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window-actor: Base the paint volume on our children, not our shape

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This was wrong for subsurfaces that extend beyond the parent's shape,
since the paint volume would be wrong in this case. Instead of using the
shape region which can be out of date and wrong, just use the union of
our children's volumes, which is a lot easier to manage.
This commit is contained in:
Jasper St. Pierre 2014-07-30 17:09:02 +02:00
parent 626e4965b1
commit 6fbd21001b
1 changed files with 16 additions and 17 deletions
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33
src/compositor/meta-window-actor.c
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@ -710,25 +710,16 @@ meta_window_actor_get_paint_volume (ClutterActor *actor,
{
MetaWindowActor *self = META_WINDOW_ACTOR (actor);
MetaWindowActorPrivate *priv = self->priv;
cairo_rectangle_int_t unobscured_bounds, bounds;
gboolean appears_focused = meta_window_appears_focused (priv->window);
ClutterVertex origin;
/* The paint volume is computed before paint functions are called
* so our bounds might not be updated yet. Force an update. */
meta_window_actor_handle_updates (self);
meta_window_actor_get_shape_bounds (self, &bounds);
if (priv->surface)
{
if (meta_surface_actor_get_unobscured_bounds (priv->surface, &unobscured_bounds))
gdk_rectangle_intersect (&bounds, &unobscured_bounds, &bounds);
}
if (appears_focused ? priv->focused_shadow : priv->unfocused_shadow)
{
cairo_rectangle_int_t shadow_bounds;
ClutterActorBox shadow_box;
/* We could compute an full clip region as we do for the window
* texture, but the shadow is relatively cheap to draw, and
@ -738,16 +729,24 @@ meta_window_actor_get_paint_volume (ClutterActor *actor,
*/
meta_window_actor_get_shadow_bounds (self, appears_focused, &shadow_bounds);
gdk_rectangle_union (&bounds, &shadow_bounds, &bounds);
shadow_box.x1 = shadow_bounds.x;
shadow_box.x2 = shadow_bounds.x + shadow_bounds.width;
shadow_box.y1 = shadow_bounds.y;
shadow_box.y2 = shadow_bounds.y + shadow_bounds.height;
clutter_paint_volume_union_box (volume, &shadow_box);
}
origin.x = bounds.x;
origin.y = bounds.y;
origin.z = 0.0f;
clutter_paint_volume_set_origin (volume, &origin);
if (priv->surface)
{
const ClutterPaintVolume *child_volume;
clutter_paint_volume_set_width (volume, bounds.width);
clutter_paint_volume_set_height (volume, bounds.height);
child_volume = clutter_actor_get_transformed_paint_volume (CLUTTER_ACTOR (priv->surface), actor);
if (!child_volume)
return FALSE;
clutter_paint_volume_union (volume, child_volume);
}
return TRUE;
}