2 * Unified font management for GTK.
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
16 #include <gdk/gdkkeysyms.h>
19 #include <X11/Xutil.h>
20 #include <X11/Xatom.h>
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.
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.
44 #if !GLIB_CHECK_VERSION(1,3,7)
45 #define g_ascii_strcasecmp g_strcasecmp
46 #define g_ascii_strncasecmp g_strncasecmp
50 * Ad-hoc vtable mechanism to allow font structures to be
53 * Any instance of `unifont' used in the vtable functions will
54 * actually be the first element of a larger structure containing
55 * data specific to the subtype. This is permitted by the ISO C
56 * provision that one may safely cast between a pointer to a
57 * structure and a pointer to its first element.
60 #define FONTFLAG_CLIENTSIDE 0x0001
61 #define FONTFLAG_SERVERSIDE 0x0002
62 #define FONTFLAG_SERVERALIAS 0x0004
63 #define FONTFLAG_NONMONOSPACED 0x0008
65 #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
67 typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
68 const char *family, const char *charset,
69 const char *style, const char *stylekey,
71 const struct unifont_vtable *fontclass);
73 struct unifont_vtable {
75 * `Methods' of the `class'.
77 unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
78 int shadowoffset, int shadowalways);
79 unifont *(*create_fallback)(GtkWidget *widget, int height, int wide,
80 int bold, int shadowoffset, int shadowalways);
81 void (*destroy)(unifont *font);
82 int (*has_glyph)(unifont *font, wchar_t glyph);
83 void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
84 int x, int y, const wchar_t *string, int len, int wide,
85 int bold, int cellwidth);
86 void (*enum_fonts)(GtkWidget *widget,
87 fontsel_add_entry callback, void *callback_ctx);
88 char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
89 int *flags, int resolve_aliases);
90 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
93 * `Static data members' of the `class'.
98 /* ----------------------------------------------------------------------
99 * X11 font implementation, directly using Xlib calls.
102 static int x11font_has_glyph(unifont *font, wchar_t glyph);
103 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
104 int x, int y, const wchar_t *string, int len,
105 int wide, int bold, int cellwidth);
106 static unifont *x11font_create(GtkWidget *widget, const char *name,
108 int shadowoffset, int shadowalways);
109 static void x11font_destroy(unifont *font);
110 static void x11font_enum_fonts(GtkWidget *widget,
111 fontsel_add_entry callback, void *callback_ctx);
112 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
113 int *size, int *flags,
114 int resolve_aliases);
115 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
121 * Actual font objects. We store a number of these, for
122 * automatically guessed bold and wide variants.
124 * The parallel array `allocated' indicates whether we've
125 * tried to fetch a subfont already (thus distinguishing NULL
126 * because we haven't tried yet from NULL because we tried and
127 * failed, so that we don't keep trying and failing
130 XFontStruct *fonts[4];
133 * `sixteen_bit' is true iff the font object is indexed by
134 * values larger than a byte. That is, this flag tells us
135 * whether we use XDrawString or XDrawString16, etc.
139 * `variable' is true iff the font is non-fixed-pitch. This
140 * enables some code which takes greater care over character
141 * positioning during text drawing.
145 * real_charset is the charset used when translating text into the
146 * font's internal encoding inside draw_text(). This need not be
147 * the same as the public_charset provided to the client; for
148 * example, public_charset might be CS_ISO8859_1 while
149 * real_charset is CS_ISO8859_1_X11.
153 * Data passed in to unifont_create().
155 int wide, bold, shadowoffset, shadowalways;
158 static const struct unifont_vtable x11font_vtable = {
160 NULL, /* no fallback fonts in X11 */
165 x11font_canonify_fontname,
166 x11font_scale_fontname,
170 static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide)
172 Display *disp = GDK_DISPLAY();
173 Atom fontprop = XInternAtom(disp, "FONT", False);
175 if (XGetFontProperty(xfs, fontprop, &ret)) {
176 char *name = XGetAtomName(disp, (Atom)ret);
177 if (name && name[0] == '-') {
179 char *dupname, *extrafree = NULL, *ret;
183 p = q = dupname = dupstr(name); /* skip initial minus */
186 while (*p && nstr < lenof(strings)) {
189 strings[nstr++] = p+1;
194 if (nstr < lenof(strings))
195 return NULL; /* XLFD was malformed */
201 /* 4 is `wideness', which obviously may have changed. */
202 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
203 strings[4] = strings[5] = "*";
204 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
207 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
208 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
209 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
210 "-", strings[ 9], "-", strings[10], "-", strings[11],
211 "-", strings[12], NULL);
221 static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
227 return XTextWidth16(xfs, &space, 1);
229 return XTextWidth(xfs, "0", 1);
233 static int x11_font_has_glyph(XFontStruct *xfs, int byte1, int byte2)
238 * Not to be confused with x11font_has_glyph, which is a method of
239 * the x11font 'class' and hence takes a unifont as argument. This
240 * is the low-level function which grubs about in an actual
241 * XFontStruct to see if a given glyph exists.
243 * We must do this ourselves rather than letting Xlib's
244 * XTextExtents16 do the job, because XTextExtents will helpfully
245 * substitute the font's default_char for any missing glyph and
246 * not tell us it did so, which precisely won't help us find out
247 * which glyphs _are_ missing.
249 * The man page for XQueryFont is rather confusing about how the
250 * per_char array in the XFontStruct is laid out, because it gives
251 * formulae for determining the two-byte X character code _from_
252 * an index into the per_char array. Going the other way, it's
255 * The valid character codes have byte1 between min_byte1 and
256 * max_byte1 inclusive, and byte2 between min_char_or_byte2 and
257 * max_char_or_byte2 inclusive. This gives a rectangle of size
258 * (max_byte2-min_byte1+1) by
259 * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the
260 * rectangle encoded in the per_char array. Hence, given a
261 * character code which is valid in the sense that it falls
262 * somewhere in that rectangle, its index in per_char is given by
265 * x = byte2 - min_char_or_byte2
266 * y = byte1 - min_byte1
267 * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x
269 * If min_byte1 and min_byte2 are both zero, that's a special case
270 * which can be treated as if min_byte2 was 1 instead, i.e. the
271 * per_char array just runs from min_char_or_byte2 to
272 * max_char_or_byte2 inclusive, and byte1 should always be zero.
275 if (byte2 < xfs->min_char_or_byte2 || byte2 > xfs->max_char_or_byte2)
278 if (xfs->min_byte1 == 0 && xfs->max_byte1 == 0) {
279 index = byte2 - xfs->min_char_or_byte2;
281 if (byte1 < xfs->min_byte1 || byte1 > xfs->max_byte1)
283 index = ((byte2 - xfs->min_char_or_byte2) +
284 ((byte1 - xfs->min_byte1) *
285 (xfs->max_char_or_byte2 - xfs->min_char_or_byte2 + 1)));
288 if (!xfs->per_char) /* per_char NULL => everything in range exists */
291 return (xfs->per_char[index].ascent + xfs->per_char[index].descent > 0 ||
292 xfs->per_char[index].width > 0);
295 static unifont *x11font_create(GtkWidget *widget, const char *name,
297 int shadowoffset, int shadowalways)
299 struct x11font *xfont;
301 Display *disp = GDK_DISPLAY();
302 Atom charset_registry, charset_encoding, spacing;
303 unsigned long registry_ret, encoding_ret, spacing_ret;
304 int pubcs, realcs, sixteen_bit, variable;
307 xfs = XLoadQueryFont(disp, name);
311 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
312 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
314 pubcs = realcs = CS_NONE;
318 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
319 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
321 reg = XGetAtomName(disp, (Atom)registry_ret);
322 enc = XGetAtomName(disp, (Atom)encoding_ret);
324 char *encoding = dupcat(reg, "-", enc, NULL);
325 pubcs = realcs = charset_from_xenc(encoding);
328 * iso10646-1 is the only wide font encoding we
329 * support. In this case, we expect clients to give us
330 * UTF-8, which this module must internally convert
331 * into 16-bit Unicode.
333 if (!strcasecmp(encoding, "iso10646-1")) {
335 pubcs = realcs = CS_UTF8;
339 * Hack for X line-drawing characters: if the primary font
340 * is encoded as ISO-8859-1, and has valid glyphs in the
341 * low character positions, it is assumed that those
342 * glyphs are the VT100 line-drawing character set.
344 if (pubcs == CS_ISO8859_1) {
346 for (ch = 1; ch < 32; ch++)
347 if (!x11_font_has_glyph(xfs, 0, ch))
350 realcs = CS_ISO8859_1_X11;
357 spacing = XInternAtom(disp, "SPACING", False);
358 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
360 spc = XGetAtomName(disp, (Atom)spacing_ret);
362 if (spc && strchr("CcMm", spc[0]))
366 xfont = snew(struct x11font);
367 xfont->u.vt = &x11font_vtable;
368 xfont->u.width = x11_font_width(xfs, sixteen_bit);
369 xfont->u.ascent = xfs->ascent;
370 xfont->u.descent = xfs->descent;
371 xfont->u.height = xfont->u.ascent + xfont->u.descent;
372 xfont->u.public_charset = pubcs;
373 xfont->u.want_fallback = TRUE;
374 xfont->real_charset = realcs;
375 xfont->fonts[0] = xfs;
376 xfont->allocated[0] = TRUE;
377 xfont->sixteen_bit = sixteen_bit;
378 xfont->variable = variable;
381 xfont->shadowoffset = shadowoffset;
382 xfont->shadowalways = shadowalways;
384 for (i = 1; i < lenof(xfont->fonts); i++) {
385 xfont->fonts[i] = NULL;
386 xfont->allocated[i] = FALSE;
389 return (unifont *)xfont;
392 static void x11font_destroy(unifont *font)
394 Display *disp = GDK_DISPLAY();
395 struct x11font *xfont = (struct x11font *)font;
398 for (i = 0; i < lenof(xfont->fonts); i++)
400 XFreeFont(disp, xfont->fonts[i]);
404 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
406 Display *disp = GDK_DISPLAY();
407 char *derived_name = x11_guess_derived_font_name
408 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
409 xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name);
410 xfont->allocated[sfid] = TRUE;
412 /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
415 static int x11font_has_glyph(unifont *font, wchar_t glyph)
417 struct x11font *xfont = (struct x11font *)font;
419 if (xfont->sixteen_bit) {
421 * This X font has 16-bit character indices, which means
422 * we can directly use our Unicode input value.
424 return x11_font_has_glyph(xfont->fonts[0], glyph >> 8, glyph & 0xFF);
427 * This X font has 8-bit indices, so we must convert to the
428 * appropriate character set.
431 int sblen = wc_to_mb(xfont->real_charset, 0, &glyph, 1,
432 sbstring, 2, "", NULL, NULL);
433 if (sblen == 0 || !sbstring[0])
434 return FALSE; /* not even in the charset */
436 return x11_font_has_glyph(xfont->fonts[0], 0,
437 (unsigned char)sbstring[0]);
441 #if !GTK_CHECK_VERSION(2,0,0)
442 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
445 static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs,
447 const XChar2b *string, int nchars,
449 int fontvariable, int cellwidth)
451 Display *disp = GDK_DISPLAY();
452 int step, nsteps, centre;
456 * In a variable-pitch font, we draw one character at a
457 * time, and centre it in the character cell.
464 * In a fixed-pitch font, we can draw the whole lot in one go.
471 while (nsteps-- > 0) {
474 X += (cellwidth - XTextWidth16(xfs, string, step)) / 2;
476 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
479 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
480 X + shadowoffset, y, string, step);
487 static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs,
489 const char *string, int nchars,
491 int fontvariable, int cellwidth)
493 Display *disp = GDK_DISPLAY();
494 int step, nsteps, centre;
498 * In a variable-pitch font, we draw one character at a
499 * time, and centre it in the character cell.
506 * In a fixed-pitch font, we can draw the whole lot in one go.
513 while (nsteps-- > 0) {
516 X += (cellwidth - XTextWidth(xfs, string, step)) / 2;
518 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
521 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
522 X + shadowoffset, y, string, step);
529 static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font,
530 int x, int y, const wchar_t *string, int len,
531 int wide, int bold, int cellwidth)
533 Display *disp = GDK_DISPLAY();
534 struct x11font *xfont = (struct x11font *)font;
535 GC gc = GDK_GC_XGC(gdkgc);
537 int shadowoffset = 0;
538 int mult = (wide ? 2 : 1);
544 * Decide which subfont we're using, and whether we have to
547 if (xfont->shadowalways && bold) {
548 shadowoffset = xfont->shadowoffset;
551 sfid = 2 * wide + bold;
552 if (!xfont->allocated[sfid])
553 x11_alloc_subfont(xfont, sfid);
554 if (bold && !xfont->fonts[sfid]) {
556 shadowoffset = xfont->shadowoffset;
557 sfid = 2 * wide + bold;
558 if (!xfont->allocated[sfid])
559 x11_alloc_subfont(xfont, sfid);
562 if (!xfont->fonts[sfid])
563 return; /* we've tried our best, but no luck */
565 XSetFont(disp, gc, xfont->fonts[sfid]->fid);
567 if (xfont->sixteen_bit) {
569 * This X font has 16-bit character indices, which means
570 * we can directly use our Unicode input string.
575 xcs = snewn(len, XChar2b);
576 for (i = 0; i < len; i++) {
577 xcs[i].byte1 = string[i] >> 8;
578 xcs[i].byte2 = string[i];
581 x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y,
582 xcs, len, shadowoffset,
583 xfont->variable, cellwidth * mult);
587 * This X font has 8-bit indices, so we must convert to the
588 * appropriate character set.
590 char *sbstring = snewn(len+1, char);
591 int sblen = wc_to_mb(xfont->real_charset, 0, string, len,
592 sbstring, len+1, ".", NULL, NULL);
593 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
594 sbstring, sblen, shadowoffset,
595 xfont->variable, cellwidth * mult);
600 static void x11font_enum_fonts(GtkWidget *widget,
601 fontsel_add_entry callback, void *callback_ctx)
605 int nnames, i, max, tmpsize;
609 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
611 XFreeFontNames(fontnames);
619 for (i = 0; i < nnames; i++) {
620 if (fontnames[i][0] == '-') {
622 * Dismember an XLFD and convert it into the format
623 * we'll be using in the font selector.
625 char *components[14];
626 char *p, *font, *style, *stylekey, *charset;
627 int j, weightkey, slantkey, setwidthkey;
628 int thistmpsize, fontsize, flags;
630 thistmpsize = 4 * strlen(fontnames[i]) + 256;
631 if (tmpsize < thistmpsize) {
632 tmpsize = thistmpsize;
633 tmp = sresize(tmp, tmpsize, char);
635 strcpy(tmp, fontnames[i]);
638 for (j = 0; j < 14; j++) {
642 while (*p && *p != '-')
648 * Font name is made up of fields 0 and 1, in reverse
649 * order with parentheses. (This is what the GTK 1.2 X
650 * font selector does, and it seems to come out
651 * looking reasonably sensible.)
654 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
657 * Charset is made up of fields 12 and 13.
660 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
663 * Style is a mixture of quite a lot of the fields,
664 * with some strange formatting.
667 p += sprintf(p, "%s", components[2][0] ? components[2] :
669 if (!g_ascii_strcasecmp(components[3], "i"))
670 p += sprintf(p, " italic");
671 else if (!g_ascii_strcasecmp(components[3], "o"))
672 p += sprintf(p, " oblique");
673 else if (!g_ascii_strcasecmp(components[3], "ri"))
674 p += sprintf(p, " reverse italic");
675 else if (!g_ascii_strcasecmp(components[3], "ro"))
676 p += sprintf(p, " reverse oblique");
677 else if (!g_ascii_strcasecmp(components[3], "ot"))
678 p += sprintf(p, " other-slant");
679 if (components[4][0] && g_ascii_strcasecmp(components[4], "normal"))
680 p += sprintf(p, " %s", components[4]);
681 if (!g_ascii_strcasecmp(components[10], "m"))
682 p += sprintf(p, " [M]");
683 if (!g_ascii_strcasecmp(components[10], "c"))
684 p += sprintf(p, " [C]");
685 if (components[5][0])
686 p += sprintf(p, " %s", components[5]);
689 * Style key is the same stuff as above, but with a
690 * couple of transformations done on it to make it
691 * sort more sensibly.
695 if (!g_ascii_strcasecmp(components[2], "medium") ||
696 !g_ascii_strcasecmp(components[2], "regular") ||
697 !g_ascii_strcasecmp(components[2], "normal") ||
698 !g_ascii_strcasecmp(components[2], "book"))
700 else if (!g_ascii_strncasecmp(components[2], "demi", 4) ||
701 !g_ascii_strncasecmp(components[2], "semi", 4))
705 if (!g_ascii_strcasecmp(components[3], "r"))
707 else if (!g_ascii_strncasecmp(components[3], "r", 1))
711 if (!g_ascii_strcasecmp(components[4], "normal"))
716 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
718 (int)strlen(components[2]), components[2],
720 (int)strlen(components[3]), components[3],
722 (int)strlen(components[4]), components[4],
723 (int)strlen(components[10]), components[10],
724 (int)strlen(components[5]), components[5]);
726 assert(p - tmp < thistmpsize);
729 * Size is in pixels, for our application, so we
730 * derive it directly from the pixel size field,
733 fontsize = atoi(components[6]);
736 * Flags: we need to know whether this is a monospaced
737 * font, which we do by examining the spacing field
740 flags = FONTFLAG_SERVERSIDE;
741 if (!strchr("CcMm", components[10][0]))
742 flags |= FONTFLAG_NONMONOSPACED;
745 * Not sure why, but sometimes the X server will
746 * deliver dummy font types in which fontsize comes
747 * out as zero. Filter those out.
750 callback(callback_ctx, fontnames[i], font, charset,
751 style, stylekey, fontsize, flags, &x11font_vtable);
754 * This isn't an XLFD, so it must be an alias.
755 * Transmit it with mostly null data.
757 * It would be nice to work out if it's monospaced
758 * here, but at the moment I can't see that being
759 * anything but computationally hideous. Ah well.
761 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
762 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
765 XFreeFontNames(fontnames);
768 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
769 int *size, int *flags,
773 * When given an X11 font name to try to make sense of for a
774 * font selector, we must attempt to load it (to see if it
775 * exists), and then canonify it by extracting its FONT
776 * property, which should give its full XLFD even if what we
777 * originally had was a wildcard.
779 * However, we must carefully avoid canonifying font
780 * _aliases_, unless specifically asked to, because the font
781 * selector treats them as worthwhile in their own right.
784 Display *disp = GDK_DISPLAY();
785 Atom fontprop, fontprop2;
788 xfs = XLoadQueryFont(disp, name);
791 return NULL; /* didn't make sense to us, sorry */
793 fontprop = XInternAtom(disp, "FONT", False);
795 if (XGetFontProperty(xfs, fontprop, &ret)) {
796 char *newname = XGetAtomName(disp, (Atom)ret);
798 unsigned long fsize = 12;
800 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
801 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
803 XFreeFont(disp, xfs);
805 if (name[0] == '-' || resolve_aliases)
806 *flags = FONTFLAG_SERVERSIDE;
808 *flags = FONTFLAG_SERVERALIAS;
810 return dupstr(name[0] == '-' || resolve_aliases ?
816 XFreeFont(disp, xfs);
818 return NULL; /* something went wrong */
821 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
824 return NULL; /* shan't */
827 #if GTK_CHECK_VERSION(2,0,0)
829 /* ----------------------------------------------------------------------
830 * Pango font implementation (for GTK 2 only).
833 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
834 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
837 static int pangofont_has_glyph(unifont *font, wchar_t glyph);
838 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
839 int x, int y, const wchar_t *string, int len,
840 int wide, int bold, int cellwidth);
841 static unifont *pangofont_create(GtkWidget *widget, const char *name,
843 int shadowoffset, int shadowalways);
844 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
846 int shadowoffset, int shadowalways);
847 static void pangofont_destroy(unifont *font);
848 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
850 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
851 int *size, int *flags,
852 int resolve_aliases);
853 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
861 PangoFontDescription *desc;
864 * The containing widget.
868 * Data passed in to unifont_create().
870 int bold, shadowoffset, shadowalways;
873 static const struct unifont_vtable pangofont_vtable = {
875 pangofont_create_fallback,
879 pangofont_enum_fonts,
880 pangofont_canonify_fontname,
881 pangofont_scale_fontname,
886 * This function is used to rigorously validate a
887 * PangoFontDescription. Later versions of Pango have a nasty
888 * habit of accepting _any_ old string as input to
889 * pango_font_description_from_string and returning a font
890 * description which can actually be used to display text, even if
891 * they have to do it by falling back to their most default font.
892 * This is doubtless helpful in some situations, but not here,
893 * because we need to know if a Pango font string actually _makes
894 * sense_ in order to fall back to treating it as an X font name
895 * if it doesn't. So we check that the font family is actually one
896 * supported by Pango.
898 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
899 PangoFontDescription *desc)
901 #ifndef PANGO_PRE_1POINT6
904 PangoFontFamily **families;
905 int i, nfamilies, matched;
908 * Ask Pango for a list of font families, and iterate through
909 * them to see if one of them matches the family in the
910 * PangoFontDescription.
912 #ifndef PANGO_PRE_1POINT6
913 map = pango_context_get_font_map(ctx);
916 pango_font_map_list_families(map, &families, &nfamilies);
918 pango_context_list_families(ctx, &families, &nfamilies);
922 for (i = 0; i < nfamilies; i++) {
923 if (!g_ascii_strcasecmp(pango_font_family_get_name(families[i]),
924 pango_font_description_get_family(desc))) {
934 static unifont *pangofont_create_internal(GtkWidget *widget,
936 PangoFontDescription *desc,
938 int shadowoffset, int shadowalways)
940 struct pangofont *pfont;
941 #ifndef PANGO_PRE_1POINT6
945 PangoFontMetrics *metrics;
947 #ifndef PANGO_PRE_1POINT6
948 map = pango_context_get_font_map(ctx);
950 pango_font_description_free(desc);
953 fset = pango_font_map_load_fontset(map, ctx, desc,
954 pango_context_get_language(ctx));
956 fset = pango_context_load_fontset(ctx, desc,
957 pango_context_get_language(ctx));
960 pango_font_description_free(desc);
963 metrics = pango_fontset_get_metrics(fset);
965 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
966 pango_font_description_free(desc);
967 g_object_unref(fset);
971 pfont = snew(struct pangofont);
972 pfont->u.vt = &pangofont_vtable;
974 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
975 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
976 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
977 pfont->u.height = pfont->u.ascent + pfont->u.descent;
978 pfont->u.want_fallback = FALSE;
979 /* The Pango API is hardwired to UTF-8 */
980 pfont->u.public_charset = CS_UTF8;
983 pfont->widget = widget;
985 pfont->shadowoffset = shadowoffset;
986 pfont->shadowalways = shadowalways;
988 pango_font_metrics_unref(metrics);
990 return (unifont *)pfont;
993 static unifont *pangofont_create(GtkWidget *widget, const char *name,
995 int shadowoffset, int shadowalways)
998 PangoFontDescription *desc;
1000 desc = pango_font_description_from_string(name);
1003 ctx = gtk_widget_get_pango_context(widget);
1005 pango_font_description_free(desc);
1008 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1009 pango_font_description_free(desc);
1012 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1013 shadowoffset, shadowalways);
1016 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
1018 int shadowoffset, int shadowalways)
1021 PangoFontDescription *desc;
1023 desc = pango_font_description_from_string("Monospace");
1026 ctx = gtk_widget_get_pango_context(widget);
1028 pango_font_description_free(desc);
1031 pango_font_description_set_absolute_size(desc, height * PANGO_SCALE);
1032 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1033 shadowoffset, shadowalways);
1036 static void pangofont_destroy(unifont *font)
1038 struct pangofont *pfont = (struct pangofont *)font;
1039 pango_font_description_free(pfont->desc);
1040 g_object_unref(pfont->fset);
1044 static int pangofont_has_glyph(unifont *font, wchar_t glyph)
1046 /* Pango implements font fallback, so assume it has everything */
1050 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1051 int x, int y, const wchar_t *string, int len,
1052 int wide, int bold, int cellwidth)
1054 struct pangofont *pfont = (struct pangofont *)font;
1055 PangoLayout *layout;
1056 PangoRectangle rect;
1057 char *utfstring, *utfptr;
1059 int shadowbold = FALSE;
1064 y -= pfont->u.ascent;
1066 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
1067 pango_layout_set_font_description(layout, pfont->desc);
1068 if (bold > pfont->bold) {
1069 if (pfont->shadowalways)
1072 PangoFontDescription *desc2 =
1073 pango_font_description_copy_static(pfont->desc);
1074 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
1075 pango_layout_set_font_description(layout, desc2);
1080 * Pango always expects UTF-8, so convert the input wide character
1083 utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */
1084 utflen = wc_to_mb(CS_UTF8, 0, string, len,
1085 utfstring, len*6+1, ".", NULL, NULL);
1088 while (utflen > 0) {
1092 * We want to display every character from this string in
1093 * the centre of its own character cell. In the worst case,
1094 * this requires a separate text-drawing call for each
1095 * character; but in the common case where the font is
1096 * properly fixed-width, we can draw many characters in one
1097 * go which is much faster.
1099 * This still isn't really ideal. If you look at what
1100 * happens in the X protocol as a result of all of this, you
1101 * find - naturally enough - that each call to
1102 * gdk_draw_layout() generates a separate set of X RENDER
1103 * operations involving creating a picture, setting a clip
1104 * rectangle, doing some drawing and undoing the whole lot.
1105 * In an ideal world, we should _always_ be able to turn the
1106 * contents of this loop into a single RenderCompositeGlyphs
1107 * operation which internally specifies inter-character
1108 * deltas to get the spacing right, which would give us full
1109 * speed _even_ in the worst case of a non-fixed-width font.
1110 * However, Pango's architecture and documentation are so
1111 * unhelpful that I have no idea how if at all to persuade
1116 * Start by extracting a single UTF-8 character from the
1120 while (clen < utflen &&
1121 (unsigned char)utfptr[clen] >= 0x80 &&
1122 (unsigned char)utfptr[clen] < 0xC0)
1127 * If it's a right-to-left character, we must display it on
1128 * its own, to stop Pango helpfully re-reversing our already
1131 if (!is_rtl(string[0])) {
1134 * See if that character has the width we expect.
1136 pango_layout_set_text(layout, utfptr, clen);
1137 pango_layout_get_pixel_extents(layout, NULL, &rect);
1139 if (rect.width == cellwidth) {
1141 * Try extracting more characters, for as long as they
1142 * stay well-behaved.
1144 while (clen < utflen) {
1146 clen++; /* skip UTF-8 introducer byte */
1147 while (clen < utflen &&
1148 (unsigned char)utfptr[clen] >= 0x80 &&
1149 (unsigned char)utfptr[clen] < 0xC0)
1152 pango_layout_set_text(layout, utfptr, clen);
1153 pango_layout_get_pixel_extents(layout, NULL, &rect);
1154 if (rect.width != n * cellwidth) {
1163 pango_layout_set_text(layout, utfptr, clen);
1164 pango_layout_get_pixel_extents(layout, NULL, &rect);
1165 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2,
1166 y + (pfont->u.height - rect.height)/2, layout);
1168 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
1169 y + (pfont->u.height - rect.height)/2, layout);
1179 g_object_unref(layout);
1183 * Dummy size value to be used when converting a
1184 * PangoFontDescription of a scalable font to a string for
1187 #define PANGO_DUMMY_SIZE 12
1189 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1193 #ifndef PANGO_PRE_1POINT6
1196 PangoFontFamily **families;
1199 ctx = gtk_widget_get_pango_context(widget);
1204 * Ask Pango for a list of font families, and iterate through
1207 #ifndef PANGO_PRE_1POINT6
1208 map = pango_context_get_font_map(ctx);
1211 pango_font_map_list_families(map, &families, &nfamilies);
1213 pango_context_list_families(ctx, &families, &nfamilies);
1215 for (i = 0; i < nfamilies; i++) {
1216 PangoFontFamily *family = families[i];
1217 const char *familyname;
1219 PangoFontFace **faces;
1223 * Set up our flags for this font family, and get the name
1226 flags = FONTFLAG_CLIENTSIDE;
1227 #ifndef PANGO_PRE_1POINT4
1229 * In very early versions of Pango, we can't tell
1230 * monospaced fonts from non-monospaced.
1232 if (!pango_font_family_is_monospace(family))
1233 flags |= FONTFLAG_NONMONOSPACED;
1235 familyname = pango_font_family_get_name(family);
1238 * Go through the available font faces in this family.
1240 pango_font_family_list_faces(family, &faces, &nfaces);
1241 for (j = 0; j < nfaces; j++) {
1242 PangoFontFace *face = faces[j];
1243 PangoFontDescription *desc;
1244 const char *facename;
1246 int k, nsizes, dummysize;
1249 * Get the face name string.
1251 facename = pango_font_face_get_face_name(face);
1254 * Set up a font description with what we've got so
1255 * far. We'll fill in the size field manually and then
1256 * call pango_font_description_to_string() to give the
1257 * full real name of the specific font.
1259 desc = pango_font_face_describe(face);
1262 * See if this font has a list of specific sizes.
1264 #ifndef PANGO_PRE_1POINT4
1265 pango_font_face_list_sizes(face, &sizes, &nsizes);
1268 * In early versions of Pango, that call wasn't
1269 * supported; we just have to assume everything is
1276 * Write a single entry with a dummy size.
1278 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1284 * If so, go through them one by one.
1286 for (k = 0; k < nsizes; k++) {
1290 pango_font_description_set_size(desc, sizes[k]);
1292 fullname = pango_font_description_to_string(desc);
1295 * Construct the sorting key for font styles.
1301 n = pango_font_description_get_weight(desc);
1302 /* Weight: normal, then lighter, then bolder */
1303 if (n <= PANGO_WEIGHT_NORMAL)
1304 n = PANGO_WEIGHT_NORMAL - n;
1305 p += sprintf(p, "%4d", n);
1307 n = pango_font_description_get_style(desc);
1308 p += sprintf(p, " %2d", n);
1310 n = pango_font_description_get_stretch(desc);
1311 /* Stretch: closer to normal sorts earlier */
1312 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1313 (n < PANGO_STRETCH_NORMAL);
1314 p += sprintf(p, " %2d", n);
1316 n = pango_font_description_get_variant(desc);
1317 p += sprintf(p, " %2d", n);
1322 * Got everything. Hand off to the callback.
1323 * (The charset string is NULL, because only
1324 * server-side X fonts use it.)
1326 callback(callback_ctx, fullname, familyname, NULL, facename,
1328 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1329 flags, &pangofont_vtable);
1333 if (sizes != &dummysize)
1336 pango_font_description_free(desc);
1343 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1344 int *size, int *flags,
1345 int resolve_aliases)
1348 * When given a Pango font name to try to make sense of for a
1349 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1350 * extract its original size (in pixels) into the `size' field.
1353 #ifndef PANGO_PRE_1POINT6
1356 PangoFontDescription *desc;
1358 PangoFontMetrics *metrics;
1359 char *newname, *retname;
1361 desc = pango_font_description_from_string(name);
1364 ctx = gtk_widget_get_pango_context(widget);
1366 pango_font_description_free(desc);
1369 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1370 pango_font_description_free(desc);
1373 #ifndef PANGO_PRE_1POINT6
1374 map = pango_context_get_font_map(ctx);
1376 pango_font_description_free(desc);
1379 fset = pango_font_map_load_fontset(map, ctx, desc,
1380 pango_context_get_language(ctx));
1382 fset = pango_context_load_fontset(ctx, desc,
1383 pango_context_get_language(ctx));
1386 pango_font_description_free(desc);
1389 metrics = pango_fontset_get_metrics(fset);
1391 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1392 pango_font_description_free(desc);
1393 g_object_unref(fset);
1397 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1398 *flags = FONTFLAG_CLIENTSIDE;
1399 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1400 newname = pango_font_description_to_string(desc);
1401 retname = dupstr(newname);
1404 pango_font_metrics_unref(metrics);
1405 pango_font_description_free(desc);
1406 g_object_unref(fset);
1411 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1414 PangoFontDescription *desc;
1415 char *newname, *retname;
1417 desc = pango_font_description_from_string(name);
1420 pango_font_description_set_size(desc, size * PANGO_SCALE);
1421 newname = pango_font_description_to_string(desc);
1422 retname = dupstr(newname);
1424 pango_font_description_free(desc);
1429 #endif /* GTK_CHECK_VERSION(2,0,0) */
1431 /* ----------------------------------------------------------------------
1432 * Outermost functions which do the vtable dispatch.
1436 * Complete list of font-type subclasses. Listed in preference
1437 * order for unifont_create(). (That is, in the extremely unlikely
1438 * event that the same font name is valid as both a Pango and an
1439 * X11 font, it will be interpreted as the former in the absence
1440 * of an explicit type-disambiguating prefix.)
1442 * The 'multifont' subclass is omitted here, as discussed above.
1444 static const struct unifont_vtable *unifont_types[] = {
1445 #if GTK_CHECK_VERSION(2,0,0)
1452 * Function which takes a font name and processes the optional
1453 * scheme prefix. Returns the tail of the font name suitable for
1454 * passing to individual font scheme functions, and also provides
1455 * a subrange of the unifont_types[] array above.
1457 * The return values `start' and `end' denote a half-open interval
1458 * in unifont_types[]; that is, the correct way to iterate over
1461 * for (i = start; i < end; i++) {...}
1463 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1465 int colonpos = strcspn(name, ":");
1468 if (name[colonpos]) {
1470 * There's a colon prefix on the font name. Use it to work
1471 * out which subclass to use.
1473 for (i = 0; i < lenof(unifont_types); i++) {
1474 if (strlen(unifont_types[i]->prefix) == colonpos &&
1475 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1478 return name + colonpos + 1;
1482 * None matched, so return an empty scheme list to prevent
1483 * any scheme from being called at all.
1486 return name + colonpos + 1;
1489 * No colon prefix, so just use all the subclasses.
1492 *end = lenof(unifont_types);
1497 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1498 int bold, int shadowoffset, int shadowalways)
1502 name = unifont_do_prefix(name, &start, &end);
1504 for (i = start; i < end; i++) {
1505 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1506 shadowoffset, shadowalways);
1510 return NULL; /* font not found in any scheme */
1513 void unifont_destroy(unifont *font)
1515 font->vt->destroy(font);
1518 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1519 int x, int y, const wchar_t *string, int len,
1520 int wide, int bold, int cellwidth)
1522 font->vt->draw_text(target, gc, font, x, y, string, len,
1523 wide, bold, cellwidth);
1526 /* ----------------------------------------------------------------------
1527 * Multiple-font wrapper. This is a type of unifont which encapsulates
1528 * up to two other unifonts, permitting missing glyphs in the main
1529 * font to be filled in by a fallback font.
1531 * This is a type of unifont just like the previous two, but it has a
1532 * separate constructor which is manually called by the client, so it
1533 * doesn't appear in the list of available font types enumerated by
1534 * unifont_create. This means it's not used by unifontsel either, so
1535 * it doesn't need to support any methods except draw_text and
1539 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1540 int x, int y, const wchar_t *string, int len,
1541 int wide, int bold, int cellwidth);
1542 static void multifont_destroy(unifont *font);
1550 static const struct unifont_vtable multifont_vtable = {
1551 NULL, /* creation is done specially */
1555 multifont_draw_text,
1562 unifont *multifont_create(GtkWidget *widget, const char *name,
1564 int shadowoffset, int shadowalways)
1567 unifont *font, *fallback;
1568 struct multifont *mfont;
1570 font = unifont_create(widget, name, wide, bold,
1571 shadowoffset, shadowalways);
1576 if (font->want_fallback) {
1577 for (i = 0; i < lenof(unifont_types); i++) {
1578 if (unifont_types[i]->create_fallback) {
1579 fallback = unifont_types[i]->create_fallback
1580 (widget, font->height, wide, bold,
1581 shadowoffset, shadowalways);
1589 * Construct our multifont. Public members are all copied from the
1590 * primary font we're wrapping.
1592 mfont = snew(struct multifont);
1593 mfont->u.vt = &multifont_vtable;
1594 mfont->u.width = font->width;
1595 mfont->u.ascent = font->ascent;
1596 mfont->u.descent = font->descent;
1597 mfont->u.height = font->height;
1598 mfont->u.public_charset = font->public_charset;
1599 mfont->u.want_fallback = FALSE; /* shouldn't be needed, but just in case */
1601 mfont->fallback = fallback;
1603 return (unifont *)mfont;
1606 static void multifont_destroy(unifont *font)
1608 struct multifont *mfont = (struct multifont *)font;
1609 unifont_destroy(mfont->main);
1610 if (mfont->fallback)
1611 unifont_destroy(mfont->fallback);
1615 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1616 int x, int y, const wchar_t *string, int len,
1617 int wide, int bold, int cellwidth)
1619 struct multifont *mfont = (struct multifont *)font;
1624 * Find a maximal sequence of characters which are, or are
1625 * not, supported by our main font.
1627 ok = mfont->main->vt->has_glyph(mfont->main, string[0]);
1630 !mfont->main->vt->has_glyph(mfont->main, string[i]) == !ok;
1636 unifont_draw_text(target, gc, ok ? mfont->main : mfont->fallback,
1637 x, y, string, i, wide, bold, cellwidth);
1644 #if GTK_CHECK_VERSION(2,0,0)
1646 /* ----------------------------------------------------------------------
1647 * Implementation of a unified font selector. Used on GTK 2 only;
1648 * for GTK 1 we still use the standard font selector.
1651 typedef struct fontinfo fontinfo;
1653 typedef struct unifontsel_internal {
1654 /* This must be the structure's first element, for cross-casting */
1656 GtkListStore *family_model, *style_model, *size_model;
1657 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1658 GtkWidget *filter_buttons[4];
1659 GtkWidget *preview_area;
1660 GdkPixmap *preview_pixmap;
1661 int preview_width, preview_height;
1662 GdkColor preview_fg, preview_bg;
1664 tree234 *fonts_by_realname, *fonts_by_selorder;
1666 int selsize, intendedsize;
1667 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1668 } unifontsel_internal;
1671 * The structure held in the tree234s. All the string members are
1672 * part of the same allocated area, so don't need freeing
1677 char *family, *charset, *style, *stylekey;
1680 * Fallback sorting key, to permit multiple identical entries
1681 * to exist in the selorder tree.
1685 * Indices mapping fontinfo structures to indices in the list
1686 * boxes. sizeindex is irrelevant if the font is scalable
1689 int familyindex, styleindex, sizeindex;
1691 * The class of font.
1693 const struct unifont_vtable *fontclass;
1696 struct fontinfo_realname_find {
1697 const char *realname;
1701 static int strnullcasecmp(const char *a, const char *b)
1706 * If exactly one of the inputs is NULL, it compares before
1709 if ((i = (!b) - (!a)) != 0)
1713 * NULL compares equal.
1719 * Otherwise, ordinary strcasecmp.
1721 return g_ascii_strcasecmp(a, b);
1724 static int fontinfo_realname_compare(void *av, void *bv)
1726 fontinfo *a = (fontinfo *)av;
1727 fontinfo *b = (fontinfo *)bv;
1730 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1732 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1733 return ((a->flags & FONTFLAG_SORT_MASK) <
1734 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1738 static int fontinfo_realname_find(void *av, void *bv)
1740 struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
1741 fontinfo *b = (fontinfo *)bv;
1744 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1746 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1747 return ((a->flags & FONTFLAG_SORT_MASK) <
1748 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1752 static int fontinfo_selorder_compare(void *av, void *bv)
1754 fontinfo *a = (fontinfo *)av;
1755 fontinfo *b = (fontinfo *)bv;
1757 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1760 * Font class comes immediately after family, so that fonts
1761 * from different classes with the same family
1763 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1764 return ((a->flags & FONTFLAG_SORT_MASK) <
1765 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1766 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1768 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1770 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1772 if (a->size != b->size)
1773 return (a->size < b->size ? -1 : +1);
1774 if (a->index != b->index)
1775 return (a->index < b->index ? -1 : +1);
1779 static void unifontsel_deselect(unifontsel_internal *fs)
1781 fs->selected = NULL;
1782 gtk_list_store_clear(fs->style_model);
1783 gtk_list_store_clear(fs->size_model);
1784 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
1785 gtk_widget_set_sensitive(fs->size_entry, FALSE);
1788 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1791 int i, listindex, minpos = -1, maxpos = -1;
1792 char *currfamily = NULL;
1796 gtk_list_store_clear(fs->family_model);
1800 * Search through the font tree for anything matching our
1801 * current filter criteria. When we find one, add its font
1802 * name to the list box.
1804 for (i = 0 ;; i++) {
1805 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1807 * info may be NULL if we've just run off the end of the
1808 * tree. We must still do a processing pass in that
1809 * situation, in case we had an unfinished font record in
1812 if (info && (info->flags &~ fs->filter_flags)) {
1813 info->familyindex = -1;
1814 continue; /* we're filtering out this font */
1816 if (!info || strnullcasecmp(currfamily, info->family) ||
1817 currflags != (info->flags & FONTFLAG_SORT_MASK)) {
1819 * We've either finished a family, or started a new
1823 gtk_list_store_append(fs->family_model, &iter);
1824 gtk_list_store_set(fs->family_model, &iter,
1825 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1830 currfamily = info->family;
1831 currflags = info->flags & FONTFLAG_SORT_MASK;
1835 break; /* now we're done */
1836 info->familyindex = listindex;
1841 * If we've just filtered out the previously selected font,
1842 * deselect it thoroughly.
1844 if (fs->selected && fs->selected->familyindex < 0)
1845 unifontsel_deselect(fs);
1848 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1852 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1853 char *currcs = NULL, *currstyle = NULL;
1856 gtk_list_store_clear(fs->style_model);
1861 * Search through the font tree for anything matching our
1862 * current filter criteria. When we find one, add its charset
1863 * and/or style name to the list box.
1865 for (i = start; i <= end; i++) {
1869 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1871 * info may be NULL if we've just run off the end of the
1872 * relevant data. We must still do a processing pass in
1873 * that situation, in case we had an unfinished font
1874 * record in progress.
1876 if (info && (info->flags &~ fs->filter_flags)) {
1877 info->styleindex = -1;
1878 continue; /* we're filtering out this font */
1880 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1881 strnullcasecmp(currstyle, info->style)) {
1883 * We've either finished a style/charset, or started a
1888 gtk_list_store_append(fs->style_model, &iter);
1889 gtk_list_store_set(fs->style_model, &iter,
1890 0, currstyle, 1, minpos, 2, maxpos+1,
1896 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1897 gtk_list_store_append(fs->style_model, &iter);
1898 gtk_list_store_set(fs->style_model, &iter,
1899 0, info->charset, 1, -1, 2, -1,
1903 currcs = info->charset;
1904 currstyle = info->style;
1908 break; /* now we're done */
1909 info->styleindex = listindex;
1914 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1916 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1924 gtk_list_store_clear(fs->size_model);
1928 * Search through the font tree for anything matching our
1929 * current filter criteria. When we find one, add its font
1930 * name to the list box.
1932 for (i = start; i < end; i++) {
1933 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1934 if (info->flags &~ fs->filter_flags) {
1935 info->sizeindex = -1;
1936 continue; /* we're filtering out this font */
1939 sprintf(sizetext, "%d", info->size);
1940 info->sizeindex = listindex;
1941 gtk_list_store_append(fs->size_model, &iter);
1942 gtk_list_store_set(fs->size_model, &iter,
1943 0, sizetext, 1, i, 2, info->size, -1);
1951 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1952 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1953 gtk_list_store_append(fs->size_model, &iter);
1954 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1955 2, unifontsel_default_sizes[j], -1);
1962 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
1966 for (i = 0; i < lenof(fs->filter_buttons); i++) {
1967 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
1968 (GTK_OBJECT(fs->filter_buttons[i]),
1970 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
1971 !!(fs->filter_flags & flagbit));
1975 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
1978 char *sizename = NULL;
1979 fontinfo *info = fs->selected;
1982 sizename = info->fontclass->scale_fontname
1983 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
1984 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
1985 sizename ? sizename : info->realname,
1986 FALSE, FALSE, 0, 0);
1990 if (fs->preview_pixmap) {
1991 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
1992 gdk_gc_set_foreground(gc, &fs->preview_bg);
1993 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
1994 fs->preview_width, fs->preview_height);
1995 gdk_gc_set_foreground(gc, &fs->preview_fg);
1998 * The pangram used here is rather carefully
1999 * constructed: it contains a sequence of very narrow
2000 * letters (`jil') and a pair of adjacent very wide
2003 * If the user selects a proportional font, it will be
2004 * coerced into fixed-width character cells when used
2005 * in the actual terminal window. We therefore display
2006 * it the same way in the preview pane, so as to show
2007 * it the way it will actually be displayed - and we
2008 * deliberately pick a pangram which will show the
2009 * resulting miskerning at its worst.
2011 * We aren't trying to sell people these fonts; we're
2012 * trying to let them make an informed choice. Better
2013 * that they find out the problems with using
2014 * proportional fonts in terminal windows here than
2015 * that they go to the effort of selecting their font
2016 * and _then_ realise it was a mistake.
2018 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2020 L"bankrupt jilted showmen quiz convex fogey",
2021 41, FALSE, FALSE, font->width);
2022 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2023 0, font->ascent + font->height,
2024 L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
2025 41, FALSE, FALSE, font->width);
2027 * The ordering of punctuation here is also selected
2028 * with some specific aims in mind. I put ` and '
2029 * together because some software (and people) still
2030 * use them as matched quotes no matter what Unicode
2031 * might say on the matter, so people can quickly
2032 * check whether they look silly in a candidate font.
2033 * The sequence #_@ is there to let people judge the
2034 * suitability of the underscore as an effectively
2035 * alphabetic character (since that's how it's often
2036 * used in practice, at least by programmers).
2038 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2039 0, font->ascent + font->height * 2,
2040 L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
2041 42, FALSE, FALSE, font->width);
2044 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
2047 info->fontclass->destroy(font);
2052 static void unifontsel_select_font(unifontsel_internal *fs,
2053 fontinfo *info, int size, int leftlist,
2054 int size_is_explicit)
2058 GtkTreePath *treepath;
2061 fs->inhibit_response = TRUE;
2063 fs->selected = info;
2065 if (size_is_explicit)
2066 fs->intendedsize = size;
2068 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
2071 * Find the index of this fontinfo in the selorder list.
2074 findpos234(fs->fonts_by_selorder, info, NULL, &index);
2078 * Adjust the font selector flags and redo the font family
2079 * list box, if necessary.
2081 if (leftlist <= 0 &&
2082 (fs->filter_flags | info->flags) != fs->filter_flags) {
2083 fs->filter_flags |= info->flags;
2084 unifontsel_set_filter_buttons(fs);
2085 unifontsel_setup_familylist(fs);
2089 * Find the appropriate family name and select it in the list.
2091 assert(info->familyindex >= 0);
2092 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
2093 gtk_tree_selection_select_path
2094 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
2096 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
2097 treepath, NULL, FALSE, 0.0, 0.0);
2098 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
2099 gtk_tree_path_free(treepath);
2102 * Now set up the font style list.
2104 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
2105 1, &minval, 2, &maxval, -1);
2107 unifontsel_setup_stylelist(fs, minval, maxval);
2110 * Find the appropriate style name and select it in the list.
2113 assert(info->styleindex >= 0);
2114 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
2115 gtk_tree_selection_select_path
2116 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
2118 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
2119 treepath, NULL, FALSE, 0.0, 0.0);
2120 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
2122 gtk_tree_path_free(treepath);
2125 * And set up the size list.
2127 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
2128 1, &minval, 2, &maxval, -1);
2130 unifontsel_setup_sizelist(fs, minval, maxval);
2133 * Find the appropriate size, and select it in the list.
2136 assert(info->sizeindex >= 0);
2137 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
2138 gtk_tree_selection_select_path
2139 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
2141 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2142 treepath, NULL, FALSE, 0.0, 0.0);
2143 gtk_tree_path_free(treepath);
2147 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
2148 if (unifontsel_default_sizes[j] == size) {
2149 treepath = gtk_tree_path_new_from_indices(j, -1);
2150 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
2151 treepath, NULL, FALSE);
2152 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2153 treepath, NULL, FALSE, 0.0,
2155 gtk_tree_path_free(treepath);
2160 * And set up the font size text entry box.
2164 sprintf(sizetext, "%d", size);
2165 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
2169 unifontsel_setup_sizelist(fs, 0, 0);
2170 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
2174 * Grey out the font size edit box if we're not using a
2177 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
2178 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
2180 unifontsel_draw_preview_text(fs);
2182 fs->inhibit_response = FALSE;
2185 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
2187 unifontsel_internal *fs = (unifontsel_internal *)data;
2188 int newstate = gtk_toggle_button_get_active(tb);
2190 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
2194 newflags = fs->filter_flags | flagbit;
2196 newflags = fs->filter_flags & ~flagbit;
2198 if (fs->filter_flags != newflags) {
2199 fs->filter_flags = newflags;
2200 unifontsel_setup_familylist(fs);
2204 static void unifontsel_add_entry(void *ctx, const char *realfontname,
2205 const char *family, const char *charset,
2206 const char *style, const char *stylekey,
2207 int size, int flags,
2208 const struct unifont_vtable *fontclass)
2210 unifontsel_internal *fs = (unifontsel_internal *)ctx;
2215 totalsize = sizeof(fontinfo) + strlen(realfontname) +
2216 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
2217 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
2218 info = (fontinfo *)smalloc(totalsize);
2219 info->fontclass = fontclass;
2220 p = (char *)info + sizeof(fontinfo);
2222 strcpy(p, realfontname);
2229 info->family = NULL;
2235 info->charset = NULL;
2244 strcpy(p, stylekey);
2247 info->stylekey = NULL;
2248 assert(p - (char *)info <= totalsize);
2250 info->flags = flags;
2251 info->index = count234(fs->fonts_by_selorder);
2254 * It's just conceivable that a misbehaving font enumerator
2255 * might tell us about the same font real name more than once,
2256 * in which case we should silently drop the new one.
2258 if (add234(fs->fonts_by_realname, info) != info) {
2263 * However, we should never get a duplicate key in the
2264 * selorder tree, because the index field carefully
2265 * disambiguates otherwise identical records.
2267 add234(fs->fonts_by_selorder, info);
2270 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
2273 fontinfo info2, *below, *above;
2277 * Copy the info structure. This doesn't copy its dynamic
2278 * string fields, but that's unimportant because all we're
2279 * going to do is to adjust the size field and use it in one
2283 info2.size = fs->intendedsize;
2286 * Search in the tree to find the fontinfo structure which
2287 * best approximates the size the user last requested.
2289 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
2293 above = index234(fs->fonts_by_selorder, pos+1);
2296 * See if we've found it exactly, which is an easy special
2297 * case. If we have, it'll be in `below' and not `above',
2298 * because we did a REL234_LE rather than REL234_LT search.
2300 if (below && !fontinfo_selorder_compare(&info2, below))
2304 * Now we've either found two suitable fonts, one smaller and
2305 * one larger, or we're at one or other extreme end of the
2306 * scale. Find out which, by NULLing out either of below and
2307 * above if it differs from this one in any respect but size
2308 * (and the disambiguating index field). Bear in mind, also,
2309 * that either one might _already_ be NULL if we're at the
2310 * extreme ends of the font list.
2313 info2.size = below->size;
2314 info2.index = below->index;
2315 if (fontinfo_selorder_compare(&info2, below))
2319 info2.size = above->size;
2320 info2.index = above->index;
2321 if (fontinfo_selorder_compare(&info2, above))
2326 * Now return whichever of above and below is non-NULL, if
2327 * that's unambiguous.
2335 * And now we really do have to make a choice about whether to
2336 * round up or down. We'll do it by rounding to nearest,
2337 * breaking ties by rounding up.
2339 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
2345 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
2347 unifontsel_internal *fs = (unifontsel_internal *)data;
2348 GtkTreeModel *treemodel;
2349 GtkTreeIter treeiter;
2353 if (fs->inhibit_response) /* we made this change ourselves */
2356 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2359 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2360 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2361 info = update_for_intended_size(fs, info);
2363 return; /* _shouldn't_ happen unless font list is completely funted */
2365 fs->selsize = fs->intendedsize; /* font is scalable */
2366 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2370 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
2372 unifontsel_internal *fs = (unifontsel_internal *)data;
2373 GtkTreeModel *treemodel;
2374 GtkTreeIter treeiter;
2378 if (fs->inhibit_response) /* we made this change ourselves */
2381 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2384 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2386 return; /* somehow a charset heading got clicked */
2387 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2388 info = update_for_intended_size(fs, info);
2390 return; /* _shouldn't_ happen unless font list is completely funted */
2392 fs->selsize = fs->intendedsize; /* font is scalable */
2393 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2397 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
2399 unifontsel_internal *fs = (unifontsel_internal *)data;
2400 GtkTreeModel *treemodel;
2401 GtkTreeIter treeiter;
2405 if (fs->inhibit_response) /* we made this change ourselves */
2408 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2411 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
2412 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2413 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
2416 static void size_entry_changed(GtkEditable *ed, gpointer data)
2418 unifontsel_internal *fs = (unifontsel_internal *)data;
2422 if (fs->inhibit_response) /* we made this change ourselves */
2425 text = gtk_entry_get_text(GTK_ENTRY(ed));
2429 assert(fs->selected->size == 0);
2430 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
2434 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
2435 GtkTreeViewColumn *column, gpointer data)
2437 unifontsel_internal *fs = (unifontsel_internal *)data;
2439 int minval, newsize;
2440 fontinfo *info, *newinfo;
2443 if (fs->inhibit_response) /* we made this change ourselves */
2446 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
2447 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
2448 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2451 struct fontinfo_realname_find f;
2453 newname = info->fontclass->canonify_fontname
2454 (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
2456 f.realname = newname;
2458 newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2462 return; /* font name not in our index */
2463 if (newinfo == info)
2464 return; /* didn't change under canonification => not an alias */
2465 unifontsel_select_font(fs, newinfo,
2466 newinfo->size ? newinfo->size : newsize,
2471 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
2474 unifontsel_internal *fs = (unifontsel_internal *)data;
2476 if (fs->preview_pixmap) {
2477 gdk_draw_pixmap(widget->window,
2478 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
2480 event->area.x, event->area.y,
2481 event->area.x, event->area.y,
2482 event->area.width, event->area.height);
2487 static gint unifontsel_configure_area(GtkWidget *widget,
2488 GdkEventConfigure *event, gpointer data)
2490 unifontsel_internal *fs = (unifontsel_internal *)data;
2491 int ox, oy, nx, ny, x, y;
2494 * Enlarge the pixmap, but never shrink it.
2496 ox = fs->preview_width;
2497 oy = fs->preview_height;
2500 if (x > ox || y > oy) {
2501 if (fs->preview_pixmap)
2502 gdk_pixmap_unref(fs->preview_pixmap);
2504 nx = (x > ox ? x : ox);
2505 ny = (y > oy ? y : oy);
2506 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
2507 fs->preview_width = nx;
2508 fs->preview_height = ny;
2510 unifontsel_draw_preview_text(fs);
2513 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2518 unifontsel *unifontsel_new(const char *wintitle)
2520 unifontsel_internal *fs = snew(unifontsel_internal);
2521 GtkWidget *table, *label, *w, *ww, *scroll;
2522 GtkListStore *model;
2523 GtkTreeViewColumn *column;
2524 int lists_height, preview_height, font_width, style_width, size_width;
2527 fs->inhibit_response = FALSE;
2528 fs->selected = NULL;
2532 * Invent some magic size constants.
2535 label = gtk_label_new("Quite Long Font Name (Foundry)");
2536 gtk_widget_size_request(label, &req);
2537 font_width = req.width;
2538 lists_height = 14 * req.height;
2539 preview_height = 5 * req.height;
2540 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2541 gtk_widget_size_request(label, &req);
2542 style_width = req.width;
2543 gtk_label_set_text(GTK_LABEL(label), "48000");
2544 gtk_widget_size_request(label, &req);
2545 size_width = req.width;
2546 #if GTK_CHECK_VERSION(2,10,0)
2547 g_object_ref_sink(label);
2548 g_object_unref(label);
2550 gtk_object_sink(GTK_OBJECT(label));
2555 * Create the dialog box and initialise the user-visible
2556 * fields in the returned structure.
2558 fs->u.user_data = NULL;
2559 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2560 gtk_window_set_title(fs->u.window, wintitle);
2561 fs->u.cancel_button = gtk_dialog_add_button
2562 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2563 fs->u.ok_button = gtk_dialog_add_button
2564 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2565 gtk_widget_grab_default(fs->u.ok_button);
2568 * Now set up the internal fields, including in particular all
2569 * the controls that actually allow the user to select fonts.
2571 table = gtk_table_new(8, 3, FALSE);
2572 gtk_widget_show(table);
2573 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2574 #if GTK_CHECK_VERSION(2,4,0)
2575 /* GtkAlignment seems to be the simplest way to put padding round things */
2576 w = gtk_alignment_new(0, 0, 1, 1);
2577 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2578 gtk_container_add(GTK_CONTAINER(w), table);
2583 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2586 label = gtk_label_new_with_mnemonic("_Font:");
2587 gtk_widget_show(label);
2588 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2589 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2592 * The Font list box displays only a string, but additionally
2593 * stores two integers which give the limits within the
2594 * tree234 of the font entries covered by this list entry.
2596 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2597 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2598 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2599 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2601 column = gtk_tree_view_column_new_with_attributes
2602 ("Font", gtk_cell_renderer_text_new(),
2603 "text", 0, (char *)NULL);
2604 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2605 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2606 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2607 "changed", G_CALLBACK(family_changed), fs);
2608 g_signal_connect(G_OBJECT(w), "row-activated",
2609 G_CALLBACK(alias_resolve), fs);
2611 scroll = gtk_scrolled_window_new(NULL, NULL);
2612 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2614 gtk_container_add(GTK_CONTAINER(scroll), w);
2615 gtk_widget_show(scroll);
2616 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2617 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2618 gtk_widget_set_size_request(scroll, font_width, lists_height);
2619 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2620 GTK_EXPAND | GTK_FILL, 0, 0);
2621 fs->family_model = model;
2622 fs->family_list = w;
2624 label = gtk_label_new_with_mnemonic("_Style:");
2625 gtk_widget_show(label);
2626 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2627 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2630 * The Style list box can contain insensitive elements
2631 * (character set headings for server-side fonts), so we add
2632 * an extra column to the list store to hold that information.
2634 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2636 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2637 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2638 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2640 column = gtk_tree_view_column_new_with_attributes
2641 ("Style", gtk_cell_renderer_text_new(),
2642 "text", 0, "sensitive", 3, (char *)NULL);
2643 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2644 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2645 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2646 "changed", G_CALLBACK(style_changed), fs);
2648 scroll = gtk_scrolled_window_new(NULL, NULL);
2649 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2651 gtk_container_add(GTK_CONTAINER(scroll), w);
2652 gtk_widget_show(scroll);
2653 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2654 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2655 gtk_widget_set_size_request(scroll, style_width, lists_height);
2656 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2657 GTK_EXPAND | GTK_FILL, 0, 0);
2658 fs->style_model = model;
2661 label = gtk_label_new_with_mnemonic("Si_ze:");
2662 gtk_widget_show(label);
2663 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2664 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2667 * The Size label attaches primarily to a text input box so
2668 * that the user can select a size of their choice. The list
2669 * of available sizes is secondary.
2671 fs->size_entry = w = gtk_entry_new();
2672 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2673 gtk_widget_set_size_request(w, size_width, -1);
2675 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2676 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2679 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2680 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2681 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2683 column = gtk_tree_view_column_new_with_attributes
2684 ("Size", gtk_cell_renderer_text_new(),
2685 "text", 0, (char *)NULL);
2686 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2687 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2688 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2689 "changed", G_CALLBACK(size_changed), fs);
2691 scroll = gtk_scrolled_window_new(NULL, NULL);
2692 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2694 gtk_container_add(GTK_CONTAINER(scroll), w);
2695 gtk_widget_show(scroll);
2696 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2697 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2698 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2699 GTK_EXPAND | GTK_FILL, 0, 0);
2700 fs->size_model = model;
2706 fs->preview_area = gtk_drawing_area_new();
2707 fs->preview_pixmap = NULL;
2708 fs->preview_width = 0;
2709 fs->preview_height = 0;
2710 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2711 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2712 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2713 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2715 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2717 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2718 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2719 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2720 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2721 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2722 gtk_widget_show(fs->preview_area);
2723 ww = fs->preview_area;
2724 w = gtk_frame_new(NULL);
2725 gtk_container_add(GTK_CONTAINER(w), ww);
2727 #if GTK_CHECK_VERSION(2,4,0)
2729 /* GtkAlignment seems to be the simplest way to put padding round things */
2730 w = gtk_alignment_new(0, 0, 1, 1);
2731 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2732 gtk_container_add(GTK_CONTAINER(w), ww);
2736 w = gtk_frame_new("Preview of font");
2737 gtk_container_add(GTK_CONTAINER(w), ww);
2739 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2740 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2743 w = gtk_check_button_new_with_label("Show client-side fonts");
2744 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2745 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2746 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2747 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2749 fs->filter_buttons[i++] = w;
2750 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2751 w = gtk_check_button_new_with_label("Show server-side fonts");
2752 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2753 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2754 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2755 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2757 fs->filter_buttons[i++] = w;
2758 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2759 w = gtk_check_button_new_with_label("Show server-side font aliases");
2760 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2761 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2762 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2763 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2765 fs->filter_buttons[i++] = w;
2766 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2767 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2768 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2769 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2770 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2771 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2773 fs->filter_buttons[i++] = w;
2774 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2776 assert(i == lenof(fs->filter_buttons));
2777 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
2778 FONTFLAG_SERVERALIAS;
2779 unifontsel_set_filter_buttons(fs);
2782 * Go and find all the font names, and set up our master font
2785 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2786 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2787 for (i = 0; i < lenof(unifont_types); i++)
2788 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2789 unifontsel_add_entry, fs);
2792 * And set up the initial font names list.
2794 unifontsel_setup_familylist(fs);
2796 fs->selsize = fs->intendedsize = 13; /* random default */
2797 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2799 return (unifontsel *)fs;
2802 void unifontsel_destroy(unifontsel *fontsel)
2804 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2807 if (fs->preview_pixmap)
2808 gdk_pixmap_unref(fs->preview_pixmap);
2810 freetree234(fs->fonts_by_selorder);
2811 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2813 freetree234(fs->fonts_by_realname);
2815 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2819 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2821 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2822 int i, start, end, size, flags;
2823 const char *fontname2 = NULL;
2827 * Provide a default if given an empty or null font name.
2829 if (!fontname || !*fontname)
2830 fontname = "server:fixed";
2833 * Call the canonify_fontname function.
2835 fontname = unifont_do_prefix(fontname, &start, &end);
2836 for (i = start; i < end; i++) {
2837 fontname2 = unifont_types[i]->canonify_fontname
2838 (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
2843 return; /* font name not recognised */
2846 * Now look up the canonified font name in our index.
2849 struct fontinfo_realname_find f;
2850 f.realname = fontname2;
2852 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2856 * If we've found the font, and its size field is either
2857 * correct or zero (the latter indicating a scalable font),
2858 * then we're done. Otherwise, try looking up the original
2859 * font name instead.
2861 if (!info || (info->size != size && info->size != 0)) {
2862 struct fontinfo_realname_find f;
2863 f.realname = fontname;
2866 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2867 if (!info || info->size != size)
2868 return; /* font name not in our index */
2872 * Now we've got a fontinfo structure and a font size, so we
2873 * know everything we need to fill in all the fields in the
2876 unifontsel_select_font(fs, info, size, 0, TRUE);
2879 char *unifontsel_get_name(unifontsel *fontsel)
2881 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2887 if (fs->selected->size == 0) {
2888 name = fs->selected->fontclass->scale_fontname
2889 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2891 char *ret = dupcat(fs->selected->fontclass->prefix, ":",
2898 return dupcat(fs->selected->fontclass->prefix, ":",
2899 fs->selected->realname, NULL);
2902 #endif /* GTK_CHECK_VERSION(2,0,0) */