2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
6 National Institute of Advanced Industrial Science and Technology (AIST)
7 Registration Number H14PRO021
8 Copyright (C) 2003, 2006
9 National Institute of Advanced Industrial Science and Technology (AIST)
10 Registration Number H13PRO009
12 This file is part of GNU Emacs.
14 GNU Emacs is free software: you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation, either version 3 of the License, or
17 (at your option) any later version.
19 GNU Emacs is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 /* #define FONTSET_DEBUG */
33 #include "blockinput.h"
35 #include "character.h"
40 #include "dispextern.h"
41 #include "intervals.h"
53 #include "termhooks.h"
59 #define xassert(X) do {if (!(X)) abort ();} while (0)
62 #else /* not FONTSET_DEBUG */
63 #define xassert(X) (void) 0
64 #endif /* not FONTSET_DEBUG */
66 EXFUN (Fclear_face_cache
, 1);
70 A fontset is a collection of font related information to give
71 similar appearance (style, etc) of characters. A fontset has two
72 roles. One is to use for the frame parameter `font' as if it is an
73 ASCII font. In that case, Emacs uses the font specified for
74 `ascii' script for the frame's default font.
76 Another role, the more important one, is to provide information
77 about which font to use for each non-ASCII character.
79 There are two kinds of fontsets; base and realized. A base fontset
80 is created by `new-fontset' from Emacs Lisp explicitly. A realized
81 fontset is created implicitly when a face is realized for ASCII
82 characters. A face is also realized for non-ASCII characters based
83 on an ASCII face. All of non-ASCII faces based on the same ASCII
84 face share the same realized fontset.
86 A fontset object is implemented by a char-table whose default value
87 and parent are always nil.
89 An element of a base fontset is a vector of FONT-DEFs which itself
90 is a vector [ FONT-SPEC ENCODING REPERTORY ].
92 An element of a realized fontset is nil, t, or a vector of this form:
94 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
95 RFONT-DEF0 RFONT-DEF1 ... ]
97 RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
99 [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
101 RFONT-DEFn are automatically reordered by the current charset
104 The value nil means that we have not yet generated the above vector
105 from the base of the fontset.
107 The value t means that no font is available for the corresponding
111 A fontset has 9 extra slots.
113 The 1st slot: the ID number of the fontset
116 base: the name of the fontset
121 realized: the base fontset
125 realized: the frame that the fontset belongs to
128 base: the font name for ASCII characters
133 realized: the ID number of a face to use for characters that
134 has no font in a realized fontset.
138 realized: Alist of font index vs the corresponding repertory
143 realized: If the base is not the default fontset, a fontset
144 realized from the default fontset, else nil.
147 base: Same as element value (but for fallback fonts).
150 All fontsets are recorded in the vector Vfontset_table.
155 There's a special base fontset named `default fontset' which
156 defines the default font specifications. When a base fontset
157 doesn't specify a font for a specific character, the corresponding
158 value in the default fontset is used.
160 The parent of a realized fontset created for such a face that has
161 no fontset is the default fontset.
164 These structures are hidden from the other codes than this file.
165 The other codes handle fontsets only by their ID numbers. They
166 usually use the variable name `fontset' for IDs. But, in this
167 file, we always use varialbe name `id' for IDs, and name `fontset'
168 for an actual fontset object, i.e., char-table.
172 /********** VARIABLES and FUNCTION PROTOTYPES **********/
174 extern Lisp_Object Qfont
;
175 static Lisp_Object Qfontset
;
176 static Lisp_Object Qfontset_info
;
177 static Lisp_Object Qprepend
, Qappend
;
178 static Lisp_Object Qlatin
;
180 /* Vector containing all fontsets. */
181 static Lisp_Object Vfontset_table
;
183 /* Next possibly free fontset ID. Usually this keeps the minimum
184 fontset ID not yet used. */
185 static int next_fontset_id
;
187 /* The default fontset. This gives default FAMILY and REGISTRY of
188 font for each character. */
189 static Lisp_Object Vdefault_fontset
;
191 Lisp_Object Vfont_encoding_charset_alist
;
192 Lisp_Object Vuse_default_ascent
;
193 Lisp_Object Vignore_relative_composition
;
194 Lisp_Object Valternate_fontname_alist
;
195 Lisp_Object Vfontset_alias_alist
;
196 Lisp_Object Vvertical_centering_font_regexp
;
197 Lisp_Object Votf_script_alist
;
199 /* Check if any window system is used now. */
200 void (*check_window_system_func
) P_ ((void));
203 /* Prototype declarations for static functions. */
204 static Lisp_Object fontset_add
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
206 static Lisp_Object fontset_find_font
P_ ((Lisp_Object
, int, struct face
*,
208 static void reorder_font_vector
P_ ((Lisp_Object
, struct font
*));
209 static Lisp_Object fontset_font
P_ ((Lisp_Object
, int, struct face
*, int));
210 static Lisp_Object make_fontset
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
211 static Lisp_Object fontset_pattern_regexp
P_ ((Lisp_Object
));
212 static void accumulate_script_ranges
P_ ((Lisp_Object
, Lisp_Object
,
214 Lisp_Object find_font_encoding
P_ ((Lisp_Object
));
216 static void set_fontset_font
P_ ((Lisp_Object
, Lisp_Object
));
220 /* Return 1 if ID is a valid fontset id, else return 0. */
223 fontset_id_valid_p (id
)
226 return (id
>= 0 && id
< ASIZE (Vfontset_table
) - 1);
233 /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
235 /* Return the fontset with ID. No check of ID's validness. */
236 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
238 /* Macros to access special values of FONTSET. */
239 #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
241 /* Macros to access special values of (base) FONTSET. */
242 #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
243 #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
244 #define FONTSET_SPEC(fontset) XCHAR_TABLE (fontset)->extras[5]
246 /* Macros to access special values of (realized) FONTSET. */
247 #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
248 #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
249 #define FONTSET_OBJLIST(fontset) XCHAR_TABLE (fontset)->extras[4]
250 #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
251 #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6]
252 #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
254 /* For both base and realized fontset. */
255 #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
257 #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
260 /* Macros for FONT-DEF and RFONT-DEF of fontset. */
261 #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \
263 (font_def) = Fmake_vector (make_number (3), (font_spec)); \
264 ASET ((font_def), 1, encoding); \
265 ASET ((font_def), 2, repertory); \
268 #define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
269 #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
270 #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
272 #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
273 #define RFONT_DEF_SET_FACE(rfont_def, face_id) \
274 ASET ((rfont_def), 0, make_number (face_id))
275 #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
276 #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1))
277 #define RFONT_DEF_REPERTORY(rfont_def) FONT_DEF_REPERTORY (AREF (rfont_def, 1))
278 #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2)
279 #define RFONT_DEF_SET_OBJECT(rfont_def, object) \
280 ASET ((rfont_def), 2, (object))
281 #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
282 #define RFONT_DEF_SET_SCORE(rfont_def, score) \
283 ASET ((rfont_def), 3, make_number (score))
284 #define RFONT_DEF_NEW(rfont_def, font_def) \
286 (rfont_def) = Fmake_vector (make_number (4), Qnil); \
287 ASET ((rfont_def), 1, (font_def)); \
288 RFONT_DEF_SET_SCORE ((rfont_def), 0); \
292 /* Return the element of FONTSET for the character C. If FONTSET is a
293 base fontset other then the default fontset and FONTSET doesn't
294 contain information for C, return the information in the default
297 #define FONTSET_REF(fontset, c) \
298 (EQ (fontset, Vdefault_fontset) \
299 ? CHAR_TABLE_REF (fontset, c) \
300 : fontset_ref ((fontset), (c)))
303 fontset_ref (fontset
, c
)
309 elt
= CHAR_TABLE_REF (fontset
, c
);
310 if (NILP (elt
) && ! EQ (fontset
, Vdefault_fontset
)
311 /* Don't check Vdefault_fontset for a realized fontset. */
312 && NILP (FONTSET_BASE (fontset
)))
313 elt
= CHAR_TABLE_REF (Vdefault_fontset
, c
);
317 /* Set elements of FONTSET for characters in RANGE to the value ELT.
318 RANGE is a cons (FROM . TO), where FROM and TO are character codes
319 specifying a range. */
321 #define FONTSET_SET(fontset, range, elt) \
322 Fset_char_table_range ((fontset), (range), (elt))
325 /* Modify the elements of FONTSET for characters in RANGE by replacing
326 with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
327 and TO are character codes specifying a range. If ADD is nil,
328 replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
331 #define FONTSET_ADD(fontset, range, elt, add) \
334 ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
335 : Fset_char_table_range ((fontset), (range), \
336 Fmake_vector (make_number (1), (elt)))) \
337 : fontset_add ((fontset), (range), (elt), (add)))
340 fontset_add (fontset
, range
, elt
, add
)
341 Lisp_Object fontset
, range
, elt
, add
;
344 int idx
= (EQ (add
, Qappend
) ? 0 : 1);
346 args
[1 - idx
] = Fmake_vector (make_number (1), elt
);
350 int from
= XINT (XCAR (range
));
351 int to
= XINT (XCDR (range
));
355 args
[idx
] = char_table_ref_and_range (fontset
, from
, &from1
, &to1
);
358 char_table_set_range (fontset
, from
, to1
,
359 NILP (args
[idx
]) ? args
[1 - idx
]
360 : Fvconcat (2, args
));
366 args
[idx
] = FONTSET_FALLBACK (fontset
);
367 FONTSET_FALLBACK (fontset
)
368 = NILP (args
[idx
]) ? args
[1 - idx
] : Fvconcat (2, args
);
374 fontset_compare_rfontdef (val1
, val2
)
375 const void *val1
, *val2
;
377 return (RFONT_DEF_SCORE (*(Lisp_Object
*) val1
)
378 - RFONT_DEF_SCORE (*(Lisp_Object
*) val2
));
381 /* Update FONT-GROUP which has this form:
382 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
383 RFONT-DEF0 RFONT-DEF1 ... ]
384 Reorder RFONT-DEFs according to the current language, and update
385 CHARSET-ORDERED-LIST-TICK.
387 If PREFERRED_FAMILY is not nil, that family has the higher priority
388 if the encoding charsets or languages in font-specs are the same. */
390 extern Lisp_Object
Fassoc_string ();
393 reorder_font_vector (font_group
, font
)
394 Lisp_Object font_group
;
397 Lisp_Object vec
, font_object
;
400 int score_changed
= 0;
403 XSETFONT (font_object
, font
);
407 vec
= XCDR (font_group
);
409 /* Exclude the tailing nil element from the reordering. */
410 if (NILP (AREF (vec
, size
- 1)))
413 for (i
= 0; i
< size
; i
++)
415 Lisp_Object rfont_def
= AREF (vec
, i
);
416 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
417 Lisp_Object font_spec
= FONT_DEF_SPEC (font_def
);
418 int score
= RFONT_DEF_SCORE (rfont_def
) & 0xFF;
420 if (! font_match_p (font_spec
, font_object
))
422 Lisp_Object encoding
= FONT_DEF_ENCODING (font_def
);
424 if (! NILP (encoding
))
428 for (tail
= Vcharset_ordered_list
;
429 ! EQ (tail
, Vcharset_non_preferred_head
) && CONSP (tail
);
430 score
+= 0x100, tail
= XCDR (tail
))
431 if (EQ (encoding
, XCAR (tail
)))
436 Lisp_Object lang
= Ffont_get (font_spec
, QClang
);
439 && ! EQ (lang
, Vcurrent_iso639_language
)
440 && (! CONSP (Vcurrent_iso639_language
)
441 || NILP (Fmemq (lang
, Vcurrent_iso639_language
))))
445 if (RFONT_DEF_SCORE (rfont_def
) != score
)
447 RFONT_DEF_SET_SCORE (rfont_def
, score
);
453 qsort (XVECTOR (vec
)->contents
, size
, sizeof (Lisp_Object
),
454 fontset_compare_rfontdef
);
455 XSETCAR (font_group
, make_number (charset_ordered_list_tick
));
459 fontset_get_font_group (Lisp_Object fontset
, int c
)
461 Lisp_Object font_group
;
462 Lisp_Object base_fontset
;
465 xassert (! BASE_FONTSET_P (fontset
));
467 font_group
= CHAR_TABLE_REF (fontset
, c
);
469 font_group
= FONTSET_FALLBACK (fontset
);
470 if (! NILP (font_group
))
472 base_fontset
= FONTSET_BASE (fontset
);
474 font_group
= char_table_ref_and_range (base_fontset
, c
, &from
, &to
);
476 font_group
= FONTSET_FALLBACK (base_fontset
);
477 if (NILP (font_group
))
479 font_group
= Fcopy_sequence (font_group
);
480 for (i
= 0; i
< ASIZE (font_group
); i
++)
481 if (! NILP (AREF (font_group
, i
)))
483 Lisp_Object rfont_def
;
485 RFONT_DEF_NEW (rfont_def
, AREF (font_group
, i
));
486 /* Remember the original order. */
487 RFONT_DEF_SET_SCORE (rfont_def
, i
);
488 ASET (font_group
, i
, rfont_def
);
490 font_group
= Fcons (make_number (-1), font_group
);
492 char_table_set_range (fontset
, from
, to
, font_group
);
494 FONTSET_FALLBACK (fontset
) = font_group
;
498 /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
499 character C. If no font is found, return Qnil if there's a
500 possibility that the default fontset or the fallback font groups
501 have a proper font, and return Qt if not.
503 If a font is found but is not yet opened, open it (if FACE is not
504 NULL) or return Qnil (if FACE is NULL).
506 ID is a charset-id that must be preferred, or -1 meaning no
509 If FALLBACK is nonzero, search only fallback fonts. */
512 fontset_find_font (fontset
, c
, face
, id
, fallback
)
518 Lisp_Object elt
, vec
, font_group
;
520 FRAME_PTR f
= XFRAME (FONTSET_FRAME (fontset
));
521 int charset_matched
= -1;
523 font_group
= fontset_get_font_group (fontset
, fallback
? -1 : c
);
524 if (! CONSP (font_group
))
526 vec
= XCDR (font_group
);
527 if (ASIZE (vec
) == 0)
532 if (XINT (XCAR (font_group
)) != charset_ordered_list_tick
)
533 /* We have just created the font-group,
534 or the charset priorities were changed. */
535 reorder_font_vector (font_group
, face
->ascii_face
->font
);
537 /* Find a spec matching with the charset ID to try at
539 for (i
= 0; i
< ASIZE (vec
); i
++)
541 Lisp_Object rfont_def
= AREF (vec
, i
);
542 Lisp_Object repertory
543 = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def
));
545 if (XINT (repertory
) == id
)
553 /* Find the first available font in the vector of RFONT-DEF. */
554 for (i
= 0; i
< ASIZE (vec
); i
++)
556 Lisp_Object font_entity
, font_object
;
558 if (i
== 0 && charset_matched
>= 0)
560 /* Try the element matching with the charset ID at first. */
561 elt
= AREF (vec
, charset_matched
);
562 charset_matched
= -1;
565 else if (i
!= charset_matched
)
571 /* This is a sign of not to try the other fonts. */
573 if (INTEGERP (RFONT_DEF_FACE (elt
))
574 && XINT (AREF (elt
, 1)) < 0)
575 /* We couldn't open this font last time. */
578 font_object
= RFONT_DEF_OBJECT (elt
);
579 if (NILP (font_object
))
581 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (elt
);
584 /* We have not yet opened the font. */
586 font_entity
= font_find_for_lface (f
, face
->lface
,
587 FONT_DEF_SPEC (font_def
), -1);
588 if (NILP (font_entity
))
590 /* Record that no font matches the spec. */
591 RFONT_DEF_SET_FACE (elt
, -1);
594 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
595 FONT_DEF_SPEC (font_def
));
596 if (NILP (font_object
))
598 /* Record that the font is unsable. */
599 RFONT_DEF_SET_FACE (elt
, -1);
602 RFONT_DEF_SET_OBJECT (elt
, font_object
);
605 if (font_has_char (f
, font_object
, c
))
609 /* The following code makes Emacs to find a font for C by fairly
610 exhausitive search. But, that takes long time especially for
613 /* Try to find the different font maching with the current spec
615 font_def
= RFONT_DEF_FONT_DEF (elt
);
616 for (i
++; i
< ASIZE (vec
); i
++)
618 if (! EQ (RFONT_DEF_FONT_DEF (AREF (vec
, i
)), font_def
))
620 if (font_has_char (f
, RFONT_DEF_OBJECT (AREF (vec
, i
)), c
))
621 return AREF (vec
, i
);
623 /* Find an font-entity that support C. */
624 font_entity
= font_find_for_lface (f
, face
->lface
,
625 FONT_DEF_SPEC (font_def
), c
);
626 if (! NILP (font_entity
))
628 Lisp_Object rfont_def
, new_vec
;
631 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
633 RFONT_DEF_NEW (rfont_def
, font_def
);
634 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
635 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (elt
));
636 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
637 for (j
= 0; j
< i
; j
++)
638 ASET (new_vec
, j
, AREF (vec
, j
));
639 ASET (new_vec
, j
, rfont_def
);
640 for (j
++; j
< ASIZE (new_vec
); j
++)
641 ASET (new_vec
, j
, AREF (vec
, j
- 1));
649 FONTSET_SET (fontset
, make_number (c
), make_number (0));
655 fontset_font (fontset
, c
, face
, id
)
661 Lisp_Object rfont_def
;
662 Lisp_Object base_fontset
;
664 /* Try a font-group of FONTSET. */
665 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
666 if (VECTORP (rfont_def
))
668 if (EQ (rfont_def
, Qt
))
671 /* Try a font-group of the default fontset. */
672 base_fontset
= FONTSET_BASE (fontset
);
673 if (! EQ (base_fontset
, Vdefault_fontset
))
675 if (NILP (FONTSET_DEFAULT (fontset
)))
676 FONTSET_DEFAULT (fontset
)
677 = make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
);
678 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
679 if (VECTORP (rfont_def
))
681 if (EQ (rfont_def
, Qt
))
685 /* Try a fallback font-group of FONTSET. */
686 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
687 if (VECTORP (rfont_def
))
689 if (EQ (rfont_def
, Qt
))
692 /* Try a fallback font-group of the default fontset . */
693 if (! EQ (base_fontset
, Vdefault_fontset
))
695 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
696 if (VECTORP (rfont_def
))
700 /* Remeber that we have no font for C. */
701 FONTSET_SET (fontset
, make_number (c
), Qt
);
706 /* Return a newly created fontset with NAME. If BASE is nil, make a
707 base fontset. Otherwise make a realized fontset whose base is
711 make_fontset (frame
, name
, base
)
712 Lisp_Object frame
, name
, base
;
715 int size
= ASIZE (Vfontset_table
);
716 int id
= next_fontset_id
;
718 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
719 the next available fontset ID. So it is expected that this loop
720 terminates quickly. In addition, as the last element of
721 Vfontset_table is always nil, we don't have to check the range of
723 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
726 Vfontset_table
= larger_vector (Vfontset_table
, size
+ 32, Qnil
);
728 fontset
= Fmake_char_table (Qfontset
, Qnil
);
730 FONTSET_ID (fontset
) = make_number (id
);
733 FONTSET_NAME (fontset
) = name
;
737 FONTSET_NAME (fontset
) = Qnil
;
738 FONTSET_FRAME (fontset
) = frame
;
739 FONTSET_BASE (fontset
) = base
;
742 ASET (Vfontset_table
, id
, fontset
);
743 next_fontset_id
= id
+ 1;
748 /* Set the ASCII font of the default fontset to FONTNAME if that is
751 set_default_ascii_font (fontname
)
752 Lisp_Object fontname
;
754 if (! STRINGP (FONTSET_ASCII (Vdefault_fontset
)))
756 int id
= fs_query_fontset (fontname
, 2);
759 fontname
= FONTSET_ASCII (FONTSET_FROM_ID (id
));
760 FONTSET_ASCII (Vdefault_fontset
)= fontname
;
765 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
767 /* Return the name of the fontset who has ID. */
775 fontset
= FONTSET_FROM_ID (id
);
776 return FONTSET_NAME (fontset
);
780 /* Return the ASCII font name of the fontset who has ID. */
786 Lisp_Object fontset
, elt
;
788 fontset
= FONTSET_FROM_ID (id
);
789 elt
= FONTSET_ASCII (fontset
);
796 free_realized_fontset (f
, fontset
)
803 for (tail
= FONTSET_OBJLIST (fontset
); CONSP (tail
); tail
= XCDR (tail
))
805 xassert (FONT_OBJECT_P (XCAR (tail
)));
806 font_close_object (f
, XCAR (tail
));
810 /* Free fontset of FACE defined on frame F. Called from
811 free_realized_face. */
814 free_face_fontset (f
, face
)
820 fontset
= FONTSET_FROM_ID (face
->fontset
);
823 xassert (! BASE_FONTSET_P (fontset
));
824 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
825 free_realized_fontset (f
, fontset
);
826 ASET (Vfontset_table
, face
->fontset
, Qnil
);
827 if (face
->fontset
< next_fontset_id
)
828 next_fontset_id
= face
->fontset
;
829 if (! NILP (FONTSET_DEFAULT (fontset
)))
831 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
833 fontset
= AREF (Vfontset_table
, id
);
834 xassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
835 xassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
836 free_realized_fontset (f
, fontset
);
837 ASET (Vfontset_table
, id
, Qnil
);
838 if (id
< next_fontset_id
)
839 next_fontset_id
= face
->fontset
;
845 /* Return 1 if FACE is suitable for displaying character C.
846 Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
847 when C is not an ASCII character. */
850 face_suitable_for_char_p (face
, c
)
854 Lisp_Object fontset
, rfont_def
;
856 fontset
= FONTSET_FROM_ID (face
->fontset
);
857 rfont_def
= fontset_font (fontset
, c
, NULL
, -1);
858 return (VECTORP (rfont_def
)
859 && INTEGERP (RFONT_DEF_FACE (rfont_def
))
860 && face
->id
== XINT (RFONT_DEF_FACE (rfont_def
)));
864 /* Return ID of face suitable for displaying character C on frame F.
865 FACE must be reazlied for ASCII characters in advance. Called from
866 the macro FACE_FOR_CHAR. */
869 face_for_char (f
, face
, c
, pos
, object
)
875 Lisp_Object fontset
, rfont_def
, charset
;
879 if (ASCII_CHAR_P (c
))
880 return face
->ascii_face
->id
;
882 xassert (fontset_id_valid_p (face
->fontset
));
883 fontset
= FONTSET_FROM_ID (face
->fontset
);
884 xassert (!BASE_FONTSET_P (fontset
));
893 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
896 else if (CHARSETP (charset
))
900 val
= assoc_no_quit (charset
, Vfont_encoding_charset_alist
);
901 if (CONSP (val
) && CHARSETP (XCDR (val
)))
902 charset
= XCDR (val
);
903 id
= XINT (CHARSET_SYMBOL_ID (charset
));
907 font_deferred_log ("font for", Fcons (make_number (c
), charset
), Qnil
);
908 rfont_def
= fontset_font (fontset
, c
, face
, id
);
909 if (VECTORP (rfont_def
))
911 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
912 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
915 Lisp_Object font_object
;
917 font_object
= RFONT_DEF_OBJECT (rfont_def
);
918 face_id
= face_for_font (f
, font_object
, face
);
919 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
924 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
925 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
928 face_id
= face_for_font (f
, Qnil
, face
);
929 FONTSET_NOFONT_FACE (fontset
) = make_number (face_id
);
932 xassert (face_id
>= 0);
938 font_for_char (face
, c
, pos
, object
)
943 Lisp_Object fontset
, rfont_def
, charset
;
947 if (ASCII_CHAR_P (c
))
949 Lisp_Object font_object
;
951 XSETFONT (font_object
, face
->ascii_face
->font
);
955 xassert (fontset_id_valid_p (face
->fontset
));
956 fontset
= FONTSET_FROM_ID (face
->fontset
);
957 xassert (!BASE_FONTSET_P (fontset
));
965 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
968 else if (CHARSETP (charset
))
972 val
= assoc_no_quit (charset
, Vfont_encoding_charset_alist
);
973 if (CONSP (val
) && CHARSETP (XCDR (val
)))
974 charset
= XCDR (val
);
975 id
= XINT (CHARSET_SYMBOL_ID (charset
));
979 font_deferred_log ("font for", Fcons (make_number (c
), charset
), Qnil
);
980 rfont_def
= fontset_font (fontset
, c
, face
, id
);
981 return (VECTORP (rfont_def
)
982 ? RFONT_DEF_OBJECT (rfont_def
)
987 /* Make a realized fontset for ASCII face FACE on frame F from the
988 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
989 default fontset as the base. Value is the id of the new fontset.
990 Called from realize_x_face. */
993 make_fontset_for_ascii_face (f
, base_fontset_id
, face
)
998 Lisp_Object base_fontset
, fontset
, frame
;
1000 XSETFRAME (frame
, f
);
1001 if (base_fontset_id
>= 0)
1003 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
1004 if (!BASE_FONTSET_P (base_fontset
))
1005 base_fontset
= FONTSET_BASE (base_fontset
);
1006 if (! BASE_FONTSET_P (base_fontset
))
1010 base_fontset
= Vdefault_fontset
;
1012 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
1013 return XINT (FONTSET_ID (fontset
));
1018 /* Cache data used by fontset_pattern_regexp. The car part is a
1019 pattern string containing at least one wild card, the cdr part is
1020 the corresponding regular expression. */
1021 static Lisp_Object Vcached_fontset_data
;
1023 #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data)))
1024 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
1026 /* If fontset name PATTERN contains any wild card, return regular
1027 expression corresponding to PATTERN. */
1030 fontset_pattern_regexp (pattern
)
1031 Lisp_Object pattern
;
1033 if (!index ((char *) SDATA (pattern
), '*')
1034 && !index ((char *) SDATA (pattern
), '?'))
1035 /* PATTERN does not contain any wild cards. */
1038 if (!CONSP (Vcached_fontset_data
)
1039 || strcmp ((char *) SDATA (pattern
), CACHED_FONTSET_NAME
))
1041 /* We must at first update the cached data. */
1042 unsigned char *regex
, *p0
, *p1
;
1043 int ndashes
= 0, nstars
= 0, nescs
= 0;
1045 for (p0
= SDATA (pattern
); *p0
; p0
++)
1049 else if (*p0
== '*')
1052 || *p0
== '.' || *p0
== '\\'
1053 || *p0
== '+' || *p0
== '^'
1058 /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise
1059 we convert "*" to "[^-]*" which is much faster in regular
1060 expression matching. */
1062 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 2 * nstars
+ 2 * nescs
+ 1);
1064 p1
= regex
= (unsigned char *) alloca (SBYTES (pattern
) + 5 * nstars
+ 2 * nescs
+ 1);
1067 for (p0
= SDATA (pattern
); *p0
; p0
++)
1074 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1077 else if (*p0
== '?')
1080 || *p0
== '.' || *p0
== '\\'
1081 || *p0
== '+' || *p0
== '^'
1083 *p1
++ = '\\', *p1
++ = *p0
;
1090 Vcached_fontset_data
= Fcons (build_string ((char *) SDATA (pattern
)),
1091 build_string ((char *) regex
));
1094 return CACHED_FONTSET_REGEX
;
1097 /* Return ID of the base fontset named NAME. If there's no such
1098 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1099 0: pattern containing '*' and '?' as wildcards
1100 1: regular expression
1101 2: literal fontset name
1105 fs_query_fontset (name
, name_pattern
)
1112 name
= Fdowncase (name
);
1113 if (name_pattern
!= 1)
1115 tem
= Frassoc (name
, Vfontset_alias_alist
);
1117 tem
= Fassoc (name
, Vfontset_alias_alist
);
1118 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1120 else if (name_pattern
== 0)
1122 tem
= fontset_pattern_regexp (name
);
1131 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1133 Lisp_Object fontset
, this_name
;
1135 fontset
= FONTSET_FROM_ID (i
);
1137 || !BASE_FONTSET_P (fontset
))
1140 this_name
= FONTSET_NAME (fontset
);
1141 if (name_pattern
== 1
1142 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1143 : !xstrcasecmp (SDATA (name
), SDATA (this_name
)))
1150 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1151 doc
: /* Return the name of a fontset that matches PATTERN.
1152 The value is nil if there is no matching fontset.
1153 PATTERN can contain `*' or `?' as a wildcard
1154 just as X font name matching algorithm allows.
1155 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1157 Lisp_Object pattern
, regexpp
;
1159 Lisp_Object fontset
;
1162 (*check_window_system_func
) ();
1164 CHECK_STRING (pattern
);
1166 if (SCHARS (pattern
) == 0)
1169 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1173 fontset
= FONTSET_FROM_ID (id
);
1174 return FONTSET_NAME (fontset
);
1177 /* Return a list of base fontset names matching PATTERN on frame F. */
1180 list_fontsets (f
, pattern
, size
)
1182 Lisp_Object pattern
;
1185 Lisp_Object frame
, regexp
, val
;
1188 XSETFRAME (frame
, f
);
1190 regexp
= fontset_pattern_regexp (pattern
);
1193 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1195 Lisp_Object fontset
, name
;
1197 fontset
= FONTSET_FROM_ID (id
);
1199 || !BASE_FONTSET_P (fontset
)
1200 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1202 name
= FONTSET_NAME (fontset
);
1204 if (STRINGP (regexp
)
1205 ? (fast_string_match (regexp
, name
) < 0)
1206 : strcmp ((char *) SDATA (pattern
), (char *) SDATA (name
)))
1209 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1216 /* Free all realized fontsets whose base fontset is BASE. */
1219 free_realized_fontsets (base
)
1225 /* For the moment, this doesn't work because free_realized_face
1226 doesn't remove FACE from a cache. Until we find a solution, we
1227 suppress this code, and simply use Fclear_face_cache even though
1228 that is not efficient. */
1230 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1232 Lisp_Object
this = AREF (Vfontset_table
, id
);
1234 if (EQ (FONTSET_BASE (this), base
))
1238 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1241 FRAME_PTR f
= XFRAME (FONTSET_FRAME (this));
1242 int face_id
= XINT (XCDR (XCAR (tail
)));
1243 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1245 /* Face THIS itself is also freed by the following call. */
1246 free_realized_face (f
, face
);
1252 /* But, we don't have to call Fclear_face_cache if no fontset has
1253 been realized from BASE. */
1254 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1256 Lisp_Object
this = AREF (Vfontset_table
, id
);
1258 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1260 Fclear_face_cache (Qt
);
1268 /* Check validity of NAME as a fontset name and return the
1269 corresponding fontset. If not valid, signal an error.
1270 If NAME is t, return Vdefault_fontset. */
1273 check_fontset_name (name
)
1279 return Vdefault_fontset
;
1281 CHECK_STRING (name
);
1282 /* First try NAME as literal. */
1283 id
= fs_query_fontset (name
, 2);
1285 /* For backward compatibility, try again NAME as pattern. */
1286 id
= fs_query_fontset (name
, 0);
1288 error ("Fontset `%s' does not exist", SDATA (name
));
1289 return FONTSET_FROM_ID (id
);
1293 accumulate_script_ranges (arg
, range
, val
)
1294 Lisp_Object arg
, range
, val
;
1296 if (EQ (XCAR (arg
), val
))
1299 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1301 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1306 /* Return an ASCII font name generated from fontset name NAME and
1307 font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */
1309 static INLINE Lisp_Object
1310 generate_ascii_font_name (name
, ascii_spec
)
1311 Lisp_Object name
, ascii_spec
;
1313 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1317 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1318 error ("Not an XLFD font name: %s", SDATA (name
));
1319 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1320 if (! NILP (AREF (ascii_spec
, i
)))
1321 ASET (font_spec
, i
, AREF (ascii_spec
, i
));
1322 i
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1324 error ("Not an XLFD font name: %s", SDATA (name
));
1325 return make_unibyte_string (xlfd
, i
);
1328 /* Variables referred in set_fontset_font. They are set before
1329 map_charset_chars is called in Fset_fontset_font. */
1330 static Lisp_Object font_def_arg
, add_arg
;
1331 static int from_arg
, to_arg
;
1333 /* Callback function for map_charset_chars in Fset_fontset_font. In
1334 FONTSET, set font_def_arg in a fashion specified by add_arg for
1335 characters in RANGE while ignoring the range between from_arg and
1339 set_fontset_font (fontset
, range
)
1340 Lisp_Object fontset
, range
;
1342 if (from_arg
< to_arg
)
1344 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1346 if (from
< from_arg
)
1352 range2
= Fcons (make_number (to_arg
), XCDR (range
));
1353 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1357 range
= Fcons (XCAR (range
), make_number (from_arg
));
1359 else if (to
<= to_arg
)
1364 range
= Fcons (make_number (to_arg
), XCDR (range
));
1367 FONTSET_ADD (fontset
, range
, font_def_arg
, add_arg
);
1370 extern Lisp_Object QCfamily
, QCregistry
;
1372 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1374 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1376 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1377 In that case, use FONT-SPEC for all characters in the range FROM and
1380 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1381 all characters that belong to the script.
1383 TARGET may be a charset. In that case, use FONT-SPEC for all
1384 characters in the charset.
1386 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1387 that no FONT-SPEC is specified.
1389 FONT-SPEC may one of these:
1390 * A font-spec object made by the function `font-spec' (which see).
1391 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1392 REGISTRY is a font registry name. FAMILY may contain foundry
1393 name, and REGISTRY may contain encoding name.
1394 * A font name string.
1395 * nil, which explicitly specifies that there's no font for TARGET.
1397 Optional 4th argument FRAME, if non-nil, is a frame. This argument is
1398 kept for backward compatibility and has no meaning.
1400 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1401 to the font specifications for TARGET previously set. If it is
1402 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1403 appended. By default, FONT-SPEC overrides the previous settings. */)
1404 (name
, target
, font_spec
, frame
, add
)
1405 Lisp_Object name
, target
, font_spec
, frame
, add
;
1407 Lisp_Object fontset
;
1408 Lisp_Object font_def
, registry
, family
;
1409 Lisp_Object range_list
;
1410 struct charset
*charset
= NULL
;
1412 fontset
= check_fontset_name (name
);
1414 /* The arg FRAME is kept for backward compatibility. We only check
1417 CHECK_LIVE_FRAME (frame
);
1419 if (CONSP (font_spec
))
1421 Lisp_Object spec
= Ffont_spec (0, NULL
);
1423 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1426 else if (STRINGP (font_spec
))
1428 Lisp_Object args
[2];
1429 extern Lisp_Object QCname
;
1432 args
[1] = font_spec
;
1433 font_spec
= Ffont_spec (2, args
);
1435 else if (! NILP (font_spec
) && ! FONT_SPEC_P (font_spec
))
1436 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1438 if (! NILP (font_spec
))
1440 Lisp_Object encoding
, repertory
;
1442 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1443 if (! NILP (family
) )
1444 family
= SYMBOL_NAME (family
);
1445 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1446 if (! NILP (registry
))
1447 registry
= Fdowncase (SYMBOL_NAME (registry
));
1448 encoding
= find_font_encoding (concat3 (family
, build_string ("-"),
1450 if (NILP (encoding
))
1453 if (SYMBOLP (encoding
))
1455 CHECK_CHARSET (encoding
);
1456 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1460 repertory
= XCDR (encoding
);
1461 encoding
= XCAR (encoding
);
1462 CHECK_CHARSET (encoding
);
1463 encoding
= CHARSET_SYMBOL_ID (encoding
);
1464 if (! NILP (repertory
) && SYMBOLP (repertory
))
1466 CHECK_CHARSET (repertory
);
1467 repertory
= CHARSET_SYMBOL_ID (repertory
);
1470 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1475 if (CHARACTERP (target
))
1476 range_list
= Fcons (Fcons (target
, target
), Qnil
);
1477 else if (CONSP (target
))
1479 Lisp_Object from
, to
;
1481 from
= Fcar (target
);
1483 CHECK_CHARACTER (from
);
1484 CHECK_CHARACTER (to
);
1485 range_list
= Fcons (target
, Qnil
);
1487 else if (SYMBOLP (target
) && !NILP (target
))
1489 Lisp_Object script_list
;
1493 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1494 if (! NILP (Fmemq (target
, script_list
)))
1496 val
= Fcons (target
, Qnil
);
1497 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1499 range_list
= XCDR (val
);
1500 if (EQ (target
, Qlatin
) && NILP (FONTSET_ASCII (fontset
)))
1502 if (VECTORP (font_spec
))
1503 val
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1507 FONTSET_ASCII (fontset
) = val
;
1510 if (CHARSETP (target
))
1512 if (EQ (target
, Qascii
) && NILP (FONTSET_ASCII (fontset
)))
1514 if (VECTORP (font_spec
))
1515 font_spec
= generate_ascii_font_name (FONTSET_NAME (fontset
),
1517 FONTSET_ASCII (fontset
) = font_spec
;
1518 range_list
= Fcons (Fcons (make_number (0), make_number (127)),
1523 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1526 else if (NILP (range_list
))
1527 error ("Invalid script or charset name: %s",
1528 SDATA (SYMBOL_NAME (target
)));
1530 else if (NILP (target
))
1531 range_list
= Fcons (Qnil
, Qnil
);
1533 error ("Invalid target for setting a font");
1538 font_def_arg
= font_def
;
1540 if (NILP (range_list
))
1541 from_arg
= to_arg
= 0;
1543 from_arg
= XINT (XCAR (XCAR (range_list
))),
1544 to_arg
= XINT (XCDR (XCAR (range_list
)));
1546 map_charset_chars (set_fontset_font
, Qnil
, fontset
, charset
,
1547 CHARSET_MIN_CODE (charset
),
1548 CHARSET_MAX_CODE (charset
));
1550 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1551 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1553 /* Free all realized fontsets whose base is FONTSET. This way, the
1554 specified character(s) are surely redisplayed by a correct
1556 free_realized_fontsets (fontset
);
1562 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1563 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1565 FONTLIST is an alist of scripts vs the corresponding font specification list.
1566 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1567 character of SCRIPT is displayed by a font that matches one of
1570 SCRIPT is a symbol that appears in the first extra slot of the
1571 char-table `char-script-table'.
1573 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1574 `set-fontset-font' for the meaning. */)
1576 Lisp_Object name
, fontlist
;
1578 Lisp_Object fontset
;
1581 CHECK_STRING (name
);
1582 CHECK_LIST (fontlist
);
1584 name
= Fdowncase (name
);
1585 id
= fs_query_fontset (name
, 0);
1588 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1589 Lisp_Object short_name
;
1593 if (font_parse_xlfd ((char *) SDATA (name
), font_spec
) < 0)
1594 error ("Fontset name must be in XLFD format");
1595 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1596 if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1597 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1598 error ("Registry field of fontset name must be \"fontset-*\"");
1599 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1600 Vfontset_alias_alist
);
1601 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1602 fontset
= make_fontset (Qnil
, name
, Qnil
);
1603 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1605 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1606 FONTSET_ASCII (fontset
) = make_unibyte_string (xlfd
, len
);
1610 fontset
= FONTSET_FROM_ID (id
);;
1611 free_realized_fontsets (fontset
);
1612 Fset_char_table_range (fontset
, Qt
, Qnil
);
1615 for (; ! NILP (fontlist
); fontlist
= Fcdr (fontlist
))
1617 Lisp_Object elt
, script
;
1619 elt
= Fcar (fontlist
);
1620 script
= Fcar (elt
);
1622 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1623 for (; CONSP (elt
); elt
= XCDR (elt
))
1624 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1626 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1632 /* Alist of automatically created fontsets. Each element is a cons
1633 (FONT-SPEC . FONTSET-ID). */
1634 static Lisp_Object auto_fontset_alist
;
1637 fontset_from_font (font_object
)
1638 Lisp_Object font_object
;
1640 Lisp_Object font_name
= font_get_name (font_object
);
1641 Lisp_Object font_spec
= Fcopy_font_spec (font_object
);
1642 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1646 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1648 return XINT (FONTSET_ID (XCDR (val
)));
1649 if (NILP (auto_fontset_alist
))
1650 alias
= intern ("fontset-startup");
1654 int len
= XINT (Flength (auto_fontset_alist
));
1656 sprintf (temp
, "fontset-auto%d", len
);
1657 alias
= intern (temp
);
1659 fontset_spec
= Fcopy_font_spec (font_spec
);
1660 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1661 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1664 fontset
= make_fontset (Qnil
, name
, Qnil
);
1665 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1666 Vfontset_alias_alist
);
1667 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1668 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1669 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1670 FONTSET_ASCII (fontset
) = font_name
;
1671 font_spec
= Fcopy_font_spec (font_spec
);
1672 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso10646_1
);
1673 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_EXTRA_INDEX
; i
++)
1674 ASET (font_spec
, i
, Qnil
);
1675 Fset_fontset_font (name
, Qlatin
, font_spec
, Qnil
, Qnil
);
1676 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1679 nsfont_make_fontset_for_font(name
, font_object
);
1682 return XINT (FONTSET_ID (fontset
));
1685 /* Return a cons (FONT-OBJECT . GLYPH-CODE).
1686 FONT-OBJECT is the font for the character at POSITION in the current
1687 buffer. This is computed from all the text properties and overlays
1688 that apply to POSITION. POSTION may be nil, in which case,
1689 FONT-SPEC is the font for displaying the character CH with the
1692 GLYPH-CODE is the glyph code in the font to use for the character.
1694 If the 2nd optional arg CH is non-nil, it is a character to check
1695 the font instead of the character at POSITION.
1697 It returns nil in the following cases:
1699 (1) The window system doesn't have a font for the character (thus
1700 it is displayed by an empty box).
1702 (2) The character code is invalid.
1704 (3) If POSITION is not nil, and the current buffer is not displayed
1707 In addition, the returned font name may not take into account of
1708 such redisplay engine hooks as what used in jit-lock-mode if
1709 POSITION is currently not visible. */
1712 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1713 doc
: /* For internal use only. */)
1715 Lisp_Object position
, ch
;
1717 EMACS_INT pos
, pos_byte
, dummy
;
1724 if (NILP (position
))
1726 CHECK_CHARACTER (ch
);
1728 f
= XFRAME (selected_frame
);
1729 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
1735 Lisp_Object window
, charset
;
1738 CHECK_NUMBER_COERCE_MARKER (position
);
1739 pos
= XINT (position
);
1740 if (pos
< BEGV
|| pos
>= ZV
)
1741 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1742 pos_byte
= CHAR_TO_BYTE (pos
);
1744 c
= FETCH_CHAR (pos_byte
);
1750 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1753 w
= XWINDOW (window
);
1754 f
= XFRAME (w
->frame
);
1755 face_id
= face_at_buffer_position (w
, pos
, -1, -1, &dummy
, pos
+ 100, 0);
1756 charset
= Fget_char_property (position
, Qcharset
, Qnil
);
1757 if (CHARSETP (charset
))
1758 cs_id
= XINT (CHARSET_SYMBOL_ID (charset
));
1762 if (! CHAR_VALID_P (c
, 0))
1764 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1765 face
= FACE_FROM_ID (f
, face_id
);
1768 unsigned code
= face
->font
->driver
->encode_char (face
->font
, c
);
1769 Lisp_Object font_object
;
1770 /* Assignment to EMACS_INT stops GCC whining about limited range
1772 EMACS_INT cod
= code
;
1774 if (code
== FONT_INVALID_CODE
)
1776 XSETFONT (font_object
, face
->font
);
1777 if (cod
<= MOST_POSITIVE_FIXNUM
)
1778 return Fcons (font_object
, make_number (code
));
1779 return Fcons (font_object
, Fcons (make_number (code
>> 16),
1780 make_number (code
& 0xFFFF)));
1786 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1787 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1788 The value is a char-table whose elements have this form:
1790 ((FONT-PATTERN OPENED-FONT ...) ...)
1792 FONT-PATTERN is a vector:
1794 [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
1796 or a string of font name pattern.
1798 OPENED-FONT is a name of a font actually opened.
1800 The char-table has one extra slot. The value is a char-table
1801 containing the information about the derived fonts from the default
1802 fontset. The format is the same as above. */)
1804 Lisp_Object fontset
, frame
;
1807 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1808 Lisp_Object val
, elt
;
1811 (*check_window_system_func
) ();
1813 fontset
= check_fontset_name (fontset
);
1816 frame
= selected_frame
;
1817 CHECK_LIVE_FRAME (frame
);
1820 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1821 in the table `realized'. */
1822 realized
[0] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1823 * ASIZE (Vfontset_table
));
1824 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1826 elt
= FONTSET_FROM_ID (i
);
1828 && EQ (FONTSET_BASE (elt
), fontset
)
1829 && EQ (FONTSET_FRAME (elt
), frame
))
1830 realized
[0][j
++] = elt
;
1832 realized
[0][j
] = Qnil
;
1834 realized
[1] = (Lisp_Object
*) alloca (sizeof (Lisp_Object
)
1835 * ASIZE (Vfontset_table
));
1836 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1838 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1840 realized
[1][j
++] = elt
;
1842 realized
[1][j
] = Qnil
;
1844 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1845 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1846 XCHAR_TABLE (tables
[0])->extras
[0] = tables
[1];
1847 fontsets
[0] = fontset
;
1848 fontsets
[1] = Vdefault_fontset
;
1850 /* Accumulate information of the fontset in TABLE. The format of
1851 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1852 for (k
= 0; k
<= 1; k
++)
1854 for (c
= 0; c
<= MAX_CHAR
; )
1858 if (c
<= MAX_5_BYTE_CHAR
)
1860 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1861 if (to
> MAX_5_BYTE_CHAR
)
1862 to
= MAX_5_BYTE_CHAR
;
1866 val
= FONTSET_FALLBACK (fontsets
[k
]);
1873 /* At first, set ALIST to ((FONT-SPEC) ...). */
1874 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1875 if (! NILP (AREF (val
, i
)))
1876 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1878 alist
= Fnreverse (alist
);
1880 /* Then store opened font names to cdr of each elements. */
1881 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1883 if (c
<= MAX_5_BYTE_CHAR
)
1884 val
= FONTSET_REF (realized
[k
][i
], c
);
1886 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1887 if (! VECTORP (val
))
1889 /* VAL: [int ? [FACE-ID FONT-DEF FONT-OBJECT int] ... ] */
1890 for (j
= 2; j
< ASIZE (val
); j
++)
1892 elt
= AREF (val
, j
);
1893 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1895 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1896 Lisp_Object slot
, name
;
1898 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1899 name
= AREF (font_object
, FONT_NAME_INDEX
);
1900 if (NILP (Fmember (name
, XCDR (slot
))))
1901 nconc2 (slot
, Fcons (name
, Qnil
));
1906 /* Store ALIST in TBL for characters C..TO. */
1907 if (c
<= MAX_5_BYTE_CHAR
)
1908 char_table_set_range (tables
[k
], c
, to
, alist
);
1910 XCHAR_TABLE (tables
[k
])->defalt
= alist
;
1912 /* At last, change each elements to font names. */
1913 for (; CONSP (alist
); alist
= XCDR (alist
))
1916 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
1927 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
1928 doc
: /* Return a font name pattern for character CH in fontset NAME.
1929 If NAME is t, find a pattern in the default fontset.
1931 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
1932 family name and REGISTRY is a font registry name. This is actually
1933 the first font name pattern for CH in the fontset or in the default
1936 If the 2nd optional arg ALL is non-nil, return a list of all font name
1939 Lisp_Object name
, ch
, all
;
1942 Lisp_Object fontset
, elt
, list
, repertory
, val
;
1945 fontset
= check_fontset_name (name
);
1947 CHECK_CHARACTER (ch
);
1952 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
1953 i
++, elt
= FONTSET_FALLBACK (fontset
))
1955 for (j
= 0; j
< ASIZE (elt
); j
++)
1957 val
= AREF (elt
, j
);
1958 repertory
= AREF (val
, 1);
1959 if (INTEGERP (repertory
))
1961 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
1963 if (! CHAR_CHARSET_P (c
, charset
))
1966 else if (CHAR_TABLE_P (repertory
))
1968 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
1971 val
= AREF (val
, 0);
1972 val
= Fcons (AREF (val
, 0), AREF (val
, 5));
1975 list
= Fcons (val
, list
);
1977 if (EQ (fontset
, Vdefault_fontset
))
1979 fontset
= Vdefault_fontset
;
1981 return (Fnreverse (list
));
1984 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
1985 doc
: /* Return a list of all defined fontset names. */)
1988 Lisp_Object fontset
, list
;
1992 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1994 fontset
= FONTSET_FROM_ID (i
);
1996 && BASE_FONTSET_P (fontset
))
1997 list
= Fcons (FONTSET_NAME (fontset
), list
);
2004 #ifdef FONTSET_DEBUG
2007 dump_fontset (fontset
)
2008 Lisp_Object fontset
;
2012 vec
= Fmake_vector (make_number (3), Qnil
);
2013 ASET (vec
, 0, FONTSET_ID (fontset
));
2015 if (BASE_FONTSET_P (fontset
))
2017 ASET (vec
, 1, FONTSET_NAME (fontset
));
2023 frame
= FONTSET_FRAME (fontset
);
2026 FRAME_PTR f
= XFRAME (frame
);
2028 if (FRAME_LIVE_P (f
))
2030 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), f
->name
));
2033 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
2035 if (!NILP (FONTSET_DEFAULT (fontset
)))
2036 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
2041 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
2042 doc
: /* Return a brief summary of all fontsets for debug use. */)
2048 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
2049 if (! NILP (AREF (Vfontset_table
, i
)))
2050 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
2051 return (Fnreverse (val
));
2053 #endif /* FONTSET_DEBUG */
2058 DEFSYM (Qfontset
, "fontset");
2059 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (9));
2060 DEFSYM (Qfontset_info
, "fontset-info");
2061 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2063 DEFSYM (Qprepend
, "prepend");
2064 DEFSYM (Qappend
, "append");
2065 DEFSYM (Qlatin
, "latin");
2067 Vcached_fontset_data
= Qnil
;
2068 staticpro (&Vcached_fontset_data
);
2070 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2071 staticpro (&Vfontset_table
);
2073 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2074 staticpro (&Vdefault_fontset
);
2075 FONTSET_ID (Vdefault_fontset
) = make_number (0);
2076 FONTSET_NAME (Vdefault_fontset
)
2077 = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
2078 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2079 next_fontset_id
= 1;
2081 auto_fontset_alist
= Qnil
;
2082 staticpro (&auto_fontset_alist
);
2084 DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist
,
2086 Alist of charsets vs the charsets to determine the preferred font encoding.
2087 Each element looks like (CHARSET . ENCODING-CHARSET),
2088 where ENCODING-CHARSET is a charset registered in the variable
2089 `font-encoding-alist' as ENCODING.
2091 When a text has a property `charset' and the value is CHARSET, a font
2092 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2093 Vfont_encoding_charset_alist
= Qnil
;
2095 DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent
,
2097 Char table of characters whose ascent values should be ignored.
2098 If an entry for a character is non-nil, the ascent value of the glyph
2099 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2101 This affects how a composite character which contains
2102 such a character is displayed on screen. */);
2103 Vuse_default_ascent
= Qnil
;
2105 DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition
,
2107 Char table of characters which are not composed relatively.
2108 If an entry for a character is non-nil, a composition sequence
2109 which contains that character is displayed so that
2110 the glyph of that character is put without considering
2111 an ascent and descent value of a previous character. */);
2112 Vignore_relative_composition
= Qnil
;
2114 DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist
,
2115 doc
: /* Alist of fontname vs list of the alternate fontnames.
2116 When a specified font name is not found, the corresponding
2117 alternate fontnames (if any) are tried instead. */);
2118 Valternate_fontname_alist
= Qnil
;
2120 DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist
,
2121 doc
: /* Alist of fontset names vs the aliases. */);
2122 Vfontset_alias_alist
= Fcons (Fcons (FONTSET_NAME (Vdefault_fontset
),
2123 build_string ("fontset-default")),
2126 DEFVAR_LISP ("vertical-centering-font-regexp",
2127 &Vvertical_centering_font_regexp
,
2128 doc
: /* *Regexp matching font names that require vertical centering on display.
2129 When a character is displayed with such fonts, the character is displayed
2130 at the vertical center of lines. */);
2131 Vvertical_centering_font_regexp
= Qnil
;
2133 DEFVAR_LISP ("otf-script-alist", &Votf_script_alist
,
2134 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2135 Votf_script_alist
= Qnil
;
2137 defsubr (&Squery_fontset
);
2138 defsubr (&Snew_fontset
);
2139 defsubr (&Sset_fontset_font
);
2140 defsubr (&Sinternal_char_font
);
2141 defsubr (&Sfontset_info
);
2142 defsubr (&Sfontset_font
);
2143 defsubr (&Sfontset_list
);
2144 #ifdef FONTSET_DEBUG
2145 defsubr (&Sfontset_list_all
);
2149 /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537
2150 (do not change this comment) */