minicrossterm/examples/command_bar.rs
2019-09-17 10:50:39 +02:00

99 lines
2.5 KiB
Rust

use std::sync::{Arc, Mutex};
use std::{thread, time};
use crossterm::{
cursor, input, terminal, ClearType, Crossterm, InputEvent, KeyEvent, RawScreen, Terminal,
TerminalCursor,
};
// cargo run --example command_bar
fn main() {
let _screen = RawScreen::into_raw_mode();
cursor().hide().expect("Couldn't hide cursor");
let input_buf = Arc::new(Mutex::new(String::new()));
let threads = log(input_buf.clone());
let mut count = 0;
thread::spawn(move || {
let input = input();
let mut stdin = input.read_async();
loop {
match stdin.next() {
Some(InputEvent::Keyboard(KeyEvent::Char('\n'))) => {
input_buf.lock().unwrap().clear();
}
Some(InputEvent::Keyboard(KeyEvent::Char(character))) => {
input_buf.lock().unwrap().push(character as char);
}
_ => {}
}
thread::sleep(time::Duration::from_millis(10));
count += 1;
}
})
.join()
.expect("Couldn't join");
for thread in threads {
thread.join().expect("Couldn't join");
}
cursor().show().expect("Couldn't show cursor");
}
fn log(input_buf: Arc<Mutex<String>>) -> Vec<thread::JoinHandle<()>> {
let mut threads = Vec::with_capacity(10);
let (_, term_height) = terminal().terminal_size();
for i in 0..1 {
let input_buffer = input_buf.clone();
let crossterm = Crossterm::new();
let join = thread::spawn(move || {
let cursor = crossterm.cursor();
let terminal = crossterm.terminal();
for j in 0..1000 {
swap_write(
format!("Some output: {} from thread: {}", j, i).as_ref(),
&input_buffer.lock().unwrap(),
&terminal,
&cursor,
term_height,
);
thread::sleep(time::Duration::from_millis(100));
}
});
threads.push(join);
}
return threads;
}
pub fn swap_write(
msg: &str,
input_buf: &String,
terminal: &Terminal,
cursor: &TerminalCursor,
term_height: u16,
) {
cursor.goto(0, term_height).expect("Couldn't goto");
terminal
.clear(ClearType::CurrentLine)
.expect("Couldn't clear current line");
terminal
.write(format!("{}\r\n", msg))
.expect("Couldn't write message");
terminal
.write(format!("> {}", input_buf))
.expect("Couldn't write prompt");
}