winit-sonoma-fix/examples/multiwindow.rs

#![allow(clippy::single_match)]

use std::collections::HashMap;

use simple_logger::SimpleLogger;
use winit::{
    event::{ElementState, Event, KeyEvent, WindowEvent},
    event_loop::EventLoop,
    keyboard::Key,
    window::Window,
};

#[path = "util/fill.rs"]
mod fill;

fn main() -> Result<(), impl std::error::Error> {
    SimpleLogger::new().init().unwrap();
    let event_loop = EventLoop::new().unwrap();

    let mut windows = HashMap::new();
    for _ in 0..3 {
        let window = Window::new(&event_loop).unwrap();
        println!("Opened a new window: {:?}", window.id());
        windows.insert(window.id(), window);
    }

    println!("Press N to open a new window.");

    event_loop.run(move |event, event_loop, control_flow| {
        control_flow.set_wait();

        if let Event::WindowEvent { event, window_id } = event {
            match event {
                WindowEvent::CloseRequested => {
                    println!("Window {window_id:?} has received the signal to close");

                    // This drops the window, causing it to close.
                    windows.remove(&window_id);

                    if windows.is_empty() {
                        control_flow.set_exit();
                    }
                }
                WindowEvent::KeyboardInput {
                    event:
                        KeyEvent {
                            state: ElementState::Pressed,
                            logical_key: Key::Character(c),
                            ..
                        },
                    is_synthetic: false,
                    ..
                } if matches!(c.as_ref(), "n" | "N") => {
                    let window = Window::new(event_loop).unwrap();
                    println!("Opened a new window: {:?}", window.id());
                    windows.insert(window.id(), window);
                }
                WindowEvent::RedrawRequested => {
                    if let Some(window) = windows.get(&window_id) {
                        fill::fill_window(window);
                    }
                }
                _ => (),
            }
        }
    })
}