Change the unifont API so that text is passed right down to the
[u/mdw/putty] / unix / gtkfont.c
1 /*
2 * Unified font management for GTK.
3 *
4 * PuTTY is willing to use both old-style X server-side bitmap
5 * fonts _and_ GTK2/Pango client-side fonts. This requires us to
6 * do a bit of work to wrap the two wildly different APIs into
7 * forms the rest of the code can switch between seamlessly, and
8 * also requires a custom font selector capable of handling both
9 * types of font.
10 */
11
12 #include <assert.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <gtk/gtk.h>
16 #include <gdk/gdkkeysyms.h>
17 #include <gdk/gdkx.h>
18 #include <X11/Xlib.h>
19 #include <X11/Xutil.h>
20 #include <X11/Xatom.h>
21
22 #include "putty.h"
23 #include "gtkfont.h"
24 #include "tree234.h"
25
26 /*
27 * Future work:
28 *
29 * - it would be nice to have a display of the current font name,
30 * and in particular whether it's client- or server-side,
31 * during the progress of the font selector.
32 *
33 * - it would be nice if we could move the processing of
34 * underline and VT100 double width into this module, so that
35 * instead of using the ghastly pixmap-stretching technique
36 * everywhere we could tell the Pango backend to scale its
37 * fonts to double size properly and at full resolution.
38 * However, this requires me to learn how to make Pango stretch
39 * text to an arbitrary aspect ratio (for double-width only
40 * text, which perversely is harder than DW+DH), and right now
41 * I haven't the energy.
42 */
43
44 /*
45 * Ad-hoc vtable mechanism to allow font structures to be
46 * polymorphic.
47 *
48 * Any instance of `unifont' used in the vtable functions will
49 * actually be the first element of a larger structure containing
50 * data specific to the subtype. This is permitted by the ISO C
51 * provision that one may safely cast between a pointer to a
52 * structure and a pointer to its first element.
53 */
54
55 #define FONTFLAG_CLIENTSIDE 0x0001
56 #define FONTFLAG_SERVERSIDE 0x0002
57 #define FONTFLAG_SERVERALIAS 0x0004
58 #define FONTFLAG_NONMONOSPACED 0x0008
59
60 #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
61
62 typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
63 const char *family, const char *charset,
64 const char *style, const char *stylekey,
65 int size, int flags,
66 const struct unifont_vtable *fontclass);
67
68 struct unifont_vtable {
69 /*
70 * `Methods' of the `class'.
71 */
72 unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
73 int shadowoffset, int shadowalways);
74 void (*destroy)(unifont *font);
75 void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
76 int x, int y, const wchar_t *string, int len, int wide,
77 int bold, int cellwidth);
78 void (*enum_fonts)(GtkWidget *widget,
79 fontsel_add_entry callback, void *callback_ctx);
80 char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
81 int *flags, int resolve_aliases);
82 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
83
84 /*
85 * `Static data members' of the `class'.
86 */
87 const char *prefix;
88 };
89
90 /* ----------------------------------------------------------------------
91 * X11 font implementation, directly using Xlib calls.
92 */
93
94 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
95 int x, int y, const wchar_t *string, int len,
96 int wide, int bold, int cellwidth);
97 static unifont *x11font_create(GtkWidget *widget, const char *name,
98 int wide, int bold,
99 int shadowoffset, int shadowalways);
100 static void x11font_destroy(unifont *font);
101 static void x11font_enum_fonts(GtkWidget *widget,
102 fontsel_add_entry callback, void *callback_ctx);
103 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
104 int *size, int *flags,
105 int resolve_aliases);
106 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
107 int size);
108
109 struct x11font {
110 struct unifont u;
111 /*
112 * Actual font objects. We store a number of these, for
113 * automatically guessed bold and wide variants.
114 *
115 * The parallel array `allocated' indicates whether we've
116 * tried to fetch a subfont already (thus distinguishing NULL
117 * because we haven't tried yet from NULL because we tried and
118 * failed, so that we don't keep trying and failing
119 * subsequently).
120 */
121 XFontStruct *fonts[4];
122 int allocated[4];
123 /*
124 * `sixteen_bit' is true iff the font object is indexed by
125 * values larger than a byte. That is, this flag tells us
126 * whether we use XDrawString or XDrawString16, etc.
127 */
128 int sixteen_bit;
129 /*
130 * `variable' is true iff the font is non-fixed-pitch. This
131 * enables some code which takes greater care over character
132 * positioning during text drawing.
133 */
134 int variable;
135 /*
136 * real_charset is the charset used when translating text into the
137 * font's internal encoding inside draw_text(). This need not be
138 * the same as the public_charset provided to the client; for
139 * example, public_charset might be CS_ISO8859_1 while
140 * real_charset is CS_ISO8859_1_X11.
141 */
142 int real_charset;
143 /*
144 * Data passed in to unifont_create().
145 */
146 int wide, bold, shadowoffset, shadowalways;
147 };
148
149 static const struct unifont_vtable x11font_vtable = {
150 x11font_create,
151 x11font_destroy,
152 x11font_draw_text,
153 x11font_enum_fonts,
154 x11font_canonify_fontname,
155 x11font_scale_fontname,
156 "server",
157 };
158
159 static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide)
160 {
161 Display *disp = GDK_DISPLAY();
162 Atom fontprop = XInternAtom(disp, "FONT", False);
163 unsigned long ret;
164 if (XGetFontProperty(xfs, fontprop, &ret)) {
165 char *name = XGetAtomName(disp, (Atom)ret);
166 if (name && name[0] == '-') {
167 char *strings[13];
168 char *dupname, *extrafree = NULL, *ret;
169 char *p, *q;
170 int nstr;
171
172 p = q = dupname = dupstr(name); /* skip initial minus */
173 nstr = 0;
174
175 while (*p && nstr < lenof(strings)) {
176 if (*p == '-') {
177 *p = '\0';
178 strings[nstr++] = p+1;
179 }
180 p++;
181 }
182
183 if (nstr < lenof(strings))
184 return NULL; /* XLFD was malformed */
185
186 if (bold)
187 strings[2] = "bold";
188
189 if (wide) {
190 /* 4 is `wideness', which obviously may have changed. */
191 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
192 strings[4] = strings[5] = "*";
193 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
194 }
195
196 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
197 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
198 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
199 "-", strings[ 9], "-", strings[10], "-", strings[11],
200 "-", strings[12], NULL);
201 sfree(extrafree);
202 sfree(dupname);
203
204 return ret;
205 }
206 }
207 return NULL;
208 }
209
210 static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
211 {
212 if (sixteen_bit) {
213 XChar2b space;
214 space.byte1 = 0;
215 space.byte2 = '0';
216 return XTextWidth16(xfs, &space, 1);
217 } else {
218 return XTextWidth(xfs, "0", 1);
219 }
220 }
221
222 static unifont *x11font_create(GtkWidget *widget, const char *name,
223 int wide, int bold,
224 int shadowoffset, int shadowalways)
225 {
226 struct x11font *xfont;
227 XFontStruct *xfs;
228 Display *disp = GDK_DISPLAY();
229 Atom charset_registry, charset_encoding, spacing;
230 unsigned long registry_ret, encoding_ret, spacing_ret;
231 int pubcs, realcs, sixteen_bit, variable;
232 int i;
233
234 xfs = XLoadQueryFont(disp, name);
235 if (!xfs)
236 return NULL;
237
238 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
239 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
240
241 pubcs = realcs = CS_NONE;
242 sixteen_bit = FALSE;
243 variable = TRUE;
244
245 if (XGetFontProperty(xfs, charset_registry, &registry_ret) &&
246 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
247 char *reg, *enc;
248 reg = XGetAtomName(disp, (Atom)registry_ret);
249 enc = XGetAtomName(disp, (Atom)encoding_ret);
250 if (reg && enc) {
251 char *encoding = dupcat(reg, "-", enc, NULL);
252 pubcs = realcs = charset_from_xenc(encoding);
253
254 /*
255 * iso10646-1 is the only wide font encoding we
256 * support. In this case, we expect clients to give us
257 * UTF-8, which this module must internally convert
258 * into 16-bit Unicode.
259 */
260 if (!strcasecmp(encoding, "iso10646-1")) {
261 sixteen_bit = TRUE;
262 pubcs = realcs = CS_UTF8;
263 }
264
265 /*
266 * Hack for X line-drawing characters: if the primary
267 * font is encoded as ISO-8859-1, and has valid glyphs
268 * in the first 32 char positions, it is assumed that
269 * those glyphs are the VT100 line-drawing character
270 * set.
271 *
272 * Actually, we'll hack even harder by only checking
273 * position 0x19 (vertical line, VT100 linedrawing
274 * `x'). Then we can check it easily by seeing if the
275 * ascent and descent differ.
276 */
277 if (pubcs == CS_ISO8859_1) {
278 int dir, asc, desc;
279 XCharStruct cs;
280 XChar2b text;
281
282 text.byte1 = '\0';
283 text.byte2 = '\x12';
284 XTextExtents16(xfs, &text, 1, &dir, &asc, &desc, &cs);
285 if (asc != desc)
286 realcs = CS_ISO8859_1_X11;
287 }
288
289 sfree(encoding);
290 }
291 }
292
293 spacing = XInternAtom(disp, "SPACING", False);
294 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
295 char *spc;
296 spc = XGetAtomName(disp, (Atom)spacing_ret);
297
298 if (spc && strchr("CcMm", spc[0]))
299 variable = FALSE;
300 }
301
302 xfont = snew(struct x11font);
303 xfont->u.vt = &x11font_vtable;
304 xfont->u.width = x11_font_width(xfs, sixteen_bit);
305 xfont->u.ascent = xfs->ascent;
306 xfont->u.descent = xfs->descent;
307 xfont->u.height = xfont->u.ascent + xfont->u.descent;
308 xfont->u.public_charset = pubcs;
309 xfont->real_charset = realcs;
310 xfont->fonts[0] = xfs;
311 xfont->allocated[0] = TRUE;
312 xfont->sixteen_bit = sixteen_bit;
313 xfont->variable = variable;
314 xfont->wide = wide;
315 xfont->bold = bold;
316 xfont->shadowoffset = shadowoffset;
317 xfont->shadowalways = shadowalways;
318
319 for (i = 1; i < lenof(xfont->fonts); i++) {
320 xfont->fonts[i] = NULL;
321 xfont->allocated[i] = FALSE;
322 }
323
324 return (unifont *)xfont;
325 }
326
327 static void x11font_destroy(unifont *font)
328 {
329 Display *disp = GDK_DISPLAY();
330 struct x11font *xfont = (struct x11font *)font;
331 int i;
332
333 for (i = 0; i < lenof(xfont->fonts); i++)
334 if (xfont->fonts[i])
335 XFreeFont(disp, xfont->fonts[i]);
336 sfree(font);
337 }
338
339 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
340 {
341 Display *disp = GDK_DISPLAY();
342 char *derived_name = x11_guess_derived_font_name
343 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
344 xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name);
345 xfont->allocated[sfid] = TRUE;
346 sfree(derived_name);
347 /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
348 }
349
350 #if !GTK_CHECK_VERSION(2,0,0)
351 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
352 #endif
353
354 static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs,
355 GC gc, int x, int y,
356 const XChar2b *string, int nchars,
357 int shadowoffset,
358 int fontvariable, int cellwidth)
359 {
360 Display *disp = GDK_DISPLAY();
361 int step, nsteps, centre;
362
363 if (fontvariable) {
364 /*
365 * In a variable-pitch font, we draw one character at a
366 * time, and centre it in the character cell.
367 */
368 step = 1;
369 nsteps = nchars;
370 centre = TRUE;
371 } else {
372 /*
373 * In a fixed-pitch font, we can draw the whole lot in one go.
374 */
375 step = nchars;
376 nsteps = 1;
377 centre = FALSE;
378 }
379
380 while (nsteps-- > 0) {
381 int X = x;
382 if (centre)
383 X += (cellwidth - XTextWidth16(xfs, string, step)) / 2;
384
385 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
386 X, y, string, step);
387 if (shadowoffset)
388 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
389 X + shadowoffset, y, string, step);
390
391 x += cellwidth;
392 string += step;
393 }
394 }
395
396 static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs,
397 GC gc, int x, int y,
398 const char *string, int nchars,
399 int shadowoffset,
400 int fontvariable, int cellwidth)
401 {
402 Display *disp = GDK_DISPLAY();
403 int step, nsteps, centre;
404
405 if (fontvariable) {
406 /*
407 * In a variable-pitch font, we draw one character at a
408 * time, and centre it in the character cell.
409 */
410 step = 1;
411 nsteps = nchars;
412 centre = TRUE;
413 } else {
414 /*
415 * In a fixed-pitch font, we can draw the whole lot in one go.
416 */
417 step = nchars;
418 nsteps = 1;
419 centre = FALSE;
420 }
421
422 while (nsteps-- > 0) {
423 int X = x;
424 if (centre)
425 X += (cellwidth - XTextWidth(xfs, string, step)) / 2;
426
427 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
428 X, y, string, step);
429 if (shadowoffset)
430 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
431 X + shadowoffset, y, string, step);
432
433 x += cellwidth;
434 string += step;
435 }
436 }
437
438 static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font,
439 int x, int y, const wchar_t *string, int len,
440 int wide, int bold, int cellwidth)
441 {
442 Display *disp = GDK_DISPLAY();
443 struct x11font *xfont = (struct x11font *)font;
444 GC gc = GDK_GC_XGC(gdkgc);
445 int sfid;
446 int shadowoffset = 0;
447 int mult = (wide ? 2 : 1);
448
449 wide -= xfont->wide;
450 bold -= xfont->bold;
451
452 /*
453 * Decide which subfont we're using, and whether we have to
454 * use shadow bold.
455 */
456 if (xfont->shadowalways && bold) {
457 shadowoffset = xfont->shadowoffset;
458 bold = 0;
459 }
460 sfid = 2 * wide + bold;
461 if (!xfont->allocated[sfid])
462 x11_alloc_subfont(xfont, sfid);
463 if (bold && !xfont->fonts[sfid]) {
464 bold = 0;
465 shadowoffset = xfont->shadowoffset;
466 sfid = 2 * wide + bold;
467 if (!xfont->allocated[sfid])
468 x11_alloc_subfont(xfont, sfid);
469 }
470
471 if (!xfont->fonts[sfid])
472 return; /* we've tried our best, but no luck */
473
474 XSetFont(disp, gc, xfont->fonts[sfid]->fid);
475
476 if (xfont->sixteen_bit) {
477 /*
478 * This X font has 16-bit character indices, which means
479 * we can directly use our Unicode input string.
480 */
481 XChar2b *xcs;
482 int i;
483
484 xcs = snewn(len, XChar2b);
485 for (i = 0; i < len; i++) {
486 xcs[i].byte1 = string[i] >> 8;
487 xcs[i].byte2 = string[i];
488 }
489
490 x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y,
491 xcs, len, shadowoffset,
492 xfont->variable, cellwidth * mult);
493 sfree(xcs);
494 } else {
495 /*
496 * This X font has 8-bit indices, so we must convert to the
497 * appropriate character set.
498 */
499 char *sbstring = snewn(len+1, char);
500 int sblen = wc_to_mb(xfont->real_charset, 0, string, len,
501 sbstring, len+1, ".", NULL, NULL);
502 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
503 sbstring, sblen, shadowoffset,
504 xfont->variable, cellwidth * mult);
505 sfree(sbstring);
506 }
507 }
508
509 static void x11font_enum_fonts(GtkWidget *widget,
510 fontsel_add_entry callback, void *callback_ctx)
511 {
512 char **fontnames;
513 char *tmp = NULL;
514 int nnames, i, max, tmpsize;
515
516 max = 32768;
517 while (1) {
518 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
519 if (nnames >= max) {
520 XFreeFontNames(fontnames);
521 max *= 2;
522 } else
523 break;
524 }
525
526 tmpsize = 0;
527
528 for (i = 0; i < nnames; i++) {
529 if (fontnames[i][0] == '-') {
530 /*
531 * Dismember an XLFD and convert it into the format
532 * we'll be using in the font selector.
533 */
534 char *components[14];
535 char *p, *font, *style, *stylekey, *charset;
536 int j, weightkey, slantkey, setwidthkey;
537 int thistmpsize, fontsize, flags;
538
539 thistmpsize = 4 * strlen(fontnames[i]) + 256;
540 if (tmpsize < thistmpsize) {
541 tmpsize = thistmpsize;
542 tmp = sresize(tmp, tmpsize, char);
543 }
544 strcpy(tmp, fontnames[i]);
545
546 p = tmp;
547 for (j = 0; j < 14; j++) {
548 if (*p)
549 *p++ = '\0';
550 components[j] = p;
551 while (*p && *p != '-')
552 p++;
553 }
554 *p++ = '\0';
555
556 /*
557 * Font name is made up of fields 0 and 1, in reverse
558 * order with parentheses. (This is what the GTK 1.2 X
559 * font selector does, and it seems to come out
560 * looking reasonably sensible.)
561 */
562 font = p;
563 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
564
565 /*
566 * Charset is made up of fields 12 and 13.
567 */
568 charset = p;
569 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
570
571 /*
572 * Style is a mixture of quite a lot of the fields,
573 * with some strange formatting.
574 */
575 style = p;
576 p += sprintf(p, "%s", components[2][0] ? components[2] :
577 "regular");
578 if (!g_strcasecmp(components[3], "i"))
579 p += sprintf(p, " italic");
580 else if (!g_strcasecmp(components[3], "o"))
581 p += sprintf(p, " oblique");
582 else if (!g_strcasecmp(components[3], "ri"))
583 p += sprintf(p, " reverse italic");
584 else if (!g_strcasecmp(components[3], "ro"))
585 p += sprintf(p, " reverse oblique");
586 else if (!g_strcasecmp(components[3], "ot"))
587 p += sprintf(p, " other-slant");
588 if (components[4][0] && g_strcasecmp(components[4], "normal"))
589 p += sprintf(p, " %s", components[4]);
590 if (!g_strcasecmp(components[10], "m"))
591 p += sprintf(p, " [M]");
592 if (!g_strcasecmp(components[10], "c"))
593 p += sprintf(p, " [C]");
594 if (components[5][0])
595 p += sprintf(p, " %s", components[5]);
596
597 /*
598 * Style key is the same stuff as above, but with a
599 * couple of transformations done on it to make it
600 * sort more sensibly.
601 */
602 p++;
603 stylekey = p;
604 if (!g_strcasecmp(components[2], "medium") ||
605 !g_strcasecmp(components[2], "regular") ||
606 !g_strcasecmp(components[2], "normal") ||
607 !g_strcasecmp(components[2], "book"))
608 weightkey = 0;
609 else if (!g_strncasecmp(components[2], "demi", 4) ||
610 !g_strncasecmp(components[2], "semi", 4))
611 weightkey = 1;
612 else
613 weightkey = 2;
614 if (!g_strcasecmp(components[3], "r"))
615 slantkey = 0;
616 else if (!g_strncasecmp(components[3], "r", 1))
617 slantkey = 2;
618 else
619 slantkey = 1;
620 if (!g_strcasecmp(components[4], "normal"))
621 setwidthkey = 0;
622 else
623 setwidthkey = 1;
624
625 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
626 weightkey,
627 (int)strlen(components[2]), components[2],
628 slantkey,
629 (int)strlen(components[3]), components[3],
630 setwidthkey,
631 (int)strlen(components[4]), components[4],
632 (int)strlen(components[10]), components[10],
633 (int)strlen(components[5]), components[5]);
634
635 assert(p - tmp < thistmpsize);
636
637 /*
638 * Size is in pixels, for our application, so we
639 * derive it directly from the pixel size field,
640 * number 6.
641 */
642 fontsize = atoi(components[6]);
643
644 /*
645 * Flags: we need to know whether this is a monospaced
646 * font, which we do by examining the spacing field
647 * again.
648 */
649 flags = FONTFLAG_SERVERSIDE;
650 if (!strchr("CcMm", components[10][0]))
651 flags |= FONTFLAG_NONMONOSPACED;
652
653 /*
654 * Not sure why, but sometimes the X server will
655 * deliver dummy font types in which fontsize comes
656 * out as zero. Filter those out.
657 */
658 if (fontsize)
659 callback(callback_ctx, fontnames[i], font, charset,
660 style, stylekey, fontsize, flags, &x11font_vtable);
661 } else {
662 /*
663 * This isn't an XLFD, so it must be an alias.
664 * Transmit it with mostly null data.
665 *
666 * It would be nice to work out if it's monospaced
667 * here, but at the moment I can't see that being
668 * anything but computationally hideous. Ah well.
669 */
670 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
671 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
672 }
673 }
674 XFreeFontNames(fontnames);
675 }
676
677 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
678 int *size, int *flags,
679 int resolve_aliases)
680 {
681 /*
682 * When given an X11 font name to try to make sense of for a
683 * font selector, we must attempt to load it (to see if it
684 * exists), and then canonify it by extracting its FONT
685 * property, which should give its full XLFD even if what we
686 * originally had was a wildcard.
687 *
688 * However, we must carefully avoid canonifying font
689 * _aliases_, unless specifically asked to, because the font
690 * selector treats them as worthwhile in their own right.
691 */
692 XFontStruct *xfs;
693 Display *disp = GDK_DISPLAY();
694 Atom fontprop, fontprop2;
695 unsigned long ret;
696
697 xfs = XLoadQueryFont(disp, name);
698
699 if (!xfs)
700 return NULL; /* didn't make sense to us, sorry */
701
702 fontprop = XInternAtom(disp, "FONT", False);
703
704 if (XGetFontProperty(xfs, fontprop, &ret)) {
705 char *newname = XGetAtomName(disp, (Atom)ret);
706 if (newname) {
707 unsigned long fsize = 12;
708
709 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
710 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
711 *size = fsize;
712 XFreeFont(disp, xfs);
713 if (flags) {
714 if (name[0] == '-' || resolve_aliases)
715 *flags = FONTFLAG_SERVERSIDE;
716 else
717 *flags = FONTFLAG_SERVERALIAS;
718 }
719 return dupstr(name[0] == '-' || resolve_aliases ?
720 newname : name);
721 }
722 }
723 }
724
725 XFreeFont(disp, xfs);
726
727 return NULL; /* something went wrong */
728 }
729
730 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
731 int size)
732 {
733 return NULL; /* shan't */
734 }
735
736 #if GTK_CHECK_VERSION(2,0,0)
737
738 /* ----------------------------------------------------------------------
739 * Pango font implementation (for GTK 2 only).
740 */
741
742 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
743 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
744 #endif
745
746 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
747 int x, int y, const wchar_t *string, int len,
748 int wide, int bold, int cellwidth);
749 static unifont *pangofont_create(GtkWidget *widget, const char *name,
750 int wide, int bold,
751 int shadowoffset, int shadowalways);
752 static void pangofont_destroy(unifont *font);
753 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
754 void *callback_ctx);
755 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
756 int *size, int *flags,
757 int resolve_aliases);
758 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
759 int size);
760
761 struct pangofont {
762 struct unifont u;
763 /*
764 * Pango objects.
765 */
766 PangoFontDescription *desc;
767 PangoFontset *fset;
768 /*
769 * The containing widget.
770 */
771 GtkWidget *widget;
772 /*
773 * Data passed in to unifont_create().
774 */
775 int bold, shadowoffset, shadowalways;
776 };
777
778 static const struct unifont_vtable pangofont_vtable = {
779 pangofont_create,
780 pangofont_destroy,
781 pangofont_draw_text,
782 pangofont_enum_fonts,
783 pangofont_canonify_fontname,
784 pangofont_scale_fontname,
785 "client",
786 };
787
788 /*
789 * This function is used to rigorously validate a
790 * PangoFontDescription. Later versions of Pango have a nasty
791 * habit of accepting _any_ old string as input to
792 * pango_font_description_from_string and returning a font
793 * description which can actually be used to display text, even if
794 * they have to do it by falling back to their most default font.
795 * This is doubtless helpful in some situations, but not here,
796 * because we need to know if a Pango font string actually _makes
797 * sense_ in order to fall back to treating it as an X font name
798 * if it doesn't. So we check that the font family is actually one
799 * supported by Pango.
800 */
801 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
802 PangoFontDescription *desc)
803 {
804 #ifndef PANGO_PRE_1POINT6
805 PangoFontMap *map;
806 #endif
807 PangoFontFamily **families;
808 int i, nfamilies, matched;
809
810 /*
811 * Ask Pango for a list of font families, and iterate through
812 * them to see if one of them matches the family in the
813 * PangoFontDescription.
814 */
815 #ifndef PANGO_PRE_1POINT6
816 map = pango_context_get_font_map(ctx);
817 if (!map)
818 return FALSE;
819 pango_font_map_list_families(map, &families, &nfamilies);
820 #else
821 pango_context_list_families(ctx, &families, &nfamilies);
822 #endif
823
824 matched = FALSE;
825 for (i = 0; i < nfamilies; i++) {
826 if (!g_strcasecmp(pango_font_family_get_name(families[i]),
827 pango_font_description_get_family(desc))) {
828 matched = TRUE;
829 break;
830 }
831 }
832 g_free(families);
833
834 return matched;
835 }
836
837 static unifont *pangofont_create(GtkWidget *widget, const char *name,
838 int wide, int bold,
839 int shadowoffset, int shadowalways)
840 {
841 struct pangofont *pfont;
842 PangoContext *ctx;
843 #ifndef PANGO_PRE_1POINT6
844 PangoFontMap *map;
845 #endif
846 PangoFontDescription *desc;
847 PangoFontset *fset;
848 PangoFontMetrics *metrics;
849
850 desc = pango_font_description_from_string(name);
851 if (!desc)
852 return NULL;
853 ctx = gtk_widget_get_pango_context(widget);
854 if (!ctx) {
855 pango_font_description_free(desc);
856 return NULL;
857 }
858 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
859 pango_font_description_free(desc);
860 return NULL;
861 }
862 #ifndef PANGO_PRE_1POINT6
863 map = pango_context_get_font_map(ctx);
864 if (!map) {
865 pango_font_description_free(desc);
866 return NULL;
867 }
868 fset = pango_font_map_load_fontset(map, ctx, desc,
869 pango_context_get_language(ctx));
870 #else
871 fset = pango_context_load_fontset(ctx, desc,
872 pango_context_get_language(ctx));
873 #endif
874 if (!fset) {
875 pango_font_description_free(desc);
876 return NULL;
877 }
878 metrics = pango_fontset_get_metrics(fset);
879 if (!metrics ||
880 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
881 pango_font_description_free(desc);
882 g_object_unref(fset);
883 return NULL;
884 }
885
886 pfont = snew(struct pangofont);
887 pfont->u.vt = &pangofont_vtable;
888 pfont->u.width =
889 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
890 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
891 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
892 pfont->u.height = pfont->u.ascent + pfont->u.descent;
893 /* The Pango API is hardwired to UTF-8 */
894 pfont->u.public_charset = CS_UTF8;
895 pfont->desc = desc;
896 pfont->fset = fset;
897 pfont->widget = widget;
898 pfont->bold = bold;
899 pfont->shadowoffset = shadowoffset;
900 pfont->shadowalways = shadowalways;
901
902 pango_font_metrics_unref(metrics);
903
904 return (unifont *)pfont;
905 }
906
907 static void pangofont_destroy(unifont *font)
908 {
909 struct pangofont *pfont = (struct pangofont *)font;
910 pango_font_description_free(pfont->desc);
911 g_object_unref(pfont->fset);
912 sfree(font);
913 }
914
915 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
916 int x, int y, const wchar_t *string, int len,
917 int wide, int bold, int cellwidth)
918 {
919 struct pangofont *pfont = (struct pangofont *)font;
920 PangoLayout *layout;
921 PangoRectangle rect;
922 char *utfstring, *utfptr;
923 int utflen;
924 int shadowbold = FALSE;
925
926 if (wide)
927 cellwidth *= 2;
928
929 y -= pfont->u.ascent;
930
931 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
932 pango_layout_set_font_description(layout, pfont->desc);
933 if (bold > pfont->bold) {
934 if (pfont->shadowalways)
935 shadowbold = TRUE;
936 else {
937 PangoFontDescription *desc2 =
938 pango_font_description_copy_static(pfont->desc);
939 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
940 pango_layout_set_font_description(layout, desc2);
941 }
942 }
943
944 /*
945 * Pango always expects UTF-8, so convert the input wide character
946 * string to UTF-8.
947 */
948 utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */
949 utflen = wc_to_mb(CS_UTF8, 0, string, len,
950 utfstring, len*6+1, ".", NULL, NULL);
951
952 utfptr = utfstring;
953 while (utflen > 0) {
954 int clen, n;
955
956 /*
957 * We want to display every character from this string in
958 * the centre of its own character cell. In the worst case,
959 * this requires a separate text-drawing call for each
960 * character; but in the common case where the font is
961 * properly fixed-width, we can draw many characters in one
962 * go which is much faster.
963 *
964 * This still isn't really ideal. If you look at what
965 * happens in the X protocol as a result of all of this, you
966 * find - naturally enough - that each call to
967 * gdk_draw_layout() generates a separate set of X RENDER
968 * operations involving creating a picture, setting a clip
969 * rectangle, doing some drawing and undoing the whole lot.
970 * In an ideal world, we should _always_ be able to turn the
971 * contents of this loop into a single RenderCompositeGlyphs
972 * operation which internally specifies inter-character
973 * deltas to get the spacing right, which would give us full
974 * speed _even_ in the worst case of a non-fixed-width font.
975 * However, Pango's architecture and documentation are so
976 * unhelpful that I have no idea how if at all to persuade
977 * them to do that.
978 */
979
980 /*
981 * Start by extracting a single UTF-8 character from the
982 * string.
983 */
984 clen = 1;
985 while (clen < utflen &&
986 (unsigned char)utfptr[clen] >= 0x80 &&
987 (unsigned char)utfptr[clen] < 0xC0)
988 clen++;
989 n = 1;
990
991 /*
992 * See if that character has the width we expect.
993 */
994 pango_layout_set_text(layout, utfptr, clen);
995 pango_layout_get_pixel_extents(layout, NULL, &rect);
996
997 if (rect.width == cellwidth) {
998 /*
999 * Try extracting more characters, for as long as they
1000 * stay well-behaved.
1001 */
1002 while (clen < utflen) {
1003 int oldclen = clen;
1004 clen++; /* skip UTF-8 introducer byte */
1005 while (clen < utflen &&
1006 (unsigned char)utfptr[clen] >= 0x80 &&
1007 (unsigned char)utfptr[clen] < 0xC0)
1008 clen++;
1009 n++;
1010 pango_layout_set_text(layout, utfptr, clen);
1011 pango_layout_get_pixel_extents(layout, NULL, &rect);
1012 if (rect.width != n * cellwidth) {
1013 clen = oldclen;
1014 n--;
1015 break;
1016 }
1017 }
1018 }
1019
1020 pango_layout_set_text(layout, utfptr, clen);
1021 pango_layout_get_pixel_extents(layout, NULL, &rect);
1022 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2,
1023 y + (pfont->u.height - rect.height)/2, layout);
1024 if (shadowbold)
1025 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
1026 y + (pfont->u.height - rect.height)/2, layout);
1027
1028 utflen -= clen;
1029 utfptr += clen;
1030 x += n * cellwidth;
1031 }
1032
1033 sfree(utfstring);
1034
1035 g_object_unref(layout);
1036 }
1037
1038 /*
1039 * Dummy size value to be used when converting a
1040 * PangoFontDescription of a scalable font to a string for
1041 * internal use.
1042 */
1043 #define PANGO_DUMMY_SIZE 12
1044
1045 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1046 void *callback_ctx)
1047 {
1048 PangoContext *ctx;
1049 #ifndef PANGO_PRE_1POINT6
1050 PangoFontMap *map;
1051 #endif
1052 PangoFontFamily **families;
1053 int i, nfamilies;
1054
1055 ctx = gtk_widget_get_pango_context(widget);
1056 if (!ctx)
1057 return;
1058
1059 /*
1060 * Ask Pango for a list of font families, and iterate through
1061 * them.
1062 */
1063 #ifndef PANGO_PRE_1POINT6
1064 map = pango_context_get_font_map(ctx);
1065 if (!map)
1066 return;
1067 pango_font_map_list_families(map, &families, &nfamilies);
1068 #else
1069 pango_context_list_families(ctx, &families, &nfamilies);
1070 #endif
1071 for (i = 0; i < nfamilies; i++) {
1072 PangoFontFamily *family = families[i];
1073 const char *familyname;
1074 int flags;
1075 PangoFontFace **faces;
1076 int j, nfaces;
1077
1078 /*
1079 * Set up our flags for this font family, and get the name
1080 * string.
1081 */
1082 flags = FONTFLAG_CLIENTSIDE;
1083 #ifndef PANGO_PRE_1POINT4
1084 /*
1085 * In very early versions of Pango, we can't tell
1086 * monospaced fonts from non-monospaced.
1087 */
1088 if (!pango_font_family_is_monospace(family))
1089 flags |= FONTFLAG_NONMONOSPACED;
1090 #endif
1091 familyname = pango_font_family_get_name(family);
1092
1093 /*
1094 * Go through the available font faces in this family.
1095 */
1096 pango_font_family_list_faces(family, &faces, &nfaces);
1097 for (j = 0; j < nfaces; j++) {
1098 PangoFontFace *face = faces[j];
1099 PangoFontDescription *desc;
1100 const char *facename;
1101 int *sizes;
1102 int k, nsizes, dummysize;
1103
1104 /*
1105 * Get the face name string.
1106 */
1107 facename = pango_font_face_get_face_name(face);
1108
1109 /*
1110 * Set up a font description with what we've got so
1111 * far. We'll fill in the size field manually and then
1112 * call pango_font_description_to_string() to give the
1113 * full real name of the specific font.
1114 */
1115 desc = pango_font_face_describe(face);
1116
1117 /*
1118 * See if this font has a list of specific sizes.
1119 */
1120 #ifndef PANGO_PRE_1POINT4
1121 pango_font_face_list_sizes(face, &sizes, &nsizes);
1122 #else
1123 /*
1124 * In early versions of Pango, that call wasn't
1125 * supported; we just have to assume everything is
1126 * scalable.
1127 */
1128 sizes = NULL;
1129 #endif
1130 if (!sizes) {
1131 /*
1132 * Write a single entry with a dummy size.
1133 */
1134 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1135 sizes = &dummysize;
1136 nsizes = 1;
1137 }
1138
1139 /*
1140 * If so, go through them one by one.
1141 */
1142 for (k = 0; k < nsizes; k++) {
1143 char *fullname;
1144 char stylekey[128];
1145
1146 pango_font_description_set_size(desc, sizes[k]);
1147
1148 fullname = pango_font_description_to_string(desc);
1149
1150 /*
1151 * Construct the sorting key for font styles.
1152 */
1153 {
1154 char *p = stylekey;
1155 int n;
1156
1157 n = pango_font_description_get_weight(desc);
1158 /* Weight: normal, then lighter, then bolder */
1159 if (n <= PANGO_WEIGHT_NORMAL)
1160 n = PANGO_WEIGHT_NORMAL - n;
1161 p += sprintf(p, "%4d", n);
1162
1163 n = pango_font_description_get_style(desc);
1164 p += sprintf(p, " %2d", n);
1165
1166 n = pango_font_description_get_stretch(desc);
1167 /* Stretch: closer to normal sorts earlier */
1168 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1169 (n < PANGO_STRETCH_NORMAL);
1170 p += sprintf(p, " %2d", n);
1171
1172 n = pango_font_description_get_variant(desc);
1173 p += sprintf(p, " %2d", n);
1174
1175 }
1176
1177 /*
1178 * Got everything. Hand off to the callback.
1179 * (The charset string is NULL, because only
1180 * server-side X fonts use it.)
1181 */
1182 callback(callback_ctx, fullname, familyname, NULL, facename,
1183 stylekey,
1184 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1185 flags, &pangofont_vtable);
1186
1187 g_free(fullname);
1188 }
1189 if (sizes != &dummysize)
1190 g_free(sizes);
1191
1192 pango_font_description_free(desc);
1193 }
1194 g_free(faces);
1195 }
1196 g_free(families);
1197 }
1198
1199 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1200 int *size, int *flags,
1201 int resolve_aliases)
1202 {
1203 /*
1204 * When given a Pango font name to try to make sense of for a
1205 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1206 * extract its original size (in pixels) into the `size' field.
1207 */
1208 PangoContext *ctx;
1209 #ifndef PANGO_PRE_1POINT6
1210 PangoFontMap *map;
1211 #endif
1212 PangoFontDescription *desc;
1213 PangoFontset *fset;
1214 PangoFontMetrics *metrics;
1215 char *newname, *retname;
1216
1217 desc = pango_font_description_from_string(name);
1218 if (!desc)
1219 return NULL;
1220 ctx = gtk_widget_get_pango_context(widget);
1221 if (!ctx) {
1222 pango_font_description_free(desc);
1223 return NULL;
1224 }
1225 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1226 pango_font_description_free(desc);
1227 return NULL;
1228 }
1229 #ifndef PANGO_PRE_1POINT6
1230 map = pango_context_get_font_map(ctx);
1231 if (!map) {
1232 pango_font_description_free(desc);
1233 return NULL;
1234 }
1235 fset = pango_font_map_load_fontset(map, ctx, desc,
1236 pango_context_get_language(ctx));
1237 #else
1238 fset = pango_context_load_fontset(ctx, desc,
1239 pango_context_get_language(ctx));
1240 #endif
1241 if (!fset) {
1242 pango_font_description_free(desc);
1243 return NULL;
1244 }
1245 metrics = pango_fontset_get_metrics(fset);
1246 if (!metrics ||
1247 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1248 pango_font_description_free(desc);
1249 g_object_unref(fset);
1250 return NULL;
1251 }
1252
1253 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1254 *flags = FONTFLAG_CLIENTSIDE;
1255 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1256 newname = pango_font_description_to_string(desc);
1257 retname = dupstr(newname);
1258 g_free(newname);
1259
1260 pango_font_metrics_unref(metrics);
1261 pango_font_description_free(desc);
1262 g_object_unref(fset);
1263
1264 return retname;
1265 }
1266
1267 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1268 int size)
1269 {
1270 PangoFontDescription *desc;
1271 char *newname, *retname;
1272
1273 desc = pango_font_description_from_string(name);
1274 if (!desc)
1275 return NULL;
1276 pango_font_description_set_size(desc, size * PANGO_SCALE);
1277 newname = pango_font_description_to_string(desc);
1278 retname = dupstr(newname);
1279 g_free(newname);
1280 pango_font_description_free(desc);
1281
1282 return retname;
1283 }
1284
1285 #endif /* GTK_CHECK_VERSION(2,0,0) */
1286
1287 /* ----------------------------------------------------------------------
1288 * Outermost functions which do the vtable dispatch.
1289 */
1290
1291 /*
1292 * Complete list of font-type subclasses. Listed in preference
1293 * order for unifont_create(). (That is, in the extremely unlikely
1294 * event that the same font name is valid as both a Pango and an
1295 * X11 font, it will be interpreted as the former in the absence
1296 * of an explicit type-disambiguating prefix.)
1297 */
1298 static const struct unifont_vtable *unifont_types[] = {
1299 #if GTK_CHECK_VERSION(2,0,0)
1300 &pangofont_vtable,
1301 #endif
1302 &x11font_vtable,
1303 };
1304
1305 /*
1306 * Function which takes a font name and processes the optional
1307 * scheme prefix. Returns the tail of the font name suitable for
1308 * passing to individual font scheme functions, and also provides
1309 * a subrange of the unifont_types[] array above.
1310 *
1311 * The return values `start' and `end' denote a half-open interval
1312 * in unifont_types[]; that is, the correct way to iterate over
1313 * them is
1314 *
1315 * for (i = start; i < end; i++) {...}
1316 */
1317 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1318 {
1319 int colonpos = strcspn(name, ":");
1320 int i;
1321
1322 if (name[colonpos]) {
1323 /*
1324 * There's a colon prefix on the font name. Use it to work
1325 * out which subclass to use.
1326 */
1327 for (i = 0; i < lenof(unifont_types); i++) {
1328 if (strlen(unifont_types[i]->prefix) == colonpos &&
1329 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1330 *start = i;
1331 *end = i+1;
1332 return name + colonpos + 1;
1333 }
1334 }
1335 /*
1336 * None matched, so return an empty scheme list to prevent
1337 * any scheme from being called at all.
1338 */
1339 *start = *end = 0;
1340 return name + colonpos + 1;
1341 } else {
1342 /*
1343 * No colon prefix, so just use all the subclasses.
1344 */
1345 *start = 0;
1346 *end = lenof(unifont_types);
1347 return name;
1348 }
1349 }
1350
1351 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1352 int bold, int shadowoffset, int shadowalways)
1353 {
1354 int i, start, end;
1355
1356 name = unifont_do_prefix(name, &start, &end);
1357
1358 for (i = start; i < end; i++) {
1359 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1360 shadowoffset, shadowalways);
1361 if (ret)
1362 return ret;
1363 }
1364 return NULL; /* font not found in any scheme */
1365 }
1366
1367 void unifont_destroy(unifont *font)
1368 {
1369 font->vt->destroy(font);
1370 }
1371
1372 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1373 int x, int y, const wchar_t *string, int len,
1374 int wide, int bold, int cellwidth)
1375 {
1376 font->vt->draw_text(target, gc, font, x, y, string, len,
1377 wide, bold, cellwidth);
1378 }
1379
1380 #if GTK_CHECK_VERSION(2,0,0)
1381
1382 /* ----------------------------------------------------------------------
1383 * Implementation of a unified font selector. Used on GTK 2 only;
1384 * for GTK 1 we still use the standard font selector.
1385 */
1386
1387 typedef struct fontinfo fontinfo;
1388
1389 typedef struct unifontsel_internal {
1390 /* This must be the structure's first element, for cross-casting */
1391 unifontsel u;
1392 GtkListStore *family_model, *style_model, *size_model;
1393 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1394 GtkWidget *filter_buttons[4];
1395 GtkWidget *preview_area;
1396 GdkPixmap *preview_pixmap;
1397 int preview_width, preview_height;
1398 GdkColor preview_fg, preview_bg;
1399 int filter_flags;
1400 tree234 *fonts_by_realname, *fonts_by_selorder;
1401 fontinfo *selected;
1402 int selsize, intendedsize;
1403 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1404 } unifontsel_internal;
1405
1406 /*
1407 * The structure held in the tree234s. All the string members are
1408 * part of the same allocated area, so don't need freeing
1409 * separately.
1410 */
1411 struct fontinfo {
1412 char *realname;
1413 char *family, *charset, *style, *stylekey;
1414 int size, flags;
1415 /*
1416 * Fallback sorting key, to permit multiple identical entries
1417 * to exist in the selorder tree.
1418 */
1419 int index;
1420 /*
1421 * Indices mapping fontinfo structures to indices in the list
1422 * boxes. sizeindex is irrelevant if the font is scalable
1423 * (size==0).
1424 */
1425 int familyindex, styleindex, sizeindex;
1426 /*
1427 * The class of font.
1428 */
1429 const struct unifont_vtable *fontclass;
1430 };
1431
1432 struct fontinfo_realname_find {
1433 const char *realname;
1434 int flags;
1435 };
1436
1437 static int strnullcasecmp(const char *a, const char *b)
1438 {
1439 int i;
1440
1441 /*
1442 * If exactly one of the inputs is NULL, it compares before
1443 * the other one.
1444 */
1445 if ((i = (!b) - (!a)) != 0)
1446 return i;
1447
1448 /*
1449 * NULL compares equal.
1450 */
1451 if (!a)
1452 return 0;
1453
1454 /*
1455 * Otherwise, ordinary strcasecmp.
1456 */
1457 return g_strcasecmp(a, b);
1458 }
1459
1460 static int fontinfo_realname_compare(void *av, void *bv)
1461 {
1462 fontinfo *a = (fontinfo *)av;
1463 fontinfo *b = (fontinfo *)bv;
1464 int i;
1465
1466 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1467 return i;
1468 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1469 return ((a->flags & FONTFLAG_SORT_MASK) <
1470 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1471 return 0;
1472 }
1473
1474 static int fontinfo_realname_find(void *av, void *bv)
1475 {
1476 struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
1477 fontinfo *b = (fontinfo *)bv;
1478 int i;
1479
1480 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1481 return i;
1482 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1483 return ((a->flags & FONTFLAG_SORT_MASK) <
1484 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1485 return 0;
1486 }
1487
1488 static int fontinfo_selorder_compare(void *av, void *bv)
1489 {
1490 fontinfo *a = (fontinfo *)av;
1491 fontinfo *b = (fontinfo *)bv;
1492 int i;
1493 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1494 return i;
1495 /*
1496 * Font class comes immediately after family, so that fonts
1497 * from different classes with the same family
1498 */
1499 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1500 return ((a->flags & FONTFLAG_SORT_MASK) <
1501 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1502 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1503 return i;
1504 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1505 return i;
1506 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1507 return i;
1508 if (a->size != b->size)
1509 return (a->size < b->size ? -1 : +1);
1510 if (a->index != b->index)
1511 return (a->index < b->index ? -1 : +1);
1512 return 0;
1513 }
1514
1515 static void unifontsel_deselect(unifontsel_internal *fs)
1516 {
1517 fs->selected = NULL;
1518 gtk_list_store_clear(fs->style_model);
1519 gtk_list_store_clear(fs->size_model);
1520 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
1521 gtk_widget_set_sensitive(fs->size_entry, FALSE);
1522 }
1523
1524 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1525 {
1526 GtkTreeIter iter;
1527 int i, listindex, minpos = -1, maxpos = -1;
1528 char *currfamily = NULL;
1529 int currflags = -1;
1530 fontinfo *info;
1531
1532 gtk_list_store_clear(fs->family_model);
1533 listindex = 0;
1534
1535 /*
1536 * Search through the font tree for anything matching our
1537 * current filter criteria. When we find one, add its font
1538 * name to the list box.
1539 */
1540 for (i = 0 ;; i++) {
1541 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1542 /*
1543 * info may be NULL if we've just run off the end of the
1544 * tree. We must still do a processing pass in that
1545 * situation, in case we had an unfinished font record in
1546 * progress.
1547 */
1548 if (info && (info->flags &~ fs->filter_flags)) {
1549 info->familyindex = -1;
1550 continue; /* we're filtering out this font */
1551 }
1552 if (!info || strnullcasecmp(currfamily, info->family) ||
1553 currflags != (info->flags & FONTFLAG_SORT_MASK)) {
1554 /*
1555 * We've either finished a family, or started a new
1556 * one, or both.
1557 */
1558 if (currfamily) {
1559 gtk_list_store_append(fs->family_model, &iter);
1560 gtk_list_store_set(fs->family_model, &iter,
1561 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1562 listindex++;
1563 }
1564 if (info) {
1565 minpos = i;
1566 currfamily = info->family;
1567 currflags = info->flags & FONTFLAG_SORT_MASK;
1568 }
1569 }
1570 if (!info)
1571 break; /* now we're done */
1572 info->familyindex = listindex;
1573 maxpos = i;
1574 }
1575
1576 /*
1577 * If we've just filtered out the previously selected font,
1578 * deselect it thoroughly.
1579 */
1580 if (fs->selected && fs->selected->familyindex < 0)
1581 unifontsel_deselect(fs);
1582 }
1583
1584 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1585 int start, int end)
1586 {
1587 GtkTreeIter iter;
1588 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1589 char *currcs = NULL, *currstyle = NULL;
1590 fontinfo *info;
1591
1592 gtk_list_store_clear(fs->style_model);
1593 listindex = 0;
1594 started = FALSE;
1595
1596 /*
1597 * Search through the font tree for anything matching our
1598 * current filter criteria. When we find one, add its charset
1599 * and/or style name to the list box.
1600 */
1601 for (i = start; i <= end; i++) {
1602 if (i == end)
1603 info = NULL;
1604 else
1605 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1606 /*
1607 * info may be NULL if we've just run off the end of the
1608 * relevant data. We must still do a processing pass in
1609 * that situation, in case we had an unfinished font
1610 * record in progress.
1611 */
1612 if (info && (info->flags &~ fs->filter_flags)) {
1613 info->styleindex = -1;
1614 continue; /* we're filtering out this font */
1615 }
1616 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1617 strnullcasecmp(currstyle, info->style)) {
1618 /*
1619 * We've either finished a style/charset, or started a
1620 * new one, or both.
1621 */
1622 started = TRUE;
1623 if (currstyle) {
1624 gtk_list_store_append(fs->style_model, &iter);
1625 gtk_list_store_set(fs->style_model, &iter,
1626 0, currstyle, 1, minpos, 2, maxpos+1,
1627 3, TRUE, -1);
1628 listindex++;
1629 }
1630 if (info) {
1631 minpos = i;
1632 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1633 gtk_list_store_append(fs->style_model, &iter);
1634 gtk_list_store_set(fs->style_model, &iter,
1635 0, info->charset, 1, -1, 2, -1,
1636 3, FALSE, -1);
1637 listindex++;
1638 }
1639 currcs = info->charset;
1640 currstyle = info->style;
1641 }
1642 }
1643 if (!info)
1644 break; /* now we're done */
1645 info->styleindex = listindex;
1646 maxpos = i;
1647 }
1648 }
1649
1650 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1651
1652 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1653 int start, int end)
1654 {
1655 GtkTreeIter iter;
1656 int i, listindex;
1657 char sizetext[40];
1658 fontinfo *info;
1659
1660 gtk_list_store_clear(fs->size_model);
1661 listindex = 0;
1662
1663 /*
1664 * Search through the font tree for anything matching our
1665 * current filter criteria. When we find one, add its font
1666 * name to the list box.
1667 */
1668 for (i = start; i < end; i++) {
1669 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1670 if (info->flags &~ fs->filter_flags) {
1671 info->sizeindex = -1;
1672 continue; /* we're filtering out this font */
1673 }
1674 if (info->size) {
1675 sprintf(sizetext, "%d", info->size);
1676 info->sizeindex = listindex;
1677 gtk_list_store_append(fs->size_model, &iter);
1678 gtk_list_store_set(fs->size_model, &iter,
1679 0, sizetext, 1, i, 2, info->size, -1);
1680 listindex++;
1681 } else {
1682 int j;
1683
1684 assert(i == start);
1685 assert(i+1 == end);
1686
1687 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1688 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1689 gtk_list_store_append(fs->size_model, &iter);
1690 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1691 2, unifontsel_default_sizes[j], -1);
1692 listindex++;
1693 }
1694 }
1695 }
1696 }
1697
1698 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
1699 {
1700 int i;
1701
1702 for (i = 0; i < lenof(fs->filter_buttons); i++) {
1703 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
1704 (GTK_OBJECT(fs->filter_buttons[i]),
1705 "user-data"));
1706 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
1707 !!(fs->filter_flags & flagbit));
1708 }
1709 }
1710
1711 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
1712 {
1713 unifont *font;
1714 char *sizename = NULL;
1715 fontinfo *info = fs->selected;
1716
1717 if (info) {
1718 sizename = info->fontclass->scale_fontname
1719 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
1720 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
1721 sizename ? sizename : info->realname,
1722 FALSE, FALSE, 0, 0);
1723 } else
1724 font = NULL;
1725
1726 if (fs->preview_pixmap) {
1727 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
1728 gdk_gc_set_foreground(gc, &fs->preview_bg);
1729 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
1730 fs->preview_width, fs->preview_height);
1731 gdk_gc_set_foreground(gc, &fs->preview_fg);
1732 if (font) {
1733 /*
1734 * The pangram used here is rather carefully
1735 * constructed: it contains a sequence of very narrow
1736 * letters (`jil') and a pair of adjacent very wide
1737 * letters (`wm').
1738 *
1739 * If the user selects a proportional font, it will be
1740 * coerced into fixed-width character cells when used
1741 * in the actual terminal window. We therefore display
1742 * it the same way in the preview pane, so as to show
1743 * it the way it will actually be displayed - and we
1744 * deliberately pick a pangram which will show the
1745 * resulting miskerning at its worst.
1746 *
1747 * We aren't trying to sell people these fonts; we're
1748 * trying to let them make an informed choice. Better
1749 * that they find out the problems with using
1750 * proportional fonts in terminal windows here than
1751 * that they go to the effort of selecting their font
1752 * and _then_ realise it was a mistake.
1753 */
1754 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1755 0, font->ascent,
1756 L"bankrupt jilted showmen quiz convex fogey",
1757 41, FALSE, FALSE, font->width);
1758 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1759 0, font->ascent + font->height,
1760 L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
1761 41, FALSE, FALSE, font->width);
1762 /*
1763 * The ordering of punctuation here is also selected
1764 * with some specific aims in mind. I put ` and '
1765 * together because some software (and people) still
1766 * use them as matched quotes no matter what Unicode
1767 * might say on the matter, so people can quickly
1768 * check whether they look silly in a candidate font.
1769 * The sequence #_@ is there to let people judge the
1770 * suitability of the underscore as an effectively
1771 * alphabetic character (since that's how it's often
1772 * used in practice, at least by programmers).
1773 */
1774 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1775 0, font->ascent + font->height * 2,
1776 L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
1777 42, FALSE, FALSE, font->width);
1778 }
1779 gdk_gc_unref(gc);
1780 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
1781 }
1782 if (font)
1783 info->fontclass->destroy(font);
1784
1785 sfree(sizename);
1786 }
1787
1788 static void unifontsel_select_font(unifontsel_internal *fs,
1789 fontinfo *info, int size, int leftlist,
1790 int size_is_explicit)
1791 {
1792 int index;
1793 int minval, maxval;
1794 GtkTreePath *treepath;
1795 GtkTreeIter iter;
1796
1797 fs->inhibit_response = TRUE;
1798
1799 fs->selected = info;
1800 fs->selsize = size;
1801 if (size_is_explicit)
1802 fs->intendedsize = size;
1803
1804 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
1805
1806 /*
1807 * Find the index of this fontinfo in the selorder list.
1808 */
1809 index = -1;
1810 findpos234(fs->fonts_by_selorder, info, NULL, &index);
1811 assert(index >= 0);
1812
1813 /*
1814 * Adjust the font selector flags and redo the font family
1815 * list box, if necessary.
1816 */
1817 if (leftlist <= 0 &&
1818 (fs->filter_flags | info->flags) != fs->filter_flags) {
1819 fs->filter_flags |= info->flags;
1820 unifontsel_set_filter_buttons(fs);
1821 unifontsel_setup_familylist(fs);
1822 }
1823
1824 /*
1825 * Find the appropriate family name and select it in the list.
1826 */
1827 assert(info->familyindex >= 0);
1828 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
1829 gtk_tree_selection_select_path
1830 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
1831 treepath);
1832 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
1833 treepath, NULL, FALSE, 0.0, 0.0);
1834 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
1835 gtk_tree_path_free(treepath);
1836
1837 /*
1838 * Now set up the font style list.
1839 */
1840 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
1841 1, &minval, 2, &maxval, -1);
1842 if (leftlist <= 1)
1843 unifontsel_setup_stylelist(fs, minval, maxval);
1844
1845 /*
1846 * Find the appropriate style name and select it in the list.
1847 */
1848 if (info->style) {
1849 assert(info->styleindex >= 0);
1850 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
1851 gtk_tree_selection_select_path
1852 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
1853 treepath);
1854 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
1855 treepath, NULL, FALSE, 0.0, 0.0);
1856 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
1857 &iter, treepath);
1858 gtk_tree_path_free(treepath);
1859
1860 /*
1861 * And set up the size list.
1862 */
1863 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
1864 1, &minval, 2, &maxval, -1);
1865 if (leftlist <= 2)
1866 unifontsel_setup_sizelist(fs, minval, maxval);
1867
1868 /*
1869 * Find the appropriate size, and select it in the list.
1870 */
1871 if (info->size) {
1872 assert(info->sizeindex >= 0);
1873 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
1874 gtk_tree_selection_select_path
1875 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
1876 treepath);
1877 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1878 treepath, NULL, FALSE, 0.0, 0.0);
1879 gtk_tree_path_free(treepath);
1880 size = info->size;
1881 } else {
1882 int j;
1883 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
1884 if (unifontsel_default_sizes[j] == size) {
1885 treepath = gtk_tree_path_new_from_indices(j, -1);
1886 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
1887 treepath, NULL, FALSE);
1888 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1889 treepath, NULL, FALSE, 0.0,
1890 0.0);
1891 gtk_tree_path_free(treepath);
1892 }
1893 }
1894
1895 /*
1896 * And set up the font size text entry box.
1897 */
1898 {
1899 char sizetext[40];
1900 sprintf(sizetext, "%d", size);
1901 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
1902 }
1903 } else {
1904 if (leftlist <= 2)
1905 unifontsel_setup_sizelist(fs, 0, 0);
1906 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
1907 }
1908
1909 /*
1910 * Grey out the font size edit box if we're not using a
1911 * scalable font.
1912 */
1913 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
1914 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
1915
1916 unifontsel_draw_preview_text(fs);
1917
1918 fs->inhibit_response = FALSE;
1919 }
1920
1921 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
1922 {
1923 unifontsel_internal *fs = (unifontsel_internal *)data;
1924 int newstate = gtk_toggle_button_get_active(tb);
1925 int newflags;
1926 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
1927 "user-data"));
1928
1929 if (newstate)
1930 newflags = fs->filter_flags | flagbit;
1931 else
1932 newflags = fs->filter_flags & ~flagbit;
1933
1934 if (fs->filter_flags != newflags) {
1935 fs->filter_flags = newflags;
1936 unifontsel_setup_familylist(fs);
1937 }
1938 }
1939
1940 static void unifontsel_add_entry(void *ctx, const char *realfontname,
1941 const char *family, const char *charset,
1942 const char *style, const char *stylekey,
1943 int size, int flags,
1944 const struct unifont_vtable *fontclass)
1945 {
1946 unifontsel_internal *fs = (unifontsel_internal *)ctx;
1947 fontinfo *info;
1948 int totalsize;
1949 char *p;
1950
1951 totalsize = sizeof(fontinfo) + strlen(realfontname) +
1952 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
1953 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
1954 info = (fontinfo *)smalloc(totalsize);
1955 info->fontclass = fontclass;
1956 p = (char *)info + sizeof(fontinfo);
1957 info->realname = p;
1958 strcpy(p, realfontname);
1959 p += 1+strlen(p);
1960 if (family) {
1961 info->family = p;
1962 strcpy(p, family);
1963 p += 1+strlen(p);
1964 } else
1965 info->family = NULL;
1966 if (charset) {
1967 info->charset = p;
1968 strcpy(p, charset);
1969 p += 1+strlen(p);
1970 } else
1971 info->charset = NULL;
1972 if (style) {
1973 info->style = p;
1974 strcpy(p, style);
1975 p += 1+strlen(p);
1976 } else
1977 info->style = NULL;
1978 if (stylekey) {
1979 info->stylekey = p;
1980 strcpy(p, stylekey);
1981 p += 1+strlen(p);
1982 } else
1983 info->stylekey = NULL;
1984 assert(p - (char *)info <= totalsize);
1985 info->size = size;
1986 info->flags = flags;
1987 info->index = count234(fs->fonts_by_selorder);
1988
1989 /*
1990 * It's just conceivable that a misbehaving font enumerator
1991 * might tell us about the same font real name more than once,
1992 * in which case we should silently drop the new one.
1993 */
1994 if (add234(fs->fonts_by_realname, info) != info) {
1995 sfree(info);
1996 return;
1997 }
1998 /*
1999 * However, we should never get a duplicate key in the
2000 * selorder tree, because the index field carefully
2001 * disambiguates otherwise identical records.
2002 */
2003 add234(fs->fonts_by_selorder, info);
2004 }
2005
2006 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
2007 fontinfo *info)
2008 {
2009 fontinfo info2, *below, *above;
2010 int pos;
2011
2012 /*
2013 * Copy the info structure. This doesn't copy its dynamic
2014 * string fields, but that's unimportant because all we're
2015 * going to do is to adjust the size field and use it in one
2016 * tree search.
2017 */
2018 info2 = *info;
2019 info2.size = fs->intendedsize;
2020
2021 /*
2022 * Search in the tree to find the fontinfo structure which
2023 * best approximates the size the user last requested.
2024 */
2025 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
2026 REL234_LE, &pos);
2027 above = index234(fs->fonts_by_selorder, pos+1);
2028
2029 /*
2030 * See if we've found it exactly, which is an easy special
2031 * case. If we have, it'll be in `below' and not `above',
2032 * because we did a REL234_LE rather than REL234_LT search.
2033 */
2034 if (!fontinfo_selorder_compare(&info2, below))
2035 return below;
2036
2037 /*
2038 * Now we've either found two suitable fonts, one smaller and
2039 * one larger, or we're at one or other extreme end of the
2040 * scale. Find out which, by NULLing out either of below and
2041 * above if it differs from this one in any respect but size
2042 * (and the disambiguating index field). Bear in mind, also,
2043 * that either one might _already_ be NULL if we're at the
2044 * extreme ends of the font list.
2045 */
2046 if (below) {
2047 info2.size = below->size;
2048 info2.index = below->index;
2049 if (fontinfo_selorder_compare(&info2, below))
2050 below = NULL;
2051 }
2052 if (above) {
2053 info2.size = above->size;
2054 info2.index = above->index;
2055 if (fontinfo_selorder_compare(&info2, above))
2056 above = NULL;
2057 }
2058
2059 /*
2060 * Now return whichever of above and below is non-NULL, if
2061 * that's unambiguous.
2062 */
2063 if (!above)
2064 return below;
2065 if (!below)
2066 return above;
2067
2068 /*
2069 * And now we really do have to make a choice about whether to
2070 * round up or down. We'll do it by rounding to nearest,
2071 * breaking ties by rounding up.
2072 */
2073 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
2074 return above;
2075 else
2076 return below;
2077 }
2078
2079 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
2080 {
2081 unifontsel_internal *fs = (unifontsel_internal *)data;
2082 GtkTreeModel *treemodel;
2083 GtkTreeIter treeiter;
2084 int minval;
2085 fontinfo *info;
2086
2087 if (fs->inhibit_response) /* we made this change ourselves */
2088 return;
2089
2090 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2091 return;
2092
2093 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2094 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2095 info = update_for_intended_size(fs, info);
2096 if (!info)
2097 return; /* _shouldn't_ happen unless font list is completely funted */
2098 if (!info->size)
2099 fs->selsize = fs->intendedsize; /* font is scalable */
2100 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2101 1, FALSE);
2102 }
2103
2104 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
2105 {
2106 unifontsel_internal *fs = (unifontsel_internal *)data;
2107 GtkTreeModel *treemodel;
2108 GtkTreeIter treeiter;
2109 int minval;
2110 fontinfo *info;
2111
2112 if (fs->inhibit_response) /* we made this change ourselves */
2113 return;
2114
2115 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2116 return;
2117
2118 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2119 if (minval < 0)
2120 return; /* somehow a charset heading got clicked */
2121 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2122 info = update_for_intended_size(fs, info);
2123 if (!info)
2124 return; /* _shouldn't_ happen unless font list is completely funted */
2125 if (!info->size)
2126 fs->selsize = fs->intendedsize; /* font is scalable */
2127 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2128 2, FALSE);
2129 }
2130
2131 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
2132 {
2133 unifontsel_internal *fs = (unifontsel_internal *)data;
2134 GtkTreeModel *treemodel;
2135 GtkTreeIter treeiter;
2136 int minval, size;
2137 fontinfo *info;
2138
2139 if (fs->inhibit_response) /* we made this change ourselves */
2140 return;
2141
2142 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2143 return;
2144
2145 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
2146 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2147 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
2148 }
2149
2150 static void size_entry_changed(GtkEditable *ed, gpointer data)
2151 {
2152 unifontsel_internal *fs = (unifontsel_internal *)data;
2153 const char *text;
2154 int size;
2155
2156 if (fs->inhibit_response) /* we made this change ourselves */
2157 return;
2158
2159 text = gtk_entry_get_text(GTK_ENTRY(ed));
2160 size = atoi(text);
2161
2162 if (size > 0) {
2163 assert(fs->selected->size == 0);
2164 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
2165 }
2166 }
2167
2168 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
2169 GtkTreeViewColumn *column, gpointer data)
2170 {
2171 unifontsel_internal *fs = (unifontsel_internal *)data;
2172 GtkTreeIter iter;
2173 int minval, newsize;
2174 fontinfo *info, *newinfo;
2175 char *newname;
2176
2177 if (fs->inhibit_response) /* we made this change ourselves */
2178 return;
2179
2180 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
2181 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
2182 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2183 if (info) {
2184 int flags;
2185 struct fontinfo_realname_find f;
2186
2187 newname = info->fontclass->canonify_fontname
2188 (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
2189
2190 f.realname = newname;
2191 f.flags = flags;
2192 newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2193
2194 sfree(newname);
2195 if (!newinfo)
2196 return; /* font name not in our index */
2197 if (newinfo == info)
2198 return; /* didn't change under canonification => not an alias */
2199 unifontsel_select_font(fs, newinfo,
2200 newinfo->size ? newinfo->size : newsize,
2201 1, TRUE);
2202 }
2203 }
2204
2205 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
2206 gpointer data)
2207 {
2208 unifontsel_internal *fs = (unifontsel_internal *)data;
2209
2210 if (fs->preview_pixmap) {
2211 gdk_draw_pixmap(widget->window,
2212 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
2213 fs->preview_pixmap,
2214 event->area.x, event->area.y,
2215 event->area.x, event->area.y,
2216 event->area.width, event->area.height);
2217 }
2218 return TRUE;
2219 }
2220
2221 static gint unifontsel_configure_area(GtkWidget *widget,
2222 GdkEventConfigure *event, gpointer data)
2223 {
2224 unifontsel_internal *fs = (unifontsel_internal *)data;
2225 int ox, oy, nx, ny, x, y;
2226
2227 /*
2228 * Enlarge the pixmap, but never shrink it.
2229 */
2230 ox = fs->preview_width;
2231 oy = fs->preview_height;
2232 x = event->width;
2233 y = event->height;
2234 if (x > ox || y > oy) {
2235 if (fs->preview_pixmap)
2236 gdk_pixmap_unref(fs->preview_pixmap);
2237
2238 nx = (x > ox ? x : ox);
2239 ny = (y > oy ? y : oy);
2240 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
2241 fs->preview_width = nx;
2242 fs->preview_height = ny;
2243
2244 unifontsel_draw_preview_text(fs);
2245 }
2246
2247 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2248
2249 return TRUE;
2250 }
2251
2252 unifontsel *unifontsel_new(const char *wintitle)
2253 {
2254 unifontsel_internal *fs = snew(unifontsel_internal);
2255 GtkWidget *table, *label, *w, *ww, *scroll;
2256 GtkListStore *model;
2257 GtkTreeViewColumn *column;
2258 int lists_height, preview_height, font_width, style_width, size_width;
2259 int i;
2260
2261 fs->inhibit_response = FALSE;
2262 fs->selected = NULL;
2263
2264 {
2265 /*
2266 * Invent some magic size constants.
2267 */
2268 GtkRequisition req;
2269 label = gtk_label_new("Quite Long Font Name (Foundry)");
2270 gtk_widget_size_request(label, &req);
2271 font_width = req.width;
2272 lists_height = 14 * req.height;
2273 preview_height = 5 * req.height;
2274 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2275 gtk_widget_size_request(label, &req);
2276 style_width = req.width;
2277 gtk_label_set_text(GTK_LABEL(label), "48000");
2278 gtk_widget_size_request(label, &req);
2279 size_width = req.width;
2280 #if GTK_CHECK_VERSION(2,10,0)
2281 g_object_ref_sink(label);
2282 g_object_unref(label);
2283 #else
2284 gtk_object_sink(GTK_OBJECT(label));
2285 #endif
2286 }
2287
2288 /*
2289 * Create the dialog box and initialise the user-visible
2290 * fields in the returned structure.
2291 */
2292 fs->u.user_data = NULL;
2293 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2294 gtk_window_set_title(fs->u.window, wintitle);
2295 fs->u.cancel_button = gtk_dialog_add_button
2296 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2297 fs->u.ok_button = gtk_dialog_add_button
2298 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2299 gtk_widget_grab_default(fs->u.ok_button);
2300
2301 /*
2302 * Now set up the internal fields, including in particular all
2303 * the controls that actually allow the user to select fonts.
2304 */
2305 table = gtk_table_new(8, 3, FALSE);
2306 gtk_widget_show(table);
2307 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2308 #if GTK_CHECK_VERSION(2,4,0)
2309 /* GtkAlignment seems to be the simplest way to put padding round things */
2310 w = gtk_alignment_new(0, 0, 1, 1);
2311 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2312 gtk_container_add(GTK_CONTAINER(w), table);
2313 gtk_widget_show(w);
2314 #else
2315 w = table;
2316 #endif
2317 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2318 w, TRUE, TRUE, 0);
2319
2320 label = gtk_label_new_with_mnemonic("_Font:");
2321 gtk_widget_show(label);
2322 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2323 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2324
2325 /*
2326 * The Font list box displays only a string, but additionally
2327 * stores two integers which give the limits within the
2328 * tree234 of the font entries covered by this list entry.
2329 */
2330 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2331 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2332 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2333 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2334 gtk_widget_show(w);
2335 column = gtk_tree_view_column_new_with_attributes
2336 ("Font", gtk_cell_renderer_text_new(),
2337 "text", 0, (char *)NULL);
2338 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2339 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2340 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2341 "changed", G_CALLBACK(family_changed), fs);
2342 g_signal_connect(G_OBJECT(w), "row-activated",
2343 G_CALLBACK(alias_resolve), fs);
2344
2345 scroll = gtk_scrolled_window_new(NULL, NULL);
2346 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2347 GTK_SHADOW_IN);
2348 gtk_container_add(GTK_CONTAINER(scroll), w);
2349 gtk_widget_show(scroll);
2350 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2351 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2352 gtk_widget_set_size_request(scroll, font_width, lists_height);
2353 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2354 GTK_EXPAND | GTK_FILL, 0, 0);
2355 fs->family_model = model;
2356 fs->family_list = w;
2357
2358 label = gtk_label_new_with_mnemonic("_Style:");
2359 gtk_widget_show(label);
2360 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2361 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2362
2363 /*
2364 * The Style list box can contain insensitive elements
2365 * (character set headings for server-side fonts), so we add
2366 * an extra column to the list store to hold that information.
2367 */
2368 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2369 G_TYPE_BOOLEAN);
2370 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2371 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2372 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2373 gtk_widget_show(w);
2374 column = gtk_tree_view_column_new_with_attributes
2375 ("Style", gtk_cell_renderer_text_new(),
2376 "text", 0, "sensitive", 3, (char *)NULL);
2377 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2378 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2379 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2380 "changed", G_CALLBACK(style_changed), fs);
2381
2382 scroll = gtk_scrolled_window_new(NULL, NULL);
2383 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2384 GTK_SHADOW_IN);
2385 gtk_container_add(GTK_CONTAINER(scroll), w);
2386 gtk_widget_show(scroll);
2387 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2388 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2389 gtk_widget_set_size_request(scroll, style_width, lists_height);
2390 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2391 GTK_EXPAND | GTK_FILL, 0, 0);
2392 fs->style_model = model;
2393 fs->style_list = w;
2394
2395 label = gtk_label_new_with_mnemonic("Si_ze:");
2396 gtk_widget_show(label);
2397 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2398 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2399
2400 /*
2401 * The Size label attaches primarily to a text input box so
2402 * that the user can select a size of their choice. The list
2403 * of available sizes is secondary.
2404 */
2405 fs->size_entry = w = gtk_entry_new();
2406 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2407 gtk_widget_set_size_request(w, size_width, -1);
2408 gtk_widget_show(w);
2409 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2410 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2411 fs);
2412
2413 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2414 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2415 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2416 gtk_widget_show(w);
2417 column = gtk_tree_view_column_new_with_attributes
2418 ("Size", gtk_cell_renderer_text_new(),
2419 "text", 0, (char *)NULL);
2420 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2421 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2422 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2423 "changed", G_CALLBACK(size_changed), fs);
2424
2425 scroll = gtk_scrolled_window_new(NULL, NULL);
2426 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2427 GTK_SHADOW_IN);
2428 gtk_container_add(GTK_CONTAINER(scroll), w);
2429 gtk_widget_show(scroll);
2430 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2431 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2432 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2433 GTK_EXPAND | GTK_FILL, 0, 0);
2434 fs->size_model = model;
2435 fs->size_list = w;
2436
2437 /*
2438 * Preview widget.
2439 */
2440 fs->preview_area = gtk_drawing_area_new();
2441 fs->preview_pixmap = NULL;
2442 fs->preview_width = 0;
2443 fs->preview_height = 0;
2444 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2445 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2446 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2447 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2448 FALSE, FALSE);
2449 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2450 FALSE, FALSE);
2451 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2452 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2453 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2454 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2455 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2456 gtk_widget_show(fs->preview_area);
2457 ww = fs->preview_area;
2458 w = gtk_frame_new(NULL);
2459 gtk_container_add(GTK_CONTAINER(w), ww);
2460 gtk_widget_show(w);
2461 #if GTK_CHECK_VERSION(2,4,0)
2462 ww = w;
2463 /* GtkAlignment seems to be the simplest way to put padding round things */
2464 w = gtk_alignment_new(0, 0, 1, 1);
2465 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2466 gtk_container_add(GTK_CONTAINER(w), ww);
2467 gtk_widget_show(w);
2468 #endif
2469 ww = w;
2470 w = gtk_frame_new("Preview of font");
2471 gtk_container_add(GTK_CONTAINER(w), ww);
2472 gtk_widget_show(w);
2473 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2474 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2475
2476 i = 0;
2477 w = gtk_check_button_new_with_label("Show client-side fonts");
2478 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2479 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2480 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2481 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2482 gtk_widget_show(w);
2483 fs->filter_buttons[i++] = w;
2484 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2485 w = gtk_check_button_new_with_label("Show server-side fonts");
2486 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2487 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2488 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2489 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2490 gtk_widget_show(w);
2491 fs->filter_buttons[i++] = w;
2492 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2493 w = gtk_check_button_new_with_label("Show server-side font aliases");
2494 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2495 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2496 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2497 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2498 gtk_widget_show(w);
2499 fs->filter_buttons[i++] = w;
2500 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2501 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2502 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2503 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2504 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2505 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2506 gtk_widget_show(w);
2507 fs->filter_buttons[i++] = w;
2508 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2509
2510 assert(i == lenof(fs->filter_buttons));
2511 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
2512 FONTFLAG_SERVERALIAS;
2513 unifontsel_set_filter_buttons(fs);
2514
2515 /*
2516 * Go and find all the font names, and set up our master font
2517 * list.
2518 */
2519 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2520 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2521 for (i = 0; i < lenof(unifont_types); i++)
2522 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2523 unifontsel_add_entry, fs);
2524
2525 /*
2526 * And set up the initial font names list.
2527 */
2528 unifontsel_setup_familylist(fs);
2529
2530 fs->selsize = fs->intendedsize = 13; /* random default */
2531 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2532
2533 return (unifontsel *)fs;
2534 }
2535
2536 void unifontsel_destroy(unifontsel *fontsel)
2537 {
2538 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2539 fontinfo *info;
2540
2541 if (fs->preview_pixmap)
2542 gdk_pixmap_unref(fs->preview_pixmap);
2543
2544 freetree234(fs->fonts_by_selorder);
2545 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2546 sfree(info);
2547 freetree234(fs->fonts_by_realname);
2548
2549 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2550 sfree(fs);
2551 }
2552
2553 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2554 {
2555 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2556 int i, start, end, size, flags;
2557 const char *fontname2 = NULL;
2558 fontinfo *info;
2559
2560 /*
2561 * Provide a default if given an empty or null font name.
2562 */
2563 if (!fontname || !*fontname)
2564 fontname = "server:fixed";
2565
2566 /*
2567 * Call the canonify_fontname function.
2568 */
2569 fontname = unifont_do_prefix(fontname, &start, &end);
2570 for (i = start; i < end; i++) {
2571 fontname2 = unifont_types[i]->canonify_fontname
2572 (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
2573 if (fontname2)
2574 break;
2575 }
2576 if (i == end)
2577 return; /* font name not recognised */
2578
2579 /*
2580 * Now look up the canonified font name in our index.
2581 */
2582 {
2583 struct fontinfo_realname_find f;
2584 f.realname = fontname2;
2585 f.flags = flags;
2586 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2587 }
2588
2589 /*
2590 * If we've found the font, and its size field is either
2591 * correct or zero (the latter indicating a scalable font),
2592 * then we're done. Otherwise, try looking up the original
2593 * font name instead.
2594 */
2595 if (!info || (info->size != size && info->size != 0)) {
2596 struct fontinfo_realname_find f;
2597 f.realname = fontname;
2598 f.flags = flags;
2599
2600 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2601 if (!info || info->size != size)
2602 return; /* font name not in our index */
2603 }
2604
2605 /*
2606 * Now we've got a fontinfo structure and a font size, so we
2607 * know everything we need to fill in all the fields in the
2608 * dialog.
2609 */
2610 unifontsel_select_font(fs, info, size, 0, TRUE);
2611 }
2612
2613 char *unifontsel_get_name(unifontsel *fontsel)
2614 {
2615 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2616 char *name;
2617
2618 if (!fs->selected)
2619 return NULL;
2620
2621 if (fs->selected->size == 0) {
2622 name = fs->selected->fontclass->scale_fontname
2623 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2624 if (name) {
2625 char *ret = dupcat(fs->selected->fontclass->prefix, ":",
2626 name, NULL);
2627 sfree(name);
2628 return ret;
2629 }
2630 }
2631
2632 return dupcat(fs->selected->fontclass->prefix, ":",
2633 fs->selected->realname, NULL);
2634 }
2635
2636 #endif /* GTK_CHECK_VERSION(2,0,0) */