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fix(examples): improve input handling in crossterm demo

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* avoid stacking events
* ensure tick events are sent at the given tick rate (and not everytime a key is pressed).
This commit is contained in:
Florian Dehau 2020-04-14 17:21:56 +02:00
parent 8387b32bb8
commit e81af75427
1 changed files with 7 additions and 4 deletions
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11
examples/crossterm_demo.rs
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@ -15,7 +15,7 @@ use std::{
io::{stdout, Write},
sync::mpsc,
thread,
time::Duration,
time::{Duration, Instant},
};
use tui::{backend::CrosstermBackend, Terminal};
@ -53,15 +53,18 @@ fn main() -> Result<(), Box<dyn Error>> {
let tick_rate = Duration::from_millis(cli.tick_rate);
thread::spawn(move || {
let mut last_tick = Instant::now();
loop {
// poll for tick rate duration, if no events, sent tick event.
if event::poll(tick_rate).unwrap() {
if event::poll(tick_rate - last_tick.elapsed()).unwrap() {
if let CEvent::Key(key) = event::read().unwrap() {
tx.send(Event::Input(key)).unwrap();
}
}
tx.send(Event::Tick).unwrap();
if last_tick.elapsed() >= tick_rate {
tx.send(Event::Tick).unwrap();
last_tick = Instant::now();
}
}
});