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Deprecate window creation with stale event loop

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Creating window when event loop is not running generally doesn't work,
since a bunch of events and sync OS requests can't be processed. This
is also an issue on e.g. Android, since window can't be created outside
event loop easily.

Thus deprecate the window creation when event loop is not running,
as well as other resource creation to running event loop.

Given that all the examples use the bad pattern of creating the window
when event loop is not running and also most example existence is
questionable, since they show single thing and the majority of their
code is window/event loop initialization, they wore merged into
a single example 'window.rs' example that showcases very simple
application using winit.

Fixes #3399.
This commit is contained in:
Kirill Chibisov 2024-01-31 17:29:59 +04:00
parent 19190a95a0
commit 3fb93b4f83
90 changed files with 1594 additions and 3495 deletions
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74
examples/window_pump_events.rs
View file

@ -1,74 +0,0 @@
#![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::Window,
};
#[path = "util/fill.rs"]
mod fill;
let mut event_loop = EventLoop::new().unwrap();
SimpleLogger::new().init().unwrap();
let window = Window::builder()
.with_title("A fantastic window!")
.build(&event_loop)
.unwrap();
'main: loop {
let timeout = Some(Duration::ZERO);
let status = event_loop.pump_events(timeout, |event, elwt| {
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() => elwt.exit(),
Event::AboutToWait => {
window.request_redraw();
}
Event::WindowEvent {
event: WindowEvent::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, web_platform, orbital_platform))]
fn main() {
println!("This platform doesn't support pump_events.");
}