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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 "base/memory/scoped_ptr.h"
      9 #include "cc/base/cc_export.h"
     10 #include "cc/layers/contents_scaling_layer.h"
     11 
     12 namespace cc {
     13 
     14 class CC_EXPORT HeadsUpDisplayLayer : public ContentsScalingLayer {
     15  public:
     16   static scoped_refptr<HeadsUpDisplayLayer> Create();
     17 
     18   void PrepareForCalculateDrawProperties(
     19       gfx::Size device_viewport, float device_scale_factor);
     20 
     21   virtual bool DrawsContent() const OVERRIDE;
     22 
     23   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
     24       OVERRIDE;
     25 
     26  protected:
     27   HeadsUpDisplayLayer();
     28 
     29  private:
     30   virtual ~HeadsUpDisplayLayer();
     31 
     32   DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayer);
     33 };
     34 
     35 }  // namespace cc
     36 
     37 #endif  // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_H_
     38