src/gui_xmdlg.c

   1 /* vi:set ts=8 sts=4 sw=4:
   2  *
   3  * VIM - Vi IMproved            by Bram Moolenaar
   4  *
   5  * Do ":help uganda"  in Vim to read copying and usage conditions.
   6  * Do ":help credits" in Vim to see a list of people who contributed.
   7  * See README.txt for an overview of the Vim source code.
   8  */
   9
  10 /*
  11  * (C) 2001,2005 by Marcin Dalecki <martin@dalecki.de>
  12  *
  13  * Implementation of dialogue functions for the Motif GUI variant.
  14  *
  15  * Note about Lesstif: Apparently lesstif doesn't get the widget layout right,
  16  * when using a dynamic scrollbar policy.
  17  */
  18
  19 #include <Xm/Form.h>
  20 #include <Xm/PushBG.h>
  21 #include <Xm/Text.h>
  22 #include <Xm/TextF.h>
  23 #include <Xm/Label.h>
  24 #include <Xm/Frame.h>
  25 #include <Xm/LabelG.h>
  26 #include <Xm/ToggleBG.h>
  27 #include <Xm/SeparatoG.h>
  28 #include <Xm/DialogS.h>
  29 #include <Xm/List.h>
  30 #include <Xm/RowColumn.h>
  31 #include <Xm/AtomMgr.h>
  32 #include <Xm/Protocols.h>
  33
  34 #include <X11/keysym.h>
  35 #include <X11/Xatom.h>
  36 #include <X11/StringDefs.h>
  37 #include <X11/Intrinsic.h>
  38
  39 #include "vim.h"
  40
  41 extern Widget vimShell;
  42
  43 #ifdef FEAT_MENU
  44 # define apply_fontlist(w) gui_motif_menu_fontlist(w)
  45 #else
  46 # define apply_fontlist(w)
  47 #endif
  48
  49 /****************************************************************************
  50  * Font selection dialogue implementation.
  51  */
  52
  53 static char wild[3] = "*";
  54
  55 /*
  56  * FIXME: This is a generic function, which should be used throughout the whole
  57  * application.
  58  *
  59  * Add close_callback, which will be called when the user selects close from
  60  * the window menu.  The close menu item usually activates f.kill which sends a
  61  * WM_DELETE_WINDOW protocol request for the window.
  62  */
  63
  64     static void
  65 add_cancel_action(Widget shell, XtCallbackProc close_callback, void *arg)
  66 {
  67     static Atom wmp_atom = 0;
  68     static Atom dw_atom = 0;
  69     Display *display = XtDisplay(shell);
  70
  71     /* deactivate the built-in delete response of killing the application */
  72     XtVaSetValues(shell, XmNdeleteResponse, XmDO_NOTHING, 0);
  73
  74     /* add a delete window protocol callback instead */
  75     if (!dw_atom)
  76     {
  77         wmp_atom = XmInternAtom(display, "WM_PROTOCOLS", True);
  78         dw_atom = XmInternAtom(display, "WM_DELETE_WINDOW", True);
  79     }
  80     XmAddProtocolCallback(shell, wmp_atom, dw_atom, close_callback, arg);
  81 }
  82
  83 #define MAX_FONTS                       65535
  84 #define MAX_FONT_NAME_LEN               256
  85 #define MAX_ENTRIES_IN_LIST             5000
  86 #define MAX_DISPLAY_SIZE                150
  87 #define TEMP_BUF_SIZE                   256
  88
  89 enum ListSpecifier
  90 {
  91     ENCODING,
  92     NAME,
  93     STYLE,
  94     SIZE,
  95     NONE
  96 };
  97
  98 typedef struct _SharedFontSelData
  99 {
 100     Widget      dialog;
 101     Widget      ok;
 102     Widget      cancel;
 103     Widget      encoding_pulldown;
 104     Widget      encoding_menu;
 105     Widget      list[NONE];
 106     Widget      name;
 107     Widget      sample;
 108     char        **names;        /* font name array of arrays */
 109     int         num;            /* number of font names */
 110     String      sel[NONE];      /* selection category */
 111     Boolean     in_pixels;      /* toggle state - size in pixels  */
 112     char        *font_name;     /* current font name */
 113     XFontStruct *old;           /* font data structure for sample display */
 114     XmFontList  old_list;       /* font data structure for sample display */
 115     Boolean     exit;           /* used for program exit control */
 116 } SharedFontSelData;
 117
 118 /*
 119  * Checking access to the font name array for validity.
 120  */
 121     static char *
 122 fn(SharedFontSelData *data, int i)
 123 {
 124     /* Assertion checks: */
 125     if (data->num < 0)
 126         abort();
 127     if (i >= data->num)
 128         i = data->num - 1;
 129     if (i < 0)
 130         i = 0;
 131
 132     return data->names[i];
 133 }
 134
 135 /*
 136  * Get a specific substring from a font name.
 137  */
 138     static void
 139 get_part(char *in, int pos, char *out)
 140 {
 141     int i;
 142     int j;
 143
 144     *out = '\0';
 145
 146     for (i = 0; (pos > 0) && (in[i] != '\0'); ++i)
 147         if (in[i] == '-')
 148             pos--;
 149
 150     if (in[i] == '\0')
 151         return;
 152
 153     for (j = 0; (in[i] != '-') && (in[i] != '\0'); ++i, ++j)
 154         out[j] = in[i];
 155     out[j] = '\0';
 156 }
 157
 158 /*
 159  * Given a font name this function returns the part used in the first
 160  * scroll list.
 161  */
 162     static void
 163 name_part(char *font, char *buf)
 164 {
 165     char    buf2[TEMP_BUF_SIZE];
 166     char    buf3[TEMP_BUF_SIZE];
 167
 168     get_part(font, 2, buf2);
 169     get_part(font, 1, buf3);
 170
 171     if (strlen(buf3))
 172         vim_snprintf(buf, TEMP_BUF_SIZE, "%s (%s)", buf2, buf3);
 173     else
 174         vim_snprintf(buf, TEMP_BUF_SIZE, "%s", buf2);
 175 }
 176
 177 /*
 178  * Given a font name this function returns the part used in the second scroll list.
 179  */
 180     static void
 181 style_part(char *font, char *buf)
 182 {
 183     char    buf2[TEMP_BUF_SIZE];
 184     char    buf3[TEMP_BUF_SIZE];
 185
 186     get_part(font, 3, buf3);
 187     get_part(font, 5, buf2);
 188
 189     if (!strcmp(buf2, "normal") && !strcmp(buf2, "Normal")
 190                                                    && !strcmp(buf2, "NORMAL"))
 191         vim_snprintf(buf, TEMP_BUF_SIZE, "%s %s", buf3, buf2);
 192     else
 193         strcpy(buf, buf3);
 194
 195     get_part(font, 6, buf2);
 196
 197     if (buf2[0] != '\0')
 198         vim_snprintf(buf3, TEMP_BUF_SIZE, "%s %s", buf, buf2);
 199     else
 200         strcpy(buf3, buf);
 201
 202     get_part(font, 4, buf2);
 203
 204     if (!strcmp(buf2, "o") || !strcmp(buf2, "O"))
 205         vim_snprintf(buf, TEMP_BUF_SIZE, "%s oblique", buf3);
 206     else if (!strcmp(buf2, "i") || !strcmp(buf2, "I"))
 207         vim_snprintf(buf, TEMP_BUF_SIZE, "%s italic", buf3);
 208
 209     if (!strcmp(buf, " "))
 210         strcpy(buf, "-");
 211 }
 212
 213 /*
 214  * Given a font name this function returns the part used in the third
 215  * scroll list.
 216  */
 217     static void
 218 size_part(char *font, char *buf, int inPixels)
 219 {
 220     int     size;
 221     float   temp;
 222
 223     *buf = '\0';
 224
 225     if (inPixels)
 226     {
 227         get_part(font, 7, buf);
 228         if (strlen(buf) > 0)
 229         {
 230             size = atoi(buf);
 231             sprintf(buf, "%3d", size);
 232         }
 233     }
 234     else
 235     {
 236         get_part(font, 8, buf);
 237         if (strlen(buf) > 0)
 238         {
 239             size = atoi(buf);
 240             temp = (float)size / 10.0;
 241             size = temp;
 242             if (buf[strlen(buf) - 1] == '0')
 243                 sprintf(buf, "%3d", size);
 244             else
 245                 sprintf(buf, "%4.1f", temp);
 246         }
 247     }
 248 }
 249
 250 /*
 251  * Given a font name this function returns the part used in the choice menu.
 252  */
 253     static void
 254 encoding_part(char *font, char *buf)
 255 {
 256     char    buf1[TEMP_BUF_SIZE];
 257     char    buf2[TEMP_BUF_SIZE];
 258
 259     *buf = '\0';
 260
 261     get_part(font, 13, buf1);
 262     get_part(font, 14, buf2);
 263
 264     if (strlen(buf1) > 0 && strlen(buf2))
 265         vim_snprintf(buf, TEMP_BUF_SIZE, "%s-%s", buf1, buf2);
 266     if (!strcmp(buf, " "))
 267         strcpy(buf, "-");
 268 }
 269
 270 /*
 271  * Inserts a string into correct sorted position in a list.
 272  */
 273     static void
 274 add_to_list(char **buf, char *item, int *count)
 275 {
 276     int i;
 277     int j;
 278
 279     if (*count == MAX_ENTRIES_IN_LIST)
 280         return;
 281
 282     /* avoid duplication */
 283     for (i = 0; i < *count; ++i)
 284     {
 285         if (!strcmp(buf[i], item))
 286             return;
 287     }
 288
 289     /* find order place, but make sure that wild card comes first */
 290     if (!strcmp(item, wild))
 291         i = 0;
 292     else
 293         for (i = 0; i < *count; ++i)
 294             if (strcmp(buf[i], item) > 0 && strcmp(buf[i], wild))
 295                 break;
 296
 297     /* now insert the item */
 298     for (j = *count; j > i; --j)
 299         buf[j] = buf[j-1];
 300     buf[i] = XtNewString(item);
 301
 302     ++(*count);
 303 }
 304
 305 /*
 306  * True if the font matches some field.
 307  */
 308     static Boolean
 309 match(SharedFontSelData *data, enum ListSpecifier l, int i)
 310 {
 311     char buf[TEMP_BUF_SIZE];
 312
 313     /* An empty selection or a wild card matches anything.
 314      */
 315     if (!data->sel[l] || !strcmp(data->sel[l], wild))
 316         return True;
 317
 318     /* chunk out the desired part... */
 319     switch (l)
 320     {
 321         case ENCODING:
 322             encoding_part(fn(data, i), buf);
 323             break;
 324
 325         case NAME:
 326             name_part(fn(data, i), buf);
 327             break;
 328
 329         case STYLE:
 330             style_part(fn(data, i), buf);
 331             break;
 332
 333         case SIZE:
 334             size_part(fn(data, i), buf, data->in_pixels);
 335             break;
 336         default:
 337             ;
 338     }
 339
 340     /* ...and chew it now */
 341
 342     return !strcmp(buf, data->sel[l]);
 343 }
 344
 345     static Boolean
 346 proportional(char *font)
 347 {
 348     char buf[TEMP_BUF_SIZE];
 349
 350     get_part(font, 11, buf);
 351
 352     return !strcmp(buf, "p") || !strcmp(buf, "P");
 353 }
 354
 355
 356 static void encoding_callback(Widget w, SharedFontSelData *data,
 357                                                              XtPointer dummy);
 358
 359 /*
 360  * Parse through the fontlist data and set up the three scroll lists.  The fix
 361  * parameter can be used to exclude a list from any changes.  This is used for
 362  * updates after selections caused by the users actions.
 363  */
 364     static void
 365 fill_lists(enum ListSpecifier fix, SharedFontSelData *data)
 366 {
 367     char        *list[NONE][MAX_ENTRIES_IN_LIST];
 368     int         count[NONE];
 369     char        buf[TEMP_BUF_SIZE];
 370     XmString    items[MAX_ENTRIES_IN_LIST];
 371     int         i;
 372     int         index;
 373
 374     for (index = (int)ENCODING; index < (int)NONE; ++index)
 375         count[index] = 0;
 376
 377     /* First we insert the wild char into every single list. */
 378     if (fix != ENCODING)
 379         add_to_list(list[ENCODING], wild, &count[ENCODING]);
 380     if (fix != NAME)
 381         add_to_list(list[NAME], wild, &count[NAME]);
 382     if (fix != STYLE)
 383         add_to_list(list[STYLE], wild, &count[STYLE]);
 384     if (fix != SIZE)
 385         add_to_list(list[SIZE], wild, &count[SIZE]);
 386
 387     for (i = 0; i < data->num && i < MAX_ENTRIES_IN_LIST; i++)
 388     {
 389         if (proportional(fn(data, i)))
 390             continue;
 391
 392         if (fix != ENCODING
 393                 && match(data, NAME, i)
 394                 && match(data, STYLE, i)
 395                 && match(data, SIZE, i))
 396         {
 397             encoding_part(fn(data, i), buf);
 398             add_to_list(list[ENCODING], buf, &count[ENCODING]);
 399         }
 400
 401         if (fix != NAME
 402                 && match(data, ENCODING, i)
 403                 && match(data, STYLE, i)
 404                 && match(data, SIZE, i))
 405         {
 406             name_part(fn(data, i), buf);
 407             add_to_list(list[NAME], buf, &count[NAME]);
 408         }
 409
 410         if (fix != STYLE
 411                 && match(data, ENCODING, i)
 412                 && match(data, NAME, i)
 413                 && match(data, SIZE, i))
 414         {
 415             style_part(fn(data, i), buf);
 416             add_to_list(list[STYLE], buf, &count[STYLE]);
 417         }
 418
 419         if (fix != SIZE
 420                 && match(data, ENCODING, i)
 421                 && match(data, NAME, i)
 422                 && match(data, STYLE, i))
 423         {
 424             size_part(fn(data, i), buf, data->in_pixels);
 425             add_to_list(list[SIZE], buf, &count[SIZE]);
 426         }
 427     }
 428
 429     /*
 430      * And now do the preselection in all lists where there was one:
 431      */
 432
 433     if (fix != ENCODING)
 434     {
 435         Cardinal n_items;
 436         WidgetList children;
 437         Widget selected_button = 0;
 438
 439         /* Get and update the current button list.  */
 440         XtVaGetValues(data->encoding_pulldown,
 441                 XmNchildren, &children,
 442                 XmNnumChildren, &n_items,
 443                 NULL);
 444
 445         for (i = 0; i < count[ENCODING]; ++i)
 446         {
 447             Widget button;
 448
 449             items[i] = XmStringCreateLocalized(list[ENCODING][i]);
 450
 451             if (i < n_items)
 452             {
 453                 /* recycle old button */
 454                 XtVaSetValues(children[i],
 455                         XmNlabelString, items[i],
 456                         XmNuserData, i,
 457                         NULL);
 458                 button = children[i];
 459             }
 460             else
 461             {
 462                 /* create a new button */
 463                 button = XtVaCreateManagedWidget("button",
 464                         xmPushButtonGadgetClass,
 465                         data->encoding_pulldown,
 466                         XmNlabelString, items[i],
 467                         XmNuserData, i,
 468                         NULL);
 469                 XtAddCallback(button, XmNactivateCallback,
 470                         (XtCallbackProc) encoding_callback, (XtPointer) data);
 471                 XtManageChild(button);
 472             }
 473
 474             if (data->sel[ENCODING])
 475             {
 476                 if (!strcmp(data->sel[ENCODING], list[ENCODING][i]))
 477                     selected_button = button;
 478             }
 479             XtFree(list[ENCODING][i]);
 480         }
 481
 482         /* Destroy all the outstanding menu items.
 483          */
 484         for (i = count[ENCODING]; i < n_items; ++i)
 485         {
 486             XtUnmanageChild(children[i]);
 487             XtDestroyWidget(children[i]);
 488         }
 489
 490         /* Preserve the current selection visually.
 491          */
 492         if (selected_button)
 493         {
 494             XtVaSetValues(data->encoding_menu,
 495                     XmNmenuHistory, selected_button,
 496                     NULL);
 497         }
 498
 499         for (i = 0; i < count[ENCODING]; ++i)
 500             XmStringFree(items[i]);
 501     }
 502
 503     /*
 504      * Now loop trough the remaining lists and set them up.
 505      */
 506     for (index = (int)NAME; index < (int)NONE; ++index)
 507     {
 508         Widget w;
 509
 510         if (fix == (enum ListSpecifier)index)
 511             continue;
 512
 513         switch ((enum ListSpecifier)index)
 514         {
 515             case NAME:
 516                 w = data->list[NAME];
 517                 break;
 518             case STYLE:
 519                 w = data->list[STYLE];
 520                 break;
 521             case SIZE:
 522                 w = data->list[SIZE];
 523                 break;
 524             default:
 525                 w = (Widget)0;  /* for lint */
 526         }
 527
 528         for (i = 0; i < count[index]; ++i)
 529         {
 530             items[i] = XmStringCreateLocalized(list[index][i]);
 531             XtFree(list[index][i]);
 532         }
 533         XmListDeleteAllItems(w);
 534         XmListAddItems(w, items, count[index], 1);
 535         if (data->sel[index])
 536         {
 537             XmStringFree(items[0]);
 538             items[0] = XmStringCreateLocalized(data->sel[index]);
 539             XmListSelectItem(w, items[0], False);
 540             XmListSetBottomItem(w, items[0]);
 541         }
 542         for (i = 0; i < count[index]; ++i)
 543             XmStringFree(items[i]);
 544     }
 545 }
 546
 547 /*ARGSUSED*/
 548     static void
 549 stoggle_callback(Widget w,
 550         SharedFontSelData *data,
 551         XmToggleButtonCallbackStruct *call_data)
 552 {
 553     int         i, do_sel;
 554     char        newSize[TEMP_BUF_SIZE];
 555     XmString    str;
 556
 557     if (call_data->reason != (int)XmCR_VALUE_CHANGED)
 558         return;
 559
 560     do_sel = (data->sel[SIZE] != NULL) && strcmp(data->sel[SIZE], wild);
 561
 562     for (i = 0; do_sel && (i < data->num); i++)
 563         if (match(data, ENCODING, i)
 564                 && match(data, NAME, i)
 565                 && match(data, STYLE, i)
 566                 && match(data, SIZE, i))
 567         {
 568             size_part(fn(data, i), newSize, !data->in_pixels);
 569             break;
 570         }
 571
 572     data->in_pixels = !data->in_pixels;
 573
 574     if (data->sel[SIZE])
 575         XtFree(data->sel[SIZE]);
 576     data->sel[SIZE] = NULL;
 577     fill_lists(NONE, data);
 578
 579     if (do_sel)
 580     {
 581         str = XmStringCreateLocalized(newSize);
 582         XmListSelectItem(data->list[SIZE], str, True);
 583         XmListSetBottomItem(data->list[SIZE], str);
 584         XmStringFree(str);
 585     }
 586 }
 587
 588 /*
 589  * Show the currently selected font in the sample text label.
 590  */
 591     static void
 592 display_sample(SharedFontSelData *data)
 593 {
 594     Arg             args[2];
 595     int             n;
 596     XFontStruct *   font;
 597     XmFontList      font_list;
 598     Display *       display;
 599     XmString        str;
 600
 601     display = XtDisplay(data->dialog);
 602     font = XLoadQueryFont(display, data->font_name);
 603     font_list = gui_motif_create_fontlist(font);
 604
 605     n = 0;
 606     str = XmStringCreateLocalized("AaBbZzYy 0123456789");
 607     XtSetArg(args[n], XmNlabelString, str); n++;
 608     XtSetArg(args[n], XmNfontList, font_list); n++;
 609
 610     XtSetValues(data->sample, args, n);
 611     XmStringFree(str);
 612
 613     if (data->old)
 614     {
 615         XFreeFont(display, data->old);
 616         XmFontListFree(data->old_list);
 617     }
 618     data->old = font;
 619     data->old_list = font_list;
 620 }
 621
 622
 623     static Boolean
 624 do_choice(Widget w,
 625         SharedFontSelData *data,
 626         XmListCallbackStruct *call_data,
 627         enum ListSpecifier which)
 628 {
 629     char *sel;
 630
 631     XmStringGetLtoR(call_data->item, XmSTRING_DEFAULT_CHARSET, &sel);
 632
 633     if (!data->sel[which])
 634         data->sel[which] = XtNewString(sel);
 635     else
 636     {
 637         XtFree(data->sel[which]);
 638         if (!strcmp(data->sel[which], sel))
 639         {
 640             /* unselecting current selection */
 641             data->sel[which] = NULL;
 642             if (w)
 643                 XmListDeselectItem(w, call_data->item);
 644         }
 645         else
 646             data->sel[which] = XtNewString(sel);
 647     }
 648     XtFree(sel);
 649
 650     fill_lists(which, data);
 651
 652     /* If there is a font selection, we display it. */
 653     if (data->sel[ENCODING]
 654             && data->sel[NAME]
 655             && data->sel[STYLE]
 656             && data->sel[SIZE]
 657             && strcmp(data->sel[ENCODING], wild)
 658             && strcmp(data->sel[NAME], wild)
 659             && strcmp(data->sel[STYLE], wild)
 660             && strcmp(data->sel[SIZE], wild))
 661     {
 662         int i;
 663
 664         if (data->font_name)
 665             XtFree(data->font_name);
 666         data->font_name = NULL;
 667
 668         for (i = 0; i < data->num; i++)
 669         {
 670             if (match(data, ENCODING, i)
 671                     && match(data, NAME, i)
 672                     && match(data, STYLE, i)
 673                     && match(data, SIZE, i))
 674             {
 675                 data->font_name = XtNewString(fn(data, i));
 676                 break;
 677             }
 678         }
 679
 680         if (data->font_name)
 681         {
 682             XmTextSetString(data->name, data->font_name);
 683             display_sample(data);
 684         }
 685         else
 686             do_dialog(VIM_ERROR,
 687                     (char_u *)_("Error"),
 688                     (char_u *)_("Invalid font specification"),
 689                     (char_u *)_("&Dismiss"), 1, NULL);
 690
 691         return True;
 692     }
 693     else
 694     {
 695         int         n;
 696         XmString    str;
 697         Arg         args[4];
 698         char        *msg = _("no specific match");
 699
 700         n = 0;
 701         str = XmStringCreateLocalized(msg);
 702         XtSetArg(args[n], XmNlabelString, str); ++n;
 703         XtSetValues(data->sample, args, n);
 704         apply_fontlist(data->sample);
 705         XmTextSetString(data->name, msg);
 706         XmStringFree(str);
 707
 708         return False;
 709     }
 710 }
 711
 712 /*ARGSUSED*/
 713     static void
 714 encoding_callback(Widget w,
 715         SharedFontSelData *data,
 716         XtPointer dummy)
 717 {
 718     XmString str;
 719     XmListCallbackStruct fake_data;
 720
 721     XtVaGetValues(w, XmNlabelString, &str, NULL);
 722
 723     if (!str)
 724         return;
 725
 726     fake_data.item = str;
 727
 728     do_choice(0, data, &fake_data, ENCODING);
 729 }
 730
 731     static void
 732 name_callback(Widget w,
 733         SharedFontSelData *data,
 734         XmListCallbackStruct *call_data)
 735 {
 736     do_choice(w, data, call_data, NAME);
 737 }
 738
 739     static void
 740 style_callback(Widget w,
 741         SharedFontSelData *data,
 742         XmListCallbackStruct *call_data)
 743 {
 744     do_choice(w, data, call_data, STYLE);
 745 }
 746
 747     static void
 748 size_callback(Widget w,
 749         SharedFontSelData *data,
 750         XmListCallbackStruct *call_data)
 751 {
 752     do_choice(w, data, call_data, SIZE);
 753 }
 754
 755 /*ARGSUSED*/
 756     static void
 757 cancel_callback(Widget w,
 758         SharedFontSelData *data,
 759         XmListCallbackStruct *call_data)
 760 {
 761     if (data->sel[ENCODING])
 762     {
 763         XtFree(data->sel[ENCODING]);
 764         data->sel[ENCODING] = NULL;
 765     }
 766     if (data->sel[NAME])
 767     {
 768         XtFree(data->sel[NAME]);
 769         data->sel[NAME] = NULL;
 770     }
 771     if (data->sel[STYLE])
 772     {
 773         XtFree(data->sel[STYLE]);
 774         data->sel[STYLE] = NULL;
 775     }
 776     if (data->sel[SIZE])
 777     {
 778         XtFree(data->sel[SIZE]);
 779         data->sel[SIZE] = NULL;
 780     }
 781
 782     if (data->font_name)
 783         XtFree(data->font_name);
 784     data->font_name = NULL;
 785
 786     data->num = 0;
 787     XFreeFontNames(data->names);
 788     data->names = NULL;
 789     data->exit = True;
 790 }
 791
 792 /*ARGSUSED*/
 793     static void
 794 ok_callback(Widget w,
 795         SharedFontSelData *data,
 796         XmPushButtonCallbackStruct *call_data)
 797 {
 798     char    *pattern;
 799     char    **name;
 800     int     i;
 801
 802     pattern = XmTextGetString(data->name);
 803     name    = XListFonts(XtDisplay(data->dialog), pattern, 1, &i);
 804     XtFree(pattern);
 805
 806     if (i != 1)
 807     {
 808         do_dialog(VIM_ERROR,
 809                 (char_u *)_("Error"),
 810                 (char_u *)_("Invalid font specification"),
 811                 (char_u *)_("&Dismiss"), 1, NULL);
 812         XFreeFontNames(name);
 813     }
 814     else
 815     {
 816         if (data->font_name)
 817             XtFree(data->font_name);
 818         data->font_name = XtNewString(name[0]);
 819
 820         if (data->sel[ENCODING])
 821         {
 822             XtFree(data->sel[ENCODING]);
 823             data->sel[ENCODING] = NULL;
 824         }
 825         if (data->sel[NAME])
 826         {
 827             XtFree(data->sel[NAME]);
 828             data->sel[NAME] = NULL;
 829         }
 830         if (data->sel[STYLE])
 831         {
 832             XtFree(data->sel[STYLE]);
 833             data->sel[STYLE] = NULL;
 834         }
 835         if (data->sel[SIZE])
 836         {
 837             XtFree(data->sel[SIZE]);
 838             data->sel[SIZE] = NULL;
 839         }
 840
 841         XFreeFontNames(name);
 842
 843         data->num = 0;
 844         XFreeFontNames(data->names);
 845         data->names = NULL;
 846         data->exit = True;
 847     }
 848 }
 849
 850 /*
 851  * Returns pointer to an ASCII character string that contains the name of the
 852  * selected font (in X format for naming fonts); it is the users responsibility
 853  * to free the space allocated to this string.
 854  */
 855     char_u *
 856 gui_xm_select_font(char_u *current)
 857 {
 858     static SharedFontSelData    _data;
 859
 860     Widget              parent;
 861     Widget              form;
 862     Widget              separator;
 863     Widget              sub_form;
 864     Widget              size_toggle;
 865     Widget              name;
 866     Widget              disp_frame;
 867     Widget              frame;
 868     Arg                 args[64];
 869     int                 n;
 870     XmString            str;
 871     char                big_font[MAX_FONT_NAME_LEN];
 872     SharedFontSelData   *data;
 873
 874     data = &_data;
 875
 876     parent = vimShell;
 877     data->names = XListFonts(XtDisplay(parent), "-*-*-*-*-*-*-*-*-*-*-*-*-*-*",
 878                                                        MAX_FONTS, &data->num);
 879
 880     /*
 881      * Find the name of the biggest font less than the given limit
 882      * MAX_DISPLAY_SIZE used to set up the initial height of the display
 883      * widget.
 884      */
 885
 886     {
 887         int     i;
 888         int     max;
 889         int     index = 0;
 890         int     size;
 891         char    str[128];
 892
 893         for (i = 0, max = 0; i < data->num; i++)
 894         {
 895             get_part(fn(data, i), 7, str);
 896             size = atoi(str);
 897             if ((size > max) && (size < MAX_DISPLAY_SIZE))
 898             {
 899                 index = i;
 900                 max = size;
 901             }
 902         }
 903         strcpy(big_font, fn(data, index));
 904     }
 905     data->old = XLoadQueryFont(XtDisplay(parent), big_font);
 906     data->old_list = gui_motif_create_fontlist(data->old);
 907
 908     /* Set the title of the Dialog window. */
 909     data->dialog = XmCreateDialogShell(parent, "fontSelector", NULL, 0);
 910     str = XmStringCreateLocalized(_("Vim - Font Selector"));
 911
 912     /* Create form popup dialog widget. */
 913     form = XtVaCreateWidget("form",
 914             xmFormWidgetClass, data->dialog,
 915             XmNdialogTitle, str,
 916             XmNautoUnmanage, False,
 917             XmNdialogStyle, XmDIALOG_FULL_APPLICATION_MODAL,
 918             NULL);
 919     XmStringFree(str);
 920
 921     sub_form = XtVaCreateManagedWidget("subForm",
 922             xmFormWidgetClass, form,
 923             XmNbottomAttachment, XmATTACH_FORM,
 924             XmNbottomOffset, 4,
 925             XmNrightAttachment, XmATTACH_FORM,
 926             XmNrightOffset, 4,
 927             XmNtopAttachment, XmATTACH_FORM,
 928             XmNtopOffset, 4,
 929             XmNorientation, XmVERTICAL,
 930             NULL);
 931
 932     data->ok = XtVaCreateManagedWidget(_("OK"),
 933             xmPushButtonGadgetClass, sub_form,
 934             XmNleftAttachment, XmATTACH_FORM,
 935             XmNrightAttachment, XmATTACH_FORM,
 936             XmNtopAttachment, XmATTACH_FORM,
 937             XmNtopOffset, 4,
 938             NULL);
 939     apply_fontlist(data->ok);
 940
 941     data->cancel = XtVaCreateManagedWidget(_("Cancel"),
 942             xmPushButtonGadgetClass, sub_form,
 943             XmNrightAttachment, XmATTACH_FORM,
 944             XmNleftAttachment, XmATTACH_FORM,
 945             XmNtopAttachment, XmATTACH_WIDGET,
 946             XmNtopWidget, data->ok,
 947             XmNtopOffset, 4,
 948             XmNshowAsDefault, True,
 949             NULL);
 950     apply_fontlist(data->cancel);
 951
 952     /* Create the separator for beauty. */
 953     n = 0;
 954     XtSetArg(args[n], XmNorientation, XmVERTICAL); n++;
 955     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
 956     XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
 957     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); n++;
 958     XtSetArg(args[n], XmNrightWidget, sub_form); n++;
 959     XtSetArg(args[n], XmNrightOffset, 4); n++;
 960     separator = XmCreateSeparatorGadget(form, "separator", args, n);
 961     XtManageChild(separator);
 962
 963     /* Create font name text widget and the corresponding label. */
 964     data->name = XtVaCreateManagedWidget("fontName",
 965             xmTextWidgetClass, form,
 966             XmNbottomAttachment, XmATTACH_FORM,
 967             XmNbottomOffset, 4,
 968             XmNleftAttachment, XmATTACH_FORM,
 969             XmNleftOffset, 4,
 970             XmNrightAttachment, XmATTACH_WIDGET,
 971             XmNrightWidget, separator,
 972             XmNrightOffset, 4,
 973             XmNeditable, False,
 974             XmNeditMode, XmSINGLE_LINE_EDIT,
 975             XmNmaxLength, MAX_FONT_NAME_LEN,
 976             XmNcolumns, 60,
 977             NULL);
 978
 979     str = XmStringCreateLocalized(_("Name:"));
 980     name = XtVaCreateManagedWidget("fontNameLabel",
 981             xmLabelGadgetClass, form,
 982             XmNlabelString, str,
 983             XmNuserData, data->name,
 984             XmNleftAttachment, XmATTACH_OPPOSITE_WIDGET,
 985             XmNleftWidget, data->name,
 986             XmNbottomAttachment, XmATTACH_WIDGET,
 987             XmNbottomWidget, data->name,
 988             XmNtopOffset, 1,
 989             NULL);
 990     XmStringFree(str);
 991     apply_fontlist(name);
 992
 993     /* create sample display label widget */
 994     disp_frame = XtVaCreateManagedWidget("sampleFrame",
 995             xmFrameWidgetClass, form,
 996             XmNshadowType, XmSHADOW_ETCHED_IN,
 997             XmNleftAttachment, XmATTACH_FORM,
 998             XmNleftOffset, 4,
 999             XmNbottomAttachment, XmATTACH_WIDGET,
1000             XmNbottomWidget, name,
1001             XmNrightAttachment, XmATTACH_WIDGET,
1002             XmNrightWidget, separator,
1003             XmNrightOffset, 4,
1004             XmNalignment, XmALIGNMENT_BEGINNING,
1005             NULL);
1006
1007     data->sample = XtVaCreateManagedWidget("sampleLabel",
1008             xmLabelWidgetClass, disp_frame,
1009             XmNleftAttachment, XmATTACH_FORM,
1010             XmNtopAttachment, XmATTACH_FORM,
1011             XmNbottomAttachment, XmATTACH_FORM,
1012             XmNrightAttachment, XmATTACH_FORM,
1013             XmNalignment, XmALIGNMENT_BEGINNING,
1014             XmNrecomputeSize, False,
1015             XmNfontList, data->old_list,
1016             NULL);
1017
1018     /* create toggle button */
1019     str = XmStringCreateLocalized(_("Show size in Points"));
1020     size_toggle = XtVaCreateManagedWidget("sizeToggle",
1021             xmToggleButtonGadgetClass, form,
1022             XmNlabelString, str,
1023             XmNleftAttachment, XmATTACH_FORM,
1024             XmNleftOffset, 4,
1025             XmNbottomAttachment, XmATTACH_WIDGET,
1026             XmNbottomWidget, disp_frame,
1027             XmNbottomOffset, 4,
1028             NULL);
1029     XmStringFree(str);
1030     apply_fontlist(size_toggle);
1031     XtManageChild(size_toggle);
1032
1033     /* Encoding pulldown menu.
1034      */
1035
1036     data->encoding_pulldown = XmCreatePulldownMenu(form,
1037                                                  "encodingPulldown", NULL, 0);
1038     str = XmStringCreateLocalized(_("Encoding:"));
1039     n = 0;
1040     XtSetArg(args[n], XmNsubMenuId, data->encoding_pulldown); ++n;
1041     XtSetArg(args[n], XmNlabelString, str); ++n;
1042     XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); ++n;
1043     XtSetArg(args[n], XmNleftOffset, 4); ++n;
1044     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_WIDGET); ++n;
1045     XtSetArg(args[n], XmNbottomWidget, size_toggle); ++n;
1046     XtSetArg(args[n], XmNbottomOffset, 4); ++n;
1047     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); ++n;
1048     XtSetArg(args[n], XmNrightWidget, separator); ++n;
1049     XtSetArg(args[n], XmNrightOffset, 4); ++n;
1050     data->encoding_menu = XmCreateOptionMenu(form, "encodingMenu", args, n);
1051     XmStringFree(str);
1052     XmAddTabGroup(data->encoding_menu);
1053
1054     /*
1055      * Create scroll list widgets in a separate subform used to manage the
1056      * different sizes of the lists.
1057      */
1058
1059     sub_form = XtVaCreateManagedWidget("subForm",
1060             xmFormWidgetClass, form,
1061             XmNbottomAttachment, XmATTACH_WIDGET,
1062             XmNbottomWidget, data->encoding_menu,
1063             XmNbottomOffset, 4,
1064             XmNleftAttachment, XmATTACH_FORM,
1065             XmNleftOffset, 4,
1066             XmNrightAttachment, XmATTACH_WIDGET,
1067             XmNrightWidget, separator,
1068             XmNrightOffset, 4,
1069             XmNtopAttachment, XmATTACH_FORM,
1070             XmNtopOffset, 2,
1071             XmNorientation, XmVERTICAL,
1072             NULL);
1073
1074     /* font list */
1075     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1076             XmNshadowThickness, 0,
1077             XmNtopAttachment, XmATTACH_FORM,
1078             XmNbottomAttachment, XmATTACH_FORM,
1079             XmNleftAttachment, XmATTACH_FORM,
1080             XmNrightAttachment, XmATTACH_POSITION,
1081             XmNrightPosition, 50,
1082             NULL);
1083
1084     str = XmStringCreateLocalized(_("Font:"));
1085     name = XtVaCreateManagedWidget("nameListLabel", xmLabelGadgetClass, frame,
1086             XmNchildType, XmFRAME_TITLE_CHILD,
1087             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1088             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1089             XmNlabelString, str,
1090             NULL);
1091     XmStringFree(str);
1092     apply_fontlist(name);
1093
1094     n = 0;
1095     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1096     XtSetArg(args[n], XmNresizable, True); ++n;
1097     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1098     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1099 #ifdef LESSTIF_VERSION
1100     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1101 #endif
1102     data->list[NAME] = XmCreateScrolledList(frame, "fontList", args, n);
1103     XtVaSetValues(name, XmNuserData, data->list[NAME], NULL);
1104
1105     /* style list */
1106     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1107             XmNshadowThickness, 0,
1108             XmNtopAttachment, XmATTACH_FORM,
1109             XmNbottomAttachment, XmATTACH_FORM,
1110             XmNleftAttachment, XmATTACH_POSITION,
1111             XmNleftPosition, 50,
1112             XmNleftOffset, 4,
1113             XmNrightAttachment, XmATTACH_POSITION,
1114             XmNrightPosition, 80,
1115             NULL);
1116
1117     str = XmStringCreateLocalized(_("Style:"));
1118     name = XtVaCreateManagedWidget("styleListLabel", xmLabelWidgetClass, frame,
1119             XmNchildType, XmFRAME_TITLE_CHILD,
1120             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1121             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1122             XmNlabelString, str,
1123             NULL);
1124     XmStringFree(str);
1125     apply_fontlist(name);
1126
1127     n = 0;
1128     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1129     XtSetArg(args[n], XmNresizable, True); ++n;
1130     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1131     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1132 #ifdef LESSTIF_VERSION
1133     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1134 #endif
1135     data->list[STYLE] = XmCreateScrolledList(frame, "styleList", args, n);
1136     XtVaSetValues(name, XmNuserData, data->list[STYLE], NULL);
1137
1138     /* size list */
1139     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1140             XmNshadowThickness, 0,
1141             XmNtopAttachment, XmATTACH_FORM,
1142             XmNbottomAttachment, XmATTACH_FORM,
1143             XmNleftAttachment, XmATTACH_POSITION,
1144             XmNleftPosition, 80,
1145             XmNleftOffset, 4,
1146             XmNrightAttachment, XmATTACH_FORM,
1147             NULL);
1148
1149     str = XmStringCreateLocalized(_("Size:"));
1150     name = XtVaCreateManagedWidget("sizeListLabel", xmLabelGadgetClass, frame,
1151             XmNchildType, XmFRAME_TITLE_CHILD,
1152             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1153             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1154             XmNlabelString, str,
1155             NULL);
1156     XmStringFree(str);
1157     apply_fontlist(name);
1158
1159     n = 0;
1160     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1161     XtSetArg(args[n], XmNresizable, True); ++n;
1162     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1163     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1164 #ifdef LESSTIF_VERSION
1165     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1166 #endif
1167     data->list[SIZE] = XmCreateScrolledList(frame, "sizeList", args, n);
1168     XtVaSetValues(name, XmNuserData, data->list[SIZE], NULL);
1169
1170     /* update form widgets cancel button */
1171     XtVaSetValues(form, XmNcancelButton, data->cancel, NULL);
1172
1173     XtAddCallback(size_toggle, XmNvalueChangedCallback,
1174             (XtCallbackProc)stoggle_callback, (XtPointer)data);
1175     XtAddCallback(data->list[NAME], XmNbrowseSelectionCallback,
1176             (XtCallbackProc)name_callback, (XtPointer)data);
1177     XtAddCallback(data->list[STYLE], XmNbrowseSelectionCallback,
1178             (XtCallbackProc)style_callback, (XtPointer)data);
1179     XtAddCallback(data->list[SIZE], XmNbrowseSelectionCallback,
1180             (XtCallbackProc)size_callback, (XtPointer)data);
1181     XtAddCallback(data->ok, XmNactivateCallback,
1182             (XtCallbackProc)ok_callback, (XtPointer)data);
1183     XtAddCallback(data->cancel, XmNactivateCallback,
1184             (XtCallbackProc)cancel_callback, (XtPointer)data);
1185
1186     XmProcessTraversal(data->list[NAME], XmTRAVERSE_CURRENT);
1187
1188     /* setup tabgroups */
1189
1190     XmAddTabGroup(data->list[NAME]);
1191     XmAddTabGroup(data->list[STYLE]);
1192     XmAddTabGroup(data->list[SIZE]);
1193     XmAddTabGroup(size_toggle);
1194     XmAddTabGroup(data->name);
1195     XmAddTabGroup(data->ok);
1196     XmAddTabGroup(data->cancel);
1197
1198     add_cancel_action(data->dialog, (XtCallbackProc)cancel_callback, data);
1199
1200     /* Preset selection data. */
1201
1202     data->exit = False;
1203     data->in_pixels= True;
1204     data->sel[ENCODING] = NULL;
1205     data->sel[NAME] = NULL;
1206     data->sel[STYLE] = NULL;
1207     data->sel[SIZE] = NULL;
1208     data->font_name = NULL;
1209
1210     /* set up current font parameters */
1211     if (current && current[0] != '\0')
1212     {
1213         int         i;
1214         char        **names;
1215
1216         names = XListFonts(XtDisplay(form), (char *) current, 1, &i);
1217
1218         if (i != 0)
1219         {
1220             char name[TEMP_BUF_SIZE];
1221             char style[TEMP_BUF_SIZE];
1222             char size[TEMP_BUF_SIZE];
1223             char encoding[TEMP_BUF_SIZE];
1224             char *found;
1225
1226             found = names[0];
1227
1228             name_part(found, name);
1229             style_part(found, style);
1230             size_part(found, size, data->in_pixels);
1231             encoding_part(found, encoding);
1232
1233             if (strlen(name) > 0
1234                     && strlen(style) > 0
1235                     && strlen(size) > 0
1236                     && strlen(encoding) > 0)
1237             {
1238                 data->sel[NAME] = XtNewString(name);
1239                 data->sel[STYLE] = XtNewString(style);
1240                 data->sel[SIZE] = XtNewString(size);
1241                 data->sel[ENCODING] = XtNewString(encoding);
1242                 data->font_name = XtNewString(names[0]);
1243                 display_sample(data);
1244                 XmTextSetString(data->name, data->font_name);
1245             }
1246             else
1247             {
1248                 /* We can't preset a symbolic name, which isn't a full font
1249                  * description. Therefore we just behave the same way as if the
1250                  * user didn't have selected anything thus far.
1251                  *
1252                  * Unfortunately there is no known way to expand an abbreviated
1253                  * font name.
1254                  */
1255
1256                 data->font_name = NULL;
1257             }
1258         }
1259         XFreeFontNames(names);
1260     }
1261
1262     fill_lists(NONE, data);
1263
1264     /* Unfortunately LessTif doesn't align the list widget's properly.  I don't
1265      * have currently any idea how to fix this problem.
1266      */
1267     XtManageChild(data->list[NAME]);
1268     XtManageChild(data->list[STYLE]);
1269     XtManageChild(data->list[SIZE]);
1270     XtManageChild(data->encoding_menu);
1271     manage_centered(form);
1272
1273     /* modal event loop */
1274     while (!data->exit)
1275         XtAppProcessEvent(XtWidgetToApplicationContext(data->dialog),
1276                                                         (XtInputMask)XtIMAll);
1277
1278     XtDestroyWidget(data->dialog);
1279
1280     if (data->old)
1281     {
1282         XFreeFont(XtDisplay(data->dialog),  data->old);
1283         XmFontListFree(data->old_list);
1284     }
1285
1286     gui_motif_synch_fonts();
1287
1288     return (char_u *) data->font_name;
1289 }