///////////////////////////////////////////////////////////////////////////// // Name: dibutils.h // Purpose: Utilities for DIBs // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ // Copyright: (c) Microsoft, Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _DIBUTILS_H #define _DIBUTILS_H #ifdef __GNUG__ #pragma interface "dibutils.h" #endif typedef LPBITMAPINFOHEADER PDIB; typedef HANDLE HDIB; /*************************************************************************** External function declarations **************************************************************************/ PDIB wxDibOpenFile(LPTSTR szFile); int wxDibWriteFile(LPTSTR szFile, LPBITMAPINFOHEADER lpbi); BOOL wxDibSetUsage(PDIB pdib, HPALETTE hpal,UINT wUsage); PDIB wxDibCreate(int bits, int dx, int dy); BOOL wxDibMapToPalette(PDIB pdib, HPALETTE hpal); HPALETTE wxMakePalette(const BITMAPINFO FAR* Info, UINT flags); /**************************************************************************** Internal function declarations ***************************************************************************/ PDIB wxDibReadBitmapInfo(HFILE fh); /**************************************************************************** DIB macros. ***************************************************************************/ #ifdef WIN32 #define wxHandleFromDib(lpbi) GlobalHandle(lpbi) #else #define wxHandleFromDib(lpbi) (HANDLE)GlobalHandle(SELECTOROF(lpbi)) #endif #define wxDibFromHandle(h) (PDIB)GlobalLock(h) #define wxDibFree(pdib) GlobalFreePtr(pdib) #define wxWIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */ #define wxDibWidth(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biWidth) #define wxDibHeight(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biHeight) #define wxDibBitCount(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biBitCount) #define wxDibCompression(lpbi) (DWORD)(((LPBITMAPINFOHEADER)(lpbi))->biCompression) #define wxDibWidthBytesN(lpbi, n) (UINT)wxWIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(n)) #define wxDibWidthBytes(lpbi) wxDibWidthBytesN(lpbi, (lpbi)->biBitCount) #define wxDibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \ ? ((DWORD)(UINT)wxDibWidthBytes(lpbi) * (DWORD)(UINT)(lpbi)->biHeight) \ : (lpbi)->biSizeImage) #define wxDibSize(lpbi) ((lpbi)->biSize + (lpbi)->biSizeImage + (int)(lpbi)->biClrUsed * sizeof(RGBQUAD)) #define wxDibPaletteSize(lpbi) (wxDibNumColors(lpbi) * sizeof(RGBQUAD)) #define wxDibFlipY(lpbi, y) ((int)(lpbi)->biHeight-1-(y)) //HACK for NT BI_BITFIELDS DIBs #ifdef __WIN32__ #define wxDibPtr(lpbi) ((lpbi)->biCompression == BI_BITFIELDS \ ? (LPVOID)(wxDibColors(lpbi) + 3) \ : (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed)) #else #define wxDibPtr(lpbi) (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed) #endif #define wxDibColors(lpbi) ((RGBQUAD FAR *)((LPBYTE)(lpbi) + (int)(lpbi)->biSize)) #define wxDibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \ ? (int)(1 << (int)(lpbi)->biBitCount) \ : (int)(lpbi)->biClrUsed) #define wxDibXYN(lpbi,pb,x,y,n) (LPVOID)( \ (BYTE _huge *)(pb) + \ (UINT)((UINT)(x) * (UINT)(n) / 8u) + \ ((DWORD)wxDibWidthBytesN(lpbi,n) * (DWORD)(UINT)(y))) #define wxDibXY(lpbi,x,y) wxDibXYN(lpbi,wxDibPtr(lpbi),x,y,(lpbi)->biBitCount) #define wxFixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \ (lpbi)->biSizeImage = wxDibSizeImage(lpbi); \ if ((lpbi)->biClrUsed == 0) \ (lpbi)->biClrUsed = wxDibNumColors(lpbi); // if ((lpbi)->biCompression == BI_BITFIELDS && (lpbi)->biClrUsed == 0) // ; // (lpbi)->biClrUsed = 3; #define wxDibInfo(pDIB) ((BITMAPINFO FAR *)(pDIB)) /***************************************************************************/ #ifndef BI_BITFIELDS #define BI_BITFIELDS 3 #endif #ifndef HALFTONE #define HALFTONE COLORONCOLOR #endif #endif // _DIBUTILS_H