1// Copyright 2011 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_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
6#define CC_RESOURCES_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
7
8#include "cc/resources/skpicture_content_layer_updater.h"
9#include "third_party/skia/include/core/SkBitmap.h"
10
11namespace cc {
12
13// This class records the content_rect into an SkPicture, then software
14// rasterizes the SkPicture into bitmaps for each tile. This implements
15// LayerTreeSettingSettings::per_tile_painting_enabled.
16class BitmapSkPictureContentLayerUpdater : public SkPictureContentLayerUpdater {
17 public:
18  class Resource : public ContentLayerUpdater::Resource {
19   public:
20    Resource(BitmapSkPictureContentLayerUpdater* updater,
21             scoped_ptr<PrioritizedResource> texture);
22
23    virtual void Update(ResourceUpdateQueue* queue,
24                        const gfx::Rect& source_rect,
25                        const gfx::Vector2d& dest_offset,
26                        bool partial_update) OVERRIDE;
27
28   private:
29    SkBitmap bitmap_;
30    BitmapSkPictureContentLayerUpdater* updater_;
31
32    DISALLOW_COPY_AND_ASSIGN(Resource);
33  };
34
35  static scoped_refptr<BitmapSkPictureContentLayerUpdater> Create(
36      scoped_ptr<LayerPainter> painter,
37      RenderingStatsInstrumentation* stats_instrumentation,
38      int layer_id);
39
40  virtual scoped_ptr<LayerUpdater::Resource> CreateResource(
41      PrioritizedResourceManager* manager) OVERRIDE;
42  void PaintContentsRect(SkCanvas* canvas,
43                         const gfx::Rect& source_rect);
44
45 private:
46  BitmapSkPictureContentLayerUpdater(
47      scoped_ptr<LayerPainter> painter,
48      RenderingStatsInstrumentation* stats_instrumentation,
49      int layer_id);
50  virtual ~BitmapSkPictureContentLayerUpdater();
51
52  DISALLOW_COPY_AND_ASSIGN(BitmapSkPictureContentLayerUpdater);
53};
54
55}  // namespace cc
56
57#endif  // CC_RESOURCES_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
58