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>
30 * - generalised style and padding polish
31 * + work out why the list boxes don't go all the way to the
32 * RHS of the dialog box
34 * - big testing and shakedown!
40 * - all the GDK font functions used in the x11font subclass are
41 * deprecated, so one day they may go away. When this happens -
42 * or before, if I'm feeling proactive - it oughtn't to be too
43 * difficult in principle to convert the whole thing to use
44 * actual Xlib font calls.
46 * - it would be nice if we could move the processing of
47 * underline and VT100 double width into this module, so that
48 * instead of using the ghastly pixmap-stretching technique
49 * everywhere we could tell the Pango backend to scale its
50 * fonts to double size properly and at full resolution.
51 * However, this requires me to learn how to make Pango stretch
52 * text to an arbitrary aspect ratio (for double-width only
53 * text, which perversely is harder than DW+DH), and right now
54 * I haven't the energy.
58 * Ad-hoc vtable mechanism to allow font structures to be
61 * Any instance of `unifont' used in the vtable functions will
62 * actually be the first element of a larger structure containing
63 * data specific to the subtype. This is permitted by the ISO C
64 * provision that one may safely cast between a pointer to a
65 * structure and a pointer to its first element.
68 #define FONTFLAG_CLIENTSIDE 0x0001
69 #define FONTFLAG_SERVERSIDE 0x0002
70 #define FONTFLAG_SERVERALIAS 0x0004
71 #define FONTFLAG_NONMONOSPACED 0x0008
73 typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
74 const char *family, const char *charset,
75 const char *style, const char *stylekey,
77 const struct unifont_vtable *fontclass);
79 struct unifont_vtable {
81 * `Methods' of the `class'.
83 unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
84 int shadowoffset, int shadowalways);
85 void (*destroy)(unifont *font);
86 void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
87 int x, int y, const char *string, int len, int wide,
88 int bold, int cellwidth);
89 void (*enum_fonts)(GtkWidget *widget,
90 fontsel_add_entry callback, void *callback_ctx);
91 char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
93 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
96 * `Static data members' of the `class'.
101 /* ----------------------------------------------------------------------
102 * GDK-based X11 font implementation.
105 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
106 int x, int y, const char *string, int len,
107 int wide, int bold, int cellwidth);
108 static unifont *x11font_create(GtkWidget *widget, const char *name,
110 int shadowoffset, int shadowalways);
111 static void x11font_destroy(unifont *font);
112 static void x11font_enum_fonts(GtkWidget *widget,
113 fontsel_add_entry callback, void *callback_ctx);
114 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
115 int *size, int resolve_aliases);
116 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
122 * Actual font objects. We store a number of these, for
123 * automatically guessed bold and wide variants.
125 * The parallel array `allocated' indicates whether we've
126 * tried to fetch a subfont already (thus distinguishing NULL
127 * because we haven't tried yet from NULL because we tried and
128 * failed, so that we don't keep trying and failing
134 * `sixteen_bit' is true iff the font object is indexed by
135 * values larger than a byte. That is, this flag tells us
136 * whether we use gdk_draw_text_wc() or gdk_draw_text().
140 * `variable' is true iff the font is non-fixed-pitch. This
141 * enables some code which takes greater care over character
142 * positioning during text drawing.
146 * Data passed in to unifont_create().
148 int wide, bold, shadowoffset, shadowalways;
151 static const struct unifont_vtable x11font_vtable = {
156 x11font_canonify_fontname,
157 x11font_scale_fontname,
161 char *x11_guess_derived_font_name(GdkFont *font, int bold, int wide)
163 XFontStruct *xfs = GDK_FONT_XFONT(font);
164 Display *disp = GDK_FONT_XDISPLAY(font);
165 Atom fontprop = XInternAtom(disp, "FONT", False);
167 if (XGetFontProperty(xfs, fontprop, &ret)) {
168 char *name = XGetAtomName(disp, (Atom)ret);
169 if (name && name[0] == '-') {
171 char *dupname, *extrafree = NULL, *ret;
175 p = q = dupname = dupstr(name); /* skip initial minus */
178 while (*p && nstr < lenof(strings)) {
181 strings[nstr++] = p+1;
186 if (nstr < lenof(strings))
187 return NULL; /* XLFD was malformed */
193 /* 4 is `wideness', which obviously may have changed. */
194 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
195 strings[4] = strings[5] = "*";
196 strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
199 ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
200 "-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
201 "-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
202 "-", strings[ 9], "-", strings[10], "-", strings[11],
203 "-", strings[12], NULL);
213 static int x11_font_width(GdkFont *font, int sixteen_bit)
219 return gdk_text_width(font, (const gchar *)&space, 2);
221 return gdk_char_width(font, '0');
225 static unifont *x11font_create(GtkWidget *widget, const char *name,
227 int shadowoffset, int shadowalways)
229 struct x11font *xfont;
233 Atom charset_registry, charset_encoding, spacing;
234 unsigned long registry_ret, encoding_ret, spacing_ret;
235 int pubcs, realcs, sixteen_bit, variable;
238 font = gdk_font_load(name);
242 xfs = GDK_FONT_XFONT(font);
243 disp = GDK_FONT_XDISPLAY(font);
245 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
246 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
248 pubcs = realcs = CS_NONE;
252 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
253 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
255 reg = XGetAtomName(disp, (Atom)registry_ret);
256 enc = XGetAtomName(disp, (Atom)encoding_ret);
258 char *encoding = dupcat(reg, "-", enc, NULL);
259 pubcs = realcs = charset_from_xenc(encoding);
262 * iso10646-1 is the only wide font encoding we
263 * support. In this case, we expect clients to give us
264 * UTF-8, which this module must internally convert
265 * into 16-bit Unicode.
267 if (!strcasecmp(encoding, "iso10646-1")) {
269 pubcs = realcs = CS_UTF8;
273 * Hack for X line-drawing characters: if the primary
274 * font is encoded as ISO-8859-1, and has valid glyphs
275 * in the first 32 char positions, it is assumed that
276 * those glyphs are the VT100 line-drawing character
279 * Actually, we'll hack even harder by only checking
280 * position 0x19 (vertical line, VT100 linedrawing
281 * `x'). Then we can check it easily by seeing if the
282 * ascent and descent differ.
284 if (pubcs == CS_ISO8859_1) {
285 int lb, rb, wid, asc, desc;
290 gdk_string_extents(font, text, &lb, &rb, &wid, &asc, &desc);
292 realcs = CS_ISO8859_1_X11;
299 spacing = XInternAtom(disp, "SPACING", False);
300 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
302 spc = XGetAtomName(disp, (Atom)spacing_ret);
304 if (spc && strchr("CcMm", spc[0]))
308 xfont = snew(struct x11font);
309 xfont->u.vt = &x11font_vtable;
310 xfont->u.width = x11_font_width(font, sixteen_bit);
311 xfont->u.ascent = font->ascent;
312 xfont->u.descent = font->descent;
313 xfont->u.height = xfont->u.ascent + xfont->u.descent;
314 xfont->u.public_charset = pubcs;
315 xfont->u.real_charset = realcs;
316 xfont->fonts[0] = font;
317 xfont->allocated[0] = TRUE;
318 xfont->sixteen_bit = sixteen_bit;
319 xfont->variable = variable;
322 xfont->shadowoffset = shadowoffset;
323 xfont->shadowalways = shadowalways;
325 for (i = 1; i < lenof(xfont->fonts); i++) {
326 xfont->fonts[i] = NULL;
327 xfont->allocated[i] = FALSE;
330 return (unifont *)xfont;
333 static void x11font_destroy(unifont *font)
335 struct x11font *xfont = (struct x11font *)font;
338 for (i = 0; i < lenof(xfont->fonts); i++)
340 gdk_font_unref(xfont->fonts[i]);
344 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
346 char *derived_name = x11_guess_derived_font_name
347 (xfont->fonts[0], sfid & 1, !!(sfid & 2));
348 xfont->fonts[sfid] = gdk_font_load(derived_name); /* may be NULL */
349 xfont->allocated[sfid] = TRUE;
353 static void x11font_really_draw_text(GdkDrawable *target, GdkFont *font,
354 GdkGC *gc, int x, int y,
355 const gchar *string, int clen, int nchars,
356 int shadowbold, int shadowoffset,
357 int fontvariable, int cellwidth)
359 int step = clen * nchars, nsteps = 1, centre = FALSE;
363 * In a variable-pitch font, we draw one character at a
364 * time, and centre it in the character cell.
371 while (nsteps-- > 0) {
374 X += (cellwidth - gdk_text_width(font, string, step)) / 2;
376 gdk_draw_text(target, font, gc, X, y, string, step);
378 gdk_draw_text(target, font, gc, X + shadowoffset, y, string, step);
385 static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
386 int x, int y, const char *string, int len,
387 int wide, int bold, int cellwidth)
389 struct x11font *xfont = (struct x11font *)font;
391 int shadowbold = FALSE;
392 int mult = (wide ? 2 : 1);
398 * Decide which subfont we're using, and whether we have to
401 if (xfont->shadowalways && bold) {
405 sfid = 2 * wide + bold;
406 if (!xfont->allocated[sfid])
407 x11_alloc_subfont(xfont, sfid);
408 if (bold && !xfont->fonts[sfid]) {
411 sfid = 2 * wide + bold;
412 if (!xfont->allocated[sfid])
413 x11_alloc_subfont(xfont, sfid);
416 if (!xfont->fonts[sfid])
417 return; /* we've tried our best, but no luck */
419 if (xfont->sixteen_bit) {
421 * This X font has 16-bit character indices, which means
422 * we expect our string to have been passed in UTF-8.
426 int nchars, maxchars, i;
429 * Convert the input string to wide-character Unicode.
432 for (i = 0; i < len; i++)
433 if ((unsigned char)string[i] <= 0x7F ||
434 (unsigned char)string[i] >= 0xC0)
436 wcs = snewn(maxchars+1, wchar_t);
437 nchars = charset_to_unicode((char **)&string, &len, wcs, maxchars,
438 CS_UTF8, NULL, NULL, 0);
439 assert(nchars <= maxchars);
442 xcs = snewn(nchars, XChar2b);
443 for (i = 0; i < nchars; i++) {
444 xcs[i].byte1 = wcs[i] >> 8;
445 xcs[i].byte2 = wcs[i];
448 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
449 (gchar *)xcs, 2, nchars,
450 shadowbold, xfont->shadowoffset,
451 xfont->variable, cellwidth * mult);
455 x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
457 shadowbold, xfont->shadowoffset,
458 xfont->variable, cellwidth * mult);
462 static void x11font_enum_fonts(GtkWidget *widget,
463 fontsel_add_entry callback, void *callback_ctx)
467 int nnames, i, max, tmpsize;
471 fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
473 XFreeFontNames(fontnames);
481 for (i = 0; i < nnames; i++) {
482 if (fontnames[i][0] == '-') {
484 * Dismember an XLFD and convert it into the format
485 * we'll be using in the font selector.
487 char *components[14];
488 char *p, *font, *style, *stylekey, *charset;
489 int j, weightkey, slantkey, setwidthkey;
490 int thistmpsize, fontsize, flags;
492 thistmpsize = 4 * strlen(fontnames[i]) + 256;
493 if (tmpsize < thistmpsize) {
494 tmpsize = thistmpsize;
495 tmp = sresize(tmp, tmpsize, char);
497 strcpy(tmp, fontnames[i]);
500 for (j = 0; j < 14; j++) {
504 while (*p && *p != '-')
510 * Font name is made up of fields 0 and 1, in reverse
511 * order with parentheses. (This is what the GTK 1.2 X
512 * font selector does, and it seems to come out
513 * looking reasonably sensible.)
516 p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
519 * Charset is made up of fields 12 and 13.
522 p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
525 * Style is a mixture of quite a lot of the fields,
526 * with some strange formatting.
529 p += sprintf(p, "%s", components[2][0] ? components[2] :
531 if (!g_strcasecmp(components[3], "i"))
532 p += sprintf(p, " italic");
533 else if (!g_strcasecmp(components[3], "o"))
534 p += sprintf(p, " oblique");
535 else if (!g_strcasecmp(components[3], "ri"))
536 p += sprintf(p, " reverse italic");
537 else if (!g_strcasecmp(components[3], "ro"))
538 p += sprintf(p, " reverse oblique");
539 else if (!g_strcasecmp(components[3], "ot"))
540 p += sprintf(p, " other-slant");
541 if (components[4][0] && g_strcasecmp(components[4], "normal"))
542 p += sprintf(p, " %s", components[4]);
543 if (!g_strcasecmp(components[10], "m"))
544 p += sprintf(p, " [M]");
545 if (!g_strcasecmp(components[10], "c"))
546 p += sprintf(p, " [C]");
547 if (components[5][0])
548 p += sprintf(p, " %s", components[5]);
551 * Style key is the same stuff as above, but with a
552 * couple of transformations done on it to make it
553 * sort more sensibly.
557 if (!g_strcasecmp(components[2], "medium") ||
558 !g_strcasecmp(components[2], "regular") ||
559 !g_strcasecmp(components[2], "normal") ||
560 !g_strcasecmp(components[2], "book"))
562 else if (!g_strncasecmp(components[2], "demi", 4) ||
563 !g_strncasecmp(components[2], "semi", 4))
567 if (!g_strcasecmp(components[3], "r"))
569 else if (!g_strncasecmp(components[3], "r", 1))
573 if (!g_strcasecmp(components[4], "normal"))
578 p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
580 strlen(components[2]), components[2],
582 strlen(components[3]), components[3],
584 strlen(components[4]), components[4],
585 strlen(components[10]), components[10],
586 strlen(components[5]), components[5]);
588 assert(p - tmp < thistmpsize);
591 * Size is in pixels, for our application, so we
592 * derive it directly from the pixel size field,
595 fontsize = atoi(components[6]);
598 * Flags: we need to know whether this is a monospaced
599 * font, which we do by examining the spacing field
602 flags = FONTFLAG_SERVERSIDE;
603 if (!strchr("CcMm", components[10][0]))
604 flags |= FONTFLAG_NONMONOSPACED;
607 * Not sure why, but sometimes the X server will
608 * deliver dummy font types in which fontsize comes
609 * out as zero. Filter those out.
612 callback(callback_ctx, fontnames[i], font, charset,
613 style, stylekey, fontsize, flags, &x11font_vtable);
616 * This isn't an XLFD, so it must be an alias.
617 * Transmit it with mostly null data.
619 * It would be nice to work out if it's monospaced
620 * here, but at the moment I can't see that being
621 * anything but computationally hideous. Ah well.
623 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
624 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
627 XFreeFontNames(fontnames);
630 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
631 int *size, int resolve_aliases)
634 * When given an X11 font name to try to make sense of for a
635 * font selector, we must attempt to load it (to see if it
636 * exists), and then canonify it by extracting its FONT
637 * property, which should give its full XLFD even if what we
638 * originally had was a wildcard.
640 * However, we must carefully avoid canonifying font
641 * _aliases_, unless specifically asked to, because the font
642 * selector treats them as worthwhile in their own right.
644 GdkFont *font = gdk_font_load(name);
647 Atom fontprop, fontprop2;
651 return NULL; /* didn't make sense to us, sorry */
655 xfs = GDK_FONT_XFONT(font);
656 disp = GDK_FONT_XDISPLAY(font);
657 fontprop = XInternAtom(disp, "FONT", False);
659 if (XGetFontProperty(xfs, fontprop, &ret)) {
660 char *newname = XGetAtomName(disp, (Atom)ret);
662 unsigned long fsize = 12;
664 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
665 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
667 gdk_font_unref(font);
668 return dupstr(name[0] == '-' || resolve_aliases ?
674 gdk_font_unref(font);
675 return NULL; /* something went wrong */
678 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
681 return NULL; /* shan't */
684 /* ----------------------------------------------------------------------
685 * Pango font implementation.
688 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
689 int x, int y, const char *string, int len,
690 int wide, int bold, int cellwidth);
691 static unifont *pangofont_create(GtkWidget *widget, const char *name,
693 int shadowoffset, int shadowalways);
694 static void pangofont_destroy(unifont *font);
695 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
697 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
698 int *size, int resolve_aliases);
699 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
707 PangoFontDescription *desc;
710 * The containing widget.
714 * Data passed in to unifont_create().
716 int bold, shadowoffset, shadowalways;
719 static const struct unifont_vtable pangofont_vtable = {
723 pangofont_enum_fonts,
724 pangofont_canonify_fontname,
725 pangofont_scale_fontname,
729 static unifont *pangofont_create(GtkWidget *widget, const char *name,
731 int shadowoffset, int shadowalways)
733 struct pangofont *pfont;
735 #ifndef PANGO_PRE_1POINT6
738 PangoFontDescription *desc;
740 PangoFontMetrics *metrics;
742 desc = pango_font_description_from_string(name);
745 ctx = gtk_widget_get_pango_context(widget);
747 pango_font_description_free(desc);
750 #ifndef PANGO_PRE_1POINT6
751 map = pango_context_get_font_map(ctx);
753 pango_font_description_free(desc);
756 fset = pango_font_map_load_fontset(map, ctx, desc,
757 pango_context_get_language(ctx));
759 fset = pango_context_load_fontset(ctx, desc,
760 pango_context_get_language(ctx));
763 pango_font_description_free(desc);
766 metrics = pango_fontset_get_metrics(fset);
768 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
769 pango_font_description_free(desc);
770 g_object_unref(fset);
774 pfont = snew(struct pangofont);
775 pfont->u.vt = &pangofont_vtable;
777 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
778 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
779 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
780 pfont->u.height = pfont->u.ascent + pfont->u.descent;
781 /* The Pango API is hardwired to UTF-8 */
782 pfont->u.public_charset = CS_UTF8;
783 pfont->u.real_charset = CS_UTF8;
786 pfont->widget = widget;
788 pfont->shadowoffset = shadowoffset;
789 pfont->shadowalways = shadowalways;
791 pango_font_metrics_unref(metrics);
793 return (unifont *)pfont;
796 static void pangofont_destroy(unifont *font)
798 struct pangofont *pfont = (struct pangofont *)font;
799 pango_font_description_free(pfont->desc);
800 g_object_unref(pfont->fset);
804 static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
805 int x, int y, const char *string, int len,
806 int wide, int bold, int cellwidth)
808 struct pangofont *pfont = (struct pangofont *)font;
811 int shadowbold = FALSE;
816 y -= pfont->u.ascent;
818 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
819 pango_layout_set_font_description(layout, pfont->desc);
820 if (bold > pfont->bold) {
821 if (pfont->shadowalways)
824 PangoFontDescription *desc2 =
825 pango_font_description_copy_static(pfont->desc);
826 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
827 pango_layout_set_font_description(layout, desc2);
835 * Extract a single UTF-8 character from the string.
839 (unsigned char)string[clen] >= 0x80 &&
840 (unsigned char)string[clen] < 0xC0)
843 pango_layout_set_text(layout, string, clen);
844 pango_layout_get_pixel_extents(layout, NULL, &rect);
845 gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2,
846 y + (pfont->u.height - rect.height)/2, layout);
848 gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2 + pfont->shadowoffset,
849 y + (pfont->u.height - rect.height)/2, layout);
856 g_object_unref(layout);
860 * Dummy size value to be used when converting a
861 * PangoFontDescription of a scalable font to a string for
864 #define PANGO_DUMMY_SIZE 12
866 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
870 #ifndef PANGO_PRE_1POINT6
873 PangoFontFamily **families;
876 ctx = gtk_widget_get_pango_context(widget);
881 * Ask Pango for a list of font families, and iterate through
884 #ifndef PANGO_PRE_1POINT6
885 map = pango_context_get_font_map(ctx);
888 pango_font_map_list_families(map, &families, &nfamilies);
890 pango_context_list_families(ctx, &families, &nfamilies);
892 for (i = 0; i < nfamilies; i++) {
893 PangoFontFamily *family = families[i];
894 const char *familyname;
896 PangoFontFace **faces;
900 * Set up our flags for this font family, and get the name
903 flags = FONTFLAG_CLIENTSIDE;
904 #ifndef PANGO_PRE_1POINT4
906 * In very early versions of Pango, we can't tell
907 * monospaced fonts from non-monospaced.
909 if (!pango_font_family_is_monospace(family))
910 flags |= FONTFLAG_NONMONOSPACED;
912 familyname = pango_font_family_get_name(family);
915 * Go through the available font faces in this family.
917 pango_font_family_list_faces(family, &faces, &nfaces);
918 for (j = 0; j < nfaces; j++) {
919 PangoFontFace *face = faces[j];
920 PangoFontDescription *desc;
921 const char *facename;
923 int k, nsizes, dummysize;
926 * Get the face name string.
928 facename = pango_font_face_get_face_name(face);
931 * Set up a font description with what we've got so
932 * far. We'll fill in the size field manually and then
933 * call pango_font_description_to_string() to give the
934 * full real name of the specific font.
936 desc = pango_font_face_describe(face);
939 * See if this font has a list of specific sizes.
941 #ifndef PANGO_PRE_1POINT4
942 pango_font_face_list_sizes(face, &sizes, &nsizes);
945 * In early versions of Pango, that call wasn't
946 * supported; we just have to assume everything is
953 * Write a single entry with a dummy size.
955 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
961 * If so, go through them one by one.
963 for (k = 0; k < nsizes; k++) {
967 pango_font_description_set_size(desc, sizes[k]);
969 fullname = pango_font_description_to_string(desc);
972 * Construct the sorting key for font styles.
978 n = pango_font_description_get_weight(desc);
979 /* Weight: normal, then lighter, then bolder */
980 if (n <= PANGO_WEIGHT_NORMAL)
981 n = PANGO_WEIGHT_NORMAL - n;
982 p += sprintf(p, "%4d", n);
984 n = pango_font_description_get_style(desc);
985 p += sprintf(p, " %2d", n);
987 n = pango_font_description_get_stretch(desc);
988 /* Stretch: closer to normal sorts earlier */
989 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
990 (n < PANGO_STRETCH_NORMAL);
991 p += sprintf(p, " %2d", n);
993 n = pango_font_description_get_variant(desc);
994 p += sprintf(p, " %2d", n);
999 * Got everything. Hand off to the callback.
1000 * (The charset string is NULL, because only
1001 * server-side X fonts use it.)
1003 callback(callback_ctx, fullname, familyname, NULL, facename,
1005 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1006 flags, &pangofont_vtable);
1010 if (sizes != &dummysize)
1013 pango_font_description_free(desc);
1020 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1021 int *size, int resolve_aliases)
1024 * When given a Pango font name to try to make sense of for a
1025 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1026 * extract its original size (in pixels) into the `size' field.
1029 #ifndef PANGO_PRE_1POINT6
1032 PangoFontDescription *desc;
1034 PangoFontMetrics *metrics;
1035 char *newname, *retname;
1037 desc = pango_font_description_from_string(name);
1040 ctx = gtk_widget_get_pango_context(widget);
1042 pango_font_description_free(desc);
1045 #ifndef PANGO_PRE_1POINT6
1046 map = pango_context_get_font_map(ctx);
1048 pango_font_description_free(desc);
1051 fset = pango_font_map_load_fontset(map, ctx, desc,
1052 pango_context_get_language(ctx));
1054 fset = pango_context_load_fontset(ctx, desc,
1055 pango_context_get_language(ctx));
1058 pango_font_description_free(desc);
1061 metrics = pango_fontset_get_metrics(fset);
1063 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1064 pango_font_description_free(desc);
1065 g_object_unref(fset);
1069 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1070 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1071 newname = pango_font_description_to_string(desc);
1072 retname = dupstr(newname);
1075 pango_font_metrics_unref(metrics);
1076 pango_font_description_free(desc);
1077 g_object_unref(fset);
1082 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1085 PangoFontDescription *desc;
1086 char *newname, *retname;
1088 desc = pango_font_description_from_string(name);
1091 pango_font_description_set_size(desc, size * PANGO_SCALE);
1092 newname = pango_font_description_to_string(desc);
1093 retname = dupstr(newname);
1095 pango_font_description_free(desc);
1100 /* ----------------------------------------------------------------------
1101 * Outermost functions which do the vtable dispatch.
1105 * Complete list of font-type subclasses. Listed in preference
1106 * order for unifont_create(). (That is, in the extremely unlikely
1107 * event that the same font name is valid as both a Pango and an
1108 * X11 font, it will be interpreted as the former in the absence
1109 * of an explicit type-disambiguating prefix.)
1111 static const struct unifont_vtable *unifont_types[] = {
1117 * Function which takes a font name and processes the optional
1118 * scheme prefix. Returns the tail of the font name suitable for
1119 * passing to individual font scheme functions, and also provides
1120 * a subrange of the unifont_types[] array above.
1122 * The return values `start' and `end' denote a half-open interval
1123 * in unifont_types[]; that is, the correct way to iterate over
1126 * for (i = start; i < end; i++) {...}
1128 static const char *unifont_do_prefix(const char *name, int *start, int *end)
1130 int colonpos = strcspn(name, ":");
1133 if (name[colonpos]) {
1135 * There's a colon prefix on the font name. Use it to work
1136 * out which subclass to use.
1138 for (i = 0; i < lenof(unifont_types); i++) {
1139 if (strlen(unifont_types[i]->prefix) == colonpos &&
1140 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
1143 return name + colonpos + 1;
1147 * None matched, so return an empty scheme list to prevent
1148 * any scheme from being called at all.
1151 return name + colonpos + 1;
1154 * No colon prefix, so just use all the subclasses.
1157 *end = lenof(unifont_types);
1162 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
1163 int bold, int shadowoffset, int shadowalways)
1167 name = unifont_do_prefix(name, &start, &end);
1169 for (i = start; i < end; i++) {
1170 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
1171 shadowoffset, shadowalways);
1175 return NULL; /* font not found in any scheme */
1178 void unifont_destroy(unifont *font)
1180 font->vt->destroy(font);
1183 void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
1184 int x, int y, const char *string, int len,
1185 int wide, int bold, int cellwidth)
1187 font->vt->draw_text(target, gc, font, x, y, string, len,
1188 wide, bold, cellwidth);
1191 /* ----------------------------------------------------------------------
1192 * Implementation of a unified font selector.
1195 typedef struct fontinfo fontinfo;
1197 typedef struct unifontsel_internal {
1198 /* This must be the structure's first element, for cross-casting */
1200 GtkListStore *family_model, *style_model, *size_model;
1201 GtkWidget *family_list, *style_list, *size_entry, *size_list;
1202 GtkWidget *filter_buttons[4];
1203 GtkWidget *preview_area;
1204 GdkPixmap *preview_pixmap;
1205 int preview_width, preview_height;
1206 GdkColor preview_fg, preview_bg;
1208 tree234 *fonts_by_realname, *fonts_by_selorder;
1210 int selsize, intendedsize;
1211 int inhibit_response; /* inhibit callbacks when we change GUI controls */
1212 } unifontsel_internal;
1215 * The structure held in the tree234s. All the string members are
1216 * part of the same allocated area, so don't need freeing
1221 char *family, *charset, *style, *stylekey;
1224 * Fallback sorting key, to permit multiple identical entries
1225 * to exist in the selorder tree.
1229 * Indices mapping fontinfo structures to indices in the list
1230 * boxes. sizeindex is irrelevant if the font is scalable
1233 int familyindex, styleindex, sizeindex;
1235 * The class of font.
1237 const struct unifont_vtable *fontclass;
1240 static int fontinfo_realname_compare(void *av, void *bv)
1242 fontinfo *a = (fontinfo *)av;
1243 fontinfo *b = (fontinfo *)bv;
1244 return g_strcasecmp(a->realname, b->realname);
1247 static int fontinfo_realname_find(void *av, void *bv)
1249 const char *a = (const char *)av;
1250 fontinfo *b = (fontinfo *)bv;
1251 return g_strcasecmp(a, b->realname);
1254 static int strnullcasecmp(const char *a, const char *b)
1259 * If exactly one of the inputs is NULL, it compares before
1262 if ((i = (!b) - (!a)) != 0)
1266 * NULL compares equal.
1272 * Otherwise, ordinary strcasecmp.
1274 return g_strcasecmp(a, b);
1277 static int fontinfo_selorder_compare(void *av, void *bv)
1279 fontinfo *a = (fontinfo *)av;
1280 fontinfo *b = (fontinfo *)bv;
1282 if ((i = strnullcasecmp(a->family, b->family)) != 0)
1284 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
1286 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
1288 if ((i = strnullcasecmp(a->style, b->style)) != 0)
1290 if (a->size != b->size)
1291 return (a->size < b->size ? -1 : +1);
1292 if (a->index != b->index)
1293 return (a->index < b->index ? -1 : +1);
1297 static void unifontsel_setup_familylist(unifontsel_internal *fs)
1300 int i, listindex, minpos = -1, maxpos = -1;
1301 char *currfamily = NULL;
1304 gtk_list_store_clear(fs->family_model);
1308 * Search through the font tree for anything matching our
1309 * current filter criteria. When we find one, add its font
1310 * name to the list box.
1312 for (i = 0 ;; i++) {
1313 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1315 * info may be NULL if we've just run off the end of the
1316 * tree. We must still do a processing pass in that
1317 * situation, in case we had an unfinished font record in
1320 if (info && (info->flags &~ fs->filter_flags)) {
1321 info->familyindex = -1;
1322 continue; /* we're filtering out this font */
1324 if (!info || strnullcasecmp(currfamily, info->family)) {
1326 * We've either finished a family, or started a new
1330 gtk_list_store_append(fs->family_model, &iter);
1331 gtk_list_store_set(fs->family_model, &iter,
1332 0, currfamily, 1, minpos, 2, maxpos+1, -1);
1337 currfamily = info->family;
1341 break; /* now we're done */
1342 info->familyindex = listindex;
1347 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
1351 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
1352 char *currcs = NULL, *currstyle = NULL;
1355 gtk_list_store_clear(fs->style_model);
1360 * Search through the font tree for anything matching our
1361 * current filter criteria. When we find one, add its charset
1362 * and/or style name to the list box.
1364 for (i = start; i <= end; 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 * relevant data. We must still do a processing pass in
1372 * that situation, in case we had an unfinished font
1373 * record in progress.
1375 if (info && (info->flags &~ fs->filter_flags)) {
1376 info->styleindex = -1;
1377 continue; /* we're filtering out this font */
1379 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
1380 strnullcasecmp(currstyle, info->style)) {
1382 * We've either finished a style/charset, or started a
1387 gtk_list_store_append(fs->style_model, &iter);
1388 gtk_list_store_set(fs->style_model, &iter,
1389 0, currstyle, 1, minpos, 2, maxpos+1,
1395 if (info->charset && strnullcasecmp(currcs, info->charset)) {
1396 gtk_list_store_append(fs->style_model, &iter);
1397 gtk_list_store_set(fs->style_model, &iter,
1398 0, info->charset, 1, -1, 2, -1,
1402 currcs = info->charset;
1403 currstyle = info->style;
1407 break; /* now we're done */
1408 info->styleindex = listindex;
1413 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
1415 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
1423 gtk_list_store_clear(fs->size_model);
1427 * Search through the font tree for anything matching our
1428 * current filter criteria. When we find one, add its font
1429 * name to the list box.
1431 for (i = start; i < end; i++) {
1432 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
1433 if (info->flags &~ fs->filter_flags) {
1434 info->sizeindex = -1;
1435 continue; /* we're filtering out this font */
1438 sprintf(sizetext, "%d", info->size);
1439 info->sizeindex = listindex;
1440 gtk_list_store_append(fs->size_model, &iter);
1441 gtk_list_store_set(fs->size_model, &iter,
1442 0, sizetext, 1, i, 2, info->size, -1);
1450 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
1451 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
1452 gtk_list_store_append(fs->size_model, &iter);
1453 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
1454 2, unifontsel_default_sizes[j], -1);
1461 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
1465 for (i = 0; i < lenof(fs->filter_buttons); i++) {
1466 int flagbit = GPOINTER_TO_INT(gtk_object_get_data
1467 (GTK_OBJECT(fs->filter_buttons[i]),
1469 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
1470 !!(fs->filter_flags & flagbit));
1474 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
1477 char *sizename = NULL;
1478 fontinfo *info = fs->selected;
1481 sizename = info->fontclass->scale_fontname
1482 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
1483 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
1484 sizename ? sizename : info->realname,
1485 FALSE, FALSE, 0, 0);
1489 if (fs->preview_pixmap) {
1490 GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
1491 gdk_gc_set_foreground(gc, &fs->preview_bg);
1492 gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
1493 fs->preview_width, fs->preview_height);
1494 gdk_gc_set_foreground(gc, &fs->preview_fg);
1497 * The pangram used here is rather carefully
1498 * constructed: it contains a sequence of very narrow
1499 * letters (`jil') and a pair of adjacent very wide
1502 * If the user selects a proportional font, it will be
1503 * coerced into fixed-width character cells when used
1504 * in the actual terminal window. We therefore display
1505 * it the same way in the preview pane, so as to show
1506 * it the way it will actually be displayed - and we
1507 * deliberately pick a pangram which will show the
1508 * resulting miskerning at its worst.
1510 * We aren't trying to sell people these fonts; we're
1511 * trying to let them make an informed choice. Better
1512 * that they find out the problems with using
1513 * proportional fonts in terminal windows here than
1514 * that they go to the effort of selecting their font
1515 * and _then_ realise it was a mistake.
1517 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1519 "bankrupt jilted showmen quiz convex fogey",
1520 41, FALSE, FALSE, font->width);
1521 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1522 0, font->ascent + font->height,
1523 "BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
1524 41, FALSE, FALSE, font->width);
1526 * The ordering of punctuation here is also selected
1527 * with some specific aims in mind. I put ` and '
1528 * together because some software (and people) still
1529 * use them as matched quotes no matter what Unicode
1530 * might say on the matter, so people can quickly
1531 * check whether they look silly in a candidate font.
1532 * The sequence #_@ is there to let people judge the
1533 * suitability of the underscore as an effectively
1534 * alphabetic character (since that's how it's often
1535 * used in practice, at least by programmers).
1537 info->fontclass->draw_text(fs->preview_pixmap, gc, font,
1538 0, font->ascent + font->height * 2,
1539 "0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
1540 42, FALSE, FALSE, font->width);
1543 gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
1546 info->fontclass->destroy(font);
1551 static void unifontsel_select_font(unifontsel_internal *fs,
1552 fontinfo *info, int size, int leftlist,
1553 int size_is_explicit)
1557 GtkTreePath *treepath;
1560 fs->inhibit_response = TRUE;
1562 fs->selected = info;
1564 if (size_is_explicit)
1565 fs->intendedsize = size;
1568 * Find the index of this fontinfo in the selorder list.
1571 findpos234(fs->fonts_by_selorder, info, NULL, &index);
1575 * Adjust the font selector flags and redo the font family
1576 * list box, if necessary.
1578 if (leftlist <= 0 &&
1579 (fs->filter_flags | info->flags) != fs->filter_flags) {
1580 fs->filter_flags |= info->flags;
1581 unifontsel_set_filter_buttons(fs);
1582 unifontsel_setup_familylist(fs);
1586 * Find the appropriate family name and select it in the list.
1588 assert(info->familyindex >= 0);
1589 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
1590 gtk_tree_selection_select_path
1591 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
1593 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
1594 treepath, NULL, FALSE, 0.0, 0.0);
1595 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
1596 gtk_tree_path_free(treepath);
1599 * Now set up the font style list.
1601 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
1602 1, &minval, 2, &maxval, -1);
1604 unifontsel_setup_stylelist(fs, minval, maxval);
1607 * Find the appropriate style name and select it in the list.
1610 assert(info->styleindex >= 0);
1611 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
1612 gtk_tree_selection_select_path
1613 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
1615 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
1616 treepath, NULL, FALSE, 0.0, 0.0);
1617 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
1619 gtk_tree_path_free(treepath);
1622 * And set up the size list.
1624 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
1625 1, &minval, 2, &maxval, -1);
1627 unifontsel_setup_sizelist(fs, minval, maxval);
1630 * Find the appropriate size, and select it in the list.
1633 assert(info->sizeindex >= 0);
1634 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
1635 gtk_tree_selection_select_path
1636 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
1638 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1639 treepath, NULL, FALSE, 0.0, 0.0);
1640 gtk_tree_path_free(treepath);
1644 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
1645 if (unifontsel_default_sizes[j] == size) {
1646 treepath = gtk_tree_path_new_from_indices(j, -1);
1647 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
1648 treepath, NULL, FALSE);
1649 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
1650 treepath, NULL, FALSE, 0.0,
1652 gtk_tree_path_free(treepath);
1657 * And set up the font size text entry box.
1661 sprintf(sizetext, "%d", size);
1662 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
1666 unifontsel_setup_sizelist(fs, 0, 0);
1667 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
1671 * Grey out the font size edit box if we're not using a
1674 gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
1675 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
1677 unifontsel_draw_preview_text(fs);
1679 fs->inhibit_response = FALSE;
1682 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
1684 unifontsel_internal *fs = (unifontsel_internal *)data;
1685 int newstate = gtk_toggle_button_get_active(tb);
1687 int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
1691 newflags = fs->filter_flags | flagbit;
1693 newflags = fs->filter_flags & ~flagbit;
1695 if (fs->filter_flags != newflags) {
1696 fs->filter_flags = newflags;
1697 unifontsel_setup_familylist(fs);
1701 static void unifontsel_add_entry(void *ctx, const char *realfontname,
1702 const char *family, const char *charset,
1703 const char *style, const char *stylekey,
1704 int size, int flags,
1705 const struct unifont_vtable *fontclass)
1707 unifontsel_internal *fs = (unifontsel_internal *)ctx;
1712 totalsize = sizeof(fontinfo) + strlen(realfontname) +
1713 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
1714 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
1715 info = (fontinfo *)smalloc(totalsize);
1716 info->fontclass = fontclass;
1717 p = (char *)info + sizeof(fontinfo);
1719 strcpy(p, realfontname);
1726 info->family = NULL;
1732 info->charset = NULL;
1741 strcpy(p, stylekey);
1744 info->stylekey = NULL;
1745 assert(p - (char *)info <= totalsize);
1747 info->flags = flags;
1748 info->index = count234(fs->fonts_by_selorder);
1751 * It's just conceivable that a misbehaving font enumerator
1752 * might tell us about the same font real name more than once,
1753 * in which case we should silently drop the new one.
1755 if (add234(fs->fonts_by_realname, info) != info) {
1760 * However, we should never get a duplicate key in the
1761 * selorder tree, because the index field carefully
1762 * disambiguates otherwise identical records.
1764 add234(fs->fonts_by_selorder, info);
1767 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
1770 fontinfo info2, *below, *above;
1774 * Copy the info structure. This doesn't copy its dynamic
1775 * string fields, but that's unimportant because all we're
1776 * going to do is to adjust the size field and use it in one
1780 info2.size = fs->intendedsize;
1783 * Search in the tree to find the fontinfo structure which
1784 * best approximates the size the user last requested.
1786 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
1788 above = index234(fs->fonts_by_selorder, pos+1);
1791 * See if we've found it exactly, which is an easy special
1792 * case. If we have, it'll be in `below' and not `above',
1793 * because we did a REL234_LE rather than REL234_LT search.
1795 if (!fontinfo_selorder_compare(&info2, below))
1799 * Now we've either found two suitable fonts, one smaller and
1800 * one larger, or we're at one or other extreme end of the
1801 * scale. Find out which, by NULLing out either of below and
1802 * above if it differs from this one in any respect but size
1803 * (and the disambiguating index field). Bear in mind, also,
1804 * that either one might _already_ be NULL if we're at the
1805 * extreme ends of the font list.
1808 info2.size = below->size;
1809 info2.index = below->index;
1810 if (fontinfo_selorder_compare(&info2, below))
1814 info2.size = above->size;
1815 info2.index = above->index;
1816 if (fontinfo_selorder_compare(&info2, above))
1821 * Now return whichever of above and below is non-NULL, if
1822 * that's unambiguous.
1830 * And now we really do have to make a choice about whether to
1831 * round up or down. We'll do it by rounding to nearest,
1832 * breaking ties by rounding up.
1834 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
1840 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
1842 unifontsel_internal *fs = (unifontsel_internal *)data;
1843 GtkTreeModel *treemodel;
1844 GtkTreeIter treeiter;
1848 if (fs->inhibit_response) /* we made this change ourselves */
1851 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1854 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
1855 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1856 info = update_for_intended_size(fs, info);
1858 return; /* _shouldn't_ happen unless font list is completely funted */
1860 fs->selsize = fs->intendedsize; /* font is scalable */
1861 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
1865 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
1867 unifontsel_internal *fs = (unifontsel_internal *)data;
1868 GtkTreeModel *treemodel;
1869 GtkTreeIter treeiter;
1873 if (fs->inhibit_response) /* we made this change ourselves */
1876 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1879 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
1881 return; /* somehow a charset heading got clicked */
1882 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1883 info = update_for_intended_size(fs, info);
1885 return; /* _shouldn't_ happen unless font list is completely funted */
1887 fs->selsize = fs->intendedsize; /* font is scalable */
1888 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
1892 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
1894 unifontsel_internal *fs = (unifontsel_internal *)data;
1895 GtkTreeModel *treemodel;
1896 GtkTreeIter treeiter;
1900 if (fs->inhibit_response) /* we made this change ourselves */
1903 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
1906 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
1907 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1908 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
1911 static void size_entry_changed(GtkEditable *ed, gpointer data)
1913 unifontsel_internal *fs = (unifontsel_internal *)data;
1917 if (fs->inhibit_response) /* we made this change ourselves */
1920 text = gtk_entry_get_text(GTK_ENTRY(ed));
1924 assert(fs->selected->size == 0);
1925 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
1929 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
1930 GtkTreeViewColumn *column, gpointer data)
1932 unifontsel_internal *fs = (unifontsel_internal *)data;
1934 int minval, newsize;
1935 fontinfo *info, *newinfo;
1938 if (fs->inhibit_response) /* we made this change ourselves */
1941 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
1942 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
1943 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
1945 newname = info->fontclass->canonify_fontname
1946 (GTK_WIDGET(fs->u.window), info->realname, &newsize, TRUE);
1947 newinfo = find234(fs->fonts_by_realname, (char *)newname,
1948 fontinfo_realname_find);
1951 return; /* font name not in our index */
1952 if (newinfo == info)
1953 return; /* didn't change under canonification => not an alias */
1954 unifontsel_select_font(fs, newinfo,
1955 newinfo->size ? newinfo->size : newsize,
1960 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
1963 unifontsel_internal *fs = (unifontsel_internal *)data;
1965 if (fs->preview_pixmap) {
1966 gdk_draw_pixmap(widget->window,
1967 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
1969 event->area.x, event->area.y,
1970 event->area.x, event->area.y,
1971 event->area.width, event->area.height);
1976 static gint unifontsel_configure_area(GtkWidget *widget,
1977 GdkEventConfigure *event, gpointer data)
1979 unifontsel_internal *fs = (unifontsel_internal *)data;
1980 int ox, oy, nx, ny, x, y;
1983 * Enlarge the pixmap, but never shrink it.
1985 ox = fs->preview_width;
1986 oy = fs->preview_height;
1989 if (x > ox || y > oy) {
1990 if (fs->preview_pixmap)
1991 gdk_pixmap_unref(fs->preview_pixmap);
1993 nx = (x > ox ? x : ox);
1994 ny = (y > oy ? y : oy);
1995 fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
1996 fs->preview_width = nx;
1997 fs->preview_height = ny;
1999 unifontsel_draw_preview_text(fs);
2002 gdk_window_invalidate_rect(widget->window, NULL, FALSE);
2007 unifontsel *unifontsel_new(const char *wintitle)
2009 unifontsel_internal *fs = snew(unifontsel_internal);
2010 GtkWidget *table, *label, *w, *ww, *scroll;
2011 GtkListStore *model;
2012 GtkTreeViewColumn *column;
2013 int lists_height, preview_height, font_width, style_width, size_width;
2016 fs->inhibit_response = FALSE;
2020 * Invent some magic size constants.
2023 label = gtk_label_new("Quite Long Font Name (Foundry)");
2024 gtk_widget_size_request(label, &req);
2025 font_width = req.width;
2026 lists_height = 14 * req.height;
2027 preview_height = 5 * req.height;
2028 gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
2029 gtk_widget_size_request(label, &req);
2030 style_width = req.width;
2031 gtk_label_set_text(GTK_LABEL(label), "48000");
2032 gtk_widget_size_request(label, &req);
2033 size_width = req.width;
2034 #if GTK_CHECK_VERSION(2,10,0)
2035 g_object_ref_sink(label);
2036 g_object_unref(label);
2038 gtk_object_sink(GTK_OBJECT(label));
2043 * Create the dialog box and initialise the user-visible
2044 * fields in the returned structure.
2046 fs->u.user_data = NULL;
2047 fs->u.window = GTK_WINDOW(gtk_dialog_new());
2048 gtk_window_set_title(fs->u.window, wintitle);
2049 fs->u.cancel_button = gtk_dialog_add_button
2050 (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
2051 fs->u.ok_button = gtk_dialog_add_button
2052 (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
2053 gtk_widget_grab_default(fs->u.ok_button);
2056 * Now set up the internal fields, including in particular all
2057 * the controls that actually allow the user to select fonts.
2059 table = gtk_table_new(3, 8, FALSE);
2060 gtk_widget_show(table);
2061 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
2062 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
2063 table, TRUE, TRUE, 0);
2065 label = gtk_label_new_with_mnemonic("_Font:");
2066 gtk_widget_show(label);
2067 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2068 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
2071 * The Font list box displays only a string, but additionally
2072 * stores two integers which give the limits within the
2073 * tree234 of the font entries covered by this list entry.
2075 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2076 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2077 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2078 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2080 column = gtk_tree_view_column_new_with_attributes
2081 ("Font", gtk_cell_renderer_text_new(),
2082 "text", 0, (char *)NULL);
2083 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2084 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2085 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2086 "changed", G_CALLBACK(family_changed), fs);
2087 g_signal_connect(G_OBJECT(w), "row-activated",
2088 G_CALLBACK(alias_resolve), fs);
2090 scroll = gtk_scrolled_window_new(NULL, NULL);
2091 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2093 gtk_container_add(GTK_CONTAINER(scroll), w);
2094 gtk_widget_show(scroll);
2095 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2096 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2097 gtk_widget_set_size_request(scroll, font_width, lists_height);
2098 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
2099 GTK_EXPAND | GTK_FILL, 0, 0);
2100 fs->family_model = model;
2101 fs->family_list = w;
2103 label = gtk_label_new_with_mnemonic("_Style:");
2104 gtk_widget_show(label);
2105 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2106 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
2109 * The Style list box can contain insensitive elements
2110 * (character set headings for server-side fonts), so we add
2111 * an extra column to the list store to hold that information.
2113 model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
2115 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2116 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2117 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2119 column = gtk_tree_view_column_new_with_attributes
2120 ("Style", gtk_cell_renderer_text_new(),
2121 "text", 0, "sensitive", 3, (char *)NULL);
2122 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2123 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2124 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2125 "changed", G_CALLBACK(style_changed), fs);
2127 scroll = gtk_scrolled_window_new(NULL, NULL);
2128 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2130 gtk_container_add(GTK_CONTAINER(scroll), w);
2131 gtk_widget_show(scroll);
2132 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2133 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2134 gtk_widget_set_size_request(scroll, style_width, lists_height);
2135 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
2136 GTK_EXPAND | GTK_FILL, 0, 0);
2137 fs->style_model = model;
2140 label = gtk_label_new_with_mnemonic("Si_ze:");
2141 gtk_widget_show(label);
2142 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
2143 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
2146 * The Size label attaches primarily to a text input box so
2147 * that the user can select a size of their choice. The list
2148 * of available sizes is secondary.
2150 fs->size_entry = w = gtk_entry_new();
2151 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
2152 gtk_widget_set_size_request(w, size_width, -1);
2154 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
2155 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
2158 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
2159 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
2160 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
2162 column = gtk_tree_view_column_new_with_attributes
2163 ("Size", gtk_cell_renderer_text_new(),
2164 "text", 0, (char *)NULL);
2165 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
2166 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
2167 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
2168 "changed", G_CALLBACK(size_changed), fs);
2170 scroll = gtk_scrolled_window_new(NULL, NULL);
2171 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
2173 gtk_container_add(GTK_CONTAINER(scroll), w);
2174 gtk_widget_show(scroll);
2175 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
2176 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
2177 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
2178 GTK_EXPAND | GTK_FILL, 0, 0);
2179 fs->size_model = model;
2182 fs->preview_area = gtk_drawing_area_new();
2183 fs->preview_pixmap = NULL;
2184 fs->preview_width = 0;
2185 fs->preview_height = 0;
2186 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
2187 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
2188 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
2189 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
2191 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
2193 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
2194 GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
2195 gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
2196 GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
2197 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
2198 gtk_widget_show(fs->preview_area);
2199 ww = fs->preview_area;
2200 w = gtk_frame_new(NULL);
2201 gtk_container_add(GTK_CONTAINER(w), ww);
2204 /* GtkAlignment seems to be the simplest way to put padding round things */
2205 w = gtk_alignment_new(0, 0, 1, 1);
2206 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
2207 gtk_container_add(GTK_CONTAINER(w), ww);
2210 w = gtk_frame_new("Preview of font");
2211 gtk_container_add(GTK_CONTAINER(w), ww);
2213 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
2214 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
2217 * FIXME: preview widget
2220 w = gtk_check_button_new_with_label("Show client-side fonts");
2221 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2222 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
2223 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2224 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2226 fs->filter_buttons[i++] = w;
2227 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
2228 w = gtk_check_button_new_with_label("Show server-side fonts");
2229 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2230 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
2231 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2232 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2234 fs->filter_buttons[i++] = w;
2235 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
2236 w = gtk_check_button_new_with_label("Show server-side font aliases");
2237 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2238 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
2239 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2240 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2242 fs->filter_buttons[i++] = w;
2243 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
2244 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
2245 gtk_object_set_data(GTK_OBJECT(w), "user-data",
2246 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
2247 gtk_signal_connect(GTK_OBJECT(w), "toggled",
2248 GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
2250 fs->filter_buttons[i++] = w;
2251 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
2253 assert(i == lenof(fs->filter_buttons));
2254 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE;
2255 unifontsel_set_filter_buttons(fs);
2258 * Go and find all the font names, and set up our master font
2261 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
2262 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
2263 for (i = 0; i < lenof(unifont_types); i++)
2264 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
2265 unifontsel_add_entry, fs);
2268 * And set up the initial font names list.
2270 unifontsel_setup_familylist(fs);
2272 fs->selected = NULL;
2274 return (unifontsel *)fs;
2277 void unifontsel_destroy(unifontsel *fontsel)
2279 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2282 if (fs->preview_pixmap)
2283 gdk_pixmap_unref(fs->preview_pixmap);
2285 freetree234(fs->fonts_by_selorder);
2286 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
2288 freetree234(fs->fonts_by_realname);
2290 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
2294 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
2296 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2297 int i, start, end, size;
2298 const char *fontname2 = NULL;
2302 * Provide a default if given an empty or null font name.
2304 if (!fontname || !*fontname)
2305 fontname = "fixed"; /* Pango zealots might prefer "Monospace 12" */
2308 * Call the canonify_fontname function.
2310 fontname = unifont_do_prefix(fontname, &start, &end);
2311 for (i = start; i < end; i++) {
2312 fontname2 = unifont_types[i]->canonify_fontname
2313 (GTK_WIDGET(fs->u.window), fontname, &size, FALSE);
2318 return; /* font name not recognised */
2321 * Now look up the canonified font name in our index.
2323 info = find234(fs->fonts_by_realname, (char *)fontname2,
2324 fontinfo_realname_find);
2327 * If we've found the font, and its size field is either
2328 * correct or zero (the latter indicating a scalable font),
2329 * then we're done. Otherwise, try looking up the original
2330 * font name instead.
2332 if (!info || (info->size != size && info->size != 0)) {
2333 info = find234(fs->fonts_by_realname, (char *)fontname,
2334 fontinfo_realname_find);
2335 if (!info || info->size != size)
2336 return; /* font name not in our index */
2340 * Now we've got a fontinfo structure and a font size, so we
2341 * know everything we need to fill in all the fields in the
2344 unifontsel_select_font(fs, info, size, 0, TRUE);
2347 char *unifontsel_get_name(unifontsel *fontsel)
2349 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
2352 assert(fs->selected);
2354 if (fs->selected->size == 0) {
2355 name = fs->selected->fontclass->scale_fontname
2356 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
2361 return dupstr(fs->selected->realname);