third_party/WebKit/Source/platform/graphics/PictureSnapshot.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef PictureSnapshot_h
#define PictureSnapshot_h

#include <memory>

#include "platform/PlatformExport.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/json/JSONValues.h"
#include "platform/wtf/RefCounted.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
#include "third_party/skia/include/core/SkRefCnt.h"

namespace blink {

class FloatRect;

class PLATFORM_EXPORT PictureSnapshot : public RefCounted<PictureSnapshot> {
  WTF_MAKE_NONCOPYABLE(PictureSnapshot);

 public:
  typedef Vector<Vector<double>> Timings;

  struct TilePictureStream : RefCounted<TilePictureStream> {
    FloatPoint layer_offset;
    Vector<char> data;
  };

  static scoped_refptr<PictureSnapshot> Load(
      const Vector<scoped_refptr<TilePictureStream>>&);

  PictureSnapshot(sk_sp<const SkPicture>);

  std::unique_ptr<Vector<char>> Replay(unsigned from_step = 0,
                                       unsigned to_step = 0,
                                       double scale = 1.0) const;
  std::unique_ptr<Timings> Profile(unsigned min_iterations,
                                   double min_duration,
                                   const FloatRect* clip_rect) const;
  std::unique_ptr<JSONArray> SnapshotCommandLog() const;
  bool IsEmpty() const;

 private:
  std::unique_ptr<SkBitmap> CreateBitmap() const;

  sk_sp<const SkPicture> picture_;
};

}  // namespace blink

#endif  // PictureSnapshot_h