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 "ui/gfx/geometry/rect.h"
  15
  16 class SkCanvas;
  17 class SkDrawPictureCallback;
  18
  19 namespace cc {
  20
  21 class CC_EXPORT DisplayItemList
  22     : public base::RefCountedThreadSafe<DisplayItemList> {
  23  public:
  24   static scoped_refptr<DisplayItemList> Create();
  25
  26   void Raster(SkCanvas* canvas,
  27               SkDrawPictureCallback* callback,
  28               float contents_scale) const;
  29
  30   void AppendItem(scoped_ptr<DisplayItem> item);
  31
  32   void set_layer_rect(gfx::Rect layer_rect) { layer_rect_ = layer_rect; }
  33   gfx::Rect layer_rect() const { return layer_rect_; }
  34
  35   bool IsSuitableForGpuRasterization() const;
  36   int ApproximateOpCount() const;
  37   size_t PictureMemoryUsage() const;
  38
  39   scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
  40
  41   void EmitTraceSnapshot() const;
  42
  43  private:
  44   DisplayItemList();
  45   ~DisplayItemList();
  46   ScopedPtrVector<DisplayItem> items_;
  47   gfx::Rect layer_rect_;
  48   bool is_suitable_for_gpu_rasterization_;
  49   int approximate_op_count_;
  50
  51   friend class base::RefCountedThreadSafe<DisplayItemList>;
  52   DISALLOW_COPY_AND_ASSIGN(DisplayItemList);
  53 };
  54
  55 }  // namespace cc
  56
  57 #endif  // CC_RESOURCES_DISPLAY_ITEM_LIST_H_