src/common/xpmdecod.cpp

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