/[pcsx2_0.9.7]/trunk/3rdparty/wxWidgets/src/common/xpmdecod.cpp
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committing r3113 initial commit again...
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/xpmdecod.cpp
3 // Purpose: wxXPMDecoder
4 // Author: John Cristy, Vaclav Slavik
5 // RCS-ID: $Id: xpmdecod.cpp 54948 2008-08-03 10:54:33Z VZ $
6 // Copyright: (c) John Cristy, Vaclav Slavik
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 /*
11
12 This file is partially based on source code of ImageMagick by John Cristy. Its
13 license 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 // For compilers that support precompilation, includes "wx.h".
94 #include "wx/wxprec.h"
95
96 #ifdef __BORLANDC__
97 #pragma hdrstop
98 #endif
99
100 #if wxUSE_IMAGE && wxUSE_XPM
101
102 #include "wx/xpmdecod.h"
103
104 #ifndef WX_PRECOMP
105 #include "wx/intl.h"
106 #include "wx/log.h"
107 #include "wx/utils.h"
108 #include "wx/hashmap.h"
109 #include "wx/stream.h"
110 #include "wx/image.h"
111 #include "wx/palette.h"
112 #endif
113
114 #include <string.h>
115 #include <ctype.h>
116
117 #if wxUSE_STREAMS
118 bool wxXPMDecoder::CanRead(wxInputStream& stream)
119 {
120 unsigned char buf[9];
121
122 if ( !stream.Read(buf, WXSIZEOF(buf)) )
123 return false;
124
125 stream.SeekI(-(wxFileOffset)WXSIZEOF(buf), wxFromCurrent);
126
127 return memcmp(buf, "/* XPM */", WXSIZEOF(buf)) == 0;
128 }
129
130 wxImage wxXPMDecoder::ReadFile(wxInputStream& stream)
131 {
132 size_t length = stream.GetSize();
133 wxCHECK_MSG( length != 0, wxNullImage,
134 wxT("Cannot read XPM from stream of unknown size") );
135
136 // use a smart buffer to be sure to free memory even when we return on
137 // error
138 wxCharBuffer buffer(length);
139
140 char *xpm_buffer = (char *)buffer.data();
141 if ( stream.Read(xpm_buffer, length).GetLastError() == wxSTREAM_READ_ERROR )
142 return wxNullImage;
143 xpm_buffer[length] = '\0';
144
145 /*
146 * Remove comments from the file:
147 */
148 char *p, *q;
149 for (p = xpm_buffer; *p != '\0'; p++)
150 {
151 if ( (*p == '"') || (*p == '\'') )
152 {
153 if (*p == '"')
154 {
155 for (p++; *p != '\0'; p++)
156 if ( (*p == '"') && (*(p - 1) != '\\') )
157 break;
158 }
159 else // *p == '\''
160 {
161 for (p++; *p != '\0'; p++)
162 if ( (*p == '\'') && (*(p - 1) != '\\') )
163 break;
164 }
165 if (*p == '\0')
166 break;
167 continue;
168 }
169 if ( (*p != '/') || (*(p + 1) != '*') )
170 continue;
171 for (q = p + 2; *q != '\0'; q++)
172 {
173 if ( (*q == '*') && (*(q + 1) == '/') )
174 break;
175 }
176
177 // memmove allows overlaps (unlike strcpy):
178 size_t cpylen = strlen(q + 2) + 1;
179 memmove(p, q + 2, cpylen);
180 }
181
182 /*
183 * Remove unquoted characters:
184 */
185 size_t i = 0;
186 for (p = xpm_buffer; *p != '\0'; p++)
187 {
188 if ( *p != '"' )
189 continue;
190 for (q = p + 1; *q != '\0'; q++)
191 if (*q == '"')
192 break;
193 strncpy(xpm_buffer + i, p + 1, q - p - 1);
194 i += q - p - 1;
195 xpm_buffer[i++] = '\n';
196 p = q + 1;
197 }
198 xpm_buffer[i] = '\0';
199
200 /*
201 * Create array of lines and convert \n's to \0's:
202 */
203 const char **xpm_lines;
204 size_t lines_cnt = 0;
205 size_t line;
206
207 for (p = xpm_buffer; *p != '\0'; p++)
208 {
209 if ( *p == '\n' )
210 lines_cnt++;
211 }
212
213 if ( !lines_cnt )
214 {
215 // this doesn't really look an XPM image
216 return wxNullImage;
217 }
218
219 xpm_lines = new const char*[lines_cnt + 1];
220 xpm_lines[0] = xpm_buffer;
221 line = 1;
222 for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
223 {
224 if ( *p == '\n' )
225 {
226 xpm_lines[line] = p + 1;
227 *p = '\0';
228 line++;
229 }
230 }
231
232 xpm_lines[lines_cnt] = NULL;
233
234 /*
235 * Read the image:
236 */
237 wxImage img = ReadData(xpm_lines);
238
239 delete[] xpm_lines;
240
241 return img;
242 }
243 #endif // wxUSE_STREAMS
244
245
246 /*****************************************************************************\
247 * rgbtab.h *
248 * *
249 * A hard coded rgb.txt. To keep it short I removed all colornames with *
250 * trailing numbers, Blue3 etc, except the GrayXX. Sorry Grey-lovers I prefer *
251 * Gray ;-). But Grey is recognized on lookups, only on save Gray will be *
252 * used, maybe you want to do some substitue there too. *
253 * *
254 * To save memory the RGBs are coded in one long value, as done by the RGB *
255 * macro. *
256 * *
257 * Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
258 \*****************************************************************************/
259
260
261 typedef struct
262 {
263 const char *name;
264 wxUint32 rgb;
265 } rgbRecord;
266
267 #define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
268
269 static rgbRecord theRGBRecords[] =
270 {
271 {"aliceblue", myRGB(240, 248, 255)},
272 {"antiquewhite", myRGB(250, 235, 215)},
273 {"aquamarine", myRGB(50, 191, 193)},
274 {"azure", myRGB(240, 255, 255)},
275 {"beige", myRGB(245, 245, 220)},
276 {"bisque", myRGB(255, 228, 196)},
277 {"black", myRGB(0, 0, 0)},
278 {"blanchedalmond", myRGB(255, 235, 205)},
279 {"blue", myRGB(0, 0, 255)},
280 {"blueviolet", myRGB(138, 43, 226)},
281 {"brown", myRGB(165, 42, 42)},
282 {"burlywood", myRGB(222, 184, 135)},
283 {"cadetblue", myRGB(95, 146, 158)},
284 {"chartreuse", myRGB(127, 255, 0)},
285 {"chocolate", myRGB(210, 105, 30)},
286 {"coral", myRGB(255, 114, 86)},
287 {"cornflowerblue", myRGB(34, 34, 152)},
288 {"cornsilk", myRGB(255, 248, 220)},
289 {"cyan", myRGB(0, 255, 255)},
290 {"darkgoldenrod", myRGB(184, 134, 11)},
291 {"darkgreen", myRGB(0, 86, 45)},
292 {"darkkhaki", myRGB(189, 183, 107)},
293 {"darkolivegreen", myRGB(85, 86, 47)},
294 {"darkorange", myRGB(255, 140, 0)},
295 {"darkorchid", myRGB(139, 32, 139)},
296 {"darksalmon", myRGB(233, 150, 122)},
297 {"darkseagreen", myRGB(143, 188, 143)},
298 {"darkslateblue", myRGB(56, 75, 102)},
299 {"darkslategray", myRGB(47, 79, 79)},
300 {"darkturquoise", myRGB(0, 166, 166)},
301 {"darkviolet", myRGB(148, 0, 211)},
302 {"deeppink", myRGB(255, 20, 147)},
303 {"deepskyblue", myRGB(0, 191, 255)},
304 {"dimgray", myRGB(84, 84, 84)},
305 {"dodgerblue", myRGB(30, 144, 255)},
306 {"firebrick", myRGB(142, 35, 35)},
307 {"floralwhite", myRGB(255, 250, 240)},
308 {"forestgreen", myRGB(80, 159, 105)},
309 {"gainsboro", myRGB(220, 220, 220)},
310 {"ghostwhite", myRGB(248, 248, 255)},
311 {"gold", myRGB(218, 170, 0)},
312 {"goldenrod", myRGB(239, 223, 132)},
313 {"gray", myRGB(126, 126, 126)},
314 {"gray0", myRGB(0, 0, 0)},
315 {"gray1", myRGB(3, 3, 3)},
316 {"gray10", myRGB(26, 26, 26)},
317 {"gray100", myRGB(255, 255, 255)},
318 {"gray11", myRGB(28, 28, 28)},
319 {"gray12", myRGB(31, 31, 31)},
320 {"gray13", myRGB(33, 33, 33)},
321 {"gray14", myRGB(36, 36, 36)},
322 {"gray15", myRGB(38, 38, 38)},
323 {"gray16", myRGB(41, 41, 41)},
324 {"gray17", myRGB(43, 43, 43)},
325 {"gray18", myRGB(46, 46, 46)},
326 {"gray19", myRGB(48, 48, 48)},
327 {"gray2", myRGB(5, 5, 5)},
328 {"gray20", myRGB(51, 51, 51)},
329 {"gray21", myRGB(54, 54, 54)},
330 {"gray22", myRGB(56, 56, 56)},
331 {"gray23", myRGB(59, 59, 59)},
332 {"gray24", myRGB(61, 61, 61)},
333 {"gray25", myRGB(64, 64, 64)},
334 {"gray26", myRGB(66, 66, 66)},
335 {"gray27", myRGB(69, 69, 69)},
336 {"gray28", myRGB(71, 71, 71)},
337 {"gray29", myRGB(74, 74, 74)},
338 {"gray3", myRGB(8, 8, 8)},
339 {"gray30", myRGB(77, 77, 77)},
340 {"gray31", myRGB(79, 79, 79)},
341 {"gray32", myRGB(82, 82, 82)},
342 {"gray33", myRGB(84, 84, 84)},
343 {"gray34", myRGB(87, 87, 87)},
344 {"gray35", myRGB(89, 89, 89)},
345 {"gray36", myRGB(92, 92, 92)},
346 {"gray37", myRGB(94, 94, 94)},
347 {"gray38", myRGB(97, 97, 97)},
348 {"gray39", myRGB(99, 99, 99)},
349 {"gray4", myRGB(10, 10, 10)},
350 {"gray40", myRGB(102, 102, 102)},
351 {"gray41", myRGB(105, 105, 105)},
352 {"gray42", myRGB(107, 107, 107)},
353 {"gray43", myRGB(110, 110, 110)},
354 {"gray44", myRGB(112, 112, 112)},
355 {"gray45", myRGB(115, 115, 115)},
356 {"gray46", myRGB(117, 117, 117)},
357 {"gray47", myRGB(120, 120, 120)},
358 {"gray48", myRGB(122, 122, 122)},
359 {"gray49", myRGB(125, 125, 125)},
360 {"gray5", myRGB(13, 13, 13)},
361 {"gray50", myRGB(127, 127, 127)},
362 {"gray51", myRGB(130, 130, 130)},
363 {"gray52", myRGB(133, 133, 133)},
364 {"gray53", myRGB(135, 135, 135)},
365 {"gray54", myRGB(138, 138, 138)},
366 {"gray55", myRGB(140, 140, 140)},
367 {"gray56", myRGB(143, 143, 143)},
368 {"gray57", myRGB(145, 145, 145)},
369 {"gray58", myRGB(148, 148, 148)},
370 {"gray59", myRGB(150, 150, 150)},
371 {"gray6", myRGB(15, 15, 15)},
372 {"gray60", myRGB(153, 153, 153)},
373 {"gray61", myRGB(156, 156, 156)},
374 {"gray62", myRGB(158, 158, 158)},
375 {"gray63", myRGB(161, 161, 161)},
376 {"gray64", myRGB(163, 163, 163)},
377 {"gray65", myRGB(166, 166, 166)},
378 {"gray66", myRGB(168, 168, 168)},
379 {"gray67", myRGB(171, 171, 171)},
380 {"gray68", myRGB(173, 173, 173)},
381 {"gray69", myRGB(176, 176, 176)},
382 {"gray7", myRGB(18, 18, 18)},
383 {"gray70", myRGB(179, 179, 179)},
384 {"gray71", myRGB(181, 181, 181)},
385 {"gray72", myRGB(184, 184, 184)},
386 {"gray73", myRGB(186, 186, 186)},
387 {"gray74", myRGB(189, 189, 189)},
388 {"gray75", myRGB(191, 191, 191)},
389 {"gray76", myRGB(194, 194, 194)},
390 {"gray77", myRGB(196, 196, 196)},
391 {"gray78", myRGB(199, 199, 199)},
392 {"gray79", myRGB(201, 201, 201)},
393 {"gray8", myRGB(20, 20, 20)},
394 {"gray80", myRGB(204, 204, 204)},
395 {"gray81", myRGB(207, 207, 207)},
396 {"gray82", myRGB(209, 209, 209)},
397 {"gray83", myRGB(212, 212, 212)},
398 {"gray84", myRGB(214, 214, 214)},
399 {"gray85", myRGB(217, 217, 217)},
400 {"gray86", myRGB(219, 219, 219)},
401 {"gray87", myRGB(222, 222, 222)},
402 {"gray88", myRGB(224, 224, 224)},
403 {"gray89", myRGB(227, 227, 227)},
404 {"gray9", myRGB(23, 23, 23)},
405 {"gray90", myRGB(229, 229, 229)},
406 {"gray91", myRGB(232, 232, 232)},
407 {"gray92", myRGB(235, 235, 235)},
408 {"gray93", myRGB(237, 237, 237)},
409 {"gray94", myRGB(240, 240, 240)},
410 {"gray95", myRGB(242, 242, 242)},
411 {"gray96", myRGB(245, 245, 245)},
412 {"gray97", myRGB(247, 247, 247)},
413 {"gray98", myRGB(250, 250, 250)},
414 {"gray99", myRGB(252, 252, 252)},
415 {"green", myRGB(0, 255, 0)},
416 {"greenyellow", myRGB(173, 255, 47)},
417 {"honeydew", myRGB(240, 255, 240)},
418 {"hotpink", myRGB(255, 105, 180)},
419 {"indianred", myRGB(107, 57, 57)},
420 {"ivory", myRGB(255, 255, 240)},
421 {"khaki", myRGB(179, 179, 126)},
422 {"lavender", myRGB(230, 230, 250)},
423 {"lavenderblush", myRGB(255, 240, 245)},
424 {"lawngreen", myRGB(124, 252, 0)},
425 {"lemonchiffon", myRGB(255, 250, 205)},
426 {"lightblue", myRGB(176, 226, 255)},
427 {"lightcoral", myRGB(240, 128, 128)},
428 {"lightcyan", myRGB(224, 255, 255)},
429 {"lightgoldenrod", myRGB(238, 221, 130)},
430 {"lightgoldenrodyellow", myRGB(250, 250, 210)},
431 {"lightgray", myRGB(168, 168, 168)},
432 {"lightpink", myRGB(255, 182, 193)},
433 {"lightsalmon", myRGB(255, 160, 122)},
434 {"lightseagreen", myRGB(32, 178, 170)},
435 {"lightskyblue", myRGB(135, 206, 250)},
436 {"lightslateblue", myRGB(132, 112, 255)},
437 {"lightslategray", myRGB(119, 136, 153)},
438 {"lightsteelblue", myRGB(124, 152, 211)},
439 {"lightyellow", myRGB(255, 255, 224)},
440 {"limegreen", myRGB(0, 175, 20)},
441 {"linen", myRGB(250, 240, 230)},
442 {"magenta", myRGB(255, 0, 255)},
443 {"maroon", myRGB(143, 0, 82)},
444 {"mediumaquamarine", myRGB(0, 147, 143)},
445 {"mediumblue", myRGB(50, 50, 204)},
446 {"mediumforestgreen", myRGB(50, 129, 75)},
447 {"mediumgoldenrod", myRGB(209, 193, 102)},
448 {"mediumorchid", myRGB(189, 82, 189)},
449 {"mediumpurple", myRGB(147, 112, 219)},
450 {"mediumseagreen", myRGB(52, 119, 102)},
451 {"mediumslateblue", myRGB(106, 106, 141)},
452 {"mediumspringgreen", myRGB(35, 142, 35)},
453 {"mediumturquoise", myRGB(0, 210, 210)},
454 {"mediumvioletred", myRGB(213, 32, 121)},
455 {"midnightblue", myRGB(47, 47, 100)},
456 {"mintcream", myRGB(245, 255, 250)},
457 {"mistyrose", myRGB(255, 228, 225)},
458 {"moccasin", myRGB(255, 228, 181)},
459 {"navajowhite", myRGB(255, 222, 173)},
460 {"navy", myRGB(35, 35, 117)},
461 {"navyblue", myRGB(35, 35, 117)},
462 {"oldlace", myRGB(253, 245, 230)},
463 {"olivedrab", myRGB(107, 142, 35)},
464 {"orange", myRGB(255, 135, 0)},
465 {"orangered", myRGB(255, 69, 0)},
466 {"orchid", myRGB(239, 132, 239)},
467 {"palegoldenrod", myRGB(238, 232, 170)},
468 {"palegreen", myRGB(115, 222, 120)},
469 {"paleturquoise", myRGB(175, 238, 238)},
470 {"palevioletred", myRGB(219, 112, 147)},
471 {"papayawhip", myRGB(255, 239, 213)},
472 {"peachpuff", myRGB(255, 218, 185)},
473 {"peru", myRGB(205, 133, 63)},
474 {"pink", myRGB(255, 181, 197)},
475 {"plum", myRGB(197, 72, 155)},
476 {"powderblue", myRGB(176, 224, 230)},
477 {"purple", myRGB(160, 32, 240)},
478 {"red", myRGB(255, 0, 0)},
479 {"rosybrown", myRGB(188, 143, 143)},
480 {"royalblue", myRGB(65, 105, 225)},
481 {"saddlebrown", myRGB(139, 69, 19)},
482 {"salmon", myRGB(233, 150, 122)},
483 {"sandybrown", myRGB(244, 164, 96)},
484 {"seagreen", myRGB(82, 149, 132)},
485 {"seashell", myRGB(255, 245, 238)},
486 {"sienna", myRGB(150, 82, 45)},
487 {"silver", myRGB(192, 192, 192)},
488 {"skyblue", myRGB(114, 159, 255)},
489 {"slateblue", myRGB(126, 136, 171)},
490 {"slategray", myRGB(112, 128, 144)},
491 {"snow", myRGB(255, 250, 250)},
492 {"springgreen", myRGB(65, 172, 65)},
493 {"steelblue", myRGB(84, 112, 170)},
494 {"tan", myRGB(222, 184, 135)},
495 {"thistle", myRGB(216, 191, 216)},
496 {"tomato", myRGB(255, 99, 71)},
497 {"transparent", myRGB(0, 0, 1)},
498 {"turquoise", myRGB(25, 204, 223)},
499 {"violet", myRGB(156, 62, 206)},
500 {"violetred", myRGB(243, 62, 150)},
501 {"wheat", myRGB(245, 222, 179)},
502 {"white", myRGB(255, 255, 255)},
503 {"whitesmoke", myRGB(245, 245, 245)},
504 {"yellow", myRGB(255, 255, 0)},
505 {"yellowgreen", myRGB(50, 216, 56)},
506 {NULL, myRGB(0, 0, 0)}
507 };
508 static int numTheRGBRecords = 235;
509
510 static unsigned char ParseHexadecimal(char digit1, char digit2)
511 {
512 unsigned char i1, i2;
513
514 if (digit1 >= 'a')
515 i1 = (unsigned char)(digit1 - 'a' + 0x0A);
516 else if (digit1 >= 'A')
517 i1 = (unsigned char)(digit1 - 'A' + 0x0A);
518 else
519 i1 = (unsigned char)(digit1 - '0');
520 if (digit2 >= 'a')
521 i2 = (unsigned char)(digit2 - 'a' + 0x0A);
522 else if (digit2 >= 'A')
523 i2 = (unsigned char)(digit2 - 'A' + 0x0A);
524 else
525 i2 = (unsigned char)(digit2 - '0');
526 return (unsigned char)(0x10 * i1 + i2);
527 }
528
529 static bool GetRGBFromName(const char *inname, bool *isNone,
530 unsigned char *r, unsigned char*g, unsigned char *b)
531 {
532 int left, right, middle;
533 int cmp;
534 wxUint32 rgbVal;
535 char *name;
536 char *grey, *p;
537
538 // Neither #rrggbb nor #rrrrggggbbbb are in database, we parse them directly
539 size_t inname_len = strlen(inname);
540 if ( *inname == '#' && (inname_len == 7 || inname_len == 13))
541 {
542 size_t ofs = (inname_len == 7) ? 2 : 4;
543 *r = ParseHexadecimal(inname[1], inname[2]);
544 *g = ParseHexadecimal(inname[1*ofs+1], inname[1*ofs+2]);
545 *b = ParseHexadecimal(inname[2*ofs+1], inname[2*ofs+2]);
546 *isNone = false;
547 return true;
548 }
549
550 name = wxStrdupA(inname);
551
552 // theRGBRecords[] has no names with spaces, and no grey, but a
553 // lot of gray...
554
555 // so first extract ' '
556 while ((p = strchr(name, ' ')) != NULL)
557 {
558 while (*(p)) // till eof of string
559 {
560 *p = *(p + 1); // copy to the left
561 p++;
562 }
563 }
564 // fold to lower case
565 p = name;
566 while (*p)
567 {
568 *p = (char)tolower(*p);
569 p++;
570 }
571
572 // substitute Grey with Gray, else rgbtab.h would have more than 100
573 // 'duplicate' entries
574 if ( (grey = strstr(name, "grey")) != NULL )
575 grey[2] = 'a';
576
577 // check for special 'none' colour:
578 bool found;
579 if ( strcmp(name, "none") == 0 )
580 {
581 *isNone = true;
582 found = true;
583 }
584 else // not "None"
585 {
586 found = false;
587
588 // binary search:
589 left = 0;
590 right = numTheRGBRecords - 1;
591 do
592 {
593 middle = (left + right) / 2;
594 cmp = strcmp(name, theRGBRecords[middle].name);
595 if ( cmp == 0 )
596 {
597 rgbVal = theRGBRecords[middle].rgb;
598 *r = (unsigned char)((rgbVal >> 16) & 0xFF);
599 *g = (unsigned char)((rgbVal >> 8) & 0xFF);
600 *b = (unsigned char)((rgbVal) & 0xFF);
601 *isNone = false;
602 found = true;
603 break;
604 }
605 else if ( cmp < 0 )
606 {
607 right = middle - 1;
608 }
609 else // cmp > 0
610 {
611 left = middle + 1;
612 }
613 } while (left <= right);
614 }
615
616 free(name);
617
618 return found;
619 }
620
621 static const char *ParseColor(const char *data)
622 {
623 static const char *targets[] =
624 {"c ", "g ", "g4 ", "m ", "b ", "s ", NULL};
625
626 const char *p, *r;
627 const char *q;
628 int i;
629
630 for (i = 0; targets[i] != NULL; i++)
631 {
632 r = data;
633 for (q = targets[i]; *r != '\0'; r++)
634 {
635 if ( *r != *q )
636 continue;
637 if ( !isspace((int) (*(r - 1))) )
638 continue;
639 p = r;
640 for (;;)
641 {
642 if ( *q == '\0' )
643 return p;
644 if ( *p++ != *q++ )
645 break;
646 }
647 q = targets[i];
648 }
649 }
650 return NULL;
651 }
652
653 struct wxXPMColourMapData
654 {
655 wxXPMColourMapData() { R = G = B = 0; }
656 unsigned char R,G,B;
657 };
658 WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap);
659
660 wxImage wxXPMDecoder::ReadData(const char* const* xpm_data)
661 {
662 wxCHECK_MSG(xpm_data, wxNullImage, wxT("NULL 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 wxXPMColourMap clr_tbl;
672 wxXPMColourMap::iterator it;
673 wxString maskKey;
674
675 /*
676 * Read hints and initialize structures:
677 */
678
679 count = sscanf(xpm_data[0], "%u %u %u %u",
680 &width, &height, &colors_cnt, &chars_per_pixel);
681 if ( count != 4 || width * height * colors_cnt == 0 )
682 {
683 wxLogError(_("XPM: incorrect header format!"));
684 return wxNullImage;
685 }
686
687 // VS: XPM color map this large would be insane, since XPMs are encoded with
688 // 92 possible values on each position, 92^64 is *way* larger space than
689 // 8bit RGB...
690 wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
691
692 if ( !img.Create(width, height) )
693 return wxNullImage;
694
695 img.SetMask(false);
696 key[chars_per_pixel] = wxT('\0');
697 hasMask = false;
698
699 /*
700 * Create colour map:
701 */
702 wxXPMColourMapData clr_data;
703 for (i = 0; i < colors_cnt; i++)
704 {
705 const char *xmpColLine = xpm_data[1 + i];
706
707 // we must have at least " x y" after the colour index, hence +5
708 if ( !xmpColLine || strlen(xmpColLine) < chars_per_pixel + 5 )
709 {
710 wxLogError(_("XPM: incorrect colour description in line %d"),
711 (int)(1 + i));
712 return wxNullImage;
713 }
714
715 for (i_key = 0; i_key < chars_per_pixel; i_key++)
716 key[i_key] = (wxChar)xmpColLine[i_key];
717 clr_def = ParseColor(xmpColLine + chars_per_pixel);
718
719 if ( clr_def == NULL )
720 {
721 wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
722 xmpColLine, (int)(1 + i));
723 return wxNullImage;
724 }
725
726 bool isNone = false;
727 if ( !GetRGBFromName(clr_def, &isNone,
728 &clr_data.R, &clr_data.G, &clr_data.B) )
729 {
730 wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
731 xmpColLine, (int)(1 + i));
732 return wxNullImage;
733 }
734
735 if ( isNone )
736 {
737 img.SetMask(true);
738 img.SetMaskColour(255, 0, 255);
739 clr_data.R =
740 clr_data.B = 255;
741 clr_data.G = 0;
742 hasMask = true;
743 maskKey = key;
744 }
745
746 clr_tbl[key] = clr_data;
747 }
748
749 /*
750 * Modify colour entries with RGB = (255,0,255) to (255,0,254) if
751 * mask colour is present (so that existing pixels with (255,0,255)
752 * magenta colour are not incorrectly made transparent):
753 */
754 if (hasMask)
755 {
756 for (it = clr_tbl.begin(); it != clr_tbl.end(); ++it)
757 {
758 if (it->second.R == 255 && it->second.G == 0 &&
759 it->second.B == 255 &&
760 it->first != maskKey)
761 {
762 it->second.B = 254;
763 }
764 }
765 }
766
767 /*
768 * Parse image data:
769 */
770
771 unsigned char *img_data = img.GetData();
772 wxXPMColourMap::iterator entry;
773 wxXPMColourMap::iterator end = clr_tbl.end();
774
775 for (j = 0; j < height; j++)
776 {
777 for (i = 0; i < width; i++, img_data += 3)
778 {
779 const char *xpmImgLine = xpm_data[1 + colors_cnt + j];
780 if ( !xpmImgLine || strlen(xpmImgLine) < width*chars_per_pixel )
781 {
782 wxLogError(_("XPM: truncated image data at line %d!"),
783 (int)(1 + colors_cnt + j));
784 return wxNullImage;
785 }
786
787 for (i_key = 0; i_key < chars_per_pixel; i_key++)
788 {
789 key[i_key] = (wxChar)xpmImgLine[chars_per_pixel * i + i_key];
790 }
791
792 entry = clr_tbl.find(key);
793 if ( entry == end )
794 {
795 wxLogError(_("XPM: Malformed pixel data!"));
796
797 // better return right now as otherwise we risk to flood the
798 // user with error messages as something seems to be seriously
799 // wrong with the file and so we could give this message for
800 // each remaining pixel if we don't bail out
801 return wxNullImage;
802 }
803 else
804 {
805 img_data[0] = entry->second.R;
806 img_data[1] = entry->second.G;
807 img_data[2] = entry->second.B;
808 }
809 }
810 }
811
812 #if wxUSE_PALETTE
813 unsigned char* r = new unsigned char[colors_cnt];
814 unsigned char* g = new unsigned char[colors_cnt];
815 unsigned char* b = new unsigned char[colors_cnt];
816
817 for (it = clr_tbl.begin(), i = 0; it != clr_tbl.end(); it++, i++)
818 {
819 r[i] = it->second.R;
820 g[i] = it->second.G;
821 b[i] = it->second.B;
822 }
823 wxASSERT(i == colors_cnt);
824 img.SetPalette(wxPalette(colors_cnt, r, g, b));
825 delete[] r;
826 delete[] g;
827 delete[] b;
828 #endif // wxUSE_PALETTE
829
830 return img;
831 }
832
833 #endif // wxUSE_IMAGE && wxUSE_XPM

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