70 lines
2.2 KiB
Rust
70 lines
2.2 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 winit::application::ApplicationHandler;
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use winit::event::WindowEvent;
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use winit::event_loop::{ActiveEventLoop, EventLoop};
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use winit::platform::x11::WindowAttributesExtX11;
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use winit::window::{Window, WindowId};
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#[path = "util/fill.rs"]
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mod fill;
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pub struct XEmbedDemo {
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parent_window_id: u32,
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window: Option<Window>,
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}
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impl ApplicationHandler for XEmbedDemo {
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fn resumed(&mut self, event_loop: &ActiveEventLoop) {
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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(self.parent_window_id);
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self.window = Some(event_loop.create_window(window_attributes).unwrap());
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}
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fn window_event(
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&mut self,
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event_loop: &ActiveEventLoop,
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_window_id: WindowId,
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event: WindowEvent,
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) {
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let window = self.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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fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
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self.window.as_ref().unwrap().request_redraw();
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}
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}
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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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tracing_subscriber::fmt::init();
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let event_loop = EventLoop::new()?;
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let mut app = XEmbedDemo { parent_window_id, window: None };
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event_loop.run_app(&mut app).map_err(Into::into)
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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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