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shell-generic-container: Exclude skip_paint actors from the paint volume

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We are not painting them so there is no reason to redraw a bigger
area because of them.
This commit is contained in:
Adel Gadllah 2013-03-01 18:43:34 +01:00
parent cca008b73c
commit 37595ff3e7
1 changed files with 55 additions and 0 deletions
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55
src/shell-generic-container.c
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@ -236,6 +236,60 @@ shell_generic_container_set_skip_paint (ShellGenericContainer *self,
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
}
static gboolean
shell_generic_container_get_paint_volume (ClutterActor *self,
ClutterPaintVolume *volume)
{
ClutterActorBox paint_box, alloc_box;
StThemeNode *theme_node;
ClutterVertex origin;
/* Setting the paint volume does not make sense when we don't have any allocation */
if (!clutter_actor_has_allocation (self))
return FALSE;
theme_node = st_widget_get_theme_node (ST_WIDGET (self));
clutter_actor_get_allocation_box (self, &alloc_box);
st_theme_node_get_paint_box (theme_node, &alloc_box, &paint_box);
origin.x = paint_box.x1 - alloc_box.x1;
origin.y = paint_box.y1 - alloc_box.y1;
origin.z = 0.0f;
clutter_paint_volume_set_origin (volume, &origin);
clutter_paint_volume_set_width (volume, paint_box.x2 - paint_box.x1);
clutter_paint_volume_set_height (volume, paint_box.y2 - paint_box.y1);
if (!clutter_actor_get_clip_to_allocation (self))
{
ClutterActor *child;
/* Based on ClutterGroup/ClutterBox; include the children's
* paint volumes, since they may paint outside our allocation.
*/
for (child = clutter_actor_get_first_child (self);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
const ClutterPaintVolume *child_volume;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
if (shell_generic_container_get_skip_paint (SHELL_GENERIC_CONTAINER (self), child))
continue;
child_volume = clutter_actor_get_transformed_paint_volume (child, self);
if (!child_volume)
return FALSE;
clutter_paint_volume_union (volume, child_volume);
}
}
return TRUE;
}
static void
shell_generic_container_finalize (GObject *object)
{
@ -260,6 +314,7 @@ shell_generic_container_class_init (ShellGenericContainerClass *klass)
actor_class->allocate = shell_generic_container_allocate;
actor_class->paint = shell_generic_container_paint;
actor_class->pick = shell_generic_container_pick;
actor_class->get_paint_volume = shell_generic_container_get_paint_volume;
widget_class->get_focus_chain = shell_generic_container_get_focus_chain;