1 // Copyright 2013 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.
5 #ifndef CC_RESOURCES_PICTURE_PILE_BASE_H_
6 #define CC_RESOURCES_PICTURE_PILE_BASE_H_
12 #include "base/containers/hash_tables.h"
13 #include "base/memory/ref_counted.h"
14 #include "cc/base/cc_export.h"
15 #include "cc/base/region.h"
16 #include "cc/base/tiling_data.h"
17 #include "cc/resources/picture.h"
18 #include "ui/gfx/size.h"
29 class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
32 explicit PicturePileBase(const PicturePileBase* other);
33 PicturePileBase(const PicturePileBase* other, unsigned thread_index);
35 gfx::Size tiling_size() const { return tiling_.tiling_size(); }
36 void SetMinContentsScale(float min_contents_scale);
38 // If non-empty, all pictures tiles inside this rect are recorded. There may
39 // be recordings outside this rect, but everything inside the rect is
41 gfx::Rect recorded_viewport() const { return recorded_viewport_; }
43 int num_tiles_x() const { return tiling_.num_tiles_x(); }
44 int num_tiles_y() const { return tiling_.num_tiles_y(); }
45 gfx::Rect tile_bounds(int x, int y) const { return tiling_.TileBounds(x, y); }
46 bool HasRecordingAt(int x, int y);
47 bool CanRaster(float contents_scale, const gfx::Rect& content_rect);
49 // If this pile contains any valid recordings. May have false positives.
50 bool HasRecordings() const { return has_any_recordings_; }
52 static void ComputeTileGridInfo(const gfx::Size& tile_grid_size,
53 SkTileGridFactory::TileGridInfo* info);
55 void SetTileGridSize(const gfx::Size& tile_grid_size);
56 TilingData& tiling() { return tiling_; }
58 void AsValueInto(base::debug::TracedValue* array) const;
61 class CC_EXPORT PictureInfo {
64 INVALIDATION_FRAMES_TRACKED = 32
70 bool Invalidate(int frame_number);
71 bool NeedsRecording(int frame_number, int distance_to_visible);
72 PictureInfo CloneForThread(int thread_index) const;
73 void SetPicture(scoped_refptr<Picture> picture);
74 Picture* GetPicture() const;
76 float GetInvalidationFrequencyForTesting() const {
77 return GetInvalidationFrequency();
81 void AdvanceInvalidationHistory(int frame_number);
82 float GetInvalidationFrequency() const;
84 int last_frame_number_;
85 scoped_refptr<Picture> picture_;
86 std::bitset<INVALIDATION_FRAMES_TRACKED> invalidation_history_;
89 typedef std::pair<int, int> PictureMapKey;
90 typedef base::hash_map<PictureMapKey, PictureInfo> PictureMap;
92 virtual ~PicturePileBase();
94 int buffer_pixels() const { return tiling_.border_texels(); }
97 gfx::Rect PaddedRect(const PictureMapKey& key);
98 gfx::Rect PadRect(const gfx::Rect& rect);
100 // An internal CanRaster check that goes to the picture_map rather than
101 // using the recorded_viewport hint.
102 bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
104 // A picture pile is a tiled set of pictures. The picture map is a map of tile
105 // indices to picture infos.
106 PictureMap picture_map_;
108 gfx::Rect recorded_viewport_;
109 float min_contents_scale_;
110 SkTileGridFactory::TileGridInfo tile_grid_info_;
111 SkColor background_color_;
112 int slow_down_raster_scale_factor_for_debug_;
113 bool contents_opaque_;
114 bool contents_fill_bounds_completely_;
115 bool show_debug_picture_borders_;
116 bool clear_canvas_with_debug_color_;
117 // A hint about whether there are any recordings. This may be a false
119 bool has_any_recordings_;
122 void SetBufferPixels(int buffer_pixels);
124 friend class base::RefCounted<PicturePileBase>;
125 DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
130 #endif // CC_RESOURCES_PICTURE_PILE_BASE_H_