| | 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 ClearSystemPalette(void); |
| | 44 | PDIB DibOpenFile(LPTSTR szFile); |
| | 45 | int DibWriteFile(LPTSTR szFile, LPBITMAPINFOHEADER lpbi); |
| | 46 | BOOL DibSetUsage(PDIB pdib, HPALETTE hpal,UINT wUsage); |
| | 47 | PDIB DibCreate(int bits, int dx, int dy); |
| | 48 | BOOL DibMapToPalette(PDIB pdib, HPALETTE hpal); |
| | 49 | HPALETTE MakePalette(const BITMAPINFO FAR* Info, UINT flags); |
| | 50 | |
| | 51 | /**************************************************************************** |
| | 52 | Internal function declarations |
| | 53 | ***************************************************************************/ |
| | 54 | |
| | 55 | PDIB DibReadBitmapInfo(HFILE fh); |
| | 56 | |
| | 57 | /**************************************************************************** |
| | 58 | DIB macros. |
| | 59 | ***************************************************************************/ |
| | 60 | |
| | 61 | #ifdef WIN32 |
| | 62 | #define HandleFromDib(lpbi) GlobalHandle(lpbi) |
| | 63 | #else |
| | 64 | #define HandleFromDib(lpbi) (HANDLE)GlobalHandle(SELECTOROF(lpbi)) |
| | 65 | #endif |
| | 66 | |
| | 67 | #define DibFromHandle(h) (PDIB)GlobalLock(h) |
| | 68 | |
| | 69 | #define DibFree(pdib) GlobalFreePtr(pdib) |
| | 70 | |
| | 71 | #define WIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */ |
| | 72 | |
| | 73 | #define DibWidth(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biWidth) |
| | 74 | #define DibHeight(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biHeight) |
| | 75 | #define DibBitCount(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biBitCount) |
| | 76 | #define DibCompression(lpbi) (DWORD)(((LPBITMAPINFOHEADER)(lpbi))->biCompression) |
| | 77 | |
| | 78 | #define DibWidthBytesN(lpbi, n) (UINT)WIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(n)) |
| | 79 | #define DibWidthBytes(lpbi) DibWidthBytesN(lpbi, (lpbi)->biBitCount) |
| | 80 | |
| | 81 | #define DibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \ |
| | 82 | ? ((DWORD)(UINT)DibWidthBytes(lpbi) * (DWORD)(UINT)(lpbi)->biHeight) \ |
| | 83 | : (lpbi)->biSizeImage) |
| | 84 | |
| | 85 | #define DibSize(lpbi) ((lpbi)->biSize + (lpbi)->biSizeImage + (int)(lpbi)->biClrUsed * sizeof(RGBQUAD)) |
| | 86 | #define DibPaletteSize(lpbi) (DibNumColors(lpbi) * sizeof(RGBQUAD)) |
| | 87 | |
| | 88 | #define DibFlipY(lpbi, y) ((int)(lpbi)->biHeight-1-(y)) |
| | 89 | |
| | 90 | //HACK for NT BI_BITFIELDS DIBs |
| | 91 | #ifdef WIN32 |
| | 92 | #define DibPtr(lpbi) ((lpbi)->biCompression == BI_BITFIELDS \ |
| | 93 | ? (LPVOID)(DibColors(lpbi) + 3) \ |
| | 94 | : (LPVOID)(DibColors(lpbi) + (UINT)(lpbi)->biClrUsed)) |
| | 95 | #else |
| | 96 | #define DibPtr(lpbi) (LPVOID)(DibColors(lpbi) + (UINT)(lpbi)->biClrUsed) |
| | 97 | #endif |
| | 98 | |
| | 99 | #define DibColors(lpbi) ((RGBQUAD FAR *)((LPBYTE)(lpbi) + (int)(lpbi)->biSize)) |
| | 100 | |
| | 101 | #define DibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \ |
| | 102 | ? (int)(1 << (int)(lpbi)->biBitCount) \ |
| | 103 | : (int)(lpbi)->biClrUsed) |
| | 104 | |
| | 105 | #define DibXYN(lpbi,pb,x,y,n) (LPVOID)( \ |
| | 106 | (BYTE _huge *)(pb) + \ |
| | 107 | (UINT)((UINT)(x) * (UINT)(n) / 8u) + \ |
| | 108 | ((DWORD)DibWidthBytesN(lpbi,n) * (DWORD)(UINT)(y))) |
| | 109 | |
| | 110 | #define DibXY(lpbi,x,y) DibXYN(lpbi,DibPtr(lpbi),x,y,(lpbi)->biBitCount) |
| | 111 | |
| | 112 | #define FixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \ |
| | 113 | (lpbi)->biSizeImage = DibSizeImage(lpbi); \ |
| | 114 | if ((lpbi)->biClrUsed == 0) \ |
| | 115 | (lpbi)->biClrUsed = DibNumColors(lpbi); |
| | 116 | |
| | 117 | // if ((lpbi)->biCompression == BI_BITFIELDS && (lpbi)->biClrUsed == 0) |
| | 118 | // ; // (lpbi)->biClrUsed = 3; |
| | 119 | |
| | 120 | #define DibInfo(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 |
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