class: GesturePanPanCallback

[212:7] extends: object

Generated low-level callback wrapper for GIR callback pan.

Members

• callbackObj
• userFn
• userData
• hasUserData

Methods

• GesturePanPanCallback (callback Fn, UserData = null)

  Creates one native callback wrapper. The wrapper owns a trampoline that converts native pointers into generated wrapper objects before invoking Fn.

  • @p Fn is the Aussom callback implementation.
  • @p UserData is retained and passed through to Fn on each invocation when provided.

• trampoline (nativeSelf, direction, offset, nativeUserData)

  Internal trampoline. Converts native pointer arguments into generated wrapper instances, then invokes the user's callback.

• callback ()

  Returns the wrapped NativeCallback.

• handle ()

  Returns the callback as a NativeHandle.

• close ()

  Closes the underlying NativeCallback.

• isClosed ()

  Returns true when the callback has been closed.

class: GesturePanMeta

[283:14] static extends: object

Generated metadata helpers for GesturePan class surfaces.

Methods

• properties ()

  Returns property metadata for GesturePan.

  • @r A list.

• signals ()

  Returns signal metadata for GesturePan.

  • @r A list.

class: GesturePan

[21:7] extends: object

Recognizes pan gestures. These 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 [method@Gtk.GesturePan.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 [signal@Gtk.GesturePan::pan] signal will be emitted as input events are received, containing the offset in the given axis.

Members

• handleObj
• lib
• retainedCallbacks
• signalHandlerNames
• signalSetterHandlers

Methods

• GesturePan (orientation = null)

  Returns a newly created GtkGesture that recognizes pan gestures.

  • @p orientation is expected orientation.

• toNativeHandle (Source)

  Normalizes a constructor argument into a raw pointer carrier. Accepts a raw NativeHandle, a raw NativeBuffer returned from fn.call(...), another generated wrapper exposing handle(), or null. Returns null when the argument carries no pointer.

  • @p Source is the raw handle, raw buffer, wrapper, or null.
  • @r A raw pointer carrier or null when no pointer is present.

• getLib ()

  Returns the opened native library for this generated wrapper.

  • @r The opened native library.

• handle ()

  Returns the wrapped NativeHandle.

  • @r The wrapped NativeHandle.

• isNull ()

  Returns true when the wrapped handle is null.

  • @r A bool.

• describe ()

  Returns a small string for debugging generated wrappers.

  • @r A string.

• asGestureDrag ()

  Wraps this handle as GestureDrag.

  • @r A GestureDrag object.

• connectSignal (string Name, CallbackObj)

  Connects one generated callback wrapper to a named signal.

  • @p Name is the signal name.
  • @p CallbackObj is the generated callback wrapper to connect.
  • @r The connected handler id.

• disconnectSignalHandler (int HandlerId)

  Disconnects one retained signal handler id.

  • @p HandlerId is the signal handler id to disconnect.
  • @r None.

• setOnPan (callback Fn, UserData = null)

  Emitted once a panning gesture along the expected axis is detected.

  • @p Fn is the Aussom callback.
  • @p Fn is called with (GesturePan Self, string Direction, double Offset).
  • @p UserData is retained and passed through to the generated callback wrapper when provided.
  • @r The connected handler id.

• getProperty (string Name)

  Reads one generated property by name.

• setProperty (string Name, Value)

  Writes one generated property by name.

• setOrientation (string Value)

  The expected orientation of pan gestures.

  • @p Value is the new property value.
  • @r None.

• get_orientation ()

  Returns the orientation of the pan gestures that this @gesture expects.

• set_orientation (string orientation)

  Sets the orientation to be expected on pan gestures.

  • @p orientation is expected orientation.
  • @r None.