GestureZoom

GtkGestureZoom is a GtkGesture for 2-finger pinch/zoom gestures.

Whenever the distance between both tracked sequences changes, the [signal@Gtk.GestureZoom::scale-changed] signal is emitted to report the scale factor.

class GestureZoom : Gesture {

protected

GtkGestureZoom* gtkGestureZoom;

GtkGestureZoom* getGestureZoomStruct(bool transferOwnership);

void* getStruct();

this(GtkGestureZoom* gtkGestureZoom, bool ownedRef);

static GType getType();

this();

double getScaleDelta();

gulong addOnScaleChanged(void delegate(double, GestureZoom) dlg, ConnectFlags connectFlags);

}

Constructors

this this(GtkGestureZoom* gtkGestureZoom, bool ownedRef): Sets our main struct and passes it to the parent class.
this this(): Returns a newly created GtkGesture that recognizes pinch/zoom gestures.

Members

Functions

addOnScaleChanged gulong addOnScaleChanged(void delegate(double, GestureZoom) dlg, ConnectFlags connectFlags): Emitted whenever the distance between both tracked sequences changes.
getGestureZoomStruct GtkGestureZoom* getGestureZoomStruct(bool transferOwnership): Get the main Gtk struct
getScaleDelta double getScaleDelta(): Gets the scale delta.
getStruct void* getStruct(): the main Gtk struct as a void*

Static functions

getType GType getType()

Variables

gtkGestureZoom GtkGestureZoom* gtkGestureZoom;: the main Gtk struct

Inherited Members

From Gesture

gtkGesture GtkGesture* gtkGesture;: the main Gtk struct
getGestureStruct GtkGesture* getGestureStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
getBoundingBox bool getBoundingBox(GdkRectangle rect): If there are touch sequences being currently handled by @gesture, returns %TRUE and fills in @rect with the bounding box containing all active touches.
getBoundingBoxCenter bool getBoundingBoxCenter(double x, double y): 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.
getDevice Device getDevice(): Returns the logical GdkDevice that is currently operating on @gesture.
getGroup ListG getGroup(): Returns all gestures in the group of @gesture
getLastEvent Event getLastEvent(GdkEventSequence* sequence): Returns the last event that was processed for @sequence.
getLastUpdatedSequence GdkEventSequence* getLastUpdatedSequence(): Returns the GdkEventSequence that was last updated on @gesture.
getPoint bool getPoint(GdkEventSequence* sequence, double x, double y): 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.
getSequenceState GtkEventSequenceState getSequenceState(GdkEventSequence* sequence): Returns the @sequence state, as seen by @gesture.
getSequences ListG getSequences(): Returns the list of GdkEventSequences currently being interpreted by @gesture.
group void group(Gesture gesture): Adds @gesture to the same group than @group_gesture.
handlesSequence bool handlesSequence(GdkEventSequence* sequence): Returns %TRUE if @gesture is currently handling events corresponding to @sequence.
isActive bool isActive(): Returns %TRUE if the gesture is currently active.
isGroupedWith bool isGroupedWith(Gesture other): Returns %TRUE if both gestures pertain to the same group.
isRecognized bool isRecognized(): Returns %TRUE if the gesture is currently recognized.
setSequenceState bool setSequenceState(GdkEventSequence* sequence, GtkEventSequenceState state): Sets the state of @sequence in @gesture.
setState bool setState(GtkEventSequenceState state): Sets the state of all sequences that @gesture is currently interacting with.
ungroup void ungroup(): Separates @gesture into an isolated group.
addOnBegin gulong addOnBegin(void delegate(GdkEventSequence*, Gesture) dlg, ConnectFlags connectFlags): Emitted when the gesture is recognized.
addOnBegin gulong addOnBegin(void delegate(Event, Gesture) dlg, ConnectFlags connectFlags): Emitted when the gesture is recognized.
addOnCancel gulong addOnCancel(void delegate(GdkEventSequence*, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever a sequence is cancelled.
addOnCancel gulong addOnCancel(void delegate(Event, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever a sequence is cancelled.
addOnEnd gulong addOnEnd(void delegate(GdkEventSequence*, Gesture) dlg, ConnectFlags connectFlags): 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 [property@Gtk.Gesture:n-points].
addOnEnd gulong addOnEnd(void delegate(Event, Gesture) dlg, ConnectFlags connectFlags): 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 [property@Gtk.Gesture:n-points].
addOnSequenceStateChanged gulong addOnSequenceStateChanged(void delegate(GdkEventSequence*, GtkEventSequenceState, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever a sequence state changes.
addOnSequenceStateChanged gulong addOnSequenceStateChanged(void delegate(Event, GtkEventSequenceState, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever a sequence state changes.
addOnUpdate gulong addOnUpdate(void delegate(GdkEventSequence*, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever an event is handled while the gesture is recognized.
addOnUpdate gulong addOnUpdate(void delegate(Event, Gesture) dlg, ConnectFlags connectFlags): Emitted whenever an event is handled while the gesture is recognized.