| // Copyright 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_TREES_TREE_SYNCHRONIZER_H_ |
| #define CC_TREES_TREE_SYNCHRONIZER_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "cc/cc_export.h" |
| |
| namespace cc { |
| |
| class LayerImpl; |
| class LayerTreeHost; |
| class LayerTreeImpl; |
| class Layer; |
| |
| class CC_EXPORT TreeSynchronizer { |
| public: |
| // Accepts a Layer tree and returns a reference to a LayerImpl tree that |
| // duplicates the structure of the Layer tree, reusing the LayerImpls in the |
| // tree provided by old_layer_impl_root if possible. |
| static void SynchronizeTrees(Layer* layer_root, LayerTreeImpl* tree_impl); |
| static void SynchronizeTrees(LayerTreeImpl* pending_tree, |
| LayerTreeImpl* active_tree); |
| |
| static void PushLayerProperties(LayerTreeImpl* pending_tree, |
| LayerTreeImpl* active_tree); |
| static void PushLayerProperties(LayerTreeHost* host_tree, |
| LayerTreeImpl* impl_tree); |
| |
| private: |
| TreeSynchronizer(); // Not instantiable. |
| |
| DISALLOW_COPY_AND_ASSIGN(TreeSynchronizer); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_TREES_TREE_SYNCHRONIZER_H_ |