winit-sonoma-fix/examples/window_pump_events.rs
Robert Bragg 289ce32d77 Add examples/window_pump_events
A minimal example of an application based on an external event loop that
calls `pump_events` for each iteration of the external loop.
2023-07-28 03:04:32 +04:00

71 lines
2 KiB
Rust

#![allow(clippy::single_match)]
// Limit this example to only compatible platforms.
#[cfg(any(
windows_platform,
macos_platform,
x11_platform,
wayland_platform,
android_platform,
))]
fn main() -> std::process::ExitCode {
use std::{process::ExitCode, thread::sleep, time::Duration};
use simple_logger::SimpleLogger;
use winit::{
event::{Event, WindowEvent},
event_loop::EventLoop,
platform::pump_events::{EventLoopExtPumpEvents, PumpStatus},
window::WindowBuilder,
};
#[path = "util/fill.rs"]
mod fill;
let mut event_loop = EventLoop::new();
SimpleLogger::new().init().unwrap();
let window = WindowBuilder::new()
.with_title("A fantastic window!")
.build(&event_loop)
.unwrap();
'main: loop {
let status = event_loop.pump_events(|event, _, control_flow| {
if let Event::WindowEvent { event, .. } = &event {
// Print only Window events to reduce noise
println!("{event:?}");
}
match event {
Event::WindowEvent {
event: WindowEvent::CloseRequested,
window_id,
} if window_id == window.id() => control_flow.set_exit(),
Event::MainEventsCleared => {
window.request_redraw();
}
Event::RedrawRequested(_) => {
fill::fill_window(&window);
}
_ => (),
}
});
if let PumpStatus::Exit(exit_code) = status {
break 'main ExitCode::from(exit_code as u8);
}
// Sleep for 1/60 second to simulate application work
//
// Since `pump_events` doesn't block it will be important to
// throttle the loop in the app somehow.
println!("Update()");
sleep(Duration::from_millis(16));
}
}
#[cfg(any(ios_platform, wasm_platform, orbital_platform))]
fn main() {
println!("This platform doesn't support pump_events.");
}