onGestureStart property

void Function(GestureType gestureType, Offset offset) onGestureStart

Only these types of gesture will be detected on onGestureStart GestureType.kTwoFingerDrag GestureType.kThreeFingerDrag GestureType.kFourFingerDrag

Implementation

final void Function(GestureType gestureType, Offset offset) onGestureStart;