Class
GtkGestureSwipe
Description [src]
final class Gtk.GestureSwipe : Gtk.GestureSingle {
/* No available fields */
}GtkGestureSwipe is a GtkGesture implementation able to recognize
swipes, after a press/move/…/move/release sequence happens, the
GtkGestureSwipe::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,
gtk_gesture_swipe_get_velocity() can be called on eg. a
GtkGesture::update handler.
All velocities are reported in pixels/sec units.
Constructors
gtk_gesture_swipe_new
Returns a newly created GtkGesture that recognizes swipes.
Available since: 3.14
Instance methods
gtk_gesture_swipe_get_velocity
If the gesture is recognized, this function returns TRUE and fill in
velocity_x and velocity_y with the recorded velocity, as per the
last event(s) processed.
Available since: 3.14
Methods inherited from GtkGestureSingle (8)
gtk_gesture_single_get_button
Returns the button number gesture listens for, or 0 if gesture
reacts to any button press.
Available since: 3.14
gtk_gesture_single_get_current_button
Returns the button number currently interacting with gesture, or 0 if there
is none.
Available since: 3.14
gtk_gesture_single_get_current_sequence
Returns the event sequence currently interacting with gesture.
This is only meaningful if gtk_gesture_is_active() returns TRUE.
Available since: 3.14
gtk_gesture_single_get_exclusive
Gets whether a gesture is exclusive. For more information, see
gtk_gesture_single_set_exclusive().
Available since: 3.14
gtk_gesture_single_get_touch_only
Returns TRUE if the gesture is only triggered by touch events.
Available since: 3.14
gtk_gesture_single_set_button
Sets the button number gesture listens to. If non-0, every
button press from a different button number will be ignored.
Touch events implicitly match with button 1.
Available since: 3.14
gtk_gesture_single_set_exclusive
Sets whether gesture is exclusive. An exclusive gesture will
only handle pointer and “pointer emulated” touch events, so at
any given time, there is only one sequence able to interact with those.
Available since: 3.14
gtk_gesture_single_set_touch_only
If touch_only is TRUE, gesture will only handle events of type
GDK_TOUCH_BEGIN, #GDK_TOUCH_UPDATE or #GDK_TOUCH_END. If FALSE,
mouse events will be handled too.
Available since: 3.14
Methods inherited from GtkGesture (19)
gtk_gesture_get_bounding_box
If there are touch sequences being currently handled by gesture,
this function returns TRUE and fills in rect with the bounding
box containing all active touches. Otherwise, FALSE will be returned.
Available since: 3.14
gtk_gesture_get_bounding_box_center
If there are touch sequences being currently handled by gesture,
this function returns TRUE and fills in x and y with the center
of the bounding box containing all active touches. Otherwise, FALSE
will be returned.
Available since: 3.14
gtk_gesture_get_device
Returns the master GdkDevice that is currently operating
on gesture, or NULL if the gesture is not being interacted.
Available since: 3.14
gtk_gesture_get_group
Returns all gestures in the group of gesture.
Available since: 3.14
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.
Available since: 3.14
gtk_gesture_get_point
If sequence is currently being interpreted by gesture, this
function returns TRUE and fills in x and y with the last coordinates
stored for that event sequence. The coordinates are always relative to the
widget allocation.
Available since: 3.14
gtk_gesture_get_sequence_state
Returns the sequence state, as seen by gesture.
Available since: 3.14
gtk_gesture_get_sequences
Returns the list of GdkEventSequences currently being interpreted
by gesture.
Available since: 3.14
gtk_gesture_get_window
Returns the user-defined window that receives the events
handled by gesture. See gtk_gesture_set_window() for more information.
Available since: 3.14
gtk_gesture_group
Adds gesture to the same group than group_gesture. Gestures
are by default isolated in their own groups.
Available since: 3.14
gtk_gesture_handles_sequence
Returns TRUE if gesture is currently handling events corresponding to
sequence.
Available since: 3.14
gtk_gesture_is_active
Returns TRUE if the gesture is currently active.
A gesture is active meanwhile there are touch sequences
interacting with it.
Available since: 3.14
gtk_gesture_is_grouped_with
Returns TRUE if both gestures pertain to the same group.
Available since: 3.14
gtk_gesture_is_recognized
Returns TRUE if the gesture is currently recognized.
A gesture is recognized if there are as many interacting
touch sequences as required by gesture, and GtkGesture::check
returned TRUE for the sequences being currently interpreted.
Available since: 3.14
gtk_gesture_set_sequence_state
Sets the state of sequence in gesture. Sequences start
in state #GTK_EVENT_SEQUENCE_NONE, and whenever they change
state, they can never go back to that state. Likewise,
sequences in state #GTK_EVENT_SEQUENCE_DENIED cannot turn
back to a not denied state. With these rules, the lifetime
of an event sequence is constrained to the next four:
Available since: 3.14
gtk_gesture_set_state
Sets the state of all sequences that gesture is currently
interacting with. See gtk_gesture_set_sequence_state()
for more details on sequence states.
Available since: 3.14
gtk_gesture_set_window
Sets a specific window to receive events about, so gesture
will effectively handle only events targeting window, or
a child of it. window must pertain to gtk_event_controller_get_widget().
Available since: 3.14
gtk_gesture_ungroup
Separates gesture into an isolated group.
Available since: 3.14
Methods inherited from GtkEventController (5)
gtk_event_controller_get_propagation_phase
Gets the propagation phase at which controller handles events.
Available since: 3.14
gtk_event_controller_get_widget
Returns the GtkWidget this controller relates to.
Available since: 3.14
gtk_event_controller_handle_event
Feeds an events into controller, so it can be interpreted
and the controller actions triggered.
Available since: 3.14
gtk_event_controller_reset
Resets the controller to a clean state. Every interaction
the controller did through GtkEventController::handle-event
will be dropped at this point.
Available since: 3.14
gtk_event_controller_set_propagation_phase
Sets the propagation phase at which a controller handles events.
Available since: 3.14
Methods inherited from GObject (42)
Properties
Properties inherited from GtkGestureSingle (3)
Gtk.GestureSingle:button
Mouse button number to listen to, or 0 to listen for any button.
Available since: 3.14
Gtk.GestureSingle:exclusive
Whether the gesture is exclusive. Exclusive gestures only listen to pointer and pointer emulated events.
Available since: 3.14
Gtk.GestureSingle:touch-only
Whether the gesture handles only touch events.
Available since: 3.14
Properties inherited from GtkGesture (2)
Gtk.Gesture:n-points
The number of touch points that trigger recognition on this gesture,
Available since: 3.14
Gtk.Gesture:window
If non-NULL, the gesture will only listen for events that happen on
this GdkWindow, or a child of it.
Available since: 3.14
Properties inherited from GtkEventController (2)
Gtk.EventController:propagation-phase
The propagation phase at which this controller will handle events.
Available since: 3.14
Gtk.EventController:widget
The widget receiving the GdkEvents that the controller will handle.
Available since: 3.14
Signals
Gtk.GestureSwipe::swipe
This signal is emitted when the recognized gesture is finished, velocity and direction are a product of previously recorded events.
Available since: 3.14
Signals inherited from GtkGesture (5)
Gtk.Gesture::begin
This signal is emitted when the gesture is recognized. This means the
number of touch sequences matches GtkGesture:n-points, and the GtkGesture::check
handler(s) returned TRUE.
Available since: 3.14
Gtk.Gesture::cancel
This signal is emitted whenever a sequence is cancelled. This usually
happens on active touches when gtk_event_controller_reset() is called
on gesture (manually, due to grabs…), or the individual sequence
was claimed by parent widgets’ controllers (see gtk_gesture_set_sequence_state()).
Available since: 3.14
Gtk.Gesture::end
This signal is emitted when gesture either stopped recognizing the event
sequences as something to be handled (the GtkGesture::check handler returned
FALSE), or the number of touch sequences became higher or lower than
GtkGesture:n-points.
Available since: 3.14
Gtk.Gesture::sequence-state-changed
This signal is emitted whenever a sequence state changes. See
gtk_gesture_set_sequence_state() to know more about the expectable
sequence lifetimes.
Available since: 3.14
Gtk.Gesture::update
This signal is emitted whenever an event is handled while the gesture is
recognized. sequence is guaranteed to pertain to the set of active touches.
Available since: 3.14