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/*
* 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,
* 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 ImageBufferSurface_h
#define ImageBufferSurface_h
#include "platform/PlatformExport.h"
#include "platform/geometry/IntSize.h"
#include "platform/graphics/GraphicsTypes.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"
class SkCanvas;
class SkColorSpace;
class SkImage;
struct SkImageInfo;
class SkPicture;
namespace blink {
class ImageBuffer;
class WebLayer;
class FloatRect;
class GraphicsContext;
class PLATFORM_EXPORT ImageBufferSurface {
WTF_MAKE_NONCOPYABLE(ImageBufferSurface);
USING_FAST_MALLOC(ImageBufferSurface);
public:
virtual ~ImageBufferSurface();
virtual SkCanvas* canvas() = 0;
virtual void disableDeferral(DisableDeferralReason) {}
virtual void willOverwriteCanvas() {}
virtual void didDraw(const FloatRect& rect) {}
virtual bool isValid() const = 0;
virtual bool restore() { return false; }
virtual WebLayer* layer() const { return 0; }
virtual bool isAccelerated() const { return false; }
virtual bool isRecording() const { return false; }
virtual bool isExpensiveToPaint() { return false; }
virtual void setFilterQuality(SkFilterQuality) {}
virtual void setIsHidden(bool) {}
virtual void setImageBuffer(ImageBuffer*) {}
virtual sk_sp<SkPicture> getPicture();
virtual void finalizeFrame(const FloatRect& dirtyRect) {}
virtual void draw(GraphicsContext&,
const FloatRect& destRect,
const FloatRect& srcRect,
SkBlendMode);
virtual void setHasExpensiveOp() {}
virtual GLuint getBackingTextureHandleForOverwrite() { return 0; }
// Executes all deferred rendering immediately.
virtual void flush(FlushReason);
// Like flush, but flushes all the way down to the GPU context if the surface
// uses the GPU.
virtual void flushGpu(FlushReason reason) { flush(reason); }
virtual void prepareSurfaceForPaintingIfNeeded() {}
virtual bool writePixels(const SkImageInfo& origInfo,
const void* pixels,
size_t rowBytes,
int x,
int y);
// May return nullptr if the surface is GPU-backed and the GPU context was
// lost.
virtual sk_sp<SkImage> newImageSnapshot(AccelerationHint, SnapshotReason) = 0;
OpacityMode getOpacityMode() const { return m_opacityMode; }
const IntSize& size() const { return m_size; }
const sk_sp<SkColorSpace> colorSpace() const { return m_colorSpace; }
SkColorType colorType() const { return m_colorType; }
void notifyIsValidChanged(bool isValid) const;
protected:
ImageBufferSurface(const IntSize&,
OpacityMode,
sk_sp<SkColorSpace>,
SkColorType);
void clear();
private:
OpacityMode m_opacityMode;
IntSize m_size;
sk_sp<SkColorSpace> m_colorSpace;
SkColorType m_colorType;
};
} // namespace blink
#endif
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