/* * 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(), kCGImageAlphaPremultipliedLast | 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 clampToComponentBytes<SRGBA>(pixel[0] * 255 / pixel[3], pixel[1] * 255 / pixel[3], pixel[2] * 255 / pixel[3], pixel[3]); } void NativeImage::clearSubimages() { #if CACHE_SUBIMAGES SubimageCacheWithTimer::clearImage(m_platformImage.get()); #endif } } #endif // USE(CG)