onDragUpdate property
getter/setter pair
A pointer that is in contact with the screen with a primary button and moving has moved again.
The distance traveled by the pointer since the last update is provided in
the callback's details argument, which is a TapDragUpdateDetails object.
The number of consecutive taps, and the keys that were pressed on tap down
are also provided in the callback's details argument.
See also:
- kPrimaryButton, the button this callback responds to.
- TapDragUpdateDetails, which is passed as an argument to this callback.
Implementation
GestureTapDragUpdateCallback? onDragUpdate;