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https://github.com/ratatui/ratatui.git
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6dcd53bc6b
This commit introduces new methods for the `Rect` struct that simplify
the process of splitting a `Rect` into sub-rects according to a given
`Layout`. By putting these methods on the `Rect` struct, we make it a
bit more natural that a layout is applied to the `Rect` itself, rather
than passing a `Rect` to the `Layout` struct to be split.
Adds:
- `Rect::layout` and `Rect::try_layout` methods that allow splitting a
`Rect` into an array of sub-rects according to a given `Layout`.
- `Rect::layout_vec` method that returns a `Vec` of sub-rects.
- `Layout::try_areas` method that returns an array of sub-rects, with
compile-time checks for the number of constraints. This is added
mainly for consistency with the new `Rect` methods.
```rust
use ratatui_core::layout::{Layout, Constraint, Rect};
let area = Rect::new(0, 0, 10, 10);
let layout = Layout::vertical([Constraint::Fill(1); 2]);
// Rect::layout() infers the number of constraints at compile time:
let [top, main] = area.layout(&layout);
// Rect::try_layout() and Layout::try_areas() do the same, but return a
// Result:
let [top, main] = area.try_layout(&layout)?;
let [top, main] = layout.try_areas(area)?;
// Rect::layout_vec() returns a Vec of sub-rects:
let areas_vec = area.layout_vec(&layout);
// you can also explicitly specify the number of constraints:
let areas = area.layout::<2>(&layout);
let areas = area.try_layout::<2>(&layout)?;
let areas = layout.try_areas::<2>(area)?;
```
85 lines
2.5 KiB
Rust
85 lines
2.5 KiB
Rust
//! # [Ratatui] `Chart` example
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//!
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//! The latest version of this example is available in the [widget examples] folder in the
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//! repository.
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//!
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//! Please note that the examples are designed to be run against the `main` branch of the Github
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//! repository. This means that you may not be able to compile with the latest release version on
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//! crates.io, or the one that you have installed locally.
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//!
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//! See the [examples readme] for more information on finding examples that match the version of the
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//! library you are using.
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//!
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//! [Ratatui]: https://github.com/ratatui/ratatui
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//! [widget examples]: https://github.com/ratatui/ratatui/blob/main/ratatui-widgets/examples
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//! [examples readme]: https://github.com/ratatui/ratatui/blob/main/examples/README.md
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use color_eyre::Result;
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use crossterm::event;
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use ratatui::Frame;
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use ratatui::layout::{Constraint, Layout, Rect};
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use ratatui::style::{Color, Stylize};
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use ratatui::symbols::Marker;
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use ratatui::text::{Line, Span};
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use ratatui::widgets::{Axis, Chart, Dataset, GraphType};
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fn main() -> Result<()> {
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color_eyre::install()?;
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ratatui::run(|terminal| {
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loop {
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terminal.draw(render)?;
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if event::read()?.is_key_press() {
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break Ok(());
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}
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}
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})
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}
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/// Render the UI with a chart.
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fn render(frame: &mut Frame) {
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let layout = Layout::vertical([Constraint::Length(1), Constraint::Fill(1)]).spacing(1);
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let [top, main] = frame.area().layout(&layout);
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let title = Line::from_iter([
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Span::from("Chart Widget").bold(),
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Span::from(" (Press 'q' to quit)"),
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]);
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frame.render_widget(title.centered(), top);
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render_chart(frame, main);
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}
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/// Render a chart going upward.
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pub fn render_chart(frame: &mut Frame, area: Rect) {
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let dataset = Dataset::default()
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.name("Stonks")
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.marker(Marker::Braille)
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.graph_type(GraphType::Line)
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.style(Color::Blue)
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.data(&[
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(0.0, 1.0),
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(1.0, 3.0),
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(2.0, 0.5),
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(3.0, 2.0),
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(4.0, 0.8),
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(5.0, 4.0),
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(6.0, 1.0),
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(7.0, 6.0),
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(8.0, 3.0),
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(10.0, 10.0),
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]);
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let x_axis = Axis::default()
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.title("Hustle".blue())
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.bounds([0.0, 10.0])
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.labels(["0%", "50%", "100%"]);
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let y_axis = Axis::default()
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.title("Profit".blue())
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.bounds([0.0, 10.0])
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.labels(["0", "5", "10"]);
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let chart = Chart::new(vec![dataset]).x_axis(x_axis).y_axis(y_axis);
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frame.render_widget(chart, area);
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}
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