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Object Hierarchy
GObject
╰── GtkEventController
╰── GtkGesture
╰── GtkGestureSingle
╰── GtkGestureDrag
╰── GtkGesturePan
Description
GtkGesturePan is a GtkGesture implementation able to recognize
pan gestures, those are drags that are locked to happen along one
axis. The axis that a GtkGesturePan handles is defined at
construct time, and can be changed through
gtk_gesture_pan_set_orientation().
When the gesture starts to be recognized, GtkGesturePan will attempt to determine as early as possible whether the sequence is moving in the expected direction, and denying the sequence if this does not happen.
Once a panning gesture along the expected axis is recognized, the “pan” signal will be emitted as input events are received, containing the offset in the given axis.
Functions
gtk_gesture_pan_new ()
GtkGesture *
gtk_gesture_pan_new (GtkOrientation orientation);
Returns a newly created GtkGesture that recognizes pan gestures.
gtk_gesture_pan_get_orientation ()
GtkOrientation
gtk_gesture_pan_get_orientation (GtkGesturePan *gesture);
Returns the orientation of the pan gestures that this gesture
expects.
gtk_gesture_pan_set_orientation ()
void gtk_gesture_pan_set_orientation (GtkGesturePan *gesture,GtkOrientation orientation);
Sets the orientation to be expected on pan gestures.
Property Details
The “orientation” property
“orientation” GtkOrientation
The expected orientation of pan gestures.
Owner: GtkGesturePan
Flags: Read / Write
Default value: GTK_ORIENTATION_HORIZONTAL
Signal Details
The “pan” signal
void user_function (GtkGesturePan *gesture, GtkPanDirection direction, double offset, gpointer user_data)
This signal is emitted once a panning gesture along the expected axis is detected.
Parameters
gesture |
The object which received the signal |
|
direction |
current direction of the pan gesture |
|
offset |
Offset along the gesture orientation |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last