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| 1 /* | |
| 2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "DragImage.h" | |
| 28 | |
| 29 #include "BitmapInfo.h" | |
| 30 #include "CachedImage.h" | |
| 31 #include "GraphicsContextCG.h" | |
| 32 #include "HWndDC.h" | |
| 33 #include "Image.h" | |
| 34 | |
| 35 #include <CoreGraphics/CoreGraphics.h> | |
| 36 #include <wtf/RetainPtr.h> | |
| 37 | |
| 38 #include <windows.h> | |
| 39 | |
| 40 namespace WebCore { | |
| 41 | |
| 42 void deallocContext(CGContextRef target) | |
| 43 { | |
| 44 CGContextRelease(target); | |
| 45 } | |
| 46 | |
| 47 HBITMAP allocImage(HDC dc, IntSize size, CGContextRef *targetRef) | |
| 48 { | |
| 49 BitmapInfo bmpInfo = BitmapInfo::create(size); | |
| 50 | |
| 51 LPVOID bits; | |
| 52 HBITMAP hbmp = CreateDIBSection(dc, &bmpInfo, DIB_RGB_COLORS, &bits, 0, 0); | |
| 53 | |
| 54 if (!targetRef) | |
| 55 return hbmp; | |
| 56 | |
| 57 CGContextRef bitmapContext = CGBitmapContextCreate(bits, bmpInfo.bmiHeader.b
iWidth, bmpInfo.bmiHeader.biHeight, 8, | |
| 58 bmpInfo.bmiHeader.biWidth
* 4, deviceRGBColorSpaceRef(), | |
| 59 kCGBitmapByteOrder32Littl
e | kCGImageAlphaNoneSkipFirst); | |
| 60 if (!bitmapContext) { | |
| 61 DeleteObject(hbmp); | |
| 62 return 0; | |
| 63 } | |
| 64 | |
| 65 *targetRef = bitmapContext; | |
| 66 return hbmp; | |
| 67 } | |
| 68 | |
| 69 static CGContextRef createCgContextFromBitmap(HBITMAP bitmap) | |
| 70 { | |
| 71 BITMAP info; | |
| 72 GetObject(bitmap, sizeof(info), &info); | |
| 73 ASSERT(info.bmBitsPixel == 32); | |
| 74 | |
| 75 CGContextRef bitmapContext = CGBitmapContextCreate(info.bmBits, info.bmWidth
, info.bmHeight, 8, | |
| 76 info.bmWidthBytes, device
RGBColorSpaceRef(), kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst); | |
| 77 return bitmapContext; | |
| 78 } | |
| 79 | |
| 80 DragImageRef scaleDragImage(DragImageRef image, FloatSize scale) | |
| 81 { | |
| 82 // FIXME: due to the way drag images are done on windows we need | |
| 83 // to preprocess the alpha channel <rdar://problem/5015946> | |
| 84 | |
| 85 if (!image) | |
| 86 return 0; | |
| 87 CGContextRef targetContext; | |
| 88 CGContextRef srcContext; | |
| 89 CGImageRef srcImage; | |
| 90 IntSize srcSize = dragImageSize(image); | |
| 91 IntSize dstSize(static_cast<int>(srcSize.width() * scale.width()), static_ca
st<int>(srcSize.height() * scale.height())); | |
| 92 HBITMAP hbmp = 0; | |
| 93 HWndDC dc(0); | |
| 94 HDC dstDC = CreateCompatibleDC(dc); | |
| 95 if (!dstDC) | |
| 96 goto exit; | |
| 97 | |
| 98 hbmp = allocImage(dstDC, dstSize, &targetContext); | |
| 99 if (!hbmp) | |
| 100 goto exit; | |
| 101 | |
| 102 srcContext = createCgContextFromBitmap(image); | |
| 103 srcImage = CGBitmapContextCreateImage(srcContext); | |
| 104 CGRect rect; | |
| 105 rect.origin.x = 0; | |
| 106 rect.origin.y = 0; | |
| 107 rect.size = dstSize; | |
| 108 CGContextDrawImage(targetContext, rect, srcImage); | |
| 109 CGImageRelease(srcImage); | |
| 110 CGContextRelease(srcContext); | |
| 111 CGContextRelease(targetContext); | |
| 112 ::DeleteObject(image); | |
| 113 image = 0; | |
| 114 | |
| 115 exit: | |
| 116 if (!hbmp) | |
| 117 hbmp = image; | |
| 118 if (dstDC) | |
| 119 DeleteDC(dstDC); | |
| 120 return hbmp; | |
| 121 } | |
| 122 | |
| 123 DragImageRef createDragImageFromImage(Image* img, RespectImageOrientationEnum) | |
| 124 { | |
| 125 HBITMAP hbmp = 0; | |
| 126 HWndDC dc(0); | |
| 127 HDC workingDC = CreateCompatibleDC(dc); | |
| 128 CGContextRef drawContext = 0; | |
| 129 if (!workingDC) | |
| 130 goto exit; | |
| 131 | |
| 132 hbmp = allocImage(workingDC, img->size(), &drawContext); | |
| 133 | |
| 134 if (!hbmp) | |
| 135 goto exit; | |
| 136 | |
| 137 if (!drawContext) { | |
| 138 ::DeleteObject(hbmp); | |
| 139 hbmp = 0; | |
| 140 } | |
| 141 | |
| 142 CGImageRef srcImage = img->getCGImageRef(); | |
| 143 CGRect rect; | |
| 144 rect.size = img->size(); | |
| 145 rect.origin.x = 0; | |
| 146 rect.origin.y = -rect.size.height; | |
| 147 static const CGFloat white [] = {1.0, 1.0, 1.0, 1.0}; | |
| 148 CGContextScaleCTM(drawContext, 1, -1); | |
| 149 CGContextSetFillColor(drawContext, white); | |
| 150 CGContextFillRect(drawContext, rect); | |
| 151 if (srcImage) { | |
| 152 CGContextSetBlendMode(drawContext, kCGBlendModeNormal); | |
| 153 CGContextDrawImage(drawContext, rect, srcImage); | |
| 154 } | |
| 155 CGContextRelease(drawContext); | |
| 156 | |
| 157 exit: | |
| 158 if (workingDC) | |
| 159 DeleteDC(workingDC); | |
| 160 return hbmp; | |
| 161 } | |
| 162 | |
| 163 } | |
| OLD | NEW |
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Chromium Code Reviews
Issue 13642009:
WebCore: Remove PLATFORM(WIN) files we do not use. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk