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, NULL);
  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         idx;
 373
 374     for (idx = (int)ENCODING; idx < (int)NONE; ++idx)
 375         count[idx] = 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 < (int)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 < (int)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 (idx = (int)NAME; idx < (int)NONE; ++idx)
 507     {
 508         Widget w;
 509
 510         if (fix == (enum ListSpecifier)idx)
 511             continue;
 512
 513         switch ((enum ListSpecifier)idx)
 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[idx]; ++i)
 529         {
 530             items[i] = XmStringCreateLocalized(list[idx][i]);
 531             XtFree(list[idx][i]);
 532         }
 533         XmListDeleteAllItems(w);
 534         XmListAddItems(w, items, count[idx], 1);
 535         if (data->sel[idx])
 536         {
 537             XmStringFree(items[0]);
 538             items[0] = XmStringCreateLocalized(data->sel[idx]);
 539             XmListSelectItem(w, items[0], False);
 540             XmListSetBottomItem(w, items[0]);
 541         }
 542         for (i = 0; i < count[idx]; ++i)
 543             XmStringFree(items[i]);
 544     }
 545 }
 546
 547     static void
 548 stoggle_callback(Widget w UNUSED,
 549         SharedFontSelData *data,
 550         XmToggleButtonCallbackStruct *call_data)
 551 {
 552     int         i, do_sel;
 553     char        newSize[TEMP_BUF_SIZE];
 554     XmString    str;
 555
 556     if (call_data->reason != (int)XmCR_VALUE_CHANGED)
 557         return;
 558
 559     do_sel = (data->sel[SIZE] != NULL) && strcmp(data->sel[SIZE], wild);
 560
 561     for (i = 0; do_sel && (i < data->num); i++)
 562         if (match(data, ENCODING, i)
 563                 && match(data, NAME, i)
 564                 && match(data, STYLE, i)
 565                 && match(data, SIZE, i))
 566         {
 567             size_part(fn(data, i), newSize, !data->in_pixels);
 568             break;
 569         }
 570
 571     data->in_pixels = !data->in_pixels;
 572
 573     if (data->sel[SIZE])
 574         XtFree(data->sel[SIZE]);
 575     data->sel[SIZE] = NULL;
 576     fill_lists(NONE, data);
 577
 578     if (do_sel)
 579     {
 580         str = XmStringCreateLocalized(newSize);
 581         XmListSelectItem(data->list[SIZE], str, True);
 582         XmListSetBottomItem(data->list[SIZE], str);
 583         XmStringFree(str);
 584     }
 585 }
 586
 587 /*
 588  * Show the currently selected font in the sample text label.
 589  */
 590     static void
 591 display_sample(SharedFontSelData *data)
 592 {
 593     Arg             args[2];
 594     int             n;
 595     XFontStruct *   font;
 596     XmFontList      font_list;
 597     Display *       display;
 598     XmString        str;
 599
 600     display = XtDisplay(data->dialog);
 601     font = XLoadQueryFont(display, data->font_name);
 602     font_list = gui_motif_create_fontlist(font);
 603
 604     n = 0;
 605     str = XmStringCreateLocalized("AaBbZzYy 0123456789");
 606     XtSetArg(args[n], XmNlabelString, str); n++;
 607     XtSetArg(args[n], XmNfontList, font_list); n++;
 608
 609     XtSetValues(data->sample, args, n);
 610     XmStringFree(str);
 611
 612     if (data->old)
 613     {
 614         XFreeFont(display, data->old);
 615         XmFontListFree(data->old_list);
 616     }
 617     data->old = font;
 618     data->old_list = font_list;
 619 }
 620
 621
 622     static Boolean
 623 do_choice(Widget w,
 624         SharedFontSelData *data,
 625         XmListCallbackStruct *call_data,
 626         enum ListSpecifier which)
 627 {
 628     char *sel;
 629
 630     XmStringGetLtoR(call_data->item, XmSTRING_DEFAULT_CHARSET, &sel);
 631
 632     if (!data->sel[which])
 633         data->sel[which] = XtNewString(sel);
 634     else
 635     {
 636         XtFree(data->sel[which]);
 637         if (!strcmp(data->sel[which], sel))
 638         {
 639             /* unselecting current selection */
 640             data->sel[which] = NULL;
 641             if (w)
 642                 XmListDeselectItem(w, call_data->item);
 643         }
 644         else
 645             data->sel[which] = XtNewString(sel);
 646     }
 647     XtFree(sel);
 648
 649     fill_lists(which, data);
 650
 651     /* If there is a font selection, we display it. */
 652     if (data->sel[ENCODING]
 653             && data->sel[NAME]
 654             && data->sel[STYLE]
 655             && data->sel[SIZE]
 656             && strcmp(data->sel[ENCODING], wild)
 657             && strcmp(data->sel[NAME], wild)
 658             && strcmp(data->sel[STYLE], wild)
 659             && strcmp(data->sel[SIZE], wild))
 660     {
 661         int i;
 662
 663         if (data->font_name)
 664             XtFree(data->font_name);
 665         data->font_name = NULL;
 666
 667         for (i = 0; i < data->num; i++)
 668         {
 669             if (match(data, ENCODING, i)
 670                     && match(data, NAME, i)
 671                     && match(data, STYLE, i)
 672                     && match(data, SIZE, i))
 673             {
 674                 data->font_name = XtNewString(fn(data, i));
 675                 break;
 676             }
 677         }
 678
 679         if (data->font_name)
 680         {
 681             XmTextSetString(data->name, data->font_name);
 682             display_sample(data);
 683         }
 684         else
 685             do_dialog(VIM_ERROR,
 686                     (char_u *)_("Error"),
 687                     (char_u *)_("Invalid font specification"),
 688                     (char_u *)_("&Dismiss"), 1, NULL);
 689
 690         return True;
 691     }
 692     else
 693     {
 694         int         n;
 695         XmString    str;
 696         Arg         args[4];
 697         char        *nomatch_msg = _("no specific match");
 698
 699         n = 0;
 700         str = XmStringCreateLocalized(nomatch_msg);
 701         XtSetArg(args[n], XmNlabelString, str); ++n;
 702         XtSetValues(data->sample, args, n);
 703         apply_fontlist(data->sample);
 704         XmTextSetString(data->name, nomatch_msg);
 705         XmStringFree(str);
 706
 707         return False;
 708     }
 709 }
 710
 711     static void
 712 encoding_callback(Widget w,
 713         SharedFontSelData *data,
 714         XtPointer dummy UNUSED)
 715 {
 716     XmString str;
 717     XmListCallbackStruct fake_data;
 718
 719     XtVaGetValues(w, XmNlabelString, &str, NULL);
 720
 721     if (!str)
 722         return;
 723
 724     fake_data.item = str;
 725
 726     do_choice(0, data, &fake_data, ENCODING);
 727 }
 728
 729     static void
 730 name_callback(Widget w,
 731         SharedFontSelData *data,
 732         XmListCallbackStruct *call_data)
 733 {
 734     do_choice(w, data, call_data, NAME);
 735 }
 736
 737     static void
 738 style_callback(Widget w,
 739         SharedFontSelData *data,
 740         XmListCallbackStruct *call_data)
 741 {
 742     do_choice(w, data, call_data, STYLE);
 743 }
 744
 745     static void
 746 size_callback(Widget w,
 747         SharedFontSelData *data,
 748         XmListCallbackStruct *call_data)
 749 {
 750     do_choice(w, data, call_data, SIZE);
 751 }
 752
 753     static void
 754 cancel_callback(Widget w UNUSED,
 755         SharedFontSelData *data,
 756         XmListCallbackStruct *call_data UNUSED)
 757 {
 758     if (data->sel[ENCODING])
 759     {
 760         XtFree(data->sel[ENCODING]);
 761         data->sel[ENCODING] = NULL;
 762     }
 763     if (data->sel[NAME])
 764     {
 765         XtFree(data->sel[NAME]);
 766         data->sel[NAME] = NULL;
 767     }
 768     if (data->sel[STYLE])
 769     {
 770         XtFree(data->sel[STYLE]);
 771         data->sel[STYLE] = NULL;
 772     }
 773     if (data->sel[SIZE])
 774     {
 775         XtFree(data->sel[SIZE]);
 776         data->sel[SIZE] = NULL;
 777     }
 778
 779     if (data->font_name)
 780         XtFree(data->font_name);
 781     data->font_name = NULL;
 782
 783     data->num = 0;
 784     XFreeFontNames(data->names);
 785     data->names = NULL;
 786     data->exit = True;
 787 }
 788
 789     static void
 790 ok_callback(Widget w UNUSED,
 791         SharedFontSelData *data,
 792         XmPushButtonCallbackStruct *call_data UNUSED)
 793 {
 794     char    *pattern;
 795     char    **name;
 796     int     i;
 797
 798     pattern = XmTextGetString(data->name);
 799     name    = XListFonts(XtDisplay(data->dialog), pattern, 1, &i);
 800     XtFree(pattern);
 801
 802     if (i != 1)
 803     {
 804         do_dialog(VIM_ERROR,
 805                 (char_u *)_("Error"),
 806                 (char_u *)_("Invalid font specification"),
 807                 (char_u *)_("&Dismiss"), 1, NULL);
 808         XFreeFontNames(name);
 809     }
 810     else
 811     {
 812         if (data->font_name)
 813             XtFree(data->font_name);
 814         data->font_name = XtNewString(name[0]);
 815
 816         if (data->sel[ENCODING])
 817         {
 818             XtFree(data->sel[ENCODING]);
 819             data->sel[ENCODING] = NULL;
 820         }
 821         if (data->sel[NAME])
 822         {
 823             XtFree(data->sel[NAME]);
 824             data->sel[NAME] = NULL;
 825         }
 826         if (data->sel[STYLE])
 827         {
 828             XtFree(data->sel[STYLE]);
 829             data->sel[STYLE] = NULL;
 830         }
 831         if (data->sel[SIZE])
 832         {
 833             XtFree(data->sel[SIZE]);
 834             data->sel[SIZE] = NULL;
 835         }
 836
 837         XFreeFontNames(name);
 838
 839         data->num = 0;
 840         XFreeFontNames(data->names);
 841         data->names = NULL;
 842         data->exit = True;
 843     }
 844 }
 845
 846 /*
 847  * Returns pointer to an ASCII character string that contains the name of the
 848  * selected font (in X format for naming fonts); it is the users responsibility
 849  * to free the space allocated to this string.
 850  */
 851     char_u *
 852 gui_xm_select_font(char_u *current)
 853 {
 854     static SharedFontSelData    _data;
 855
 856     Widget              parent;
 857     Widget              form;
 858     Widget              separator;
 859     Widget              sub_form;
 860     Widget              size_toggle;
 861     Widget              name;
 862     Widget              disp_frame;
 863     Widget              frame;
 864     Arg                 args[64];
 865     int                 n;
 866     XmString            str;
 867     char                big_font[MAX_FONT_NAME_LEN];
 868     SharedFontSelData   *data;
 869
 870     data = &_data;
 871
 872     parent = vimShell;
 873     data->names = XListFonts(XtDisplay(parent), "-*-*-*-*-*-*-*-*-*-*-*-*-*-*",
 874                                                        MAX_FONTS, &data->num);
 875
 876     /*
 877      * Find the name of the biggest font less than the given limit
 878      * MAX_DISPLAY_SIZE used to set up the initial height of the display
 879      * widget.
 880      */
 881
 882     {
 883         int     i;
 884         int     max;
 885         int     idx = 0;
 886         int     size;
 887         char    buf[128];
 888
 889         for (i = 0, max = 0; i < data->num; i++)
 890         {
 891             get_part(fn(data, i), 7, buf);
 892             size = atoi(buf);
 893             if ((size > max) && (size < MAX_DISPLAY_SIZE))
 894             {
 895                 idx = i;
 896                 max = size;
 897             }
 898         }
 899         strcpy(big_font, fn(data, idx));
 900     }
 901     data->old = XLoadQueryFont(XtDisplay(parent), big_font);
 902     data->old_list = gui_motif_create_fontlist(data->old);
 903
 904     /* Set the title of the Dialog window. */
 905     data->dialog = XmCreateDialogShell(parent, "fontSelector", NULL, 0);
 906     str = XmStringCreateLocalized(_("Vim - Font Selector"));
 907
 908     /* Create form popup dialog widget. */
 909     form = XtVaCreateWidget("form",
 910             xmFormWidgetClass, data->dialog,
 911             XmNdialogTitle, str,
 912             XmNautoUnmanage, False,
 913             XmNdialogStyle, XmDIALOG_FULL_APPLICATION_MODAL,
 914             NULL);
 915     XmStringFree(str);
 916
 917     sub_form = XtVaCreateManagedWidget("subForm",
 918             xmFormWidgetClass, form,
 919             XmNbottomAttachment, XmATTACH_FORM,
 920             XmNbottomOffset, 4,
 921             XmNrightAttachment, XmATTACH_FORM,
 922             XmNrightOffset, 4,
 923             XmNtopAttachment, XmATTACH_FORM,
 924             XmNtopOffset, 4,
 925             XmNorientation, XmVERTICAL,
 926             NULL);
 927
 928     data->ok = XtVaCreateManagedWidget(_("OK"),
 929             xmPushButtonGadgetClass, sub_form,
 930             XmNleftAttachment, XmATTACH_FORM,
 931             XmNrightAttachment, XmATTACH_FORM,
 932             XmNtopAttachment, XmATTACH_FORM,
 933             XmNtopOffset, 4,
 934             NULL);
 935     apply_fontlist(data->ok);
 936
 937     data->cancel = XtVaCreateManagedWidget(_("Cancel"),
 938             xmPushButtonGadgetClass, sub_form,
 939             XmNrightAttachment, XmATTACH_FORM,
 940             XmNleftAttachment, XmATTACH_FORM,
 941             XmNtopAttachment, XmATTACH_WIDGET,
 942             XmNtopWidget, data->ok,
 943             XmNtopOffset, 4,
 944             XmNshowAsDefault, True,
 945             NULL);
 946     apply_fontlist(data->cancel);
 947
 948     /* Create the separator for beauty. */
 949     n = 0;
 950     XtSetArg(args[n], XmNorientation, XmVERTICAL); n++;
 951     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
 952     XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
 953     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); n++;
 954     XtSetArg(args[n], XmNrightWidget, sub_form); n++;
 955     XtSetArg(args[n], XmNrightOffset, 4); n++;
 956     separator = XmCreateSeparatorGadget(form, "separator", args, n);
 957     XtManageChild(separator);
 958
 959     /* Create font name text widget and the corresponding label. */
 960     data->name = XtVaCreateManagedWidget("fontName",
 961             xmTextWidgetClass, form,
 962             XmNbottomAttachment, XmATTACH_FORM,
 963             XmNbottomOffset, 4,
 964             XmNleftAttachment, XmATTACH_FORM,
 965             XmNleftOffset, 4,
 966             XmNrightAttachment, XmATTACH_WIDGET,
 967             XmNrightWidget, separator,
 968             XmNrightOffset, 4,
 969             XmNeditable, False,
 970             XmNeditMode, XmSINGLE_LINE_EDIT,
 971             XmNmaxLength, MAX_FONT_NAME_LEN,
 972             XmNcolumns, 60,
 973             NULL);
 974
 975     str = XmStringCreateLocalized(_("Name:"));
 976     name = XtVaCreateManagedWidget("fontNameLabel",
 977             xmLabelGadgetClass, form,
 978             XmNlabelString, str,
 979             XmNuserData, data->name,
 980             XmNleftAttachment, XmATTACH_OPPOSITE_WIDGET,
 981             XmNleftWidget, data->name,
 982             XmNbottomAttachment, XmATTACH_WIDGET,
 983             XmNbottomWidget, data->name,
 984             XmNtopOffset, 1,
 985             NULL);
 986     XmStringFree(str);
 987     apply_fontlist(name);
 988
 989     /* create sample display label widget */
 990     disp_frame = XtVaCreateManagedWidget("sampleFrame",
 991             xmFrameWidgetClass, form,
 992             XmNshadowType, XmSHADOW_ETCHED_IN,
 993             XmNleftAttachment, XmATTACH_FORM,
 994             XmNleftOffset, 4,
 995             XmNbottomAttachment, XmATTACH_WIDGET,
 996             XmNbottomWidget, name,
 997             XmNrightAttachment, XmATTACH_WIDGET,
 998             XmNrightWidget, separator,
 999             XmNrightOffset, 4,
1000             XmNalignment, XmALIGNMENT_BEGINNING,
1001             NULL);
1002
1003     data->sample = XtVaCreateManagedWidget("sampleLabel",
1004             xmLabelWidgetClass, disp_frame,
1005             XmNleftAttachment, XmATTACH_FORM,
1006             XmNtopAttachment, XmATTACH_FORM,
1007             XmNbottomAttachment, XmATTACH_FORM,
1008             XmNrightAttachment, XmATTACH_FORM,
1009             XmNalignment, XmALIGNMENT_BEGINNING,
1010             XmNrecomputeSize, False,
1011             XmNfontList, data->old_list,
1012             NULL);
1013
1014     /* create toggle button */
1015     str = XmStringCreateLocalized(_("Show size in Points"));
1016     size_toggle = XtVaCreateManagedWidget("sizeToggle",
1017             xmToggleButtonGadgetClass, form,
1018             XmNlabelString, str,
1019             XmNleftAttachment, XmATTACH_FORM,
1020             XmNleftOffset, 4,
1021             XmNbottomAttachment, XmATTACH_WIDGET,
1022             XmNbottomWidget, disp_frame,
1023             XmNbottomOffset, 4,
1024             NULL);
1025     XmStringFree(str);
1026     apply_fontlist(size_toggle);
1027     XtManageChild(size_toggle);
1028
1029     /* Encoding pulldown menu.
1030      */
1031
1032     data->encoding_pulldown = XmCreatePulldownMenu(form,
1033                                                  "encodingPulldown", NULL, 0);
1034     str = XmStringCreateLocalized(_("Encoding:"));
1035     n = 0;
1036     XtSetArg(args[n], XmNsubMenuId, data->encoding_pulldown); ++n;
1037     XtSetArg(args[n], XmNlabelString, str); ++n;
1038     XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); ++n;
1039     XtSetArg(args[n], XmNleftOffset, 4); ++n;
1040     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_WIDGET); ++n;
1041     XtSetArg(args[n], XmNbottomWidget, size_toggle); ++n;
1042     XtSetArg(args[n], XmNbottomOffset, 4); ++n;
1043     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); ++n;
1044     XtSetArg(args[n], XmNrightWidget, separator); ++n;
1045     XtSetArg(args[n], XmNrightOffset, 4); ++n;
1046     data->encoding_menu = XmCreateOptionMenu(form, "encodingMenu", args, n);
1047     XmStringFree(str);
1048     XmAddTabGroup(data->encoding_menu);
1049
1050     /*
1051      * Create scroll list widgets in a separate subform used to manage the
1052      * different sizes of the lists.
1053      */
1054
1055     sub_form = XtVaCreateManagedWidget("subForm",
1056             xmFormWidgetClass, form,
1057             XmNbottomAttachment, XmATTACH_WIDGET,
1058             XmNbottomWidget, data->encoding_menu,
1059             XmNbottomOffset, 4,
1060             XmNleftAttachment, XmATTACH_FORM,
1061             XmNleftOffset, 4,
1062             XmNrightAttachment, XmATTACH_WIDGET,
1063             XmNrightWidget, separator,
1064             XmNrightOffset, 4,
1065             XmNtopAttachment, XmATTACH_FORM,
1066             XmNtopOffset, 2,
1067             XmNorientation, XmVERTICAL,
1068             NULL);
1069
1070     /* font list */
1071     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1072             XmNshadowThickness, 0,
1073             XmNtopAttachment, XmATTACH_FORM,
1074             XmNbottomAttachment, XmATTACH_FORM,
1075             XmNleftAttachment, XmATTACH_FORM,
1076             XmNrightAttachment, XmATTACH_POSITION,
1077             XmNrightPosition, 50,
1078             NULL);
1079
1080     str = XmStringCreateLocalized(_("Font:"));
1081     name = XtVaCreateManagedWidget("nameListLabel", xmLabelGadgetClass, frame,
1082             XmNchildType, XmFRAME_TITLE_CHILD,
1083             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1084             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1085             XmNlabelString, str,
1086             NULL);
1087     XmStringFree(str);
1088     apply_fontlist(name);
1089
1090     n = 0;
1091     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1092     XtSetArg(args[n], XmNresizable, True); ++n;
1093     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1094     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1095 #ifdef LESSTIF_VERSION
1096     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1097 #endif
1098     data->list[NAME] = XmCreateScrolledList(frame, "fontList", args, n);
1099     XtVaSetValues(name, XmNuserData, data->list[NAME], NULL);
1100
1101     /* style list */
1102     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1103             XmNshadowThickness, 0,
1104             XmNtopAttachment, XmATTACH_FORM,
1105             XmNbottomAttachment, XmATTACH_FORM,
1106             XmNleftAttachment, XmATTACH_POSITION,
1107             XmNleftPosition, 50,
1108             XmNleftOffset, 4,
1109             XmNrightAttachment, XmATTACH_POSITION,
1110             XmNrightPosition, 80,
1111             NULL);
1112
1113     str = XmStringCreateLocalized(_("Style:"));
1114     name = XtVaCreateManagedWidget("styleListLabel", xmLabelWidgetClass, frame,
1115             XmNchildType, XmFRAME_TITLE_CHILD,
1116             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1117             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1118             XmNlabelString, str,
1119             NULL);
1120     XmStringFree(str);
1121     apply_fontlist(name);
1122
1123     n = 0;
1124     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1125     XtSetArg(args[n], XmNresizable, True); ++n;
1126     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1127     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1128 #ifdef LESSTIF_VERSION
1129     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1130 #endif
1131     data->list[STYLE] = XmCreateScrolledList(frame, "styleList", args, n);
1132     XtVaSetValues(name, XmNuserData, data->list[STYLE], NULL);
1133
1134     /* size list */
1135     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1136             XmNshadowThickness, 0,
1137             XmNtopAttachment, XmATTACH_FORM,
1138             XmNbottomAttachment, XmATTACH_FORM,
1139             XmNleftAttachment, XmATTACH_POSITION,
1140             XmNleftPosition, 80,
1141             XmNleftOffset, 4,
1142             XmNrightAttachment, XmATTACH_FORM,
1143             NULL);
1144
1145     str = XmStringCreateLocalized(_("Size:"));
1146     name = XtVaCreateManagedWidget("sizeListLabel", xmLabelGadgetClass, frame,
1147             XmNchildType, XmFRAME_TITLE_CHILD,
1148             XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1149             XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1150             XmNlabelString, str,
1151             NULL);
1152     XmStringFree(str);
1153     apply_fontlist(name);
1154
1155     n = 0;
1156     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1157     XtSetArg(args[n], XmNresizable, True); ++n;
1158     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1159     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1160 #ifdef LESSTIF_VERSION
1161     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1162 #endif
1163     data->list[SIZE] = XmCreateScrolledList(frame, "sizeList", args, n);
1164     XtVaSetValues(name, XmNuserData, data->list[SIZE], NULL);
1165
1166     /* update form widgets cancel button */
1167     XtVaSetValues(form, XmNcancelButton, data->cancel, NULL);
1168
1169     XtAddCallback(size_toggle, XmNvalueChangedCallback,
1170             (XtCallbackProc)stoggle_callback, (XtPointer)data);
1171     XtAddCallback(data->list[NAME], XmNbrowseSelectionCallback,
1172             (XtCallbackProc)name_callback, (XtPointer)data);
1173     XtAddCallback(data->list[STYLE], XmNbrowseSelectionCallback,
1174             (XtCallbackProc)style_callback, (XtPointer)data);
1175     XtAddCallback(data->list[SIZE], XmNbrowseSelectionCallback,
1176             (XtCallbackProc)size_callback, (XtPointer)data);
1177     XtAddCallback(data->ok, XmNactivateCallback,
1178             (XtCallbackProc)ok_callback, (XtPointer)data);
1179     XtAddCallback(data->cancel, XmNactivateCallback,
1180             (XtCallbackProc)cancel_callback, (XtPointer)data);
1181
1182     XmProcessTraversal(data->list[NAME], XmTRAVERSE_CURRENT);
1183
1184     /* setup tabgroups */
1185
1186     XmAddTabGroup(data->list[NAME]);
1187     XmAddTabGroup(data->list[STYLE]);
1188     XmAddTabGroup(data->list[SIZE]);
1189     XmAddTabGroup(size_toggle);
1190     XmAddTabGroup(data->name);
1191     XmAddTabGroup(data->ok);
1192     XmAddTabGroup(data->cancel);
1193
1194     add_cancel_action(data->dialog, (XtCallbackProc)cancel_callback, data);
1195
1196     /* Preset selection data. */
1197
1198     data->exit = False;
1199     data->in_pixels= True;
1200     data->sel[ENCODING] = NULL;
1201     data->sel[NAME] = NULL;
1202     data->sel[STYLE] = NULL;
1203     data->sel[SIZE] = NULL;
1204     data->font_name = NULL;
1205
1206     /* set up current font parameters */
1207     if (current && current[0] != '\0')
1208     {
1209         int         i;
1210         char        **names;
1211
1212         names = XListFonts(XtDisplay(form), (char *) current, 1, &i);
1213
1214         if (i != 0)
1215         {
1216             char namebuf[TEMP_BUF_SIZE];
1217             char stylebuf[TEMP_BUF_SIZE];
1218             char sizebuf[TEMP_BUF_SIZE];
1219             char encodingbuf[TEMP_BUF_SIZE];
1220             char *found;
1221
1222             found = names[0];
1223
1224             name_part(found, namebuf);
1225             style_part(found, stylebuf);
1226             size_part(found, sizebuf, data->in_pixels);
1227             encoding_part(found, encodingbuf);
1228
1229             if (strlen(namebuf) > 0
1230                     && strlen(stylebuf) > 0
1231                     && strlen(sizebuf) > 0
1232                     && strlen(encodingbuf) > 0)
1233             {
1234                 data->sel[NAME] = XtNewString(namebuf);
1235                 data->sel[STYLE] = XtNewString(stylebuf);
1236                 data->sel[SIZE] = XtNewString(sizebuf);
1237                 data->sel[ENCODING] = XtNewString(encodingbuf);
1238                 data->font_name = XtNewString(names[0]);
1239                 display_sample(data);
1240                 XmTextSetString(data->name, data->font_name);
1241             }
1242             else
1243             {
1244                 /* We can't preset a symbolic name, which isn't a full font
1245                  * description. Therefore we just behave the same way as if the
1246                  * user didn't have selected anything thus far.
1247                  *
1248                  * Unfortunately there is no known way to expand an abbreviated
1249                  * font name.
1250                  */
1251
1252                 data->font_name = NULL;
1253             }
1254         }
1255         XFreeFontNames(names);
1256     }
1257
1258     fill_lists(NONE, data);
1259
1260     /* Unfortunately LessTif doesn't align the list widget's properly.  I don't
1261      * have currently any idea how to fix this problem.
1262      */
1263     XtManageChild(data->list[NAME]);
1264     XtManageChild(data->list[STYLE]);
1265     XtManageChild(data->list[SIZE]);
1266     XtManageChild(data->encoding_menu);
1267     manage_centered(form);
1268
1269     /* modal event loop */
1270     while (!data->exit)
1271         XtAppProcessEvent(XtWidgetToApplicationContext(data->dialog),
1272                                                         (XtInputMask)XtIMAll);
1273
1274     XtDestroyWidget(data->dialog);
1275
1276     if (data->old)
1277     {
1278         XFreeFont(XtDisplay(data->dialog),  data->old);
1279         XmFontListFree(data->old_list);
1280     }
1281
1282     gui_motif_synch_fonts();
1283
1284     return (char_u *) data->font_name;
1285 }