class: WidgetPaintable

[25:7] extends: object

A GdkPaintable that displays the contents of a widget. GtkWidgetPaintable will also take care of the widget not being in a state where it can be drawn (like when it isn't shown) and just draw nothing or where it does not have a size (like when it is hidden) and report no size in that case. Of course, GtkWidgetPaintable allows you to monitor widgets for size changes by emitting the [signal@Gdk.Paintable::invalidate-size] signal whenever the size of the widget changes as well as for visual changes by emitting the [signal@Gdk.Paintable::invalidate-contents] signal whenever the widget changes. You can use a GtkWidgetPaintable everywhere a GdkPaintable is allowed, including using it on a GtkPicture (or one of its parents) that it was set on itself via gtk_picture_set_paintable(). The paintable will take care of recursion when this happens. If you do this however, ensure that the [property@Gtk.Picture:can-shrink] property is set to %TRUE or you might end up with an infinitely growing widget.

Members

• handleObj
• lib
• retainedCallbacks
• signalHandlerNames
• signalSetterHandlers

Methods

• WidgetPaintable (widget = null)

  Creates a new widget paintable observing the given widget.

  • @p widget is a GtkWidget.

• 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.

• asObject ()

  Wraps this handle as Object.

  • @r A Object object.

• asPaintable ()

  Wraps this handle as Paintable.

  • @r A Paintable object.

• getProperty (string Name)

  Reads one generated property by name.

• setProperty (string Name, Value)

  Writes one generated property by name.

• setWidget (object Value)

  The observed widget or %NULL if none.

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

• get_widget ()

  Returns the widget that is observed or %NULL if none.

• set_widget (object widget)

  Sets the widget that should be observed.

  • @p widget is the widget to observe.
  • @r None.

class: WidgetPaintableMeta

[175:14] static extends: object

Generated metadata helpers for WidgetPaintable class surfaces.

Methods

• properties ()

  Returns property metadata for WidgetPaintable.

  • @r A list.