picture_pile_base.h revision 1e9bf3e0803691d0a228da41fc608347b6db4340 
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.
4
5#ifndef CC_RESOURCES_PICTURE_PILE_BASE_H_
6#define CC_RESOURCES_PICTURE_PILE_BASE_H_
7
8#include <list>
9#include <utility>
10
11#include "base/containers/hash_tables.h"
12#include "base/memory/ref_counted.h"
13#include "cc/base/cc_export.h"
14#include "cc/base/region.h"
15#include "cc/base/tiling_data.h"
16#include "cc/resources/picture.h"
17#include "ui/gfx/size.h"
18
19namespace base {
20class Value;
21}
22
23namespace cc {
24
25class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
26 public:
27  PicturePileBase();
28  explicit PicturePileBase(const PicturePileBase* other);
29  PicturePileBase(const PicturePileBase* other, unsigned thread_index);
30
31  void Resize(gfx::Size size);
32  gfx::Size size() const { return tiling_.total_size(); }
33  void SetMinContentsScale(float min_contents_scale);
34
35  void UpdateRecordedRegion();
36  const Region& recorded_region() const { return recorded_region_; }
37
38  int num_tiles_x() const { return tiling_.num_tiles_x(); }
39  int num_tiles_y() const { return tiling_.num_tiles_y(); }
40  gfx::Rect tile_bounds(int x, int y) const { return tiling_.TileBounds(x, y); }
41  bool HasRecordingAt(int x, int y);
42  bool CanRaster(float contents_scale, gfx::Rect content_rect);
43
44  void SetTileGridSize(gfx::Size tile_grid_size);
45  TilingData& tiling() { return tiling_; }
46
47  scoped_ptr<base::Value> AsValue() const;
48
49 protected:
50  struct CC_EXPORT PictureInfo {
51    PictureInfo();
52    ~PictureInfo();
53
54    bool Invalidate();
55    PictureInfo CloneForThread(int thread_index) const;
56
57    scoped_refptr<Picture> picture;
58  };
59
60  typedef std::pair<int, int> PictureMapKey;
61  typedef base::hash_map<PictureMapKey, PictureInfo> PictureMap;
62
63  virtual ~PicturePileBase();
64
65  int num_raster_threads() { return num_raster_threads_; }
66  int buffer_pixels() const { return tiling_.border_texels(); }
67  void Clear();
68
69  gfx::Rect PaddedRect(const PictureMapKey& key);
70
71  // A picture pile is a tiled set of pictures. The picture map is a map of tile
72  // indices to picture infos.
73  PictureMap picture_map_;
74  TilingData tiling_;
75  Region recorded_region_;
76  float min_contents_scale_;
77  SkTileGridPicture::TileGridInfo tile_grid_info_;
78  SkColor background_color_;
79  bool contents_opaque_;
80  int slow_down_raster_scale_factor_for_debug_;
81  bool show_debug_picture_borders_;
82  int num_raster_threads_;
83
84 private:
85  void SetBufferPixels(int buffer_pixels);
86
87  friend class base::RefCounted<PicturePileBase>;
88  DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
89};
90
91}  // namespace cc
92
93#endif  // CC_RESOURCES_PICTURE_PILE_BASE_H_
94