src/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
  25 class CC_EXPORT PictureLayerImpl
  26     : public LayerImpl,
  27       NON_EXPORTED_BASE(public PictureLayerTilingClient) {
  28  public:
  29   static scoped_ptr<PictureLayerImpl> Create(LayerTreeImpl* tree_impl, int id) {
  30     return make_scoped_ptr(new PictureLayerImpl(tree_impl, id));
  31   }
  32   virtual ~PictureLayerImpl();
  33
  34   // LayerImpl overrides.
  35   virtual const char* LayerTypeAsString() const OVERRIDE;
  36   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
  37       OVERRIDE;
  38   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  39   virtual void AppendQuads(QuadSink* quad_sink,
  40                            AppendQuadsData* append_quads_data) OVERRIDE;
  41   virtual void UpdateTilePriorities() OVERRIDE;
  42   virtual void DidBecomeActive() OVERRIDE;
  43   virtual void DidBeginTracing() OVERRIDE;
  44   virtual void DidLoseOutputSurface() OVERRIDE;
  45   virtual void CalculateContentsScale(float ideal_contents_scale,
  46                                       float device_scale_factor,
  47                                       float page_scale_factor,
  48                                       bool animating_transform_to_screen,
  49                                       float* contents_scale_x,
  50                                       float* contents_scale_y,
  51                                       gfx::Size* content_bounds) OVERRIDE;
  52   virtual skia::RefPtr<SkPicture> GetPicture() OVERRIDE;
  53
  54   // PictureLayerTilingClient overrides.
  55   virtual scoped_refptr<Tile> CreateTile(PictureLayerTiling* tiling,
  56                                          gfx::Rect content_rect) OVERRIDE;
  57   virtual void UpdatePile(Tile* tile) OVERRIDE;
  58   virtual gfx::Size CalculateTileSize(
  59       gfx::Size content_bounds) const OVERRIDE;
  60   virtual const Region* GetInvalidation() OVERRIDE;
  61   virtual const PictureLayerTiling* GetTwinTiling(
  62       const PictureLayerTiling* tiling) OVERRIDE;
  63
  64   // PushPropertiesTo active tree => pending tree.
  65   void SyncTiling(const PictureLayerTiling* tiling);
  66
  67   // Mask-related functions
  68   void SetIsMask(bool is_mask);
  69   virtual ResourceProvider::ResourceId ContentsResourceId() const OVERRIDE;
  70
  71   virtual size_t GPUMemoryUsageInBytes() const OVERRIDE;
  72
  73  protected:
  74   PictureLayerImpl(LayerTreeImpl* tree_impl, int id);
  75   PictureLayerTiling* AddTiling(float contents_scale);
  76   void RemoveTiling(float contents_scale);
  77   void SyncFromActiveLayer(const PictureLayerImpl* other);
  78   void ManageTilings(bool animating_transform_to_screen);
  79   virtual bool ShouldAdjustRasterScale(
  80       bool animating_transform_to_screen) const;
  81   virtual void CalculateRasterContentsScale(
  82       bool animating_transform_to_screen,
  83       float* raster_contents_scale,
  84       float* low_res_raster_contents_scale) const;
  85   void CleanUpTilingsOnActiveLayer(
  86       std::vector<PictureLayerTiling*> used_tilings);
  87   float MinimumContentsScale() const;
  88   void UpdateLCDTextStatus(bool new_status);
  89   void ResetRasterScale();
  90   void MarkVisibleResourcesAsRequired() const;
  91   void DoPostCommitInitializationIfNeeded() {
  92     if (needs_post_commit_initialization_)
  93       DoPostCommitInitialization();
  94   }
  95   void DoPostCommitInitialization();
  96
  97   bool CanHaveTilings() const;
  98   bool CanHaveTilingWithScale(float contents_scale) const;
  99   void SanityCheckTilingState() const;
 100
 101   virtual void GetDebugBorderProperties(
 102       SkColor* color, float* width) const OVERRIDE;
 103   virtual void AsValueInto(base::DictionaryValue* dict) const OVERRIDE;
 104
 105   PictureLayerImpl* twin_layer_;
 106
 107   scoped_ptr<PictureLayerTilingSet> tilings_;
 108   scoped_refptr<PicturePileImpl> pile_;
 109   Region invalidation_;
 110
 111   gfx::Transform last_screen_space_transform_;
 112   gfx::Size last_bounds_;
 113   float last_content_scale_;
 114   bool is_mask_;
 115
 116   float ideal_page_scale_;
 117   float ideal_device_scale_;
 118   float ideal_source_scale_;
 119   float ideal_contents_scale_;
 120
 121   float raster_page_scale_;
 122   float raster_device_scale_;
 123   float raster_source_scale_;
 124   float raster_contents_scale_;
 125   float low_res_raster_contents_scale_;
 126
 127   bool raster_source_scale_was_animating_;
 128   bool is_using_lcd_text_;
 129   bool needs_post_commit_initialization_;
 130   // A sanity state check to make sure UpdateTilePriorities only gets called
 131   // after a CalculateContentsScale/ManageTilings.
 132   bool should_update_tile_priorities_;
 133
 134   friend class PictureLayer;
 135   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);
 136 };
 137
 138 }  // namespace cc
 139
 140 #endif  // CC_LAYERS_PICTURE_LAYER_IMPL_H_