2 * Unified font management for GTK.
4 * PuTTY is willing to use both old-style X server-side bitmap
5 * fonts _and_ GTK2/Pango client-side fonts. This requires us to
6 * do a bit of work to wrap the two wildly different APIs into
7 * forms the rest of the code can switch between seamlessly, and
8 * also requires a custom font selector capable of handling both
16 #include <gdk/gdkkeysyms.h>
19 #include <X11/Xutil.h>
20 #include <X11/Xatom.h>
29 * - it would be nice to have a display of the current font name,
30 * and in particular whether it's client- or server-side,
31 * during the progress of the font selector.
33 * - it would be nice if we could move the processing of
34 * underline and VT100 double width into this module, so that
35 * instead of using the ghastly pixmap-stretching technique
36 * everywhere we could tell the Pango backend to scale its
37 * fonts to double size properly and at full resolution.
38 * However, this requires me to learn how to make Pango stretch
39 * text to an arbitrary aspect ratio (for double-width only
40 * text, which perversely is harder than DW+DH), and right now
41 * I haven't the energy.
45 * Ad-hoc vtable mechanism to allow font structures to be
48 * Any instance of `unifont' used in the vtable functions will
49 * actually be the first element of a larger structure containing
50 * data specific to the subtype. This is permitted by the ISO C
51 * provision that one may safely cast between a pointer to a
52 * structure and a pointer to its first element.
55 #define FONTFLAG_CLIENTSIDE 0x0001
56 #define FONTFLAG_SERVERSIDE 0x0002
57 #define FONTFLAG_SERVERALIAS 0x0004
58 #define FONTFLAG_NONMONOSPACED 0x0008
60 #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
62 typedef void (*fontsel_add_entry
)(void *ctx
, const char *realfontname
,
63 const char *family
, const char *charset
,
64 const char *style
, const char *stylekey
,
66 const struct unifont_vtable
*fontclass
);
68 struct unifont_vtable
{
70 * `Methods' of the `class'.
72 unifont
*(*create
)(GtkWidget
*widget
, const char *name
, int wide
, int bold
,
73 int shadowoffset
, int shadowalways
);
74 unifont
*(*create_fallback
)(GtkWidget
*widget
, int height
, int wide
,
75 int bold
, int shadowoffset
, int shadowalways
);
76 void (*destroy
)(unifont
*font
);
77 int (*has_glyph
)(unifont
*font
, wchar_t glyph
);
78 void (*draw_text
)(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
79 int x
, int y
, const wchar_t *string
, int len
, int wide
,
80 int bold
, int cellwidth
);
81 void (*enum_fonts
)(GtkWidget
*widget
,
82 fontsel_add_entry callback
, void *callback_ctx
);
83 char *(*canonify_fontname
)(GtkWidget
*widget
, const char *name
, int *size
,
84 int *flags
, int resolve_aliases
);
85 char *(*scale_fontname
)(GtkWidget
*widget
, const char *name
, int size
);
88 * `Static data members' of the `class'.
93 /* ----------------------------------------------------------------------
94 * X11 font implementation, directly using Xlib calls.
97 static int x11font_has_glyph(unifont
*font
, wchar_t glyph
);
98 static void x11font_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
99 int x
, int y
, const wchar_t *string
, int len
,
100 int wide
, int bold
, int cellwidth
);
101 static unifont
*x11font_create(GtkWidget
*widget
, const char *name
,
103 int shadowoffset
, int shadowalways
);
104 static void x11font_destroy(unifont
*font
);
105 static void x11font_enum_fonts(GtkWidget
*widget
,
106 fontsel_add_entry callback
, void *callback_ctx
);
107 static char *x11font_canonify_fontname(GtkWidget
*widget
, const char *name
,
108 int *size
, int *flags
,
109 int resolve_aliases
);
110 static char *x11font_scale_fontname(GtkWidget
*widget
, const char *name
,
116 * Actual font objects. We store a number of these, for
117 * automatically guessed bold and wide variants.
119 * The parallel array `allocated' indicates whether we've
120 * tried to fetch a subfont already (thus distinguishing NULL
121 * because we haven't tried yet from NULL because we tried and
122 * failed, so that we don't keep trying and failing
125 XFontStruct
*fonts
[4];
128 * `sixteen_bit' is true iff the font object is indexed by
129 * values larger than a byte. That is, this flag tells us
130 * whether we use XDrawString or XDrawString16, etc.
134 * `variable' is true iff the font is non-fixed-pitch. This
135 * enables some code which takes greater care over character
136 * positioning during text drawing.
140 * real_charset is the charset used when translating text into the
141 * font's internal encoding inside draw_text(). This need not be
142 * the same as the public_charset provided to the client; for
143 * example, public_charset might be CS_ISO8859_1 while
144 * real_charset is CS_ISO8859_1_X11.
148 * Data passed in to unifont_create().
150 int wide
, bold
, shadowoffset
, shadowalways
;
153 static const struct unifont_vtable x11font_vtable
= {
155 NULL
, /* no fallback fonts in X11 */
160 x11font_canonify_fontname
,
161 x11font_scale_fontname
,
165 static char *x11_guess_derived_font_name(XFontStruct
*xfs
, int bold
, int wide
)
167 Display
*disp
= GDK_DISPLAY();
168 Atom fontprop
= XInternAtom(disp
, "FONT", False
);
170 if (XGetFontProperty(xfs
, fontprop
, &ret
)) {
171 char *name
= XGetAtomName(disp
, (Atom
)ret
);
172 if (name
&& name
[0] == '-') {
174 char *dupname
, *extrafree
= NULL
, *ret
;
178 p
= q
= dupname
= dupstr(name
); /* skip initial minus */
181 while (*p
&& nstr
< lenof(strings
)) {
184 strings
[nstr
++] = p
+1;
189 if (nstr
< lenof(strings
))
190 return NULL
; /* XLFD was malformed */
196 /* 4 is `wideness', which obviously may have changed. */
197 /* 5 is additional style, which may be e.g. `ja' or `ko'. */
198 strings
[4] = strings
[5] = "*";
199 strings
[11] = extrafree
= dupprintf("%d", 2*atoi(strings
[11]));
202 ret
= dupcat("-", strings
[ 0], "-", strings
[ 1], "-", strings
[ 2],
203 "-", strings
[ 3], "-", strings
[ 4], "-", strings
[ 5],
204 "-", strings
[ 6], "-", strings
[ 7], "-", strings
[ 8],
205 "-", strings
[ 9], "-", strings
[10], "-", strings
[11],
206 "-", strings
[12], NULL
);
216 static int x11_font_width(XFontStruct
*xfs
, int sixteen_bit
)
222 return XTextWidth16(xfs
, &space
, 1);
224 return XTextWidth(xfs
, "0", 1);
228 static int x11_font_has_glyph(XFontStruct
*xfs
, int byte1
, int byte2
)
233 * Not to be confused with x11font_has_glyph, which is a method of
234 * the x11font 'class' and hence takes a unifont as argument. This
235 * is the low-level function which grubs about in an actual
236 * XFontStruct to see if a given glyph exists.
238 * We must do this ourselves rather than letting Xlib's
239 * XTextExtents16 do the job, because XTextExtents will helpfully
240 * substitute the font's default_char for any missing glyph and
241 * not tell us it did so, which precisely won't help us find out
242 * which glyphs _are_ missing.
244 * The man page for XQueryFont is rather confusing about how the
245 * per_char array in the XFontStruct is laid out, because it gives
246 * formulae for determining the two-byte X character code _from_
247 * an index into the per_char array. Going the other way, it's
250 * The valid character codes have byte1 between min_byte1 and
251 * max_byte1 inclusive, and byte2 between min_char_or_byte2 and
252 * max_char_or_byte2 inclusive. This gives a rectangle of size
253 * (max_byte2-min_byte1+1) by
254 * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the
255 * rectangle encoded in the per_char array. Hence, given a
256 * character code which is valid in the sense that it falls
257 * somewhere in that rectangle, its index in per_char is given by
260 * x = byte2 - min_char_or_byte2
261 * y = byte1 - min_byte1
262 * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x
264 * If min_byte1 and min_byte2 are both zero, that's a special case
265 * which can be treated as if min_byte2 was 1 instead, i.e. the
266 * per_char array just runs from min_char_or_byte2 to
267 * max_char_or_byte2 inclusive, and byte1 should always be zero.
270 if (byte2
< xfs
->min_char_or_byte2
|| byte2
> xfs
->max_char_or_byte2
)
273 if (xfs
->min_byte1
== 0 && xfs
->max_byte1
== 0) {
274 index
= byte2
- xfs
->min_char_or_byte2
;
276 if (byte1
< xfs
->min_byte1
|| byte1
> xfs
->max_byte1
)
278 index
= ((byte2
- xfs
->min_char_or_byte2
) +
279 ((byte1
- xfs
->min_byte1
) *
280 (xfs
->max_char_or_byte2
- xfs
->min_char_or_byte2
+ 1)));
283 if (!xfs
->per_char
) /* per_char NULL => everything in range exists */
286 return (xfs
->per_char
[index
].ascent
+ xfs
->per_char
[index
].descent
> 0 ||
287 xfs
->per_char
[index
].width
> 0);
290 static unifont
*x11font_create(GtkWidget
*widget
, const char *name
,
292 int shadowoffset
, int shadowalways
)
294 struct x11font
*xfont
;
296 Display
*disp
= GDK_DISPLAY();
297 Atom charset_registry
, charset_encoding
, spacing
;
298 unsigned long registry_ret
, encoding_ret
, spacing_ret
;
299 int pubcs
, realcs
, sixteen_bit
, variable
;
302 xfs
= XLoadQueryFont(disp
, name
);
306 charset_registry
= XInternAtom(disp
, "CHARSET_REGISTRY", False
);
307 charset_encoding
= XInternAtom(disp
, "CHARSET_ENCODING", False
);
309 pubcs
= realcs
= CS_NONE
;
313 if (XGetFontProperty(xfs
, charset_registry
, ®istry_ret
) &&
314 XGetFontProperty(xfs
, charset_encoding
, &encoding_ret
)) {
316 reg
= XGetAtomName(disp
, (Atom
)registry_ret
);
317 enc
= XGetAtomName(disp
, (Atom
)encoding_ret
);
319 char *encoding
= dupcat(reg
, "-", enc
, NULL
);
320 pubcs
= realcs
= charset_from_xenc(encoding
);
323 * iso10646-1 is the only wide font encoding we
324 * support. In this case, we expect clients to give us
325 * UTF-8, which this module must internally convert
326 * into 16-bit Unicode.
328 if (!strcasecmp(encoding
, "iso10646-1")) {
330 pubcs
= realcs
= CS_UTF8
;
334 * Hack for X line-drawing characters: if the primary font
335 * is encoded as ISO-8859-1, and has valid glyphs in the
336 * low character positions, it is assumed that those
337 * glyphs are the VT100 line-drawing character set.
339 if (pubcs
== CS_ISO8859_1
) {
341 for (ch
= 1; ch
< 32; ch
++)
342 if (!x11_font_has_glyph(xfs
, 0, ch
))
345 realcs
= CS_ISO8859_1_X11
;
352 spacing
= XInternAtom(disp
, "SPACING", False
);
353 if (XGetFontProperty(xfs
, spacing
, &spacing_ret
)) {
355 spc
= XGetAtomName(disp
, (Atom
)spacing_ret
);
357 if (spc
&& strchr("CcMm", spc
[0]))
361 xfont
= snew(struct x11font
);
362 xfont
->u
.vt
= &x11font_vtable
;
363 xfont
->u
.width
= x11_font_width(xfs
, sixteen_bit
);
364 xfont
->u
.ascent
= xfs
->ascent
;
365 xfont
->u
.descent
= xfs
->descent
;
366 xfont
->u
.height
= xfont
->u
.ascent
+ xfont
->u
.descent
;
367 xfont
->u
.public_charset
= pubcs
;
368 xfont
->u
.want_fallback
= TRUE
;
369 xfont
->real_charset
= realcs
;
370 xfont
->fonts
[0] = xfs
;
371 xfont
->allocated
[0] = TRUE
;
372 xfont
->sixteen_bit
= sixteen_bit
;
373 xfont
->variable
= variable
;
376 xfont
->shadowoffset
= shadowoffset
;
377 xfont
->shadowalways
= shadowalways
;
379 for (i
= 1; i
< lenof(xfont
->fonts
); i
++) {
380 xfont
->fonts
[i
] = NULL
;
381 xfont
->allocated
[i
] = FALSE
;
384 return (unifont
*)xfont
;
387 static void x11font_destroy(unifont
*font
)
389 Display
*disp
= GDK_DISPLAY();
390 struct x11font
*xfont
= (struct x11font
*)font
;
393 for (i
= 0; i
< lenof(xfont
->fonts
); i
++)
395 XFreeFont(disp
, xfont
->fonts
[i
]);
399 static void x11_alloc_subfont(struct x11font
*xfont
, int sfid
)
401 Display
*disp
= GDK_DISPLAY();
402 char *derived_name
= x11_guess_derived_font_name
403 (xfont
->fonts
[0], sfid
& 1, !!(sfid
& 2));
404 xfont
->fonts
[sfid
] = XLoadQueryFont(disp
, derived_name
);
405 xfont
->allocated
[sfid
] = TRUE
;
407 /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
410 static int x11font_has_glyph(unifont
*font
, wchar_t glyph
)
412 struct x11font
*xfont
= (struct x11font
*)font
;
414 if (xfont
->sixteen_bit
) {
416 * This X font has 16-bit character indices, which means
417 * we can directly use our Unicode input value.
419 return x11_font_has_glyph(xfont
->fonts
[0], glyph
>> 8, glyph
& 0xFF);
422 * This X font has 8-bit indices, so we must convert to the
423 * appropriate character set.
426 int sblen
= wc_to_mb(xfont
->real_charset
, 0, &glyph
, 1,
427 sbstring
, 2, "", NULL
, NULL
);
429 return FALSE
; /* not even in the charset */
431 return x11_font_has_glyph(xfont
->fonts
[0], 0,
432 (unsigned char)sbstring
[0]);
436 #if !GTK_CHECK_VERSION(2,0,0)
437 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
440 static void x11font_really_draw_text_16(GdkDrawable
*target
, XFontStruct
*xfs
,
442 const XChar2b
*string
, int nchars
,
444 int fontvariable
, int cellwidth
)
446 Display
*disp
= GDK_DISPLAY();
447 int step
, nsteps
, centre
;
451 * In a variable-pitch font, we draw one character at a
452 * time, and centre it in the character cell.
459 * In a fixed-pitch font, we can draw the whole lot in one go.
466 while (nsteps
-- > 0) {
469 X
+= (cellwidth
- XTextWidth16(xfs
, string
, step
)) / 2;
471 XDrawString16(disp
, GDK_DRAWABLE_XID(target
), gc
,
474 XDrawString16(disp
, GDK_DRAWABLE_XID(target
), gc
,
475 X
+ shadowoffset
, y
, string
, step
);
482 static void x11font_really_draw_text(GdkDrawable
*target
, XFontStruct
*xfs
,
484 const char *string
, int nchars
,
486 int fontvariable
, int cellwidth
)
488 Display
*disp
= GDK_DISPLAY();
489 int step
, nsteps
, centre
;
493 * In a variable-pitch font, we draw one character at a
494 * time, and centre it in the character cell.
501 * In a fixed-pitch font, we can draw the whole lot in one go.
508 while (nsteps
-- > 0) {
511 X
+= (cellwidth
- XTextWidth(xfs
, string
, step
)) / 2;
513 XDrawString(disp
, GDK_DRAWABLE_XID(target
), gc
,
516 XDrawString(disp
, GDK_DRAWABLE_XID(target
), gc
,
517 X
+ shadowoffset
, y
, string
, step
);
524 static void x11font_draw_text(GdkDrawable
*target
, GdkGC
*gdkgc
, unifont
*font
,
525 int x
, int y
, const wchar_t *string
, int len
,
526 int wide
, int bold
, int cellwidth
)
528 Display
*disp
= GDK_DISPLAY();
529 struct x11font
*xfont
= (struct x11font
*)font
;
530 GC gc
= GDK_GC_XGC(gdkgc
);
532 int shadowoffset
= 0;
533 int mult
= (wide ?
2 : 1);
539 * Decide which subfont we're using, and whether we have to
542 if (xfont
->shadowalways
&& bold
) {
543 shadowoffset
= xfont
->shadowoffset
;
546 sfid
= 2 * wide
+ bold
;
547 if (!xfont
->allocated
[sfid
])
548 x11_alloc_subfont(xfont
, sfid
);
549 if (bold
&& !xfont
->fonts
[sfid
]) {
551 shadowoffset
= xfont
->shadowoffset
;
552 sfid
= 2 * wide
+ bold
;
553 if (!xfont
->allocated
[sfid
])
554 x11_alloc_subfont(xfont
, sfid
);
557 if (!xfont
->fonts
[sfid
])
558 return; /* we've tried our best, but no luck */
560 XSetFont(disp
, gc
, xfont
->fonts
[sfid
]->fid
);
562 if (xfont
->sixteen_bit
) {
564 * This X font has 16-bit character indices, which means
565 * we can directly use our Unicode input string.
570 xcs
= snewn(len
, XChar2b
);
571 for (i
= 0; i
< len
; i
++) {
572 xcs
[i
].byte1
= string
[i
] >> 8;
573 xcs
[i
].byte2
= string
[i
];
576 x11font_really_draw_text_16(target
, xfont
->fonts
[sfid
], gc
, x
, y
,
577 xcs
, len
, shadowoffset
,
578 xfont
->variable
, cellwidth
* mult
);
582 * This X font has 8-bit indices, so we must convert to the
583 * appropriate character set.
585 char *sbstring
= snewn(len
+1, char);
586 int sblen
= wc_to_mb(xfont
->real_charset
, 0, string
, len
,
587 sbstring
, len
+1, ".", NULL
, NULL
);
588 x11font_really_draw_text(target
, xfont
->fonts
[sfid
], gc
, x
, y
,
589 sbstring
, sblen
, shadowoffset
,
590 xfont
->variable
, cellwidth
* mult
);
595 static void x11font_enum_fonts(GtkWidget
*widget
,
596 fontsel_add_entry callback
, void *callback_ctx
)
600 int nnames
, i
, max
, tmpsize
;
604 fontnames
= XListFonts(GDK_DISPLAY(), "*", max
, &nnames
);
606 XFreeFontNames(fontnames
);
614 for (i
= 0; i
< nnames
; i
++) {
615 if (fontnames
[i
][0] == '-') {
617 * Dismember an XLFD and convert it into the format
618 * we'll be using in the font selector.
620 char *components
[14];
621 char *p
, *font
, *style
, *stylekey
, *charset
;
622 int j
, weightkey
, slantkey
, setwidthkey
;
623 int thistmpsize
, fontsize
, flags
;
625 thistmpsize
= 4 * strlen(fontnames
[i
]) + 256;
626 if (tmpsize
< thistmpsize
) {
627 tmpsize
= thistmpsize
;
628 tmp
= sresize(tmp
, tmpsize
, char);
630 strcpy(tmp
, fontnames
[i
]);
633 for (j
= 0; j
< 14; j
++) {
637 while (*p
&& *p
!= '-')
643 * Font name is made up of fields 0 and 1, in reverse
644 * order with parentheses. (This is what the GTK 1.2 X
645 * font selector does, and it seems to come out
646 * looking reasonably sensible.)
649 p
+= 1 + sprintf(p
, "%s (%s)", components
[1], components
[0]);
652 * Charset is made up of fields 12 and 13.
655 p
+= 1 + sprintf(p
, "%s-%s", components
[12], components
[13]);
658 * Style is a mixture of quite a lot of the fields,
659 * with some strange formatting.
662 p
+= sprintf(p
, "%s", components
[2][0] ? components
[2] :
664 if (!g_strcasecmp(components
[3], "i"))
665 p
+= sprintf(p
, " italic");
666 else if (!g_strcasecmp(components
[3], "o"))
667 p
+= sprintf(p
, " oblique");
668 else if (!g_strcasecmp(components
[3], "ri"))
669 p
+= sprintf(p
, " reverse italic");
670 else if (!g_strcasecmp(components
[3], "ro"))
671 p
+= sprintf(p
, " reverse oblique");
672 else if (!g_strcasecmp(components
[3], "ot"))
673 p
+= sprintf(p
, " other-slant");
674 if (components
[4][0] && g_strcasecmp(components
[4], "normal"))
675 p
+= sprintf(p
, " %s", components
[4]);
676 if (!g_strcasecmp(components
[10], "m"))
677 p
+= sprintf(p
, " [M]");
678 if (!g_strcasecmp(components
[10], "c"))
679 p
+= sprintf(p
, " [C]");
680 if (components
[5][0])
681 p
+= sprintf(p
, " %s", components
[5]);
684 * Style key is the same stuff as above, but with a
685 * couple of transformations done on it to make it
686 * sort more sensibly.
690 if (!g_strcasecmp(components
[2], "medium") ||
691 !g_strcasecmp(components
[2], "regular") ||
692 !g_strcasecmp(components
[2], "normal") ||
693 !g_strcasecmp(components
[2], "book"))
695 else if (!g_strncasecmp(components
[2], "demi", 4) ||
696 !g_strncasecmp(components
[2], "semi", 4))
700 if (!g_strcasecmp(components
[3], "r"))
702 else if (!g_strncasecmp(components
[3], "r", 1))
706 if (!g_strcasecmp(components
[4], "normal"))
711 p
+= sprintf(p
, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
713 (int)strlen(components
[2]), components
[2],
715 (int)strlen(components
[3]), components
[3],
717 (int)strlen(components
[4]), components
[4],
718 (int)strlen(components
[10]), components
[10],
719 (int)strlen(components
[5]), components
[5]);
721 assert(p
- tmp
< thistmpsize
);
724 * Size is in pixels, for our application, so we
725 * derive it directly from the pixel size field,
728 fontsize
= atoi(components
[6]);
731 * Flags: we need to know whether this is a monospaced
732 * font, which we do by examining the spacing field
735 flags
= FONTFLAG_SERVERSIDE
;
736 if (!strchr("CcMm", components
[10][0]))
737 flags
|= FONTFLAG_NONMONOSPACED
;
740 * Not sure why, but sometimes the X server will
741 * deliver dummy font types in which fontsize comes
742 * out as zero. Filter those out.
745 callback(callback_ctx
, fontnames
[i
], font
, charset
,
746 style
, stylekey
, fontsize
, flags
, &x11font_vtable
);
749 * This isn't an XLFD, so it must be an alias.
750 * Transmit it with mostly null data.
752 * It would be nice to work out if it's monospaced
753 * here, but at the moment I can't see that being
754 * anything but computationally hideous. Ah well.
756 callback(callback_ctx
, fontnames
[i
], fontnames
[i
], NULL
,
757 NULL
, NULL
, 0, FONTFLAG_SERVERALIAS
, &x11font_vtable
);
760 XFreeFontNames(fontnames
);
763 static char *x11font_canonify_fontname(GtkWidget
*widget
, const char *name
,
764 int *size
, int *flags
,
768 * When given an X11 font name to try to make sense of for a
769 * font selector, we must attempt to load it (to see if it
770 * exists), and then canonify it by extracting its FONT
771 * property, which should give its full XLFD even if what we
772 * originally had was a wildcard.
774 * However, we must carefully avoid canonifying font
775 * _aliases_, unless specifically asked to, because the font
776 * selector treats them as worthwhile in their own right.
779 Display
*disp
= GDK_DISPLAY();
780 Atom fontprop
, fontprop2
;
783 xfs
= XLoadQueryFont(disp
, name
);
786 return NULL
; /* didn't make sense to us, sorry */
788 fontprop
= XInternAtom(disp
, "FONT", False
);
790 if (XGetFontProperty(xfs
, fontprop
, &ret
)) {
791 char *newname
= XGetAtomName(disp
, (Atom
)ret
);
793 unsigned long fsize
= 12;
795 fontprop2
= XInternAtom(disp
, "PIXEL_SIZE", False
);
796 if (XGetFontProperty(xfs
, fontprop2
, &fsize
) && fsize
> 0) {
798 XFreeFont(disp
, xfs
);
800 if (name
[0] == '-' || resolve_aliases
)
801 *flags
= FONTFLAG_SERVERSIDE
;
803 *flags
= FONTFLAG_SERVERALIAS
;
805 return dupstr(name
[0] == '-' || resolve_aliases ?
811 XFreeFont(disp
, xfs
);
813 return NULL
; /* something went wrong */
816 static char *x11font_scale_fontname(GtkWidget
*widget
, const char *name
,
819 return NULL
; /* shan't */
822 #if GTK_CHECK_VERSION(2,0,0)
824 /* ----------------------------------------------------------------------
825 * Pango font implementation (for GTK 2 only).
828 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
829 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
832 static int pangofont_has_glyph(unifont
*font
, wchar_t glyph
);
833 static void pangofont_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
834 int x
, int y
, const wchar_t *string
, int len
,
835 int wide
, int bold
, int cellwidth
);
836 static unifont
*pangofont_create(GtkWidget
*widget
, const char *name
,
838 int shadowoffset
, int shadowalways
);
839 static unifont
*pangofont_create_fallback(GtkWidget
*widget
, int height
,
841 int shadowoffset
, int shadowalways
);
842 static void pangofont_destroy(unifont
*font
);
843 static void pangofont_enum_fonts(GtkWidget
*widget
, fontsel_add_entry callback
,
845 static char *pangofont_canonify_fontname(GtkWidget
*widget
, const char *name
,
846 int *size
, int *flags
,
847 int resolve_aliases
);
848 static char *pangofont_scale_fontname(GtkWidget
*widget
, const char *name
,
856 PangoFontDescription
*desc
;
859 * The containing widget.
863 * Data passed in to unifont_create().
865 int bold
, shadowoffset
, shadowalways
;
868 static const struct unifont_vtable pangofont_vtable
= {
870 pangofont_create_fallback
,
874 pangofont_enum_fonts
,
875 pangofont_canonify_fontname
,
876 pangofont_scale_fontname
,
881 * This function is used to rigorously validate a
882 * PangoFontDescription. Later versions of Pango have a nasty
883 * habit of accepting _any_ old string as input to
884 * pango_font_description_from_string and returning a font
885 * description which can actually be used to display text, even if
886 * they have to do it by falling back to their most default font.
887 * This is doubtless helpful in some situations, but not here,
888 * because we need to know if a Pango font string actually _makes
889 * sense_ in order to fall back to treating it as an X font name
890 * if it doesn't. So we check that the font family is actually one
891 * supported by Pango.
893 static int pangofont_check_desc_makes_sense(PangoContext
*ctx
,
894 PangoFontDescription
*desc
)
896 #ifndef PANGO_PRE_1POINT6
899 PangoFontFamily
**families
;
900 int i
, nfamilies
, matched
;
903 * Ask Pango for a list of font families, and iterate through
904 * them to see if one of them matches the family in the
905 * PangoFontDescription.
907 #ifndef PANGO_PRE_1POINT6
908 map
= pango_context_get_font_map(ctx
);
911 pango_font_map_list_families(map
, &families
, &nfamilies
);
913 pango_context_list_families(ctx
, &families
, &nfamilies
);
917 for (i
= 0; i
< nfamilies
; i
++) {
918 if (!g_strcasecmp(pango_font_family_get_name(families
[i
]),
919 pango_font_description_get_family(desc
))) {
929 static unifont
*pangofont_create_internal(GtkWidget
*widget
,
931 PangoFontDescription
*desc
,
933 int shadowoffset
, int shadowalways
)
935 struct pangofont
*pfont
;
936 #ifndef PANGO_PRE_1POINT6
940 PangoFontMetrics
*metrics
;
942 #ifndef PANGO_PRE_1POINT6
943 map
= pango_context_get_font_map(ctx
);
945 pango_font_description_free(desc
);
948 fset
= pango_font_map_load_fontset(map
, ctx
, desc
,
949 pango_context_get_language(ctx
));
951 fset
= pango_context_load_fontset(ctx
, desc
,
952 pango_context_get_language(ctx
));
955 pango_font_description_free(desc
);
958 metrics
= pango_fontset_get_metrics(fset
);
960 pango_font_metrics_get_approximate_digit_width(metrics
) == 0) {
961 pango_font_description_free(desc
);
962 g_object_unref(fset
);
966 pfont
= snew(struct pangofont
);
967 pfont
->u
.vt
= &pangofont_vtable
;
969 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics
));
970 pfont
->u
.ascent
= PANGO_PIXELS(pango_font_metrics_get_ascent(metrics
));
971 pfont
->u
.descent
= PANGO_PIXELS(pango_font_metrics_get_descent(metrics
));
972 pfont
->u
.height
= pfont
->u
.ascent
+ pfont
->u
.descent
;
973 pfont
->u
.want_fallback
= FALSE
;
974 /* The Pango API is hardwired to UTF-8 */
975 pfont
->u
.public_charset
= CS_UTF8
;
978 pfont
->widget
= widget
;
980 pfont
->shadowoffset
= shadowoffset
;
981 pfont
->shadowalways
= shadowalways
;
983 pango_font_metrics_unref(metrics
);
985 return (unifont
*)pfont
;
988 static unifont
*pangofont_create(GtkWidget
*widget
, const char *name
,
990 int shadowoffset
, int shadowalways
)
993 PangoFontDescription
*desc
;
995 desc
= pango_font_description_from_string(name
);
998 ctx
= gtk_widget_get_pango_context(widget
);
1000 pango_font_description_free(desc
);
1003 if (!pangofont_check_desc_makes_sense(ctx
, desc
)) {
1004 pango_font_description_free(desc
);
1007 return pangofont_create_internal(widget
, ctx
, desc
, wide
, bold
,
1008 shadowoffset
, shadowalways
);
1011 static unifont
*pangofont_create_fallback(GtkWidget
*widget
, int height
,
1013 int shadowoffset
, int shadowalways
)
1016 PangoFontDescription
*desc
;
1018 desc
= pango_font_description_from_string("Monospace");
1021 ctx
= gtk_widget_get_pango_context(widget
);
1023 pango_font_description_free(desc
);
1026 pango_font_description_set_absolute_size(desc
, height
* PANGO_SCALE
);
1027 return pangofont_create_internal(widget
, ctx
, desc
, wide
, bold
,
1028 shadowoffset
, shadowalways
);
1031 static void pangofont_destroy(unifont
*font
)
1033 struct pangofont
*pfont
= (struct pangofont
*)font
;
1034 pango_font_description_free(pfont
->desc
);
1035 g_object_unref(pfont
->fset
);
1039 static int pangofont_has_glyph(unifont
*font
, wchar_t glyph
)
1041 /* Pango implements font fallback, so assume it has everything */
1045 static void pangofont_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
1046 int x
, int y
, const wchar_t *string
, int len
,
1047 int wide
, int bold
, int cellwidth
)
1049 struct pangofont
*pfont
= (struct pangofont
*)font
;
1050 PangoLayout
*layout
;
1051 PangoRectangle rect
;
1052 char *utfstring
, *utfptr
;
1054 int shadowbold
= FALSE
;
1059 y
-= pfont
->u
.ascent
;
1061 layout
= pango_layout_new(gtk_widget_get_pango_context(pfont
->widget
));
1062 pango_layout_set_font_description(layout
, pfont
->desc
);
1063 if (bold
> pfont
->bold
) {
1064 if (pfont
->shadowalways
)
1067 PangoFontDescription
*desc2
=
1068 pango_font_description_copy_static(pfont
->desc
);
1069 pango_font_description_set_weight(desc2
, PANGO_WEIGHT_BOLD
);
1070 pango_layout_set_font_description(layout
, desc2
);
1075 * Pango always expects UTF-8, so convert the input wide character
1078 utfstring
= snewn(len
*6+1, char); /* UTF-8 has max 6 bytes/char */
1079 utflen
= wc_to_mb(CS_UTF8
, 0, string
, len
,
1080 utfstring
, len
*6+1, ".", NULL
, NULL
);
1083 while (utflen
> 0) {
1087 * We want to display every character from this string in
1088 * the centre of its own character cell. In the worst case,
1089 * this requires a separate text-drawing call for each
1090 * character; but in the common case where the font is
1091 * properly fixed-width, we can draw many characters in one
1092 * go which is much faster.
1094 * This still isn't really ideal. If you look at what
1095 * happens in the X protocol as a result of all of this, you
1096 * find - naturally enough - that each call to
1097 * gdk_draw_layout() generates a separate set of X RENDER
1098 * operations involving creating a picture, setting a clip
1099 * rectangle, doing some drawing and undoing the whole lot.
1100 * In an ideal world, we should _always_ be able to turn the
1101 * contents of this loop into a single RenderCompositeGlyphs
1102 * operation which internally specifies inter-character
1103 * deltas to get the spacing right, which would give us full
1104 * speed _even_ in the worst case of a non-fixed-width font.
1105 * However, Pango's architecture and documentation are so
1106 * unhelpful that I have no idea how if at all to persuade
1111 * Start by extracting a single UTF-8 character from the
1115 while (clen
< utflen
&&
1116 (unsigned char)utfptr
[clen
] >= 0x80 &&
1117 (unsigned char)utfptr
[clen
] < 0xC0)
1122 * If it's a right-to-left character, we must display it on
1123 * its own, to stop Pango helpfully re-reversing our already
1126 if (!is_rtl(string
[0])) {
1129 * See if that character has the width we expect.
1131 pango_layout_set_text(layout
, utfptr
, clen
);
1132 pango_layout_get_pixel_extents(layout
, NULL
, &rect
);
1134 if (rect
.width
== cellwidth
) {
1136 * Try extracting more characters, for as long as they
1137 * stay well-behaved.
1139 while (clen
< utflen
) {
1141 clen
++; /* skip UTF-8 introducer byte */
1142 while (clen
< utflen
&&
1143 (unsigned char)utfptr
[clen
] >= 0x80 &&
1144 (unsigned char)utfptr
[clen
] < 0xC0)
1147 pango_layout_set_text(layout
, utfptr
, clen
);
1148 pango_layout_get_pixel_extents(layout
, NULL
, &rect
);
1149 if (rect
.width
!= n
* cellwidth
) {
1158 pango_layout_set_text(layout
, utfptr
, clen
);
1159 pango_layout_get_pixel_extents(layout
, NULL
, &rect
);
1160 gdk_draw_layout(target
, gc
, x
+ (n
*cellwidth
- rect
.width
)/2,
1161 y
+ (pfont
->u
.height
- rect
.height
)/2, layout
);
1163 gdk_draw_layout(target
, gc
, x
+ (n
*cellwidth
- rect
.width
)/2 + pfont
->shadowoffset
,
1164 y
+ (pfont
->u
.height
- rect
.height
)/2, layout
);
1174 g_object_unref(layout
);
1178 * Dummy size value to be used when converting a
1179 * PangoFontDescription of a scalable font to a string for
1182 #define PANGO_DUMMY_SIZE 12
1184 static void pangofont_enum_fonts(GtkWidget
*widget
, fontsel_add_entry callback
,
1188 #ifndef PANGO_PRE_1POINT6
1191 PangoFontFamily
**families
;
1194 ctx
= gtk_widget_get_pango_context(widget
);
1199 * Ask Pango for a list of font families, and iterate through
1202 #ifndef PANGO_PRE_1POINT6
1203 map
= pango_context_get_font_map(ctx
);
1206 pango_font_map_list_families(map
, &families
, &nfamilies
);
1208 pango_context_list_families(ctx
, &families
, &nfamilies
);
1210 for (i
= 0; i
< nfamilies
; i
++) {
1211 PangoFontFamily
*family
= families
[i
];
1212 const char *familyname
;
1214 PangoFontFace
**faces
;
1218 * Set up our flags for this font family, and get the name
1221 flags
= FONTFLAG_CLIENTSIDE
;
1222 #ifndef PANGO_PRE_1POINT4
1224 * In very early versions of Pango, we can't tell
1225 * monospaced fonts from non-monospaced.
1227 if (!pango_font_family_is_monospace(family
))
1228 flags
|= FONTFLAG_NONMONOSPACED
;
1230 familyname
= pango_font_family_get_name(family
);
1233 * Go through the available font faces in this family.
1235 pango_font_family_list_faces(family
, &faces
, &nfaces
);
1236 for (j
= 0; j
< nfaces
; j
++) {
1237 PangoFontFace
*face
= faces
[j
];
1238 PangoFontDescription
*desc
;
1239 const char *facename
;
1241 int k
, nsizes
, dummysize
;
1244 * Get the face name string.
1246 facename
= pango_font_face_get_face_name(face
);
1249 * Set up a font description with what we've got so
1250 * far. We'll fill in the size field manually and then
1251 * call pango_font_description_to_string() to give the
1252 * full real name of the specific font.
1254 desc
= pango_font_face_describe(face
);
1257 * See if this font has a list of specific sizes.
1259 #ifndef PANGO_PRE_1POINT4
1260 pango_font_face_list_sizes(face
, &sizes
, &nsizes
);
1263 * In early versions of Pango, that call wasn't
1264 * supported; we just have to assume everything is
1271 * Write a single entry with a dummy size.
1273 dummysize
= PANGO_DUMMY_SIZE
* PANGO_SCALE
;
1279 * If so, go through them one by one.
1281 for (k
= 0; k
< nsizes
; k
++) {
1285 pango_font_description_set_size(desc
, sizes
[k
]);
1287 fullname
= pango_font_description_to_string(desc
);
1290 * Construct the sorting key for font styles.
1296 n
= pango_font_description_get_weight(desc
);
1297 /* Weight: normal, then lighter, then bolder */
1298 if (n
<= PANGO_WEIGHT_NORMAL
)
1299 n
= PANGO_WEIGHT_NORMAL
- n
;
1300 p
+= sprintf(p
, "%4d", n
);
1302 n
= pango_font_description_get_style(desc
);
1303 p
+= sprintf(p
, " %2d", n
);
1305 n
= pango_font_description_get_stretch(desc
);
1306 /* Stretch: closer to normal sorts earlier */
1307 n
= 2 * abs(PANGO_STRETCH_NORMAL
- n
) +
1308 (n
< PANGO_STRETCH_NORMAL
);
1309 p
+= sprintf(p
, " %2d", n
);
1311 n
= pango_font_description_get_variant(desc
);
1312 p
+= sprintf(p
, " %2d", n
);
1317 * Got everything. Hand off to the callback.
1318 * (The charset string is NULL, because only
1319 * server-side X fonts use it.)
1321 callback(callback_ctx
, fullname
, familyname
, NULL
, facename
,
1323 (sizes
== &dummysize ?
0 : PANGO_PIXELS(sizes
[k
])),
1324 flags
, &pangofont_vtable
);
1328 if (sizes
!= &dummysize
)
1331 pango_font_description_free(desc
);
1338 static char *pangofont_canonify_fontname(GtkWidget
*widget
, const char *name
,
1339 int *size
, int *flags
,
1340 int resolve_aliases
)
1343 * When given a Pango font name to try to make sense of for a
1344 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1345 * extract its original size (in pixels) into the `size' field.
1348 #ifndef PANGO_PRE_1POINT6
1351 PangoFontDescription
*desc
;
1353 PangoFontMetrics
*metrics
;
1354 char *newname
, *retname
;
1356 desc
= pango_font_description_from_string(name
);
1359 ctx
= gtk_widget_get_pango_context(widget
);
1361 pango_font_description_free(desc
);
1364 if (!pangofont_check_desc_makes_sense(ctx
, desc
)) {
1365 pango_font_description_free(desc
);
1368 #ifndef PANGO_PRE_1POINT6
1369 map
= pango_context_get_font_map(ctx
);
1371 pango_font_description_free(desc
);
1374 fset
= pango_font_map_load_fontset(map
, ctx
, desc
,
1375 pango_context_get_language(ctx
));
1377 fset
= pango_context_load_fontset(ctx
, desc
,
1378 pango_context_get_language(ctx
));
1381 pango_font_description_free(desc
);
1384 metrics
= pango_fontset_get_metrics(fset
);
1386 pango_font_metrics_get_approximate_digit_width(metrics
) == 0) {
1387 pango_font_description_free(desc
);
1388 g_object_unref(fset
);
1392 *size
= PANGO_PIXELS(pango_font_description_get_size(desc
));
1393 *flags
= FONTFLAG_CLIENTSIDE
;
1394 pango_font_description_set_size(desc
, PANGO_DUMMY_SIZE
* PANGO_SCALE
);
1395 newname
= pango_font_description_to_string(desc
);
1396 retname
= dupstr(newname
);
1399 pango_font_metrics_unref(metrics
);
1400 pango_font_description_free(desc
);
1401 g_object_unref(fset
);
1406 static char *pangofont_scale_fontname(GtkWidget
*widget
, const char *name
,
1409 PangoFontDescription
*desc
;
1410 char *newname
, *retname
;
1412 desc
= pango_font_description_from_string(name
);
1415 pango_font_description_set_size(desc
, size
* PANGO_SCALE
);
1416 newname
= pango_font_description_to_string(desc
);
1417 retname
= dupstr(newname
);
1419 pango_font_description_free(desc
);
1424 #endif /* GTK_CHECK_VERSION(2,0,0) */
1426 /* ----------------------------------------------------------------------
1427 * Outermost functions which do the vtable dispatch.
1431 * Complete list of font-type subclasses. Listed in preference
1432 * order for unifont_create(). (That is, in the extremely unlikely
1433 * event that the same font name is valid as both a Pango and an
1434 * X11 font, it will be interpreted as the former in the absence
1435 * of an explicit type-disambiguating prefix.)
1437 * The 'multifont' subclass is omitted here, as discussed above.
1439 static const struct unifont_vtable
*unifont_types
[] = {
1440 #if GTK_CHECK_VERSION(2,0,0)
1447 * Function which takes a font name and processes the optional
1448 * scheme prefix. Returns the tail of the font name suitable for
1449 * passing to individual font scheme functions, and also provides
1450 * a subrange of the unifont_types[] array above.
1452 * The return values `start' and `end' denote a half-open interval
1453 * in unifont_types[]; that is, the correct way to iterate over
1456 * for (i = start; i < end; i++) {...}
1458 static const char *unifont_do_prefix(const char *name
, int *start
, int *end
)
1460 int colonpos
= strcspn(name
, ":");
1463 if (name
[colonpos
]) {
1465 * There's a colon prefix on the font name. Use it to work
1466 * out which subclass to use.
1468 for (i
= 0; i
< lenof(unifont_types
); i
++) {
1469 if (strlen(unifont_types
[i
]->prefix
) == colonpos
&&
1470 !strncmp(unifont_types
[i
]->prefix
, name
, colonpos
)) {
1473 return name
+ colonpos
+ 1;
1477 * None matched, so return an empty scheme list to prevent
1478 * any scheme from being called at all.
1481 return name
+ colonpos
+ 1;
1484 * No colon prefix, so just use all the subclasses.
1487 *end
= lenof(unifont_types
);
1492 unifont
*unifont_create(GtkWidget
*widget
, const char *name
, int wide
,
1493 int bold
, int shadowoffset
, int shadowalways
)
1497 name
= unifont_do_prefix(name
, &start
, &end
);
1499 for (i
= start
; i
< end
; i
++) {
1500 unifont
*ret
= unifont_types
[i
]->create(widget
, name
, wide
, bold
,
1501 shadowoffset
, shadowalways
);
1505 return NULL
; /* font not found in any scheme */
1508 void unifont_destroy(unifont
*font
)
1510 font
->vt
->destroy(font
);
1513 void unifont_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
1514 int x
, int y
, const wchar_t *string
, int len
,
1515 int wide
, int bold
, int cellwidth
)
1517 font
->vt
->draw_text(target
, gc
, font
, x
, y
, string
, len
,
1518 wide
, bold
, cellwidth
);
1521 /* ----------------------------------------------------------------------
1522 * Multiple-font wrapper. This is a type of unifont which encapsulates
1523 * up to two other unifonts, permitting missing glyphs in the main
1524 * font to be filled in by a fallback font.
1526 * This is a type of unifont just like the previous two, but it has a
1527 * separate constructor which is manually called by the client, so it
1528 * doesn't appear in the list of available font types enumerated by
1529 * unifont_create. This means it's not used by unifontsel either, so
1530 * it doesn't need to support any methods except draw_text and
1534 static void multifont_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
1535 int x
, int y
, const wchar_t *string
, int len
,
1536 int wide
, int bold
, int cellwidth
);
1537 static void multifont_destroy(unifont
*font
);
1545 static const struct unifont_vtable multifont_vtable
= {
1546 NULL
, /* creation is done specially */
1550 multifont_draw_text
,
1557 unifont
*multifont_create(GtkWidget
*widget
, const char *name
,
1559 int shadowoffset
, int shadowalways
)
1562 unifont
*font
, *fallback
;
1563 struct multifont
*mfont
;
1565 font
= unifont_create(widget
, name
, wide
, bold
,
1566 shadowoffset
, shadowalways
);
1570 if (font
->want_fallback
) {
1571 for (i
= 0; i
< lenof(unifont_types
); i
++) {
1572 if (unifont_types
[i
]->create_fallback
) {
1573 fallback
= unifont_types
[i
]->create_fallback
1574 (widget
, font
->height
, wide
, bold
,
1575 shadowoffset
, shadowalways
);
1583 * Construct our multifont. Public members are all copied from the
1584 * primary font we're wrapping.
1586 mfont
= snew(struct multifont
);
1587 mfont
->u
.vt
= &multifont_vtable
;
1588 mfont
->u
.width
= font
->width
;
1589 mfont
->u
.ascent
= font
->ascent
;
1590 mfont
->u
.descent
= font
->descent
;
1591 mfont
->u
.height
= font
->height
;
1592 mfont
->u
.public_charset
= font
->public_charset
;
1593 mfont
->u
.want_fallback
= FALSE
; /* shouldn't be needed, but just in case */
1595 mfont
->fallback
= fallback
;
1597 return (unifont
*)mfont
;
1600 static void multifont_destroy(unifont
*font
)
1602 struct multifont
*mfont
= (struct multifont
*)font
;
1603 unifont_destroy(mfont
->main
);
1604 if (mfont
->fallback
)
1605 unifont_destroy(mfont
->fallback
);
1609 static void multifont_draw_text(GdkDrawable
*target
, GdkGC
*gc
, unifont
*font
,
1610 int x
, int y
, const wchar_t *string
, int len
,
1611 int wide
, int bold
, int cellwidth
)
1613 struct multifont
*mfont
= (struct multifont
*)font
;
1618 * Find a maximal sequence of characters which are, or are
1619 * not, supported by our main font.
1621 ok
= mfont
->main
->vt
->has_glyph(mfont
->main
, string
[0]);
1624 !mfont
->main
->vt
->has_glyph(mfont
->main
, string
[i
]) == !ok
;
1630 unifont_draw_text(target
, gc
, ok ? mfont
->main
: mfont
->fallback
,
1631 x
, y
, string
, i
, wide
, bold
, cellwidth
);
1638 #if GTK_CHECK_VERSION(2,0,0)
1640 /* ----------------------------------------------------------------------
1641 * Implementation of a unified font selector. Used on GTK 2 only;
1642 * for GTK 1 we still use the standard font selector.
1645 typedef struct fontinfo fontinfo
;
1647 typedef struct unifontsel_internal
{
1648 /* This must be the structure's first element, for cross-casting */
1650 GtkListStore
*family_model
, *style_model
, *size_model
;
1651 GtkWidget
*family_list
, *style_list
, *size_entry
, *size_list
;
1652 GtkWidget
*filter_buttons
[4];
1653 GtkWidget
*preview_area
;
1654 GdkPixmap
*preview_pixmap
;
1655 int preview_width
, preview_height
;
1656 GdkColor preview_fg
, preview_bg
;
1658 tree234
*fonts_by_realname
, *fonts_by_selorder
;
1660 int selsize
, intendedsize
;
1661 int inhibit_response
; /* inhibit callbacks when we change GUI controls */
1662 } unifontsel_internal
;
1665 * The structure held in the tree234s. All the string members are
1666 * part of the same allocated area, so don't need freeing
1671 char *family
, *charset
, *style
, *stylekey
;
1674 * Fallback sorting key, to permit multiple identical entries
1675 * to exist in the selorder tree.
1679 * Indices mapping fontinfo structures to indices in the list
1680 * boxes. sizeindex is irrelevant if the font is scalable
1683 int familyindex
, styleindex
, sizeindex
;
1685 * The class of font.
1687 const struct unifont_vtable
*fontclass
;
1690 struct fontinfo_realname_find
{
1691 const char *realname
;
1695 static int strnullcasecmp(const char *a
, const char *b
)
1700 * If exactly one of the inputs is NULL, it compares before
1703 if ((i
= (!b
) - (!a
)) != 0)
1707 * NULL compares equal.
1713 * Otherwise, ordinary strcasecmp.
1715 return g_strcasecmp(a
, b
);
1718 static int fontinfo_realname_compare(void *av
, void *bv
)
1720 fontinfo
*a
= (fontinfo
*)av
;
1721 fontinfo
*b
= (fontinfo
*)bv
;
1724 if ((i
= strnullcasecmp(a
->realname
, b
->realname
)) != 0)
1726 if ((a
->flags
& FONTFLAG_SORT_MASK
) != (b
->flags
& FONTFLAG_SORT_MASK
))
1727 return ((a
->flags
& FONTFLAG_SORT_MASK
) <
1728 (b
->flags
& FONTFLAG_SORT_MASK
) ?
-1 : +1);
1732 static int fontinfo_realname_find(void *av
, void *bv
)
1734 struct fontinfo_realname_find
*a
= (struct fontinfo_realname_find
*)av
;
1735 fontinfo
*b
= (fontinfo
*)bv
;
1738 if ((i
= strnullcasecmp(a
->realname
, b
->realname
)) != 0)
1740 if ((a
->flags
& FONTFLAG_SORT_MASK
) != (b
->flags
& FONTFLAG_SORT_MASK
))
1741 return ((a
->flags
& FONTFLAG_SORT_MASK
) <
1742 (b
->flags
& FONTFLAG_SORT_MASK
) ?
-1 : +1);
1746 static int fontinfo_selorder_compare(void *av
, void *bv
)
1748 fontinfo
*a
= (fontinfo
*)av
;
1749 fontinfo
*b
= (fontinfo
*)bv
;
1751 if ((i
= strnullcasecmp(a
->family
, b
->family
)) != 0)
1754 * Font class comes immediately after family, so that fonts
1755 * from different classes with the same family
1757 if ((a
->flags
& FONTFLAG_SORT_MASK
) != (b
->flags
& FONTFLAG_SORT_MASK
))
1758 return ((a
->flags
& FONTFLAG_SORT_MASK
) <
1759 (b
->flags
& FONTFLAG_SORT_MASK
) ?
-1 : +1);
1760 if ((i
= strnullcasecmp(a
->charset
, b
->charset
)) != 0)
1762 if ((i
= strnullcasecmp(a
->stylekey
, b
->stylekey
)) != 0)
1764 if ((i
= strnullcasecmp(a
->style
, b
->style
)) != 0)
1766 if (a
->size
!= b
->size
)
1767 return (a
->size
< b
->size ?
-1 : +1);
1768 if (a
->index
!= b
->index
)
1769 return (a
->index
< b
->index ?
-1 : +1);
1773 static void unifontsel_deselect(unifontsel_internal
*fs
)
1775 fs
->selected
= NULL
;
1776 gtk_list_store_clear(fs
->style_model
);
1777 gtk_list_store_clear(fs
->size_model
);
1778 gtk_widget_set_sensitive(fs
->u
.ok_button
, FALSE
);
1779 gtk_widget_set_sensitive(fs
->size_entry
, FALSE
);
1782 static void unifontsel_setup_familylist(unifontsel_internal
*fs
)
1785 int i
, listindex
, minpos
= -1, maxpos
= -1;
1786 char *currfamily
= NULL
;
1790 gtk_list_store_clear(fs
->family_model
);
1794 * Search through the font tree for anything matching our
1795 * current filter criteria. When we find one, add its font
1796 * name to the list box.
1798 for (i
= 0 ;; i
++) {
1799 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, i
);
1801 * info may be NULL if we've just run off the end of the
1802 * tree. We must still do a processing pass in that
1803 * situation, in case we had an unfinished font record in
1806 if (info
&& (info
->flags
&~ fs
->filter_flags
)) {
1807 info
->familyindex
= -1;
1808 continue; /* we're filtering out this font */
1810 if (!info
|| strnullcasecmp(currfamily
, info
->family
) ||
1811 currflags
!= (info
->flags
& FONTFLAG_SORT_MASK
)) {
1813 * We've either finished a family, or started a new
1817 gtk_list_store_append(fs
->family_model
, &iter
);
1818 gtk_list_store_set(fs
->family_model
, &iter
,
1819 0, currfamily
, 1, minpos
, 2, maxpos
+1, -1);
1824 currfamily
= info
->family
;
1825 currflags
= info
->flags
& FONTFLAG_SORT_MASK
;
1829 break; /* now we're done */
1830 info
->familyindex
= listindex
;
1835 * If we've just filtered out the previously selected font,
1836 * deselect it thoroughly.
1838 if (fs
->selected
&& fs
->selected
->familyindex
< 0)
1839 unifontsel_deselect(fs
);
1842 static void unifontsel_setup_stylelist(unifontsel_internal
*fs
,
1846 int i
, listindex
, minpos
= -1, maxpos
= -1, started
= FALSE
;
1847 char *currcs
= NULL
, *currstyle
= NULL
;
1850 gtk_list_store_clear(fs
->style_model
);
1855 * Search through the font tree for anything matching our
1856 * current filter criteria. When we find one, add its charset
1857 * and/or style name to the list box.
1859 for (i
= start
; i
<= end
; i
++) {
1863 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, i
);
1865 * info may be NULL if we've just run off the end of the
1866 * relevant data. We must still do a processing pass in
1867 * that situation, in case we had an unfinished font
1868 * record in progress.
1870 if (info
&& (info
->flags
&~ fs
->filter_flags
)) {
1871 info
->styleindex
= -1;
1872 continue; /* we're filtering out this font */
1874 if (!info
|| !started
|| strnullcasecmp(currcs
, info
->charset
) ||
1875 strnullcasecmp(currstyle
, info
->style
)) {
1877 * We've either finished a style/charset, or started a
1882 gtk_list_store_append(fs
->style_model
, &iter
);
1883 gtk_list_store_set(fs
->style_model
, &iter
,
1884 0, currstyle
, 1, minpos
, 2, maxpos
+1,
1890 if (info
->charset
&& strnullcasecmp(currcs
, info
->charset
)) {
1891 gtk_list_store_append(fs
->style_model
, &iter
);
1892 gtk_list_store_set(fs
->style_model
, &iter
,
1893 0, info
->charset
, 1, -1, 2, -1,
1897 currcs
= info
->charset
;
1898 currstyle
= info
->style
;
1902 break; /* now we're done */
1903 info
->styleindex
= listindex
;
1908 static const int unifontsel_default_sizes
[] = { 10, 12, 14, 16, 20, 24, 32 };
1910 static void unifontsel_setup_sizelist(unifontsel_internal
*fs
,
1918 gtk_list_store_clear(fs
->size_model
);
1922 * Search through the font tree for anything matching our
1923 * current filter criteria. When we find one, add its font
1924 * name to the list box.
1926 for (i
= start
; i
< end
; i
++) {
1927 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, i
);
1928 if (info
->flags
&~ fs
->filter_flags
) {
1929 info
->sizeindex
= -1;
1930 continue; /* we're filtering out this font */
1933 sprintf(sizetext
, "%d", info
->size
);
1934 info
->sizeindex
= listindex
;
1935 gtk_list_store_append(fs
->size_model
, &iter
);
1936 gtk_list_store_set(fs
->size_model
, &iter
,
1937 0, sizetext
, 1, i
, 2, info
->size
, -1);
1945 for (j
= 0; j
< lenof(unifontsel_default_sizes
); j
++) {
1946 sprintf(sizetext
, "%d", unifontsel_default_sizes
[j
]);
1947 gtk_list_store_append(fs
->size_model
, &iter
);
1948 gtk_list_store_set(fs
->size_model
, &iter
, 0, sizetext
, 1, i
,
1949 2, unifontsel_default_sizes
[j
], -1);
1956 static void unifontsel_set_filter_buttons(unifontsel_internal
*fs
)
1960 for (i
= 0; i
< lenof(fs
->filter_buttons
); i
++) {
1961 int flagbit
= GPOINTER_TO_INT(gtk_object_get_data
1962 (GTK_OBJECT(fs
->filter_buttons
[i
]),
1964 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs
->filter_buttons
[i
]),
1965 !!(fs
->filter_flags
& flagbit
));
1969 static void unifontsel_draw_preview_text(unifontsel_internal
*fs
)
1972 char *sizename
= NULL
;
1973 fontinfo
*info
= fs
->selected
;
1976 sizename
= info
->fontclass
->scale_fontname
1977 (GTK_WIDGET(fs
->u
.window
), info
->realname
, fs
->selsize
);
1978 font
= info
->fontclass
->create(GTK_WIDGET(fs
->u
.window
),
1979 sizename ? sizename
: info
->realname
,
1980 FALSE
, FALSE
, 0, 0);
1984 if (fs
->preview_pixmap
) {
1985 GdkGC
*gc
= gdk_gc_new(fs
->preview_pixmap
);
1986 gdk_gc_set_foreground(gc
, &fs
->preview_bg
);
1987 gdk_draw_rectangle(fs
->preview_pixmap
, gc
, 1, 0, 0,
1988 fs
->preview_width
, fs
->preview_height
);
1989 gdk_gc_set_foreground(gc
, &fs
->preview_fg
);
1992 * The pangram used here is rather carefully
1993 * constructed: it contains a sequence of very narrow
1994 * letters (`jil') and a pair of adjacent very wide
1997 * If the user selects a proportional font, it will be
1998 * coerced into fixed-width character cells when used
1999 * in the actual terminal window. We therefore display
2000 * it the same way in the preview pane, so as to show
2001 * it the way it will actually be displayed - and we
2002 * deliberately pick a pangram which will show the
2003 * resulting miskerning at its worst.
2005 * We aren't trying to sell people these fonts; we're
2006 * trying to let them make an informed choice. Better
2007 * that they find out the problems with using
2008 * proportional fonts in terminal windows here than
2009 * that they go to the effort of selecting their font
2010 * and _then_ realise it was a mistake.
2012 info
->fontclass
->draw_text(fs
->preview_pixmap
, gc
, font
,
2014 L
"bankrupt jilted showmen quiz convex fogey",
2015 41, FALSE
, FALSE
, font
->width
);
2016 info
->fontclass
->draw_text(fs
->preview_pixmap
, gc
, font
,
2017 0, font
->ascent
+ font
->height
,
2018 L
"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
2019 41, FALSE
, FALSE
, font
->width
);
2021 * The ordering of punctuation here is also selected
2022 * with some specific aims in mind. I put ` and '
2023 * together because some software (and people) still
2024 * use them as matched quotes no matter what Unicode
2025 * might say on the matter, so people can quickly
2026 * check whether they look silly in a candidate font.
2027 * The sequence #_@ is there to let people judge the
2028 * suitability of the underscore as an effectively
2029 * alphabetic character (since that's how it's often
2030 * used in practice, at least by programmers).
2032 info
->fontclass
->draw_text(fs
->preview_pixmap
, gc
, font
,
2033 0, font
->ascent
+ font
->height
* 2,
2034 L
"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
2035 42, FALSE
, FALSE
, font
->width
);
2038 gdk_window_invalidate_rect(fs
->preview_area
->window
, NULL
, FALSE
);
2041 info
->fontclass
->destroy(font
);
2046 static void unifontsel_select_font(unifontsel_internal
*fs
,
2047 fontinfo
*info
, int size
, int leftlist
,
2048 int size_is_explicit
)
2052 GtkTreePath
*treepath
;
2055 fs
->inhibit_response
= TRUE
;
2057 fs
->selected
= info
;
2059 if (size_is_explicit
)
2060 fs
->intendedsize
= size
;
2062 gtk_widget_set_sensitive(fs
->u
.ok_button
, TRUE
);
2065 * Find the index of this fontinfo in the selorder list.
2068 findpos234(fs
->fonts_by_selorder
, info
, NULL
, &index
);
2072 * Adjust the font selector flags and redo the font family
2073 * list box, if necessary.
2075 if (leftlist
<= 0 &&
2076 (fs
->filter_flags
| info
->flags
) != fs
->filter_flags
) {
2077 fs
->filter_flags
|= info
->flags
;
2078 unifontsel_set_filter_buttons(fs
);
2079 unifontsel_setup_familylist(fs
);
2083 * Find the appropriate family name and select it in the list.
2085 assert(info
->familyindex
>= 0);
2086 treepath
= gtk_tree_path_new_from_indices(info
->familyindex
, -1);
2087 gtk_tree_selection_select_path
2088 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs
->family_list
)),
2090 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs
->family_list
),
2091 treepath
, NULL
, FALSE
, 0.0, 0.0);
2092 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs
->family_model
), &iter
, treepath
);
2093 gtk_tree_path_free(treepath
);
2096 * Now set up the font style list.
2098 gtk_tree_model_get(GTK_TREE_MODEL(fs
->family_model
), &iter
,
2099 1, &minval
, 2, &maxval
, -1);
2101 unifontsel_setup_stylelist(fs
, minval
, maxval
);
2104 * Find the appropriate style name and select it in the list.
2107 assert(info
->styleindex
>= 0);
2108 treepath
= gtk_tree_path_new_from_indices(info
->styleindex
, -1);
2109 gtk_tree_selection_select_path
2110 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs
->style_list
)),
2112 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs
->style_list
),
2113 treepath
, NULL
, FALSE
, 0.0, 0.0);
2114 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs
->style_model
),
2116 gtk_tree_path_free(treepath
);
2119 * And set up the size list.
2121 gtk_tree_model_get(GTK_TREE_MODEL(fs
->style_model
), &iter
,
2122 1, &minval
, 2, &maxval
, -1);
2124 unifontsel_setup_sizelist(fs
, minval
, maxval
);
2127 * Find the appropriate size, and select it in the list.
2130 assert(info
->sizeindex
>= 0);
2131 treepath
= gtk_tree_path_new_from_indices(info
->sizeindex
, -1);
2132 gtk_tree_selection_select_path
2133 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs
->size_list
)),
2135 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs
->size_list
),
2136 treepath
, NULL
, FALSE
, 0.0, 0.0);
2137 gtk_tree_path_free(treepath
);
2141 for (j
= 0; j
< lenof(unifontsel_default_sizes
); j
++)
2142 if (unifontsel_default_sizes
[j
] == size
) {
2143 treepath
= gtk_tree_path_new_from_indices(j
, -1);
2144 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs
->size_list
),
2145 treepath
, NULL
, FALSE
);
2146 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs
->size_list
),
2147 treepath
, NULL
, FALSE
, 0.0,
2149 gtk_tree_path_free(treepath
);
2154 * And set up the font size text entry box.
2158 sprintf(sizetext
, "%d", size
);
2159 gtk_entry_set_text(GTK_ENTRY(fs
->size_entry
), sizetext
);
2163 unifontsel_setup_sizelist(fs
, 0, 0);
2164 gtk_entry_set_text(GTK_ENTRY(fs
->size_entry
), "");
2168 * Grey out the font size edit box if we're not using a
2171 gtk_entry_set_editable(GTK_ENTRY(fs
->size_entry
), fs
->selected
->size
== 0);
2172 gtk_widget_set_sensitive(fs
->size_entry
, fs
->selected
->size
== 0);
2174 unifontsel_draw_preview_text(fs
);
2176 fs
->inhibit_response
= FALSE
;
2179 static void unifontsel_button_toggled(GtkToggleButton
*tb
, gpointer data
)
2181 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2182 int newstate
= gtk_toggle_button_get_active(tb
);
2184 int flagbit
= GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb
),
2188 newflags
= fs
->filter_flags
| flagbit
;
2190 newflags
= fs
->filter_flags
& ~flagbit
;
2192 if (fs
->filter_flags
!= newflags
) {
2193 fs
->filter_flags
= newflags
;
2194 unifontsel_setup_familylist(fs
);
2198 static void unifontsel_add_entry(void *ctx
, const char *realfontname
,
2199 const char *family
, const char *charset
,
2200 const char *style
, const char *stylekey
,
2201 int size
, int flags
,
2202 const struct unifont_vtable
*fontclass
)
2204 unifontsel_internal
*fs
= (unifontsel_internal
*)ctx
;
2209 totalsize
= sizeof(fontinfo
) + strlen(realfontname
) +
2210 (family ?
strlen(family
) : 0) + (charset ?
strlen(charset
) : 0) +
2211 (style ?
strlen(style
) : 0) + (stylekey ?
strlen(stylekey
) : 0) + 10;
2212 info
= (fontinfo
*)smalloc(totalsize
);
2213 info
->fontclass
= fontclass
;
2214 p
= (char *)info
+ sizeof(fontinfo
);
2216 strcpy(p
, realfontname
);
2223 info
->family
= NULL
;
2229 info
->charset
= NULL
;
2238 strcpy(p
, stylekey
);
2241 info
->stylekey
= NULL
;
2242 assert(p
- (char *)info
<= totalsize
);
2244 info
->flags
= flags
;
2245 info
->index
= count234(fs
->fonts_by_selorder
);
2248 * It's just conceivable that a misbehaving font enumerator
2249 * might tell us about the same font real name more than once,
2250 * in which case we should silently drop the new one.
2252 if (add234(fs
->fonts_by_realname
, info
) != info
) {
2257 * However, we should never get a duplicate key in the
2258 * selorder tree, because the index field carefully
2259 * disambiguates otherwise identical records.
2261 add234(fs
->fonts_by_selorder
, info
);
2264 static fontinfo
*update_for_intended_size(unifontsel_internal
*fs
,
2267 fontinfo info2
, *below
, *above
;
2271 * Copy the info structure. This doesn't copy its dynamic
2272 * string fields, but that's unimportant because all we're
2273 * going to do is to adjust the size field and use it in one
2277 info2
.size
= fs
->intendedsize
;
2280 * Search in the tree to find the fontinfo structure which
2281 * best approximates the size the user last requested.
2283 below
= findrelpos234(fs
->fonts_by_selorder
, &info2
, NULL
,
2285 above
= index234(fs
->fonts_by_selorder
, pos
+1);
2288 * See if we've found it exactly, which is an easy special
2289 * case. If we have, it'll be in `below' and not `above',
2290 * because we did a REL234_LE rather than REL234_LT search.
2292 if (!fontinfo_selorder_compare(&info2
, below
))
2296 * Now we've either found two suitable fonts, one smaller and
2297 * one larger, or we're at one or other extreme end of the
2298 * scale. Find out which, by NULLing out either of below and
2299 * above if it differs from this one in any respect but size
2300 * (and the disambiguating index field). Bear in mind, also,
2301 * that either one might _already_ be NULL if we're at the
2302 * extreme ends of the font list.
2305 info2
.size
= below
->size
;
2306 info2
.index
= below
->index
;
2307 if (fontinfo_selorder_compare(&info2
, below
))
2311 info2
.size
= above
->size
;
2312 info2
.index
= above
->index
;
2313 if (fontinfo_selorder_compare(&info2
, above
))
2318 * Now return whichever of above and below is non-NULL, if
2319 * that's unambiguous.
2327 * And now we really do have to make a choice about whether to
2328 * round up or down. We'll do it by rounding to nearest,
2329 * breaking ties by rounding up.
2331 if (above
->size
- fs
->intendedsize
<= fs
->intendedsize
- below
->size
)
2337 static void family_changed(GtkTreeSelection
*treeselection
, gpointer data
)
2339 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2340 GtkTreeModel
*treemodel
;
2341 GtkTreeIter treeiter
;
2345 if (fs
->inhibit_response
) /* we made this change ourselves */
2348 if (!gtk_tree_selection_get_selected(treeselection
, &treemodel
, &treeiter
))
2351 gtk_tree_model_get(treemodel
, &treeiter
, 1, &minval
, -1);
2352 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, minval
);
2353 info
= update_for_intended_size(fs
, info
);
2355 return; /* _shouldn't_ happen unless font list is completely funted */
2357 fs
->selsize
= fs
->intendedsize
; /* font is scalable */
2358 unifontsel_select_font(fs
, info
, info
->size ? info
->size
: fs
->selsize
,
2362 static void style_changed(GtkTreeSelection
*treeselection
, gpointer data
)
2364 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2365 GtkTreeModel
*treemodel
;
2366 GtkTreeIter treeiter
;
2370 if (fs
->inhibit_response
) /* we made this change ourselves */
2373 if (!gtk_tree_selection_get_selected(treeselection
, &treemodel
, &treeiter
))
2376 gtk_tree_model_get(treemodel
, &treeiter
, 1, &minval
, -1);
2378 return; /* somehow a charset heading got clicked */
2379 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, minval
);
2380 info
= update_for_intended_size(fs
, info
);
2382 return; /* _shouldn't_ happen unless font list is completely funted */
2384 fs
->selsize
= fs
->intendedsize
; /* font is scalable */
2385 unifontsel_select_font(fs
, info
, info
->size ? info
->size
: fs
->selsize
,
2389 static void size_changed(GtkTreeSelection
*treeselection
, gpointer data
)
2391 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2392 GtkTreeModel
*treemodel
;
2393 GtkTreeIter treeiter
;
2397 if (fs
->inhibit_response
) /* we made this change ourselves */
2400 if (!gtk_tree_selection_get_selected(treeselection
, &treemodel
, &treeiter
))
2403 gtk_tree_model_get(treemodel
, &treeiter
, 1, &minval
, 2, &size
, -1);
2404 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, minval
);
2405 unifontsel_select_font(fs
, info
, info
->size ? info
->size
: size
, 3, TRUE
);
2408 static void size_entry_changed(GtkEditable
*ed
, gpointer data
)
2410 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2414 if (fs
->inhibit_response
) /* we made this change ourselves */
2417 text
= gtk_entry_get_text(GTK_ENTRY(ed
));
2421 assert(fs
->selected
->size
== 0);
2422 unifontsel_select_font(fs
, fs
->selected
, size
, 3, TRUE
);
2426 static void alias_resolve(GtkTreeView
*treeview
, GtkTreePath
*path
,
2427 GtkTreeViewColumn
*column
, gpointer data
)
2429 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2431 int minval
, newsize
;
2432 fontinfo
*info
, *newinfo
;
2435 if (fs
->inhibit_response
) /* we made this change ourselves */
2438 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs
->family_model
), &iter
, path
);
2439 gtk_tree_model_get(GTK_TREE_MODEL(fs
->family_model
), &iter
, 1,&minval
, -1);
2440 info
= (fontinfo
*)index234(fs
->fonts_by_selorder
, minval
);
2443 struct fontinfo_realname_find f
;
2445 newname
= info
->fontclass
->canonify_fontname
2446 (GTK_WIDGET(fs
->u
.window
), info
->realname
, &newsize
, &flags
, TRUE
);
2448 f
.realname
= newname
;
2450 newinfo
= find234(fs
->fonts_by_realname
, &f
, fontinfo_realname_find
);
2454 return; /* font name not in our index */
2455 if (newinfo
== info
)
2456 return; /* didn't change under canonification => not an alias */
2457 unifontsel_select_font(fs
, newinfo
,
2458 newinfo
->size ? newinfo
->size
: newsize
,
2463 static gint
unifontsel_expose_area(GtkWidget
*widget
, GdkEventExpose
*event
,
2466 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2468 if (fs
->preview_pixmap
) {
2469 gdk_draw_pixmap(widget
->window
,
2470 widget
->style
->fg_gc
[GTK_WIDGET_STATE(widget
)],
2472 event
->area
.x
, event
->area
.y
,
2473 event
->area
.x
, event
->area
.y
,
2474 event
->area
.width
, event
->area
.height
);
2479 static gint
unifontsel_configure_area(GtkWidget
*widget
,
2480 GdkEventConfigure
*event
, gpointer data
)
2482 unifontsel_internal
*fs
= (unifontsel_internal
*)data
;
2483 int ox
, oy
, nx
, ny
, x
, y
;
2486 * Enlarge the pixmap, but never shrink it.
2488 ox
= fs
->preview_width
;
2489 oy
= fs
->preview_height
;
2492 if (x
> ox
|| y
> oy
) {
2493 if (fs
->preview_pixmap
)
2494 gdk_pixmap_unref(fs
->preview_pixmap
);
2496 nx
= (x
> ox ? x
: ox
);
2497 ny
= (y
> oy ? y
: oy
);
2498 fs
->preview_pixmap
= gdk_pixmap_new(widget
->window
, nx
, ny
, -1);
2499 fs
->preview_width
= nx
;
2500 fs
->preview_height
= ny
;
2502 unifontsel_draw_preview_text(fs
);
2505 gdk_window_invalidate_rect(widget
->window
, NULL
, FALSE
);
2510 unifontsel
*unifontsel_new(const char *wintitle
)
2512 unifontsel_internal
*fs
= snew(unifontsel_internal
);
2513 GtkWidget
*table
, *label
, *w
, *ww
, *scroll
;
2514 GtkListStore
*model
;
2515 GtkTreeViewColumn
*column
;
2516 int lists_height
, preview_height
, font_width
, style_width
, size_width
;
2519 fs
->inhibit_response
= FALSE
;
2520 fs
->selected
= NULL
;
2524 * Invent some magic size constants.
2527 label
= gtk_label_new("Quite Long Font Name (Foundry)");
2528 gtk_widget_size_request(label
, &req
);
2529 font_width
= req
.width
;
2530 lists_height
= 14 * req
.height
;
2531 preview_height
= 5 * req
.height
;
2532 gtk_label_set_text(GTK_LABEL(label
), "Italic Extra Condensed");
2533 gtk_widget_size_request(label
, &req
);
2534 style_width
= req
.width
;
2535 gtk_label_set_text(GTK_LABEL(label
), "48000");
2536 gtk_widget_size_request(label
, &req
);
2537 size_width
= req
.width
;
2538 #if GTK_CHECK_VERSION(2,10,0)
2539 g_object_ref_sink(label
);
2540 g_object_unref(label
);
2542 gtk_object_sink(GTK_OBJECT(label
));
2547 * Create the dialog box and initialise the user-visible
2548 * fields in the returned structure.
2550 fs
->u
.user_data
= NULL
;
2551 fs
->u
.window
= GTK_WINDOW(gtk_dialog_new());
2552 gtk_window_set_title(fs
->u
.window
, wintitle
);
2553 fs
->u
.cancel_button
= gtk_dialog_add_button
2554 (GTK_DIALOG(fs
->u
.window
), GTK_STOCK_CANCEL
, GTK_RESPONSE_CANCEL
);
2555 fs
->u
.ok_button
= gtk_dialog_add_button
2556 (GTK_DIALOG(fs
->u
.window
), GTK_STOCK_OK
, GTK_RESPONSE_OK
);
2557 gtk_widget_grab_default(fs
->u
.ok_button
);
2560 * Now set up the internal fields, including in particular all
2561 * the controls that actually allow the user to select fonts.
2563 table
= gtk_table_new(8, 3, FALSE
);
2564 gtk_widget_show(table
);
2565 gtk_table_set_col_spacings(GTK_TABLE(table
), 8);
2566 #if GTK_CHECK_VERSION(2,4,0)
2567 /* GtkAlignment seems to be the simplest way to put padding round things */
2568 w
= gtk_alignment_new(0, 0, 1, 1);
2569 gtk_alignment_set_padding(GTK_ALIGNMENT(w
), 8, 8, 8, 8);
2570 gtk_container_add(GTK_CONTAINER(w
), table
);
2575 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs
->u
.window
)->vbox
),
2578 label
= gtk_label_new_with_mnemonic("_Font:");
2579 gtk_widget_show(label
);
2580 gtk_misc_set_alignment(GTK_MISC(label
), 0.0, 0.0);
2581 gtk_table_attach(GTK_TABLE(table
), label
, 0, 1, 0, 1, GTK_FILL
, 0, 0, 0);
2584 * The Font list box displays only a string, but additionally
2585 * stores two integers which give the limits within the
2586 * tree234 of the font entries covered by this list entry.
2588 model
= gtk_list_store_new(3, G_TYPE_STRING
, G_TYPE_INT
, G_TYPE_INT
);
2589 w
= gtk_tree_view_new_with_model(GTK_TREE_MODEL(model
));
2590 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w
), FALSE
);
2591 gtk_label_set_mnemonic_widget(GTK_LABEL(label
), w
);
2593 column
= gtk_tree_view_column_new_with_attributes
2594 ("Font", gtk_cell_renderer_text_new(),
2595 "text", 0, (char *)NULL
);
2596 gtk_tree_view_column_set_sizing(column
, GTK_TREE_VIEW_COLUMN_AUTOSIZE
);
2597 gtk_tree_view_append_column(GTK_TREE_VIEW(w
), column
);
2598 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w
))),
2599 "changed", G_CALLBACK(family_changed
), fs
);
2600 g_signal_connect(G_OBJECT(w
), "row-activated",
2601 G_CALLBACK(alias_resolve
), fs
);
2603 scroll
= gtk_scrolled_window_new(NULL
, NULL
);
2604 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll
),
2606 gtk_container_add(GTK_CONTAINER(scroll
), w
);
2607 gtk_widget_show(scroll
);
2608 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll
),
2609 GTK_POLICY_AUTOMATIC
, GTK_POLICY_ALWAYS
);
2610 gtk_widget_set_size_request(scroll
, font_width
, lists_height
);
2611 gtk_table_attach(GTK_TABLE(table
), scroll
, 0, 1, 1, 3, GTK_FILL
,
2612 GTK_EXPAND
| GTK_FILL
, 0, 0);
2613 fs
->family_model
= model
;
2614 fs
->family_list
= w
;
2616 label
= gtk_label_new_with_mnemonic("_Style:");
2617 gtk_widget_show(label
);
2618 gtk_misc_set_alignment(GTK_MISC(label
), 0.0, 0.0);
2619 gtk_table_attach(GTK_TABLE(table
), label
, 1, 2, 0, 1, GTK_FILL
, 0, 0, 0);
2622 * The Style list box can contain insensitive elements
2623 * (character set headings for server-side fonts), so we add
2624 * an extra column to the list store to hold that information.
2626 model
= gtk_list_store_new(4, G_TYPE_STRING
, G_TYPE_INT
, G_TYPE_INT
,
2628 w
= gtk_tree_view_new_with_model(GTK_TREE_MODEL(model
));
2629 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w
), FALSE
);
2630 gtk_label_set_mnemonic_widget(GTK_LABEL(label
), w
);
2632 column
= gtk_tree_view_column_new_with_attributes
2633 ("Style", gtk_cell_renderer_text_new(),
2634 "text", 0, "sensitive", 3, (char *)NULL
);
2635 gtk_tree_view_column_set_sizing(column
, GTK_TREE_VIEW_COLUMN_AUTOSIZE
);
2636 gtk_tree_view_append_column(GTK_TREE_VIEW(w
), column
);
2637 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w
))),
2638 "changed", G_CALLBACK(style_changed
), fs
);
2640 scroll
= gtk_scrolled_window_new(NULL
, NULL
);
2641 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll
),
2643 gtk_container_add(GTK_CONTAINER(scroll
), w
);
2644 gtk_widget_show(scroll
);
2645 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll
),
2646 GTK_POLICY_AUTOMATIC
, GTK_POLICY_ALWAYS
);
2647 gtk_widget_set_size_request(scroll
, style_width
, lists_height
);
2648 gtk_table_attach(GTK_TABLE(table
), scroll
, 1, 2, 1, 3, GTK_FILL
,
2649 GTK_EXPAND
| GTK_FILL
, 0, 0);
2650 fs
->style_model
= model
;
2653 label
= gtk_label_new_with_mnemonic("Si_ze:");
2654 gtk_widget_show(label
);
2655 gtk_misc_set_alignment(GTK_MISC(label
), 0.0, 0.0);
2656 gtk_table_attach(GTK_TABLE(table
), label
, 2, 3, 0, 1, GTK_FILL
, 0, 0, 0);
2659 * The Size label attaches primarily to a text input box so
2660 * that the user can select a size of their choice. The list
2661 * of available sizes is secondary.
2663 fs
->size_entry
= w
= gtk_entry_new();
2664 gtk_label_set_mnemonic_widget(GTK_LABEL(label
), w
);
2665 gtk_widget_set_size_request(w
, size_width
, -1);
2667 gtk_table_attach(GTK_TABLE(table
), w
, 2, 3, 1, 2, GTK_FILL
, 0, 0, 0);
2668 g_signal_connect(G_OBJECT(w
), "changed", G_CALLBACK(size_entry_changed
),
2671 model
= gtk_list_store_new(3, G_TYPE_STRING
, G_TYPE_INT
, G_TYPE_INT
);
2672 w
= gtk_tree_view_new_with_model(GTK_TREE_MODEL(model
));
2673 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w
), FALSE
);
2675 column
= gtk_tree_view_column_new_with_attributes
2676 ("Size", gtk_cell_renderer_text_new(),
2677 "text", 0, (char *)NULL
);
2678 gtk_tree_view_column_set_sizing(column
, GTK_TREE_VIEW_COLUMN_AUTOSIZE
);
2679 gtk_tree_view_append_column(GTK_TREE_VIEW(w
), column
);
2680 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w
))),
2681 "changed", G_CALLBACK(size_changed
), fs
);
2683 scroll
= gtk_scrolled_window_new(NULL
, NULL
);
2684 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll
),
2686 gtk_container_add(GTK_CONTAINER(scroll
), w
);
2687 gtk_widget_show(scroll
);
2688 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll
),
2689 GTK_POLICY_AUTOMATIC
, GTK_POLICY_ALWAYS
);
2690 gtk_table_attach(GTK_TABLE(table
), scroll
, 2, 3, 2, 3, GTK_FILL
,
2691 GTK_EXPAND
| GTK_FILL
, 0, 0);
2692 fs
->size_model
= model
;
2698 fs
->preview_area
= gtk_drawing_area_new();
2699 fs
->preview_pixmap
= NULL
;
2700 fs
->preview_width
= 0;
2701 fs
->preview_height
= 0;
2702 fs
->preview_fg
.pixel
= fs
->preview_bg
.pixel
= 0;
2703 fs
->preview_fg
.red
= fs
->preview_fg
.green
= fs
->preview_fg
.blue
= 0x0000;
2704 fs
->preview_bg
.red
= fs
->preview_bg
.green
= fs
->preview_bg
.blue
= 0xFFFF;
2705 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs
->preview_fg
,
2707 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs
->preview_bg
,
2709 gtk_signal_connect(GTK_OBJECT(fs
->preview_area
), "expose_event",
2710 GTK_SIGNAL_FUNC(unifontsel_expose_area
), fs
);
2711 gtk_signal_connect(GTK_OBJECT(fs
->preview_area
), "configure_event",
2712 GTK_SIGNAL_FUNC(unifontsel_configure_area
), fs
);
2713 gtk_widget_set_size_request(fs
->preview_area
, 1, preview_height
);
2714 gtk_widget_show(fs
->preview_area
);
2715 ww
= fs
->preview_area
;
2716 w
= gtk_frame_new(NULL
);
2717 gtk_container_add(GTK_CONTAINER(w
), ww
);
2719 #if GTK_CHECK_VERSION(2,4,0)
2721 /* GtkAlignment seems to be the simplest way to put padding round things */
2722 w
= gtk_alignment_new(0, 0, 1, 1);
2723 gtk_alignment_set_padding(GTK_ALIGNMENT(w
), 8, 8, 8, 8);
2724 gtk_container_add(GTK_CONTAINER(w
), ww
);
2728 w
= gtk_frame_new("Preview of font");
2729 gtk_container_add(GTK_CONTAINER(w
), ww
);
2731 gtk_table_attach(GTK_TABLE(table
), w
, 0, 3, 3, 4,
2732 GTK_EXPAND
| GTK_FILL
, GTK_EXPAND
| GTK_FILL
, 0, 8);
2735 w
= gtk_check_button_new_with_label("Show client-side fonts");
2736 gtk_object_set_data(GTK_OBJECT(w
), "user-data",
2737 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE
));
2738 gtk_signal_connect(GTK_OBJECT(w
), "toggled",
2739 GTK_SIGNAL_FUNC(unifontsel_button_toggled
), fs
);
2741 fs
->filter_buttons
[i
++] = w
;
2742 gtk_table_attach(GTK_TABLE(table
), w
, 0, 3, 4, 5, GTK_FILL
, 0, 0, 0);
2743 w
= gtk_check_button_new_with_label("Show server-side fonts");
2744 gtk_object_set_data(GTK_OBJECT(w
), "user-data",
2745 GINT_TO_POINTER(FONTFLAG_SERVERSIDE
));
2746 gtk_signal_connect(GTK_OBJECT(w
), "toggled",
2747 GTK_SIGNAL_FUNC(unifontsel_button_toggled
), fs
);
2749 fs
->filter_buttons
[i
++] = w
;
2750 gtk_table_attach(GTK_TABLE(table
), w
, 0, 3, 5, 6, GTK_FILL
, 0, 0, 0);
2751 w
= gtk_check_button_new_with_label("Show server-side font aliases");
2752 gtk_object_set_data(GTK_OBJECT(w
), "user-data",
2753 GINT_TO_POINTER(FONTFLAG_SERVERALIAS
));
2754 gtk_signal_connect(GTK_OBJECT(w
), "toggled",
2755 GTK_SIGNAL_FUNC(unifontsel_button_toggled
), fs
);
2757 fs
->filter_buttons
[i
++] = w
;
2758 gtk_table_attach(GTK_TABLE(table
), w
, 0, 3, 6, 7, GTK_FILL
, 0, 0, 0);
2759 w
= gtk_check_button_new_with_label("Show non-monospaced fonts");
2760 gtk_object_set_data(GTK_OBJECT(w
), "user-data",
2761 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED
));
2762 gtk_signal_connect(GTK_OBJECT(w
), "toggled",
2763 GTK_SIGNAL_FUNC(unifontsel_button_toggled
), fs
);
2765 fs
->filter_buttons
[i
++] = w
;
2766 gtk_table_attach(GTK_TABLE(table
), w
, 0, 3, 7, 8, GTK_FILL
, 0, 0, 0);
2768 assert(i
== lenof(fs
->filter_buttons
));
2769 fs
->filter_flags
= FONTFLAG_CLIENTSIDE
| FONTFLAG_SERVERSIDE
|
2770 FONTFLAG_SERVERALIAS
;
2771 unifontsel_set_filter_buttons(fs
);
2774 * Go and find all the font names, and set up our master font
2777 fs
->fonts_by_realname
= newtree234(fontinfo_realname_compare
);
2778 fs
->fonts_by_selorder
= newtree234(fontinfo_selorder_compare
);
2779 for (i
= 0; i
< lenof(unifont_types
); i
++)
2780 unifont_types
[i
]->enum_fonts(GTK_WIDGET(fs
->u
.window
),
2781 unifontsel_add_entry
, fs
);
2784 * And set up the initial font names list.
2786 unifontsel_setup_familylist(fs
);
2788 fs
->selsize
= fs
->intendedsize
= 13; /* random default */
2789 gtk_widget_set_sensitive(fs
->u
.ok_button
, FALSE
);
2791 return (unifontsel
*)fs
;
2794 void unifontsel_destroy(unifontsel
*fontsel
)
2796 unifontsel_internal
*fs
= (unifontsel_internal
*)fontsel
;
2799 if (fs
->preview_pixmap
)
2800 gdk_pixmap_unref(fs
->preview_pixmap
);
2802 freetree234(fs
->fonts_by_selorder
);
2803 while ((info
= delpos234(fs
->fonts_by_realname
, 0)) != NULL
)
2805 freetree234(fs
->fonts_by_realname
);
2807 gtk_widget_destroy(GTK_WIDGET(fs
->u
.window
));
2811 void unifontsel_set_name(unifontsel
*fontsel
, const char *fontname
)
2813 unifontsel_internal
*fs
= (unifontsel_internal
*)fontsel
;
2814 int i
, start
, end
, size
, flags
;
2815 const char *fontname2
= NULL
;
2819 * Provide a default if given an empty or null font name.
2821 if (!fontname
|| !*fontname
)
2822 fontname
= "server:fixed";
2825 * Call the canonify_fontname function.
2827 fontname
= unifont_do_prefix(fontname
, &start
, &end
);
2828 for (i
= start
; i
< end
; i
++) {
2829 fontname2
= unifont_types
[i
]->canonify_fontname
2830 (GTK_WIDGET(fs
->u
.window
), fontname
, &size
, &flags
, FALSE
);
2835 return; /* font name not recognised */
2838 * Now look up the canonified font name in our index.
2841 struct fontinfo_realname_find f
;
2842 f
.realname
= fontname2
;
2844 info
= find234(fs
->fonts_by_realname
, &f
, fontinfo_realname_find
);
2848 * If we've found the font, and its size field is either
2849 * correct or zero (the latter indicating a scalable font),
2850 * then we're done. Otherwise, try looking up the original
2851 * font name instead.
2853 if (!info
|| (info
->size
!= size
&& info
->size
!= 0)) {
2854 struct fontinfo_realname_find f
;
2855 f
.realname
= fontname
;
2858 info
= find234(fs
->fonts_by_realname
, &f
, fontinfo_realname_find
);
2859 if (!info
|| info
->size
!= size
)
2860 return; /* font name not in our index */
2864 * Now we've got a fontinfo structure and a font size, so we
2865 * know everything we need to fill in all the fields in the
2868 unifontsel_select_font(fs
, info
, size
, 0, TRUE
);
2871 char *unifontsel_get_name(unifontsel
*fontsel
)
2873 unifontsel_internal
*fs
= (unifontsel_internal
*)fontsel
;
2879 if (fs
->selected
->size
== 0) {
2880 name
= fs
->selected
->fontclass
->scale_fontname
2881 (GTK_WIDGET(fs
->u
.window
), fs
->selected
->realname
, fs
->selsize
);
2883 char *ret
= dupcat(fs
->selected
->fontclass
->prefix
, ":",
2890 return dupcat(fs
->selected
->fontclass
->prefix
, ":",
2891 fs
->selected
->realname
, NULL
);
2894 #endif /* GTK_CHECK_VERSION(2,0,0) */