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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(CG)
#include "GraphicsContextCG.h"
#include "SubimageCacheWithTimer.h"
namespace WebCore {
IntSize NativeImage::size() const
{
return IntSize(CGImageGetWidth(m_platformImage.get()), CGImageGetHeight(m_platformImage.get()));
}
bool NativeImage::hasAlpha() const
{
CGImageAlphaInfo info = CGImageGetAlphaInfo(m_platformImage.get());
return (info >= kCGImageAlphaPremultipliedLast) && (info <= kCGImageAlphaFirst);
}
Color NativeImage::singlePixelSolidColor() const
{
if (size() != IntSize(1, 1))
return Color();
unsigned char pixel[4]; // RGBA
auto bitmapContext = adoptCF(CGBitmapContextCreate(pixel, 1, 1, 8, sizeof(pixel), sRGBColorSpaceRef(), static_cast<uint32_t>(kCGImageAlphaPremultipliedLast) | static_cast<uint32_t>(kCGBitmapByteOrder32Big)));
if (!bitmapContext)
return Color();
CGContextSetBlendMode(bitmapContext.get(), kCGBlendModeCopy);
CGContextDrawImage(bitmapContext.get(), CGRectMake(0, 0, 1, 1), m_platformImage.get());
if (!pixel[3])
return Color::transparentBlack;
return makeFromComponentsClampingExceptAlpha<SRGBA<uint8_t>>(pixel[0] * 255 / pixel[3], pixel[1] * 255 / pixel[3], pixel[2] * 255 / pixel[3], pixel[3]);
}
DestinationColorSpace NativeImage::colorSpace() const
{
return DestinationColorSpace(CGImageGetColorSpace(m_platformImage.get()));
}
void NativeImage::clearSubimages()
{
#if CACHE_SUBIMAGES
SubimageCacheWithTimer::clearImage(m_platformImage.get());
#endif
}
}
#endif // USE(CG)