GestureZoomRef

public struct GestureZoomRef : GestureZoomProtocol, GWeakCapturing

GtkGestureZoom is a GtkGesture implementation able to recognize pinch/zoom gestures, whenever the distance between both tracked sequences changes, the GtkGestureZoom::scale-changed signal is emitted to report the scale factor.

The GestureZoomRef type acts as a lightweight Swift reference to an underlying GtkGestureZoom instance. It exposes methods that can operate on this data type through GestureZoomProtocol conformance. Use GestureZoomRef only as an unowned reference to an existing GtkGestureZoom instance.

  • ptr
    Untyped pointer to the underlying `GtkGestureZoom` instance.
    

    For type-safe access, use the generated, typed pointer gesture_zoom_ptr property instead.

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!

GestureZoom Class

  • Designated initialiser from the underlying C data type

    Declaration

    Swift

    @inlinable
    init(_ p: UnsafeMutablePointer<GtkGestureZoom>)
  • Designated initialiser from a constant pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init(_ p: UnsafePointer<GtkGestureZoom>)
  • Conditional initialiser from an optional pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init!(_ maybePointer: UnsafeMutablePointer<GtkGestureZoom>?)
  • Conditional initialiser from an optional, non-mutable pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init!(_ maybePointer: UnsafePointer<GtkGestureZoom>?)
  • Conditional initialiser from an optional gpointer

    Declaration

    Swift

    @inlinable
    init!(gpointer g: gpointer?)
  • Conditional initialiser from an optional, non-mutable gconstpointer

    Declaration

    Swift

    @inlinable
    init!(gconstpointer g: gconstpointer?)
  • Reference intialiser for a related type that implements GestureZoomProtocol

    Declaration

    Swift

    @inlinable
    init<T>(_ other: T) where T : GestureZoomProtocol
  • This factory is syntactic sugar for setting weak pointers wrapped in GWeak<T>

    Declaration

    Swift

    @inlinable
    static func unowned<T>(_ other: T) -> GestureZoomRef where T : GestureZoomProtocol
  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to GestureZoomProtocol.

    Declaration

    Swift

    @inlinable
    init<T>(cPointer: UnsafeMutablePointer<T>)
  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to GestureZoomProtocol.

    Declaration

    Swift

    @inlinable
    init<T>(constPointer: UnsafePointer<T>)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to GestureZoomProtocol.

    Declaration

    Swift

    @inlinable
    init(mutating raw: UnsafeRawPointer)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to GestureZoomProtocol.

    Declaration

    Swift

    @inlinable
    init(raw: UnsafeMutableRawPointer)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to GestureZoomProtocol.

    Declaration

    Swift

    @inlinable
    init(opaquePointer: OpaquePointer)
  • Returns a newly created `GtkGesture` that recognizes zoom
    

    in/out gestures (usually known as pinch/zoom).

    Declaration

    Swift

    @inlinable
    init<WidgetT>(widget: WidgetT) where WidgetT : WidgetProtocol