gtk:gesture-single, gtk:gesture, gtk:event-controller, gobject:object, common-lisp:standard-object, common-lisp:t

None

The gtk:gesture-swipe class is a gtk:gesture implementation for swipe gestures. After a press/move/.../move/release sequence happens, the "swipe" signal will be emitted, providing the velocity and directionality of the sequence at the time it was lifted.

If the velocity is desired in intermediate points, the gtk:gesture-swipe-velocity function can be called in a "update" signal handler for the gdk:frame-clock object. All velocities are reported in pixels/sec units.

The "swipe" signal

lambda (gesture xvel yvel)    :run-last      

gesture

The gtk:gesture-swipe object which received the signal.

xvel

The double float with the velocity in the x axis, in pixels/sec.

yvel

The double float with the velocity in the y axis, in pixels/sec.

The signal is emitted when the recognized gesture is finished, velocity and direction are a product of previously recorded events.