registerOnPinchSwipe method

void registerOnPinchSwipe(
  1. PinchSwipeCallback? pinchSwipeCallback
)

Registers a callback for two-pointer pinch-swipe gestures.

A pinch-swipe occurs when two pointers touch, then move quickly to zoom or rotate while lifting.

Parameters

  • pinchSwipeCallback: (PinchSwipeCallback?) Receives the gesture center and zoom/rotation speeds. Pass null to unsubscribe.

Implementation

void registerOnPinchSwipe(final PinchSwipeCallback? pinchSwipeCallback) {
  _pinchSwipeCallback = pinchSwipeCallback;

  GemKitPlatform.instance.filterEvent(
    pointerId,
    'onPinchSwipe',
    pinchSwipeCallback == null,
  );
}