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