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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: dibutils.cpp | |
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 and Markus Holzem | |
3f4a0c5b | 9 | // Licence: wxWindows license |
2bda0e17 KB |
10 | ///////////////////////////////////////////////////////////////////////////// |
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "dibutils.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __BORLANDC__ | |
20 | #pragma hdrstop | |
21 | #endif | |
22 | ||
23 | #ifndef WX_PRECOMP | |
2bda0e17 KB |
24 | #include "wx/setup.h" |
25 | #include "wx/defs.h" | |
2662e49e | 26 | #include "wx/string.h" |
2bda0e17 KB |
27 | #endif |
28 | ||
29 | #include <windows.h> | |
30 | #include <windowsx.h> | |
31 | #include <stdio.h> | |
3f4a0c5b VZ |
32 | |
33 | #include "wx/msw/dibutils.h" | |
2bda0e17 | 34 | |
c455ab93 RR |
35 | #ifdef __WXWINE__ |
36 | #include <module.h> | |
37 | #endif | |
38 | ||
2bda0e17 | 39 | #if defined(__WIN32__) |
ce3ed50d | 40 | #if !defined(__MWERKS__) && !defined(__SALFORDC__) |
2bda0e17 | 41 | #include <memory.h> // for _fmemcpy() |
17dff81c | 42 | #endif |
3f4a0c5b | 43 | #define _huge |
2bda0e17 KB |
44 | #ifndef hmemcpy |
45 | #define hmemcpy memcpy | |
46 | #endif | |
47 | #endif | |
48 | ||
49 | #define BFT_ICON 0x4349 /* 'IC' */ | |
50 | #define BFT_BITMAP 0x4d42 /* 'BM' */ | |
e90c1d2a | 51 | #define BFT_CURSOR 0x5450 /* 'PT(' */ |
2bda0e17 | 52 | |
2662e49e | 53 | #ifndef SEEK_CUR |
2bda0e17 KB |
54 | /* flags for _lseek */ |
55 | #define SEEK_CUR 1 | |
56 | #define SEEK_END 2 | |
57 | #define SEEK_SET 0 | |
2662e49e RR |
58 | #endif |
59 | ||
60 | /* Copied from PNGhandler for coompilation with MingW32, RR */ | |
61 | ||
62 | #ifndef GlobalAllocPtr | |
63 | #define GlobalPtrHandle(lp) \ | |
64 | ((HGLOBAL)GlobalHandle(lp)) | |
65 | ||
66 | #define GlobalLockPtr(lp) \ | |
67 | ((BOOL)GlobalLock(GlobalPtrHandle(lp))) | |
68 | #define GlobalUnlockPtr(lp) \ | |
69 | GlobalUnlock(GlobalPtrHandle(lp)) | |
70 | ||
71 | #define GlobalAllocPtr(flags, cb) \ | |
72 | (GlobalLock(GlobalAlloc((flags), (cb)))) | |
73 | #define GlobalReAllocPtr(lp, cbNew, flags) \ | |
74 | (GlobalUnlockPtr(lp), GlobalLock(GlobalReAlloc(GlobalPtrHandle(lp) , (cbNew), (flags)))) | |
75 | #define GlobalFreePtr(lp) \ | |
76 | (GlobalUnlockPtr(lp), (BOOL)GlobalFree(GlobalPtrHandle(lp))) | |
77 | #endif | |
2bda0e17 KB |
78 | |
79 | ||
80 | /* | |
a0c3c734 | 81 | * Clear the System Palette so that we can ensure an identity palette |
2bda0e17 KB |
82 | * mapping for fast performance. |
83 | */ | |
84 | ||
ef3ab009 | 85 | void wxClearSystemPalette(void) |
2bda0e17 KB |
86 | { |
87 | //*** A dummy palette setup | |
88 | struct | |
89 | { | |
90 | WORD Version; | |
91 | WORD NumberOfEntries; | |
92 | PALETTEENTRY aEntries[256]; | |
93 | } Palette = | |
94 | { | |
95 | 0x300, | |
96 | 256 | |
97 | }; | |
98 | ||
99 | HPALETTE ScreenPalette = 0; | |
100 | HDC ScreenDC; | |
101 | int Counter; | |
102 | UINT nMapped = 0; | |
103 | BOOL bOK = FALSE; | |
104 | int nOK = 0; | |
a0c3c734 | 105 | |
c455ab93 | 106 | // *** Reset everything in the system palette to black |
2bda0e17 KB |
107 | for(Counter = 0; Counter < 256; Counter++) |
108 | { | |
109 | Palette.aEntries[Counter].peRed = 0; | |
3f4a0c5b | 110 | Palette.aEntries[Counter].peGreen = 0; |
2bda0e17 KB |
111 | Palette.aEntries[Counter].peBlue = 0; |
112 | Palette.aEntries[Counter].peFlags = PC_NOCOLLAPSE; | |
113 | } | |
114 | ||
c455ab93 RR |
115 | // *** Create, select, realize, deselect, and delete the palette |
116 | #ifdef __WXWINE__ | |
117 | ScreenDC = GetDC((HWND)NULL); | |
118 | #else | |
2bda0e17 | 119 | ScreenDC = GetDC(NULL); |
c455ab93 | 120 | #endif |
2bda0e17 KB |
121 | ScreenPalette = CreatePalette((LOGPALETTE *)&Palette); |
122 | ||
123 | if (ScreenPalette) | |
124 | { | |
3f4a0c5b VZ |
125 | ScreenPalette = SelectPalette(ScreenDC,ScreenPalette,FALSE); |
126 | nMapped = RealizePalette(ScreenDC); | |
2bda0e17 KB |
127 | ScreenPalette = SelectPalette(ScreenDC,ScreenPalette,FALSE); |
128 | bOK = DeleteObject(ScreenPalette); | |
129 | } | |
130 | ||
c455ab93 RR |
131 | #ifdef __WXWINE__ |
132 | nOK = ReleaseDC((HWND)NULL, ScreenDC); | |
133 | #else | |
2bda0e17 | 134 | nOK = ReleaseDC(NULL, ScreenDC); |
c455ab93 | 135 | #endif |
2bda0e17 KB |
136 | |
137 | return; | |
138 | } | |
139 | ||
140 | ||
141 | /* | |
142 | * Open a DIB file and return a MEMORY DIB, a memory handle containing.. | |
143 | * | |
144 | * BITMAP INFO bi | |
145 | * palette data | |
146 | * bits.... | |
147 | */ | |
148 | ||
ef3ab009 | 149 | int wxDibWriteFile(LPTSTR szFile, LPBITMAPINFOHEADER lpbi) |
2bda0e17 | 150 | { |
3f4a0c5b VZ |
151 | HFILE fh; |
152 | OFSTRUCT of; | |
2bda0e17 | 153 | |
837e5743 | 154 | fh = OpenFile(wxConvFile.cWX2MB(szFile), &of, OF_WRITE | OF_CREATE); |
2bda0e17 KB |
155 | |
156 | if (!fh) { | |
3f4a0c5b VZ |
157 | // printf("la regamos0"); |
158 | return 0; | |
2bda0e17 KB |
159 | } |
160 | ||
ef3ab009 | 161 | long size = wxDibSize(lpbi); |
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162 | |
163 | // write file header | |
164 | BITMAPFILEHEADER bmf; | |
a0c3c734 | 165 | bmf.bfType = BFT_BITMAP; |
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166 | bmf.bfSize = sizeof(bmf) + size; |
167 | bmf.bfReserved1 = 0; | |
168 | bmf.bfReserved2 = 0; | |
ef3ab009 | 169 | bmf.bfOffBits = sizeof(bmf) + (char FAR*)(wxDibPtr(lpbi)) - (char FAR*)lpbi; |
b64f0a5f | 170 | #if 1 // defined( __WATCOMC__) || defined(__VISUALC__) || defined(__SC__) || defined(__SALFORDC__) || defined(__MWERKS__) || wxUSE_NORLANDER_HEADERS |
a0c3c734 VZ |
171 | #define HWRITE_2ND_ARG_TYPE LPCSTR |
172 | #else // don't know who needs this... | |
173 | #define HWRITE_2ND_ARG_TYPE LPBYTE | |
174 | #endif | |
175 | ||
176 | if ( _hwrite(fh, (HWRITE_2ND_ARG_TYPE)(&bmf), sizeof(bmf)) < 0 || | |
177 | _hwrite(fh, (HWRITE_2ND_ARG_TYPE)lpbi, size) < 0 ) | |
178 | { | |
3f4a0c5b | 179 | _lclose(fh); |
3f4a0c5b | 180 | return 0; |
2bda0e17 | 181 | } |
a0c3c734 VZ |
182 | |
183 | #undef HWRITE_2ND_ARG_TYPE | |
2bda0e17 KB |
184 | |
185 | _lclose(fh); | |
186 | return 1; | |
187 | } | |
188 | ||
ef3ab009 | 189 | PDIB wxDibOpenFile(LPTSTR szFile) |
2bda0e17 | 190 | { |
3f4a0c5b VZ |
191 | HFILE fh; |
192 | DWORD dwLen; | |
193 | DWORD dwBits; | |
194 | PDIB pdib; | |
195 | LPVOID p; | |
196 | OFSTRUCT of; | |
2bda0e17 KB |
197 | |
198 | #if defined(WIN32) || defined(_WIN32) | |
3f4a0c5b | 199 | #define GetCurrentInstance() GetModuleHandle(NULL) |
2bda0e17 | 200 | #else |
3f4a0c5b | 201 | #define GetCurrentInstance() (HINSTANCE)SELECTOROF((LPVOID)&of) |
2bda0e17 KB |
202 | #endif |
203 | ||
837e5743 | 204 | fh = OpenFile(wxConvFile.cWX2MB(szFile), &of, OF_READ); |
2bda0e17 | 205 | |
3f4a0c5b VZ |
206 | if (fh == -1) |
207 | { | |
208 | HRSRC h; | |
2bda0e17 KB |
209 | |
210 | // TODO: Unicode version | |
62448488 | 211 | #ifdef __WIN16__ |
3f4a0c5b | 212 | h = FindResource(GetCurrentInstance(), szFile, RT_BITMAP); |
837e5743 OK |
213 | #elif wxUSE_UNICODE |
214 | h = FindResourceW(GetCurrentInstance(), szFile, RT_BITMAP); | |
62448488 | 215 | #else |
3f4a0c5b | 216 | h = FindResourceA(GetCurrentInstance(), szFile, RT_BITMAP); |
62448488 | 217 | #endif |
2bda0e17 | 218 | |
62448488 | 219 | #if defined(__WIN32__) |
3f4a0c5b VZ |
220 | //!!! can we call GlobalFree() on this? is it the right format. |
221 | //!!! can we write to this resource? | |
222 | if (h) | |
223 | return (PDIB)LockResource(LoadResource(GetCurrentInstance(), h)); | |
2bda0e17 | 224 | #else |
3f4a0c5b VZ |
225 | if (h) |
226 | fh = AccessResource(GetCurrentInstance(), h); | |
2bda0e17 | 227 | #endif |
3f4a0c5b | 228 | } |
2bda0e17 | 229 | |
3f4a0c5b VZ |
230 | if (fh == -1) |
231 | return NULL; | |
2bda0e17 | 232 | |
ef3ab009 | 233 | pdib = wxDibReadBitmapInfo(fh); |
2bda0e17 | 234 | |
3f4a0c5b VZ |
235 | if (!pdib) |
236 | return NULL; | |
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237 | |
238 | /* How much memory do we need to hold the DIB */ | |
239 | ||
240 | dwBits = pdib->biSizeImage; | |
ef3ab009 | 241 | dwLen = pdib->biSize + wxDibPaletteSize(pdib) + dwBits; |
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242 | |
243 | /* Can we get more memory? */ | |
244 | ||
3f4a0c5b | 245 | p = GlobalReAllocPtr(pdib,dwLen,0); |
2bda0e17 KB |
246 | |
247 | if (!p) | |
248 | { | |
3f4a0c5b | 249 | GlobalFreePtr(pdib); |
2bda0e17 KB |
250 | pdib = NULL; |
251 | } | |
252 | else | |
253 | { | |
254 | pdib = (PDIB)p; | |
255 | } | |
256 | ||
257 | if (pdib) | |
258 | { | |
3f4a0c5b | 259 | /* read in the bits */ |
ef3ab009 | 260 | _hread(fh, (LPBYTE)pdib + (UINT)pdib->biSize + wxDibPaletteSize(pdib), dwBits); |
2bda0e17 KB |
261 | } |
262 | ||
263 | _lclose(fh); | |
264 | ||
265 | return pdib; | |
266 | } | |
267 | ||
268 | ||
269 | /* | |
270 | * ReadDibBitmapInfo() | |
271 | * | |
272 | * Will read a file in DIB format and return a global HANDLE to its | |
273 | * BITMAPINFO. This function will work with both "old" and "new" | |
274 | * bitmap formats, but will always return a "new" BITMAPINFO. | |
275 | */ | |
276 | ||
ef3ab009 | 277 | PDIB wxDibReadBitmapInfo(HFILE fh) |
2bda0e17 KB |
278 | { |
279 | DWORD off; | |
2bda0e17 KB |
280 | int size; |
281 | int i; | |
282 | int nNumColors; | |
283 | ||
284 | RGBQUAD FAR *pRgb; | |
285 | BITMAPINFOHEADER bi; | |
286 | BITMAPCOREHEADER bc; | |
287 | BITMAPFILEHEADER bf; | |
288 | PDIB pdib; | |
289 | ||
290 | if (fh == -1) | |
291 | return NULL; | |
292 | ||
293 | off = _llseek(fh,0L,SEEK_CUR); | |
294 | ||
295 | if (sizeof(bf) != _lread(fh,(LPSTR)&bf,sizeof(bf))) | |
296 | return FALSE; | |
297 | ||
298 | /* | |
299 | * do we have a RC HEADER? | |
300 | */ | |
301 | if (bf.bfType != BFT_BITMAP) | |
302 | { | |
303 | bf.bfOffBits = 0L; | |
304 | _llseek(fh,off,SEEK_SET); | |
305 | } | |
306 | ||
307 | if (sizeof(bi) != _lread(fh,(LPSTR)&bi,sizeof(bi))) | |
308 | return FALSE; | |
309 | ||
310 | /* | |
311 | * what type of bitmap info is this? | |
312 | */ | |
313 | switch (size = (int)bi.biSize) | |
314 | { | |
315 | default: | |
316 | case sizeof(BITMAPINFOHEADER): | |
317 | break; | |
318 | ||
319 | case sizeof(BITMAPCOREHEADER): | |
320 | bc = *(BITMAPCOREHEADER*)&bi; | |
321 | bi.biSize = sizeof(BITMAPINFOHEADER); | |
322 | bi.biWidth = (DWORD)bc.bcWidth; | |
323 | bi.biHeight = (DWORD)bc.bcHeight; | |
33ac7e6f KB |
324 | bi.biPlanes = (WORD)bc.bcPlanes; |
325 | bi.biBitCount = (WORD)bc.bcBitCount; | |
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326 | bi.biCompression = BI_RGB; |
327 | bi.biSizeImage = 0; | |
328 | bi.biXPelsPerMeter = 0; | |
329 | bi.biYPelsPerMeter = 0; | |
330 | bi.biClrUsed = 0; | |
331 | bi.biClrImportant = 0; | |
332 | ||
333 | _llseek(fh,(LONG)sizeof(BITMAPCOREHEADER)-sizeof(BITMAPINFOHEADER),SEEK_CUR); | |
334 | ||
335 | break; | |
336 | } | |
337 | ||
ef3ab009 | 338 | nNumColors = wxDibNumColors(&bi); |
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339 | |
340 | #if 0 | |
341 | if (bi.biSizeImage == 0) | |
342 | bi.biSizeImage = DibSizeImage(&bi); | |
343 | ||
344 | if (bi.biClrUsed == 0) | |
ef3ab009 | 345 | bi.biClrUsed = wxDibNumColors(&bi); |
2bda0e17 | 346 | #else |
ef3ab009 | 347 | wxFixBitmapInfo(&bi); |
2bda0e17 KB |
348 | #endif |
349 | ||
350 | pdib = (PDIB)GlobalAllocPtr(GMEM_MOVEABLE,(LONG)bi.biSize + nNumColors * sizeof(RGBQUAD)); | |
351 | ||
352 | if (!pdib) | |
353 | return NULL; | |
354 | ||
355 | *pdib = bi; | |
356 | ||
ef3ab009 | 357 | pRgb = wxDibColors(pdib); |
2bda0e17 KB |
358 | |
359 | if (nNumColors) | |
360 | { | |
361 | if (size == sizeof(BITMAPCOREHEADER)) | |
362 | { | |
363 | /* | |
364 | * convert a old color table (3 byte entries) to a new | |
365 | * color table (4 byte entries) | |
366 | */ | |
367 | _lread(fh,(LPVOID)pRgb,nNumColors * sizeof(RGBTRIPLE)); | |
368 | ||
369 | for (i=nNumColors-1; i>=0; i--) | |
370 | { | |
371 | RGBQUAD rgb; | |
372 | ||
373 | rgb.rgbRed = ((RGBTRIPLE FAR *)pRgb)[i].rgbtRed; | |
374 | rgb.rgbBlue = ((RGBTRIPLE FAR *)pRgb)[i].rgbtBlue; | |
375 | rgb.rgbGreen = ((RGBTRIPLE FAR *)pRgb)[i].rgbtGreen; | |
376 | rgb.rgbReserved = (BYTE)0; | |
377 | ||
378 | pRgb[i] = rgb; | |
379 | } | |
380 | } | |
381 | else | |
382 | { | |
383 | _lread(fh,(LPVOID)pRgb,nNumColors * sizeof(RGBQUAD)); | |
384 | } | |
385 | } | |
386 | ||
387 | if (bf.bfOffBits != 0L) | |
388 | _llseek(fh,off + bf.bfOffBits,SEEK_SET); | |
389 | ||
390 | return pdib; | |
391 | } | |
392 | ||
393 | /* | |
394 | * DibSetUsage(hdib,hpal,wUsage) | |
395 | * | |
396 | * Modifies the color table of the passed DIB for use with the wUsage | |
397 | * parameter specifed. | |
398 | * | |
399 | * if wUsage is DIB_PAL_COLORS the DIB color table is set to 0-256 | |
400 | * if wUsage is DIB_RGB_COLORS the DIB color table is set to the RGB values | |
401 | * in the passed palette | |
402 | */ | |
403 | ||
ef3ab009 | 404 | BOOL wxDibSetUsage(PDIB pdib, HPALETTE hpal,UINT wUsage) |
2bda0e17 KB |
405 | { |
406 | PALETTEENTRY ape[256]; | |
407 | RGBQUAD FAR * pRgb; | |
408 | WORD FAR * pw; | |
409 | int nColors; | |
410 | int n; | |
411 | ||
412 | if (hpal == NULL) | |
413 | hpal = (HPALETTE)GetStockObject(DEFAULT_PALETTE); | |
414 | ||
415 | if (!pdib) | |
416 | return FALSE; | |
417 | ||
ef3ab009 | 418 | nColors = wxDibNumColors(pdib); |
a0c3c734 | 419 | |
ef3ab009 | 420 | if (nColors == 3 && wxDibCompression(pdib) == BI_BITFIELDS) |
2bda0e17 KB |
421 | nColors = 0; |
422 | ||
423 | if (nColors > 0) | |
424 | { | |
ef3ab009 | 425 | pRgb = wxDibColors(pdib); |
2bda0e17 KB |
426 | |
427 | switch (wUsage) | |
428 | { | |
429 | // | |
430 | // Set the DIB color table to palette indexes | |
431 | // | |
432 | case DIB_PAL_COLORS: | |
433 | for (pw = (WORD FAR*)pRgb,n=0; n<nColors; n++,pw++) | |
434 | *pw = n; | |
435 | break; | |
436 | ||
437 | // | |
438 | // Set the DIB color table to RGBQUADS | |
439 | // | |
440 | default: | |
441 | case DIB_RGB_COLORS: | |
442 | nColors = (nColors < 256) ? nColors: 256; | |
443 | ||
444 | GetPaletteEntries(hpal,0,nColors,ape); | |
445 | ||
446 | for (n=0; n<nColors; n++) | |
447 | { | |
448 | pRgb[n].rgbRed = ape[n].peRed; | |
449 | pRgb[n].rgbGreen = ape[n].peGreen; | |
450 | pRgb[n].rgbBlue = ape[n].peBlue; | |
451 | pRgb[n].rgbReserved = 0; | |
452 | } | |
453 | break; | |
454 | } | |
455 | } | |
456 | return TRUE; | |
457 | } | |
458 | ||
459 | /* | |
460 | * DibCreate(bits, dx, dy) | |
461 | * | |
462 | * Creates a new packed DIB with the given dimensions and the | |
463 | * given number of bits per pixel | |
464 | */ | |
465 | ||
ef3ab009 | 466 | PDIB wxDibCreate(int bits, int dx, int dy) |
2bda0e17 KB |
467 | { |
468 | LPBITMAPINFOHEADER lpbi ; | |
469 | DWORD dwSizeImage; | |
470 | int i; | |
471 | DWORD FAR *pdw; | |
472 | ||
473 | dwSizeImage = dy*(DWORD)((dx*bits/8+3)&~3); | |
474 | ||
475 | lpbi = (PDIB)GlobalAllocPtr(GHND,sizeof(BITMAPINFOHEADER)+dwSizeImage + 1024); | |
476 | ||
477 | if (lpbi == NULL) | |
478 | return NULL; | |
479 | ||
480 | lpbi->biSize = sizeof(BITMAPINFOHEADER) ; | |
481 | lpbi->biWidth = dx; | |
482 | lpbi->biHeight = dy; | |
483 | lpbi->biPlanes = 1; | |
484 | lpbi->biBitCount = bits ; | |
485 | lpbi->biCompression = BI_RGB ; | |
486 | lpbi->biSizeImage = dwSizeImage; | |
487 | lpbi->biXPelsPerMeter = 0 ; | |
488 | lpbi->biYPelsPerMeter = 0 ; | |
489 | lpbi->biClrUsed = 0 ; | |
490 | lpbi->biClrImportant = 0 ; | |
491 | ||
492 | if (bits == 4) | |
493 | lpbi->biClrUsed = 16; | |
494 | ||
495 | else if (bits == 8) | |
496 | lpbi->biClrUsed = 256; | |
497 | ||
498 | pdw = (DWORD FAR *)((LPBYTE)lpbi+(int)lpbi->biSize); | |
499 | ||
500 | for (i=0; i<(int)lpbi->biClrUsed/16; i++) | |
501 | { | |
502 | *pdw++ = 0x00000000; // 0000 black | |
503 | *pdw++ = 0x00800000; // 0001 dark red | |
504 | *pdw++ = 0x00008000; // 0010 dark green | |
3f4a0c5b | 505 | *pdw++ = 0x00808000; // 0011 mustard |
2bda0e17 KB |
506 | *pdw++ = 0x00000080; // 0100 dark blue |
507 | *pdw++ = 0x00800080; // 0101 purple | |
508 | *pdw++ = 0x00008080; // 0110 dark turquoise | |
509 | *pdw++ = 0x00C0C0C0; // 1000 gray | |
510 | *pdw++ = 0x00808080; // 0111 dark gray | |
511 | *pdw++ = 0x00FF0000; // 1001 red | |
512 | *pdw++ = 0x0000FF00; // 1010 green | |
3f4a0c5b | 513 | *pdw++ = 0x00FFFF00; // 1011 yellow |
2bda0e17 KB |
514 | *pdw++ = 0x000000FF; // 1100 blue |
515 | *pdw++ = 0x00FF00FF; // 1101 pink (magenta) | |
516 | *pdw++ = 0x0000FFFF; // 1110 cyan | |
517 | *pdw++ = 0x00FFFFFF; // 1111 white | |
518 | } | |
519 | ||
520 | return (PDIB)lpbi; | |
521 | } | |
522 | ||
523 | static void xlatClut8(BYTE FAR *pb, DWORD dwSize, BYTE FAR *xlat) | |
524 | { | |
525 | DWORD dw; | |
526 | ||
527 | #ifdef __cplusplus | |
528 | for (dw = 0; dw < dwSize; dw++, ((BYTE _huge *&)pb)++) | |
529 | #else | |
530 | for (dw = 0; dw < dwSize; dw++, ((BYTE _huge *)pb)++) | |
531 | #endif | |
532 | *pb = xlat[*pb]; | |
533 | } | |
534 | ||
535 | static void xlatClut4(BYTE FAR *pb, DWORD dwSize, BYTE FAR *xlat) | |
536 | { | |
537 | DWORD dw; | |
538 | ||
539 | #ifdef __cplusplus | |
540 | for (dw = 0; dw < dwSize; dw++, ((BYTE _huge *&)pb)++) | |
541 | #else | |
542 | for (dw = 0; dw < dwSize; dw++, ((BYTE _huge *)pb)++) | |
543 | #endif | |
544 | *pb = (BYTE)(xlat[*pb & 0x0F] | (xlat[(*pb >> 4) & 0x0F] << 4)); | |
545 | } | |
546 | ||
547 | #define RLE_ESCAPE 0 | |
548 | #define RLE_EOL 0 | |
549 | #define RLE_EOF 1 | |
550 | #define RLE_JMP 2 | |
551 | ||
33ac7e6f | 552 | static void xlatRle8(BYTE FAR *pb, DWORD WXUNUSED(dwSize), BYTE FAR *xlat) |
2bda0e17 KB |
553 | { |
554 | BYTE cnt; | |
555 | BYTE b; | |
556 | BYTE _huge *prle = pb; | |
557 | ||
558 | for(;;) | |
559 | { | |
560 | cnt = *prle++; | |
561 | b = *prle; | |
562 | ||
563 | if (cnt == RLE_ESCAPE) | |
564 | { | |
565 | prle++; | |
566 | ||
567 | switch (b) | |
568 | { | |
569 | case RLE_EOF: | |
570 | return; | |
571 | ||
572 | case RLE_EOL: | |
573 | break; | |
574 | ||
575 | case RLE_JMP: | |
576 | prle++; // skip dX | |
577 | prle++; // skip dY | |
578 | break; | |
579 | ||
580 | default: | |
581 | cnt = b; | |
582 | for (b=0; b<cnt; b++,prle++) | |
583 | *prle = xlat[*prle]; | |
584 | ||
585 | if (cnt & 1) | |
586 | prle++; | |
587 | ||
588 | break; | |
589 | } | |
590 | } | |
591 | else | |
592 | { | |
593 | *prle++ = xlat[b]; | |
594 | } | |
595 | } | |
596 | } | |
597 | ||
33ac7e6f | 598 | static void xlatRle4(BYTE FAR *WXUNUSED(pb), DWORD WXUNUSED(dwSize), BYTE FAR *WXUNUSED(xlat)) |
2bda0e17 KB |
599 | { |
600 | } | |
601 | ||
602 | static void hmemmove(BYTE _huge *d, BYTE _huge *s, LONG len) | |
603 | { | |
604 | d += len-1; | |
605 | s += len-1; | |
606 | ||
607 | while (len--) | |
608 | *d-- = *s--; | |
609 | } | |
610 | ||
611 | /* | |
612 | * DibMapToPalette(pdib, hpal) | |
613 | * | |
614 | * Map the colors of the DIB, using GetNearestPaletteIndex, to | |
615 | * the colors of the given palette. | |
616 | */ | |
617 | ||
ef3ab009 | 618 | BOOL wxDibMapToPalette(PDIB pdib, HPALETTE hpal) |
2bda0e17 | 619 | { |
3f4a0c5b VZ |
620 | LPBITMAPINFOHEADER lpbi; |
621 | PALETTEENTRY pe; | |
622 | int n; | |
623 | int nDibColors; | |
624 | int nPalColors=0; | |
625 | BYTE FAR * lpBits; | |
626 | RGBQUAD FAR * lpRgb; | |
627 | BYTE xlat[256]; | |
628 | DWORD SizeImage; | |
629 | ||
630 | if (!hpal || !pdib) | |
631 | return FALSE; | |
632 | ||
633 | lpbi = (LPBITMAPINFOHEADER)pdib; | |
ef3ab009 | 634 | lpRgb = wxDibColors(pdib); |
3f4a0c5b VZ |
635 | |
636 | GetObject(hpal,sizeof(int),(LPSTR)&nPalColors); | |
ef3ab009 | 637 | nDibColors = wxDibNumColors(pdib); |
3f4a0c5b VZ |
638 | |
639 | if ((SizeImage = lpbi->biSizeImage) == 0) | |
ef3ab009 | 640 | SizeImage = wxDibSizeImage(lpbi); |
3f4a0c5b VZ |
641 | |
642 | // | |
643 | // build a xlat table. from the current DIB colors to the given | |
644 | // palette. | |
645 | // | |
646 | for (n=0; n<nDibColors; n++) | |
647 | xlat[n] = (BYTE)GetNearestPaletteIndex(hpal,RGB(lpRgb[n].rgbRed,lpRgb[n].rgbGreen,lpRgb[n].rgbBlue)); | |
648 | ||
ef3ab009 | 649 | lpBits = (LPBYTE)wxDibPtr(lpbi); |
3f4a0c5b VZ |
650 | lpbi->biClrUsed = nPalColors; |
651 | ||
652 | // | |
653 | // re-size the DIB | |
654 | // | |
655 | if (nPalColors > nDibColors) | |
656 | { | |
657 | GlobalReAllocPtr(lpbi, lpbi->biSize + nPalColors*sizeof(RGBQUAD) + SizeImage, 0); | |
ef3ab009 UJ |
658 | hmemmove((BYTE _huge *)wxDibPtr(lpbi), (BYTE _huge *)lpBits, SizeImage); |
659 | lpBits = (LPBYTE)wxDibPtr(lpbi); | |
3f4a0c5b VZ |
660 | } |
661 | else if (nPalColors < nDibColors) | |
662 | { | |
ef3ab009 | 663 | hmemcpy(wxDibPtr(lpbi), lpBits, SizeImage); |
3f4a0c5b | 664 | GlobalReAllocPtr(lpbi, lpbi->biSize + nPalColors*sizeof(RGBQUAD) + SizeImage, 0); |
ef3ab009 | 665 | lpBits = (LPBYTE)wxDibPtr(lpbi); |
3f4a0c5b VZ |
666 | } |
667 | ||
668 | // | |
669 | // translate the DIB bits | |
670 | // | |
671 | switch (lpbi->biCompression) | |
672 | { | |
673 | case BI_RLE8: | |
674 | xlatRle8(lpBits, SizeImage, xlat); | |
675 | break; | |
676 | ||
677 | case BI_RLE4: | |
678 | xlatRle4(lpBits, SizeImage, xlat); | |
679 | break; | |
2bda0e17 KB |
680 | |
681 | case BI_RGB: | |
3f4a0c5b | 682 | if (lpbi->biBitCount == 8) |
2bda0e17 KB |
683 | xlatClut8(lpBits, SizeImage, xlat); |
684 | else | |
685 | xlatClut4(lpBits, SizeImage, xlat); | |
686 | break; | |
687 | } | |
688 | ||
689 | // | |
690 | // Now copy the RGBs in the logical palette to the dib color table | |
691 | // | |
692 | for (n=0; n<nPalColors; n++) | |
693 | { | |
694 | GetPaletteEntries(hpal,n,1,&pe); | |
695 | ||
696 | lpRgb[n].rgbRed = pe.peRed; | |
3f4a0c5b VZ |
697 | lpRgb[n].rgbGreen = pe.peGreen; |
698 | lpRgb[n].rgbBlue = pe.peBlue; | |
699 | lpRgb[n].rgbReserved = (BYTE)0; | |
700 | } | |
2bda0e17 | 701 | |
3f4a0c5b | 702 | return TRUE; |
2bda0e17 KB |
703 | } |
704 | ||
705 | ||
ef3ab009 | 706 | HPALETTE wxMakePalette(const BITMAPINFO FAR* Info, UINT flags) |
2bda0e17 KB |
707 | { |
708 | HPALETTE hPalette; | |
2662e49e | 709 | const RGBQUAD FAR* rgb = Info->bmiColors; |
2bda0e17 | 710 | |
33ac7e6f | 711 | WORD nColors = (WORD)Info->bmiHeader.biClrUsed; |
2bda0e17 | 712 | if (nColors) { |
3f4a0c5b VZ |
713 | LOGPALETTE* logPal = (LOGPALETTE*) |
714 | new BYTE[sizeof(LOGPALETTE) + (nColors-1)*sizeof(PALETTEENTRY)]; | |
715 | ||
716 | logPal->palVersion = 0x300; // Windows 3.0 version | |
717 | logPal->palNumEntries = nColors; | |
48c12cb1 | 718 | for (WORD n = 0; n < nColors; n++) { |
3f4a0c5b VZ |
719 | logPal->palPalEntry[n].peRed = rgb[n].rgbRed; |
720 | logPal->palPalEntry[n].peGreen = rgb[n].rgbGreen; | |
721 | logPal->palPalEntry[n].peBlue = rgb[n].rgbBlue; | |
722 | logPal->palPalEntry[n].peFlags = (BYTE)flags; | |
723 | } | |
724 | hPalette = ::CreatePalette(logPal); | |
725 | delete logPal; | |
2bda0e17 | 726 | } else |
3f4a0c5b | 727 | hPalette = 0; |
2bda0e17 KB |
728 | |
729 | return hPalette; | |
730 | } | |
731 |