cc/resources/display_item.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_H_
   6 #define CC_RESOURCES_DISPLAY_ITEM_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "cc/base/cc_export.h"
  10 #include "cc/debug/traced_value.h"
  11 #include "ui/gfx/geometry/rect.h"
  12
  13 class SkCanvas;
  14 class SkDrawPictureCallback;
  15
  16 namespace cc {
  17
  18 class CC_EXPORT DisplayItem {
  19  public:
  20   virtual ~DisplayItem() {}
  21
  22   void SetNew(bool is_suitable_for_gpu_rasterization,
  23               int approximate_op_count,
  24               size_t picture_memory_usage) {
  25     is_suitable_for_gpu_rasterization_ = is_suitable_for_gpu_rasterization;
  26     approximate_op_count_ = approximate_op_count;
  27     picture_memory_usage_ =
  28         picture_memory_usage + sizeof(bool) + sizeof(int) + sizeof(size_t);
  29   }
  30
  31   virtual void Raster(SkCanvas* canvas,
  32                       SkDrawPictureCallback* callback) const = 0;
  33   virtual void AsValueInto(base::trace_event::TracedValue* array) const = 0;
  34
  35   bool is_suitable_for_gpu_rasterization() const {
  36     return is_suitable_for_gpu_rasterization_;
  37   }
  38   int approximate_op_count() const { return approximate_op_count_; }
  39   size_t picture_memory_usage() const { return picture_memory_usage_; }
  40
  41  protected:
  42   DisplayItem();
  43
  44   bool is_suitable_for_gpu_rasterization_;
  45   int approximate_op_count_;
  46   size_t picture_memory_usage_;
  47 };
  48
  49 }  // namespace cc
  50
  51 #endif  // CC_RESOURCES_DISPLAY_ITEM_H_