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/debug/micro_benchmark_controller.h"
  11 #include "cc/layers/layer.h"
  12 #include "cc/resources/picture_pile.h"
  13 #include "cc/trees/occlusion_tracker.h"
  14
  15 namespace cc {
  16
  17 class ContentLayerClient;
  18 class ResourceUpdateQueue;
  19
  20 class CC_EXPORT PictureLayer : public Layer {
  21  public:
  22   static scoped_refptr<PictureLayer> Create(ContentLayerClient* client);
  23
  24   void ClearClient() { client_ = NULL; }
  25
  26   // Layer interface.
  27   virtual bool DrawsContent() const OVERRIDE;
  28   virtual scoped_ptr<LayerImpl> CreateLayerImpl(
  29       LayerTreeImpl* tree_impl) OVERRIDE;
  30   virtual void SetLayerTreeHost(LayerTreeHost* host) OVERRIDE;
  31   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  32   virtual void SetNeedsDisplayRect(const gfx::RectF& layer_rect) OVERRIDE;
  33   virtual bool Update(ResourceUpdateQueue* queue,
  34                       const OcclusionTracker<Layer>* 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   virtual bool IsSuitableForGpuRasterization() const OVERRIDE;
  39
  40   virtual void RunMicroBenchmark(MicroBenchmark* benchmark) OVERRIDE;
  41
  42   ContentLayerClient* client() { return client_; }
  43
  44   Picture::RecordingMode RecordingMode() const;
  45
  46   PicturePile* GetPicturePileForTesting() const { return pile_.get(); }
  47
  48  protected:
  49   explicit PictureLayer(ContentLayerClient* client);
  50   virtual ~PictureLayer();
  51
  52   void UpdateCanUseLCDText();
  53
  54  private:
  55   ContentLayerClient* client_;
  56   scoped_refptr<PicturePile> pile_;
  57   devtools_instrumentation::
  58       ScopedLayerObjectTracker instrumentation_object_tracker_;
  59   // Invalidation to use the next time update is called.
  60   InvalidationRegion pending_invalidation_;
  61   // Invalidation from the last time update was called.
  62   Region pile_invalidation_;
  63   gfx::Rect last_updated_visible_content_rect_;
  64   bool is_mask_;
  65
  66   int update_source_frame_number_;
  67   bool can_use_lcd_text_last_frame_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(PictureLayer);
  70 };
  71
  72 }  // namespace cc
  73
  74 #endif  // CC_LAYERS_PICTURE_LAYER_H_