picture_pile_base.h revision 868fa2fe829687343ffae624259930155e16dbd8 
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/hash_tables.h"
12#include "base/memory/ref_counted.h"
13#include "cc/base/cc_export.h"
14#include "cc/base/hash_pair.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"
19
20namespace base {
21class Value;
22}
23
24namespace cc {
25
26class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
27 public:
28  PicturePileBase();
29  explicit PicturePileBase(const PicturePileBase* other);
30  PicturePileBase(const PicturePileBase* other, unsigned thread_index);
31
32  void Resize(gfx::Size size);
33  gfx::Size size() const { return tiling_.total_size(); }
34  void SetMinContentsScale(float min_contents_scale);
35
36  void UpdateRecordedRegion();
37  const Region& recorded_region() const { return recorded_region_; }
38
39  int num_tiles_x() const { return tiling_.num_tiles_x(); }
40  int num_tiles_y() const { return tiling_.num_tiles_y(); }
41  gfx::Rect tile_bounds(int x, int y) const { return tiling_.TileBounds(x, y); }
42  bool HasRecordingAt(int x, int y);
43  bool CanRaster(float contents_scale, gfx::Rect content_rect);
44
45  void SetTileGridSize(gfx::Size tile_grid_size);
46  TilingData& tiling() { return tiling_; }
47
48  scoped_ptr<base::Value> AsValue() const;
49
50 protected:
51  virtual ~PicturePileBase();
52
53  int num_raster_threads() { return num_raster_threads_; }
54  int buffer_pixels() const { return tiling_.border_texels(); }
55  void Clear();
56
57  typedef std::pair<int, int> PictureListMapKey;
58  typedef std::list<scoped_refptr<Picture> > PictureList;
59  typedef base::hash_map<PictureListMapKey, PictureList> PictureListMap;
60
61  // A picture pile is a tiled set of picture lists.  The picture list map
62  // is a map of tile indices to picture lists.
63  PictureListMap picture_list_map_;
64  TilingData tiling_;
65  Region recorded_region_;
66  float min_contents_scale_;
67  SkTileGridPicture::TileGridInfo tile_grid_info_;
68  SkColor background_color_;
69  bool contents_opaque_;
70  int slow_down_raster_scale_factor_for_debug_;
71  bool show_debug_picture_borders_;
72  int num_raster_threads_;
73
74 private:
75  void SetBufferPixels(int buffer_pixels);
76
77  friend class base::RefCounted<PicturePileBase>;
78  DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
79};
80
81}  // namespace cc
82
83#endif  // CC_RESOURCES_PICTURE_PILE_BASE_H_
84