3 Copyright (C) 2001-2014 Free Software Foundation, Inc.
4 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5 2005, 2006, 2007, 2008, 2009, 2010, 2011
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/>. */
31 #include "blockinput.h"
32 #include "character.h"
38 #include "dispextern.h"
39 #include "intervals.h"
42 #ifdef HAVE_WINDOW_SYSTEM
44 #endif /* HAVE_WINDOW_SYSTEM */
45 #include "termhooks.h"
50 A fontset is a collection of font related information to give
51 similar appearance (style, etc) of characters. A fontset has two
52 roles. One is to use for the frame parameter `font' as if it is an
53 ASCII font. In that case, Emacs uses the font specified for
54 `ascii' script for the frame's default font.
56 Another role, the more important one, is to provide information
57 about which font to use for each non-ASCII character.
59 There are two kinds of fontsets; base and realized. A base fontset
60 is created by `new-fontset' from Emacs Lisp explicitly. A realized
61 fontset is created implicitly when a face is realized for ASCII
62 characters. A face is also realized for non-ASCII characters based
63 on an ASCII face. All of non-ASCII faces based on the same ASCII
64 face share the same realized fontset.
66 A fontset object is implemented by a char-table whose default value
67 and parent are always nil.
69 An element of a base fontset is a vector of FONT-DEFs which itself
70 is a vector [ FONT-SPEC ENCODING REPERTORY ].
72 An element of a realized fontset is nil, t, 0, or a vector of this
75 [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
76 RFONT-DEF0 RFONT-DEF1 ... ]
78 RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
80 [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
82 RFONT-DEFn are automatically reordered by the current charset
85 The value nil means that we have not yet generated the above vector
86 from the base of the fontset.
88 The value t means that no font is available for the corresponding
91 The value 0 means that no font is available for the corresponding
92 range of characters in this fontset, but may be available in the
96 A fontset has 9 extra slots.
98 The 1st slot: the ID number of the fontset
101 base: the name of the fontset
106 realized: the base fontset
110 realized: the frame that the fontset belongs to
113 base: the font name for ASCII characters
118 realized: the ID number of a face to use for characters that
119 has no font in a realized fontset.
123 realized: Alist of font index vs the corresponding repertory
128 realized: If the base is not the default fontset, a fontset
129 realized from the default fontset, else nil.
132 base: Same as element value (but for fallback fonts).
135 All fontsets are recorded in the vector Vfontset_table.
140 There's a special base fontset named `default fontset' which
141 defines the default font specifications. When a base fontset
142 doesn't specify a font for a specific character, the corresponding
143 value in the default fontset is used.
145 The parent of a realized fontset created for such a face that has
146 no fontset is the default fontset.
149 These structures are hidden from the other codes than this file.
150 The other codes handle fontsets only by their ID numbers. They
151 usually use the variable name `fontset' for IDs. But, in this
152 file, we always use variable name `id' for IDs, and name `fontset'
153 for an actual fontset object, i.e., char-table.
157 /********** VARIABLES and FUNCTION PROTOTYPES **********/
159 static Lisp_Object Qfontset
;
160 static Lisp_Object Qfontset_info
;
161 static Lisp_Object Qprepend
, Qappend
;
164 /* Vector containing all fontsets. */
165 static Lisp_Object Vfontset_table
;
167 /* Next possibly free fontset ID. Usually this keeps the minimum
168 fontset ID not yet used. */
169 static int next_fontset_id
;
171 /* The default fontset. This gives default FAMILY and REGISTRY of
172 font for each character. */
173 static Lisp_Object Vdefault_fontset
;
175 /* Prototype declarations for static functions. */
176 static Lisp_Object
make_fontset (Lisp_Object
, Lisp_Object
, Lisp_Object
);
178 /* Return true if ID is a valid fontset id.
179 Optimized away if ENABLE_CHECKING is not defined. */
182 fontset_id_valid_p (int id
)
184 return (id
>= 0 && id
< ASIZE (Vfontset_table
) - 1);
189 /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
191 /* Return the fontset with ID. No check of ID's validness. */
192 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
194 /* Access special values of FONTSET. */
196 #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
198 set_fontset_id (Lisp_Object fontset
, Lisp_Object id
)
200 set_char_table_extras (fontset
, 0, id
);
203 /* Access special values of (base) FONTSET. */
205 #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
207 set_fontset_name (Lisp_Object fontset
, Lisp_Object name
)
209 set_char_table_extras (fontset
, 1, name
);
212 #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[2]
214 set_fontset_ascii (Lisp_Object fontset
, Lisp_Object ascii
)
216 set_char_table_extras (fontset
, 2, ascii
);
219 /* Access special values of (realized) FONTSET. */
221 #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[3]
223 set_fontset_base (Lisp_Object fontset
, Lisp_Object base
)
225 set_char_table_extras (fontset
, 3, base
);
228 #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[4]
230 set_fontset_frame (Lisp_Object fontset
, Lisp_Object frame
)
232 set_char_table_extras (fontset
, 4, frame
);
235 #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
237 set_fontset_nofont_face (Lisp_Object fontset
, Lisp_Object face
)
239 set_char_table_extras (fontset
, 5, face
);
242 #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[6]
244 set_fontset_default (Lisp_Object fontset
, Lisp_Object def
)
246 set_char_table_extras (fontset
, 6, def
);
249 /* For both base and realized fontset. */
251 #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[7]
253 set_fontset_fallback (Lisp_Object fontset
, Lisp_Object fallback
)
255 set_char_table_extras (fontset
, 7, fallback
);
258 #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) = make_uninit_vector (3); \
264 ASET ((font_def), 0, font_spec); \
265 ASET ((font_def), 1, encoding); \
266 ASET ((font_def), 2, repertory); \
269 #define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
270 #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
271 #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
273 #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
274 #define RFONT_DEF_SET_FACE(rfont_def, face_id) \
275 ASET ((rfont_def), 0, make_number (face_id))
276 #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
277 #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (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 /* Score of RFONT_DEF is an integer value; the lowest 8 bits represent
282 the order of listing by font backends, the higher bits represents
283 the order given by charset priority list. The smaller value is
285 #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
286 #define RFONT_DEF_SET_SCORE(rfont_def, score) \
287 ASET ((rfont_def), 3, make_number (score))
288 #define RFONT_DEF_NEW(rfont_def, font_def) \
290 (rfont_def) = Fmake_vector (make_number (4), Qnil); \
291 ASET ((rfont_def), 1, (font_def)); \
292 RFONT_DEF_SET_SCORE ((rfont_def), 0); \
296 /* Return the element of FONTSET for the character C. If FONTSET is a
297 base fontset other then the default fontset and FONTSET doesn't
298 contain information for C, return the information in the default
301 #define FONTSET_REF(fontset, c) \
302 (EQ (fontset, Vdefault_fontset) \
303 ? CHAR_TABLE_REF (fontset, c) \
304 : fontset_ref ((fontset), (c)))
307 fontset_ref (Lisp_Object fontset
, int c
)
311 elt
= CHAR_TABLE_REF (fontset
, c
);
312 if (NILP (elt
) && ! EQ (fontset
, Vdefault_fontset
)
313 /* Don't check Vdefault_fontset for a realized fontset. */
314 && NILP (FONTSET_BASE (fontset
)))
315 elt
= CHAR_TABLE_REF (Vdefault_fontset
, c
);
319 /* Set elements of FONTSET for characters in RANGE to the value ELT.
320 RANGE is a cons (FROM . TO), where FROM and TO are character codes
321 specifying a range. */
323 #define FONTSET_SET(fontset, range, elt) \
324 Fset_char_table_range ((fontset), (range), (elt))
327 /* Modify the elements of FONTSET for characters in RANGE by replacing
328 with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
329 and TO are character codes specifying a range. If ADD is nil,
330 replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
333 #define FONTSET_ADD(fontset, range, elt, add) \
336 ? (set_fontset_fallback \
337 (fontset, Fmake_vector (make_number (1), (elt)))) \
339 Fset_char_table_range (fontset, range, \
340 Fmake_vector (make_number (1), elt)))) \
341 : fontset_add ((fontset), (range), (elt), (add)))
344 fontset_add (Lisp_Object fontset
, Lisp_Object range
, Lisp_Object elt
, Lisp_Object 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 from1
= from
, to1
= to
;
359 args
[idx
] = char_table_ref_and_range (fontset
, from
, &from1
, &to1
);
360 char_table_set_range (fontset
, from
, to1
,
361 NILP (args
[idx
]) ? args
[1 - idx
]
362 : Fvconcat (2, args
));
368 args
[idx
] = FONTSET_FALLBACK (fontset
);
370 (fontset
, NILP (args
[idx
]) ? args
[1 - idx
] : Fvconcat (2, args
));
375 fontset_compare_rfontdef (const void *val1
, const void *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. */
391 reorder_font_vector (Lisp_Object font_group
, struct font
*font
)
393 Lisp_Object vec
, font_object
;
396 bool score_changed
= 0;
399 XSETFONT (font_object
, font
);
403 vec
= XCDR (font_group
);
405 /* Exclude the tailing nil element from the reordering. */
406 if (NILP (AREF (vec
, size
- 1)))
409 for (i
= 0; i
< size
; i
++)
411 Lisp_Object rfont_def
= AREF (vec
, i
);
412 Lisp_Object font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
413 Lisp_Object font_spec
= FONT_DEF_SPEC (font_def
);
414 int score
= RFONT_DEF_SCORE (rfont_def
) & 0xFF;
415 Lisp_Object otf_spec
= Ffont_get (font_spec
, QCotf
);
417 if (! NILP (otf_spec
))
418 /* A font-spec with :otf is preferable regardless of encoding
421 else if (! font_match_p (font_spec
, font_object
))
423 Lisp_Object encoding
= FONT_DEF_ENCODING (font_def
);
425 if (! NILP (encoding
))
429 for (tail
= Vcharset_ordered_list
;
430 ! EQ (tail
, Vcharset_non_preferred_head
) && CONSP (tail
);
432 if (EQ (encoding
, XCAR (tail
)))
434 else if (score
<= min (INT_MAX
, MOST_POSITIVE_FIXNUM
) - 0x100)
439 Lisp_Object lang
= Ffont_get (font_spec
, QClang
);
442 && ! EQ (lang
, Vcurrent_iso639_language
)
443 && (! CONSP (Vcurrent_iso639_language
)
444 || NILP (Fmemq (lang
, Vcurrent_iso639_language
))))
448 if (RFONT_DEF_SCORE (rfont_def
) != score
)
450 RFONT_DEF_SET_SCORE (rfont_def
, score
);
456 qsort (XVECTOR (vec
)->contents
, size
, word_size
,
457 fontset_compare_rfontdef
);
458 XSETCAR (font_group
, make_number (charset_ordered_list_tick
));
461 /* Return a font-group (actually a cons (-1 . FONT-GROUP-VECTOR)) for
462 character C in FONTSET. If C is -1, return a fallback font-group.
463 If C is not -1, the value may be Qt (FONTSET doesn't have a font
464 for C even in the fallback group), or 0 (a font for C may be found
465 only in the fallback group). */
468 fontset_get_font_group (Lisp_Object fontset
, int c
)
470 Lisp_Object font_group
;
471 Lisp_Object base_fontset
;
472 int from
= 0, to
= MAX_CHAR
, i
;
474 eassert (! BASE_FONTSET_P (fontset
));
476 font_group
= CHAR_TABLE_REF (fontset
, c
);
478 font_group
= FONTSET_FALLBACK (fontset
);
479 if (! NILP (font_group
))
481 base_fontset
= FONTSET_BASE (fontset
);
482 if (NILP (base_fontset
))
485 font_group
= char_table_ref_and_range (base_fontset
, c
, &from
, &to
);
487 font_group
= FONTSET_FALLBACK (base_fontset
);
488 if (NILP (font_group
))
490 font_group
= make_number (0);
492 char_table_set_range (fontset
, from
, to
, font_group
);
495 if (!VECTORP (font_group
))
497 font_group
= Fcopy_sequence (font_group
);
498 for (i
= 0; i
< ASIZE (font_group
); i
++)
499 if (! NILP (AREF (font_group
, i
)))
501 Lisp_Object rfont_def
;
503 RFONT_DEF_NEW (rfont_def
, AREF (font_group
, i
));
504 /* Remember the original order. */
505 RFONT_DEF_SET_SCORE (rfont_def
, i
);
506 ASET (font_group
, i
, rfont_def
);
508 font_group
= Fcons (make_number (-1), font_group
);
510 char_table_set_range (fontset
, from
, to
, font_group
);
512 set_fontset_fallback (fontset
, font_group
);
516 /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
517 character C. If no font is found, return Qnil if there's a
518 possibility that the default fontset or the fallback font groups
519 have a proper font, and return Qt if not.
521 If a font is found but is not yet opened, open it (if FACE is not
522 NULL) or return Qnil (if FACE is NULL).
524 ID is a charset-id that must be preferred, or -1 meaning no
527 If FALLBACK, search only fallback fonts. */
530 fontset_find_font (Lisp_Object fontset
, int c
, struct face
*face
, int id
,
533 Lisp_Object vec
, font_group
;
534 int i
, charset_matched
= 0, found_index
;
535 struct frame
*f
= (FRAMEP (FONTSET_FRAME (fontset
))
536 ? XFRAME (FONTSET_FRAME (fontset
))
537 : XFRAME (selected_frame
));
538 Lisp_Object rfont_def
;
540 font_group
= fontset_get_font_group (fontset
, fallback
? -1 : c
);
541 if (! CONSP (font_group
))
543 vec
= XCDR (font_group
);
544 if (ASIZE (vec
) == 0)
549 if (XINT (XCAR (font_group
)) != charset_ordered_list_tick
)
550 /* We have just created the font-group,
551 or the charset priorities were changed. */
552 reorder_font_vector (font_group
, face
->ascii_face
->font
);
554 /* Find a spec matching with the charset ID to try at
556 for (i
= 0; i
< ASIZE (vec
); i
++)
558 Lisp_Object repertory
;
560 rfont_def
= AREF (vec
, i
);
561 if (NILP (rfont_def
))
563 repertory
= FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def
));
565 if (XINT (repertory
) == id
)
573 /* Find the first available font in the vector of RFONT-DEF. */
574 for (i
= 0; i
< ASIZE (vec
); i
++)
576 Lisp_Object font_def
;
577 Lisp_Object font_entity
, font_object
;
582 if (charset_matched
> 0)
584 /* Try the element matching with the charset ID at first. */
585 found_index
= charset_matched
;
586 /* Make this negative so that we don't come here in the
588 charset_matched
= - charset_matched
;
589 /* We must try the first element in the next loop. */
593 else if (i
== - charset_matched
)
595 /* We have already tried this element and the followings
596 that have the same font specifications in the first
597 iteration. So, skip them all. */
598 rfont_def
= AREF (vec
, i
);
599 font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
600 for (; i
+ 1 < ASIZE (vec
); i
++)
602 rfont_def
= AREF (vec
, i
+ 1);
603 if (NILP (rfont_def
))
605 if (! EQ (RFONT_DEF_FONT_DEF (rfont_def
), font_def
))
611 rfont_def
= AREF (vec
, found_index
);
612 if (NILP (rfont_def
))
616 /* This is a sign of not to try the other fonts. */
619 if (INTEGERP (RFONT_DEF_FACE (rfont_def
))
620 && XINT (RFONT_DEF_FACE (rfont_def
)) < 0)
621 /* We couldn't open this font last time. */
624 font_object
= RFONT_DEF_OBJECT (rfont_def
);
625 if (NILP (font_object
))
627 font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
630 /* We have not yet opened the font. */
632 /* Find a font best-matching with the spec without checking
633 the support of the character C. That checking is costly,
634 and even without the checking, the found font supports C
635 in high possibility. */
636 font_entity
= font_find_for_lface (f
, face
->lface
,
637 FONT_DEF_SPEC (font_def
), -1);
638 if (NILP (font_entity
))
640 /* Record that no font matches the spec. */
641 RFONT_DEF_SET_FACE (rfont_def
, -1);
644 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
645 FONT_DEF_SPEC (font_def
));
646 if (NILP (font_object
))
648 /* Something strange happened, perhaps because of a
649 Font-backend problem. Too avoid crashing, record
650 that this spec is unusable. It may be better to find
651 another font of the same spec, but currently we don't
653 RFONT_DEF_SET_FACE (rfont_def
, -1);
656 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
659 if (font_has_char (f
, font_object
, c
))
662 /* Find a font already opened, matching with the current spec,
664 font_def
= RFONT_DEF_FONT_DEF (rfont_def
);
665 for (; found_index
+ 1 < ASIZE (vec
); found_index
++)
667 rfont_def
= AREF (vec
, found_index
+ 1);
668 if (NILP (rfont_def
))
670 if (! EQ (RFONT_DEF_FONT_DEF (rfont_def
), font_def
))
672 font_object
= RFONT_DEF_OBJECT (rfont_def
);
673 if (! NILP (font_object
) && font_has_char (f
, font_object
, c
))
680 /* Find a font-entity with the current spec and supporting C. */
681 font_entity
= font_find_for_lface (f
, face
->lface
,
682 FONT_DEF_SPEC (font_def
), c
);
683 if (! NILP (font_entity
))
685 /* We found a font. Open it and insert a new element for
690 font_object
= font_open_for_lface (f
, font_entity
, face
->lface
,
692 if (NILP (font_object
))
694 RFONT_DEF_NEW (rfont_def
, font_def
);
695 RFONT_DEF_SET_OBJECT (rfont_def
, font_object
);
696 RFONT_DEF_SET_SCORE (rfont_def
, RFONT_DEF_SCORE (rfont_def
));
697 new_vec
= Fmake_vector (make_number (ASIZE (vec
) + 1), Qnil
);
699 for (j
= 0; j
< found_index
; j
++)
700 ASET (new_vec
, j
, AREF (vec
, j
));
701 ASET (new_vec
, j
, rfont_def
);
702 for (j
++; j
< ASIZE (new_vec
); j
++)
703 ASET (new_vec
, j
, AREF (vec
, j
- 1));
704 XSETCDR (font_group
, new_vec
);
712 FONTSET_SET (fontset
, make_number (c
), make_number (0));
716 if (fallback
&& found_index
> 0)
718 /* The order of fonts in the fallback font-group is not that
719 important, and it is better to move the found font to the
720 first of the group so that the next try will find it
722 for (i
= found_index
; i
> 0; i
--)
723 ASET (vec
, i
, AREF (vec
, i
- 1));
724 ASET (vec
, 0, rfont_def
);
731 fontset_font (Lisp_Object fontset
, int c
, struct face
*face
, int id
)
733 Lisp_Object rfont_def
, default_rfont_def
IF_LINT (= Qnil
);
734 Lisp_Object base_fontset
;
736 /* Try a font-group of FONTSET. */
737 FONT_DEFERRED_LOG ("current fontset: font for", make_number (c
), Qnil
);
738 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 0);
739 if (VECTORP (rfont_def
))
741 if (NILP (rfont_def
))
742 FONTSET_SET (fontset
, make_number (c
), make_number (0));
744 /* Try a font-group of the default fontset. */
745 base_fontset
= FONTSET_BASE (fontset
);
746 if (! EQ (base_fontset
, Vdefault_fontset
))
748 if (NILP (FONTSET_DEFAULT (fontset
)))
751 make_fontset (FONTSET_FRAME (fontset
), Qnil
, Vdefault_fontset
));
752 FONT_DEFERRED_LOG ("default fontset: font for", make_number (c
), Qnil
);
754 = fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 0);
755 if (VECTORP (default_rfont_def
))
756 return default_rfont_def
;
757 if (NILP (default_rfont_def
))
758 FONTSET_SET (FONTSET_DEFAULT (fontset
), make_number (c
),
762 /* Try a fallback font-group of FONTSET. */
763 if (! EQ (rfont_def
, Qt
))
765 FONT_DEFERRED_LOG ("current fallback: font for", make_number (c
), Qnil
);
766 rfont_def
= fontset_find_font (fontset
, c
, face
, id
, 1);
767 if (VECTORP (rfont_def
))
769 /* Remember that FONTSET has no font for C. */
770 FONTSET_SET (fontset
, make_number (c
), Qt
);
773 /* Try a fallback font-group of the default fontset. */
774 if (! EQ (base_fontset
, Vdefault_fontset
)
775 && ! EQ (default_rfont_def
, Qt
))
777 FONT_DEFERRED_LOG ("default fallback: font for", make_number (c
), Qnil
);
778 rfont_def
= fontset_find_font (FONTSET_DEFAULT (fontset
), c
, face
, id
, 1);
779 if (VECTORP (rfont_def
))
781 /* Remember that the default fontset has no font for C. */
782 FONTSET_SET (FONTSET_DEFAULT (fontset
), make_number (c
), Qt
);
788 /* Return a newly created fontset with NAME. If BASE is nil, make a
789 base fontset. Otherwise make a realized fontset whose base is
793 make_fontset (Lisp_Object frame
, Lisp_Object name
, Lisp_Object base
)
796 int size
= ASIZE (Vfontset_table
);
797 int id
= next_fontset_id
;
799 /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
800 the next available fontset ID. So it is expected that this loop
801 terminates quickly. In addition, as the last element of
802 Vfontset_table is always nil, we don't have to check the range of
804 while (!NILP (AREF (Vfontset_table
, id
))) id
++;
807 Vfontset_table
= larger_vector (Vfontset_table
, 1, -1);
809 fontset
= Fmake_char_table (Qfontset
, Qnil
);
811 set_fontset_id (fontset
, make_number (id
));
813 set_fontset_name (fontset
, name
);
816 set_fontset_name (fontset
, Qnil
);
817 set_fontset_frame (fontset
, frame
);
818 set_fontset_base (fontset
, base
);
821 ASET (Vfontset_table
, id
, fontset
);
822 next_fontset_id
= id
+ 1;
827 /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
829 /* Return the name of the fontset who has ID. */
832 fontset_name (int id
)
836 fontset
= FONTSET_FROM_ID (id
);
837 return FONTSET_NAME (fontset
);
841 /* Return the ASCII font name of the fontset who has ID. */
844 fontset_ascii (int id
)
846 Lisp_Object fontset
, elt
;
848 fontset
= FONTSET_FROM_ID (id
);
849 elt
= FONTSET_ASCII (fontset
);
855 /* Free fontset of FACE defined on frame F. Called from
856 free_realized_face. */
859 free_face_fontset (struct frame
*f
, struct face
*face
)
863 fontset
= FONTSET_FROM_ID (face
->fontset
);
866 eassert (! BASE_FONTSET_P (fontset
));
867 eassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
868 ASET (Vfontset_table
, face
->fontset
, Qnil
);
869 if (face
->fontset
< next_fontset_id
)
870 next_fontset_id
= face
->fontset
;
871 if (! NILP (FONTSET_DEFAULT (fontset
)))
873 int id
= XINT (FONTSET_ID (FONTSET_DEFAULT (fontset
)));
875 fontset
= AREF (Vfontset_table
, id
);
876 eassert (!NILP (fontset
) && ! BASE_FONTSET_P (fontset
));
877 eassert (f
== XFRAME (FONTSET_FRAME (fontset
)));
878 ASET (Vfontset_table
, id
, Qnil
);
879 if (id
< next_fontset_id
)
880 next_fontset_id
= face
->fontset
;
885 /* Return ID of face suitable for displaying character C at buffer position
886 POS on frame F. FACE must be realized for ASCII characters in advance.
887 Called from the macro FACE_FOR_CHAR. */
890 face_for_char (struct frame
*f
, struct face
*face
, int c
,
891 ptrdiff_t pos
, Lisp_Object object
)
893 Lisp_Object fontset
, rfont_def
, charset
;
897 eassert (fontset_id_valid_p (face
->fontset
));
899 if (ASCII_CHAR_P (c
) || CHAR_BYTE8_P (c
))
900 return face
->ascii_face
->id
;
905 /* Fonts often have characters in other scripts, like symbol, even if they
906 don't match script: symbol. So check if the character is present
907 in the current face first. Only enable for NS for now, but should
908 perhaps be general? */
909 Lisp_Object font_object
;
910 XSETFONT (font_object
, face
->font
);
911 if (font_has_char (f
, font_object
, c
)) return face
->id
;
915 fontset
= FONTSET_FROM_ID (face
->fontset
);
916 eassert (!BASE_FONTSET_P (fontset
));
925 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
926 if (CHARSETP (charset
))
930 val
= assq_no_quit (charset
, Vfont_encoding_charset_alist
);
931 if (CONSP (val
) && CHARSETP (XCDR (val
)))
932 charset
= XCDR (val
);
933 id
= XINT (CHARSET_SYMBOL_ID (charset
));
939 rfont_def
= fontset_font (fontset
, c
, face
, id
);
940 if (VECTORP (rfont_def
))
942 if (INTEGERP (RFONT_DEF_FACE (rfont_def
)))
943 face_id
= XINT (RFONT_DEF_FACE (rfont_def
));
946 Lisp_Object font_object
;
948 font_object
= RFONT_DEF_OBJECT (rfont_def
);
949 face_id
= face_for_font (f
, font_object
, face
);
950 RFONT_DEF_SET_FACE (rfont_def
, face_id
);
955 if (INTEGERP (FONTSET_NOFONT_FACE (fontset
)))
956 face_id
= XINT (FONTSET_NOFONT_FACE (fontset
));
959 face_id
= face_for_font (f
, Qnil
, face
);
960 set_fontset_nofont_face (fontset
, make_number (face_id
));
963 eassert (face_id
>= 0);
969 font_for_char (struct face
*face
, int c
, ptrdiff_t pos
, Lisp_Object object
)
971 Lisp_Object fontset
, rfont_def
, charset
;
974 if (ASCII_CHAR_P (c
))
976 Lisp_Object font_object
;
978 XSETFONT (font_object
, face
->ascii_face
->font
);
982 eassert (fontset_id_valid_p (face
->fontset
));
983 fontset
= FONTSET_FROM_ID (face
->fontset
);
984 eassert (!BASE_FONTSET_P (fontset
));
992 charset
= Fget_char_property (make_number (pos
), Qcharset
, object
);
993 if (CHARSETP (charset
))
997 val
= assq_no_quit (charset
, Vfont_encoding_charset_alist
);
998 if (CONSP (val
) && CHARSETP (XCDR (val
)))
999 charset
= XCDR (val
);
1000 id
= XINT (CHARSET_SYMBOL_ID (charset
));
1006 rfont_def
= fontset_font (fontset
, c
, face
, id
);
1007 return (VECTORP (rfont_def
)
1008 ? RFONT_DEF_OBJECT (rfont_def
)
1013 /* Make a realized fontset for ASCII face FACE on frame F from the
1014 base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
1015 default fontset as the base. Value is the id of the new fontset.
1016 Called from realize_x_face. */
1019 make_fontset_for_ascii_face (struct frame
*f
, int base_fontset_id
, struct face
*face
)
1021 Lisp_Object base_fontset
, fontset
, frame
;
1023 XSETFRAME (frame
, f
);
1024 if (base_fontset_id
>= 0)
1026 base_fontset
= FONTSET_FROM_ID (base_fontset_id
);
1027 if (!BASE_FONTSET_P (base_fontset
))
1028 base_fontset
= FONTSET_BASE (base_fontset
);
1029 eassert (BASE_FONTSET_P (base_fontset
));
1032 base_fontset
= Vdefault_fontset
;
1034 fontset
= make_fontset (frame
, Qnil
, base_fontset
);
1035 return XINT (FONTSET_ID (fontset
));
1040 /* Cache data used by fontset_pattern_regexp. The car part is a
1041 pattern string containing at least one wild card, the cdr part is
1042 the corresponding regular expression. */
1043 static Lisp_Object Vcached_fontset_data
;
1045 #define CACHED_FONTSET_NAME SSDATA (XCAR (Vcached_fontset_data))
1046 #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
1048 /* If fontset name PATTERN contains any wild card, return regular
1049 expression corresponding to PATTERN. */
1052 fontset_pattern_regexp (Lisp_Object pattern
)
1054 if (!strchr (SSDATA (pattern
), '*')
1055 && !strchr (SSDATA (pattern
), '?'))
1056 /* PATTERN does not contain any wild cards. */
1059 if (!CONSP (Vcached_fontset_data
)
1060 || strcmp (SSDATA (pattern
), CACHED_FONTSET_NAME
))
1062 /* We must at first update the cached data. */
1063 unsigned char *regex
, *p0
, *p1
;
1064 int ndashes
= 0, nstars
= 0, nescs
= 0;
1066 for (p0
= SDATA (pattern
); *p0
; p0
++)
1070 else if (*p0
== '*')
1073 || *p0
== '.' || *p0
== '\\'
1074 || *p0
== '+' || *p0
== '^'
1079 /* If PATTERN is not full XLFD we convert "*" to ".*". Otherwise
1080 we convert "*" to "[^-]*" which is much faster in regular
1081 expression matching. */
1082 ptrdiff_t regexsize
= (SBYTES (pattern
)
1083 + (ndashes
< 14 ? 2 : 5) * nstars
1086 p1
= regex
= SAFE_ALLOCA (regexsize
);
1089 for (p0
= SDATA (pattern
); *p0
; p0
++)
1096 *p1
++ = '[', *p1
++ = '^', *p1
++ = '-', *p1
++ = ']';
1099 else if (*p0
== '?')
1102 || *p0
== '.' || *p0
== '\\'
1103 || *p0
== '+' || *p0
== '^'
1105 *p1
++ = '\\', *p1
++ = *p0
;
1112 Vcached_fontset_data
= Fcons (build_string (SSDATA (pattern
)),
1113 build_string ((char *) regex
));
1117 return CACHED_FONTSET_REGEX
;
1120 /* Return ID of the base fontset named NAME. If there's no such
1121 fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
1122 0: pattern containing '*' and '?' as wildcards
1123 1: regular expression
1124 2: literal fontset name
1128 fs_query_fontset (Lisp_Object name
, int name_pattern
)
1133 name
= Fdowncase (name
);
1134 if (name_pattern
!= 1)
1136 tem
= Frassoc (name
, Vfontset_alias_alist
);
1138 tem
= Fassoc (name
, Vfontset_alias_alist
);
1139 if (CONSP (tem
) && STRINGP (XCAR (tem
)))
1141 else if (name_pattern
== 0)
1143 tem
= fontset_pattern_regexp (name
);
1152 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
1154 Lisp_Object fontset
, this_name
;
1156 fontset
= FONTSET_FROM_ID (i
);
1158 || !BASE_FONTSET_P (fontset
))
1161 this_name
= FONTSET_NAME (fontset
);
1162 if (name_pattern
== 1
1163 ? fast_string_match_ignore_case (name
, this_name
) >= 0
1164 : !xstrcasecmp (SSDATA (name
), SSDATA (this_name
)))
1171 DEFUN ("query-fontset", Fquery_fontset
, Squery_fontset
, 1, 2, 0,
1172 doc
: /* Return the name of a fontset that matches PATTERN.
1173 The value is nil if there is no matching fontset.
1174 PATTERN can contain `*' or `?' as a wildcard
1175 just as X font name matching algorithm allows.
1176 If REGEXPP is non-nil, PATTERN is a regular expression. */)
1177 (Lisp_Object pattern
, Lisp_Object regexpp
)
1179 Lisp_Object fontset
;
1182 check_window_system (NULL
);
1184 CHECK_STRING (pattern
);
1186 if (SCHARS (pattern
) == 0)
1189 id
= fs_query_fontset (pattern
, !NILP (regexpp
));
1193 fontset
= FONTSET_FROM_ID (id
);
1194 return FONTSET_NAME (fontset
);
1197 /* Return a list of base fontset names matching PATTERN on frame F. */
1200 list_fontsets (struct frame
*f
, Lisp_Object pattern
, int size
)
1202 Lisp_Object frame
, regexp
, val
;
1205 XSETFRAME (frame
, f
);
1207 regexp
= fontset_pattern_regexp (pattern
);
1210 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1212 Lisp_Object fontset
, name
;
1214 fontset
= FONTSET_FROM_ID (id
);
1216 || !BASE_FONTSET_P (fontset
)
1217 || !EQ (frame
, FONTSET_FRAME (fontset
)))
1219 name
= FONTSET_NAME (fontset
);
1221 if (STRINGP (regexp
)
1222 ? (fast_string_match (regexp
, name
) < 0)
1223 : strcmp (SSDATA (pattern
), SSDATA (name
)))
1226 val
= Fcons (Fcopy_sequence (FONTSET_NAME (fontset
)), val
);
1233 /* Free all realized fontsets whose base fontset is BASE. */
1236 free_realized_fontsets (Lisp_Object base
)
1241 /* For the moment, this doesn't work because free_realized_face
1242 doesn't remove FACE from a cache. Until we find a solution, we
1243 suppress this code, and simply use Fclear_face_cache even though
1244 that is not efficient. */
1246 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1248 Lisp_Object
this = AREF (Vfontset_table
, id
);
1250 if (EQ (FONTSET_BASE (this), base
))
1254 for (tail
= FONTSET_FACE_ALIST (this); CONSP (tail
);
1257 struct frame
*f
= XFRAME (FONTSET_FRAME (this));
1258 int face_id
= XINT (XCDR (XCAR (tail
)));
1259 struct face
*face
= FACE_FROM_ID (f
, face_id
);
1261 /* Face THIS itself is also freed by the following call. */
1262 free_realized_face (f
, face
);
1268 /* But, we don't have to call Fclear_face_cache if no fontset has
1269 been realized from BASE. */
1270 for (id
= 0; id
< ASIZE (Vfontset_table
); id
++)
1272 Lisp_Object
this = AREF (Vfontset_table
, id
);
1274 if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base
))
1276 Fclear_face_cache (Qt
);
1284 /* Check validity of NAME as a fontset name and return the
1285 corresponding fontset. If not valid, signal an error.
1287 If NAME is t, return Vdefault_fontset. If NAME is nil, return the
1290 Set *FRAME to the actual frame. */
1293 check_fontset_name (Lisp_Object name
, Lisp_Object
*frame
)
1296 struct frame
*f
= decode_live_frame (*frame
);
1298 XSETFRAME (*frame
, f
);
1301 return Vdefault_fontset
;
1303 id
= FRAME_FONTSET (f
);
1306 CHECK_STRING (name
);
1307 /* First try NAME as literal. */
1308 id
= fs_query_fontset (name
, 2);
1310 /* For backward compatibility, try again NAME as pattern. */
1311 id
= fs_query_fontset (name
, 0);
1313 error ("Fontset `%s' does not exist", SDATA (name
));
1315 return FONTSET_FROM_ID (id
);
1319 accumulate_script_ranges (Lisp_Object arg
, Lisp_Object range
, Lisp_Object val
)
1321 if (EQ (XCAR (arg
), val
))
1324 XSETCDR (arg
, Fcons (Fcons (XCAR (range
), XCDR (range
)), XCDR (arg
)));
1326 XSETCDR (arg
, Fcons (Fcons (range
, range
), XCDR (arg
)));
1331 /* Callback function for map_charset_chars in Fset_fontset_font.
1332 ARG is a vector [ FONTSET FONT_DEF ADD ASCII SCRIPT_RANGE_LIST ].
1334 In FONTSET, set FONT_DEF in a fashion specified by ADD for
1335 characters in RANGE and ranges in SCRIPT_RANGE_LIST before RANGE.
1336 The consumed ranges are popped up from SCRIPT_RANGE_LIST, and the
1337 new SCRIPT_RANGE_LIST is stored in ARG.
1339 If ASCII is nil, don't set FONT_DEF for ASCII characters. It is
1340 assured that SCRIPT_RANGE_LIST doesn't contain ASCII in that
1344 set_fontset_font (Lisp_Object arg
, Lisp_Object range
)
1346 Lisp_Object fontset
, font_def
, add
, ascii
, script_range_list
;
1347 int from
= XINT (XCAR (range
)), to
= XINT (XCDR (range
));
1349 fontset
= AREF (arg
, 0);
1350 font_def
= AREF (arg
, 1);
1351 add
= AREF (arg
, 2);
1352 ascii
= AREF (arg
, 3);
1353 script_range_list
= AREF (arg
, 4);
1355 if (NILP (ascii
) && from
< 0x80)
1360 range
= Fcons (make_number (0x80), XCDR (range
));
1363 #define SCRIPT_FROM XINT (XCAR (XCAR (script_range_list)))
1364 #define SCRIPT_TO XINT (XCDR (XCAR (script_range_list)))
1365 #define POP_SCRIPT_RANGE() script_range_list = XCDR (script_range_list)
1367 for (; CONSP (script_range_list
) && SCRIPT_TO
< from
; POP_SCRIPT_RANGE ())
1368 FONTSET_ADD (fontset
, XCAR (script_range_list
), font_def
, add
);
1369 if (CONSP (script_range_list
))
1371 if (SCRIPT_FROM
< from
)
1372 range
= Fcons (make_number (SCRIPT_FROM
), XCDR (range
));
1373 while (CONSP (script_range_list
) && SCRIPT_TO
<= to
)
1374 POP_SCRIPT_RANGE ();
1375 if (CONSP (script_range_list
) && SCRIPT_FROM
<= to
)
1376 XSETCAR (XCAR (script_range_list
), make_number (to
+ 1));
1379 FONTSET_ADD (fontset
, range
, font_def
, add
);
1380 ASET (arg
, 4, script_range_list
);
1383 static void update_auto_fontset_alist (Lisp_Object
, Lisp_Object
);
1386 DEFUN ("set-fontset-font", Fset_fontset_font
, Sset_fontset_font
, 3, 5, 0,
1388 Modify fontset NAME to use FONT-SPEC for TARGET characters.
1390 NAME is a fontset name string, nil for the fontset of FRAME, or t for
1391 the default fontset.
1393 TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
1394 In that case, use FONT-SPEC for all characters in the range FROM and
1397 TARGET may be a script name symbol. In that case, use FONT-SPEC for
1398 all characters that belong to the script.
1400 TARGET may be a charset. In that case, use FONT-SPEC for all
1401 characters in the charset.
1403 TARGET may be nil. In that case, use FONT-SPEC for any characters for
1404 that no FONT-SPEC is specified.
1406 FONT-SPEC may one of these:
1407 * A font-spec object made by the function `font-spec' (which see).
1408 * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
1409 REGISTRY is a font registry name. FAMILY may contain foundry
1410 name, and REGISTRY may contain encoding name.
1411 * A font name string.
1412 * nil, which explicitly specifies that there's no font for TARGET.
1414 Optional 4th argument FRAME is a frame or nil for the selected frame
1415 that is concerned in the case that NAME is nil.
1417 Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
1418 to the font specifications for TARGET previously set. If it is
1419 `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
1420 appended. By default, FONT-SPEC overrides the previous settings. */)
1421 (Lisp_Object name
, Lisp_Object target
, Lisp_Object font_spec
, Lisp_Object frame
, Lisp_Object add
)
1423 Lisp_Object fontset
;
1424 Lisp_Object font_def
, registry
, family
;
1425 Lisp_Object range_list
;
1426 struct charset
*charset
= NULL
;
1427 Lisp_Object fontname
;
1428 bool ascii_changed
= 0;
1430 fontset
= check_fontset_name (name
, &frame
);
1433 if (CONSP (font_spec
))
1435 Lisp_Object spec
= Ffont_spec (0, NULL
);
1437 font_parse_family_registry (XCAR (font_spec
), XCDR (font_spec
), spec
);
1439 fontname
= Ffont_xlfd_name (font_spec
, Qnil
);
1441 else if (STRINGP (font_spec
))
1443 Lisp_Object args
[2];
1445 fontname
= font_spec
;
1447 args
[1] = font_spec
;
1448 font_spec
= Ffont_spec (2, args
);
1450 else if (FONT_SPEC_P (font_spec
))
1451 fontname
= Ffont_xlfd_name (font_spec
, Qnil
);
1452 else if (! NILP (font_spec
))
1453 Fsignal (Qfont
, list2 (build_string ("Invalid font-spec"), font_spec
));
1455 if (! NILP (font_spec
))
1457 Lisp_Object encoding
, repertory
;
1459 family
= AREF (font_spec
, FONT_FAMILY_INDEX
);
1460 if (! NILP (family
) )
1461 family
= SYMBOL_NAME (family
);
1462 registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1463 if (! NILP (registry
))
1464 registry
= Fdowncase (SYMBOL_NAME (registry
));
1465 AUTO_STRING (dash
, "-");
1466 encoding
= find_font_encoding (concat3 (family
, dash
, registry
));
1467 if (NILP (encoding
))
1470 if (SYMBOLP (encoding
))
1472 CHECK_CHARSET (encoding
);
1473 encoding
= repertory
= CHARSET_SYMBOL_ID (encoding
);
1477 repertory
= XCDR (encoding
);
1478 encoding
= XCAR (encoding
);
1479 CHECK_CHARSET (encoding
);
1480 encoding
= CHARSET_SYMBOL_ID (encoding
);
1481 if (! NILP (repertory
) && SYMBOLP (repertory
))
1483 CHECK_CHARSET (repertory
);
1484 repertory
= CHARSET_SYMBOL_ID (repertory
);
1487 FONT_DEF_NEW (font_def
, font_spec
, encoding
, repertory
);
1492 if (CHARACTERP (target
))
1494 if (XFASTINT (target
) < 0x80)
1495 error ("Can't set a font for partial ASCII range");
1496 range_list
= list1 (Fcons (target
, target
));
1498 else if (CONSP (target
))
1500 Lisp_Object from
, to
;
1502 from
= Fcar (target
);
1504 CHECK_CHARACTER (from
);
1505 CHECK_CHARACTER (to
);
1506 if (XFASTINT (from
) < 0x80)
1508 if (XFASTINT (from
) != 0 || XFASTINT (to
) < 0x7F)
1509 error ("Can't set a font for partial ASCII range");
1512 range_list
= list1 (target
);
1514 else if (SYMBOLP (target
) && !NILP (target
))
1516 Lisp_Object script_list
;
1520 script_list
= XCHAR_TABLE (Vchar_script_table
)->extras
[0];
1521 if (! NILP (Fmemq (target
, script_list
)))
1523 if (EQ (target
, Qlatin
))
1525 val
= list1 (target
);
1526 map_char_table (accumulate_script_ranges
, Qnil
, Vchar_script_table
,
1528 range_list
= Fnreverse (XCDR (val
));
1530 if (CHARSETP (target
))
1532 CHECK_CHARSET_GET_CHARSET (target
, charset
);
1533 if (charset
->ascii_compatible_p
)
1536 else if (NILP (range_list
))
1537 error ("Invalid script or charset name: %s",
1538 SDATA (SYMBOL_NAME (target
)));
1540 else if (NILP (target
))
1541 range_list
= list1 (Qnil
);
1543 error ("Invalid target for setting a font");
1549 if (NILP (font_spec
))
1550 error ("Can't set ASCII font to nil");
1551 val
= CHAR_TABLE_REF (fontset
, 0);
1552 if (! NILP (val
) && EQ (add
, Qappend
))
1553 /* We are going to change just an additional font for ASCII. */
1561 arg
= make_uninit_vector (5);
1562 ASET (arg
, 0, fontset
);
1563 ASET (arg
, 1, font_def
);
1565 ASET (arg
, 3, ascii_changed
? Qt
: Qnil
);
1566 ASET (arg
, 4, range_list
);
1568 map_charset_chars (set_fontset_font
, Qnil
, arg
, charset
,
1569 CHARSET_MIN_CODE (charset
),
1570 CHARSET_MAX_CODE (charset
));
1571 range_list
= AREF (arg
, 4);
1573 for (; CONSP (range_list
); range_list
= XCDR (range_list
))
1574 FONTSET_ADD (fontset
, XCAR (range_list
), font_def
, add
);
1578 Lisp_Object tail
, fr
;
1579 int fontset_id
= XINT (FONTSET_ID (fontset
));
1581 set_fontset_ascii (fontset
, fontname
);
1582 name
= FONTSET_NAME (fontset
);
1583 FOR_EACH_FRAME (tail
, fr
)
1585 struct frame
*f
= XFRAME (fr
);
1586 Lisp_Object font_object
;
1589 if (FRAME_INITIAL_P (f
) || FRAME_TERMCAP_P (f
))
1591 if (fontset_id
!= FRAME_FONTSET (f
))
1593 face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
1595 font_object
= font_load_for_lface (f
, face
->lface
, font_spec
);
1597 font_object
= font_open_by_spec (f
, font_spec
);
1598 if (! NILP (font_object
))
1600 update_auto_fontset_alist (font_object
, fontset
);
1601 AUTO_FRAME_ARG (arg
, Qfont
, Fcons (name
, font_object
));
1602 Fmodify_frame_parameters (fr
, arg
);
1607 /* Free all realized fontsets whose base is FONTSET. This way, the
1608 specified character(s) are surely redisplayed by a correct
1610 free_realized_fontsets (fontset
);
1616 DEFUN ("new-fontset", Fnew_fontset
, Snew_fontset
, 2, 2, 0,
1617 doc
: /* Create a new fontset NAME from font information in FONTLIST.
1619 FONTLIST is an alist of scripts vs the corresponding font specification list.
1620 Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
1621 character of SCRIPT is displayed by a font that matches one of
1624 SCRIPT is a symbol that appears in the first extra slot of the
1625 char-table `char-script-table'.
1627 FONT-SPEC is a vector, a cons, or a string. See the documentation of
1628 `set-fontset-font' for the meaning. */)
1629 (Lisp_Object name
, Lisp_Object fontlist
)
1631 Lisp_Object fontset
;
1634 CHECK_STRING (name
);
1635 CHECK_LIST (fontlist
);
1637 name
= Fdowncase (name
);
1638 id
= fs_query_fontset (name
, 0);
1641 Lisp_Object font_spec
= Ffont_spec (0, NULL
);
1642 Lisp_Object short_name
;
1646 if (font_parse_xlfd (SSDATA (name
), SBYTES (name
), font_spec
) < 0)
1647 error ("Fontset name must be in XLFD format");
1648 short_name
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1649 if (strncmp (SSDATA (SYMBOL_NAME (short_name
)), "fontset-", 8)
1650 || SBYTES (SYMBOL_NAME (short_name
)) < 9)
1651 error ("Registry field of fontset name must be \"fontset-*\"");
1652 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (short_name
)),
1653 Vfontset_alias_alist
);
1654 ASET (font_spec
, FONT_REGISTRY_INDEX
, Qiso8859_1
);
1655 fontset
= make_fontset (Qnil
, name
, Qnil
);
1656 len
= font_unparse_xlfd (font_spec
, 0, xlfd
, 256);
1658 error ("Invalid fontset name (perhaps too long): %s", SDATA (name
));
1659 set_fontset_ascii (fontset
, make_unibyte_string (xlfd
, len
));
1663 fontset
= FONTSET_FROM_ID (id
);
1664 free_realized_fontsets (fontset
);
1665 Fset_char_table_range (fontset
, Qt
, Qnil
);
1668 for (; CONSP (fontlist
); fontlist
= XCDR (fontlist
))
1670 Lisp_Object elt
, script
;
1672 elt
= XCAR (fontlist
);
1673 script
= Fcar (elt
);
1675 if (CONSP (elt
) && (NILP (XCDR (elt
)) || CONSP (XCDR (elt
))))
1676 for (; CONSP (elt
); elt
= XCDR (elt
))
1677 Fset_fontset_font (name
, script
, XCAR (elt
), Qnil
, Qappend
);
1679 Fset_fontset_font (name
, script
, elt
, Qnil
, Qappend
);
1685 /* Alist of automatically created fontsets. Each element is a cons
1686 (FONT-SPEC . FONTSET-ID). */
1687 static Lisp_Object auto_fontset_alist
;
1689 /* Number of automatically created fontsets. */
1690 static ptrdiff_t num_auto_fontsets
;
1692 /* Return a fontset synthesized from FONT-OBJECT. This is called from
1693 x_new_font when FONT-OBJECT is used for the default ASCII font of a
1694 frame, and the returned fontset is used for the default fontset of
1695 that frame. The fontset specifies a font of the same registry as
1696 FONT-OBJECT for all characters in the repertory of the registry
1697 (see Vfont_encoding_alist). If the repertory is not known, the
1698 fontset specifies the font for all Latin characters assuming that a
1699 user intends to use FONT-OBJECT for Latin characters. */
1702 fontset_from_font (Lisp_Object font_object
)
1704 Lisp_Object font_name
= font_get_name (font_object
);
1705 Lisp_Object font_spec
= copy_font_spec (font_object
);
1706 Lisp_Object registry
= AREF (font_spec
, FONT_REGISTRY_INDEX
);
1707 Lisp_Object fontset_spec
, alias
, name
, fontset
;
1710 val
= assoc_no_quit (font_spec
, auto_fontset_alist
);
1712 return XINT (FONTSET_ID (XCDR (val
)));
1713 if (num_auto_fontsets
++ == 0)
1714 alias
= intern ("fontset-startup");
1717 char temp
[sizeof "fontset-auto" + INT_STRLEN_BOUND (ptrdiff_t)];
1719 sprintf (temp
, "fontset-auto%"pD
"d", num_auto_fontsets
- 1);
1720 alias
= intern (temp
);
1722 fontset_spec
= copy_font_spec (font_spec
);
1723 ASET (fontset_spec
, FONT_REGISTRY_INDEX
, alias
);
1724 name
= Ffont_xlfd_name (fontset_spec
, Qnil
);
1725 eassert (!NILP (name
));
1726 fontset
= make_fontset (Qnil
, name
, Qnil
);
1727 Vfontset_alias_alist
= Fcons (Fcons (name
, SYMBOL_NAME (alias
)),
1728 Vfontset_alias_alist
);
1729 alias
= Fdowncase (AREF (font_object
, FONT_NAME_INDEX
));
1730 Vfontset_alias_alist
= Fcons (Fcons (name
, alias
), Vfontset_alias_alist
);
1731 auto_fontset_alist
= Fcons (Fcons (font_spec
, fontset
), auto_fontset_alist
);
1732 font_spec
= Ffont_spec (0, NULL
);
1733 ASET (font_spec
, FONT_REGISTRY_INDEX
, registry
);
1735 Lisp_Object target
= find_font_encoding (SYMBOL_NAME (registry
));
1738 target
= XCDR (target
);
1739 if (! CHARSETP (target
))
1741 Fset_fontset_font (name
, target
, font_spec
, Qnil
, Qnil
);
1742 Fset_fontset_font (name
, Qnil
, font_spec
, Qnil
, Qnil
);
1745 set_fontset_ascii (fontset
, font_name
);
1747 return XINT (FONTSET_ID (fontset
));
1751 /* Update auto_fontset_alist for FONTSET. When an ASCII font of
1752 FONTSET is changed, we delete an entry of FONTSET if any from
1753 auto_fontset_alist so that FONTSET is not re-used by
1754 fontset_from_font. */
1757 update_auto_fontset_alist (Lisp_Object font_object
, Lisp_Object fontset
)
1759 Lisp_Object prev
, tail
;
1761 for (prev
= Qnil
, tail
= auto_fontset_alist
; CONSP (tail
);
1762 prev
= tail
, tail
= XCDR (tail
))
1763 if (EQ (fontset
, XCDR (XCAR (tail
))))
1766 auto_fontset_alist
= XCDR (tail
);
1768 XSETCDR (prev
, XCDR (tail
));
1774 /* Return a cons (FONT-OBJECT . GLYPH-CODE).
1775 FONT-OBJECT is the font for the character at POSITION in the current
1776 buffer. This is computed from all the text properties and overlays
1777 that apply to POSITION. POSITION may be nil, in which case,
1778 FONT-SPEC is the font for displaying the character CH with the
1781 GLYPH-CODE is the glyph code in the font to use for the character.
1783 If the 2nd optional arg CH is non-nil, it is a character to check
1784 the font instead of the character at POSITION.
1786 It returns nil in the following cases:
1788 (1) The window system doesn't have a font for the character (thus
1789 it is displayed by an empty box).
1791 (2) The character code is invalid.
1793 (3) If POSITION is not nil, and the current buffer is not displayed
1796 In addition, the returned font name may not take into account of
1797 such redisplay engine hooks as what used in jit-lock-mode if
1798 POSITION is currently not visible. */
1801 DEFUN ("internal-char-font", Finternal_char_font
, Sinternal_char_font
, 1, 2, 0,
1802 doc
: /* For internal use only. */)
1803 (Lisp_Object position
, Lisp_Object ch
)
1805 ptrdiff_t pos
, pos_byte
, dummy
;
1811 if (NILP (position
))
1813 CHECK_CHARACTER (ch
);
1815 f
= XFRAME (selected_frame
);
1816 face_id
= lookup_basic_face (f
, DEFAULT_FACE_ID
);
1824 CHECK_NUMBER_COERCE_MARKER (position
);
1825 if (! (BEGV
<= XINT (position
) && XINT (position
) < ZV
))
1826 args_out_of_range_3 (position
, make_number (BEGV
), make_number (ZV
));
1827 pos
= XINT (position
);
1828 pos_byte
= CHAR_TO_BYTE (pos
);
1830 c
= FETCH_CHAR (pos_byte
);
1836 window
= Fget_buffer_window (Fcurrent_buffer (), Qnil
);
1839 w
= XWINDOW (window
);
1840 f
= XFRAME (w
->frame
);
1841 face_id
= face_at_buffer_position (w
, pos
, &dummy
,
1844 if (! CHAR_VALID_P (c
))
1846 if (!FRAME_WINDOW_P (f
))
1848 /* We need the basic faces to be valid below, so recompute them if
1849 some code just happened to clear the face cache. */
1850 if (FRAME_FACE_CACHE (f
)->used
== 0)
1851 recompute_basic_faces (f
);
1852 face_id
= FACE_FOR_CHAR (f
, FACE_FROM_ID (f
, face_id
), c
, pos
, Qnil
);
1853 face
= FACE_FROM_ID (f
, face_id
);
1856 unsigned code
= face
->font
->driver
->encode_char (face
->font
, c
);
1857 Lisp_Object font_object
;
1859 if (code
== FONT_INVALID_CODE
)
1861 XSETFONT (font_object
, face
->font
);
1862 return Fcons (font_object
, INTEGER_TO_CONS (code
));
1868 DEFUN ("fontset-info", Ffontset_info
, Sfontset_info
, 1, 2, 0,
1869 doc
: /* Return information about a fontset FONTSET on frame FRAME.
1871 FONTSET is a fontset name string, nil for the fontset of FRAME, or t
1872 for the default fontset. FRAME nil means the selected frame.
1874 The value is a char-table whose elements have this form:
1876 ((FONT OPENED-FONT ...) ...)
1878 FONT is a name of font specified for a range of characters.
1880 OPENED-FONT is a name of a font actually opened.
1882 The char-table has one extra slot. If FONTSET is not the default
1883 fontset, the value the extra slot is a char-table containing the
1884 information about the derived fonts from the default fontset. The
1885 format is the same as above. */)
1886 (Lisp_Object fontset
, Lisp_Object frame
)
1888 Lisp_Object
*realized
[2], fontsets
[2], tables
[2];
1889 Lisp_Object val
, elt
;
1892 check_window_system (NULL
);
1893 fontset
= check_fontset_name (fontset
, &frame
);
1895 /* Recode fontsets realized on FRAME from the base fontset FONTSET
1896 in the table `realized'. */
1898 SAFE_ALLOCA_LISP (realized
[0], 2 * ASIZE (Vfontset_table
));
1899 realized
[1] = realized
[0] + ASIZE (Vfontset_table
);
1900 for (i
= j
= 0; i
< ASIZE (Vfontset_table
); i
++)
1902 elt
= FONTSET_FROM_ID (i
);
1904 && EQ (FONTSET_BASE (elt
), fontset
)
1905 && EQ (FONTSET_FRAME (elt
), frame
))
1906 realized
[0][j
++] = elt
;
1908 realized
[0][j
] = Qnil
;
1910 for (i
= j
= 0; ! NILP (realized
[0][i
]); i
++)
1912 elt
= FONTSET_DEFAULT (realized
[0][i
]);
1914 realized
[1][j
++] = elt
;
1916 realized
[1][j
] = Qnil
;
1918 tables
[0] = Fmake_char_table (Qfontset_info
, Qnil
);
1919 fontsets
[0] = fontset
;
1920 if (!EQ (fontset
, Vdefault_fontset
))
1922 tables
[1] = Fmake_char_table (Qnil
, Qnil
);
1923 set_char_table_extras (tables
[0], 0, tables
[1]);
1924 fontsets
[1] = Vdefault_fontset
;
1927 /* Accumulate information of the fontset in TABLE. The format of
1928 each element is ((FONT-SPEC OPENED-FONT ...) ...). */
1929 for (k
= 0; k
<= 1; k
++)
1931 for (c
= 0; c
<= MAX_CHAR
; )
1933 int from
= c
, to
= MAX_5_BYTE_CHAR
;
1935 if (c
<= MAX_5_BYTE_CHAR
)
1937 val
= char_table_ref_and_range (fontsets
[k
], c
, &from
, &to
);
1941 val
= FONTSET_FALLBACK (fontsets
[k
]);
1948 /* At first, set ALIST to ((FONT-SPEC) ...). */
1949 for (alist
= Qnil
, i
= 0; i
< ASIZE (val
); i
++)
1950 if (! NILP (AREF (val
, i
)))
1951 alist
= Fcons (Fcons (FONT_DEF_SPEC (AREF (val
, i
)), Qnil
),
1953 alist
= Fnreverse (alist
);
1955 /* Then store opened font names to cdr of each elements. */
1956 for (i
= 0; ! NILP (realized
[k
][i
]); i
++)
1958 if (c
<= MAX_5_BYTE_CHAR
)
1959 val
= FONTSET_REF (realized
[k
][i
], c
);
1961 val
= FONTSET_FALLBACK (realized
[k
][i
]);
1962 if (! CONSP (val
) || ! VECTORP (XCDR (val
)))
1964 /* VAL: (int . [[FACE-ID FONT-DEF FONT-OBJECT int] ... ]) */
1966 for (j
= 0; j
< ASIZE (val
); j
++)
1968 elt
= AREF (val
, j
);
1969 if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt
)))
1971 Lisp_Object font_object
= RFONT_DEF_OBJECT (elt
);
1972 Lisp_Object slot
, name
;
1974 slot
= Fassq (RFONT_DEF_SPEC (elt
), alist
);
1975 name
= AREF (font_object
, FONT_NAME_INDEX
);
1976 if (NILP (Fmember (name
, XCDR (slot
))))
1977 nconc2 (slot
, list1 (name
));
1982 /* Store ALIST in TBL for characters C..TO. */
1983 if (c
<= MAX_5_BYTE_CHAR
)
1984 char_table_set_range (tables
[k
], c
, to
, alist
);
1986 set_char_table_defalt (tables
[k
], alist
);
1988 /* At last, change each elements to font names. */
1989 for (; CONSP (alist
); alist
= XCDR (alist
))
1992 XSETCAR (elt
, Ffont_xlfd_name (XCAR (elt
), Qnil
));
1997 if (EQ (fontset
, Vdefault_fontset
))
2006 DEFUN ("fontset-font", Ffontset_font
, Sfontset_font
, 2, 3, 0,
2007 doc
: /* Return a font name pattern for character CH in fontset NAME.
2008 If NAME is t, find a pattern in the default fontset.
2009 If NAME is nil, find a pattern in the fontset of the selected frame.
2011 The value has the form (FAMILY . REGISTRY), where FAMILY is a font
2012 family name and REGISTRY is a font registry name. This is actually
2013 the first font name pattern for CH in the fontset or in the default
2016 If the 2nd optional arg ALL is non-nil, return a list of all font name
2018 (Lisp_Object name
, Lisp_Object ch
, Lisp_Object all
)
2021 Lisp_Object fontset
, elt
, list
, repertory
, val
;
2026 fontset
= check_fontset_name (name
, &frame
);
2028 CHECK_CHARACTER (ch
);
2033 for (i
= 0, elt
= FONTSET_REF (fontset
, c
); i
< 2;
2034 i
++, elt
= FONTSET_FALLBACK (fontset
))
2036 for (j
= 0; j
< ASIZE (elt
); j
++)
2038 Lisp_Object family
, registry
;
2040 val
= AREF (elt
, j
);
2043 repertory
= AREF (val
, 1);
2044 if (INTEGERP (repertory
))
2046 struct charset
*charset
= CHARSET_FROM_ID (XINT (repertory
));
2048 if (! CHAR_CHARSET_P (c
, charset
))
2051 else if (CHAR_TABLE_P (repertory
))
2053 if (NILP (CHAR_TABLE_REF (repertory
, c
)))
2056 val
= AREF (val
, 0);
2057 /* VAL is a FONT-SPEC */
2058 family
= AREF (val
, FONT_FAMILY_INDEX
);
2059 if (! NILP (family
))
2060 family
= SYMBOL_NAME (family
);
2061 registry
= AREF (val
, FONT_REGISTRY_INDEX
);
2062 if (! NILP (registry
))
2063 registry
= SYMBOL_NAME (registry
);
2064 val
= Fcons (family
, registry
);
2067 list
= Fcons (val
, list
);
2069 if (EQ (fontset
, Vdefault_fontset
))
2071 fontset
= Vdefault_fontset
;
2073 return (Fnreverse (list
));
2076 DEFUN ("fontset-list", Ffontset_list
, Sfontset_list
, 0, 0, 0,
2077 doc
: /* Return a list of all defined fontset names. */)
2080 Lisp_Object fontset
, list
;
2084 for (i
= 0; i
< ASIZE (Vfontset_table
); i
++)
2086 fontset
= FONTSET_FROM_ID (i
);
2088 && BASE_FONTSET_P (fontset
))
2089 list
= Fcons (FONTSET_NAME (fontset
), list
);
2096 #ifdef ENABLE_CHECKING
2098 Lisp_Object
dump_fontset (Lisp_Object
) EXTERNALLY_VISIBLE
;
2101 dump_fontset (Lisp_Object fontset
)
2105 vec
= Fmake_vector (make_number (3), Qnil
);
2106 ASET (vec
, 0, FONTSET_ID (fontset
));
2108 if (BASE_FONTSET_P (fontset
))
2110 ASET (vec
, 1, FONTSET_NAME (fontset
));
2116 frame
= FONTSET_FRAME (fontset
);
2119 struct frame
*f
= XFRAME (frame
);
2121 if (FRAME_LIVE_P (f
))
2123 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)),
2127 Fcons (FONTSET_NAME (FONTSET_BASE (fontset
)), Qnil
));
2129 if (!NILP (FONTSET_DEFAULT (fontset
)))
2130 ASET (vec
, 2, FONTSET_ID (FONTSET_DEFAULT (fontset
)));
2135 DEFUN ("fontset-list-all", Ffontset_list_all
, Sfontset_list_all
, 0, 0, 0,
2136 doc
: /* Return a brief summary of all fontsets for debug use. */)
2142 for (i
= 0, val
= Qnil
; i
< ASIZE (Vfontset_table
); i
++)
2143 if (! NILP (AREF (Vfontset_table
, i
)))
2144 val
= Fcons (dump_fontset (AREF (Vfontset_table
, i
)), val
);
2145 return (Fnreverse (val
));
2147 #endif /* ENABLE_CHECKING */
2150 syms_of_fontset (void)
2152 DEFSYM (Qfontset
, "fontset");
2153 Fput (Qfontset
, Qchar_table_extra_slots
, make_number (8));
2154 DEFSYM (Qfontset_info
, "fontset-info");
2155 Fput (Qfontset_info
, Qchar_table_extra_slots
, make_number (1));
2157 DEFSYM (Qprepend
, "prepend");
2158 DEFSYM (Qappend
, "append");
2159 DEFSYM (Qlatin
, "latin");
2161 Vcached_fontset_data
= Qnil
;
2162 staticpro (&Vcached_fontset_data
);
2164 Vfontset_table
= Fmake_vector (make_number (32), Qnil
);
2165 staticpro (&Vfontset_table
);
2167 Vdefault_fontset
= Fmake_char_table (Qfontset
, Qnil
);
2168 staticpro (&Vdefault_fontset
);
2169 set_fontset_id (Vdefault_fontset
, make_number (0));
2172 build_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"));
2173 ASET (Vfontset_table
, 0, Vdefault_fontset
);
2174 next_fontset_id
= 1;
2176 auto_fontset_alist
= Qnil
;
2177 staticpro (&auto_fontset_alist
);
2179 DEFVAR_LISP ("font-encoding-charset-alist", Vfont_encoding_charset_alist
,
2181 Alist of charsets vs the charsets to determine the preferred font encoding.
2182 Each element looks like (CHARSET . ENCODING-CHARSET),
2183 where ENCODING-CHARSET is a charset registered in the variable
2184 `font-encoding-alist' as ENCODING.
2186 When a text has a property `charset' and the value is CHARSET, a font
2187 whose encoding corresponds to ENCODING-CHARSET is preferred. */);
2188 Vfont_encoding_charset_alist
= Qnil
;
2190 DEFVAR_LISP ("use-default-ascent", Vuse_default_ascent
,
2192 Char table of characters whose ascent values should be ignored.
2193 If an entry for a character is non-nil, the ascent value of the glyph
2194 is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
2196 This affects how a composite character which contains
2197 such a character is displayed on screen. */);
2198 Vuse_default_ascent
= Qnil
;
2200 DEFVAR_LISP ("ignore-relative-composition", Vignore_relative_composition
,
2202 Char table of characters which are not composed relatively.
2203 If an entry for a character is non-nil, a composition sequence
2204 which contains that character is displayed so that
2205 the glyph of that character is put without considering
2206 an ascent and descent value of a previous character. */);
2207 Vignore_relative_composition
= Qnil
;
2209 DEFVAR_LISP ("alternate-fontname-alist", Valternate_fontname_alist
,
2210 doc
: /* Alist of fontname vs list of the alternate fontnames.
2211 When a specified font name is not found, the corresponding
2212 alternate fontnames (if any) are tried instead. */);
2213 Valternate_fontname_alist
= Qnil
;
2215 DEFVAR_LISP ("fontset-alias-alist", Vfontset_alias_alist
,
2216 doc
: /* Alist of fontset names vs the aliases. */);
2217 Vfontset_alias_alist
2218 = list1 (Fcons (FONTSET_NAME (Vdefault_fontset
),
2219 build_pure_c_string ("fontset-default")));
2221 DEFVAR_LISP ("vertical-centering-font-regexp",
2222 Vvertical_centering_font_regexp
,
2223 doc
: /* Regexp matching font names that require vertical centering on display.
2224 When a character is displayed with such fonts, the character is displayed
2225 at the vertical center of lines. */);
2226 Vvertical_centering_font_regexp
= Qnil
;
2228 DEFVAR_LISP ("otf-script-alist", Votf_script_alist
,
2229 doc
: /* Alist of OpenType script tags vs the corresponding script names. */);
2230 Votf_script_alist
= Qnil
;
2232 defsubr (&Squery_fontset
);
2233 defsubr (&Snew_fontset
);
2234 defsubr (&Sset_fontset_font
);
2235 defsubr (&Sinternal_char_font
);
2236 defsubr (&Sfontset_info
);
2237 defsubr (&Sfontset_font
);
2238 defsubr (&Sfontset_list
);
2239 #ifdef ENABLE_CHECKING
2240 defsubr (&Sfontset_list_all
);