cgit.sxemacs.org Git - sxemacs/blob - src/ui/X11/xmu.c

   1 /* This file contains compatibility routines for systems without Xmu.
   2  * You would be better served by installing Xmu on your machine or
   3  * yelling at your vendor to ship it.
   4  */
   5
   6 /* XEmacs changes: rindex -> strrchr */
   7
   8 /* Synched up with: Not in FSF. */
   9
  10 #include <config.h>
  11
  12 #ifndef HAVE_XMU
  13 /*
  14  * Copyright 1989 Massachusetts Institute of Technology
  15  *
  16  * Permission to use, copy, modify, and distribute this software and its
  17  * documentation for any purpose and without fee is hereby granted, provided
  18  * that the above copyright notice appear in all copies and that both that
  19  * copyright notice and this permission notice appear in supporting
  20  * documentation, and that the name of M.I.T. not be used in advertising
  21  * or publicity pertaining to distribution of the software without specific,
  22  * written prior permission.  M.I.T. makes no representations about the
  23  * suitability of this software for any purpose.  It is provided "as is"
  24  * without express or implied warranty.
  25  *
  26  * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
  28  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  29  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  30  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  31  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  32  */
  33 #include <X11/cursorfont.h>
  34 #include <X11/Xlib.h>
  35 #include <X11/Xutil.h>
  36 #include <X11/Intrinsic.h>
  37
  38 /* for XmuCopyISOLatin1Lowered */
  39 #define XK_LATIN1
  40 #include <X11/keysymdef.h>
  41 #undef XK_LATIN1
  42
  43 #if (XtSpecificationRelease >= 5)
  44 /*
  45  * Don't know why, but this works with X11R5, not X11R4.
  46  * Anyway, _XExtension is defined in Xlib.h in X11R4, so we do not need
  47  * Xlibint in that case...
  48  */
  49 #include <X11/Xlibint.h>
  50 #endif
  51 #include <X11/Xproto.h>
  52 #include <stdio.h>
  53 #include <ctype.h>
  54
  55 int XmuCursorNameToIndex(const char *name)
  56 {
  57         static const struct _CursorName {
  58                 const char *name;
  59                 unsigned int shape;
  60         } cursor_names[] = {
  61                 {
  62                 "x_cursor", XC_X_cursor}, {
  63                 "arrow", XC_arrow}, {
  64                 "based_arrow_down", XC_based_arrow_down}, {
  65                 "based_arrow_up", XC_based_arrow_up}, {
  66                 "boat", XC_boat}, {
  67                 "bogosity", XC_bogosity}, {
  68                 "bottom_left_corner", XC_bottom_left_corner}, {
  69                 "bottom_right_corner", XC_bottom_right_corner}, {
  70                 "bottom_side", XC_bottom_side}, {
  71                 "bottom_tee", XC_bottom_tee}, {
  72                 "box_spiral", XC_box_spiral}, {
  73                 "center_ptr", XC_center_ptr}, {
  74                 "circle", XC_circle}, {
  75                 "clock", XC_clock}, {
  76                 "coffee_mug", XC_coffee_mug}, {
  77                 "cross", XC_cross}, {
  78                 "cross_reverse", XC_cross_reverse}, {
  79                 "crosshair", XC_crosshair}, {
  80                 "diamond_cross", XC_diamond_cross}, {
  81                 "dot", XC_dot}, {
  82                 "dotbox", XC_dotbox}, {
  83                 "double_arrow", XC_double_arrow}, {
  84                 "draft_large", XC_draft_large}, {
  85                 "draft_small", XC_draft_small}, {
  86                 "draped_box", XC_draped_box}, {
  87                 "exchange", XC_exchange}, {
  88                 "fleur", XC_fleur}, {
  89                 "gobbler", XC_gobbler}, {
  90                 "gumby", XC_gumby}, {
  91                 "hand1", XC_hand1}, {
  92                 "hand2", XC_hand2}, {
  93                 "heart", XC_heart}, {
  94                 "icon", XC_icon}, {
  95                 "iron_cross", XC_iron_cross}, {
  96                 "left_ptr", XC_left_ptr}, {
  97                 "left_side", XC_left_side}, {
  98                 "left_tee", XC_left_tee}, {
  99                 "leftbutton", XC_leftbutton}, {
 100                 "ll_angle", XC_ll_angle}, {
 101                 "lr_angle", XC_lr_angle}, {
 102                 "man", XC_man}, {
 103                 "middlebutton", XC_middlebutton}, {
 104                 "mouse", XC_mouse}, {
 105                 "pencil", XC_pencil}, {
 106                 "pirate", XC_pirate}, {
 107                 "plus", XC_plus}, {
 108                 "question_arrow", XC_question_arrow}, {
 109                 "right_ptr", XC_right_ptr}, {
 110                 "right_side", XC_right_side}, {
 111                 "right_tee", XC_right_tee}, {
 112                 "rightbutton", XC_rightbutton}, {
 113                 "rtl_logo", XC_rtl_logo}, {
 114                 "sailboat", XC_sailboat}, {
 115                 "sb_down_arrow", XC_sb_down_arrow}, {
 116                 "sb_h_double_arrow", XC_sb_h_double_arrow}, {
 117                 "sb_left_arrow", XC_sb_left_arrow}, {
 118                 "sb_right_arrow", XC_sb_right_arrow}, {
 119                 "sb_up_arrow", XC_sb_up_arrow}, {
 120                 "sb_v_double_arrow", XC_sb_v_double_arrow}, {
 121                 "shuttle", XC_shuttle}, {
 122                 "sizing", XC_sizing}, {
 123                 "spider", XC_spider}, {
 124                 "spraycan", XC_spraycan}, {
 125                 "star", XC_star}, {
 126                 "target", XC_target}, {
 127                 "tcross", XC_tcross}, {
 128                 "top_left_arrow", XC_top_left_arrow}, {
 129                 "top_left_corner", XC_top_left_corner}, {
 130                 "top_right_corner", XC_top_right_corner}, {
 131                 "top_side", XC_top_side}, {
 132                 "top_tee", XC_top_tee}, {
 133                 "trek", XC_trek}, {
 134                 "ul_angle", XC_ul_angle}, {
 135                 "umbrella", XC_umbrella}, {
 136                 "ur_angle", XC_ur_angle}, {
 137                 "watch", XC_watch}, {
 138         "xterm", XC_xterm},};
 139         const struct _CursorName *table;
 140         int i;
 141         char tmp[40];
 142
 143         if (strlen(name) >= sizeof tmp)
 144                 return -1;
 145         for (i = 0; i < strlen(name); i++)
 146                 if (isupper((unsigned char)name[i]))
 147                         tmp[i] = tolower((unsigned char)name[i]);
 148                 else
 149                         tmp[i] = name[i];
 150         tmp[i] = 0;
 151
 152         for (i = 0, table = cursor_names; i < XtNumber(cursor_names);
 153              i++, table++) {
 154                 if (strcmp(tmp, table->name) == 0)
 155                         return table->shape;
 156         }
 157
 158         return -1;
 159 }
 160
 161 /*
 162  * Based on an optimized version provided by Jim Becker, August 5, 1988.
 163  */
 164
 165 #define MAX_SIZE 255
 166
 167 /* shared data for the image read/parse logic */
 168 static short hexTable[256];     /* conversion value */
 169 static int hex_initialized;     /* easier to fill in at run time */
 170
 171 /*
 172  *      Table index for the hex values. Initialized once, first time.
 173  *      Used for translation value or delimiter significance lookup.
 174  */
 175 static void initHexTable(void)
 176 {
 177         /*
 178          * We build the table at run time for several reasons:
 179          *
 180          *     1.  portable to non-ASCII machines.
 181          *     2.  still reentrant since we set the init flag after setting table.
 182          *     3.  easier to extend.
 183          *     4.  less prone to bugs.
 184          */
 185         hexTable['0'] = 0;
 186         hexTable['1'] = 1;
 187         hexTable['2'] = 2;
 188         hexTable['3'] = 3;
 189         hexTable['4'] = 4;
 190         hexTable['5'] = 5;
 191         hexTable['6'] = 6;
 192         hexTable['7'] = 7;
 193         hexTable['8'] = 8;
 194         hexTable['9'] = 9;
 195         hexTable['A'] = 10;
 196         hexTable['B'] = 11;
 197         hexTable['C'] = 12;
 198         hexTable['D'] = 13;
 199         hexTable['E'] = 14;
 200         hexTable['F'] = 15;
 201         hexTable['a'] = 10;
 202         hexTable['b'] = 11;
 203         hexTable['c'] = 12;
 204         hexTable['d'] = 13;
 205         hexTable['e'] = 14;
 206         hexTable['f'] = 15;
 207
 208         /* delimiters of significance are flagged w/ negative value */
 209         hexTable[' '] = -1;
 210         hexTable[','] = -1;
 211         hexTable['}'] = -1;
 212         hexTable['\n'] = -1;
 213         hexTable['\t'] = -1;
 214
 215         hex_initialized = 1;
 216 }
 217
 218 /*
 219  *      read next hex value in the input stream, return -1 if EOF
 220  */
 221 static int NextInt(FILE * fstream)
 222 {
 223         int ch;
 224         int value = 0;
 225         int gotone = 0;
 226         int done = 0;
 227
 228         /* loop, accumulate hex value until find delimiter  */
 229         /* skip any initial delimiters found in read stream */
 230
 231         while (!done) {
 232                 ch = getc(fstream);
 233                 if (ch == EOF) {
 234                         value = -1;
 235                         done++;
 236                 } else {
 237                         /* trim high bits, check type and accumulate */
 238                         ch &= 0xff;
 239                         if (isascii(ch) && isxdigit(ch)) {
 240                                 value = (value << 4) + hexTable[ch];
 241                                 gotone++;
 242                         } else if ((hexTable[ch]) < 0 && gotone)
 243                                 done++;
 244                 }
 245         }
 246         return value;
 247 }
 248
 249 /*
 250  * The data returned by the following routine is always in left-most byte
 251  * first and left-most bit first.  If it doesn't return BitmapSuccess then
 252  * its arguments won't have been touched.  This routine should look as much
 253  * like the Xlib routine XReadBitmapfile as possible.
 254  */
 255 int XmuReadBitmapData(FILE * fstream,   /* handle on file  */
 256                       unsigned int *width,      /* RETURNED */
 257                       unsigned int *height,     /* RETURNED */
 258                       unsigned char **datap,    /* RETURNED */
 259                       int *x_hot, int *y_hot)
 260 {                               /* RETURNED */
 261         unsigned char *data = NULL;     /* working variable */
 262         char line[MAX_SIZE];    /* input line from file */
 263         int size;               /* number of bytes of data */
 264         char name_and_type[MAX_SIZE];   /* an input line */
 265         char *type;             /* for parsing */
 266         int value;              /* from an input line */
 267         int version10p;         /* boolean, old format */
 268         int padding;            /* to handle alignment */
 269         int bytes_per_line;     /* per scanline of data */
 270         unsigned int ww = 0;    /* width */
 271         unsigned int hh = 0;    /* height */
 272         int hx = -1;            /* x hotspot */
 273         int hy = -1;            /* y hotspot */
 274
 275 #ifndef Xmalloc
 276 #define Xmalloc(size) malloc(size)
 277 #endif
 278
 279         /* first time initialization */
 280         if (!hex_initialized)
 281                 initHexTable();
 282
 283         /* error cleanup and return macro   */
 284 #define RETURN(code) { if (data) free (data); return code; }
 285
 286         while (fgets(line, MAX_SIZE, fstream)) {
 287                 if (strlen(line) == MAX_SIZE - 1) {
 288                         RETURN(BitmapFileInvalid);
 289                 }
 290                 if (sscanf(line, "#define %s %d", name_and_type, &value) == 2) {
 291                         if (!(type = strrchr(name_and_type, '_')))
 292                                 type = name_and_type;
 293                         else
 294                                 type++;
 295
 296                         if (!strcmp("width", type))
 297                                 ww = (unsigned int)value;
 298                         if (!strcmp("height", type))
 299                                 hh = (unsigned int)value;
 300                         if (!strcmp("hot", type)) {
 301                                 if (type-- == name_and_type
 302                                     || type-- == name_and_type)
 303                                         continue;
 304                                 if (!strcmp("x_hot", type))
 305                                         hx = value;
 306                                 if (!strcmp("y_hot", type))
 307                                         hy = value;
 308                         }
 309                         continue;
 310                 }
 311
 312                 if (sscanf(line, "static short %s = {", name_and_type) == 1)
 313                         version10p = 1;
 314                 else if (sscanf
 315                          (line, "static unsigned char %s = {",
 316                           name_and_type) == 1)
 317                         version10p = 0;
 318                 else if (sscanf(line, "static char %s = {", name_and_type) == 1)
 319                         version10p = 0;
 320                 else
 321                         continue;
 322
 323                 if (!(type = strrchr(name_and_type, '_')))
 324                         type = name_and_type;
 325                 else
 326                         type++;
 327
 328                 if (strcmp("bits[]", type))
 329                         continue;
 330
 331                 if (!ww || !hh)
 332                         RETURN(BitmapFileInvalid);
 333
 334                 if ((ww % 16) && ((ww % 16) < 9) && version10p)
 335                         padding = 1;
 336                 else
 337                         padding = 0;
 338
 339                 bytes_per_line = (ww + 7) / 8 + padding;
 340
 341                 size = bytes_per_line * hh;
 342                 data = (unsigned char *)Xmalloc((unsigned int)size);
 343                 if (!data)
 344                         RETURN(BitmapNoMemory);
 345
 346                 if (version10p) {
 347                         unsigned char *ptr;
 348                         int bytes;
 349
 350                         for (bytes = 0, ptr = data; bytes < size; (bytes += 2)) {
 351                                 if ((value = NextInt(fstream)) < 0)
 352                                         RETURN(BitmapFileInvalid);
 353                                 *(ptr++) = value;
 354                                 if (!padding || ((bytes + 2) % bytes_per_line))
 355                                         *(ptr++) = value >> 8;
 356                         }
 357                 } else {
 358                         unsigned char *ptr;
 359                         int bytes;
 360
 361                         for (bytes = 0, ptr = data; bytes < size;
 362                              bytes++, ptr++) {
 363                                 if ((value = NextInt(fstream)) < 0)
 364                                         RETURN(BitmapFileInvalid);
 365                                 *ptr = value;
 366                         }
 367                 }
 368                 break;
 369         }                       /* end while */
 370
 371         if (data == NULL) {
 372                 RETURN(BitmapFileInvalid);
 373         }
 374
 375         *datap = data;
 376         data = NULL;
 377         *width = ww;
 378         *height = hh;
 379         if (x_hot)
 380                 *x_hot = hx;
 381         if (y_hot)
 382                 *y_hot = hy;
 383
 384         RETURN(BitmapSuccess);
 385 }
 386
 387 int XmuReadBitmapDataFromFile(const char *filename,
 388                               /* Remaining args are RETURNED */
 389                               unsigned int *width,
 390                               unsigned int *height,
 391                               unsigned char **datap, int *x_hot, int *y_hot)
 392 {
 393         FILE *fstream;
 394         int status;
 395
 396         if ((fstream = fopen(filename, "r")) == NULL) {
 397                 return BitmapOpenFailed;
 398         }
 399         status = XmuReadBitmapData(fstream, width, height, datap, x_hot, y_hot);
 400         fclose(fstream);
 401         return status;
 402 }
 403
 404 /*
 405  * XmuPrintDefaultErrorMessage - print a nice error that looks like the usual
 406  * message.  Return 1 if the caller should consider exiting, else 0.
 407  */
 408 int XmuPrintDefaultErrorMessage(Display * dpy, XErrorEvent * event, FILE * fp)
 409 {
 410         char buffer[BUFSIZ];
 411         char mesg[BUFSIZ];
 412         char number[32];
 413         char *mtype = "XlibMessage";
 414         _XExtension *ext = (_XExtension *) NULL;
 415         XGetErrorText(dpy, event->error_code, buffer, BUFSIZ);
 416         XGetErrorDatabaseText(dpy, mtype, "XError", "X Error", mesg, BUFSIZ);
 417         fprintf(fp, "%s:  %s\n  ", mesg, buffer);
 418         XGetErrorDatabaseText(dpy, mtype, "MajorCode", "Request Major code %d",
 419                               mesg, BUFSIZ);
 420         fprintf(fp, mesg, event->request_code);
 421         if (event->request_code < 128) {
 422                 int sz = snprintf(number, sizeof(number), "%d", event->request_code);
 423                 assert(sz >= 0 && sz < sizeof(number));
 424                 XGetErrorDatabaseText(dpy, "XRequest", number, "", buffer,
 425                                       BUFSIZ);
 426         } else {
 427                 /* XXX this is non-portable */
 428                 for (ext = dpy->ext_procs;
 429                      ext && (ext->codes.major_opcode != event->request_code);
 430                      ext = ext->next) ;
 431                 if (ext) {
 432                         strncpy(buffer, ext->name, sizeof(buffer));
 433                         buffer[sizeof(buffer)-1] = '\0';
 434                 } else
 435                         buffer[0] = '\0';
 436         }
 437         fprintf(fp, " (%s)", buffer);
 438         fputs("\n  ", fp);
 439 #if (XtSpecificationRelease >= 5)
 440         if (event->request_code >= 128) {
 441                 XGetErrorDatabaseText(dpy, mtype, "MinorCode",
 442                                       "Request Minor code %d", mesg, BUFSIZ);
 443                 fprintf(fp, mesg, event->minor_code);
 444                 if (ext) {
 445                         in sz = snprintf(mesg, sizeof(mesg), "%s.%d", ext->name,
 446                                          event->minor_code);
 447                         assert(sz >= 0 && sz < sizeof(mesg));
 448                         XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer,
 449                                               BUFSIZ);
 450                         fprintf(fp, " (%s)", buffer);
 451                 }
 452                 fputs("\n  ", fp);
 453         }
 454         if (event->error_code >= 128) {
 455                 /* let extensions try to print the values */
 456                 /* XXX this is non-portable code */
 457                 for (ext = dpy->ext_procs; ext; ext = ext->next) {
 458                         if (ext->error_values)
 459                                 (*ext->error_values) (dpy, event, fp);
 460                 }
 461                 /* the rest is a fallback, providing a simple default */
 462                 /* kludge, try to find the extension that caused it */
 463                 buffer[0] = '\0';
 464                 for (ext = dpy->ext_procs; ext; ext = ext->next) {
 465                         if (ext->error_string)
 466                                 (*ext->error_string) (dpy, event->error_code,
 467                                                       &ext->codes, buffer,
 468                                                       BUFSIZ);
 469                         if (buffer[0])
 470                                 break;
 471                 }
 472                 if (buffer[0]) {
 473                         int sz = snprintf(buffer, sizeof(buffer), "%s.%d",
 474                                           ext->name,
 475                                           event->error_code - ext->codes.first_error);
 476                         assert(sz >= 0 && sz < sizeof(buffer));
 477                 } else
 478                         strncpy(buffer, "Value", sizeof(buffer));
 479                 XGetErrorDatabaseText(dpy, mtype, buffer, "", mesg, BUFSIZ);
 480                 if (*mesg) {
 481                         fprintf(fp, mesg, event->resourceid);
 482                         fputs("\n  ", fp);
 483                 }
 484         } else if ((event->error_code == BadWindow) ||
 485                    (event->error_code == BadPixmap) ||
 486                    (event->error_code == BadCursor) ||
 487                    (event->error_code == BadFont) ||
 488                    (event->error_code == BadDrawable) ||
 489                    (event->error_code == BadColor) ||
 490                    (event->error_code == BadGC) ||
 491                    (event->error_code == BadIDChoice) ||
 492                    (event->error_code == BadValue) ||
 493                    (event->error_code == BadAtom)) {
 494                 if (event->error_code == BadValue)
 495                         XGetErrorDatabaseText(dpy, mtype, "Value", "Value 0x%x",
 496                                               mesg, BUFSIZ);
 497                 else if (event->error_code == BadAtom)
 498                         XGetErrorDatabaseText(dpy, mtype, "AtomID",
 499                                               "AtomID 0x%x", mesg, BUFSIZ);
 500                 else
 501                         XGetErrorDatabaseText(dpy, mtype, "ResourceID",
 502                                               "ResourceID 0x%x", mesg, BUFSIZ);
 503                 fprintf(fp, mesg, event->resourceid);
 504                 fputs("\n  ", fp);
 505         }
 506 #elif (XtSpecificationRelease == 4)
 507         XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d",
 508                               mesg, BUFSIZ);
 509         fprintf(fp, mesg, event->minor_code);
 510         fputs("\n  ", fp);
 511         if (ext) {
 512                 int sz = snprintf(mesg, sizeof(mesg), "%s.%d", ext->name, event->minor_code);
 513                 assert(sz >= 0 && sz < sizeof(mesg));
 514                 XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer,
 515                                       BUFSIZ);
 516                 fprintf(fp, " (%s)", buffer);
 517         }
 518         XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x",
 519                               mesg, BUFSIZ);
 520         fprintf(fp, mesg, event->resourceid);
 521         fputs("\n  ", fp);
 522 #else
 523         ERROR ! Unsupported release of X11
 524 #endif
 525             XGetErrorDatabaseText(dpy, mtype, "ErrorSerial", "Error Serial #%d",
 526                                   mesg, BUFSIZ);
 527         fprintf(fp, mesg, event->serial);
 528         fputs("\n  ", fp);
 529         XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d",
 530                               mesg, BUFSIZ);
 531         fprintf(fp, mesg, NextRequest(dpy) - 1);
 532         fputs("\n", fp);
 533         if (event->error_code == BadImplementation)
 534                 return 0;
 535         return 1;
 536 }
 537
 538 /*
 539  * XmuSimpleErrorHandler - ignore errors for XQueryTree, XGetWindowAttributes,
 540  * and XGetGeometry; print a message for everything else.  In all case, do
 541  * not exit.
 542  */
 543 int XmuSimpleErrorHandler(Display * dpy, XErrorEvent * errorp)
 544 {
 545         switch (errorp->request_code) {
 546         case X_QueryTree:
 547         case X_GetWindowAttributes:
 548                 if (errorp->error_code == BadWindow)
 549                         return 0;
 550                 break;
 551         case X_GetGeometry:
 552                 if (errorp->error_code == BadDrawable)
 553                         return 0;
 554                 break;
 555         }
 556         /* got a "real" X error */
 557         return XmuPrintDefaultErrorMessage(dpy, errorp, stderr);
 558 }
 559
 560 void XmuCopyISOLatin1Lowered(char *dst, const char *src)
 561 {
 562         unsigned char *dest = (unsigned char *)dst;
 563         unsigned char *source = (unsigned char *)src;
 564
 565         for (; *source; source++, dest++) {
 566                 if ((*source >= XK_A) && (*source <= XK_Z))
 567                         *dest = *source + (XK_a - XK_A);
 568                 else if ((*source >= XK_Agrave) && (*source <= XK_Odiaeresis))
 569                         *dest = *source + (XK_agrave - XK_Agrave);
 570                 else if ((*source >= XK_Ooblique) && (*source <= XK_Thorn))
 571                         *dest = *source + (XK_oslash - XK_Ooblique);
 572                 else
 573                         *dest = *source;
 574         }
 575         *dest = '\0';
 576 }
 577 #endif                          /* !HAVE_XMU */