GestureScaleStartCallback typedef
Signature for when the pointers in contact with the screen have established a focal point and initial scale of 1.0.
Implementation
typedef GestureScaleStartCallback = void Function(ScaleStartDetails details);Signature for when the pointers in contact with the screen have established a focal point and initial scale of 1.0.
typedef GestureScaleStartCallback = void Function(ScaleStartDetails details);