GestureVelocityTrackerBuilder typedef Null safety

GestureVelocityTrackerBuilder = VelocityTracker Function(PointerEvent event)

Signature for a function that builds a VelocityTracker.

Used by DragGestureRecognizer.velocityTrackerBuilder.

Implementation

typedef GestureVelocityTrackerBuilder = VelocityTracker Function(PointerEvent event);