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

/*
 * Copyright (C) 2012 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:
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

#ifndef ContentLayerDelegate_h
#define ContentLayerDelegate_h

#include "platform/PlatformExport.h"
#include "platform/geometry/IntSize.h"
#include "public/platform/WebContentLayerClient.h"
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"

class SkCanvas;

namespace gfx {
class Rect;
}

namespace blink {

class IntRect;
class GraphicsLayer;

class PLATFORM_EXPORT ContentLayerDelegate : public WebContentLayerClient {
  WTF_MAKE_NONCOPYABLE(ContentLayerDelegate);
  USING_FAST_MALLOC(ContentLayerDelegate);

 public:
  explicit ContentLayerDelegate(GraphicsLayer*);
  ~ContentLayerDelegate() override;

  gfx::Rect paintableRegion() override;

  // WebContentLayerClient implementation.
  void paintContents(WebDisplayItemList*,
                     WebContentLayerClient::PaintingControlSetting =
                         PaintDefaultBehavior) override;
  size_t approximateUnsharedMemoryUsage() const override;

 private:
  GraphicsLayer* m_graphicsLayer;
};

}  // namespace blink

#endif  // ContentLayerDelegate_h