136 lines
3.7 KiB
Rust
136 lines
3.7 KiB
Rust
extern crate crossterm;
|
|
|
|
use self::crossterm::{Crossterm, Screen};
|
|
use self::crossterm::terminal::ClearType;
|
|
use self::crossterm::input::input;
|
|
|
|
use std::{thread, time};
|
|
use std::io::{stdout, Read, Write};
|
|
use std::time::Duration;
|
|
|
|
/// this will capture the input until the given key.
|
|
pub fn read_async_until() {
|
|
// create raw screen
|
|
let screen = Screen::default();
|
|
let crossterm = Crossterm::new(&screen);
|
|
|
|
// init some modules we use for this demo
|
|
let input = crossterm.input();
|
|
let terminal = crossterm.terminal();
|
|
let mut cursor = crossterm.cursor();
|
|
|
|
let mut stdin = input.read_until_async(b'\r').bytes();
|
|
|
|
for _i in 0..100 {
|
|
terminal.clear(ClearType::All);
|
|
cursor.goto(1, 1);
|
|
let a = stdin.next();
|
|
|
|
println!("pressed key: {:?}", a);
|
|
|
|
if let Some(Ok(b'\r')) = a {
|
|
println!("The enter key is hit and program is not listening to input anymore.");
|
|
break;
|
|
}
|
|
|
|
if let Some(Ok(b'x')) = a {
|
|
println!("The key: x was pressed and program is terminated.");
|
|
break;
|
|
}
|
|
|
|
thread::sleep(time::Duration::from_millis(100));
|
|
}
|
|
}
|
|
|
|
/// this will read pressed characters async until `x` is typed.
|
|
pub fn read_async() {
|
|
let screen = Screen::default();
|
|
let input = input(&screen);
|
|
|
|
let mut stdin = input.read_async().bytes();
|
|
|
|
for _i in 0..100 {
|
|
let a = stdin.next();
|
|
|
|
println!("pressed key: {:?}", a);
|
|
|
|
if let Some(Ok(b'x')) = a {
|
|
println!("The key: `x` was pressed and program is terminated.");
|
|
break;
|
|
}
|
|
|
|
thread::sleep(time::Duration::from_millis(50));
|
|
}
|
|
}
|
|
|
|
pub fn read_async_demo() {
|
|
let screen = Screen::new(true);
|
|
let crossterm = Crossterm::new(&screen);
|
|
|
|
// init some modules we use for this demo
|
|
let input = crossterm.input();
|
|
let terminal = crossterm.terminal();
|
|
let mut cursor = crossterm.cursor();
|
|
|
|
// this will setup the async reading.
|
|
let mut stdin = input.read_async().bytes();
|
|
|
|
// clear terminal and reset the cursor.
|
|
terminal.clear(ClearType::All);
|
|
cursor.goto(1, 1);
|
|
|
|
// loop until the enter key (\r) is pressed.
|
|
loop {
|
|
terminal.clear(ClearType::All);
|
|
cursor.goto(1, 1);
|
|
|
|
// get the next pressed key
|
|
let pressed_key = stdin.next();
|
|
terminal.write(format!("{:?} <- Character pressed", pressed_key));
|
|
|
|
// check if pressed key is enter (\r)
|
|
if let Some(Ok(b'\r')) = pressed_key {
|
|
break;
|
|
}
|
|
|
|
// wait 200 ms and reset cursor write
|
|
thread::sleep(Duration::from_millis(200));
|
|
}
|
|
}
|
|
|
|
pub fn async_reading_on_alternate_screen() {
|
|
let screen = Screen::new(false);
|
|
|
|
// switch to alternate screen
|
|
if let Ok(alternate) = screen.enable_alternate_modes(true)
|
|
{
|
|
let crossterm = Crossterm::new(&alternate.screen);
|
|
// init some modules we use for this demo
|
|
let input = crossterm.input();
|
|
let terminal = crossterm.terminal();
|
|
let mut cursor = crossterm.cursor();
|
|
|
|
// this will setup the async reading.
|
|
let mut stdin = input.read_async().bytes();
|
|
|
|
// loop until the enter key (\r) is pressed.
|
|
loop {
|
|
terminal.clear(ClearType::All);
|
|
cursor.goto(1, 1);
|
|
|
|
// get the next pressed key
|
|
let pressed_key = stdin.next();
|
|
|
|
terminal.write(format!("{:?} <- Character pressed", pressed_key));
|
|
|
|
// check if pressed key is enter (\r)
|
|
if let Some(Ok(b'\r')) = pressed_key {
|
|
break;
|
|
}
|
|
|
|
// wait 200 ms and reset cursor write
|
|
thread::sleep(Duration::from_millis(200));
|
|
}
|
|
}
|
|
}
|