cc/resources/bitmap_skpicture_content_layer_updater.h

   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
  11 namespace 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.
  16 class 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_