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/*
* Copyright (C) 2016-2020 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 "NativeImage.h"
#if USE(CAIRO)
#include "CairoOperations.h"
#include "CairoUtilities.h"
#include "NotImplemented.h"
#include <cairo.h>
namespace WebCore {
RefPtr<NativeImage> NativeImage::create(Ref<PixelBuffer>&& pixelBuffer, bool premultipliedAlpha)
{
ASSERT(!pixelBuffer->size().isEmpty());
// Convert RGBA to BGRA. BGRA is CAIRO_FORMAT_ARGB32 on little-endian architectures.
size_t totalBytes = pixelBuffer->sizeInBytes();
uint8_t* pixels = pixelBuffer->bytes();
for (size_t i = 0; i < totalBytes; i += 4)
std::swap(pixels[i], pixels[i + 2]);
if (!premultipliedAlpha) {
for (size_t i = 0; i < totalBytes; i += 4) {
pixels[i + 0] = std::min(255, pixels[i + 0] * pixels[i + 3] / 255);
pixels[i + 1] = std::min(255, pixels[i + 1] * pixels[i + 3] / 255);
pixels[i + 2] = std::min(255, pixels[i + 2] * pixels[i + 3] / 255);
}
}
auto imageSize = pixelBuffer->size();
RefPtr<cairo_surface_t> imageSurface = adoptRef(cairo_image_surface_create_for_data(
pixelBuffer->bytes(), CAIRO_FORMAT_ARGB32, imageSize.width(), imageSize.height(), imageSize.width() * 4));
return adoptRef(*new NativeImage(WTFMove(imageSurface), RenderingResourceIdentifier::generate(), WTFMove(pixelBuffer)));
}
NativeImage::NativeImage(PlatformImagePtr&& platformImage, RenderingResourceIdentifier renderingResourceIdentifier, Ref<PixelBuffer>&& pixelBuffer)
: RenderingResource(renderingResourceIdentifier)
, m_platformImage(WTFMove(platformImage))
, m_pixelBuffer(WTFMove(pixelBuffer))
{
}
IntSize NativeImage::size() const
{
return cairoSurfaceSize(m_platformImage.get());
}
bool NativeImage::hasAlpha() const
{
return cairo_surface_get_content(m_platformImage.get()) != CAIRO_CONTENT_COLOR;
}
Color NativeImage::singlePixelSolidColor() const
{
if (size() != IntSize(1, 1))
return Color();
if (cairo_surface_get_type(m_platformImage.get()) != CAIRO_SURFACE_TYPE_IMAGE)
return Color();
unsigned* pixel = reinterpret_cast_ptr<unsigned*>(cairo_image_surface_get_data(m_platformImage.get()));
return unpremultiplied(asSRGBA(PackedColor::ARGB { *pixel }));
}
DestinationColorSpace NativeImage::colorSpace() const
{
notImplemented();
return DestinationColorSpace::SRGB();
}
void NativeImage::draw(GraphicsContext& context, const FloatSize& imageSize, const FloatRect& destinationRect, const FloatRect& sourceRect, const ImagePaintingOptions& options)
{
context.drawNativeImageInternal(*this, imageSize, destinationRect, sourceRect, options);
}
void NativeImage::clearSubimages()
{
}
} // namespace WebCore
#endif // USE(CAIRO)
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