metafile_skia_wrapper.h

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef PRINTING_METAFILE_SKIA_WRAPPER_H_
#define PRINTING_METAFILE_SKIA_WRAPPER_H_

#include "cc/paint/paint_canvas.h"
#include "printing/printing_export.h"
#include "third_party/skia/include/core/SkRefCnt.h"

namespace printing {

class PdfMetafileSkia;

// A wrapper class with static methods to set and retrieve a PdfMetafileSkia
// on an SkCanvas.  The ownership of the metafile is not affected and it
// is the caller's responsibility to ensure that the metafile remains valid
// as long as the canvas.
class PRINTING_EXPORT MetafileSkiaWrapper : public SkRefCnt {
 public:
  static void SetMetafileOnCanvas(cc::PaintCanvas* canvas,
                                  PdfMetafileSkia* metafile);

  static PdfMetafileSkia* GetMetafileFromCanvas(cc::PaintCanvas* canvas);

 private:
  explicit MetafileSkiaWrapper(PdfMetafileSkia* metafile);

  PdfMetafileSkia* metafile_;
};

}  // namespace printing

#endif  // PRINTING_METAFILE_SKIA_WRAPPER_H_