68 lines
1.8 KiB
Rust
68 lines
1.8 KiB
Rust
|
//
|
||
|
|
// cargo run --features event-stream --example event-stream-async-std
|
||
|
|
//
|
||
|
|
use std::io::{stdout, Write};
|
||
|
|
use std::time::Duration;
|
||
|
|
|
||
|
|
use futures::{future::FutureExt, select, StreamExt};
|
||
|
|
use futures_timer::Delay;
|
||
|
|
|
||
|
|
use crossterm::{
|
||
|
|
cursor::position,
|
||
|
|
event::{DisableMouseCapture, EnableMouseCapture, Event, EventStream, KeyCode},
|
||
|
|
execute,
|
||
|
|
screen::RawScreen,
|
||
|
|
Result,
|
||
|
|
};
|
||
|
|
|
||
|
|
const HELP: &str = r#"EventStream based on futures::Stream with async-std
|
||
|
|
- Keyboard, mouse and terminal resize events enabled
|
||
|
|
- Prints "." every second if there's no event
|
||
|
|
- Hit "c" to print current cursor position
|
||
|
|
- Use Esc to quit
|
||
|
|
"#;
|
||
|
|
|
||
|
|
async fn print_events() {
|
||
|
|
let mut reader = EventStream::new();
|
||
|
|
|
||
|
|
loop {
|
||
|
|
let mut delay = Delay::new(Duration::from_millis(1_000)).fuse();
|
||
|
|
let mut event = reader.next().fuse();
|
||
|
|
|
||
|
|
select! {
|
||
|
|
_ = delay => { println!(".\r"); },
|
||
|
|
maybe_event = event => {
|
||
|
|
match maybe_event {
|
||
|
|
Some(Ok(event)) => {
|
||
|
|
println!("Event::{:?}\r", event);
|
||
|
|
|
||
|
|
if event == Event::Key(KeyCode::Char('c').into()) {
|
||
|
|
println!("Cursor position: {:?}\r", position());
|
||
|
|
}
|
||
|
|
|
||
|
|
if event == Event::Key(KeyCode::Esc.into()) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Some(Err(e)) => println!("Error: {:?}\r", e),
|
||
|
|
None => break,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() -> Result<()> {
|
||
|
|
println!("{}", HELP);
|
||
|
|
|
||
|
|
let _r = RawScreen::into_raw_mode()?;
|
||
|
|
|
||
|
|
let mut stdout = stdout();
|
||
|
|
execute!(stdout, EnableMouseCapture)?;
|
||
|
|
|
||
|
|
async_std::task::block_on(print_events());
|
||
|
|
|
||
|
|
execute!(stdout, DisableMouseCapture)?;
|
||
|
|
Ok(())
|
||
|
|
}
|