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.
45 * Ad-hoc vtable mechanism to allow font structures to be
48 * Any instance of `unifont' used in the vtable functions will
49 * actually be the first element of a larger structure containing
50 * data specific to the subtype. This is permitted by the ISO C
51 * provision that one may safely cast between a pointer to a
52 * structure and a pointer to its first element.
55 #define FONTFLAG_CLIENTSIDE 0x0001
56 #define FONTFLAG_SERVERSIDE 0x0002
57 #define FONTFLAG_SERVERALIAS 0x0004
58 #define FONTFLAG_NONMONOSPACED 0x0008
60 #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
62 typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
63 const char *family, const char *charset,
64 const char *style, const char *stylekey,
66 const struct unifont_vtable *fontclass);
68 struct unifont_vtable {
70 * `Methods' of the `class'.
72 unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
73 int shadowoffset, int shadowalways);
74 unifont *(*create_fallback)(GtkWidget *widget, int height, int wide,
75 int bold, int shadowoffset, int shadowalways);
76 void (*destroy)(unifont *font);
77 int (*has_glyph)(unifont *font, wchar_t glyph);
78 void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
79 int x, int y, const wchar_t *string, int len, int wide,
80 int bold, int cellwidth);
81 void (*enum_fonts)(GtkWidget *widget,
82 fontsel_add_entry callback, void *callback_ctx);
83 char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
84 int *flags, int resolve_aliases);
85 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
88 * `Static data members' of the `class'.
93 /* ----------------------------------------------------------------------
94 * X11 font implementation, directly using Xlib calls.
97 static int x11font_has_glyph(unifont *font, wchar_t glyph);
98 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
99 int x, int y, const wchar_t *string, int len,
100 int wide, int bold, int cellwidth);
101 static unifont *x11font_create(GtkWidget *widget, const char *name,
103 int shadowoffset, int shadowalways);
104 static void x11font_destroy(unifont *font);
105 static void x11font_enum_fonts(GtkWidget *widget,
106 fontsel_add_entry callback, void *callback_ctx);
107 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
108 int *size, int *flags,
109 int resolve_aliases);
110 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
116 * Actual font objects. We store a number of these, for
117 * automatically guessed bold and wide variants.
119 * The parallel array `allocated' indicates whether we've
120 * tried to fetch a subfont already (thus distinguishing NULL
121 * because we haven't tried yet from NULL because we tried and
122 * failed, so that we don't keep trying and failing
125 XFontStruct *fonts[4];
128 * `sixteen_bit' is true iff the font object is indexed by
129 * values larger than a byte. That is, this flag tells us
130 * whether we use XDrawString or XDrawString16, etc.
134 * `variable' is true iff the font is non-fixed-pitch. This
135 * enables some code which takes greater care over character
136 * positioning during text drawing.
140 * real_charset is the charset used when translating text into the
141 * font's internal encoding inside draw_text(). This need not be
142 * the same as the public_charset provided to the client; for
143 * example, public_charset might be CS_ISO8859_1 while
144 * real_charset is CS_ISO8859_1_X11.
148 * Data passed in to unifont_create().
150 int wide, bold, shadowoffset, shadowalways;
153 static const struct unifont_vtable x11font_vtable = {
155 NULL, /* no fallback fonts in X11 */
160 x11font_canonify_fontname,
161 x11font_scale_fontname,
165 static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide)
167 Display *disp = GDK_DISPLAY();
168 Atom fontprop = XInternAtom(disp, "FONT", False);
170 if (XGetFontProperty(xfs, fontprop, &ret)) {
171 char *name = XGetAtomName(disp, (Atom)ret);
172 if (name && name[0] == '-') {
174 char *dupname, *extrafree = NULL, *ret;
178 p = q = dupname = dupstr(name); /* skip initial minus */
181 while (*p && nstr < lenof(strings)) {
184 strings[nstr++] = p+1;
189 if (nstr < lenof(strings))
190 return NULL; /* XLFD was malformed */
196 /* 4 is `wideness', which obviously may have changed. */
197 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
198 strings[4] = strings[5] = "*";
199 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
202 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
203 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
204 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
205 "-", strings[ 9], "-", strings[10], "-", strings[11],
206 "-", strings[12], NULL);
216 static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
222 return XTextWidth16(xfs, &space, 1);
224 return XTextWidth(xfs, "0", 1);
228 static int x11_font_has_glyph(XFontStruct *xfs, int byte1, int byte2)
233 * Not to be confused with x11font_has_glyph, which is a method of
234 * the x11font 'class' and hence takes a unifont as argument. This
235 * is the low-level function which grubs about in an actual
236 * XFontStruct to see if a given glyph exists.
238 * We must do this ourselves rather than letting Xlib's
239 * XTextExtents16 do the job, because XTextExtents will helpfully
240 * substitute the font's default_char for any missing glyph and
241 * not tell us it did so, which precisely won't help us find out
242 * which glyphs _are_ missing.
244 * The man page for XQueryFont is rather confusing about how the
245 * per_char array in the XFontStruct is laid out, because it gives
246 * formulae for determining the two-byte X character code _from_
247 * an index into the per_char array. Going the other way, it's
250 * The valid character codes have byte1 between min_byte1 and
251 * max_byte1 inclusive, and byte2 between min_char_or_byte2 and
252 * max_char_or_byte2 inclusive. This gives a rectangle of size
253 * (max_byte2-min_byte1+1) by
254 * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the
255 * rectangle encoded in the per_char array. Hence, given a
256 * character code which is valid in the sense that it falls
257 * somewhere in that rectangle, its index in per_char is given by
260 * x = byte2 - min_char_or_byte2
261 * y = byte1 - min_byte1
262 * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x
264 * If min_byte1 and min_byte2 are both zero, that's a special case
265 * which can be treated as if min_byte2 was 1 instead, i.e. the
266 * per_char array just runs from min_char_or_byte2 to
267 * max_char_or_byte2 inclusive, and byte1 should always be zero.
270 if (byte2 < xfs->min_char_or_byte2 || byte2 > xfs->max_char_or_byte2)
273 if (xfs->min_byte1 == 0 && xfs->max_byte1 == 0) {
274 index = byte2 - xfs->min_char_or_byte2;
276 if (byte1 < xfs->min_byte1 || byte1 > xfs->max_byte1)
278 index = ((byte2 - xfs->min_char_or_byte2) +
279 ((byte1 - xfs->min_byte1) *
280 (xfs->max_char_or_byte2 - xfs->min_char_or_byte2 + 1)));
283 if (!xfs->per_char) /* per_char NULL => everything in range exists */
286 return (xfs->per_char[index].ascent + xfs->per_char[index].descent > 0 ||
287 xfs->per_char[index].width > 0);
290 static unifont *x11font_create(GtkWidget *widget, const char *name,
292 int shadowoffset, int shadowalways)
294 struct x11font *xfont;
296 Display *disp = GDK_DISPLAY();
297 Atom charset_registry, charset_encoding, spacing;
298 unsigned long registry_ret, encoding_ret, spacing_ret;
299 int pubcs, realcs, sixteen_bit, variable;
302 xfs = XLoadQueryFont(disp, name);
306 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
307 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
309 pubcs = realcs = CS_NONE;
313 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
314 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
316 reg = XGetAtomName(disp, (Atom)registry_ret);
317 enc = XGetAtomName(disp, (Atom)encoding_ret);
319 char *encoding = dupcat(reg, "-", enc, NULL);
320 pubcs = realcs = charset_from_xenc(encoding);
323 * iso10646-1 is the only wide font encoding we
324 * support. In this case, we expect clients to give us
325 * UTF-8, which this module must internally convert
326 * into 16-bit Unicode.
328 if (!strcasecmp(encoding, "iso10646-1")) {
330 pubcs = realcs = CS_UTF8;
334 * Hack for X line-drawing characters: if the primary font
335 * is encoded as ISO-8859-1, and has valid glyphs in the
336 * low character positions, it is assumed that those
337 * glyphs are the VT100 line-drawing character set.
339 if (pubcs == CS_ISO8859_1) {
341 for (ch = 1; ch < 32; ch++)
342 if (!x11_font_has_glyph(xfs, 0, ch))
345 realcs = CS_ISO8859_1_X11;
352 spacing = XInternAtom(disp, "SPACING", False);
353 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
355 spc = XGetAtomName(disp, (Atom)spacing_ret);
357 if (spc && strchr("CcMm", spc[0]))
361 xfont = snew(struct x11font);
362 xfont->u.vt = &x11font_vtable;
363 xfont->u.width = x11_font_width(xfs, sixteen_bit);
364 xfont->u.ascent = xfs->ascent;
365 xfont->u.descent = xfs->descent;
366 xfont->u.height = xfont->u.ascent + xfont->u.descent;
367 xfont->u.public_charset = pubcs;
368 xfont->u.want_fallback = TRUE;
369 xfont->real_charset = realcs;
370 xfont->fonts[0] = xfs;
371 xfont->allocated[0] = TRUE;
372 xfont->sixteen_bit = sixteen_bit;
373 xfont->variable = variable;
376 xfont->shadowoffset = shadowoffset;
377 xfont->shadowalways = shadowalways;
379 for (i = 1; i < lenof(xfont->fonts); i++) {
380 xfont->fonts[i] = NULL;
381 xfont->allocated[i] = FALSE;
384 return (unifont *)xfont;
387 static void x11font_destroy(unifont *font)
389 Display *disp = GDK_DISPLAY();
390 struct x11font *xfont = (struct x11font *)font;
393 for (i = 0; i < lenof(xfont->fonts); i++)
395 XFreeFont(disp, xfont->fonts[i]);
399 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
401 Display *disp = GDK_DISPLAY();
402 char *derived_name = x11_guess_derived_font_name
403 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
404 xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name);
405 xfont->allocated[sfid] = TRUE;
407 /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
410 static int x11font_has_glyph(unifont *font, wchar_t glyph)
412 struct x11font *xfont = (struct x11font *)font;
414 if (xfont->sixteen_bit) {
416 * This X font has 16-bit character indices, which means
417 * we can directly use our Unicode input value.
419 return x11_font_has_glyph(xfont->fonts[0], glyph >> 8, glyph & 0xFF);
422 * This X font has 8-bit indices, so we must convert to the
423 * appropriate character set.
426 int sblen = wc_to_mb(xfont->real_charset, 0, &glyph, 1,
427 sbstring, 2, "", NULL, NULL);
429 return FALSE; /* not even in the charset */
431 return x11_font_has_glyph(xfont->fonts[0], 0,
432 (unsigned char)sbstring[0]);
436 #if !GTK_CHECK_VERSION(2,0,0)
437 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
440 static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs,
442 const XChar2b *string, int nchars,
444 int fontvariable, int cellwidth)
446 Display *disp = GDK_DISPLAY();
447 int step, nsteps, centre;
451 * In a variable-pitch font, we draw one character at a
452 * time, and centre it in the character cell.
459 * In a fixed-pitch font, we can draw the whole lot in one go.
466 while (nsteps-- > 0) {
469 X += (cellwidth - XTextWidth16(xfs, string, step)) / 2;
471 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
474 XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
475 X + shadowoffset, y, string, step);
482 static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs,
484 const char *string, int nchars,
486 int fontvariable, int cellwidth)
488 Display *disp = GDK_DISPLAY();
489 int step, nsteps, centre;
493 * In a variable-pitch font, we draw one character at a
494 * time, and centre it in the character cell.
501 * In a fixed-pitch font, we can draw the whole lot in one go.
508 while (nsteps-- > 0) {
511 X += (cellwidth - XTextWidth(xfs, string, step)) / 2;
513 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
516 XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
517 X + shadowoffset, y, string, step);
524 static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font,
525 int x, int y, const wchar_t *string, int len,
526 int wide, int bold, int cellwidth)
528 Display *disp = GDK_DISPLAY();
529 struct x11font *xfont = (struct x11font *)font;
530 GC gc = GDK_GC_XGC(gdkgc);
532 int shadowoffset = 0;
533 int mult = (wide ? 2 : 1);
539 * Decide which subfont we're using, and whether we have to
542 if (xfont->shadowalways && bold) {
543 shadowoffset = xfont->shadowoffset;
546 sfid = 2 * wide + bold;
547 if (!xfont->allocated[sfid])
548 x11_alloc_subfont(xfont, sfid);
549 if (bold && !xfont->fonts[sfid]) {
551 shadowoffset = xfont->shadowoffset;
552 sfid = 2 * wide + bold;
553 if (!xfont->allocated[sfid])
554 x11_alloc_subfont(xfont, sfid);
557 if (!xfont->fonts[sfid])
558 return; /* we've tried our best, but no luck */
560 XSetFont(disp, gc, xfont->fonts[sfid]->fid);
562 if (xfont->sixteen_bit) {
564 * This X font has 16-bit character indices, which means
565 * we can directly use our Unicode input string.
570 xcs = snewn(len, XChar2b);
571 for (i = 0; i < len; i++) {
572 xcs[i].byte1 = string[i] >> 8;
573 xcs[i].byte2 = string[i];
576 x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y,
577 xcs, len, shadowoffset,
578 xfont->variable, cellwidth * mult);
582 * This X font has 8-bit indices, so we must convert to the
583 * appropriate character set.
585 char *sbstring = snewn(len+1, char);
586 int sblen = wc_to_mb(xfont->real_charset, 0, string, len,
587 sbstring, len+1, ".", NULL, NULL);
588 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
589 sbstring, sblen, shadowoffset,
590 xfont->variable, cellwidth * mult);
595 static void x11font_enum_fonts(GtkWidget *widget,
596 fontsel_add_entry callback, void *callback_ctx)
600 int nnames, i, max, tmpsize;
604 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
606 XFreeFontNames(fontnames);
614 for (i = 0; i < nnames; i++) {
615 if (fontnames[i][0] == '-') {
617 * Dismember an XLFD and convert it into the format
618 * we'll be using in the font selector.
620 char *components[14];
621 char *p, *font, *style, *stylekey, *charset;
622 int j, weightkey, slantkey, setwidthkey;
623 int thistmpsize, fontsize, flags;
625 thistmpsize = 4 * strlen(fontnames[i]) + 256;
626 if (tmpsize < thistmpsize) {
627 tmpsize = thistmpsize;
628 tmp = sresize(tmp, tmpsize, char);
630 strcpy(tmp, fontnames[i]);
633 for (j = 0; j < 14; j++) {
637 while (*p && *p != '-')
643 * Font name is made up of fields 0 and 1, in reverse
644 * order with parentheses. (This is what the GTK 1.2 X
645 * font selector does, and it seems to come out
646 * looking reasonably sensible.)
649 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
652 * Charset is made up of fields 12 and 13.
655 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
658 * Style is a mixture of quite a lot of the fields,
659 * with some strange formatting.
662 p += sprintf(p, "%s", components[2][0] ? components[2] :
664 if (!g_strcasecmp(components[3], "i"))
665 p += sprintf(p, " italic");
666 else if (!g_strcasecmp(components[3], "o"))
667 p += sprintf(p, " oblique");
668 else if (!g_strcasecmp(components[3], "ri"))
669 p += sprintf(p, " reverse italic");
670 else if (!g_strcasecmp(components[3], "ro"))
671 p += sprintf(p, " reverse oblique");
672 else if (!g_strcasecmp(components[3], "ot"))
673 p += sprintf(p, " other-slant");
674 if (components[4][0] && g_strcasecmp(components[4], "normal"))
675 p += sprintf(p, " %s", components[4]);
676 if (!g_strcasecmp(components[10], "m"))
677 p += sprintf(p, " [M]");
678 if (!g_strcasecmp(components[10], "c"))
679 p += sprintf(p, " [C]");
680 if (components[5][0])
681 p += sprintf(p, " %s", components[5]);
684 * Style key is the same stuff as above, but with a
685 * couple of transformations done on it to make it
686 * sort more sensibly.
690 if (!g_strcasecmp(components[2], "medium") ||
691 !g_strcasecmp(components[2], "regular") ||
692 !g_strcasecmp(components[2], "normal") ||
693 !g_strcasecmp(components[2], "book"))
695 else if (!g_strncasecmp(components[2], "demi", 4) ||
696 !g_strncasecmp(components[2], "semi", 4))
700 if (!g_strcasecmp(components[3], "r"))
702 else if (!g_strncasecmp(components[3], "r", 1))
706 if (!g_strcasecmp(components[4], "normal"))
711 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
713 (int)strlen(components[2]), components[2],
715 (int)strlen(components[3]), components[3],
717 (int)strlen(components[4]), components[4],
718 (int)strlen(components[10]), components[10],
719 (int)strlen(components[5]), components[5]);
721 assert(p - tmp < thistmpsize);
724 * Size is in pixels, for our application, so we
725 * derive it directly from the pixel size field,
728 fontsize = atoi(components[6]);
731 * Flags: we need to know whether this is a monospaced
732 * font, which we do by examining the spacing field
735 flags = FONTFLAG_SERVERSIDE;
736 if (!strchr("CcMm", components[10][0]))
737 flags |= FONTFLAG_NONMONOSPACED;
740 * Not sure why, but sometimes the X server will
741 * deliver dummy font types in which fontsize comes
742 * out as zero. Filter those out.
745 callback(callback_ctx, fontnames[i], font, charset,
746 style, stylekey, fontsize, flags, &x11font_vtable);
749 * This isn't an XLFD, so it must be an alias.
750 * Transmit it with mostly null data.
752 * It would be nice to work out if it's monospaced
753 * here, but at the moment I can't see that being
754 * anything but computationally hideous. Ah well.
756 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
757 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
760 XFreeFontNames(fontnames);
763 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
764 int *size, int *flags,
768 * When given an X11 font name to try to make sense of for a
769 * font selector, we must attempt to load it (to see if it
770 * exists), and then canonify it by extracting its FONT
771 * property, which should give its full XLFD even if what we
772 * originally had was a wildcard.
774 * However, we must carefully avoid canonifying font
775 * _aliases_, unless specifically asked to, because the font
776 * selector treats them as worthwhile in their own right.
779 Display *disp = GDK_DISPLAY();
780 Atom fontprop, fontprop2;
783 xfs = XLoadQueryFont(disp, name);
786 return NULL; /* didn't make sense to us, sorry */
788 fontprop = XInternAtom(disp, "FONT", False);
790 if (XGetFontProperty(xfs, fontprop, &ret)) {
791 char *newname = XGetAtomName(disp, (Atom)ret);
793 unsigned long fsize = 12;
795 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
796 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
798 XFreeFont(disp, xfs);
800 if (name[0] == '-' || resolve_aliases)
801 *flags = FONTFLAG_SERVERSIDE;
803 *flags = FONTFLAG_SERVERALIAS;
805 return dupstr(name[0] == '-' || resolve_aliases ?
811 XFreeFont(disp, xfs);
813 return NULL; /* something went wrong */
816 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
819 return NULL; /* shan't */
822 #if GTK_CHECK_VERSION(2,0,0)
824 /* ----------------------------------------------------------------------
825 * Pango font implementation (for GTK 2 only).
828 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
829 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
832 static int pangofont_has_glyph(unifont *font, wchar_t glyph);
833 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
834 int x, int y, const wchar_t *string, int len,
835 int wide, int bold, int cellwidth);
836 static unifont *pangofont_create(GtkWidget *widget, const char *name,
838 int shadowoffset, int shadowalways);
839 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
841 int shadowoffset, int shadowalways);
842 static void pangofont_destroy(unifont *font);
843 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
845 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
846 int *size, int *flags,
847 int resolve_aliases);
848 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
856 PangoFontDescription *desc;
859 * The containing widget.
863 * Data passed in to unifont_create().
865 int bold, shadowoffset, shadowalways;
868 static const struct unifont_vtable pangofont_vtable = {
870 pangofont_create_fallback,
874 pangofont_enum_fonts,
875 pangofont_canonify_fontname,
876 pangofont_scale_fontname,
881 * This function is used to rigorously validate a
882 * PangoFontDescription. Later versions of Pango have a nasty
883 * habit of accepting _any_ old string as input to
884 * pango_font_description_from_string and returning a font
885 * description which can actually be used to display text, even if
886 * they have to do it by falling back to their most default font.
887 * This is doubtless helpful in some situations, but not here,
888 * because we need to know if a Pango font string actually _makes
889 * sense_ in order to fall back to treating it as an X font name
890 * if it doesn't. So we check that the font family is actually one
891 * supported by Pango.
893 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
894 PangoFontDescription *desc)
896 #ifndef PANGO_PRE_1POINT6
899 PangoFontFamily **families;
900 int i, nfamilies, matched;
903 * Ask Pango for a list of font families, and iterate through
904 * them to see if one of them matches the family in the
905 * PangoFontDescription.
907 #ifndef PANGO_PRE_1POINT6
908 map = pango_context_get_font_map(ctx);
911 pango_font_map_list_families(map, &families, &nfamilies);
913 pango_context_list_families(ctx, &families, &nfamilies);
917 for (i = 0; i < nfamilies; i++) {
918 if (!g_strcasecmp(pango_font_family_get_name(families[i]),
919 pango_font_description_get_family(desc))) {
929 static unifont *pangofont_create_internal(GtkWidget *widget,
931 PangoFontDescription *desc,
933 int shadowoffset, int shadowalways)
935 struct pangofont *pfont;
936 #ifndef PANGO_PRE_1POINT6
940 PangoFontMetrics *metrics;
942 #ifndef PANGO_PRE_1POINT6
943 map = pango_context_get_font_map(ctx);
945 pango_font_description_free(desc);
948 fset = pango_font_map_load_fontset(map, ctx, desc,
949 pango_context_get_language(ctx));
951 fset = pango_context_load_fontset(ctx, desc,
952 pango_context_get_language(ctx));
955 pango_font_description_free(desc);
958 metrics = pango_fontset_get_metrics(fset);
960 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
961 pango_font_description_free(desc);
962 g_object_unref(fset);
966 pfont = snew(struct pangofont);
967 pfont->u.vt = &pangofont_vtable;
969 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
970 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
971 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
972 pfont->u.height = pfont->u.ascent + pfont->u.descent;
973 pfont->u.want_fallback = FALSE;
974 /* The Pango API is hardwired to UTF-8 */
975 pfont->u.public_charset = CS_UTF8;
978 pfont->widget = widget;
980 pfont->shadowoffset = shadowoffset;
981 pfont->shadowalways = shadowalways;
983 pango_font_metrics_unref(metrics);
985 return (unifont *)pfont;
988 static unifont *pangofont_create(GtkWidget *widget, const char *name,
990 int shadowoffset, int shadowalways)
993 PangoFontDescription *desc;
995 desc = pango_font_description_from_string(name);
998 ctx = gtk_widget_get_pango_context(widget);
1000 pango_font_description_free(desc);
1003 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1004 pango_font_description_free(desc);
1007 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1008 shadowoffset, shadowalways);
1011 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
1013 int shadowoffset, int shadowalways)
1016 PangoFontDescription *desc;
1018 desc = pango_font_description_from_string("Monospace");
1021 ctx = gtk_widget_get_pango_context(widget);
1023 pango_font_description_free(desc);
1026 pango_font_description_set_absolute_size(desc, height * PANGO_SCALE);
1027 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1028 shadowoffset, shadowalways);
1031 static void pangofont_destroy(unifont *font)
1033 struct pangofont *pfont = (struct pangofont *)font;
1034 pango_font_description_free(pfont->desc);
1035 g_object_unref(pfont->fset);
1039 static int pangofont_has_glyph(unifont *font, wchar_t glyph)
1041 /* Pango implements font fallback, so assume it has everything */
1045 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1046 int x, int y, const wchar_t *string, int len,
1047 int wide, int bold, int cellwidth)
1049 struct pangofont *pfont = (struct pangofont *)font;
1050 PangoLayout *layout;
1051 PangoRectangle rect;
1052 char *utfstring, *utfptr;
1054 int shadowbold = FALSE;
1059 y -= pfont->u.ascent;
1061 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
1062 pango_layout_set_font_description(layout, pfont->desc);
1063 if (bold > pfont->bold) {
1064 if (pfont->shadowalways)
1067 PangoFontDescription *desc2 =
1068 pango_font_description_copy_static(pfont->desc);
1069 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
1070 pango_layout_set_font_description(layout, desc2);
1075 * Pango always expects UTF-8, so convert the input wide character
1078 utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */
1079 utflen = wc_to_mb(CS_UTF8, 0, string, len,
1080 utfstring, len*6+1, ".", NULL, NULL);
1083 while (utflen > 0) {
1087 * We want to display every character from this string in
1088 * the centre of its own character cell. In the worst case,
1089 * this requires a separate text-drawing call for each
1090 * character; but in the common case where the font is
1091 * properly fixed-width, we can draw many characters in one
1092 * go which is much faster.
1094 * This still isn't really ideal. If you look at what
1095 * happens in the X protocol as a result of all of this, you
1096 * find - naturally enough - that each call to
1097 * gdk_draw_layout() generates a separate set of X RENDER
1098 * operations involving creating a picture, setting a clip
1099 * rectangle, doing some drawing and undoing the whole lot.
1100 * In an ideal world, we should _always_ be able to turn the
1101 * contents of this loop into a single RenderCompositeGlyphs
1102 * operation which internally specifies inter-character
1103 * deltas to get the spacing right, which would give us full
1104 * speed _even_ in the worst case of a non-fixed-width font.
1105 * However, Pango's architecture and documentation are so
1106 * unhelpful that I have no idea how if at all to persuade
1111 * Start by extracting a single UTF-8 character from the
1115 while (clen < utflen &&
1116 (unsigned char)utfptr[clen] >= 0x80 &&
1117 (unsigned char)utfptr[clen] < 0xC0)
1122 * If it's a right-to-left character, we must display it on
1123 * its own, to stop Pango helpfully re-reversing our already
1126 if (!is_rtl(string[0])) {
1129 * See if that character has the width we expect.
1131 pango_layout_set_text(layout, utfptr, clen);
1132 pango_layout_get_pixel_extents(layout, NULL, &rect);
1134 if (rect.width == cellwidth) {
1136 * Try extracting more characters, for as long as they
1137 * stay well-behaved.
1139 while (clen < utflen) {
1141 clen++; /* skip UTF-8 introducer byte */
1142 while (clen < utflen &&
1143 (unsigned char)utfptr[clen] >= 0x80 &&
1144 (unsigned char)utfptr[clen] < 0xC0)
1147 pango_layout_set_text(layout, utfptr, clen);
1148 pango_layout_get_pixel_extents(layout, NULL, &rect);
1149 if (rect.width != n * cellwidth) {
1158 pango_layout_set_text(layout, utfptr, clen);
1159 pango_layout_get_pixel_extents(layout, NULL, &rect);
1160 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2,
1161 y + (pfont->u.height - rect.height)/2, layout);
1163 gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
1164 y + (pfont->u.height - rect.height)/2, layout);
1174 g_object_unref(layout);
1178 * Dummy size value to be used when converting a
1179 * PangoFontDescription of a scalable font to a string for
1182 #define PANGO_DUMMY_SIZE 12
1184 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1188 #ifndef PANGO_PRE_1POINT6
1191 PangoFontFamily **families;
1194 ctx = gtk_widget_get_pango_context(widget);
1199 * Ask Pango for a list of font families, and iterate through
1202 #ifndef PANGO_PRE_1POINT6
1203 map = pango_context_get_font_map(ctx);
1206 pango_font_map_list_families(map, &families, &nfamilies);
1208 pango_context_list_families(ctx, &families, &nfamilies);
1210 for (i = 0; i < nfamilies; i++) {
1211 PangoFontFamily *family = families[i];
1212 const char *familyname;
1214 PangoFontFace **faces;
1218 * Set up our flags for this font family, and get the name
1221 flags = FONTFLAG_CLIENTSIDE;
1222 #ifndef PANGO_PRE_1POINT4
1224 * In very early versions of Pango, we can't tell
1225 * monospaced fonts from non-monospaced.
1227 if (!pango_font_family_is_monospace(family))
1228 flags |= FONTFLAG_NONMONOSPACED;
1230 familyname = pango_font_family_get_name(family);
1233 * Go through the available font faces in this family.
1235 pango_font_family_list_faces(family, &faces, &nfaces);
1236 for (j = 0; j < nfaces; j++) {
1237 PangoFontFace *face = faces[j];
1238 PangoFontDescription *desc;
1239 const char *facename;
1241 int k, nsizes, dummysize;
1244 * Get the face name string.
1246 facename = pango_font_face_get_face_name(face);
1249 * Set up a font description with what we've got so
1250 * far. We'll fill in the size field manually and then
1251 * call pango_font_description_to_string() to give the
1252 * full real name of the specific font.
1254 desc = pango_font_face_describe(face);
1257 * See if this font has a list of specific sizes.
1259 #ifndef PANGO_PRE_1POINT4
1260 pango_font_face_list_sizes(face, &sizes, &nsizes);
1263 * In early versions of Pango, that call wasn't
1264 * supported; we just have to assume everything is
1271 * Write a single entry with a dummy size.
1273 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1279 * If so, go through them one by one.
1281 for (k = 0; k < nsizes; k++) {
1285 pango_font_description_set_size(desc, sizes[k]);
1287 fullname = pango_font_description_to_string(desc);
1290 * Construct the sorting key for font styles.
1296 n = pango_font_description_get_weight(desc);
1297 /* Weight: normal, then lighter, then bolder */
1298 if (n <= PANGO_WEIGHT_NORMAL)
1299 n = PANGO_WEIGHT_NORMAL - n;
1300 p += sprintf(p, "%4d", n);
1302 n = pango_font_description_get_style(desc);
1303 p += sprintf(p, " %2d", n);
1305 n = pango_font_description_get_stretch(desc);
1306 /* Stretch: closer to normal sorts earlier */
1307 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1308 (n < PANGO_STRETCH_NORMAL);
1309 p += sprintf(p, " %2d", n);
1311 n = pango_font_description_get_variant(desc);
1312 p += sprintf(p, " %2d", n);
1317 * Got everything. Hand off to the callback.
1318 * (The charset string is NULL, because only
1319 * server-side X fonts use it.)
1321 callback(callback_ctx, fullname, familyname, NULL, facename,
1323 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1324 flags, &pangofont_vtable);
1328 if (sizes != &dummysize)
1331 pango_font_description_free(desc);
1338 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1339 int *size, int *flags,
1340 int resolve_aliases)
1343 * When given a Pango font name to try to make sense of for a
1344 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1345 * extract its original size (in pixels) into the `size' field.
1348 #ifndef PANGO_PRE_1POINT6
1351 PangoFontDescription *desc;
1353 PangoFontMetrics *metrics;
1354 char *newname, *retname;
1356 desc = pango_font_description_from_string(name);
1359 ctx = gtk_widget_get_pango_context(widget);
1361 pango_font_description_free(desc);
1364 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1365 pango_font_description_free(desc);
1368 #ifndef PANGO_PRE_1POINT6
1369 map = pango_context_get_font_map(ctx);
1371 pango_font_description_free(desc);
1374 fset = pango_font_map_load_fontset(map, ctx, desc,
1375 pango_context_get_language(ctx));
1377 fset = pango_context_load_fontset(ctx, desc,
1378 pango_context_get_language(ctx));
1381 pango_font_description_free(desc);
1384 metrics = pango_fontset_get_metrics(fset);
1386 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1387 pango_font_description_free(desc);
1388 g_object_unref(fset);
1392 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1393 *flags = FONTFLAG_CLIENTSIDE;
1394 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1395 newname = pango_font_description_to_string(desc);
1396 retname = dupstr(newname);
1399 pango_font_metrics_unref(metrics);
1400 pango_font_description_free(desc);
1401 g_object_unref(fset);
1406 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1409 PangoFontDescription *desc;
1410 char *newname, *retname;
1412 desc = pango_font_description_from_string(name);
1415 pango_font_description_set_size(desc, size * PANGO_SCALE);
1416 newname = pango_font_description_to_string(desc);
1417 retname = dupstr(newname);
1419 pango_font_description_free(desc);
1424 #endif /* GTK_CHECK_VERSION(2,0,0) */
1426 /* ----------------------------------------------------------------------
1427 * Outermost functions which do the vtable dispatch.
1431 * Complete list of font-type subclasses. Listed in preference
1432 * order for unifont_create(). (That is, in the extremely unlikely
1433 * event that the same font name is valid as both a Pango and an
1434 * X11 font, it will be interpreted as the former in the absence
1435 * of an explicit type-disambiguating prefix.)
1437 * The 'multifont' subclass is omitted here, as discussed above.
1439 static const struct unifont_vtable *unifont_types[] = {
1440 #if GTK_CHECK_VERSION(2,0,0)
1447 * Function which takes a font name and processes the optional
1448 * scheme prefix. Returns the tail of the font name suitable for
1449 * passing to individual font scheme functions, and also provides
1450 * a subrange of the unifont_types[] array above.
1452 * The return values `start' and `end' denote a half-open interval
1453 * in unifont_types[]; that is, the correct way to iterate over
1456 * for (i = start; i < end; i++) {...}
1458 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1460 int colonpos = strcspn(name, ":");
1463 if (name[colonpos]) {
1465 * There's a colon prefix on the font name. Use it to work
1466 * out which subclass to use.
1468 for (i = 0; i < lenof(unifont_types); i++) {
1469 if (strlen(unifont_types[i]->prefix) == colonpos &&
1470 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1473 return name + colonpos + 1;
1477 * None matched, so return an empty scheme list to prevent
1478 * any scheme from being called at all.
1481 return name + colonpos + 1;
1484 * No colon prefix, so just use all the subclasses.
1487 *end = lenof(unifont_types);
1492 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1493 int bold, int shadowoffset, int shadowalways)
1497 name = unifont_do_prefix(name, &start, &end);
1499 for (i = start; i < end; i++) {
1500 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1501 shadowoffset, shadowalways);
1505 return NULL; /* font not found in any scheme */
1508 void unifont_destroy(unifont *font)
1510 font->vt->destroy(font);
1513 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1514 int x, int y, const wchar_t *string, int len,
1515 int wide, int bold, int cellwidth)
1517 font->vt->draw_text(target, gc, font, x, y, string, len,
1518 wide, bold, cellwidth);
1521 /* ----------------------------------------------------------------------
1522 * Multiple-font wrapper. This is a type of unifont which encapsulates
1523 * up to two other unifonts, permitting missing glyphs in the main
1524 * font to be filled in by a fallback font.
1526 * This is a type of unifont just like the previous two, but it has a
1527 * separate constructor which is manually called by the client, so it
1528 * doesn't appear in the list of available font types enumerated by
1529 * unifont_create. This means it's not used by unifontsel either, so
1530 * it doesn't need to support any methods except draw_text and
1534 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1535 int x, int y, const wchar_t *string, int len,
1536 int wide, int bold, int cellwidth);
1537 static void multifont_destroy(unifont *font);
1545 static const struct unifont_vtable multifont_vtable = {
1546 NULL, /* creation is done specially */
1550 multifont_draw_text,
1557 unifont *multifont_create(GtkWidget *widget, const char *name,
1559 int shadowoffset, int shadowalways)
1562 unifont *font, *fallback;
1563 struct multifont *mfont;
1565 font = unifont_create(widget, name, wide, bold,
1566 shadowoffset, shadowalways);
1571 if (font->want_fallback) {
1572 for (i = 0; i < lenof(unifont_types); i++) {
1573 if (unifont_types[i]->create_fallback) {
1574 fallback = unifont_types[i]->create_fallback
1575 (widget, font->height, wide, bold,
1576 shadowoffset, shadowalways);
1584 * Construct our multifont. Public members are all copied from the
1585 * primary font we're wrapping.
1587 mfont = snew(struct multifont);
1588 mfont->u.vt = &multifont_vtable;
1589 mfont->u.width = font->width;
1590 mfont->u.ascent = font->ascent;
1591 mfont->u.descent = font->descent;
1592 mfont->u.height = font->height;
1593 mfont->u.public_charset = font->public_charset;
1594 mfont->u.want_fallback = FALSE; /* shouldn't be needed, but just in case */
1596 mfont->fallback = fallback;
1598 return (unifont *)mfont;
1601 static void multifont_destroy(unifont *font)
1603 struct multifont *mfont = (struct multifont *)font;
1604 unifont_destroy(mfont->main);
1605 if (mfont->fallback)
1606 unifont_destroy(mfont->fallback);
1610 static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1611 int x, int y, const wchar_t *string, int len,
1612 int wide, int bold, int cellwidth)
1614 struct multifont *mfont = (struct multifont *)font;
1619 * Find a maximal sequence of characters which are, or are
1620 * not, supported by our main font.
1622 ok = mfont->main->vt->has_glyph(mfont->main, string[0]);
1625 !mfont->main->vt->has_glyph(mfont->main, string[i]) == !ok;
1631 unifont_draw_text(target, gc, ok ? mfont->main : mfont->fallback,
1632 x, y, string, i, wide, bold, cellwidth);
1639 #if GTK_CHECK_VERSION(2,0,0)
1641 /* ----------------------------------------------------------------------
1642 * Implementation of a unified font selector. Used on GTK 2 only;
1643 * for GTK 1 we still use the standard font selector.
1646 typedef struct fontinfo fontinfo;
1648 typedef struct unifontsel_internal {
1649 /* This must be the structure's first element, for cross-casting */
1651 GtkListStore *family_model, *style_model, *size_model;
1652 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1653 GtkWidget *filter_buttons[4];
1654 GtkWidget *preview_area;
1655 GdkPixmap *preview_pixmap;
1656 int preview_width, preview_height;
1657 GdkColor preview_fg, preview_bg;
1659 tree234 *fonts_by_realname, *fonts_by_selorder;
1661 int selsize, intendedsize;
1662 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1663 } unifontsel_internal;
1666 * The structure held in the tree234s. All the string members are
1667 * part of the same allocated area, so don't need freeing
1672 char *family, *charset, *style, *stylekey;
1675 * Fallback sorting key, to permit multiple identical entries
1676 * to exist in the selorder tree.
1680 * Indices mapping fontinfo structures to indices in the list
1681 * boxes. sizeindex is irrelevant if the font is scalable
1684 int familyindex, styleindex, sizeindex;
1686 * The class of font.
1688 const struct unifont_vtable *fontclass;
1691 struct fontinfo_realname_find {
1692 const char *realname;
1696 static int strnullcasecmp(const char *a, const char *b)
1701 * If exactly one of the inputs is NULL, it compares before
1704 if ((i = (!b) - (!a)) != 0)
1708 * NULL compares equal.
1714 * Otherwise, ordinary strcasecmp.
1716 return g_strcasecmp(a, b);
1719 static int fontinfo_realname_compare(void *av, void *bv)
1721 fontinfo *a = (fontinfo *)av;
1722 fontinfo *b = (fontinfo *)bv;
1725 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1727 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1728 return ((a->flags & FONTFLAG_SORT_MASK) <
1729 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1733 static int fontinfo_realname_find(void *av, void *bv)
1735 struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
1736 fontinfo *b = (fontinfo *)bv;
1739 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
1741 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1742 return ((a->flags & FONTFLAG_SORT_MASK) <
1743 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1747 static int fontinfo_selorder_compare(void *av, void *bv)
1749 fontinfo *a = (fontinfo *)av;
1750 fontinfo *b = (fontinfo *)bv;
1752 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1755 * Font class comes immediately after family, so that fonts
1756 * from different classes with the same family
1758 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
1759 return ((a->flags & FONTFLAG_SORT_MASK) <
1760 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
1761 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1763 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1765 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1767 if (a->size != b->size)
1768 return (a->size < b->size ? -1 : +1);
1769 if (a->index != b->index)
1770 return (a->index < b->index ? -1 : +1);
1774 static void unifontsel_deselect(unifontsel_internal *fs)
1776 fs->selected = NULL;
1777 gtk_list_store_clear(fs->style_model);
1778 gtk_list_store_clear(fs->size_model);
1779 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
1780 gtk_widget_set_sensitive(fs->size_entry, FALSE);
1783 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1786 int i, listindex, minpos = -1, maxpos = -1;
1787 char *currfamily = NULL;
1791 gtk_list_store_clear(fs->family_model);
1795 * Search through the font tree for anything matching our
1796 * current filter criteria. When we find one, add its font
1797 * name to the list box.
1799 for (i = 0 ;; i++) {
1800 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1802 * info may be NULL if we've just run off the end of the
1803 * tree. We must still do a processing pass in that
1804 * situation, in case we had an unfinished font record in
1807 if (info && (info->flags &~ fs->filter_flags)) {
1808 info->familyindex = -1;
1809 continue; /* we're filtering out this font */
1811 if (!info || strnullcasecmp(currfamily, info->family) ||
1812 currflags != (info->flags & FONTFLAG_SORT_MASK)) {
1814 * We've either finished a family, or started a new
1818 gtk_list_store_append(fs->family_model, &iter);
1819 gtk_list_store_set(fs->family_model, &iter,
1820 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1825 currfamily = info->family;
1826 currflags = info->flags & FONTFLAG_SORT_MASK;
1830 break; /* now we're done */
1831 info->familyindex = listindex;
1836 * If we've just filtered out the previously selected font,
1837 * deselect it thoroughly.
1839 if (fs->selected && fs->selected->familyindex < 0)
1840 unifontsel_deselect(fs);
1843 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1847 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1848 char *currcs = NULL, *currstyle = NULL;
1851 gtk_list_store_clear(fs->style_model);
1856 * Search through the font tree for anything matching our
1857 * current filter criteria. When we find one, add its charset
1858 * and/or style name to the list box.
1860 for (i = start; i <= end; i++) {
1864 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1866 * info may be NULL if we've just run off the end of the
1867 * relevant data. We must still do a processing pass in
1868 * that situation, in case we had an unfinished font
1869 * record in progress.
1871 if (info && (info->flags &~ fs->filter_flags)) {
1872 info->styleindex = -1;
1873 continue; /* we're filtering out this font */
1875 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1876 strnullcasecmp(currstyle, info->style)) {
1878 * We've either finished a style/charset, or started a
1883 gtk_list_store_append(fs->style_model, &iter);
1884 gtk_list_store_set(fs->style_model, &iter,
1885 0, currstyle, 1, minpos, 2, maxpos+1,
1891 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1892 gtk_list_store_append(fs->style_model, &iter);
1893 gtk_list_store_set(fs->style_model, &iter,
1894 0, info->charset, 1, -1, 2, -1,
1898 currcs = info->charset;
1899 currstyle = info->style;
1903 break; /* now we're done */
1904 info->styleindex = listindex;
1909 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1911 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1919 gtk_list_store_clear(fs->size_model);
1923 * Search through the font tree for anything matching our
1924 * current filter criteria. When we find one, add its font
1925 * name to the list box.
1927 for (i = start; i < end; i++) {
1928 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1929 if (info->flags &~ fs->filter_flags) {
1930 info->sizeindex = -1;
1931 continue; /* we're filtering out this font */
1934 sprintf(sizetext, "%d", info->size);
1935 info->sizeindex = listindex;
1936 gtk_list_store_append(fs->size_model, &iter);
1937 gtk_list_store_set(fs->size_model, &iter,
1938 0, sizetext, 1, i, 2, info->size, -1);
1946 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1947 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1948 gtk_list_store_append(fs->size_model, &iter);
1949 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1950 2, unifontsel_default_sizes[j], -1);
1957 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
1961 for (i = 0; i < lenof(fs->filter_buttons); i++) {
1962 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
1963 (GTK_OBJECT(fs->filter_buttons[i]),
1965 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
1966 !!(fs->filter_flags & flagbit));
1970 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
1973 char *sizename = NULL;
1974 fontinfo *info = fs->selected;
1977 sizename = info->fontclass->scale_fontname
1978 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
1979 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
1980 sizename ? sizename : info->realname,
1981 FALSE, FALSE, 0, 0);
1985 if (fs->preview_pixmap) {
1986 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
1987 gdk_gc_set_foreground(gc, &fs->preview_bg);
1988 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
1989 fs->preview_width, fs->preview_height);
1990 gdk_gc_set_foreground(gc, &fs->preview_fg);
1993 * The pangram used here is rather carefully
1994 * constructed: it contains a sequence of very narrow
1995 * letters (`jil') and a pair of adjacent very wide
1998 * If the user selects a proportional font, it will be
1999 * coerced into fixed-width character cells when used
2000 * in the actual terminal window. We therefore display
2001 * it the same way in the preview pane, so as to show
2002 * it the way it will actually be displayed - and we
2003 * deliberately pick a pangram which will show the
2004 * resulting miskerning at its worst.
2006 * We aren't trying to sell people these fonts; we're
2007 * trying to let them make an informed choice. Better
2008 * that they find out the problems with using
2009 * proportional fonts in terminal windows here than
2010 * that they go to the effort of selecting their font
2011 * and _then_ realise it was a mistake.
2013 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2015 L"bankrupt jilted showmen quiz convex fogey",
2016 41, FALSE, FALSE, font->width);
2017 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2018 0, font->ascent + font->height,
2019 L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
2020 41, FALSE, FALSE, font->width);
2022 * The ordering of punctuation here is also selected
2023 * with some specific aims in mind. I put ` and '
2024 * together because some software (and people) still
2025 * use them as matched quotes no matter what Unicode
2026 * might say on the matter, so people can quickly
2027 * check whether they look silly in a candidate font.
2028 * The sequence #_@ is there to let people judge the
2029 * suitability of the underscore as an effectively
2030 * alphabetic character (since that's how it's often
2031 * used in practice, at least by programmers).
2033 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
2034 0, font->ascent + font->height * 2,
2035 L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
2036 42, FALSE, FALSE, font->width);
2039 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
2042 info->fontclass->destroy(font);
2047 static void unifontsel_select_font(unifontsel_internal *fs,
2048 fontinfo *info, int size, int leftlist,
2049 int size_is_explicit)
2053 GtkTreePath *treepath;
2056 fs->inhibit_response = TRUE;
2058 fs->selected = info;
2060 if (size_is_explicit)
2061 fs->intendedsize = size;
2063 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
2066 * Find the index of this fontinfo in the selorder list.
2069 findpos234(fs->fonts_by_selorder, info, NULL, &index);
2073 * Adjust the font selector flags and redo the font family
2074 * list box, if necessary.
2076 if (leftlist <= 0 &&
2077 (fs->filter_flags | info->flags) != fs->filter_flags) {
2078 fs->filter_flags |= info->flags;
2079 unifontsel_set_filter_buttons(fs);
2080 unifontsel_setup_familylist(fs);
2084 * Find the appropriate family name and select it in the list.
2086 assert(info->familyindex >= 0);
2087 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
2088 gtk_tree_selection_select_path
2089 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
2091 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
2092 treepath, NULL, FALSE, 0.0, 0.0);
2093 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
2094 gtk_tree_path_free(treepath);
2097 * Now set up the font style list.
2099 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
2100 1, &minval, 2, &maxval, -1);
2102 unifontsel_setup_stylelist(fs, minval, maxval);
2105 * Find the appropriate style name and select it in the list.
2108 assert(info->styleindex >= 0);
2109 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
2110 gtk_tree_selection_select_path
2111 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
2113 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
2114 treepath, NULL, FALSE, 0.0, 0.0);
2115 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
2117 gtk_tree_path_free(treepath);
2120 * And set up the size list.
2122 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
2123 1, &minval, 2, &maxval, -1);
2125 unifontsel_setup_sizelist(fs, minval, maxval);
2128 * Find the appropriate size, and select it in the list.
2131 assert(info->sizeindex >= 0);
2132 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
2133 gtk_tree_selection_select_path
2134 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
2136 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2137 treepath, NULL, FALSE, 0.0, 0.0);
2138 gtk_tree_path_free(treepath);
2142 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
2143 if (unifontsel_default_sizes[j] == size) {
2144 treepath = gtk_tree_path_new_from_indices(j, -1);
2145 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
2146 treepath, NULL, FALSE);
2147 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2148 treepath, NULL, FALSE, 0.0,
2150 gtk_tree_path_free(treepath);
2155 * And set up the font size text entry box.
2159 sprintf(sizetext, "%d", size);
2160 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
2164 unifontsel_setup_sizelist(fs, 0, 0);
2165 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
2169 * Grey out the font size edit box if we're not using a
2172 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
2173 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
2175 unifontsel_draw_preview_text(fs);
2177 fs->inhibit_response = FALSE;
2180 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
2182 unifontsel_internal *fs = (unifontsel_internal *)data;
2183 int newstate = gtk_toggle_button_get_active(tb);
2185 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
2189 newflags = fs->filter_flags | flagbit;
2191 newflags = fs->filter_flags & ~flagbit;
2193 if (fs->filter_flags != newflags) {
2194 fs->filter_flags = newflags;
2195 unifontsel_setup_familylist(fs);
2199 static void unifontsel_add_entry(void *ctx, const char *realfontname,
2200 const char *family, const char *charset,
2201 const char *style, const char *stylekey,
2202 int size, int flags,
2203 const struct unifont_vtable *fontclass)
2205 unifontsel_internal *fs = (unifontsel_internal *)ctx;
2210 totalsize = sizeof(fontinfo) + strlen(realfontname) +
2211 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
2212 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
2213 info = (fontinfo *)smalloc(totalsize);
2214 info->fontclass = fontclass;
2215 p = (char *)info + sizeof(fontinfo);
2217 strcpy(p, realfontname);
2224 info->family = NULL;
2230 info->charset = NULL;
2239 strcpy(p, stylekey);
2242 info->stylekey = NULL;
2243 assert(p - (char *)info <= totalsize);
2245 info->flags = flags;
2246 info->index = count234(fs->fonts_by_selorder);
2249 * It's just conceivable that a misbehaving font enumerator
2250 * might tell us about the same font real name more than once,
2251 * in which case we should silently drop the new one.
2253 if (add234(fs->fonts_by_realname, info) != info) {
2258 * However, we should never get a duplicate key in the
2259 * selorder tree, because the index field carefully
2260 * disambiguates otherwise identical records.
2262 add234(fs->fonts_by_selorder, info);
2265 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
2268 fontinfo info2, *below, *above;
2272 * Copy the info structure. This doesn't copy its dynamic
2273 * string fields, but that's unimportant because all we're
2274 * going to do is to adjust the size field and use it in one
2278 info2.size = fs->intendedsize;
2281 * Search in the tree to find the fontinfo structure which
2282 * best approximates the size the user last requested.
2284 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
2286 above = index234(fs->fonts_by_selorder, pos+1);
2289 * See if we've found it exactly, which is an easy special
2290 * case. If we have, it'll be in `below' and not `above',
2291 * because we did a REL234_LE rather than REL234_LT search.
2293 if (!fontinfo_selorder_compare(&info2, below))
2297 * Now we've either found two suitable fonts, one smaller and
2298 * one larger, or we're at one or other extreme end of the
2299 * scale. Find out which, by NULLing out either of below and
2300 * above if it differs from this one in any respect but size
2301 * (and the disambiguating index field). Bear in mind, also,
2302 * that either one might _already_ be NULL if we're at the
2303 * extreme ends of the font list.
2306 info2.size = below->size;
2307 info2.index = below->index;
2308 if (fontinfo_selorder_compare(&info2, below))
2312 info2.size = above->size;
2313 info2.index = above->index;
2314 if (fontinfo_selorder_compare(&info2, above))
2319 * Now return whichever of above and below is non-NULL, if
2320 * that's unambiguous.
2328 * And now we really do have to make a choice about whether to
2329 * round up or down. We'll do it by rounding to nearest,
2330 * breaking ties by rounding up.
2332 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
2338 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
2340 unifontsel_internal *fs = (unifontsel_internal *)data;
2341 GtkTreeModel *treemodel;
2342 GtkTreeIter treeiter;
2346 if (fs->inhibit_response) /* we made this change ourselves */
2349 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2352 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2353 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2354 info = update_for_intended_size(fs, info);
2356 return; /* _shouldn't_ happen unless font list is completely funted */
2358 fs->selsize = fs->intendedsize; /* font is scalable */
2359 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2363 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
2365 unifontsel_internal *fs = (unifontsel_internal *)data;
2366 GtkTreeModel *treemodel;
2367 GtkTreeIter treeiter;
2371 if (fs->inhibit_response) /* we made this change ourselves */
2374 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2377 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
2379 return; /* somehow a charset heading got clicked */
2380 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2381 info = update_for_intended_size(fs, info);
2383 return; /* _shouldn't_ happen unless font list is completely funted */
2385 fs->selsize = fs->intendedsize; /* font is scalable */
2386 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2390 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
2392 unifontsel_internal *fs = (unifontsel_internal *)data;
2393 GtkTreeModel *treemodel;
2394 GtkTreeIter treeiter;
2398 if (fs->inhibit_response) /* we made this change ourselves */
2401 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
2404 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
2405 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2406 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
2409 static void size_entry_changed(GtkEditable *ed, gpointer data)
2411 unifontsel_internal *fs = (unifontsel_internal *)data;
2415 if (fs->inhibit_response) /* we made this change ourselves */
2418 text = gtk_entry_get_text(GTK_ENTRY(ed));
2422 assert(fs->selected->size == 0);
2423 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
2427 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
2428 GtkTreeViewColumn *column, gpointer data)
2430 unifontsel_internal *fs = (unifontsel_internal *)data;
2432 int minval, newsize;
2433 fontinfo *info, *newinfo;
2436 if (fs->inhibit_response) /* we made this change ourselves */
2439 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
2440 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
2441 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2444 struct fontinfo_realname_find f;
2446 newname = info->fontclass->canonify_fontname
2447 (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
2449 f.realname = newname;
2451 newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2455 return; /* font name not in our index */
2456 if (newinfo == info)
2457 return; /* didn't change under canonification => not an alias */
2458 unifontsel_select_font(fs, newinfo,
2459 newinfo->size ? newinfo->size : newsize,
2464 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
2467 unifontsel_internal *fs = (unifontsel_internal *)data;
2469 if (fs->preview_pixmap) {
2470 gdk_draw_pixmap(widget->window,
2471 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
2473 event->area.x, event->area.y,
2474 event->area.x, event->area.y,
2475 event->area.width, event->area.height);
2480 static gint unifontsel_configure_area(GtkWidget *widget,
2481 GdkEventConfigure *event, gpointer data)
2483 unifontsel_internal *fs = (unifontsel_internal *)data;
2484 int ox, oy, nx, ny, x, y;
2487 * Enlarge the pixmap, but never shrink it.
2489 ox = fs->preview_width;
2490 oy = fs->preview_height;
2493 if (x > ox || y > oy) {
2494 if (fs->preview_pixmap)
2495 gdk_pixmap_unref(fs->preview_pixmap);
2497 nx = (x > ox ? x : ox);
2498 ny = (y > oy ? y : oy);
2499 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
2500 fs->preview_width = nx;
2501 fs->preview_height = ny;
2503 unifontsel_draw_preview_text(fs);
2506 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2511 unifontsel *unifontsel_new(const char *wintitle)
2513 unifontsel_internal *fs = snew(unifontsel_internal);
2514 GtkWidget *table, *label, *w, *ww, *scroll;
2515 GtkListStore *model;
2516 GtkTreeViewColumn *column;
2517 int lists_height, preview_height, font_width, style_width, size_width;
2520 fs->inhibit_response = FALSE;
2521 fs->selected = NULL;
2525 * Invent some magic size constants.
2528 label = gtk_label_new("Quite Long Font Name (Foundry)");
2529 gtk_widget_size_request(label, &req);
2530 font_width = req.width;
2531 lists_height = 14 * req.height;
2532 preview_height = 5 * req.height;
2533 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2534 gtk_widget_size_request(label, &req);
2535 style_width = req.width;
2536 gtk_label_set_text(GTK_LABEL(label), "48000");
2537 gtk_widget_size_request(label, &req);
2538 size_width = req.width;
2539 #if GTK_CHECK_VERSION(2,10,0)
2540 g_object_ref_sink(label);
2541 g_object_unref(label);
2543 gtk_object_sink(GTK_OBJECT(label));
2548 * Create the dialog box and initialise the user-visible
2549 * fields in the returned structure.
2551 fs->u.user_data = NULL;
2552 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2553 gtk_window_set_title(fs->u.window, wintitle);
2554 fs->u.cancel_button = gtk_dialog_add_button
2555 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2556 fs->u.ok_button = gtk_dialog_add_button
2557 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2558 gtk_widget_grab_default(fs->u.ok_button);
2561 * Now set up the internal fields, including in particular all
2562 * the controls that actually allow the user to select fonts.
2564 table = gtk_table_new(8, 3, FALSE);
2565 gtk_widget_show(table);
2566 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2567 #if GTK_CHECK_VERSION(2,4,0)
2568 /* GtkAlignment seems to be the simplest way to put padding round things */
2569 w = gtk_alignment_new(0, 0, 1, 1);
2570 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2571 gtk_container_add(GTK_CONTAINER(w), table);
2576 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2579 label = gtk_label_new_with_mnemonic("_Font:");
2580 gtk_widget_show(label);
2581 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2582 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2585 * The Font list box displays only a string, but additionally
2586 * stores two integers which give the limits within the
2587 * tree234 of the font entries covered by this list entry.
2589 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2590 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2591 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2592 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2594 column = gtk_tree_view_column_new_with_attributes
2595 ("Font", gtk_cell_renderer_text_new(),
2596 "text", 0, (char *)NULL);
2597 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2598 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2599 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2600 "changed", G_CALLBACK(family_changed), fs);
2601 g_signal_connect(G_OBJECT(w), "row-activated",
2602 G_CALLBACK(alias_resolve), fs);
2604 scroll = gtk_scrolled_window_new(NULL, NULL);
2605 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2607 gtk_container_add(GTK_CONTAINER(scroll), w);
2608 gtk_widget_show(scroll);
2609 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2610 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2611 gtk_widget_set_size_request(scroll, font_width, lists_height);
2612 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2613 GTK_EXPAND | GTK_FILL, 0, 0);
2614 fs->family_model = model;
2615 fs->family_list = w;
2617 label = gtk_label_new_with_mnemonic("_Style:");
2618 gtk_widget_show(label);
2619 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2620 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2623 * The Style list box can contain insensitive elements
2624 * (character set headings for server-side fonts), so we add
2625 * an extra column to the list store to hold that information.
2627 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2629 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2630 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2631 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2633 column = gtk_tree_view_column_new_with_attributes
2634 ("Style", gtk_cell_renderer_text_new(),
2635 "text", 0, "sensitive", 3, (char *)NULL);
2636 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2637 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2638 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2639 "changed", G_CALLBACK(style_changed), fs);
2641 scroll = gtk_scrolled_window_new(NULL, NULL);
2642 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2644 gtk_container_add(GTK_CONTAINER(scroll), w);
2645 gtk_widget_show(scroll);
2646 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2647 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2648 gtk_widget_set_size_request(scroll, style_width, lists_height);
2649 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2650 GTK_EXPAND | GTK_FILL, 0, 0);
2651 fs->style_model = model;
2654 label = gtk_label_new_with_mnemonic("Si_ze:");
2655 gtk_widget_show(label);
2656 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2657 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2660 * The Size label attaches primarily to a text input box so
2661 * that the user can select a size of their choice. The list
2662 * of available sizes is secondary.
2664 fs->size_entry = w = gtk_entry_new();
2665 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2666 gtk_widget_set_size_request(w, size_width, -1);
2668 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2669 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2672 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2673 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2674 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2676 column = gtk_tree_view_column_new_with_attributes
2677 ("Size", gtk_cell_renderer_text_new(),
2678 "text", 0, (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(size_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_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2692 GTK_EXPAND | GTK_FILL, 0, 0);
2693 fs->size_model = model;
2699 fs->preview_area = gtk_drawing_area_new();
2700 fs->preview_pixmap = NULL;
2701 fs->preview_width = 0;
2702 fs->preview_height = 0;
2703 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2704 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2705 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2706 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2708 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2710 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2711 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2712 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2713 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2714 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2715 gtk_widget_show(fs->preview_area);
2716 ww = fs->preview_area;
2717 w = gtk_frame_new(NULL);
2718 gtk_container_add(GTK_CONTAINER(w), ww);
2720 #if GTK_CHECK_VERSION(2,4,0)
2722 /* GtkAlignment seems to be the simplest way to put padding round things */
2723 w = gtk_alignment_new(0, 0, 1, 1);
2724 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2725 gtk_container_add(GTK_CONTAINER(w), ww);
2729 w = gtk_frame_new("Preview of font");
2730 gtk_container_add(GTK_CONTAINER(w), ww);
2732 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2733 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2736 w = gtk_check_button_new_with_label("Show client-side fonts");
2737 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2738 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2739 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2740 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2742 fs->filter_buttons[i++] = w;
2743 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2744 w = gtk_check_button_new_with_label("Show server-side fonts");
2745 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2746 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2747 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2748 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2750 fs->filter_buttons[i++] = w;
2751 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2752 w = gtk_check_button_new_with_label("Show server-side font aliases");
2753 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2754 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2755 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2756 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2758 fs->filter_buttons[i++] = w;
2759 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2760 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2761 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2762 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2763 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2764 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2766 fs->filter_buttons[i++] = w;
2767 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2769 assert(i == lenof(fs->filter_buttons));
2770 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
2771 FONTFLAG_SERVERALIAS;
2772 unifontsel_set_filter_buttons(fs);
2775 * Go and find all the font names, and set up our master font
2778 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2779 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2780 for (i = 0; i < lenof(unifont_types); i++)
2781 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2782 unifontsel_add_entry, fs);
2785 * And set up the initial font names list.
2787 unifontsel_setup_familylist(fs);
2789 fs->selsize = fs->intendedsize = 13; /* random default */
2790 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2792 return (unifontsel *)fs;
2795 void unifontsel_destroy(unifontsel *fontsel)
2797 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2800 if (fs->preview_pixmap)
2801 gdk_pixmap_unref(fs->preview_pixmap);
2803 freetree234(fs->fonts_by_selorder);
2804 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2806 freetree234(fs->fonts_by_realname);
2808 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2812 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2814 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2815 int i, start, end, size, flags;
2816 const char *fontname2 = NULL;
2820 * Provide a default if given an empty or null font name.
2822 if (!fontname || !*fontname)
2823 fontname = "server:fixed";
2826 * Call the canonify_fontname function.
2828 fontname = unifont_do_prefix(fontname, &start, &end);
2829 for (i = start; i < end; i++) {
2830 fontname2 = unifont_types[i]->canonify_fontname
2831 (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
2836 return; /* font name not recognised */
2839 * Now look up the canonified font name in our index.
2842 struct fontinfo_realname_find f;
2843 f.realname = fontname2;
2845 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2849 * If we've found the font, and its size field is either
2850 * correct or zero (the latter indicating a scalable font),
2851 * then we're done. Otherwise, try looking up the original
2852 * font name instead.
2854 if (!info || (info->size != size && info->size != 0)) {
2855 struct fontinfo_realname_find f;
2856 f.realname = fontname;
2859 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
2860 if (!info || info->size != size)
2861 return; /* font name not in our index */
2865 * Now we've got a fontinfo structure and a font size, so we
2866 * know everything we need to fill in all the fields in the
2869 unifontsel_select_font(fs, info, size, 0, TRUE);
2872 char *unifontsel_get_name(unifontsel *fontsel)
2874 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2880 if (fs->selected->size == 0) {
2881 name = fs->selected->fontclass->scale_fontname
2882 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2884 char *ret = dupcat(fs->selected->fontclass->prefix, ":",
2891 return dupcat(fs->selected->fontclass->prefix, ":",
2892 fs->selected->realname, NULL);
2895 #endif /* GTK_CHECK_VERSION(2,0,0) */