cc/playback/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_PLAYBACK_DISPLAY_ITEM_H_
   6 #define CC_PLAYBACK_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 "third_party/skia/include/core/SkPicture.h"
  12 #include "ui/gfx/geometry/rect.h"
  13
  14 class SkCanvas;
  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 external_memory_usage) {
  25     is_suitable_for_gpu_rasterization_ = is_suitable_for_gpu_rasterization;
  26     approximate_op_count_ = approximate_op_count;
  27     external_memory_usage_ = external_memory_usage;
  28   }
  29
  30   virtual void Raster(SkCanvas* canvas,
  31                       const gfx::Rect& canvas_target_playback_rect,
  32                       SkPicture::AbortCallback* 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 external_memory_usage() const { return external_memory_usage_; }
  40
  41  protected:
  42   DisplayItem();
  43
  44   bool is_suitable_for_gpu_rasterization_;
  45   int approximate_op_count_;
  46
  47   // The size, in bytes, of the memory owned by this display item but not
  48   // allocated within it (e.g. held through scoped_ptr or vector).
  49   size_t external_memory_usage_;
  50 };
  51
  52 }  // namespace cc
  53
  54 #endif  // CC_PLAYBACK_DISPLAY_ITEM_H_