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

None

The gtk:gesture-rotate object is a gtk:gesture implementation able to recognize 2-finger rotations, whenever the angle between both handled sequences changes, the "angle-changed" signal is emitted.

The "angle-changed" signal

lambda (gesture angle delta)    :run-first    

gesture

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

angle

The double float with the current angle in radians.

delta

The double float with the difference with the starting angle, in radians.

The signal is emitted when the angle between both tracked points changes.