winiteventhelper

winiteventhelper is a crate intended to make winit event handling easier using callback functions without taking over the main loop.

Usage

winiteventhelper comes with the EventHelper struct, which handles all the callbacks and various miscellaneous things (see [EventHelper]). The user can also create their own struct and implement its functions using the [addcallback] and [insertcallback] macros.

Example (using the EventHelper struct)

```rust

use winit::event::{ElementState, VirtualKeyCode, MouseButton}; use winit::event_loop::{EventLoop, ControlFlow};

struct Data { counter: usize }

fn main() { let mut event_loop = EventLoop::new(); let mut eh = EventHelper::new( Data { counter: 0 } );

// is called whenever the given mouse button is in the given state
eh.mouse_input(MouseButton::Left, ElementState::Pressed, |data| data.counter += 1);

// is called whenever a keyboard button is pressed
eh.keyboard_any(|_, (keycode, state)| {
    if (state == ElementState::Pressed) {
        println!("{:?}", keycode);
    }
});

event_loop.run(move |event, _, control_flow| {
    // feed the events to the EventHelper struct
    // returns true when it receives MainEventsCleared
    if !eh.update(&event) {
        return;
    }

    // returns true if the given key is being held
    if eh.key_held(VirtualKeyCode::Escape) {
        *control_flow = ControlFlow::Exit;
    }
})

} ```