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.

Hierarchy

hierarchy this GtkWidgetPaintable implements_0 GdkPaintable this--implements_0 ancestor_0 GObject ancestor_0--this

Ancestors

Implements

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 GObject (42)
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.

Class structure

struct GtkWidgetPaintableClass {
  GObjectClass parent_class;
  
}
Class members
parent_class
GObjectClass
  No description available.