cc/resources/display_item_list.h

   1 // Copyright 2014 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_DISPLAY_ITEM_LIST_H_
   6 #define CC_RESOURCES_DISPLAY_ITEM_LIST_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/trace_event/trace_event.h"
  11 #include "cc/base/cc_export.h"
  12 #include "cc/base/scoped_ptr_vector.h"
  13 #include "cc/resources/display_item.h"
  14 #include "cc/resources/pixel_ref_map.h"
  15 #include "skia/ext/refptr.h"
  16 #include "third_party/skia/include/core/SkPicture.h"
  17 #include "ui/gfx/geometry/rect.h"
  18
  19 class SkCanvas;
  20 class SkDrawPictureCallback;
  21
  22 namespace cc {
  23
  24 class CC_EXPORT DisplayItemList
  25     : public base::RefCountedThreadSafe<DisplayItemList> {
  26  public:
  27   static scoped_refptr<DisplayItemList> Create();
  28
  29   void Raster(SkCanvas* canvas,
  30               SkDrawPictureCallback* callback,
  31               float contents_scale) const;
  32
  33   void AppendItem(scoped_ptr<DisplayItem> item);
  34
  35   void set_layer_rect(gfx::Rect layer_rect) { layer_rect_ = layer_rect; }
  36   gfx::Rect layer_rect() const { return layer_rect_; }
  37
  38   void CreateAndCacheSkPicture();
  39
  40   bool IsSuitableForGpuRasterization() const;
  41   int ApproximateOpCount() const;
  42   size_t PictureMemoryUsage() const;
  43
  44   scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
  45
  46   void EmitTraceSnapshot() const;
  47
  48   void GatherPixelRefs(const gfx::Size& grid_cell_size);
  49
  50  private:
  51   DisplayItemList();
  52   ~DisplayItemList();
  53   ScopedPtrVector<DisplayItem> items_;
  54   skia::RefPtr<SkPicture> picture_;
  55
  56   gfx::Rect layer_rect_;
  57   bool is_suitable_for_gpu_rasterization_;
  58   int approximate_op_count_;
  59
  60   scoped_ptr<PixelRefMap> pixel_refs_;
  61
  62   friend class base::RefCountedThreadSafe<DisplayItemList>;
  63   friend class PixelRefMap::Iterator;
  64   DISALLOW_COPY_AND_ASSIGN(DisplayItemList);
  65 };
  66
  67 }  // namespace cc
  68
  69 #endif  // CC_RESOURCES_DISPLAY_ITEM_LIST_H_