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/trees/occlusion_tracker.h"
  13
  14 namespace cc {
  15
  16 class ContentLayerClient;
  17 class RecordingSource;
  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   void SetNearestNeighbor(bool nearest_neighbor);
  27
  28   // Layer interface.
  29   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
  30   void SetLayerTreeHost(LayerTreeHost* host) override;
  31   void PushPropertiesTo(LayerImpl* layer) override;
  32   void SetNeedsDisplayRect(const gfx::Rect& layer_rect) override;
  33   bool Update(ResourceUpdateQueue* queue,
  34               const OcclusionTracker<Layer>* occlusion) override;
  35   void SetIsMask(bool is_mask) override;
  36   bool SupportsLCDText() const override;
  37   skia::RefPtr<SkPicture> GetPicture() const override;
  38   bool IsSuitableForGpuRasterization() const override;
  39
  40   void RunMicroBenchmark(MicroBenchmark* benchmark) override;
  41
  42   ContentLayerClient* client() { return client_; }
  43
  44   RecordingSource* GetRecordingSourceForTesting() {
  45     return recording_source_.get();
  46   }
  47
  48  protected:
  49   explicit PictureLayer(ContentLayerClient* client);
  50   // Allow tests to inject a recording source.
  51   PictureLayer(ContentLayerClient* client, scoped_ptr<RecordingSource> source);
  52   ~PictureLayer() override;
  53
  54   bool HasDrawableContent() const override;
  55
  56   bool is_mask() const { return is_mask_; }
  57
  58  private:
  59   bool UpdateCanUseLCDText();
  60
  61   ContentLayerClient* client_;
  62   scoped_ptr<RecordingSource> recording_source_;
  63   devtools_instrumentation::
  64       ScopedLayerObjectTracker instrumentation_object_tracker_;
  65   // Invalidation to use the next time update is called.
  66   InvalidationRegion pending_invalidation_;
  67   // Invalidation from the last time update was called.
  68   Region recording_invalidation_;
  69   gfx::Rect last_updated_visible_content_rect_;
  70
  71   int update_source_frame_number_;
  72   bool can_use_lcd_text_for_update_;
  73   bool is_mask_;
  74   bool nearest_neighbor_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(PictureLayer);
  77 };
  78
  79 }  // namespace cc
  80
  81 #endif  // CC_LAYERS_PICTURE_LAYER_H_