| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dibutils.h |
| 3 | // Purpose: Utilities for DIBs |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Microsoft, Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | /*************************************************************************** |
| 13 | |
| 14 | (C) Copyright 1994 Microsoft Corp. All rights reserved. |
| 15 | |
| 16 | You have a royalty-free right to use, modify, reproduce and |
| 17 | distribute the Sample Files (and/or any modified version) in |
| 18 | any way you find useful, provided that you agree that |
| 19 | Microsoft has no warranty obligations or liability for any |
| 20 | Sample Application Files which are modified. |
| 21 | |
| 22 | **************************************************************************/ |
| 23 | |
| 24 | /*************************************************************************** |
| 25 | Functions for handling Device Independent Bitmaps and clearing the |
| 26 | System Palette. |
| 27 | **************************************************************************/ |
| 28 | |
| 29 | #ifndef SAMPLES_UTILS_H |
| 30 | #define SAMPLES_UTILS_H |
| 31 | |
| 32 | #ifdef __GNUG__ |
| 33 | #pragma interface "dibutils.h" |
| 34 | #endif |
| 35 | |
| 36 | typedef LPBITMAPINFOHEADER PDIB; |
| 37 | typedef HANDLE HDIB; |
| 38 | |
| 39 | /*************************************************************************** |
| 40 | External function declarations |
| 41 | **************************************************************************/ |
| 42 | |
| 43 | void wxClearSystemPalette(void); |
| 44 | PDIB wxDibOpenFile(LPTSTR szFile); |
| 45 | int wxDibWriteFile(LPTSTR szFile, LPBITMAPINFOHEADER lpbi); |
| 46 | BOOL wxDibSetUsage(PDIB pdib, HPALETTE hpal,UINT wUsage); |
| 47 | PDIB wxDibCreate(int bits, int dx, int dy); |
| 48 | BOOL wxDibMapToPalette(PDIB pdib, HPALETTE hpal); |
| 49 | HPALETTE wxMakePalette(const BITMAPINFO FAR* Info, UINT flags); |
| 50 | |
| 51 | /**************************************************************************** |
| 52 | Internal function declarations |
| 53 | ***************************************************************************/ |
| 54 | |
| 55 | PDIB wxDibReadBitmapInfo(HFILE fh); |
| 56 | |
| 57 | /**************************************************************************** |
| 58 | DIB macros. |
| 59 | ***************************************************************************/ |
| 60 | |
| 61 | #ifdef WIN32 |
| 62 | #define wxHandleFromDib(lpbi) GlobalHandle(lpbi) |
| 63 | #else |
| 64 | #define wxHandleFromDib(lpbi) (HANDLE)GlobalHandle(SELECTOROF(lpbi)) |
| 65 | #endif |
| 66 | |
| 67 | #define wxDibFromHandle(h) (PDIB)GlobalLock(h) |
| 68 | |
| 69 | #define wxDibFree(pdib) GlobalFreePtr(pdib) |
| 70 | |
| 71 | #define wxWIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */ |
| 72 | |
| 73 | #define wxDibWidth(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biWidth) |
| 74 | #define wxDibHeight(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biHeight) |
| 75 | #define wxDibBitCount(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biBitCount) |
| 76 | #define wxDibCompression(lpbi) (DWORD)(((LPBITMAPINFOHEADER)(lpbi))->biCompression) |
| 77 | |
| 78 | #define wxDibWidthBytesN(lpbi, n) (UINT)wxWIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(n)) |
| 79 | #define wxDibWidthBytes(lpbi) wxDibWidthBytesN(lpbi, (lpbi)->biBitCount) |
| 80 | |
| 81 | #define wxDibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \ |
| 82 | ? ((DWORD)(UINT)wxDibWidthBytes(lpbi) * (DWORD)(UINT)(lpbi)->biHeight) \ |
| 83 | : (lpbi)->biSizeImage) |
| 84 | |
| 85 | #define wxDibSize(lpbi) ((lpbi)->biSize + (lpbi)->biSizeImage + (int)(lpbi)->biClrUsed * sizeof(RGBQUAD)) |
| 86 | #define wxDibPaletteSize(lpbi) (wxDibNumColors(lpbi) * sizeof(RGBQUAD)) |
| 87 | |
| 88 | #define wxDibFlipY(lpbi, y) ((int)(lpbi)->biHeight-1-(y)) |
| 89 | |
| 90 | //HACK for NT BI_BITFIELDS DIBs |
| 91 | #ifdef WIN32 |
| 92 | #define wxDibPtr(lpbi) ((lpbi)->biCompression == BI_BITFIELDS \ |
| 93 | ? (LPVOID)(wxDibColors(lpbi) + 3) \ |
| 94 | : (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed)) |
| 95 | #else |
| 96 | #define wxDibPtr(lpbi) (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed) |
| 97 | #endif |
| 98 | |
| 99 | #define wxDibColors(lpbi) ((RGBQUAD FAR *)((LPBYTE)(lpbi) + (int)(lpbi)->biSize)) |
| 100 | |
| 101 | #define wxDibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \ |
| 102 | ? (int)(1 << (int)(lpbi)->biBitCount) \ |
| 103 | : (int)(lpbi)->biClrUsed) |
| 104 | |
| 105 | #define wxDibXYN(lpbi,pb,x,y,n) (LPVOID)( \ |
| 106 | (BYTE _huge *)(pb) + \ |
| 107 | (UINT)((UINT)(x) * (UINT)(n) / 8u) + \ |
| 108 | ((DWORD)wxDibWidthBytesN(lpbi,n) * (DWORD)(UINT)(y))) |
| 109 | |
| 110 | #define wxDibXY(lpbi,x,y) wxDibXYN(lpbi,wxDibPtr(lpbi),x,y,(lpbi)->biBitCount) |
| 111 | |
| 112 | #define wxFixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \ |
| 113 | (lpbi)->biSizeImage = wxDibSizeImage(lpbi); \ |
| 114 | if ((lpbi)->biClrUsed == 0) \ |
| 115 | (lpbi)->biClrUsed = wxDibNumColors(lpbi); |
| 116 | |
| 117 | // if ((lpbi)->biCompression == BI_BITFIELDS && (lpbi)->biClrUsed == 0) |
| 118 | // ; // (lpbi)->biClrUsed = 3; |
| 119 | |
| 120 | #define wxDibInfo(pDIB) ((BITMAPINFO FAR *)(pDIB)) |
| 121 | |
| 122 | /***************************************************************************/ |
| 123 | |
| 124 | #ifndef BI_BITFIELDS |
| 125 | #define BI_BITFIELDS 3 |
| 126 | #endif |
| 127 | |
| 128 | #ifndef HALFTONE |
| 129 | #define HALFTONE COLORONCOLOR |
| 130 | #endif |
| 131 | |
| 132 | #endif |