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121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL
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* FILE: base/applications/mspaint/dib.cpp
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* PURPOSE: Some DIB related functions
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* PROGRAMMERS: Benedikt Freisen
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*/
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/* INCLUDES *********************************************************/
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#include "precomp.h"
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/* FUNCTIONS ********************************************************/
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HBITMAP
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CreateDIBWithProperties(int width, int height)
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{
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BITMAPINFO bmi;
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ZeroMemory(&bmi, sizeof(BITMAPINFO));
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bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bmi.bmiHeader.biWidth = width;
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bmi.bmiHeader.biHeight = height;
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = 24;
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bmi.bmiHeader.biCompression = BI_RGB;
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return CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, NULL, NULL, 0);
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}
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int
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GetDIBWidth(HBITMAP hBitmap)
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{
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BITMAP bm;
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GetObject(hBitmap, sizeof(BITMAP), &bm);
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return bm.bmWidth;
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}
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int
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GetDIBHeight(HBITMAP hBitmap)
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{
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BITMAP bm;
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GetObject(hBitmap, sizeof(BITMAP), &bm);
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return bm.bmHeight;
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}
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void
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SaveDIBToFile(HBITMAP hBitmap, LPTSTR FileName, HDC hDC, LPSYSTEMTIME time, int *size, int hRes, int vRes)
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{
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CImage img;
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img.Attach(hBitmap);
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img.Save(FileName); // TODO: error handling
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img.Detach();
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// update time and size
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HANDLE hFile =
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CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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return;
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if (time)
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{
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FILETIME ft;
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GetFileTime(hFile, NULL, NULL, &ft);
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FileTimeToSystemTime(&ft, time);
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}
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if (size)
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*size = GetFileSize(hFile, NULL);
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// TODO: update hRes and vRes
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CloseHandle(hFile);
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}
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void ShowFileLoadError(LPCTSTR name)
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{
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CString strText;
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strText.Format(IDS_LOADERRORTEXT, (LPCTSTR) name);
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CString strProgramName;
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strProgramName.LoadString(IDS_PROGRAMNAME);
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mainWindow.MessageBox(strText, strProgramName, MB_OK | MB_ICONEXCLAMATION);
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}
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void
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LoadDIBFromFile(HBITMAP * hBitmap, LPCTSTR name, LPSYSTEMTIME time, int *size, int *hRes, int *vRes)
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{
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using namespace Gdiplus;
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Bitmap img(CStringW(name), FALSE); // always use WCHAR string
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if (!hBitmap)
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{
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ShowFileLoadError(name);
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return;
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}
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img.GetHBITMAP(Color(255, 255, 255), hBitmap);
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// update time and size
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HANDLE hFile =
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CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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{
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ShowFileLoadError(name);
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return;
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}
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if (time)
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{
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FILETIME ft;
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GetFileTime(hFile, NULL, NULL, &ft);
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FileTimeToSystemTime(&ft, time);
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}
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if (size)
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*size = GetFileSize(hFile, NULL);
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// update hRes and vRes
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*hRes = (int) (img.GetHorizontalResolution() * 1000 / 25.4);
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*vRes = (int) (img.GetVerticalResolution() * 1000 / 25.4);
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CloseHandle(hFile);
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}
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