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Compilation fix for r74440 and STL builds.
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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/common/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// 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
118bool wxXPMDecoder::CanRead(wxInputStream& stream)
119{
120 unsigned char buf[9];
121
122 if ( !stream.Read(buf, WXSIZEOF(buf)) )
123 return false;
124
125 return memcmp(buf, "/* XPM */", WXSIZEOF(buf)) == 0;
126}
127
128wxImage wxXPMDecoder::ReadFile(wxInputStream& stream)
129{
130 size_t length = stream.GetSize();
131 wxCHECK_MSG( length != 0, wxNullImage,
132 wxT("Cannot read XPM from stream of unknown size") );
133
134 // use a smart buffer to be sure to free memory even when we return on
135 // error
136 wxCharBuffer buffer(length);
137
138 char *xpm_buffer = (char *)buffer.data();
139 if ( stream.Read(xpm_buffer, length).GetLastError() == wxSTREAM_READ_ERROR )
140 return wxNullImage;
141 xpm_buffer[length] = '\0';
142
143 /*
144 * Remove comments from the file:
145 */
146 char *p, *q;
147 for (p = xpm_buffer; *p != '\0'; p++)
148 {
149 if ( (*p == '"') || (*p == '\'') )
150 {
151 if (*p == '"')
152 {
153 for (p++; *p != '\0'; p++)
154 if ( (*p == '"') && (*(p - 1) != '\\') )
155 break;
156 }
157 else // *p == '\''
158 {
159 for (p++; *p != '\0'; p++)
160 if ( (*p == '\'') && (*(p - 1) != '\\') )
161 break;
162 }
163 if (*p == '\0')
164 break;
165 continue;
166 }
167 if ( (*p != '/') || (*(p + 1) != '*') )
168 continue;
169 for (q = p + 2; *q != '\0'; q++)
170 {
171 if ( (*q == '*') && (*(q + 1) == '/') )
172 break;
173 }
174
175 // memmove allows overlaps (unlike strcpy):
176 size_t cpylen = strlen(q + 2) + 1;
177 memmove(p, q + 2, cpylen);
178 }
179
180 /*
181 * Remove unquoted characters:
182 */
183 size_t i = 0;
184 for (p = xpm_buffer; *p != '\0'; p++)
185 {
186 if ( *p != '"' )
187 continue;
188 for (q = p + 1; *q != '\0'; q++)
189 if (*q == '"')
190 break;
191 strncpy(xpm_buffer + i, p + 1, q - p - 1);
192 i += q - p - 1;
193 xpm_buffer[i++] = '\n';
194 p = q + 1;
195 }
196 xpm_buffer[i] = '\0';
197
198 /*
199 * Create array of lines and convert \n's to \0's:
200 */
201 const char **xpm_lines;
202 size_t lines_cnt = 0;
203 size_t line;
204
205 for (p = xpm_buffer; *p != '\0'; p++)
206 {
207 if ( *p == '\n' )
208 lines_cnt++;
209 }
210
211 if ( !lines_cnt )
212 {
213 // this doesn't really look an XPM image
214 return wxNullImage;
215 }
216
217 xpm_lines = new const char*[lines_cnt + 1];
218 xpm_lines[0] = xpm_buffer;
219 line = 1;
220 for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
221 {
222 if ( *p == '\n' )
223 {
224 xpm_lines[line] = p + 1;
225 *p = '\0';
226 line++;
227 }
228 }
229
230 xpm_lines[lines_cnt] = NULL;
231
232 /*
233 * Read the image:
234 */
235 wxImage img = ReadData(xpm_lines);
236
237 delete[] xpm_lines;
238
239 return img;
240}
241#endif // wxUSE_STREAMS
242
243
244/*****************************************************************************\
245* rgbtab.h *
246* *
247* A hard coded rgb.txt. To keep it short I removed all colornames with *
248* trailing numbers, Blue3 etc, except the GrayXX. Sorry Grey-lovers I prefer *
249* Gray ;-). But Grey is recognized on lookups, only on save Gray will be *
250* used, maybe you want to do some substitue there too. *
251* *
252* To save memory the RGBs are coded in one long value, as done by the RGB *
253* macro. *
254* *
255* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
256\*****************************************************************************/
257
258
259typedef struct
260{
261 const char *name;
262 wxUint32 rgb;
263} rgbRecord;
264
265#define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
266
267static const rgbRecord theRGBRecords[] =
268{
269 {"aliceblue", myRGB(240, 248, 255)},
270 {"antiquewhite", myRGB(250, 235, 215)},
271 {"aquamarine", myRGB(50, 191, 193)},
272 {"azure", myRGB(240, 255, 255)},
273 {"beige", myRGB(245, 245, 220)},
274 {"bisque", myRGB(255, 228, 196)},
275 {"black", myRGB(0, 0, 0)},
276 {"blanchedalmond", myRGB(255, 235, 205)},
277 {"blue", myRGB(0, 0, 255)},
278 {"blueviolet", myRGB(138, 43, 226)},
279 {"brown", myRGB(165, 42, 42)},
280 {"burlywood", myRGB(222, 184, 135)},
281 {"cadetblue", myRGB(95, 146, 158)},
282 {"chartreuse", myRGB(127, 255, 0)},
283 {"chocolate", myRGB(210, 105, 30)},
284 {"coral", myRGB(255, 114, 86)},
285 {"cornflowerblue", myRGB(34, 34, 152)},
286 {"cornsilk", myRGB(255, 248, 220)},
287 {"cyan", myRGB(0, 255, 255)},
288 {"darkgoldenrod", myRGB(184, 134, 11)},
289 {"darkgreen", myRGB(0, 86, 45)},
290 {"darkkhaki", myRGB(189, 183, 107)},
291 {"darkolivegreen", myRGB(85, 86, 47)},
292 {"darkorange", myRGB(255, 140, 0)},
293 {"darkorchid", myRGB(139, 32, 139)},
294 {"darksalmon", myRGB(233, 150, 122)},
295 {"darkseagreen", myRGB(143, 188, 143)},
296 {"darkslateblue", myRGB(56, 75, 102)},
297 {"darkslategray", myRGB(47, 79, 79)},
298 {"darkturquoise", myRGB(0, 166, 166)},
299 {"darkviolet", myRGB(148, 0, 211)},
300 {"deeppink", myRGB(255, 20, 147)},
301 {"deepskyblue", myRGB(0, 191, 255)},
302 {"dimgray", myRGB(84, 84, 84)},
303 {"dodgerblue", myRGB(30, 144, 255)},
304 {"firebrick", myRGB(142, 35, 35)},
305 {"floralwhite", myRGB(255, 250, 240)},
306 {"forestgreen", myRGB(80, 159, 105)},
307 {"gainsboro", myRGB(220, 220, 220)},
308 {"ghostwhite", myRGB(248, 248, 255)},
309 {"gold", myRGB(218, 170, 0)},
310 {"goldenrod", myRGB(239, 223, 132)},
311 {"gray", myRGB(126, 126, 126)},
312 {"gray0", myRGB(0, 0, 0)},
313 {"gray1", myRGB(3, 3, 3)},
314 {"gray10", myRGB(26, 26, 26)},
315 {"gray100", myRGB(255, 255, 255)},
316 {"gray11", myRGB(28, 28, 28)},
317 {"gray12", myRGB(31, 31, 31)},
318 {"gray13", myRGB(33, 33, 33)},
319 {"gray14", myRGB(36, 36, 36)},
320 {"gray15", myRGB(38, 38, 38)},
321 {"gray16", myRGB(41, 41, 41)},
322 {"gray17", myRGB(43, 43, 43)},
323 {"gray18", myRGB(46, 46, 46)},
324 {"gray19", myRGB(48, 48, 48)},
325 {"gray2", myRGB(5, 5, 5)},
326 {"gray20", myRGB(51, 51, 51)},
327 {"gray21", myRGB(54, 54, 54)},
328 {"gray22", myRGB(56, 56, 56)},
329 {"gray23", myRGB(59, 59, 59)},
330 {"gray24", myRGB(61, 61, 61)},
331 {"gray25", myRGB(64, 64, 64)},
332 {"gray26", myRGB(66, 66, 66)},
333 {"gray27", myRGB(69, 69, 69)},
334 {"gray28", myRGB(71, 71, 71)},
335 {"gray29", myRGB(74, 74, 74)},
336 {"gray3", myRGB(8, 8, 8)},
337 {"gray30", myRGB(77, 77, 77)},
338 {"gray31", myRGB(79, 79, 79)},
339 {"gray32", myRGB(82, 82, 82)},
340 {"gray33", myRGB(84, 84, 84)},
341 {"gray34", myRGB(87, 87, 87)},
342 {"gray35", myRGB(89, 89, 89)},
343 {"gray36", myRGB(92, 92, 92)},
344 {"gray37", myRGB(94, 94, 94)},
345 {"gray38", myRGB(97, 97, 97)},
346 {"gray39", myRGB(99, 99, 99)},
347 {"gray4", myRGB(10, 10, 10)},
348 {"gray40", myRGB(102, 102, 102)},
349 {"gray41", myRGB(105, 105, 105)},
350 {"gray42", myRGB(107, 107, 107)},
351 {"gray43", myRGB(110, 110, 110)},
352 {"gray44", myRGB(112, 112, 112)},
353 {"gray45", myRGB(115, 115, 115)},
354 {"gray46", myRGB(117, 117, 117)},
355 {"gray47", myRGB(120, 120, 120)},
356 {"gray48", myRGB(122, 122, 122)},
357 {"gray49", myRGB(125, 125, 125)},
358 {"gray5", myRGB(13, 13, 13)},
359 {"gray50", myRGB(127, 127, 127)},
360 {"gray51", myRGB(130, 130, 130)},
361 {"gray52", myRGB(133, 133, 133)},
362 {"gray53", myRGB(135, 135, 135)},
363 {"gray54", myRGB(138, 138, 138)},
364 {"gray55", myRGB(140, 140, 140)},
365 {"gray56", myRGB(143, 143, 143)},
366 {"gray57", myRGB(145, 145, 145)},
367 {"gray58", myRGB(148, 148, 148)},
368 {"gray59", myRGB(150, 150, 150)},
369 {"gray6", myRGB(15, 15, 15)},
370 {"gray60", myRGB(153, 153, 153)},
371 {"gray61", myRGB(156, 156, 156)},
372 {"gray62", myRGB(158, 158, 158)},
373 {"gray63", myRGB(161, 161, 161)},
374 {"gray64", myRGB(163, 163, 163)},
375 {"gray65", myRGB(166, 166, 166)},
376 {"gray66", myRGB(168, 168, 168)},
377 {"gray67", myRGB(171, 171, 171)},
378 {"gray68", myRGB(173, 173, 173)},
379 {"gray69", myRGB(176, 176, 176)},
380 {"gray7", myRGB(18, 18, 18)},
381 {"gray70", myRGB(179, 179, 179)},
382 {"gray71", myRGB(181, 181, 181)},
383 {"gray72", myRGB(184, 184, 184)},
384 {"gray73", myRGB(186, 186, 186)},
385 {"gray74", myRGB(189, 189, 189)},
386 {"gray75", myRGB(191, 191, 191)},
387 {"gray76", myRGB(194, 194, 194)},
388 {"gray77", myRGB(196, 196, 196)},
389 {"gray78", myRGB(199, 199, 199)},
390 {"gray79", myRGB(201, 201, 201)},
391 {"gray8", myRGB(20, 20, 20)},
392 {"gray80", myRGB(204, 204, 204)},
393 {"gray81", myRGB(207, 207, 207)},
394 {"gray82", myRGB(209, 209, 209)},
395 {"gray83", myRGB(212, 212, 212)},
396 {"gray84", myRGB(214, 214, 214)},
397 {"gray85", myRGB(217, 217, 217)},
398 {"gray86", myRGB(219, 219, 219)},
399 {"gray87", myRGB(222, 222, 222)},
400 {"gray88", myRGB(224, 224, 224)},
401 {"gray89", myRGB(227, 227, 227)},
402 {"gray9", myRGB(23, 23, 23)},
403 {"gray90", myRGB(229, 229, 229)},
404 {"gray91", myRGB(232, 232, 232)},
405 {"gray92", myRGB(235, 235, 235)},
406 {"gray93", myRGB(237, 237, 237)},
407 {"gray94", myRGB(240, 240, 240)},
408 {"gray95", myRGB(242, 242, 242)},
409 {"gray96", myRGB(245, 245, 245)},
410 {"gray97", myRGB(247, 247, 247)},
411 {"gray98", myRGB(250, 250, 250)},
412 {"gray99", myRGB(252, 252, 252)},
413 {"green", myRGB(0, 255, 0)},
414 {"greenyellow", myRGB(173, 255, 47)},
415 {"honeydew", myRGB(240, 255, 240)},
416 {"hotpink", myRGB(255, 105, 180)},
417 {"indianred", myRGB(107, 57, 57)},
418 {"ivory", myRGB(255, 255, 240)},
419 {"khaki", myRGB(179, 179, 126)},
420 {"lavender", myRGB(230, 230, 250)},
421 {"lavenderblush", myRGB(255, 240, 245)},
422 {"lawngreen", myRGB(124, 252, 0)},
423 {"lemonchiffon", myRGB(255, 250, 205)},
424 {"lightblue", myRGB(176, 226, 255)},
425 {"lightcoral", myRGB(240, 128, 128)},
426 {"lightcyan", myRGB(224, 255, 255)},
427 {"lightgoldenrod", myRGB(238, 221, 130)},
428 {"lightgoldenrodyellow", myRGB(250, 250, 210)},
429 {"lightgray", myRGB(168, 168, 168)},
430 {"lightpink", myRGB(255, 182, 193)},
431 {"lightsalmon", myRGB(255, 160, 122)},
432 {"lightseagreen", myRGB(32, 178, 170)},
433 {"lightskyblue", myRGB(135, 206, 250)},
434 {"lightslateblue", myRGB(132, 112, 255)},
435 {"lightslategray", myRGB(119, 136, 153)},
436 {"lightsteelblue", myRGB(124, 152, 211)},
437 {"lightyellow", myRGB(255, 255, 224)},
438 {"limegreen", myRGB(0, 175, 20)},
439 {"linen", myRGB(250, 240, 230)},
440 {"magenta", myRGB(255, 0, 255)},
441 {"maroon", myRGB(143, 0, 82)},
442 {"mediumaquamarine", myRGB(0, 147, 143)},
443 {"mediumblue", myRGB(50, 50, 204)},
444 {"mediumforestgreen", myRGB(50, 129, 75)},
445 {"mediumgoldenrod", myRGB(209, 193, 102)},
446 {"mediumorchid", myRGB(189, 82, 189)},
447 {"mediumpurple", myRGB(147, 112, 219)},
448 {"mediumseagreen", myRGB(52, 119, 102)},
449 {"mediumslateblue", myRGB(106, 106, 141)},
450 {"mediumspringgreen", myRGB(35, 142, 35)},
451 {"mediumturquoise", myRGB(0, 210, 210)},
452 {"mediumvioletred", myRGB(213, 32, 121)},
453 {"midnightblue", myRGB(47, 47, 100)},
454 {"mintcream", myRGB(245, 255, 250)},
455 {"mistyrose", myRGB(255, 228, 225)},
456 {"moccasin", myRGB(255, 228, 181)},
457 {"navajowhite", myRGB(255, 222, 173)},
458 {"navy", myRGB(35, 35, 117)},
459 {"navyblue", myRGB(35, 35, 117)},
460 {"oldlace", myRGB(253, 245, 230)},
461 {"olivedrab", myRGB(107, 142, 35)},
462 {"orange", myRGB(255, 135, 0)},
463 {"orangered", myRGB(255, 69, 0)},
464 {"orchid", myRGB(239, 132, 239)},
465 {"palegoldenrod", myRGB(238, 232, 170)},
466 {"palegreen", myRGB(115, 222, 120)},
467 {"paleturquoise", myRGB(175, 238, 238)},
468 {"palevioletred", myRGB(219, 112, 147)},
469 {"papayawhip", myRGB(255, 239, 213)},
470 {"peachpuff", myRGB(255, 218, 185)},
471 {"peru", myRGB(205, 133, 63)},
472 {"pink", myRGB(255, 181, 197)},
473 {"plum", myRGB(197, 72, 155)},
474 {"powderblue", myRGB(176, 224, 230)},
475 {"purple", myRGB(160, 32, 240)},
476 {"red", myRGB(255, 0, 0)},
477 {"rosybrown", myRGB(188, 143, 143)},
478 {"royalblue", myRGB(65, 105, 225)},
479 {"saddlebrown", myRGB(139, 69, 19)},
480 {"salmon", myRGB(233, 150, 122)},
481 {"sandybrown", myRGB(244, 164, 96)},
482 {"seagreen", myRGB(82, 149, 132)},
483 {"seashell", myRGB(255, 245, 238)},
484 {"sienna", myRGB(150, 82, 45)},
485 {"silver", myRGB(192, 192, 192)},
486 {"skyblue", myRGB(114, 159, 255)},
487 {"slateblue", myRGB(126, 136, 171)},
488 {"slategray", myRGB(112, 128, 144)},
489 {"snow", myRGB(255, 250, 250)},
490 {"springgreen", myRGB(65, 172, 65)},
491 {"steelblue", myRGB(84, 112, 170)},
492 {"tan", myRGB(222, 184, 135)},
493 {"thistle", myRGB(216, 191, 216)},
494 {"tomato", myRGB(255, 99, 71)},
495 {"transparent", myRGB(0, 0, 1)},
496 {"turquoise", myRGB(25, 204, 223)},
497 {"violet", myRGB(156, 62, 206)},
498 {"violetred", myRGB(243, 62, 150)},
499 {"wheat", myRGB(245, 222, 179)},
500 {"white", myRGB(255, 255, 255)},
501 {"whitesmoke", myRGB(245, 245, 245)},
502 {"yellow", myRGB(255, 255, 0)},
503 {"yellowgreen", myRGB(50, 216, 56)},
504 {NULL, myRGB(0, 0, 0)}
505};
506static const int numTheRGBRecords = 235;
507
508static unsigned char ParseHexadecimal(char digit1, char digit2)
509{
510 unsigned char i1, i2;
511
512 if (digit1 >= 'a')
513 i1 = (unsigned char)(digit1 - 'a' + 0x0A);
514 else if (digit1 >= 'A')
515 i1 = (unsigned char)(digit1 - 'A' + 0x0A);
516 else
517 i1 = (unsigned char)(digit1 - '0');
518 if (digit2 >= 'a')
519 i2 = (unsigned char)(digit2 - 'a' + 0x0A);
520 else if (digit2 >= 'A')
521 i2 = (unsigned char)(digit2 - 'A' + 0x0A);
522 else
523 i2 = (unsigned char)(digit2 - '0');
524 return (unsigned char)(0x10 * i1 + i2);
525}
526
527static bool GetRGBFromName(const char *inname, bool *isNone,
528 unsigned char *r, unsigned char*g, unsigned char *b)
529{
530 int left, right, middle;
531 int cmp;
532 wxUint32 rgbVal;
533 char *name;
534 char *grey, *p;
535
536 // Neither #rrggbb nor #rrrrggggbbbb are in database, we parse them directly
537 size_t inname_len = strlen(inname);
538 if ( *inname == '#' && (inname_len == 7 || inname_len == 13))
539 {
540 size_t ofs = (inname_len == 7) ? 2 : 4;
541 *r = ParseHexadecimal(inname[1], inname[2]);
542 *g = ParseHexadecimal(inname[1*ofs+1], inname[1*ofs+2]);
543 *b = ParseHexadecimal(inname[2*ofs+1], inname[2*ofs+2]);
544 *isNone = false;
545 return true;
546 }
547
548 name = wxStrdupA(inname);
549
550 // theRGBRecords[] has no names with spaces, and no grey, but a
551 // lot of gray...
552
553 // so first extract ' '
554 while ((p = strchr(name, ' ')) != NULL)
555 {
556 while (*(p)) // till eof of string
557 {
558 *p = *(p + 1); // copy to the left
559 p++;
560 }
561 }
562 // fold to lower case
563 p = name;
564 while (*p)
565 {
566 *p = (char)tolower(*p);
567 p++;
568 }
569
570 // substitute Grey with Gray, else rgbtab.h would have more than 100
571 // 'duplicate' entries
572 if ( (grey = strstr(name, "grey")) != NULL )
573 grey[2] = 'a';
574
575 // check for special 'none' colour:
576 bool found;
577 if ( strcmp(name, "none") == 0 )
578 {
579 *isNone = true;
580 found = true;
581 }
582 else // not "None"
583 {
584 found = false;
585
586 // binary search:
587 left = 0;
588 right = numTheRGBRecords - 1;
589 do
590 {
591 middle = (left + right) / 2;
592 cmp = strcmp(name, theRGBRecords[middle].name);
593 if ( cmp == 0 )
594 {
595 rgbVal = theRGBRecords[middle].rgb;
596 *r = (unsigned char)((rgbVal >> 16) & 0xFF);
597 *g = (unsigned char)((rgbVal >> 8) & 0xFF);
598 *b = (unsigned char)((rgbVal) & 0xFF);
599 *isNone = false;
600 found = true;
601 break;
602 }
603 else if ( cmp < 0 )
604 {
605 right = middle - 1;
606 }
607 else // cmp > 0
608 {
609 left = middle + 1;
610 }
611 } while (left <= right);
612 }
613
614 free(name);
615
616 return found;
617}
618
619static const char *ParseColor(const char *data)
620{
621 static const char *const targets[] =
622 {"c ", "g ", "g4 ", "m ", "b ", "s ", NULL};
623
624 const char *p, *r;
625 const char *q;
626 int i;
627
628 for (i = 0; targets[i] != NULL; i++)
629 {
630 r = data;
631 for (q = targets[i]; *r != '\0'; r++)
632 {
633 if ( *r != *q )
634 continue;
635 if ( !isspace((int) (*(r - 1))) )
636 continue;
637 p = r;
638 for (;;)
639 {
640 if ( *q == '\0' )
641 return p;
642 if ( *p++ != *q++ )
643 break;
644 }
645 q = targets[i];
646 }
647 }
648 return NULL;
649}
650
651struct wxXPMColourMapData
652{
653 wxXPMColourMapData() { R = G = B = 0; }
654 unsigned char R,G,B;
655};
656WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap);
657
658wxImage wxXPMDecoder::ReadData(const char* const* xpm_data)
659{
660 wxCHECK_MSG(xpm_data, wxNullImage, wxT("NULL XPM data") );
661
662 wxImage img;
663 int count;
664 unsigned width, height, colors_cnt, chars_per_pixel;
665 size_t i, j, i_key;
666 char key[64];
667 const char *clr_def;
668 wxXPMColourMap clr_tbl;
669 wxXPMColourMap::iterator it;
670 wxString maskKey;
671 wxString keyString;
672
673 /*
674 * Read hints and initialize structures:
675 */
676
677 count = sscanf(xpm_data[0], "%u %u %u %u",
678 &width, &height, &colors_cnt, &chars_per_pixel);
679 if ( count != 4 || width * height * colors_cnt == 0 )
680 {
681 wxLogError(_("XPM: incorrect header format!"));
682 return wxNullImage;
683 }
684
685 // VS: XPM color map this large would be insane, since XPMs are encoded with
686 // 92 possible values on each position, 92^64 is *way* larger space than
687 // 8bit RGB...
688 wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
689
690 if (!img.Create(width, height, false))
691 return wxNullImage;
692
693 key[chars_per_pixel] = '\0';
694
695 /*
696 * Create colour map:
697 */
698 wxXPMColourMapData clr_data;
699 for (i = 0; i < colors_cnt; i++)
700 {
701 const char *xmpColLine = xpm_data[1 + i];
702
703 // we must have at least " x y" after the colour index, hence +5
704 if ( !xmpColLine || strlen(xmpColLine) < chars_per_pixel + 5 )
705 {
706 wxLogError(_("XPM: incorrect colour description in line %d"),
707 (int)(1 + i));
708 return wxNullImage;
709 }
710
711 for (i_key = 0; i_key < chars_per_pixel; i_key++)
712 key[i_key] = xmpColLine[i_key];
713 clr_def = ParseColor(xmpColLine + chars_per_pixel);
714
715 if ( clr_def == NULL )
716 {
717 wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
718 xmpColLine, (int)(1 + i));
719 return wxNullImage;
720 }
721
722 bool isNone = false;
723 if ( !GetRGBFromName(clr_def, &isNone,
724 &clr_data.R, &clr_data.G, &clr_data.B) )
725 {
726 wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
727 xmpColLine, (int)(1 + i));
728 return wxNullImage;
729 }
730
731 keyString = key;
732 if ( isNone )
733 maskKey = keyString;
734
735 clr_tbl[keyString] = clr_data;
736 }
737
738 // deal with the mask: we must replace pseudo-colour "None" with the mask
739 // colour (which can be any colour not otherwise used in the image)
740 if (!maskKey.empty())
741 {
742 wxLongToLongHashMap rgb_table;
743 long rgb;
744 const size_t n = clr_tbl.size();
745 wxXPMColourMap::const_iterator iter = clr_tbl.begin();
746 for (i = 0; i < n; ++i, ++iter)
747 {
748 const wxXPMColourMapData& data = iter->second;
749 rgb = (data.R << 16) + (data.G << 8) + data.B;
750 rgb_table[rgb];
751 }
752 for (rgb = 0; rgb <= 0xffffff && rgb_table.count(rgb); ++rgb)
753 ;
754 if (rgb > 0xffffff)
755 {
756 wxLogError(_("XPM: no colors left to use for mask!"));
757 return wxNullImage;
758 }
759
760 wxXPMColourMapData& maskData = clr_tbl[maskKey];
761 maskData.R = wxByte(rgb >> 16);
762 maskData.G = wxByte(rgb >> 8);
763 maskData.B = wxByte(rgb);
764
765 img.SetMaskColour(maskData.R, maskData.G, maskData.B);
766 }
767
768 /*
769 * Parse image data:
770 */
771
772 unsigned char *img_data = img.GetData();
773 wxXPMColourMap::iterator entry;
774 wxXPMColourMap::iterator end = clr_tbl.end();
775
776 for (j = 0; j < height; j++)
777 {
778 for (i = 0; i < width; i++, img_data += 3)
779 {
780 const char *xpmImgLine = xpm_data[1 + colors_cnt + j];
781 if ( !xpmImgLine || strlen(xpmImgLine) < width*chars_per_pixel )
782 {
783 wxLogError(_("XPM: truncated image data at line %d!"),
784 (int)(1 + colors_cnt + j));
785 return wxNullImage;
786 }
787
788 for (i_key = 0; i_key < chars_per_pixel; i_key++)
789 {
790 key[i_key] = xpmImgLine[chars_per_pixel * i + i_key];
791 }
792
793 keyString = key;
794 entry = clr_tbl.find(keyString);
795 if ( entry == end )
796 {
797 wxLogError(_("XPM: Malformed pixel data!"));
798
799 // better return right now as otherwise we risk to flood the
800 // user with error messages as something seems to be seriously
801 // wrong with the file and so we could give this message for
802 // each remaining pixel if we don't bail out
803 return wxNullImage;
804 }
805
806 img_data[0] = entry->second.R;
807 img_data[1] = entry->second.G;
808 img_data[2] = entry->second.B;
809 }
810 }
811#if wxUSE_PALETTE
812 unsigned char* r = new unsigned char[colors_cnt];
813 unsigned char* g = new unsigned char[colors_cnt];
814 unsigned char* b = new unsigned char[colors_cnt];
815
816 for (it = clr_tbl.begin(), i = 0; it != clr_tbl.end(); it++, i++)
817 {
818 r[i] = it->second.R;
819 g[i] = it->second.G;
820 b[i] = it->second.B;
821 }
822 wxASSERT(i == colors_cnt);
823 img.SetPalette(wxPalette(colors_cnt, r, g, b));
824 delete[] r;
825 delete[] g;
826 delete[] b;
827#endif // wxUSE_PALETTE
828 return img;
829}
830
831#endif // wxUSE_IMAGE && wxUSE_XPM
wxWidgets (Impactor)