]> git.saurik.com Git - wxWidgets.git/blame_incremental - src/common/xpmdecod.cpp
projects / wxWidgets.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
compilation fixes
[wxWidgets.git] / src / common / xpmdecod.cpp
... / ...
CommitLineData
1/////////////////////////////////////////////////////////////////////////////
2// Name: xpmdecod.cpp
3// Purpose: wxXPMDecoder
4// Author: John Cristy, Vaclav Slavik
5// RCS-ID: $Id$
6// Copyright: (c) John Cristy, Vaclav Slavik
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10/*
11
12This file is partially based on source code of ImageMagick by John Cristy. Its
13license is as follows:
14
15%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
16% %
17% %
18% %
19% X X PPPP M M %
20% X X P P MM MM %
21% X PPPP M M M %
22% X X P M M %
23% X X P M M %
24% %
25% %
26% Read/Write ImageMagick Image Format. %
27% %
28% %
29% Software Design %
30% John Cristy %
31% July 1992 %
32% %
33% %
34% Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated %
35% to making software imaging solutions freely available. %
36% %
37% Permission is hereby granted, free of charge, to any person obtaining a %
38% copy of this software and associated documentation files ("ImageMagick"), %
39% to deal in ImageMagick without restriction, including without limitation %
40% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
41% and/or sell copies of ImageMagick, and to permit persons to whom the %
42% ImageMagick is furnished to do so, subject to the following conditions: %
43% %
44% The above copyright notice and this permission notice shall be included in %
45% all copies or substantial portions of ImageMagick. %
46% %
47% The software is provided "as is", without warranty of any kind, express or %
48% implied, including but not limited to the warranties of merchantability, %
49% fitness for a particular purpose and noninfringement. In no event shall %
50% ImageMagick Studio be liable for any claim, damages or other liability, %
51% whether in an action of contract, tort or otherwise, arising from, out of %
52% or in connection with ImageMagick or the use or other dealings in %
53% ImageMagick. %
54% %
55% Except as contained in this notice, the name of the ImageMagick Studio %
56% shall not be used in advertising or otherwise to promote the sale, use or %
57% other dealings in ImageMagick without prior written authorization from the %
58% ImageMagick Studio. %
59% %
60%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
61%
62%
63*/
64
65/*
66 * Also contains some pieces from libxpm and its modification for win32 by
67 * HeDu <hedu@cul-ipn.uni-kiel.de>:
68 *
69 * Copyright (C) 1989-95 GROUPE BULL
70 *
71 * Permission is hereby granted, free of charge, to any person obtaining a copy
72 * of this software and associated documentation files (the "Software"), to
73 * deal in the Software without restriction, including without limitation the
74 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
75 * sell copies of the Software, and to permit persons to whom the Software is
76 * furnished to do so, subject to the following conditions:
77 *
78 * The above copyright notice and this permission notice shall be included in
79 * all copies or substantial portions of the Software.
80 *
81 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
82 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
83 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
84 * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
85 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
86 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
87 *
88 * Except as contained in this notice, the name of GROUPE BULL shall not be
89 * used in advertising or otherwise to promote the sale, use or other dealings
90 * in this Software without prior written authorization from GROUPE BULL.
91 */
92
93#ifdef __GNUG__
94#pragma implementation "xpmdecod.h"
95#endif
96
97// For compilers that support precompilation, includes "wx.h".
98#include "wx/wxprec.h"
99
100#ifdef __BORLANDC__
101# pragma hdrstop
102#endif
103
104#ifndef WX_PRECOMP
105# include "wx/defs.h"
106#endif
107
108#if wxUSE_IMAGE && wxUSE_XPM
109
110#include "wx/stream.h"
111#include "wx/image.h"
112#include "wx/utils.h"
113#include "wx/log.h"
114#include "wx/intl.h"
115#include <string.h>
116
117#include "wx/xpmdecod.h"
118
119#if wxUSE_STREAMS
120bool wxXPMDecoder::CanRead(wxInputStream& stream)
121{
122 unsigned char buf[9];
123
124 stream.Read(buf, 9);
125 stream.SeekI(-9, wxFromCurrent);
126
127 return (memcmp(buf, "/* XPM */", 9) == 0);
128}
129
130wxImage wxXPMDecoder::ReadFile(wxInputStream& stream)
131{
132 size_t length = stream.GetSize();
133 wxCHECK_MSG(length != 0, wxNullImage, wxT("Cannot read XPM from stream of unknown size"));
134
135 char *xpm_buffer = new char[length];
136 char *p, *q;
137 size_t i;
138
139 if ( stream.Read(xpm_buffer, length).LastError() != wxSTREAM_NO_ERROR )
140 return FALSE;
141
142 /*
143 * Remove comments from the file:
144 */
145 for (p = xpm_buffer; *p != '\0'; p++)
146 {
147 if ( (*p == '"') || (*p == '\'') )
148 {
149 if (*p == '"')
150 {
151 for (p++; *p != '\0'; p++)
152 if ( (*p == '"') && (*(p - 1) != '\\') )
153 break;
154 }
155 else // *p == '\''
156 {
157 for (p++; *p != '\0'; p++)
158 if ( (*p == '\'') && (*(p - 1) != '\\') )
159 break;
160 }
161 if (*p == '\0')
162 break;
163 continue;
164 }
165 if ( (*p != '/') || (*(p + 1) != '*') )
166 continue;
167 for (q = p + 2; *q != '\0'; q++)
168 {
169 if ( (*q == '*') && (*(q + 1) == '/') )
170 break;
171 }
172 strcpy(p, q + 2);
173 }
174
175 /*
176 * Remove unquoted characters:
177 */
178 i = 0;
179 for (p = xpm_buffer; *p != '\0'; p++)
180 {
181 if ( *p != '"' )
182 continue;
183 for (q = p + 1; *q != '\0'; q++)
184 if (*q == '"')
185 break;
186 strncpy(xpm_buffer + i, p + 1, q - p - 1);
187 i += q - p - 1;
188 xpm_buffer[i++] = '\n';
189 p = q + 1;
190 }
191 xpm_buffer[i] = '\0';
192
193 /*
194 * Create array of lines and convert \n's to \0's:
195 */
196 const char **xpm_lines;
197 size_t lines_cnt = 0;
198 size_t line;
199
200 for (p = xpm_buffer; *p != '\0'; p++)
201 {
202 if ( *p == '\n' )
203 lines_cnt++;
204 }
205
206 xpm_lines = new const char*[lines_cnt];
207 xpm_lines[0] = xpm_buffer;
208 line = 1;
209 for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
210 {
211 if ( *p == '\n' )
212 {
213 xpm_lines[line] = p + 1;
214 *p = '\0';
215 line++;
216 }
217 }
218
219 /*
220 * Read the image:
221 */
222 wxImage img = ReadData(xpm_lines);
223
224 delete[] xpm_buffer;
225#ifdef __WIN16__
226 delete[] (char**) xpm_lines;
227#else
228 delete[] xpm_lines;
229#endif
230 return img;
231}
232#endif // wxUSE_STREAMS
233
234
235/*****************************************************************************\
236* rgbtab.h *
237* *
238* A hard coded rgb.txt. To keep it short I removed all colornames with *
239* trailing numbers, Blue3 etc, except the GrayXX. Sorry Grey-lovers I prefer *
240* Gray ;-). But Grey is recognized on lookups, only on save Gray will be *
241* used, maybe you want to do some substitue there too. *
242* *
243* To save memory the RGBs are coded in one long value, as done by the RGB *
244* macro. *
245* *
246* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
247\*****************************************************************************/
248
249
250typedef struct
251{
252 char *name;
253 wxUint32 rgb;
254} rgbRecord;
255
256#define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
257
258static rgbRecord theRGBRecords[] =
259{
260 {"aliceblue", myRGB(240, 248, 255)},
261 {"antiquewhite", myRGB(250, 235, 215)},
262 {"aquamarine", myRGB(50, 191, 193)},
263 {"azure", myRGB(240, 255, 255)},
264 {"beige", myRGB(245, 245, 220)},
265 {"bisque", myRGB(255, 228, 196)},
266 {"black", myRGB(0, 0, 0)},
267 {"blanchedalmond", myRGB(255, 235, 205)},
268 {"blue", myRGB(0, 0, 255)},
269 {"blueviolet", myRGB(138, 43, 226)},
270 {"brown", myRGB(165, 42, 42)},
271 {"burlywood", myRGB(222, 184, 135)},
272 {"cadetblue", myRGB(95, 146, 158)},
273 {"chartreuse", myRGB(127, 255, 0)},
274 {"chocolate", myRGB(210, 105, 30)},
275 {"coral", myRGB(255, 114, 86)},
276 {"cornflowerblue", myRGB(34, 34, 152)},
277 {"cornsilk", myRGB(255, 248, 220)},
278 {"cyan", myRGB(0, 255, 255)},
279 {"darkgoldenrod", myRGB(184, 134, 11)},
280 {"darkgreen", myRGB(0, 86, 45)},
281 {"darkkhaki", myRGB(189, 183, 107)},
282 {"darkolivegreen", myRGB(85, 86, 47)},
283 {"darkorange", myRGB(255, 140, 0)},
284 {"darkorchid", myRGB(139, 32, 139)},
285 {"darksalmon", myRGB(233, 150, 122)},
286 {"darkseagreen", myRGB(143, 188, 143)},
287 {"darkslateblue", myRGB(56, 75, 102)},
288 {"darkslategray", myRGB(47, 79, 79)},
289 {"darkturquoise", myRGB(0, 166, 166)},
290 {"darkviolet", myRGB(148, 0, 211)},
291 {"deeppink", myRGB(255, 20, 147)},
292 {"deepskyblue", myRGB(0, 191, 255)},
293 {"dimgray", myRGB(84, 84, 84)},
294 {"dodgerblue", myRGB(30, 144, 255)},
295 {"firebrick", myRGB(142, 35, 35)},
296 {"floralwhite", myRGB(255, 250, 240)},
297 {"forestgreen", myRGB(80, 159, 105)},
298 {"gainsboro", myRGB(220, 220, 220)},
299 {"ghostwhite", myRGB(248, 248, 255)},
300 {"gold", myRGB(218, 170, 0)},
301 {"goldenrod", myRGB(239, 223, 132)},
302 {"gray", myRGB(126, 126, 126)},
303 {"gray0", myRGB(0, 0, 0)},
304 {"gray1", myRGB(3, 3, 3)},
305 {"gray10", myRGB(26, 26, 26)},
306 {"gray100", myRGB(255, 255, 255)},
307 {"gray11", myRGB(28, 28, 28)},
308 {"gray12", myRGB(31, 31, 31)},
309 {"gray13", myRGB(33, 33, 33)},
310 {"gray14", myRGB(36, 36, 36)},
311 {"gray15", myRGB(38, 38, 38)},
312 {"gray16", myRGB(41, 41, 41)},
313 {"gray17", myRGB(43, 43, 43)},
314 {"gray18", myRGB(46, 46, 46)},
315 {"gray19", myRGB(48, 48, 48)},
316 {"gray2", myRGB(5, 5, 5)},
317 {"gray20", myRGB(51, 51, 51)},
318 {"gray21", myRGB(54, 54, 54)},
319 {"gray22", myRGB(56, 56, 56)},
320 {"gray23", myRGB(59, 59, 59)},
321 {"gray24", myRGB(61, 61, 61)},
322 {"gray25", myRGB(64, 64, 64)},
323 {"gray26", myRGB(66, 66, 66)},
324 {"gray27", myRGB(69, 69, 69)},
325 {"gray28", myRGB(71, 71, 71)},
326 {"gray29", myRGB(74, 74, 74)},
327 {"gray3", myRGB(8, 8, 8)},
328 {"gray30", myRGB(77, 77, 77)},
329 {"gray31", myRGB(79, 79, 79)},
330 {"gray32", myRGB(82, 82, 82)},
331 {"gray33", myRGB(84, 84, 84)},
332 {"gray34", myRGB(87, 87, 87)},
333 {"gray35", myRGB(89, 89, 89)},
334 {"gray36", myRGB(92, 92, 92)},
335 {"gray37", myRGB(94, 94, 94)},
336 {"gray38", myRGB(97, 97, 97)},
337 {"gray39", myRGB(99, 99, 99)},
338 {"gray4", myRGB(10, 10, 10)},
339 {"gray40", myRGB(102, 102, 102)},
340 {"gray41", myRGB(105, 105, 105)},
341 {"gray42", myRGB(107, 107, 107)},
342 {"gray43", myRGB(110, 110, 110)},
343 {"gray44", myRGB(112, 112, 112)},
344 {"gray45", myRGB(115, 115, 115)},
345 {"gray46", myRGB(117, 117, 117)},
346 {"gray47", myRGB(120, 120, 120)},
347 {"gray48", myRGB(122, 122, 122)},
348 {"gray49", myRGB(125, 125, 125)},
349 {"gray5", myRGB(13, 13, 13)},
350 {"gray50", myRGB(127, 127, 127)},
351 {"gray51", myRGB(130, 130, 130)},
352 {"gray52", myRGB(133, 133, 133)},
353 {"gray53", myRGB(135, 135, 135)},
354 {"gray54", myRGB(138, 138, 138)},
355 {"gray55", myRGB(140, 140, 140)},
356 {"gray56", myRGB(143, 143, 143)},
357 {"gray57", myRGB(145, 145, 145)},
358 {"gray58", myRGB(148, 148, 148)},
359 {"gray59", myRGB(150, 150, 150)},
360 {"gray6", myRGB(15, 15, 15)},
361 {"gray60", myRGB(153, 153, 153)},
362 {"gray61", myRGB(156, 156, 156)},
363 {"gray62", myRGB(158, 158, 158)},
364 {"gray63", myRGB(161, 161, 161)},
365 {"gray64", myRGB(163, 163, 163)},
366 {"gray65", myRGB(166, 166, 166)},
367 {"gray66", myRGB(168, 168, 168)},
368 {"gray67", myRGB(171, 171, 171)},
369 {"gray68", myRGB(173, 173, 173)},
370 {"gray69", myRGB(176, 176, 176)},
371 {"gray7", myRGB(18, 18, 18)},
372 {"gray70", myRGB(179, 179, 179)},
373 {"gray71", myRGB(181, 181, 181)},
374 {"gray72", myRGB(184, 184, 184)},
375 {"gray73", myRGB(186, 186, 186)},
376 {"gray74", myRGB(189, 189, 189)},
377 {"gray75", myRGB(191, 191, 191)},
378 {"gray76", myRGB(194, 194, 194)},
379 {"gray77", myRGB(196, 196, 196)},
380 {"gray78", myRGB(199, 199, 199)},
381 {"gray79", myRGB(201, 201, 201)},
382 {"gray8", myRGB(20, 20, 20)},
383 {"gray80", myRGB(204, 204, 204)},
384 {"gray81", myRGB(207, 207, 207)},
385 {"gray82", myRGB(209, 209, 209)},
386 {"gray83", myRGB(212, 212, 212)},
387 {"gray84", myRGB(214, 214, 214)},
388 {"gray85", myRGB(217, 217, 217)},
389 {"gray86", myRGB(219, 219, 219)},
390 {"gray87", myRGB(222, 222, 222)},
391 {"gray88", myRGB(224, 224, 224)},
392 {"gray89", myRGB(227, 227, 227)},
393 {"gray9", myRGB(23, 23, 23)},
394 {"gray90", myRGB(229, 229, 229)},
395 {"gray91", myRGB(232, 232, 232)},
396 {"gray92", myRGB(235, 235, 235)},
397 {"gray93", myRGB(237, 237, 237)},
398 {"gray94", myRGB(240, 240, 240)},
399 {"gray95", myRGB(242, 242, 242)},
400 {"gray96", myRGB(245, 245, 245)},
401 {"gray97", myRGB(247, 247, 247)},
402 {"gray98", myRGB(250, 250, 250)},
403 {"gray99", myRGB(252, 252, 252)},
404 {"green", myRGB(0, 255, 0)},
405 {"greenyellow", myRGB(173, 255, 47)},
406 {"honeydew", myRGB(240, 255, 240)},
407 {"hotpink", myRGB(255, 105, 180)},
408 {"indianred", myRGB(107, 57, 57)},
409 {"ivory", myRGB(255, 255, 240)},
410 {"khaki", myRGB(179, 179, 126)},
411 {"lavender", myRGB(230, 230, 250)},
412 {"lavenderblush", myRGB(255, 240, 245)},
413 {"lawngreen", myRGB(124, 252, 0)},
414 {"lemonchiffon", myRGB(255, 250, 205)},
415 {"lightblue", myRGB(176, 226, 255)},
416 {"lightcoral", myRGB(240, 128, 128)},
417 {"lightcyan", myRGB(224, 255, 255)},
418 {"lightgoldenrod", myRGB(238, 221, 130)},
419 {"lightgoldenrodyellow", myRGB(250, 250, 210)},
420 {"lightgray", myRGB(168, 168, 168)},
421 {"lightpink", myRGB(255, 182, 193)},
422 {"lightsalmon", myRGB(255, 160, 122)},
423 {"lightseagreen", myRGB(32, 178, 170)},
424 {"lightskyblue", myRGB(135, 206, 250)},
425 {"lightslateblue", myRGB(132, 112, 255)},
426 {"lightslategray", myRGB(119, 136, 153)},
427 {"lightsteelblue", myRGB(124, 152, 211)},
428 {"lightyellow", myRGB(255, 255, 224)},
429 {"limegreen", myRGB(0, 175, 20)},
430 {"linen", myRGB(250, 240, 230)},
431 {"magenta", myRGB(255, 0, 255)},
432 {"maroon", myRGB(143, 0, 82)},
433 {"mediumaquamarine", myRGB(0, 147, 143)},
434 {"mediumblue", myRGB(50, 50, 204)},
435 {"mediumforestgreen", myRGB(50, 129, 75)},
436 {"mediumgoldenrod", myRGB(209, 193, 102)},
437 {"mediumorchid", myRGB(189, 82, 189)},
438 {"mediumpurple", myRGB(147, 112, 219)},
439 {"mediumseagreen", myRGB(52, 119, 102)},
440 {"mediumslateblue", myRGB(106, 106, 141)},
441 {"mediumspringgreen", myRGB(35, 142, 35)},
442 {"mediumturquoise", myRGB(0, 210, 210)},
443 {"mediumvioletred", myRGB(213, 32, 121)},
444 {"midnightblue", myRGB(47, 47, 100)},
445 {"mintcream", myRGB(245, 255, 250)},
446 {"mistyrose", myRGB(255, 228, 225)},
447 {"moccasin", myRGB(255, 228, 181)},
448 {"navajowhite", myRGB(255, 222, 173)},
449 {"navy", myRGB(35, 35, 117)},
450 {"navyblue", myRGB(35, 35, 117)},
451 {"oldlace", myRGB(253, 245, 230)},
452 {"olivedrab", myRGB(107, 142, 35)},
453 {"orange", myRGB(255, 135, 0)},
454 {"orangered", myRGB(255, 69, 0)},
455 {"orchid", myRGB(239, 132, 239)},
456 {"palegoldenrod", myRGB(238, 232, 170)},
457 {"palegreen", myRGB(115, 222, 120)},
458 {"paleturquoise", myRGB(175, 238, 238)},
459 {"palevioletred", myRGB(219, 112, 147)},
460 {"papayawhip", myRGB(255, 239, 213)},
461 {"peachpuff", myRGB(255, 218, 185)},
462 {"peru", myRGB(205, 133, 63)},
463 {"pink", myRGB(255, 181, 197)},
464 {"plum", myRGB(197, 72, 155)},
465 {"powderblue", myRGB(176, 224, 230)},
466 {"purple", myRGB(160, 32, 240)},
467 {"red", myRGB(255, 0, 0)},
468 {"rosybrown", myRGB(188, 143, 143)},
469 {"royalblue", myRGB(65, 105, 225)},
470 {"saddlebrown", myRGB(139, 69, 19)},
471 {"salmon", myRGB(233, 150, 122)},
472 {"sandybrown", myRGB(244, 164, 96)},
473 {"seagreen", myRGB(82, 149, 132)},
474 {"seashell", myRGB(255, 245, 238)},
475 {"sienna", myRGB(150, 82, 45)},
476 {"skyblue", myRGB(114, 159, 255)},
477 {"slateblue", myRGB(126, 136, 171)},
478 {"slategray", myRGB(112, 128, 144)},
479 {"snow", myRGB(255, 250, 250)},
480 {"springgreen", myRGB(65, 172, 65)},
481 {"steelblue", myRGB(84, 112, 170)},
482 {"tan", myRGB(222, 184, 135)},
483 {"thistle", myRGB(216, 191, 216)},
484 {"tomato", myRGB(255, 99, 71)},
485 {"transparent", myRGB(0, 0, 1)},
486 {"turquoise", myRGB(25, 204, 223)},
487 {"violet", myRGB(156, 62, 206)},
488 {"violetred", myRGB(243, 62, 150)},
489 {"wheat", myRGB(245, 222, 179)},
490 {"white", myRGB(255, 255, 255)},
491 {"whitesmoke", myRGB(245, 245, 245)},
492 {"yellow", myRGB(255, 255, 0)},
493 {"yellowgreen", myRGB(50, 216, 56)},
494 {NULL, myRGB(0, 0, 0)}
495};
496static int numTheRGBRecords = 234;
497
498static unsigned char ParseHexadecimal(char digit1, char digit2)
499{
500 unsigned char i1, i2;
501
502 if (digit1 >= 'a')
503 i1 = digit1 - 'a' + 0x0A;
504 else if (digit1 >= 'A')
505 i1 = digit1 - 'A' + 0x0A;
506 else
507 i1 = digit1 - '0';
508 if (digit2 >= 'a')
509 i2 = digit2 - 'a' + 0x0A;
510 else if (digit2 >= 'A')
511 i2 = digit2 - 'A' + 0x0A;
512 else
513 i2 = digit2 - '0';
514 return (0x10 * i1 + i2);
515}
516
517static bool GetRGBFromName(const char *inname, bool *isNone,
518 unsigned char *r, unsigned char*g, unsigned char *b)
519{
520 int left, right, middle;
521 int cmp;
522 wxUint32 rgbVal;
523 char *name;
524 char *grey, *p;
525
526 // #rrggbb are not in database, we parse them directly
527 if ( *inname == '#' && strlen(inname) == 7 )
528 {
529 *r = ParseHexadecimal(inname[1], inname[2]);
530 *g = ParseHexadecimal(inname[3], inname[4]);
531 *b = ParseHexadecimal(inname[5], inname[6]);
532 *isNone = FALSE;
533 return TRUE;
534 }
535
536 name = strdup(inname);
537
538 // theRGBRecords[] has no names with spaces, and no grey, but a
539 // lot of gray...
540
541 // so first extract ' '
542 while ((p = strchr(name, ' ')) != NULL)
543 {
544 while (*(p)) // till eof of string
545 {
546 *p = *(p + 1); // copy to the left
547 p++;
548 }
549 }
550 // fold to lower case
551 p = name;
552 while (*p)
553 {
554 *p = tolower(*p);
555 p++;
556 }
557
558 // substitute Grey with Gray, else rgbtab.h would have more than 100
559 // 'duplicate' entries
560 if ( (grey = strstr(name, "grey")) != NULL )
561 grey[2] = 'a';
562
563 // check for special 'none' colour:
564 bool found;
565 if ( strcmp(name, "none") == 0 )
566 {
567 *isNone = TRUE;
568 found = TRUE;
569 }
570 else // not "None"
571 {
572 found = FALSE;
573
574 // binary search:
575 left = 0;
576 right = numTheRGBRecords - 1;
577 do
578 {
579 middle = (left + right) / 2;
580 cmp = strcmp(name, theRGBRecords[middle].name);
581 if ( cmp == 0 )
582 {
583 rgbVal = theRGBRecords[middle].rgb;
584 *r = (unsigned char)((rgbVal >> 16) & 0xFF);
585 *g = (unsigned char)((rgbVal >> 8) & 0xFF);
586 *b = (unsigned char)((rgbVal) & 0xFF);
587 *isNone = FALSE;
588 found = TRUE;
589 break;
590 }
591 else if ( cmp < 0 )
592 {
593 right = middle - 1;
594 }
595 else // cmp > 0
596 {
597 left = middle + 1;
598 }
599 } while (left <= right);
600 }
601
602 free(name);
603
604 return found;
605}
606
607static const char *ParseColor(const char *data)
608{
609 static const char *targets[] =
610 {"c ", "g ", "g4 ", "m ", "b ", "s ", NULL};
611
612 const char *p, *r;
613 const char *q;
614 int i;
615
616 for (i = 0; targets[i] != NULL; i++)
617 {
618 r = data;
619 for (q = targets[i]; *r != '\0'; r++)
620 {
621 if ( *r != *q )
622 continue;
623 if ( !isspace((int) (*(r - 1))) )
624 continue;
625 p = r;
626 for (;;)
627 {
628 if ( *q == '\0' )
629 return p;
630 if ( *p++ != *q++ )
631 break;
632 }
633 q = targets[i];
634 }
635 }
636 return NULL;
637}
638
639class wxXPMColourMapData : public wxObject
640{
641 public:
642 unsigned char R,G,B;
643};
644
645wxImage wxXPMDecoder::ReadData(const char **xpm_data)
646{
647 wxImage img;
648 int count;
649 unsigned width, height, colors_cnt, chars_per_pixel;
650 size_t i, j, i_key;
651 wxChar key[64];
652 const char *clr_def;
653 bool hasMask;
654 wxXPMColourMapData *clr_data;
655 wxHashTable clr_tbl(wxKEY_STRING);
656
657 /*
658 * Read hints and initialize structures:
659 */
660
661 count = sscanf(xpm_data[0], "%u %u %u %u",
662 &width, &height, &colors_cnt, &chars_per_pixel);
663 if ( count != 4 || width * height * colors_cnt == 0 )
664 {
665 wxLogError(_T("XPM: Not XPM data!"));
666 return wxNullImage;
667 }
668
669 // VS: XPM color map this large would be insane, since XPMs are encoded with
670 // 92 possible values on each position, 92^64 is *way* larger space than
671 // 8bit RGB...
672 wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
673
674 img.Create(width, height);
675 if ( !img.Ok() ) return img;
676
677 img.SetMask(FALSE);
678 key[chars_per_pixel] = wxT('\0');
679 hasMask = FALSE;
680 clr_tbl.DeleteContents(TRUE);
681
682 /*
683 * Create colour map:
684 */
685 for (i = 0; i < colors_cnt; i++)
686 {
687 for (i_key = 0; i_key < chars_per_pixel; i_key++)
688 key[i_key] = (wxChar)xpm_data[1 + i][i_key];
689 clr_def = ParseColor(xpm_data[1 + i]);
690 clr_data = new wxXPMColourMapData;
691
692 if ( clr_def == NULL )
693 {
694 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
695 clr_data->R = 255, clr_data->G = 0, clr_data->B = 255;
696 }
697 else
698 {
699 bool isNone;
700 if ( !GetRGBFromName(clr_def, &isNone,
701 &clr_data->R, &clr_data->G, &clr_data->B) )
702 {
703 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
704 clr_data->R = 255, clr_data->G = 0, clr_data->B = 255;
705 }
706 else
707 {
708 if ( isNone )
709 {
710 img.SetMask(TRUE);
711 img.SetMaskColour(255, 0, 255);
712 hasMask = TRUE;
713 clr_data->R = 255, clr_data->G = 0, clr_data->B = 255;
714 }
715 else
716 {
717 if ( hasMask && clr_data->R == 255 &&
718 clr_data->G == 0 && clr_data->B == 255 )
719 clr_data->B = 254;
720 }
721 }
722 }
723 clr_tbl.Put(key, clr_data);
724 }
725
726 /*
727 * Parse image data:
728 */
729
730 unsigned char *img_data = img.GetData();
731 for (j = 0; j < height; j++)
732 {
733 for (i = 0; i < width; i++, img_data += 3)
734 {
735 for (i_key = 0; i_key < chars_per_pixel; i_key++)
736 key[i_key] = (wxChar)xpm_data[1 + colors_cnt + j]
737 [chars_per_pixel * i + i_key];
738 clr_data = (wxXPMColourMapData*) clr_tbl.Get(key);
739 if ( clr_data == NULL )
740 {
741 wxLogError(_("XPM: Malformed pixel data!"));
742 }
743 else
744 {
745 img_data[0] = clr_data->R;
746 img_data[1] = clr_data->G;
747 img_data[2] = clr_data->B;
748 }
749 }
750 }
751
752 return img;
753}
754
755
756#endif // wxUSE_IMAGE && wxUSE_XPM
wxWidgets (Impactor)