src/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();
  25
  26   // Layer interface.
  27   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
  28   void SetLayerTreeHost(LayerTreeHost* host) override;
  29   void PushPropertiesTo(LayerImpl* layer) override;
  30   void SetNeedsDisplayRect(const gfx::Rect& layer_rect) override;
  31   bool Update(ResourceUpdateQueue* queue,
  32               const OcclusionTracker<Layer>* occlusion) override;
  33   void SetIsMask(bool is_mask) override;
  34   bool SupportsLCDText() const override;
  35   skia::RefPtr<SkPicture> GetPicture() const override;
  36   bool IsSuitableForGpuRasterization() const override;
  37
  38   void RunMicroBenchmark(MicroBenchmark* benchmark) override;
  39
  40   ContentLayerClient* client() { return client_; }
  41
  42   PicturePile* GetPicturePileForTesting() { return &pile_; }
  43
  44  protected:
  45   explicit PictureLayer(ContentLayerClient* client);
  46   ~PictureLayer() override;
  47
  48   bool HasDrawableContent() const override;
  49   void UpdateCanUseLCDText();
  50
  51  private:
  52   ContentLayerClient* client_;
  53   PicturePile pile_;
  54   devtools_instrumentation::
  55       ScopedLayerObjectTracker instrumentation_object_tracker_;
  56   // Invalidation to use the next time update is called.
  57   InvalidationRegion pending_invalidation_;
  58   // Invalidation from the last time update was called.
  59   Region pile_invalidation_;
  60   gfx::Rect last_updated_visible_content_rect_;
  61
  62   int update_source_frame_number_;
  63   bool can_use_lcd_text_last_frame_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(PictureLayer);
  66 };
  67
  68 }  // namespace cc
  69
  70 #endif  // CC_LAYERS_PICTURE_LAYER_H_