1/*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef Canvas2DImageBufferSurface_h
32#define Canvas2DImageBufferSurface_h
33
34#include "platform/graphics/Canvas2DLayerBridge.h"
35#include "platform/graphics/ImageBufferSurface.h"
36
37namespace blink {
38
39// This shim necessary because ImageBufferSurfaces are not allowed to be RefCounted
40class Canvas2DImageBufferSurface FINAL : public ImageBufferSurface {
41public:
42    Canvas2DImageBufferSurface(const IntSize& size, OpacityMode opacityMode = NonOpaque, int msaaSampleCount = 1)
43        : ImageBufferSurface(size, opacityMode)
44        , m_layerBridge(Canvas2DLayerBridge::create(size, opacityMode, msaaSampleCount))
45    {
46        clear();
47    }
48
49    virtual ~Canvas2DImageBufferSurface()
50    {
51        if (m_layerBridge)
52            m_layerBridge->beginDestruction();
53    }
54
55    // ImageBufferSurface implementation
56    virtual void finalizeFrame(const FloatRect &dirtyRect) OVERRIDE { m_layerBridge->finalizeFrame(dirtyRect); }
57    virtual void willAccessPixels() OVERRIDE { m_layerBridge->willAccessPixels(); }
58    virtual SkCanvas* canvas() const OVERRIDE { return m_layerBridge->canvas(); }
59    virtual bool isValid() const OVERRIDE { return m_layerBridge && m_layerBridge->checkSurfaceValid(); }
60    virtual bool restore() OVERRIDE { return m_layerBridge->restoreSurface(); }
61    virtual WebLayer* layer() const OVERRIDE { return m_layerBridge->layer(); }
62    virtual Platform3DObject getBackingTexture() const OVERRIDE { return m_layerBridge->getBackingTexture(); }
63    virtual bool isAccelerated() const OVERRIDE { return m_layerBridge->isAccelerated(); }
64    virtual void setIsHidden(bool hidden) OVERRIDE { m_layerBridge->setIsHidden(hidden); }
65    virtual void setImageBuffer(ImageBuffer* imageBuffer) OVERRIDE { m_layerBridge->setImageBuffer(imageBuffer); }
66
67private:
68    RefPtr<Canvas2DLayerBridge> m_layerBridge;
69};
70
71} // namespace blink
72
73#endif
74