2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
6 National Institute of Advanced Industrial Science and Technology (AIST)
7 Registration Number H14PRO021
8 Copyright (C) 2003, 2006
9 National Institute of Advanced Industrial Science and Technology (AIST)
10 Registration Number H13PRO009
12 This file is part of GNU Emacs.
14 GNU Emacs is free software: you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation, either version 3 of the License, or
17 (at your option) any later version.
19 GNU Emacs is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 /* #define FONTSET_DEBUG */
33 #include "blockinput.h"
35 #include "character.h"
40 #include "dispextern.h"
41 #include "intervals.h"
53 #include "termhooks.h"
59 #define xassert(X) do {if (!(X)) abort ();} while (0)
62 #else /* not FONTSET_DEBUG */
63 #define xassert(X) (void) 0
64 #endif /* not FONTSET_DEBUG */
66 EXFUN (Fclear_face_cache
, 1);
70 A fontset is a collection of font related information to give
71 similar appearance (style, etc) of characters. A fontset has two
72 roles. One is to use for the frame parameter `font' as if it is an
73 ASCII font. In that case, Emacs uses the font specified for
74 `ascii' script for the frame's default font.
76 Another role, the more important one, is to provide information
77 about which font to use for each non-ASCII character.
79 There are two kinds of fontsets; base and realized. A base fontset
80 is created by `new-fontset' from Emacs Lisp explicitly. A realized
81 fontset is created implicitly when a face is realized for ASCII
82 characters. A face is also realized for non-ASCII characters based
83 on an ASCII face. All of non-ASCII faces based on the same ASCII
84 face share the same realized fontset.
86 A fontset object is implemented by a char-table whose default value
87 and parent are always nil.
89 An element of a base fontset is a vector of FONT-DEFs which itself
90 is a vector [ FONT-SPEC ENCODING REPERTORY ].
92 An element of a realized fontset is nil, t, or a vector of this form:
94 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
95 RFONT-DEF0 RFONT-DEF1 ... ]
97 RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
99 [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
101 RFONT-DEFn are automatically reordered by the current charset
104 The value nil means that we have not yet generated the above vector
105 from the base of the fontset.
107 The value t means that no font is available for the corresponding
111 A fontset has 9 extra slots.
113 The 1st slot: the ID number of the fontset
116 base: the name of the fontset
121 realized: the base fontset
125 realized: the frame that the fontset belongs to
128 base: the font name for ASCII characters
133 realized: the ID number of a face to use for characters that
134 has no font in a realized fontset.
138 realized: Alist of font index vs the corresponding repertory
143 realized: If the base is not the default fontset, a fontset
144 realized from the default fontset, else nil.
147 base: Same as element value (but for fallback fonts).
150 All fontsets are recorded in the vector Vfontset_table.
155 There's a special base fontset named `default fontset' which
156 defines the default font specifications. When a base fontset
157 doesn't specify a font for a specific character, the corresponding
158 value in the default fontset is used.
160 The parent of a realized fontset created for such a face that has
161 no fontset is the default fontset.
164 These structures are hidden from the other codes than this file.
165 The other codes handle fontsets only by their ID numbers. They
166 usually use the variable name `fontset' for IDs. But, in this
167 file, we always use varialbe name `id' for IDs, and name `fontset'
168 for an actual fontset object, i.e., char-table.
172 /********** VARIABLES and FUNCTION PROTOTYPES **********/
174 extern Lisp_Object Qfont
;
175 static Lisp_Object Qfontset
;
176 static Lisp_Object Qfontset_info
;
177 static Lisp_Object Qprepend
, Qappend
;
178 static Lisp_Object Qlatin
;
180 /* Vector containing all fontsets. */
181 static Lisp_Object Vfontset_table
;
183 /* Next possibly free fontset ID. Usually this keeps the minimum
184 fontset ID not yet used. */
185 static int next_fontset_id
;
187 /* The default fontset. This gives default FAMILY and REGISTRY of
188 font for each character. */
189 static Lisp_Object Vdefault_fontset
;
191 Lisp_Object Vfont_encoding_charset_alist
;
192 Lisp_Object Vuse_default_ascent
;
193 Lisp_Object Vignore_relative_composition
;
194 Lisp_Object Valternate_fontname_alist
;
195 Lisp_Object Vfontset_alias_alist
;
196 Lisp_Object Vvertical_centering_font_regexp
;
197 Lisp_Object Votf_script_alist
;
199 /* Check if any window system is used now. */
200 void (*check_window_system_func
) P_ ((void));
203 /* Prototype declarations for static functions. */
204 static Lisp_Object fontset_add
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
206 static Lisp_Object fontset_find_font
P_ ((Lisp_Object
, int, struct face
*,
208 static void reorder_font_vector
P_ ((Lisp_Object
, struct font
*));
209 static Lisp_Object fontset_font
P_ ((Lisp_Object
, int, struct face
*, int));
210 static Lisp_Object make_fontset
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
211 static Lisp_Object fontset_pattern_regexp
P_ ((Lisp_Object
));
212 static void accumulate_script_ranges
P_ ((Lisp_Object
, Lisp_Object
,
214 Lisp_Object find_font_encoding
P_ ((Lisp_Object
));
216 static void set_fontset_font
P_ ((Lisp_Object
, Lisp_Object
));
220 /* Return 1 if ID is a valid fontset id, else return 0. */
223 fontset_id_valid_p (id
)
226 return (id
>= 0 && id
< ASIZE (Vfontset_table
) - 1);
233 /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
235 /* Return the fontset with ID. No check of ID's validness. */
236 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
238 /* Macros to access special values of FONTSET. */
239 #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
241 /* Macros to access special values of (base) FONTSET. */
242 #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
243 #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
244 #define FONTSET_SPEC(fontset) XCHAR_TABLE (fontset)->extras[5]
246 /* Macros to access special values of (realized) FONTSET. */
247 #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
248 #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
249 #define FONTSET_OBJLIST(fontset) XCHAR_TABLE (fontset)->extras[4]
250 #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
251 #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6]
252 #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
254 /* For both base and realized fontset. */
255 #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
257 #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
260 /* Macros for FONT-DEF and RFONT-DEF of fontset. */
261 #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \
263 (font_def) = Fmake_vector (make_number (3), (font_spec)); \
264 ASET ((font_def), 1, encoding); \
265 ASET ((font_def), 2, repertory); \
268 #define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
269 #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
270 #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
272 #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
273 #define RFONT_DEF_SET_FACE(rfont_def, face_id) \
274 ASET ((rfont_def), 0, make_number (face_id))
275 #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
276 #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1))
277 #define RFONT_DEF_REPERTORY(rfont_def) FONT_DEF_REPERTORY (AREF (rfont_def, 1))
278 #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2)
279 #define RFONT_DEF_SET_OBJECT(rfont_def, object) \
280 ASET ((rfont_def), 2, (object))
281 #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
282 #define RFONT_DEF_SET_SCORE(rfont_def, score) \
283 ASET ((rfont_def), 3, make_number (score))
284 #define RFONT_DEF_NEW(rfont_def, font_def) \
286 (rfont_def) = Fmake_vector (make_number (4), Qnil); \
287 ASET ((rfont_def), 1, (font_def)); \
288 RFONT_DEF_SET_SCORE ((rfont_def), 0); \
292 /* Return the element of FONTSET for the character C. If FONTSET is a
293 base fontset other then the default fontset and FONTSET doesn't
294 contain information for C, return the information in the default
297 #define FONTSET_REF(fontset, c) \
298 (EQ (fontset, Vdefault_fontset) \
299 ? CHAR_TABLE_REF (fontset, c) \
300 : fontset_ref ((fontset), (c)))
303 fontset_ref (fontset
, c
)
309 elt
= CHAR_TABLE_REF (fontset
, c
);
310 if (NILP (elt
) && ! EQ (fontset
, Vdefault_fontset
)
311 /* Don't check Vdefault_fontset for a realized fontset. */
312 && NILP (FONTSET_BASE (fontset
)))
313 elt
= CHAR_TABLE_REF (Vdefault_fontset
, c
);
317 /* Set elements of FONTSET for characters in RANGE to the value ELT.
318 RANGE is a cons (FROM . TO), where FROM and TO are character codes
319 specifying a range. */
321 #define FONTSET_SET(fontset, range, elt) \
322 Fset_char_table_range ((fontset), (range), (elt))
325 /* Modify the elements of FONTSET for characters in RANGE by replacing
326 with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
327 and TO are character codes specifying a range. If ADD is nil,
328 replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
331 #define FONTSET_ADD(fontset, range, elt, add) \
334 ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
335 : Fset_char_table_range ((fontset), (range), \
336 Fmake_vector (make_number (1), (elt)))) \
337 : fontset_add ((fontset), (range), (elt), (add)))
340 fontset_add (fontset
, range
, elt
, add
)
341 Lisp_Object fontset
, range
, elt
, add
;
344 int idx
= (EQ (add
, Qappend
) ? 0 : 1);
346 args
[1 - idx
] = Fmake_vector (make_number (1), elt
);
350 int from
= XINT (XCAR (range
));
351 int to
= XINT (XCDR (range
));
355 args
[idx
] = char_table_ref_and_range (fontset
, from
, &from1
, &to1
);
358 char_table_set_range (fontset
, from
, to1
,
359 NILP (args
[idx
]) ? args
[1 - idx
]
360 : Fvconcat (2, args
));
366 args
[idx
] = FONTSET_FALLBACK (fontset
);
367 FONTSET_FALLBACK (fontset
)
368 = NILP (args
[idx
]) ? args
[1 - idx
] : Fvconcat (2, args
);
374 fontset_compare_rfontdef (val1
, val2
)
375 const void *val1
, *val2
;
377 return (RFONT_DEF_SCORE (*(Lisp_Object
*) val1
)
378 - RFONT_DEF_SCORE (*(Lisp_Object
*) val2
));
381 /* Update FONT-GROUP which has this form:
382 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
383 RFONT-DEF0 RFONT-DEF1 ... ]
384 Reorder RFONT-DEFs according to the current language, and update
385 CHARSET-ORDERED-LIST-TICK.
387 If PREFERRED_FAMILY is not nil, that family has the higher priority
388 if the encoding charsets or languages in font-specs are the same. */
390 extern Lisp_Object
Fassoc_string ();
393 reorder_font_vector (font_group
, font
)
394 Lisp_Object font_group
;
397 Lisp_Object vec
, font_object
;
400 int score_changed
= 0;
403 XSETFONT (font_object
, font
);
407 vec
= XCDR (font_group
);
409 /* Exclude the tailing nil element from the reordering. */
410 if (NILP (AREF (vec
, size
- 1)))
413 for (i
= 0; i
< size
; i
++)
415 Lisp_Object rfont_def
= AREF (vec
, i
);
416 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
417 Lisp_Object font_spec
= FONT_DEF_SPEC (font_def
);
418 int score
= RFONT_DEF_SCORE (rfont_def
) & 0xFF;
420 if (! font_match_p (font_spec
, font_object
))
422 Lisp_Object repertory
= FONT_DEF_REPERTORY (font_def
);
424 if (! NILP (repertory
))
428 for (tail
= Vcharset_ordered_list
;
429 ! EQ (tail
, Vcharset_non_preferred_head
) && CONSP (tail
);
430 score
+= 0x100, tail
= XCDR (tail
))
431 if (EQ (repertory
, XCAR (tail
)))
436 Lisp_Object lang
= Ffont_get (font_spec
, QClang
);
439 && ! EQ (lang
, Vcurrent_iso639_language
)
440 && (! CONSP (Vcurrent_iso639_language
)
441 || NILP (Fmemq (lang
, Vcurrent_iso639_language
))))
445 if (RFONT_DEF_SCORE (rfont_def
) != score
)
447 RFONT_DEF_SET_SCORE (rfont_def
, score
);
453 qsort (XVECTOR (vec
)->contents
, size
, sizeof (Lisp_Object
),
454 fontset_compare_rfontdef
);
455 XSETCAR (font_group
, make_number (charset_ordered_list_tick
));
459 fontset_get_font_group (Lisp_Object fontset
, int c
)
461 Lisp_Object font_group
;
462 Lisp_Object base_fontset
;
465 xassert (! BASE_FONTSET_P (fontset
));
467 font_group
= CHAR_TABLE_REF (fontset
, c
);
469 font_group
= FONTSET_FALLBACK (fontset
);
470 if (! NILP (font_group
))
472 base_fontset
= FONTSET_BASE (fontset
);
474 font_group
= char_table_ref_and_range (base_fontset
, c
, &from
, &to
);
476 font_group
= FONTSET_FALLBACK (base_fontset
);
477 if (NILP (font_group
))
479 font_group
= Fcopy_sequence (font_group
);
480 for (i
= 0; i
< ASIZE (font_group
); i
++)
481 if (! NILP (AREF (font_group
, i
)))
483 Lisp_Object rfont_def
;
485 RFONT_DEF_NEW (rfont_def
, AREF (font_group
, i
));
486 /* Remember the original order. */
487 RFONT_DEF_SET_SCORE (rfont_def
, i
);
488 ASET (font_group
, i
, rfont_def
);
490 font_group
= Fcons (make_number (-1), font_group
);
492 char_table_set_range (fontset
, from
, to
, font_group
);
494 FONTSET_FALLBACK (fontset
) = font_group
;
498 /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
499 character C. If no font is found, return Qnil if there's a
500 possibility that the default fontset or the fallback font groups
501 have a proper font, and return Qt if not.
503 If a font is found but is not yet opened, open it (if FACE is not
504 NULL) or return Qnil (if FACE is NULL).
506 ID is a charset-id that must be preferred, or -1 meaning no
509 If FALLBACK is nonzero, search only fallback fonts. */
512 fontset_find_font (fontset
, c
, face
, id
, fallback
)
518 Lisp_Object elt
, vec
, font_group
;
520 FRAME_PTR f
= XFRAME (FONTSET_FRAME (fontset
));
521 int charset_matched
= -1;
523 font_group
= fontset_get_font_group (fontset
, fallback
? -1 : c
);
524 if (! CONSP (font_group
))
526 vec
= XCDR (font_group
);
527 if (ASIZE (vec
) == 0)
532 if (XINT (XCAR (font_group
)) != charset_ordered_list_tick
)
533 /* We have just created the font-group,
534 or the charset priorities were changed. */
535 reorder_font_vector (font_group
, face
->ascii_face
->font
);
537 /* Find a spec matching with the charset ID to try at
539 for (i
= 0; i
< ASIZE (vec
); i
++)
541 Lisp_Object rfont_def
= AREF (vec
, i
);
542 Lisp_Object repertory
543 = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def
));
545 if (XINT (repertory
) == id
)
553 /* Find the first available font in the vector of RFONT-DEF. */
554 for (i
= 0; i
< ASIZE (vec
); i
++)
556 Lisp_Object font_entity
, font_object
;
558 if (i
== 0 && charset_matched
>= 0)
560 /* Try the element matching with the charset ID at first. */
561 elt
= AREF (vec
, charset_matched
);
562 charset_matched
= -1;
565 else if (i
!= charset_matched
)
571 /* This is a sign of not to try the other fonts. */
573 if (INTEGERP (RFONT_DEF_FACE (elt
))
574 && XINT (AREF (elt
, 1)) < 0)
575 /* We couldn't open this font last time. */
578 font_object
= RFONT_DEF_OBJECT (elt
);
579 if (NILP (font_object
))
581 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (elt
);
584 /* We have not yet opened the font. */
586 font_entity
= font_find_for_lface (f
, face
->lface
,
587 FONT_DEF_SPEC (font_def
), -1);
588 if (NILP (font_entity
))
590 /* Record that no font matches the spec. */
591 RFONT_DEF_SET_FACE (elt
, -1);
594 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
595 FONT_DEF_SPEC (font_def
));
596 if (NILP (font_object
))
598 /* Record that the font is unsable. */
599 RFONT_DEF_SET_FACE (elt
, -1);
602 RFONT_DEF_SET_OBJECT (elt
, font_object
);
605 if (font_has_char (f
, font_object
, c
))
609 /* The following code makes Emacs to find a font for C by fairly
610 exhausitive search. But, that takes long time especially for
613 /* Try to find the different font maching with the current spec
615 font_def
= RFONT_DEF_FONT_DEF (elt
);
616 for (i
++; i
< ASIZE (vec
); i
++)
618 if (! EQ (RFONT_DEF_FONT_DEF (AREF (vec
, i
)), font_def
))
620 if (font_has_char (f
, RFONT_DEF_OBJECT (AREF (vec
, i
)), c
))
621 return AREF (vec
, i
);
623 /* Find an font-entity that support C. */
624 font_entity
= font_find_for_lface (f
, face
->lface
,
625 FONT_DEF_SPEC (font_def
), c
);
626 if (! NILP (font_entity
))
628 Lisp_Object rfont_def
, new_vec
;
631 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
633 RFONT_DEF_NEW (rfont_def
, font_def
);
634 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
635 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (elt
));
636 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
637 for (j
= 0; j
< i
; j
++)
638 ASET (new_vec
, j
, AREF (vec
, j
));
639 ASET (new_vec
, j
, rfont_def
);
640 for (j
++; j
< ASIZE (new_vec
); j
++)
641 ASET (new_vec
, j
, AREF (vec
, j
- 1));
649 FONTSET_SET (fontset
, make_number (c
), make_number (0));
655 fontset_font (fontset
, c
, face
, id
)
661 Lisp_Object rfont_def
;
662 Lisp_Object base_fontset
;
664 /* Try a font-group of FONTSET. */
665 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
666 if (VECTORP (rfont_def
))
668 if (EQ (rfont_def
, Qt
))
671 /* Try a font-group of the default fontset. */
672 base_fontset
= FONTSET_BASE (fontset
);
673 if (! EQ (base_fontset
, Vdefault_fontset
))
675 if (NILP (FONTSET_DEFAULT (fontset
)))
676 FONTSET_DEFAULT (fontset
)
677 = make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
);
678 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
679 if (VECTORP (rfont_def
))
681 if (EQ (rfont_def
, Qt
))
685 /* Try a fallback font-group of FONTSET. */
686 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
687 if (VECTORP (rfont_def
))
689 if (EQ (rfont_def
, Qt
))
692 /* Try a fallback font-group of the default fontset . */
693 if (! EQ (base_fontset
, Vdefault_fontset
))
695 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
696 if (VECTORP (rfont_def
))
700 /* Remeber that we have no font for C. */
701 FONTSET_SET (fontset
, make_number (c
), Qt
);
706 /* Return a newly created fontset with NAME. If BASE is nil, make a
707 base fontset. Otherwise make a realized fontset whose base is
711 make_fontset (frame
, name
, base
)
712 Lisp_Object frame
, name
, base
;
715 int size
= ASIZE (Vfontset_table
);
716 int id
= next_fontset_id
;
718 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
719 the next available fontset ID. So it is expected that this loop
720 terminates quickly. In addition, as the last element of
721 Vfontset_table is always nil, we don't have to check the range of
723 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
726 Vfontset_table
= larger_vector (Vfontset_table
, size
+ 32, Qnil
);
728 fontset
= Fmake_char_table (Qfontset
, Qnil
);
730 FONTSET_ID (fontset
) = make_number (id
);
733 FONTSET_NAME (fontset
) = name
;
737 FONTSET_NAME (fontset
) = Qnil
;
738 FONTSET_FRAME (fontset
) = frame
;
739 FONTSET_BASE (fontset
) = base
;
742 ASET (Vfontset_table
, id
, fontset
);
743 next_fontset_id
= id
+ 1;
748 /* Set the ASCII font of the default fontset to FONTNAME if that is
751 set_default_ascii_font (fontname
)
752 Lisp_Object fontname
;
754 if (! STRINGP (FONTSET_ASCII (Vdefault_fontset
)))
756 int id
= fs_query_fontset (fontname
, 2);
759 fontname
= FONTSET_ASCII (FONTSET_FROM_ID (id
));
760 FONTSET_ASCII (Vdefault_fontset
)= fontname
;
765 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
767 /* Return the name of the fontset who has ID. */
775 fontset
= FONTSET_FROM_ID (id
);
776 return FONTSET_NAME (fontset
);
780 /* Return the ASCII font name of the fontset who has ID. */
786 Lisp_Object fontset
, elt
;
788 fontset
= FONTSET_FROM_ID (id
);
789 elt
= FONTSET_ASCII (fontset
);
796 free_realized_fontset (f
, fontset
)
803 for (tail
= FONTSET_OBJLIST (fontset
); CONSP (tail
); tail
= XCDR (tail
))
805 xassert (FONT_OBJECT_P (XCAR (tail
)));
806 font_close_object (f
, XCAR (tail
));
810 /* Free fontset of FACE defined on frame F. Called from
811 free_realized_face. */
814 free_face_fontset (f
, face
)
820 fontset
= FONTSET_FROM_ID (face
->fontset
);
823 xassert (! BASE_FONTSET_P (fontset
));
824 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
825 free_realized_fontset (f
, fontset
);
826 ASET (Vfontset_table
, face
->fontset
, Qnil
);
827 if (face
->fontset
< next_fontset_id
)
828 next_fontset_id
= face
->fontset
;
829 if (! NILP (FONTSET_DEFAULT (fontset
)))
831 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
833 fontset
= AREF (Vfontset_table
, id
);
834 xassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
835 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
836 free_realized_fontset (f
, fontset
);
837 ASET (Vfontset_table
, id
, Qnil
);
838 if (id
< next_fontset_id
)
839 next_fontset_id
= face
->fontset
;
845 /* Return 1 if FACE is suitable for displaying character C.
846 Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
847 when C is not an ASCII character. */
850 face_suitable_for_char_p (face
, c
)
854 Lisp_Object fontset
, rfont_def
;
856 fontset
= FONTSET_FROM_ID (face
->fontset
);
857 rfont_def
= fontset_font (fontset
, c
, NULL
, -1);
858 return (VECTORP (rfont_def
)
859 && INTEGERP (RFONT_DEF_FACE (rfont_def
))
860 && face
->id
== XINT (RFONT_DEF_FACE (rfont_def
)));
864 /* Return ID of face suitable for displaying character C on frame F.
865 FACE must be reazlied for ASCII characters in advance. Called from
866 the macro FACE_FOR_CHAR. */
869 face_for_char (f
, face
, c
, pos
, object
)
875 Lisp_Object fontset
, rfont_def
;
879 if (ASCII_CHAR_P (c
))
880 return face
->ascii_face
->id
;
882 xassert (fontset_id_valid_p (face
->fontset
));
883 fontset
= FONTSET_FROM_ID (face
->fontset
);
884 xassert (!BASE_FONTSET_P (fontset
));
892 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
895 else if (CHARSETP (charset
))
899 val
= assoc_no_quit (charset
, Vfont_encoding_charset_alist
);
900 if (CONSP (val
) && CHARSETP (XCDR (val
)))
901 charset
= XCDR (val
);
902 id
= XINT (CHARSET_SYMBOL_ID (charset
));
906 rfont_def
= fontset_font (fontset
, c
, face
, id
);
907 if (VECTORP (rfont_def
))
909 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
910 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
913 Lisp_Object font_object
;
915 font_object
= RFONT_DEF_OBJECT (rfont_def
);
916 face_id
= face_for_font (f
, font_object
, face
);
917 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
922 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
923 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
926 face_id
= face_for_font (f
, Qnil
, face
);
927 FONTSET_NOFONT_FACE (fontset
) = make_number (face_id
);
930 xassert (face_id
>= 0);
935 /* Make a realized fontset for ASCII face FACE on frame F from the
936 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
937 default fontset as the base. Value is the id of the new fontset.
938 Called from realize_x_face. */
941 make_fontset_for_ascii_face (f
, base_fontset_id
, face
)
946 Lisp_Object base_fontset
, fontset
, frame
;
948 XSETFRAME (frame
, f
);
949 if (base_fontset_id
>= 0)
951 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
952 if (!BASE_FONTSET_P (base_fontset
))
953 base_fontset
= FONTSET_BASE (base_fontset
);
954 if (! BASE_FONTSET_P (base_fontset
))
958 base_fontset
= Vdefault_fontset
;
960 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
961 return XINT (FONTSET_ID (fontset
));
966 /* Cache data used by fontset_pattern_regexp. The car part is a
967 pattern string containing at least one wild card, the cdr part is
968 the corresponding regular expression. */
969 static Lisp_Object Vcached_fontset_data
;
971 #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data)))
972 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
974 /* If fontset name PATTERN contains any wild card, return regular
975 expression corresponding to PATTERN. */
978 fontset_pattern_regexp (pattern
)
981 if (!index ((char *) SDATA (pattern
), '*')
982 && !index ((char *) SDATA (pattern
), '?'))
983 /* PATTERN does not contain any wild cards. */
986 if (!CONSP (Vcached_fontset_data
)
987 || strcmp ((char *) SDATA (pattern
), CACHED_FONTSET_NAME
))
989 /* We must at first update the cached data. */
990 unsigned char *regex
, *p0
, *p1
;
991 int ndashes
= 0, nstars
= 0, nescs
= 0;
993 for (p0
= SDATA (pattern
); *p0
; p0
++)
1000 || *p0
== '.' || *p0
== '\\'
1001 || *p0
== '+' || *p0
== '^'
1006 /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise
1007 we convert "*" to "[^-]*" which is much faster in regular
1008 expression matching. */
1010 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 2 * nstars
+ 2 * nescs
+ 1);
1012 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 5 * nstars
+ 2 * nescs
+ 1);
1015 for (p0
= SDATA (pattern
); *p0
; p0
++)
1022 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1025 else if (*p0
== '?')
1028 || *p0
== '.' || *p0
== '\\'
1029 || *p0
== '+' || *p0
== '^'
1031 *p1
++ = '\\', *p1
++ = *p0
;
1038 Vcached_fontset_data
= Fcons (build_string ((char *) SDATA (pattern
)),
1039 build_string ((char *) regex
));
1042 return CACHED_FONTSET_REGEX
;
1045 /* Return ID of the base fontset named NAME. If there's no such
1046 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1047 0: pattern containing '*' and '?' as wildcards
1048 1: regular expression
1049 2: literal fontset name
1053 fs_query_fontset (name
, name_pattern
)
1060 name
= Fdowncase (name
);
1061 if (name_pattern
!= 1)
1063 tem
= Frassoc (name
, Vfontset_alias_alist
);
1065 tem
= Fassoc (name
, Vfontset_alias_alist
);
1066 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1068 else if (name_pattern
== 0)
1070 tem
= fontset_pattern_regexp (name
);
1079 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1081 Lisp_Object fontset
, this_name
;
1083 fontset
= FONTSET_FROM_ID (i
);
1085 || !BASE_FONTSET_P (fontset
))
1088 this_name
= FONTSET_NAME (fontset
);
1089 if (name_pattern
== 1
1090 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1091 : !xstrcasecmp (SDATA (name
), SDATA (this_name
)))
1098 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1099 doc
: /* Return the name of a fontset that matches PATTERN.
1100 The value is nil if there is no matching fontset.
1101 PATTERN can contain `*' or `?' as a wildcard
1102 just as X font name matching algorithm allows.
1103 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1105 Lisp_Object pattern
, regexpp
;
1107 Lisp_Object fontset
;
1110 (*check_window_system_func
) ();
1112 CHECK_STRING (pattern
);
1114 if (SCHARS (pattern
) == 0)
1117 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1121 fontset
= FONTSET_FROM_ID (id
);
1122 return FONTSET_NAME (fontset
);
1125 /* Return a list of base fontset names matching PATTERN on frame F. */
1128 list_fontsets (f
, pattern
, size
)
1130 Lisp_Object pattern
;
1133 Lisp_Object frame
, regexp
, val
;
1136 XSETFRAME (frame
, f
);
1138 regexp
= fontset_pattern_regexp (pattern
);
1141 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1143 Lisp_Object fontset
, name
;
1145 fontset
= FONTSET_FROM_ID (id
);
1147 || !BASE_FONTSET_P (fontset
)
1148 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1150 name
= FONTSET_NAME (fontset
);
1152 if (STRINGP (regexp
)
1153 ? (fast_string_match (regexp
, name
) < 0)
1154 : strcmp ((char *) SDATA (pattern
), (char *) SDATA (name
)))
1157 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1164 /* Free all realized fontsets whose base fontset is BASE. */
1167 free_realized_fontsets (base
)
1173 /* For the moment, this doesn't work because free_realized_face
1174 doesn't remove FACE from a cache. Until we find a solution, we
1175 suppress this code, and simply use Fclear_face_cache even though
1176 that is not efficient. */
1178 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1180 Lisp_Object
this = AREF (Vfontset_table
, id
);
1182 if (EQ (FONTSET_BASE (this), base
))
1186 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1189 FRAME_PTR f
= XFRAME (FONTSET_FRAME (this));
1190 int face_id
= XINT (XCDR (XCAR (tail
)));
1191 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1193 /* Face THIS itself is also freed by the following call. */
1194 free_realized_face (f
, face
);
1200 /* But, we don't have to call Fclear_face_cache if no fontset has
1201 been realized from BASE. */
1202 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1204 Lisp_Object
this = AREF (Vfontset_table
, id
);
1206 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1208 Fclear_face_cache (Qt
);
1216 /* Check validity of NAME as a fontset name and return the
1217 corresponding fontset. If not valid, signal an error.
1218 If NAME is t, return Vdefault_fontset. */
1221 check_fontset_name (name
)
1227 return Vdefault_fontset
;
1229 CHECK_STRING (name
);
1230 /* First try NAME as literal. */
1231 id
= fs_query_fontset (name
, 2);
1233 /* For backward compatibility, try again NAME as pattern. */
1234 id
= fs_query_fontset (name
, 0);
1236 error ("Fontset `%s' does not exist", SDATA (name
));
1237 return FONTSET_FROM_ID (id
);
1241 accumulate_script_ranges (arg
, range
, val
)
1242 Lisp_Object arg
, range
, val
;
1244 if (EQ (XCAR (arg
), val
))
1247 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1249 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1254 /* Return an ASCII font name generated from fontset name NAME and
1255 font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */
1257 static INLINE Lisp_Object
1258 generate_ascii_font_name (name
, ascii_spec
)
1259 Lisp_Object name
, ascii_spec
;
1261 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1265 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1266 error ("Not an XLFD font name: %s", SDATA (name
));
1267 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1268 if (! NILP (AREF (ascii_spec
, i
)))
1269 ASET (font_spec
, i
, AREF (ascii_spec
, i
));
1270 i
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1272 error ("Not an XLFD font name: %s", SDATA (name
));
1273 return make_unibyte_string (xlfd
, i
);
1276 /* Variables referred in set_fontset_font. They are set before
1277 map_charset_chars is called in Fset_fontset_font. */
1278 static Lisp_Object font_def_arg
, add_arg
;
1279 static int from_arg
, to_arg
;
1281 /* Callback function for map_charset_chars in Fset_fontset_font. In
1282 FONTSET, set font_def_arg in a fashion specified by add_arg for
1283 characters in RANGE while ignoring the range between from_arg and
1287 set_fontset_font (fontset
, range
)
1288 Lisp_Object fontset
, range
;
1290 if (from_arg
< to_arg
)
1292 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1294 if (from
< from_arg
)
1300 range2
= Fcons (make_number (to_arg
), XCDR (range
));
1301 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1305 range
= Fcons (XCAR (range
), make_number (from_arg
));
1307 else if (to
<= to_arg
)
1312 range
= Fcons (make_number (to_arg
), XCDR (range
));
1315 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1318 extern Lisp_Object QCfamily
, QCregistry
;
1320 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1322 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1324 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1325 In that case, use FONT-SPEC for all characters in the range FROM and
1328 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1329 all characters that belong to the script.
1331 TARGET may be a charset. In that case, use FONT-SPEC for all
1332 characters in the charset.
1334 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1335 that no FONT-SPEC is specified.
1337 FONT-SPEC may one of these:
1338 * A font-spec object made by the function `font-spec' (which see).
1339 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1340 REGISTRY is a font registry name. FAMILY may contain foundry
1341 name, and REGISTRY may contain encoding name.
1342 * A font name string.
1343 * nil, which explicitly specifies that there's no font for TARGET.
1345 Optional 4th argument FRAME, if non-nil, is a frame. This argument is
1346 kept for backward compatibility and has no meaning.
1348 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1349 to the font specifications for TARGET previously set. If it is
1350 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1351 appended. By default, FONT-SPEC overrides the previous settings. */)
1352 (name
, target
, font_spec
, frame
, add
)
1353 Lisp_Object name
, target
, font_spec
, frame
, add
;
1355 Lisp_Object fontset
;
1356 Lisp_Object font_def
, registry
, family
;
1357 Lisp_Object range_list
;
1358 struct charset
*charset
= NULL
;
1360 fontset
= check_fontset_name (name
);
1362 /* The arg FRAME is kept for backward compatibility. We only check
1365 CHECK_LIVE_FRAME (frame
);
1367 if (CONSP (font_spec
))
1369 Lisp_Object spec
= Ffont_spec (0, NULL
);
1371 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1374 else if (STRINGP (font_spec
))
1376 Lisp_Object args
[2];
1377 extern Lisp_Object QCname
;
1380 args
[1] = font_spec
;
1381 font_spec
= Ffont_spec (2, args
);
1383 else if (! NILP (font_spec
) && ! FONT_SPEC_P (font_spec
))
1384 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1386 if (! NILP (font_spec
))
1388 Lisp_Object encoding
, repertory
;
1390 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1391 if (! NILP (family
) )
1392 family
= SYMBOL_NAME (family
);
1393 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1394 if (! NILP (registry
))
1395 registry
= Fdowncase (SYMBOL_NAME (registry
));
1396 encoding
= find_font_encoding (concat3 (family
, build_string ("-"),
1398 if (NILP (encoding
))
1401 if (SYMBOLP (encoding
))
1403 CHECK_CHARSET (encoding
);
1404 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1408 repertory
= XCDR (encoding
);
1409 encoding
= XCAR (encoding
);
1410 CHECK_CHARSET (encoding
);
1411 encoding
= CHARSET_SYMBOL_ID (encoding
);
1412 if (! NILP (repertory
) && SYMBOLP (repertory
))
1414 CHECK_CHARSET (repertory
);
1415 repertory
= CHARSET_SYMBOL_ID (repertory
);
1418 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1423 if (CHARACTERP (target
))
1424 range_list
= Fcons (Fcons (target
, target
), Qnil
);
1425 else if (CONSP (target
))
1427 Lisp_Object from
, to
;
1429 from
= Fcar (target
);
1431 CHECK_CHARACTER (from
);
1432 CHECK_CHARACTER (to
);
1433 range_list
= Fcons (target
, Qnil
);
1435 else if (SYMBOLP (target
) && !NILP (target
))
1437 Lisp_Object script_list
;
1441 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1442 if (! NILP (Fmemq (target
, script_list
)))
1444 val
= Fcons (target
, Qnil
);
1445 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1447 range_list
= XCDR (val
);
1448 if (EQ (target
, Qlatin
) && NILP (FONTSET_ASCII (fontset
)))
1450 if (VECTORP (font_spec
))
1451 val
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1455 FONTSET_ASCII (fontset
) = val
;
1458 if (CHARSETP (target
))
1460 if (EQ (target
, Qascii
) && NILP (FONTSET_ASCII (fontset
)))
1462 if (VECTORP (font_spec
))
1463 font_spec
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1465 FONTSET_ASCII (fontset
) = font_spec
;
1466 range_list
= Fcons (Fcons (make_number (0), make_number (127)),
1471 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1474 else if (NILP (range_list
))
1475 error ("Invalid script or charset name: %s",
1476 SDATA (SYMBOL_NAME (target
)));
1478 else if (NILP (target
))
1479 range_list
= Fcons (Qnil
, Qnil
);
1481 error ("Invalid target for setting a font");
1486 font_def_arg
= font_def
;
1488 if (NILP (range_list
))
1489 from_arg
= to_arg
= 0;
1491 from_arg
= XINT (XCAR (XCAR (range_list
))),
1492 to_arg
= XINT (XCDR (XCAR (range_list
)));
1494 map_charset_chars (set_fontset_font
, Qnil
, fontset
, charset
,
1495 CHARSET_MIN_CODE (charset
),
1496 CHARSET_MAX_CODE (charset
));
1498 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1499 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1501 /* Free all realized fontsets whose base is FONTSET. This way, the
1502 specified character(s) are surely redisplayed by a correct
1504 free_realized_fontsets (fontset
);
1510 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1511 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1513 FONTLIST is an alist of scripts vs the corresponding font specification list.
1514 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1515 character of SCRIPT is displayed by a font that matches one of
1518 SCRIPT is a symbol that appears in the first extra slot of the
1519 char-table `char-script-table'.
1521 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1522 `set-fontset-font' for the meaning. */)
1524 Lisp_Object name
, fontlist
;
1526 Lisp_Object fontset
;
1529 CHECK_STRING (name
);
1530 CHECK_LIST (fontlist
);
1532 name
= Fdowncase (name
);
1533 id
= fs_query_fontset (name
, 0);
1536 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1537 Lisp_Object short_name
;
1541 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1542 error ("Fontset name must be in XLFD format");
1543 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1544 if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1545 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1546 error ("Registry field of fontset name must be \"fontset-*\"");
1547 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1548 Vfontset_alias_alist
);
1549 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1550 fontset
= make_fontset (Qnil
, name
, Qnil
);
1551 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1553 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1554 FONTSET_ASCII (fontset
) = make_unibyte_string (xlfd
, len
);
1558 fontset
= FONTSET_FROM_ID (id
);;
1559 free_realized_fontsets (fontset
);
1560 Fset_char_table_range (fontset
, Qt
, Qnil
);
1563 for (; ! NILP (fontlist
); fontlist
= Fcdr (fontlist
))
1565 Lisp_Object elt
, script
;
1567 elt
= Fcar (fontlist
);
1568 script
= Fcar (elt
);
1570 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1571 for (; CONSP (elt
); elt
= XCDR (elt
))
1572 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1574 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1580 /* Alist of automatically created fontsets. Each element is a cons
1581 (FONT-SPEC . FONTSET-ID). */
1582 static Lisp_Object auto_fontset_alist
;
1585 fontset_from_font (font_object
)
1586 Lisp_Object font_object
;
1588 Lisp_Object font_name
= font_get_name (font_object
);
1589 Lisp_Object font_spec
= Fcopy_font_spec (font_object
);
1590 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1594 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1596 return XINT (FONTSET_ID (XCDR (val
)));
1597 if (NILP (auto_fontset_alist
))
1598 alias
= intern ("fontset-startup");
1602 int len
= XINT (Flength (auto_fontset_alist
));
1604 sprintf (temp
, "fontset-auto%d", len
);
1605 alias
= intern (temp
);
1607 fontset_spec
= Fcopy_font_spec (font_spec
);
1608 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1609 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1612 fontset
= make_fontset (Qnil
, name
, Qnil
);
1613 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1614 Vfontset_alias_alist
);
1615 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1616 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1617 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1618 FONTSET_ASCII (fontset
) = font_name
;
1619 font_spec
= Fcopy_font_spec (font_spec
);
1620 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso10646_1
);
1621 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1622 ASET (font_spec
, i
, Qnil
);
1623 Fset_fontset_font (name
, Qlatin
, font_spec
, Qnil
, Qnil
);
1624 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1627 nsfont_make_fontset_for_font(name
, font_object
);
1630 return XINT (FONTSET_ID (fontset
));
1633 /* Return a cons (FONT-OBJECT . GLYPH-CODE).
1634 FONT-OBJECT is the font for the character at POSITION in the current
1635 buffer. This is computed from all the text properties and overlays
1636 that apply to POSITION. POSTION may be nil, in which case,
1637 FONT-SPEC is the font for displaying the character CH with the
1640 GLYPH-CODE is the glyph code in the font to use for the character.
1642 If the 2nd optional arg CH is non-nil, it is a character to check
1643 the font instead of the character at POSITION.
1645 It returns nil in the following cases:
1647 (1) The window system doesn't have a font for the character (thus
1648 it is displayed by an empty box).
1650 (2) The character code is invalid.
1652 (3) If POSITION is not nil, and the current buffer is not displayed
1655 In addition, the returned font name may not take into account of
1656 such redisplay engine hooks as what used in jit-lock-mode if
1657 POSITION is currently not visible. */
1660 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1661 doc
: /* For internal use only. */)
1663 Lisp_Object position
, ch
;
1665 EMACS_INT pos
, pos_byte
, dummy
;
1672 if (NILP (position
))
1674 CHECK_CHARACTER (ch
);
1676 f
= XFRAME (selected_frame
);
1677 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
1683 Lisp_Object window
, charset
;
1686 CHECK_NUMBER_COERCE_MARKER (position
);
1687 pos
= XINT (position
);
1688 if (pos
< BEGV
|| pos
>= ZV
)
1689 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1690 pos_byte
= CHAR_TO_BYTE (pos
);
1692 c
= FETCH_CHAR (pos_byte
);
1698 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1701 w
= XWINDOW (window
);
1702 f
= XFRAME (w
->frame
);
1703 face_id
= face_at_buffer_position (w
, pos
, -1, -1, &dummy
, pos
+ 100, 0);
1704 charset
= Fget_char_property (position
, Qcharset
, Qnil
);
1705 if (CHARSETP (charset
))
1706 cs_id
= XINT (CHARSET_SYMBOL_ID (charset
));
1710 if (! CHAR_VALID_P (c
, 0))
1712 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1713 face
= FACE_FROM_ID (f
, face_id
);
1716 unsigned code
= face
->font
->driver
->encode_char (face
->font
, c
);
1717 Lisp_Object font_object
;
1718 /* Assignment to EMACS_INT stops GCC whining about limited range
1720 EMACS_INT cod
= code
;
1722 if (code
== FONT_INVALID_CODE
)
1724 XSETFONT (font_object
, face
->font
);
1725 if (cod
<= MOST_POSITIVE_FIXNUM
)
1726 return Fcons (font_object
, make_number (code
));
1727 return Fcons (font_object
, Fcons (make_number (code
>> 16),
1728 make_number (code
& 0xFFFF)));
1734 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1735 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1736 The value is a char-table whose elements have this form:
1738 ((FONT-PATTERN OPENED-FONT ...) ...)
1740 FONT-PATTERN is a vector:
1742 [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
1744 or a string of font name pattern.
1746 OPENED-FONT is a name of a font actually opened.
1748 The char-table has one extra slot. The value is a char-table
1749 containing the information about the derived fonts from the default
1750 fontset. The format is the same as above. */)
1752 Lisp_Object fontset
, frame
;
1755 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1756 Lisp_Object val
, elt
;
1759 (*check_window_system_func
) ();
1761 fontset
= check_fontset_name (fontset
);
1764 frame
= selected_frame
;
1765 CHECK_LIVE_FRAME (frame
);
1768 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1769 in the table `realized'. */
1770 realized
[0] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1771 * ASIZE (Vfontset_table
));
1772 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1774 elt
= FONTSET_FROM_ID (i
);
1776 && EQ (FONTSET_BASE (elt
), fontset
)
1777 && EQ (FONTSET_FRAME (elt
), frame
))
1778 realized
[0][j
++] = elt
;
1780 realized
[0][j
] = Qnil
;
1782 realized
[1] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1783 * ASIZE (Vfontset_table
));
1784 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1786 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1788 realized
[1][j
++] = elt
;
1790 realized
[1][j
] = Qnil
;
1792 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1793 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1794 XCHAR_TABLE (tables
[0])->extras
[0] = tables
[1];
1795 fontsets
[0] = fontset
;
1796 fontsets
[1] = Vdefault_fontset
;
1798 /* Accumulate information of the fontset in TABLE. The format of
1799 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1800 for (k
= 0; k
<= 1; k
++)
1802 for (c
= 0; c
<= MAX_CHAR
; )
1806 if (c
<= MAX_5_BYTE_CHAR
)
1808 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1809 if (to
> MAX_5_BYTE_CHAR
)
1810 to
= MAX_5_BYTE_CHAR
;
1814 val
= FONTSET_FALLBACK (fontsets
[k
]);
1821 /* At first, set ALIST to ((FONT-SPEC) ...). */
1822 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1823 if (! NILP (AREF (val
, i
)))
1824 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1826 alist
= Fnreverse (alist
);
1828 /* Then store opened font names to cdr of each elements. */
1829 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1831 if (c
<= MAX_5_BYTE_CHAR
)
1832 val
= FONTSET_REF (realized
[k
][i
], c
);
1834 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1835 if (! VECTORP (val
))
1837 /* VAL: [int ? [FACE-ID FONT-DEF FONT-OBJECT int] ... ] */
1838 for (j
= 2; j
< ASIZE (val
); j
++)
1840 elt
= AREF (val
, j
);
1841 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1843 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1844 Lisp_Object slot
, name
;
1846 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1847 name
= AREF (font_object
, FONT_NAME_INDEX
);
1848 if (NILP (Fmember (name
, XCDR (slot
))))
1849 nconc2 (slot
, Fcons (name
, Qnil
));
1854 /* Store ALIST in TBL for characters C..TO. */
1855 if (c
<= MAX_5_BYTE_CHAR
)
1856 char_table_set_range (tables
[k
], c
, to
, alist
);
1858 XCHAR_TABLE (tables
[k
])->defalt
= alist
;
1860 /* At last, change each elements to font names. */
1861 for (; CONSP (alist
); alist
= XCDR (alist
))
1864 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
1875 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
1876 doc
: /* Return a font name pattern for character CH in fontset NAME.
1877 If NAME is t, find a pattern in the default fontset.
1879 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
1880 family name and REGISTRY is a font registry name. This is actually
1881 the first font name pattern for CH in the fontset or in the default
1884 If the 2nd optional arg ALL is non-nil, return a list of all font name
1887 Lisp_Object name
, ch
, all
;
1890 Lisp_Object fontset
, elt
, list
, repertory
, val
;
1893 fontset
= check_fontset_name (name
);
1895 CHECK_CHARACTER (ch
);
1900 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
1901 i
++, elt
= FONTSET_FALLBACK (fontset
))
1903 for (j
= 0; j
< ASIZE (elt
); j
++)
1905 val
= AREF (elt
, j
);
1906 repertory
= AREF (val
, 1);
1907 if (INTEGERP (repertory
))
1909 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
1911 if (! CHAR_CHARSET_P (c
, charset
))
1914 else if (CHAR_TABLE_P (repertory
))
1916 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
1919 val
= AREF (val
, 0);
1920 val
= Fcons (AREF (val
, 0), AREF (val
, 5));
1923 list
= Fcons (val
, list
);
1925 if (EQ (fontset
, Vdefault_fontset
))
1927 fontset
= Vdefault_fontset
;
1929 return (Fnreverse (list
));
1932 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
1933 doc
: /* Return a list of all defined fontset names. */)
1936 Lisp_Object fontset
, list
;
1940 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1942 fontset
= FONTSET_FROM_ID (i
);
1944 && BASE_FONTSET_P (fontset
))
1945 list
= Fcons (FONTSET_NAME (fontset
), list
);
1952 #ifdef FONTSET_DEBUG
1955 dump_fontset (fontset
)
1956 Lisp_Object fontset
;
1960 vec
= Fmake_vector (make_number (3), Qnil
);
1961 ASET (vec
, 0, FONTSET_ID (fontset
));
1963 if (BASE_FONTSET_P (fontset
))
1965 ASET (vec
, 1, FONTSET_NAME (fontset
));
1971 frame
= FONTSET_FRAME (fontset
);
1974 FRAME_PTR f
= XFRAME (frame
);
1976 if (FRAME_LIVE_P (f
))
1978 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), f
->name
));
1981 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
1983 if (!NILP (FONTSET_DEFAULT (fontset
)))
1984 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
1989 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
1990 doc
: /* Return a brief summary of all fontsets for debug use. */)
1996 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
1997 if (! NILP (AREF (Vfontset_table
, i
)))
1998 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
1999 return (Fnreverse (val
));
2001 #endif /* FONTSET_DEBUG */
2006 DEFSYM (Qfontset
, "fontset");
2007 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (9));
2008 DEFSYM (Qfontset_info
, "fontset-info");
2009 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2011 DEFSYM (Qprepend
, "prepend");
2012 DEFSYM (Qappend
, "append");
2013 DEFSYM (Qlatin
, "latin");
2015 Vcached_fontset_data
= Qnil
;
2016 staticpro (&Vcached_fontset_data
);
2018 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2019 staticpro (&Vfontset_table
);
2021 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2022 staticpro (&Vdefault_fontset
);
2023 FONTSET_ID (Vdefault_fontset
) = make_number (0);
2024 FONTSET_NAME (Vdefault_fontset
)
2025 = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
2026 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2027 next_fontset_id
= 1;
2029 auto_fontset_alist
= Qnil
;
2030 staticpro (&auto_fontset_alist
);
2032 DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist
,
2034 Alist of charsets vs the charsets to determine the preferred font encoding.
2035 Each element looks like (CHARSET . ENCODING-CHARSET),
2036 where ENCODING-CHARSET is a charset registered in the variable
2037 `font-encoding-alist' as ENCODING.
2039 When a text has a property `charset' and the value is CHARSET, a font
2040 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2041 Vfont_encoding_charset_alist
= Qnil
;
2043 DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent
,
2045 Char table of characters whose ascent values should be ignored.
2046 If an entry for a character is non-nil, the ascent value of the glyph
2047 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2049 This affects how a composite character which contains
2050 such a character is displayed on screen. */);
2051 Vuse_default_ascent
= Qnil
;
2053 DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition
,
2055 Char table of characters which are not composed relatively.
2056 If an entry for a character is non-nil, a composition sequence
2057 which contains that character is displayed so that
2058 the glyph of that character is put without considering
2059 an ascent and descent value of a previous character. */);
2060 Vignore_relative_composition
= Qnil
;
2062 DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist
,
2063 doc
: /* Alist of fontname vs list of the alternate fontnames.
2064 When a specified font name is not found, the corresponding
2065 alternate fontnames (if any) are tried instead. */);
2066 Valternate_fontname_alist
= Qnil
;
2068 DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist
,
2069 doc
: /* Alist of fontset names vs the aliases. */);
2070 Vfontset_alias_alist
= Fcons (Fcons (FONTSET_NAME (Vdefault_fontset
),
2071 build_string ("fontset-default")),
2074 DEFVAR_LISP ("vertical-centering-font-regexp",
2075 &Vvertical_centering_font_regexp
,
2076 doc
: /* *Regexp matching font names that require vertical centering on display.
2077 When a character is displayed with such fonts, the character is displayed
2078 at the vertical center of lines. */);
2079 Vvertical_centering_font_regexp
= Qnil
;
2081 DEFVAR_LISP ("otf-script-alist", &Votf_script_alist
,
2082 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2083 Votf_script_alist
= Qnil
;
2085 defsubr (&Squery_fontset
);
2086 defsubr (&Snew_fontset
);
2087 defsubr (&Sset_fontset_font
);
2088 defsubr (&Sinternal_char_font
);
2089 defsubr (&Sfontset_info
);
2090 defsubr (&Sfontset_font
);
2091 defsubr (&Sfontset_list
);
2092 #ifdef FONTSET_DEBUG
2093 defsubr (&Sfontset_list_all
);
2097 /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537
2098 (do not change this comment) */