onScaleStart property
Triggered when the touch point begins to interact with the screen, and a focus of 1.0 will be established at the same time.
Implementation
final GestureScaleStartCallback? onScaleStart;
Triggered when the touch point begins to interact with the screen, and a focus of 1.0 will be established at the same time.
final GestureScaleStartCallback? onScaleStart;