3fb93b4f83
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.
62 lines
1.8 KiB
Rust
62 lines
1.8 KiB
Rust
//! A demonstration of embedding a winit window in an existing X11 application.
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use std::error::Error;
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#[cfg(x11_platform)]
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fn main() -> Result<(), Box<dyn Error>> {
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use simple_logger::SimpleLogger;
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use winit::{
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event::{Event, WindowEvent},
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event_loop::EventLoop,
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platform::x11::WindowAttributesExtX11,
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window::Window,
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};
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#[path = "util/fill.rs"]
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mod fill;
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// First argument should be a 32-bit X11 window ID.
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let parent_window_id = std::env::args()
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.nth(1)
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.ok_or("Expected a 32-bit X11 window ID as the first argument.")?
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.parse::<u32>()?;
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SimpleLogger::new().init().unwrap();
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let event_loop = EventLoop::new()?;
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let mut window = None;
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event_loop.run(move |event, event_loop| match event {
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Event::Resumed => {
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let window_attributes = Window::default_attributes()
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.with_title("An embedded window!")
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.with_inner_size(winit::dpi::LogicalSize::new(128.0, 128.0))
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.with_embed_parent_window(parent_window_id);
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window = Some(event_loop.create_window(window_attributes).unwrap());
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}
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Event::WindowEvent { event, .. } => {
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let window = window.as_ref().unwrap();
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match event {
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WindowEvent::CloseRequested => event_loop.exit(),
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WindowEvent::RedrawRequested => {
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window.pre_present_notify();
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fill::fill_window(window);
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}
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_ => (),
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}
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}
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Event::AboutToWait => {
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window.as_ref().unwrap().request_redraw();
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}
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_ => (),
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})?;
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Ok(())
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}
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#[cfg(not(x11_platform))]
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fn main() -> Result<(), Box<dyn Error>> {
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println!("This example is only supported on X11 platforms.");
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Ok(())
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}
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