cc/layers/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_LAYERS_PICTURE_LAYER_H_
   6 #define CC_LAYERS_PICTURE_LAYER_H_
   7
   8 #include "cc/base/invalidation_region.h"
   9 #include "cc/debug/devtools_instrumentation.h"
  10 #include "cc/layers/layer.h"
  11 #include "cc/resources/picture_pile.h"
  12 #include "cc/trees/occlusion_tracker.h"
  13
  14 namespace cc {
  15
  16 class ContentLayerClient;
  17 class ResourceUpdateQueue;
  18
  19 class CC_EXPORT PictureLayer : public Layer {
  20  public:
  21   static scoped_refptr<PictureLayer> Create(ContentLayerClient* client);
  22
  23   void ClearClient() { client_ = NULL; }
  24
  25   // Layer interface.
  26   virtual bool DrawsContent() const OVERRIDE;
  27   virtual scoped_ptr<LayerImpl> CreateLayerImpl(
  28       LayerTreeImpl* tree_impl) OVERRIDE;
  29   virtual void SetLayerTreeHost(LayerTreeHost* host) OVERRIDE;
  30   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  31   virtual void SetNeedsDisplayRect(const gfx::RectF& layer_rect) OVERRIDE;
  32   virtual bool Update(
  33       ResourceUpdateQueue* queue,
  34       const OcclusionTracker* occlusion) OVERRIDE;
  35   virtual void SetIsMask(bool is_mask) OVERRIDE;
  36   virtual bool SupportsLCDText() const OVERRIDE;
  37   virtual skia::RefPtr<SkPicture> GetPicture() const OVERRIDE;
  38
  39  protected:
  40   explicit PictureLayer(ContentLayerClient* client);
  41   virtual ~PictureLayer();
  42
  43  private:
  44   ContentLayerClient* client_;
  45   scoped_refptr<PicturePile> pile_;
  46   devtools_instrumentation::
  47       ScopedLayerObjectTracker instrumentation_object_tracker_;
  48   // Invalidation to use the next time update is called.
  49   InvalidationRegion pending_invalidation_;
  50   // Invalidation from the last time update was called.
  51   Region pile_invalidation_;
  52   bool is_mask_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(PictureLayer);
  55 };
  56
  57 }  // namespace cc
  58
  59 #endif  // CC_LAYERS_PICTURE_LAYER_H_