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 29namespace WebCore { 30 31static const WORD bitmapType = 0x4d42; // BMP format 32static const WORD bitmapPixelsPerMeter = 2834; // 72 dpi 33 34DIBPixelData::DIBPixelData(HBITMAP bitmap) 35{ 36 initialize(bitmap); 37} 38 39void 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 52void DIBPixelData::writeToFile(LPCWSTR filePath) 53{ 54 HANDLE hFile = ::CreateFile(filePath, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_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} // namespace WebCore 88