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   virtual void Raster(SkCanvas* canvas,
  23                       SkDrawPictureCallback* callback) const = 0;
  24   virtual void RasterForTracing(SkCanvas* canvas) const;
  25
  26   virtual bool IsSuitableForGpuRasterization() const = 0;
  27   virtual int ApproximateOpCount() const = 0;
  28   virtual size_t PictureMemoryUsage() const = 0;
  29   virtual void AsValueInto(base::trace_event::TracedValue* array) const = 0;
  30
  31  protected:
  32   DisplayItem();
  33 };
  34
  35 }  // namespace cc
  36
  37 #endif  // CC_RESOURCES_DISPLAY_ITEM_H_