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// 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 "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "cc/base/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(LayerImpl* layer_root, LayerTreeImpl* tree_impl);
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_
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