ScaleEndEvent 继承自： Event[EventControlType]

End payload for scale/transform interaction sequences.

属性

名称	类型	默认值	说明
pointer_count	int	metadata={'data_field': 'pc'}	The number of pointers being tracked by the gesture recognizer. Typically this is the number of fingers being used to pan the control using the gesture recognizer.
velocity	Offset	metadata={'data_field': 'v'}	The velocity of the last pointer to be lifted off of the screen, in pixels per second.