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 */
36 #include "blockinput.h"
38 #include "character.h"
43 #include "dispextern.h"
44 #include "intervals.h"
56 #include "termhooks.h"
62 #define xassert(X) do {if (!(X)) abort ();} while (0)
65 #else /* not FONTSET_DEBUG */
66 #define xassert(X) (void) 0
67 #endif /* not FONTSET_DEBUG */
69 EXFUN (Fclear_face_cache
, 1);
73 A fontset is a collection of font related information to give
74 similar appearance (style, etc) of characters. A fontset has two
75 roles. One is to use for the frame parameter `font' as if it is an
76 ASCII font. In that case, Emacs uses the font specified for
77 `ascii' script for the frame's default font.
79 Another role, the more important one, is to provide information
80 about which font to use for each non-ASCII character.
82 There are two kinds of fontsets; base and realized. A base fontset
83 is created by `new-fontset' from Emacs Lisp explicitly. A realized
84 fontset is created implicitly when a face is realized for ASCII
85 characters. A face is also realized for non-ASCII characters based
86 on an ASCII face. All of non-ASCII faces based on the same ASCII
87 face share the same realized fontset.
89 A fontset object is implemented by a char-table whose default value
90 and parent are always nil.
92 An element of a base fontset is a vector of FONT-DEFs which itself
93 is a vector [ FONT-SPEC ENCODING REPERTORY ].
95 An element of a realized fontset is nil, t, or a vector of this form:
97 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
98 RFONT-DEF0 RFONT-DEF1 ... ]
100 RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
102 [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
104 RFONT-DEFn are automatically reordered by the current charset
107 The value nil means that we have not yet generated the above vector
108 from the base of the fontset.
110 The value t means that no font is available for the corresponding
114 A fontset has 9 extra slots.
116 The 1st slot: the ID number of the fontset
119 base: the name of the fontset
124 realized: the base fontset
128 realized: the frame that the fontset belongs to
131 base: the font name for ASCII characters
136 realized: the ID number of a face to use for characters that
137 has no font in a realized fontset.
141 realized: Alist of font index vs the corresponding repertory
146 realized: If the base is not the default fontset, a fontset
147 realized from the default fontset, else nil.
150 base: Same as element value (but for fallback fonts).
153 All fontsets are recorded in the vector Vfontset_table.
158 There's a special base fontset named `default fontset' which
159 defines the default font specifications. When a base fontset
160 doesn't specify a font for a specific character, the corresponding
161 value in the default fontset is used.
163 The parent of a realized fontset created for such a face that has
164 no fontset is the default fontset.
167 These structures are hidden from the other codes than this file.
168 The other codes handle fontsets only by their ID numbers. They
169 usually use the variable name `fontset' for IDs. But, in this
170 file, we always use varialbe name `id' for IDs, and name `fontset'
171 for an actual fontset object, i.e., char-table.
175 /********** VARIABLES and FUNCTION PROTOTYPES **********/
177 extern Lisp_Object Qfont
;
178 static Lisp_Object Qfontset
;
179 static Lisp_Object Qfontset_info
;
180 static Lisp_Object Qprepend
, Qappend
;
181 static Lisp_Object Qlatin
;
183 /* Vector containing all fontsets. */
184 static Lisp_Object Vfontset_table
;
186 /* Next possibly free fontset ID. Usually this keeps the minimum
187 fontset ID not yet used. */
188 static int next_fontset_id
;
190 /* The default fontset. This gives default FAMILY and REGISTRY of
191 font for each character. */
192 static Lisp_Object Vdefault_fontset
;
194 Lisp_Object Vfont_encoding_charset_alist
;
195 Lisp_Object Vuse_default_ascent
;
196 Lisp_Object Vignore_relative_composition
;
197 Lisp_Object Valternate_fontname_alist
;
198 Lisp_Object Vfontset_alias_alist
;
199 Lisp_Object Vvertical_centering_font_regexp
;
200 Lisp_Object Votf_script_alist
;
202 /* Check if any window system is used now. */
203 void (*check_window_system_func
) P_ ((void));
206 /* Prototype declarations for static functions. */
207 static Lisp_Object fontset_add
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
209 static Lisp_Object fontset_find_font
P_ ((Lisp_Object
, int, struct face
*,
211 static void reorder_font_vector
P_ ((Lisp_Object
, Lisp_Object
));
212 static Lisp_Object fontset_font
P_ ((Lisp_Object
, int, struct face
*, int));
213 static Lisp_Object make_fontset
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
214 static Lisp_Object fontset_pattern_regexp
P_ ((Lisp_Object
));
215 static void accumulate_script_ranges
P_ ((Lisp_Object
, Lisp_Object
,
217 Lisp_Object find_font_encoding
P_ ((Lisp_Object
));
219 static void set_fontset_font
P_ ((Lisp_Object
, Lisp_Object
));
223 /* Return 1 if ID is a valid fontset id, else return 0. */
226 fontset_id_valid_p (id
)
229 return (id
>= 0 && id
< ASIZE (Vfontset_table
) - 1);
236 /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
238 /* Return the fontset with ID. No check of ID's validness. */
239 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
241 /* Macros to access special values of FONTSET. */
242 #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
244 /* Macros to access special values of (base) FONTSET. */
245 #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
246 #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
247 #define FONTSET_SPEC(fontset) XCHAR_TABLE (fontset)->extras[5]
249 /* Macros to access special values of (realized) FONTSET. */
250 #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
251 #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
252 #define FONTSET_OBJLIST(fontset) XCHAR_TABLE (fontset)->extras[4]
253 #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
254 #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6]
255 #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
257 /* For both base and realized fontset. */
258 #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
260 #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
263 /* Macros for FONT-DEF and RFONT-DEF of fontset. */
264 #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \
266 (font_def) = Fmake_vector (make_number (3), (font_spec)); \
267 ASET ((font_def), 1, encoding); \
268 ASET ((font_def), 2, repertory); \
271 #define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
272 #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
273 #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
275 #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
276 #define RFONT_DEF_SET_FACE(rfont_def, face_id) \
277 ASET ((rfont_def), 0, make_number (face_id))
278 #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
279 #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1))
280 #define RFONT_DEF_REPERTORY(rfont_def) FONT_DEF_REPERTORY (AREF (rfont_def, 1))
281 #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2)
282 #define RFONT_DEF_SET_OBJECT(rfont_def, object) \
283 ASET ((rfont_def), 2, (object))
284 #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
285 #define RFONT_DEF_SET_SCORE(rfont_def, score) \
286 ASET ((rfont_def), 3, make_number (score))
287 #define RFONT_DEF_NEW(rfont_def, font_def) \
289 (rfont_def) = Fmake_vector (make_number (4), Qnil); \
290 ASET ((rfont_def), 1, (font_def)); \
291 RFONT_DEF_SET_SCORE ((rfont_def), 0); \
295 /* Return the element of FONTSET for the character C. If FONTSET is a
296 base fontset other then the default fontset and FONTSET doesn't
297 contain information for C, return the information in the default
300 #define FONTSET_REF(fontset, c) \
301 (EQ (fontset, Vdefault_fontset) \
302 ? CHAR_TABLE_REF (fontset, c) \
303 : fontset_ref ((fontset), (c)))
306 fontset_ref (fontset
, c
)
312 elt
= CHAR_TABLE_REF (fontset
, c
);
313 if (NILP (elt
) && ! EQ (fontset
, Vdefault_fontset
)
314 /* Don't check Vdefault_fontset for a realized fontset. */
315 && NILP (FONTSET_BASE (fontset
)))
316 elt
= CHAR_TABLE_REF (Vdefault_fontset
, c
);
320 /* Set elements of FONTSET for characters in RANGE to the value ELT.
321 RANGE is a cons (FROM . TO), where FROM and TO are character codes
322 specifying a range. */
324 #define FONTSET_SET(fontset, range, elt) \
325 Fset_char_table_range ((fontset), (range), (elt))
328 /* Modify the elements of FONTSET for characters in RANGE by replacing
329 with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
330 and TO are character codes specifying a range. If ADD is nil,
331 replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
334 #define FONTSET_ADD(fontset, range, elt, add) \
337 ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
338 : Fset_char_table_range ((fontset), (range), \
339 Fmake_vector (make_number (1), (elt)))) \
340 : fontset_add ((fontset), (range), (elt), (add)))
343 fontset_add (fontset
, range
, elt
, add
)
344 Lisp_Object fontset
, range
, elt
, add
;
347 int idx
= (EQ (add
, Qappend
) ? 0 : 1);
349 args
[1 - idx
] = Fmake_vector (make_number (1), elt
);
353 int from
= XINT (XCAR (range
));
354 int to
= XINT (XCDR (range
));
358 args
[idx
] = char_table_ref_and_range (fontset
, from
, &from1
, &to1
);
361 char_table_set_range (fontset
, from
, to1
,
362 NILP (args
[idx
]) ? args
[1 - idx
]
363 : Fvconcat (2, args
));
369 args
[idx
] = FONTSET_FALLBACK (fontset
);
370 FONTSET_FALLBACK (fontset
)
371 = NILP (args
[idx
]) ? args
[1 - idx
] : Fvconcat (2, args
);
377 fontset_compare_rfontdef (val1
, val2
)
378 const void *val1
, *val2
;
380 return (RFONT_DEF_SCORE (*(Lisp_Object
*) val2
)
381 - RFONT_DEF_SCORE (*(Lisp_Object
*) val1
));
384 /* Update FONT-GROUP which has this form:
385 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
386 RFONT-DEF0 RFONT-DEF1 ... ]
387 Reorder RFONT-DEFs according to the current language, and update
388 CHARSET-ORDERED-LIST-TICK.
390 If PREFERRED_FAMILY is not nil, that family has the higher priority
391 if the encoding charsets or languages in font-specs are the same. */
393 extern Lisp_Object
Fassoc_string ();
396 reorder_font_vector (font_group
, preferred_family
)
397 Lisp_Object font_group
;
398 Lisp_Object preferred_family
;
402 int score_changed
= 0;
404 size
= ASIZE (font_group
);
405 /* Exclude the tailing nil elements from the reordering. */
406 while (NILP (AREF (font_group
, size
- 1))) size
--;
409 for (i
= 0; i
< size
; i
++)
411 Lisp_Object rfont_def
= AREF (font_group
, i
+ 2);
412 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
413 Lisp_Object font_spec
= FONT_DEF_SPEC (font_def
);
414 Lisp_Object lang
= Ffont_get (font_spec
, QClang
);
415 Lisp_Object family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
416 Lisp_Object repertory
= FONT_DEF_REPERTORY (font_def
);
419 if (! NILP (repertory
))
423 for (score
= 0xFFFF, tail
= Vcharset_ordered_list
;
424 ! EQ (tail
, Vcharset_non_preferred_head
) && CONSP (tail
);
425 score
--, tail
= XCDR (tail
))
426 if (EQ (repertory
, XCAR (tail
)))
428 if (EQ (tail
, Vcharset_non_preferred_head
))
431 else if (! NILP (lang
))
433 if (EQ (lang
, Vcurrent_iso639_language
))
435 else if (CONSP (Vcurrent_iso639_language
))
436 score
= ! NILP (Fmemq (lang
, Vcurrent_iso639_language
));
439 if (! NILP (preferred_family
) && ! NILP (family
))
441 if (fast_string_match_ignore_case (preferred_family
,
442 SYMBOL_NAME (family
)) < 0)
445 if (RFONT_DEF_SCORE (rfont_def
) != score
)
447 RFONT_DEF_SET_SCORE (rfont_def
, score
);
453 qsort (XVECTOR (font_group
)->contents
+ 2, size
, sizeof (Lisp_Object
),
454 fontset_compare_rfontdef
);
456 ASET (font_group
, 0, make_number (charset_ordered_list_tick
));
459 /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
460 character C. If no font is found, return Qnil if there's a
461 possibility that the default fontset or the fallback font groups
462 have a proper font, and return Qt if not.
464 If a font is found but is not yet opened, open it (if FACE is not
465 NULL) or return Qnil (if FACE is NULL).
467 ID is a charset-id that must be preferred, or -1 meaning no
470 If FALLBACK is nonzero, search only fallback fonts. */
473 fontset_find_font (fontset
, c
, face
, id
, fallback
)
479 Lisp_Object base_fontset
, elt
, vec
;
481 FRAME_PTR f
= XFRAME (FONTSET_FRAME (fontset
));
483 base_fontset
= FONTSET_BASE (fontset
);
485 vec
= CHAR_TABLE_REF (fontset
, c
);
487 vec
= FONTSET_FALLBACK (fontset
);
493 /* We have not yet decided a font for C. */
498 elt
= char_table_ref_and_range (base_fontset
, c
, &from
, &to
);
499 range
= Fcons (make_number (from
), make_number (to
));
503 elt
= FONTSET_FALLBACK (base_fontset
);
507 /* This fontset doesn't specify any font for C. */
508 vec
= make_number (0);
510 else if (ASIZE (elt
) == 1 && NILP (AREF (elt
, 0)))
512 /* Explicitly specified no font. */
517 /* Build a font-group vector [ -1 nil RFONT-DEF0 RFONT-DEF1 ... ],
518 where the first -1 is to force reordering of RFONT-DEFs. */
519 int size
= ASIZE (elt
);
522 vec
= Fmake_vector (make_number (size
+ 2), Qnil
);
523 ASET (vec
, 0, make_number (-1));
524 for (i
= j
= 0; i
< size
; i
++)
525 if (! NILP (AREF (elt
, i
)))
527 Lisp_Object rfont_def
;
529 RFONT_DEF_NEW (rfont_def
, AREF (elt
, i
));
530 ASET (vec
, j
+ 2, rfont_def
);
534 /* Then store it in the fontset. */
536 FONTSET_SET (fontset
, range
, vec
);
538 FONTSET_FALLBACK (fontset
) = vec
;
542 return (EQ (vec
, Qt
) ? Qt
: Qnil
);
544 if (ASIZE (vec
) > 4 /* multiple RFONT-DEFs */
545 && XINT (AREF (vec
, 0)) != charset_ordered_list_tick
)
546 /* We have just created VEC,
547 or the charset priorities were changed. */
548 reorder_font_vector (vec
, face
->lface
[LFACE_FAMILY_INDEX
]);
554 && EQ (make_number (id
), RFONT_DEF_REPERTORY (elt
)))
558 for (; i
< ASIZE (vec
); i
++)
562 && EQ (make_number (id
), RFONT_DEF_REPERTORY (elt
)))
578 /* Find the first available font in the vector of RFONT-DEF. */
579 for (; i
< ASIZE (vec
); i
++)
581 Lisp_Object font_entity
, font_object
;
585 /* This is the sign of not to try fallback fonts. */
587 if (id
>= 0 && i
> 1 && EQ (AREF (vec
, 1), elt
))
588 /* This is already checked. */
590 if (INTEGERP (RFONT_DEF_FACE (elt
))
591 && XINT (AREF (elt
, 1)) < 0)
592 /* We couldn't open this font last time. */
595 font_object
= RFONT_DEF_OBJECT (elt
);
596 if (NILP (font_object
))
598 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (elt
);
601 /* We have not yet opened the font. */
603 font_entity
= font_find_for_lface (f
, face
->lface
,
604 FONT_DEF_SPEC (font_def
), -1);
605 if (NILP (font_entity
))
607 /* Record that no font matches the spec. */
608 RFONT_DEF_SET_FACE (elt
, -1);
611 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
, Qnil
);
612 if (NILP (font_object
))
614 /* Record that the font is unsable. */
615 RFONT_DEF_SET_FACE (elt
, -1);
618 RFONT_DEF_SET_OBJECT (elt
, font_object
);
621 if (font_has_char (f
, font_object
, c
))
625 /* The following code makes Emacs to find a font for C by fairly
626 exhausitive search. But, that takes long time especially for
629 /* Try to find the different font maching with the current spec
631 font_def
= RFONT_DEF_FONT_DEF (elt
);
632 for (i
++; i
< ASIZE (vec
); i
++)
634 if (! EQ (RFONT_DEF_FONT_DEF (AREF (vec
, i
)), font_def
))
636 if (font_has_char (f
, RFONT_DEF_OBJECT (AREF (vec
, i
)), c
))
637 return AREF (vec
, i
);
639 /* Find an font-entity that support C. */
640 font_entity
= font_find_for_lface (f
, face
->lface
,
641 FONT_DEF_SPEC (font_def
), c
);
642 if (! NILP (font_entity
))
644 Lisp_Object rfont_def
, new_vec
;
647 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
649 RFONT_DEF_NEW (rfont_def
, font_def
);
650 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
651 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (elt
));
652 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
653 for (j
= 0; j
< i
; j
++)
654 ASET (new_vec
, j
, AREF (vec
, j
));
655 ASET (new_vec
, j
, rfont_def
);
656 for (j
++; j
< ASIZE (new_vec
); j
++)
657 ASET (new_vec
, j
, AREF (vec
, j
- 1));
665 FONTSET_SET (fontset
, make_number (c
), make_number (0));
671 fontset_font (fontset
, c
, face
, id
)
677 Lisp_Object rfont_def
;
678 Lisp_Object base_fontset
;
680 /* Try a font-group for C. */
681 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
682 if (VECTORP (rfont_def
))
684 if (EQ (rfont_def
, Qt
))
686 /* Try a fallback font-group. */
687 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
688 if (VECTORP (rfont_def
))
690 if (EQ (rfont_def
, Qt
))
693 base_fontset
= FONTSET_BASE (fontset
);
694 if (EQ (base_fontset
, Vdefault_fontset
))
697 /* Try a font-group for C of the default fontset. */
698 if (NILP (FONTSET_DEFAULT (fontset
)))
699 FONTSET_DEFAULT (fontset
)
700 = make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
);
701 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
702 if (VECTORP (rfont_def
))
704 /* Try a fallback font-group of the default fontset . */
705 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
706 if (! VECTORP (rfont_def
))
707 /* Remeber that we have no font for C. */
708 FONTSET_SET (fontset
, make_number (c
), Qt
);
713 /* Return a newly created fontset with NAME. If BASE is nil, make a
714 base fontset. Otherwise make a realized fontset whose base is
718 make_fontset (frame
, name
, base
)
719 Lisp_Object frame
, name
, base
;
722 int size
= ASIZE (Vfontset_table
);
723 int id
= next_fontset_id
;
725 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
726 the next available fontset ID. So it is expected that this loop
727 terminates quickly. In addition, as the last element of
728 Vfontset_table is always nil, we don't have to check the range of
730 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
733 Vfontset_table
= larger_vector (Vfontset_table
, size
+ 32, Qnil
);
735 fontset
= Fmake_char_table (Qfontset
, Qnil
);
737 FONTSET_ID (fontset
) = make_number (id
);
740 FONTSET_NAME (fontset
) = name
;
744 FONTSET_NAME (fontset
) = Qnil
;
745 FONTSET_FRAME (fontset
) = frame
;
746 FONTSET_BASE (fontset
) = base
;
749 ASET (Vfontset_table
, id
, fontset
);
750 next_fontset_id
= id
+ 1;
755 /* Set the ASCII font of the default fontset to FONTNAME if that is
758 set_default_ascii_font (fontname
)
759 Lisp_Object fontname
;
761 if (! STRINGP (FONTSET_ASCII (Vdefault_fontset
)))
763 int id
= fs_query_fontset (fontname
, 2);
766 fontname
= FONTSET_ASCII (FONTSET_FROM_ID (id
));
767 FONTSET_ASCII (Vdefault_fontset
)= fontname
;
772 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
774 /* Return the name of the fontset who has ID. */
782 fontset
= FONTSET_FROM_ID (id
);
783 return FONTSET_NAME (fontset
);
787 /* Return the ASCII font name of the fontset who has ID. */
793 Lisp_Object fontset
, elt
;
795 fontset
= FONTSET_FROM_ID (id
);
796 elt
= FONTSET_ASCII (fontset
);
803 free_realized_fontset (f
, fontset
)
810 for (tail
= FONTSET_OBJLIST (fontset
); CONSP (tail
); tail
= XCDR (tail
))
812 xassert (FONT_OBJECT_P (XCAR (tail
)));
813 font_close_object (f
, XCAR (tail
));
817 /* Free fontset of FACE defined on frame F. Called from
818 free_realized_face. */
821 free_face_fontset (f
, face
)
827 fontset
= FONTSET_FROM_ID (face
->fontset
);
830 xassert (! BASE_FONTSET_P (fontset
));
831 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
832 free_realized_fontset (f
, fontset
);
833 ASET (Vfontset_table
, face
->fontset
, Qnil
);
834 if (face
->fontset
< next_fontset_id
)
835 next_fontset_id
= face
->fontset
;
836 if (! NILP (FONTSET_DEFAULT (fontset
)))
838 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
840 fontset
= AREF (Vfontset_table
, id
);
841 xassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
842 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
843 free_realized_fontset (f
, fontset
);
844 ASET (Vfontset_table
, id
, Qnil
);
845 if (id
< next_fontset_id
)
846 next_fontset_id
= face
->fontset
;
852 /* Return 1 if FACE is suitable for displaying character C.
853 Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
854 when C is not an ASCII character. */
857 face_suitable_for_char_p (face
, c
)
861 Lisp_Object fontset
, rfont_def
;
863 fontset
= FONTSET_FROM_ID (face
->fontset
);
864 rfont_def
= fontset_font (fontset
, c
, NULL
, -1);
865 return (VECTORP (rfont_def
)
866 && INTEGERP (RFONT_DEF_FACE (rfont_def
))
867 && face
->id
== XINT (RFONT_DEF_FACE (rfont_def
)));
871 /* Return ID of face suitable for displaying character C on frame F.
872 FACE must be reazlied for ASCII characters in advance. Called from
873 the macro FACE_FOR_CHAR. */
876 face_for_char (f
, face
, c
, pos
, object
)
882 Lisp_Object fontset
, rfont_def
;
886 if (ASCII_CHAR_P (c
))
887 return face
->ascii_face
->id
;
889 xassert (fontset_id_valid_p (face
->fontset
));
890 fontset
= FONTSET_FROM_ID (face
->fontset
);
891 xassert (!BASE_FONTSET_P (fontset
));
898 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
901 else if (CHARSETP (charset
))
905 val
= assoc_no_quit (charset
, Vfont_encoding_charset_alist
);
906 if (CONSP (val
) && CHARSETP (XCDR (val
)))
907 charset
= XCDR (val
);
908 id
= XINT (CHARSET_SYMBOL_ID (charset
));
911 rfont_def
= fontset_font (fontset
, c
, face
, id
);
912 if (VECTORP (rfont_def
))
914 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
915 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
918 Lisp_Object font_object
;
920 font_object
= RFONT_DEF_OBJECT (rfont_def
);
921 face_id
= face_for_font (f
, font_object
, face
);
922 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
927 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
928 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
931 face_id
= face_for_font (f
, Qnil
, face
);
932 FONTSET_NOFONT_FACE (fontset
) = make_number (face_id
);
935 xassert (face_id
>= 0);
940 /* Make a realized fontset for ASCII face FACE on frame F from the
941 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
942 default fontset as the base. Value is the id of the new fontset.
943 Called from realize_x_face. */
946 make_fontset_for_ascii_face (f
, base_fontset_id
, face
)
951 Lisp_Object base_fontset
, fontset
, frame
;
953 XSETFRAME (frame
, f
);
954 if (base_fontset_id
>= 0)
956 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
957 if (!BASE_FONTSET_P (base_fontset
))
958 base_fontset
= FONTSET_BASE (base_fontset
);
959 if (! BASE_FONTSET_P (base_fontset
))
963 base_fontset
= Vdefault_fontset
;
965 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
966 return XINT (FONTSET_ID (fontset
));
971 /* Cache data used by fontset_pattern_regexp. The car part is a
972 pattern string containing at least one wild card, the cdr part is
973 the corresponding regular expression. */
974 static Lisp_Object Vcached_fontset_data
;
976 #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data)))
977 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
979 /* If fontset name PATTERN contains any wild card, return regular
980 expression corresponding to PATTERN. */
983 fontset_pattern_regexp (pattern
)
986 if (!index ((char *) SDATA (pattern
), '*')
987 && !index ((char *) SDATA (pattern
), '?'))
988 /* PATTERN does not contain any wild cards. */
991 if (!CONSP (Vcached_fontset_data
)
992 || strcmp ((char *) SDATA (pattern
), CACHED_FONTSET_NAME
))
994 /* We must at first update the cached data. */
995 unsigned char *regex
, *p0
, *p1
;
996 int ndashes
= 0, nstars
= 0;
998 for (p0
= SDATA (pattern
); *p0
; p0
++)
1002 else if (*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
+ 1);
1012 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 5 * nstars
+ 1);
1015 for (p0
= SDATA (pattern
); *p0
; p0
++)
1022 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1025 else if (*p0
== '?')
1033 Vcached_fontset_data
= Fcons (build_string ((char *) SDATA (pattern
)),
1034 build_string ((char *) regex
));
1037 return CACHED_FONTSET_REGEX
;
1040 /* Return ID of the base fontset named NAME. If there's no such
1041 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1042 0: pattern containing '*' and '?' as wildcards
1043 1: regular expression
1044 2: literal fontset name
1048 fs_query_fontset (name
, name_pattern
)
1055 name
= Fdowncase (name
);
1056 if (name_pattern
!= 1)
1058 tem
= Frassoc (name
, Vfontset_alias_alist
);
1060 tem
= Fassoc (name
, Vfontset_alias_alist
);
1061 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1063 else if (name_pattern
== 0)
1065 tem
= fontset_pattern_regexp (name
);
1074 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1076 Lisp_Object fontset
, this_name
;
1078 fontset
= FONTSET_FROM_ID (i
);
1080 || !BASE_FONTSET_P (fontset
))
1083 this_name
= FONTSET_NAME (fontset
);
1084 if (name_pattern
== 1
1085 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1086 : !xstrcasecmp (SDATA (name
), SDATA (this_name
)))
1093 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1094 doc
: /* Return the name of a fontset that matches PATTERN.
1095 The value is nil if there is no matching fontset.
1096 PATTERN can contain `*' or `?' as a wildcard
1097 just as X font name matching algorithm allows.
1098 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1100 Lisp_Object pattern
, regexpp
;
1102 Lisp_Object fontset
;
1105 (*check_window_system_func
) ();
1107 CHECK_STRING (pattern
);
1109 if (SCHARS (pattern
) == 0)
1112 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1116 fontset
= FONTSET_FROM_ID (id
);
1117 return FONTSET_NAME (fontset
);
1120 /* Return a list of base fontset names matching PATTERN on frame F. */
1123 list_fontsets (f
, pattern
, size
)
1125 Lisp_Object pattern
;
1128 Lisp_Object frame
, regexp
, val
;
1131 XSETFRAME (frame
, f
);
1133 regexp
= fontset_pattern_regexp (pattern
);
1136 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1138 Lisp_Object fontset
, name
;
1140 fontset
= FONTSET_FROM_ID (id
);
1142 || !BASE_FONTSET_P (fontset
)
1143 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1145 name
= FONTSET_NAME (fontset
);
1147 if (STRINGP (regexp
)
1148 ? (fast_string_match (regexp
, name
) < 0)
1149 : strcmp ((char *) SDATA (pattern
), (char *) SDATA (name
)))
1152 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1159 /* Free all realized fontsets whose base fontset is BASE. */
1162 free_realized_fontsets (base
)
1168 /* For the moment, this doesn't work because free_realized_face
1169 doesn't remove FACE from a cache. Until we find a solution, we
1170 suppress this code, and simply use Fclear_face_cache even though
1171 that is not efficient. */
1173 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1175 Lisp_Object
this = AREF (Vfontset_table
, id
);
1177 if (EQ (FONTSET_BASE (this), base
))
1181 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1184 FRAME_PTR f
= XFRAME (FONTSET_FRAME (this));
1185 int face_id
= XINT (XCDR (XCAR (tail
)));
1186 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1188 /* Face THIS itself is also freed by the following call. */
1189 free_realized_face (f
, face
);
1195 /* But, we don't have to call Fclear_face_cache if no fontset has
1196 been realized from BASE. */
1197 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1199 Lisp_Object
this = AREF (Vfontset_table
, id
);
1201 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1203 Fclear_face_cache (Qt
);
1211 /* Check validity of NAME as a fontset name and return the
1212 corresponding fontset. If not valid, signal an error.
1213 If NAME is t, return Vdefault_fontset. */
1216 check_fontset_name (name
)
1222 return Vdefault_fontset
;
1224 CHECK_STRING (name
);
1225 /* First try NAME as literal. */
1226 id
= fs_query_fontset (name
, 2);
1228 /* For backward compatibility, try again NAME as pattern. */
1229 id
= fs_query_fontset (name
, 0);
1231 error ("Fontset `%s' does not exist", SDATA (name
));
1232 return FONTSET_FROM_ID (id
);
1236 accumulate_script_ranges (arg
, range
, val
)
1237 Lisp_Object arg
, range
, val
;
1239 if (EQ (XCAR (arg
), val
))
1242 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1244 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1249 /* Return an ASCII font name generated from fontset name NAME and
1250 font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */
1252 static INLINE Lisp_Object
1253 generate_ascii_font_name (name
, ascii_spec
)
1254 Lisp_Object name
, ascii_spec
;
1256 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1260 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1261 error ("Not an XLFD font name: %s", SDATA (name
));
1262 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1263 if (! NILP (AREF (ascii_spec
, i
)))
1264 ASET (font_spec
, i
, AREF (ascii_spec
, i
));
1265 i
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1267 error ("Not an XLFD font name: %s", SDATA (name
));
1268 return make_unibyte_string (xlfd
, i
);
1271 /* Variables referred in set_fontset_font. They are set before
1272 map_charset_chars is called in Fset_fontset_font. */
1273 static Lisp_Object font_def_arg
, add_arg
;
1274 static int from_arg
, to_arg
;
1276 /* Callback function for map_charset_chars in Fset_fontset_font. In
1277 FONTSET, set font_def_arg in a fashion specified by add_arg for
1278 characters in RANGE while ignoring the range between from_arg and
1282 set_fontset_font (fontset
, range
)
1283 Lisp_Object fontset
, range
;
1285 if (from_arg
< to_arg
)
1287 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1289 if (from
< from_arg
)
1295 range2
= Fcons (make_number (to_arg
), XCDR (range
));
1296 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1300 range
= Fcons (XCAR (range
), make_number (from_arg
));
1302 else if (to
<= to_arg
)
1307 range
= Fcons (make_number (to_arg
), XCDR (range
));
1310 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1313 extern Lisp_Object QCfamily
, QCregistry
;
1315 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1317 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1319 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1320 In that case, use FONT-SPEC for all characters in the range FROM and
1323 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1324 all characters that belong to the script.
1326 TARGET may be a charset. In that case, use FONT-SPEC for all
1327 characters in the charset.
1329 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1330 that no FONT-SPEC is specified.
1332 FONT-SPEC may one of these:
1333 * A font-spec object made by the function `font-spec' (which see).
1334 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1335 REGISTRY is a font registry name. FAMILY may contain foundry
1336 name, and REGISTRY may contain encoding name.
1337 * A font name string.
1338 * nil, which explicitly specifies that there's no font for TARGET.
1340 Optional 4th argument FRAME, if non-nil, is a frame. This argument is
1341 kept for backward compatibility and has no meaning.
1343 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1344 to the font specifications for TARGET previously set. If it is
1345 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1346 appended. By default, FONT-SPEC overrides the previous settings. */)
1347 (name
, target
, font_spec
, frame
, add
)
1348 Lisp_Object name
, target
, font_spec
, frame
, add
;
1350 Lisp_Object fontset
;
1351 Lisp_Object font_def
, registry
, family
;
1352 Lisp_Object range_list
;
1353 struct charset
*charset
= NULL
;
1355 fontset
= check_fontset_name (name
);
1357 /* The arg FRAME is kept for backward compatibility. We only check
1360 CHECK_LIVE_FRAME (frame
);
1362 if (CONSP (font_spec
))
1364 Lisp_Object spec
= Ffont_spec (0, NULL
);
1366 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1369 else if (STRINGP (font_spec
))
1371 Lisp_Object args
[2];
1372 extern Lisp_Object QCname
;
1375 args
[1] = font_spec
;
1376 font_spec
= Ffont_spec (2, args
);
1378 else if (! NILP (font_spec
) && ! FONT_SPEC_P (font_spec
))
1379 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1381 if (! NILP (font_spec
))
1383 Lisp_Object encoding
, repertory
;
1385 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1386 if (! NILP (family
) )
1387 family
= SYMBOL_NAME (family
);
1388 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1389 if (! NILP (registry
))
1390 registry
= Fdowncase (SYMBOL_NAME (registry
));
1391 encoding
= find_font_encoding (concat3 (family
, build_string ("-"),
1393 if (NILP (encoding
))
1396 if (SYMBOLP (encoding
))
1398 CHECK_CHARSET (encoding
);
1399 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1403 repertory
= XCDR (encoding
);
1404 encoding
= XCAR (encoding
);
1405 CHECK_CHARSET (encoding
);
1406 encoding
= CHARSET_SYMBOL_ID (encoding
);
1407 if (! NILP (repertory
) && SYMBOLP (repertory
))
1409 CHECK_CHARSET (repertory
);
1410 repertory
= CHARSET_SYMBOL_ID (repertory
);
1413 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1418 if (CHARACTERP (target
))
1419 range_list
= Fcons (Fcons (target
, target
), Qnil
);
1420 else if (CONSP (target
))
1422 Lisp_Object from
, to
;
1424 from
= Fcar (target
);
1426 CHECK_CHARACTER (from
);
1427 CHECK_CHARACTER (to
);
1428 range_list
= Fcons (target
, Qnil
);
1430 else if (SYMBOLP (target
) && !NILP (target
))
1432 Lisp_Object script_list
;
1436 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1437 if (! NILP (Fmemq (target
, script_list
)))
1439 val
= Fcons (target
, Qnil
);
1440 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1442 range_list
= XCDR (val
);
1443 if (EQ (target
, Qlatin
) && NILP (FONTSET_ASCII (fontset
)))
1445 if (VECTORP (font_spec
))
1446 val
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1450 FONTSET_ASCII (fontset
) = val
;
1453 if (CHARSETP (target
))
1455 if (EQ (target
, Qascii
) && NILP (FONTSET_ASCII (fontset
)))
1457 if (VECTORP (font_spec
))
1458 font_spec
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1460 FONTSET_ASCII (fontset
) = font_spec
;
1461 range_list
= Fcons (Fcons (make_number (0), make_number (127)),
1466 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1469 else if (NILP (range_list
))
1470 error ("Invalid script or charset name: %s",
1471 SDATA (SYMBOL_NAME (target
)));
1473 else if (NILP (target
))
1474 range_list
= Fcons (Qnil
, Qnil
);
1476 error ("Invalid target for setting a font");
1481 font_def_arg
= font_def
;
1483 if (NILP (range_list
))
1484 from_arg
= to_arg
= 0;
1486 from_arg
= XINT (XCAR (XCAR (range_list
))),
1487 to_arg
= XINT (XCDR (XCAR (range_list
)));
1489 map_charset_chars (set_fontset_font
, Qnil
, fontset
, charset
,
1490 CHARSET_MIN_CODE (charset
),
1491 CHARSET_MAX_CODE (charset
));
1493 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1494 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1496 /* Free all realized fontsets whose base is FONTSET. This way, the
1497 specified character(s) are surely redisplayed by a correct
1499 free_realized_fontsets (fontset
);
1505 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1506 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1508 FONTLIST is an alist of scripts vs the corresponding font specification list.
1509 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1510 character of SCRIPT is displayed by a font that matches one of
1513 SCRIPT is a symbol that appears in the first extra slot of the
1514 char-table `char-script-table'.
1516 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1517 `set-fontset-font' for the meaning. */)
1519 Lisp_Object name
, fontlist
;
1521 Lisp_Object fontset
;
1524 CHECK_STRING (name
);
1525 CHECK_LIST (fontlist
);
1527 name
= Fdowncase (name
);
1528 id
= fs_query_fontset (name
, 0);
1531 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1532 Lisp_Object short_name
;
1536 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1537 error ("Fontset name must be in XLFD format");
1538 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1539 if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1540 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1541 error ("Registry field of fontset name must be \"fontset-*\"");
1542 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1543 Vfontset_alias_alist
);
1544 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1545 fontset
= make_fontset (Qnil
, name
, Qnil
);
1546 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1548 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1549 FONTSET_ASCII (fontset
) = make_unibyte_string (xlfd
, len
);
1553 fontset
= FONTSET_FROM_ID (id
);;
1554 free_realized_fontsets (fontset
);
1555 Fset_char_table_range (fontset
, Qt
, Qnil
);
1558 for (; ! NILP (fontlist
); fontlist
= Fcdr (fontlist
))
1560 Lisp_Object elt
, script
;
1562 elt
= Fcar (fontlist
);
1563 script
= Fcar (elt
);
1565 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1566 for (; CONSP (elt
); elt
= XCDR (elt
))
1567 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1569 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1575 /* Alist of automatically created fontsets. Each element is a cons
1576 (FONT-SPEC . FONTSET-ID). */
1577 static Lisp_Object auto_fontset_alist
;
1580 fontset_from_font (font_object
)
1581 Lisp_Object font_object
;
1583 Lisp_Object font_name
= font_get_name (font_object
);
1584 Lisp_Object font_spec
= Fcopy_font_spec (font_object
);
1585 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1589 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1591 return XINT (FONTSET_ID (XCDR (val
)));
1592 if (NILP (auto_fontset_alist
))
1593 alias
= intern ("fontset-startup");
1597 int len
= XINT (Flength (auto_fontset_alist
));
1599 sprintf (temp
, "fontset-auto%d", len
);
1600 alias
= intern (temp
);
1602 fontset_spec
= Fcopy_font_spec (font_spec
);
1603 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1604 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1607 fontset
= make_fontset (Qnil
, name
, Qnil
);
1608 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1609 Vfontset_alias_alist
);
1610 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1611 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1612 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1613 FONTSET_ASCII (fontset
) = font_name
;
1614 ASET (font_spec
, FONT_FOUNDRY_INDEX
, Qnil
);
1615 ASET (font_spec
, FONT_ADSTYLE_INDEX
, Qnil
);
1616 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1617 ASET (font_spec
, i
, Qnil
);
1618 Fset_fontset_font (name
, Qlatin
, font_spec
, Qnil
, Qnil
);
1619 font_spec
= Fcopy_font_spec (font_spec
);
1620 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso10646_1
);
1621 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1622 return XINT (FONTSET_ID (fontset
));
1625 DEFUN ("font-info", Ffont_info
, Sfont_info
, 1, 2, 0,
1626 doc
: /* Return information about a font named NAME on frame FRAME.
1627 If FRAME is omitted or nil, use the selected frame.
1628 The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE,
1629 HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT,
1631 OPENED-NAME is the name used for opening the font,
1632 FULL-NAME is the full name of the font,
1633 SIZE is the maximum bound width of the font,
1634 HEIGHT is the height of the font,
1635 BASELINE-OFFSET is the upward offset pixels from ASCII baseline,
1636 RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling
1637 how to compose characters.
1638 If the named font is not yet loaded, return nil. */)
1640 Lisp_Object name
, frame
;
1645 Lisp_Object font_object
;
1647 (*check_window_system_func
) ();
1649 CHECK_STRING (name
);
1650 name
= Fdowncase (name
);
1652 frame
= selected_frame
;
1653 CHECK_LIVE_FRAME (frame
);
1656 font_object
= font_open_by_name (f
, (char *) SDATA (name
));
1657 if (NILP (font_object
))
1659 font
= XFONT_OBJECT (font_object
);
1661 info
= Fmake_vector (make_number (7), Qnil
);
1662 XVECTOR (info
)->contents
[0] = AREF (font_object
, FONT_NAME_INDEX
);
1663 XVECTOR (info
)->contents
[1] = AREF (font_object
, FONT_NAME_INDEX
);
1664 XVECTOR (info
)->contents
[2] = make_number (font
->pixel_size
);
1665 XVECTOR (info
)->contents
[3] = make_number (font
->height
);
1666 XVECTOR (info
)->contents
[4] = make_number (font
->baseline_offset
);
1667 XVECTOR (info
)->contents
[5] = make_number (font
->relative_compose
);
1668 XVECTOR (info
)->contents
[6] = make_number (font
->default_ascent
);
1670 font_close_object (f
, font_object
);
1675 /* Return a cons (FONT-NAME . GLYPH-CODE).
1676 FONT-NAME is the font name for the character at POSITION in the current
1677 buffer. This is computed from all the text properties and overlays
1678 that apply to POSITION. POSTION may be nil, in which case,
1679 FONT-NAME is the font name for display the character CH with the
1682 GLYPH-CODE is the glyph code in the font to use for the character.
1684 If the 2nd optional arg CH is non-nil, it is a character to check
1685 the font instead of the character at POSITION.
1687 It returns nil in the following cases:
1689 (1) The window system doesn't have a font for the character (thus
1690 it is displayed by an empty box).
1692 (2) The character code is invalid.
1694 (3) If POSITION is not nil, and the current buffer is not displayed
1697 In addition, the returned font name may not take into account of
1698 such redisplay engine hooks as what used in jit-lock-mode if
1699 POSITION is currently not visible. */
1702 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1703 doc
: /* For internal use only. */)
1705 Lisp_Object position
, ch
;
1707 EMACS_INT pos
, pos_byte
, dummy
;
1714 if (NILP (position
))
1716 CHECK_CHARACTER (ch
);
1718 f
= XFRAME (selected_frame
);
1719 face_id
= DEFAULT_FACE_ID
;
1725 Lisp_Object window
, charset
;
1728 CHECK_NUMBER_COERCE_MARKER (position
);
1729 pos
= XINT (position
);
1730 if (pos
< BEGV
|| pos
>= ZV
)
1731 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1732 pos_byte
= CHAR_TO_BYTE (pos
);
1734 c
= FETCH_CHAR (pos_byte
);
1740 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1743 w
= XWINDOW (window
);
1744 f
= XFRAME (w
->frame
);
1745 face_id
= face_at_buffer_position (w
, pos
, -1, -1, &dummy
, pos
+ 100, 0);
1746 charset
= Fget_char_property (position
, Qcharset
, Qnil
);
1747 if (CHARSETP (charset
))
1748 cs_id
= XINT (CHARSET_SYMBOL_ID (charset
));
1752 if (! CHAR_VALID_P (c
, 0))
1754 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1755 face
= FACE_FROM_ID (f
, face_id
);
1758 struct font
*font
= face
->font
;
1759 unsigned code
= font
->driver
->encode_char (font
, c
);
1760 Lisp_Object fontname
= font
->props
[FONT_NAME_INDEX
];
1761 /* Assignment to EMACS_INT stops GCC whining about limited range
1763 EMACS_INT cod
= code
;
1765 if (code
== FONT_INVALID_CODE
)
1767 if (cod
<= MOST_POSITIVE_FIXNUM
)
1768 return Fcons (fontname
, make_number (code
));
1769 return Fcons (fontname
, Fcons (make_number (code
>> 16),
1770 make_number (code
& 0xFFFF)));
1776 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1777 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1778 The value is a char-table whose elements have this form:
1780 ((FONT-PATTERN OPENED-FONT ...) ...)
1782 FONT-PATTERN is a vector:
1784 [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
1786 or a string of font name pattern.
1788 OPENED-FONT is a name of a font actually opened.
1790 The char-table has one extra slot. The value is a char-table
1791 containing the information about the derived fonts from the default
1792 fontset. The format is the same as above. */)
1794 Lisp_Object fontset
, frame
;
1797 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1798 Lisp_Object val
, elt
;
1801 (*check_window_system_func
) ();
1803 fontset
= check_fontset_name (fontset
);
1806 frame
= selected_frame
;
1807 CHECK_LIVE_FRAME (frame
);
1810 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1811 in the table `realized'. */
1812 realized
[0] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1813 * ASIZE (Vfontset_table
));
1814 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1816 elt
= FONTSET_FROM_ID (i
);
1818 && EQ (FONTSET_BASE (elt
), fontset
)
1819 && EQ (FONTSET_FRAME (elt
), frame
))
1820 realized
[0][j
++] = elt
;
1822 realized
[0][j
] = Qnil
;
1824 realized
[1] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1825 * ASIZE (Vfontset_table
));
1826 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1828 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1830 realized
[1][j
++] = elt
;
1832 realized
[1][j
] = Qnil
;
1834 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1835 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1836 XCHAR_TABLE (tables
[0])->extras
[0] = tables
[1];
1837 fontsets
[0] = fontset
;
1838 fontsets
[1] = Vdefault_fontset
;
1840 /* Accumulate information of the fontset in TABLE. The format of
1841 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1842 for (k
= 0; k
<= 1; k
++)
1844 for (c
= 0; c
<= MAX_CHAR
; )
1848 if (c
<= MAX_5_BYTE_CHAR
)
1850 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1851 if (to
> MAX_5_BYTE_CHAR
)
1852 to
= MAX_5_BYTE_CHAR
;
1856 val
= FONTSET_FALLBACK (fontsets
[k
]);
1863 /* At first, set ALIST to ((FONT-SPEC) ...). */
1864 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1865 if (! NILP (AREF (val
, i
)))
1866 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1868 alist
= Fnreverse (alist
);
1870 /* Then store opend font names to cdr of each elements. */
1871 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1873 if (c
<= MAX_5_BYTE_CHAR
)
1874 val
= FONTSET_REF (realized
[k
][i
], c
);
1876 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1877 if (! VECTORP (val
))
1879 /* VAL: [int ? [FACE-ID FONT-DEF FONT-OBJECT int] ... ] */
1880 for (j
= 2; j
< ASIZE (val
); j
++)
1882 elt
= AREF (val
, j
);
1883 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1885 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1886 Lisp_Object slot
, name
;
1888 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1889 name
= AREF (font_object
, FONT_NAME_INDEX
);
1890 if (NILP (Fmember (name
, XCDR (slot
))))
1891 nconc2 (slot
, Fcons (name
, Qnil
));
1896 /* Store ALIST in TBL for characters C..TO. */
1897 if (c
<= MAX_5_BYTE_CHAR
)
1898 char_table_set_range (tables
[k
], c
, to
, alist
);
1900 XCHAR_TABLE (tables
[k
])->defalt
= alist
;
1902 /* At last, change each elements to font names. */
1903 for (; CONSP (alist
); alist
= XCDR (alist
))
1906 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
1917 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
1918 doc
: /* Return a font name pattern for character CH in fontset NAME.
1919 If NAME is t, find a pattern in the default fontset.
1921 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
1922 family name and REGISTRY is a font registry name. This is actually
1923 the first font name pattern for CH in the fontset or in the default
1926 If the 2nd optional arg ALL is non-nil, return a list of all font name
1929 Lisp_Object name
, ch
, all
;
1932 Lisp_Object fontset
, elt
, list
, repertory
, val
;
1935 fontset
= check_fontset_name (name
);
1937 CHECK_CHARACTER (ch
);
1942 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
1943 i
++, elt
= FONTSET_FALLBACK (fontset
))
1945 for (j
= 0; j
< ASIZE (elt
); j
++)
1947 val
= AREF (elt
, j
);
1948 repertory
= AREF (val
, 1);
1949 if (INTEGERP (repertory
))
1951 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
1953 if (! CHAR_CHARSET_P (c
, charset
))
1956 else if (CHAR_TABLE_P (repertory
))
1958 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
1961 val
= AREF (val
, 0);
1962 val
= Fcons (AREF (val
, 0), AREF (val
, 5));
1965 list
= Fcons (val
, list
);
1967 if (EQ (fontset
, Vdefault_fontset
))
1969 fontset
= Vdefault_fontset
;
1971 return (Fnreverse (list
));
1974 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
1975 doc
: /* Return a list of all defined fontset names. */)
1978 Lisp_Object fontset
, list
;
1982 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1984 fontset
= FONTSET_FROM_ID (i
);
1986 && BASE_FONTSET_P (fontset
))
1987 list
= Fcons (FONTSET_NAME (fontset
), list
);
1994 #ifdef FONTSET_DEBUG
1997 dump_fontset (fontset
)
1998 Lisp_Object fontset
;
2002 vec
= Fmake_vector (make_number (3), Qnil
);
2003 ASET (vec
, 0, FONTSET_ID (fontset
));
2005 if (BASE_FONTSET_P (fontset
))
2007 ASET (vec
, 1, FONTSET_NAME (fontset
));
2013 frame
= FONTSET_FRAME (fontset
);
2016 FRAME_PTR f
= XFRAME (frame
);
2018 if (FRAME_LIVE_P (f
))
2020 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), f
->name
));
2023 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
2025 if (!NILP (FONTSET_DEFAULT (fontset
)))
2026 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
2031 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
2032 doc
: /* Return a brief summary of all fontsets for debug use. */)
2038 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
2039 if (! NILP (AREF (Vfontset_table
, i
)))
2040 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
2041 return (Fnreverse (val
));
2043 #endif /* FONTSET_DEBUG */
2048 DEFSYM (Qfontset
, "fontset");
2049 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (9));
2050 DEFSYM (Qfontset_info
, "fontset-info");
2051 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2053 DEFSYM (Qprepend
, "prepend");
2054 DEFSYM (Qappend
, "append");
2055 DEFSYM (Qlatin
, "latin");
2057 Vcached_fontset_data
= Qnil
;
2058 staticpro (&Vcached_fontset_data
);
2060 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2061 staticpro (&Vfontset_table
);
2063 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2064 staticpro (&Vdefault_fontset
);
2065 FONTSET_ID (Vdefault_fontset
) = make_number (0);
2066 FONTSET_NAME (Vdefault_fontset
)
2067 = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
2068 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2069 next_fontset_id
= 1;
2071 auto_fontset_alist
= Qnil
;
2072 staticpro (&auto_fontset_alist
);
2074 DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist
,
2076 Alist of charsets vs the charsets to determine the preferred font encoding.
2077 Each element looks like (CHARSET . ENCODING-CHARSET),
2078 where ENCODING-CHARSET is a charset registered in the variable
2079 `font-encoding-alist' as ENCODING.
2081 When a text has a property `charset' and the value is CHARSET, a font
2082 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2083 Vfont_encoding_charset_alist
= Qnil
;
2085 DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent
,
2087 Char table of characters whose ascent values should be ignored.
2088 If an entry for a character is non-nil, the ascent value of the glyph
2089 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2091 This affects how a composite character which contains
2092 such a character is displayed on screen. */);
2093 Vuse_default_ascent
= Qnil
;
2095 DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition
,
2097 Char table of characters which are not composed relatively.
2098 If an entry for a character is non-nil, a composition sequence
2099 which contains that character is displayed so that
2100 the glyph of that character is put without considering
2101 an ascent and descent value of a previous character. */);
2102 Vignore_relative_composition
= Qnil
;
2104 DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist
,
2105 doc
: /* Alist of fontname vs list of the alternate fontnames.
2106 When a specified font name is not found, the corresponding
2107 alternate fontnames (if any) are tried instead. */);
2108 Valternate_fontname_alist
= Qnil
;
2110 DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist
,
2111 doc
: /* Alist of fontset names vs the aliases. */);
2112 Vfontset_alias_alist
= Fcons (Fcons (FONTSET_NAME (Vdefault_fontset
),
2113 build_string ("fontset-default")),
2116 DEFVAR_LISP ("vertical-centering-font-regexp",
2117 &Vvertical_centering_font_regexp
,
2118 doc
: /* *Regexp matching font names that require vertical centering on display.
2119 When a character is displayed with such fonts, the character is displayed
2120 at the vertical center of lines. */);
2121 Vvertical_centering_font_regexp
= Qnil
;
2123 DEFVAR_LISP ("otf-script-alist", &Votf_script_alist
,
2124 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2125 Votf_script_alist
= Qnil
;
2127 defsubr (&Squery_fontset
);
2128 defsubr (&Snew_fontset
);
2129 defsubr (&Sset_fontset_font
);
2130 defsubr (&Sfont_info
);
2131 defsubr (&Sinternal_char_font
);
2132 defsubr (&Sfontset_info
);
2133 defsubr (&Sfontset_font
);
2134 defsubr (&Sfontset_list
);
2135 #ifdef FONTSET_DEBUG
2136 defsubr (&Sfontset_list_all
);
2140 /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537
2141 (do not change this comment) */