tui-rs/examples/crossterm_demo.rs
2019-02-10 23:28:31 +01:00

91 lines
2.0 KiB
Rust

#[allow(dead_code)]
mod demo;
#[allow(dead_code)]
mod util;
use std::sync::mpsc;
use std::thread;
use std::time::Duration;
use structopt::StructOpt;
use tui::backend::CrosstermBackend;
use tui::Terminal;
use crate::demo::{ui, App};
enum Event<I> {
Input(I),
Tick,
}
#[derive(Debug, StructOpt)]
struct Cli {
#[structopt(long = "tick-rate", default_value = "250")]
tick_rate: u64,
#[structopt(long = "log")]
log: bool,
}
fn main() -> Result<(), failure::Error> {
let cli = Cli::from_args();
stderrlog::new().quiet(!cli.log).verbosity(4).init()?;
let backend = CrosstermBackend::new();
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
// Setup input handling
let (tx, rx) = mpsc::channel();
{
let tx = tx.clone();
thread::spawn(move || {
let input = crossterm::input();
loop {
match input.read_char() {
Ok(key) => {
if let Err(_) = tx.send(Event::Input(key)) {
return;
}
if key == 'q' {
return;
}
}
Err(_) => {}
}
}
});
}
{
let tx = tx.clone();
thread::spawn(move || {
let tx = tx.clone();
loop {
tx.send(Event::Tick).unwrap();
thread::sleep(Duration::from_millis(cli.tick_rate));
}
});
}
let mut app = App::new("Crossterm Demo");
terminal.clear()?;
loop {
ui::draw(&mut terminal, &app)?;
match rx.recv()? {
Event::Input(key) => {
// TODO: handle key events once they are supported by crossterm
app.on_key(key);
}
Event::Tick => {
app.on_tick();
}
}
if app.should_quit {
break;
}
}
Ok(())
}