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clone: Implement get_paint_volume virtual

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To allow Clutter to queue clipped redraws when a clone actor changes we
need to be able to report a paint volume for clone actors. This patch
makes ClutterClones query the paint volume of their source actor and
masquerade it as their own volume.
This commit is contained in:
Robert Bragg 2010-09-11 02:39:23 +01:00
parent f6ba69f82d
commit 1a8d577168
1 changed files with 19 additions and 0 deletions
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19
clutter/clutter-clone.c
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@ -188,6 +188,24 @@ clutter_clone_paint (ClutterActor *self)
_clutter_actor_set_opacity_parent (priv->clone_source, NULL);
}
gboolean
clutter_clone_get_paint_volume (ClutterActor *self,
ClutterPaintVolume *volume)
{
ClutterClonePrivate *priv = CLUTTER_CLONE (self)->priv;
const ClutterPaintVolume *source_volume;
/* query the volume of the source actor and simply masquarade it as
* the clones volume... */
source_volume = clutter_actor_get_paint_volume (priv->clone_source);
if (!source_volume)
return FALSE;
_clutter_paint_volume_set_from_volume (volume, source_volume);
_clutter_paint_volume_set_reference_actor (volume, self);
return TRUE;
}
static void
clutter_clone_allocate (ClutterActor *self,
const ClutterActorBox *box,
@ -273,6 +291,7 @@ clutter_clone_class_init (ClutterCloneClass *klass)
actor_class->apply_transform = clutter_clone_apply_transform;
actor_class->paint = clutter_clone_paint;
actor_class->get_paint_volume = clutter_clone_get_paint_volume;
actor_class->get_preferred_width = clutter_clone_get_preferred_width;
actor_class->get_preferred_height = clutter_clone_get_preferred_height;
actor_class->allocate = clutter_clone_allocate;