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| 1 /* | |
| 2 * Copyright (C) 2011 Brent Fulgham <bfulgham@webkit.org> | |
| 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 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 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 "DIBPixelData.h" | |
| 28 | |
| 29 namespace WebCore { | |
| 30 | |
| 31 static const WORD bitmapType = 0x4d42; // BMP format | |
| 32 static const WORD bitmapPixelsPerMeter = 2834; // 72 dpi | |
| 33 | |
| 34 DIBPixelData::DIBPixelData(HBITMAP bitmap) | |
| 35 { | |
| 36 initialize(bitmap); | |
| 37 } | |
| 38 | |
| 39 void DIBPixelData::initialize(HBITMAP bitmap) | |
| 40 { | |
| 41 BITMAP bmpInfo; | |
| 42 GetObject(bitmap, sizeof(bmpInfo), &bmpInfo); | |
| 43 | |
| 44 m_bitmapBuffer = reinterpret_cast<UInt8*>(bmpInfo.bmBits); | |
| 45 m_bitmapBufferLength = bmpInfo.bmWidthBytes * bmpInfo.bmHeight; | |
| 46 m_size = IntSize(bmpInfo.bmWidth, bmpInfo.bmHeight); | |
| 47 m_bytesPerRow = bmpInfo.bmWidthBytes; | |
| 48 m_bitsPerPixel = bmpInfo.bmBitsPixel; | |
| 49 } | |
| 50 | |
| 51 #ifndef NDEBUG | |
| 52 void DIBPixelData::writeToFile(LPCWSTR filePath) | |
| 53 { | |
| 54 HANDLE hFile = ::CreateFile(filePath, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FI
LE_ATTRIBUTE_NORMAL, 0); | |
| 55 if (INVALID_HANDLE_VALUE == hFile) | |
| 56 return; | |
| 57 | |
| 58 BITMAPFILEHEADER header; | |
| 59 header.bfType = bitmapType; | |
| 60 header.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); | |
| 61 header.bfReserved1 = 0; | |
| 62 header.bfReserved2 = 0; | |
| 63 header.bfSize = sizeof(BITMAPFILEHEADER); | |
| 64 | |
| 65 BITMAPINFOHEADER info; | |
| 66 info.biSize = sizeof(BITMAPINFOHEADER); | |
| 67 info.biWidth = m_size.width(); | |
| 68 info.biHeight = m_size.height(); | |
| 69 info.biPlanes = 1; | |
| 70 info.biBitCount = m_bitsPerPixel; | |
| 71 info.biCompression = BI_RGB; | |
| 72 info.biSizeImage = bufferLength(); | |
| 73 info.biXPelsPerMeter = bitmapPixelsPerMeter; | |
| 74 info.biYPelsPerMeter = bitmapPixelsPerMeter; | |
| 75 info.biClrUsed = 0; | |
| 76 info.biClrImportant = 0; | |
| 77 | |
| 78 DWORD bytesWritten = 0; | |
| 79 ::WriteFile(hFile, &header, sizeof(header), &bytesWritten, 0); | |
| 80 ::WriteFile(hFile, &info, sizeof(info), &bytesWritten, 0); | |
| 81 ::WriteFile(hFile, buffer(), bufferLength(), &bytesWritten, 0); | |
| 82 | |
| 83 ::CloseHandle(hFile); | |
| 84 } | |
| 85 #endif | |
| 86 | |
| 87 void DIBPixelData::setRGBABitmapAlpha(HDC hdc, const IntRect& dstRect, unsigned
char level) | |
| 88 { | |
| 89 HBITMAP bitmap = static_cast<HBITMAP>(GetCurrentObject(hdc, OBJ_BITMAP)); | |
| 90 DIBPixelData pixelData(bitmap); | |
| 91 ASSERT(pixelData.bitsPerPixel() == 32); | |
| 92 | |
| 93 XFORM trans; | |
| 94 GetWorldTransform(hdc, &trans); | |
| 95 IntSize transformedPosition(trans.eDx, trans.eDy); | |
| 96 IntRect drawRect(dstRect); | |
| 97 drawRect.move(transformedPosition); | |
| 98 | |
| 99 int pixelDataWidth = pixelData.size().width(); | |
| 100 int pixelDataHeight = pixelData.size().height(); | |
| 101 IntRect bitmapRect(0, 0, pixelDataWidth, pixelDataHeight); | |
| 102 drawRect.intersect(bitmapRect); | |
| 103 if (drawRect.isEmpty()) | |
| 104 return; | |
| 105 | |
| 106 RGBQUAD* bytes = reinterpret_cast<RGBQUAD*>(pixelData.buffer()); | |
| 107 bytes += drawRect.y() * pixelDataWidth; | |
| 108 | |
| 109 size_t width = drawRect.width(); | |
| 110 size_t height = drawRect.height(); | |
| 111 int x = drawRect.x(); | |
| 112 for (size_t i = 0; i < height; i++) { | |
| 113 RGBQUAD* p = bytes + x; | |
| 114 for (size_t j = 0; j < width; j++) { | |
| 115 p->rgbReserved = level; | |
| 116 p++; | |
| 117 } | |
| 118 bytes += pixelDataWidth; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 } // namespace WebCore | |
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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