xref: /vim-8.2.3635/src/gui_xmdlg.c (revision 2bf24176)
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 <[email protected]>
12  *
13  * Implementation of dialog 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 (*buf3 != NUL)
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 (*buf != NUL)
229 	{
230 	    size = atoi(buf);
231 	    sprintf(buf, "%3d", size);
232 	}
233     }
234     else
235     {
236 	get_part(font, 8, buf);
237 	if (*buf != NUL)
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 (*buf1 != NUL && *buf2 != NUL)
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 	if (!strcmp(data->sel[which], sel))
637 	{
638 	    /* unselecting current selection */
639 	    XtFree(data->sel[which]);
640 	    data->sel[which] = NULL;
641 	    if (w)
642 		XmListDeselectItem(w, call_data->item);
643 	}
644 	else
645 	{
646 	    XtFree(data->sel[which]);
647 	    data->sel[which] = XtNewString(sel);
648 	}
649     }
650     XtFree(sel);
651 
652     fill_lists(which, data);
653 
654     /* If there is a font selection, we display it. */
655     if (data->sel[ENCODING]
656 	    && data->sel[NAME]
657 	    && data->sel[STYLE]
658 	    && data->sel[SIZE]
659 	    && strcmp(data->sel[ENCODING], wild)
660 	    && strcmp(data->sel[NAME], wild)
661 	    && strcmp(data->sel[STYLE], wild)
662 	    && strcmp(data->sel[SIZE], wild))
663     {
664 	int i;
665 
666 	if (data->font_name)
667 	    XtFree(data->font_name);
668 	data->font_name = NULL;
669 
670 	for (i = 0; i < data->num; i++)
671 	{
672 	    if (match(data, ENCODING, i)
673 		    && match(data, NAME, i)
674 		    && match(data, STYLE, i)
675 		    && match(data, SIZE, i))
676 	    {
677 		data->font_name = XtNewString(fn(data, i));
678 		break;
679 	    }
680 	}
681 
682 	if (data->font_name)
683 	{
684 	    XmTextSetString(data->name, data->font_name);
685 	    display_sample(data);
686 	}
687 	else
688 	    do_dialog(VIM_ERROR,
689 		    (char_u *)_("Error"),
690 		    (char_u *)_("Invalid font specification"),
691 		    (char_u *)_("&Dismiss"), 1, NULL, FALSE);
692 
693 	return True;
694     }
695     else
696     {
697 	int	    n;
698 	XmString    str;
699 	Arg	    args[4];
700 	char	    *nomatch_msg = _("no specific match");
701 
702 	n = 0;
703 	str = XmStringCreateLocalized(nomatch_msg);
704 	XtSetArg(args[n], XmNlabelString, str); ++n;
705 	XtSetValues(data->sample, args, n);
706 	apply_fontlist(data->sample);
707 	XmTextSetString(data->name, nomatch_msg);
708 	XmStringFree(str);
709 
710 	return False;
711     }
712 }
713 
714     static void
715 encoding_callback(Widget w,
716 	SharedFontSelData *data,
717 	XtPointer dummy UNUSED)
718 {
719     XmString str;
720     XmListCallbackStruct fake_data;
721 
722     XtVaGetValues(w, XmNlabelString, &str, NULL);
723 
724     if (!str)
725 	return;
726 
727     fake_data.item = str;
728 
729     do_choice(0, data, &fake_data, ENCODING);
730 }
731 
732     static void
733 name_callback(Widget w,
734 	SharedFontSelData *data,
735 	XmListCallbackStruct *call_data)
736 {
737     do_choice(w, data, call_data, NAME);
738 }
739 
740     static void
741 style_callback(Widget w,
742 	SharedFontSelData *data,
743 	XmListCallbackStruct *call_data)
744 {
745     do_choice(w, data, call_data, STYLE);
746 }
747 
748     static void
749 size_callback(Widget w,
750 	SharedFontSelData *data,
751 	XmListCallbackStruct *call_data)
752 {
753     do_choice(w, data, call_data, SIZE);
754 }
755 
756     static void
757 cancel_callback(Widget w UNUSED,
758 	SharedFontSelData *data,
759 	XmListCallbackStruct *call_data UNUSED)
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     static void
793 ok_callback(Widget w UNUSED,
794 	SharedFontSelData *data,
795 	XmPushButtonCallbackStruct *call_data UNUSED)
796 {
797     char    *pattern;
798     char    **name;
799     int	    i;
800 
801     pattern = XmTextGetString(data->name);
802     name    = XListFonts(XtDisplay(data->dialog), pattern, 1, &i);
803     XtFree(pattern);
804 
805     if (i != 1)
806     {
807 	do_dialog(VIM_ERROR,
808 		(char_u *)_("Error"),
809 		(char_u *)_("Invalid font specification"),
810 		(char_u *)_("&Dismiss"), 1, NULL, FALSE);
811 	XFreeFontNames(name);
812     }
813     else
814     {
815 	if (data->font_name)
816 	    XtFree(data->font_name);
817 	data->font_name = XtNewString(name[0]);
818 
819 	if (data->sel[ENCODING])
820 	{
821 	    XtFree(data->sel[ENCODING]);
822 	    data->sel[ENCODING] = NULL;
823 	}
824 	if (data->sel[NAME])
825 	{
826 	    XtFree(data->sel[NAME]);
827 	    data->sel[NAME] = NULL;
828 	}
829 	if (data->sel[STYLE])
830 	{
831 	    XtFree(data->sel[STYLE]);
832 	    data->sel[STYLE] = NULL;
833 	}
834 	if (data->sel[SIZE])
835 	{
836 	    XtFree(data->sel[SIZE]);
837 	    data->sel[SIZE] = NULL;
838 	}
839 
840 	XFreeFontNames(name);
841 
842 	data->num = 0;
843 	XFreeFontNames(data->names);
844 	data->names = NULL;
845 	data->exit = True;
846     }
847 }
848 
849 /*
850  * Returns pointer to an ASCII character string that contains the name of the
851  * selected font (in X format for naming fonts); it is the users responsibility
852  * to free the space allocated to this string.
853  */
854     char_u *
855 gui_xm_select_font(char_u *current)
856 {
857     static SharedFontSelData	_data;
858 
859     Widget		parent;
860     Widget		form;
861     Widget		separator;
862     Widget		sub_form;
863     Widget		size_toggle;
864     Widget		name;
865     Widget		disp_frame;
866     Widget		frame;
867     Arg			args[64];
868     int			n;
869     XmString		str;
870     char		big_font[MAX_FONT_NAME_LEN];
871     SharedFontSelData	*data;
872 
873     data = &_data;
874 
875     parent = vimShell;
876     data->names = XListFonts(XtDisplay(parent), "-*-*-*-*-*-*-*-*-*-*-*-*-*-*",
877 						       MAX_FONTS, &data->num);
878 
879     /*
880      * Find the name of the biggest font less than the given limit
881      * MAX_DISPLAY_SIZE used to set up the initial height of the display
882      * widget.
883      */
884 
885     {
886 	int	i;
887 	int	max;
888 	int	idx = 0;
889 	int	size;
890 	char	buf[128];
891 
892 	for (i = 0, max = 0; i < data->num; i++)
893 	{
894 	    get_part(fn(data, i), 7, buf);
895 	    size = atoi(buf);
896 	    if ((size > max) && (size < MAX_DISPLAY_SIZE))
897 	    {
898 		idx = i;
899 		max = size;
900 	    }
901 	}
902 	strcpy(big_font, fn(data, idx));
903     }
904     data->old = XLoadQueryFont(XtDisplay(parent), big_font);
905     data->old_list = gui_motif_create_fontlist(data->old);
906 
907     /* Set the title of the Dialog window. */
908     data->dialog = XmCreateDialogShell(parent, "fontSelector", NULL, 0);
909     str = XmStringCreateLocalized(_("Vim - Font Selector"));
910 
911     /* Create form popup dialog widget. */
912     form = XtVaCreateWidget("form",
913 	    xmFormWidgetClass, data->dialog,
914 	    XmNdialogTitle, str,
915 	    XmNautoUnmanage, False,
916 	    XmNdialogStyle, XmDIALOG_FULL_APPLICATION_MODAL,
917 	    NULL);
918     XmStringFree(str);
919 
920     sub_form = XtVaCreateManagedWidget("subForm",
921 	    xmFormWidgetClass, form,
922 	    XmNbottomAttachment, XmATTACH_FORM,
923 	    XmNbottomOffset, 4,
924 	    XmNrightAttachment, XmATTACH_FORM,
925 	    XmNrightOffset, 4,
926 	    XmNtopAttachment, XmATTACH_FORM,
927 	    XmNtopOffset, 4,
928 	    XmNorientation, XmVERTICAL,
929 	    NULL);
930 
931     data->ok = XtVaCreateManagedWidget(_("OK"),
932 	    xmPushButtonGadgetClass, sub_form,
933 	    XmNleftAttachment, XmATTACH_FORM,
934 	    XmNrightAttachment, XmATTACH_FORM,
935 	    XmNtopAttachment, XmATTACH_FORM,
936 	    XmNtopOffset, 4,
937 	    NULL);
938     apply_fontlist(data->ok);
939 
940     data->cancel = XtVaCreateManagedWidget(_("Cancel"),
941 	    xmPushButtonGadgetClass, sub_form,
942 	    XmNrightAttachment, XmATTACH_FORM,
943 	    XmNleftAttachment, XmATTACH_FORM,
944 	    XmNtopAttachment, XmATTACH_WIDGET,
945 	    XmNtopWidget, data->ok,
946 	    XmNtopOffset, 4,
947 	    XmNshowAsDefault, True,
948 	    NULL);
949     apply_fontlist(data->cancel);
950 
951     /* Create the separator for beauty. */
952     n = 0;
953     XtSetArg(args[n], XmNorientation, XmVERTICAL); n++;
954     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
955     XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
956     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); n++;
957     XtSetArg(args[n], XmNrightWidget, sub_form); n++;
958     XtSetArg(args[n], XmNrightOffset, 4); n++;
959     separator = XmCreateSeparatorGadget(form, "separator", args, n);
960     XtManageChild(separator);
961 
962     /* Create font name text widget and the corresponding label. */
963     data->name = XtVaCreateManagedWidget("fontName",
964 	    xmTextWidgetClass, form,
965 	    XmNbottomAttachment, XmATTACH_FORM,
966 	    XmNbottomOffset, 4,
967 	    XmNleftAttachment, XmATTACH_FORM,
968 	    XmNleftOffset, 4,
969 	    XmNrightAttachment, XmATTACH_WIDGET,
970 	    XmNrightWidget, separator,
971 	    XmNrightOffset, 4,
972 	    XmNeditable, False,
973 	    XmNeditMode, XmSINGLE_LINE_EDIT,
974 	    XmNmaxLength, MAX_FONT_NAME_LEN,
975 	    XmNcolumns, 60,
976 	    NULL);
977 
978     str = XmStringCreateLocalized(_("Name:"));
979     name = XtVaCreateManagedWidget("fontNameLabel",
980 	    xmLabelGadgetClass, form,
981 	    XmNlabelString, str,
982 	    XmNuserData, data->name,
983 	    XmNleftAttachment, XmATTACH_OPPOSITE_WIDGET,
984 	    XmNleftWidget, data->name,
985 	    XmNbottomAttachment, XmATTACH_WIDGET,
986 	    XmNbottomWidget, data->name,
987 	    XmNtopOffset, 1,
988 	    NULL);
989     XmStringFree(str);
990     apply_fontlist(name);
991 
992     /* create sample display label widget */
993     disp_frame = XtVaCreateManagedWidget("sampleFrame",
994 	    xmFrameWidgetClass, form,
995 	    XmNshadowType, XmSHADOW_ETCHED_IN,
996 	    XmNleftAttachment, XmATTACH_FORM,
997 	    XmNleftOffset, 4,
998 	    XmNbottomAttachment, XmATTACH_WIDGET,
999 	    XmNbottomWidget, name,
1000 	    XmNrightAttachment, XmATTACH_WIDGET,
1001 	    XmNrightWidget, separator,
1002 	    XmNrightOffset, 4,
1003 	    XmNalignment, XmALIGNMENT_BEGINNING,
1004 	    NULL);
1005 
1006     data->sample = XtVaCreateManagedWidget("sampleLabel",
1007 	    xmLabelWidgetClass, disp_frame,
1008 	    XmNleftAttachment, XmATTACH_FORM,
1009 	    XmNtopAttachment, XmATTACH_FORM,
1010 	    XmNbottomAttachment, XmATTACH_FORM,
1011 	    XmNrightAttachment, XmATTACH_FORM,
1012 	    XmNalignment, XmALIGNMENT_BEGINNING,
1013 	    XmNrecomputeSize, False,
1014 	    XmNfontList, data->old_list,
1015 	    NULL);
1016 
1017     /* create toggle button */
1018     str = XmStringCreateLocalized(_("Show size in Points"));
1019     size_toggle = XtVaCreateManagedWidget("sizeToggle",
1020 	    xmToggleButtonGadgetClass, form,
1021 	    XmNlabelString, str,
1022 	    XmNleftAttachment, XmATTACH_FORM,
1023 	    XmNleftOffset, 4,
1024 	    XmNbottomAttachment, XmATTACH_WIDGET,
1025 	    XmNbottomWidget, disp_frame,
1026 	    XmNbottomOffset, 4,
1027 	    NULL);
1028     XmStringFree(str);
1029     apply_fontlist(size_toggle);
1030     XtManageChild(size_toggle);
1031 
1032     /* Encoding pulldown menu.
1033      */
1034 
1035     data->encoding_pulldown = XmCreatePulldownMenu(form,
1036 						 "encodingPulldown", NULL, 0);
1037     str = XmStringCreateLocalized(_("Encoding:"));
1038     n = 0;
1039     XtSetArg(args[n], XmNsubMenuId, data->encoding_pulldown); ++n;
1040     XtSetArg(args[n], XmNlabelString, str); ++n;
1041     XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); ++n;
1042     XtSetArg(args[n], XmNleftOffset, 4); ++n;
1043     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_WIDGET); ++n;
1044     XtSetArg(args[n], XmNbottomWidget, size_toggle); ++n;
1045     XtSetArg(args[n], XmNbottomOffset, 4); ++n;
1046     XtSetArg(args[n], XmNrightAttachment, XmATTACH_WIDGET); ++n;
1047     XtSetArg(args[n], XmNrightWidget, separator); ++n;
1048     XtSetArg(args[n], XmNrightOffset, 4); ++n;
1049     data->encoding_menu = XmCreateOptionMenu(form, "encodingMenu", args, n);
1050     XmStringFree(str);
1051     XmAddTabGroup(data->encoding_menu);
1052 
1053     /*
1054      * Create scroll list widgets in a separate subform used to manage the
1055      * different sizes of the lists.
1056      */
1057 
1058     sub_form = XtVaCreateManagedWidget("subForm",
1059 	    xmFormWidgetClass, form,
1060 	    XmNbottomAttachment, XmATTACH_WIDGET,
1061 	    XmNbottomWidget, data->encoding_menu,
1062 	    XmNbottomOffset, 4,
1063 	    XmNleftAttachment, XmATTACH_FORM,
1064 	    XmNleftOffset, 4,
1065 	    XmNrightAttachment, XmATTACH_WIDGET,
1066 	    XmNrightWidget, separator,
1067 	    XmNrightOffset, 4,
1068 	    XmNtopAttachment, XmATTACH_FORM,
1069 	    XmNtopOffset, 2,
1070 	    XmNorientation, XmVERTICAL,
1071 	    NULL);
1072 
1073     /* font list */
1074     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1075 	    XmNshadowThickness, 0,
1076 	    XmNtopAttachment, XmATTACH_FORM,
1077 	    XmNbottomAttachment, XmATTACH_FORM,
1078 	    XmNleftAttachment, XmATTACH_FORM,
1079 	    XmNrightAttachment, XmATTACH_POSITION,
1080 	    XmNrightPosition, 50,
1081 	    NULL);
1082 
1083     str = XmStringCreateLocalized(_("Font:"));
1084     name = XtVaCreateManagedWidget("nameListLabel", xmLabelGadgetClass, frame,
1085 	    XmNchildType, XmFRAME_TITLE_CHILD,
1086 	    XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1087 	    XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1088 	    XmNlabelString, str,
1089 	    NULL);
1090     XmStringFree(str);
1091     apply_fontlist(name);
1092 
1093     n = 0;
1094     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1095     XtSetArg(args[n], XmNresizable, True); ++n;
1096     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1097     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1098 #ifdef LESSTIF_VERSION
1099     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1100 #endif
1101     data->list[NAME] = XmCreateScrolledList(frame, "fontList", args, n);
1102     XtVaSetValues(name, XmNuserData, data->list[NAME], NULL);
1103 
1104     /* style list */
1105     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1106 	    XmNshadowThickness, 0,
1107 	    XmNtopAttachment, XmATTACH_FORM,
1108 	    XmNbottomAttachment, XmATTACH_FORM,
1109 	    XmNleftAttachment, XmATTACH_POSITION,
1110 	    XmNleftPosition, 50,
1111 	    XmNleftOffset, 4,
1112 	    XmNrightAttachment, XmATTACH_POSITION,
1113 	    XmNrightPosition, 80,
1114 	    NULL);
1115 
1116     str = XmStringCreateLocalized(_("Style:"));
1117     name = XtVaCreateManagedWidget("styleListLabel", xmLabelWidgetClass, frame,
1118 	    XmNchildType, XmFRAME_TITLE_CHILD,
1119 	    XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1120 	    XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1121 	    XmNlabelString, str,
1122 	    NULL);
1123     XmStringFree(str);
1124     apply_fontlist(name);
1125 
1126     n = 0;
1127     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1128     XtSetArg(args[n], XmNresizable, True); ++n;
1129     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1130     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1131 #ifdef LESSTIF_VERSION
1132     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1133 #endif
1134     data->list[STYLE] = XmCreateScrolledList(frame, "styleList", args, n);
1135     XtVaSetValues(name, XmNuserData, data->list[STYLE], NULL);
1136 
1137     /* size list */
1138     frame = XtVaCreateManagedWidget("frame", xmFrameWidgetClass, sub_form,
1139 	    XmNshadowThickness, 0,
1140 	    XmNtopAttachment, XmATTACH_FORM,
1141 	    XmNbottomAttachment, XmATTACH_FORM,
1142 	    XmNleftAttachment, XmATTACH_POSITION,
1143 	    XmNleftPosition, 80,
1144 	    XmNleftOffset, 4,
1145 	    XmNrightAttachment, XmATTACH_FORM,
1146 	    NULL);
1147 
1148     str = XmStringCreateLocalized(_("Size:"));
1149     name = XtVaCreateManagedWidget("sizeListLabel", xmLabelGadgetClass, frame,
1150 	    XmNchildType, XmFRAME_TITLE_CHILD,
1151 	    XmNchildVerticalAlignment, XmALIGNMENT_CENTER,
1152 	    XmNchildHorizontalAlignment, XmALIGNMENT_BEGINNING,
1153 	    XmNlabelString, str,
1154 	    NULL);
1155     XmStringFree(str);
1156     apply_fontlist(name);
1157 
1158     n = 0;
1159     XtSetArg(args[n], XmNvisibleItemCount, 8); ++n;
1160     XtSetArg(args[n], XmNresizable, True); ++n;
1161     XtSetArg(args[n], XmNlistSizePolicy, XmCONSTANT); ++n;
1162     XtSetArg(args[n], XmNvisualPolicy, XmVARIABLE); ++n;
1163 #ifdef LESSTIF_VERSION
1164     XtSetArg(args[n], XmNscrollBarDisplayPolicy, XmSTATIC); ++n;
1165 #endif
1166     data->list[SIZE] = XmCreateScrolledList(frame, "sizeList", args, n);
1167     XtVaSetValues(name, XmNuserData, data->list[SIZE], NULL);
1168 
1169     /* update form widgets cancel button */
1170     XtVaSetValues(form, XmNcancelButton, data->cancel, NULL);
1171 
1172     XtAddCallback(size_toggle, XmNvalueChangedCallback,
1173 	    (XtCallbackProc)stoggle_callback, (XtPointer)data);
1174     XtAddCallback(data->list[NAME], XmNbrowseSelectionCallback,
1175 	    (XtCallbackProc)name_callback, (XtPointer)data);
1176     XtAddCallback(data->list[STYLE], XmNbrowseSelectionCallback,
1177 	    (XtCallbackProc)style_callback, (XtPointer)data);
1178     XtAddCallback(data->list[SIZE], XmNbrowseSelectionCallback,
1179 	    (XtCallbackProc)size_callback, (XtPointer)data);
1180     XtAddCallback(data->ok, XmNactivateCallback,
1181 	    (XtCallbackProc)ok_callback, (XtPointer)data);
1182     XtAddCallback(data->cancel, XmNactivateCallback,
1183 	    (XtCallbackProc)cancel_callback, (XtPointer)data);
1184 
1185     XmProcessTraversal(data->list[NAME], XmTRAVERSE_CURRENT);
1186 
1187     /* setup tabgroups */
1188 
1189     XmAddTabGroup(data->list[NAME]);
1190     XmAddTabGroup(data->list[STYLE]);
1191     XmAddTabGroup(data->list[SIZE]);
1192     XmAddTabGroup(size_toggle);
1193     XmAddTabGroup(data->name);
1194     XmAddTabGroup(data->ok);
1195     XmAddTabGroup(data->cancel);
1196 
1197     add_cancel_action(data->dialog, (XtCallbackProc)cancel_callback, data);
1198 
1199     /* Preset selection data. */
1200 
1201     data->exit = False;
1202     data->in_pixels= True;
1203     data->sel[ENCODING] = NULL;
1204     data->sel[NAME] = NULL;
1205     data->sel[STYLE] = NULL;
1206     data->sel[SIZE] = NULL;
1207     data->font_name = NULL;
1208 
1209     /* set up current font parameters */
1210     if (current && current[0] != '\0')
1211     {
1212 	int	    i;
1213 	char	    **names;
1214 
1215 	names = XListFonts(XtDisplay(form), (char *) current, 1, &i);
1216 
1217 	if (i != 0)
1218 	{
1219 	    char namebuf[TEMP_BUF_SIZE];
1220 	    char stylebuf[TEMP_BUF_SIZE];
1221 	    char sizebuf[TEMP_BUF_SIZE];
1222 	    char encodingbuf[TEMP_BUF_SIZE];
1223 	    char *found;
1224 
1225 	    found = names[0];
1226 
1227 	    name_part(found, namebuf);
1228 	    style_part(found, stylebuf);
1229 	    size_part(found, sizebuf, data->in_pixels);
1230 	    encoding_part(found, encodingbuf);
1231 
1232 	    if (*namebuf != NUL
1233 		    && *stylebuf != NUL
1234 		    && *sizebuf != NUL
1235 		    && *encodingbuf != NUL)
1236 	    {
1237 		data->sel[NAME] = XtNewString(namebuf);
1238 		data->sel[STYLE] = XtNewString(stylebuf);
1239 		data->sel[SIZE] = XtNewString(sizebuf);
1240 		data->sel[ENCODING] = XtNewString(encodingbuf);
1241 		data->font_name = XtNewString(names[0]);
1242 		display_sample(data);
1243 		XmTextSetString(data->name, data->font_name);
1244 	    }
1245 	    else
1246 	    {
1247 		/* We can't preset a symbolic name, which isn't a full font
1248 		 * description. Therefore we just behave the same way as if the
1249 		 * user didn't have selected anything thus far.
1250 		 *
1251 		 * Unfortunately there is no known way to expand an abbreviated
1252 		 * font name.
1253 		 */
1254 
1255 		data->font_name = NULL;
1256 	    }
1257 	}
1258 	XFreeFontNames(names);
1259     }
1260 
1261     fill_lists(NONE, data);
1262 
1263     /* Unfortunately LessTif doesn't align the list widget's properly.  I don't
1264      * have currently any idea how to fix this problem.
1265      */
1266     XtManageChild(data->list[NAME]);
1267     XtManageChild(data->list[STYLE]);
1268     XtManageChild(data->list[SIZE]);
1269     XtManageChild(data->encoding_menu);
1270     manage_centered(form);
1271 
1272     /* modal event loop */
1273     while (!data->exit)
1274 	XtAppProcessEvent(XtWidgetToApplicationContext(data->dialog),
1275 							(XtInputMask)XtIMAll);
1276 
1277     if (data->old)
1278     {
1279 	XFreeFont(XtDisplay(data->dialog),  data->old);
1280 	XmFontListFree(data->old_list);
1281     }
1282     XtDestroyWidget(data->dialog);
1283 
1284     gui_motif_synch_fonts();
1285 
1286     return (char_u *) data->font_name;
1287 }
1288