[−][src]Trait wayland_protocols::unstable::pointer_gestures::v1::client::zwp_pointer_gesture_swipe_v1::EventHandler

pub trait EventHandler {
    fn begin(
        &mut self, 
        object: ZwpPointerGestureSwipeV1, 
        serial: u32, 
        time: u32, 
        surface: WlSurface, 
        fingers: u32
    ) { ... }
    fn update(
        &mut self, 
        object: ZwpPointerGestureSwipeV1, 
        time: u32, 
        dx: f64, 
        dy: f64
    ) { ... }
    fn end(
        &mut self, 
        object: ZwpPointerGestureSwipeV1, 
        serial: u32, 
        time: u32, 
        cancelled: i32
    ) { ... }
}

An interface for handling events.

Provided methods

`fn begin( &mut self, object: ZwpPointerGestureSwipeV1, serial: u32, time: u32, surface: WlSurface, fingers: u32 )`

multi-finger swipe begin

This event is sent when a multi-finger swipe gesture is detected on the device.

`fn update( &mut self, object: ZwpPointerGestureSwipeV1, time: u32, dx: f64, dy: f64 )`

multi-finger swipe motion

This event is sent when a multi-finger swipe gesture changes the position of the logical center.

The dx and dy coordinates are relative coordinates of the logical center of the gesture compared to the previous event.

`fn end( &mut self, object: ZwpPointerGestureSwipeV1, serial: u32, time: u32, cancelled: i32 )`

multi-finger swipe end

This event is sent when a multi-finger swipe gesture ceases to be valid. This may happen when one or more fingers are lifted or the gesture is cancelled.

When a gesture is cancelled, the client should undo state changes caused by this gesture. What causes a gesture to be cancelled is implementation-dependent.

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Implementors