165f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch/* 265f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * Copyright (C) 2011 Apple Inc. All rights reserved. 365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * 465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * Redistribution and use in source and binary forms, with or without 565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * modification, are permitted provided that the following conditions 665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * are met: 765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * 1. Redistributions of source code must retain the above copyright 865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * notice, this list of conditions and the following disclaimer. 965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * 2. Redistributions in binary form must reproduce the above copyright 1065f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * notice, this list of conditions and the following disclaimer in the 1165f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * documentation and/or other materials provided with the distribution. 1265f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * 1365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 1465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 1565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 1665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 1765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 1865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 1965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2065f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2165f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2265f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 2365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch * THE POSSIBILITY OF SUCH DAMAGE. 2465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch */ 2565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 262fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "config.h" 2765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#include "CGUtilities.h" 2865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 2965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#include <wtf/RetainPtr.h> 3065f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 3165f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdochnamespace WebKit { 3265f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 332bde8e466a4451c7319e3a072d118917957d6554Steve Blockvoid paintImage(CGContextRef context, CGImageRef image, CGPoint destination, CGRect source) 342bde8e466a4451c7319e3a072d118917957d6554Steve Block{ 3565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGContextSaveGState(context); 3665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 3765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGContextClipToRect(context, CGRectMake(destination.x, destination.y, source.size.width, source.size.height)); 3865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGContextScaleCTM(context, 1, -1); 3965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 402bde8e466a4451c7319e3a072d118917957d6554Steve Block size_t imageHeight = CGImageGetHeight(image); 412bde8e466a4451c7319e3a072d118917957d6554Steve Block size_t imageWidth = CGImageGetWidth(image); 422bde8e466a4451c7319e3a072d118917957d6554Steve Block 4365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGFloat destX = destination.x - source.origin.x; 4465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGFloat destY = -static_cast<CGFloat>(imageHeight) - destination.y + source.origin.y; 4565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 462bde8e466a4451c7319e3a072d118917957d6554Steve Block CGContextDrawImage(context, CGRectMake(destX, destY, imageWidth, imageHeight), image); 4765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch CGContextRestoreGState(context); 4865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} 492bde8e466a4451c7319e3a072d118917957d6554Steve Block 502bde8e466a4451c7319e3a072d118917957d6554Steve Blockvoid paintBitmapContext(CGContextRef context, CGContextRef bitmapContext, CGPoint destination, CGRect source) 512bde8e466a4451c7319e3a072d118917957d6554Steve Block{ 522bde8e466a4451c7319e3a072d118917957d6554Steve Block RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(bitmapContext)); 532bde8e466a4451c7319e3a072d118917957d6554Steve Block paintImage(context, image.get(), destination, source); 542bde8e466a4451c7319e3a072d118917957d6554Steve Block} 552bde8e466a4451c7319e3a072d118917957d6554Steve Block 5665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} // namespace WebKit 5765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 58