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actor: Correct get_paint_volume for an actor with no children and no clip

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We do not need to repaint the entire stage if an actor has no children
and no clip.
This commit is contained in:
Jasper St. Pierre 2012-02-14 15:43:38 -05:00
parent 114250e329
commit 84632d9c1d
1 changed files with 19 additions and 4 deletions
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23
clutter/clutter-actor.c
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@ -4687,13 +4687,28 @@ clutter_actor_real_get_paint_volume (ClutterActor *self,
{
ClutterActorPrivate *priv = self->priv;
ClutterActor *child;
ClutterActorClass *klass;
gboolean res;
/* this is the default return value: we cannot know if a class
* is going to paint outside its allocation, so we take the
* conservative approach.
klass = CLUTTER_ACTOR_GET_CLASS (self);
/* XXX - this thoroughly sucks, but we don't want to penalize users
* who use ClutterActor as a "new ClutterGroup" by forcing a full-stage
* redraw. This should go away in 2.0.
*/
res = FALSE;
if (klass->paint == clutter_actor_real_paint &&
klass->get_paint_volume == clutter_actor_real_get_paint_volume)
{
res = TRUE;
}
else
{
/* this is the default return value: we cannot know if a class
* is going to paint outside its allocation, so we take the
* conservative approach.
*/
res = FALSE;
}
/* we start from the allocation */
clutter_paint_volume_set_width (volume,