void graphicsLayerActorSetSublayers(GraphicsLayerActor* layer, GraphicsLayerActorList& subLayers)
{
if (!subLayers.size()) {
graphicsLayerActorRemoveAll(layer);
return;
}
ClutterActor* newParentActor = CLUTTER_ACTOR(layer);
for (size_t i = 0; i < subLayers.size(); ++i) {
ClutterActor* childActor = CLUTTER_ACTOR(subLayers[i].get());
ClutterActor* oldParentActor = clutter_actor_get_parent(childActor);
if (oldParentActor) {
if (oldParentActor == newParentActor)
continue;
clutter_actor_remove_child(oldParentActor, childActor);
}
clutter_actor_add_child(newParentActor, childActor);
}
}
// Each GraphicsLayer has the corresponding layer in the platform port.
// So whenever the list of child layer changes, the list of GraphicsLayerActor should be updated accordingly.
void GraphicsLayerClutter::updateSublayerList()
{
GraphicsLayerActorList newSublayers;
const Vector<GraphicsLayer*>& childLayers = children();
if (childLayers.size() > 0) {
size_t numChildren = childLayers.size();
for (size_t i = 0; i < numChildren; ++i) {
GraphicsLayerClutter* curChild = static_cast<GraphicsLayerClutter*>(childLayers[i]);
GraphicsLayerActor* childLayer = curChild->layerForSuperlayer();
g_assert(GRAPHICS_LAYER_IS_ACTOR(childLayer));
newSublayers.append(childLayer);
}
for (size_t i = 0; i < newSublayers.size(); i++) {
ClutterActor* layerActor = CLUTTER_ACTOR(newSublayers[i].get());
ClutterActor* parentActor = clutter_actor_get_parent(layerActor);
if (parentActor)
clutter_container_remove_actor(CLUTTER_CONTAINER(parentActor), layerActor);
}
}
graphicsLayerActorSetSublayers(m_layer.get(), newSublayers);
}