read / write
A pointer that was previously in contact with the screen with a primary button and moving is no longer in contact with the screen and was moving at a specific velocity when it stopped contacting the screen.
The velocity is provided in the callback's
details argument, which is a
If this gesture recognizer recognizes movement on a single axis (a
VerticalDragGestureRecognizer or HorizontalDragGestureRecognizer),
details will reflect movement only on that axis and its
DragEndDetails.primaryVelocity will be non-null.
If this gesture recognizer recognizes movement in all directions
(a PanGestureRecognizer), then
details will reflect movement on
both axes and its DragEndDetails.primaryVelocity will be null.
allowedButtonsFilter, which decides which button will be allowed.
- DragEndDetails, which is passed as an argument to this callback.