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
,
612 FONT_DEF_SPEC (font_def
));
613 if (NILP (font_object
))
615 /* Record that the font is unsable. */
616 RFONT_DEF_SET_FACE (elt
, -1);
619 RFONT_DEF_SET_OBJECT (elt
, font_object
);
622 if (font_has_char (f
, font_object
, c
))
626 /* The following code makes Emacs to find a font for C by fairly
627 exhausitive search. But, that takes long time especially for
630 /* Try to find the different font maching with the current spec
632 font_def
= RFONT_DEF_FONT_DEF (elt
);
633 for (i
++; i
< ASIZE (vec
); i
++)
635 if (! EQ (RFONT_DEF_FONT_DEF (AREF (vec
, i
)), font_def
))
637 if (font_has_char (f
, RFONT_DEF_OBJECT (AREF (vec
, i
)), c
))
638 return AREF (vec
, i
);
640 /* Find an font-entity that support C. */
641 font_entity
= font_find_for_lface (f
, face
->lface
,
642 FONT_DEF_SPEC (font_def
), c
);
643 if (! NILP (font_entity
))
645 Lisp_Object rfont_def
, new_vec
;
648 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
650 RFONT_DEF_NEW (rfont_def
, font_def
);
651 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
652 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (elt
));
653 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
654 for (j
= 0; j
< i
; j
++)
655 ASET (new_vec
, j
, AREF (vec
, j
));
656 ASET (new_vec
, j
, rfont_def
);
657 for (j
++; j
< ASIZE (new_vec
); j
++)
658 ASET (new_vec
, j
, AREF (vec
, j
- 1));
666 FONTSET_SET (fontset
, make_number (c
), make_number (0));
672 fontset_font (fontset
, c
, face
, id
)
678 Lisp_Object rfont_def
;
679 Lisp_Object base_fontset
;
681 /* Try a font-group for C. */
682 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
683 if (VECTORP (rfont_def
))
685 if (EQ (rfont_def
, Qt
))
687 /* Try a fallback font-group. */
688 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
689 if (VECTORP (rfont_def
))
691 if (EQ (rfont_def
, Qt
))
694 base_fontset
= FONTSET_BASE (fontset
);
695 if (EQ (base_fontset
, Vdefault_fontset
))
698 /* Try a font-group for C of the default fontset. */
699 if (NILP (FONTSET_DEFAULT (fontset
)))
700 FONTSET_DEFAULT (fontset
)
701 = make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
);
702 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
703 if (VECTORP (rfont_def
))
705 /* Try a fallback font-group of the default fontset . */
706 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
707 if (! VECTORP (rfont_def
))
708 /* Remeber that we have no font for C. */
709 FONTSET_SET (fontset
, make_number (c
), Qt
);
714 /* Return a newly created fontset with NAME. If BASE is nil, make a
715 base fontset. Otherwise make a realized fontset whose base is
719 make_fontset (frame
, name
, base
)
720 Lisp_Object frame
, name
, base
;
723 int size
= ASIZE (Vfontset_table
);
724 int id
= next_fontset_id
;
726 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
727 the next available fontset ID. So it is expected that this loop
728 terminates quickly. In addition, as the last element of
729 Vfontset_table is always nil, we don't have to check the range of
731 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
734 Vfontset_table
= larger_vector (Vfontset_table
, size
+ 32, Qnil
);
736 fontset
= Fmake_char_table (Qfontset
, Qnil
);
738 FONTSET_ID (fontset
) = make_number (id
);
741 FONTSET_NAME (fontset
) = name
;
745 FONTSET_NAME (fontset
) = Qnil
;
746 FONTSET_FRAME (fontset
) = frame
;
747 FONTSET_BASE (fontset
) = base
;
750 ASET (Vfontset_table
, id
, fontset
);
751 next_fontset_id
= id
+ 1;
756 /* Set the ASCII font of the default fontset to FONTNAME if that is
759 set_default_ascii_font (fontname
)
760 Lisp_Object fontname
;
762 if (! STRINGP (FONTSET_ASCII (Vdefault_fontset
)))
764 int id
= fs_query_fontset (fontname
, 2);
767 fontname
= FONTSET_ASCII (FONTSET_FROM_ID (id
));
768 FONTSET_ASCII (Vdefault_fontset
)= fontname
;
773 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
775 /* Return the name of the fontset who has ID. */
783 fontset
= FONTSET_FROM_ID (id
);
784 return FONTSET_NAME (fontset
);
788 /* Return the ASCII font name of the fontset who has ID. */
794 Lisp_Object fontset
, elt
;
796 fontset
= FONTSET_FROM_ID (id
);
797 elt
= FONTSET_ASCII (fontset
);
804 free_realized_fontset (f
, fontset
)
811 for (tail
= FONTSET_OBJLIST (fontset
); CONSP (tail
); tail
= XCDR (tail
))
813 xassert (FONT_OBJECT_P (XCAR (tail
)));
814 font_close_object (f
, XCAR (tail
));
818 /* Free fontset of FACE defined on frame F. Called from
819 free_realized_face. */
822 free_face_fontset (f
, face
)
828 fontset
= FONTSET_FROM_ID (face
->fontset
);
831 xassert (! BASE_FONTSET_P (fontset
));
832 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
833 free_realized_fontset (f
, fontset
);
834 ASET (Vfontset_table
, face
->fontset
, Qnil
);
835 if (face
->fontset
< next_fontset_id
)
836 next_fontset_id
= face
->fontset
;
837 if (! NILP (FONTSET_DEFAULT (fontset
)))
839 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
841 fontset
= AREF (Vfontset_table
, id
);
842 xassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
843 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
844 free_realized_fontset (f
, fontset
);
845 ASET (Vfontset_table
, id
, Qnil
);
846 if (id
< next_fontset_id
)
847 next_fontset_id
= face
->fontset
;
853 /* Return 1 if FACE is suitable for displaying character C.
854 Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
855 when C is not an ASCII character. */
858 face_suitable_for_char_p (face
, c
)
862 Lisp_Object fontset
, rfont_def
;
864 fontset
= FONTSET_FROM_ID (face
->fontset
);
865 rfont_def
= fontset_font (fontset
, c
, NULL
, -1);
866 return (VECTORP (rfont_def
)
867 && INTEGERP (RFONT_DEF_FACE (rfont_def
))
868 && face
->id
== XINT (RFONT_DEF_FACE (rfont_def
)));
872 /* Return ID of face suitable for displaying character C on frame F.
873 FACE must be reazlied for ASCII characters in advance. Called from
874 the macro FACE_FOR_CHAR. */
877 face_for_char (f
, face
, c
, pos
, object
)
883 Lisp_Object fontset
, rfont_def
;
887 if (ASCII_CHAR_P (c
))
888 return face
->ascii_face
->id
;
890 xassert (fontset_id_valid_p (face
->fontset
));
891 fontset
= FONTSET_FROM_ID (face
->fontset
);
892 xassert (!BASE_FONTSET_P (fontset
));
899 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
902 else if (CHARSETP (charset
))
906 val
= assoc_no_quit (charset
, Vfont_encoding_charset_alist
);
907 if (CONSP (val
) && CHARSETP (XCDR (val
)))
908 charset
= XCDR (val
);
909 id
= XINT (CHARSET_SYMBOL_ID (charset
));
914 struct font
*font
= face
->ascii_face
->font
;
916 if (font
&& font
->driver
->encode_char (font
, c
) != FONT_INVALID_CODE
)
917 return face
->ascii_face
->id
;
919 if (font
&& font
->driver
->encode_char (font
, c
) != FONT_INVALID_CODE
)
923 rfont_def
= fontset_font (fontset
, c
, face
, id
);
924 if (VECTORP (rfont_def
))
926 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
927 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
930 Lisp_Object font_object
;
932 font_object
= RFONT_DEF_OBJECT (rfont_def
);
933 face_id
= face_for_font (f
, font_object
, face
);
934 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
939 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
940 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
943 face_id
= face_for_font (f
, Qnil
, face
);
944 FONTSET_NOFONT_FACE (fontset
) = make_number (face_id
);
947 xassert (face_id
>= 0);
952 /* Make a realized fontset for ASCII face FACE on frame F from the
953 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
954 default fontset as the base. Value is the id of the new fontset.
955 Called from realize_x_face. */
958 make_fontset_for_ascii_face (f
, base_fontset_id
, face
)
963 Lisp_Object base_fontset
, fontset
, frame
;
965 XSETFRAME (frame
, f
);
966 if (base_fontset_id
>= 0)
968 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
969 if (!BASE_FONTSET_P (base_fontset
))
970 base_fontset
= FONTSET_BASE (base_fontset
);
971 if (! BASE_FONTSET_P (base_fontset
))
975 base_fontset
= Vdefault_fontset
;
977 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
978 return XINT (FONTSET_ID (fontset
));
983 /* Cache data used by fontset_pattern_regexp. The car part is a
984 pattern string containing at least one wild card, the cdr part is
985 the corresponding regular expression. */
986 static Lisp_Object Vcached_fontset_data
;
988 #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data)))
989 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
991 /* If fontset name PATTERN contains any wild card, return regular
992 expression corresponding to PATTERN. */
995 fontset_pattern_regexp (pattern
)
998 if (!index ((char *) SDATA (pattern
), '*')
999 && !index ((char *) SDATA (pattern
), '?'))
1000 /* PATTERN does not contain any wild cards. */
1003 if (!CONSP (Vcached_fontset_data
)
1004 || strcmp ((char *) SDATA (pattern
), CACHED_FONTSET_NAME
))
1006 /* We must at first update the cached data. */
1007 unsigned char *regex
, *p0
, *p1
;
1008 int ndashes
= 0, nstars
= 0;
1010 for (p0
= SDATA (pattern
); *p0
; p0
++)
1014 else if (*p0
== '*')
1018 /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise
1019 we convert "*" to "[^-]*" which is much faster in regular
1020 expression matching. */
1022 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 2 * nstars
+ 1);
1024 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 5 * nstars
+ 1);
1027 for (p0
= SDATA (pattern
); *p0
; p0
++)
1034 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1037 else if (*p0
== '?')
1045 Vcached_fontset_data
= Fcons (build_string ((char *) SDATA (pattern
)),
1046 build_string ((char *) regex
));
1049 return CACHED_FONTSET_REGEX
;
1052 /* Return ID of the base fontset named NAME. If there's no such
1053 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1054 0: pattern containing '*' and '?' as wildcards
1055 1: regular expression
1056 2: literal fontset name
1060 fs_query_fontset (name
, name_pattern
)
1067 name
= Fdowncase (name
);
1068 if (name_pattern
!= 1)
1070 tem
= Frassoc (name
, Vfontset_alias_alist
);
1072 tem
= Fassoc (name
, Vfontset_alias_alist
);
1073 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1075 else if (name_pattern
== 0)
1077 tem
= fontset_pattern_regexp (name
);
1086 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1088 Lisp_Object fontset
, this_name
;
1090 fontset
= FONTSET_FROM_ID (i
);
1092 || !BASE_FONTSET_P (fontset
))
1095 this_name
= FONTSET_NAME (fontset
);
1096 if (name_pattern
== 1
1097 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1098 : !xstrcasecmp (SDATA (name
), SDATA (this_name
)))
1105 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1106 doc
: /* Return the name of a fontset that matches PATTERN.
1107 The value is nil if there is no matching fontset.
1108 PATTERN can contain `*' or `?' as a wildcard
1109 just as X font name matching algorithm allows.
1110 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1112 Lisp_Object pattern
, regexpp
;
1114 Lisp_Object fontset
;
1117 (*check_window_system_func
) ();
1119 CHECK_STRING (pattern
);
1121 if (SCHARS (pattern
) == 0)
1124 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1128 fontset
= FONTSET_FROM_ID (id
);
1129 return FONTSET_NAME (fontset
);
1132 /* Return a list of base fontset names matching PATTERN on frame F. */
1135 list_fontsets (f
, pattern
, size
)
1137 Lisp_Object pattern
;
1140 Lisp_Object frame
, regexp
, val
;
1143 XSETFRAME (frame
, f
);
1145 regexp
= fontset_pattern_regexp (pattern
);
1148 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1150 Lisp_Object fontset
, name
;
1152 fontset
= FONTSET_FROM_ID (id
);
1154 || !BASE_FONTSET_P (fontset
)
1155 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1157 name
= FONTSET_NAME (fontset
);
1159 if (STRINGP (regexp
)
1160 ? (fast_string_match (regexp
, name
) < 0)
1161 : strcmp ((char *) SDATA (pattern
), (char *) SDATA (name
)))
1164 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1171 /* Free all realized fontsets whose base fontset is BASE. */
1174 free_realized_fontsets (base
)
1180 /* For the moment, this doesn't work because free_realized_face
1181 doesn't remove FACE from a cache. Until we find a solution, we
1182 suppress this code, and simply use Fclear_face_cache even though
1183 that is not efficient. */
1185 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1187 Lisp_Object
this = AREF (Vfontset_table
, id
);
1189 if (EQ (FONTSET_BASE (this), base
))
1193 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1196 FRAME_PTR f
= XFRAME (FONTSET_FRAME (this));
1197 int face_id
= XINT (XCDR (XCAR (tail
)));
1198 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1200 /* Face THIS itself is also freed by the following call. */
1201 free_realized_face (f
, face
);
1207 /* But, we don't have to call Fclear_face_cache if no fontset has
1208 been realized from BASE. */
1209 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1211 Lisp_Object
this = AREF (Vfontset_table
, id
);
1213 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1215 Fclear_face_cache (Qt
);
1223 /* Check validity of NAME as a fontset name and return the
1224 corresponding fontset. If not valid, signal an error.
1225 If NAME is t, return Vdefault_fontset. */
1228 check_fontset_name (name
)
1234 return Vdefault_fontset
;
1236 CHECK_STRING (name
);
1237 /* First try NAME as literal. */
1238 id
= fs_query_fontset (name
, 2);
1240 /* For backward compatibility, try again NAME as pattern. */
1241 id
= fs_query_fontset (name
, 0);
1243 error ("Fontset `%s' does not exist", SDATA (name
));
1244 return FONTSET_FROM_ID (id
);
1248 accumulate_script_ranges (arg
, range
, val
)
1249 Lisp_Object arg
, range
, val
;
1251 if (EQ (XCAR (arg
), val
))
1254 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1256 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1261 /* Return an ASCII font name generated from fontset name NAME and
1262 font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */
1264 static INLINE Lisp_Object
1265 generate_ascii_font_name (name
, ascii_spec
)
1266 Lisp_Object name
, ascii_spec
;
1268 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1272 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1273 error ("Not an XLFD font name: %s", SDATA (name
));
1274 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1275 if (! NILP (AREF (ascii_spec
, i
)))
1276 ASET (font_spec
, i
, AREF (ascii_spec
, i
));
1277 i
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1279 error ("Not an XLFD font name: %s", SDATA (name
));
1280 return make_unibyte_string (xlfd
, i
);
1283 /* Variables referred in set_fontset_font. They are set before
1284 map_charset_chars is called in Fset_fontset_font. */
1285 static Lisp_Object font_def_arg
, add_arg
;
1286 static int from_arg
, to_arg
;
1288 /* Callback function for map_charset_chars in Fset_fontset_font. In
1289 FONTSET, set font_def_arg in a fashion specified by add_arg for
1290 characters in RANGE while ignoring the range between from_arg and
1294 set_fontset_font (fontset
, range
)
1295 Lisp_Object fontset
, range
;
1297 if (from_arg
< to_arg
)
1299 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1301 if (from
< from_arg
)
1307 range2
= Fcons (make_number (to_arg
), XCDR (range
));
1308 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1312 range
= Fcons (XCAR (range
), make_number (from_arg
));
1314 else if (to
<= to_arg
)
1319 range
= Fcons (make_number (to_arg
), XCDR (range
));
1322 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1325 extern Lisp_Object QCfamily
, QCregistry
;
1327 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1329 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1331 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1332 In that case, use FONT-SPEC for all characters in the range FROM and
1335 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1336 all characters that belong to the script.
1338 TARGET may be a charset. In that case, use FONT-SPEC for all
1339 characters in the charset.
1341 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1342 that no FONT-SPEC is specified.
1344 FONT-SPEC may one of these:
1345 * A font-spec object made by the function `font-spec' (which see).
1346 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1347 REGISTRY is a font registry name. FAMILY may contain foundry
1348 name, and REGISTRY may contain encoding name.
1349 * A font name string.
1350 * nil, which explicitly specifies that there's no font for TARGET.
1352 Optional 4th argument FRAME, if non-nil, is a frame. This argument is
1353 kept for backward compatibility and has no meaning.
1355 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1356 to the font specifications for TARGET previously set. If it is
1357 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1358 appended. By default, FONT-SPEC overrides the previous settings. */)
1359 (name
, target
, font_spec
, frame
, add
)
1360 Lisp_Object name
, target
, font_spec
, frame
, add
;
1362 Lisp_Object fontset
;
1363 Lisp_Object font_def
, registry
, family
;
1364 Lisp_Object range_list
;
1365 struct charset
*charset
= NULL
;
1367 fontset
= check_fontset_name (name
);
1369 /* The arg FRAME is kept for backward compatibility. We only check
1372 CHECK_LIVE_FRAME (frame
);
1374 if (CONSP (font_spec
))
1376 Lisp_Object spec
= Ffont_spec (0, NULL
);
1378 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1381 else if (STRINGP (font_spec
))
1383 Lisp_Object args
[2];
1384 extern Lisp_Object QCname
;
1387 args
[1] = font_spec
;
1388 font_spec
= Ffont_spec (2, args
);
1390 else if (! NILP (font_spec
) && ! FONT_SPEC_P (font_spec
))
1391 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1393 if (! NILP (font_spec
))
1395 Lisp_Object encoding
, repertory
;
1397 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1398 if (! NILP (family
) )
1399 family
= SYMBOL_NAME (family
);
1400 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1401 if (! NILP (registry
))
1402 registry
= Fdowncase (SYMBOL_NAME (registry
));
1403 encoding
= find_font_encoding (concat3 (family
, build_string ("-"),
1405 if (NILP (encoding
))
1408 if (SYMBOLP (encoding
))
1410 CHECK_CHARSET (encoding
);
1411 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1415 repertory
= XCDR (encoding
);
1416 encoding
= XCAR (encoding
);
1417 CHECK_CHARSET (encoding
);
1418 encoding
= CHARSET_SYMBOL_ID (encoding
);
1419 if (! NILP (repertory
) && SYMBOLP (repertory
))
1421 CHECK_CHARSET (repertory
);
1422 repertory
= CHARSET_SYMBOL_ID (repertory
);
1425 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1430 if (CHARACTERP (target
))
1431 range_list
= Fcons (Fcons (target
, target
), Qnil
);
1432 else if (CONSP (target
))
1434 Lisp_Object from
, to
;
1436 from
= Fcar (target
);
1438 CHECK_CHARACTER (from
);
1439 CHECK_CHARACTER (to
);
1440 range_list
= Fcons (target
, Qnil
);
1442 else if (SYMBOLP (target
) && !NILP (target
))
1444 Lisp_Object script_list
;
1448 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1449 if (! NILP (Fmemq (target
, script_list
)))
1451 val
= Fcons (target
, Qnil
);
1452 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1454 range_list
= XCDR (val
);
1455 if (EQ (target
, Qlatin
) && NILP (FONTSET_ASCII (fontset
)))
1457 if (VECTORP (font_spec
))
1458 val
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1462 FONTSET_ASCII (fontset
) = val
;
1465 if (CHARSETP (target
))
1467 if (EQ (target
, Qascii
) && NILP (FONTSET_ASCII (fontset
)))
1469 if (VECTORP (font_spec
))
1470 font_spec
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1472 FONTSET_ASCII (fontset
) = font_spec
;
1473 range_list
= Fcons (Fcons (make_number (0), make_number (127)),
1478 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1481 else if (NILP (range_list
))
1482 error ("Invalid script or charset name: %s",
1483 SDATA (SYMBOL_NAME (target
)));
1485 else if (NILP (target
))
1486 range_list
= Fcons (Qnil
, Qnil
);
1488 error ("Invalid target for setting a font");
1493 font_def_arg
= font_def
;
1495 if (NILP (range_list
))
1496 from_arg
= to_arg
= 0;
1498 from_arg
= XINT (XCAR (XCAR (range_list
))),
1499 to_arg
= XINT (XCDR (XCAR (range_list
)));
1501 map_charset_chars (set_fontset_font
, Qnil
, fontset
, charset
,
1502 CHARSET_MIN_CODE (charset
),
1503 CHARSET_MAX_CODE (charset
));
1505 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1506 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1508 /* Free all realized fontsets whose base is FONTSET. This way, the
1509 specified character(s) are surely redisplayed by a correct
1511 free_realized_fontsets (fontset
);
1517 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1518 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1520 FONTLIST is an alist of scripts vs the corresponding font specification list.
1521 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1522 character of SCRIPT is displayed by a font that matches one of
1525 SCRIPT is a symbol that appears in the first extra slot of the
1526 char-table `char-script-table'.
1528 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1529 `set-fontset-font' for the meaning. */)
1531 Lisp_Object name
, fontlist
;
1533 Lisp_Object fontset
;
1536 CHECK_STRING (name
);
1537 CHECK_LIST (fontlist
);
1539 name
= Fdowncase (name
);
1540 id
= fs_query_fontset (name
, 0);
1543 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1544 Lisp_Object short_name
;
1548 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1549 error ("Fontset name must be in XLFD format");
1550 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1551 if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1552 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1553 error ("Registry field of fontset name must be \"fontset-*\"");
1554 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1555 Vfontset_alias_alist
);
1556 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1557 fontset
= make_fontset (Qnil
, name
, Qnil
);
1558 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1560 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1561 FONTSET_ASCII (fontset
) = make_unibyte_string (xlfd
, len
);
1565 fontset
= FONTSET_FROM_ID (id
);;
1566 free_realized_fontsets (fontset
);
1567 Fset_char_table_range (fontset
, Qt
, Qnil
);
1570 for (; ! NILP (fontlist
); fontlist
= Fcdr (fontlist
))
1572 Lisp_Object elt
, script
;
1574 elt
= Fcar (fontlist
);
1575 script
= Fcar (elt
);
1577 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1578 for (; CONSP (elt
); elt
= XCDR (elt
))
1579 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1581 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1587 /* Alist of automatically created fontsets. Each element is a cons
1588 (FONT-SPEC . FONTSET-ID). */
1589 static Lisp_Object auto_fontset_alist
;
1592 fontset_from_font (font_object
)
1593 Lisp_Object font_object
;
1595 Lisp_Object font_name
= font_get_name (font_object
);
1596 Lisp_Object font_spec
= Fcopy_font_spec (font_object
);
1597 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1601 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1603 return XINT (FONTSET_ID (XCDR (val
)));
1604 if (NILP (auto_fontset_alist
))
1605 alias
= intern ("fontset-startup");
1609 int len
= XINT (Flength (auto_fontset_alist
));
1611 sprintf (temp
, "fontset-auto%d", len
);
1612 alias
= intern (temp
);
1614 fontset_spec
= Fcopy_font_spec (font_spec
);
1615 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1616 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1619 fontset
= make_fontset (Qnil
, name
, Qnil
);
1620 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1621 Vfontset_alias_alist
);
1622 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1623 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1624 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1625 FONTSET_ASCII (fontset
) = font_name
;
1626 ASET (font_spec
, FONT_FOUNDRY_INDEX
, Qnil
);
1627 ASET (font_spec
, FONT_ADSTYLE_INDEX
, Qnil
);
1628 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1629 ASET (font_spec
, i
, Qnil
);
1630 Fset_fontset_font (name
, Qlatin
, font_spec
, Qnil
, Qnil
);
1631 font_spec
= Fcopy_font_spec (font_spec
);
1632 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso10646_1
);
1633 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1634 return XINT (FONTSET_ID (fontset
));
1637 /* Return a cons (FONT-NAME . GLYPH-CODE).
1638 FONT-NAME is the font name for the character at POSITION in the current
1639 buffer. This is computed from all the text properties and overlays
1640 that apply to POSITION. POSTION may be nil, in which case,
1641 FONT-NAME is the font name for display the character CH with the
1644 GLYPH-CODE is the glyph code in the font to use for the character.
1646 If the 2nd optional arg CH is non-nil, it is a character to check
1647 the font instead of the character at POSITION.
1649 It returns nil in the following cases:
1651 (1) The window system doesn't have a font for the character (thus
1652 it is displayed by an empty box).
1654 (2) The character code is invalid.
1656 (3) If POSITION is not nil, and the current buffer is not displayed
1659 In addition, the returned font name may not take into account of
1660 such redisplay engine hooks as what used in jit-lock-mode if
1661 POSITION is currently not visible. */
1664 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1665 doc
: /* For internal use only. */)
1667 Lisp_Object position
, ch
;
1669 EMACS_INT pos
, pos_byte
, dummy
;
1676 if (NILP (position
))
1678 CHECK_CHARACTER (ch
);
1680 f
= XFRAME (selected_frame
);
1681 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
1687 Lisp_Object window
, charset
;
1690 CHECK_NUMBER_COERCE_MARKER (position
);
1691 pos
= XINT (position
);
1692 if (pos
< BEGV
|| pos
>= ZV
)
1693 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1694 pos_byte
= CHAR_TO_BYTE (pos
);
1696 c
= FETCH_CHAR (pos_byte
);
1702 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1705 w
= XWINDOW (window
);
1706 f
= XFRAME (w
->frame
);
1707 face_id
= face_at_buffer_position (w
, pos
, -1, -1, &dummy
, pos
+ 100, 0);
1708 charset
= Fget_char_property (position
, Qcharset
, Qnil
);
1709 if (CHARSETP (charset
))
1710 cs_id
= XINT (CHARSET_SYMBOL_ID (charset
));
1714 if (! CHAR_VALID_P (c
, 0))
1716 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1717 face
= FACE_FROM_ID (f
, face_id
);
1720 struct font
*font
= face
->font
;
1721 unsigned code
= font
->driver
->encode_char (font
, c
);
1722 Lisp_Object fontname
= font
->props
[FONT_NAME_INDEX
];
1723 /* Assignment to EMACS_INT stops GCC whining about limited range
1725 EMACS_INT cod
= code
;
1727 if (code
== FONT_INVALID_CODE
)
1729 if (cod
<= MOST_POSITIVE_FIXNUM
)
1730 return Fcons (fontname
, make_number (code
));
1731 return Fcons (fontname
, Fcons (make_number (code
>> 16),
1732 make_number (code
& 0xFFFF)));
1738 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1739 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1740 The value is a char-table whose elements have this form:
1742 ((FONT-PATTERN OPENED-FONT ...) ...)
1744 FONT-PATTERN is a vector:
1746 [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
1748 or a string of font name pattern.
1750 OPENED-FONT is a name of a font actually opened.
1752 The char-table has one extra slot. The value is a char-table
1753 containing the information about the derived fonts from the default
1754 fontset. The format is the same as above. */)
1756 Lisp_Object fontset
, frame
;
1759 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1760 Lisp_Object val
, elt
;
1763 (*check_window_system_func
) ();
1765 fontset
= check_fontset_name (fontset
);
1768 frame
= selected_frame
;
1769 CHECK_LIVE_FRAME (frame
);
1772 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1773 in the table `realized'. */
1774 realized
[0] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1775 * ASIZE (Vfontset_table
));
1776 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1778 elt
= FONTSET_FROM_ID (i
);
1780 && EQ (FONTSET_BASE (elt
), fontset
)
1781 && EQ (FONTSET_FRAME (elt
), frame
))
1782 realized
[0][j
++] = elt
;
1784 realized
[0][j
] = Qnil
;
1786 realized
[1] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1787 * ASIZE (Vfontset_table
));
1788 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1790 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1792 realized
[1][j
++] = elt
;
1794 realized
[1][j
] = Qnil
;
1796 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1797 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1798 XCHAR_TABLE (tables
[0])->extras
[0] = tables
[1];
1799 fontsets
[0] = fontset
;
1800 fontsets
[1] = Vdefault_fontset
;
1802 /* Accumulate information of the fontset in TABLE. The format of
1803 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1804 for (k
= 0; k
<= 1; k
++)
1806 for (c
= 0; c
<= MAX_CHAR
; )
1810 if (c
<= MAX_5_BYTE_CHAR
)
1812 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1813 if (to
> MAX_5_BYTE_CHAR
)
1814 to
= MAX_5_BYTE_CHAR
;
1818 val
= FONTSET_FALLBACK (fontsets
[k
]);
1825 /* At first, set ALIST to ((FONT-SPEC) ...). */
1826 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1827 if (! NILP (AREF (val
, i
)))
1828 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1830 alist
= Fnreverse (alist
);
1832 /* Then store opend font names to cdr of each elements. */
1833 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1835 if (c
<= MAX_5_BYTE_CHAR
)
1836 val
= FONTSET_REF (realized
[k
][i
], c
);
1838 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1839 if (! VECTORP (val
))
1841 /* VAL: [int ? [FACE-ID FONT-DEF FONT-OBJECT int] ... ] */
1842 for (j
= 2; j
< ASIZE (val
); j
++)
1844 elt
= AREF (val
, j
);
1845 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1847 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1848 Lisp_Object slot
, name
;
1850 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1851 name
= AREF (font_object
, FONT_NAME_INDEX
);
1852 if (NILP (Fmember (name
, XCDR (slot
))))
1853 nconc2 (slot
, Fcons (name
, Qnil
));
1858 /* Store ALIST in TBL for characters C..TO. */
1859 if (c
<= MAX_5_BYTE_CHAR
)
1860 char_table_set_range (tables
[k
], c
, to
, alist
);
1862 XCHAR_TABLE (tables
[k
])->defalt
= alist
;
1864 /* At last, change each elements to font names. */
1865 for (; CONSP (alist
); alist
= XCDR (alist
))
1868 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
1879 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
1880 doc
: /* Return a font name pattern for character CH in fontset NAME.
1881 If NAME is t, find a pattern in the default fontset.
1883 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
1884 family name and REGISTRY is a font registry name. This is actually
1885 the first font name pattern for CH in the fontset or in the default
1888 If the 2nd optional arg ALL is non-nil, return a list of all font name
1891 Lisp_Object name
, ch
, all
;
1894 Lisp_Object fontset
, elt
, list
, repertory
, val
;
1897 fontset
= check_fontset_name (name
);
1899 CHECK_CHARACTER (ch
);
1904 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
1905 i
++, elt
= FONTSET_FALLBACK (fontset
))
1907 for (j
= 0; j
< ASIZE (elt
); j
++)
1909 val
= AREF (elt
, j
);
1910 repertory
= AREF (val
, 1);
1911 if (INTEGERP (repertory
))
1913 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
1915 if (! CHAR_CHARSET_P (c
, charset
))
1918 else if (CHAR_TABLE_P (repertory
))
1920 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
1923 val
= AREF (val
, 0);
1924 val
= Fcons (AREF (val
, 0), AREF (val
, 5));
1927 list
= Fcons (val
, list
);
1929 if (EQ (fontset
, Vdefault_fontset
))
1931 fontset
= Vdefault_fontset
;
1933 return (Fnreverse (list
));
1936 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
1937 doc
: /* Return a list of all defined fontset names. */)
1940 Lisp_Object fontset
, list
;
1944 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1946 fontset
= FONTSET_FROM_ID (i
);
1948 && BASE_FONTSET_P (fontset
))
1949 list
= Fcons (FONTSET_NAME (fontset
), list
);
1956 #ifdef FONTSET_DEBUG
1959 dump_fontset (fontset
)
1960 Lisp_Object fontset
;
1964 vec
= Fmake_vector (make_number (3), Qnil
);
1965 ASET (vec
, 0, FONTSET_ID (fontset
));
1967 if (BASE_FONTSET_P (fontset
))
1969 ASET (vec
, 1, FONTSET_NAME (fontset
));
1975 frame
= FONTSET_FRAME (fontset
);
1978 FRAME_PTR f
= XFRAME (frame
);
1980 if (FRAME_LIVE_P (f
))
1982 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), f
->name
));
1985 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
1987 if (!NILP (FONTSET_DEFAULT (fontset
)))
1988 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
1993 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
1994 doc
: /* Return a brief summary of all fontsets for debug use. */)
2000 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
2001 if (! NILP (AREF (Vfontset_table
, i
)))
2002 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
2003 return (Fnreverse (val
));
2005 #endif /* FONTSET_DEBUG */
2010 DEFSYM (Qfontset
, "fontset");
2011 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (9));
2012 DEFSYM (Qfontset_info
, "fontset-info");
2013 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2015 DEFSYM (Qprepend
, "prepend");
2016 DEFSYM (Qappend
, "append");
2017 DEFSYM (Qlatin
, "latin");
2019 Vcached_fontset_data
= Qnil
;
2020 staticpro (&Vcached_fontset_data
);
2022 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2023 staticpro (&Vfontset_table
);
2025 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2026 staticpro (&Vdefault_fontset
);
2027 FONTSET_ID (Vdefault_fontset
) = make_number (0);
2028 FONTSET_NAME (Vdefault_fontset
)
2029 = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
2030 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2031 next_fontset_id
= 1;
2033 auto_fontset_alist
= Qnil
;
2034 staticpro (&auto_fontset_alist
);
2036 DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist
,
2038 Alist of charsets vs the charsets to determine the preferred font encoding.
2039 Each element looks like (CHARSET . ENCODING-CHARSET),
2040 where ENCODING-CHARSET is a charset registered in the variable
2041 `font-encoding-alist' as ENCODING.
2043 When a text has a property `charset' and the value is CHARSET, a font
2044 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2045 Vfont_encoding_charset_alist
= Qnil
;
2047 DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent
,
2049 Char table of characters whose ascent values should be ignored.
2050 If an entry for a character is non-nil, the ascent value of the glyph
2051 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2053 This affects how a composite character which contains
2054 such a character is displayed on screen. */);
2055 Vuse_default_ascent
= Qnil
;
2057 DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition
,
2059 Char table of characters which are not composed relatively.
2060 If an entry for a character is non-nil, a composition sequence
2061 which contains that character is displayed so that
2062 the glyph of that character is put without considering
2063 an ascent and descent value of a previous character. */);
2064 Vignore_relative_composition
= Qnil
;
2066 DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist
,
2067 doc
: /* Alist of fontname vs list of the alternate fontnames.
2068 When a specified font name is not found, the corresponding
2069 alternate fontnames (if any) are tried instead. */);
2070 Valternate_fontname_alist
= Qnil
;
2072 DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist
,
2073 doc
: /* Alist of fontset names vs the aliases. */);
2074 Vfontset_alias_alist
= Fcons (Fcons (FONTSET_NAME (Vdefault_fontset
),
2075 build_string ("fontset-default")),
2078 DEFVAR_LISP ("vertical-centering-font-regexp",
2079 &Vvertical_centering_font_regexp
,
2080 doc
: /* *Regexp matching font names that require vertical centering on display.
2081 When a character is displayed with such fonts, the character is displayed
2082 at the vertical center of lines. */);
2083 Vvertical_centering_font_regexp
= Qnil
;
2085 DEFVAR_LISP ("otf-script-alist", &Votf_script_alist
,
2086 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2087 Votf_script_alist
= Qnil
;
2089 defsubr (&Squery_fontset
);
2090 defsubr (&Snew_fontset
);
2091 defsubr (&Sset_fontset_font
);
2092 defsubr (&Sinternal_char_font
);
2093 defsubr (&Sfontset_info
);
2094 defsubr (&Sfontset_font
);
2095 defsubr (&Sfontset_list
);
2096 #ifdef FONTSET_DEBUG
2097 defsubr (&Sfontset_list_all
);
2101 /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537
2102 (do not change this comment) */