gtk4/org.gtkkn.bindings.gtk/GestureZoom

GestureZoom

open class GestureZoom(pointer: <Error class: unknown class><<Error class: unknown class>>) : Gesture

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.

Constructors

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constructor()

Returns a newly created GtkGesture that recognizes pinch/zoom gestures.

constructor(pointer: <Error class: unknown class><<Error class: unknown class>>)

Types

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object Companion

Properties

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val gtkEventControllerPointer: <Error class: unknown class><<Error class: unknown class>>
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val gtkGesturePointer: <Error class: unknown class><<Error class: unknown class>>
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val gtkGestureZoomPointer: <Error class: unknown class><<Error class: unknown class>>
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open var name: String?

The name for this controller, typically used for debugging purposes.

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open var propagationLimit: PropagationLimit

The limit for which events this controller will handle.

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open var propagationPhase: PropagationPhase

The propagation phase at which this controller will handle events.

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open val widget: Widget?

The widget receiving the GdkEvents that the controller will handle.

Functions

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fun connectBegin(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>?) -> Unit): <Error class: unknown class>

Emitted when the gesture is recognized.

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fun connectCancel(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>?) -> Unit): <Error class: unknown class>

Emitted whenever a sequence is cancelled.

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fun connectEnd(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>?) -> Unit): <Error class: unknown class>

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.

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fun connectScaleChanged(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (scale: Double) -> Unit): <Error class: unknown class>

Emitted whenever the distance between both tracked sequences changes.

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fun connectSequenceStateChanged(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>?, state: EventSequenceState) -> Unit): <Error class: unknown class>

Emitted whenever a sequence state changes.

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fun connectUpdate(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>?) -> Unit): <Error class: unknown class>

Emitted whenever an event is handled while the gesture is recognized.

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open fun getBoundingBox(rect: <Error class: unknown class>): Boolean

If there are touch sequences being currently handled by @gesture, returns true and fills in @rect with the bounding box containing all active touches.

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open fun getCurrentEvent(): <Error class: unknown class>?

Returns the event that is currently being handled by the controller.

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open fun getCurrentEventDevice(): <Error class: unknown class>?

Returns the device of the event that is currently being handled by the controller.

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open fun getCurrentEventState(): <Error class: unknown class>

Returns the modifier state of the event that is currently being handled by the controller.

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open fun getCurrentEventTime(): <Error class: unknown class>

Returns the timestamp of the event that is currently being handled by the controller.

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open fun getDevice(): <Error class: unknown class>?

Returns the logical GdkDevice that is currently operating on @gesture.

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open fun getGroup(): <Error class: unknown class>

Returns all gestures in the group of @gesture

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open fun getLastEvent(sequence: <Error class: unknown class>? = null): <Error class: unknown class>?

Returns the last event that was processed for @sequence.

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open fun getLastUpdatedSequence(): <Error class: unknown class>?

Returns the GdkEventSequence that was last updated on @gesture.

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open fun getName(): String?

Gets the name of @controller.

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open fun getPropagationLimit(): PropagationLimit

Gets the propagation limit of the event controller.

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open fun getPropagationPhase(): PropagationPhase

Gets the propagation phase at which @controller handles events.

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open fun getScaleDelta(): Double

Gets the scale delta.

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open fun getSequences(): <Error class: unknown class>

Returns the list of GdkEventSequences currently being interpreted by @gesture.

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open fun getSequenceState(sequence: <Error class: unknown class>): EventSequenceState

Returns the @sequence state, as seen by @gesture.

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open fun getWidget(): Widget?

Returns the GtkWidget this controller relates to.

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open fun group(gesture: Gesture)

Adds @gesture to the same group than @group_gesture.

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open fun handlesSequence(sequence: <Error class: unknown class>? = null): Boolean

Returns true if @gesture is currently handling events corresponding to @sequence.

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open fun isActive(): Boolean

Returns true if the gesture is currently active.

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open fun isGroupedWith(other: Gesture): Boolean

Returns true if both gestures pertain to the same group.

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open fun isRecognized(): Boolean

Returns true if the gesture is currently recognized.

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open fun reset()

Resets the @controller to a clean state.

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open fun setName(name: String? = null)

Sets a name on the controller that can be used for debugging.

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open fun setPropagationLimit(limit: PropagationLimit)

Sets the event propagation limit on the event controller.

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open fun setPropagationPhase(phase: PropagationPhase)

Sets the propagation phase at which a controller handles events.

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open fun setSequenceState(sequence: <Error class: unknown class>, state: EventSequenceState): Boolean

Sets the state of @sequence in @gesture.

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open fun setState(state: EventSequenceState): Boolean

Sets the state of all sequences that @gesture is currently interacting with.

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open fun setStaticName(name: String? = null)

Sets a name on the controller that can be used for debugging.

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open fun ungroup()

Separates @gesture into an isolated group.