -> Result<()> {
loop {
terminal.draw(render)?;
if matches!(event::read()?, Event::Key(_)) {
break Ok(());
}
}
}
## Other documentation
fn render(frame: &mut Frame) {
frame.render_widget("hello world", frame.area());
}
```
## Documentation
- [Docs] - the full API documentation for the library on docs.rs.
- [Ratatui Website] - explains the library's concepts and provides step-by-step tutorials.
- [Ratatui Forum] - a place to ask questions and discuss the library.
- [Widget Examples] - a collection of examples that demonstrate how to use the library.
- [App Examples] - a collection of more complex examples that demonstrate how to build apps.
- [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.
You can also watch the [EuroRust 2024 talk] to learn about common concepts in Ratatui and what's
possible to build with it.
## Quickstart
## Templates
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.
If you're looking to get started quickly, you can use one of the available templates from the
[templates] repository using [`cargo-generate`]:
Every application built with `ratatui` needs to implement the following steps:
```shell
cargo generate ratatui/templates
- 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(),
);
}
```
## Built with Ratatui
Running this example produces the following output:
[![Awesome](https://awesome.re/badge-flat2.svg)][awesome-ratatui]
![docsrs-hello]
Check out the [showcase] section of the website, or the [awesome-ratatui] repository for a curated
list of awesome apps and libraries built with Ratatui!
## 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],
);
}
```
Running this example produces the following output:
![docsrs-layout]
## Text and styling
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.
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.
```rust
use ratatui::{prelude::*, widgets::*};
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());
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]);
}
```
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
- [Cursive](https://crates.io/crates/cursive) - a ncurses-based TUI library.
- [iocraft](https://crates.io/crates/iocraft) - a declarative TUI library.
You might want to checkout [Cursive](https://github.com/gyscos/Cursive) for an alternative solution
to build text user interfaces in Rust.
## Contributing
## Acknowledgments
[![Discord Badge]][Discord Server] [![Matrix Badge]][Matrix] [![Forum Badge]][Ratatui Forum]
Feel free to join our [Discord server](https://discord.gg/pMCEU9hNEj) for discussions and questions!
There is also a [Matrix](https://matrix.org/) bridge available at
[#ratatui:matrix.org](https://matrix.to/#/#ratatui:matrix.org). We have also recently launched the
[Ratatui Forum].
We rely on GitHub for [bugs][Report a bug] and [feature requests][Request a Feature].
Please make sure you read the [contributing](./CONTRIBUTING.md) guidelines before [creating a pull
request][Create a Pull Request].
## Acknowledgements
Ratatui was forked from the [tui-rs] crate in 2023 in order to continue its development. None of
this could be possible without [Florian Dehau] who originally created [tui-rs] which inspired many
Rust TUIs.
Special thanks to [Pavel Fomchenkov] for his work in designing an awesome logo for the Ratatui
project and organization.
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
This project is licensed under the [MIT License][License].
[Repo]: https://github.com/ratatui/ratatui
[Ratatui Website]: https://ratatui.rs/
[Ratatui Forum]: https://forum.ratatui.rs
[Docs]: https://docs.rs/ratatui
[Widget Examples]: https://github.com/ratatui/ratatui/tree/main/ratatui-widgets/examples
[App Examples]: https://github.com/ratatui/ratatui/tree/main/examples
[Changelog]: https://github.com/ratatui/ratatui/blob/main/CHANGELOG.md
[git-cliff]: https://git-cliff.org
[Conventional Commits]: https://www.conventionalcommits.org
[Breaking Changes]: https://github.com/ratatui/ratatui/blob/main/BREAKING-CHANGES.md
[EuroRust 2024 talk]: https://www.youtube.com/watch?v=hWG51Mc1DlM
[Report a bug]: https://github.com/ratatui/ratatui/issues/new?labels=bug&projects=&template=bug_report.md
[Request a Feature]: https://github.com/ratatui/ratatui/issues/new?labels=enhancement&projects=&template=feature_request.md
[Create a Pull Request]: https://github.com/ratatui/ratatui/compare
[Contributing]: https://github.com/ratatui/ratatui/blob/main/CONTRIBUTING.md
[Crate]: https://crates.io/crates/ratatui
[tui-rs]: https://crates.io/crates/tui
[Sponsors]: https://github.com/sponsors/ratatui
[Crate Badge]: https://img.shields.io/crates/v/ratatui?logo=rust&style=flat-square&color=E05D44
[Repo Badge]: https://img.shields.io/badge/repo-ratatui/ratatui-1370D3?style=flat-square&logo=github
[License Badge]: https://img.shields.io/crates/l/ratatui?style=flat-square&color=1370D3
[CI Badge]: https://img.shields.io/github/actions/workflow/status/ratatui/ratatui/ci.yml?style=flat-square&logo=github
[CI]: https://github.com/ratatui/ratatui/actions/workflows/ci.yml
[Codecov Badge]: https://img.shields.io/codecov/c/github/ratatui/ratatui?logo=codecov&style=flat-square&token=BAQ8SOKEST&color=C43AC3
[Codecov]: https://app.codecov.io/gh/ratatui/ratatui
[Deps Badge]: https://deps.rs/repo/github/ratatui/ratatui/status.svg?path=ratatui&style=flat-square
[Deps]: https://deps.rs/repo/github/ratatui/ratatui?path=ratatui
[Discord Badge]: https://img.shields.io/discord/1070692720437383208?label=discord&logo=discord&style=flat-square&color=1370D3&logoColor=1370D3
[Discord Server]: https://discord.gg/pMCEU9hNEj
[Docs Badge]: https://img.shields.io/badge/docs-ratatui-1370D3?style=flat-square&logo=rust
[Matrix Badge]: https://img.shields.io/matrix/ratatui-general%3Amatrix.org?style=flat-square&logo=matrix&label=Matrix&color=C43AC3
[Matrix]: https://matrix.to/#/#ratatui:matrix.org
[Forum Badge]: https://img.shields.io/discourse/likes?server=https%3A%2F%2Fforum.ratatui.rs&style=flat-square&logo=discourse&label=forum&color=C43AC3
[Sponsors Badge]: https://img.shields.io/github/sponsors/ratatui?logo=github&style=flat-square&color=1370D3
[templates]: https://github.com/ratatui/templates/
[showcase]: https://ratatui.rs/showcase/
[awesome-ratatui]: https://github.com/ratatui/awesome-ratatui
[Pavel Fomchenkov]: https://github.com/nawok
[Florian Dehau]: https://github.com/fdehau
[`cargo-generate`]: https://crates.io/crates/cargo-generate
[License]: ./LICENSE
[MIT](./LICENSE)

View File

@@ -1,12 +1,5 @@
# Creating a Release
Our release strategy is:
> Release major versions with detailed summaries when necessary, while releasing minor versions
> weekly or as needed without extensive announcements.
>
> Versioning scheme being `0.x.y`, where `x` is the major version and `y` is the minor version.
[crates.io](https://crates.io/crates/ratatui) releases are automated via [GitHub
actions](.github/workflows/cd.yml) and triggered by pushing a tag.
@@ -19,7 +12,7 @@ actions](.github/workflows/cd.yml) and triggered by pushing a tag.
```
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/ratatui/blob/images/examples/demo2.gif> and
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.
@@ -28,16 +21,16 @@ actions](.github/workflows/cd.yml) and triggered by pushing a tag.
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[0.x.y]`
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/ratatui/actions) workflow to
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/ratatui/actions/workflows/cd.yml) workflow.
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
@@ -47,5 +40,5 @@ These releases will have whatever happened to be in main at the time of release,
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/ratatui/issues/147) and
[#359](https://github.com/ratatui/ratatui/pull/359) for more info on the alpha release process.
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.

View File

@@ -6,4 +6,4 @@ 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/ratatui/security/advisories/new>
To report secuirity vulnerability, please use the form at https://github.com/ratatui-org/ratatui/security/advisories/new

View File

@@ -8,69 +8,93 @@
default_job = "check"
[jobs.check]
command = ["cargo", "xtask", "check"]
command = ["cargo", "check", "--all-features", "--color", "always"]
need_stdout = false
[jobs.check-all]
command = ["cargo", "xtask", "check", "--all-features"]
command = ["cargo", "check", "--all-targets", "--all-features", "--color", "always"]
need_stdout = false
[jobs.check-crossterm]
command = ["cargo", "xtask", "check-backend", "crossterm"]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "crossterm"]
need_stdout = false
[jobs.check-termion]
command = ["cargo", "xtask", "check-backend", "termion"]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "termion"]
need_stdout = false
[jobs.check-termwiz]
command = ["cargo", "xtask", "check-backend", "termwiz"]
command = ["cargo", "check", "--color", "always", "--all-targets", "--no-default-features", "--features", "termwiz"]
need_stdout = false
[jobs.clippy-all]
command = ["cargo", "xtask", "clippy"]
[jobs.clippy]
command = [
"cargo", "clippy",
"--all-targets",
"--color", "always",
]
need_stdout = false
[jobs.test]
command = ["cargo", "xtask", "test"]
need_stdout = true
[jobs.test-unit]
command = ["cargo", "xtask", "test-libs"]
command = [
"cargo", "test",
"--all-features",
"--color", "always",
"--", "--color", "always", # see https://github.com/Canop/bacon/issues/124
]
need_stdout = true
[jobs.doc]
command = ["cargo", "xtask", "docs"]
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", "xtask", "docs", "--open"]
on_success = "job:doc"
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", "xtask", "coverage"]
command = [
"cargo", "llvm-cov",
"--lcov", "--output-path", "target/lcov.info",
"--all-features",
"--color", "always",
]
[jobs.coverage-unit-tests-only]
command = ["cargo", "xtask", "coverage", "--lib"]
[jobs.hack]
command = ["cargo", "xtask", "hack"]
[jobs.format]
command = ["cargo", "xtask", "format"]
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]
ctrl-h = "job:hack"
# alt-m = "job:my-job"
ctrl-c = "job:check-crossterm"
ctrl-t = "job:check-termion"
ctrl-w = "job:check-termwiz"
v = "job:coverage"
ctrl-v = "job:coverage-unit-tests-only"
u = "job:test-unit"
n = "job:nextest"
f = "job:format"
u = "job:coverage-unit-tests-only"

View File

@@ -1,22 +1,23 @@
use criterion::{criterion_group, Bencher, BenchmarkId, Criterion};
use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
use rand::Rng;
use ratatui::{
buffer::Buffer,
layout::{Direction, Rect},
layout::Rect,
prelude::Direction,
widgets::{Bar, BarChart, BarGroup, Widget},
};
/// Benchmark for rendering a barchart.
fn barchart(c: &mut Criterion) {
pub fn barchart(c: &mut Criterion) {
let mut group = c.benchmark_group("barchart");
let mut rng = rand::rng();
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}"))
.value(rng.random_range(0..data_count))
.label(format!("B{i}").into())
.value(rng.gen_range(0..data_count))
})
.collect();
@@ -58,14 +59,15 @@ fn barchart(c: &mut Criterion) {
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/ratatui/pull/377.
// 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);

64
benches/block.rs Normal file
View File

@@ -0,0 +1,64 @@
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);

View File

@@ -1,4 +1,4 @@
use criterion::{criterion_group, BatchSize, Bencher, BenchmarkId, Criterion};
use criterion::{criterion_group, criterion_main, BatchSize, Bencher, BenchmarkId, Criterion};
use ratatui::{
buffer::Buffer,
layout::Rect,
@@ -7,7 +7,7 @@ use ratatui::{
/// Benchmark for rendering a list.
/// It only benchmarks the render with a different amount of items.
fn list(c: &mut Criterion) {
pub fn list(c: &mut Criterion) {
let mut group = c.benchmark_group("list");
for line_count in [64, 2048, 16384] {
@@ -33,7 +33,7 @@ fn list(c: &mut Criterion) {
ListState::default()
.with_offset(line_count / 2)
.with_selected(Some(line_count / 2)),
);
)
},
);
}
@@ -45,28 +45,29 @@ fn list(c: &mut Criterion) {
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/ratatui/pull/377.
// 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/ratatui/pull/377.
// 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);

View File

@@ -1,4 +1,6 @@
use criterion::{black_box, criterion_group, BatchSize, Bencher, BenchmarkId, Criterion};
use criterion::{
black_box, criterion_group, criterion_main, BatchSize, Bencher, BenchmarkId, Criterion,
};
use ratatui::{
buffer::Buffer,
layout::Rect,
@@ -8,23 +10,22 @@ use ratatui::{
/// 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;
const PARAGRAPH_DEFAULT_HEIGHT: u16 = 50;
/// 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.
fn paragraph(c: &mut Criterion) {
pub fn paragraph(c: &mut Criterion) {
let mut group = c.benchmark_group("paragraph");
for line_count in [64, 2048, u16::MAX] {
for &line_count in [64, 2048, MAX_SCROLL_OFFSET].iter() {
let lines = random_lines(line_count);
let lines = lines.as_str();
let y_scroll = line_count - PARAGRAPH_DEFAULT_HEIGHT;
// 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)));
b.iter(|| Paragraph::new(black_box(lines)))
});
// render the paragraph with no scroll
@@ -37,14 +38,14 @@ fn paragraph(c: &mut Criterion) {
// 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((y_scroll / 2, 0)),
&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((y_scroll, 0)),
&Paragraph::new(lines).scroll((0u16, line_count)),
|bencher, paragraph| render(bencher, paragraph, NO_WRAP_WIDTH),
);
@@ -60,7 +61,7 @@ fn paragraph(c: &mut Criterion) {
BenchmarkId::new("render_wrap_scroll_full", line_count),
&Paragraph::new(lines)
.wrap(Wrap { trim: false })
.scroll((y_scroll, 0)),
.scroll((0u16, line_count)),
|bencher, paragraph| render(bencher, paragraph, WRAP_WIDTH),
);
}
@@ -69,16 +70,16 @@ fn paragraph(c: &mut Criterion) {
/// 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, PARAGRAPH_DEFAULT_HEIGHT));
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/ratatui/pull/377.
// 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
@@ -86,10 +87,11 @@ fn render(bencher: &mut Bencher, paragraph: &Paragraph, width: u16) {
/// 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 = i64::from(count);
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);

View File

@@ -1,4 +1,4 @@
use criterion::{criterion_group, Bencher, BenchmarkId, Criterion};
use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
use rand::Rng;
use ratatui::{
buffer::Buffer,
@@ -7,13 +7,13 @@ use ratatui::{
};
/// Benchmark for rendering a sparkline.
fn sparkline(c: &mut Criterion) {
pub fn sparkline(c: &mut Criterion) {
let mut group = c.benchmark_group("sparkline");
let mut rng = rand::rng();
let mut rng = rand::thread_rng();
for data_count in [64, 256, 2048] {
let data: Vec<u64> = (0..data_count)
.map(|_| rng.random_range(0..data_count))
.map(|_| rng.gen_range(0..data_count))
.collect();
// Render a basic sparkline
@@ -31,14 +31,15 @@ fn sparkline(c: &mut Criterion) {
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/ratatui/pull/377.
// 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);

View File

@@ -1,9 +1,4 @@
# git-cliff ~ configuration file
# https://git-cliff.org/docs/configuration
[remote.github]
owner = "ratatui"
repo = "ratatui"
# configuration for https://github.com/orhun/git-cliff
[changelog]
# changelog header
@@ -11,8 +6,6 @@ header = """
# Changelog
All notable changes to this project will be documented in this file.
<!-- ignore lint rules that are often triggered by content generated from commits / git-cliff -->
<!-- markdownlint-disable line-length no-bare-urls ul-style emphasis-style -->
"""
# template for the changelog body
# https://keats.github.io/tera/docs/#introduction
@@ -24,15 +17,26 @@ body = """
{%- if not version %}
## [unreleased]
{% else -%}
## {{ package }} - [{{ version }}]({{ release_link }}) - {{ timestamp | date(format="%Y-%m-%d") }}
## [{{ 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/ratatui/commit/" ~ commit.id }}) \
*({{commit.scope | default(value = "uncategorized") | lower }})* {{ commit.message | upper_first | trim }}\
{% if commit.remote.username %} by @{{ commit.remote.username }}{%- endif -%}\
{% if commit.remote.pr_number %} in [#{{ commit.remote.pr_number }}]({{ self::remote_url() }}/pull/{{ commit.remote.pr_number }}){%- endif %}\
- [{{ 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") %}
@@ -46,18 +50,6 @@ body = """
{%- endif -%}
{%- endfor -%}
{%- endfor %}
{% if version %}
{% if previous.version %}
**Full Changelog**: {{ release_link }}
{% endif %}
{% else -%}
{% raw %}\n{% endraw %}
{% endif %}
{%- macro remote_url() -%}
https://github.com/{{ remote.owner }}/{{ remote.repo }}\
{% endmacro %}
"""
@@ -67,11 +59,6 @@ trim = false
footer = """
<!-- generated by git-cliff -->
"""
postprocessors = [
{ pattern = '<!-- Please read CONTRIBUTING.md before submitting any pull request. -->', replace = "" },
{ pattern = '>---+\n', replace = '' },
{ pattern = ' +\n', replace = "\n" },
]
[git]
# parse the commits based on https://www.conventionalcommits.org
@@ -82,7 +69,7 @@ filter_unconventional = true
split_commits = false
# regex for preprocessing the commit messages
commit_preprocessors = [
{ pattern = '\((\w+\s)?#([0-9]+)\)', replace = "" },
{ 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}" },
@@ -111,7 +98,6 @@ commit_parsers = [
{ 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

View File

@@ -1 +0,0 @@
avoid-breaking-exported-api = false

View File

@@ -1,23 +1,23 @@
# configuration for https://github.com/EmbarkStudios/cargo-deny
[licenses]
version = 2
default = "deny"
unlicensed = "deny"
copyleft = "deny"
confidence-threshold = 0.8
allow = [
"Apache-2.0",
"BSD-2-Clause",
"BSD-3-Clause",
"ISC",
"MIT",
"OpenSSL",
"Unicode-3.0",
"Unicode-DFS-2016",
"WTFPL",
"Zlib",
"Apache-2.0",
"BSD-2-Clause",
"BSD-3-Clause",
"ISC",
"MIT",
"Unicode-DFS-2016",
"WTFPL",
]
[advisories]
version = 2
unmaintained = "deny"
yanked = "deny"
[bans]
multiple-versions = "allow"
@@ -26,15 +26,3 @@ multiple-versions = "allow"
unknown-registry = "deny"
unknown-git = "warn"
allow-registry = ["https://github.com/rust-lang/crates.io-index"]
[[licenses.clarify]]
crate = "ring"
# SPDX considers OpenSSL to encompass both the OpenSSL and SSLeay licenses
# https://spdx.org/licenses/OpenSSL.html
# ISC - Both BoringSSL and ring use this for their new files
# MIT - "Files in third_party/ have their own licenses, as described therein. The MIT
# license, for third_party/fiat, which, unlike other third_party directories, is
# compiled into non-test libraries, is included below."
# OpenSSL - Obviously
expression = "ISC AND MIT AND OpenSSL"
license-files = [{ path = "LICENSE", hash = 0xbd0eed23 }]

View File

@@ -1,235 +1,326 @@
# Examples
This folder contains examples that are more application focused.
There are also [widget examples] in `ratatui-widgets`.
[widget examples]: ../ratatui-widgets/examples
You can run these examples using:
```shell
cargo run -p example-name
```
This folder might use unreleased code. Consider viewing the examples in the `latest` branch instead
of the `main` branch for code which is guaranteed to work with the released ratatui version.
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 may be backwards incompatible changes in these examples, as they are designed to compile
> 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/ratatui/tree/v0.26.1/examples>.
> - If you're viewing this file on GitHub, 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. E.g. `git switch --detach v0.26.1`.
> - Use the latest [alpha version of Ratatui] in your app. These are released weekly on Saturdays.
> 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/ratatui"`
> 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.
## Design choices
## Demo2
The examples contain some opinionated choices in order to make it easier for newer rustaceans to
easily be productive in creating applications:
This is the demo example from the main README and crate page. Source: [demo2](./demo2/).
- Each example has an `App` struct, with methods that implement a main loop, handle events and drawing
the UI.
- We use `color_eyre` for handling errors and panics. See [How to use color-eyre with Ratatui] on the
website for more information about this.
- Common code is not extracted into a separate file. This makes each example self-contained and easy
to read as a whole.
```shell
cargo run --example=demo2 --features="crossterm widget-calendar"
```
[How to use color-eyre with Ratatui]: https://ratatui.rs/recipes/apps/color-eyre/
![Demo2][demo2.gif]
## Demo
This is the original demo example from the main README. It is available for each of the backends.
[Source](./apps/demo/).
This is the previous demo example from the main README. It is available for each of the backends. Source:
[demo.rs](./demo/).
![Demo](demo.gif)
```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
```
## Demo2
This is the demo example from the main README and crate page. [Source](./apps/demo2/).
![Demo2](demo2.gif)
## Async GitHub
Shows how to fetch data from GitHub API asynchronously. [Source](./apps/async-github/).
![Async GitHub demo][async-github.gif]
## Calendar Explorer
Shows how to render a calendar with different styles. [Source](./apps/calendar-explorer/).
![Calendar explorer demo][calendar-explorer.gif]
## Canvas
Shows how to render a canvas with different shapes. [Source](./apps/canvas/).
![Canvas demo][canvas.gif]
## Chart
Shows how to render line, bar, and scatter charts. [Source](./apps/chart/).
![Chart demo][chart.gif]
## Color Explorer
Shows how to handle the supported colors. [Source](./apps/color-explorer/).
![Color explorer demo][color-explorer.gif]
## Colors-RGB demo
Shows the full range of RGB colors in an animation. [Source](./apps/colors-rgb/).
![Colors-RGB demo][colors-rgb.gif]
## Constraint Explorer
Shows how different constraints can be used to layout widgets. [Source](./apps/constraint-explorer/).
![Constraint Explorer demo][constraint-explorer.gif]
## Constraints
Shows different types of constraints. [Source](./apps/constraints/).
![Constraints demo][constraints.gif]
## Custom Widget
Shows how to create a custom widget that can be interacted with the mouse. [Source](./apps/custom-widget/).
![Custom widget demo][custom-widget.gif]
## Hyperlink
Shows how to render hyperlinks in a terminal using [OSC
8](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda). [Source](./apps/hyperlink/).
![Hyperlink demo][hyperlink.gif]
## Flex
Shows how to use the flex layouts. [Source](./apps/flex/).
![Flex demo][flex.gif]
![Demo][demo.gif]
## Hello World
Shows how to create a simple TUI with a text. [Source](./apps/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).
![Hello World demo][hello-world.gif]
```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
Shows different types of gauges. [Source](./apps/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
Shows how to use the inlined viewport to render in a specific area of the screen. [Source](./apps/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).
![Inline demo][inline.gif]
```shell
cargo run --example=inline --features=crossterm
```
## Input Form
![Inline][inline.gif]
Shows how to render a form with input fields. [Source](./apps/input-form/).
## 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
Shows different types of modifiers. [Source](./apps/modifiers/).
Demonstrates the style
[`Modifiers`](https://docs.rs/ratatui/latest/ratatui/style/struct.Modifier.html). Source:
[modifiers.rs](./modifiers.rs).
![Modifiers demo][modifiers.gif]
```shell
cargo run --example=modifiers --features=crossterm
```
## Mouse Drawing
Shows how to handle mouse events. [Source](./apps/mouse-drawing/).
## Minimal
Shows how to create a minimal application. [Source](./apps/minimal/).
![Minimal demo][minimal.gif]
![Modifiers][modifiers.gif]
## Panic
Shows how to handle panics. [Source](./apps/panic/).
Demonstrates how to handle panics by ensuring that panic messages are written correctly to the
screen. Source: [panic.rs](./panic.rs).
![Panic demo][panic.gif]
```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
Shows how to handle popups. [Source](./apps/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).
![Popup demo][popup.gif]
>
```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
Shows how to render different types of scrollbars. [Source](./apps/scrollbar/).
Demonstrates the [`Scrollbar`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Scrollbar.html)
widget. Source: [scrollbar.rs](./scrollbar.rs).
![Scrollbar demo][scrollbar.gif]
```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
Shows how to create an interactive table. [Source](./apps/table/).
Demonstrates the [`Table`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Table.html) widget.
Source: [table.rs](./table.rs).
![Table demo][table.gif]
```shell
cargo run --example=table --features=crossterm
```
## Todo List
![Table][table.gif]
Shows how to create a simple todo list application. [Source](./apps/todo-list/).
## Tabs
![Todo List demo][todo-list.gif]
Demonstrates the [`Tabs`](https://docs.rs/ratatui/latest/ratatui/widgets/struct.Tabs.html) widget.
Source: [tabs.rs](./tabs.rs).
## Tracing
```shell
cargo run --example=tabs --features=crossterm
```
Shows how to use the [tracing](https://crates.io/crates/tracing) crate to log to a file. [Source](./apps/tracing/).
![Tracing demo][tracing.gif]
![Tabs][tabs.gif]
## User Input
Shows how to handle user input. [Source](./apps/user-input/). [Source](./apps/user-input/).
Demonstrates one approach to accepting user input. Source [user_input.rs](./user_input.rs).
![User input demo][user-input.gif]
> [!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.
## Weather
```shell
cargo run --example=user_input --features=crossterm
```
Shows how to render weather data using barchart widget. [Source](./apps/weather/).
![User Input][user_input.gif]
## WidgetRef Container
Shows how to use [`WidgetRef`](https://docs.rs/ratatui/latest/ratatui/widgets/trait.WidgetRef.html) to store widgets in a container. [Source](./apps/widget-ref-container/).
## Advanced Widget Implementation
Shows how to render the `Widget` trait in different ways.
![Advanced widget impl demo][advanced-widget-impl.gif]
---
<details>
<summary>How to update these examples?</summary>
## 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`
branch.
images themselves are stored in a separate `images` git branch to avoid bloating the main
repository.
<!--
@@ -237,36 +328,34 @@ Links to images to make them easier to update in bulk. Use the following script
the examples to the images branch. (Requires push access to the branch).
```shell
vhs/generate.bash
examples/generate.bash
```
-->
</details>
[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://github.com/ratatui-org/ratatui/blob/images/examples/table.gif?raw=true
[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
[advanced-widget-impl.gif]: https://github.com/ratatui/ratatui/blob/images/examples/advanced-widget-impl.gif?raw=true
[async-github.gif]: https://github.com/ratatui/ratatui/blob/images/examples/async-github.gif?raw=true
[calendar-explorer.gif]: https://github.com/ratatui/ratatui/blob/images/examples/calendar-explorer.gif?raw=true
[canvas.gif]: https://github.com/ratatui/ratatui/blob/images/examples/canvas.gif?raw=true
[chart.gif]: https://github.com/ratatui/ratatui/blob/images/examples/chart.gif?raw=true
[color-explorer.gif]: https://github.com/ratatui/ratatui/blob/images/examples/color-explorer.gif?raw=true
[colors-rgb.gif]: https://github.com/ratatui/ratatui/blob/images/examples/colors-rgb.gif?raw=true
[constraint-explorer.gif]: https://github.com/ratatui/ratatui/blob/images/examples/constraint-explorer.gif?raw=true
[constraints.gif]: https://github.com/ratatui/ratatui/blob/images/examples/constraints.gif?raw=true
[custom-widget.gif]: https://github.com/ratatui/ratatui/blob/images/examples/custom-widget.gif?raw=true
[demo2-destroy.gif]: https://github.com/ratatui/ratatui/blob/images/examples/demo2-destroy.gif?raw=true
[demo2-social.gif]: https://github.com/ratatui/ratatui/blob/images/examples/demo2-social.gif?raw=true
[demo2.gif]: https://github.com/ratatui/ratatui/blob/images/examples/demo2.gif?raw=true
[demo.gif]: https://github.com/ratatui/ratatui/blob/images/examples/demo.gif?raw=true
[flex.gif]: https://github.com/ratatui/ratatui/blob/images/examples/flex.gif?raw=true
[hello-world.gif]: https://github.com/ratatui/ratatui/blob/images/examples/hello-world.gif?raw=true
[hyperlink.gif]: https://github.com/ratatui/ratatui/blob/images/examples/hyperlink.gif?raw=true
[inline.gif]: https://github.com/ratatui/ratatui/blob/images/examples/inline.gif?raw=true
[minimal.gif]: https://github.com/ratatui/ratatui/blob/images/examples/minimal.gif?raw=true
[modifiers.gif]: https://github.com/ratatui/ratatui/blob/images/examples/modifiers.gif?raw=true
[panic.gif]: https://github.com/ratatui/ratatui/blob/images/examples/panic.gif?raw=true
[popup.gif]: https://github.com/ratatui/ratatui/blob/images/examples/popup.gif?raw=true
[scrollbar.gif]: https://github.com/ratatui/ratatui/blob/images/examples/scrollbar.gif?raw=true
[table.gif]: https://github.com/ratatui/ratatui/blob/images/examples/table.gif?raw=true
[todo-list.gif]: https://github.com/ratatui/ratatui/blob/images/examples/todo-list.gif?raw=true
[tracing.gif]: https://github.com/ratatui/ratatui/blob/images/examples/tracing.gif?raw=true
[user-input.gif]: https://github.com/ratatui/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

@@ -1,14 +0,0 @@
[package]
name = "advanced-widget-impl"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui = { workspace = true, features = ["unstable-widget-ref"] }
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Advanced Widget Implementation demo
This example shows how to render the `Widget` trait in different ways.
To run this demo:
```shell
cargo run -p advanced-widget-impl
```

View File

@@ -1,249 +0,0 @@
/// A Ratatui example that demonstrates how to implement the `Widget` trait.
///
/// This example demonstrates various ways to implement `Widget` traits in Ratatui on a type, a
/// reference, and a mutable reference. It also shows how to use the `WidgetRef` trait to
/// render boxed widgets.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::time::{Duration, Instant};
use color_eyre::Result;
use crossterm::event::{self, Event, KeyCode};
use ratatui::{
buffer::Buffer,
layout::{Constraint, Layout, Position, Rect, Size},
style::{Color, Style},
widgets::{Widget, WidgetRef},
DefaultTerminal,
};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let result = App::default().run(terminal);
ratatui::restore();
result
}
#[derive(Default)]
struct App {
should_quit: bool,
timer: Timer,
boxed_squares: BoxedSquares,
green_square: RightAlignedSquare,
}
impl App {
fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
while !self.should_quit {
self.draw(&mut terminal)?;
self.handle_events()?;
}
Ok(())
}
fn draw(&mut self, tui: &mut DefaultTerminal) -> Result<()> {
tui.draw(|frame| frame.render_widget(self, frame.area()))?;
Ok(())
}
fn handle_events(&mut self) -> Result<()> {
// Handle events at least 50 frames per second (gifs are usually 50fps)
let timeout = Duration::from_secs_f64(1.0 / 50.0);
if !event::poll(timeout)? {
return Ok(());
}
if let Event::Key(key) = event::read()? {
match key.code {
KeyCode::Char('q') | KeyCode::Esc => self.should_quit = true,
_ => {}
}
}
Ok(())
}
}
/// Implement the `Widget` trait on a mutable reference to the `App` type.
///
/// This allows the `App` type to be rendered as a widget. The `App` type owns several other widgets
/// that are rendered as part of the app. The `Widget` trait is implemented on a mutable reference
/// to the `App` type, which allows this to be rendered without consuming the `App` type, and allows
/// the sub-widgets to be mutable.
impl Widget for &mut App {
fn render(self, area: Rect, buf: &mut Buffer) {
let constraints = Constraint::from_lengths([1, 1, 2, 1]);
let [greeting, timer, squares, position] = Layout::vertical(constraints).areas(area);
// render an ephemeral greeting widget
Greeting::new("Ratatui!").render(greeting, buf);
// render a reference to the timer widget
self.timer.render(timer, buf);
// render a boxed widget containing red and blue squares
self.boxed_squares.render(squares, buf);
// render a mutable reference to the green square widget
self.green_square.render(squares, buf);
// Display the dynamically updated position of the green square
let square_position = format!("Green square is at {}", self.green_square.last_position);
square_position.render(position, buf);
}
}
/// An ephemeral greeting widget.
///
/// This widget is implemented on the type itself, which means that it is consumed when it is
/// rendered. This is useful for widgets that are cheap to create, don't need to be reused, and
/// don't need to store any state between renders. This is the simplest way to implement a widget in
/// Ratatui, but in most cases, it is better to implement the `Widget` trait on a reference to the
/// type, as shown in the other examples below.
///
/// This was the way most widgets were implemented in Ratatui before `Widget` was implemented on
/// references in [PR #903] (merged in Ratatui 0.26.0).
///
/// [PR #903]: https://github.com/ratatui/ratatui/pull/903
struct Greeting {
name: String,
}
impl Greeting {
fn new(name: &str) -> Self {
Self {
name: name.to_string(),
}
}
}
impl Widget for Greeting {
fn render(self, area: Rect, buf: &mut Buffer) {
let greeting = format!("Hello, {}!", self.name);
greeting.render(area, buf);
}
}
/// A timer widget that displays the elapsed time since the timer was started.
#[derive(Debug)]
struct Timer {
start: Instant,
}
impl Default for Timer {
fn default() -> Self {
Self {
start: Instant::now(),
}
}
}
/// This implements `Widget` on a reference to the type, which means that it can be reused and
/// doesn't need to be consumed when it is rendered. This is useful for widgets that need to store
/// state and be updated over time.
///
/// This approach was probably always available in Ratatui, but it wasn't widely used until `Widget`
/// was implemented on references in [PR #903] (merged in Ratatui 0.26.0). This is because all the
/// built-in widgets previously would consume themselves when rendered.
impl Widget for &Timer {
fn render(self, area: Rect, buf: &mut Buffer) {
let elapsed = self.start.elapsed().as_secs_f32();
let message = format!("Elapsed: {elapsed:.1?}s");
message.render(area, buf);
}
}
/// A widget that contains a list of several different widgets.
struct BoxedSquares {
squares: Vec<Box<dyn WidgetRef>>,
}
impl Default for BoxedSquares {
fn default() -> Self {
let red_square: Box<dyn WidgetRef> = Box::new(RedSquare);
let blue_square: Box<dyn WidgetRef> = Box::new(BlueSquare);
Self {
squares: vec![red_square, blue_square],
}
}
}
/// A widget that renders a red square.
struct RedSquare;
/// A widget that renders a blue square.
struct BlueSquare;
/// This implements the `Widget` trait on a reference to the type. It contains a list of boxed
/// widgets that implement the `WidgetRef` trait. This is useful for widgets that contain a list of
/// other widgets that can be different types.
impl Widget for &BoxedSquares {
fn render(self, area: Rect, buf: &mut Buffer) {
let constraints = vec![Constraint::Length(4); self.squares.len()];
let areas = Layout::horizontal(constraints).split(area);
for (widget, area) in self.squares.iter().zip(areas.iter()) {
widget.render_ref(*area, buf);
}
}
}
/// `RedSquare` and `BlueSquare` are widgets that render a red and blue square, respectively. They
/// implement the `WidgetRef` trait instead of the `Widget` trait, which which allows them to be
/// rendered as boxed widgets. It's not possible to use Widget for this as a dynamic reference to a
/// widget cannot generally be moved out of the box.
impl WidgetRef for RedSquare {
fn render_ref(&self, area: Rect, buf: &mut Buffer) {
fill(area, buf, "", Color::Red);
}
}
impl WidgetRef for BlueSquare {
fn render_ref(&self, area: Rect, buf: &mut Buffer) {
fill(area, buf, "", Color::Blue);
}
}
/// A widget that renders a green square aligned to the right of the area.
#[derive(Default)]
struct RightAlignedSquare {
last_position: Position,
}
/// This widget is implemented on a mutable reference to the type, which means that it can store
/// state and update it when it is rendered. This is useful for widgets that need to store the
/// result of some calculation that can only be done when the widget is rendered.
///
/// The x and y coordinates of the square are stored in the widget and updated when the widget is
/// rendered. This allows the square to be aligned to the right of the area. These coordinates could
/// be used to perform hit testing (e.g. checking if a mouse click is inside the square). This app
/// just displays the coordinates as a string.
///
/// This approach was probably always available in Ratatui, but it wasn't widely used either. This
/// is an alternative to implementing the `StatefulWidget` trait, for situations where you want to
/// store the state in the widget itself instead of a separate struct.
impl Widget for &mut RightAlignedSquare {
/// Render a green square aligned to the right of the area and store the position.
fn render(self, area: Rect, buf: &mut Buffer) {
const WIDTH: u16 = 4;
let x = area.right() - WIDTH; // Align to the right
self.last_position = Position { x, y: area.y };
let size = Size::new(WIDTH, area.height);
let area = Rect::from((self.last_position, size));
fill(area, buf, "", Color::Green);
}
}
/// Fill the area with the specified symbol and style.
///
/// This probably should be a method on the `Buffer` type, but it is defined here for simplicity.
/// <https://github.com/ratatui/ratatui/issues/1146>
fn fill<S: Into<Style>>(area: Rect, buf: &mut Buffer, symbol: &str, style: S) {
let style = style.into();
for y in area.top()..area.bottom() {
for x in area.left()..area.right() {
buf[(x, y)].set_symbol(symbol).set_style(style);
}
}
}

View File

@@ -1,22 +0,0 @@
[package]
name = "async-github"
version = "0.1.0"
authors.workspace = true
documentation.workspace = true
repository.workspace = true
homepage.workspace = true
keywords.workspace = true
categories.workspace = true
readme.workspace = true
license.workspace = true
exclude.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre = "0.6.3"
crossterm = { workspace = true, features = ["event-stream"] }
octocrab = "0.43.0"
ratatui.workspace = true
tokio = { version = "1.43.0", features = ["rt-multi-thread", "macros"] }
tokio-stream = "0.1.17"

View File

@@ -1,9 +0,0 @@
# Async GitHub demo
This example demonstrates how to use Ratatui with widgets that fetch data from GitHub API asynchronously.
To run this demo:
```shell
cargo run -p async-github
```

View File

@@ -1,243 +0,0 @@
//! # [Ratatui] Async example
//!
//! This example demonstrates how to use Ratatui with widgets that fetch data asynchronously. It
//! uses the `octocrab` crate to fetch a list of pull requests from the GitHub API.
//!
//! <https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-fine-grained-personal-access-token>
//! <https://github.com/settings/tokens/new> to create a new token (select classic, and no scopes)
//!
//! This example does not cover message passing between threads, it only demonstrates how to manage
//! shared state between the main thread and a background task, which acts mostly as a one-shot
//! fetcher. For more complex scenarios, you may need to use channels or other synchronization
//! primitives.
//!
//! A simple app might have multiple widgets that fetch data from different sources, and each widget
//! would have its own background task to fetch the data. The main thread would then render the
//! widgets with the latest data.
//!
//! The latest version of this example is available in the [examples] folder in the repository.
//!
//! Please note that the examples are designed to be run against the `main` branch of the Github
//! repository. This means that you may not be able to compile with the latest release version on
//! crates.io, or the one that you have installed locally.
//!
//! See the [examples readme] for more information on finding examples that match the version of the
//! library you are using.
//!
//! [Ratatui]: https://github.com/ratatui/ratatui
//! [examples]: https://github.com/ratatui/ratatui/blob/main/examples
//! [examples readme]: https://github.com/ratatui/ratatui/blob/main/examples/README.md
use std::{
sync::{Arc, RwLock},
time::Duration,
};
use color_eyre::Result;
use octocrab::{
params::{pulls::Sort, Direction},
Page,
};
use ratatui::{
buffer::Buffer,
crossterm::event::{Event, EventStream, KeyCode, KeyEventKind},
layout::{Constraint, Layout, Rect},
style::{Style, Stylize},
text::Line,
widgets::{Block, HighlightSpacing, Row, StatefulWidget, Table, TableState, Widget},
DefaultTerminal, Frame,
};
use tokio_stream::StreamExt;
#[tokio::main]
async fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::default().run(terminal).await;
ratatui::restore();
app_result
}
#[derive(Debug, Default)]
struct App {
should_quit: bool,
pull_requests: PullRequestListWidget,
}
impl App {
const FRAMES_PER_SECOND: f32 = 60.0;
pub async fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
self.pull_requests.run();
let period = Duration::from_secs_f32(1.0 / Self::FRAMES_PER_SECOND);
let mut interval = tokio::time::interval(period);
let mut events = EventStream::new();
while !self.should_quit {
tokio::select! {
_ = interval.tick() => { terminal.draw(|frame| self.draw(frame))?; },
Some(Ok(event)) = events.next() => self.handle_event(&event),
}
}
Ok(())
}
fn draw(&self, frame: &mut Frame) {
let vertical = Layout::vertical([Constraint::Length(1), Constraint::Fill(1)]);
let [title_area, body_area] = vertical.areas(frame.area());
let title = Line::from("Ratatui async example").centered().bold();
frame.render_widget(title, title_area);
frame.render_widget(&self.pull_requests, body_area);
}
fn handle_event(&mut self, event: &Event) {
if let Event::Key(key) = event {
if key.kind == KeyEventKind::Press {
match key.code {
KeyCode::Char('q') | KeyCode::Esc => self.should_quit = true,
KeyCode::Char('j') | KeyCode::Down => self.pull_requests.scroll_down(),
KeyCode::Char('k') | KeyCode::Up => self.pull_requests.scroll_up(),
_ => {}
}
}
}
}
}
/// A widget that displays a list of pull requests.
///
/// This is an async widget that fetches the list of pull requests from the GitHub API. It contains
/// an inner `Arc<RwLock<PullRequestListState>>` that holds the state of the widget. Cloning the
/// widget will clone the Arc, so you can pass it around to other threads, and this is used to spawn
/// a background task to fetch the pull requests.
#[derive(Debug, Clone, Default)]
struct PullRequestListWidget {
state: Arc<RwLock<PullRequestListState>>,
}
#[derive(Debug, Default)]
struct PullRequestListState {
pull_requests: Vec<PullRequest>,
loading_state: LoadingState,
table_state: TableState,
}
#[derive(Debug, Clone)]
struct PullRequest {
id: String,
title: String,
url: String,
}
#[derive(Debug, Clone, Default, PartialEq, Eq)]
enum LoadingState {
#[default]
Idle,
Loading,
Loaded,
Error(String),
}
impl PullRequestListWidget {
/// Start fetching the pull requests in the background.
///
/// This method spawns a background task that fetches the pull requests from the GitHub API.
/// The result of the fetch is then passed to the `on_load` or `on_err` methods.
fn run(&self) {
let this = self.clone(); // clone the widget to pass to the background task
tokio::spawn(this.fetch_pulls());
}
async fn fetch_pulls(self) {
// this runs once, but you could also run this in a loop, using a channel that accepts
// messages to refresh on demand, or with an interval timer to refresh every N seconds
self.set_loading_state(LoadingState::Loading);
match octocrab::instance()
.pulls("ratatui", "ratatui")
.list()
.sort(Sort::Updated)
.direction(Direction::Descending)
.send()
.await
{
Ok(page) => self.on_load(&page),
Err(err) => self.on_err(&err),
}
}
fn on_load(&self, page: &Page<OctoPullRequest>) {
let prs = page.items.iter().map(Into::into);
let mut state = self.state.write().unwrap();
state.loading_state = LoadingState::Loaded;
state.pull_requests.extend(prs);
if !state.pull_requests.is_empty() {
state.table_state.select(Some(0));
}
}
fn on_err(&self, err: &octocrab::Error) {
self.set_loading_state(LoadingState::Error(err.to_string()));
}
fn set_loading_state(&self, state: LoadingState) {
self.state.write().unwrap().loading_state = state;
}
fn scroll_down(&self) {
self.state.write().unwrap().table_state.scroll_down_by(1);
}
fn scroll_up(&self) {
self.state.write().unwrap().table_state.scroll_up_by(1);
}
}
type OctoPullRequest = octocrab::models::pulls::PullRequest;
impl From<&OctoPullRequest> for PullRequest {
fn from(pr: &OctoPullRequest) -> Self {
Self {
id: pr.number.to_string(),
title: pr.title.as_ref().unwrap().to_string(),
url: pr
.html_url
.as_ref()
.map(ToString::to_string)
.unwrap_or_default(),
}
}
}
impl Widget for &PullRequestListWidget {
fn render(self, area: Rect, buf: &mut Buffer) {
let mut state = self.state.write().unwrap();
// a block with a right aligned title with the loading state on the right
let loading_state = Line::from(format!("{:?}", state.loading_state)).right_aligned();
let block = Block::bordered()
.title("Pull Requests")
.title(loading_state)
.title_bottom("j/k to scroll, q to quit");
// a table with the list of pull requests
let rows = state.pull_requests.iter();
let widths = [
Constraint::Length(5),
Constraint::Fill(1),
Constraint::Max(49),
];
let table = Table::new(rows, widths)
.block(block)
.highlight_spacing(HighlightSpacing::Always)
.highlight_symbol(">>")
.row_highlight_style(Style::new().on_blue());
StatefulWidget::render(table, area, buf, &mut state.table_state);
}
}
impl From<&PullRequest> for Row<'_> {
fn from(pr: &PullRequest) -> Self {
let pr = pr.clone();
Row::new(vec![pr.id, pr.title, pr.url])
}
}

View File

@@ -1,15 +0,0 @@
[package]
name = "calendar-explorer"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
time = { version = "0.3.37", features = ["formatting", "parsing"] }
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Calendar explorer demo
This example shows how to render a calendar with different styles.
To run this demo:
```shell
cargo run -p calendar-explorer
```

View File

@@ -1,248 +0,0 @@
//! A Ratatui example that demonstrates how to render calendar with different styles.
//!
//! Marks the holidays and seasons on the calendar.
//!
//! This example runs with the Ratatui library code in the branch that you are currently reading.
//! See the [`latest`] branch for the code which works with the most recent Ratatui release.
//!
//! [`latest`]: https://github.com/ratatui/ratatui/tree/latest
//! [`BarChart`]: https://docs.rs/ratatui/latest/ratatui/widgets/struct.BarChart.html
use std::fmt;
use color_eyre::Result;
use crossterm::event::{self, Event, KeyCode, KeyEventKind};
use ratatui::{
layout::{Constraint, Layout, Margin, Rect},
style::{Color, Modifier, Style, Stylize},
text::{Line, Text},
widgets::calendar::{CalendarEventStore, Monthly},
DefaultTerminal, Frame,
};
use time::{ext::NumericalDuration, Date, Month, OffsetDateTime};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let result = run(terminal);
ratatui::restore();
result
}
/// Run the application.
fn run(mut terminal: DefaultTerminal) -> Result<()> {
let mut selected_date = OffsetDateTime::now_local()?.date();
let mut calendar_style = StyledCalendar::Default;
loop {
terminal.draw(|frame| render(frame, calendar_style, selected_date))?;
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
match key.code {
KeyCode::Char('q') => break Ok(()),
KeyCode::Char('s') => calendar_style = calendar_style.next(),
KeyCode::Char('n') | KeyCode::Tab => selected_date = next_month(selected_date),
KeyCode::Char('p') | KeyCode::BackTab => {
selected_date = previous_month(selected_date);
}
KeyCode::Char('h') | KeyCode::Left => selected_date -= 1.days(),
KeyCode::Char('j') | KeyCode::Down => selected_date += 1.weeks(),
KeyCode::Char('k') | KeyCode::Up => selected_date -= 1.weeks(),
KeyCode::Char('l') | KeyCode::Right => selected_date += 1.days(),
_ => {}
}
}
}
}
}
fn next_month(date: Date) -> Date {
if date.month() == Month::December {
date.replace_month(Month::January)
.unwrap()
.replace_year(date.year() + 1)
.unwrap()
} else {
date.replace_month(date.month().next()).unwrap()
}
}
fn previous_month(date: Date) -> Date {
if date.month() == Month::January {
date.replace_month(Month::December)
.unwrap()
.replace_year(date.year() - 1)
.unwrap()
} else {
date.replace_month(date.month().previous()).unwrap()
}
}
/// Draw the UI with a calendar.
fn render(frame: &mut Frame, calendar_style: StyledCalendar, selected_date: Date) {
let header = Text::from_iter([
Line::from("Calendar Example".bold()),
Line::from(
"<q> Quit | <s> Change Style | <n> Next Month | <p> Previous Month, <hjkl> Move",
),
Line::from(format!(
"Current date: {selected_date} | Current style: {calendar_style}"
)),
]);
let vertical = Layout::vertical([
Constraint::Length(header.height() as u16),
Constraint::Fill(1),
]);
let [text_area, area] = vertical.areas(frame.area());
frame.render_widget(header.centered(), text_area);
calendar_style
.render_year(frame, area, selected_date)
.unwrap();
}
#[derive(Debug, Clone, Copy)]
enum StyledCalendar {
Default,
Surrounding,
WeekdaysHeader,
SurroundingAndWeekdaysHeader,
MonthHeader,
MonthAndWeekdaysHeader,
}
impl StyledCalendar {
// Cycle through the different styles.
const fn next(self) -> Self {
match self {
Self::Default => Self::Surrounding,
Self::Surrounding => Self::WeekdaysHeader,
Self::WeekdaysHeader => Self::SurroundingAndWeekdaysHeader,
Self::SurroundingAndWeekdaysHeader => Self::MonthHeader,
Self::MonthHeader => Self::MonthAndWeekdaysHeader,
Self::MonthAndWeekdaysHeader => Self::Default,
}
}
}
impl fmt::Display for StyledCalendar {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Default => write!(f, "Default"),
Self::Surrounding => write!(f, "Show Surrounding"),
Self::WeekdaysHeader => write!(f, "Show Weekdays Header"),
Self::SurroundingAndWeekdaysHeader => write!(f, "Show Surrounding and Weekdays Header"),
Self::MonthHeader => write!(f, "Show Month Header"),
Self::MonthAndWeekdaysHeader => write!(f, "Show Month Header and Weekdays Header"),
}
}
}
impl StyledCalendar {
fn render_year(self, frame: &mut Frame, area: Rect, date: Date) -> Result<()> {
let events = events(date)?;
let area = area.inner(Margin {
vertical: 1,
horizontal: 1,
});
let rows = Layout::vertical([Constraint::Ratio(1, 3); 3]).split(area);
let areas = rows.iter().flat_map(|row| {
Layout::horizontal([Constraint::Ratio(1, 4); 4])
.split(*row)
.to_vec()
});
for (i, area) in areas.enumerate() {
let month = date
.replace_day(1)
.unwrap()
.replace_month(Month::try_from(i as u8 + 1).unwrap())
.unwrap();
self.render_month(frame, area, month, &events);
}
Ok(())
}
fn render_month(self, frame: &mut Frame, area: Rect, date: Date, events: &CalendarEventStore) {
let calendar = match self {
Self::Default => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default()),
Self::Surrounding => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default())
.show_surrounding(Style::new().dim()),
Self::WeekdaysHeader => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default())
.show_weekdays_header(Style::new().bold().green()),
Self::SurroundingAndWeekdaysHeader => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default())
.show_surrounding(Style::new().dim())
.show_weekdays_header(Style::new().bold().green()),
Self::MonthHeader => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default())
.show_month_header(Style::new().bold().green()),
Self::MonthAndWeekdaysHeader => Monthly::new(date, events)
.default_style(Style::new().bold().bg(Color::Rgb(50, 50, 50)))
.show_month_header(Style::default())
.show_weekdays_header(Style::new().bold().dim().light_yellow()),
};
frame.render_widget(calendar, area);
}
}
/// Makes a list of dates for the current year.
fn events(selected_date: Date) -> Result<CalendarEventStore> {
const SELECTED: Style = Style::new()
.fg(Color::White)
.bg(Color::Red)
.add_modifier(Modifier::BOLD);
const HOLIDAY: Style = Style::new()
.fg(Color::Red)
.add_modifier(Modifier::UNDERLINED);
const SEASON: Style = Style::new()
.fg(Color::Green)
.bg(Color::Black)
.add_modifier(Modifier::UNDERLINED);
let mut list = CalendarEventStore::today(
Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Blue),
);
let y = selected_date.year();
// new year's
list.add(Date::from_calendar_date(y, Month::January, 1)?, HOLIDAY);
// next new_year's for December "show surrounding"
list.add(Date::from_calendar_date(y + 1, Month::January, 1)?, HOLIDAY);
// groundhog day
list.add(Date::from_calendar_date(y, Month::February, 2)?, HOLIDAY);
// april fool's
list.add(Date::from_calendar_date(y, Month::April, 1)?, HOLIDAY);
// earth day
list.add(Date::from_calendar_date(y, Month::April, 22)?, HOLIDAY);
// star wars day
list.add(Date::from_calendar_date(y, Month::May, 4)?, HOLIDAY);
// festivus
list.add(Date::from_calendar_date(y, Month::December, 23)?, HOLIDAY);
// new year's eve
list.add(Date::from_calendar_date(y, Month::December, 31)?, HOLIDAY);
// seasons
// spring equinox
list.add(Date::from_calendar_date(y, Month::March, 22)?, SEASON);
// summer solstice
list.add(Date::from_calendar_date(y, Month::June, 21)?, SEASON);
// fall equinox
list.add(Date::from_calendar_date(y, Month::September, 22)?, SEASON);
// winter solstice
list.add(Date::from_calendar_date(y, Month::December, 21)?, SEASON);
// selected date
list.add(selected_date, SELECTED);
Ok(list)
}

View File

@@ -1,15 +0,0 @@
[package]
name = "canvas"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
itertools.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Canvas demo
This example shows how to render various shapes and a map on a canvas.
To run this demo:
```shell
cargo run -p canvas
```

View File

@@ -1,265 +0,0 @@
/// A Ratatui example that demonstrates how to draw on a canvas.
///
/// This example demonstrates how to draw various shapes such as rectangles, circles, and lines
/// on a canvas. It also demonstrates how to draw a map.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::{
io::stdout,
time::{Duration, Instant},
};
use color_eyre::Result;
use crossterm::{
event::{DisableMouseCapture, EnableMouseCapture, KeyEventKind},
ExecutableCommand,
};
use itertools::Itertools;
use ratatui::{
crossterm::event::{self, Event, KeyCode, MouseEventKind},
layout::{Constraint, Layout, Position, Rect},
style::{Color, Stylize},
symbols::Marker,
text::Text,
widgets::{
canvas::{Canvas, Circle, Map, MapResolution, Points, Rectangle},
Block, Widget,
},
DefaultTerminal, Frame,
};
fn main() -> Result<()> {
color_eyre::install()?;
stdout().execute(EnableMouseCapture)?;
let terminal = ratatui::init();
let app_result = App::new().run(terminal);
ratatui::restore();
stdout().execute(DisableMouseCapture)?;
app_result
}
struct App {
exit: bool,
x: f64,
y: f64,
ball: Circle,
playground: Rect,
vx: f64,
vy: f64,
marker: Marker,
points: Vec<Position>,
is_drawing: bool,
}
impl App {
const fn new() -> Self {
Self {
exit: false,
x: 0.0,
y: 0.0,
ball: Circle {
x: 20.0,
y: 40.0,
radius: 10.0,
color: Color::Yellow,
},
playground: Rect::new(10, 10, 200, 100),
vx: 1.0,
vy: 1.0,
marker: Marker::Dot,
points: vec![],
is_drawing: false,
}
}
pub fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
let tick_rate = Duration::from_millis(16);
let mut last_tick = Instant::now();
while !self.exit {
terminal.draw(|frame| self.draw(frame))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if event::poll(timeout)? {
match event::read()? {
Event::Key(key) => self.handle_key_press(key),
Event::Mouse(event) => self.handle_mouse_event(event),
_ => (),
}
}
if last_tick.elapsed() >= tick_rate {
self.on_tick();
last_tick = Instant::now();
}
}
Ok(())
}
fn handle_key_press(&mut self, key: event::KeyEvent) {
if key.kind != KeyEventKind::Press {
return;
}
match key.code {
KeyCode::Char('q') => self.exit = true,
KeyCode::Down | KeyCode::Char('j') => self.y += 1.0,
KeyCode::Up | KeyCode::Char('k') => self.y -= 1.0,
KeyCode::Right | KeyCode::Char('l') => self.x += 1.0,
KeyCode::Left | KeyCode::Char('h') => self.x -= 1.0,
KeyCode::Enter => {
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,
};
}
_ => {}
}
}
fn handle_mouse_event(&mut self, event: event::MouseEvent) {
match event.kind {
MouseEventKind::Down(_) => self.is_drawing = true,
MouseEventKind::Up(_) => self.is_drawing = false,
MouseEventKind::Drag(_) => {
self.points.push(Position::new(event.column, event.row));
}
_ => {}
}
}
fn on_tick(&mut self) {
// bounce the ball by flipping the velocity vector
let ball = &self.ball;
let playground = self.playground;
if ball.x - ball.radius < f64::from(playground.left())
|| ball.x + ball.radius > f64::from(playground.right())
{
self.vx = -self.vx;
}
if ball.y - ball.radius < f64::from(playground.top())
|| ball.y + ball.radius > f64::from(playground.bottom())
{
self.vy = -self.vy;
}
self.ball.x += self.vx;
self.ball.y += self.vy;
}
fn draw(&self, frame: &mut Frame) {
let header = Text::from_iter([
"Canvas Example".bold(),
"<q> Quit | <enter> Change Marker | <hjkl> Move".into(),
]);
let vertical = Layout::vertical([
Constraint::Length(header.height() as u16),
Constraint::Percentage(50),
Constraint::Percentage(50),
]);
let [text_area, up, down] = vertical.areas(frame.area());
frame.render_widget(header.centered(), text_area);
let horizontal =
Layout::horizontal([Constraint::Percentage(50), Constraint::Percentage(50)]);
let [draw, pong] = horizontal.areas(up);
let [map, boxes] = horizontal.areas(down);
frame.render_widget(self.map_canvas(), map);
frame.render_widget(self.draw_canvas(draw), draw);
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::bordered().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 draw_canvas(&self, area: Rect) -> impl Widget + '_ {
Canvas::default()
.block(Block::bordered().title("Draw here"))
.marker(self.marker)
.x_bounds([0.0, f64::from(area.width)])
.y_bounds([0.0, f64::from(area.height)])
.paint(move |ctx| {
let points = self
.points
.iter()
.map(|p| {
(
f64::from(p.x) - f64::from(area.left()),
f64::from(area.bottom()) - f64::from(p.y),
)
})
.collect_vec();
ctx.draw(&Points {
coords: &points,
color: Color::White,
});
})
}
fn pong_canvas(&self) -> impl Widget + '_ {
Canvas::default()
.block(Block::bordered().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 = 0.0;
let right = f64::from(area.width);
let bottom = 0.0;
let top = f64::from(area.height).mul_add(2.0, -4.0);
Canvas::default()
.block(Block::bordered().title("Rects"))
.marker(self.marker)
.x_bounds([left, right])
.y_bounds([bottom, top])
.paint(|ctx| {
for i in 0..=11 {
ctx.draw(&Rectangle {
x: f64::from(i * i + 3 * i) / 2.0 + 2.0,
y: 2.0,
width: f64::from(i),
height: f64::from(i),
color: Color::Red,
});
ctx.draw(&Rectangle {
x: f64::from(i * i + 3 * i) / 2.0 + 2.0,
y: 21.0,
width: f64::from(i),
height: f64::from(i),
color: Color::Blue,
});
}
for i in 0..100 {
if i % 10 != 0 {
ctx.print(f64::from(i) + 1.0, 0.0, format!("{i}", i = i % 10));
}
if i % 2 == 0 && i % 10 != 0 {
ctx.print(0.0, f64::from(i), format!("{i}", i = i % 10));
}
}
})
}
}

View File

@@ -1,14 +0,0 @@
[package]
name = "chart"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Chart demo
This example shows how to render line, bar, and scatter charts.
To run this demo:
```shell
cargo run -p chart
```

View File

@@ -1,354 +0,0 @@
/// A Ratatui example that demonstrates how to handle charts.
///
/// This example demonstrates how to draw various types of charts such as line, bar, and
/// scatter charts.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::time::{Duration, Instant};
use color_eyre::Result;
use ratatui::{
crossterm::event::{self, Event, KeyCode},
layout::{Constraint, Layout, Rect},
style::{Color, Modifier, Style, Stylize},
symbols::{self, Marker},
text::{Line, Span},
widgets::{Axis, Block, Chart, Dataset, GraphType, LegendPosition},
DefaultTerminal, Frame,
};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::new().run(terminal);
ratatui::restore();
app_result
}
struct App {
signal1: SinSignal,
data1: Vec<(f64, f64)>,
signal2: SinSignal,
data2: Vec<(f64, f64)>,
window: [f64; 2],
}
#[derive(Clone)]
struct SinSignal {
x: f64,
interval: f64,
period: f64,
scale: f64,
}
impl SinSignal {
const fn new(interval: f64, period: f64, scale: f64) -> Self {
Self {
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)
}
}
impl App {
fn new() -> Self {
let mut signal1 = SinSignal::new(0.2, 3.0, 18.0);
let mut signal2 = SinSignal::new(0.1, 2.0, 10.0);
let data1 = signal1.by_ref().take(200).collect::<Vec<(f64, f64)>>();
let data2 = signal2.by_ref().take(200).collect::<Vec<(f64, f64)>>();
Self {
signal1,
data1,
signal2,
data2,
window: [0.0, 20.0],
}
}
fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
let tick_rate = Duration::from_millis(250);
let mut last_tick = Instant::now();
loop {
terminal.draw(|frame| self.draw(frame))?;
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
if event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.code == KeyCode::Char('q') {
return Ok(());
}
}
}
if last_tick.elapsed() >= tick_rate {
self.on_tick();
last_tick = Instant::now();
}
}
}
fn on_tick(&mut self) {
self.data1.drain(0..5);
self.data1.extend(self.signal1.by_ref().take(5));
self.data2.drain(0..10);
self.data2.extend(self.signal2.by_ref().take(10));
self.window[0] += 1.0;
self.window[1] += 1.0;
}
fn draw(&self, frame: &mut Frame) {
let [top, bottom] = Layout::vertical([Constraint::Fill(1); 2]).areas(frame.area());
let [animated_chart, bar_chart] =
Layout::horizontal([Constraint::Fill(1), Constraint::Length(29)]).areas(top);
let [line_chart, scatter] = Layout::horizontal([Constraint::Fill(1); 2]).areas(bottom);
self.render_animated_chart(frame, animated_chart);
render_barchart(frame, bar_chart);
render_line_chart(frame, line_chart);
render_scatter(frame, scatter);
}
fn render_animated_chart(&self, frame: &mut Frame, area: Rect) {
let x_labels = vec![
Span::styled(
format!("{}", self.window[0]),
Style::default().add_modifier(Modifier::BOLD),
),
Span::raw(format!("{}", (self.window[0] + self.window[1]) / 2.0)),
Span::styled(
format!("{}", self.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(&self.data1),
Dataset::default()
.name("data3")
.marker(symbols::Marker::Braille)
.style(Style::default().fg(Color::Yellow))
.data(&self.data2),
];
let chart = Chart::new(datasets)
.block(Block::bordered())
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().fg(Color::Gray))
.labels(x_labels)
.bounds(self.window),
)
.y_axis(
Axis::default()
.title("Y Axis")
.style(Style::default().fg(Color::Gray))
.labels(["-20".bold(), "0".into(), "20".bold()])
.bounds([-20.0, 20.0]),
);
frame.render_widget(chart, area);
}
}
fn render_barchart(frame: &mut Frame, bar_chart: Rect) {
let dataset = Dataset::default()
.marker(symbols::Marker::HalfBlock)
.style(Style::new().fg(Color::Blue))
.graph_type(GraphType::Bar)
// a bell curve
.data(&[
(0., 0.4),
(10., 2.9),
(20., 13.5),
(30., 41.1),
(40., 80.1),
(50., 100.0),
(60., 80.1),
(70., 41.1),
(80., 13.5),
(90., 2.9),
(100., 0.4),
]);
let chart = Chart::new(vec![dataset])
.block(Block::bordered().title_top(Line::from("Bar chart").cyan().bold().centered()))
.x_axis(
Axis::default()
.style(Style::default().gray())
.bounds([0.0, 100.0])
.labels(["0".bold(), "50".into(), "100.0".bold()]),
)
.y_axis(
Axis::default()
.style(Style::default().gray())
.bounds([0.0, 100.0])
.labels(["0".bold(), "50".into(), "100.0".bold()]),
)
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
frame.render_widget(chart, bar_chart);
}
fn render_line_chart(frame: &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::bordered().title(Line::from("Line chart").cyan().bold().centered()))
.x_axis(
Axis::default()
.title("X Axis")
.style(Style::default().gray())
.bounds([0.0, 5.0])
.labels(["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(["0".bold(), "2.5".into(), "5.0".bold()]),
)
.legend_position(Some(LegendPosition::TopLeft))
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
frame.render_widget(chart, area);
}
fn render_scatter(frame: &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::bordered().title(Line::from("Scatter chart").cyan().bold().centered()))
.x_axis(
Axis::default()
.title("Year")
.bounds([1960., 2020.])
.style(Style::default().fg(Color::Gray))
.labels(["1960", "1990", "2020"]),
)
.y_axis(
Axis::default()
.title("Cost")
.bounds([0., 75000.])
.style(Style::default().fg(Color::Gray))
.labels(["0", "37 500", "75 000"]),
)
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
frame.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., 177_900.),
(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., 118_500.),
(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.),
];

View File

@@ -1,15 +0,0 @@
[package]
name = "color-explorer"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
itertools.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Color explorer demo
This example shows how to handle the supported colors.
To run this demo:
```shell
cargo run -p color-explorer
```

View File

@@ -1,15 +0,0 @@
[package]
name = "colors-rgb"
version = "0.1.0"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
palette = "0.7.6"
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Colors-RGB demo
This example shows the full range of RGB colors in an animation.
To run this demo:
```shell
cargo run -p colors-rgb
```

View File

@@ -1,246 +0,0 @@
//! A Ratatui example that 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.
//!
//! This example also demonstrates how implementing the Widget trait on a mutable reference
//! allows the widget to update its state while it is being rendered. This allows the fps
//! widget to update the fps calculation and the colors widget to update a cached version of
//! the colors to render instead of recalculating them every frame.
//!
//! This is an alternative to using the `StatefulWidget` trait and a separate state struct. It
//! is useful when the state is only used by the widget and doesn't need to be shared with
//! other widgets.
//!
//! This example runs with the Ratatui library code in the branch that you are currently reading.
//! See the [`latest`] branch for the code which works with the most recent Ratatui release.
//!
//! [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::time::{Duration, Instant};
use color_eyre::Result;
use palette::{convert::FromColorUnclamped, Okhsv, Srgb};
use ratatui::{
buffer::Buffer,
crossterm::event::{self, Event, KeyCode, KeyEventKind},
layout::{Constraint, Layout, Position, Rect},
style::Color,
text::Text,
widgets::Widget,
DefaultTerminal,
};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::default().run(terminal);
ratatui::restore();
app_result
}
#[derive(Debug, Default)]
struct App {
/// The current state of the app (running or quit)
state: AppState,
/// A widget that displays the current frames per second
fps_widget: FpsWidget,
/// A widget that displays the full range of RGB colors that can be displayed in the terminal.
colors_widget: ColorsWidget,
}
#[derive(Debug, Default, PartialEq, Eq)]
enum AppState {
/// The app is running
#[default]
Running,
/// The user has requested the app to quit
Quit,
}
/// A widget that displays the current frames per second
#[derive(Debug)]
struct FpsWidget {
/// The number of elapsed frames that have passed - used to calculate the fps
frame_count: usize,
/// The last instant that the fps was calculated
last_instant: Instant,
/// The current frames per second
fps: Option<f32>,
}
/// A widget that displays the full range of RGB colors that can be displayed in the terminal.
///
/// This widget is animated and will change colors over time.
#[derive(Debug, Default)]
struct ColorsWidget {
/// The colors to render - should be double the height of the area as we render two rows of
/// pixels for each row of the widget using the half block character. This is computed any time
/// the size of the widget changes.
colors: Vec<Vec<Color>>,
/// the number of elapsed frames that have passed - used to animate the colors by shifting the
/// x index by the frame number
frame_count: usize,
}
impl App {
/// Run the app
///
/// This is the main event loop for the app.
pub fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
while self.is_running() {
terminal.draw(|frame| frame.render_widget(&mut self, frame.area()))?;
self.handle_events()?;
}
Ok(())
}
const fn is_running(&self) -> bool {
matches!(self.state, AppState::Running)
}
/// Handle any events that have occurred since the last time the app was rendered.
///
/// Currently, this only handles the q key to quit the app.
fn handle_events(&mut self) -> Result<()> {
// Ensure that the app only blocks for a period that allows the app to render at
// approximately 60 FPS (this doesn't account for the time to render the frame, and will
// also update the app immediately any time an event occurs)
let timeout = Duration::from_secs_f32(1.0 / 60.0);
if event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press && key.code == KeyCode::Char('q') {
self.state = AppState::Quit;
};
}
}
Ok(())
}
}
/// Implement the Widget trait for &mut App so that it can be rendered
///
/// This is implemented on a mutable reference so that the app can update its state while it is
/// being rendered. This allows the fps widget to update the fps calculation and the colors widget
/// to update the colors to render.
impl Widget for &mut App {
fn render(self, area: Rect, buf: &mut Buffer) {
use Constraint::{Length, Min};
let [top, colors] = Layout::vertical([Length(1), Min(0)]).areas(area);
let [title, fps] = Layout::horizontal([Min(0), Length(8)]).areas(top);
Text::from("colors_rgb example. Press q to quit")
.centered()
.render(title, buf);
self.fps_widget.render(fps, buf);
self.colors_widget.render(colors, buf);
}
}
/// Default impl for `FpsWidget`
///
/// Manual impl is required because we need to initialize the `last_instant` field to the current
/// instant.
impl Default for FpsWidget {
fn default() -> Self {
Self {
frame_count: 0,
last_instant: Instant::now(),
fps: None,
}
}
}
/// Widget impl for `FpsWidget`
///
/// This is implemented on a mutable reference so that we can update the frame count and fps
/// calculation while rendering.
impl Widget for &mut FpsWidget {
fn render(self, area: Rect, buf: &mut Buffer) {
self.calculate_fps();
if let Some(fps) = self.fps {
let text = format!("{fps:.1} fps");
Text::from(text).render(area, buf);
}
}
}
impl FpsWidget {
/// Update the fps calculation.
///
/// This updates the fps once a second, but only if the widget has rendered at least 2 frames
/// since the last calculation. This avoids noise in the fps calculation when rendering on slow
/// machines that can't render at least 2 frames per second.
#[allow(clippy::cast_precision_loss)]
fn calculate_fps(&mut self) {
self.frame_count += 1;
let elapsed = self.last_instant.elapsed();
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();
}
}
}
/// Widget impl for `ColorsWidget`
///
/// This is implemented on a mutable reference so that we can update the frame count and store a
/// cached version of the colors to render instead of recalculating them every frame.
impl Widget for &mut ColorsWidget {
/// Render the widget
fn render(self, area: Rect, buf: &mut Buffer) {
self.setup_colors(area);
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() {
// render a half block character for each row of pixels with the foreground color
// set to the color of the pixel and the background color set to the color of the
// pixel below it
let fg = colors[yi * 2][xi];
let bg = colors[yi * 2 + 1][xi];
buf[Position::new(x, y)].set_char('▀').set_fg(fg).set_bg(bg);
}
}
self.frame_count += 1;
}
}
impl ColorsWidget {
/// Setup the colors to render.
///
/// This is called once per frame to setup the colors to render. It caches the colors so that
/// they don't need to be recalculated every frame.
#[allow(clippy::cast_precision_loss)]
fn setup_colors(&mut self, size: Rect) {
let Rect { width, height, .. } = size;
// double the height because each screen row has two rows of half block pixels
let height = height as usize * 2;
let width = width as usize;
// only update the colors if the size has changed since the last time we rendered
if self.colors.len() == height && self.colors[0].len() == width {
return;
}
self.colors = Vec::with_capacity(height);
for y in 0..height {
let mut row = Vec::with_capacity(width);
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);
}
}
}

View File

@@ -1,16 +0,0 @@
[package]
name = "constraint-explorer"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
itertools.workspace = true
ratatui.workspace = true
strum.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Constraint explorer demo
This interactive example shows how different constraints can be used to layout widgets.
To run this demo:
```shell
cargo run -p constraint-explorer
```

View File

@@ -1,601 +0,0 @@
/// A Ratatui example that demonstrates how different layout constraints work.
///
/// It also supports swapping constraints, adding and removing blocks, and changing the spacing
/// between blocks.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use color_eyre::Result;
use itertools::Itertools;
use ratatui::{
buffer::Buffer,
crossterm::event::{self, Event, KeyCode, KeyEventKind},
layout::{
Constraint::{self, Fill, Length, Max, Min, Percentage, Ratio},
Flex, Layout, Rect,
},
style::{
palette::tailwind::{BLUE, SKY, SLATE, STONE},
Color, Style, Stylize,
},
symbols::{self, line},
text::{Line, Span, Text},
widgets::{Block, Paragraph, Widget, Wrap},
DefaultTerminal,
};
use strum::{Display, EnumIter, FromRepr};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::default().run(terminal);
ratatui::restore();
app_result
}
#[derive(Default)]
struct App {
mode: AppMode,
spacing: u16,
constraints: Vec<Constraint>,
selected_index: usize,
value: u16,
}
#[derive(Debug, Default, PartialEq, Eq)]
enum AppMode {
#[default]
Running,
Quit,
}
/// A variant of [`Constraint`] that can be rendered as a tab.
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, EnumIter, FromRepr, Display)]
enum ConstraintName {
#[default]
Length,
Percentage,
Ratio,
Min,
Max,
Fill,
}
/// A widget that renders a [`Constraint`] as a block. E.g.:
/// ```plain
/// ┌──────────────┐
/// │ Length(16) │
/// │ 16px │
/// └──────────────┘
/// ```
struct ConstraintBlock {
constraint: Constraint,
legend: bool,
selected: bool,
}
/// A widget that renders a spacer with a label indicating the width of the spacer. E.g.:
///
/// ```plain
/// ┌ ┐
/// 8 px
/// └ ┘
/// ```
struct SpacerBlock;
// App behaviour
impl App {
fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
self.insert_test_defaults();
while self.is_running() {
terminal.draw(|frame| frame.render_widget(&self, frame.area()))?;
self.handle_events()?;
}
Ok(())
}
// TODO remove these - these are just for testing
fn insert_test_defaults(&mut self) {
self.constraints = vec![
Constraint::Length(20),
Constraint::Length(20),
Constraint::Length(20),
];
self.value = 20;
}
fn is_running(&self) -> bool {
self.mode == AppMode::Running
}
fn handle_events(&mut self) -> Result<()> {
match event::read()? {
Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
KeyCode::Char('q') | KeyCode::Esc => self.exit(),
KeyCode::Char('1') => self.swap_constraint(ConstraintName::Min),
KeyCode::Char('2') => self.swap_constraint(ConstraintName::Max),
KeyCode::Char('3') => self.swap_constraint(ConstraintName::Length),
KeyCode::Char('4') => self.swap_constraint(ConstraintName::Percentage),
KeyCode::Char('5') => self.swap_constraint(ConstraintName::Ratio),
KeyCode::Char('6') => self.swap_constraint(ConstraintName::Fill),
KeyCode::Char('+') => self.increment_spacing(),
KeyCode::Char('-') => self.decrement_spacing(),
KeyCode::Char('x') => self.delete_block(),
KeyCode::Char('a') => self.insert_block(),
KeyCode::Char('k') | KeyCode::Up => self.increment_value(),
KeyCode::Char('j') | KeyCode::Down => self.decrement_value(),
KeyCode::Char('h') | KeyCode::Left => self.prev_block(),
KeyCode::Char('l') | KeyCode::Right => self.next_block(),
_ => {}
},
_ => {}
}
Ok(())
}
fn increment_value(&mut self) {
let Some(constraint) = self.constraints.get_mut(self.selected_index) else {
return;
};
match constraint {
Constraint::Length(v)
| Constraint::Min(v)
| Constraint::Max(v)
| Constraint::Fill(v)
| Constraint::Percentage(v) => *v = v.saturating_add(1),
Constraint::Ratio(_n, d) => *d = d.saturating_add(1),
};
}
fn decrement_value(&mut self) {
let Some(constraint) = self.constraints.get_mut(self.selected_index) else {
return;
};
match constraint {
Constraint::Length(v)
| Constraint::Min(v)
| Constraint::Max(v)
| Constraint::Fill(v)
| Constraint::Percentage(v) => *v = v.saturating_sub(1),
Constraint::Ratio(_n, d) => *d = d.saturating_sub(1),
};
}
/// select the next block with wrap around
fn next_block(&mut self) {
if self.constraints.is_empty() {
return;
}
let len = self.constraints.len();
self.selected_index = (self.selected_index + 1) % len;
}
/// select the previous block with wrap around
fn prev_block(&mut self) {
if self.constraints.is_empty() {
return;
}
let len = self.constraints.len();
self.selected_index = (self.selected_index + self.constraints.len() - 1) % len;
}
/// delete the selected block
fn delete_block(&mut self) {
if self.constraints.is_empty() {
return;
}
self.constraints.remove(self.selected_index);
self.selected_index = self.selected_index.saturating_sub(1);
}
/// insert a block after the selected block
fn insert_block(&mut self) {
let index = self
.selected_index
.saturating_add(1)
.min(self.constraints.len());
let constraint = Constraint::Length(self.value);
self.constraints.insert(index, constraint);
self.selected_index = index;
}
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 exit(&mut self) {
self.mode = AppMode::Quit;
}
fn swap_constraint(&mut self, name: ConstraintName) {
if self.constraints.is_empty() {
return;
}
let constraint = match name {
ConstraintName::Length => Length(self.value),
ConstraintName::Percentage => Percentage(self.value),
ConstraintName::Min => Min(self.value),
ConstraintName::Max => Max(self.value),
ConstraintName::Fill => Fill(self.value),
ConstraintName::Ratio => Ratio(1, u32::from(self.value) / 4), // for balance
};
self.constraints[self.selected_index] = constraint;
}
}
impl From<Constraint> for ConstraintName {
fn from(constraint: Constraint) -> Self {
match constraint {
Length(_) => Self::Length,
Percentage(_) => Self::Percentage,
Ratio(_, _) => Self::Ratio,
Min(_) => Self::Min,
Max(_) => Self::Max,
Fill(_) => Self::Fill,
}
}
}
impl Widget for &App {
fn render(self, area: Rect, buf: &mut Buffer) {
let [header_area, instructions_area, swap_legend_area, _, blocks_area] =
Layout::vertical([
Length(2), // header
Length(2), // instructions
Length(1), // swap key legend
Length(1), // gap
Fill(1), // blocks
])
.areas(area);
App::header().render(header_area, buf);
App::instructions().render(instructions_area, buf);
App::swap_legend().render(swap_legend_area, buf);
self.render_layout_blocks(blocks_area, buf);
}
}
// App rendering
impl App {
const HEADER_COLOR: Color = SLATE.c200;
const TEXT_COLOR: Color = SLATE.c400;
const AXIS_COLOR: Color = SLATE.c500;
fn header() -> impl Widget {
let text = "Constraint Explorer";
text.bold().fg(Self::HEADER_COLOR).into_centered_line()
}
fn instructions() -> impl Widget {
let text = "◄ ►: select, ▲ ▼: edit, 1-6: swap, a: add, x: delete, q: quit, + -: spacing";
Paragraph::new(text)
.fg(Self::TEXT_COLOR)
.centered()
.wrap(Wrap { trim: false })
}
fn swap_legend() -> impl Widget {
#[allow(unstable_name_collisions)]
Paragraph::new(
Line::from(
[
ConstraintName::Min,
ConstraintName::Max,
ConstraintName::Length,
ConstraintName::Percentage,
ConstraintName::Ratio,
ConstraintName::Fill,
]
.iter()
.enumerate()
.map(|(i, name)| {
format!(" {i}: {name} ", i = i + 1)
.fg(SLATE.c200)
.bg(name.color())
})
.intersperse(Span::from(" "))
.collect_vec(),
)
.centered(),
)
.wrap(Wrap { trim: false })
}
/// A bar like `<----- 80 px (gap: 2 px) ----->`
///
/// Only shows the gap when spacing is not zero
fn axis(&self, width: u16) -> impl Widget {
let label = if self.spacing != 0 {
format!("{} px (gap: {} px)", width, self.spacing)
} else {
format!("{width} px")
};
let bar_width = width.saturating_sub(2) as usize; // we want to `<` and `>` at the ends
let width_bar = format!("<{label:-^bar_width$}>");
Paragraph::new(width_bar).fg(Self::AXIS_COLOR).centered()
}
fn render_layout_blocks(&self, area: Rect, buf: &mut Buffer) {
let [user_constraints, area] = Layout::vertical([Length(3), Fill(1)])
.spacing(1)
.areas(area);
self.render_user_constraints_legend(user_constraints, buf);
let [start, center, end, space_around, space_between] =
Layout::vertical([Length(7); 5]).areas(area);
self.render_layout_block(Flex::Start, start, buf);
self.render_layout_block(Flex::Center, center, buf);
self.render_layout_block(Flex::End, end, buf);
self.render_layout_block(Flex::SpaceAround, space_around, buf);
self.render_layout_block(Flex::SpaceBetween, space_between, buf);
}
fn render_user_constraints_legend(&self, area: Rect, buf: &mut Buffer) {
let constraints = self.constraints.iter().map(|_| Constraint::Fill(1));
let blocks = Layout::horizontal(constraints).split(area);
for (i, (area, constraint)) in blocks.iter().zip(self.constraints.iter()).enumerate() {
let selected = self.selected_index == i;
ConstraintBlock::new(*constraint, selected, true).render(*area, buf);
}
}
fn render_layout_block(&self, flex: Flex, area: Rect, buf: &mut Buffer) {
let [label_area, axis_area, blocks_area] =
Layout::vertical([Length(1), Max(1), Length(4)]).areas(area);
if label_area.height > 0 {
format!("Flex::{flex:?}").bold().render(label_area, buf);
}
self.axis(area.width).render(axis_area, buf);
let (blocks, spacers) = Layout::horizontal(&self.constraints)
.flex(flex)
.spacing(self.spacing)
.split_with_spacers(blocks_area);
for (i, (area, constraint)) in blocks.iter().zip(self.constraints.iter()).enumerate() {
let selected = self.selected_index == i;
ConstraintBlock::new(*constraint, selected, false).render(*area, buf);
}
for area in spacers.iter() {
SpacerBlock.render(*area, buf);
}
}
}
impl Widget for ConstraintBlock {
fn render(self, area: Rect, buf: &mut Buffer) {
match area.height {
1 => self.render_1px(area, buf),
2 => self.render_2px(area, buf),
_ => self.render_4px(area, buf),
}
}
}
impl ConstraintBlock {
const TEXT_COLOR: Color = SLATE.c200;
const fn new(constraint: Constraint, selected: bool, legend: bool) -> Self {
Self {
constraint,
legend,
selected,
}
}
fn label(&self, width: u16) -> String {
let long_width = format!("{width} px");
let short_width = format!("{width}");
// border takes up 2 columns
let available_space = width.saturating_sub(2) as usize;
let width_label = if long_width.len() < available_space {
long_width
} else if short_width.len() < available_space {
short_width
} else {
String::new()
};
format!("{}\n{}", self.constraint, width_label)
}
fn render_1px(&self, area: Rect, buf: &mut Buffer) {
let lighter_color = ConstraintName::from(self.constraint).lighter_color();
let main_color = ConstraintName::from(self.constraint).color();
let selected_color = if self.selected {
lighter_color
} else {
main_color
};
Block::new()
.fg(Self::TEXT_COLOR)
.bg(selected_color)
.render(area, buf);
}
fn render_2px(&self, area: Rect, buf: &mut Buffer) {
let lighter_color = ConstraintName::from(self.constraint).lighter_color();
let main_color = ConstraintName::from(self.constraint).color();
let selected_color = if self.selected {
lighter_color
} else {
main_color
};
Block::bordered()
.border_set(symbols::border::QUADRANT_OUTSIDE)
.border_style(Style::reset().fg(selected_color).reversed())
.render(area, buf);
}
fn render_4px(&self, area: Rect, buf: &mut Buffer) {
let lighter_color = ConstraintName::from(self.constraint).lighter_color();
let main_color = ConstraintName::from(self.constraint).color();
let selected_color = if self.selected {
lighter_color
} else {
main_color
};
let color = if self.legend {
selected_color
} else {
main_color
};
let label = self.label(area.width);
let block = Block::bordered()
.border_set(symbols::border::QUADRANT_OUTSIDE)
.border_style(Style::reset().fg(color).reversed())
.fg(Self::TEXT_COLOR)
.bg(color);
Paragraph::new(label)
.centered()
.fg(Self::TEXT_COLOR)
.bg(color)
.block(block)
.render(area, buf);
if !self.legend {
let border_color = if self.selected {
lighter_color
} else {
main_color
};
if let Some(last_row) = area.rows().last() {
buf.set_style(last_row, border_color);
}
}
}
}
impl Widget for SpacerBlock {
fn render(self, area: Rect, buf: &mut Buffer) {
match area.height {
1 => (),
2 => Self::render_2px(area, buf),
3 => Self::render_3px(area, buf),
_ => Self::render_4px(area, buf),
}
}
}
impl SpacerBlock {
const TEXT_COLOR: Color = SLATE.c500;
const BORDER_COLOR: Color = SLATE.c600;
/// A block with a corner borders
fn block() -> impl Widget {
let corners_only = symbols::border::Set {
top_left: line::NORMAL.top_left,
top_right: line::NORMAL.top_right,
bottom_left: line::NORMAL.bottom_left,
bottom_right: line::NORMAL.bottom_right,
vertical_left: " ",
vertical_right: " ",
horizontal_top: " ",
horizontal_bottom: " ",
};
Block::bordered()
.border_set(corners_only)
.border_style(Self::BORDER_COLOR)
}
/// A vertical line used if there is not enough space to render the block
fn line() -> impl Widget {
Paragraph::new(Text::from(vec![
Line::from(""),
Line::from(""),
Line::from(""),
Line::from(""),
]))
.style(Self::BORDER_COLOR)
}
/// A label that says "Spacer" if there is enough space
fn spacer_label(width: u16) -> impl Widget {
let label = if width >= 6 { "Spacer" } else { "" };
label.fg(Self::TEXT_COLOR).into_centered_line()
}
/// A label that says "8 px" if there is enough space
fn label(width: u16) -> impl Widget {
let long_label = format!("{width} px");
let short_label = format!("{width}");
let label = if long_label.len() < width as usize {
long_label
} else if short_label.len() < width as usize {
short_label
} else {
String::new()
};
Line::styled(label, Self::TEXT_COLOR).centered()
}
fn render_2px(area: Rect, buf: &mut Buffer) {
if area.width > 1 {
Self::block().render(area, buf);
} else {
Self::line().render(area, buf);
}
}
fn render_3px(area: Rect, buf: &mut Buffer) {
if area.width > 1 {
Self::block().render(area, buf);
} else {
Self::line().render(area, buf);
}
let row = area.rows().nth(1).unwrap_or_default();
Self::spacer_label(area.width).render(row, buf);
}
fn render_4px(area: Rect, buf: &mut Buffer) {
if area.width > 1 {
Self::block().render(area, buf);
} else {
Self::line().render(area, buf);
}
let row = area.rows().nth(1).unwrap_or_default();
Self::spacer_label(area.width).render(row, buf);
let row = area.rows().nth(2).unwrap_or_default();
Self::label(area.width).render(row, buf);
}
}
impl ConstraintName {
const fn color(self) -> Color {
match self {
Self::Length => SLATE.c700,
Self::Percentage => SLATE.c800,
Self::Ratio => SLATE.c900,
Self::Fill => SLATE.c950,
Self::Min => BLUE.c800,
Self::Max => BLUE.c900,
}
}
const fn lighter_color(self) -> Color {
match self {
Self::Length => STONE.c500,
Self::Percentage => STONE.c600,
Self::Ratio => STONE.c700,
Self::Fill => STONE.c800,
Self::Min => SKY.c600,
Self::Max => SKY.c700,
}
}
}

View File

@@ -1,15 +0,0 @@
[package]
name = "constraints"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
strum.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Constraints demo
This example shows different types of constraints.
To run this demo:
```shell
cargo run -p constraints
```

View File

@@ -1,14 +0,0 @@
[package]
name = "custom-widget"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Custom widget demo
This example shows how to create a custom widget that can be interacted with the mouse.
To run this demo:
```shell
cargo run -p custom-widget
```

View File

@@ -1,17 +0,0 @@
[package]
name = "demo"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[features]
default = ["crossterm"]
crossterm = ["ratatui/crossterm"]
termion = ["ratatui/termion"]
termwiz = ["ratatui/termwiz"]
[dependencies]
clap = { version = "4.5.27", features = ["derive"] }
rand = "0.9.0"
ratatui.workspace = true

View File

@@ -1,25 +0,0 @@
# Demo example
This is the original demo that was developed for Tui-rs (the library that Ratatui was forked from).
![demo.gif](https://github.com/ratatui/ratatui/blob/images/examples/demo.gif?raw=true)
This example is available for each backend. To run it:
## crossterm
```shell
cargo run -p demo
```
## termion
```shell
cargo run -p demo --no-default-features --features termion
```
## termwiz
```shell
cargo run -p demo --no-default-features --features termwiz
```

View File

@@ -1,56 +0,0 @@
//! # [Ratatui] Original Demo example
//!
//! The latest version of this example is available in the [examples] folder in the repository.
//!
//! Please note that the examples are designed to be run against the `main` branch of the Github
//! repository. This means that you may not be able to compile with the latest release version on
//! crates.io, or the one that you have installed locally.
//!
//! See the [examples readme] for more information on finding examples that match the version of the
//! library you are using.
//!
//! [Ratatui]: https://github.com/ratatui/ratatui
//! [examples]: https://github.com/ratatui/ratatui/blob/main/examples
//! [examples readme]: https://github.com/ratatui/ratatui/blob/main/examples/README.md
use std::{error::Error, time::Duration};
use clap::Parser;
mod app;
#[cfg(feature = "crossterm")]
mod crossterm;
#[cfg(all(not(windows), feature = "termion"))]
mod termion;
#[cfg(feature = "termwiz")]
mod termwiz;
mod ui;
/// Demo
#[derive(Debug, Parser)]
struct Cli {
/// time in ms between two ticks.
#[arg(short, long, default_value_t = 250)]
tick_rate: u64,
/// whether unicode symbols are used to improve the overall look of the app
#[arg(short, long, default_value_t = true)]
unicode: bool,
}
fn main() -> Result<(), Box<dyn Error>> {
let cli = Cli::parse();
let tick_rate = Duration::from_millis(cli.tick_rate);
#[cfg(feature = "crossterm")]
crate::crossterm::run(tick_rate, cli.unicode)?;
#[cfg(all(not(windows), feature = "termion", not(feature = "crossterm")))]
crate::termion::run(tick_rate, cli.unicode)?;
#[cfg(all(
feature = "termwiz",
not(feature = "crossterm"),
not(feature = "termion")
))]
crate::termwiz::run(tick_rate, cli.unicode)?;
Ok(())
}

View File

@@ -1,19 +0,0 @@
[package]
name = "demo2"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre = "0.6.3"
crossterm.workspace = true
indoc.workspace = true
itertools.workspace = true
palette = "0.7.6"
rand = "0.9.0"
rand_chacha = "0.9.0"
ratatui = { workspace = true, features = ["all-widgets"] }
strum.workspace = true
time = "0.3.37"
unicode-width = "0.2.0"

View File

@@ -1,9 +0,0 @@
## Demo2
This is the demo example from the main README and crate page. Source: [demo2](./demo2/).
```shell
cargo run -p demo2
```
![Demo2](https://github.com/ratatui/ratatui/blob/images/examples/demo2.gif?raw=true)

View File

@@ -1,225 +0,0 @@
use std::time::Duration;
use color_eyre::{eyre::Context, Result};
use crossterm::event;
use itertools::Itertools;
use ratatui::{
buffer::Buffer,
crossterm::event::{Event, KeyCode, KeyEvent, KeyEventKind},
layout::{Constraint, Layout, Rect},
style::Color,
text::{Line, Span},
widgets::{Block, Tabs, Widget},
DefaultTerminal, Frame,
};
use strum::{Display, EnumIter, FromRepr, IntoEnumIterator};
use crate::{
destroy,
tabs::{AboutTab, EmailTab, RecipeTab, TracerouteTab, WeatherTab},
THEME,
};
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
pub struct App {
mode: Mode,
tab: Tab,
about_tab: AboutTab,
recipe_tab: RecipeTab,
email_tab: EmailTab,
traceroute_tab: TracerouteTab,
weather_tab: WeatherTab,
}
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
enum Mode {
#[default]
Running,
Destroy,
Quit,
}
#[derive(Debug, Clone, Copy, Default, Display, EnumIter, FromRepr, PartialEq, Eq)]
enum Tab {
#[default]
About,
Recipe,
Email,
Traceroute,
Weather,
}
impl App {
/// Run the app until the user quits.
pub fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
while self.is_running() {
terminal
.draw(|frame| self.draw(frame))
.wrap_err("terminal.draw")?;
self.handle_events()?;
}
Ok(())
}
fn is_running(&self) -> bool {
self.mode != Mode::Quit
}
/// Draw a single frame of the app.
fn draw(&self, frame: &mut Frame) {
frame.render_widget(self, frame.area());
if self.mode == Mode::Destroy {
destroy::destroy(frame);
}
}
/// Handle events from the terminal.
///
/// This function is called once per frame, The events are polled from the stdin with timeout of
/// 1/50th of a second. This was chosen to try to match the default frame rate of a GIF in VHS.
fn handle_events(&mut self) -> Result<()> {
let timeout = Duration::from_secs_f64(1.0 / 50.0);
if !event::poll(timeout)? {
return Ok(());
}
match event::read()? {
Event::Key(key) if key.kind == KeyEventKind::Press => self.handle_key_press(key),
_ => {}
}
Ok(())
}
fn handle_key_press(&mut self, key: KeyEvent) {
match key.code {
KeyCode::Char('q') | KeyCode::Esc => self.mode = Mode::Quit,
KeyCode::Char('h') | KeyCode::Left => self.prev_tab(),
KeyCode::Char('l') | KeyCode::Right => self.next_tab(),
KeyCode::Char('k') | KeyCode::Up => self.prev(),
KeyCode::Char('j') | KeyCode::Down => self.next(),
KeyCode::Char('d') | KeyCode::Delete => self.destroy(),
_ => {}
};
}
fn prev(&mut self) {
match self.tab {
Tab::About => self.about_tab.prev_row(),
Tab::Recipe => self.recipe_tab.prev(),
Tab::Email => self.email_tab.prev(),
Tab::Traceroute => self.traceroute_tab.prev_row(),
Tab::Weather => self.weather_tab.prev(),
}
}
fn next(&mut self) {
match self.tab {
Tab::About => self.about_tab.next_row(),
Tab::Recipe => self.recipe_tab.next(),
Tab::Email => self.email_tab.next(),
Tab::Traceroute => self.traceroute_tab.next_row(),
Tab::Weather => self.weather_tab.next(),
}
}
fn prev_tab(&mut self) {
self.tab = self.tab.prev();
}
fn next_tab(&mut self) {
self.tab = self.tab.next();
}
fn destroy(&mut self) {
self.mode = Mode::Destroy;
}
}
/// Implement Widget for &App rather than for App as we would otherwise have to clone or copy the
/// entire app state on every frame. For this example, the app state is small enough that it doesn't
/// matter, but for larger apps this can be a significant performance improvement.
impl Widget for &App {
fn render(self, area: Rect, buf: &mut Buffer) {
let vertical = Layout::vertical([
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
]);
let [title_bar, tab, bottom_bar] = vertical.areas(area);
Block::new().style(THEME.root).render(area, buf);
self.render_title_bar(title_bar, buf);
self.render_selected_tab(tab, buf);
App::render_bottom_bar(bottom_bar, buf);
}
}
impl App {
fn render_title_bar(&self, area: Rect, buf: &mut Buffer) {
let layout = Layout::horizontal([Constraint::Min(0), Constraint::Length(43)]);
let [title, tabs] = layout.areas(area);
Span::styled("Ratatui", THEME.app_title).render(title, buf);
let titles = Tab::iter().map(Tab::title);
Tabs::new(titles)
.style(THEME.tabs)
.highlight_style(THEME.tabs_selected)
.select(self.tab as usize)
.divider("")
.padding("", "")
.render(tabs, buf);
}
fn render_selected_tab(&self, area: Rect, buf: &mut Buffer) {
match self.tab {
Tab::About => self.about_tab.render(area, buf),
Tab::Recipe => self.recipe_tab.render(area, buf),
Tab::Email => self.email_tab.render(area, buf),
Tab::Traceroute => self.traceroute_tab.render(area, buf),
Tab::Weather => self.weather_tab.render(area, buf),
};
}
fn render_bottom_bar(area: Rect, buf: &mut Buffer) {
let keys = [
("H/←", "Left"),
("L/→", "Right"),
("K/↑", "Up"),
("J/↓", "Down"),
("D/Del", "Destroy"),
("Q/Esc", "Quit"),
];
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();
Line::from(spans)
.centered()
.style((Color::Indexed(236), Color::Indexed(232)))
.render(area, buf);
}
}
impl 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 prev(self) -> Self {
let current_index = self as usize;
let prev_index = current_index.saturating_sub(1);
Self::from_repr(prev_index).unwrap_or(self)
}
fn title(self) -> String {
match self {
Self::About => String::new(),
tab => format!(" {tab} "),
}
}
}

View File

@@ -1,142 +0,0 @@
use rand::Rng;
use rand_chacha::rand_core::SeedableRng;
use ratatui::{
buffer::Buffer,
layout::{Flex, Layout, Rect},
style::{Color, Style},
text::Text,
widgets::Widget,
Frame,
};
/// delay the start of the animation so it doesn't start immediately
const DELAY: usize = 120;
/// higher means more pixels per frame are modified in the animation
const DRIP_SPEED: usize = 500;
/// delay the start of the text animation so it doesn't start immediately after the initial delay
const TEXT_DELAY: usize = 180;
/// Destroy mode activated by pressing `d`
pub fn destroy(frame: &mut Frame<'_>) {
let frame_count = frame.count().saturating_sub(DELAY);
if frame_count == 0 {
return;
}
let area = frame.area();
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.
#[allow(
clippy::cast_possible_truncation,
clippy::cast_precision_loss,
clippy::cast_sign_loss
)]
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 / f64::from(ramp_frames);
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.random_range(0..area.width);
let src_y = rng.random_range(1..area.height - 2);
let src = buf[(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.random_ratio(1, 100) {
let dest_x = rng
.random_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 = &mut buf[(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.random_ratio(1, 10) {
*dest = src;
} else {
dest.reset();
}
} 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
buf[(dest_x, dest_y)] = src;
}
}
}
/// draw some text fading in and out from black to red and back
#[allow(clippy::cast_possible_truncation, clippy::cast_precision_loss)]
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 logo = indoc::indoc! {"
██████ ████ ██████ ████ ██████ ██ ██ ██
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██████ ████████ ██ ████████ ██ ██ ██ ██
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ██ ██ ██ ██ ██ ██ ██ ████ ██
"};
let logo_text = Text::styled(logo, Color::Rgb(255, 255, 255));
let area = centered_rect(area, logo_text.width() as u16, logo_text.height() as u16);
let mask_buf = &mut Buffer::empty(area);
logo_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 = &mut buf[(col.x, col.y)];
let mask_cell = &mut mask_buf[(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 remain = 1.0 - percentage;
let red = f64::from(mask_red).mul_add(percentage, f64::from(cell_red) * remain);
let green = f64::from(mask_green).mul_add(percentage, f64::from(cell_green) * remain);
let blue = f64::from(mask_blue).mul_add(percentage, f64::from(cell_blue) * remain);
#[allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
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] = vertical.areas(area);
let [area] = horizontal.areas(area);
area
}

View File

@@ -1,54 +0,0 @@
//! # [Ratatui] Demo2 example
//!
//! The latest version of this example is available in the [examples] folder in the repository.
//!
//! Please note that the examples are designed to be run against the `main` branch of the Github
//! repository. This means that you may not be able to compile with the latest release version on
//! crates.io, or the one that you have installed locally.
//!
//! See the [examples readme] for more information on finding examples that match the version of the
//! library you are using.
//!
//! [Ratatui]: https://github.com/ratatui/ratatui
//! [examples]: https://github.com/ratatui/ratatui/blob/main/examples
//! [examples readme]: https://github.com/ratatui/ratatui/blob/main/examples/README.md
#![allow(
clippy::missing_errors_doc,
clippy::module_name_repetitions,
clippy::must_use_candidate
)]
mod app;
mod colors;
mod destroy;
mod tabs;
mod theme;
use std::io::stdout;
use app::App;
use color_eyre::Result;
use crossterm::{
execute,
terminal::{EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{layout::Rect, TerminalOptions, Viewport};
pub use self::{
colors::{color_from_oklab, RgbSwatch},
theme::THEME,
};
fn main() -> Result<()> {
color_eyre::install()?;
// 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 viewport = Viewport::Fixed(Rect::new(0, 0, 81, 18));
let terminal = ratatui::init_with_options(TerminalOptions { viewport });
execute!(stdout(), EnterAlternateScreen).expect("failed to enter alternate screen");
let app_result = App::default().run(terminal);
execute!(stdout(), LeaveAlternateScreen).expect("failed to leave alternate screen");
ratatui::restore();
app_result
}

View File

@@ -1,75 +0,0 @@
use ratatui::{
buffer::Buffer,
layout::{Alignment, Constraint, Layout, Margin, Rect},
widgets::{
Block, Borders, Clear, MascotEyeColor, Padding, Paragraph, RatatuiMascot, Widget, Wrap,
},
};
use crate::{RgbSwatch, THEME};
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
pub struct AboutTab {
row_index: usize,
}
impl AboutTab {
pub fn prev_row(&mut self) {
self.row_index = self.row_index.saturating_sub(1);
}
pub fn next_row(&mut self) {
self.row_index = self.row_index.saturating_add(1);
}
}
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 [logo_area, description] = horizontal.areas(area);
render_crate_description(description, buf);
let eye_state = if self.row_index % 2 == 0 {
MascotEyeColor::Default
} else {
MascotEyeColor::Red
};
RatatuiMascot::default().set_eye(eye_state).render(
logo_area.inner(Margin {
vertical: 0,
horizontal: 2,
}),
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);
}

View File

@@ -1,15 +0,0 @@
[package]
name = "flex"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
strum.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Flex demo
This interactive example shows how to use the flex layouts.
To run this demo:
```shell
cargo run -p flex
```

View File

@@ -1,525 +0,0 @@
/// A Ratatui example that demonstrates different types of flex layouts.
///
/// You can also change the spacing between the constraints, and toggle between different types
/// of flex layouts.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::num::NonZeroUsize;
use color_eyre::Result;
use ratatui::{
buffer::Buffer,
crossterm::event::{self, Event, KeyCode, KeyEventKind},
layout::{
Alignment,
Constraint::{self, Fill, Length, Max, Min, Percentage, Ratio},
Flex, Layout, Rect,
},
style::{palette::tailwind, Color, Modifier, Style, Stylize},
symbols::{self, line},
text::{Line, Text},
widgets::{
Block, Paragraph, Scrollbar, ScrollbarOrientation, ScrollbarState, StatefulWidget, Tabs,
Widget,
},
DefaultTerminal,
};
use strum::{Display, EnumIter, FromRepr, IntoEnumIterator};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::default().run(terminal);
ratatui::restore();
app_result
}
const EXAMPLE_DATA: &[(&str, &[Constraint])] = &[
(
"Min(u16) takes any excess space always",
&[Length(10), Min(10), Max(10), Percentage(10), Ratio(1,10)],
),
(
"Fill(u16) takes any excess space always",
&[Length(20), Percentage(20), Ratio(1, 5), Fill(1)],
),
(
"Here's all constraints in one line",
&[Length(10), Min(10), Max(10), Percentage(10), Ratio(1,10), Fill(1)],
),
(
"",
&[Max(50), Min(50)],
),
(
"",
&[Max(20), Length(10)],
),
(
"",
&[Max(20), Length(10)],
),
(
"Min grows always but also allows Fill to grow",
&[Percentage(50), Fill(1), Fill(2), Min(50)],
),
(
"In `Legacy`, the last constraint of lowest priority takes excess space",
&[Length(20), Length(20), Percentage(20)],
),
("", &[Length(20), Percentage(20), Length(20)]),
("A lowest priority constraint will be broken before a high priority constraint", &[Ratio(1,4), Percentage(20)]),
("`Length` is higher priority than `Percentage`", &[Percentage(20), Length(10)]),
("`Min/Max` is higher priority than `Length`", &[Length(10), Max(20)]),
("", &[Length(100), Min(20)]),
("`Length` is higher priority than `Min/Max`", &[Max(20), Length(10)]),
("", &[Min(20), Length(90)]),
("Fill is the lowest priority and will fill any excess space", &[Fill(1), Ratio(1, 4)]),
("Fill can be used to scale proportionally with other Fill blocks", &[Fill(1), Percentage(20), Fill(2)]),
("", &[Ratio(1, 3), Percentage(20), Ratio(2, 3)]),
("Legacy will stretch the last lowest priority constraint\nStretch will only stretch equal weighted constraints", &[Length(20), Length(15)]),
("", &[Percentage(20), Length(15)]),
("`Fill(u16)` fills up excess space, but is lower priority to spacers.\ni.e. Fill will only have widths in Flex::Stretch and Flex::Legacy", &[Fill(1), Fill(1)]),
("", &[Length(20), Length(20)]),
(
"When not using `Flex::Stretch` or `Flex::Legacy`,\n`Min(u16)` and `Max(u16)` collapse to their lowest values",
&[Min(20), Max(20)],
),
(
"",
&[Max(20)],
),
("", &[Min(20), Max(20), Length(20), Length(20)]),
("", &[Fill(0), Fill(0)]),
(
"`Fill(1)` can be to scale with respect to other `Fill(2)`",
&[Fill(1), Fill(2)],
),
(
"",
&[Fill(1), Min(10), Max(10), Fill(2)],
),
(
"`Fill(0)` collapses if there are other non-zero `Fill(_)`\nconstraints. e.g. `[Fill(0), Fill(0), Fill(1)]`:",
&[
Fill(0),
Fill(0),
Fill(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]
Legacy,
Start,
Center,
End,
SpaceAround,
SpaceBetween,
}
impl App {
fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
// increase the layout cache to account for the number of layout events. This ensures that
// layout is not generally reprocessed on every frame (which would lead to possible janky
// results when there are more than one possible solution to the requested layout). This
// assumes the user changes spacing about a 100 times or so.
let cache_size = EXAMPLE_DATA.len() * SelectedTab::iter().len() * 100;
Layout::init_cache(NonZeroUsize::new(cache_size).unwrap());
while self.is_running() {
terminal.draw(|frame| frame.render_widget(self, frame.area()))?;
self.handle_events()?;
}
Ok(())
}
fn is_running(self) -> bool {
self.state == AppState::Running
}
fn handle_events(&mut self) -> Result<()> {
match event::read()? {
Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
KeyCode::Char('q') | KeyCode::Esc => self.quit(),
KeyCode::Char('l') | KeyCode::Right => self.next(),
KeyCode::Char('h') | KeyCode::Left => self.previous(),
KeyCode::Char('j') | KeyCode::Down => self.down(),
KeyCode::Char('k') | KeyCode::Up => self.up(),
KeyCode::Char('g') | KeyCode::Home => self.top(),
KeyCode::Char('G') | KeyCode::End => self.bottom(),
KeyCode::Char('+') => self.increment_spacing(),
KeyCode::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_or(0, |(desc, _)| get_description_height(desc) + 4)
}
/// 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([Length(3), Length(1), Fill(0)]);
let [tabs, axis, demo] = layout.areas(area);
self.tabs().render(tabs, buf);
let scroll_needed = self.render_demo(demo, buf);
let axis_width = if scroll_needed {
axis.width.saturating_sub(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("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(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!("{width} px (gap: {spacing} px)")
} else {
format!("{width} px")
};
let bar_width = width.saturating_sub(2); // we want to `<` and `>` at the ends
let width_bar = format!("<{label:-^bar_width$}>");
Paragraph::new(width_bar.dark_gray()).centered()
}
/// 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
#[allow(clippy::cast_possible_truncation)]
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[(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: Self) -> Line<'static> {
use tailwind::{INDIGO, ORANGE, SKY};
let text = value.to_string();
let color = match value {
Self::Legacy => ORANGE.c400,
Self::Start => SKY.c400,
Self::Center => SKY.c300,
Self::End => SKY.c200,
Self::SpaceAround => INDIGO.c400,
Self::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 {
Self::Legacy => Self::render_examples(area, buf, Flex::Legacy, spacing),
Self::Start => Self::render_examples(area, buf, Flex::Start, spacing),
Self::Center => Self::render_examples(area, buf, Flex::Center, spacing),
Self::End => Self::render_examples(area, buf, Flex::End, spacing),
Self::SpaceAround => Self::render_examples(area, buf, Flex::SpaceAround, spacing),
Self::SpaceBetween => Self::render_examples(area, buf, Flex::SpaceBetween, spacing),
}
}
}
impl SelectedTab {
fn render_examples(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([Length(title_height), Fill(0)]);
let [title, illustrations] = layout.areas(area);
let (blocks, spacers) = Layout::horizontal(&self.constraints)
.flex(self.flex)
.spacing(self.spacing)
.split_with_spacers(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);
}
for spacer in spacers.iter() {
Self::render_spacer(*spacer, buf);
}
}
}
impl Example {
fn render_spacer(spacer: Rect, buf: &mut Buffer) {
if spacer.width > 1 {
let corners_only = symbols::border::Set {
top_left: line::NORMAL.top_left,
top_right: line::NORMAL.top_right,
bottom_left: line::NORMAL.bottom_left,
bottom_right: line::NORMAL.bottom_right,
vertical_left: " ",
vertical_right: " ",
horizontal_top: " ",
horizontal_bottom: " ",
};
Block::bordered()
.border_set(corners_only)
.border_style(Style::reset().dark_gray())
.render(spacer, buf);
} else {
Paragraph::new(Text::from(vec![
Line::from(""),
Line::from(""),
Line::from(""),
Line::from(""),
]))
.style(Style::reset().dark_gray())
.render(spacer, buf);
}
let width = spacer.width;
let label = if width > 4 {
format!("{width} px")
} else if width > 2 {
format!("{width}")
} else {
String::new()
};
let text = Text::from(vec![
Line::raw(""),
Line::raw(""),
Line::styled(label, Style::reset().dark_gray()),
]);
Paragraph::new(text)
.style(Style::reset().dark_gray())
.alignment(Alignment::Center)
.render(spacer, buf);
}
fn illustration(constraint: Constraint, width: u16) -> impl Widget {
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).centered().block(block)
}
}
const fn color_for_constraint(constraint: Constraint) -> Color {
use tailwind::{BLUE, SLATE};
match constraint {
Constraint::Min(_) => BLUE.c900,
Constraint::Max(_) => BLUE.c800,
Constraint::Length(_) => SLATE.c700,
Constraint::Percentage(_) => SLATE.c800,
Constraint::Ratio(_, _) => SLATE.c900,
Constraint::Fill(_) => SLATE.c950,
}
}
#[allow(clippy::cast_possible_truncation)]
fn get_description_height(s: &str) -> u16 {
if s.is_empty() {
0
} else {
s.split('\n').count() as u16
}
}

View File

@@ -1,14 +0,0 @@
[package]
name = "gauge"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Gauge demo
This example shows different types of gauges.
To run this demo:
```shell
cargo run -p gauge
```

View File

@@ -1,197 +0,0 @@
/// A Ratatui example that demonstrates different types of gauges.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::time::Duration;
use color_eyre::Result;
use ratatui::{
buffer::Buffer,
crossterm::event::{self, Event, KeyCode, KeyEventKind},
layout::{Alignment, Constraint, Layout, Rect},
style::{palette::tailwind, Color, Style, Stylize},
text::{Line, Span},
widgets::{Block, Borders, Gauge, Padding, Paragraph, Widget},
DefaultTerminal,
};
const GAUGE1_COLOR: Color = tailwind::RED.c800;
const GAUGE2_COLOR: Color = tailwind::GREEN.c800;
const GAUGE3_COLOR: Color = tailwind::BLUE.c800;
const GAUGE4_COLOR: Color = tailwind::ORANGE.c800;
const CUSTOM_LABEL_COLOR: Color = tailwind::SLATE.c200;
#[derive(Debug, Default, Clone, Copy)]
struct App {
state: AppState,
progress_columns: u16,
progress1: u16,
progress2: f64,
progress3: f64,
progress4: f64,
}
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
enum AppState {
#[default]
Running,
Started,
Quitting,
}
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::default().run(terminal);
ratatui::restore();
app_result
}
impl App {
fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
while self.state != AppState::Quitting {
terminal.draw(|frame| frame.render_widget(&self, frame.area()))?;
self.handle_events()?;
self.update(terminal.size()?.width);
}
Ok(())
}
fn update(&mut self, terminal_width: u16) {
if self.state != AppState::Started {
return;
}
// progress1 and progress2 help show the difference between ratio and percentage measuring
// the same thing, but converting to either a u16 or f64. Effectively, we're showing the
// difference between how a continuous gauge acts for floor and rounded values.
self.progress_columns = (self.progress_columns + 1).clamp(0, terminal_width);
self.progress1 = self.progress_columns * 100 / terminal_width;
self.progress2 = f64::from(self.progress_columns) * 100.0 / f64::from(terminal_width);
// progress3 and progress4 similarly show the difference between unicode and non-unicode
// gauges measuring the same thing.
self.progress3 = (self.progress3 + 0.1).clamp(40.0, 100.0);
self.progress4 = (self.progress4 + 0.1).clamp(40.0, 100.0);
}
fn handle_events(&mut self) -> Result<()> {
let timeout = Duration::from_secs_f32(1.0 / 20.0);
if event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
match key.code {
KeyCode::Char(' ') | KeyCode::Enter => self.start(),
KeyCode::Char('q') | KeyCode::Esc => self.quit(),
_ => {}
}
}
}
}
Ok(())
}
fn start(&mut self) {
self.state = AppState::Started;
}
fn quit(&mut self) {
self.state = AppState::Quitting;
}
}
impl Widget for &App {
#[allow(clippy::similar_names)]
fn render(self, area: Rect, buf: &mut Buffer) {
use Constraint::{Length, Min, Ratio};
let layout = Layout::vertical([Length(2), Min(0), Length(1)]);
let [header_area, gauge_area, footer_area] = layout.areas(area);
let layout = Layout::vertical([Ratio(1, 4); 4]);
let [gauge1_area, gauge2_area, gauge3_area, gauge4_area] = layout.areas(gauge_area);
render_header(header_area, buf);
render_footer(footer_area, buf);
self.render_gauge1(gauge1_area, buf);
self.render_gauge2(gauge2_area, buf);
self.render_gauge3(gauge3_area, buf);
self.render_gauge4(gauge4_area, buf);
}
}
fn render_header(area: Rect, buf: &mut Buffer) {
Paragraph::new("Ratatui Gauge Example")
.bold()
.alignment(Alignment::Center)
.fg(CUSTOM_LABEL_COLOR)
.render(area, buf);
}
fn render_footer(area: Rect, buf: &mut Buffer) {
Paragraph::new("Press ENTER to start")
.alignment(Alignment::Center)
.fg(CUSTOM_LABEL_COLOR)
.bold()
.render(area, buf);
}
impl App {
fn render_gauge1(&self, area: Rect, buf: &mut Buffer) {
let title = title_block("Gauge with percentage");
Gauge::default()
.block(title)
.gauge_style(GAUGE1_COLOR)
.percent(self.progress1)
.render(area, buf);
}
fn render_gauge2(&self, area: Rect, buf: &mut Buffer) {
let title = title_block("Gauge with ratio and custom label");
let label = Span::styled(
format!("{:.1}/100", self.progress2),
Style::new().italic().bold().fg(CUSTOM_LABEL_COLOR),
);
Gauge::default()
.block(title)
.gauge_style(GAUGE2_COLOR)
.ratio(self.progress2 / 100.0)
.label(label)
.render(area, buf);
}
fn render_gauge3(&self, area: Rect, buf: &mut Buffer) {
let title = title_block("Gauge with ratio (no unicode)");
let label = format!("{:.1}%", self.progress3);
Gauge::default()
.block(title)
.gauge_style(GAUGE3_COLOR)
.ratio(self.progress3 / 100.0)
.label(label)
.render(area, buf);
}
fn render_gauge4(&self, area: Rect, buf: &mut Buffer) {
let title = title_block("Gauge with ratio (unicode)");
let label = format!("{:.1}%", self.progress3);
Gauge::default()
.block(title)
.gauge_style(GAUGE4_COLOR)
.ratio(self.progress4 / 100.0)
.label(label)
.use_unicode(true)
.render(area, buf);
}
}
fn title_block(title: &str) -> Block {
let title = Line::from(title).centered();
Block::new()
.borders(Borders::NONE)
.padding(Padding::vertical(1))
.title(title)
.fg(CUSTOM_LABEL_COLOR)
}

View File

@@ -1,14 +0,0 @@
[package]
name = "hello-world"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Hello World demo
This example shows how to create a simple TUI with a text.
To run this demo:
```shell
cargo run -p hello-world
```

View File

@@ -1,64 +0,0 @@
/// A Ratatui example that demonstrates a basic hello world application.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
use std::time::Duration;
use color_eyre::{eyre::Context, Result};
use ratatui::{
crossterm::event::{self, Event, KeyCode},
widgets::Paragraph,
DefaultTerminal, Frame,
};
/// 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.
///
/// This example does not handle events or update the application state. It just draws a greeting
/// and exits when the user presses 'q'.
fn main() -> Result<()> {
color_eyre::install()?; // augment errors / panics with easy to read messages
let terminal = ratatui::init();
let app_result = run(terminal).context("app loop failed");
ratatui::restore();
app_result
}
/// 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(mut terminal: DefaultTerminal) -> Result<()> {
loop {
terminal.draw(draw)?;
if should_quit()? {
break;
}
}
Ok(())
}
/// Render the application. This is where you would draw the application UI. This example draws a
/// greeting.
fn draw(frame: &mut Frame) {
let greeting = Paragraph::new("Hello World! (press 'q' to quit)");
frame.render_widget(greeting, frame.area());
}
/// 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 to ensure that the terminal is rendered at
/// least once every 250ms. This allows you to do other work in the application loop, such as
/// updating the application state, without blocking the event loop for too long.
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)
}

View File

@@ -1,15 +0,0 @@
[package]
name = "hyperlink"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
itertools.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Hyperlink demo
This example shows how to render hyperlinks in a terminal using [OSC 8](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda).
To run this demo:
```shell
cargo run -p hyperlink
```

View File

@@ -1,91 +0,0 @@
/// A Ratatui example that how to create hyperlinks in the terminal using [OSC 8].
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
/// [OSC 8]: https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
use color_eyre::Result;
use itertools::Itertools;
use ratatui::{
buffer::Buffer,
crossterm::event::{self, Event, KeyCode},
layout::Rect,
style::Stylize,
text::{Line, Text},
widgets::Widget,
DefaultTerminal,
};
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let app_result = App::new().run(terminal);
ratatui::restore();
app_result
}
struct App {
hyperlink: Hyperlink<'static>,
}
impl App {
fn new() -> Self {
let text = Line::from(vec!["Example ".into(), "hyperlink".blue()]);
let hyperlink = Hyperlink::new(text, "https://example.com");
Self { hyperlink }
}
fn run(self, mut terminal: DefaultTerminal) -> Result<()> {
loop {
terminal.draw(|frame| frame.render_widget(&self.hyperlink, frame.area()))?;
if let Event::Key(key) = event::read()? {
if matches!(key.code, KeyCode::Char('q') | KeyCode::Esc) {
break;
}
}
}
Ok(())
}
}
/// A hyperlink widget that renders a hyperlink in the terminal using [OSC 8].
///
/// [OSC 8]: https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
struct Hyperlink<'content> {
text: Text<'content>,
url: String,
}
impl<'content> Hyperlink<'content> {
fn new(text: impl Into<Text<'content>>, url: impl Into<String>) -> Self {
Self {
text: text.into(),
url: url.into(),
}
}
}
impl Widget for &Hyperlink<'_> {
fn render(self, area: Rect, buffer: &mut Buffer) {
(&self.text).render(area, buffer);
// this is a hacky workaround for https://github.com/ratatui/ratatui/issues/902, a bug
// in the terminal code that incorrectly calculates the width of ANSI escape sequences. It
// works by rendering the hyperlink as a series of 2-character chunks, which is the
// calculated width of the hyperlink text.
for (i, two_chars) in self
.text
.to_string()
.chars()
.chunks(2)
.into_iter()
.enumerate()
{
let text = two_chars.collect::<String>();
let hyperlink = format!("\x1B]8;;{}\x07{}\x1B]8;;\x07", self.url, text);
buffer[(area.x + i as u16 * 2, area.y)].set_symbol(hyperlink.as_str());
}
}
}

View File

@@ -1,15 +0,0 @@
[package]
name = "inline"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
rand = "0.9.0"
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Inline demo
This example shows how to use the inlined viewport to render in a specific area of the screen.
To run this demo:
```shell
cargo run -p inline
```

View File

@@ -1,16 +0,0 @@
[package]
name = "input-form"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
ratatui.workspace = true
serde.workspace = true
serde_json.workspace = true
[lints]
workspace = true

View File

@@ -1,27 +0,0 @@
# Input Form example
This example demonstrates how to handle input across several form fields (2 strings and an number).
It uses an enum to track the focused field, and sends keyboard events to one which is current.
Run this example with:
```shell
cargo run -p input-form
```
This example does not handle things like cursor movement within the line (just keys and backspace).
Most apps would benefit from using the following crates for text input rather than directly using
strings:
- [`tui-input`](https://crates.io/crates/tui-input)
- [`tui-prompts`](https://crates.io/crates/tui-prompts)
- [`tui-textarea`](https://crates.io/crates/tui-textarea)
- [`rat-salsa`](https://crates.io/crates/rat-salsa)
Some more ideas for handling focus can be found in:
- [`focusable`](https://crates.io/crates/focusable) (see also [Ratatui forum
post](https://forum.ratatui.rs/t/focusable-crate-manage-focus-state-for-your-widgets/73))
- [`rat-focus`](https://crates.io/crates/rat-focus)
- A useful [`Bevy` discssion](https://github.com/bevyengine/bevy/discussions/15374) about focus
more generally.

View File

@@ -1,270 +0,0 @@
//! A Ratatui example that demonstrates how to handle input form focus
//!
//! This example demonstrates how to handle cursor and input focus between multiple fields in a
//! form. You can navigate between fields using the Tab key.
//!
//! This does not handle cursor movement etc. This is just a simple example. In a real application,
//! consider using [`tui-input`], or [`tui-prompts`], or [`tui-textarea`].
//!
//! This example runs with the Ratatui library code in the branch that you are currently reading.
//! See the [`latest`] branch for the code which works with the most recent Ratatui release.
//!
//! [`latest`]: https://github.com/ratatui/ratatui/tree/latest
//! [`tui-input`]: https://crates.io/crates/tui-input
//! [`tui-prompts`]: https://crates.io/crates/tui-prompts
//! [`tui-textarea`]: https://crates.io/crates/tui-textarea
use color_eyre::Result;
use crossterm::event::{self, Event, KeyCode, KeyEvent, KeyEventKind};
use ratatui::{
buffer::Buffer,
layout::{Constraint, Layout, Offset, Rect},
style::Stylize,
text::Line,
widgets::Widget,
DefaultTerminal, Frame,
};
use serde::Serialize;
fn main() -> Result<()> {
color_eyre::install()?;
let terminal = ratatui::init();
let result = App::default().run(terminal);
ratatui::restore();
// serialize the form to JSON if the user submitted it, otherwise print "Canceled"
match result {
Ok(Some(form)) => println!("{}", serde_json::to_string_pretty(&form)?),
Ok(None) => println!("Canceled"),
Err(err) => eprintln!("{err}"),
}
Ok(())
}
#[derive(Default)]
struct App {
state: AppState,
form: InputForm,
}
#[derive(Default, PartialEq, Eq)]
enum AppState {
#[default]
Running,
Cancelled,
Submitted,
}
impl App {
fn run(mut self, mut terminal: DefaultTerminal) -> Result<Option<InputForm>> {
while self.state == AppState::Running {
terminal.draw(|frame| self.render(frame))?;
self.handle_events()?;
}
match self.state {
AppState::Cancelled => Ok(None),
AppState::Submitted => Ok(Some(self.form)),
AppState::Running => unreachable!(),
}
}
fn render(&self, frame: &mut Frame) {
self.form.render(frame);
}
fn handle_events(&mut self) -> Result<()> {
match event::read()? {
Event::Key(event) if event.kind == KeyEventKind::Press => match event.code {
KeyCode::Esc => self.state = AppState::Cancelled,
KeyCode::Enter => self.state = AppState::Submitted,
_ => self.form.on_key_press(event),
},
_ => {}
}
Ok(())
}
}
#[derive(Serialize)]
struct InputForm {
#[serde(skip)]
focus: Focus,
first_name: StringField,
last_name: StringField,
age: AgeField,
}
impl Default for InputForm {
fn default() -> Self {
Self {
focus: Focus::FirstName,
first_name: StringField::new("First Name"),
last_name: StringField::new("Last Name"),
age: AgeField::new("Age"),
}
}
}
impl InputForm {
// Handle focus navigation or pass the event to the focused field.
fn on_key_press(&mut self, event: KeyEvent) {
match event.code {
KeyCode::Tab => self.focus = self.focus.next(),
_ => match self.focus {
Focus::FirstName => self.first_name.on_key_press(event),
Focus::LastName => self.last_name.on_key_press(event),
Focus::Age => self.age.on_key_press(event),
},
}
}
/// Render the form with the current focus.
///
/// The cursor is placed at the end of the focused field.
fn render(&self, frame: &mut Frame) {
let [first_name_area, last_name_area, age_area] =
Layout::vertical(Constraint::from_lengths([1, 1, 1])).areas(frame.area());
frame.render_widget(&self.first_name, first_name_area);
frame.render_widget(&self.last_name, last_name_area);
frame.render_widget(&self.age, age_area);
let cursor_position = match self.focus {
Focus::FirstName => first_name_area.offset(self.first_name.cursor_offset()),
Focus::LastName => last_name_area.offset(self.last_name.cursor_offset()),
Focus::Age => age_area.offset(self.age.cursor_offset()),
};
frame.set_cursor_position(cursor_position);
}
}
#[derive(Default, PartialEq, Eq)]
enum Focus {
#[default]
FirstName,
LastName,
Age,
}
impl Focus {
// Round-robin focus order.
const fn next(&self) -> Self {
match self {
Self::FirstName => Self::LastName,
Self::LastName => Self::Age,
Self::Age => Self::FirstName,
}
}
}
/// A new-type representing a string field with a label.
#[derive(Debug, Serialize)]
struct StringField {
#[serde(skip)]
label: &'static str,
value: String,
}
impl StringField {
const fn new(label: &'static str) -> Self {
Self {
label,
value: String::new(),
}
}
/// Handle input events for the string input.
fn on_key_press(&mut self, event: KeyEvent) {
match event.code {
KeyCode::Char(c) => self.value.push(c),
KeyCode::Backspace => {
self.value.pop();
}
_ => {}
}
}
fn cursor_offset(&self) -> Offset {
let x = (self.label.len() + self.value.len() + 2) as i32;
Offset::new(x, 0)
}
}
impl Widget for &StringField {
fn render(self, area: Rect, buf: &mut Buffer) {
let constraints = [
Constraint::Length(self.label.len() as u16 + 2),
Constraint::Fill(1),
];
let [label_area, value_area] = Layout::horizontal(constraints).areas(area);
let label = Line::from_iter([self.label, ": "]).bold();
label.render(label_area, buf);
self.value.clone().render(value_area, buf);
}
}
/// A new-type representing a person's age in years (0-130).
#[derive(Default, Clone, Copy, Serialize)]
struct AgeField {
#[serde(skip)]
label: &'static str,
value: u8,
}
impl AgeField {
const MAX: u8 = 130;
const fn new(label: &'static str) -> Self {
Self { label, value: 0 }
}
/// Handle input events for the age input.
///
/// Digits are accepted as input, with any input which would exceed the maximum age being
/// ignored. The up/down arrow keys and 'j'/'k' keys can be used to increment/decrement the
/// age.
fn on_key_press(&mut self, event: KeyEvent) {
match event.code {
KeyCode::Char(digit @ '0'..='9') => {
let value = self
.value
.saturating_mul(10)
.saturating_add(digit as u8 - b'0');
if value <= Self::MAX {
self.value = value;
}
}
KeyCode::Backspace => self.value /= 10,
KeyCode::Up | KeyCode::Char('k') => self.increment(),
KeyCode::Down | KeyCode::Char('j') => self.decrement(),
_ => {}
};
}
fn increment(&mut self) {
self.value = self.value.saturating_add(1).min(Self::MAX);
}
fn decrement(&mut self) {
self.value = self.value.saturating_sub(1);
}
fn cursor_offset(&self) -> Offset {
let x = (self.label.len() + self.value.to_string().len() + 2) as i32;
Offset::new(x, 0)
}
}
impl Widget for &AgeField {
fn render(self, area: Rect, buf: &mut Buffer) {
let constraints = [
Constraint::Length(self.label.len() as u16 + 2),
Constraint::Fill(1),
];
let [label_area, value_area] = Layout::horizontal(constraints).areas(area);
let label = Line::from_iter([self.label, ": "]).bold();
let value = self.value.to_string();
label.render(label_area, buf);
value.render(value_area, buf);
}
}

View File

@@ -1,13 +0,0 @@
[package]
name = "minimal"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
crossterm.workspace = true
ratatui.workspace = true
[lints]
workspace = true

View File

@@ -1,9 +0,0 @@
# Minimal demo
This example shows how to create a minimal application.
To run this demo:
```shell
cargo run -p minimal
```

View File

@@ -1,31 +0,0 @@
/// A minimal example of a Ratatui application.
///
/// This is a bare minimum example. There are many approaches to running an application loop,
/// so this is not meant to be prescriptive. See the [examples] folder for more complete
/// examples. In particular, the [hello-world] example is a good starting point.
///
/// This example runs with the Ratatui library code in the branch that you are currently
/// reading. See the [`latest`] branch for the code which works with the most recent Ratatui
/// release.
///
/// [`latest`]: https://github.com/ratatui/ratatui/tree/latest
/// [examples]: https://github.com/ratatui/ratatui/blob/main/examples
/// [hello-world]: https://github.com/ratatui/ratatui/blob/main/examples/apps/hello-world
use crossterm::event::{self, Event};
use ratatui::{text::Text, Frame};
fn main() {
let mut terminal = ratatui::init();
loop {
terminal.draw(draw).expect("failed to draw frame");
if matches!(event::read().expect("failed to read event"), Event::Key(_)) {
break;
}
}
ratatui::restore();
}
fn draw(frame: &mut Frame) {
let text = Text::raw("Hello World!");
frame.render_widget(text, frame.area());
}

View File

@@ -1,15 +0,0 @@
[package]
name = "modifiers"
publish = false
license.workspace = true
edition.workspace = true
rust-version.workspace = true
[dependencies]
color-eyre.workspace = true
crossterm.workspace = true
itertools.workspace = true
ratatui.workspace = true
[lints]
workspace = true

Some files were not shown because too many files have changed in this diff Show More