Class
GtkWidgetPaintable
Description [src]
final class Gtk.WidgetPaintable : GObject.Object {
/* No available fields */
}GtkWidgetPaintable is 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 GdkPaintable::invalidate-size signal
whenever the size of the widget changes as well as for visual changes by
emitting the GdkPaintable::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
GtkPicture:can-shrink property is set to TRUE or you might
end up with an infinitely growing widget.
Constructors
gtk_widget_paintable_new
Creates a new widget paintable observing the given widget.
Instance methods
gtk_widget_paintable_get_widget
Returns the widget that is observed or NULL if none.
gtk_widget_paintable_set_widget
Sets the widget that should be observed.
Methods inherited from GdkPaintable (9)
gdk_paintable_compute_concrete_size
Compute a concrete size for the GdkPaintable.
gdk_paintable_get_current_image
Gets an immutable paintable for the current contents displayed by paintable.
gdk_paintable_get_flags
Get flags for the paintable.
gdk_paintable_get_intrinsic_aspect_ratio
Gets the preferred aspect ratio the paintable would like to be displayed at.
gdk_paintable_get_intrinsic_height
Gets the preferred height the paintable would like to be displayed at.
gdk_paintable_get_intrinsic_width
Gets the preferred width the paintable would like to be displayed at.
gdk_paintable_invalidate_contents
Called by implementations of GdkPaintable to invalidate their contents.
gdk_paintable_invalidate_size
Called by implementations of GdkPaintable to invalidate their size.
gdk_paintable_snapshot
Snapshots the given paintable with the given width and height.
Properties
Gtk.WidgetPaintable:widget
The observed widget or NULL if none.
Signals
Signals inherited from GObject (1)
GObject.Object::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Signals inherited from GdkPaintable (2)
Gdk.Paintable::invalidate-contents
Emitted when the contents of the paintable change.
Gdk.Paintable::invalidate-size
Emitted when the intrinsic size of the paintable changes.