cc/layers/heads_up_display_layer.h

   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       const gfx::Size& device_viewport, float device_scale_factor);
  22
  23   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
  24
  25  protected:
  26   HeadsUpDisplayLayer();
  27   bool HasDrawableContent() const override;
  28
  29  private:
  30   ~HeadsUpDisplayLayer() override;
  31
  32   DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayer);
  33 };
  34
  35 }  // namespace cc
  36
  37 #endif  // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_H_