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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#ifdef __VISUALC__
119#include <ctype.h>
120#endif
121
122#include "wx/xpmdecod.h"
123
124#if wxUSE_STREAMS
125bool wxXPMDecoder::CanRead(wxInputStream& stream)
126{
127 unsigned char buf[9];
128
129 stream.Read(buf, 9);
130 stream.SeekI(-9, wxFromCurrent);
131
132 return (memcmp(buf, "/* XPM */", 9) == 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).LastError() == 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 {"skyblue", myRGB(114, 159, 255)},
492 {"slateblue", myRGB(126, 136, 171)},
493 {"slategray", myRGB(112, 128, 144)},
494 {"snow", myRGB(255, 250, 250)},
495 {"springgreen", myRGB(65, 172, 65)},
496 {"steelblue", myRGB(84, 112, 170)},
497 {"tan", myRGB(222, 184, 135)},
498 {"thistle", myRGB(216, 191, 216)},
499 {"tomato", myRGB(255, 99, 71)},
500 {"transparent", myRGB(0, 0, 1)},
501 {"turquoise", myRGB(25, 204, 223)},
502 {"violet", myRGB(156, 62, 206)},
503 {"violetred", myRGB(243, 62, 150)},
504 {"wheat", myRGB(245, 222, 179)},
505 {"white", myRGB(255, 255, 255)},
506 {"whitesmoke", myRGB(245, 245, 245)},
507 {"yellow", myRGB(255, 255, 0)},
508 {"yellowgreen", myRGB(50, 216, 56)},
509 {NULL, myRGB(0, 0, 0)}
510};
511static int numTheRGBRecords = 234;
512
513static unsigned char ParseHexadecimal(char digit1, char digit2)
514{
515 unsigned char i1, i2;
516
517 if (digit1 >= 'a')
518 i1 = digit1 - 'a' + 0x0A;
519 else if (digit1 >= 'A')
520 i1 = digit1 - 'A' + 0x0A;
521 else
522 i1 = digit1 - '0';
523 if (digit2 >= 'a')
524 i2 = digit2 - 'a' + 0x0A;
525 else if (digit2 >= 'A')
526 i2 = digit2 - 'A' + 0x0A;
527 else
528 i2 = digit2 - '0';
529 return (0x10 * i1 + i2);
530}
531
532static bool GetRGBFromName(const char *inname, bool *isNone,
533 unsigned char *r, unsigned char*g, unsigned char *b)
534{
535 int left, right, middle;
536 int cmp;
537 wxUint32 rgbVal;
538 char *name;
539 char *grey, *p;
540
541 // Neither #rrggbb nor #rrrrggggbbbb are in database, we parse them directly
542 size_t inname_len = strlen(inname);
543 if ( *inname == '#' && (inname_len == 7 || inname_len == 13))
544 {
545 size_t ofs = (inname_len == 7) ? 2 : 4;
546 *r = ParseHexadecimal(inname[1], inname[2]);
547 *g = ParseHexadecimal(inname[1*ofs+1], inname[1*ofs+2]);
548 *b = ParseHexadecimal(inname[2*ofs+1], inname[2*ofs+2]);
549 *isNone = FALSE;
550 return TRUE;
551 }
552
553 name = strdup(inname);
554
555 // theRGBRecords[] has no names with spaces, and no grey, but a
556 // lot of gray...
557
558 // so first extract ' '
559 while ((p = strchr(name, ' ')) != NULL)
560 {
561 while (*(p)) // till eof of string
562 {
563 *p = *(p + 1); // copy to the left
564 p++;
565 }
566 }
567 // fold to lower case
568 p = name;
569 while (*p)
570 {
571 *p = tolower(*p);
572 p++;
573 }
574
575 // substitute Grey with Gray, else rgbtab.h would have more than 100
576 // 'duplicate' entries
577 if ( (grey = strstr(name, "grey")) != NULL )
578 grey[2] = 'a';
579
580 // check for special 'none' colour:
581 bool found;
582 if ( strcmp(name, "none") == 0 )
583 {
584 *isNone = TRUE;
585 found = TRUE;
586 }
587 else // not "None"
588 {
589 found = FALSE;
590
591 // binary search:
592 left = 0;
593 right = numTheRGBRecords - 1;
594 do
595 {
596 middle = (left + right) / 2;
597 cmp = strcmp(name, theRGBRecords[middle].name);
598 if ( cmp == 0 )
599 {
600 rgbVal = theRGBRecords[middle].rgb;
601 *r = (unsigned char)((rgbVal >> 16) & 0xFF);
602 *g = (unsigned char)((rgbVal >> 8) & 0xFF);
603 *b = (unsigned char)((rgbVal) & 0xFF);
604 *isNone = FALSE;
605 found = TRUE;
606 break;
607 }
608 else if ( cmp < 0 )
609 {
610 right = middle - 1;
611 }
612 else // cmp > 0
613 {
614 left = middle + 1;
615 }
616 } while (left <= right);
617 }
618
619 free(name);
620
621 return found;
622}
623
624static const char *ParseColor(const char *data)
625{
626 static const char *targets[] =
627 {"c ", "g ", "g4 ", "m ", "b ", "s ", NULL};
628
629 const char *p, *r;
630 const char *q;
631 int i;
632
633 for (i = 0; targets[i] != NULL; i++)
634 {
635 r = data;
636 for (q = targets[i]; *r != '\0'; r++)
637 {
638 if ( *r != *q )
639 continue;
640 if ( !isspace((int) (*(r - 1))) )
641 continue;
642 p = r;
643 for (;;)
644 {
645 if ( *q == '\0' )
646 return p;
647 if ( *p++ != *q++ )
648 break;
649 }
650 q = targets[i];
651 }
652 }
653 return NULL;
654}
655
656struct wxXPMColourMapData
657{
658 unsigned char R,G,B;
659};
660WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap)
661
662wxImage wxXPMDecoder::ReadData(const char **xpm_data)
663{
664 wxImage img;
665 int count;
666 unsigned width, height, colors_cnt, chars_per_pixel;
667 size_t i, j, i_key;
668 wxChar key[64];
669 const char *clr_def;
670 bool hasMask;
671 wxXPMColourMapData clr_data;
672 wxXPMColourMap clr_tbl;
673
674 /*
675 * Read hints and initialize structures:
676 */
677
678 count = sscanf(xpm_data[0], "%u %u %u %u",
679 &width, &height, &colors_cnt, &chars_per_pixel);
680 if ( count != 4 || width * height * colors_cnt == 0 )
681 {
682 wxLogError(_T("XPM: Not XPM data!"));
683 return wxNullImage;
684 }
685
686 // VS: XPM color map this large would be insane, since XPMs are encoded with
687 // 92 possible values on each position, 92^64 is *way* larger space than
688 // 8bit RGB...
689 wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
690
691 img.Create(width, height);
692 if ( !img.Ok() ) return img;
693
694 img.SetMask(FALSE);
695 key[chars_per_pixel] = wxT('\0');
696 hasMask = FALSE;
697
698 /*
699 * Create colour map:
700 */
701 for (i = 0; i < colors_cnt; i++)
702 {
703 for (i_key = 0; i_key < chars_per_pixel; i_key++)
704 key[i_key] = (wxChar)xpm_data[1 + i][i_key];
705 clr_def = ParseColor(xpm_data[1 + i] + chars_per_pixel);
706
707 if ( clr_def == NULL )
708 {
709 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
710 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
711 }
712 else
713 {
714 bool isNone;
715 if ( !GetRGBFromName(clr_def, &isNone,
716 &clr_data.R, &clr_data.G, &clr_data.B) )
717 {
718 wxLogError(_("XPM: malformed colour definition '%s'!"), xpm_data[1+i]);
719 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
720 }
721 else
722 {
723 if ( isNone )
724 {
725 img.SetMask(TRUE);
726 img.SetMaskColour(255, 0, 255);
727 hasMask = TRUE;
728 clr_data.R = 255, clr_data.G = 0, clr_data.B = 255;
729 }
730 else
731 {
732 if ( hasMask && clr_data.R == 255 &&
733 clr_data.G == 0 && clr_data.B == 255 )
734 clr_data.B = 254;
735 }
736 }
737 }
738 clr_tbl[key] = clr_data;
739 }
740
741 /*
742 * Parse image data:
743 */
744
745 unsigned char *img_data = img.GetData();
746 wxXPMColourMap::iterator entry;
747 wxXPMColourMap::iterator end = clr_tbl.end();
748
749 for (j = 0; j < height; j++)
750 {
751 for (i = 0; i < width; i++, img_data += 3)
752 {
753 for (i_key = 0; i_key < chars_per_pixel; i_key++)
754 key[i_key] = (wxChar)xpm_data[1 + colors_cnt + j]
755 [chars_per_pixel * i + i_key];
756 entry = clr_tbl.find(key);
757 if ( entry == end )
758 {
759 wxLogError(_("XPM: Malformed pixel data!"));
760 }
761 else
762 {
763 img_data[0] = entry->second.R;
764 img_data[1] = entry->second.G;
765 img_data[2] = entry->second.B;
766 }
767 }
768 }
769
770 return img;
771}
772
773#endif // wxUSE_IMAGE && wxUSE_XPM
wxWidgets (Impactor)