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);
34 gfx::Size tiling_size() const { return tiling_.tiling_size(); }
35 void SetMinContentsScale(float min_contents_scale);
37 // If non-empty, all pictures tiles inside this rect are recorded. There may
38 // be recordings outside this rect, but everything inside the rect is
40 gfx::Rect recorded_viewport() const { return recorded_viewport_; }
42 int num_tiles_x() const { return tiling_.num_tiles_x(); }
43 int num_tiles_y() const { return tiling_.num_tiles_y(); }
44 gfx::Rect tile_bounds(int x, int y) const { return tiling_.TileBounds(x, y); }
45 bool HasRecordingAt(int x, int y);
46 bool CanRaster(float contents_scale, const gfx::Rect& content_rect);
48 // If this pile contains any valid recordings. May have false positives.
49 bool HasRecordings() const { return has_any_recordings_; }
51 // If this pile has ever contained any recordings with text.
52 bool has_text() const { return has_text_; }
54 bool is_solid_color() const { return is_solid_color_; }
55 SkColor solid_color() const { return solid_color_; }
57 void set_is_mask(bool is_mask) { is_mask_ = is_mask; }
58 bool is_mask() const { return is_mask_; }
60 static void ComputeTileGridInfo(const gfx::Size& tile_grid_size,
61 SkTileGridFactory::TileGridInfo* info);
63 void SetTileGridSize(const gfx::Size& tile_grid_size);
64 TilingData& tiling() { return tiling_; }
66 void AsValueInto(base::debug::TracedValue* array) const;
69 class CC_EXPORT PictureInfo {
72 INVALIDATION_FRAMES_TRACKED = 32
78 bool Invalidate(int frame_number);
79 bool NeedsRecording(int frame_number, int distance_to_visible);
80 void SetPicture(scoped_refptr<Picture> picture);
81 const Picture* GetPicture() const;
83 float GetInvalidationFrequencyForTesting() const {
84 return GetInvalidationFrequency();
88 void AdvanceInvalidationHistory(int frame_number);
89 float GetInvalidationFrequency() const;
91 int last_frame_number_;
92 scoped_refptr<const Picture> picture_;
93 std::bitset<INVALIDATION_FRAMES_TRACKED> invalidation_history_;
96 typedef std::pair<int, int> PictureMapKey;
97 typedef base::hash_map<PictureMapKey, PictureInfo> PictureMap;
99 virtual ~PicturePileBase();
101 int buffer_pixels() const { return tiling_.border_texels(); }
104 gfx::Rect PaddedRect(const PictureMapKey& key) const;
105 gfx::Rect PadRect(const gfx::Rect& rect) const;
107 // An internal CanRaster check that goes to the picture_map rather than
108 // using the recorded_viewport hint.
109 bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
111 // A picture pile is a tiled set of pictures. The picture map is a map of tile
112 // indices to picture infos.
113 PictureMap picture_map_;
115 gfx::Rect recorded_viewport_;
116 float min_contents_scale_;
117 SkTileGridFactory::TileGridInfo tile_grid_info_;
118 SkColor background_color_;
119 int slow_down_raster_scale_factor_for_debug_;
120 bool contents_opaque_;
121 bool contents_fill_bounds_completely_;
122 bool show_debug_picture_borders_;
123 bool clear_canvas_with_debug_color_;
124 // A hint about whether there are any recordings. This may be a false
126 bool has_any_recordings_;
129 bool is_solid_color_;
130 SkColor solid_color_;
133 void SetBufferPixels(int buffer_pixels);
135 friend class base::RefCounted<PicturePileBase>;
136 DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
141 #endif // CC_RESOURCES_PICTURE_PILE_BASE_H_