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)) {
196 return NULL; /* XLFD was malformed */
203 /* 4 is `wideness', which obviously may have changed. */
204 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
205 strings[4] = strings[5] = "*";
206 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
209 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
210 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
211 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
212 "-", strings[ 9], "-", strings[10], "-", strings[11],
213 "-", strings[12], NULL);
223 static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
229 return XTextWidth16(xfs, &space, 1);
231 return XTextWidth(xfs, "0", 1);
235 static int x11_font_has_glyph(XFontStruct *xfs, int byte1, int byte2)
240 * Not to be confused with x11font_has_glyph, which is a method of
241 * the x11font 'class' and hence takes a unifont as argument. This
242 * is the low-level function which grubs about in an actual
243 * XFontStruct to see if a given glyph exists.
245 * We must do this ourselves rather than letting Xlib's
246 * XTextExtents16 do the job, because XTextExtents will helpfully
247 * substitute the font's default_char for any missing glyph and
248 * not tell us it did so, which precisely won't help us find out
249 * which glyphs _are_ missing.
251 * The man page for XQueryFont is rather confusing about how the
252 * per_char array in the XFontStruct is laid out, because it gives
253 * formulae for determining the two-byte X character code _from_
254 * an index into the per_char array. Going the other way, it's
257 * The valid character codes have byte1 between min_byte1 and
258 * max_byte1 inclusive, and byte2 between min_char_or_byte2 and
259 * max_char_or_byte2 inclusive. This gives a rectangle of size
260 * (max_byte2-min_byte1+1) by
261 * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the
262 * rectangle encoded in the per_char array. Hence, given a
263 * character code which is valid in the sense that it falls
264 * somewhere in that rectangle, its index in per_char is given by
267 * x = byte2 - min_char_or_byte2
268 * y = byte1 - min_byte1
269 * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x
271 * If min_byte1 and min_byte2 are both zero, that's a special case
272 * which can be treated as if min_byte2 was 1 instead, i.e. the
273 * per_char array just runs from min_char_or_byte2 to
274 * max_char_or_byte2 inclusive, and byte1 should always be zero.
277 if (byte2 < xfs->min_char_or_byte2 || byte2 > xfs->max_char_or_byte2)
280 if (xfs->min_byte1 == 0 && xfs->max_byte1 == 0) {
281 index = byte2 - xfs->min_char_or_byte2;
283 if (byte1 < xfs->min_byte1 || byte1 > xfs->max_byte1)
285 index = ((byte2 - xfs->min_char_or_byte2) +
286 ((byte1 - xfs->min_byte1) *
287 (xfs->max_char_or_byte2 - xfs->min_char_or_byte2 + 1)));
290 if (!xfs->per_char) /* per_char NULL => everything in range exists */
293 return (xfs->per_char[index].ascent + xfs->per_char[index].descent > 0 ||
294 xfs->per_char[index].width > 0);
297 static unifont *x11font_create(GtkWidget *widget, const char *name,
299 int shadowoffset, int shadowalways)
301 struct x11font *xfont;
303 Display *disp = GDK_DISPLAY();
304 Atom charset_registry, charset_encoding, spacing;
305 unsigned long registry_ret, encoding_ret, spacing_ret;
306 int pubcs, realcs, sixteen_bit, variable;
309 xfs = XLoadQueryFont(disp, name);
313 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
314 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
316 pubcs = realcs = CS_NONE;
320 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
321 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
323 reg = XGetAtomName(disp, (Atom)registry_ret);
324 enc = XGetAtomName(disp, (Atom)encoding_ret);
326 char *encoding = dupcat(reg, "-", enc, NULL);
327 pubcs = realcs = charset_from_xenc(encoding);
330 * iso10646-1 is the only wide font encoding we
331 * support. In this case, we expect clients to give us
332 * UTF-8, which this module must internally convert
333 * into 16-bit Unicode.
335 if (!strcasecmp(encoding, "iso10646-1")) {
337 pubcs = realcs = CS_UTF8;
341 * Hack for X line-drawing characters: if the primary font
342 * is encoded as ISO-8859-1, and has valid glyphs in the
343 * low character positions, it is assumed that those
344 * glyphs are the VT100 line-drawing character set.
346 if (pubcs == CS_ISO8859_1) {
348 for (ch = 1; ch < 32; ch++)
349 if (!x11_font_has_glyph(xfs, 0, ch))
352 realcs = CS_ISO8859_1_X11;
359 spacing = XInternAtom(disp, "SPACING", False);
360 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
362 spc = XGetAtomName(disp, (Atom)spacing_ret);
364 if (spc && strchr("CcMm", spc[0]))
368 xfont = snew(struct x11font);
369 xfont->u.vt = &x11font_vtable;
370 xfont->u.width = x11_font_width(xfs, sixteen_bit);
371 xfont->u.ascent = xfs->ascent;
372 xfont->u.descent = xfs->descent;
373 xfont->u.height = xfont->u.ascent + xfont->u.descent;
374 xfont->u.public_charset = pubcs;
375 xfont->u.want_fallback = TRUE;
376 xfont->real_charset = realcs;
377 xfont->fonts[0] = xfs;
378 xfont->allocated[0] = TRUE;
379 xfont->sixteen_bit = sixteen_bit;
380 xfont->variable = variable;
383 xfont->shadowoffset = shadowoffset;
384 xfont->shadowalways = shadowalways;
386 for (i = 1; i < lenof(xfont->fonts); i++) {
387 xfont->fonts[i] = NULL;
388 xfont->allocated[i] = FALSE;
391 return (unifont *)xfont;
394 static void x11font_destroy(unifont *font)
396 Display *disp = GDK_DISPLAY();
397 struct x11font *xfont = (struct x11font *)font;
400 for (i = 0; i < lenof(xfont->fonts); i++)
402 XFreeFont(disp, xfont->fonts[i]);
406 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
408 Display *disp = GDK_DISPLAY();
409 char *derived_name = x11_guess_derived_font_name
410 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
411 xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name);
412 xfont->allocated[sfid] = TRUE;
414 /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
417 static int x11font_has_glyph(unifont *font, wchar_t glyph)
419 struct x11font *xfont = (struct x11font *)font;
421 if (xfont->sixteen_bit) {
423 * This X font has 16-bit character indices, which means
424 * we can directly use our Unicode input value.
426 return x11_font_has_glyph(xfont->fonts[0], glyph >> 8, glyph & 0xFF);
429 * This X font has 8-bit indices, so we must convert to the
430 * appropriate character set.
433 int sblen = wc_to_mb(xfont->real_charset, 0, &glyph, 1,
434 sbstring, 2, "", NULL, NULL);
435 if (sblen == 0 || !sbstring[0])
436 return FALSE; /* not even in the charset */
438 return x11_font_has_glyph(xfont->fonts[0], 0,
439 (unsigned char)sbstring[0]);
443 #if !GTK_CHECK_VERSION(2,0,0)
444 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
447 static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs,
449 const XChar2b *string, int nchars,
451 int fontvariable, int cellwidth)
453 Display *disp = GDK_DISPLAY();
454 int step, nsteps, centre;
458 * In a variable-pitch font, we draw one character at a
459 * time, and centre it in the character cell.
466 * In a fixed-pitch font, we can draw the whole lot in one go.
473 while (nsteps-- > 0) {
476 X += (cellwidth - XTextWidth16(xfs, string, step)) / 2;
478 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
481 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
482 X + shadowoffset, y, string, step);
489 static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs,
491 const char *string, int nchars,
493 int fontvariable, int cellwidth)
495 Display *disp = GDK_DISPLAY();
496 int step, nsteps, centre;
500 * In a variable-pitch font, we draw one character at a
501 * time, and centre it in the character cell.
508 * In a fixed-pitch font, we can draw the whole lot in one go.
515 while (nsteps-- > 0) {
518 X += (cellwidth - XTextWidth(xfs, string, step)) / 2;
520 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
523 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
524 X + shadowoffset, y, string, step);
531 static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font,
532 int x, int y, const wchar_t *string, int len,
533 int wide, int bold, int cellwidth)
535 Display *disp = GDK_DISPLAY();
536 struct x11font *xfont = (struct x11font *)font;
537 GC gc = GDK_GC_XGC(gdkgc);
539 int shadowoffset = 0;
540 int mult = (wide ? 2 : 1);
546 * Decide which subfont we're using, and whether we have to
549 if (xfont->shadowalways && bold) {
550 shadowoffset = xfont->shadowoffset;
553 sfid = 2 * wide + bold;
554 if (!xfont->allocated[sfid])
555 x11_alloc_subfont(xfont, sfid);
556 if (bold && !xfont->fonts[sfid]) {
558 shadowoffset = xfont->shadowoffset;
559 sfid = 2 * wide + bold;
560 if (!xfont->allocated[sfid])
561 x11_alloc_subfont(xfont, sfid);
564 if (!xfont->fonts[sfid])
565 return; /* we've tried our best, but no luck */
567 XSetFont(disp, gc, xfont->fonts[sfid]->fid);
569 if (xfont->sixteen_bit) {
571 * This X font has 16-bit character indices, which means
572 * we can directly use our Unicode input string.
577 xcs = snewn(len, XChar2b);
578 for (i = 0; i < len; i++) {
579 xcs[i].byte1 = string[i] >> 8;
580 xcs[i].byte2 = string[i];
583 x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y,
584 xcs, len, shadowoffset,
585 xfont->variable, cellwidth * mult);
589 * This X font has 8-bit indices, so we must convert to the
590 * appropriate character set.
592 char *sbstring = snewn(len+1, char);
593 int sblen = wc_to_mb(xfont->real_charset, 0, string, len,
594 sbstring, len+1, ".", NULL, NULL);
595 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
596 sbstring, sblen, shadowoffset,
597 xfont->variable, cellwidth * mult);
602 static void x11font_enum_fonts(GtkWidget *widget,
603 fontsel_add_entry callback, void *callback_ctx)
607 int nnames, i, max, tmpsize;
611 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
613 XFreeFontNames(fontnames);
621 for (i = 0; i < nnames; i++) {
622 if (fontnames[i][0] == '-') {
624 * Dismember an XLFD and convert it into the format
625 * we'll be using in the font selector.
627 char *components[14];
628 char *p, *font, *style, *stylekey, *charset;
629 int j, weightkey, slantkey, setwidthkey;
630 int thistmpsize, fontsize, flags;
632 thistmpsize = 4 * strlen(fontnames[i]) + 256;
633 if (tmpsize < thistmpsize) {
634 tmpsize = thistmpsize;
635 tmp = sresize(tmp, tmpsize, char);
637 strcpy(tmp, fontnames[i]);
640 for (j = 0; j < 14; j++) {
644 while (*p && *p != '-')
650 * Font name is made up of fields 0 and 1, in reverse
651 * order with parentheses. (This is what the GTK 1.2 X
652 * font selector does, and it seems to come out
653 * looking reasonably sensible.)
656 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
659 * Charset is made up of fields 12 and 13.
662 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
665 * Style is a mixture of quite a lot of the fields,
666 * with some strange formatting.
669 p += sprintf(p, "%s", components[2][0] ? components[2] :
671 if (!g_ascii_strcasecmp(components[3], "i"))
672 p += sprintf(p, " italic");
673 else if (!g_ascii_strcasecmp(components[3], "o"))
674 p += sprintf(p, " oblique");
675 else if (!g_ascii_strcasecmp(components[3], "ri"))
676 p += sprintf(p, " reverse italic");
677 else if (!g_ascii_strcasecmp(components[3], "ro"))
678 p += sprintf(p, " reverse oblique");
679 else if (!g_ascii_strcasecmp(components[3], "ot"))
680 p += sprintf(p, " other-slant");
681 if (components[4][0] && g_ascii_strcasecmp(components[4], "normal"))
682 p += sprintf(p, " %s", components[4]);
683 if (!g_ascii_strcasecmp(components[10], "m"))
684 p += sprintf(p, " [M]");
685 if (!g_ascii_strcasecmp(components[10], "c"))
686 p += sprintf(p, " [C]");
687 if (components[5][0])
688 p += sprintf(p, " %s", components[5]);
691 * Style key is the same stuff as above, but with a
692 * couple of transformations done on it to make it
693 * sort more sensibly.
697 if (!g_ascii_strcasecmp(components[2], "medium") ||
698 !g_ascii_strcasecmp(components[2], "regular") ||
699 !g_ascii_strcasecmp(components[2], "normal") ||
700 !g_ascii_strcasecmp(components[2], "book"))
702 else if (!g_ascii_strncasecmp(components[2], "demi", 4) ||
703 !g_ascii_strncasecmp(components[2], "semi", 4))
707 if (!g_ascii_strcasecmp(components[3], "r"))
709 else if (!g_ascii_strncasecmp(components[3], "r", 1))
713 if (!g_ascii_strcasecmp(components[4], "normal"))
718 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
720 (int)strlen(components[2]), components[2],
722 (int)strlen(components[3]), components[3],
724 (int)strlen(components[4]), components[4],
725 (int)strlen(components[10]), components[10],
726 (int)strlen(components[5]), components[5]);
728 assert(p - tmp < thistmpsize);
731 * Size is in pixels, for our application, so we
732 * derive it directly from the pixel size field,
735 fontsize = atoi(components[6]);
738 * Flags: we need to know whether this is a monospaced
739 * font, which we do by examining the spacing field
742 flags = FONTFLAG_SERVERSIDE;
743 if (!strchr("CcMm", components[10][0]))
744 flags |= FONTFLAG_NONMONOSPACED;
747 * Not sure why, but sometimes the X server will
748 * deliver dummy font types in which fontsize comes
749 * out as zero. Filter those out.
752 callback(callback_ctx, fontnames[i], font, charset,
753 style, stylekey, fontsize, flags, &x11font_vtable);
756 * This isn't an XLFD, so it must be an alias.
757 * Transmit it with mostly null data.
759 * It would be nice to work out if it's monospaced
760 * here, but at the moment I can't see that being
761 * anything but computationally hideous. Ah well.
763 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
764 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
767 XFreeFontNames(fontnames);
770 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
771 int *size, int *flags,
775 * When given an X11 font name to try to make sense of for a
776 * font selector, we must attempt to load it (to see if it
777 * exists), and then canonify it by extracting its FONT
778 * property, which should give its full XLFD even if what we
779 * originally had was a wildcard.
781 * However, we must carefully avoid canonifying font
782 * _aliases_, unless specifically asked to, because the font
783 * selector treats them as worthwhile in their own right.
786 Display *disp = GDK_DISPLAY();
787 Atom fontprop, fontprop2;
790 xfs = XLoadQueryFont(disp, name);
793 return NULL; /* didn't make sense to us, sorry */
795 fontprop = XInternAtom(disp, "FONT", False);
797 if (XGetFontProperty(xfs, fontprop, &ret)) {
798 char *newname = XGetAtomName(disp, (Atom)ret);
800 unsigned long fsize = 12;
802 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
803 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
805 XFreeFont(disp, xfs);
807 if (name[0] == '-' || resolve_aliases)
808 *flags = FONTFLAG_SERVERSIDE;
810 *flags = FONTFLAG_SERVERALIAS;
812 return dupstr(name[0] == '-' || resolve_aliases ?
818 XFreeFont(disp, xfs);
820 return NULL; /* something went wrong */
823 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
826 return NULL; /* shan't */
829 #if GTK_CHECK_VERSION(2,0,0)
831 /* ----------------------------------------------------------------------
832 * Pango font implementation (for GTK 2 only).
835 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
836 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
839 static int pangofont_has_glyph(unifont *font, wchar_t glyph);
840 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
841 int x, int y, const wchar_t *string, int len,
842 int wide, int bold, int cellwidth);
843 static unifont *pangofont_create(GtkWidget *widget, const char *name,
845 int shadowoffset, int shadowalways);
846 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
848 int shadowoffset, int shadowalways);
849 static void pangofont_destroy(unifont *font);
850 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
852 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
853 int *size, int *flags,
854 int resolve_aliases);
855 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
863 PangoFontDescription *desc;
866 * The containing widget.
870 * Data passed in to unifont_create().
872 int bold, shadowoffset, shadowalways;
874 * Cache of character widths, indexed by Unicode code point. In
875 * pixels; -1 means we haven't asked Pango about this character
879 unsigned nwidthcache;
882 static const struct unifont_vtable pangofont_vtable = {
884 pangofont_create_fallback,
888 pangofont_enum_fonts,
889 pangofont_canonify_fontname,
890 pangofont_scale_fontname,
895 * This function is used to rigorously validate a
896 * PangoFontDescription. Later versions of Pango have a nasty
897 * habit of accepting _any_ old string as input to
898 * pango_font_description_from_string and returning a font
899 * description which can actually be used to display text, even if
900 * they have to do it by falling back to their most default font.
901 * This is doubtless helpful in some situations, but not here,
902 * because we need to know if a Pango font string actually _makes
903 * sense_ in order to fall back to treating it as an X font name
904 * if it doesn't. So we check that the font family is actually one
905 * supported by Pango.
907 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
908 PangoFontDescription *desc)
910 #ifndef PANGO_PRE_1POINT6
913 PangoFontFamily **families;
914 int i, nfamilies, matched;
917 * Ask Pango for a list of font families, and iterate through
918 * them to see if one of them matches the family in the
919 * PangoFontDescription.
921 #ifndef PANGO_PRE_1POINT6
922 map = pango_context_get_font_map(ctx);
925 pango_font_map_list_families(map, &families, &nfamilies);
927 pango_context_list_families(ctx, &families, &nfamilies);
931 for (i = 0; i < nfamilies; i++) {
932 if (!g_ascii_strcasecmp(pango_font_family_get_name(families[i]),
933 pango_font_description_get_family(desc))) {
943 static unifont *pangofont_create_internal(GtkWidget *widget,
945 PangoFontDescription *desc,
947 int shadowoffset, int shadowalways)
949 struct pangofont *pfont;
950 #ifndef PANGO_PRE_1POINT6
954 PangoFontMetrics *metrics;
956 #ifndef PANGO_PRE_1POINT6
957 map = pango_context_get_font_map(ctx);
959 pango_font_description_free(desc);
962 fset = pango_font_map_load_fontset(map, ctx, desc,
963 pango_context_get_language(ctx));
965 fset = pango_context_load_fontset(ctx, desc,
966 pango_context_get_language(ctx));
969 pango_font_description_free(desc);
972 metrics = pango_fontset_get_metrics(fset);
974 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
975 pango_font_description_free(desc);
976 g_object_unref(fset);
980 pfont = snew(struct pangofont);
981 pfont->u.vt = &pangofont_vtable;
983 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
984 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
985 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
986 pfont->u.height = pfont->u.ascent + pfont->u.descent;
987 pfont->u.want_fallback = FALSE;
988 /* The Pango API is hardwired to UTF-8 */
989 pfont->u.public_charset = CS_UTF8;
992 pfont->widget = widget;
994 pfont->shadowoffset = shadowoffset;
995 pfont->shadowalways = shadowalways;
996 pfont->widthcache = NULL;
997 pfont->nwidthcache = 0;
999 pango_font_metrics_unref(metrics);
1001 return (unifont *)pfont;
1004 static unifont *pangofont_create(GtkWidget *widget, const char *name,
1006 int shadowoffset, int shadowalways)
1009 PangoFontDescription *desc;
1011 desc = pango_font_description_from_string(name);
1014 ctx = gtk_widget_get_pango_context(widget);
1016 pango_font_description_free(desc);
1019 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1020 pango_font_description_free(desc);
1023 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1024 shadowoffset, shadowalways);
1027 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
1029 int shadowoffset, int shadowalways)
1032 PangoFontDescription *desc;
1034 desc = pango_font_description_from_string("Monospace");
1037 ctx = gtk_widget_get_pango_context(widget);
1039 pango_font_description_free(desc);
1042 pango_font_description_set_absolute_size(desc, height * PANGO_SCALE);
1043 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1044 shadowoffset, shadowalways);
1047 static void pangofont_destroy(unifont *font)
1049 struct pangofont *pfont = (struct pangofont *)font;
1050 pango_font_description_free(pfont->desc);
1051 sfree(pfont->widthcache);
1052 g_object_unref(pfont->fset);
1056 static int pangofont_char_width(PangoLayout *layout, struct pangofont *pfont,
1057 wchar_t uchr, const char *utfchr, int utflen)
1060 * Here we check whether a character has the same width as the
1061 * character cell it'll be drawn in. Because profiling showed that
1062 * pango_layout_get_pixel_extents() was a huge bottleneck when we
1063 * were calling it every time we needed to know this, we instead
1064 * call it only on characters we don't already know about, and
1065 * cache the results.
1068 if ((unsigned)uchr >= pfont->nwidthcache) {
1069 unsigned newsize = ((int)uchr + 0x100) & ~0xFF;
1070 pfont->widthcache = sresize(pfont->widthcache, newsize, int);
1071 while (pfont->nwidthcache < newsize)
1072 pfont->widthcache[pfont->nwidthcache++] = -1;
1075 if (pfont->widthcache[uchr] < 0) {
1076 PangoRectangle rect;
1077 pango_layout_set_text(layout, utfchr, utflen);
1078 pango_layout_get_pixel_extents(layout, NULL, &rect);
1079 pfont->widthcache[uchr] = rect.width;
1082 return pfont->widthcache[uchr];
1085 static int pangofont_has_glyph(unifont *font, wchar_t glyph)
1087 /* Pango implements font fallback, so assume it has everything */
1091 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1092 int x, int y, const wchar_t *string, int len,
1093 int wide, int bold, int cellwidth)
1095 struct pangofont *pfont = (struct pangofont *)font;
1096 PangoLayout *layout;
1097 PangoRectangle rect;
1098 char *utfstring, *utfptr;
1100 int shadowbold = FALSE;
1105 y -= pfont->u.ascent;
1107 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
1108 pango_layout_set_font_description(layout, pfont->desc);
1109 if (bold > pfont->bold) {
1110 if (pfont->shadowalways)
1113 PangoFontDescription *desc2 =
1114 pango_font_description_copy_static(pfont->desc);
1115 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
1116 pango_layout_set_font_description(layout, desc2);
1121 * Pango always expects UTF-8, so convert the input wide character
1124 utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */
1125 utflen = wc_to_mb(CS_UTF8, 0, string, len,
1126 utfstring, len*6+1, ".", NULL, NULL);
1129 while (utflen > 0) {
1133 * We want to display every character from this string in
1134 * the centre of its own character cell. In the worst case,
1135 * this requires a separate text-drawing call for each
1136 * character; but in the common case where the font is
1137 * properly fixed-width, we can draw many characters in one
1138 * go which is much faster.
1140 * This still isn't really ideal. If you look at what
1141 * happens in the X protocol as a result of all of this, you
1142 * find - naturally enough - that each call to
1143 * gdk_draw_layout() generates a separate set of X RENDER
1144 * operations involving creating a picture, setting a clip
1145 * rectangle, doing some drawing and undoing the whole lot.
1146 * In an ideal world, we should _always_ be able to turn the
1147 * contents of this loop into a single RenderCompositeGlyphs
1148 * operation which internally specifies inter-character
1149 * deltas to get the spacing right, which would give us full
1150 * speed _even_ in the worst case of a non-fixed-width font.
1151 * However, Pango's architecture and documentation are so
1152 * unhelpful that I have no idea how if at all to persuade
1157 * Start by extracting a single UTF-8 character from the
1161 while (clen < utflen &&
1162 (unsigned char)utfptr[clen] >= 0x80 &&
1163 (unsigned char)utfptr[clen] < 0xC0)
1167 if (is_rtl(string[0]) ||
1168 pangofont_char_width(layout, pfont, string[n-1],
1169 utfptr, clen) != cellwidth) {
1171 * If this character is a right-to-left one, or has an
1172 * unusual width, then we must display it on its own.
1176 * Try to amalgamate a contiguous string of characters
1177 * with the expected sensible width, for the common case
1178 * in which we're using a monospaced font and everything
1179 * works as expected.
1181 while (clen < utflen) {
1183 clen++; /* skip UTF-8 introducer byte */
1184 while (clen < utflen &&
1185 (unsigned char)utfptr[clen] >= 0x80 &&
1186 (unsigned char)utfptr[clen] < 0xC0)
1189 if (pangofont_char_width(layout, pfont,
1190 string[n-1], utfptr + oldclen,
1191 clen - oldclen) != cellwidth) {
1199 pango_layout_set_text(layout, utfptr, clen);
1200 pango_layout_get_pixel_extents(layout, NULL, &rect);
1201 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2,
1202 y + (pfont->u.height - rect.height)/2, layout);
1204 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
1205 y + (pfont->u.height - rect.height)/2, layout);
1215 g_object_unref(layout);
1219 * Dummy size value to be used when converting a
1220 * PangoFontDescription of a scalable font to a string for
1223 #define PANGO_DUMMY_SIZE 12
1225 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1229 #ifndef PANGO_PRE_1POINT6
1232 PangoFontFamily **families;
1235 ctx = gtk_widget_get_pango_context(widget);
1240 * Ask Pango for a list of font families, and iterate through
1243 #ifndef PANGO_PRE_1POINT6
1244 map = pango_context_get_font_map(ctx);
1247 pango_font_map_list_families(map, &families, &nfamilies);
1249 pango_context_list_families(ctx, &families, &nfamilies);
1251 for (i = 0; i < nfamilies; i++) {
1252 PangoFontFamily *family = families[i];
1253 const char *familyname;
1255 PangoFontFace **faces;
1259 * Set up our flags for this font family, and get the name
1262 flags = FONTFLAG_CLIENTSIDE;
1263 #ifndef PANGO_PRE_1POINT4
1265 * In very early versions of Pango, we can't tell
1266 * monospaced fonts from non-monospaced.
1268 if (!pango_font_family_is_monospace(family))
1269 flags |= FONTFLAG_NONMONOSPACED;
1271 familyname = pango_font_family_get_name(family);
1274 * Go through the available font faces in this family.
1276 pango_font_family_list_faces(family, &faces, &nfaces);
1277 for (j = 0; j < nfaces; j++) {
1278 PangoFontFace *face = faces[j];
1279 PangoFontDescription *desc;
1280 const char *facename;
1282 int k, nsizes, dummysize;
1285 * Get the face name string.
1287 facename = pango_font_face_get_face_name(face);
1290 * Set up a font description with what we've got so
1291 * far. We'll fill in the size field manually and then
1292 * call pango_font_description_to_string() to give the
1293 * full real name of the specific font.
1295 desc = pango_font_face_describe(face);
1298 * See if this font has a list of specific sizes.
1300 #ifndef PANGO_PRE_1POINT4
1301 pango_font_face_list_sizes(face, &sizes, &nsizes);
1304 * In early versions of Pango, that call wasn't
1305 * supported; we just have to assume everything is
1312 * Write a single entry with a dummy size.
1314 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1320 * If so, go through them one by one.
1322 for (k = 0; k < nsizes; k++) {
1326 pango_font_description_set_size(desc, sizes[k]);
1328 fullname = pango_font_description_to_string(desc);
1331 * Construct the sorting key for font styles.
1337 n = pango_font_description_get_weight(desc);
1338 /* Weight: normal, then lighter, then bolder */
1339 if (n <= PANGO_WEIGHT_NORMAL)
1340 n = PANGO_WEIGHT_NORMAL - n;
1341 p += sprintf(p, "%4d", n);
1343 n = pango_font_description_get_style(desc);
1344 p += sprintf(p, " %2d", n);
1346 n = pango_font_description_get_stretch(desc);
1347 /* Stretch: closer to normal sorts earlier */
1348 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1349 (n < PANGO_STRETCH_NORMAL);
1350 p += sprintf(p, " %2d", n);
1352 n = pango_font_description_get_variant(desc);
1353 p += sprintf(p, " %2d", n);
1358 * Got everything. Hand off to the callback.
1359 * (The charset string is NULL, because only
1360 * server-side X fonts use it.)
1362 callback(callback_ctx, fullname, familyname, NULL, facename,
1364 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1365 flags, &pangofont_vtable);
1369 if (sizes != &dummysize)
1372 pango_font_description_free(desc);
1379 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1380 int *size, int *flags,
1381 int resolve_aliases)
1384 * When given a Pango font name to try to make sense of for a
1385 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1386 * extract its original size (in pixels) into the `size' field.
1389 #ifndef PANGO_PRE_1POINT6
1392 PangoFontDescription *desc;
1394 PangoFontMetrics *metrics;
1395 char *newname, *retname;
1397 desc = pango_font_description_from_string(name);
1400 ctx = gtk_widget_get_pango_context(widget);
1402 pango_font_description_free(desc);
1405 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1406 pango_font_description_free(desc);
1409 #ifndef PANGO_PRE_1POINT6
1410 map = pango_context_get_font_map(ctx);
1412 pango_font_description_free(desc);
1415 fset = pango_font_map_load_fontset(map, ctx, desc,
1416 pango_context_get_language(ctx));
1418 fset = pango_context_load_fontset(ctx, desc,
1419 pango_context_get_language(ctx));
1422 pango_font_description_free(desc);
1425 metrics = pango_fontset_get_metrics(fset);
1427 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1428 pango_font_description_free(desc);
1429 g_object_unref(fset);
1433 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1434 *flags = FONTFLAG_CLIENTSIDE;
1435 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1436 newname = pango_font_description_to_string(desc);
1437 retname = dupstr(newname);
1440 pango_font_metrics_unref(metrics);
1441 pango_font_description_free(desc);
1442 g_object_unref(fset);
1447 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1450 PangoFontDescription *desc;
1451 char *newname, *retname;
1453 desc = pango_font_description_from_string(name);
1456 pango_font_description_set_size(desc, size * PANGO_SCALE);
1457 newname = pango_font_description_to_string(desc);
1458 retname = dupstr(newname);
1460 pango_font_description_free(desc);
1465 #endif /* GTK_CHECK_VERSION(2,0,0) */
1467 /* ----------------------------------------------------------------------
1468 * Outermost functions which do the vtable dispatch.
1472 * Complete list of font-type subclasses. Listed in preference
1473 * order for unifont_create(). (That is, in the extremely unlikely
1474 * event that the same font name is valid as both a Pango and an
1475 * X11 font, it will be interpreted as the former in the absence
1476 * of an explicit type-disambiguating prefix.)
1478 * The 'multifont' subclass is omitted here, as discussed above.
1480 static const struct unifont_vtable *unifont_types[] = {
1481 #if GTK_CHECK_VERSION(2,0,0)
1488 * Function which takes a font name and processes the optional
1489 * scheme prefix. Returns the tail of the font name suitable for
1490 * passing to individual font scheme functions, and also provides
1491 * a subrange of the unifont_types[] array above.
1493 * The return values `start' and `end' denote a half-open interval
1494 * in unifont_types[]; that is, the correct way to iterate over
1497 * for (i = start; i < end; i++) {...}
1499 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1501 int colonpos = strcspn(name, ":");
1504 if (name[colonpos]) {
1506 * There's a colon prefix on the font name. Use it to work
1507 * out which subclass to use.
1509 for (i = 0; i < lenof(unifont_types); i++) {
1510 if (strlen(unifont_types[i]->prefix) == colonpos &&
1511 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1514 return name + colonpos + 1;
1518 * None matched, so return an empty scheme list to prevent
1519 * any scheme from being called at all.
1522 return name + colonpos + 1;
1525 * No colon prefix, so just use all the subclasses.
1528 *end = lenof(unifont_types);
1533 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1534 int bold, int shadowoffset, int shadowalways)
1538 name = unifont_do_prefix(name, &start, &end);
1540 for (i = start; i < end; i++) {
1541 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1542 shadowoffset, shadowalways);
1546 return NULL; /* font not found in any scheme */
1549 void unifont_destroy(unifont *font)
1551 font->vt->destroy(font);
1554 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1555 int x, int y, const wchar_t *string, int len,
1556 int wide, int bold, int cellwidth)
1558 font->vt->draw_text(target, gc, font, x, y, string, len,
1559 wide, bold, cellwidth);
1562 /* ----------------------------------------------------------------------
1563 * Multiple-font wrapper. This is a type of unifont which encapsulates
1564 * up to two other unifonts, permitting missing glyphs in the main
1565 * font to be filled in by a fallback font.
1567 * This is a type of unifont just like the previous two, but it has a
1568 * separate constructor which is manually called by the client, so it
1569 * doesn't appear in the list of available font types enumerated by
1570 * unifont_create. This means it's not used by unifontsel either, so
1571 * it doesn't need to support any methods except draw_text and
1575 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1576 int x, int y, const wchar_t *string, int len,
1577 int wide, int bold, int cellwidth);
1578 static void multifont_destroy(unifont *font);
1586 static const struct unifont_vtable multifont_vtable = {
1587 NULL, /* creation is done specially */
1591 multifont_draw_text,
1598 unifont *multifont_create(GtkWidget *widget, const char *name,
1600 int shadowoffset, int shadowalways)
1603 unifont *font, *fallback;
1604 struct multifont *mfont;
1606 font = unifont_create(widget, name, wide, bold,
1607 shadowoffset, shadowalways);
1612 if (font->want_fallback) {
1613 for (i = 0; i < lenof(unifont_types); i++) {
1614 if (unifont_types[i]->create_fallback) {
1615 fallback = unifont_types[i]->create_fallback
1616 (widget, font->height, wide, bold,
1617 shadowoffset, shadowalways);
1625 * Construct our multifont. Public members are all copied from the
1626 * primary font we're wrapping.
1628 mfont = snew(struct multifont);
1629 mfont->u.vt = &multifont_vtable;
1630 mfont->u.width = font->width;
1631 mfont->u.ascent = font->ascent;
1632 mfont->u.descent = font->descent;
1633 mfont->u.height = font->height;
1634 mfont->u.public_charset = font->public_charset;
1635 mfont->u.want_fallback = FALSE; /* shouldn't be needed, but just in case */
1637 mfont->fallback = fallback;
1639 return (unifont *)mfont;
1642 static void multifont_destroy(unifont *font)
1644 struct multifont *mfont = (struct multifont *)font;
1645 unifont_destroy(mfont->main);
1646 if (mfont->fallback)
1647 unifont_destroy(mfont->fallback);
1651 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1652 int x, int y, const wchar_t *string, int len,
1653 int wide, int bold, int cellwidth)
1655 struct multifont *mfont = (struct multifont *)font;
1660 * Find a maximal sequence of characters which are, or are
1661 * not, supported by our main font.
1663 ok = mfont->main->vt->has_glyph(mfont->main, string[0]);
1666 !mfont->main->vt->has_glyph(mfont->main, string[i]) == !ok;
1672 unifont_draw_text(target, gc, ok ? mfont->main : mfont->fallback,
1673 x, y, string, i, wide, bold, cellwidth);
1680 #if GTK_CHECK_VERSION(2,0,0)
1682 /* ----------------------------------------------------------------------
1683 * Implementation of a unified font selector. Used on GTK 2 only;
1684 * for GTK 1 we still use the standard font selector.
1687 typedef struct fontinfo fontinfo;
1689 typedef struct unifontsel_internal {
1690 /* This must be the structure's first element, for cross-casting */
1692 GtkListStore *family_model, *style_model, *size_model;
1693 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1694 GtkWidget *filter_buttons[4];
1695 GtkWidget *preview_area;
1696 GdkPixmap *preview_pixmap;
1697 int preview_width, preview_height;
1698 GdkColor preview_fg, preview_bg;
1700 tree234 *fonts_by_realname, *fonts_by_selorder;
1702 int selsize, intendedsize;
1703 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1704 } unifontsel_internal;
1707 * The structure held in the tree234s. All the string members are
1708 * part of the same allocated area, so don't need freeing
1713 char *family, *charset, *style, *stylekey;
1716 * Fallback sorting key, to permit multiple identical entries
1717 * to exist in the selorder tree.
1721 * Indices mapping fontinfo structures to indices in the list
1722 * boxes. sizeindex is irrelevant if the font is scalable
1725 int familyindex, styleindex, sizeindex;
1727 * The class of font.
1729 const struct unifont_vtable *fontclass;
1732 struct fontinfo_realname_find {
1733 const char *realname;
1737 static int strnullcasecmp(const char *a, const char *b)
1742 * If exactly one of the inputs is NULL, it compares before
1745 if ((i = (!b) - (!a)) != 0)
1749 * NULL compares equal.
1755 * Otherwise, ordinary strcasecmp.
1757 return g_ascii_strcasecmp(a, b);
1760 static int fontinfo_realname_compare(void *av, void *bv)
1762 fontinfo *a = (fontinfo *)av;
1763 fontinfo *b = (fontinfo *)bv;
1766 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1768 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1769 return ((a->flags & FONTFLAG_SORT_MASK) <
1770 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1774 static int fontinfo_realname_find(void *av, void *bv)
1776 struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
1777 fontinfo *b = (fontinfo *)bv;
1780 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1782 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1783 return ((a->flags & FONTFLAG_SORT_MASK) <
1784 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1788 static int fontinfo_selorder_compare(void *av, void *bv)
1790 fontinfo *a = (fontinfo *)av;
1791 fontinfo *b = (fontinfo *)bv;
1793 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1796 * Font class comes immediately after family, so that fonts
1797 * from different classes with the same family
1799 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1800 return ((a->flags & FONTFLAG_SORT_MASK) <
1801 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1802 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1804 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1806 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1808 if (a->size != b->size)
1809 return (a->size < b->size ? -1 : +1);
1810 if (a->index != b->index)
1811 return (a->index < b->index ? -1 : +1);
1815 static void unifontsel_deselect(unifontsel_internal *fs)
1817 fs->selected = NULL;
1818 gtk_list_store_clear(fs->style_model);
1819 gtk_list_store_clear(fs->size_model);
1820 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
1821 gtk_widget_set_sensitive(fs->size_entry, FALSE);
1824 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1827 int i, listindex, minpos = -1, maxpos = -1;
1828 char *currfamily = NULL;
1832 gtk_list_store_clear(fs->family_model);
1836 * Search through the font tree for anything matching our
1837 * current filter criteria. When we find one, add its font
1838 * name to the list box.
1840 for (i = 0 ;; i++) {
1841 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1843 * info may be NULL if we've just run off the end of the
1844 * tree. We must still do a processing pass in that
1845 * situation, in case we had an unfinished font record in
1848 if (info && (info->flags &~ fs->filter_flags)) {
1849 info->familyindex = -1;
1850 continue; /* we're filtering out this font */
1852 if (!info || strnullcasecmp(currfamily, info->family) ||
1853 currflags != (info->flags & FONTFLAG_SORT_MASK)) {
1855 * We've either finished a family, or started a new
1859 gtk_list_store_append(fs->family_model, &iter);
1860 gtk_list_store_set(fs->family_model, &iter,
1861 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1866 currfamily = info->family;
1867 currflags = info->flags & FONTFLAG_SORT_MASK;
1871 break; /* now we're done */
1872 info->familyindex = listindex;
1877 * If we've just filtered out the previously selected font,
1878 * deselect it thoroughly.
1880 if (fs->selected && fs->selected->familyindex < 0)
1881 unifontsel_deselect(fs);
1884 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1888 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1889 char *currcs = NULL, *currstyle = NULL;
1892 gtk_list_store_clear(fs->style_model);
1897 * Search through the font tree for anything matching our
1898 * current filter criteria. When we find one, add its charset
1899 * and/or style name to the list box.
1901 for (i = start; i <= end; i++) {
1905 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1907 * info may be NULL if we've just run off the end of the
1908 * relevant data. We must still do a processing pass in
1909 * that situation, in case we had an unfinished font
1910 * record in progress.
1912 if (info && (info->flags &~ fs->filter_flags)) {
1913 info->styleindex = -1;
1914 continue; /* we're filtering out this font */
1916 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1917 strnullcasecmp(currstyle, info->style)) {
1919 * We've either finished a style/charset, or started a
1924 gtk_list_store_append(fs->style_model, &iter);
1925 gtk_list_store_set(fs->style_model, &iter,
1926 0, currstyle, 1, minpos, 2, maxpos+1,
1932 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1933 gtk_list_store_append(fs->style_model, &iter);
1934 gtk_list_store_set(fs->style_model, &iter,
1935 0, info->charset, 1, -1, 2, -1,
1939 currcs = info->charset;
1940 currstyle = info->style;
1944 break; /* now we're done */
1945 info->styleindex = listindex;
1950 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1952 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1960 gtk_list_store_clear(fs->size_model);
1964 * Search through the font tree for anything matching our
1965 * current filter criteria. When we find one, add its font
1966 * name to the list box.
1968 for (i = start; i < end; i++) {
1969 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1970 if (info->flags &~ fs->filter_flags) {
1971 info->sizeindex = -1;
1972 continue; /* we're filtering out this font */
1975 sprintf(sizetext, "%d", info->size);
1976 info->sizeindex = listindex;
1977 gtk_list_store_append(fs->size_model, &iter);
1978 gtk_list_store_set(fs->size_model, &iter,
1979 0, sizetext, 1, i, 2, info->size, -1);
1987 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1988 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1989 gtk_list_store_append(fs->size_model, &iter);
1990 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1991 2, unifontsel_default_sizes[j], -1);
1998 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
2002 for (i = 0; i < lenof(fs->filter_buttons); i++) {
2003 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
2004 (GTK_OBJECT(fs->filter_buttons[i]),
2006 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
2007 !!(fs->filter_flags & flagbit));
2011 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
2014 char *sizename = NULL;
2015 fontinfo *info = fs->selected;
2018 sizename = info->fontclass->scale_fontname
2019 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
2020 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
2021 sizename ? sizename : info->realname,
2022 FALSE, FALSE, 0, 0);
2026 if (fs->preview_pixmap) {
2027 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
2028 gdk_gc_set_foreground(gc, &fs->preview_bg);
2029 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
2030 fs->preview_width, fs->preview_height);
2031 gdk_gc_set_foreground(gc, &fs->preview_fg);
2034 * The pangram used here is rather carefully
2035 * constructed: it contains a sequence of very narrow
2036 * letters (`jil') and a pair of adjacent very wide
2039 * If the user selects a proportional font, it will be
2040 * coerced into fixed-width character cells when used
2041 * in the actual terminal window. We therefore display
2042 * it the same way in the preview pane, so as to show
2043 * it the way it will actually be displayed - and we
2044 * deliberately pick a pangram which will show the
2045 * resulting miskerning at its worst.
2047 * We aren't trying to sell people these fonts; we're
2048 * trying to let them make an informed choice. Better
2049 * that they find out the problems with using
2050 * proportional fonts in terminal windows here than
2051 * that they go to the effort of selecting their font
2052 * and _then_ realise it was a mistake.
2054 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2056 L"bankrupt jilted showmen quiz convex fogey",
2057 41, FALSE, FALSE, font->width);
2058 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2059 0, font->ascent + font->height,
2060 L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
2061 41, FALSE, FALSE, font->width);
2063 * The ordering of punctuation here is also selected
2064 * with some specific aims in mind. I put ` and '
2065 * together because some software (and people) still
2066 * use them as matched quotes no matter what Unicode
2067 * might say on the matter, so people can quickly
2068 * check whether they look silly in a candidate font.
2069 * The sequence #_@ is there to let people judge the
2070 * suitability of the underscore as an effectively
2071 * alphabetic character (since that's how it's often
2072 * used in practice, at least by programmers).
2074 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2075 0, font->ascent + font->height * 2,
2076 L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
2077 42, FALSE, FALSE, font->width);
2080 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
2083 info->fontclass->destroy(font);
2088 static void unifontsel_select_font(unifontsel_internal *fs,
2089 fontinfo *info, int size, int leftlist,
2090 int size_is_explicit)
2094 GtkTreePath *treepath;
2097 fs->inhibit_response = TRUE;
2099 fs->selected = info;
2101 if (size_is_explicit)
2102 fs->intendedsize = size;
2104 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
2107 * Find the index of this fontinfo in the selorder list.
2110 findpos234(fs->fonts_by_selorder, info, NULL, &index);
2114 * Adjust the font selector flags and redo the font family
2115 * list box, if necessary.
2117 if (leftlist <= 0 &&
2118 (fs->filter_flags | info->flags) != fs->filter_flags) {
2119 fs->filter_flags |= info->flags;
2120 unifontsel_set_filter_buttons(fs);
2121 unifontsel_setup_familylist(fs);
2125 * Find the appropriate family name and select it in the list.
2127 assert(info->familyindex >= 0);
2128 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
2129 gtk_tree_selection_select_path
2130 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
2132 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
2133 treepath, NULL, FALSE, 0.0, 0.0);
2134 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
2135 gtk_tree_path_free(treepath);
2138 * Now set up the font style list.
2140 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
2141 1, &minval, 2, &maxval, -1);
2143 unifontsel_setup_stylelist(fs, minval, maxval);
2146 * Find the appropriate style name and select it in the list.
2149 assert(info->styleindex >= 0);
2150 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
2151 gtk_tree_selection_select_path
2152 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
2154 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
2155 treepath, NULL, FALSE, 0.0, 0.0);
2156 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
2158 gtk_tree_path_free(treepath);
2161 * And set up the size list.
2163 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
2164 1, &minval, 2, &maxval, -1);
2166 unifontsel_setup_sizelist(fs, minval, maxval);
2169 * Find the appropriate size, and select it in the list.
2172 assert(info->sizeindex >= 0);
2173 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
2174 gtk_tree_selection_select_path
2175 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
2177 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2178 treepath, NULL, FALSE, 0.0, 0.0);
2179 gtk_tree_path_free(treepath);
2183 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
2184 if (unifontsel_default_sizes[j] == size) {
2185 treepath = gtk_tree_path_new_from_indices(j, -1);
2186 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
2187 treepath, NULL, FALSE);
2188 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2189 treepath, NULL, FALSE, 0.0,
2191 gtk_tree_path_free(treepath);
2196 * And set up the font size text entry box.
2200 sprintf(sizetext, "%d", size);
2201 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
2205 unifontsel_setup_sizelist(fs, 0, 0);
2206 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
2210 * Grey out the font size edit box if we're not using a
2213 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
2214 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
2216 unifontsel_draw_preview_text(fs);
2218 fs->inhibit_response = FALSE;
2221 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
2223 unifontsel_internal *fs = (unifontsel_internal *)data;
2224 int newstate = gtk_toggle_button_get_active(tb);
2226 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
2230 newflags = fs->filter_flags | flagbit;
2232 newflags = fs->filter_flags & ~flagbit;
2234 if (fs->filter_flags != newflags) {
2235 fs->filter_flags = newflags;
2236 unifontsel_setup_familylist(fs);
2240 static void unifontsel_add_entry(void *ctx, const char *realfontname,
2241 const char *family, const char *charset,
2242 const char *style, const char *stylekey,
2243 int size, int flags,
2244 const struct unifont_vtable *fontclass)
2246 unifontsel_internal *fs = (unifontsel_internal *)ctx;
2251 totalsize = sizeof(fontinfo) + strlen(realfontname) +
2252 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
2253 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
2254 info = (fontinfo *)smalloc(totalsize);
2255 info->fontclass = fontclass;
2256 p = (char *)info + sizeof(fontinfo);
2258 strcpy(p, realfontname);
2265 info->family = NULL;
2271 info->charset = NULL;
2280 strcpy(p, stylekey);
2283 info->stylekey = NULL;
2284 assert(p - (char *)info <= totalsize);
2286 info->flags = flags;
2287 info->index = count234(fs->fonts_by_selorder);
2290 * It's just conceivable that a misbehaving font enumerator
2291 * might tell us about the same font real name more than once,
2292 * in which case we should silently drop the new one.
2294 if (add234(fs->fonts_by_realname, info) != info) {
2299 * However, we should never get a duplicate key in the
2300 * selorder tree, because the index field carefully
2301 * disambiguates otherwise identical records.
2303 add234(fs->fonts_by_selorder, info);
2306 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
2309 fontinfo info2, *below, *above;
2313 * Copy the info structure. This doesn't copy its dynamic
2314 * string fields, but that's unimportant because all we're
2315 * going to do is to adjust the size field and use it in one
2319 info2.size = fs->intendedsize;
2322 * Search in the tree to find the fontinfo structure which
2323 * best approximates the size the user last requested.
2325 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
2329 above = index234(fs->fonts_by_selorder, pos+1);
2332 * See if we've found it exactly, which is an easy special
2333 * case. If we have, it'll be in `below' and not `above',
2334 * because we did a REL234_LE rather than REL234_LT search.
2336 if (below && !fontinfo_selorder_compare(&info2, below))
2340 * Now we've either found two suitable fonts, one smaller and
2341 * one larger, or we're at one or other extreme end of the
2342 * scale. Find out which, by NULLing out either of below and
2343 * above if it differs from this one in any respect but size
2344 * (and the disambiguating index field). Bear in mind, also,
2345 * that either one might _already_ be NULL if we're at the
2346 * extreme ends of the font list.
2349 info2.size = below->size;
2350 info2.index = below->index;
2351 if (fontinfo_selorder_compare(&info2, below))
2355 info2.size = above->size;
2356 info2.index = above->index;
2357 if (fontinfo_selorder_compare(&info2, above))
2362 * Now return whichever of above and below is non-NULL, if
2363 * that's unambiguous.
2371 * And now we really do have to make a choice about whether to
2372 * round up or down. We'll do it by rounding to nearest,
2373 * breaking ties by rounding up.
2375 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
2381 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
2383 unifontsel_internal *fs = (unifontsel_internal *)data;
2384 GtkTreeModel *treemodel;
2385 GtkTreeIter treeiter;
2389 if (fs->inhibit_response) /* we made this change ourselves */
2392 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2395 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2396 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2397 info = update_for_intended_size(fs, info);
2399 return; /* _shouldn't_ happen unless font list is completely funted */
2401 fs->selsize = fs->intendedsize; /* font is scalable */
2402 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2406 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
2408 unifontsel_internal *fs = (unifontsel_internal *)data;
2409 GtkTreeModel *treemodel;
2410 GtkTreeIter treeiter;
2414 if (fs->inhibit_response) /* we made this change ourselves */
2417 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2420 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2422 return; /* somehow a charset heading got clicked */
2423 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2424 info = update_for_intended_size(fs, info);
2426 return; /* _shouldn't_ happen unless font list is completely funted */
2428 fs->selsize = fs->intendedsize; /* font is scalable */
2429 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2433 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
2435 unifontsel_internal *fs = (unifontsel_internal *)data;
2436 GtkTreeModel *treemodel;
2437 GtkTreeIter treeiter;
2441 if (fs->inhibit_response) /* we made this change ourselves */
2444 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2447 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
2448 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2449 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
2452 static void size_entry_changed(GtkEditable *ed, gpointer data)
2454 unifontsel_internal *fs = (unifontsel_internal *)data;
2458 if (fs->inhibit_response) /* we made this change ourselves */
2461 text = gtk_entry_get_text(GTK_ENTRY(ed));
2465 assert(fs->selected->size == 0);
2466 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
2470 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
2471 GtkTreeViewColumn *column, gpointer data)
2473 unifontsel_internal *fs = (unifontsel_internal *)data;
2475 int minval, newsize;
2476 fontinfo *info, *newinfo;
2479 if (fs->inhibit_response) /* we made this change ourselves */
2482 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
2483 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
2484 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2487 struct fontinfo_realname_find f;
2489 newname = info->fontclass->canonify_fontname
2490 (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
2492 f.realname = newname;
2494 newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2498 return; /* font name not in our index */
2499 if (newinfo == info)
2500 return; /* didn't change under canonification => not an alias */
2501 unifontsel_select_font(fs, newinfo,
2502 newinfo->size ? newinfo->size : newsize,
2507 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
2510 unifontsel_internal *fs = (unifontsel_internal *)data;
2512 if (fs->preview_pixmap) {
2513 gdk_draw_pixmap(widget->window,
2514 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
2516 event->area.x, event->area.y,
2517 event->area.x, event->area.y,
2518 event->area.width, event->area.height);
2523 static gint unifontsel_configure_area(GtkWidget *widget,
2524 GdkEventConfigure *event, gpointer data)
2526 unifontsel_internal *fs = (unifontsel_internal *)data;
2527 int ox, oy, nx, ny, x, y;
2530 * Enlarge the pixmap, but never shrink it.
2532 ox = fs->preview_width;
2533 oy = fs->preview_height;
2536 if (x > ox || y > oy) {
2537 if (fs->preview_pixmap)
2538 gdk_pixmap_unref(fs->preview_pixmap);
2540 nx = (x > ox ? x : ox);
2541 ny = (y > oy ? y : oy);
2542 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
2543 fs->preview_width = nx;
2544 fs->preview_height = ny;
2546 unifontsel_draw_preview_text(fs);
2549 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2554 unifontsel *unifontsel_new(const char *wintitle)
2556 unifontsel_internal *fs = snew(unifontsel_internal);
2557 GtkWidget *table, *label, *w, *ww, *scroll;
2558 GtkListStore *model;
2559 GtkTreeViewColumn *column;
2560 int lists_height, preview_height, font_width, style_width, size_width;
2563 fs->inhibit_response = FALSE;
2564 fs->selected = NULL;
2568 * Invent some magic size constants.
2571 label = gtk_label_new("Quite Long Font Name (Foundry)");
2572 gtk_widget_size_request(label, &req);
2573 font_width = req.width;
2574 lists_height = 14 * req.height;
2575 preview_height = 5 * req.height;
2576 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2577 gtk_widget_size_request(label, &req);
2578 style_width = req.width;
2579 gtk_label_set_text(GTK_LABEL(label), "48000");
2580 gtk_widget_size_request(label, &req);
2581 size_width = req.width;
2582 #if GTK_CHECK_VERSION(2,10,0)
2583 g_object_ref_sink(label);
2584 g_object_unref(label);
2586 gtk_object_sink(GTK_OBJECT(label));
2591 * Create the dialog box and initialise the user-visible
2592 * fields in the returned structure.
2594 fs->u.user_data = NULL;
2595 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2596 gtk_window_set_title(fs->u.window, wintitle);
2597 fs->u.cancel_button = gtk_dialog_add_button
2598 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2599 fs->u.ok_button = gtk_dialog_add_button
2600 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2601 gtk_widget_grab_default(fs->u.ok_button);
2604 * Now set up the internal fields, including in particular all
2605 * the controls that actually allow the user to select fonts.
2607 table = gtk_table_new(8, 3, FALSE);
2608 gtk_widget_show(table);
2609 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2610 #if GTK_CHECK_VERSION(2,4,0)
2611 /* GtkAlignment seems to be the simplest way to put padding round things */
2612 w = gtk_alignment_new(0, 0, 1, 1);
2613 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2614 gtk_container_add(GTK_CONTAINER(w), table);
2619 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2622 label = gtk_label_new_with_mnemonic("_Font:");
2623 gtk_widget_show(label);
2624 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2625 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2628 * The Font list box displays only a string, but additionally
2629 * stores two integers which give the limits within the
2630 * tree234 of the font entries covered by this list entry.
2632 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2633 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2634 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2635 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2637 column = gtk_tree_view_column_new_with_attributes
2638 ("Font", gtk_cell_renderer_text_new(),
2639 "text", 0, (char *)NULL);
2640 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2641 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2642 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2643 "changed", G_CALLBACK(family_changed), fs);
2644 g_signal_connect(G_OBJECT(w), "row-activated",
2645 G_CALLBACK(alias_resolve), fs);
2647 scroll = gtk_scrolled_window_new(NULL, NULL);
2648 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2650 gtk_container_add(GTK_CONTAINER(scroll), w);
2651 gtk_widget_show(scroll);
2652 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2653 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2654 gtk_widget_set_size_request(scroll, font_width, lists_height);
2655 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2656 GTK_EXPAND | GTK_FILL, 0, 0);
2657 fs->family_model = model;
2658 fs->family_list = w;
2660 label = gtk_label_new_with_mnemonic("_Style:");
2661 gtk_widget_show(label);
2662 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2663 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2666 * The Style list box can contain insensitive elements
2667 * (character set headings for server-side fonts), so we add
2668 * an extra column to the list store to hold that information.
2670 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2672 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2673 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2674 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2676 column = gtk_tree_view_column_new_with_attributes
2677 ("Style", gtk_cell_renderer_text_new(),
2678 "text", 0, "sensitive", 3, (char *)NULL);
2679 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2680 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2681 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2682 "changed", G_CALLBACK(style_changed), fs);
2684 scroll = gtk_scrolled_window_new(NULL, NULL);
2685 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2687 gtk_container_add(GTK_CONTAINER(scroll), w);
2688 gtk_widget_show(scroll);
2689 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2690 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2691 gtk_widget_set_size_request(scroll, style_width, lists_height);
2692 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2693 GTK_EXPAND | GTK_FILL, 0, 0);
2694 fs->style_model = model;
2697 label = gtk_label_new_with_mnemonic("Si_ze:");
2698 gtk_widget_show(label);
2699 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2700 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2703 * The Size label attaches primarily to a text input box so
2704 * that the user can select a size of their choice. The list
2705 * of available sizes is secondary.
2707 fs->size_entry = w = gtk_entry_new();
2708 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2709 gtk_widget_set_size_request(w, size_width, -1);
2711 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2712 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2715 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2716 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2717 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2719 column = gtk_tree_view_column_new_with_attributes
2720 ("Size", gtk_cell_renderer_text_new(),
2721 "text", 0, (char *)NULL);
2722 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2723 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2724 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2725 "changed", G_CALLBACK(size_changed), fs);
2727 scroll = gtk_scrolled_window_new(NULL, NULL);
2728 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2730 gtk_container_add(GTK_CONTAINER(scroll), w);
2731 gtk_widget_show(scroll);
2732 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2733 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2734 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2735 GTK_EXPAND | GTK_FILL, 0, 0);
2736 fs->size_model = model;
2742 fs->preview_area = gtk_drawing_area_new();
2743 fs->preview_pixmap = NULL;
2744 fs->preview_width = 0;
2745 fs->preview_height = 0;
2746 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2747 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2748 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2749 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2751 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2753 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2754 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2755 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2756 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2757 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2758 gtk_widget_show(fs->preview_area);
2759 ww = fs->preview_area;
2760 w = gtk_frame_new(NULL);
2761 gtk_container_add(GTK_CONTAINER(w), ww);
2763 #if GTK_CHECK_VERSION(2,4,0)
2765 /* GtkAlignment seems to be the simplest way to put padding round things */
2766 w = gtk_alignment_new(0, 0, 1, 1);
2767 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2768 gtk_container_add(GTK_CONTAINER(w), ww);
2772 w = gtk_frame_new("Preview of font");
2773 gtk_container_add(GTK_CONTAINER(w), ww);
2775 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2776 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2779 w = gtk_check_button_new_with_label("Show client-side fonts");
2780 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2781 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2782 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2783 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2785 fs->filter_buttons[i++] = w;
2786 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2787 w = gtk_check_button_new_with_label("Show server-side fonts");
2788 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2789 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2790 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2791 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2793 fs->filter_buttons[i++] = w;
2794 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2795 w = gtk_check_button_new_with_label("Show server-side font aliases");
2796 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2797 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2798 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2799 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2801 fs->filter_buttons[i++] = w;
2802 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2803 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2804 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2805 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2806 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2807 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2809 fs->filter_buttons[i++] = w;
2810 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2812 assert(i == lenof(fs->filter_buttons));
2813 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
2814 FONTFLAG_SERVERALIAS;
2815 unifontsel_set_filter_buttons(fs);
2818 * Go and find all the font names, and set up our master font
2821 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2822 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2823 for (i = 0; i < lenof(unifont_types); i++)
2824 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2825 unifontsel_add_entry, fs);
2828 * And set up the initial font names list.
2830 unifontsel_setup_familylist(fs);
2832 fs->selsize = fs->intendedsize = 13; /* random default */
2833 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2835 return (unifontsel *)fs;
2838 void unifontsel_destroy(unifontsel *fontsel)
2840 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2843 if (fs->preview_pixmap)
2844 gdk_pixmap_unref(fs->preview_pixmap);
2846 freetree234(fs->fonts_by_selorder);
2847 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2849 freetree234(fs->fonts_by_realname);
2851 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2855 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2857 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2858 int i, start, end, size, flags;
2859 const char *fontname2 = NULL;
2863 * Provide a default if given an empty or null font name.
2865 if (!fontname || !*fontname)
2866 fontname = "server:fixed";
2869 * Call the canonify_fontname function.
2871 fontname = unifont_do_prefix(fontname, &start, &end);
2872 for (i = start; i < end; i++) {
2873 fontname2 = unifont_types[i]->canonify_fontname
2874 (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
2879 return; /* font name not recognised */
2882 * Now look up the canonified font name in our index.
2885 struct fontinfo_realname_find f;
2886 f.realname = fontname2;
2888 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2892 * If we've found the font, and its size field is either
2893 * correct or zero (the latter indicating a scalable font),
2894 * then we're done. Otherwise, try looking up the original
2895 * font name instead.
2897 if (!info || (info->size != size && info->size != 0)) {
2898 struct fontinfo_realname_find f;
2899 f.realname = fontname;
2902 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2903 if (!info || info->size != size)
2904 return; /* font name not in our index */
2908 * Now we've got a fontinfo structure and a font size, so we
2909 * know everything we need to fill in all the fields in the
2912 unifontsel_select_font(fs, info, size, 0, TRUE);
2915 char *unifontsel_get_name(unifontsel *fontsel)
2917 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2923 if (fs->selected->size == 0) {
2924 name = fs->selected->fontclass->scale_fontname
2925 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2927 char *ret = dupcat(fs->selected->fontclass->prefix, ":",
2934 return dupcat(fs->selected->fontclass->prefix, ":",
2935 fs->selected->realname, NULL);
2938 #endif /* GTK_CHECK_VERSION(2,0,0) */