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 * - all the GDK font functions used in the x11font subclass are
30 * deprecated, so one day they may go away. When this happens -
31 * or before, if I'm feeling proactive - it oughtn't to be too
32 * difficult in principle to convert the whole thing to use
33 * actual Xlib font calls.
35 * - it would be nice if we could move the processing of
36 * underline and VT100 double width into this module, so that
37 * instead of using the ghastly pixmap-stretching technique
38 * everywhere we could tell the Pango backend to scale its
39 * fonts to double size properly and at full resolution.
40 * However, this requires me to learn how to make Pango stretch
41 * text to an arbitrary aspect ratio (for double-width only
42 * text, which perversely is harder than DW+DH), and right now
43 * I haven't the energy.
47 * Ad-hoc vtable mechanism to allow font structures to be
50 * Any instance of `unifont' used in the vtable functions will
51 * actually be the first element of a larger structure containing
52 * data specific to the subtype. This is permitted by the ISO C
53 * provision that one may safely cast between a pointer to a
54 * structure and a pointer to its first element.
57 #define FONTFLAG_CLIENTSIDE 0x0001
58 #define FONTFLAG_SERVERSIDE 0x0002
59 #define FONTFLAG_SERVERALIAS 0x0004
60 #define FONTFLAG_NONMONOSPACED 0x0008
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 void (*destroy)(unifont *font);
75 void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
76 int x, int y, const char *string, int len, int wide,
77 int bold, int cellwidth);
78 void (*enum_fonts)(GtkWidget *widget,
79 fontsel_add_entry callback, void *callback_ctx);
80 char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
82 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
85 * `Static data members' of the `class'.
90 /* ----------------------------------------------------------------------
91 * GDK-based X11 font implementation.
94 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
95 int x, int y, const char *string, int len,
96 int wide, int bold, int cellwidth);
97 static unifont *x11font_create(GtkWidget *widget, const char *name,
99 int shadowoffset, int shadowalways);
100 static void x11font_destroy(unifont *font);
101 static void x11font_enum_fonts(GtkWidget *widget,
102 fontsel_add_entry callback, void *callback_ctx);
103 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
104 int *size, int resolve_aliases);
105 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
111 * Actual font objects. We store a number of these, for
112 * automatically guessed bold and wide variants.
114 * The parallel array `allocated' indicates whether we've
115 * tried to fetch a subfont already (thus distinguishing NULL
116 * because we haven't tried yet from NULL because we tried and
117 * failed, so that we don't keep trying and failing
123 * `sixteen_bit' is true iff the font object is indexed by
124 * values larger than a byte. That is, this flag tells us
125 * whether we use gdk_draw_text_wc() or gdk_draw_text().
129 * `variable' is true iff the font is non-fixed-pitch. This
130 * enables some code which takes greater care over character
131 * positioning during text drawing.
135 * Data passed in to unifont_create().
137 int wide, bold, shadowoffset, shadowalways;
140 static const struct unifont_vtable x11font_vtable = {
145 x11font_canonify_fontname,
146 x11font_scale_fontname,
150 char *x11_guess_derived_font_name(GdkFont *font, int bold, int wide)
152 XFontStruct *xfs = GDK_FONT_XFONT(font);
153 Display *disp = GDK_FONT_XDISPLAY(font);
154 Atom fontprop = XInternAtom(disp, "FONT", False);
156 if (XGetFontProperty(xfs, fontprop, &ret)) {
157 char *name = XGetAtomName(disp, (Atom)ret);
158 if (name && name[0] == '-') {
160 char *dupname, *extrafree = NULL, *ret;
164 p = q = dupname = dupstr(name); /* skip initial minus */
167 while (*p && nstr < lenof(strings)) {
170 strings[nstr++] = p+1;
175 if (nstr < lenof(strings))
176 return NULL; /* XLFD was malformed */
182 /* 4 is `wideness', which obviously may have changed. */
183 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
184 strings[4] = strings[5] = "*";
185 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
188 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
189 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
190 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
191 "-", strings[ 9], "-", strings[10], "-", strings[11],
192 "-", strings[12], NULL);
202 static int x11_font_width(GdkFont *font, int sixteen_bit)
208 return gdk_text_width(font, (const gchar *)&space, 2);
210 return gdk_char_width(font, '0');
214 static unifont *x11font_create(GtkWidget *widget, const char *name,
216 int shadowoffset, int shadowalways)
218 struct x11font *xfont;
222 Atom charset_registry, charset_encoding, spacing;
223 unsigned long registry_ret, encoding_ret, spacing_ret;
224 int pubcs, realcs, sixteen_bit, variable;
227 font = gdk_font_load(name);
231 xfs = GDK_FONT_XFONT(font);
232 disp = GDK_FONT_XDISPLAY(font);
234 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
235 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
237 pubcs = realcs = CS_NONE;
241 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
242 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
244 reg = XGetAtomName(disp, (Atom)registry_ret);
245 enc = XGetAtomName(disp, (Atom)encoding_ret);
247 char *encoding = dupcat(reg, "-", enc, NULL);
248 pubcs = realcs = charset_from_xenc(encoding);
251 * iso10646-1 is the only wide font encoding we
252 * support. In this case, we expect clients to give us
253 * UTF-8, which this module must internally convert
254 * into 16-bit Unicode.
256 if (!strcasecmp(encoding, "iso10646-1")) {
258 pubcs = realcs = CS_UTF8;
262 * Hack for X line-drawing characters: if the primary
263 * font is encoded as ISO-8859-1, and has valid glyphs
264 * in the first 32 char positions, it is assumed that
265 * those glyphs are the VT100 line-drawing character
268 * Actually, we'll hack even harder by only checking
269 * position 0x19 (vertical line, VT100 linedrawing
270 * `x'). Then we can check it easily by seeing if the
271 * ascent and descent differ.
273 if (pubcs == CS_ISO8859_1) {
274 int lb, rb, wid, asc, desc;
279 gdk_string_extents(font, text, &lb, &rb, &wid, &asc, &desc);
281 realcs = CS_ISO8859_1_X11;
288 spacing = XInternAtom(disp, "SPACING", False);
289 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
291 spc = XGetAtomName(disp, (Atom)spacing_ret);
293 if (spc && strchr("CcMm", spc[0]))
297 xfont = snew(struct x11font);
298 xfont->u.vt = &x11font_vtable;
299 xfont->u.width = x11_font_width(font, sixteen_bit);
300 xfont->u.ascent = font->ascent;
301 xfont->u.descent = font->descent;
302 xfont->u.height = xfont->u.ascent + xfont->u.descent;
303 xfont->u.public_charset = pubcs;
304 xfont->u.real_charset = realcs;
305 xfont->fonts[0] = font;
306 xfont->allocated[0] = TRUE;
307 xfont->sixteen_bit = sixteen_bit;
308 xfont->variable = variable;
311 xfont->shadowoffset = shadowoffset;
312 xfont->shadowalways = shadowalways;
314 for (i = 1; i < lenof(xfont->fonts); i++) {
315 xfont->fonts[i] = NULL;
316 xfont->allocated[i] = FALSE;
319 return (unifont *)xfont;
322 static void x11font_destroy(unifont *font)
324 struct x11font *xfont = (struct x11font *)font;
327 for (i = 0; i < lenof(xfont->fonts); i++)
329 gdk_font_unref(xfont->fonts[i]);
333 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
335 char *derived_name = x11_guess_derived_font_name
336 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
337 xfont->fonts[sfid] = gdk_font_load(derived_name); /* may be NULL */
338 xfont->allocated[sfid] = TRUE;
342 static void x11font_really_draw_text(GdkDrawable *target, GdkFont *font,
343 GdkGC *gc, int x, int y,
344 const gchar *string, int clen, int nchars,
345 int shadowbold, int shadowoffset,
346 int fontvariable, int cellwidth)
348 int step = clen * nchars, nsteps = 1, centre = FALSE;
352 * In a variable-pitch font, we draw one character at a
353 * time, and centre it in the character cell.
360 while (nsteps-- > 0) {
363 X += (cellwidth - gdk_text_width(font, string, step)) / 2;
365 gdk_draw_text(target, font, gc, X, y, string, step);
367 gdk_draw_text(target, font, gc, X + shadowoffset, y, string, step);
374 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
375 int x, int y, const char *string, int len,
376 int wide, int bold, int cellwidth)
378 struct x11font *xfont = (struct x11font *)font;
380 int shadowbold = FALSE;
381 int mult = (wide ? 2 : 1);
387 * Decide which subfont we're using, and whether we have to
390 if (xfont->shadowalways && bold) {
394 sfid = 2 * wide + bold;
395 if (!xfont->allocated[sfid])
396 x11_alloc_subfont(xfont, sfid);
397 if (bold && !xfont->fonts[sfid]) {
400 sfid = 2 * wide + bold;
401 if (!xfont->allocated[sfid])
402 x11_alloc_subfont(xfont, sfid);
405 if (!xfont->fonts[sfid])
406 return; /* we've tried our best, but no luck */
408 if (xfont->sixteen_bit) {
410 * This X font has 16-bit character indices, which means
411 * we expect our string to have been passed in UTF-8.
415 int nchars, maxchars, i;
418 * Convert the input string to wide-character Unicode.
421 for (i = 0; i < len; i++)
422 if ((unsigned char)string[i] <= 0x7F ||
423 (unsigned char)string[i] >= 0xC0)
425 wcs = snewn(maxchars+1, wchar_t);
426 nchars = charset_to_unicode((char **)&string, &len, wcs, maxchars,
427 CS_UTF8, NULL, NULL, 0);
428 assert(nchars <= maxchars);
431 xcs = snewn(nchars, XChar2b);
432 for (i = 0; i < nchars; i++) {
433 xcs[i].byte1 = wcs[i] >> 8;
434 xcs[i].byte2 = wcs[i];
437 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
438 (gchar *)xcs, 2, nchars,
439 shadowbold, xfont->shadowoffset,
440 xfont->variable, cellwidth * mult);
444 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
446 shadowbold, xfont->shadowoffset,
447 xfont->variable, cellwidth * mult);
451 static void x11font_enum_fonts(GtkWidget *widget,
452 fontsel_add_entry callback, void *callback_ctx)
456 int nnames, i, max, tmpsize;
460 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
462 XFreeFontNames(fontnames);
470 for (i = 0; i < nnames; i++) {
471 if (fontnames[i][0] == '-') {
473 * Dismember an XLFD and convert it into the format
474 * we'll be using in the font selector.
476 char *components[14];
477 char *p, *font, *style, *stylekey, *charset;
478 int j, weightkey, slantkey, setwidthkey;
479 int thistmpsize, fontsize, flags;
481 thistmpsize = 4 * strlen(fontnames[i]) + 256;
482 if (tmpsize < thistmpsize) {
483 tmpsize = thistmpsize;
484 tmp = sresize(tmp, tmpsize, char);
486 strcpy(tmp, fontnames[i]);
489 for (j = 0; j < 14; j++) {
493 while (*p && *p != '-')
499 * Font name is made up of fields 0 and 1, in reverse
500 * order with parentheses. (This is what the GTK 1.2 X
501 * font selector does, and it seems to come out
502 * looking reasonably sensible.)
505 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
508 * Charset is made up of fields 12 and 13.
511 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
514 * Style is a mixture of quite a lot of the fields,
515 * with some strange formatting.
518 p += sprintf(p, "%s", components[2][0] ? components[2] :
520 if (!g_strcasecmp(components[3], "i"))
521 p += sprintf(p, " italic");
522 else if (!g_strcasecmp(components[3], "o"))
523 p += sprintf(p, " oblique");
524 else if (!g_strcasecmp(components[3], "ri"))
525 p += sprintf(p, " reverse italic");
526 else if (!g_strcasecmp(components[3], "ro"))
527 p += sprintf(p, " reverse oblique");
528 else if (!g_strcasecmp(components[3], "ot"))
529 p += sprintf(p, " other-slant");
530 if (components[4][0] && g_strcasecmp(components[4], "normal"))
531 p += sprintf(p, " %s", components[4]);
532 if (!g_strcasecmp(components[10], "m"))
533 p += sprintf(p, " [M]");
534 if (!g_strcasecmp(components[10], "c"))
535 p += sprintf(p, " [C]");
536 if (components[5][0])
537 p += sprintf(p, " %s", components[5]);
540 * Style key is the same stuff as above, but with a
541 * couple of transformations done on it to make it
542 * sort more sensibly.
546 if (!g_strcasecmp(components[2], "medium") ||
547 !g_strcasecmp(components[2], "regular") ||
548 !g_strcasecmp(components[2], "normal") ||
549 !g_strcasecmp(components[2], "book"))
551 else if (!g_strncasecmp(components[2], "demi", 4) ||
552 !g_strncasecmp(components[2], "semi", 4))
556 if (!g_strcasecmp(components[3], "r"))
558 else if (!g_strncasecmp(components[3], "r", 1))
562 if (!g_strcasecmp(components[4], "normal"))
567 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
569 (int)strlen(components[2]), components[2],
571 (int)strlen(components[3]), components[3],
573 (int)strlen(components[4]), components[4],
574 (int)strlen(components[10]), components[10],
575 (int)strlen(components[5]), components[5]);
577 assert(p - tmp < thistmpsize);
580 * Size is in pixels, for our application, so we
581 * derive it directly from the pixel size field,
584 fontsize = atoi(components[6]);
587 * Flags: we need to know whether this is a monospaced
588 * font, which we do by examining the spacing field
591 flags = FONTFLAG_SERVERSIDE;
592 if (!strchr("CcMm", components[10][0]))
593 flags |= FONTFLAG_NONMONOSPACED;
596 * Not sure why, but sometimes the X server will
597 * deliver dummy font types in which fontsize comes
598 * out as zero. Filter those out.
601 callback(callback_ctx, fontnames[i], font, charset,
602 style, stylekey, fontsize, flags, &x11font_vtable);
605 * This isn't an XLFD, so it must be an alias.
606 * Transmit it with mostly null data.
608 * It would be nice to work out if it's monospaced
609 * here, but at the moment I can't see that being
610 * anything but computationally hideous. Ah well.
612 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
613 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
616 XFreeFontNames(fontnames);
619 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
620 int *size, int resolve_aliases)
623 * When given an X11 font name to try to make sense of for a
624 * font selector, we must attempt to load it (to see if it
625 * exists), and then canonify it by extracting its FONT
626 * property, which should give its full XLFD even if what we
627 * originally had was a wildcard.
629 * However, we must carefully avoid canonifying font
630 * _aliases_, unless specifically asked to, because the font
631 * selector treats them as worthwhile in their own right.
633 GdkFont *font = gdk_font_load(name);
636 Atom fontprop, fontprop2;
640 return NULL; /* didn't make sense to us, sorry */
644 xfs = GDK_FONT_XFONT(font);
645 disp = GDK_FONT_XDISPLAY(font);
646 fontprop = XInternAtom(disp, "FONT", False);
648 if (XGetFontProperty(xfs, fontprop, &ret)) {
649 char *newname = XGetAtomName(disp, (Atom)ret);
651 unsigned long fsize = 12;
653 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
654 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
656 gdk_font_unref(font);
657 return dupstr(name[0] == '-' || resolve_aliases ?
663 gdk_font_unref(font);
664 return NULL; /* something went wrong */
667 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
670 return NULL; /* shan't */
673 #if GTK_CHECK_VERSION(2,0,0)
675 /* ----------------------------------------------------------------------
676 * Pango font implementation (for GTK 2 only).
679 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
680 int x, int y, const char *string, int len,
681 int wide, int bold, int cellwidth);
682 static unifont *pangofont_create(GtkWidget *widget, const char *name,
684 int shadowoffset, int shadowalways);
685 static void pangofont_destroy(unifont *font);
686 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
688 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
689 int *size, int resolve_aliases);
690 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
698 PangoFontDescription *desc;
701 * The containing widget.
705 * Data passed in to unifont_create().
707 int bold, shadowoffset, shadowalways;
710 static const struct unifont_vtable pangofont_vtable = {
714 pangofont_enum_fonts,
715 pangofont_canonify_fontname,
716 pangofont_scale_fontname,
721 * This function is used to rigorously validate a
722 * PangoFontDescription. Later versions of Pango have a nasty
723 * habit of accepting _any_ old string as input to
724 * pango_font_description_from_string and returning a font
725 * description which can actually be used to display text, even if
726 * they have to do it by falling back to their most default font.
727 * This is doubtless helpful in some situations, but not here,
728 * because we need to know if a Pango font string actually _makes
729 * sense_ in order to fall back to treating it as an X font name
730 * if it doesn't. So we check that the font family is actually one
731 * supported by Pango.
733 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
734 PangoFontDescription *desc)
736 #ifndef PANGO_PRE_1POINT6
739 PangoFontFamily **families;
740 int i, nfamilies, matched;
743 * Ask Pango for a list of font families, and iterate through
744 * them to see if one of them matches the family in the
745 * PangoFontDescription.
747 #ifndef PANGO_PRE_1POINT6
748 map = pango_context_get_font_map(ctx);
751 pango_font_map_list_families(map, &families, &nfamilies);
753 pango_context_list_families(ctx, &families, &nfamilies);
757 for (i = 0; i < nfamilies; i++) {
758 if (!g_strcasecmp(pango_font_family_get_name(families[i]),
759 pango_font_description_get_family(desc))) {
769 static unifont *pangofont_create(GtkWidget *widget, const char *name,
771 int shadowoffset, int shadowalways)
773 struct pangofont *pfont;
775 #ifndef PANGO_PRE_1POINT6
778 PangoFontDescription *desc;
780 PangoFontMetrics *metrics;
782 desc = pango_font_description_from_string(name);
785 ctx = gtk_widget_get_pango_context(widget);
787 pango_font_description_free(desc);
790 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
791 pango_font_description_free(desc);
794 #ifndef PANGO_PRE_1POINT6
795 map = pango_context_get_font_map(ctx);
797 pango_font_description_free(desc);
800 fset = pango_font_map_load_fontset(map, ctx, desc,
801 pango_context_get_language(ctx));
803 fset = pango_context_load_fontset(ctx, desc,
804 pango_context_get_language(ctx));
807 pango_font_description_free(desc);
810 metrics = pango_fontset_get_metrics(fset);
812 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
813 pango_font_description_free(desc);
814 g_object_unref(fset);
818 pfont = snew(struct pangofont);
819 pfont->u.vt = &pangofont_vtable;
821 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
822 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
823 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
824 pfont->u.height = pfont->u.ascent + pfont->u.descent;
825 /* The Pango API is hardwired to UTF-8 */
826 pfont->u.public_charset = CS_UTF8;
827 pfont->u.real_charset = CS_UTF8;
830 pfont->widget = widget;
832 pfont->shadowoffset = shadowoffset;
833 pfont->shadowalways = shadowalways;
835 pango_font_metrics_unref(metrics);
837 return (unifont *)pfont;
840 static void pangofont_destroy(unifont *font)
842 struct pangofont *pfont = (struct pangofont *)font;
843 pango_font_description_free(pfont->desc);
844 g_object_unref(pfont->fset);
848 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
849 int x, int y, const char *string, int len,
850 int wide, int bold, int cellwidth)
852 struct pangofont *pfont = (struct pangofont *)font;
855 int shadowbold = FALSE;
860 y -= pfont->u.ascent;
862 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
863 pango_layout_set_font_description(layout, pfont->desc);
864 if (bold > pfont->bold) {
865 if (pfont->shadowalways)
868 PangoFontDescription *desc2 =
869 pango_font_description_copy_static(pfont->desc);
870 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
871 pango_layout_set_font_description(layout, desc2);
879 * Extract a single UTF-8 character from the string.
883 (unsigned char)string[clen] >= 0x80 &&
884 (unsigned char)string[clen] < 0xC0)
887 pango_layout_set_text(layout, string, clen);
888 pango_layout_get_pixel_extents(layout, NULL, &rect);
889 gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2,
890 y + (pfont->u.height - rect.height)/2, layout);
892 gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2 + pfont->shadowoffset,
893 y + (pfont->u.height - rect.height)/2, layout);
900 g_object_unref(layout);
904 * Dummy size value to be used when converting a
905 * PangoFontDescription of a scalable font to a string for
908 #define PANGO_DUMMY_SIZE 12
910 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
914 #ifndef PANGO_PRE_1POINT6
917 PangoFontFamily **families;
920 ctx = gtk_widget_get_pango_context(widget);
925 * Ask Pango for a list of font families, and iterate through
928 #ifndef PANGO_PRE_1POINT6
929 map = pango_context_get_font_map(ctx);
932 pango_font_map_list_families(map, &families, &nfamilies);
934 pango_context_list_families(ctx, &families, &nfamilies);
936 for (i = 0; i < nfamilies; i++) {
937 PangoFontFamily *family = families[i];
938 const char *familyname;
940 PangoFontFace **faces;
944 * Set up our flags for this font family, and get the name
947 flags = FONTFLAG_CLIENTSIDE;
948 #ifndef PANGO_PRE_1POINT4
950 * In very early versions of Pango, we can't tell
951 * monospaced fonts from non-monospaced.
953 if (!pango_font_family_is_monospace(family))
954 flags |= FONTFLAG_NONMONOSPACED;
956 familyname = pango_font_family_get_name(family);
959 * Go through the available font faces in this family.
961 pango_font_family_list_faces(family, &faces, &nfaces);
962 for (j = 0; j < nfaces; j++) {
963 PangoFontFace *face = faces[j];
964 PangoFontDescription *desc;
965 const char *facename;
967 int k, nsizes, dummysize;
970 * Get the face name string.
972 facename = pango_font_face_get_face_name(face);
975 * Set up a font description with what we've got so
976 * far. We'll fill in the size field manually and then
977 * call pango_font_description_to_string() to give the
978 * full real name of the specific font.
980 desc = pango_font_face_describe(face);
983 * See if this font has a list of specific sizes.
985 #ifndef PANGO_PRE_1POINT4
986 pango_font_face_list_sizes(face, &sizes, &nsizes);
989 * In early versions of Pango, that call wasn't
990 * supported; we just have to assume everything is
997 * Write a single entry with a dummy size.
999 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1005 * If so, go through them one by one.
1007 for (k = 0; k < nsizes; k++) {
1011 pango_font_description_set_size(desc, sizes[k]);
1013 fullname = pango_font_description_to_string(desc);
1016 * Construct the sorting key for font styles.
1022 n = pango_font_description_get_weight(desc);
1023 /* Weight: normal, then lighter, then bolder */
1024 if (n <= PANGO_WEIGHT_NORMAL)
1025 n = PANGO_WEIGHT_NORMAL - n;
1026 p += sprintf(p, "%4d", n);
1028 n = pango_font_description_get_style(desc);
1029 p += sprintf(p, " %2d", n);
1031 n = pango_font_description_get_stretch(desc);
1032 /* Stretch: closer to normal sorts earlier */
1033 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1034 (n < PANGO_STRETCH_NORMAL);
1035 p += sprintf(p, " %2d", n);
1037 n = pango_font_description_get_variant(desc);
1038 p += sprintf(p, " %2d", n);
1043 * Got everything. Hand off to the callback.
1044 * (The charset string is NULL, because only
1045 * server-side X fonts use it.)
1047 callback(callback_ctx, fullname, familyname, NULL, facename,
1049 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1050 flags, &pangofont_vtable);
1054 if (sizes != &dummysize)
1057 pango_font_description_free(desc);
1064 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1065 int *size, int resolve_aliases)
1068 * When given a Pango font name to try to make sense of for a
1069 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1070 * extract its original size (in pixels) into the `size' field.
1073 #ifndef PANGO_PRE_1POINT6
1076 PangoFontDescription *desc;
1078 PangoFontMetrics *metrics;
1079 char *newname, *retname;
1081 desc = pango_font_description_from_string(name);
1084 ctx = gtk_widget_get_pango_context(widget);
1086 pango_font_description_free(desc);
1089 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1090 pango_font_description_free(desc);
1093 #ifndef PANGO_PRE_1POINT6
1094 map = pango_context_get_font_map(ctx);
1096 pango_font_description_free(desc);
1099 fset = pango_font_map_load_fontset(map, ctx, desc,
1100 pango_context_get_language(ctx));
1102 fset = pango_context_load_fontset(ctx, desc,
1103 pango_context_get_language(ctx));
1106 pango_font_description_free(desc);
1109 metrics = pango_fontset_get_metrics(fset);
1111 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1112 pango_font_description_free(desc);
1113 g_object_unref(fset);
1117 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1118 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1119 newname = pango_font_description_to_string(desc);
1120 retname = dupstr(newname);
1123 pango_font_metrics_unref(metrics);
1124 pango_font_description_free(desc);
1125 g_object_unref(fset);
1130 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1133 PangoFontDescription *desc;
1134 char *newname, *retname;
1136 desc = pango_font_description_from_string(name);
1139 pango_font_description_set_size(desc, size * PANGO_SCALE);
1140 newname = pango_font_description_to_string(desc);
1141 retname = dupstr(newname);
1143 pango_font_description_free(desc);
1148 #endif /* GTK_CHECK_VERSION(2,0,0) */
1150 /* ----------------------------------------------------------------------
1151 * Outermost functions which do the vtable dispatch.
1155 * Complete list of font-type subclasses. Listed in preference
1156 * order for unifont_create(). (That is, in the extremely unlikely
1157 * event that the same font name is valid as both a Pango and an
1158 * X11 font, it will be interpreted as the former in the absence
1159 * of an explicit type-disambiguating prefix.)
1161 static const struct unifont_vtable *unifont_types[] = {
1162 #if GTK_CHECK_VERSION(2,0,0)
1169 * Function which takes a font name and processes the optional
1170 * scheme prefix. Returns the tail of the font name suitable for
1171 * passing to individual font scheme functions, and also provides
1172 * a subrange of the unifont_types[] array above.
1174 * The return values `start' and `end' denote a half-open interval
1175 * in unifont_types[]; that is, the correct way to iterate over
1178 * for (i = start; i < end; i++) {...}
1180 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1182 int colonpos = strcspn(name, ":");
1185 if (name[colonpos]) {
1187 * There's a colon prefix on the font name. Use it to work
1188 * out which subclass to use.
1190 for (i = 0; i < lenof(unifont_types); i++) {
1191 if (strlen(unifont_types[i]->prefix) == colonpos &&
1192 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1195 return name + colonpos + 1;
1199 * None matched, so return an empty scheme list to prevent
1200 * any scheme from being called at all.
1203 return name + colonpos + 1;
1206 * No colon prefix, so just use all the subclasses.
1209 *end = lenof(unifont_types);
1214 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1215 int bold, int shadowoffset, int shadowalways)
1219 name = unifont_do_prefix(name, &start, &end);
1221 for (i = start; i < end; i++) {
1222 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1223 shadowoffset, shadowalways);
1227 return NULL; /* font not found in any scheme */
1230 void unifont_destroy(unifont *font)
1232 font->vt->destroy(font);
1235 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1236 int x, int y, const char *string, int len,
1237 int wide, int bold, int cellwidth)
1239 font->vt->draw_text(target, gc, font, x, y, string, len,
1240 wide, bold, cellwidth);
1243 #if GTK_CHECK_VERSION(2,0,0)
1245 /* ----------------------------------------------------------------------
1246 * Implementation of a unified font selector. Used on GTK 2 only;
1247 * for GTK 1 we still use the standard font selector.
1250 typedef struct fontinfo fontinfo;
1252 typedef struct unifontsel_internal {
1253 /* This must be the structure's first element, for cross-casting */
1255 GtkListStore *family_model, *style_model, *size_model;
1256 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1257 GtkWidget *filter_buttons[4];
1258 GtkWidget *preview_area;
1259 GdkPixmap *preview_pixmap;
1260 int preview_width, preview_height;
1261 GdkColor preview_fg, preview_bg;
1263 tree234 *fonts_by_realname, *fonts_by_selorder;
1265 int selsize, intendedsize;
1266 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1267 } unifontsel_internal;
1270 * The structure held in the tree234s. All the string members are
1271 * part of the same allocated area, so don't need freeing
1276 char *family, *charset, *style, *stylekey;
1279 * Fallback sorting key, to permit multiple identical entries
1280 * to exist in the selorder tree.
1284 * Indices mapping fontinfo structures to indices in the list
1285 * boxes. sizeindex is irrelevant if the font is scalable
1288 int familyindex, styleindex, sizeindex;
1290 * The class of font.
1292 const struct unifont_vtable *fontclass;
1295 static int fontinfo_realname_compare(void *av, void *bv)
1297 fontinfo *a = (fontinfo *)av;
1298 fontinfo *b = (fontinfo *)bv;
1299 return g_strcasecmp(a->realname, b->realname);
1302 static int fontinfo_realname_find(void *av, void *bv)
1304 const char *a = (const char *)av;
1305 fontinfo *b = (fontinfo *)bv;
1306 return g_strcasecmp(a, b->realname);
1309 static int strnullcasecmp(const char *a, const char *b)
1314 * If exactly one of the inputs is NULL, it compares before
1317 if ((i = (!b) - (!a)) != 0)
1321 * NULL compares equal.
1327 * Otherwise, ordinary strcasecmp.
1329 return g_strcasecmp(a, b);
1332 static int fontinfo_selorder_compare(void *av, void *bv)
1334 fontinfo *a = (fontinfo *)av;
1335 fontinfo *b = (fontinfo *)bv;
1337 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1339 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1341 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1343 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1345 if (a->size != b->size)
1346 return (a->size < b->size ? -1 : +1);
1347 if (a->index != b->index)
1348 return (a->index < b->index ? -1 : +1);
1352 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1355 int i, listindex, minpos = -1, maxpos = -1;
1356 char *currfamily = NULL;
1359 gtk_list_store_clear(fs->family_model);
1363 * Search through the font tree for anything matching our
1364 * current filter criteria. When we find one, add its font
1365 * name to the list box.
1367 for (i = 0 ;; i++) {
1368 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1370 * info may be NULL if we've just run off the end of the
1371 * tree. We must still do a processing pass in that
1372 * situation, in case we had an unfinished font record in
1375 if (info && (info->flags &~ fs->filter_flags)) {
1376 info->familyindex = -1;
1377 continue; /* we're filtering out this font */
1379 if (!info || strnullcasecmp(currfamily, info->family)) {
1381 * We've either finished a family, or started a new
1385 gtk_list_store_append(fs->family_model, &iter);
1386 gtk_list_store_set(fs->family_model, &iter,
1387 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1392 currfamily = info->family;
1396 break; /* now we're done */
1397 info->familyindex = listindex;
1402 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1406 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1407 char *currcs = NULL, *currstyle = NULL;
1410 gtk_list_store_clear(fs->style_model);
1415 * Search through the font tree for anything matching our
1416 * current filter criteria. When we find one, add its charset
1417 * and/or style name to the list box.
1419 for (i = start; i <= end; i++) {
1423 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1425 * info may be NULL if we've just run off the end of the
1426 * relevant data. We must still do a processing pass in
1427 * that situation, in case we had an unfinished font
1428 * record in progress.
1430 if (info && (info->flags &~ fs->filter_flags)) {
1431 info->styleindex = -1;
1432 continue; /* we're filtering out this font */
1434 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1435 strnullcasecmp(currstyle, info->style)) {
1437 * We've either finished a style/charset, or started a
1442 gtk_list_store_append(fs->style_model, &iter);
1443 gtk_list_store_set(fs->style_model, &iter,
1444 0, currstyle, 1, minpos, 2, maxpos+1,
1450 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1451 gtk_list_store_append(fs->style_model, &iter);
1452 gtk_list_store_set(fs->style_model, &iter,
1453 0, info->charset, 1, -1, 2, -1,
1457 currcs = info->charset;
1458 currstyle = info->style;
1462 break; /* now we're done */
1463 info->styleindex = listindex;
1468 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1470 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1478 gtk_list_store_clear(fs->size_model);
1482 * Search through the font tree for anything matching our
1483 * current filter criteria. When we find one, add its font
1484 * name to the list box.
1486 for (i = start; i < end; i++) {
1487 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1488 if (info->flags &~ fs->filter_flags) {
1489 info->sizeindex = -1;
1490 continue; /* we're filtering out this font */
1493 sprintf(sizetext, "%d", info->size);
1494 info->sizeindex = listindex;
1495 gtk_list_store_append(fs->size_model, &iter);
1496 gtk_list_store_set(fs->size_model, &iter,
1497 0, sizetext, 1, i, 2, info->size, -1);
1505 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1506 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1507 gtk_list_store_append(fs->size_model, &iter);
1508 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1509 2, unifontsel_default_sizes[j], -1);
1516 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
1520 for (i = 0; i < lenof(fs->filter_buttons); i++) {
1521 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
1522 (GTK_OBJECT(fs->filter_buttons[i]),
1524 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
1525 !!(fs->filter_flags & flagbit));
1529 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
1532 char *sizename = NULL;
1533 fontinfo *info = fs->selected;
1536 sizename = info->fontclass->scale_fontname
1537 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
1538 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
1539 sizename ? sizename : info->realname,
1540 FALSE, FALSE, 0, 0);
1544 if (fs->preview_pixmap) {
1545 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
1546 gdk_gc_set_foreground(gc, &fs->preview_bg);
1547 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
1548 fs->preview_width, fs->preview_height);
1549 gdk_gc_set_foreground(gc, &fs->preview_fg);
1552 * The pangram used here is rather carefully
1553 * constructed: it contains a sequence of very narrow
1554 * letters (`jil') and a pair of adjacent very wide
1557 * If the user selects a proportional font, it will be
1558 * coerced into fixed-width character cells when used
1559 * in the actual terminal window. We therefore display
1560 * it the same way in the preview pane, so as to show
1561 * it the way it will actually be displayed - and we
1562 * deliberately pick a pangram which will show the
1563 * resulting miskerning at its worst.
1565 * We aren't trying to sell people these fonts; we're
1566 * trying to let them make an informed choice. Better
1567 * that they find out the problems with using
1568 * proportional fonts in terminal windows here than
1569 * that they go to the effort of selecting their font
1570 * and _then_ realise it was a mistake.
1572 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1574 "bankrupt jilted showmen quiz convex fogey",
1575 41, FALSE, FALSE, font->width);
1576 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1577 0, font->ascent + font->height,
1578 "BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
1579 41, FALSE, FALSE, font->width);
1581 * The ordering of punctuation here is also selected
1582 * with some specific aims in mind. I put ` and '
1583 * together because some software (and people) still
1584 * use them as matched quotes no matter what Unicode
1585 * might say on the matter, so people can quickly
1586 * check whether they look silly in a candidate font.
1587 * The sequence #_@ is there to let people judge the
1588 * suitability of the underscore as an effectively
1589 * alphabetic character (since that's how it's often
1590 * used in practice, at least by programmers).
1592 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1593 0, font->ascent + font->height * 2,
1594 "0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
1595 42, FALSE, FALSE, font->width);
1598 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
1601 info->fontclass->destroy(font);
1606 static void unifontsel_select_font(unifontsel_internal *fs,
1607 fontinfo *info, int size, int leftlist,
1608 int size_is_explicit)
1612 GtkTreePath *treepath;
1615 fs->inhibit_response = TRUE;
1617 fs->selected = info;
1619 if (size_is_explicit)
1620 fs->intendedsize = size;
1622 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
1625 * Find the index of this fontinfo in the selorder list.
1628 findpos234(fs->fonts_by_selorder, info, NULL, &index);
1632 * Adjust the font selector flags and redo the font family
1633 * list box, if necessary.
1635 if (leftlist <= 0 &&
1636 (fs->filter_flags | info->flags) != fs->filter_flags) {
1637 fs->filter_flags |= info->flags;
1638 unifontsel_set_filter_buttons(fs);
1639 unifontsel_setup_familylist(fs);
1643 * Find the appropriate family name and select it in the list.
1645 assert(info->familyindex >= 0);
1646 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
1647 gtk_tree_selection_select_path
1648 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
1650 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
1651 treepath, NULL, FALSE, 0.0, 0.0);
1652 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
1653 gtk_tree_path_free(treepath);
1656 * Now set up the font style list.
1658 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
1659 1, &minval, 2, &maxval, -1);
1661 unifontsel_setup_stylelist(fs, minval, maxval);
1664 * Find the appropriate style name and select it in the list.
1667 assert(info->styleindex >= 0);
1668 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
1669 gtk_tree_selection_select_path
1670 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
1672 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
1673 treepath, NULL, FALSE, 0.0, 0.0);
1674 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
1676 gtk_tree_path_free(treepath);
1679 * And set up the size list.
1681 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
1682 1, &minval, 2, &maxval, -1);
1684 unifontsel_setup_sizelist(fs, minval, maxval);
1687 * Find the appropriate size, and select it in the list.
1690 assert(info->sizeindex >= 0);
1691 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
1692 gtk_tree_selection_select_path
1693 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
1695 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1696 treepath, NULL, FALSE, 0.0, 0.0);
1697 gtk_tree_path_free(treepath);
1701 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
1702 if (unifontsel_default_sizes[j] == size) {
1703 treepath = gtk_tree_path_new_from_indices(j, -1);
1704 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
1705 treepath, NULL, FALSE);
1706 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1707 treepath, NULL, FALSE, 0.0,
1709 gtk_tree_path_free(treepath);
1714 * And set up the font size text entry box.
1718 sprintf(sizetext, "%d", size);
1719 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
1723 unifontsel_setup_sizelist(fs, 0, 0);
1724 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
1728 * Grey out the font size edit box if we're not using a
1731 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
1732 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
1734 unifontsel_draw_preview_text(fs);
1736 fs->inhibit_response = FALSE;
1739 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
1741 unifontsel_internal *fs = (unifontsel_internal *)data;
1742 int newstate = gtk_toggle_button_get_active(tb);
1744 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
1748 newflags = fs->filter_flags | flagbit;
1750 newflags = fs->filter_flags & ~flagbit;
1752 if (fs->filter_flags != newflags) {
1753 fs->filter_flags = newflags;
1754 unifontsel_setup_familylist(fs);
1758 static void unifontsel_add_entry(void *ctx, const char *realfontname,
1759 const char *family, const char *charset,
1760 const char *style, const char *stylekey,
1761 int size, int flags,
1762 const struct unifont_vtable *fontclass)
1764 unifontsel_internal *fs = (unifontsel_internal *)ctx;
1769 totalsize = sizeof(fontinfo) + strlen(realfontname) +
1770 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
1771 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
1772 info = (fontinfo *)smalloc(totalsize);
1773 info->fontclass = fontclass;
1774 p = (char *)info + sizeof(fontinfo);
1776 strcpy(p, realfontname);
1783 info->family = NULL;
1789 info->charset = NULL;
1798 strcpy(p, stylekey);
1801 info->stylekey = NULL;
1802 assert(p - (char *)info <= totalsize);
1804 info->flags = flags;
1805 info->index = count234(fs->fonts_by_selorder);
1808 * It's just conceivable that a misbehaving font enumerator
1809 * might tell us about the same font real name more than once,
1810 * in which case we should silently drop the new one.
1812 if (add234(fs->fonts_by_realname, info) != info) {
1817 * However, we should never get a duplicate key in the
1818 * selorder tree, because the index field carefully
1819 * disambiguates otherwise identical records.
1821 add234(fs->fonts_by_selorder, info);
1824 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
1827 fontinfo info2, *below, *above;
1831 * Copy the info structure. This doesn't copy its dynamic
1832 * string fields, but that's unimportant because all we're
1833 * going to do is to adjust the size field and use it in one
1837 info2.size = fs->intendedsize;
1840 * Search in the tree to find the fontinfo structure which
1841 * best approximates the size the user last requested.
1843 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
1845 above = index234(fs->fonts_by_selorder, pos+1);
1848 * See if we've found it exactly, which is an easy special
1849 * case. If we have, it'll be in `below' and not `above',
1850 * because we did a REL234_LE rather than REL234_LT search.
1852 if (!fontinfo_selorder_compare(&info2, below))
1856 * Now we've either found two suitable fonts, one smaller and
1857 * one larger, or we're at one or other extreme end of the
1858 * scale. Find out which, by NULLing out either of below and
1859 * above if it differs from this one in any respect but size
1860 * (and the disambiguating index field). Bear in mind, also,
1861 * that either one might _already_ be NULL if we're at the
1862 * extreme ends of the font list.
1865 info2.size = below->size;
1866 info2.index = below->index;
1867 if (fontinfo_selorder_compare(&info2, below))
1871 info2.size = above->size;
1872 info2.index = above->index;
1873 if (fontinfo_selorder_compare(&info2, above))
1878 * Now return whichever of above and below is non-NULL, if
1879 * that's unambiguous.
1887 * And now we really do have to make a choice about whether to
1888 * round up or down. We'll do it by rounding to nearest,
1889 * breaking ties by rounding up.
1891 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
1897 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
1899 unifontsel_internal *fs = (unifontsel_internal *)data;
1900 GtkTreeModel *treemodel;
1901 GtkTreeIter treeiter;
1905 if (fs->inhibit_response) /* we made this change ourselves */
1908 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1911 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
1912 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1913 info = update_for_intended_size(fs, info);
1915 return; /* _shouldn't_ happen unless font list is completely funted */
1917 fs->selsize = fs->intendedsize; /* font is scalable */
1918 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
1922 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
1924 unifontsel_internal *fs = (unifontsel_internal *)data;
1925 GtkTreeModel *treemodel;
1926 GtkTreeIter treeiter;
1930 if (fs->inhibit_response) /* we made this change ourselves */
1933 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1936 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
1938 return; /* somehow a charset heading got clicked */
1939 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1940 info = update_for_intended_size(fs, info);
1942 return; /* _shouldn't_ happen unless font list is completely funted */
1944 fs->selsize = fs->intendedsize; /* font is scalable */
1945 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
1949 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
1951 unifontsel_internal *fs = (unifontsel_internal *)data;
1952 GtkTreeModel *treemodel;
1953 GtkTreeIter treeiter;
1957 if (fs->inhibit_response) /* we made this change ourselves */
1960 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1963 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
1964 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1965 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
1968 static void size_entry_changed(GtkEditable *ed, gpointer data)
1970 unifontsel_internal *fs = (unifontsel_internal *)data;
1974 if (fs->inhibit_response) /* we made this change ourselves */
1977 text = gtk_entry_get_text(GTK_ENTRY(ed));
1981 assert(fs->selected->size == 0);
1982 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
1986 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
1987 GtkTreeViewColumn *column, gpointer data)
1989 unifontsel_internal *fs = (unifontsel_internal *)data;
1991 int minval, newsize;
1992 fontinfo *info, *newinfo;
1995 if (fs->inhibit_response) /* we made this change ourselves */
1998 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
1999 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
2000 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
2002 newname = info->fontclass->canonify_fontname
2003 (GTK_WIDGET(fs->u.window), info->realname, &newsize, TRUE);
2004 newinfo = find234(fs->fonts_by_realname, (char *)newname,
2005 fontinfo_realname_find);
2008 return; /* font name not in our index */
2009 if (newinfo == info)
2010 return; /* didn't change under canonification => not an alias */
2011 unifontsel_select_font(fs, newinfo,
2012 newinfo->size ? newinfo->size : newsize,
2017 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
2020 unifontsel_internal *fs = (unifontsel_internal *)data;
2022 if (fs->preview_pixmap) {
2023 gdk_draw_pixmap(widget->window,
2024 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
2026 event->area.x, event->area.y,
2027 event->area.x, event->area.y,
2028 event->area.width, event->area.height);
2033 static gint unifontsel_configure_area(GtkWidget *widget,
2034 GdkEventConfigure *event, gpointer data)
2036 unifontsel_internal *fs = (unifontsel_internal *)data;
2037 int ox, oy, nx, ny, x, y;
2040 * Enlarge the pixmap, but never shrink it.
2042 ox = fs->preview_width;
2043 oy = fs->preview_height;
2046 if (x > ox || y > oy) {
2047 if (fs->preview_pixmap)
2048 gdk_pixmap_unref(fs->preview_pixmap);
2050 nx = (x > ox ? x : ox);
2051 ny = (y > oy ? y : oy);
2052 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
2053 fs->preview_width = nx;
2054 fs->preview_height = ny;
2056 unifontsel_draw_preview_text(fs);
2059 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2064 unifontsel *unifontsel_new(const char *wintitle)
2066 unifontsel_internal *fs = snew(unifontsel_internal);
2067 GtkWidget *table, *label, *w, *ww, *scroll;
2068 GtkListStore *model;
2069 GtkTreeViewColumn *column;
2070 int lists_height, preview_height, font_width, style_width, size_width;
2073 fs->inhibit_response = FALSE;
2077 * Invent some magic size constants.
2080 label = gtk_label_new("Quite Long Font Name (Foundry)");
2081 gtk_widget_size_request(label, &req);
2082 font_width = req.width;
2083 lists_height = 14 * req.height;
2084 preview_height = 5 * req.height;
2085 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2086 gtk_widget_size_request(label, &req);
2087 style_width = req.width;
2088 gtk_label_set_text(GTK_LABEL(label), "48000");
2089 gtk_widget_size_request(label, &req);
2090 size_width = req.width;
2091 #if GTK_CHECK_VERSION(2,10,0)
2092 g_object_ref_sink(label);
2093 g_object_unref(label);
2095 gtk_object_sink(GTK_OBJECT(label));
2100 * Create the dialog box and initialise the user-visible
2101 * fields in the returned structure.
2103 fs->u.user_data = NULL;
2104 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2105 gtk_window_set_title(fs->u.window, wintitle);
2106 fs->u.cancel_button = gtk_dialog_add_button
2107 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2108 fs->u.ok_button = gtk_dialog_add_button
2109 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2110 gtk_widget_grab_default(fs->u.ok_button);
2113 * Now set up the internal fields, including in particular all
2114 * the controls that actually allow the user to select fonts.
2116 table = gtk_table_new(8, 3, FALSE);
2117 gtk_widget_show(table);
2118 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2119 /* GtkAlignment seems to be the simplest way to put padding round things */
2120 w = gtk_alignment_new(0, 0, 1, 1);
2121 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2122 gtk_container_add(GTK_CONTAINER(w), table);
2124 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2127 label = gtk_label_new_with_mnemonic("_Font:");
2128 gtk_widget_show(label);
2129 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2130 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2133 * The Font list box displays only a string, but additionally
2134 * stores two integers which give the limits within the
2135 * tree234 of the font entries covered by this list entry.
2137 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2138 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2139 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2140 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2142 column = gtk_tree_view_column_new_with_attributes
2143 ("Font", gtk_cell_renderer_text_new(),
2144 "text", 0, (char *)NULL);
2145 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2146 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2147 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2148 "changed", G_CALLBACK(family_changed), fs);
2149 g_signal_connect(G_OBJECT(w), "row-activated",
2150 G_CALLBACK(alias_resolve), fs);
2152 scroll = gtk_scrolled_window_new(NULL, NULL);
2153 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2155 gtk_container_add(GTK_CONTAINER(scroll), w);
2156 gtk_widget_show(scroll);
2157 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2158 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2159 gtk_widget_set_size_request(scroll, font_width, lists_height);
2160 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2161 GTK_EXPAND | GTK_FILL, 0, 0);
2162 fs->family_model = model;
2163 fs->family_list = w;
2165 label = gtk_label_new_with_mnemonic("_Style:");
2166 gtk_widget_show(label);
2167 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2168 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2171 * The Style list box can contain insensitive elements
2172 * (character set headings for server-side fonts), so we add
2173 * an extra column to the list store to hold that information.
2175 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2177 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2178 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2179 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2181 column = gtk_tree_view_column_new_with_attributes
2182 ("Style", gtk_cell_renderer_text_new(),
2183 "text", 0, "sensitive", 3, (char *)NULL);
2184 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2185 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2186 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2187 "changed", G_CALLBACK(style_changed), fs);
2189 scroll = gtk_scrolled_window_new(NULL, NULL);
2190 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2192 gtk_container_add(GTK_CONTAINER(scroll), w);
2193 gtk_widget_show(scroll);
2194 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2195 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2196 gtk_widget_set_size_request(scroll, style_width, lists_height);
2197 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2198 GTK_EXPAND | GTK_FILL, 0, 0);
2199 fs->style_model = model;
2202 label = gtk_label_new_with_mnemonic("Si_ze:");
2203 gtk_widget_show(label);
2204 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2205 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2208 * The Size label attaches primarily to a text input box so
2209 * that the user can select a size of their choice. The list
2210 * of available sizes is secondary.
2212 fs->size_entry = w = gtk_entry_new();
2213 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2214 gtk_widget_set_size_request(w, size_width, -1);
2216 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2217 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2220 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2221 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2222 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2224 column = gtk_tree_view_column_new_with_attributes
2225 ("Size", gtk_cell_renderer_text_new(),
2226 "text", 0, (char *)NULL);
2227 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2228 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2229 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2230 "changed", G_CALLBACK(size_changed), fs);
2232 scroll = gtk_scrolled_window_new(NULL, NULL);
2233 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2235 gtk_container_add(GTK_CONTAINER(scroll), w);
2236 gtk_widget_show(scroll);
2237 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2238 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2239 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2240 GTK_EXPAND | GTK_FILL, 0, 0);
2241 fs->size_model = model;
2247 fs->preview_area = gtk_drawing_area_new();
2248 fs->preview_pixmap = NULL;
2249 fs->preview_width = 0;
2250 fs->preview_height = 0;
2251 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2252 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2253 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2254 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2256 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2258 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2259 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2260 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2261 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2262 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2263 gtk_widget_show(fs->preview_area);
2264 ww = fs->preview_area;
2265 w = gtk_frame_new(NULL);
2266 gtk_container_add(GTK_CONTAINER(w), ww);
2269 /* GtkAlignment seems to be the simplest way to put padding round things */
2270 w = gtk_alignment_new(0, 0, 1, 1);
2271 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2272 gtk_container_add(GTK_CONTAINER(w), ww);
2275 w = gtk_frame_new("Preview of font");
2276 gtk_container_add(GTK_CONTAINER(w), ww);
2278 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2279 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2282 w = gtk_check_button_new_with_label("Show client-side fonts");
2283 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2284 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2285 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2286 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2288 fs->filter_buttons[i++] = w;
2289 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2290 w = gtk_check_button_new_with_label("Show server-side fonts");
2291 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2292 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2293 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2294 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2296 fs->filter_buttons[i++] = w;
2297 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2298 w = gtk_check_button_new_with_label("Show server-side font aliases");
2299 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2300 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2301 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2302 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2304 fs->filter_buttons[i++] = w;
2305 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2306 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2307 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2308 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2309 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2310 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2312 fs->filter_buttons[i++] = w;
2313 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2315 assert(i == lenof(fs->filter_buttons));
2316 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
2317 FONTFLAG_SERVERALIAS;
2318 unifontsel_set_filter_buttons(fs);
2321 * Go and find all the font names, and set up our master font
2324 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2325 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2326 for (i = 0; i < lenof(unifont_types); i++)
2327 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2328 unifontsel_add_entry, fs);
2331 * And set up the initial font names list.
2333 unifontsel_setup_familylist(fs);
2335 fs->selected = NULL;
2336 fs->selsize = fs->intendedsize = 13; /* random default */
2337 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2339 return (unifontsel *)fs;
2342 void unifontsel_destroy(unifontsel *fontsel)
2344 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2347 if (fs->preview_pixmap)
2348 gdk_pixmap_unref(fs->preview_pixmap);
2350 freetree234(fs->fonts_by_selorder);
2351 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2353 freetree234(fs->fonts_by_realname);
2355 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2359 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2361 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2362 int i, start, end, size;
2363 const char *fontname2 = NULL;
2367 * Provide a default if given an empty or null font name.
2369 if (!fontname || !*fontname)
2370 fontname = "fixed"; /* Pango zealots might prefer "Monospace 12" */
2373 * Call the canonify_fontname function.
2375 fontname = unifont_do_prefix(fontname, &start, &end);
2376 for (i = start; i < end; i++) {
2377 fontname2 = unifont_types[i]->canonify_fontname
2378 (GTK_WIDGET(fs->u.window), fontname, &size, FALSE);
2383 return; /* font name not recognised */
2386 * Now look up the canonified font name in our index.
2388 info = find234(fs->fonts_by_realname, (char *)fontname2,
2389 fontinfo_realname_find);
2392 * If we've found the font, and its size field is either
2393 * correct or zero (the latter indicating a scalable font),
2394 * then we're done. Otherwise, try looking up the original
2395 * font name instead.
2397 if (!info || (info->size != size && info->size != 0)) {
2398 info = find234(fs->fonts_by_realname, (char *)fontname,
2399 fontinfo_realname_find);
2400 if (!info || info->size != size)
2401 return; /* font name not in our index */
2405 * Now we've got a fontinfo structure and a font size, so we
2406 * know everything we need to fill in all the fields in the
2409 unifontsel_select_font(fs, info, size, 0, TRUE);
2412 char *unifontsel_get_name(unifontsel *fontsel)
2414 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2420 if (fs->selected->size == 0) {
2421 name = fs->selected->fontclass->scale_fontname
2422 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2427 return dupstr(fs->selected->realname);
2430 #endif /* GTK_CHECK_VERSION(2,0,0) */