mirror of
https://github.com/ratatui-org/ratatui
synced 2024-11-22 12:43:16 +00:00
366c2a0e6d
`Block::bordered()` is shorter than `Block::new().borders(Borders::ALL)`, requires one less import (`Borders`) and in case `Block::default()` was used before can even be `const`.
360 lines
10 KiB
Rust
360 lines
10 KiB
Rust
//! # [Ratatui] Chart 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-org/ratatui
|
|
//! [examples]: https://github.com/ratatui-org/ratatui/blob/main/examples
|
|
//! [examples readme]: https://github.com/ratatui-org/ratatui/blob/main/examples/README.md
|
|
|
|
use std::{
|
|
error::Error,
|
|
io,
|
|
time::{Duration, Instant},
|
|
};
|
|
|
|
use crossterm::{
|
|
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
|
|
execute,
|
|
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
|
|
};
|
|
use ratatui::{
|
|
prelude::*,
|
|
widgets::{block::Title, Axis, Block, Chart, Dataset, GraphType, LegendPosition},
|
|
};
|
|
|
|
#[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)
|
|
}
|
|
}
|
|
|
|
struct App {
|
|
signal1: SinSignal,
|
|
data1: Vec<(f64, f64)>,
|
|
signal2: SinSignal,
|
|
data2: Vec<(f64, f64)>,
|
|
window: [f64; 2],
|
|
}
|
|
|
|
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 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 main() -> Result<(), Box<dyn Error>> {
|
|
// setup terminal
|
|
enable_raw_mode()?;
|
|
let mut stdout = io::stdout();
|
|
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
|
|
let backend = CrosstermBackend::new(stdout);
|
|
let mut terminal = Terminal::new(backend)?;
|
|
|
|
// create app and run it
|
|
let tick_rate = Duration::from_millis(250);
|
|
let app = App::new();
|
|
let res = run_app(&mut terminal, app, tick_rate);
|
|
|
|
// restore terminal
|
|
disable_raw_mode()?;
|
|
execute!(
|
|
terminal.backend_mut(),
|
|
LeaveAlternateScreen,
|
|
DisableMouseCapture
|
|
)?;
|
|
terminal.show_cursor()?;
|
|
|
|
if let Err(err) = res {
|
|
println!("{err:?}");
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn run_app<B: Backend>(
|
|
terminal: &mut Terminal<B>,
|
|
mut app: App,
|
|
tick_rate: Duration,
|
|
) -> io::Result<()> {
|
|
let mut last_tick = Instant::now();
|
|
loop {
|
|
terminal.draw(|f| ui(f, &app))?;
|
|
|
|
let timeout = tick_rate.saturating_sub(last_tick.elapsed());
|
|
if crossterm::event::poll(timeout)? {
|
|
if let Event::Key(key) = event::read()? {
|
|
if key.code == KeyCode::Char('q') {
|
|
return Ok(());
|
|
}
|
|
}
|
|
}
|
|
if last_tick.elapsed() >= tick_rate {
|
|
app.on_tick();
|
|
last_tick = Instant::now();
|
|
}
|
|
}
|
|
}
|
|
|
|
fn ui(frame: &mut Frame, app: &App) {
|
|
let area = frame.size();
|
|
|
|
let vertical = Layout::vertical([Constraint::Percentage(40), Constraint::Percentage(60)]);
|
|
let horizontal = Layout::horizontal([Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)]);
|
|
let [chart1, bottom] = vertical.areas(area);
|
|
let [line_chart, scatter] = horizontal.areas(bottom);
|
|
|
|
render_chart1(frame, chart1, app);
|
|
render_line_chart(frame, line_chart);
|
|
render_scatter(frame, scatter);
|
|
}
|
|
|
|
fn render_chart1(f: &mut Frame, area: Rect, app: &App) {
|
|
let x_labels = vec![
|
|
Span::styled(
|
|
format!("{}", app.window[0]),
|
|
Style::default().add_modifier(Modifier::BOLD),
|
|
),
|
|
Span::raw(format!("{}", (app.window[0] + app.window[1]) / 2.0)),
|
|
Span::styled(
|
|
format!("{}", app.window[1]),
|
|
Style::default().add_modifier(Modifier::BOLD),
|
|
),
|
|
];
|
|
let datasets = vec![
|
|
Dataset::default()
|
|
.name("data2")
|
|
.marker(symbols::Marker::Dot)
|
|
.style(Style::default().fg(Color::Cyan))
|
|
.data(&app.data1),
|
|
Dataset::default()
|
|
.name("data3")
|
|
.marker(symbols::Marker::Braille)
|
|
.style(Style::default().fg(Color::Yellow))
|
|
.data(&app.data2),
|
|
];
|
|
|
|
let chart = Chart::new(datasets)
|
|
.block(Block::bordered().title("Chart 1".cyan().bold()))
|
|
.x_axis(
|
|
Axis::default()
|
|
.title("X Axis")
|
|
.style(Style::default().fg(Color::Gray))
|
|
.labels(x_labels)
|
|
.bounds(app.window),
|
|
)
|
|
.y_axis(
|
|
Axis::default()
|
|
.title("Y Axis")
|
|
.style(Style::default().fg(Color::Gray))
|
|
.labels(vec!["-20".bold(), "0".into(), "20".bold()])
|
|
.bounds([-20.0, 20.0]),
|
|
);
|
|
|
|
f.render_widget(chart, area);
|
|
}
|
|
|
|
fn render_line_chart(f: &mut Frame, area: Rect) {
|
|
let datasets = vec![Dataset::default()
|
|
.name("Line from only 2 points".italic())
|
|
.marker(symbols::Marker::Braille)
|
|
.style(Style::default().fg(Color::Yellow))
|
|
.graph_type(GraphType::Line)
|
|
.data(&[(1., 1.), (4., 4.)])];
|
|
|
|
let chart = Chart::new(datasets)
|
|
.block(
|
|
Block::bordered().title(
|
|
Title::default()
|
|
.content("Line chart".cyan().bold())
|
|
.alignment(Alignment::Center),
|
|
),
|
|
)
|
|
.x_axis(
|
|
Axis::default()
|
|
.title("X Axis")
|
|
.style(Style::default().gray())
|
|
.bounds([0.0, 5.0])
|
|
.labels(vec!["0".bold(), "2.5".into(), "5.0".bold()]),
|
|
)
|
|
.y_axis(
|
|
Axis::default()
|
|
.title("Y Axis")
|
|
.style(Style::default().gray())
|
|
.bounds([0.0, 5.0])
|
|
.labels(vec!["0".bold(), "2.5".into(), "5.0".bold()]),
|
|
)
|
|
.legend_position(Some(LegendPosition::TopLeft))
|
|
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
|
|
|
|
f.render_widget(chart, area);
|
|
}
|
|
|
|
fn render_scatter(f: &mut Frame, area: Rect) {
|
|
let datasets = vec![
|
|
Dataset::default()
|
|
.name("Heavy")
|
|
.marker(Marker::Dot)
|
|
.graph_type(GraphType::Scatter)
|
|
.style(Style::new().yellow())
|
|
.data(&HEAVY_PAYLOAD_DATA),
|
|
Dataset::default()
|
|
.name("Medium".underlined())
|
|
.marker(Marker::Braille)
|
|
.graph_type(GraphType::Scatter)
|
|
.style(Style::new().magenta())
|
|
.data(&MEDIUM_PAYLOAD_DATA),
|
|
Dataset::default()
|
|
.name("Small")
|
|
.marker(Marker::Dot)
|
|
.graph_type(GraphType::Scatter)
|
|
.style(Style::new().cyan())
|
|
.data(&SMALL_PAYLOAD_DATA),
|
|
];
|
|
|
|
let chart = Chart::new(datasets)
|
|
.block(
|
|
Block::bordered().title(
|
|
Title::default()
|
|
.content("Scatter chart".cyan().bold())
|
|
.alignment(Alignment::Center),
|
|
),
|
|
)
|
|
.x_axis(
|
|
Axis::default()
|
|
.title("Year")
|
|
.bounds([1960., 2020.])
|
|
.style(Style::default().fg(Color::Gray))
|
|
.labels(vec!["1960".into(), "1990".into(), "2020".into()]),
|
|
)
|
|
.y_axis(
|
|
Axis::default()
|
|
.title("Cost")
|
|
.bounds([0., 75000.])
|
|
.style(Style::default().fg(Color::Gray))
|
|
.labels(vec!["0".into(), "37 500".into(), "75 000".into()]),
|
|
)
|
|
.hidden_legend_constraints((Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)));
|
|
|
|
f.render_widget(chart, area);
|
|
}
|
|
|
|
// Data from https://ourworldindata.org/space-exploration-satellites
|
|
const HEAVY_PAYLOAD_DATA: [(f64, f64); 9] = [
|
|
(1965., 8200.),
|
|
(1967., 5400.),
|
|
(1981., 65400.),
|
|
(1989., 30800.),
|
|
(1997., 10200.),
|
|
(2004., 11600.),
|
|
(2014., 4500.),
|
|
(2016., 7900.),
|
|
(2018., 1500.),
|
|
];
|
|
|
|
const MEDIUM_PAYLOAD_DATA: [(f64, f64); 29] = [
|
|
(1963., 29500.),
|
|
(1964., 30600.),
|
|
(1965., 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.),
|
|
];
|