Source/WebCore/platform/graphics/cairo/ImageBufferCairoSurfaceBackend.h

/*
 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2007 Holger Hans Peter Freyther <zecke@selfish.org>
 * Copyright (C) 2008, 2009 Dirk Schulze <krit@webkit.org>
 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
 * Copyright (C) 2020 Apple 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. ``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
 * 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.
 */

#pragma once

#if USE(CAIRO)

#include "GraphicsContextCairo.h"
#include "ImageBufferCairoBackend.h"

namespace WebCore {

class ImageBufferCairoSurfaceBackend : public ImageBufferCairoBackend {
public:
    GraphicsContext& context() const override;

    IntSize backendSize() const override;

    RefPtr<NativeImage> copyNativeImage(BackingStoreCopy) const override;

    std::optional<PixelBuffer> getPixelBuffer(const PixelBufferFormat& outputFormat, const IntRect&) const override;
    void putPixelBuffer(const PixelBuffer&, const IntRect& srcRect, const IntPoint& destPoint, AlphaPremultiplication destFormat) override;

protected:
    ImageBufferCairoSurfaceBackend(const Parameters&, RefPtr<cairo_surface_t>&&);

    RefPtr<NativeImage> cairoSurfaceCoerceToImage() const;
    unsigned bytesPerRow() const override;

    RefPtr<cairo_surface_t> m_surface;
    mutable GraphicsContextCairo m_context;
};

} // namespace WebCore

#endif // USE(CAIRO)