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      1 // Copyright 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CC_LAYERS_HEADS_UP_DISPLAY_LAYER_H_
      6 #define CC_LAYERS_HEADS_UP_DISPLAY_LAYER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/memory/scoped_ptr.h"
     11 #include "cc/base/cc_export.h"
     12 #include "cc/layers/contents_scaling_layer.h"
     13 
     14 namespace cc {
     15 
     16 class CC_EXPORT HeadsUpDisplayLayer : public ContentsScalingLayer {
     17  public:
     18   static scoped_refptr<HeadsUpDisplayLayer> Create();
     19 
     20   void PrepareForCalculateDrawProperties(
     21       gfx::Size device_viewport, float device_scale_factor);
     22 
     23   virtual bool DrawsContent() const OVERRIDE;
     24 
     25   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
     26       OVERRIDE;
     27 
     28   virtual std::string DebugName() OVERRIDE;
     29 
     30  protected:
     31   HeadsUpDisplayLayer();
     32 
     33  private:
     34   virtual ~HeadsUpDisplayLayer();
     35 
     36   DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayer);
     37 };
     38 
     39 }  // namespace cc
     40 
     41 #endif  // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_H_
     42