cc/layers/picture_layer_impl.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_IMPL_H_
   6 #define CC_LAYERS_PICTURE_LAYER_IMPL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "cc/base/cc_export.h"
  12 #include "cc/base/scoped_ptr_vector.h"
  13 #include "cc/layers/layer_impl.h"
  14 #include "cc/resources/picture_layer_tiling.h"
  15 #include "cc/resources/picture_layer_tiling_set.h"
  16 #include "cc/resources/picture_pile_impl.h"
  17 #include "skia/ext/refptr.h"
  18 #include "third_party/skia/include/core/SkPicture.h"
  19
  20 namespace cc {
  21
  22 struct AppendQuadsData;
  23 class QuadSink;
  24 class MicroBenchmarkImpl;
  25
  26 class CC_EXPORT PictureLayerImpl
  27     : public LayerImpl,
  28       NON_EXPORTED_BASE(public PictureLayerTilingClient) {
  29  public:
  30   static scoped_ptr<PictureLayerImpl> Create(LayerTreeImpl* tree_impl, int id) {
  31     return make_scoped_ptr(new PictureLayerImpl(tree_impl, id));
  32   }
  33   virtual ~PictureLayerImpl();
  34
  35   // LayerImpl overrides.
  36   virtual const char* LayerTypeAsString() const OVERRIDE;
  37   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
  38       OVERRIDE;
  39   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  40   virtual void AppendQuads(QuadSink* quad_sink,
  41                            AppendQuadsData* append_quads_data) OVERRIDE;
  42   virtual void UpdateTilePriorities() OVERRIDE;
  43   virtual void DidBecomeActive() OVERRIDE;
  44   virtual void DidBeginTracing() OVERRIDE;
  45   virtual void DidLoseOutputSurface() OVERRIDE;
  46   virtual void CalculateContentsScale(float ideal_contents_scale,
  47                                       float device_scale_factor,
  48                                       float page_scale_factor,
  49                                       bool animating_transform_to_screen,
  50                                       float* contents_scale_x,
  51                                       float* contents_scale_y,
  52                                       gfx::Size* content_bounds) OVERRIDE;
  53   virtual skia::RefPtr<SkPicture> GetPicture() OVERRIDE;
  54
  55   // PictureLayerTilingClient overrides.
  56   virtual scoped_refptr<Tile> CreateTile(PictureLayerTiling* tiling,
  57                                          gfx::Rect content_rect) OVERRIDE;
  58   virtual void UpdatePile(Tile* tile) OVERRIDE;
  59   virtual gfx::Size CalculateTileSize(
  60       gfx::Size content_bounds) const OVERRIDE;
  61   virtual const Region* GetInvalidation() OVERRIDE;
  62   virtual const PictureLayerTiling* GetTwinTiling(
  63       const PictureLayerTiling* tiling) const OVERRIDE;
  64
  65   // PushPropertiesTo active tree => pending tree.
  66   void SyncTiling(const PictureLayerTiling* tiling);
  67
  68   // Mask-related functions
  69   void SetIsMask(bool is_mask);
  70   virtual ResourceProvider::ResourceId ContentsResourceId() const OVERRIDE;
  71
  72   virtual size_t GPUMemoryUsageInBytes() const OVERRIDE;
  73
  74   virtual void RunMicroBenchmark(MicroBenchmarkImpl* benchmark) OVERRIDE;
  75
  76   void SetShouldUseGpuRasterization(bool should_use_gpu_rasterization);
  77   bool should_use_gpu_rasterization() const {
  78     return should_use_gpu_rasterization_;
  79   }
  80
  81  protected:
  82   PictureLayerImpl(LayerTreeImpl* tree_impl, int id);
  83   PictureLayerTiling* AddTiling(float contents_scale);
  84   void RemoveTiling(float contents_scale);
  85   void RemoveAllTilings();
  86   void SyncFromActiveLayer(const PictureLayerImpl* other);
  87   void ManageTilings(bool animating_transform_to_screen);
  88   virtual bool ShouldAdjustRasterScale(
  89       bool animating_transform_to_screen) const;
  90   virtual void RecalculateRasterScales(
  91       bool animating_transform_to_screen);
  92   void CleanUpTilingsOnActiveLayer(
  93       std::vector<PictureLayerTiling*> used_tilings);
  94   float MinimumContentsScale() const;
  95   float SnappedContentsScale(float new_contents_scale);
  96   void UpdateLCDTextStatus(bool new_status);
  97   void ResetRasterScale();
  98   void MarkVisibleResourcesAsRequired() const;
  99   bool MarkVisibleTilesAsRequired(
 100       PictureLayerTiling* tiling,
 101       const PictureLayerTiling* optional_twin_tiling,
 102       float contents_scale,
 103       gfx::Rect rect,
 104       const Region& missing_region) const;
 105
 106   void DoPostCommitInitializationIfNeeded() {
 107     if (needs_post_commit_initialization_)
 108       DoPostCommitInitialization();
 109   }
 110   void DoPostCommitInitialization();
 111
 112   bool CanHaveTilings() const;
 113   bool CanHaveTilingWithScale(float contents_scale) const;
 114   void SanityCheckTilingState() const;
 115
 116   virtual void GetDebugBorderProperties(
 117       SkColor* color, float* width) const OVERRIDE;
 118   virtual void AsValueInto(base::DictionaryValue* dict) const OVERRIDE;
 119
 120   PictureLayerImpl* twin_layer_;
 121
 122   scoped_ptr<PictureLayerTilingSet> tilings_;
 123   scoped_refptr<PicturePileImpl> pile_;
 124   Region invalidation_;
 125
 126   gfx::Transform last_screen_space_transform_;
 127   gfx::Size last_bounds_;
 128   float last_content_scale_;
 129   bool is_mask_;
 130
 131   float ideal_page_scale_;
 132   float ideal_device_scale_;
 133   float ideal_source_scale_;
 134   float ideal_contents_scale_;
 135
 136   float raster_page_scale_;
 137   float raster_device_scale_;
 138   float raster_source_scale_;
 139   float raster_contents_scale_;
 140   float low_res_raster_contents_scale_;
 141
 142   bool raster_source_scale_was_animating_;
 143   bool is_using_lcd_text_;
 144   bool needs_post_commit_initialization_;
 145   // A sanity state check to make sure UpdateTilePriorities only gets called
 146   // after a CalculateContentsScale/ManageTilings.
 147   bool should_update_tile_priorities_;
 148   bool should_use_gpu_rasterization_;
 149
 150   friend class PictureLayer;
 151   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 152 };
 153
 154 }  // namespace cc
 155
 156 #endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_