| [95] | 1 | /*
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| 2 | * File: ximabmp.h
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| 3 | * Purpose: BMP Image Class Loader and Writer
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| 4 | */
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| 5 | /* ==========================================================
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| 6 | * CxImageBMP (c) 07/Aug/2001 Davide Pizzolato - www.xdp.it
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| 7 | * For conditions of distribution and use, see copyright notice in ximage.h
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| 8 | *
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| 9 | * Special thanks to Troels Knakkergaard for new features, enhancements and bugfixes
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| 10 | *
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| 11 | * original CImageBMP and CImageIterator implementation are:
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| 12 | * Copyright: (c) 1995, Alejandro Aguilar Sierra <asierra(at)servidor(dot)unam(dot)mx>
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| 13 | *
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| 14 | * ==========================================================
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| 15 | */
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| 16 |
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| 17 | #if !defined(__ximaBMP_h)
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| 18 | #define __ximaBMP_h
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| 19 |
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| 20 | #include "ximage.h"
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| 21 |
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| 22 | const int RLE_COMMAND = 0;
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| 23 | const int RLE_ENDOFLINE = 0;
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| 24 | const int RLE_ENDOFBITMAP = 1;
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| 25 | const int RLE_DELTA = 2;
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| 26 |
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| 27 | #if !defined(BI_RLE8)
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| 28 | #define BI_RLE8 1L
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| 29 | #endif
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| 30 | #if !defined(BI_RLE4)
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| 31 | #define BI_RLE4 2L
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| 32 | #endif
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| 33 |
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| 34 | #if CXIMAGE_SUPPORT_BMP
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| 35 |
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| 36 | class CxImageBMP: public CxImage
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| 37 | {
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| 38 | public:
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| 39 | CxImageBMP(): CxImage(CXIMAGE_FORMAT_BMP) {};
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| 40 |
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| 41 | bool Decode(CxFile * hFile);
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| 42 | bool Decode(FILE *hFile) { CxIOFile file(hFile); return Decode(&file); }
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| 43 |
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| 44 | #if CXIMAGE_SUPPORT_ENCODE
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| 45 | bool Encode(CxFile * hFile);
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| 46 | bool Encode(FILE *hFile) { CxIOFile file(hFile); return Encode(&file); }
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| 47 | #endif // CXIMAGE_SUPPORT_ENCODE
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| 48 |
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| 49 | protected:
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| 50 | bool DibReadBitmapInfo(CxFile* fh, BITMAPINFOHEADER *pdib);
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| 51 | };
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| 52 |
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| 53 | #define BFT_ICON 0x4349 /* 'IC' */
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| 54 | #define BFT_BITMAP 0x4d42 /* 'BM' */
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| 55 | #define BFT_CURSOR 0x5450 /* 'PT' */
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| 56 |
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| 57 | #ifndef WIDTHBYTES
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| 58 | #define WIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */
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| 59 | #endif
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| 60 |
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| 61 | #endif
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| 62 |
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| 63 | #define DibWidthBytesN(lpbi, n) (UINT)WIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(n))
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| 64 | #define DibWidthBytes(lpbi) DibWidthBytesN(lpbi, (lpbi)->biBitCount)
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| 65 |
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| 66 | #define DibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \
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| 67 | ? ((DWORD)(UINT)DibWidthBytes(lpbi) * (DWORD)(UINT)(lpbi)->biHeight) \
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| 68 | : (lpbi)->biSizeImage)
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| 69 |
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| 70 | #define DibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \
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| 71 | ? (int)(1 << (int)(lpbi)->biBitCount) \
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| 72 | : (int)(lpbi)->biClrUsed)
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| 73 |
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| 74 | #define FixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \
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| 75 | (lpbi)->biSizeImage = DibSizeImage(lpbi); \
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| 76 | if ((lpbi)->biClrUsed == 0) \
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| 77 | (lpbi)->biClrUsed = DibNumColors(lpbi); \
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| 78 |
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| 79 | #endif
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