winit-sonoma-fix/examples/cursor_grab.rs
Osspial 028d3ec16d
Make examples set control_flow in a more realistic way (#1363)
* Make examples set control_flow in a more realistic way

* Format
2020-01-05 02:12:03 -05:00

55 lines
2 KiB
Rust

use winit::{
event::{DeviceEvent, ElementState, Event, KeyboardInput, ModifiersState, WindowEvent},
event_loop::{ControlFlow, EventLoop},
window::WindowBuilder,
};
fn main() {
let event_loop = EventLoop::new();
let window = WindowBuilder::new()
.with_title("Super Cursor Grab'n'Hide Simulator 9000")
.build(&event_loop)
.unwrap();
let mut modifiers = ModifiersState::default();
event_loop.run(move |event, _, control_flow| {
*control_flow = ControlFlow::Wait;
match event {
Event::WindowEvent { event, .. } => match event {
WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
WindowEvent::KeyboardInput {
input:
KeyboardInput {
state: ElementState::Released,
virtual_keycode: Some(key),
..
},
..
} => {
use winit::event::VirtualKeyCode::*;
match key {
Escape => *control_flow = ControlFlow::Exit,
G => window.set_cursor_grab(!modifiers.shift()).unwrap(),
H => window.set_cursor_visible(modifiers.shift()),
_ => (),
}
}
_ => (),
},
Event::DeviceEvent { event, .. } => match event {
DeviceEvent::MouseMotion { delta } => println!("mouse moved: {:?}", delta),
DeviceEvent::Button { button, state } => match state {
ElementState::Pressed => println!("mouse button {} pressed", button),
ElementState::Released => println!("mouse button {} released", button),
},
DeviceEvent::ModifiersChanged(m) => modifiers = m,
_ => (),
},
_ => (),
}
});
}