angle delta in degrees, clockwise rotations are represented by positive deltas
movement delta of the pinch focal point in the X axis
movement delta of the pinch focal point in the Y axis
event flags
the current phase of the gesture
the current scale
event source actor (unused)
event source stage
event time
event type
the X coordinate of the pointer, relative to the stage
the Y coordinate of the pointer, relative to the stage
Used for touchpad pinch gesture events. The current state of the gesture will be determined by the
phasefield.Each event with phase %CLUTTER_TOUCHPAD_GESTURE_PHASE_BEGIN will report a
scaleof 1.0, all later phases in the gesture report the current scale relative to the initial 1.0 value (eg. 0.5 being half the size, 2.0 twice as big).