Class PointerPinchHandler

Pointer-based pinch event handler module. Handles pointerdown/pointermove/pointerup events for pinch-to-zoom gestures. Works on Windows touchscreens, Android, and other platforms supporting Pointer Events.

Index

Constructors

Methods

end hook start unhook

Constructors

constructor

new PointerPinchHandler(
ctx: EventContext,
dragHandler: DragHandler,
): PointerPinchHandler
Parameters
- ctx: EventContext
- dragHandler: DragHandler
Returns PointerPinchHandler

Methods

end

end(e: PointerEvent): void
Handles pointer up/cancel - always called to track active pointers. Also ends pinch gesture when needed.
Parameters
- e: PointerEvent
  The PointerEvent.
Returns void

hook

hook(): void
Hooks pointer pinch event listeners.

Returns void

start

start(e: PointerEvent): void
Handles pointer down for multi-touch pinch detection.
Parameters
- e: PointerEvent
  The PointerEvent.
Returns void

unhook

unhook(): void
Unhooks pointer pinch event listeners.

Returns void