cc/resources/picture_pile.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_RESOURCES_PICTURE_PILE_H_
   6 #define CC_RESOURCES_PICTURE_PILE_H_
   7
   8 #include <bitset>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "base/containers/hash_tables.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "cc/base/tiling_data.h"
  15 #include "cc/resources/picture.h"
  16
  17 namespace cc {
  18 class PicturePileImpl;
  19
  20 class CC_EXPORT PicturePile : public RecordingSource {
  21  public:
  22   PicturePile(float min_contents_scale, const gfx::Size& tile_grid_size);
  23   ~PicturePile() override;
  24
  25   // RecordingSource overrides.
  26   bool UpdateAndExpandInvalidation(ContentLayerClient* painter,
  27                                    Region* invalidation,
  28                                    const gfx::Size& layer_size,
  29                                    const gfx::Rect& visible_layer_rect,
  30                                    int frame_number,
  31                                    RecordingMode recording_mode) override;
  32   scoped_refptr<RasterSource> CreateRasterSource(
  33       bool can_use_lcd_text) const override;
  34   gfx::Size GetSize() const final;
  35   void SetEmptyBounds() override;
  36   void SetSlowdownRasterScaleFactor(int factor) override;
  37   void SetGatherPixelRefs(bool gather_pixel_refs) override;
  38   void SetBackgroundColor(SkColor background_color) override;
  39   void SetRequiresClear(bool requires_clear) override;
  40   bool IsSuitableForGpuRasterization() const override;
  41   void SetUnsuitableForGpuRasterizationForTesting() override;
  42   gfx::Size GetTileGridSizeForTesting() const override;
  43
  44   typedef std::pair<int, int> PictureMapKey;
  45   typedef base::hash_map<PictureMapKey, scoped_refptr<const Picture>>
  46       PictureMap;
  47
  48   // An internal CanRaster check that goes to the picture_map rather than
  49   // using the recorded_viewport hint.
  50   bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
  51
  52   void Clear();
  53
  54   void SetMinContentsScale(float min_contents_scale);
  55   void SetTileGridSize(const gfx::Size& tile_grid_size);
  56
  57   gfx::Rect PaddedRect(const PictureMapKey& key) const;
  58   gfx::Rect PadRect(const gfx::Rect& rect) const;
  59
  60   int buffer_pixels() const { return tiling_.border_texels(); }
  61
  62   // A picture pile is a tiled set of pictures. The picture map is a map of tile
  63   // indices to picture infos.
  64   PictureMap picture_map_;
  65   TilingData tiling_;
  66
  67   // If non-empty, all pictures tiles inside this rect are recorded. There may
  68   // be recordings outside this rect, but everything inside the rect is
  69   // recorded.
  70   gfx::Rect recorded_viewport_;
  71   float min_contents_scale_;
  72   gfx::Size tile_grid_size_;
  73   int slow_down_raster_scale_factor_for_debug_;
  74   bool gather_pixel_refs_;
  75   // A hint about whether there are any recordings. This may be a false
  76   // positive.
  77   bool has_any_recordings_;
  78   bool clear_canvas_with_debug_color_;
  79   bool requires_clear_;
  80   bool is_solid_color_;
  81   SkColor solid_color_;
  82   SkColor background_color_;
  83   int pixel_record_distance_;
  84
  85  private:
  86   friend class PicturePileImpl;
  87
  88   void CreatePictures(ContentLayerClient* painter,
  89                       RecordingMode recording_mode,
  90                       const std::vector<gfx::Rect>& record_rects);
  91   void GetInvalidTileRects(const gfx::Rect& interest_rect,
  92                            std::vector<gfx::Rect>* invalid_tiles);
  93   bool ApplyInvalidationAndResize(const gfx::Rect& interest_rect,
  94                                   Region* invalidation,
  95                                   const gfx::Size& layer_size,
  96                                   int frame_number);
  97   void DetermineIfSolidColor();
  98   void SetBufferPixels(int buffer_pixels);
  99
 100   bool is_suitable_for_gpu_rasterization_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(PicturePile);
 103 };
 104
 105 }  // namespace cc
 106
 107 #endif  // CC_RESOURCES_PICTURE_PILE_H_