Class
GtkGestureZoom
Description [src]
final class Gtk.GestureZoom : Gtk.Gesture
{
/* No available fields */
}GtkGestureZoom is a GtkGesture for 2-finger pinch/zoom gestures.
Whenever the distance between both tracked sequences changes, the
GtkGestureZoom::scale-changed signal is emitted to report
the scale factor.
Instance methods
Methods inherited from GtkGesture (17)
gtk_gesture_get_bounding_box
If there are touch sequences being currently handled by gesture,
returns TRUE and fills in rect with the bounding box containing
all active touches.
gtk_gesture_get_bounding_box_center
If there are touch sequences being currently handled by gesture,
returns TRUE and fills in x and y with the center of the bounding
box containing all active touches.
gtk_gesture_get_device
Returns the logical GdkDevice that is currently operating
on gesture.
gtk_gesture_get_group
Returns all gestures in the group of gesture.
gtk_gesture_get_last_event
Returns the last event that was processed for sequence.
gtk_gesture_get_last_updated_sequence
Returns the GdkEventSequence that was last updated on gesture.
gtk_gesture_get_point
If sequence is currently being interpreted by gesture,
returns TRUE and fills in x and y with the last coordinates
stored for that event sequence.
gtk_gesture_get_sequence_state
Returns the sequence state, as seen by gesture.
gtk_gesture_get_sequences
Returns the list of GdkEventSequences currently being interpreted
by gesture.
gtk_gesture_group
Adds gesture to the same group than group_gesture.
gtk_gesture_handles_sequence
Returns TRUE if gesture is currently handling events
corresponding to sequence.
gtk_gesture_is_active
Returns TRUE if the gesture is currently active.
gtk_gesture_is_grouped_with
Returns TRUE if both gestures pertain to the same group.
gtk_gesture_is_recognized
Returns TRUE if the gesture is currently recognized.
gtk_gesture_set_sequence_state
Sets the state of sequence in gesture.
deprecated: 4.10.
gtk_gesture_set_state
Sets the state of all sequences that gesture is currently
interacting with.
gtk_gesture_ungroup
Separates gesture into an isolated group.
Methods inherited from GtkEventController (13)
gtk_event_controller_get_current_event
Returns the event that is currently being handled by the controller.
gtk_event_controller_get_current_event_device
Returns the device of the event that is currently being handled by the controller.
gtk_event_controller_get_current_event_state
Returns the modifier state of the event that is currently being handled by the controller.
gtk_event_controller_get_current_event_time
Returns the timestamp of the event that is currently being handled by the controller.
gtk_event_controller_get_name
Gets the name of controller.
gtk_event_controller_get_propagation_limit
Gets the propagation limit of the event controller.
gtk_event_controller_get_propagation_phase
Gets the propagation phase at which controller handles events.
gtk_event_controller_get_widget
Returns the GtkWidget this controller relates to.
gtk_event_controller_reset
Resets the controller to a clean state.
gtk_event_controller_set_name
Sets a name on the controller that can be used for debugging.
gtk_event_controller_set_propagation_limit
Sets the event propagation limit on the event controller.
gtk_event_controller_set_propagation_phase
Sets the propagation phase at which a controller handles events.
gtk_event_controller_set_static_name
Sets a name on the controller that can be used for debugging.
since: 4.8
Properties
Properties inherited from GtkGesture (1)
Properties inherited from GtkEventController (4)
Gtk.EventController:name
The name for this controller, typically used for debugging purposes.
Gtk.EventController:propagation-limit
The limit for which events this controller will handle.
Gtk.EventController:propagation-phase
The propagation phase at which this controller will handle events.
Gtk.EventController:widget
The widget receiving the GdkEvents that the controller will handle.
Signals
Gtk.GestureZoom::scale-changed
Emitted whenever the distance between both tracked sequences changes.
Signals inherited from GtkGesture (5)
GtkGesture::begin
Emitted when the gesture is recognized.
GtkGesture::cancel
Emitted whenever a sequence is cancelled.
GtkGesture::end
Emitted when gesture either stopped recognizing the event
sequences as something to be handled, or the number of touch
sequences became higher or lower than GtkGesture:n-points.
GtkGesture::sequence-state-changed
Emitted whenever a sequence state changes.
GtkGesture::update
Emitted whenever an event is handled while the gesture is recognized.
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.