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/*
* 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.
*/
#include "config.h"
#include "ImageBufferCairoSurfaceBackend.h"
#include "BitmapImage.h"
#include "CairoOperations.h"
#include "Color.h"
#include "GraphicsContext.h"
#include "ImageBufferUtilitiesCairo.h"
#include "PixelBuffer.h"
#include <cairo.h>
#if USE(CAIRO)
namespace WebCore {
ImageBufferCairoSurfaceBackend::ImageBufferCairoSurfaceBackend(const Parameters& parameters, RefPtr<cairo_surface_t>&& surface)
: ImageBufferCairoBackend(parameters)
, m_surface(WTFMove(surface))
, m_context(m_surface.get())
{
ASSERT(cairo_surface_status(m_surface.get()) == CAIRO_STATUS_SUCCESS);
}
GraphicsContext& ImageBufferCairoSurfaceBackend::context()
{
return m_context;
}
IntSize ImageBufferCairoSurfaceBackend::backendSize() const
{
return { cairo_image_surface_get_width(m_surface.get()), cairo_image_surface_get_height(m_surface.get()) };
}
unsigned ImageBufferCairoSurfaceBackend::bytesPerRow() const
{
return cairo_image_surface_get_stride(m_surface.get());
}
RefPtr<NativeImage> ImageBufferCairoSurfaceBackend::copyNativeImage(BackingStoreCopy copyBehavior)
{
switch (copyBehavior) {
case CopyBackingStore: {
auto copy = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
cairo_image_surface_get_width(m_surface.get()),
cairo_image_surface_get_height(m_surface.get())));
auto cr = adoptRef(cairo_create(copy.get()));
cairo_set_operator(cr.get(), CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface(cr.get(), m_surface.get(), 0, 0);
cairo_paint(cr.get());
return NativeImage::create(WTFMove(copy));
}
case DontCopyBackingStore:
return NativeImage::create(RefPtr { m_surface.get() });
}
ASSERT_NOT_REACHED();
return nullptr;
}
RefPtr<cairo_surface_t> ImageBufferCairoSurfaceBackend::createCairoSurface()
{
return RefPtr { m_surface.get() };
}
RefPtr<NativeImage> ImageBufferCairoSurfaceBackend::cairoSurfaceCoerceToImage()
{
BackingStoreCopy copyBehavior;
if (cairo_surface_get_type(m_surface.get()) == CAIRO_SURFACE_TYPE_IMAGE && cairo_surface_get_content(m_surface.get()) == CAIRO_CONTENT_COLOR_ALPHA)
copyBehavior = DontCopyBackingStore;
else
copyBehavior = CopyBackingStore;
return copyNativeImage(copyBehavior);
}
void ImageBufferCairoSurfaceBackend::getPixelBuffer(const IntRect& srcRect, PixelBuffer& destination)
{
ImageBufferBackend::getPixelBuffer(srcRect, cairo_image_surface_get_data(m_surface.get()), destination);
}
void ImageBufferCairoSurfaceBackend::putPixelBuffer(const PixelBuffer& pixelBuffer, const IntRect& srcRect, const IntPoint& destPoint, AlphaPremultiplication destFormat)
{
ImageBufferBackend::putPixelBuffer(pixelBuffer, srcRect, destPoint, destFormat, cairo_image_surface_get_data(m_surface.get()));
IntRect srcRectScaled = toBackendCoordinates(srcRect);
IntPoint destPointScaled = toBackendCoordinates(destPoint);
cairo_surface_mark_dirty_rectangle(m_surface.get(), destPointScaled.x(), destPointScaled.y(), srcRectScaled.width(), srcRectScaled.height());
}
String ImageBufferCairoSurfaceBackend::debugDescription() const
{
TextStream stream;
stream << "ImageBufferCairoSurfaceBackend " << this << " " << m_surface.get();
return stream.release();
}
} // namespace WebCore
#endif // USE(CAIRO)
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