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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/hashmap.h"
115#include "wx/intl.h"
116#include <string.h>
117
118#include <ctype.h>
119
120#include "wx/xpmdecod.h"
121
122#if wxUSE_STREAMS
123bool wxXPMDecoder::CanRead(wxInputStream& stream)
124{
125 unsigned char buf[9];
126
127 if ( !stream.Read(buf, WXSIZEOF(buf)) )
128 return FALSE;
129
130 stream.SeekI(-(off_t)WXSIZEOF(buf), wxFromCurrent);
131
132 return memcmp(buf, "/* XPM */", WXSIZEOF(buf)) == 0;
133}
134
135wxImage wxXPMDecoder::ReadFile(wxInputStream& stream)
136{
137 size_t length = stream.GetSize();
138 wxCHECK_MSG( length != 0, wxNullImage,
139 wxT("Cannot read XPM from stream of unknown size") );
140
141 // use a smart buffer to be sure to free memory even when we return on
142 // error
143 wxCharBuffer buffer(length);
144
145 char *xpm_buffer = (char *)buffer.data();
146 if ( stream.Read(xpm_buffer, length).GetLastError() == wxSTREAM_READ_ERROR )
147 return wxNullImage;
148 xpm_buffer[length] = '\0';
149
150 /*
151 * Remove comments from the file:
152 */
153 char *p, *q;
154 for (p = xpm_buffer; *p != '\0'; p++)
155 {
156 if ( (*p == '"') || (*p == '\'') )
157 {
158 if (*p == '"')
159 {
160 for (p++; *p != '\0'; p++)
161 if ( (*p == '"') && (*(p - 1) != '\\') )
162 break;
163 }
164 else // *p == '\''
165 {
166 for (p++; *p != '\0'; p++)
167 if ( (*p == '\'') && (*(p - 1) != '\\') )
168 break;
169 }
170 if (*p == '\0')
171 break;
172 continue;
173 }
174 if ( (*p != '/') || (*(p + 1) != '*') )
175 continue;
176 for (q = p + 2; *q != '\0'; q++)
177 {
178 if ( (*q == '*') && (*(q + 1) == '/') )
179 break;
180 }
181 strcpy(p, q + 2);
182 }
183
184 /*
185 * Remove unquoted characters:
186 */
187 size_t i = 0;
188 for (p = xpm_buffer; *p != '\0'; p++)
189 {
190 if ( *p != '"' )
191 continue;
192 for (q = p + 1; *q != '\0'; q++)
193 if (*q == '"')
194 break;
195 strncpy(xpm_buffer + i, p + 1, q - p - 1);
196 i += q - p - 1;
197 xpm_buffer[i++] = '\n';
198 p = q + 1;
199 }
200 xpm_buffer[i] = '\0';
201
202 /*
203 * Create array of lines and convert \n's to \0's:
204 */
205 const char **xpm_lines;
206 size_t lines_cnt = 0;
207 size_t line;
208
209 for (p = xpm_buffer; *p != '\0'; p++)
210 {
211 if ( *p == '\n' )
212 lines_cnt++;
213 }
214
215 if ( !lines_cnt )
216 {
217 // this doesn't really look an XPM image
218 return wxNullImage;
219 }
220
221 xpm_lines = new const char*[lines_cnt];
222 xpm_lines[0] = xpm_buffer;
223 line = 1;
224 for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
225 {
226 if ( *p == '\n' )
227 {
228 xpm_lines[line] = p + 1;
229 *p = '\0';
230 line++;
231 }
232 }
233
234 /*
235 * Read the image:
236 */
237 wxImage img = ReadData(xpm_lines);
238
239#ifdef __WIN16__
240 delete[] (char**) xpm_lines;
241#else
242 delete[] xpm_lines;
243#endif
244
245 return img;
246}
247#endif // wxUSE_STREAMS
248
249
250/*****************************************************************************\
251* rgbtab.h *
252* *
253* A hard coded rgb.txt. To keep it short I removed all colornames with *
254* trailing numbers, Blue3 etc, except the GrayXX. Sorry Grey-lovers I prefer *
255* Gray ;-). But Grey is recognized on lookups, only on save Gray will be *
256* used, maybe you want to do some substitue there too. *
257* *
258* To save memory the RGBs are coded in one long value, as done by the RGB *
259* macro. *
260* *
261* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
262\*****************************************************************************/
263
264
265typedef struct
266{
267 const char *name;
268 wxUint32 rgb;
269} rgbRecord;
270
271#define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
272
273static rgbRecord theRGBRecords[] =
274{
275 {"aliceblue", myRGB(240, 248, 255)},
276 {"antiquewhite", myRGB(250, 235, 215)},
277 {"aquamarine", myRGB(50, 191, 193)},
278 {"azure", myRGB(240, 255, 255)},
279 {"beige", myRGB(245, 245, 220)},
280 {"bisque", myRGB(255, 228, 196)},
281 {"black", myRGB(0, 0, 0)},
282 {"blanchedalmond", myRGB(255, 235, 205)},
283 {"blue", myRGB(0, 0, 255)},
284 {"blueviolet", myRGB(138, 43, 226)},
285 {"brown", myRGB(165, 42, 42)},
286 {"burlywood", myRGB(222, 184, 135)},
287 {"cadetblue", myRGB(95, 146, 158)},
288 {"chartreuse", myRGB(127, 255, 0)},
289 {"chocolate", myRGB(210, 105, 30)},
290 {"coral", myRGB(255, 114, 86)},
291 {"cornflowerblue", myRGB(34, 34, 152)},
292 {"cornsilk", myRGB(255, 248, 220)},
293 {"cyan", myRGB(0, 255, 255)},
294 {"darkgoldenrod", myRGB(184, 134, 11)},
295 {"darkgreen", myRGB(0, 86, 45)},
296 {"darkkhaki", myRGB(189, 183, 107)},
297 {"darkolivegreen", myRGB(85, 86, 47)},
298 {"darkorange", myRGB(255, 140, 0)},
299 {"darkorchid", myRGB(139, 32, 139)},
300 {"darksalmon", myRGB(233, 150, 122)},
301 {"darkseagreen", myRGB(143, 188, 143)},
302 {"darkslateblue", myRGB(56, 75, 102)},
303 {"darkslategray", myRGB(47, 79, 79)},
304 {"darkturquoise", myRGB(0, 166, 166)},
305 {"darkviolet", myRGB(148, 0, 211)},
306 {"deeppink", myRGB(255, 20, 147)},
307 {"deepskyblue", myRGB(0, 191, 255)},
308 {"dimgray", myRGB(84, 84, 84)},
309 {"dodgerblue", myRGB(30, 144, 255)},
310 {"firebrick", myRGB(142, 35, 35)},
311 {"floralwhite", myRGB(255, 250, 240)},
312 {"forestgreen", myRGB(80, 159, 105)},
313 {"gainsboro", myRGB(220, 220, 220)},
314 {"ghostwhite", myRGB(248, 248, 255)},
315 {"gold", myRGB(218, 170, 0)},
316 {"goldenrod", myRGB(239, 223, 132)},
317 {"gray", myRGB(126, 126, 126)},
318 {"gray0", myRGB(0, 0, 0)},
319 {"gray1", myRGB(3, 3, 3)},
320 {"gray10", myRGB(26, 26, 26)},
321 {"gray100", myRGB(255, 255, 255)},
322 {"gray11", myRGB(28, 28, 28)},
323 {"gray12", myRGB(31, 31, 31)},
324 {"gray13", myRGB(33, 33, 33)},
325 {"gray14", myRGB(36, 36, 36)},
326 {"gray15", myRGB(38, 38, 38)},
327 {"gray16", myRGB(41, 41, 41)},
328 {"gray17", myRGB(43, 43, 43)},
329 {"gray18", myRGB(46, 46, 46)},
330 {"gray19", myRGB(48, 48, 48)},
331 {"gray2", myRGB(5, 5, 5)},
332 {"gray20", myRGB(51, 51, 51)},
333 {"gray21", myRGB(54, 54, 54)},
334 {"gray22", myRGB(56, 56, 56)},
335 {"gray23", myRGB(59, 59, 59)},
336 {"gray24", myRGB(61, 61, 61)},
337 {"gray25", myRGB(64, 64, 64)},
338 {"gray26", myRGB(66, 66, 66)},
339 {"gray27", myRGB(69, 69, 69)},
340 {"gray28", myRGB(71, 71, 71)},
341 {"gray29", myRGB(74, 74, 74)},
342 {"gray3", myRGB(8, 8, 8)},
343 {"gray30", myRGB(77, 77, 77)},
344 {"gray31", myRGB(79, 79, 79)},
345 {"gray32", myRGB(82, 82, 82)},
346 {"gray33", myRGB(84, 84, 84)},
347 {"gray34", myRGB(87, 87, 87)},
348 {"gray35", myRGB(89, 89, 89)},
349 {"gray36", myRGB(92, 92, 92)},
350 {"gray37", myRGB(94, 94, 94)},
351 {"gray38", myRGB(97, 97, 97)},
352 {"gray39", myRGB(99, 99, 99)},
353 {"gray4", myRGB(10, 10, 10)},
354 {"gray40", myRGB(102, 102, 102)},
355 {"gray41", myRGB(105, 105, 105)},
356 {"gray42", myRGB(107, 107, 107)},
357 {"gray43", myRGB(110, 110, 110)},
358 {"gray44", myRGB(112, 112, 112)},
359 {"gray45", myRGB(115, 115, 115)},
360 {"gray46", myRGB(117, 117, 117)},
361 {"gray47", myRGB(120, 120, 120)},
362 {"gray48", myRGB(122, 122, 122)},
363 {"gray49", myRGB(125, 125, 125)},
364 {"gray5", myRGB(13, 13, 13)},
365 {"gray50", myRGB(127, 127, 127)},
366 {"gray51", myRGB(130, 130, 130)},
367 {"gray52", myRGB(133, 133, 133)},
368 {"gray53", myRGB(135, 135, 135)},
369 {"gray54", myRGB(138, 138, 138)},
370 {"gray55", myRGB(140, 140, 140)},
371 {"gray56", myRGB(143, 143, 143)},
372 {"gray57", myRGB(145, 145, 145)},
373 {"gray58", myRGB(148, 148, 148)},
374 {"gray59", myRGB(150, 150, 150)},
375 {"gray6", myRGB(15, 15, 15)},
376 {"gray60", myRGB(153, 153, 153)},
377 {"gray61", myRGB(156, 156, 156)},
378 {"gray62", myRGB(158, 158, 158)},
379 {"gray63", myRGB(161, 161, 161)},
380 {"gray64", myRGB(163, 163, 163)},
381 {"gray65", myRGB(166, 166, 166)},
382 {"gray66", myRGB(168, 168, 168)},
383 {"gray67", myRGB(171, 171, 171)},
384 {"gray68", myRGB(173, 173, 173)},
385 {"gray69", myRGB(176, 176, 176)},
386 {"gray7", myRGB(18, 18, 18)},
387 {"gray70", myRGB(179, 179, 179)},
388 {"gray71", myRGB(181, 181, 181)},
389 {"gray72", myRGB(184, 184, 184)},
390 {"gray73", myRGB(186, 186, 186)},
391 {"gray74", myRGB(189, 189, 189)},
392 {"gray75", myRGB(191, 191, 191)},
393 {"gray76", myRGB(194, 194, 194)},
394 {"gray77", myRGB(196, 196, 196)},
395 {"gray78", myRGB(199, 199, 199)},
396 {"gray79", myRGB(201, 201, 201)},
397 {"gray8", myRGB(20, 20, 20)},
398 {"gray80", myRGB(204, 204, 204)},
399 {"gray81", myRGB(207, 207, 207)},
400 {"gray82", myRGB(209, 209, 209)},
401 {"gray83", myRGB(212, 212, 212)},
402 {"gray84", myRGB(214, 214, 214)},
403 {"gray85", myRGB(217, 217, 217)},
404 {"gray86", myRGB(219, 219, 219)},
405 {"gray87", myRGB(222, 222, 222)},
406 {"gray88", myRGB(224, 224, 224)},
407 {"gray89", myRGB(227, 227, 227)},
408 {"gray9", myRGB(23, 23, 23)},
409 {"gray90", myRGB(229, 229, 229)},
410 {"gray91", myRGB(232, 232, 232)},
411 {"gray92", myRGB(235, 235, 235)},
412 {"gray93", myRGB(237, 237, 237)},
413 {"gray94", myRGB(240, 240, 240)},
414 {"gray95", myRGB(242, 242, 242)},
415 {"gray96", myRGB(245, 245, 245)},
416 {"gray97", myRGB(247, 247, 247)},
417 {"gray98", myRGB(250, 250, 250)},
418 {"gray99", myRGB(252, 252, 252)},
419 {"green", myRGB(0, 255, 0)},
420 {"greenyellow", myRGB(173, 255, 47)},
421 {"honeydew", myRGB(240, 255, 240)},
422 {"hotpink", myRGB(255, 105, 180)},
423 {"indianred", myRGB(107, 57, 57)},
424 {"ivory", myRGB(255, 255, 240)},
425 {"khaki", myRGB(179, 179, 126)},
426 {"lavender", myRGB(230, 230, 250)},
427 {"lavenderblush", myRGB(255, 240, 245)},
428 {"lawngreen", myRGB(124, 252, 0)},
429 {"lemonchiffon", myRGB(255, 250, 205)},
430 {"lightblue", myRGB(176, 226, 255)},
431 {"lightcoral", myRGB(240, 128, 128)},
432 {"lightcyan", myRGB(224, 255, 255)},
433 {"lightgoldenrod", myRGB(238, 221, 130)},
434 {"lightgoldenrodyellow", myRGB(250, 250, 210)},
435 {"lightgray", myRGB(168, 168, 168)},
436 {"lightpink", myRGB(255, 182, 193)},
437 {"lightsalmon", myRGB(255, 160, 122)},
438 {"lightseagreen", myRGB(32, 178, 170)},
439 {"lightskyblue", myRGB(135, 206, 250)},
440 {"lightslateblue", myRGB(132, 112, 255)},
441 {"lightslategray", myRGB(119, 136, 153)},
442 {"lightsteelblue", myRGB(124, 152, 211)},
443 {"lightyellow", myRGB(255, 255, 224)},
444 {"limegreen", myRGB(0, 175, 20)},
445 {"linen", myRGB(250, 240, 230)},
446 {"magenta", myRGB(255, 0, 255)},
447 {"maroon", myRGB(143, 0, 82)},
448 {"mediumaquamarine", myRGB(0, 147, 143)},
449 {"mediumblue", myRGB(50, 50, 204)},
450 {"mediumforestgreen", myRGB(50, 129, 75)},
451 {"mediumgoldenrod", myRGB(209, 193, 102)},
452 {"mediumorchid", myRGB(189, 82, 189)},
453 {"mediumpurple", myRGB(147, 112, 219)},
454 {"mediumseagreen", myRGB(52, 119, 102)},
455 {"mediumslateblue", myRGB(106, 106, 141)},
456 {"mediumspringgreen", myRGB(35, 142, 35)},
457 {"mediumturquoise", myRGB(0, 210, 210)},
458 {"mediumvioletred", myRGB(213, 32, 121)},
459 {"midnightblue", myRGB(47, 47, 100)},
460 {"mintcream", myRGB(245, 255, 250)},
461 {"mistyrose", myRGB(255, 228, 225)},
462 {"moccasin", myRGB(255, 228, 181)},
463 {"navajowhite", myRGB(255, 222, 173)},
464 {"navy", myRGB(35, 35, 117)},
465 {"navyblue", myRGB(35, 35, 117)},
466 {"oldlace", myRGB(253, 245, 230)},
467 {"olivedrab", myRGB(107, 142, 35)},
468 {"orange", myRGB(255, 135, 0)},
469 {"orangered", myRGB(255, 69, 0)},
470 {"orchid", myRGB(239, 132, 239)},
471 {"palegoldenrod", myRGB(238, 232, 170)},
472 {"palegreen", myRGB(115, 222, 120)},
473 {"paleturquoise", myRGB(175, 238, 238)},
474 {"palevioletred", myRGB(219, 112, 147)},
475 {"papayawhip", myRGB(255, 239, 213)},
476 {"peachpuff", myRGB(255, 218, 185)},
477 {"peru", myRGB(205, 133, 63)},
478 {"pink", myRGB(255, 181, 197)},
479 {"plum", myRGB(197, 72, 155)},
480 {"powderblue", myRGB(176, 224, 230)},
481 {"purple", myRGB(160, 32, 240)},
482 {"red", myRGB(255, 0, 0)},
483 {"rosybrown", myRGB(188, 143, 143)},
484 {"royalblue", myRGB(65, 105, 225)},
485 {"saddlebrown", myRGB(139, 69, 19)},
486 {"salmon", myRGB(233, 150, 122)},
487 {"sandybrown", myRGB(244, 164, 96)},
488 {"seagreen", myRGB(82, 149, 132)},
489 {"seashell", myRGB(255, 245, 238)},
490 {"sienna", myRGB(150, 82, 45)},
491 {"silver", myRGB(192, 192, 192)},
492 {"skyblue", myRGB(114, 159, 255)},
493 {"slateblue", myRGB(126, 136, 171)},
494 {"slategray", myRGB(112, 128, 144)},
495 {"snow", myRGB(255, 250, 250)},
496 {"springgreen", myRGB(65, 172, 65)},
497 {"steelblue", myRGB(84, 112, 170)},
498 {"tan", myRGB(222, 184, 135)},
499 {"thistle", myRGB(216, 191, 216)},
500 {"tomato", myRGB(255, 99, 71)},
501 {"transparent", myRGB(0, 0, 1)},
502 {"turquoise", myRGB(25, 204, 223)},
503 {"violet", myRGB(156, 62, 206)},
504 {"violetred", myRGB(243, 62, 150)},
505 {"wheat", myRGB(245, 222, 179)},
506 {"white", myRGB(255, 255, 255)},
507 {"whitesmoke", myRGB(245, 245, 245)},
508 {"yellow", myRGB(255, 255, 0)},
509 {"yellowgreen", myRGB(50, 216, 56)},
510 {NULL, myRGB(0, 0, 0)}
511};
512static int numTheRGBRecords = 235;
513
514static unsigned char ParseHexadecimal(char digit1, char digit2)
515{
516 unsigned char i1, i2;
517
518 if (digit1 >= 'a')
519 i1 = digit1 - 'a' + 0x0A;
520 else if (digit1 >= 'A')
521 i1 = digit1 - 'A' + 0x0A;
522 else
523 i1 = digit1 - '0';
524 if (digit2 >= 'a')
525 i2 = digit2 - 'a' + 0x0A;
526 else if (digit2 >= 'A')
527 i2 = digit2 - 'A' + 0x0A;
528 else
529 i2 = digit2 - '0';
530 return (0x10 * i1 + i2);
531}
532
533static bool GetRGBFromName(const char *inname, bool *isNone,
534 unsigned char *r, unsigned char*g, unsigned char *b)
535{
536 int left, right, middle;
537 int cmp;
538 wxUint32 rgbVal;
539 char *name;
540 char *grey, *p;
541
542 // Neither #rrggbb nor #rrrrggggbbbb are in database, we parse them directly
543 size_t inname_len = strlen(inname);
544 if ( *inname == '#' && (inname_len == 7 || inname_len == 13))
545 {
546 size_t ofs = (inname_len == 7) ? 2 : 4;
547 *r = ParseHexadecimal(inname[1], inname[2]);
548 *g = ParseHexadecimal(inname[1*ofs+1], inname[1*ofs+2]);
549 *b = ParseHexadecimal(inname[2*ofs+1], inname[2*ofs+2]);
550 *isNone = FALSE;
551 return TRUE;
552 }
553
554#ifdef __WXWINCE__
555 // TODO: is this right? How come it compiles on other
556 // platforms?
557 name = (char*) wxStrdup((wxChar*) inname);
558#else
559 name = wxStrdup(inname);
560#endif
561
562 // theRGBRecords[] has no names with spaces, and no grey, but a
563 // lot of gray...
564
565 // so first extract ' '
566 while ((p = strchr(name, ' ')) != NULL)
567 {
568 while (*(p)) // till eof of string
569 {
570 *p = *(p + 1); // copy to the left
571 p++;
572 }
573 }
574 // fold to lower case
575 p = name;
576 while (*p)
577 {
578 *p = tolower(*p);
579 p++;
580 }
581
582 // substitute Grey with Gray, else rgbtab.h would have more than 100
583 // 'duplicate' entries
584 if ( (grey = strstr(name, "grey")) != NULL )
585 grey[2] = 'a';
586
587 // check for special 'none' colour:
588 bool found;
589 if ( strcmp(name, "none") == 0 )
590 {
591 *isNone = TRUE;
592 found = TRUE;
593 }
594 else // not "None"
595 {
596 found = FALSE;
597
598 // binary search:
599 left = 0;
600 right = numTheRGBRecords - 1;
601 do
602 {
603 middle = (left + right) / 2;
604 cmp = strcmp(name, theRGBRecords[middle].name);
605 if ( cmp == 0 )
606 {
607 rgbVal = theRGBRecords[middle].rgb;
608 *r = (unsigned char)((rgbVal >> 16) & 0xFF);
609 *g = (unsigned char)((rgbVal >> 8) & 0xFF);
610 *b = (unsigned char)((rgbVal) & 0xFF);
611 *isNone = FALSE;
612 found = TRUE;
613 break;
614 }
615 else if ( cmp < 0 )
616 {
617 right = middle - 1;
618 }
619 else // cmp > 0
620 {
621 left = middle + 1;
622 }
623 } while (left <= right);
624 }
625
626 free(name);
627
628 return found;
629}
630
631static const char *ParseColor(const char *data)
632{
633 static const char *targets[] =
634 {"c ", "g ", "g4 ", "m ", "b ", "s ", NULL};
635
636 const char *p, *r;
637 const char *q;
638 int i;
639
640 for (i = 0; targets[i] != NULL; i++)
641 {
642 r = data;
643 for (q = targets[i]; *r != '\0'; r++)
644 {
645 if ( *r != *q )
646 continue;
647 if ( !wxIsspace((int) (*(r - 1))) )
648 continue;
649 p = r;
650 for (;;)
651 {
652 if ( *q == '\0' )
653 return p;
654 if ( *p++ != *q++ )
655 break;
656 }
657 q = targets[i];
658 }
659 }
660 return NULL;
661}
662
663struct wxXPMColourMapData
664{
665 unsigned char R,G,B;
666};
667WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap);
668
669wxImage wxXPMDecoder::ReadData(const char **xpm_data)
670{
671 wxImage img;
672 int count;
673 unsigned width, height, colors_cnt, chars_per_pixel;
674 size_t i, j, i_key;
675 wxChar key[64];
676 const char *clr_def;
677 bool hasMask;
678 wxXPMColourMapData clr_data;
679 wxXPMColourMap clr_tbl;
680
681 /*
682 * Read hints and initialize structures:
683 */
684
685 count = sscanf(xpm_data[0], "%u %u %u %u",
686 &width, &height, &colors_cnt, &chars_per_pixel);
687 if ( count != 4 || width * height * colors_cnt == 0 )
688 {
689 wxLogError(_T("XPM: Not XPM data!"));
690 return wxNullImage;
691 }
692
693 // VS: XPM color map this large would be insane, since XPMs are encoded with
694 // 92 possible values on each position, 92^64 is *way* larger space than
695 // 8bit RGB...
696 wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
697
698 img.Create(width, height);
699 if ( !img.Ok() ) return img;
700
701 img.SetMask(FALSE);
702 key[chars_per_pixel] = wxT('\0');
703 hasMask = FALSE;
704
705 /*
706 * Create colour map:
707 */
708 for (i = 0; i < colors_cnt; i++)
709 {
710 for (i_key = 0; i_key < chars_per_pixel; i_key++)
711 key[i_key] = (wxChar)xpm_data[1 + i][i_key];
712 clr_def = ParseColor(xpm_data[1 + i] + chars_per_pixel);
713
714 if ( clr_def == NULL )
715 {
716 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
717 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
718 }
719 else
720 {
721 bool isNone;
722 if ( !GetRGBFromName(clr_def, &isNone,
723 &clr_data.R, &clr_data.G, &clr_data.B) )
724 {
725 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
726 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
727 }
728 else
729 {
730 if ( isNone )
731 {
732 img.SetMask(TRUE);
733 img.SetMaskColour(255, 0, 255);
734 hasMask = TRUE;
735 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
736 }
737 else
738 {
739 if ( hasMask && clr_data.R == 255 &&
740 clr_data.G == 0 && clr_data.B == 255 )
741 clr_data.B = 254;
742 }
743 }
744 }
745 clr_tbl[key] = clr_data;
746 }
747
748 /*
749 * Parse image data:
750 */
751
752 unsigned char *img_data = img.GetData();
753 wxXPMColourMap::iterator entry;
754 wxXPMColourMap::iterator end = clr_tbl.end();
755
756 for (j = 0; j < height; j++)
757 {
758 for (i = 0; i < width; i++, img_data += 3)
759 {
760 for (i_key = 0; i_key < chars_per_pixel; i_key++)
761 key[i_key] = (wxChar)xpm_data[1 + colors_cnt + j]
762 [chars_per_pixel * i + i_key];
763 entry = clr_tbl.find(key);
764 if ( entry == end )
765 {
766 wxLogError(_("XPM: Malformed pixel data!"));
767 }
768 else
769 {
770 img_data[0] = entry->second.R;
771 img_data[1] = entry->second.G;
772 img_data[2] = entry->second.B;
773 }
774 }
775 }
776
777 return img;
778}
779
780#endif // wxUSE_IMAGE && wxUSE_XPM
wxWidgets (Impactor)