2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5 2005, 2006, 2007, 2008, 2009
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, 0, or a vector of this
95 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
96 RFONT-DEF0 RFONT-DEF1 ... ]
98 RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
100 [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
102 RFONT-DEFn are automatically reordered by the current charset
105 The value nil means that we have not yet generated the above vector
106 from the base of the fontset.
108 The value t means that no font is available for the corresponding
111 The value 0 means that no font is available for the corresponding
112 range of characters in this fontset, but may be available in the
116 A fontset has 9 extra slots.
118 The 1st slot: the ID number of the fontset
121 base: the name of the fontset
126 realized: the base fontset
130 realized: the frame that the fontset belongs to
133 base: the font name for ASCII characters
138 realized: the ID number of a face to use for characters that
139 has no font in a realized fontset.
143 realized: Alist of font index vs the corresponding repertory
148 realized: If the base is not the default fontset, a fontset
149 realized from the default fontset, else nil.
152 base: Same as element value (but for fallback fonts).
155 All fontsets are recorded in the vector Vfontset_table.
160 There's a special base fontset named `default fontset' which
161 defines the default font specifications. When a base fontset
162 doesn't specify a font for a specific character, the corresponding
163 value in the default fontset is used.
165 The parent of a realized fontset created for such a face that has
166 no fontset is the default fontset.
169 These structures are hidden from the other codes than this file.
170 The other codes handle fontsets only by their ID numbers. They
171 usually use the variable name `fontset' for IDs. But, in this
172 file, we always use varialbe name `id' for IDs, and name `fontset'
173 for an actual fontset object, i.e., char-table.
177 /********** VARIABLES and FUNCTION PROTOTYPES **********/
179 extern Lisp_Object Qfont
;
180 static Lisp_Object Qfontset
;
181 static Lisp_Object Qfontset_info
;
182 static Lisp_Object Qprepend
, Qappend
;
183 static Lisp_Object Qlatin
;
185 /* Vector containing all fontsets. */
186 static Lisp_Object Vfontset_table
;
188 /* Next possibly free fontset ID. Usually this keeps the minimum
189 fontset ID not yet used. */
190 static int next_fontset_id
;
192 /* The default fontset. This gives default FAMILY and REGISTRY of
193 font for each character. */
194 static Lisp_Object Vdefault_fontset
;
196 Lisp_Object Vfont_encoding_charset_alist
;
197 Lisp_Object Vuse_default_ascent
;
198 Lisp_Object Vignore_relative_composition
;
199 Lisp_Object Valternate_fontname_alist
;
200 Lisp_Object Vfontset_alias_alist
;
201 Lisp_Object Vvertical_centering_font_regexp
;
202 Lisp_Object Votf_script_alist
;
204 /* Check if any window system is used now. */
205 void (*check_window_system_func
) P_ ((void));
208 /* Prototype declarations for static functions. */
209 static Lisp_Object fontset_add
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
211 static Lisp_Object fontset_find_font
P_ ((Lisp_Object
, int, struct face
*,
213 static void reorder_font_vector
P_ ((Lisp_Object
, struct font
*));
214 static Lisp_Object fontset_font
P_ ((Lisp_Object
, int, struct face
*, int));
215 static Lisp_Object make_fontset
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
216 static Lisp_Object fontset_pattern_regexp
P_ ((Lisp_Object
));
217 static void accumulate_script_ranges
P_ ((Lisp_Object
, Lisp_Object
,
219 Lisp_Object find_font_encoding
P_ ((Lisp_Object
));
221 static void set_fontset_font
P_ ((Lisp_Object
, Lisp_Object
));
225 /* Return 1 if ID is a valid fontset id, else return 0. */
228 fontset_id_valid_p (id
)
231 return (id
>= 0 && id
< ASIZE (Vfontset_table
) - 1);
238 /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
240 /* Return the fontset with ID. No check of ID's validness. */
241 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
243 /* Macros to access special values of FONTSET. */
244 #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
246 /* Macros to access special values of (base) FONTSET. */
247 #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
248 #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
249 #define FONTSET_SPEC(fontset) XCHAR_TABLE (fontset)->extras[5]
251 /* Macros to access special values of (realized) FONTSET. */
252 #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
253 #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
254 #define FONTSET_OBJLIST(fontset) XCHAR_TABLE (fontset)->extras[4]
255 #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
256 #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6]
257 #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
259 /* For both base and realized fontset. */
260 #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
262 #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
265 /* Macros for FONT-DEF and RFONT-DEF of fontset. */
266 #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \
268 (font_def) = Fmake_vector (make_number (3), (font_spec)); \
269 ASET ((font_def), 1, encoding); \
270 ASET ((font_def), 2, repertory); \
273 #define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
274 #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
275 #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
277 #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
278 #define RFONT_DEF_SET_FACE(rfont_def, face_id) \
279 ASET ((rfont_def), 0, make_number (face_id))
280 #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
281 #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1))
282 #define RFONT_DEF_REPERTORY(rfont_def) FONT_DEF_REPERTORY (AREF (rfont_def, 1))
283 #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2)
284 #define RFONT_DEF_SET_OBJECT(rfont_def, object) \
285 ASET ((rfont_def), 2, (object))
286 #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
287 #define RFONT_DEF_SET_SCORE(rfont_def, score) \
288 ASET ((rfont_def), 3, make_number (score))
289 #define RFONT_DEF_NEW(rfont_def, font_def) \
291 (rfont_def) = Fmake_vector (make_number (4), Qnil); \
292 ASET ((rfont_def), 1, (font_def)); \
293 RFONT_DEF_SET_SCORE ((rfont_def), 0); \
297 /* Return the element of FONTSET for the character C. If FONTSET is a
298 base fontset other then the default fontset and FONTSET doesn't
299 contain information for C, return the information in the default
302 #define FONTSET_REF(fontset, c) \
303 (EQ (fontset, Vdefault_fontset) \
304 ? CHAR_TABLE_REF (fontset, c) \
305 : fontset_ref ((fontset), (c)))
308 fontset_ref (fontset
, c
)
314 elt
= CHAR_TABLE_REF (fontset
, c
);
315 if (NILP (elt
) && ! EQ (fontset
, Vdefault_fontset
)
316 /* Don't check Vdefault_fontset for a realized fontset. */
317 && NILP (FONTSET_BASE (fontset
)))
318 elt
= CHAR_TABLE_REF (Vdefault_fontset
, c
);
322 /* Set elements of FONTSET for characters in RANGE to the value ELT.
323 RANGE is a cons (FROM . TO), where FROM and TO are character codes
324 specifying a range. */
326 #define FONTSET_SET(fontset, range, elt) \
327 Fset_char_table_range ((fontset), (range), (elt))
330 /* Modify the elements of FONTSET for characters in RANGE by replacing
331 with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
332 and TO are character codes specifying a range. If ADD is nil,
333 replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
336 #define FONTSET_ADD(fontset, range, elt, add) \
339 ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
340 : Fset_char_table_range ((fontset), (range), \
341 Fmake_vector (make_number (1), (elt)))) \
342 : fontset_add ((fontset), (range), (elt), (add)))
345 fontset_add (fontset
, range
, elt
, add
)
346 Lisp_Object fontset
, range
, elt
, add
;
349 int idx
= (EQ (add
, Qappend
) ? 0 : 1);
351 args
[1 - idx
] = Fmake_vector (make_number (1), elt
);
355 int from
= XINT (XCAR (range
));
356 int to
= XINT (XCDR (range
));
360 from1
= from
, to1
= to
;
361 args
[idx
] = char_table_ref_and_range (fontset
, from
, &from1
, &to1
);
362 char_table_set_range (fontset
, from
, to1
,
363 NILP (args
[idx
]) ? args
[1 - idx
]
364 : Fvconcat (2, args
));
370 args
[idx
] = FONTSET_FALLBACK (fontset
);
371 FONTSET_FALLBACK (fontset
)
372 = NILP (args
[idx
]) ? args
[1 - idx
] : Fvconcat (2, args
);
378 fontset_compare_rfontdef (val1
, val2
)
379 const void *val1
, *val2
;
381 return (RFONT_DEF_SCORE (*(Lisp_Object
*) val1
)
382 - RFONT_DEF_SCORE (*(Lisp_Object
*) val2
));
385 /* Update FONT-GROUP which has this form:
386 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
387 RFONT-DEF0 RFONT-DEF1 ... ]
388 Reorder RFONT-DEFs according to the current language, and update
389 CHARSET-ORDERED-LIST-TICK.
391 If PREFERRED_FAMILY is not nil, that family has the higher priority
392 if the encoding charsets or languages in font-specs are the same. */
394 extern Lisp_Object
Fassoc_string ();
397 reorder_font_vector (font_group
, font
)
398 Lisp_Object font_group
;
401 Lisp_Object vec
, font_object
;
404 int score_changed
= 0;
407 XSETFONT (font_object
, font
);
411 vec
= XCDR (font_group
);
413 /* Exclude the tailing nil element from the reordering. */
414 if (NILP (AREF (vec
, size
- 1)))
417 for (i
= 0; i
< size
; i
++)
419 Lisp_Object rfont_def
= AREF (vec
, i
);
420 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
421 Lisp_Object font_spec
= FONT_DEF_SPEC (font_def
);
422 int score
= RFONT_DEF_SCORE (rfont_def
) & 0xFF;
424 if (! font_match_p (font_spec
, font_object
))
426 Lisp_Object encoding
= FONT_DEF_ENCODING (font_def
);
428 if (! NILP (encoding
))
432 for (tail
= Vcharset_ordered_list
;
433 ! EQ (tail
, Vcharset_non_preferred_head
) && CONSP (tail
);
434 score
+= 0x100, tail
= XCDR (tail
))
435 if (EQ (encoding
, XCAR (tail
)))
440 Lisp_Object lang
= Ffont_get (font_spec
, QClang
);
443 && ! EQ (lang
, Vcurrent_iso639_language
)
444 && (! CONSP (Vcurrent_iso639_language
)
445 || NILP (Fmemq (lang
, Vcurrent_iso639_language
))))
449 if (RFONT_DEF_SCORE (rfont_def
) != score
)
451 RFONT_DEF_SET_SCORE (rfont_def
, score
);
457 qsort (XVECTOR (vec
)->contents
, size
, sizeof (Lisp_Object
),
458 fontset_compare_rfontdef
);
459 XSETCAR (font_group
, make_number (charset_ordered_list_tick
));
463 fontset_get_font_group (Lisp_Object fontset
, int c
)
465 Lisp_Object font_group
;
466 Lisp_Object base_fontset
;
467 int from
= 0, to
= MAX_CHAR
, i
;
469 xassert (! BASE_FONTSET_P (fontset
));
471 font_group
= CHAR_TABLE_REF (fontset
, c
);
473 font_group
= FONTSET_FALLBACK (fontset
);
474 if (! NILP (font_group
))
476 base_fontset
= FONTSET_BASE (fontset
);
478 font_group
= char_table_ref_and_range (base_fontset
, c
, &from
, &to
);
480 font_group
= FONTSET_FALLBACK (base_fontset
);
481 if (NILP (font_group
))
484 char_table_set_range (fontset
, from
, to
, make_number (0));
487 font_group
= Fcopy_sequence (font_group
);
488 for (i
= 0; i
< ASIZE (font_group
); i
++)
489 if (! NILP (AREF (font_group
, i
)))
491 Lisp_Object rfont_def
;
493 RFONT_DEF_NEW (rfont_def
, AREF (font_group
, i
));
494 /* Remember the original order. */
495 RFONT_DEF_SET_SCORE (rfont_def
, i
);
496 ASET (font_group
, i
, rfont_def
);
498 font_group
= Fcons (make_number (-1), font_group
);
500 char_table_set_range (fontset
, from
, to
, font_group
);
502 FONTSET_FALLBACK (fontset
) = font_group
;
506 /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
507 character C. If no font is found, return Qnil if there's a
508 possibility that the default fontset or the fallback font groups
509 have a proper font, and return Qt if not.
511 If a font is found but is not yet opened, open it (if FACE is not
512 NULL) or return Qnil (if FACE is NULL).
514 ID is a charset-id that must be preferred, or -1 meaning no
517 If FALLBACK is nonzero, search only fallback fonts. */
520 fontset_find_font (fontset
, c
, face
, id
, fallback
)
526 Lisp_Object vec
, font_group
;
527 int i
, charset_matched
= -1;
528 FRAME_PTR f
= (FRAMEP (FONTSET_FRAME (fontset
)))
529 ? XFRAME (selected_frame
) : XFRAME (FONTSET_FRAME (fontset
));
531 font_group
= fontset_get_font_group (fontset
, fallback
? -1 : c
);
532 if (! CONSP (font_group
))
534 vec
= XCDR (font_group
);
535 if (ASIZE (vec
) == 0)
540 if (XINT (XCAR (font_group
)) != charset_ordered_list_tick
)
541 /* We have just created the font-group,
542 or the charset priorities were changed. */
543 reorder_font_vector (font_group
, face
->ascii_face
->font
);
545 /* Find a spec matching with the charset ID to try at
547 for (i
= 0; i
< ASIZE (vec
); i
++)
549 Lisp_Object rfont_def
= AREF (vec
, i
);
550 Lisp_Object repertory
551 = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def
));
553 if (XINT (repertory
) == id
)
561 /* Find the first available font in the vector of RFONT-DEF. */
562 for (i
= 0; i
< ASIZE (vec
); i
++)
564 Lisp_Object rfont_def
, font_def
;
565 Lisp_Object font_entity
, font_object
;
567 if (i
== 0 && charset_matched
>= 0)
569 /* Try the element matching with the charset ID at first. */
570 rfont_def
= AREF (vec
, charset_matched
);
571 charset_matched
= -1;
574 else if (i
!= charset_matched
)
575 rfont_def
= AREF (vec
, i
);
579 if (NILP (rfont_def
))
580 /* This is a sign of not to try the other fonts. */
582 if (INTEGERP (RFONT_DEF_FACE (rfont_def
))
583 && XINT (RFONT_DEF_FACE (rfont_def
)) < 0)
584 /* We couldn't open this font last time. */
587 font_object
= RFONT_DEF_OBJECT (rfont_def
);
588 if (NILP (font_object
))
590 font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
593 /* We have not yet opened the font. */
595 /* Find a font best-matching with the spec without checking
596 the support of the character C. That checking is costly,
597 and even without the checking, the found font supports C
598 in high possibility. */
599 font_entity
= font_find_for_lface (f
, face
->lface
,
600 FONT_DEF_SPEC (font_def
), -1);
601 if (NILP (font_entity
))
603 /* Record that no font matches the spec. */
604 RFONT_DEF_SET_FACE (rfont_def
, -1);
607 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
608 FONT_DEF_SPEC (font_def
));
609 if (NILP (font_object
))
611 /* Something strange happened, perhaps because of a
612 Font-backend problem. Too avoid crashing, record
613 that this spec is unsable. It may be better to find
614 another font of the same spec, but currently we don't
616 RFONT_DEF_SET_FACE (rfont_def
, -1);
619 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
622 if (font_has_char (f
, font_object
, c
))
625 /* Find a font already opened, maching with the current spec,
627 font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
628 for (i
++; i
< ASIZE (vec
); i
++)
630 rfont_def
= AREF (vec
, i
);
631 if (! EQ (RFONT_DEF_FONT_DEF (rfont_def
), font_def
))
633 font_object
= RFONT_DEF_OBJECT (AREF (vec
, i
));
634 if (! NILP (font_object
) && font_has_char (f
, font_object
, c
))
638 /* Find a font-entity with the current spec and supporting C. */
639 font_entity
= font_find_for_lface (f
, face
->lface
,
640 FONT_DEF_SPEC (font_def
), c
);
641 if (! NILP (font_entity
))
643 /* We found a font. Open it and insert a new element for
648 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
650 if (NILP (font_object
))
652 RFONT_DEF_NEW (rfont_def
, font_def
);
653 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
654 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (rfont_def
));
655 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
656 for (j
= 0; j
< i
; j
++)
657 ASET (new_vec
, j
, AREF (vec
, j
));
658 ASET (new_vec
, j
, rfont_def
);
659 for (j
++; j
< ASIZE (new_vec
); j
++)
660 ASET (new_vec
, j
, AREF (vec
, j
- 1));
661 XSETCDR (font_group
, new_vec
);
665 /* No font of the current spec for C. Try the next spec. */
669 FONTSET_SET (fontset
, make_number (c
), make_number (0));
675 fontset_font (fontset
, c
, face
, id
)
681 Lisp_Object rfont_def
;
682 Lisp_Object base_fontset
;
684 /* Try a font-group of FONTSET. */
685 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
686 if (VECTORP (rfont_def
))
688 if (EQ (rfont_def
, Qt
))
691 /* Try a font-group of the default fontset. */
692 base_fontset
= FONTSET_BASE (fontset
);
693 if (! EQ (base_fontset
, Vdefault_fontset
))
695 if (NILP (FONTSET_DEFAULT (fontset
)))
696 FONTSET_DEFAULT (fontset
)
697 = make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
);
698 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
699 if (VECTORP (rfont_def
))
701 if (EQ (rfont_def
, Qt
))
705 /* Try a fallback font-group of FONTSET. */
706 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
707 if (VECTORP (rfont_def
))
709 if (EQ (rfont_def
, Qt
))
712 /* Try a fallback font-group of the default fontset . */
713 if (! EQ (base_fontset
, Vdefault_fontset
))
715 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
716 if (VECTORP (rfont_def
))
720 /* Remember that we have no font for C. */
721 FONTSET_SET (fontset
, make_number (c
), Qt
);
726 /* Return a newly created fontset with NAME. If BASE is nil, make a
727 base fontset. Otherwise make a realized fontset whose base is
731 make_fontset (frame
, name
, base
)
732 Lisp_Object frame
, name
, base
;
735 int size
= ASIZE (Vfontset_table
);
736 int id
= next_fontset_id
;
738 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
739 the next available fontset ID. So it is expected that this loop
740 terminates quickly. In addition, as the last element of
741 Vfontset_table is always nil, we don't have to check the range of
743 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
746 Vfontset_table
= larger_vector (Vfontset_table
, size
+ 32, Qnil
);
748 fontset
= Fmake_char_table (Qfontset
, Qnil
);
750 FONTSET_ID (fontset
) = make_number (id
);
753 FONTSET_NAME (fontset
) = name
;
757 FONTSET_NAME (fontset
) = Qnil
;
758 FONTSET_FRAME (fontset
) = frame
;
759 FONTSET_BASE (fontset
) = base
;
762 ASET (Vfontset_table
, id
, fontset
);
763 next_fontset_id
= id
+ 1;
768 /* Set the ASCII font of the default fontset to FONTNAME if that is
771 set_default_ascii_font (fontname
)
772 Lisp_Object fontname
;
774 if (! STRINGP (FONTSET_ASCII (Vdefault_fontset
)))
776 int id
= fs_query_fontset (fontname
, 2);
779 fontname
= FONTSET_ASCII (FONTSET_FROM_ID (id
));
780 FONTSET_ASCII (Vdefault_fontset
)= fontname
;
785 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
787 /* Return the name of the fontset who has ID. */
795 fontset
= FONTSET_FROM_ID (id
);
796 return FONTSET_NAME (fontset
);
800 /* Return the ASCII font name of the fontset who has ID. */
806 Lisp_Object fontset
, elt
;
808 fontset
= FONTSET_FROM_ID (id
);
809 elt
= FONTSET_ASCII (fontset
);
816 free_realized_fontset (f
, fontset
)
823 for (tail
= FONTSET_OBJLIST (fontset
); CONSP (tail
); tail
= XCDR (tail
))
825 xassert (FONT_OBJECT_P (XCAR (tail
)));
826 font_close_object (f
, XCAR (tail
));
830 /* Free fontset of FACE defined on frame F. Called from
831 free_realized_face. */
834 free_face_fontset (f
, face
)
840 fontset
= FONTSET_FROM_ID (face
->fontset
);
843 xassert (! BASE_FONTSET_P (fontset
));
844 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
845 free_realized_fontset (f
, fontset
);
846 ASET (Vfontset_table
, face
->fontset
, Qnil
);
847 if (face
->fontset
< next_fontset_id
)
848 next_fontset_id
= face
->fontset
;
849 if (! NILP (FONTSET_DEFAULT (fontset
)))
851 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
853 fontset
= AREF (Vfontset_table
, id
);
854 xassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
855 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
856 free_realized_fontset (f
, fontset
);
857 ASET (Vfontset_table
, id
, Qnil
);
858 if (id
< next_fontset_id
)
859 next_fontset_id
= face
->fontset
;
865 /* Return 1 if FACE is suitable for displaying character C.
866 Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
867 when C is not an ASCII character. */
870 face_suitable_for_char_p (face
, c
)
874 Lisp_Object fontset
, rfont_def
;
876 fontset
= FONTSET_FROM_ID (face
->fontset
);
877 rfont_def
= fontset_font (fontset
, c
, NULL
, -1);
878 return (VECTORP (rfont_def
)
879 && INTEGERP (RFONT_DEF_FACE (rfont_def
))
880 && face
->id
== XINT (RFONT_DEF_FACE (rfont_def
)));
884 /* Return ID of face suitable for displaying character C on frame F.
885 FACE must be reazlied for ASCII characters in advance. Called from
886 the macro FACE_FOR_CHAR. */
889 face_for_char (f
, face
, c
, pos
, object
)
895 Lisp_Object fontset
, rfont_def
, charset
;
899 /* If face->fontset is negative (that happens when no font is found
900 for face), just return face->ascii_face because we can't do
901 anything. Perhaps, we should fix the callers to assure
902 that face->fontset is always valid. */
903 if (ASCII_CHAR_P (c
) || face
->fontset
< 0)
904 return face
->ascii_face
->id
;
906 xassert (fontset_id_valid_p (face
->fontset
));
907 fontset
= FONTSET_FROM_ID (face
->fontset
);
908 xassert (!BASE_FONTSET_P (fontset
));
917 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
918 if (CHARSETP (charset
))
922 val
= assq_no_quit (charset
, Vfont_encoding_charset_alist
);
923 if (CONSP (val
) && CHARSETP (XCDR (val
)))
924 charset
= XCDR (val
);
925 id
= XINT (CHARSET_SYMBOL_ID (charset
));
931 font_deferred_log ("font for", Fcons (make_number (c
), charset
), Qnil
);
932 rfont_def
= fontset_font (fontset
, c
, face
, id
);
933 if (VECTORP (rfont_def
))
935 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
936 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
939 Lisp_Object font_object
;
941 font_object
= RFONT_DEF_OBJECT (rfont_def
);
942 face_id
= face_for_font (f
, font_object
, face
);
943 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
948 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
949 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
952 face_id
= face_for_font (f
, Qnil
, face
);
953 FONTSET_NOFONT_FACE (fontset
) = make_number (face_id
);
956 xassert (face_id
>= 0);
962 font_for_char (face
, c
, pos
, object
)
967 Lisp_Object fontset
, rfont_def
, charset
;
971 if (ASCII_CHAR_P (c
))
973 Lisp_Object font_object
;
975 XSETFONT (font_object
, face
->ascii_face
->font
);
979 xassert (fontset_id_valid_p (face
->fontset
));
980 fontset
= FONTSET_FROM_ID (face
->fontset
);
981 xassert (!BASE_FONTSET_P (fontset
));
989 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
990 if (CHARSETP (charset
))
994 val
= assq_no_quit (charset
, Vfont_encoding_charset_alist
);
995 if (CONSP (val
) && CHARSETP (XCDR (val
)))
996 charset
= XCDR (val
);
997 id
= XINT (CHARSET_SYMBOL_ID (charset
));
1003 font_deferred_log ("font for", Fcons (make_number (c
), charset
), Qnil
);
1004 rfont_def
= fontset_font (fontset
, c
, face
, id
);
1005 return (VECTORP (rfont_def
)
1006 ? RFONT_DEF_OBJECT (rfont_def
)
1011 /* Make a realized fontset for ASCII face FACE on frame F from the
1012 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
1013 default fontset as the base. Value is the id of the new fontset.
1014 Called from realize_x_face. */
1017 make_fontset_for_ascii_face (f
, base_fontset_id
, face
)
1019 int base_fontset_id
;
1022 Lisp_Object base_fontset
, fontset
, frame
;
1024 XSETFRAME (frame
, f
);
1025 if (base_fontset_id
>= 0)
1027 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
1028 if (!BASE_FONTSET_P (base_fontset
))
1029 base_fontset
= FONTSET_BASE (base_fontset
);
1030 if (! BASE_FONTSET_P (base_fontset
))
1034 base_fontset
= Vdefault_fontset
;
1036 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
1037 return XINT (FONTSET_ID (fontset
));
1042 /* Cache data used by fontset_pattern_regexp. The car part is a
1043 pattern string containing at least one wild card, the cdr part is
1044 the corresponding regular expression. */
1045 static Lisp_Object Vcached_fontset_data
;
1047 #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data)))
1048 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
1050 /* If fontset name PATTERN contains any wild card, return regular
1051 expression corresponding to PATTERN. */
1054 fontset_pattern_regexp (pattern
)
1055 Lisp_Object pattern
;
1057 if (!index ((char *) SDATA (pattern
), '*')
1058 && !index ((char *) SDATA (pattern
), '?'))
1059 /* PATTERN does not contain any wild cards. */
1062 if (!CONSP (Vcached_fontset_data
)
1063 || strcmp ((char *) SDATA (pattern
), CACHED_FONTSET_NAME
))
1065 /* We must at first update the cached data. */
1066 unsigned char *regex
, *p0
, *p1
;
1067 int ndashes
= 0, nstars
= 0, nescs
= 0;
1069 for (p0
= SDATA (pattern
); *p0
; p0
++)
1073 else if (*p0
== '*')
1076 || *p0
== '.' || *p0
== '\\'
1077 || *p0
== '+' || *p0
== '^'
1082 /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise
1083 we convert "*" to "[^-]*" which is much faster in regular
1084 expression matching. */
1086 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 2 * nstars
+ 2 * nescs
+ 1);
1088 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 5 * nstars
+ 2 * nescs
+ 1);
1091 for (p0
= SDATA (pattern
); *p0
; p0
++)
1098 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1101 else if (*p0
== '?')
1104 || *p0
== '.' || *p0
== '\\'
1105 || *p0
== '+' || *p0
== '^'
1107 *p1
++ = '\\', *p1
++ = *p0
;
1114 Vcached_fontset_data
= Fcons (build_string ((char *) SDATA (pattern
)),
1115 build_string ((char *) regex
));
1118 return CACHED_FONTSET_REGEX
;
1121 /* Return ID of the base fontset named NAME. If there's no such
1122 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1123 0: pattern containing '*' and '?' as wildcards
1124 1: regular expression
1125 2: literal fontset name
1129 fs_query_fontset (name
, name_pattern
)
1136 name
= Fdowncase (name
);
1137 if (name_pattern
!= 1)
1139 tem
= Frassoc (name
, Vfontset_alias_alist
);
1141 tem
= Fassoc (name
, Vfontset_alias_alist
);
1142 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1144 else if (name_pattern
== 0)
1146 tem
= fontset_pattern_regexp (name
);
1155 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1157 Lisp_Object fontset
, this_name
;
1159 fontset
= FONTSET_FROM_ID (i
);
1161 || !BASE_FONTSET_P (fontset
))
1164 this_name
= FONTSET_NAME (fontset
);
1165 if (name_pattern
== 1
1166 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1167 : !xstrcasecmp (SDATA (name
), SDATA (this_name
)))
1174 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1175 doc
: /* Return the name of a fontset that matches PATTERN.
1176 The value is nil if there is no matching fontset.
1177 PATTERN can contain `*' or `?' as a wildcard
1178 just as X font name matching algorithm allows.
1179 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1181 Lisp_Object pattern
, regexpp
;
1183 Lisp_Object fontset
;
1186 (*check_window_system_func
) ();
1188 CHECK_STRING (pattern
);
1190 if (SCHARS (pattern
) == 0)
1193 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1197 fontset
= FONTSET_FROM_ID (id
);
1198 return FONTSET_NAME (fontset
);
1201 /* Return a list of base fontset names matching PATTERN on frame F. */
1204 list_fontsets (f
, pattern
, size
)
1206 Lisp_Object pattern
;
1209 Lisp_Object frame
, regexp
, val
;
1212 XSETFRAME (frame
, f
);
1214 regexp
= fontset_pattern_regexp (pattern
);
1217 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1219 Lisp_Object fontset
, name
;
1221 fontset
= FONTSET_FROM_ID (id
);
1223 || !BASE_FONTSET_P (fontset
)
1224 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1226 name
= FONTSET_NAME (fontset
);
1228 if (STRINGP (regexp
)
1229 ? (fast_string_match (regexp
, name
) < 0)
1230 : strcmp ((char *) SDATA (pattern
), (char *) SDATA (name
)))
1233 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1240 /* Free all realized fontsets whose base fontset is BASE. */
1243 free_realized_fontsets (base
)
1249 /* For the moment, this doesn't work because free_realized_face
1250 doesn't remove FACE from a cache. Until we find a solution, we
1251 suppress this code, and simply use Fclear_face_cache even though
1252 that is not efficient. */
1254 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1256 Lisp_Object
this = AREF (Vfontset_table
, id
);
1258 if (EQ (FONTSET_BASE (this), base
))
1262 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1265 FRAME_PTR f
= XFRAME (FONTSET_FRAME (this));
1266 int face_id
= XINT (XCDR (XCAR (tail
)));
1267 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1269 /* Face THIS itself is also freed by the following call. */
1270 free_realized_face (f
, face
);
1276 /* But, we don't have to call Fclear_face_cache if no fontset has
1277 been realized from BASE. */
1278 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1280 Lisp_Object
this = AREF (Vfontset_table
, id
);
1282 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1284 Fclear_face_cache (Qt
);
1292 /* Check validity of NAME as a fontset name and return the
1293 corresponding fontset. If not valid, signal an error.
1294 If NAME is t, return Vdefault_fontset. */
1297 check_fontset_name (name
)
1303 return Vdefault_fontset
;
1305 CHECK_STRING (name
);
1306 /* First try NAME as literal. */
1307 id
= fs_query_fontset (name
, 2);
1309 /* For backward compatibility, try again NAME as pattern. */
1310 id
= fs_query_fontset (name
, 0);
1312 error ("Fontset `%s' does not exist", SDATA (name
));
1313 return FONTSET_FROM_ID (id
);
1317 accumulate_script_ranges (arg
, range
, val
)
1318 Lisp_Object arg
, range
, val
;
1320 if (EQ (XCAR (arg
), val
))
1323 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1325 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1330 /* Return an ASCII font name generated from fontset name NAME and
1331 font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */
1333 static INLINE Lisp_Object
1334 generate_ascii_font_name (name
, ascii_spec
)
1335 Lisp_Object name
, ascii_spec
;
1337 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1341 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1342 error ("Not an XLFD font name: %s", SDATA (name
));
1343 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1344 if (! NILP (AREF (ascii_spec
, i
)))
1345 ASET (font_spec
, i
, AREF (ascii_spec
, i
));
1346 i
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1348 error ("Not an XLFD font name: %s", SDATA (name
));
1349 return make_unibyte_string (xlfd
, i
);
1352 /* Variables referred in set_fontset_font. They are set before
1353 map_charset_chars is called in Fset_fontset_font. */
1354 static Lisp_Object font_def_arg
, add_arg
;
1355 static int from_arg
, to_arg
;
1357 /* Callback function for map_charset_chars in Fset_fontset_font. In
1358 FONTSET, set font_def_arg in a fashion specified by add_arg for
1359 characters in RANGE while ignoring the range between from_arg and
1363 set_fontset_font (fontset
, range
)
1364 Lisp_Object fontset
, range
;
1366 if (from_arg
< to_arg
)
1368 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1370 if (from
< from_arg
)
1376 range2
= Fcons (make_number (to_arg
), XCDR (range
));
1377 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1381 range
= Fcons (XCAR (range
), make_number (from_arg
));
1383 else if (to
<= to_arg
)
1388 range
= Fcons (make_number (to_arg
), XCDR (range
));
1391 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1394 extern Lisp_Object QCfamily
, QCregistry
;
1395 static void update_auto_fontset_alist
P_ ((Lisp_Object
, Lisp_Object
));
1398 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1400 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1402 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1403 In that case, use FONT-SPEC for all characters in the range FROM and
1406 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1407 all characters that belong to the script.
1409 TARGET may be a charset. In that case, use FONT-SPEC for all
1410 characters in the charset.
1412 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1413 that no FONT-SPEC is specified.
1415 FONT-SPEC may one of these:
1416 * A font-spec object made by the function `font-spec' (which see).
1417 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1418 REGISTRY is a font registry name. FAMILY may contain foundry
1419 name, and REGISTRY may contain encoding name.
1420 * A font name string.
1421 * nil, which explicitly specifies that there's no font for TARGET.
1423 Optional 4th argument FRAME, if non-nil, is a frame. This argument is
1424 kept for backward compatibility and has no meaning.
1426 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1427 to the font specifications for TARGET previously set. If it is
1428 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1429 appended. By default, FONT-SPEC overrides the previous settings. */)
1430 (name
, target
, font_spec
, frame
, add
)
1431 Lisp_Object name
, target
, font_spec
, frame
, add
;
1433 Lisp_Object fontset
;
1434 Lisp_Object font_def
, registry
, family
;
1435 Lisp_Object range_list
;
1436 struct charset
*charset
= NULL
;
1437 Lisp_Object fontname
;
1438 int ascii_changed
= 0;
1440 fontset
= check_fontset_name (name
);
1442 /* The arg FRAME is kept for backward compatibility. We only check
1445 CHECK_LIVE_FRAME (frame
);
1448 if (CONSP (font_spec
))
1450 Lisp_Object spec
= Ffont_spec (0, NULL
);
1452 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1454 fontname
= Ffont_xlfd_name (font_spec
, Qnil
);
1456 else if (STRINGP (font_spec
))
1458 Lisp_Object args
[2];
1459 extern Lisp_Object QCname
;
1461 fontname
= font_spec
;
1463 args
[1] = font_spec
;
1464 font_spec
= Ffont_spec (2, args
);
1466 else if (FONT_SPEC_P (font_spec
))
1467 fontname
= Ffont_xlfd_name (font_spec
, Qnil
);
1468 else if (! NILP (font_spec
))
1469 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1471 if (! NILP (font_spec
))
1473 Lisp_Object encoding
, repertory
;
1475 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1476 if (! NILP (family
) )
1477 family
= SYMBOL_NAME (family
);
1478 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1479 if (! NILP (registry
))
1480 registry
= Fdowncase (SYMBOL_NAME (registry
));
1481 encoding
= find_font_encoding (concat3 (family
, build_string ("-"),
1483 if (NILP (encoding
))
1486 if (SYMBOLP (encoding
))
1488 CHECK_CHARSET (encoding
);
1489 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1493 repertory
= XCDR (encoding
);
1494 encoding
= XCAR (encoding
);
1495 CHECK_CHARSET (encoding
);
1496 encoding
= CHARSET_SYMBOL_ID (encoding
);
1497 if (! NILP (repertory
) && SYMBOLP (repertory
))
1499 CHECK_CHARSET (repertory
);
1500 repertory
= CHARSET_SYMBOL_ID (repertory
);
1503 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1508 if (CHARACTERP (target
))
1510 if (XFASTINT (target
) < 0x80)
1511 error ("Can't set a font for partial ASCII range.");
1512 range_list
= Fcons (Fcons (target
, target
), Qnil
);
1514 else if (CONSP (target
))
1516 Lisp_Object from
, to
;
1518 from
= Fcar (target
);
1520 CHECK_CHARACTER (from
);
1521 CHECK_CHARACTER (to
);
1522 if (XFASTINT (from
) < 0x80)
1524 if (XFASTINT (from
) != 0 || XFASTINT (to
) < 0x7F)
1525 error ("Can't set a font for partial ASCII range.");
1528 range_list
= Fcons (target
, Qnil
);
1530 else if (SYMBOLP (target
) && !NILP (target
))
1532 Lisp_Object script_list
;
1536 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1537 if (! NILP (Fmemq (target
, script_list
)))
1539 if (EQ (target
, Qlatin
))
1541 val
= Fcons (target
, Qnil
);
1542 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1544 range_list
= XCDR (val
);
1546 if (CHARSETP (target
))
1548 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1549 if (charset
->ascii_compatible_p
)
1552 else if (NILP (range_list
))
1553 error ("Invalid script or charset name: %s",
1554 SDATA (SYMBOL_NAME (target
)));
1556 else if (NILP (target
))
1557 range_list
= Fcons (Qnil
, Qnil
);
1559 error ("Invalid target for setting a font");
1561 if (NILP (font_spec
) && ascii_changed
)
1562 error ("Can't set ASCII font to nil");
1566 font_def_arg
= font_def
;
1568 if (NILP (range_list
))
1569 from_arg
= to_arg
= 0;
1571 from_arg
= XINT (XCAR (XCAR (range_list
))),
1572 to_arg
= XINT (XCDR (XCAR (range_list
)));
1574 map_charset_chars (set_fontset_font
, Qnil
, fontset
, charset
,
1575 CHARSET_MIN_CODE (charset
),
1576 CHARSET_MAX_CODE (charset
));
1578 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1579 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1581 /* Free all realized fontsets whose base is FONTSET. This way, the
1582 specified character(s) are surely redisplayed by a correct
1584 free_realized_fontsets (fontset
);
1588 Lisp_Object tail
, frame
, alist
;
1589 int fontset_id
= XINT (FONTSET_ID (fontset
));
1592 FONTSET_ASCII (fontset
) = fontname
;
1593 name
= FONTSET_NAME (fontset
);
1594 FOR_EACH_FRAME (tail
, frame
)
1596 FRAME_PTR f
= XFRAME (frame
);
1597 Lisp_Object font_object
;
1599 if (FRAME_INITIAL_P(f
) || FRAME_TERMCAP_P (f
))
1601 if (fontset_id
!= FRAME_FONTSET (f
))
1603 font_object
= font_open_by_spec (f
, font_spec
);
1604 if (! NILP (font_object
))
1606 update_auto_fontset_alist (font_object
, fontset
);
1608 alist
= Fcons (Fcons (Qfont
, name
), Qnil
);
1609 Fmodify_frame_parameters (frame
, alist
);
1618 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1619 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1621 FONTLIST is an alist of scripts vs the corresponding font specification list.
1622 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1623 character of SCRIPT is displayed by a font that matches one of
1626 SCRIPT is a symbol that appears in the first extra slot of the
1627 char-table `char-script-table'.
1629 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1630 `set-fontset-font' for the meaning. */)
1632 Lisp_Object name
, fontlist
;
1634 Lisp_Object fontset
;
1637 CHECK_STRING (name
);
1638 CHECK_LIST (fontlist
);
1640 name
= Fdowncase (name
);
1641 id
= fs_query_fontset (name
, 0);
1644 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1645 Lisp_Object short_name
;
1649 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1650 error ("Fontset name must be in XLFD format");
1651 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1652 if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1653 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1654 error ("Registry field of fontset name must be \"fontset-*\"");
1655 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1656 Vfontset_alias_alist
);
1657 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1658 fontset
= make_fontset (Qnil
, name
, Qnil
);
1659 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1661 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1662 FONTSET_ASCII (fontset
) = make_unibyte_string (xlfd
, len
);
1666 fontset
= FONTSET_FROM_ID (id
);
1667 free_realized_fontsets (fontset
);
1668 Fset_char_table_range (fontset
, Qt
, Qnil
);
1671 for (; ! NILP (fontlist
); fontlist
= Fcdr (fontlist
))
1673 Lisp_Object elt
, script
;
1675 elt
= Fcar (fontlist
);
1676 script
= Fcar (elt
);
1678 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1679 for (; CONSP (elt
); elt
= XCDR (elt
))
1680 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1682 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1688 /* Alist of automatically created fontsets. Each element is a cons
1689 (FONT-SPEC . FONTSET-ID). */
1690 static Lisp_Object auto_fontset_alist
;
1692 /* Number of automatically created fontsets. */
1693 static int num_auto_fontsets
;
1695 /* Retun a fontset synthesized from FONT-OBJECT. */
1698 fontset_from_font (font_object
)
1699 Lisp_Object font_object
;
1701 Lisp_Object font_name
= font_get_name (font_object
);
1702 Lisp_Object font_spec
= Fcopy_font_spec (font_object
);
1703 Lisp_Object registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1704 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1708 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1710 return XINT (FONTSET_ID (XCDR (val
)));
1711 if (num_auto_fontsets
++ == 0)
1712 alias
= intern ("fontset-startup");
1717 sprintf (temp
, "fontset-auto%d", num_auto_fontsets
- 1);
1718 alias
= intern (temp
);
1720 fontset_spec
= Fcopy_font_spec (font_spec
);
1721 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1722 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1725 fontset
= make_fontset (Qnil
, name
, Qnil
);
1726 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1727 Vfontset_alias_alist
);
1728 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1729 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1730 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1731 font_spec
= Fcopy_font_spec (font_spec
);
1732 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso10646_1
);
1733 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1734 ASET (font_spec
, i
, Qnil
);
1735 Fset_fontset_font (name
, Qlatin
, font_spec
, Qnil
, Qnil
);
1736 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1737 if (registry
!= Qiso10646_1
)
1739 ASET (font_spec
, FONT_REGISTRY_INDEX
, registry
);
1740 Fset_fontset_font (name
, Qascii
, font_spec
, Qnil
, Qnil
);
1742 FONTSET_ASCII (fontset
) = font_name
;
1745 nsfont_make_fontset_for_font(name
, font_object
);
1748 return XINT (FONTSET_ID (fontset
));
1752 /* Update auto_fontset_alist for FONTSET. When an ASCII font of
1753 FONTSET is changed, we delete an entry of FONTSET if any from
1754 auto_fontset_alist so that FONTSET is not re-used by
1755 fontset_from_font. */
1758 update_auto_fontset_alist (font_object
, fontset
)
1759 Lisp_Object font_object
, fontset
;
1761 Lisp_Object prev
, tail
;
1763 for (prev
= Qnil
, tail
= auto_fontset_alist
; CONSP (tail
);
1764 prev
= tail
, tail
= XCDR (tail
))
1765 if (EQ (fontset
, XCDR (XCAR (tail
))))
1768 auto_fontset_alist
= XCDR (tail
);
1770 XSETCDR (prev
, XCDR (tail
));
1776 /* Return a cons (FONT-OBJECT . GLYPH-CODE).
1777 FONT-OBJECT is the font for the character at POSITION in the current
1778 buffer. This is computed from all the text properties and overlays
1779 that apply to POSITION. POSTION may be nil, in which case,
1780 FONT-SPEC is the font for displaying the character CH with the
1783 GLYPH-CODE is the glyph code in the font to use for the character.
1785 If the 2nd optional arg CH is non-nil, it is a character to check
1786 the font instead of the character at POSITION.
1788 It returns nil in the following cases:
1790 (1) The window system doesn't have a font for the character (thus
1791 it is displayed by an empty box).
1793 (2) The character code is invalid.
1795 (3) If POSITION is not nil, and the current buffer is not displayed
1798 In addition, the returned font name may not take into account of
1799 such redisplay engine hooks as what used in jit-lock-mode if
1800 POSITION is currently not visible. */
1803 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1804 doc
: /* For internal use only. */)
1806 Lisp_Object position
, ch
;
1808 EMACS_INT pos
, pos_byte
, dummy
;
1815 if (NILP (position
))
1817 CHECK_CHARACTER (ch
);
1819 f
= XFRAME (selected_frame
);
1820 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
1826 Lisp_Object window
, charset
;
1829 CHECK_NUMBER_COERCE_MARKER (position
);
1830 pos
= XINT (position
);
1831 if (pos
< BEGV
|| pos
>= ZV
)
1832 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1833 pos_byte
= CHAR_TO_BYTE (pos
);
1835 c
= FETCH_CHAR (pos_byte
);
1841 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1844 w
= XWINDOW (window
);
1845 f
= XFRAME (w
->frame
);
1846 face_id
= face_at_buffer_position (w
, pos
, -1, -1, &dummy
, pos
+ 100, 0);
1847 charset
= Fget_char_property (position
, Qcharset
, Qnil
);
1848 if (CHARSETP (charset
))
1849 cs_id
= XINT (CHARSET_SYMBOL_ID (charset
));
1853 if (! CHAR_VALID_P (c
, 0))
1855 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1856 face
= FACE_FROM_ID (f
, face_id
);
1859 unsigned code
= face
->font
->driver
->encode_char (face
->font
, c
);
1860 Lisp_Object font_object
;
1861 /* Assignment to EMACS_INT stops GCC whining about limited range
1863 EMACS_INT cod
= code
;
1865 if (code
== FONT_INVALID_CODE
)
1867 XSETFONT (font_object
, face
->font
);
1868 if (cod
<= MOST_POSITIVE_FIXNUM
)
1869 return Fcons (font_object
, make_number (code
));
1870 return Fcons (font_object
, Fcons (make_number (code
>> 16),
1871 make_number (code
& 0xFFFF)));
1877 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1878 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1879 The value is a char-table whose elements have this form:
1881 ((FONT-PATTERN OPENED-FONT ...) ...)
1883 FONT-PATTERN is a vector:
1885 [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
1887 or a string of font name pattern.
1889 OPENED-FONT is a name of a font actually opened.
1891 The char-table has one extra slot. The value is a char-table
1892 containing the information about the derived fonts from the default
1893 fontset. The format is the same as above. */)
1895 Lisp_Object fontset
, frame
;
1898 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1899 Lisp_Object val
, elt
;
1902 (*check_window_system_func
) ();
1904 fontset
= check_fontset_name (fontset
);
1907 frame
= selected_frame
;
1908 CHECK_LIVE_FRAME (frame
);
1911 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1912 in the table `realized'. */
1913 realized
[0] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1914 * ASIZE (Vfontset_table
));
1915 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1917 elt
= FONTSET_FROM_ID (i
);
1919 && EQ (FONTSET_BASE (elt
), fontset
)
1920 && EQ (FONTSET_FRAME (elt
), frame
))
1921 realized
[0][j
++] = elt
;
1923 realized
[0][j
] = Qnil
;
1925 realized
[1] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1926 * ASIZE (Vfontset_table
));
1927 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1929 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1931 realized
[1][j
++] = elt
;
1933 realized
[1][j
] = Qnil
;
1935 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1936 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1937 XCHAR_TABLE (tables
[0])->extras
[0] = tables
[1];
1938 fontsets
[0] = fontset
;
1939 fontsets
[1] = Vdefault_fontset
;
1941 /* Accumulate information of the fontset in TABLE. The format of
1942 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1943 for (k
= 0; k
<= 1; k
++)
1945 for (c
= 0; c
<= MAX_CHAR
; )
1947 int from
= c
, to
= MAX_5_BYTE_CHAR
;
1949 if (c
<= MAX_5_BYTE_CHAR
)
1951 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1955 val
= FONTSET_FALLBACK (fontsets
[k
]);
1962 /* At first, set ALIST to ((FONT-SPEC) ...). */
1963 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1964 if (! NILP (AREF (val
, i
)))
1965 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1967 alist
= Fnreverse (alist
);
1969 /* Then store opened font names to cdr of each elements. */
1970 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1972 if (c
<= MAX_5_BYTE_CHAR
)
1973 val
= FONTSET_REF (realized
[k
][i
], c
);
1975 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1976 if (! VECTORP (val
))
1978 /* VAL: [int ? [FACE-ID FONT-DEF FONT-OBJECT int] ... ] */
1979 for (j
= 2; j
< ASIZE (val
); j
++)
1981 elt
= AREF (val
, j
);
1982 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1984 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1985 Lisp_Object slot
, name
;
1987 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1988 name
= AREF (font_object
, FONT_NAME_INDEX
);
1989 if (NILP (Fmember (name
, XCDR (slot
))))
1990 nconc2 (slot
, Fcons (name
, Qnil
));
1995 /* Store ALIST in TBL for characters C..TO. */
1996 if (c
<= MAX_5_BYTE_CHAR
)
1997 char_table_set_range (tables
[k
], c
, to
, alist
);
1999 XCHAR_TABLE (tables
[k
])->defalt
= alist
;
2001 /* At last, change each elements to font names. */
2002 for (; CONSP (alist
); alist
= XCDR (alist
))
2005 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
2016 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
2017 doc
: /* Return a font name pattern for character CH in fontset NAME.
2018 If NAME is t, find a pattern in the default fontset.
2020 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
2021 family name and REGISTRY is a font registry name. This is actually
2022 the first font name pattern for CH in the fontset or in the default
2025 If the 2nd optional arg ALL is non-nil, return a list of all font name
2028 Lisp_Object name
, ch
, all
;
2031 Lisp_Object fontset
, elt
, list
, repertory
, val
;
2034 fontset
= check_fontset_name (name
);
2036 CHECK_CHARACTER (ch
);
2041 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
2042 i
++, elt
= FONTSET_FALLBACK (fontset
))
2044 for (j
= 0; j
< ASIZE (elt
); j
++)
2046 Lisp_Object family
, registry
;
2048 val
= AREF (elt
, j
);
2049 repertory
= AREF (val
, 1);
2050 if (INTEGERP (repertory
))
2052 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
2054 if (! CHAR_CHARSET_P (c
, charset
))
2057 else if (CHAR_TABLE_P (repertory
))
2059 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
2062 val
= AREF (val
, 0);
2063 /* VAL is a FONT-SPEC */
2064 family
= AREF (val
, FONT_FAMILY_INDEX
);
2065 if (! NILP (family
))
2066 family
= SYMBOL_NAME (family
);
2067 registry
= AREF (val
, FONT_REGISTRY_INDEX
);
2068 if (! NILP (registry
))
2069 registry
= SYMBOL_NAME (registry
);
2070 val
= Fcons (family
, registry
);
2073 list
= Fcons (val
, list
);
2075 if (EQ (fontset
, Vdefault_fontset
))
2077 fontset
= Vdefault_fontset
;
2079 return (Fnreverse (list
));
2082 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
2083 doc
: /* Return a list of all defined fontset names. */)
2086 Lisp_Object fontset
, list
;
2090 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
2092 fontset
= FONTSET_FROM_ID (i
);
2094 && BASE_FONTSET_P (fontset
))
2095 list
= Fcons (FONTSET_NAME (fontset
), list
);
2102 #ifdef FONTSET_DEBUG
2105 dump_fontset (fontset
)
2106 Lisp_Object fontset
;
2110 vec
= Fmake_vector (make_number (3), Qnil
);
2111 ASET (vec
, 0, FONTSET_ID (fontset
));
2113 if (BASE_FONTSET_P (fontset
))
2115 ASET (vec
, 1, FONTSET_NAME (fontset
));
2121 frame
= FONTSET_FRAME (fontset
);
2124 FRAME_PTR f
= XFRAME (frame
);
2126 if (FRAME_LIVE_P (f
))
2128 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), f
->name
));
2131 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
2133 if (!NILP (FONTSET_DEFAULT (fontset
)))
2134 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
2139 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
2140 doc
: /* Return a brief summary of all fontsets for debug use. */)
2146 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
2147 if (! NILP (AREF (Vfontset_table
, i
)))
2148 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
2149 return (Fnreverse (val
));
2151 #endif /* FONTSET_DEBUG */
2156 DEFSYM (Qfontset
, "fontset");
2157 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (9));
2158 DEFSYM (Qfontset_info
, "fontset-info");
2159 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2161 DEFSYM (Qprepend
, "prepend");
2162 DEFSYM (Qappend
, "append");
2163 DEFSYM (Qlatin
, "latin");
2165 Vcached_fontset_data
= Qnil
;
2166 staticpro (&Vcached_fontset_data
);
2168 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2169 staticpro (&Vfontset_table
);
2171 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2172 staticpro (&Vdefault_fontset
);
2173 FONTSET_ID (Vdefault_fontset
) = make_number (0);
2174 FONTSET_NAME (Vdefault_fontset
)
2175 = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
2176 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2177 next_fontset_id
= 1;
2179 auto_fontset_alist
= Qnil
;
2180 staticpro (&auto_fontset_alist
);
2182 DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist
,
2184 Alist of charsets vs the charsets to determine the preferred font encoding.
2185 Each element looks like (CHARSET . ENCODING-CHARSET),
2186 where ENCODING-CHARSET is a charset registered in the variable
2187 `font-encoding-alist' as ENCODING.
2189 When a text has a property `charset' and the value is CHARSET, a font
2190 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2191 Vfont_encoding_charset_alist
= Qnil
;
2193 DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent
,
2195 Char table of characters whose ascent values should be ignored.
2196 If an entry for a character is non-nil, the ascent value of the glyph
2197 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2199 This affects how a composite character which contains
2200 such a character is displayed on screen. */);
2201 Vuse_default_ascent
= Qnil
;
2203 DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition
,
2205 Char table of characters which are not composed relatively.
2206 If an entry for a character is non-nil, a composition sequence
2207 which contains that character is displayed so that
2208 the glyph of that character is put without considering
2209 an ascent and descent value of a previous character. */);
2210 Vignore_relative_composition
= Qnil
;
2212 DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist
,
2213 doc
: /* Alist of fontname vs list of the alternate fontnames.
2214 When a specified font name is not found, the corresponding
2215 alternate fontnames (if any) are tried instead. */);
2216 Valternate_fontname_alist
= Qnil
;
2218 DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist
,
2219 doc
: /* Alist of fontset names vs the aliases. */);
2220 Vfontset_alias_alist
= Fcons (Fcons (FONTSET_NAME (Vdefault_fontset
),
2221 build_string ("fontset-default")),
2224 DEFVAR_LISP ("vertical-centering-font-regexp",
2225 &Vvertical_centering_font_regexp
,
2226 doc
: /* *Regexp matching font names that require vertical centering on display.
2227 When a character is displayed with such fonts, the character is displayed
2228 at the vertical center of lines. */);
2229 Vvertical_centering_font_regexp
= Qnil
;
2231 DEFVAR_LISP ("otf-script-alist", &Votf_script_alist
,
2232 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2233 Votf_script_alist
= Qnil
;
2235 defsubr (&Squery_fontset
);
2236 defsubr (&Snew_fontset
);
2237 defsubr (&Sset_fontset_font
);
2238 defsubr (&Sinternal_char_font
);
2239 defsubr (&Sfontset_info
);
2240 defsubr (&Sfontset_font
);
2241 defsubr (&Sfontset_list
);
2242 #ifdef FONTSET_DEBUG
2243 defsubr (&Sfontset_list_all
);
2247 /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537
2248 (do not change this comment) */