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|
extern crate xcb;
use std::iter::Iterator;
use std::sync::Arc;
use std::{thread, time};
use xcb::x;
fn main() -> xcb::Result<()> {
let (conn, screen_num) = {
let (conn, screen_num) = xcb::Connection::connect(None)?;
(Arc::new(conn), screen_num)
};
let setup = conn.get_setup();
let screen = setup.roots().nth(screen_num as usize).unwrap();
let window = conn.generate_id();
let values = [
x::Cw::BackPixel(screen.white_pixel()),
x::Cw::EventMask(
x::EventMask::EXPOSURE
| x::EventMask::KEY_PRESS
| x::EventMask::STRUCTURE_NOTIFY
| x::EventMask::PROPERTY_CHANGE,
),
];
let create_window_cookie = conn.send_request_checked(&x::CreateWindow {
depth: x::COPY_FROM_PARENT as u8,
wid: window,
parent: screen.root(),
x: 0,
y: 0,
width: 320,
height: 240,
border_width: 10,
class: x::WindowClass::InputOutput,
visual: screen.root_visual(),
value_list: &values,
});
conn.check_request(create_window_cookie)?;
let map_window_cookie = conn.send_request_checked(&x::MapWindow { window });
conn.check_request(map_window_cookie)?;
{
let conn = conn.clone();
thread::spawn(move || {
let mut blink = false;
loop {
let title = if blink {
"Basic Threaded Window ;-)"
} else {
"Basic Threaded Window :-)"
};
let cookie = conn.send_request_checked(&x::ChangeProperty {
mode: x::PropMode::Replace,
window,
property: x::ATOM_WM_NAME,
r#type: x::ATOM_STRING,
data: title.as_bytes(),
});
if conn.has_error().is_err() || conn.check_request(cookie).is_err() {
break;
}
blink = !blink;
thread::sleep(time::Duration::from_millis(500));
}
});
}
loop {
let event = conn.wait_for_event();
match event {
Ok(xcb::Event::X(x::Event::PropertyNotify(ev))) => {
if ev.atom() == x::ATOM_WM_NAME {
// retrieving title
let cookie = conn.send_request(&x::GetProperty {
delete: false,
window,
property: x::ATOM_WM_NAME,
r#type: x::ATOM_STRING,
long_offset: 0,
long_length: 1024,
});
let title = conn.wait_for_reply(cookie)?;
println!(
"title changed to \"{}\"",
std::str::from_utf8(title.value()).unwrap()
);
}
}
Ok(xcb::Event::X(x::Event::KeyPress(ev))) => {
println!("Key '{}' pressed", ev.detail());
if ev.detail() == 0x18 {
// Q (on qwerty)
break;
}
}
Ok(_) => {
continue;
}
Err(_) => {
break;
}
}
}
Ok(())
}
|
