dispatchPointerEvent method

  1. @override
Future<void> dispatchPointerEvent(
  1. PointerEvent event
)
override

Converts the PointerEvent and sends an Android MotionEvent to the view.

This method can only be used if a PointTransformer is provided to AndroidViewController.pointTransformer. Otherwise, an AssertionError is thrown. See AndroidViewController.sendMotionEvent for sending a MotionEvent without a PointTransformer.

The Android MotionEvent object is created with MotionEvent.obtain. See documentation of MotionEvent.obtain for description of the parameters.

Implementation

@override
Future<void> dispatchPointerEvent(PointerEvent event) async {
  if (event is PointerHoverEvent) {
    return;
  }

  if (event is PointerDownEvent) {
    _motionEventConverter.handlePointerDownEvent(event);
  }

  _motionEventConverter.updatePointerPositions(event);

  final AndroidMotionEvent? androidEvent = _motionEventConverter.toAndroidMotionEvent(event);

  if (event is PointerUpEvent) {
    _motionEventConverter.handlePointerUpEvent(event);
  } else if (event is PointerCancelEvent) {
    _motionEventConverter.handlePointerCancelEvent(event);
  }

  if (androidEvent != null) {
    await sendMotionEvent(androidEvent);
  }
}