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
17 #if !GTK_CHECK_VERSION(3,0,0)
18 #include <gdk/gdkkeysyms.h>
21 #define MAY_REFER_TO_GTK_IN_HEADERS
25 #include "gtkcompat.h"
32 #include <X11/Xutil.h>
33 #include <X11/Xatom.h>
39 * - it would be nice to have a display of the current font name,
40 * and in particular whether it's client- or server-side,
41 * during the progress of the font selector.
44 #if !GLIB_CHECK_VERSION(1,3,7)
45 #define g_ascii_strcasecmp g_strcasecmp
46 #define g_ascii_strncasecmp g_strncasecmp
50 * Ad-hoc vtable mechanism to allow font structures to be
53 * Any instance of `unifont' used in the vtable functions will
54 * actually be the first element of a larger structure containing
55 * data specific to the subtype. This is permitted by the ISO C
56 * provision that one may safely cast between a pointer to a
57 * structure and a pointer to its first element.
60 #define FONTFLAG_CLIENTSIDE 0x0001
61 #define FONTFLAG_SERVERSIDE 0x0002
62 #define FONTFLAG_SERVERALIAS 0x0004
63 #define FONTFLAG_NONMONOSPACED 0x0008
65 #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
67 typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
68 const char *family, const char *charset,
69 const char *style, const char *stylekey,
71 const struct unifont_vtable *fontclass);
73 struct unifont_vtable {
75 * `Methods' of the `class'.
77 unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
78 int shadowoffset, int shadowalways);
79 unifont *(*create_fallback)(GtkWidget *widget, int height, int wide,
80 int bold, int shadowoffset, int shadowalways);
81 void (*destroy)(unifont *font);
82 int (*has_glyph)(unifont *font, wchar_t glyph);
83 void (*draw_text)(unifont_drawctx *ctx, unifont *font,
84 int x, int y, const wchar_t *string, int len,
85 int wide, int bold, int cellwidth);
86 void (*draw_combining)(unifont_drawctx *ctx, unifont *font,
87 int x, int y, const wchar_t *string, int len,
88 int wide, 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,
92 int *flags, int resolve_aliases);
93 char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
94 char *(*size_increment)(unifont *font, int increment);
97 * `Static data members' of the `class'.
102 #ifndef NOT_X_WINDOWS
104 /* ----------------------------------------------------------------------
105 * X11 font implementation, directly using Xlib calls. Conditioned out
106 * if X11 fonts aren't available at all (e.g. building with GTK3 for a
107 * back end other than X).
110 static int x11font_has_glyph(unifont *font, wchar_t glyph);
111 static void x11font_draw_text(unifont_drawctx *ctx, unifont *font,
112 int x, int y, const wchar_t *string, int len,
113 int wide, int bold, int cellwidth);
114 static void x11font_draw_combining(unifont_drawctx *ctx, unifont *font,
115 int x, int y, const wchar_t *string,
116 int len, int wide, int bold, int cellwidth);
117 static unifont *x11font_create(GtkWidget *widget, const char *name,
119 int shadowoffset, int shadowalways);
120 static void x11font_destroy(unifont *font);
121 static void x11font_enum_fonts(GtkWidget *widget,
122 fontsel_add_entry callback, void *callback_ctx);
123 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
124 int *size, int *flags,
125 int resolve_aliases);
126 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
128 static char *x11font_size_increment(unifont *font, int increment);
130 #ifdef DRAW_TEXT_CAIRO
131 struct cairo_cached_glyph {
132 cairo_surface_t *surface;
133 unsigned char *bitmap;
138 * Structure storing a single physical XFontStruct, plus associated
141 typedef struct x11font_individual {
142 /* The XFontStruct itself. */
146 * The `allocated' flag indicates whether we've tried to fetch
147 * this subfont already (thus distinguishing xfs==NULL because we
148 * haven't tried yet from xfs==NULL because we tried and failed,
149 * so that we don't keep trying and failing subsequently).
153 #ifdef DRAW_TEXT_CAIRO
155 * A cache of glyph bitmaps downloaded from the X server when
156 * we're in Cairo rendering mode. If glyphcache itself is
157 * non-NULL, then entries in [0,nglyphs) are expected to be
158 * initialised to either NULL or a bitmap pointer.
160 struct cairo_cached_glyph *glyphcache;
164 * X server paraphernalia for actually downloading the glyphs.
168 int pixwidth, pixheight, pixoriginx, pixoriginy;
171 * Paraphernalia for loading the resulting bitmaps into Cairo.
173 int rowsize, allsize, indexflip;
176 } x11font_individual;
181 * Individual physical X fonts. We store a number of these, for
182 * automatically guessed bold and wide variants.
184 x11font_individual fonts[4];
186 * `sixteen_bit' is true iff the font object is indexed by
187 * values larger than a byte. That is, this flag tells us
188 * whether we use XDrawString or XDrawString16, etc.
192 * `variable' is true iff the font is non-fixed-pitch. This
193 * enables some code which takes greater care over character
194 * positioning during text drawing.
198 * real_charset is the charset used when translating text into the
199 * font's internal encoding inside draw_text(). This need not be
200 * the same as the public_charset provided to the client; for
201 * example, public_charset might be CS_ISO8859_1 while
202 * real_charset is CS_ISO8859_1_X11.
206 * Data passed in to unifont_create().
208 int wide, bold, shadowoffset, shadowalways;
211 static const struct unifont_vtable x11font_vtable = {
213 NULL, /* no fallback fonts in X11 */
217 x11font_draw_combining,
219 x11font_canonify_fontname,
220 x11font_scale_fontname,
221 x11font_size_increment,
225 #define XLFD_STRING_PARTS_LIST(S,I) \
238 S(charset_registry) \
239 S(charset_encoding) \
242 /* Special value for int fields that xlfd_recompose will render as "*" */
243 #define XLFD_INT_WILDCARD INT_MIN
245 struct xlfd_decomposed {
246 #define STR_FIELD(f) const char *f;
247 #define INT_FIELD(f) int f;
248 XLFD_STRING_PARTS_LIST(STR_FIELD, INT_FIELD)
253 static struct xlfd_decomposed *xlfd_decompose(const char *xlfd)
256 char *p, *components[14];
257 struct xlfd_decomposed *dec;
263 mem = smalloc(sizeof(struct xlfd_decomposed) + strlen(xlfd) + 1);
264 p = ((char *)mem) + sizeof(struct xlfd_decomposed);
266 dec = (struct xlfd_decomposed *)mem;
268 for (i = 0; i < 14; i++) {
270 /* Malformed XLFD: not enough '-' */
276 p += strcspn(p, "-");
279 /* Malformed XLFD: too many '-' */
285 #define STORE_STR(f) dec->f = components[i++];
286 #define STORE_INT(f) dec->f = atoi(components[i++]);
287 XLFD_STRING_PARTS_LIST(STORE_STR, STORE_INT)
294 static char *xlfd_recompose(const struct xlfd_decomposed *dec)
296 #define FMT_STR(f) "-%s"
297 #define ARG_STR(f) , dec->f
298 #define FMT_INT(f) "%s%.*d"
300 , dec->f == XLFD_INT_WILDCARD ? "-*" : "-" \
301 , dec->f == XLFD_INT_WILDCARD ? 0 : 1 \
302 , dec->f == XLFD_INT_WILDCARD ? 0 : dec->f
303 return dupprintf(XLFD_STRING_PARTS_LIST(FMT_STR, FMT_INT)
304 XLFD_STRING_PARTS_LIST(ARG_STR, ARG_INT));
311 static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide)
313 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
314 Atom fontprop = XInternAtom(disp, "FONT", False);
316 if (XGetFontProperty(xfs, fontprop, &ret)) {
317 char *name = XGetAtomName(disp, (Atom)ret);
318 struct xlfd_decomposed *xlfd = xlfd_decompose(name);
323 xlfd->weight_name = "bold";
326 /* Width name obviously may have changed. */
327 /* Additional style may now become e.g. `ja' or `ko'. */
328 xlfd->setwidth_name = xlfd->add_style_name = "*";
330 /* Expect to double the average width. */
331 xlfd->average_width *= 2;
335 char *ret = xlfd_recompose(xlfd);
343 static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
349 return XTextWidth16(xfs, &space, 1);
351 return XTextWidth(xfs, "0", 1);
355 static const XCharStruct *x11_char_struct(
356 XFontStruct *xfs, unsigned char byte1, unsigned char byte2)
361 * The man page for XQueryFont is rather confusing about how the
362 * per_char array in the XFontStruct is laid out, because it gives
363 * formulae for determining the two-byte X character code _from_
364 * an index into the per_char array. Going the other way, it's
367 * The valid character codes have byte1 between min_byte1 and
368 * max_byte1 inclusive, and byte2 between min_char_or_byte2 and
369 * max_char_or_byte2 inclusive. This gives a rectangle of size
370 * (max_byte2-min_byte1+1) by
371 * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the
372 * rectangle encoded in the per_char array. Hence, given a
373 * character code which is valid in the sense that it falls
374 * somewhere in that rectangle, its index in per_char is given by
377 * x = byte2 - min_char_or_byte2
378 * y = byte1 - min_byte1
379 * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x
381 * If min_byte1 and min_byte2 are both zero, that's a special case
382 * which can be treated as if min_byte2 was 1 instead, i.e. the
383 * per_char array just runs from min_char_or_byte2 to
384 * max_char_or_byte2 inclusive, and byte1 should always be zero.
387 if (byte2 < xfs->min_char_or_byte2 || byte2 > xfs->max_char_or_byte2)
390 if (xfs->min_byte1 == 0 && xfs->max_byte1 == 0) {
391 index = byte2 - xfs->min_char_or_byte2;
393 if (byte1 < xfs->min_byte1 || byte1 > xfs->max_byte1)
395 index = ((byte2 - xfs->min_char_or_byte2) +
396 ((byte1 - xfs->min_byte1) *
397 (xfs->max_char_or_byte2 - xfs->min_char_or_byte2 + 1)));
400 if (!xfs->per_char) /* per_char NULL => everything in range exists */
401 return &xfs->max_bounds;
403 return &xfs->per_char[index];
406 static int x11_font_has_glyph(
407 XFontStruct *xfs, unsigned char byte1, unsigned char byte2)
410 * Not to be confused with x11font_has_glyph, which is a method of
411 * the x11font 'class' and hence takes a unifont as argument. This
412 * is the low-level function which grubs about in an actual
413 * XFontStruct to see if a given glyph exists.
415 * We must do this ourselves rather than letting Xlib's
416 * XTextExtents16 do the job, because XTextExtents will helpfully
417 * substitute the font's default_char for any missing glyph and
418 * not tell us it did so, which precisely won't help us find out
419 * which glyphs _are_ missing.
421 const XCharStruct *xcs = x11_char_struct(xfs, byte1, byte2);
422 return xcs && (xcs->ascent + xcs->descent > 0 || xcs->width > 0);
425 static unifont *x11font_create(GtkWidget *widget, const char *name,
427 int shadowoffset, int shadowalways)
429 struct x11font *xfont;
431 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
432 Atom charset_registry, charset_encoding, spacing;
433 unsigned long registry_ret, encoding_ret, spacing_ret;
434 int pubcs, realcs, sixteen_bit, variable;
437 xfs = XLoadQueryFont(disp, name);
441 charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
442 charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
444 pubcs = realcs = CS_NONE;
448 if (XGetFontProperty(xfs, charset_registry, ®istry_ret) &&
449 XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
451 reg = XGetAtomName(disp, (Atom)registry_ret);
452 enc = XGetAtomName(disp, (Atom)encoding_ret);
454 char *encoding = dupcat(reg, "-", enc, NULL);
455 pubcs = realcs = charset_from_xenc(encoding);
458 * iso10646-1 is the only wide font encoding we
459 * support. In this case, we expect clients to give us
460 * UTF-8, which this module must internally convert
461 * into 16-bit Unicode.
463 if (!strcasecmp(encoding, "iso10646-1")) {
465 pubcs = realcs = CS_UTF8;
469 * Hack for X line-drawing characters: if the primary font
470 * is encoded as ISO-8859-1, and has valid glyphs in the
471 * low character positions, it is assumed that those
472 * glyphs are the VT100 line-drawing character set.
474 if (pubcs == CS_ISO8859_1) {
476 for (ch = 1; ch < 32; ch++)
477 if (!x11_font_has_glyph(xfs, 0, ch))
480 realcs = CS_ISO8859_1_X11;
487 spacing = XInternAtom(disp, "SPACING", False);
488 if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
490 spc = XGetAtomName(disp, (Atom)spacing_ret);
492 if (spc && strchr("CcMm", spc[0]))
496 xfont = snew(struct x11font);
497 xfont->u.vt = &x11font_vtable;
498 xfont->u.width = x11_font_width(xfs, sixteen_bit);
499 xfont->u.ascent = xfs->ascent;
500 xfont->u.descent = xfs->descent;
501 xfont->u.height = xfont->u.ascent + xfont->u.descent;
502 xfont->u.public_charset = pubcs;
503 xfont->u.want_fallback = TRUE;
505 xfont->u.preferred_drawtype = DRAWTYPE_GDK;
506 #elif defined DRAW_TEXT_CAIRO
507 xfont->u.preferred_drawtype = DRAWTYPE_CAIRO;
509 #error No drawtype available at all
511 xfont->real_charset = realcs;
512 xfont->sixteen_bit = sixteen_bit;
513 xfont->variable = variable;
516 xfont->shadowoffset = shadowoffset;
517 xfont->shadowalways = shadowalways;
519 for (i = 0; i < lenof(xfont->fonts); i++) {
520 xfont->fonts[i].xfs = NULL;
521 xfont->fonts[i].allocated = FALSE;
522 #ifdef DRAW_TEXT_CAIRO
523 xfont->fonts[i].glyphcache = NULL;
524 xfont->fonts[i].nglyphs = 0;
525 xfont->fonts[i].pixmap = None;
526 xfont->fonts[i].gc = None;
529 xfont->fonts[0].xfs = xfs;
530 xfont->fonts[0].allocated = TRUE;
532 return (unifont *)xfont;
535 static void x11font_destroy(unifont *font)
537 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
538 struct x11font *xfont = (struct x11font *)font;
541 for (i = 0; i < lenof(xfont->fonts); i++) {
542 if (xfont->fonts[i].xfs)
543 XFreeFont(disp, xfont->fonts[i].xfs);
544 #ifdef DRAW_TEXT_CAIRO
545 if (xfont->fonts[i].gc != None)
546 XFreeGC(disp, xfont->fonts[i].gc);
547 if (xfont->fonts[i].pixmap != None)
548 XFreePixmap(disp, xfont->fonts[i].pixmap);
549 if (xfont->fonts[i].glyphcache) {
551 for (j = 0; j < xfont->fonts[i].nglyphs; j++) {
552 cairo_surface_destroy(xfont->fonts[i].glyphcache[j].surface);
553 sfree(xfont->fonts[i].glyphcache[j].bitmap);
555 sfree(xfont->fonts[i].glyphcache);
562 static void x11_alloc_subfont(struct x11font *xfont, int sfid)
564 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
565 char *derived_name = x11_guess_derived_font_name
566 (xfont->fonts[0].xfs, sfid & 1, !!(sfid & 2));
567 xfont->fonts[sfid].xfs = XLoadQueryFont(disp, derived_name);
568 xfont->fonts[sfid].allocated = TRUE;
570 /* Note that xfont->fonts[sfid].xfs may still be NULL, if XLQF failed. */
573 static int x11font_has_glyph(unifont *font, wchar_t glyph)
575 struct x11font *xfont = (struct x11font *)font;
577 if (xfont->sixteen_bit) {
579 * This X font has 16-bit character indices, which means
580 * we can directly use our Unicode input value.
582 return x11_font_has_glyph(xfont->fonts[0].xfs,
583 glyph >> 8, glyph & 0xFF);
586 * This X font has 8-bit indices, so we must convert to the
587 * appropriate character set.
590 int sblen = wc_to_mb(xfont->real_charset, 0, &glyph, 1,
591 sbstring, 2, "", NULL, NULL);
592 if (sblen == 0 || !sbstring[0])
593 return FALSE; /* not even in the charset */
595 return x11_font_has_glyph(xfont->fonts[0].xfs, 0,
596 (unsigned char)sbstring[0]);
600 #if !GTK_CHECK_VERSION(2,0,0)
601 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
602 #elif GTK_CHECK_VERSION(3,0,0)
603 #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XID(d) /* GTK3's name for this */
606 static int x11font_width_16(unifont_drawctx *ctx, x11font_individual *xfi,
607 const void *vstring, int start, int length)
609 const XChar2b *string = (const XChar2b *)vstring;
610 return XTextWidth16(xfi->xfs, string+start, length);
613 static int x11font_width_8(unifont_drawctx *ctx, x11font_individual *xfi,
614 const void *vstring, int start, int length)
616 const char *string = (const char *)vstring;
617 return XTextWidth(xfi->xfs, string+start, length);
621 static void x11font_gdk_setup(unifont_drawctx *ctx, x11font_individual *xfi)
623 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
624 XSetFont(disp, GDK_GC_XGC(ctx->u.gdk.gc), xfi->xfs->fid);
627 static void x11font_gdk_draw_16(unifont_drawctx *ctx,
628 x11font_individual *xfi, int x, int y,
629 const void *vstring, int start, int length)
631 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
632 const XChar2b *string = (const XChar2b *)vstring;
633 XDrawString16(disp, GDK_DRAWABLE_XID(ctx->u.gdk.target),
634 GDK_GC_XGC(ctx->u.gdk.gc), x, y, string+start, length);
637 static void x11font_gdk_draw_8(unifont_drawctx *ctx,
638 x11font_individual *xfi, int x, int y,
639 const void *vstring, int start, int length)
641 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
642 const char *string = (const char *)vstring;
643 XDrawString(disp, GDK_DRAWABLE_XID(ctx->u.gdk.target),
644 GDK_GC_XGC(ctx->u.gdk.gc), x, y, string+start, length);
648 #ifdef DRAW_TEXT_CAIRO
649 static void x11font_cairo_setup(unifont_drawctx *ctx, x11font_individual *xfi)
651 if (xfi->pixmap == None) {
652 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
654 GdkWindow *widgetwin = gtk_widget_get_window(ctx->u.cairo.widget);
655 int widgetscr = GDK_SCREEN_XNUMBER(gdk_window_get_screen(widgetwin));
658 xfi->xfs->max_bounds.rbearing - xfi->xfs->min_bounds.lbearing;
660 xfi->xfs->max_bounds.ascent + xfi->xfs->max_bounds.descent;
661 xfi->pixoriginx = -xfi->xfs->min_bounds.lbearing;
662 xfi->pixoriginy = xfi->xfs->max_bounds.ascent;
664 xfi->rowsize = cairo_format_stride_for_width(CAIRO_FORMAT_A1,
666 xfi->allsize = xfi->rowsize * xfi->pixheight;
670 * Test host endianness and use it to set xfi->indexflip,
671 * which is XORed into our left-shift counts in order to
672 * implement the CAIRO_FORMAT_A1 specification, in which
673 * each bitmap byte is oriented LSB-first on little-endian
674 * platforms and MSB-first on big-endian ones.
676 * This is the same technique Cairo itself uses to test
677 * endianness, so hopefully it'll work in any situation
678 * where Cairo is usable at all.
680 static const int endianness_test = 1;
681 xfi->indexflip = (*((char *) &endianness_test) == 1) ? 0 : 7;
684 xfi->pixmap = XCreatePixmap
686 GDK_DRAWABLE_XID(gtk_widget_get_window(ctx->u.cairo.widget)),
687 xfi->pixwidth, xfi->pixheight, 1);
688 gcvals.foreground = WhitePixel(disp, widgetscr);
689 gcvals.background = BlackPixel(disp, widgetscr);
690 gcvals.font = xfi->xfs->fid;
691 xfi->gc = XCreateGC(disp, xfi->pixmap,
692 GCForeground | GCBackground | GCFont, &gcvals);
696 static void x11font_cairo_cache_glyph(x11font_individual *xfi, int glyphindex)
700 unsigned char *bitmap;
701 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
702 const XCharStruct *xcs = x11_char_struct(xfi->xfs, glyphindex >> 8,
705 bitmap = snewn(xfi->allsize, unsigned char);
706 memset(bitmap, 0, xfi->allsize);
708 image = XGetImage(disp, xfi->pixmap, 0, 0,
709 xfi->pixwidth, xfi->pixheight, AllPlanes, XYPixmap);
710 for (y = xfi->pixoriginy - xcs->ascent;
711 y < xfi->pixoriginy + xcs->descent; y++) {
712 for (x = xfi->pixoriginx + xcs->lbearing;
713 x < xfi->pixoriginx + xcs->rbearing; x++) {
714 unsigned long pixel = XGetPixel(image, x, y);
716 int byteindex = y * xfi->rowsize + x/8;
717 int bitindex = (x & 7) ^ xfi->indexflip;
718 bitmap[byteindex] |= 1U << bitindex;
722 XDestroyImage(image);
724 if (xfi->nglyphs <= glyphindex) {
725 /* Round up to the next multiple of 256 on the general
726 * principle that Unicode characters come in contiguous blocks
727 * often used together */
728 int old_nglyphs = xfi->nglyphs;
729 xfi->nglyphs = (glyphindex + 0x100) & ~0xFF;
730 xfi->glyphcache = sresize(xfi->glyphcache, xfi->nglyphs,
731 struct cairo_cached_glyph);
733 while (old_nglyphs < xfi->nglyphs) {
734 xfi->glyphcache[old_nglyphs].surface = NULL;
735 xfi->glyphcache[old_nglyphs].bitmap = NULL;
739 xfi->glyphcache[glyphindex].bitmap = bitmap;
740 xfi->glyphcache[glyphindex].surface = cairo_image_surface_create_for_data
741 (bitmap, CAIRO_FORMAT_A1, xfi->pixwidth, xfi->pixheight, xfi->rowsize);
744 static void x11font_cairo_draw_glyph(unifont_drawctx *ctx,
745 x11font_individual *xfi, int x, int y,
748 if (xfi->glyphcache[glyphindex].surface) {
749 cairo_mask_surface(ctx->u.cairo.cr,
750 xfi->glyphcache[glyphindex].surface,
751 x - xfi->pixoriginx, y - xfi->pixoriginy);
755 static void x11font_cairo_draw_16(unifont_drawctx *ctx,
756 x11font_individual *xfi, int x, int y,
757 const void *vstring, int start, int length)
759 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
760 const XChar2b *string = (const XChar2b *)vstring + start;
762 for (i = 0; i < length; i++) {
763 if (x11_font_has_glyph(xfi->xfs, string[i].byte1, string[i].byte2)) {
764 int glyphindex = (256 * (unsigned char)string[i].byte1 +
765 (unsigned char)string[i].byte2);
766 if (glyphindex >= xfi->nglyphs ||
767 !xfi->glyphcache[glyphindex].surface) {
768 XDrawImageString16(disp, xfi->pixmap, xfi->gc,
769 xfi->pixoriginx, xfi->pixoriginy,
771 x11font_cairo_cache_glyph(xfi, glyphindex);
773 x11font_cairo_draw_glyph(ctx, xfi, x, y, glyphindex);
774 x += XTextWidth16(xfi->xfs, string+i, 1);
779 static void x11font_cairo_draw_8(unifont_drawctx *ctx,
780 x11font_individual *xfi, int x, int y,
781 const void *vstring, int start, int length)
783 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
784 const char *string = (const char *)vstring + start;
786 for (i = 0; i < length; i++) {
787 if (x11_font_has_glyph(xfi->xfs, 0, string[i])) {
788 int glyphindex = (unsigned char)string[i];
789 if (glyphindex >= xfi->nglyphs ||
790 !xfi->glyphcache[glyphindex].surface) {
791 XDrawImageString(disp, xfi->pixmap, xfi->gc,
792 xfi->pixoriginx, xfi->pixoriginy,
794 x11font_cairo_cache_glyph(xfi, glyphindex);
796 x11font_cairo_draw_glyph(ctx, xfi, x, y, glyphindex);
797 x += XTextWidth(xfi->xfs, string+i, 1);
801 #endif /* DRAW_TEXT_CAIRO */
803 struct x11font_drawfuncs {
804 int (*width)(unifont_drawctx *ctx, x11font_individual *xfi,
805 const void *vstring, int start, int length);
806 void (*setup)(unifont_drawctx *ctx, x11font_individual *xfi);
807 void (*draw)(unifont_drawctx *ctx, x11font_individual *xfi, int x, int y,
808 const void *vstring, int start, int length);
812 * This array has two entries per compiled-in drawtype; of each pair,
813 * the first is for an 8-bit font and the second for 16-bit.
815 static const struct x11font_drawfuncs x11font_drawfuncs[2*DRAWTYPE_NTYPES] = {
830 #ifdef DRAW_TEXT_CAIRO
835 x11font_cairo_draw_8,
837 /* [3] cairo, 16-bit */
841 x11font_cairo_draw_16,
846 static void x11font_really_draw_text(const struct x11font_drawfuncs *dfns,
847 unifont_drawctx *ctx,
848 x11font_individual *xfi, int x, int y,
849 const void *string, int nchars,
851 int fontvariable, int cellwidth)
853 int start = 0, step, nsteps, centre;
857 * In a variable-pitch font, we draw one character at a
858 * time, and centre it in the character cell.
865 * In a fixed-pitch font, we can draw the whole lot in one go.
872 dfns->setup(ctx, xfi);
874 while (nsteps-- > 0) {
877 X += (cellwidth - dfns->width(ctx, xfi, string, start, step)) / 2;
879 dfns->draw(ctx, xfi, X, y, string, start, step);
881 dfns->draw(ctx, xfi, X + shadowoffset, y, string, start, step);
888 static void x11font_draw_text(unifont_drawctx *ctx, unifont *font,
889 int x, int y, const wchar_t *string, int len,
890 int wide, int bold, int cellwidth)
892 struct x11font *xfont = (struct x11font *)font;
894 int shadowoffset = 0;
895 int mult = (wide ? 2 : 1);
896 int index = 2 * (int)ctx->type;
902 * Decide which subfont we're using, and whether we have to
905 if (xfont->shadowalways && bold) {
906 shadowoffset = xfont->shadowoffset;
909 sfid = 2 * wide + bold;
910 if (!xfont->fonts[sfid].allocated)
911 x11_alloc_subfont(xfont, sfid);
912 if (bold && !xfont->fonts[sfid].xfs) {
914 shadowoffset = xfont->shadowoffset;
915 sfid = 2 * wide + bold;
916 if (!xfont->fonts[sfid].allocated)
917 x11_alloc_subfont(xfont, sfid);
920 if (!xfont->fonts[sfid].xfs)
921 return; /* we've tried our best, but no luck */
923 if (xfont->sixteen_bit) {
925 * This X font has 16-bit character indices, which means
926 * we can directly use our Unicode input string.
931 xcs = snewn(len, XChar2b);
932 for (i = 0; i < len; i++) {
933 xcs[i].byte1 = string[i] >> 8;
934 xcs[i].byte2 = string[i];
937 x11font_really_draw_text(x11font_drawfuncs + index + 1, ctx,
938 &xfont->fonts[sfid], x, y,
939 xcs, len, shadowoffset,
940 xfont->variable, cellwidth * mult);
944 * This X font has 8-bit indices, so we must convert to the
945 * appropriate character set.
947 char *sbstring = snewn(len+1, char);
948 int sblen = wc_to_mb(xfont->real_charset, 0, string, len,
949 sbstring, len+1, ".", NULL, NULL);
950 x11font_really_draw_text(x11font_drawfuncs + index + 0, ctx,
951 &xfont->fonts[sfid], x, y,
952 sbstring, sblen, shadowoffset,
953 xfont->variable, cellwidth * mult);
958 static void x11font_draw_combining(unifont_drawctx *ctx, unifont *font,
959 int x, int y, const wchar_t *string,
960 int len, int wide, int bold, int cellwidth)
963 * For server-side fonts, there's no sophisticated system for
964 * combining characters intelligently, so the best we can do is to
965 * overprint them on each other in the obvious way.
968 for (i = 0; i < len; i++)
969 x11font_draw_text(ctx, font, x, y, string+i, 1, wide, bold, cellwidth);
972 static void x11font_enum_fonts(GtkWidget *widget,
973 fontsel_add_entry callback, void *callback_ctx)
975 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
978 int nnames, i, max, tmpsize;
982 fontnames = XListFonts(disp, "*", max, &nnames);
984 XFreeFontNames(fontnames);
992 for (i = 0; i < nnames; i++) {
993 struct xlfd_decomposed *xlfd = xlfd_decompose(fontnames[i]);
995 char *p, *font, *style, *stylekey, *charset;
996 int weightkey, slantkey, setwidthkey;
1000 * Convert a dismembered XLFD into the format we'll be
1001 * using in the font selector.
1004 thistmpsize = 4 * strlen(fontnames[i]) + 256;
1005 if (tmpsize < thistmpsize) {
1006 tmpsize = thistmpsize;
1007 tmp = sresize(tmp, tmpsize, char);
1012 * Font name is in the form "family (foundry)". (This is
1013 * what the GTK 1.2 X font selector does, and it seems to
1014 * come out looking reasonably sensible.)
1017 p += 1 + sprintf(p, "%s (%s)", xlfd->family_name, xlfd->foundry);
1023 p += 1 + sprintf(p, "%s-%s", xlfd->charset_registry,
1024 xlfd->charset_encoding);
1027 * Style is a mixture of quite a lot of the fields,
1028 * with some strange formatting.
1031 p += sprintf(p, "%s", xlfd->weight_name[0] ? xlfd->weight_name :
1033 if (!g_ascii_strcasecmp(xlfd->slant, "i"))
1034 p += sprintf(p, " italic");
1035 else if (!g_ascii_strcasecmp(xlfd->slant, "o"))
1036 p += sprintf(p, " oblique");
1037 else if (!g_ascii_strcasecmp(xlfd->slant, "ri"))
1038 p += sprintf(p, " reverse italic");
1039 else if (!g_ascii_strcasecmp(xlfd->slant, "ro"))
1040 p += sprintf(p, " reverse oblique");
1041 else if (!g_ascii_strcasecmp(xlfd->slant, "ot"))
1042 p += sprintf(p, " other-slant");
1043 if (xlfd->setwidth_name[0] &&
1044 g_ascii_strcasecmp(xlfd->setwidth_name, "normal"))
1045 p += sprintf(p, " %s", xlfd->setwidth_name);
1046 if (!g_ascii_strcasecmp(xlfd->spacing, "m"))
1047 p += sprintf(p, " [M]");
1048 if (!g_ascii_strcasecmp(xlfd->spacing, "c"))
1049 p += sprintf(p, " [C]");
1050 if (xlfd->add_style_name[0])
1051 p += sprintf(p, " %s", xlfd->add_style_name);
1054 * Style key is the same stuff as above, but with a
1055 * couple of transformations done on it to make it
1056 * sort more sensibly.
1060 if (!g_ascii_strcasecmp(xlfd->weight_name, "medium") ||
1061 !g_ascii_strcasecmp(xlfd->weight_name, "regular") ||
1062 !g_ascii_strcasecmp(xlfd->weight_name, "normal") ||
1063 !g_ascii_strcasecmp(xlfd->weight_name, "book"))
1065 else if (!g_ascii_strncasecmp(xlfd->weight_name, "demi", 4) ||
1066 !g_ascii_strncasecmp(xlfd->weight_name, "semi", 4))
1070 if (!g_ascii_strcasecmp(xlfd->slant, "r"))
1072 else if (!g_ascii_strncasecmp(xlfd->slant, "r", 1))
1076 if (!g_ascii_strcasecmp(xlfd->setwidth_name, "normal"))
1082 p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
1083 weightkey, (int)strlen(xlfd->weight_name), xlfd->weight_name,
1084 slantkey, (int)strlen(xlfd->slant), xlfd->slant,
1086 (int)strlen(xlfd->setwidth_name), xlfd->setwidth_name,
1087 (int)strlen(xlfd->spacing), xlfd->spacing,
1088 (int)strlen(xlfd->add_style_name), xlfd->add_style_name);
1090 assert(p - tmp < thistmpsize);
1093 * Flags: we need to know whether this is a monospaced
1094 * font, which we do by examining the spacing field
1097 flags = FONTFLAG_SERVERSIDE;
1098 if (!strchr("CcMm", xlfd->spacing[0]))
1099 flags |= FONTFLAG_NONMONOSPACED;
1102 * Some fonts have a pixel size of zero, meaning they're
1103 * treated as scalable. For these purposes, we only want
1104 * fonts whose pixel size we actually know, so filter
1107 if (xlfd->pixel_size)
1108 callback(callback_ctx, fontnames[i], font, charset,
1109 style, stylekey, xlfd->pixel_size, flags,
1115 * This isn't an XLFD, so it must be an alias.
1116 * Transmit it with mostly null data.
1118 * It would be nice to work out if it's monospaced
1119 * here, but at the moment I can't see that being
1120 * anything but computationally hideous. Ah well.
1122 callback(callback_ctx, fontnames[i], fontnames[i], NULL,
1123 NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
1128 XFreeFontNames(fontnames);
1131 static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
1132 int *size, int *flags,
1133 int resolve_aliases)
1136 * When given an X11 font name to try to make sense of for a
1137 * font selector, we must attempt to load it (to see if it
1138 * exists), and then canonify it by extracting its FONT
1139 * property, which should give its full XLFD even if what we
1140 * originally had was a wildcard.
1142 * However, we must carefully avoid canonifying font
1143 * _aliases_, unless specifically asked to, because the font
1144 * selector treats them as worthwhile in their own right.
1147 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
1148 Atom fontprop, fontprop2;
1151 xfs = XLoadQueryFont(disp, name);
1154 return NULL; /* didn't make sense to us, sorry */
1156 fontprop = XInternAtom(disp, "FONT", False);
1158 if (XGetFontProperty(xfs, fontprop, &ret)) {
1159 char *newname = XGetAtomName(disp, (Atom)ret);
1161 unsigned long fsize = 12;
1163 fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
1164 if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
1166 XFreeFont(disp, xfs);
1168 if (name[0] == '-' || resolve_aliases)
1169 *flags = FONTFLAG_SERVERSIDE;
1171 *flags = FONTFLAG_SERVERALIAS;
1173 return dupstr(name[0] == '-' || resolve_aliases ?
1179 XFreeFont(disp, xfs);
1181 return NULL; /* something went wrong */
1184 static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
1187 return NULL; /* shan't */
1190 static char *x11font_size_increment(unifont *font, int increment)
1192 struct x11font *xfont = (struct x11font *)font;
1193 Display *disp = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
1194 Atom fontprop = XInternAtom(disp, "FONT", False);
1195 char *returned_name = NULL;
1197 if (XGetFontProperty(xfont->fonts[0].xfs, fontprop, &ret)) {
1198 struct xlfd_decomposed *xlfd;
1199 struct xlfd_decomposed *xlfd_best;
1204 xlfd = xlfd_decompose(XGetAtomName(disp, (Atom)ret));
1209 * Form a wildcard consisting of everything in the
1210 * original XLFD except for the size-related fields.
1213 struct xlfd_decomposed xlfd_wc = *xlfd; /* structure copy */
1214 xlfd_wc.pixel_size = XLFD_INT_WILDCARD;
1215 xlfd_wc.point_size = XLFD_INT_WILDCARD;
1216 xlfd_wc.average_width = XLFD_INT_WILDCARD;
1217 wc = xlfd_recompose(&xlfd_wc);
1221 * Fetch all the font names matching that wildcard.
1225 fontnames = XListFonts(disp, wc, max, &nnames);
1226 if (nnames >= max) {
1227 XFreeFontNames(fontnames);
1236 * Iterate over those to find the one closest in size to the
1237 * original font, in the correct direction.
1240 #define FLIPPED_SIZE(xlfd) \
1241 (((xlfd)->pixel_size + (xlfd)->point_size) * \
1242 (increment < 0 ? -1 : +1))
1245 for (i = 0; i < nnames; i++) {
1246 struct xlfd_decomposed *xlfd2 = xlfd_decompose(fontnames[i]);
1250 if (xlfd2->pixel_size != 0 &&
1251 FLIPPED_SIZE(xlfd2) > FLIPPED_SIZE(xlfd) &&
1252 (!xlfd_best || FLIPPED_SIZE(xlfd2)<FLIPPED_SIZE(xlfd_best))) {
1264 char *bare_returned_name = xlfd_recompose(xlfd_best);
1265 returned_name = dupcat(
1266 xfont->u.vt->prefix, ":", bare_returned_name,
1267 (const char *)NULL);
1268 sfree(bare_returned_name);
1271 XFreeFontNames(fontnames);
1275 return returned_name;
1278 #endif /* NOT_X_WINDOWS */
1280 #if GTK_CHECK_VERSION(2,0,0)
1282 /* ----------------------------------------------------------------------
1283 * Pango font implementation (for GTK 2 only).
1286 #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
1287 #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
1290 static int pangofont_has_glyph(unifont *font, wchar_t glyph);
1291 static void pangofont_draw_text(unifont_drawctx *ctx, unifont *font,
1292 int x, int y, const wchar_t *string, int len,
1293 int wide, int bold, int cellwidth);
1294 static void pangofont_draw_combining(unifont_drawctx *ctx, unifont *font,
1295 int x, int y, const wchar_t *string,
1296 int len, int wide, int bold,
1298 static unifont *pangofont_create(GtkWidget *widget, const char *name,
1300 int shadowoffset, int shadowalways);
1301 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
1303 int shadowoffset, int shadowalways);
1304 static void pangofont_destroy(unifont *font);
1305 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1306 void *callback_ctx);
1307 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1308 int *size, int *flags,
1309 int resolve_aliases);
1310 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1312 static char *pangofont_size_increment(unifont *font, int increment);
1319 PangoFontDescription *desc;
1322 * The containing widget.
1326 * Data passed in to unifont_create().
1328 int bold, shadowoffset, shadowalways;
1330 * Cache of character widths, indexed by Unicode code point. In
1331 * pixels; -1 means we haven't asked Pango about this character
1335 unsigned nwidthcache;
1338 static const struct unifont_vtable pangofont_vtable = {
1340 pangofont_create_fallback,
1342 pangofont_has_glyph,
1343 pangofont_draw_text,
1344 pangofont_draw_combining,
1345 pangofont_enum_fonts,
1346 pangofont_canonify_fontname,
1347 pangofont_scale_fontname,
1348 pangofont_size_increment,
1353 * This function is used to rigorously validate a
1354 * PangoFontDescription. Later versions of Pango have a nasty
1355 * habit of accepting _any_ old string as input to
1356 * pango_font_description_from_string and returning a font
1357 * description which can actually be used to display text, even if
1358 * they have to do it by falling back to their most default font.
1359 * This is doubtless helpful in some situations, but not here,
1360 * because we need to know if a Pango font string actually _makes
1361 * sense_ in order to fall back to treating it as an X font name
1362 * if it doesn't. So we check that the font family is actually one
1363 * supported by Pango.
1365 static int pangofont_check_desc_makes_sense(PangoContext *ctx,
1366 PangoFontDescription *desc)
1368 #ifndef PANGO_PRE_1POINT6
1371 PangoFontFamily **families;
1372 int i, nfamilies, matched;
1375 * Ask Pango for a list of font families, and iterate through
1376 * them to see if one of them matches the family in the
1377 * PangoFontDescription.
1379 #ifndef PANGO_PRE_1POINT6
1380 map = pango_context_get_font_map(ctx);
1383 pango_font_map_list_families(map, &families, &nfamilies);
1385 pango_context_list_families(ctx, &families, &nfamilies);
1389 for (i = 0; i < nfamilies; i++) {
1390 if (!g_ascii_strcasecmp(pango_font_family_get_name(families[i]),
1391 pango_font_description_get_family(desc))) {
1401 static unifont *pangofont_create_internal(GtkWidget *widget,
1403 PangoFontDescription *desc,
1405 int shadowoffset, int shadowalways)
1407 struct pangofont *pfont;
1408 #ifndef PANGO_PRE_1POINT6
1412 PangoFontMetrics *metrics;
1414 #ifndef PANGO_PRE_1POINT6
1415 map = pango_context_get_font_map(ctx);
1417 pango_font_description_free(desc);
1420 fset = pango_font_map_load_fontset(map, ctx, desc,
1421 pango_context_get_language(ctx));
1423 fset = pango_context_load_fontset(ctx, desc,
1424 pango_context_get_language(ctx));
1427 pango_font_description_free(desc);
1430 metrics = pango_fontset_get_metrics(fset);
1432 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1433 pango_font_description_free(desc);
1434 g_object_unref(fset);
1438 pfont = snew(struct pangofont);
1439 pfont->u.vt = &pangofont_vtable;
1441 PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
1442 pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
1443 pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
1444 pfont->u.height = pfont->u.ascent + pfont->u.descent;
1445 pfont->u.want_fallback = FALSE;
1446 #ifdef DRAW_TEXT_CAIRO
1447 pfont->u.preferred_drawtype = DRAWTYPE_CAIRO;
1448 #elif defined DRAW_TEXT_GDK
1449 pfont->u.preferred_drawtype = DRAWTYPE_GDK;
1451 #error No drawtype available at all
1453 /* The Pango API is hardwired to UTF-8 */
1454 pfont->u.public_charset = CS_UTF8;
1457 pfont->widget = widget;
1459 pfont->shadowoffset = shadowoffset;
1460 pfont->shadowalways = shadowalways;
1461 pfont->widthcache = NULL;
1462 pfont->nwidthcache = 0;
1464 pango_font_metrics_unref(metrics);
1466 return (unifont *)pfont;
1469 static unifont *pangofont_create(GtkWidget *widget, const char *name,
1471 int shadowoffset, int shadowalways)
1474 PangoFontDescription *desc;
1476 desc = pango_font_description_from_string(name);
1479 ctx = gtk_widget_get_pango_context(widget);
1481 pango_font_description_free(desc);
1484 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1485 pango_font_description_free(desc);
1488 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1489 shadowoffset, shadowalways);
1492 static unifont *pangofont_create_fallback(GtkWidget *widget, int height,
1494 int shadowoffset, int shadowalways)
1497 PangoFontDescription *desc;
1499 desc = pango_font_description_from_string("Monospace");
1502 ctx = gtk_widget_get_pango_context(widget);
1504 pango_font_description_free(desc);
1507 pango_font_description_set_absolute_size(desc, height * PANGO_SCALE);
1508 return pangofont_create_internal(widget, ctx, desc, wide, bold,
1509 shadowoffset, shadowalways);
1512 static void pangofont_destroy(unifont *font)
1514 struct pangofont *pfont = (struct pangofont *)font;
1515 pango_font_description_free(pfont->desc);
1516 sfree(pfont->widthcache);
1517 g_object_unref(pfont->fset);
1521 static int pangofont_char_width(PangoLayout *layout, struct pangofont *pfont,
1522 wchar_t uchr, const char *utfchr, int utflen)
1525 * Here we check whether a character has the same width as the
1526 * character cell it'll be drawn in. Because profiling showed that
1527 * asking Pango for text sizes was a huge bottleneck when we were
1528 * calling it every time we needed to know this, we instead call
1529 * it only on characters we don't already know about, and cache
1533 if ((unsigned)uchr >= pfont->nwidthcache) {
1534 unsigned newsize = ((int)uchr + 0x100) & ~0xFF;
1535 pfont->widthcache = sresize(pfont->widthcache, newsize, int);
1536 while (pfont->nwidthcache < newsize)
1537 pfont->widthcache[pfont->nwidthcache++] = -1;
1540 if (pfont->widthcache[uchr] < 0) {
1541 PangoRectangle rect;
1542 pango_layout_set_text(layout, utfchr, utflen);
1543 pango_layout_get_extents(layout, NULL, &rect);
1544 pfont->widthcache[uchr] = rect.width;
1547 return pfont->widthcache[uchr];
1550 static int pangofont_has_glyph(unifont *font, wchar_t glyph)
1552 /* Pango implements font fallback, so assume it has everything */
1556 #ifdef DRAW_TEXT_GDK
1557 static void pango_gdk_draw_layout(unifont_drawctx *ctx,
1558 gint x, gint y, PangoLayout *layout)
1560 gdk_draw_layout(ctx->u.gdk.target, ctx->u.gdk.gc, x, y, layout);
1564 #ifdef DRAW_TEXT_CAIRO
1565 static void pango_cairo_draw_layout(unifont_drawctx *ctx,
1566 gint x, gint y, PangoLayout *layout)
1568 cairo_move_to(ctx->u.cairo.cr, x, y);
1569 pango_cairo_show_layout(ctx->u.cairo.cr, layout);
1573 static void pangofont_draw_internal(unifont_drawctx *ctx, unifont *font,
1574 int x, int y, const wchar_t *string,
1575 int len, int wide, int bold, int cellwidth,
1578 struct pangofont *pfont = (struct pangofont *)font;
1579 PangoLayout *layout;
1580 PangoRectangle rect;
1581 char *utfstring, *utfptr;
1583 int shadowbold = FALSE;
1584 void (*draw_layout)(unifont_drawctx *ctx,
1585 gint x, gint y, PangoLayout *layout) = NULL;
1587 #ifdef DRAW_TEXT_GDK
1588 if (ctx->type == DRAWTYPE_GDK) {
1589 draw_layout = pango_gdk_draw_layout;
1592 #ifdef DRAW_TEXT_CAIRO
1593 if (ctx->type == DRAWTYPE_CAIRO) {
1594 draw_layout = pango_cairo_draw_layout;
1601 y -= pfont->u.ascent;
1603 layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
1604 pango_layout_set_font_description(layout, pfont->desc);
1605 if (bold > pfont->bold) {
1606 if (pfont->shadowalways)
1609 PangoFontDescription *desc2 =
1610 pango_font_description_copy_static(pfont->desc);
1611 pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
1612 pango_layout_set_font_description(layout, desc2);
1617 * Pango always expects UTF-8, so convert the input wide character
1620 utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */
1621 utflen = wc_to_mb(CS_UTF8, 0, string, len,
1622 utfstring, len*6+1, ".", NULL, NULL);
1625 while (utflen > 0) {
1627 int desired = cellwidth * PANGO_SCALE;
1630 * We want to display every character from this string in
1631 * the centre of its own character cell. In the worst case,
1632 * this requires a separate text-drawing call for each
1633 * character; but in the common case where the font is
1634 * properly fixed-width, we can draw many characters in one
1635 * go which is much faster.
1637 * This still isn't really ideal. If you look at what
1638 * happens in the X protocol as a result of all of this, you
1639 * find - naturally enough - that each call to
1640 * gdk_draw_layout() generates a separate set of X RENDER
1641 * operations involving creating a picture, setting a clip
1642 * rectangle, doing some drawing and undoing the whole lot.
1643 * In an ideal world, we should _always_ be able to turn the
1644 * contents of this loop into a single RenderCompositeGlyphs
1645 * operation which internally specifies inter-character
1646 * deltas to get the spacing right, which would give us full
1647 * speed _even_ in the worst case of a non-fixed-width font.
1648 * However, Pango's architecture and documentation are so
1649 * unhelpful that I have no idea how if at all to persuade
1655 * For a character with combining stuff, we just dump the
1656 * whole lot in one go, and expect it to take up just one
1663 * Start by extracting a single UTF-8 character from the
1667 while (clen < utflen &&
1668 (unsigned char)utfptr[clen] >= 0x80 &&
1669 (unsigned char)utfptr[clen] < 0xC0)
1673 if (is_rtl(string[0]) ||
1674 pangofont_char_width(layout, pfont, string[n-1],
1675 utfptr, clen) != desired) {
1677 * If this character is a right-to-left one, or has an
1678 * unusual width, then we must display it on its own.
1682 * Try to amalgamate a contiguous string of characters
1683 * with the expected sensible width, for the common case
1684 * in which we're using a monospaced font and everything
1685 * works as expected.
1687 while (clen < utflen) {
1689 clen++; /* skip UTF-8 introducer byte */
1690 while (clen < utflen &&
1691 (unsigned char)utfptr[clen] >= 0x80 &&
1692 (unsigned char)utfptr[clen] < 0xC0)
1695 if (is_rtl(string[n-1]) ||
1696 pangofont_char_width(layout, pfont,
1697 string[n-1], utfptr + oldclen,
1698 clen - oldclen) != desired) {
1707 pango_layout_set_text(layout, utfptr, clen);
1708 pango_layout_get_pixel_extents(layout, NULL, &rect);
1711 x + (n*cellwidth - rect.width)/2,
1712 y + (pfont->u.height - rect.height)/2, layout);
1715 x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
1716 y + (pfont->u.height - rect.height)/2, layout);
1726 g_object_unref(layout);
1729 static void pangofont_draw_text(unifont_drawctx *ctx, unifont *font,
1730 int x, int y, const wchar_t *string, int len,
1731 int wide, int bold, int cellwidth)
1733 pangofont_draw_internal(ctx, font, x, y, string, len, wide, bold,
1737 static void pangofont_draw_combining(unifont_drawctx *ctx, unifont *font,
1738 int x, int y, const wchar_t *string,
1739 int len, int wide, int bold,
1742 wchar_t *tmpstring = NULL;
1743 if (mk_wcwidth(string[0]) == 0) {
1745 * If we've been told to draw a sequence of _only_ combining
1746 * characters, prefix a space so that they have something to
1749 tmpstring = snewn(len+1, wchar_t);
1750 memcpy(tmpstring+1, string, len * sizeof(wchar_t));
1751 tmpstring[0] = L' ';
1755 pangofont_draw_internal(ctx, font, x, y, string, len, wide, bold,
1761 * Dummy size value to be used when converting a
1762 * PangoFontDescription of a scalable font to a string for
1765 #define PANGO_DUMMY_SIZE 12
1767 static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
1771 #ifndef PANGO_PRE_1POINT6
1774 PangoFontFamily **families;
1777 ctx = gtk_widget_get_pango_context(widget);
1782 * Ask Pango for a list of font families, and iterate through
1785 #ifndef PANGO_PRE_1POINT6
1786 map = pango_context_get_font_map(ctx);
1789 pango_font_map_list_families(map, &families, &nfamilies);
1791 pango_context_list_families(ctx, &families, &nfamilies);
1793 for (i = 0; i < nfamilies; i++) {
1794 PangoFontFamily *family = families[i];
1795 const char *familyname;
1797 PangoFontFace **faces;
1801 * Set up our flags for this font family, and get the name
1804 flags = FONTFLAG_CLIENTSIDE;
1805 #ifndef PANGO_PRE_1POINT4
1807 * In very early versions of Pango, we can't tell
1808 * monospaced fonts from non-monospaced.
1810 if (!pango_font_family_is_monospace(family))
1811 flags |= FONTFLAG_NONMONOSPACED;
1813 familyname = pango_font_family_get_name(family);
1816 * Go through the available font faces in this family.
1818 pango_font_family_list_faces(family, &faces, &nfaces);
1819 for (j = 0; j < nfaces; j++) {
1820 PangoFontFace *face = faces[j];
1821 PangoFontDescription *desc;
1822 const char *facename;
1824 int k, nsizes, dummysize;
1827 * Get the face name string.
1829 facename = pango_font_face_get_face_name(face);
1832 * Set up a font description with what we've got so
1833 * far. We'll fill in the size field manually and then
1834 * call pango_font_description_to_string() to give the
1835 * full real name of the specific font.
1837 desc = pango_font_face_describe(face);
1840 * See if this font has a list of specific sizes.
1842 #ifndef PANGO_PRE_1POINT4
1843 pango_font_face_list_sizes(face, &sizes, &nsizes);
1846 * In early versions of Pango, that call wasn't
1847 * supported; we just have to assume everything is
1854 * Write a single entry with a dummy size.
1856 dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
1862 * If so, go through them one by one.
1864 for (k = 0; k < nsizes; k++) {
1868 pango_font_description_set_size(desc, sizes[k]);
1870 fullname = pango_font_description_to_string(desc);
1873 * Construct the sorting key for font styles.
1879 n = pango_font_description_get_weight(desc);
1880 /* Weight: normal, then lighter, then bolder */
1881 if (n <= PANGO_WEIGHT_NORMAL)
1882 n = PANGO_WEIGHT_NORMAL - n;
1883 p += sprintf(p, "%4d", n);
1885 n = pango_font_description_get_style(desc);
1886 p += sprintf(p, " %2d", n);
1888 n = pango_font_description_get_stretch(desc);
1889 /* Stretch: closer to normal sorts earlier */
1890 n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
1891 (n < PANGO_STRETCH_NORMAL);
1892 p += sprintf(p, " %2d", n);
1894 n = pango_font_description_get_variant(desc);
1895 p += sprintf(p, " %2d", n);
1900 * Got everything. Hand off to the callback.
1901 * (The charset string is NULL, because only
1902 * server-side X fonts use it.)
1904 callback(callback_ctx, fullname, familyname, NULL, facename,
1906 (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
1907 flags, &pangofont_vtable);
1911 if (sizes != &dummysize)
1914 pango_font_description_free(desc);
1921 static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
1922 int *size, int *flags,
1923 int resolve_aliases)
1926 * When given a Pango font name to try to make sense of for a
1927 * font selector, we must normalise it to PANGO_DUMMY_SIZE and
1928 * extract its original size (in pixels) into the `size' field.
1931 #ifndef PANGO_PRE_1POINT6
1934 PangoFontDescription *desc;
1936 PangoFontMetrics *metrics;
1937 char *newname, *retname;
1939 desc = pango_font_description_from_string(name);
1942 ctx = gtk_widget_get_pango_context(widget);
1944 pango_font_description_free(desc);
1947 if (!pangofont_check_desc_makes_sense(ctx, desc)) {
1948 pango_font_description_free(desc);
1951 #ifndef PANGO_PRE_1POINT6
1952 map = pango_context_get_font_map(ctx);
1954 pango_font_description_free(desc);
1957 fset = pango_font_map_load_fontset(map, ctx, desc,
1958 pango_context_get_language(ctx));
1960 fset = pango_context_load_fontset(ctx, desc,
1961 pango_context_get_language(ctx));
1964 pango_font_description_free(desc);
1967 metrics = pango_fontset_get_metrics(fset);
1969 pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
1970 pango_font_description_free(desc);
1971 g_object_unref(fset);
1975 *size = PANGO_PIXELS(pango_font_description_get_size(desc));
1976 *flags = FONTFLAG_CLIENTSIDE;
1977 pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
1978 newname = pango_font_description_to_string(desc);
1979 retname = dupstr(newname);
1982 pango_font_metrics_unref(metrics);
1983 pango_font_description_free(desc);
1984 g_object_unref(fset);
1989 static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
1992 PangoFontDescription *desc;
1993 char *newname, *retname;
1995 desc = pango_font_description_from_string(name);
1998 pango_font_description_set_size(desc, size * PANGO_SCALE);
1999 newname = pango_font_description_to_string(desc);
2000 retname = dupstr(newname);
2002 pango_font_description_free(desc);
2007 static char *pangofont_size_increment(unifont *font, int increment)
2009 struct pangofont *pfont = (struct pangofont *)font;
2010 PangoFontDescription *desc;
2012 char *newname, *retname;
2014 desc = pango_font_description_copy_static(pfont->desc);
2016 size = pango_font_description_get_size(desc);
2017 size += PANGO_SCALE * increment;
2022 pango_font_description_set_size(desc, size);
2023 newname = pango_font_description_to_string(desc);
2024 retname = dupcat(pfont->u.vt->prefix, ":",
2025 newname, (const char *)NULL);
2029 pango_font_description_free(desc);
2033 #endif /* GTK_CHECK_VERSION(2,0,0) */
2035 /* ----------------------------------------------------------------------
2036 * Outermost functions which do the vtable dispatch.
2040 * Complete list of font-type subclasses. Listed in preference
2041 * order for unifont_create(). (That is, in the extremely unlikely
2042 * event that the same font name is valid as both a Pango and an
2043 * X11 font, it will be interpreted as the former in the absence
2044 * of an explicit type-disambiguating prefix.)
2046 * The 'multifont' subclass is omitted here, as discussed above.
2048 static const struct unifont_vtable *unifont_types[] = {
2049 #if GTK_CHECK_VERSION(2,0,0)
2052 #ifndef NOT_X_WINDOWS
2058 * Function which takes a font name and processes the optional
2059 * scheme prefix. Returns the tail of the font name suitable for
2060 * passing to individual font scheme functions, and also provides
2061 * a subrange of the unifont_types[] array above.
2063 * The return values `start' and `end' denote a half-open interval
2064 * in unifont_types[]; that is, the correct way to iterate over
2067 * for (i = start; i < end; i++) {...}
2069 static const char *unifont_do_prefix(const char *name, int *start, int *end)
2071 int colonpos = strcspn(name, ":");
2074 if (name[colonpos]) {
2076 * There's a colon prefix on the font name. Use it to work
2077 * out which subclass to use.
2079 for (i = 0; i < lenof(unifont_types); i++) {
2080 if (strlen(unifont_types[i]->prefix) == colonpos &&
2081 !strncmp(unifont_types[i]->prefix, name, colonpos)) {
2084 return name + colonpos + 1;
2088 * None matched, so return an empty scheme list to prevent
2089 * any scheme from being called at all.
2092 return name + colonpos + 1;
2095 * No colon prefix, so just use all the subclasses.
2098 *end = lenof(unifont_types);
2103 unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
2104 int bold, int shadowoffset, int shadowalways)
2108 name = unifont_do_prefix(name, &start, &end);
2110 for (i = start; i < end; i++) {
2111 unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
2112 shadowoffset, shadowalways);
2116 return NULL; /* font not found in any scheme */
2119 void unifont_destroy(unifont *font)
2121 font->vt->destroy(font);
2124 void unifont_draw_text(unifont_drawctx *ctx, unifont *font,
2125 int x, int y, const wchar_t *string, int len,
2126 int wide, int bold, int cellwidth)
2128 font->vt->draw_text(ctx, font, x, y, string, len, wide, bold, cellwidth);
2131 void unifont_draw_combining(unifont_drawctx *ctx, unifont *font,
2132 int x, int y, const wchar_t *string, int len,
2133 int wide, int bold, int cellwidth)
2135 font->vt->draw_combining(ctx, font, x, y, string, len, wide, bold,
2139 char *unifont_size_increment(unifont *font, int increment)
2141 return font->vt->size_increment(font, increment);
2144 /* ----------------------------------------------------------------------
2145 * Multiple-font wrapper. This is a type of unifont which encapsulates
2146 * up to two other unifonts, permitting missing glyphs in the main
2147 * font to be filled in by a fallback font.
2149 * This is a type of unifont just like the previous two, but it has a
2150 * separate constructor which is manually called by the client, so it
2151 * doesn't appear in the list of available font types enumerated by
2152 * unifont_create. This means it's not used by unifontsel either, so
2153 * it doesn't need to support any methods except draw_text and
2157 static void multifont_draw_text(unifont_drawctx *ctx, unifont *font,
2158 int x, int y, const wchar_t *string, int len,
2159 int wide, int bold, int cellwidth);
2160 static void multifont_draw_combining(unifont_drawctx *ctx, unifont *font,
2161 int x, int y, const wchar_t *string,
2162 int len, int wide, int bold,
2164 static void multifont_destroy(unifont *font);
2165 static char *multifont_size_increment(unifont *font, int increment);
2173 static const struct unifont_vtable multifont_vtable = {
2174 NULL, /* creation is done specially */
2178 multifont_draw_text,
2179 multifont_draw_combining,
2183 multifont_size_increment,
2187 unifont *multifont_create(GtkWidget *widget, const char *name,
2189 int shadowoffset, int shadowalways)
2192 unifont *font, *fallback;
2193 struct multifont *mfont;
2195 font = unifont_create(widget, name, wide, bold,
2196 shadowoffset, shadowalways);
2201 if (font->want_fallback) {
2202 for (i = 0; i < lenof(unifont_types); i++) {
2203 if (unifont_types[i]->create_fallback) {
2204 fallback = unifont_types[i]->create_fallback
2205 (widget, font->height, wide, bold,
2206 shadowoffset, shadowalways);
2214 * Construct our multifont. Public members are all copied from the
2215 * primary font we're wrapping.
2217 mfont = snew(struct multifont);
2218 mfont->u.vt = &multifont_vtable;
2219 mfont->u.width = font->width;
2220 mfont->u.ascent = font->ascent;
2221 mfont->u.descent = font->descent;
2222 mfont->u.height = font->height;
2223 mfont->u.public_charset = font->public_charset;
2224 mfont->u.want_fallback = FALSE; /* shouldn't be needed, but just in case */
2225 mfont->u.preferred_drawtype = font->preferred_drawtype;
2227 mfont->fallback = fallback;
2229 return (unifont *)mfont;
2232 static void multifont_destroy(unifont *font)
2234 struct multifont *mfont = (struct multifont *)font;
2235 unifont_destroy(mfont->main);
2236 if (mfont->fallback)
2237 unifont_destroy(mfont->fallback);
2241 typedef void (*unifont_draw_func_t)(unifont_drawctx *ctx, unifont *font,
2242 int x, int y, const wchar_t *string,
2243 int len, int wide, int bold,
2246 static void multifont_draw_main(unifont_drawctx *ctx, unifont *font, int x,
2247 int y, const wchar_t *string, int len,
2248 int wide, int bold, int cellwidth,
2249 int cellinc, unifont_draw_func_t draw)
2251 struct multifont *mfont = (struct multifont *)font;
2257 * Find a maximal sequence of characters which are, or are
2258 * not, supported by our main font.
2260 ok = mfont->main->vt->has_glyph(mfont->main, string[0]);
2263 !mfont->main->vt->has_glyph(mfont->main, string[i]) == !ok;
2269 f = ok ? mfont->main : mfont->fallback;
2271 draw(ctx, f, x, y, string, i, wide, bold, cellwidth);
2278 static void multifont_draw_text(unifont_drawctx *ctx, unifont *font, int x,
2279 int y, const wchar_t *string, int len,
2280 int wide, int bold, int cellwidth)
2282 multifont_draw_main(ctx, font, x, y, string, len, wide, bold,
2283 cellwidth, cellwidth, unifont_draw_text);
2286 static void multifont_draw_combining(unifont_drawctx *ctx, unifont *font,
2287 int x, int y, const wchar_t *string,
2288 int len, int wide, int bold,
2291 multifont_draw_main(ctx, font, x, y, string, len, wide, bold,
2292 cellwidth, 0, unifont_draw_combining);
2295 static char *multifont_size_increment(unifont *font, int increment)
2297 struct multifont *mfont = (struct multifont *)font;
2298 return unifont_size_increment(mfont->main, increment);
2301 #if GTK_CHECK_VERSION(2,0,0)
2303 /* ----------------------------------------------------------------------
2304 * Implementation of a unified font selector. Used on GTK 2 only;
2305 * for GTK 1 we still use the standard font selector.
2308 typedef struct fontinfo fontinfo;
2310 typedef struct unifontsel_internal {
2311 /* This must be the structure's first element, for cross-casting */
2313 GtkListStore *family_model, *style_model, *size_model;
2314 GtkWidget *family_list, *style_list, *size_entry, *size_list;
2315 GtkWidget *filter_buttons[4];
2316 int n_filter_buttons;
2317 GtkWidget *preview_area;
2318 #ifndef NO_BACKING_PIXMAPS
2319 GdkPixmap *preview_pixmap;
2321 int preview_width, preview_height;
2322 GdkColor preview_fg, preview_bg;
2324 tree234 *fonts_by_realname, *fonts_by_selorder;
2326 int selsize, intendedsize;
2327 int inhibit_response; /* inhibit callbacks when we change GUI controls */
2328 } unifontsel_internal;
2331 * The structure held in the tree234s. All the string members are
2332 * part of the same allocated area, so don't need freeing
2337 char *family, *charset, *style, *stylekey;
2340 * Fallback sorting key, to permit multiple identical entries
2341 * to exist in the selorder tree.
2345 * Indices mapping fontinfo structures to indices in the list
2346 * boxes. sizeindex is irrelevant if the font is scalable
2349 int familyindex, styleindex, sizeindex;
2351 * The class of font.
2353 const struct unifont_vtable *fontclass;
2356 struct fontinfo_realname_find {
2357 const char *realname;
2361 static int strnullcasecmp(const char *a, const char *b)
2366 * If exactly one of the inputs is NULL, it compares before
2369 if ((i = (!b) - (!a)) != 0)
2373 * NULL compares equal.
2379 * Otherwise, ordinary strcasecmp.
2381 return g_ascii_strcasecmp(a, b);
2384 static int fontinfo_realname_compare(void *av, void *bv)
2386 fontinfo *a = (fontinfo *)av;
2387 fontinfo *b = (fontinfo *)bv;
2390 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
2392 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
2393 return ((a->flags & FONTFLAG_SORT_MASK) <
2394 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
2398 static int fontinfo_realname_find(void *av, void *bv)
2400 struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
2401 fontinfo *b = (fontinfo *)bv;
2404 if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
2406 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
2407 return ((a->flags & FONTFLAG_SORT_MASK) <
2408 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
2412 static int fontinfo_selorder_compare(void *av, void *bv)
2414 fontinfo *a = (fontinfo *)av;
2415 fontinfo *b = (fontinfo *)bv;
2417 if ((i = strnullcasecmp(a->family, b->family)) != 0)
2420 * Font class comes immediately after family, so that fonts
2421 * from different classes with the same family
2423 if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
2424 return ((a->flags & FONTFLAG_SORT_MASK) <
2425 (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
2426 if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
2428 if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
2430 if ((i = strnullcasecmp(a->style, b->style)) != 0)
2432 if (a->size != b->size)
2433 return (a->size < b->size ? -1 : +1);
2434 if (a->index != b->index)
2435 return (a->index < b->index ? -1 : +1);
2439 static void unifontsel_draw_preview_text(unifontsel_internal *fs);
2441 static void unifontsel_deselect(unifontsel_internal *fs)
2443 fs->selected = NULL;
2444 gtk_list_store_clear(fs->style_model);
2445 gtk_list_store_clear(fs->size_model);
2446 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
2447 gtk_widget_set_sensitive(fs->size_entry, FALSE);
2448 unifontsel_draw_preview_text(fs);
2451 static void unifontsel_setup_familylist(unifontsel_internal *fs)
2454 int i, listindex, minpos = -1, maxpos = -1;
2455 char *currfamily = NULL;
2459 fs->inhibit_response = TRUE;
2461 gtk_list_store_clear(fs->family_model);
2465 * Search through the font tree for anything matching our
2466 * current filter criteria. When we find one, add its font
2467 * name to the list box.
2469 for (i = 0 ;; i++) {
2470 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
2472 * info may be NULL if we've just run off the end of the
2473 * tree. We must still do a processing pass in that
2474 * situation, in case we had an unfinished font record in
2477 if (info && (info->flags &~ fs->filter_flags)) {
2478 info->familyindex = -1;
2479 continue; /* we're filtering out this font */
2481 if (!info || strnullcasecmp(currfamily, info->family) ||
2482 currflags != (info->flags & FONTFLAG_SORT_MASK)) {
2484 * We've either finished a family, or started a new
2488 gtk_list_store_append(fs->family_model, &iter);
2489 gtk_list_store_set(fs->family_model, &iter,
2490 0, currfamily, 1, minpos, 2, maxpos+1, -1);
2495 currfamily = info->family;
2496 currflags = info->flags & FONTFLAG_SORT_MASK;
2500 break; /* now we're done */
2501 info->familyindex = listindex;
2506 * If we've just filtered out the previously selected font,
2507 * deselect it thoroughly.
2509 if (fs->selected && fs->selected->familyindex < 0)
2510 unifontsel_deselect(fs);
2512 fs->inhibit_response = FALSE;
2515 static void unifontsel_setup_stylelist(unifontsel_internal *fs,
2519 int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
2520 char *currcs = NULL, *currstyle = NULL;
2523 gtk_list_store_clear(fs->style_model);
2528 * Search through the font tree for anything matching our
2529 * current filter criteria. When we find one, add its charset
2530 * and/or style name to the list box.
2532 for (i = start; i <= end; i++) {
2536 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
2538 * info may be NULL if we've just run off the end of the
2539 * relevant data. We must still do a processing pass in
2540 * that situation, in case we had an unfinished font
2541 * record in progress.
2543 if (info && (info->flags &~ fs->filter_flags)) {
2544 info->styleindex = -1;
2545 continue; /* we're filtering out this font */
2547 if (!info || !started || strnullcasecmp(currcs, info->charset) ||
2548 strnullcasecmp(currstyle, info->style)) {
2550 * We've either finished a style/charset, or started a
2555 gtk_list_store_append(fs->style_model, &iter);
2556 gtk_list_store_set(fs->style_model, &iter,
2557 0, currstyle, 1, minpos, 2, maxpos+1,
2558 3, TRUE, 4, PANGO_WEIGHT_NORMAL, -1);
2563 if (info->charset && strnullcasecmp(currcs, info->charset)) {
2564 gtk_list_store_append(fs->style_model, &iter);
2565 gtk_list_store_set(fs->style_model, &iter,
2566 0, info->charset, 1, -1, 2, -1,
2567 3, FALSE, 4, PANGO_WEIGHT_BOLD, -1);
2570 currcs = info->charset;
2571 currstyle = info->style;
2575 break; /* now we're done */
2576 info->styleindex = listindex;
2581 static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
2583 static void unifontsel_setup_sizelist(unifontsel_internal *fs,
2591 gtk_list_store_clear(fs->size_model);
2595 * Search through the font tree for anything matching our
2596 * current filter criteria. When we find one, add its font
2597 * name to the list box.
2599 for (i = start; i < end; i++) {
2600 info = (fontinfo *)index234(fs->fonts_by_selorder, i);
2601 if (info->flags &~ fs->filter_flags) {
2602 info->sizeindex = -1;
2603 continue; /* we're filtering out this font */
2606 sprintf(sizetext, "%d", info->size);
2607 info->sizeindex = listindex;
2608 gtk_list_store_append(fs->size_model, &iter);
2609 gtk_list_store_set(fs->size_model, &iter,
2610 0, sizetext, 1, i, 2, info->size, -1);
2618 for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
2619 sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
2620 gtk_list_store_append(fs->size_model, &iter);
2621 gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
2622 2, unifontsel_default_sizes[j], -1);
2629 static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
2633 for (i = 0; i < fs->n_filter_buttons; i++) {
2634 int flagbit = GPOINTER_TO_INT(g_object_get_data
2635 (G_OBJECT(fs->filter_buttons[i]),
2637 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
2638 !!(fs->filter_flags & flagbit));
2642 static void unifontsel_draw_preview_text_inner(unifont_drawctx *dctx,
2643 unifontsel_internal *fs)
2646 char *sizename = NULL;
2647 fontinfo *info = fs->selected;
2650 sizename = info->fontclass->scale_fontname
2651 (GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
2652 font = info->fontclass->create(GTK_WIDGET(fs->u.window),
2653 sizename ? sizename : info->realname,
2654 FALSE, FALSE, 0, 0);
2658 #ifdef DRAW_TEXT_GDK
2659 if (dctx->type == DRAWTYPE_GDK) {
2660 gdk_gc_set_foreground(dctx->u.gdk.gc, &fs->preview_bg);
2661 gdk_draw_rectangle(dctx->u.gdk.target, dctx->u.gdk.gc, 1, 0, 0,
2662 fs->preview_width, fs->preview_height);
2663 gdk_gc_set_foreground(dctx->u.gdk.gc, &fs->preview_fg);
2666 #ifdef DRAW_TEXT_CAIRO
2667 if (dctx->type == DRAWTYPE_CAIRO) {
2668 cairo_set_source_rgb(dctx->u.cairo.cr,
2669 fs->preview_bg.red / 65535.0,
2670 fs->preview_bg.green / 65535.0,
2671 fs->preview_bg.blue / 65535.0);
2672 cairo_paint(dctx->u.cairo.cr);
2673 cairo_set_source_rgb(dctx->u.cairo.cr,
2674 fs->preview_fg.red / 65535.0,
2675 fs->preview_fg.green / 65535.0,
2676 fs->preview_fg.blue / 65535.0);
2682 * The pangram used here is rather carefully
2683 * constructed: it contains a sequence of very narrow
2684 * letters (`jil') and a pair of adjacent very wide
2687 * If the user selects a proportional font, it will be
2688 * coerced into fixed-width character cells when used
2689 * in the actual terminal window. We therefore display
2690 * it the same way in the preview pane, so as to show
2691 * it the way it will actually be displayed - and we
2692 * deliberately pick a pangram which will show the
2693 * resulting miskerning at its worst.
2695 * We aren't trying to sell people these fonts; we're
2696 * trying to let them make an informed choice. Better
2697 * that they find out the problems with using
2698 * proportional fonts in terminal windows here than
2699 * that they go to the effort of selecting their font
2700 * and _then_ realise it was a mistake.
2702 info->fontclass->draw_text(dctx, font,
2704 L"bankrupt jilted showmen quiz convex fogey",
2705 41, FALSE, FALSE, font->width);
2706 info->fontclass->draw_text(dctx, font,
2707 0, font->ascent + font->height,
2708 L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
2709 41, FALSE, FALSE, font->width);
2711 * The ordering of punctuation here is also selected
2712 * with some specific aims in mind. I put ` and '
2713 * together because some software (and people) still
2714 * use them as matched quotes no matter what Unicode
2715 * might say on the matter, so people can quickly
2716 * check whether they look silly in a candidate font.
2717 * The sequence #_@ is there to let people judge the
2718 * suitability of the underscore as an effectively
2719 * alphabetic character (since that's how it's often
2720 * used in practice, at least by programmers).
2722 info->fontclass->draw_text(dctx, font,
2723 0, font->ascent + font->height * 2,
2724 L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
2725 42, FALSE, FALSE, font->width);
2727 info->fontclass->destroy(font);
2733 static void unifontsel_draw_preview_text(unifontsel_internal *fs)
2735 unifont_drawctx dctx;
2738 #ifndef NO_BACKING_PIXMAPS
2739 target = fs->preview_pixmap;
2741 target = gtk_widget_get_window(fs->preview_area);
2743 if (!target) /* we may be called when we haven't created everything yet */
2746 dctx.type = DRAWTYPE_DEFAULT;
2747 #ifdef DRAW_TEXT_GDK
2748 if (dctx.type == DRAWTYPE_GDK) {
2749 dctx.u.gdk.target = target;
2750 dctx.u.gdk.gc = gdk_gc_new(target);
2753 #ifdef DRAW_TEXT_CAIRO
2754 if (dctx.type == DRAWTYPE_CAIRO) {
2755 dctx.u.cairo.widget = GTK_WIDGET(fs->preview_area);
2756 dctx.u.cairo.cr = gdk_cairo_create(target);
2760 unifontsel_draw_preview_text_inner(&dctx, fs);
2762 #ifdef DRAW_TEXT_GDK
2763 if (dctx.type == DRAWTYPE_GDK) {
2764 gdk_gc_unref(dctx.u.gdk.gc);
2767 #ifdef DRAW_TEXT_CAIRO
2768 if (dctx.type == DRAWTYPE_CAIRO) {
2769 cairo_destroy(dctx.u.cairo.cr);
2773 gdk_window_invalidate_rect(gtk_widget_get_window(fs->preview_area),
2777 static void unifontsel_select_font(unifontsel_internal *fs,
2778 fontinfo *info, int size, int leftlist,
2779 int size_is_explicit)
2784 GtkTreePath *treepath;
2787 fs->inhibit_response = TRUE;
2789 fs->selected = info;
2791 if (size_is_explicit)
2792 fs->intendedsize = size;
2794 gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
2797 * Find the index of this fontinfo in the selorder list.
2800 findpos234(fs->fonts_by_selorder, info, NULL, &index);
2804 * Adjust the font selector flags and redo the font family
2805 * list box, if necessary.
2807 if (leftlist <= 0 &&
2808 (fs->filter_flags | info->flags) != fs->filter_flags) {
2809 fs->filter_flags |= info->flags;
2810 unifontsel_set_filter_buttons(fs);
2811 unifontsel_setup_familylist(fs);
2815 * Find the appropriate family name and select it in the list.
2817 assert(info->familyindex >= 0);
2818 treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
2819 gtk_tree_selection_select_path
2820 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
2822 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
2823 treepath, NULL, FALSE, 0.0, 0.0);
2824 success = gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model),
2827 gtk_tree_path_free(treepath);
2830 * Now set up the font style list.
2832 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
2833 1, &minval, 2, &maxval, -1);
2835 unifontsel_setup_stylelist(fs, minval, maxval);
2838 * Find the appropriate style name and select it in the list.
2841 assert(info->styleindex >= 0);
2842 treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
2843 gtk_tree_selection_select_path
2844 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
2846 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
2847 treepath, NULL, FALSE, 0.0, 0.0);
2848 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
2850 gtk_tree_path_free(treepath);
2853 * And set up the size list.
2855 gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
2856 1, &minval, 2, &maxval, -1);
2858 unifontsel_setup_sizelist(fs, minval, maxval);
2861 * Find the appropriate size, and select it in the list.
2864 assert(info->sizeindex >= 0);
2865 treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
2866 gtk_tree_selection_select_path
2867 (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
2869 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2870 treepath, NULL, FALSE, 0.0, 0.0);
2871 gtk_tree_path_free(treepath);
2875 for (j = 0; j < lenof(unifontsel_default_sizes); j++)
2876 if (unifontsel_default_sizes[j] == size) {
2877 treepath = gtk_tree_path_new_from_indices(j, -1);
2878 gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
2879 treepath, NULL, FALSE);
2880 gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
2881 treepath, NULL, FALSE, 0.0,
2883 gtk_tree_path_free(treepath);
2888 * And set up the font size text entry box.
2892 sprintf(sizetext, "%d", size);
2893 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
2897 unifontsel_setup_sizelist(fs, 0, 0);
2898 gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
2902 * Grey out the font size edit box if we're not using a
2905 gtk_editable_set_editable(GTK_EDITABLE(fs->size_entry),
2906 fs->selected->size == 0);
2907 gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
2909 unifontsel_draw_preview_text(fs);
2911 fs->inhibit_response = FALSE;
2914 static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
2916 unifontsel_internal *fs = (unifontsel_internal *)data;
2917 int newstate = gtk_toggle_button_get_active(tb);
2919 int flagbit = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(tb),
2923 newflags = fs->filter_flags | flagbit;
2925 newflags = fs->filter_flags & ~flagbit;
2927 if (fs->filter_flags != newflags) {
2928 fs->filter_flags = newflags;
2929 unifontsel_setup_familylist(fs);
2933 static void unifontsel_add_entry(void *ctx, const char *realfontname,
2934 const char *family, const char *charset,
2935 const char *style, const char *stylekey,
2936 int size, int flags,
2937 const struct unifont_vtable *fontclass)
2939 unifontsel_internal *fs = (unifontsel_internal *)ctx;
2944 totalsize = sizeof(fontinfo) + strlen(realfontname) +
2945 (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
2946 (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
2947 info = (fontinfo *)smalloc(totalsize);
2948 info->fontclass = fontclass;
2949 p = (char *)info + sizeof(fontinfo);
2951 strcpy(p, realfontname);
2958 info->family = NULL;
2964 info->charset = NULL;
2973 strcpy(p, stylekey);
2976 info->stylekey = NULL;
2977 assert(p - (char *)info <= totalsize);
2979 info->flags = flags;
2980 info->index = count234(fs->fonts_by_selorder);
2983 * It's just conceivable that a misbehaving font enumerator
2984 * might tell us about the same font real name more than once,
2985 * in which case we should silently drop the new one.
2987 if (add234(fs->fonts_by_realname, info) != info) {
2992 * However, we should never get a duplicate key in the
2993 * selorder tree, because the index field carefully
2994 * disambiguates otherwise identical records.
2996 add234(fs->fonts_by_selorder, info);
2999 static fontinfo *update_for_intended_size(unifontsel_internal *fs,
3002 fontinfo info2, *below, *above;
3006 * Copy the info structure. This doesn't copy its dynamic
3007 * string fields, but that's unimportant because all we're
3008 * going to do is to adjust the size field and use it in one
3012 info2.size = fs->intendedsize;
3015 * Search in the tree to find the fontinfo structure which
3016 * best approximates the size the user last requested.
3018 below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
3022 above = index234(fs->fonts_by_selorder, pos+1);
3025 * See if we've found it exactly, which is an easy special
3026 * case. If we have, it'll be in `below' and not `above',
3027 * because we did a REL234_LE rather than REL234_LT search.
3029 if (below && !fontinfo_selorder_compare(&info2, below))
3033 * Now we've either found two suitable fonts, one smaller and
3034 * one larger, or we're at one or other extreme end of the
3035 * scale. Find out which, by NULLing out either of below and
3036 * above if it differs from this one in any respect but size
3037 * (and the disambiguating index field). Bear in mind, also,
3038 * that either one might _already_ be NULL if we're at the
3039 * extreme ends of the font list.
3042 info2.size = below->size;
3043 info2.index = below->index;
3044 if (fontinfo_selorder_compare(&info2, below))
3048 info2.size = above->size;
3049 info2.index = above->index;
3050 if (fontinfo_selorder_compare(&info2, above))
3055 * Now return whichever of above and below is non-NULL, if
3056 * that's unambiguous.
3064 * And now we really do have to make a choice about whether to
3065 * round up or down. We'll do it by rounding to nearest,
3066 * breaking ties by rounding up.
3068 if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
3074 static void family_changed(GtkTreeSelection *treeselection, gpointer data)
3076 unifontsel_internal *fs = (unifontsel_internal *)data;
3077 GtkTreeModel *treemodel;
3078 GtkTreeIter treeiter;
3082 if (fs->inhibit_response) /* we made this change ourselves */
3085 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
3088 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
3089 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
3090 info = update_for_intended_size(fs, info);
3092 return; /* _shouldn't_ happen unless font list is completely funted */
3094 fs->selsize = fs->intendedsize; /* font is scalable */
3095 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
3099 static void style_changed(GtkTreeSelection *treeselection, gpointer data)
3101 unifontsel_internal *fs = (unifontsel_internal *)data;
3102 GtkTreeModel *treemodel;
3103 GtkTreeIter treeiter;
3107 if (fs->inhibit_response) /* we made this change ourselves */
3110 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
3113 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
3115 return; /* somehow a charset heading got clicked */
3116 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
3117 info = update_for_intended_size(fs, info);
3119 return; /* _shouldn't_ happen unless font list is completely funted */
3121 fs->selsize = fs->intendedsize; /* font is scalable */
3122 unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
3126 static void size_changed(GtkTreeSelection *treeselection, gpointer data)
3128 unifontsel_internal *fs = (unifontsel_internal *)data;
3129 GtkTreeModel *treemodel;
3130 GtkTreeIter treeiter;
3134 if (fs->inhibit_response) /* we made this change ourselves */
3137 if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
3140 gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
3141 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
3142 unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
3145 static void size_entry_changed(GtkEditable *ed, gpointer data)
3147 unifontsel_internal *fs = (unifontsel_internal *)data;
3151 if (fs->inhibit_response) /* we made this change ourselves */
3154 text = gtk_entry_get_text(GTK_ENTRY(ed));
3158 assert(fs->selected->size == 0);
3159 unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
3163 static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
3164 GtkTreeViewColumn *column, gpointer data)
3166 unifontsel_internal *fs = (unifontsel_internal *)data;
3168 int minval, newsize;
3169 fontinfo *info, *newinfo;
3172 if (fs->inhibit_response) /* we made this change ourselves */
3175 gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
3176 gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
3177 info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
3180 struct fontinfo_realname_find f;
3182 newname = info->fontclass->canonify_fontname
3183 (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
3185 f.realname = newname;
3187 newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
3191 return; /* font name not in our index */
3192 if (newinfo == info)
3193 return; /* didn't change under canonification => not an alias */
3194 unifontsel_select_font(fs, newinfo,
3195 newinfo->size ? newinfo->size : newsize,
3200 #if GTK_CHECK_VERSION(3,0,0)
3201 static gint unifontsel_draw_area(GtkWidget *widget, cairo_t *cr, gpointer data)
3203 unifontsel_internal *fs = (unifontsel_internal *)data;
3204 unifont_drawctx dctx;
3206 dctx.type = DRAWTYPE_CAIRO;
3207 dctx.u.cairo.widget = widget;
3208 dctx.u.cairo.cr = cr;
3209 unifontsel_draw_preview_text_inner(&dctx, fs);
3214 static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
3217 unifontsel_internal *fs = (unifontsel_internal *)data;
3219 #ifndef NO_BACKING_PIXMAPS
3220 if (fs->preview_pixmap) {
3221 gdk_draw_pixmap(gtk_widget_get_window(widget),
3222 (gtk_widget_get_style(widget)->fg_gc
3223 [gtk_widget_get_state(widget)]),
3225 event->area.x, event->area.y,
3226 event->area.x, event->area.y,
3227 event->area.width, event->area.height);
3230 unifontsel_draw_preview_text(fs);
3237 static gint unifontsel_configure_area(GtkWidget *widget,
3238 GdkEventConfigure *event, gpointer data)
3240 #ifndef NO_BACKING_PIXMAPS
3241 unifontsel_internal *fs = (unifontsel_internal *)data;
3242 int ox, oy, nx, ny, x, y;
3245 * Enlarge the pixmap, but never shrink it.
3247 ox = fs->preview_width;
3248 oy = fs->preview_height;
3251 if (x > ox || y > oy) {
3252 if (fs->preview_pixmap)
3253 gdk_pixmap_unref(fs->preview_pixmap);
3255 nx = (x > ox ? x : ox);
3256 ny = (y > oy ? y : oy);
3257 fs->preview_pixmap = gdk_pixmap_new(gtk_widget_get_window(widget),
3259 fs->preview_width = nx;
3260 fs->preview_height = ny;
3262 unifontsel_draw_preview_text(fs);
3266 gdk_window_invalidate_rect(gtk_widget_get_window(widget), NULL, FALSE);
3271 unifontsel *unifontsel_new(const char *wintitle)
3273 unifontsel_internal *fs = snew(unifontsel_internal);
3274 GtkWidget *table, *label, *w, *ww, *scroll;
3275 GtkListStore *model;
3276 GtkTreeViewColumn *column;
3277 int lists_height, preview_height, font_width, style_width, size_width;
3280 fs->inhibit_response = FALSE;
3281 fs->selected = NULL;
3287 * Invent some magic size constants.
3289 get_label_text_dimensions("Quite Long Font Name (Foundry)",
3292 lists_height = 14 * height;
3293 preview_height = 5 * height;
3295 get_label_text_dimensions("Italic Extra Condensed", &width, &height);
3296 style_width = width;
3298 get_label_text_dimensions("48000", &width, &height);
3303 * Create the dialog box and initialise the user-visible
3304 * fields in the returned structure.
3306 fs->u.user_data = NULL;
3307 fs->u.window = GTK_WINDOW(gtk_dialog_new());
3308 gtk_window_set_title(fs->u.window, wintitle);
3309 fs->u.cancel_button = gtk_dialog_add_button
3310 (GTK_DIALOG(fs->u.window), STANDARD_CANCEL_LABEL, GTK_RESPONSE_CANCEL);
3311 fs->u.ok_button = gtk_dialog_add_button
3312 (GTK_DIALOG(fs->u.window), STANDARD_OK_LABEL, GTK_RESPONSE_OK);
3313 gtk_widget_grab_default(fs->u.ok_button);
3316 * Now set up the internal fields, including in particular all
3317 * the controls that actually allow the user to select fonts.
3319 #if GTK_CHECK_VERSION(3,0,0)
3320 table = gtk_grid_new();
3321 gtk_grid_set_column_spacing(GTK_GRID(table), 8);
3323 table = gtk_table_new(8, 3, FALSE);
3324 gtk_table_set_col_spacings(GTK_TABLE(table), 8);
3326 gtk_widget_show(table);
3328 #if GTK_CHECK_VERSION(3,0,0)
3329 /* GtkAlignment has become deprecated and we use the "margin"
3332 g_object_set(G_OBJECT(w), "margin", 8, (const char *)NULL);
3333 #elif GTK_CHECK_VERSION(2,4,0)
3334 /* GtkAlignment seems to be the simplest way to put padding round things */
3335 w = gtk_alignment_new(0, 0, 1, 1);
3336 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
3337 gtk_container_add(GTK_CONTAINER(w), table);
3340 /* In GTK < 2.4, even that isn't available */
3344 gtk_box_pack_start(GTK_BOX(gtk_dialog_get_content_area
3345 (GTK_DIALOG(fs->u.window))),
3348 label = gtk_label_new_with_mnemonic("_Font:");
3349 gtk_widget_show(label);
3350 align_label_left(GTK_LABEL(label));
3351 #if GTK_CHECK_VERSION(3,0,0)
3352 gtk_grid_attach(GTK_GRID(table), label, 0, 0, 1, 1);
3353 g_object_set(G_OBJECT(label), "hexpand", TRUE, (const char *)NULL);
3355 gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
3359 * The Font list box displays only a string, but additionally
3360 * stores two integers which give the limits within the
3361 * tree234 of the font entries covered by this list entry.
3363 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
3364 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
3365 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
3366 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
3368 column = gtk_tree_view_column_new_with_attributes
3369 ("Font", gtk_cell_renderer_text_new(),
3370 "text", 0, (char *)NULL);
3371 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
3372 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
3373 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
3374 "changed", G_CALLBACK(family_changed), fs);
3375 g_signal_connect(G_OBJECT(w), "row-activated",
3376 G_CALLBACK(alias_resolve), fs);
3378 scroll = gtk_scrolled_window_new(NULL, NULL);
3379 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
3381 gtk_container_add(GTK_CONTAINER(scroll), w);
3382 gtk_widget_show(scroll);
3383 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
3384 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
3385 gtk_widget_set_size_request(scroll, font_width, lists_height);
3386 #if GTK_CHECK_VERSION(3,0,0)
3387 gtk_grid_attach(GTK_GRID(table), scroll, 0, 1, 1, 2);
3388 g_object_set(G_OBJECT(scroll), "expand", TRUE, (const char *)NULL);
3390 gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
3391 GTK_EXPAND | GTK_FILL, 0, 0);
3393 fs->family_model = model;
3394 fs->family_list = w;
3396 label = gtk_label_new_with_mnemonic("_Style:");
3397 gtk_widget_show(label);
3398 align_label_left(GTK_LABEL(label));
3399 #if GTK_CHECK_VERSION(3,0,0)
3400 gtk_grid_attach(GTK_GRID(table), label, 1, 0, 1, 1);
3401 g_object_set(G_OBJECT(label), "hexpand", TRUE, (const char *)NULL);
3403 gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
3407 * The Style list box can contain insensitive elements (character
3408 * set headings for server-side fonts), so we add an extra column
3409 * to the list store to hold that information. Also, since GTK3 at
3410 * least doesn't seem to display insensitive elements differently
3411 * by default, we add a further column to change their style.
3413 model = gtk_list_store_new(5, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
3414 G_TYPE_BOOLEAN, G_TYPE_INT);
3415 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
3416 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
3417 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
3419 column = gtk_tree_view_column_new_with_attributes
3420 ("Style", gtk_cell_renderer_text_new(),
3421 "text", 0, "sensitive", 3, "weight", 4, (char *)NULL);
3422 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
3423 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
3424 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
3425 "changed", G_CALLBACK(style_changed), fs);
3427 scroll = gtk_scrolled_window_new(NULL, NULL);
3428 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
3430 gtk_container_add(GTK_CONTAINER(scroll), w);
3431 gtk_widget_show(scroll);
3432 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
3433 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
3434 gtk_widget_set_size_request(scroll, style_width, lists_height);
3435 #if GTK_CHECK_VERSION(3,0,0)
3436 gtk_grid_attach(GTK_GRID(table), scroll, 1, 1, 1, 2);
3437 g_object_set(G_OBJECT(scroll), "expand", TRUE, (const char *)NULL);
3439 gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
3440 GTK_EXPAND | GTK_FILL, 0, 0);
3442 fs->style_model = model;
3445 label = gtk_label_new_with_mnemonic("Si_ze:");
3446 gtk_widget_show(label);
3447 align_label_left(GTK_LABEL(label));
3448 #if GTK_CHECK_VERSION(3,0,0)
3449 gtk_grid_attach(GTK_GRID(table), label, 2, 0, 1, 1);
3450 g_object_set(G_OBJECT(label), "hexpand", TRUE, (const char *)NULL);
3452 gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
3456 * The Size label attaches primarily to a text input box so
3457 * that the user can select a size of their choice. The list
3458 * of available sizes is secondary.
3460 fs->size_entry = w = gtk_entry_new();
3461 gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
3462 gtk_widget_set_size_request(w, size_width, -1);
3464 #if GTK_CHECK_VERSION(3,0,0)
3465 gtk_grid_attach(GTK_GRID(table), w, 2, 1, 1, 1);
3466 g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
3468 gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
3470 g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
3473 model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
3474 w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
3475 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
3477 column = gtk_tree_view_column_new_with_attributes
3478 ("Size", gtk_cell_renderer_text_new(),
3479 "text", 0, (char *)NULL);
3480 gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
3481 gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
3482 g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
3483 "changed", G_CALLBACK(size_changed), fs);
3485 scroll = gtk_scrolled_window_new(NULL, NULL);
3486 gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
3488 gtk_container_add(GTK_CONTAINER(scroll), w);
3489 gtk_widget_show(scroll);
3490 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
3491 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
3492 #if GTK_CHECK_VERSION(3,0,0)
3493 gtk_grid_attach(GTK_GRID(table), scroll, 2, 2, 1, 1);
3494 g_object_set(G_OBJECT(scroll), "expand", TRUE, (const char *)NULL);
3496 gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
3497 GTK_EXPAND | GTK_FILL, 0, 0);
3499 fs->size_model = model;
3505 fs->preview_area = gtk_drawing_area_new();
3506 #ifndef NO_BACKING_PIXMAPS
3507 fs->preview_pixmap = NULL;
3509 fs->preview_width = 0;
3510 fs->preview_height = 0;
3511 fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
3512 fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
3513 fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
3514 #if !GTK_CHECK_VERSION(3,0,0)
3515 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
3517 gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
3520 #if GTK_CHECK_VERSION(3,0,0)
3521 g_signal_connect(G_OBJECT(fs->preview_area), "draw",
3522 G_CALLBACK(unifontsel_draw_area), fs);
3524 g_signal_connect(G_OBJECT(fs->preview_area), "expose_event",
3525 G_CALLBACK(unifontsel_expose_area), fs);
3527 g_signal_connect(G_OBJECT(fs->preview_area), "configure_event",
3528 G_CALLBACK(unifontsel_configure_area), fs);
3529 gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
3530 gtk_widget_show(fs->preview_area);
3531 ww = fs->preview_area;
3532 w = gtk_frame_new(NULL);
3533 gtk_container_add(GTK_CONTAINER(w), ww);
3536 #if GTK_CHECK_VERSION(3,0,0)
3537 /* GtkAlignment has become deprecated and we use the "margin"
3539 g_object_set(G_OBJECT(w), "margin", 8, (const char *)NULL);
3540 #elif GTK_CHECK_VERSION(2,4,0)
3542 /* GtkAlignment seems to be the simplest way to put padding round things */
3543 w = gtk_alignment_new(0, 0, 1, 1);
3544 gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
3545 gtk_container_add(GTK_CONTAINER(w), ww);
3550 w = gtk_frame_new("Preview of font");
3551 gtk_container_add(GTK_CONTAINER(w), ww);
3553 #if GTK_CHECK_VERSION(3,0,0)
3554 gtk_grid_attach(GTK_GRID(table), w, 0, 3, 3, 1);
3555 g_object_set(G_OBJECT(w), "expand", TRUE, (const char *)NULL);
3557 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
3558 GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
3562 * We only provide the checkboxes for client- and server-side
3563 * fonts if we have the X11 back end available, because that's the
3564 * only situation in which more than one class of font is
3567 fs->n_filter_buttons = 0;
3568 #ifndef NOT_X_WINDOWS
3569 w = gtk_check_button_new_with_label("Show client-side fonts");
3570 g_object_set_data(G_OBJECT(w), "user-data",
3571 GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
3572 g_signal_connect(G_OBJECT(w), "toggled",
3573 G_CALLBACK(unifontsel_button_toggled), fs);
3575 fs->filter_buttons[fs->n_filter_buttons++] = w;
3576 #if GTK_CHECK_VERSION(3,0,0)
3577 gtk_grid_attach(GTK_GRID(table), w, 0, 4, 3, 1);
3578 g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
3580 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
3582 w = gtk_check_button_new_with_label("Show server-side fonts");
3583 g_object_set_data(G_OBJECT(w), "user-data",
3584 GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
3585 g_signal_connect(G_OBJECT(w), "toggled",
3586 G_CALLBACK(unifontsel_button_toggled), fs);
3588 fs->filter_buttons[fs->n_filter_buttons++] = w;
3589 #if GTK_CHECK_VERSION(3,0,0)
3590 gtk_grid_attach(GTK_GRID(table), w, 0, 5, 3, 1);
3591 g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
3593 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
3595 w = gtk_check_button_new_with_label("Show server-side font aliases");
3596 g_object_set_data(G_OBJECT(w), "user-data",
3597 GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
3598 g_signal_connect(G_OBJECT(w), "toggled",
3599 G_CALLBACK(unifontsel_button_toggled), fs);
3601 fs->filter_buttons[fs->n_filter_buttons++] = w;
3602 #if GTK_CHECK_VERSION(3,0,0)
3603 gtk_grid_attach(GTK_GRID(table), w, 0, 6, 3, 1);
3604 g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
3606 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
3608 #endif /* NOT_X_WINDOWS */
3609 w = gtk_check_button_new_with_label("Show non-monospaced fonts");
3610 g_object_set_data(G_OBJECT(w), "user-data",
3611 GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
3612 g_signal_connect(G_OBJECT(w), "toggled",
3613 G_CALLBACK(unifontsel_button_toggled), fs);
3615 fs->filter_buttons[fs->n_filter_buttons++] = w;
3616 #if GTK_CHECK_VERSION(3,0,0)
3617 gtk_grid_attach(GTK_GRID(table), w, 0, 7, 3, 1);
3618 g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
3620 gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
3623 assert(fs->n_filter_buttons <= lenof(fs->filter_buttons));
3624 fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
3625 FONTFLAG_SERVERALIAS;
3626 unifontsel_set_filter_buttons(fs);
3629 * Go and find all the font names, and set up our master font
3632 fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
3633 fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
3634 for (i = 0; i < lenof(unifont_types); i++)
3635 unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
3636 unifontsel_add_entry, fs);
3639 * And set up the initial font names list.
3641 unifontsel_setup_familylist(fs);
3643 fs->selsize = fs->intendedsize = 13; /* random default */
3644 gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
3646 return (unifontsel *)fs;
3649 void unifontsel_destroy(unifontsel *fontsel)
3651 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
3654 #ifndef NO_BACKING_PIXMAPS
3655 if (fs->preview_pixmap)
3656 gdk_pixmap_unref(fs->preview_pixmap);
3659 freetree234(fs->fonts_by_selorder);
3660 while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
3662 freetree234(fs->fonts_by_realname);
3664 gtk_widget_destroy(GTK_WIDGET(fs->u.window));
3668 void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
3670 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
3671 int i, start, end, size, flags;
3672 const char *fontname2 = NULL;
3676 * Provide a default if given an empty or null font name.
3678 if (!fontname || !*fontname)
3679 fontname = DEFAULT_GTK_FONT;
3682 * Call the canonify_fontname function.
3684 fontname = unifont_do_prefix(fontname, &start, &end);
3685 for (i = start; i < end; i++) {
3686 fontname2 = unifont_types[i]->canonify_fontname
3687 (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
3692 return; /* font name not recognised */
3695 * Now look up the canonified font name in our index.
3698 struct fontinfo_realname_find f;
3699 f.realname = fontname2;
3701 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
3705 * If we've found the font, and its size field is either
3706 * correct or zero (the latter indicating a scalable font),
3707 * then we're done. Otherwise, try looking up the original
3708 * font name instead.
3710 if (!info || (info->size != size && info->size != 0)) {
3711 struct fontinfo_realname_find f;
3712 f.realname = fontname;
3715 info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
3716 if (!info || info->size != size)
3717 return; /* font name not in our index */
3721 * Now we've got a fontinfo structure and a font size, so we
3722 * know everything we need to fill in all the fields in the
3725 unifontsel_select_font(fs, info, size, 0, TRUE);
3728 char *unifontsel_get_name(unifontsel *fontsel)
3730 unifontsel_internal *fs = (unifontsel_internal *)fontsel;
3736 if (fs->selected->size == 0) {
3737 name = fs->selected->fontclass->scale_fontname
3738 (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
3740 char *ret = dupcat(fs->selected->fontclass->prefix, ":",
3747 return dupcat(fs->selected->fontclass->prefix, ":",
3748 fs->selected->realname, NULL);
3751 #endif /* GTK_CHECK_VERSION(2,0,0) */