winit-sonoma-fix/examples/theme.rs

#![allow(clippy::single_match)]

use simple_logger::SimpleLogger;
use winit::{
    event::{Event, WindowEvent},
    event_loop::{ControlFlow, EventLoop},
    window::{Theme, WindowBuilder},
};

fn main() {
    SimpleLogger::new().init().unwrap();
    let event_loop = EventLoop::new();

    let window = WindowBuilder::new()
        .with_title("A fantastic window!")
        .with_theme(Some(Theme::Dark))
        .build(&event_loop)
        .unwrap();

    println!("Initial theme: {:?}", window.theme());

    event_loop.run(move |event, _, control_flow| {
        *control_flow = ControlFlow::Wait;

        match event {
            Event::WindowEvent {
                event: WindowEvent::CloseRequested,
                ..
            } => *control_flow = ControlFlow::Exit,
            Event::WindowEvent {
                event: WindowEvent::ThemeChanged(theme),
                window_id,
                ..
            } if window_id == window.id() => {
                println!("Theme is changed: {:?}", theme)
            }
            _ => (),
        }
    });
}