Vendor things

third-party/vendor/winit/examples/handling_close.rs

@@ -0,0 +1,86 @@
+#![allow(clippy::single_match)]
+
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{Event, KeyboardInput, WindowEvent},
+    event_loop::EventLoop,
+    window::WindowBuilder,
+};
+
+fn main() {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new();
+
+    let _window = WindowBuilder::new()
+        .with_title("Your faithful window")
+        .build(&event_loop)
+        .unwrap();
+
+    let mut close_requested = false;
+
+    event_loop.run(move |event, _, control_flow| {
+        use winit::event::{
+            ElementState::Released,
+            VirtualKeyCode::{N, Y},
+        };
+        control_flow.set_wait();
+
+        match event {
+            Event::WindowEvent { event, .. } => {
+                match event {
+                    WindowEvent::CloseRequested => {
+                        // `CloseRequested` is sent when the close button on the window is pressed (or
+                        // through whatever other mechanisms the window manager provides for closing a
+                        // window). If you don't handle this event, the close button won't actually do
+                        // anything.
+
+                        // A common thing to do here is prompt the user if they have unsaved work.
+                        // Creating a proper dialog box for that is far beyond the scope of this
+                        // example, so here we'll just respond to the Y and N keys.
+                        println!("Are you ready to bid your window farewell? [Y/N]");
+                        close_requested = true;
+
+                        // In applications where you can safely close the window without further
+                        // action from the user, this is generally where you'd handle cleanup before
+                        // closing the window. How to close the window is detailed in the handler for
+                        // the Y key.
+                    }
+                    WindowEvent::KeyboardInput {
+                        input:
+                            KeyboardInput {
+                                virtual_keycode: Some(virtual_code),
+                                state: Released,
+                                ..
+                            },
+                        ..
+                    } => {
+                        match virtual_code {
+                            Y => {
+                                if close_requested {
+                                    // This is where you'll want to do any cleanup you need.
+                                    println!("Buh-bye!");
+
+                                    // For a single-window application like this, you'd normally just
+                                    // break out of the event loop here. If you wanted to keep running the
+                                    // event loop (i.e. if it's a multi-window application), you need to
+                                    // drop the window. That closes it, and results in `Destroyed` being
+                                    // sent.
+                                    control_flow.set_exit();
+                                }
+                            }
+                            N => {
+                                if close_requested {
+                                    println!("Your window will continue to stay by your side.");
+                                    close_requested = false;
+                                }
+                            }
+                            _ => (),
+                        }
+                    }
+                    _ => (),
+                }
+            }
+            _ => (),
+        }
+    });
+}