winit-sonoma-fix/examples/grabbing.rs
Erik Rigtorp f3ccdb7aec Add keyboard modifiers to input event
Making applications track modifier keys results in unnecessary work for
consumers, it's error prone, and it turns out to have unavoidable bugs.
For example, alt-tabbing with x11 results in the alt modifier state
getting stuck.

To resolve these problems, this patch adds a Mods value to the keyboard
input event.

Based on this patch: d287fa96e3
2017-02-27 13:36:11 -06:00

43 lines
1.3 KiB
Rust

extern crate winit;
use winit::{WindowEvent, ElementState};
fn main() {
let events_loop = winit::EventsLoop::new();
let window = winit::WindowBuilder::new().build(&events_loop).unwrap();
window.set_title("winit - Cursor grabbing test");
let mut grabbed = false;
events_loop.run_forever(|event| {
println!("{:?}", event);
match event {
winit::Event::WindowEvent { event, .. } => {
match event {
WindowEvent::KeyboardInput(ElementState::Pressed, _, _, _) => {
if grabbed {
grabbed = false;
window.set_cursor_state(winit::CursorState::Normal)
.ok().expect("could not ungrab mouse cursor");
} else {
grabbed = true;
window.set_cursor_state(winit::CursorState::Grab)
.ok().expect("could not grab mouse cursor");
}
},
WindowEvent::Closed => events_loop.interrupt(),
a @ WindowEvent::MouseMoved(_, _) => {
println!("{:?}", a);
},
_ => (),
}
},
}
});
}