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clutter: Avoid relayouts when raising/lowering children
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.
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@ -1722,6 +1722,22 @@ set_show_on_set_parent (ClutterActor *self,
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}
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}
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static void
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clutter_actor_queue_redraw_on_parent (ClutterActor *self)
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{
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const ClutterPaintVolume *pv;
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if (!self->priv->parent)
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return;
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/* A relayout/redraw is underway */
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if (self->priv->needs_allocation)
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return;
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pv = clutter_actor_get_transformed_paint_volume (self, self->priv->parent);
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_clutter_actor_queue_redraw_with_clip (self->priv->parent, 0, pv);
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}
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/**
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* clutter_actor_show:
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* @self: A #ClutterActor
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@ -13655,7 +13671,7 @@ clutter_actor_set_child_above_sibling (ClutterActor *self,
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sibling);
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g_object_unref(child);
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clutter_actor_queue_relayout (self);
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clutter_actor_queue_redraw_on_parent (child);
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}
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/**
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@ -13702,7 +13718,7 @@ clutter_actor_set_child_below_sibling (ClutterActor *self,
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sibling);
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g_object_unref(child);
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clutter_actor_queue_relayout (self);
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clutter_actor_queue_redraw_on_parent (child);
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}
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/**
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