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clutter: Avoid relayouts when raising/lowering children

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These calls don't actually affect the layout, but the paint order.
It seems safe to skip the full relayout/repaint of the parent actor,
and redraw only the area occupied by the affected child.
This commit is contained in:
Carlos Garnacho 2018-08-10 21:30:58 +02:00 committed by Georges Basile Stavracas Neto
parent 9a843857b3
commit bf4ccd21c1
1 changed files with 18 additions and 2 deletions
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20
clutter/clutter/clutter-actor.c
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@ -1722,6 +1722,22 @@ set_show_on_set_parent (ClutterActor *self,
}
}
static void
clutter_actor_queue_redraw_on_parent (ClutterActor *self)
{
const ClutterPaintVolume *pv;
if (!self->priv->parent)
return;
/* A relayout/redraw is underway */
if (self->priv->needs_allocation)
return;
pv = clutter_actor_get_transformed_paint_volume (self, self->priv->parent);
_clutter_actor_queue_redraw_with_clip (self->priv->parent, 0, pv);
}
/**
* clutter_actor_show:
* @self: A #ClutterActor
@ -13655,7 +13671,7 @@ clutter_actor_set_child_above_sibling (ClutterActor *self,
sibling);
g_object_unref(child);
clutter_actor_queue_relayout (self);
clutter_actor_queue_redraw_on_parent (child);
}
/**
@ -13702,7 +13718,7 @@ clutter_actor_set_child_below_sibling (ClutterActor *self,
sibling);
g_object_unref(child);
clutter_actor_queue_relayout (self);
clutter_actor_queue_redraw_on_parent (child);
}
/**