| // Copyright 2019 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_LAYERS_MIRROR_LAYER_H_ |
| #define CC_LAYERS_MIRROR_LAYER_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "cc/cc_export.h" |
| #include "cc/layers/layer.h" |
| |
| namespace cc { |
| |
| // A layer that can mirror contents of another Layer. |
| class CC_EXPORT MirrorLayer : public Layer { |
| public: |
| static scoped_refptr<MirrorLayer> Create(scoped_refptr<Layer> mirrored_layer); |
| |
| MirrorLayer(const MirrorLayer&) = delete; |
| MirrorLayer& operator=(const MirrorLayer&) = delete; |
| |
| Layer* mirrored_layer() const { return mirrored_layer_.get(); } |
| |
| // Layer overrides. |
| std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override; |
| void PushPropertiesTo(LayerImpl* layer) override; |
| void SetLayerTreeHost(LayerTreeHost* host) override; |
| |
| protected: |
| explicit MirrorLayer(scoped_refptr<Layer> mirrored_layer); |
| |
| private: |
| ~MirrorLayer() override; |
| |
| // A reference to a layer that is mirrored by this layer. |mirrored_layer_| |
| // cannot be an ancestor of |this|. |
| scoped_refptr<Layer> mirrored_layer_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_LAYERS_MIRROR_LAYER_H_ |