cc/picture_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_PICTURE_LAYER_H_
   6 #define CC_PICTURE_LAYER_H_
   7
   8 #include "cc/contents_scaling_layer.h"
   9 #include "cc/layer.h"
  10 #include "cc/picture_pile.h"
  11 #include "cc/occlusion_tracker.h"
  12
  13 namespace cc {
  14
  15 class ContentLayerClient;
  16 class ResourceUpdateQueue;
  17 struct RenderingStats;
  18
  19 class CC_EXPORT PictureLayer : public ContentsScalingLayer {
  20 public:
  21   static scoped_refptr<PictureLayer> create(ContentLayerClient*);
  22
  23   void clearClient() { client_ = 0; }
  24
  25   // Implement Layer interface
  26   virtual bool drawsContent() const OVERRIDE;
  27   virtual scoped_ptr<LayerImpl> createLayerImpl(
  28       LayerTreeImpl* treeImpl) OVERRIDE;
  29   virtual void pushPropertiesTo(LayerImpl*) OVERRIDE;
  30   virtual void setNeedsDisplayRect(const gfx::RectF& layerRect) OVERRIDE;
  31   virtual void update(ResourceUpdateQueue&, const OcclusionTracker*,
  32                       RenderingStats&) OVERRIDE;
  33
  34 protected:
  35   explicit PictureLayer(ContentLayerClient*);
  36   virtual ~PictureLayer();
  37
  38 private:
  39   ContentLayerClient* client_;
  40   PicturePile pile_;
  41   // Invalidation to use the next time update is called.
  42   Region pending_invalidation_;
  43   // Invalidation from the last time update was called.
  44   Region pile_invalidation_;
  45 };
  46
  47 }  // namespace cc
  48
  49 #endif  // CC_PICTURE_LAYER_H_