A finished gesture may have 2 possible outcomes, an event with phase
Clutter.TouchpadGesturePhase.END will be emitted when the gesture is
considered successful, this should be used as the hint to perform any
permanent changes.
Cancelled gestures may be so for a variety of reasons, due to hardware,
or due to the gesture recognition layers hinting the gesture did not
finish resolutely (eg. a 3rd finger being added during a pinch gesture).
In these cases, the last event with report the phase
Clutter.TouchpadGesturePhase.CANCEL, this should be used as a hint
to undo any visible/permanent changes that were done throughout the
progress of the gesture.
The phase of a touchpad gesture event.
All gestures are guaranteed to begin with an event of type Clutter.TouchpadGesturePhase.BEGIN, followed by a number of Clutter.TouchpadGesturePhase.UPDATE (possibly 0).
A finished gesture may have 2 possible outcomes, an event with phase Clutter.TouchpadGesturePhase.END will be emitted when the gesture is considered successful, this should be used as the hint to perform any permanent changes.
Cancelled gestures may be so for a variety of reasons, due to hardware, or due to the gesture recognition layers hinting the gesture did not finish resolutely (eg. a 3rd finger being added during a pinch gesture). In these cases, the last event with report the phase Clutter.TouchpadGesturePhase.CANCEL, this should be used as a hint to undo any visible/permanent changes that were done throughout the progress of the gesture.
See also Clutter.TouchpadPinchEvent and Clutter.TouchpadPinchEvent.4