1 /* font.c -- "Font" primitives.
2 Copyright (C) 2006 Free Software Foundation, Inc.
4 National Institute of Advanced Industrial Science and Technology (AIST)
5 Registration Number H13PRO009
7 This file is part of GNU Emacs.
9 GNU Emacs is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
32 #include "dispextern.h"
34 #include "character.h"
35 #include "composite.h"
43 #define xassert(X) do {if (!(X)) abort ();} while (0)
45 #define xassert(X) (void) 0
48 int enable_font_backend
;
52 /* Important character set symbols. */
53 Lisp_Object Qiso8859_1
, Qiso10646_1
, Qunicode_bmp
;
55 /* Like CHECK_FONT_SPEC but also validate properties of the font-spec,
56 and set X to the validated result. */
58 #define CHECK_VALIDATE_FONT_SPEC(x) \
60 if (! FONT_SPEC_P (x)) x = wrong_type_argument (Qfont, x); \
61 x = font_prop_validate (x); \
64 /* Number of pt per inch (from the TeXbook). */
65 #define PT_PER_INCH 72.27
67 /* Return a pixel size corresponding to POINT size (1/10 pt unit) on
69 #define POINT_TO_PIXEL(POINT, RESY) ((POINT) * (RESY) / PT_PER_INCH / 10 + 0.5)
71 #define PIXEL_TO_POINT(PIXEL, RESY) ((PIXEL) * PT_PER_INCH * 10 / (RESY) + 0.5)
73 /* Special string of zero length. It is used to specify a NULL name
74 in a font properties (e.g. adstyle). We don't use the symbol of
75 NULL name because it's confusing (Lisp printer prints nothing for
77 Lisp_Object null_string
;
79 /* Special vector of zero length. This is repeatedly used by (struct
80 font_driver *)->list when a specified font is not found. */
81 Lisp_Object null_vector
;
83 /* Vector of 3 elements. Each element is an alist for one of font
84 style properties (weight, slant, width). The alist contains a
85 mapping between symbolic property values (e.g. `medium' for weight)
86 and numeric property values (e.g. 100). So, it looks like this:
87 [((thin . 0) ... (heavy . 210))
88 ((ro . 0) ... (ot . 210))
89 ((ultracondensed . 50) ... (wide . 200))] */
90 static Lisp_Object font_style_table
;
92 /* Alist of font family vs the corresponding aliases.
93 Each element has this form:
94 (FAMILY ALIAS1 ALIAS2 ...) */
96 static Lisp_Object font_family_alist
;
98 /* Symbols representing keys of normal font properties. */
99 extern Lisp_Object QCtype
, QCfamily
, QCweight
, QCslant
, QCwidth
, QCsize
, QCname
;
100 Lisp_Object QCfoundry
, QCadstyle
, QCregistry
, QCextra
;
101 /* Symbols representing keys of font extra info. */
102 Lisp_Object QCotf
, QClanguage
, QCscript
;
104 /* List of all font drivers. All font-backends (XXXfont.c) call
105 add_font_driver in syms_of_XXXfont to register the font-driver
107 static struct font_driver_list
*font_driver_list
;
109 static Lisp_Object prop_name_to_numeric
P_ ((enum font_property_index
,
111 static Lisp_Object prop_numeric_to_name
P_ ((enum font_property_index
, int));
112 static Lisp_Object font_open_entity
P_ ((FRAME_PTR
, Lisp_Object
, int));
114 /* Number of registered font drivers. */
115 static int num_font_drivers
;
117 /* Return a numeric value corresponding to PROP's NAME (symbol). If
118 NAME is not registered in font_style_table, return Qnil. PROP must
119 be one of FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */
122 prop_name_to_numeric (prop
, name
)
123 enum font_property_index prop
;
126 int table_index
= prop
- FONT_WEIGHT_INDEX
;
129 val
= assq_no_quit (name
, AREF (font_style_table
, table_index
));
130 return (NILP (val
) ? Qnil
: XCDR (val
));
134 /* Return a name (symbol) corresponding to PROP's NUMERIC value. If
135 no name is registered for NUMERIC in font_style_table, return a
136 symbol of integer name (e.g. `123'). PROP must be one of
137 FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */
140 prop_numeric_to_name (prop
, numeric
)
141 enum font_property_index prop
;
144 int table_index
= prop
- FONT_WEIGHT_INDEX
;
145 Lisp_Object table
= AREF (font_style_table
, table_index
);
148 while (! NILP (table
))
150 if (XINT (XCDR (XCAR (table
))) >= numeric
)
152 if (XINT (XCDR (XCAR (table
))) == numeric
)
153 return XCAR (XCAR (table
));
157 table
= XCDR (table
);
159 sprintf (buf
, "%d", numeric
);
164 /* Return a symbol whose name is STR (length LEN). If STR contains
165 uppercase letters, downcase them in advance. */
168 intern_downcase (str
, len
)
175 for (i
= 0; i
< len
; i
++)
176 if (isupper (str
[i
]))
179 return Fintern (make_unibyte_string (str
, len
), Qnil
);
182 return Fintern (null_string
, Qnil
);
183 bcopy (str
, buf
, len
);
185 if (isascii (buf
[i
]))
186 buf
[i
] = tolower (buf
[i
]);
187 return Fintern (make_unibyte_string (buf
, len
), Qnil
);
190 extern Lisp_Object Vface_alternative_font_family_alist
;
193 build_font_family_alist ()
195 Lisp_Object alist
= Vface_alternative_font_family_alist
;
197 for (; CONSP (alist
); alist
= XCDR (alist
))
199 Lisp_Object tail
, elt
;
201 for (tail
= XCAR (alist
), elt
= Qnil
; CONSP (tail
); tail
= XCDR (tail
))
202 elt
= nconc2 (elt
, Fcons (Fintern (XCAR (tail
), Qnil
), Qnil
));
203 font_family_alist
= Fcons (elt
, font_family_alist
);
208 /* Font property validater. */
211 font_prop_validate_type (prop
, val
)
212 enum font_property_index prop
;
215 return (SYMBOLP (val
) ? val
: Qerror
);
219 font_prop_validate_symbol (prop
, val
)
220 enum font_property_index prop
;
224 val
= (SCHARS (val
) == 0 ? null_string
225 : intern_downcase ((char *) SDATA (val
), SBYTES (val
)));
226 else if (SYMBOLP (val
))
228 if (SCHARS (SYMBOL_NAME (val
)) == 0)
237 font_prop_validate_style (prop
, val
)
238 enum font_property_index prop
;
241 if (! INTEGERP (val
))
244 val
= intern_downcase ((char *) SDATA (val
), SBYTES (val
));
249 val
= prop_name_to_numeric (prop
, val
);
258 font_prop_validate_size (prop
, val
)
259 enum font_property_index prop
;
262 return (NATNUMP (val
) || (FLOATP (val
) && XFLOAT_DATA (val
) >= 0)
267 font_prop_validate_extra (prop
, val
)
268 enum font_property_index prop
;
273 for (tail
= val
; CONSP (tail
); tail
= XCDR (tail
))
275 Lisp_Object key
= Fcar (XCAR (tail
)), this_val
= Fcdr (XCAR (tail
));
279 if (EQ (key
, QClanguage
))
280 if (! SYMBOLP (this_val
))
282 for (; CONSP (this_val
); this_val
= XCDR (this_val
))
283 if (! SYMBOLP (XCAR (this_val
)))
285 if (! NILP (this_val
))
289 if (! STRINGP (this_val
))
292 return (NILP (tail
) ? val
: Qerror
);
299 Lisp_Object (*validater
) P_ ((enum font_property_index prop
,
301 } font_property_table
[FONT_SPEC_MAX
] =
302 { { &QCtype
, font_prop_validate_type
},
303 { &QCfoundry
, font_prop_validate_symbol
},
304 { &QCfamily
, font_prop_validate_symbol
},
305 { &QCadstyle
, font_prop_validate_symbol
},
306 { &QCregistry
, font_prop_validate_symbol
},
307 { &QCweight
, font_prop_validate_style
},
308 { &QCslant
, font_prop_validate_style
},
309 { &QCwidth
, font_prop_validate_style
},
310 { &QCsize
, font_prop_validate_size
},
311 { &QCextra
, font_prop_validate_extra
}
314 static enum font_property_index
315 check_font_prop_name (key
)
318 enum font_property_index i
;
320 for (i
= FONT_TYPE_INDEX
; i
< FONT_SPEC_MAX
; i
++)
321 if (EQ (key
, *font_property_table
[i
].key
))
327 font_prop_validate (spec
)
330 enum font_property_index i
;
333 for (i
= FONT_TYPE_INDEX
; i
<= FONT_EXTRA_INDEX
; i
++)
335 if (! NILP (AREF (spec
, i
)))
337 val
= (font_property_table
[i
].validater
) (i
, AREF (spec
, i
));
338 if (EQ (val
, Qerror
))
339 Fsignal (Qerror
, list3 (build_string ("invalid font property"),
340 *font_property_table
[i
].key
,
349 /* Font name parser and unparser */
351 /* An enumerator for each field of an XLFD font name. */
353 enum xlfd_field_index
361 XLFD_PIXEL_SIZE_INDEX
,
362 XLFD_POINT_SIZE_INDEX
,
372 /* Return a symbol interned by string at STR and bytes LEN.
373 If LEN == 0, return a null string.
374 If the string is "*", return Qnil.
375 It is assured that LEN < 256. */
378 intern_font_field (f
, xlfd
)
379 char *f
[XLFD_LAST_INDEX
+ 1];
382 char *str
= f
[xlfd
] + 1;
385 if (xlfd
!= XLFD_RESY_INDEX
)
386 len
= f
[xlfd
+ 1] - f
[xlfd
] - 1;
388 len
= f
[XLFD_REGISTRY_INDEX
] - f
[xlfd
] - 1;
392 if (*str
== '*' && len
== 1)
394 return intern_downcase (str
, len
);
397 /* Parse P pointing the pixel/point size field of the form
398 `[A B C D]' which specifies a transformation matrix:
404 by which all glyphs of the font are transformed. The spec says
405 that scalar value N for the pixel/point size is equivalent to:
406 A = N * resx/resy, B = C = 0, D = N.
408 Return the scalar value N if the form is valid. Otherwise return
419 for (i
= 0, p
++; i
< 4 && *p
&& *p
!= ']'; i
++)
422 matrix
[i
] = - strtod (p
+ 1, &end
);
424 matrix
[i
] = strtod (p
, &end
);
427 return (i
== 4 ? (int) matrix
[3] : -1);
430 /* Parse NAME (null terminated) as XLFD format, and store information
431 in FONT (font-spec or font-entity). If NAME is successfully
432 parsed, return 2 (non-scalable font), 1 (scalable vector font), or
433 0 (auto-scaled font). Otherwise return -1.
435 If FONT is a font-entity, store RESY-SPACING-AVWIDTH information as
436 a symbol in FONT_EXTRA_INDEX.
438 If MERGE is nonzero, set a property of FONT only when it's nil. */
441 font_parse_xlfd (name
, font
, merge
)
446 int len
= strlen (name
);
448 int pixel_size
, resy
, avwidth
;
450 char *f
[XLFD_LAST_INDEX
+ 1];
452 int first_wildcard_field
= -1, last_wildcard_field
= XLFD_LAST_INDEX
;
455 /* Maximum XLFD name length is 255. */
457 for (i
= 0; *name
; name
++)
459 && i
< XLFD_LAST_INDEX
)
462 if (name
[1] == '*' && (! name
[2] || name
[2] == '-'))
464 if (first_wildcard_field
< 0)
465 first_wildcard_field
= i
;
466 last_wildcard_field
= i
;
471 f
[XLFD_LAST_INDEX
] = name
;
472 if (i
< XLFD_LAST_INDEX
)
474 /* Not a fully specified XLFD. */
475 if (first_wildcard_field
< 0 )
479 if (last_wildcard_field
< i
)
481 /* Shift fields after the last wildcard field. */
482 for (j
= XLFD_LAST_INDEX
- 1; j
> last_wildcard_field
; j
--, i
--)
484 /* Make all fields between the first and last wildcard fieled
485 also wildcard fields. */
486 for (j
--; j
> first_wildcard_field
; j
--)
490 f
[XLFD_ENCODING_INDEX
] = f
[XLFD_LAST_INDEX
];
492 if (! merge
|| NILP (AREF (font
, FONT_FOUNDRY_INDEX
)))
493 ASET (font
, FONT_FOUNDRY_INDEX
, intern_font_field (f
, XLFD_FOUNDRY_INDEX
));
494 if (! merge
|| NILP (AREF (font
, FONT_FAMILY_INDEX
)))
495 ASET (font
, FONT_FAMILY_INDEX
, intern_font_field (f
, XLFD_FAMILY_INDEX
));
496 if (! merge
|| NILP (AREF (font
, FONT_ADSTYLE_INDEX
)))
497 ASET (font
, FONT_ADSTYLE_INDEX
, intern_font_field (f
, XLFD_ADSTYLE_INDEX
));
498 if (! merge
|| NILP (AREF (font
, FONT_REGISTRY_INDEX
)))
499 ASET (font
, FONT_REGISTRY_INDEX
, intern_font_field (f
, XLFD_REGISTRY_INDEX
));
501 for (i
= FONT_WEIGHT_INDEX
, j
= XLFD_WEIGHT_INDEX
;
502 j
<= XLFD_SWIDTH_INDEX
; i
++, j
++)
503 if (! merge
|| NILP (AREF (font
, i
)))
505 if (isdigit(f
[j
][1]))
506 val
= make_number (atoi (f
[j
] + 1));
509 Lisp_Object sym
= intern_font_field (f
, j
);
511 val
= prop_name_to_numeric (i
, sym
);
518 if (f
[XLFD_PIXEL_SIZE_INDEX
][1] == '*')
519 pixel_size
= -1; /* indicates "unspecified" */
520 else if (f
[XLFD_PIXEL_SIZE_INDEX
][1] == '[')
521 pixel_size
= parse_matrix (f
[XLFD_PIXEL_SIZE_INDEX
] + 1);
522 else if (isdigit (f
[XLFD_PIXEL_SIZE_INDEX
][1]))
523 pixel_size
= strtod (f
[XLFD_PIXEL_SIZE_INDEX
] + 1, NULL
);
527 if (pixel_size
< 0 && FONT_ENTITY_P (font
))
530 if (f
[XLFD_POINT_SIZE_INDEX
][1] == '*')
531 point_size
= -1; /* indicates "unspecified" */
532 else if (f
[XLFD_POINT_SIZE_INDEX
][1] == '[')
533 point_size
= parse_matrix (f
[XLFD_POINT_SIZE_INDEX
] + 1);
534 else if (isdigit (f
[XLFD_POINT_SIZE_INDEX
][1]))
535 point_size
= strtod (f
[XLFD_POINT_SIZE_INDEX
] + 1, NULL
);
539 if (f
[XLFD_RESY_INDEX
][1] == '*')
540 resy
= -1; /* indicates "unspecified" */
542 resy
= strtod (f
[XLFD_RESY_INDEX
] + 1, NULL
);
544 if (f
[XLFD_AVGWIDTH_INDEX
][1] == '*')
545 avwidth
= -1; /* indicates "unspecified" */
546 else if (f
[XLFD_AVGWIDTH_INDEX
][1] == '~')
547 avwidth
= - strtod (f
[XLFD_AVGWIDTH_INDEX
] + 2, NULL
);
549 avwidth
= strtod (f
[XLFD_AVGWIDTH_INDEX
] + 1, NULL
);
551 if (! merge
|| NILP (AREF (font
, FONT_SIZE_INDEX
)))
554 ASET (font
, FONT_SIZE_INDEX
, make_number (pixel_size
));
561 pixel_size
= POINT_TO_PIXEL (point_size
, resy
);
562 ASET (font
, FONT_SIZE_INDEX
, make_number (pixel_size
));
566 ASET (font
, FONT_SIZE_INDEX
, make_float (point_size
/ 10));
570 ASET (font
, FONT_SIZE_INDEX
, Qnil
);
574 if (FONT_ENTITY_P (font
)
575 && EQ (AREF (font
, FONT_TYPE_INDEX
), Qx
))
576 ASET (font
, FONT_EXTRA_INDEX
, intern_font_field (f
, XLFD_RESY_INDEX
));
578 return (avwidth
> 0 ? 2 : resy
== 0);
581 /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES
582 length), and return the name length. If FONT_SIZE_INDEX of FONT is
583 0, use PIXEL_SIZE instead. */
586 font_unparse_xlfd (font
, pixel_size
, name
, nbytes
)
592 char *f
[XLFD_REGISTRY_INDEX
+ 1], *pixel_point
;
597 xassert (FONTP (font
));
599 for (i
= FONT_FOUNDRY_INDEX
, j
= XLFD_FOUNDRY_INDEX
; i
<= FONT_REGISTRY_INDEX
;
602 if (i
== FONT_ADSTYLE_INDEX
)
603 j
= XLFD_ADSTYLE_INDEX
;
604 else if (i
== FONT_REGISTRY_INDEX
)
605 j
= XLFD_REGISTRY_INDEX
;
606 val
= AREF (font
, i
);
609 if (j
== XLFD_REGISTRY_INDEX
)
610 f
[j
] = "*-*", len
+= 4;
612 f
[j
] = "*", len
+= 2;
617 val
= SYMBOL_NAME (val
);
618 if (j
== XLFD_REGISTRY_INDEX
619 && ! strchr ((char *) SDATA (val
), '-'))
621 /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */
622 if (SDATA (val
)[SBYTES (val
) - 1] == '*')
624 f
[j
] = alloca (SBYTES (val
) + 3);
625 sprintf (f
[j
], "%s-*", SDATA (val
));
626 len
+= SBYTES (val
) + 3;
630 f
[j
] = alloca (SBYTES (val
) + 4);
631 sprintf (f
[j
], "%s*-*", SDATA (val
));
632 len
+= SBYTES (val
) + 4;
636 f
[j
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
640 for (i
= FONT_WEIGHT_INDEX
, j
= XLFD_WEIGHT_INDEX
; i
<= FONT_WIDTH_INDEX
;
643 val
= AREF (font
, i
);
645 f
[j
] = "*", len
+= 2;
649 val
= prop_numeric_to_name (i
, XINT (val
));
651 val
= SYMBOL_NAME (val
);
652 xassert (STRINGP (val
));
653 f
[j
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
657 val
= AREF (font
, FONT_SIZE_INDEX
);
658 xassert (NUMBERP (val
) || NILP (val
));
663 len
+= sprintf (work
, "%d", i
) + 1;
665 len
+= sprintf (work
, "%d-*", pixel_size
) + 1;
668 else if (FLOATP (val
))
670 i
= XFLOAT_DATA (val
) * 10;
671 len
+= sprintf (work
, "*-%d", i
) + 1;
675 pixel_point
= "*-*", len
+= 4;
677 if (FONT_ENTITY_P (font
)
678 && EQ (AREF (font
, FONT_TYPE_INDEX
), Qx
))
680 /* Setup names for RESY-SPACING-AVWIDTH. */
681 val
= AREF (font
, FONT_EXTRA_INDEX
);
682 if (SYMBOLP (val
) && ! NILP (val
))
684 val
= SYMBOL_NAME (val
);
685 f
[XLFD_RESY_INDEX
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
688 f
[XLFD_RESY_INDEX
] = "*-*-*", len
+= 6;
691 f
[XLFD_RESY_INDEX
] = "*-*-*", len
+= 6;
693 len
+= 3; /* for "-*" of resx, and terminating '\0'. */
696 return sprintf (name
, "-%s-%s-%s-%s-%s-%s-%s-*-%s-%s",
697 f
[XLFD_FOUNDRY_INDEX
], f
[XLFD_FAMILY_INDEX
],
698 f
[XLFD_WEIGHT_INDEX
], f
[XLFD_SLANT_INDEX
],
699 f
[XLFD_SWIDTH_INDEX
],
700 f
[XLFD_ADSTYLE_INDEX
], pixel_point
,
701 f
[XLFD_RESY_INDEX
], f
[XLFD_REGISTRY_INDEX
]);
705 font_merge_old_spec (name
, family
, registry
, spec
)
706 Lisp_Object name
, family
, registry
, spec
;
710 if (font_parse_xlfd ((char *) SDATA (name
), spec
, 1) < 0)
712 Lisp_Object extra
= Fcons (Fcons (QCname
, name
), Qnil
);
714 ASET (spec
, FONT_EXTRA_INDEX
, extra
);
724 xassert (STRINGP (family
));
725 len
= SBYTES (family
);
726 p0
= (char *) SDATA (family
);
727 p1
= index (p0
, '-');
730 if (NILP (AREF (spec
, FONT_FOUNDRY_INDEX
)))
731 ASET (spec
, FONT_FOUNDRY_INDEX
,
732 intern_downcase (p0
, p1
- p0
));
733 if (NILP (AREF (spec
, FONT_FAMILY_INDEX
)))
734 ASET (spec
, FONT_FAMILY_INDEX
,
735 intern_downcase (p1
+ 1, len
- (p1
+ 1 - p0
)));
737 else if (NILP (AREF (spec
, FONT_FAMILY_INDEX
)))
738 ASET (spec
, FONT_FAMILY_INDEX
, intern_downcase (p0
, len
));
740 if (! NILP (registry
)
741 && NILP (AREF (spec
, FONT_REGISTRY_INDEX
)))
742 ASET (spec
, FONT_REGISTRY_INDEX
,
743 intern_downcase ((char *) SDATA (registry
), SBYTES (registry
)));
757 struct otf_list
*next
;
760 static struct otf_list
*otf_list
;
768 OTF_tag_name (tag
, name
);
769 return Fintern (make_unibyte_string (name
, 4), Qnil
);
773 otf_open (entity
, file
)
777 struct otf_list
*list
= otf_list
;
779 while (list
&& ! EQ (list
->entity
, entity
))
783 list
= malloc (sizeof (struct otf_list
));
784 list
->entity
= entity
;
785 list
->otf
= file
? OTF_open (file
) : NULL
;
786 list
->next
= otf_list
;
793 /* Return a list describing which scripts/languages FONT supports by
794 which GSUB/GPOS features of OpenType tables. See the comment of
795 (sturct font_driver).otf_capability. */
798 font_otf_capability (font
)
802 Lisp_Object capability
= Fcons (Qnil
, Qnil
);
805 otf
= otf_open (font
->entity
, font
->file_name
);
808 for (i
= 0; i
< 2; i
++)
810 OTF_GSUB_GPOS
*gsub_gpos
;
811 Lisp_Object script_list
= Qnil
;
814 if (OTF_get_features (otf
, i
== 0) < 0)
816 gsub_gpos
= i
== 0 ? otf
->gsub
: otf
->gpos
;
817 for (j
= gsub_gpos
->ScriptList
.ScriptCount
- 1; j
>= 0; j
--)
819 OTF_Script
*script
= gsub_gpos
->ScriptList
.Script
+ j
;
820 Lisp_Object langsys_list
= Qnil
;
821 Lisp_Object script_tag
= otf_tag_symbol (script
->ScriptTag
);
824 for (k
= script
->LangSysCount
; k
>= 0; k
--)
826 OTF_LangSys
*langsys
;
827 Lisp_Object feature_list
= Qnil
;
828 Lisp_Object langsys_tag
;
831 if (j
== script
->LangSysCount
)
833 langsys
= &script
->DefaultLangSys
;
838 langsys
= script
->LangSys
+ k
;
840 = otf_tag_symbol (script
->LangSysRecord
[k
].LangSysTag
);
842 for (l
= langsys
->FeatureCount
-1; l
>= 0; l
--)
845 = gsub_gpos
->FeatureList
.Feature
+ langsys
->FeatureIndex
[l
];
846 Lisp_Object feature_tag
847 = otf_tag_symbol (feature
->FeatureTag
);
849 feature_list
= Fcons (feature_tag
, feature_list
);
851 langsys_list
= Fcons (Fcons (langsys_tag
, feature_list
),
854 script_list
= Fcons (Fcons (script_tag
, langsys_list
),
859 XSETCAR (capability
, script_list
);
861 XSETCDR (capability
, script_list
);
868 parse_gsub_gpos_spec (spec
, script
, langsys
, features
)
870 char **script
, **langsys
, **features
;
878 *script
= (char *) SDATA (SYMBOL_NAME (val
));
881 *langsys
= NILP (val
) ? NULL
: (char *) SDATA (SYMBOL_NAME (val
));
883 len
= XINT (Flength (spec
));
884 *features
= p
= malloc (6 * len
);
888 for (asterisk
= 0; CONSP (spec
); spec
= XCDR (spec
))
891 if (SREF (SYMBOL_NAME (val
), 0) == '*')
894 p
+= sprintf (p
, ",*");
897 p
+= sprintf (p
, ",%s", SDATA (SYMBOL_NAME (val
)));
899 p
+= sprintf (p
, ",~%s", SDATA (SYMBOL_NAME (val
)));
904 #define DEVICE_DELTA(table, size) \
905 (((size) >= (table).StartSize && (size) <= (table).EndSize) \
906 ? (table).DeltaValue[(size) >= (table).StartSize] \
910 adjust_anchor (struct font
*font
, OTF_Anchor
*anchor
,
911 unsigned code
, int size
, int *x
, int *y
)
913 if (anchor
->AnchorFormat
== 2)
917 if (font
->driver
->anchor_point (font
, code
, anchor
->f
.f1
.AnchorPoint
,
921 else if (anchor
->AnchorFormat
== 3)
923 if (anchor
->f
.f2
.XDeviceTable
.offset
)
924 *x
+= DEVICE_DELTA (anchor
->f
.f2
.XDeviceTable
, size
);
925 if (anchor
->f
.f2
.YDeviceTable
.offset
)
926 *y
+= DEVICE_DELTA (anchor
->f
.f2
.YDeviceTable
, size
);
931 /* Drive FONT's OTF GSUB features according to GSUB_SPEC. See the
932 comment of (sturct font_driver).otf_gsub. */
935 font_otf_gsub (font
, gsub_spec
, gstring_in
, from
, to
, gstring_out
, idx
)
937 Lisp_Object gsub_spec
;
938 Lisp_Object gstring_in
;
940 Lisp_Object gstring_out
;
946 OTF_GlyphString otf_gstring
;
948 char *script
, *langsys
, *features
;
950 otf
= otf_open (font
->entity
, font
->file_name
);
953 if (OTF_get_table (otf
, "head") < 0)
955 if (OTF_check_table (otf
, "GSUB") < 0)
957 if (parse_gsub_gpos_spec (gsub_spec
, &script
, &langsys
, &features
) < 0)
960 otf_gstring
.size
= otf_gstring
.used
= len
;
961 otf_gstring
.glyphs
= (OTF_Glyph
*) malloc (sizeof (OTF_Glyph
) * len
);
962 memset (otf_gstring
.glyphs
, 0, sizeof (OTF_Glyph
) * len
);
963 for (i
= 0; i
< len
; i
++)
965 Lisp_Object g
= LGSTRING_GLYPH (gstring_in
, from
+ i
);
967 otf_gstring
.glyphs
[i
].c
= XINT (LGLYPH_CHAR (g
));
968 otf_gstring
.glyphs
[i
].glyph_id
= XINT (LGLYPH_CODE (g
));
971 OTF_drive_gdef (otf
, &otf_gstring
);
972 if (OTF_drive_gsub (otf
, &otf_gstring
, script
, langsys
, features
) < 0)
974 free (otf_gstring
.glyphs
);
977 if (ASIZE (gstring_out
) < idx
+ otf_gstring
.used
)
979 free (otf_gstring
.glyphs
);
983 for (i
= 0, g
= otf_gstring
.glyphs
; i
< otf_gstring
.used
;)
985 int i0
= g
->f
.index
.from
, i1
= g
->f
.index
.to
;
986 Lisp_Object glyph
= LGSTRING_GLYPH (gstring_in
, from
+ i0
);
987 Lisp_Object min_idx
= AREF (glyph
, 0);
988 Lisp_Object max_idx
= AREF (glyph
, 1);
992 int min_idx_i
= XINT (min_idx
), max_idx_i
= XINT (max_idx
);
994 for (i0
++; i0
<= i1
; i0
++)
996 glyph
= LGSTRING_GLYPH (gstring_in
, from
+ i0
);
997 if (min_idx_i
> XINT (AREF (glyph
, 0)))
998 min_idx_i
= XINT (AREF (glyph
, 0));
999 if (max_idx_i
< XINT (AREF (glyph
, 1)))
1000 max_idx_i
= XINT (AREF (glyph
, 1));
1002 min_idx
= make_number (min_idx_i
);
1003 max_idx
= make_number (max_idx_i
);
1004 i0
= g
->f
.index
.from
;
1006 for (; i
< otf_gstring
.used
&& g
->f
.index
.from
== i0
; i
++, g
++)
1008 glyph
= LGSTRING_GLYPH (gstring_out
, idx
+ i
);
1009 ASET (glyph
, 0, min_idx
);
1010 ASET (glyph
, 1, max_idx
);
1011 LGLYPH_SET_CHAR (glyph
, make_number (g
->c
));
1012 LGLYPH_SET_CODE (glyph
, make_number (g
->glyph_id
));
1016 free (otf_gstring
.glyphs
);
1020 /* Drive FONT's OTF GPOS features according to GPOS_SPEC. See the
1021 comment of (sturct font_driver).otf_gpos. */
1024 font_otf_gpos (font
, gpos_spec
, gstring
, from
, to
)
1026 Lisp_Object gpos_spec
;
1027 Lisp_Object gstring
;
1033 OTF_GlyphString otf_gstring
;
1035 char *script
, *langsys
, *features
;
1038 Lisp_Object base
, mark
;
1040 otf
= otf_open (font
->entity
, font
->file_name
);
1043 if (OTF_get_table (otf
, "head") < 0)
1045 if (OTF_check_table (otf
, "GPOS") < 0)
1047 if (parse_gsub_gpos_spec (gpos_spec
, &script
, &langsys
, &features
) < 0)
1050 otf_gstring
.size
= otf_gstring
.used
= len
;
1051 otf_gstring
.glyphs
= (OTF_Glyph
*) malloc (sizeof (OTF_Glyph
) * len
);
1052 memset (otf_gstring
.glyphs
, 0, sizeof (OTF_Glyph
) * len
);
1053 for (i
= 0; i
< len
; i
++)
1055 glyph
= LGSTRING_GLYPH (gstring
, from
+ i
);
1056 otf_gstring
.glyphs
[i
].glyph_id
= XINT (LGLYPH_CODE (glyph
));
1059 OTF_drive_gdef (otf
, &otf_gstring
);
1061 if (OTF_drive_gpos (otf
, &otf_gstring
, script
, langsys
, features
) < 0)
1063 free (otf_gstring
.glyphs
);
1067 u
= otf
->head
->unitsPerEm
;
1068 size
= font
->pixel_size
;
1070 for (i
= 0, g
= otf_gstring
.glyphs
; i
< otf_gstring
.used
; i
++, g
++)
1073 int xoff
= 0, yoff
= 0, width_adjust
= 0;
1078 glyph
= LGSTRING_GLYPH (gstring
, from
+ i
);
1079 switch (g
->positioning_type
)
1085 int format
= g
->f
.f1
.format
;
1087 if (format
& OTF_XPlacement
)
1088 xoff
= g
->f
.f1
.value
->XPlacement
* size
/ u
;
1089 if (format
& OTF_XPlaDevice
)
1090 xoff
+= DEVICE_DELTA (g
->f
.f1
.value
->XPlaDevice
, size
);
1091 if (format
& OTF_YPlacement
)
1092 yoff
= - (g
->f
.f1
.value
->YPlacement
* size
/ u
);
1093 if (format
& OTF_YPlaDevice
)
1094 yoff
-= DEVICE_DELTA (g
->f
.f1
.value
->YPlaDevice
, size
);
1095 if (format
& OTF_XAdvance
)
1096 width_adjust
+= g
->f
.f1
.value
->XAdvance
* size
/ u
;
1097 if (format
& OTF_XAdvDevice
)
1098 width_adjust
+= DEVICE_DELTA (g
->f
.f1
.value
->XAdvDevice
, size
);
1102 /* Not yet supported. */
1108 goto label_adjust_anchor
;
1109 default: /* i.e. case 6 */
1114 label_adjust_anchor
:
1116 int base_x
, base_y
, mark_x
, mark_y
, width
;
1119 base_x
= g
->f
.f4
.base_anchor
->XCoordinate
* size
/ u
;
1120 base_y
= g
->f
.f4
.base_anchor
->YCoordinate
* size
/ u
;
1121 mark_x
= g
->f
.f4
.mark_anchor
->XCoordinate
* size
/ u
;
1122 mark_y
= g
->f
.f4
.mark_anchor
->YCoordinate
* size
/ u
;
1124 code
= XINT (LGLYPH_CODE (prev
));
1125 if (g
->f
.f4
.base_anchor
->AnchorFormat
!= 1)
1126 adjust_anchor (font
, g
->f
.f4
.base_anchor
,
1127 code
, size
, &base_x
, &base_y
);
1128 if (g
->f
.f4
.mark_anchor
->AnchorFormat
!= 1)
1129 adjust_anchor (font
, g
->f
.f4
.mark_anchor
,
1130 code
, size
, &mark_x
, &mark_y
);
1132 if (NILP (LGLYPH_WIDTH (prev
)))
1134 width
= font
->driver
->text_extents (font
, &code
, 1, NULL
);
1135 LGLYPH_SET_WIDTH (prev
, make_number (width
));
1137 xoff
= XINT (LGLYPH_XOFF (prev
)) + (base_x
- width
) - mark_x
;
1138 yoff
= XINT (LGLYPH_YOFF (prev
)) + mark_y
- base_y
;
1141 if (g
->GlyphClass
== OTF_GlyphClass0
)
1142 base
= mark
= glyph
;
1143 else if (g
->GlyphClass
== OTF_GlyphClassMark
)
1148 LGLYPH_SET_XOFF (glyph
, make_number (xoff
));
1149 LGLYPH_SET_YOFF (glyph
, make_number (yoff
));
1150 LGLYPH_SET_WADJUST (glyph
, make_number (width_adjust
));
1153 free (otf_gstring
.glyphs
);
1157 #endif /* HAVE_LIBOTF */
1160 /* glyph-string handler */
1162 /* GSTRING is a vector of this form:
1163 [ [FONT-OBJECT LBEARING RBEARING WITH ASCENT DESCENT] GLYPH ... ]
1164 and GLYPH is a vector of this form:
1165 [ FROM-IDX TO-IDX C CODE X-OFF Y-OFF WIDTH WADJUST ]
1167 FROM-IDX and TO-IDX are used internally and should not be touched.
1168 C is a character of the glyph.
1169 CODE is a glyph-code of C in FONT-OBJECT.
1170 X-OFF and Y-OFF are offests to the base position for the glyph.
1171 WIDTH is a normal width of the glyph.
1172 WADJUST is an adjustment to the normal width of the glyph. */
1175 font_prepare_composition (cmp
)
1176 struct composition
*cmp
;
1179 = AREF (XHASH_TABLE (composition_hash_table
)->key_and_value
,
1180 cmp
->hash_index
* 2);
1181 struct font
*font
= XSAVE_VALUE (LGSTRING_FONT (gstring
))->pointer
;
1182 int len
= LGSTRING_LENGTH (gstring
);
1186 cmp
->lbearing
= cmp
->rbearing
= cmp
->pixel_width
= 0;
1187 cmp
->ascent
= font
->ascent
;
1188 cmp
->descent
= font
->descent
;
1190 for (i
= 0; i
< len
; i
++)
1192 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
1193 unsigned code
= XINT (LGLYPH_CODE (g
));
1194 struct font_metrics metrics
;
1196 font
->driver
->text_extents (font
, &code
, 1, &metrics
);
1197 LGLYPH_SET_WIDTH (g
, make_number (metrics
.width
));
1198 metrics
.lbearing
+= XINT (LGLYPH_XOFF (g
));
1199 metrics
.rbearing
+= XINT (LGLYPH_XOFF (g
));
1200 metrics
.ascent
+= XINT (LGLYPH_YOFF (g
));
1201 metrics
.descent
+= XINT (LGLYPH_YOFF (g
));
1203 if (cmp
->lbearing
> cmp
->pixel_width
+ metrics
.lbearing
)
1204 cmp
->lbearing
= cmp
->pixel_width
+ metrics
.lbearing
;
1205 if (cmp
->rbearing
< cmp
->pixel_width
+ metrics
.rbearing
)
1206 cmp
->rbearing
= cmp
->pixel_width
+ metrics
.rbearing
;
1207 if (cmp
->ascent
< metrics
.ascent
)
1208 cmp
->ascent
= metrics
.ascent
;
1209 if (cmp
->descent
< metrics
.descent
)
1210 cmp
->descent
= metrics
.descent
;
1211 cmp
->pixel_width
+= metrics
.width
+ XINT (LGLYPH_WADJUST (g
));
1213 LGSTRING_SET_LBEARING (gstring
, make_number (cmp
->lbearing
));
1214 LGSTRING_SET_RBEARING (gstring
, make_number (cmp
->rbearing
));
1215 LGSTRING_SET_WIDTH (gstring
, make_number (cmp
->pixel_width
));
1216 LGSTRING_SET_ASCENT (gstring
, make_number (cmp
->ascent
));
1217 LGSTRING_SET_DESCENT (gstring
, make_number (cmp
->descent
));
1223 font_gstring_produce (old
, from
, to
, new, idx
, code
, n
)
1231 Lisp_Object min_idx
, max_idx
;
1234 if (idx
+ n
> ASIZE (new))
1240 min_idx
= make_number (0);
1241 max_idx
= make_number (1);
1245 min_idx
= AREF (AREF (old
, from
- 1), 0);
1246 max_idx
= AREF (AREF (old
, from
- 1), 1);
1249 else if (from
+ 1 == to
)
1251 min_idx
= AREF (AREF (old
, from
), 0);
1252 max_idx
= AREF (AREF (old
, from
), 1);
1256 int min_idx_i
= XINT (AREF (AREF (old
, from
), 0));
1257 int max_idx_i
= XINT (AREF (AREF (old
, from
), 1));
1259 for (i
= from
+ 1; i
< to
; i
++)
1261 if (min_idx_i
> XINT (AREF (AREF (old
, i
), 0)))
1262 min_idx_i
= XINT (AREF (AREF (old
, i
), 0));
1263 if (max_idx_i
< XINT (AREF (AREF (old
, i
), 1)))
1264 max_idx_i
= XINT (AREF (AREF (old
, i
), 1));
1266 min_idx
= make_number (min_idx_i
);
1267 max_idx
= make_number (max_idx_i
);
1270 for (i
= 0; i
< n
; i
++)
1272 ASET (AREF (new, idx
+ i
), 0, min_idx
);
1273 ASET (AREF (new, idx
+ i
), 1, max_idx
);
1274 ASET (AREF (new, idx
+ i
), 2, make_number (code
[i
]));
1282 static unsigned font_score
P_ ((Lisp_Object
, Lisp_Object
));
1283 static int font_compare
P_ ((const void *, const void *));
1284 static Lisp_Object font_sort_entites
P_ ((Lisp_Object
, Lisp_Object
,
1285 Lisp_Object
, Lisp_Object
));
1287 /* We sort fonts by scoring each of them against a specified
1288 font-spec. The score value is 32 bit (`unsigned'), and the smaller
1289 the value is, the closer the font is to the font-spec.
1291 Each 1-bit in the highest 4 bits of the score is used for atomic
1292 properties FOUNDRY, FAMILY, ADSTYLE, and REGISTRY.
1294 Each 7-bit in the lowest 28 bits are used for numeric properties
1295 WEIGHT, SLANT, WIDTH, and SIZE. */
1297 /* How many bits to shift to store the difference value of each font
1298 property in a score. */
1299 static int sort_shift_bits
[FONT_SIZE_INDEX
+ 1];
1301 /* Score font-entity ENTITY against font-spec SPEC. The return value
1302 indicates how different ENTITY is compared with SPEC. */
1305 font_score (entity
, spec
)
1306 Lisp_Object entity
, spec
;
1310 /* Score atomic fields. Maximum difference is 1. */
1311 for (i
= FONT_FOUNDRY_INDEX
; i
<= FONT_REGISTRY_INDEX
; i
++)
1313 Lisp_Object val
= AREF (spec
, i
);
1316 && ! EQ (val
, AREF (entity
, i
)))
1317 score
|= 1 << sort_shift_bits
[i
];
1320 /* Score numeric fields. Maximum difference is 127. */
1321 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1323 Lisp_Object spec_val
= AREF (spec
, i
);
1324 Lisp_Object entity_val
= AREF (entity
, i
);
1326 if (! NILP (spec_val
) && ! EQ (spec_val
, entity_val
))
1328 if (! INTEGERP (entity_val
))
1329 score
|= 127 << sort_shift_bits
[i
];
1330 else if (i
< FONT_SIZE_INDEX
1331 || XINT (entity_val
) != 0)
1333 int diff
= XINT (entity_val
) - XINT (spec_val
);
1337 score
|= min (diff
, 127) << sort_shift_bits
[i
];
1346 /* The comparison function for qsort. */
1349 font_compare (d1
, d2
)
1350 const void *d1
, *d2
;
1352 return (*(unsigned *) d1
< *(unsigned *) d2
1353 ? -1 : *(unsigned *) d1
> *(unsigned *) d2
);
1357 /* The structure for elements being sorted by qsort. */
1358 struct font_sort_data
1365 /* Sort font-entities in vector VEC by closeness to font-spec PREFER.
1366 If PREFER specifies a point-size, calculate the corresponding
1367 pixel-size from the Y-resolution of FRAME before sorting. If SPEC
1368 is not nil, it is a font-spec to get the font-entities in VEC. */
1371 font_sort_entites (vec
, prefer
, frame
, spec
)
1372 Lisp_Object vec
, prefer
, frame
, spec
;
1376 struct font_sort_data
*data
;
1377 int prefer_is_copy
= 0;
1384 size
= AREF (spec
, FONT_SIZE_INDEX
);
1387 double point_size
= XFLOAT_DATA (size
) * 10;
1388 int pixel_size
= POINT_TO_PIXEL (point_size
, XFRAME (frame
)->resy
);
1390 prefer
= Fcopy_sequence (prefer
);
1391 ASET (prefer
, FONT_SIZE_INDEX
, make_number (pixel_size
));
1397 /* As it is assured that all fonts in VEC match with SPEC, we
1398 should ignore properties specified in SPEC. So, set the
1399 corresponding properties in PREFER nil. */
1400 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1401 if (! NILP (AREF (spec
, i
)) && ! NILP (AREF (prefer
, i
)))
1403 if (i
<= FONT_SIZE_INDEX
)
1405 if (! prefer_is_copy
)
1406 prefer
= Fcopy_sequence (prefer
);
1407 for (; i
<= FONT_SIZE_INDEX
; i
++)
1408 if (! NILP (AREF (spec
, i
)) && ! NILP (AREF (prefer
, i
)))
1409 ASET (prefer
, i
, Qnil
);
1413 /* Scoring and sorting. */
1414 SAFE_ALLOCA (data
, struct font_sort_data
*, (sizeof *data
) * len
);
1415 for (i
= 0; i
< len
; i
++)
1417 data
[i
].entity
= AREF (vec
, i
);
1418 data
[i
].score
= font_score (data
[i
].entity
, prefer
);
1420 qsort (data
, len
, sizeof *data
, font_compare
);
1421 for (i
= 0; i
< len
; i
++)
1422 ASET (vec
, i
, data
[i
].entity
);
1429 /* API of Font Service Layer. */
1432 font_update_sort_order (order
)
1435 int i
, shift_bits
= 21;
1437 for (i
= 0; i
< 4; i
++, shift_bits
-= 7)
1439 int xlfd_idx
= order
[i
];
1441 if (xlfd_idx
== XLFD_WEIGHT_INDEX
)
1442 sort_shift_bits
[FONT_WEIGHT_INDEX
] = shift_bits
;
1443 else if (xlfd_idx
== XLFD_SLANT_INDEX
)
1444 sort_shift_bits
[FONT_SLANT_INDEX
] = shift_bits
;
1445 else if (xlfd_idx
== XLFD_SWIDTH_INDEX
)
1446 sort_shift_bits
[FONT_WIDTH_INDEX
] = shift_bits
;
1448 sort_shift_bits
[FONT_SIZE_INDEX
] = shift_bits
;
1453 font_symbolic_weight (font
)
1456 Lisp_Object weight
= AREF (font
, FONT_WEIGHT_INDEX
);
1458 if (INTEGERP (weight
))
1459 weight
= prop_numeric_to_name (FONT_WEIGHT_INDEX
, XINT (weight
));
1464 font_symbolic_slant (font
)
1467 Lisp_Object slant
= AREF (font
, FONT_SLANT_INDEX
);
1469 if (INTEGERP (slant
))
1470 slant
= prop_numeric_to_name (FONT_SLANT_INDEX
, XINT (slant
));
1475 font_symbolic_width (font
)
1478 Lisp_Object width
= AREF (font
, FONT_WIDTH_INDEX
);
1480 if (INTEGERP (width
))
1481 width
= prop_numeric_to_name (FONT_WIDTH_INDEX
, XINT (width
));
1486 font_find_object (font
)
1489 Lisp_Object tail
, elt
;
1491 for (tail
= AREF (font
->entity
, FONT_OBJLIST_INDEX
); CONSP (tail
);
1495 if (font
== XSAVE_VALUE (elt
)->pointer
1496 && XSAVE_VALUE (elt
)->integer
> 0)
1503 static Lisp_Object scratch_font_spec
, scratch_font_prefer
;
1505 /* Return a vector of font-entities matching with SPEC on frame F. */
1508 font_list_entities (frame
, spec
)
1509 Lisp_Object frame
, spec
;
1511 FRAME_PTR f
= XFRAME (frame
);
1512 struct font_driver_list
*driver_list
= f
->font_driver_list
;
1513 Lisp_Object ftype
, family
, alternate_familes
;
1514 Lisp_Object
*vec
= alloca (sizeof (Lisp_Object
) * num_font_drivers
);
1520 family
= AREF (spec
, FONT_FAMILY_INDEX
);
1522 alternate_familes
= Qnil
;
1525 if (NILP (font_family_alist
)
1526 && !NILP (Vface_alternative_font_family_alist
))
1527 build_font_family_alist ();
1528 alternate_familes
= assq_no_quit (family
, font_family_alist
);
1529 if (! NILP (alternate_familes
))
1530 alternate_familes
= XCDR (alternate_familes
);
1532 xassert (ASIZE (spec
) == FONT_SPEC_MAX
);
1533 ftype
= AREF (spec
, FONT_TYPE_INDEX
);
1535 for (i
= 0; driver_list
; driver_list
= driver_list
->next
)
1536 if (NILP (ftype
) || EQ (driver_list
->driver
->type
, ftype
))
1538 Lisp_Object cache
= driver_list
->driver
->get_cache (frame
);
1539 Lisp_Object tail
= alternate_familes
;
1542 xassert (CONSP (cache
));
1543 ASET (spec
, FONT_TYPE_INDEX
, driver_list
->driver
->type
);
1544 ASET (spec
, FONT_FAMILY_INDEX
, family
);
1548 val
= assoc_no_quit (spec
, XCDR (cache
));
1553 val
= driver_list
->driver
->list (frame
, spec
);
1555 XSETCDR (cache
, Fcons (Fcons (Fcopy_sequence (spec
), val
),
1558 if (VECTORP (val
) && ASIZE (val
) > 0)
1565 ASET (spec
, FONT_FAMILY_INDEX
, XCAR (tail
));
1569 ASET (spec
, FONT_TYPE_INDEX
, ftype
);
1570 ASET (spec
, FONT_FAMILY_INDEX
, family
);
1571 return (i
> 0 ? Fvconcat (i
, vec
) : null_vector
);
1574 static int num_fonts
;
1577 font_open_entity (f
, entity
, pixel_size
)
1582 struct font_driver_list
*driver_list
;
1583 Lisp_Object objlist
, size
, val
;
1586 size
= AREF (entity
, FONT_SIZE_INDEX
);
1587 xassert (NATNUMP (size
));
1588 if (XINT (size
) != 0)
1589 pixel_size
= XINT (size
);
1591 for (objlist
= AREF (entity
, FONT_OBJLIST_INDEX
); CONSP (objlist
);
1592 objlist
= XCDR (objlist
))
1594 font
= XSAVE_VALUE (XCAR (objlist
))->pointer
;
1595 if (font
->pixel_size
== pixel_size
)
1597 XSAVE_VALUE (XCAR (objlist
))->integer
++;
1598 return XCAR (objlist
);
1602 xassert (FONT_ENTITY_P (entity
));
1603 val
= AREF (entity
, FONT_TYPE_INDEX
);
1604 for (driver_list
= f
->font_driver_list
;
1605 driver_list
&& ! EQ (driver_list
->driver
->type
, val
);
1606 driver_list
= driver_list
->next
);
1610 font
= driver_list
->driver
->open (f
, entity
, pixel_size
);
1613 val
= make_save_value (font
, 1);
1614 ASET (entity
, FONT_OBJLIST_INDEX
,
1615 Fcons (val
, AREF (entity
, FONT_OBJLIST_INDEX
)));
1621 font_close_object (f
, font_object
)
1623 Lisp_Object font_object
;
1626 Lisp_Object objlist
= AREF (font
->entity
, FONT_OBJLIST_INDEX
);
1627 Lisp_Object tail
, prev
= Qnil
;
1629 for (prev
= Qnil
, tail
= objlist
; CONSP (tail
);
1630 prev
= tail
, tail
= XCDR (tail
))
1631 if (EQ (font_object
, XCAR (tail
)))
1633 struct Lisp_Save_Value
*p
= XSAVE_VALUE (font_object
);
1635 xassert (p
->integer
> 0);
1637 if (p
->integer
== 0)
1639 if (font
->driver
->close
)
1640 font
->driver
->close (f
, p
->pointer
);
1643 ASET (font
->entity
, FONT_OBJLIST_INDEX
, XCDR (objlist
));
1645 XSETCDR (prev
, XCDR (objlist
));
1652 font_has_char (f
, font_entity
, c
)
1654 Lisp_Object font_entity
;
1657 Lisp_Object type
= AREF (font_entity
, FONT_TYPE_INDEX
);
1658 struct font_driver_list
*driver_list
;
1660 for (driver_list
= f
->font_driver_list
;
1661 driver_list
&& ! EQ (driver_list
->driver
->type
, type
);
1662 driver_list
= driver_list
->next
);
1665 return driver_list
->driver
->has_char (font_entity
, c
);
1669 font_encode_char (font_object
, c
)
1670 Lisp_Object font_object
;
1673 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
1675 return font
->driver
->encode_char (font
, c
);
1679 font_get_name (font_object
)
1680 Lisp_Object font_object
;
1682 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
1684 return (font
->font
.full_name
? font
->font
.full_name
1685 : font
->file_name
? font
->file_name
1690 font_get_frame (font
)
1693 if (FONT_OBJECT_P (font
))
1694 font
= ((struct font
*) XSAVE_VALUE (font
)->pointer
)->entity
;
1695 xassert (FONT_ENTITY_P (font
));
1696 return AREF (font
, FONT_FRAME_INDEX
);
1699 extern Lisp_Object Qunspecified
, Qignore_defface
;
1702 font_find_for_lface (f
, lface
, spec
)
1707 Lisp_Object attrs
[LFACE_FONT_INDEX
+ 1];
1708 Lisp_Object frame
, val
, entities
;
1710 unsigned char try_unspecified
[FONT_SPEC_MAX
];
1712 for (i
= 0; i
<= LFACE_FONT_INDEX
; i
++)
1715 if (EQ (val
, Qunspecified
) || EQ (val
, Qignore_defface
))
1720 for (i
= 0; i
< FONT_SPEC_MAX
; i
++)
1721 ASET (scratch_font_spec
, i
, Qnil
);
1723 for (i
= 0; i
< FONT_SPEC_MAX
; i
++)
1724 ASET (scratch_font_spec
, i
, AREF (spec
, i
));
1726 /* If SPEC doesn't specify a specific property, it can be tried with
1727 nil even if FACE specifies it. */
1728 for (i
= FONT_FOUNDRY_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1729 try_unspecified
[i
] = NILP (AREF (scratch_font_spec
, i
));
1731 if (NILP (spec
) && STRINGP (attrs
[LFACE_FONT_INDEX
]))
1732 font_merge_old_spec (attrs
[LFACE_FONT_INDEX
], Qnil
, Qnil
,
1734 if (NILP (AREF (scratch_font_spec
, FONT_FAMILY_INDEX
))
1735 && ! NILP (attrs
[LFACE_FAMILY_INDEX
]))
1736 font_merge_old_spec (Qnil
, attrs
[LFACE_FAMILY_INDEX
], Qnil
,
1738 if (NILP (AREF (scratch_font_spec
, FONT_REGISTRY_INDEX
)))
1740 ASET (scratch_font_spec
, FONT_REGISTRY_INDEX
, intern ("iso8859-1"));
1741 try_unspecified
[FONT_REGISTRY_INDEX
] = 0;
1744 for (i
= FONT_FAMILY_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1745 if (try_unspecified
[i
]
1746 && NILP (AREF (scratch_font_spec
, i
)))
1747 try_unspecified
[i
] = 0;
1749 XSETFRAME (frame
, f
);
1750 entities
= font_list_entities (frame
, scratch_font_spec
);
1751 while (ASIZE (entities
) == 0)
1753 if (try_unspecified
[FONT_WEIGHT_INDEX
]
1754 || try_unspecified
[FONT_SLANT_INDEX
]
1755 || try_unspecified
[FONT_WIDTH_INDEX
]
1756 || try_unspecified
[FONT_SIZE_INDEX
])
1758 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1760 try_unspecified
[i
] = 0;
1761 ASET (scratch_font_spec
, i
, Qnil
);
1763 entities
= font_list_entities (frame
, scratch_font_spec
);
1765 else if (try_unspecified
[FONT_FOUNDRY_INDEX
])
1767 try_unspecified
[FONT_FOUNDRY_INDEX
] = 0;
1768 ASET (scratch_font_spec
, FONT_FOUNDRY_INDEX
, Qnil
);
1769 entities
= font_list_entities (frame
, scratch_font_spec
);
1771 else if (try_unspecified
[FONT_FAMILY_INDEX
])
1773 try_unspecified
[FONT_FAMILY_INDEX
] = 0;
1774 ASET (scratch_font_spec
, FONT_FAMILY_INDEX
, Qnil
);
1775 entities
= font_list_entities (frame
, scratch_font_spec
);
1781 if (ASIZE (entities
) > 1)
1783 Lisp_Object prefer
= scratch_font_prefer
;
1785 for (i
= 0; i
< FONT_WEIGHT_INDEX
; i
++)
1786 ASET (prefer
, i
, Qnil
);
1787 if (! NILP (attrs
[LFACE_WEIGHT_INDEX
]))
1788 ASET (prefer
, FONT_WEIGHT_INDEX
,
1789 font_prop_validate_style (FONT_WEIGHT_INDEX
,
1790 attrs
[LFACE_WEIGHT_INDEX
]));
1791 if (! NILP (attrs
[LFACE_SLANT_INDEX
]))
1792 ASET (prefer
, FONT_SLANT_INDEX
,
1793 font_prop_validate_style (FONT_SLANT_INDEX
,
1794 attrs
[LFACE_SLANT_INDEX
]));
1795 if (! NILP (attrs
[LFACE_SWIDTH_INDEX
]))
1796 ASET (prefer
, FONT_WIDTH_INDEX
,
1797 font_prop_validate_style (FONT_WIDTH_INDEX
,
1798 attrs
[LFACE_SWIDTH_INDEX
]));
1799 if (! NILP (attrs
[LFACE_HEIGHT_INDEX
]))
1803 val
= attrs
[LFACE_HEIGHT_INDEX
];
1804 size
= POINT_TO_PIXEL (XINT (val
), f
->resy
);
1805 ASET (prefer
, FONT_SIZE_INDEX
, make_number (size
));
1807 font_sort_entites (entities
, prefer
, frame
, spec
);
1810 return AREF (entities
, 0);
1814 font_open_for_lface (f
, lface
, entity
)
1819 int pt
= XINT (lface
[LFACE_HEIGHT_INDEX
]);
1820 int size
= POINT_TO_PIXEL (pt
, f
->resy
);
1822 return font_open_entity (f
, entity
, size
);
1826 font_load_for_face (f
, face
)
1832 face
->font_info_id
= -1;
1833 face
->font_info
= NULL
;
1835 face
->font_name
= NULL
;
1837 entity
= font_find_for_lface (f
, face
->lface
, Qnil
);
1838 if (! NILP (entity
))
1840 Lisp_Object font_object
= font_open_for_lface (f
, face
->lface
, entity
);
1842 if (! NILP (font_object
))
1844 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
1846 face
->font
= font
->font
.font
;
1847 face
->font_info
= (struct font_info
*) font
;
1848 face
->font_info_id
= 0;
1849 face
->font_name
= font
->font
.full_name
;
1853 add_to_log ("Unable to load font for a face%s", null_string
, Qnil
);
1857 font_prepare_for_face (f
, face
)
1861 struct font
*font
= (struct font
*) face
->font_info
;
1863 if (font
->driver
->prepare_face
)
1864 font
->driver
->prepare_face (f
, face
);
1868 font_done_for_face (f
, face
)
1872 struct font
*font
= (struct font
*) face
->font_info
;
1874 if (font
->driver
->done_face
)
1875 font
->driver
->done_face (f
, face
);
1880 font_open_by_name (f
, name
)
1884 Lisp_Object spec
= Ffont_spec (0, NULL
);
1886 struct font_driver_list
*dlist
;
1888 XSETFRAME (frame
, f
);
1889 ASET (spec
, FONT_EXTRA_INDEX
,
1890 Fcons (Fcons (QCname
, make_unibyte_string (name
, strlen (name
))),
1893 for (dlist
= f
->font_driver_list
; dlist
; dlist
= dlist
->next
)
1894 if (dlist
->driver
->parse_name
1895 && dlist
->driver
->parse_name (f
, name
, spec
) >= 0)
1897 Lisp_Object entities
= font_list_entities (frame
, spec
);
1898 Lisp_Object font_object
;
1901 if (ASIZE (entities
) == 0)
1903 pixel_size
= XINT (AREF (AREF (entities
, 0), FONT_SIZE_INDEX
));
1904 if (pixel_size
== 0 && INTEGERP (AREF (spec
, FONT_SIZE_INDEX
)))
1905 pixel_size
= XINT (AREF (spec
, FONT_SIZE_INDEX
));
1906 font_object
= font_open_entity (f
, AREF (entities
, 0), pixel_size
);
1907 if (! NILP (font_object
))
1914 /* Register font-driver DRIVER. This function is used in two ways.
1916 The first is with frame F non-NULL. In this case, DRIVER is
1917 registered to be used for drawing characters on F. All frame
1918 creaters (e.g. Fx_create_frame) must call this function at least
1919 once with an available font-driver.
1921 The second is with frame F NULL. In this case, DRIVER is globally
1922 registered in the variable `font_driver_list'. All font-driver
1923 implementations must call this function in its syms_of_XXXX
1924 (e.g. syms_of_xfont). */
1927 register_font_driver (driver
, f
)
1928 struct font_driver
*driver
;
1931 struct font_driver_list
*root
= f
? f
->font_driver_list
: font_driver_list
;
1932 struct font_driver_list
*prev
, *list
;
1934 if (f
&& ! driver
->draw
)
1935 error ("Unsable font driver for a frame: %s",
1936 SDATA (SYMBOL_NAME (driver
->type
)));
1938 for (prev
= NULL
, list
= root
; list
; prev
= list
, list
= list
->next
)
1939 if (list
->driver
->type
== driver
->type
)
1940 error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver
->type
)));
1942 list
= malloc (sizeof (struct font_driver_list
));
1943 list
->driver
= driver
;
1948 f
->font_driver_list
= list
;
1950 font_driver_list
= list
;
1954 /* Free font-driver list on frame F. It doesn't free font-drivers
1958 free_font_driver_list (f
)
1961 while (f
->font_driver_list
)
1963 struct font_driver_list
*next
= f
->font_driver_list
->next
;
1965 free (f
->font_driver_list
);
1966 f
->font_driver_list
= next
;
1973 DEFUN ("fontp", Ffontp
, Sfontp
, 1, 1, 0,
1974 doc
: /* Return t if object is a font-spec or font-entity. */)
1978 return (FONTP (object
) ? Qt
: Qnil
);
1981 DEFUN ("font-spec", Ffont_spec
, Sfont_spec
, 0, MANY
, 0,
1982 doc
: /* Return a newly created font-spec with specified arguments as properties.
1983 usage: (font-spec &rest properties) */)
1988 Lisp_Object spec
= Fmake_vector (make_number (FONT_SPEC_MAX
), Qnil
);
1989 Lisp_Object extra
= Qnil
;
1992 for (i
= 0; i
< nargs
; i
+= 2)
1994 enum font_property_index prop
;
1995 Lisp_Object key
= args
[i
], val
= args
[i
+ 1];
1997 prop
= check_font_prop_name (key
);
1998 if (prop
< FONT_EXTRA_INDEX
)
1999 ASET (spec
, prop
, (font_property_table
[prop
].validater
) (prop
, val
));
2001 extra
= Fcons (Fcons (key
, val
), extra
);
2003 ASET (spec
, FONT_EXTRA_INDEX
, extra
);
2008 DEFUN ("font-get", Ffont_get
, Sfont_get
, 2, 2, 0,
2009 doc
: /* Return the value of FONT's PROP property.
2010 FONT may be a font-spec or font-entity.
2011 If FONT is font-entity and PROP is :extra, always nil is returned. */)
2013 Lisp_Object font
, prop
;
2015 enum font_property_index idx
;
2018 idx
= check_font_prop_name (prop
);
2019 if (idx
< FONT_EXTRA_INDEX
)
2020 return AREF (font
, idx
);
2021 if (FONT_ENTITY_P (font
))
2023 return Fcdr (Fassoc (AREF (font
, FONT_EXTRA_INDEX
), prop
));
2027 DEFUN ("font-put", Ffont_put
, Sfont_put
, 3, 3, 0,
2028 doc
: /* Set one property of FONT-SPEC: give property PROP value VALUE. */)
2029 (font_spec
, prop
, val
)
2030 Lisp_Object font_spec
, prop
, val
;
2032 enum font_property_index idx
;
2033 Lisp_Object extra
, slot
;
2035 CHECK_FONT_SPEC (font_spec
);
2036 idx
= check_font_prop_name (prop
);
2037 if (idx
< FONT_EXTRA_INDEX
)
2038 return ASET (font_spec
, idx
, val
);
2039 extra
= AREF (font_spec
, FONT_EXTRA_INDEX
);
2040 slot
= Fassoc (extra
, prop
);
2042 extra
= Fcons (Fcons (prop
, val
), extra
);
2044 Fsetcdr (slot
, val
);
2048 DEFUN ("list-fonts", Flist_fonts
, Slist_fonts
, 1, 4, 0,
2049 doc
: /* List available fonts matching FONT-SPEC on the current frame.
2050 Optional 2nd argument FRAME specifies the target frame.
2051 Optional 3rd argument NUM, if non-nil, limits the number of returned fonts.
2052 Optional 4th argument PREFER, if non-nil, is a font-spec to sort fonts
2053 by closeness to PREFER. */)
2054 (font_spec
, frame
, num
, prefer
)
2055 Lisp_Object font_spec
, frame
, num
, prefer
;
2057 Lisp_Object vec
, list
, tail
;
2061 frame
= selected_frame
;
2062 CHECK_LIVE_FRAME (frame
);
2063 CHECK_VALIDATE_FONT_SPEC (font_spec
);
2071 if (! NILP (prefer
))
2072 CHECK_FONT (prefer
);
2074 vec
= font_list_entities (frame
, font_spec
);
2079 return Fcons (AREF (vec
, 0), Qnil
);
2081 if (! NILP (prefer
))
2082 vec
= font_sort_entites (vec
, prefer
, frame
, font_spec
);
2084 list
= tail
= Fcons (AREF (vec
, 0), Qnil
);
2085 if (n
== 0 || n
> len
)
2087 for (i
= 1; i
< n
; i
++)
2089 Lisp_Object val
= Fcons (AREF (vec
, i
), Qnil
);
2091 XSETCDR (tail
, val
);
2097 DEFUN ("list-families", Flist_families
, Slist_families
, 0, 1, 0,
2098 doc
: /* List available font families on the current frame.
2099 Optional 2nd argument FRAME specifies the target frame. */)
2104 struct font_driver_list
*driver_list
;
2108 frame
= selected_frame
;
2109 CHECK_LIVE_FRAME (frame
);
2112 for (driver_list
= f
->font_driver_list
; driver_list
;
2113 driver_list
= driver_list
->next
)
2114 if (driver_list
->driver
->list_family
)
2116 Lisp_Object val
= driver_list
->driver
->list_family (frame
);
2122 Lisp_Object tail
= list
;
2124 for (; CONSP (val
); val
= XCDR (val
))
2125 if (NILP (Fmemq (XCAR (val
), tail
)))
2126 list
= Fcons (XCAR (val
), list
);
2132 DEFUN ("find-font", Ffind_font
, Sfind_font
, 1, 2, 0,
2133 doc
: /* Return a font-entity matching with FONT-SPEC on the current frame.
2134 Optional 2nd argument FRAME, if non-nil, specifies the target frame. */)
2136 Lisp_Object font_spec
, frame
;
2138 Lisp_Object val
= Flist_fonts (font_spec
, frame
, make_number (1), Qnil
);
2145 DEFUN ("font-xlfd-name", Ffont_xlfd_name
, Sfont_xlfd_name
, 1, 1, 0,
2146 doc
: /* Return XLFD name of FONT.
2147 FONT is a font-spec, font-entity, or font-object.
2148 If the name is too long for XLFD (maximum 255 chars), return nil. */)
2155 if (FONT_SPEC_P (font
))
2156 CHECK_VALIDATE_FONT_SPEC (font
);
2157 else if (FONT_ENTITY_P (font
))
2163 CHECK_FONT_GET_OBJECT (font
, fontp
);
2164 font
= fontp
->entity
;
2165 pixel_size
= fontp
->pixel_size
;
2168 if (font_unparse_xlfd (font
, pixel_size
, name
, 256) < 0)
2170 return build_string (name
);
2173 DEFUN ("clear-font-cache", Fclear_font_cache
, Sclear_font_cache
, 0, 0, 0,
2174 doc
: /* Clear font cache. */)
2177 Lisp_Object list
, frame
;
2179 FOR_EACH_FRAME (list
, frame
)
2181 FRAME_PTR f
= XFRAME (frame
);
2182 struct font_driver_list
*driver_list
= f
->font_driver_list
;
2184 for (; driver_list
; driver_list
= driver_list
->next
)
2186 Lisp_Object cache
= driver_list
->driver
->get_cache (frame
);
2187 Lisp_Object tail
, elt
;
2189 for (tail
= XCDR (cache
); CONSP (tail
); tail
= XCDR (tail
))
2192 if (CONSP (elt
) && FONT_SPEC_P (XCAR (elt
)))
2194 Lisp_Object vec
= XCDR (elt
);
2197 for (i
= 0; i
< ASIZE (vec
); i
++)
2199 Lisp_Object entity
= AREF (vec
, i
);
2200 Lisp_Object objlist
= AREF (entity
, FONT_OBJLIST_INDEX
);
2202 for (; CONSP (objlist
); objlist
= XCDR (objlist
))
2204 Lisp_Object val
= XCAR (objlist
);
2205 struct Lisp_Save_Value
*p
= XSAVE_VALUE (val
);
2206 struct font
*font
= p
->pointer
;
2209 && driver_list
->driver
== font
->driver
);
2210 driver_list
->driver
->close (f
, font
);
2214 if (driver_list
->driver
->free_entity
)
2215 driver_list
->driver
->free_entity (entity
);
2219 XSETCDR (cache
, Qnil
);
2226 DEFUN ("internal-set-font-style-table", Finternal_set_font_style_table
,
2227 Sinternal_set_font_style_table
, 2, 2, 0,
2228 doc
: /* Set font style table for PROP to TABLE.
2229 PROP must be `:weight', `:slant', or `:width'.
2230 TABLE must be an alist of symbols vs the corresponding numeric values
2231 sorted by numeric values. */)
2233 Lisp_Object prop
, table
;
2237 Lisp_Object tail
, val
;
2239 CHECK_SYMBOL (prop
);
2240 table_index
= (EQ (prop
, QCweight
) ? 0
2241 : EQ (prop
, QCslant
) ? 1
2242 : EQ (prop
, QCwidth
) ? 2
2244 if (table_index
>= ASIZE (font_style_table
))
2245 error ("Invalid font style property: %s", SDATA (SYMBOL_NAME (prop
)));
2246 table
= Fcopy_sequence (table
);
2248 for (tail
= table
; ! NILP (tail
); tail
= Fcdr (tail
))
2250 prop
= Fcar (Fcar (tail
));
2251 val
= Fcdr (Fcar (tail
));
2252 CHECK_SYMBOL (prop
);
2254 if (numeric
> XINT (val
))
2255 error ("Numeric values not sorted for %s", SDATA (SYMBOL_NAME (prop
)));
2256 numeric
= XINT (val
);
2257 XSETCAR (tail
, Fcons (prop
, val
));
2259 ASET (font_style_table
, table_index
, table
);
2263 DEFUN ("font-make-gstring", Ffont_make_gstring
, Sfont_make_gstring
, 2, 2, 0,
2264 doc
: /* Return a newly created glyph-string for FONT-OBJECT with NUM glyphs.
2265 FONT-OBJECT may be nil if it is not yet known. */)
2267 Lisp_Object font_object
, num
;
2269 Lisp_Object gstring
, g
;
2273 if (! NILP (font_object
))
2274 CHECK_FONT_OBJECT (font_object
);
2277 len
= XINT (num
) + 1;
2278 gstring
= Fmake_vector (make_number (len
), Qnil
);
2279 g
= Fmake_vector (make_number (6), Qnil
);
2280 ASET (g
, 0, font_object
);
2281 ASET (gstring
, 0, g
);
2282 for (i
= 1; i
< len
; i
++)
2283 ASET (gstring
, i
, Fmake_vector (make_number (8), make_number (0)));
2287 DEFUN ("font-fill-gstring", Ffont_fill_gstring
, Sfont_fill_gstring
, 4, 5, 0,
2288 doc
: /* Fillin glyph-string GSTRING by characters for FONT-OBJECT.
2289 START and END specifies the region to extract characters.
2290 If optional 3rd argument OBJECT is non-nil, it is a buffer or a string from
2291 where to extract characters.
2292 FONT-OBJECT may be nil if GSTRING already already contains one. */)
2293 (gstring
, font_object
, start
, end
, object
)
2294 Lisp_Object gstring
, font_object
, start
, end
, object
;
2300 CHECK_VECTOR (gstring
);
2301 if (NILP (font_object
))
2302 font_object
= Faref (Faref (gstring
, make_number (0)), make_number (0));
2303 CHECK_FONT_GET_OBJECT (font_object
, font
);
2305 if (STRINGP (object
))
2307 const unsigned char *p
;
2309 CHECK_NATNUM (start
);
2311 if (XINT (start
) > XINT (end
)
2312 || XINT (end
) > ASIZE (object
)
2313 || XINT (end
) - XINT (start
) >= XINT (Flength (gstring
)))
2314 args_out_of_range (start
, end
);
2316 len
= XINT (end
) - XINT (start
);
2317 p
= SDATA (object
) + string_char_to_byte (object
, XINT (start
));
2318 for (i
= 0; i
< len
; i
++)
2320 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
2322 c
= STRING_CHAR_ADVANCE (p
);
2323 code
= font
->driver
->encode_char (font
, c
);
2324 if (code
> MOST_POSITIVE_FIXNUM
)
2325 error ("Glyph code 0x%X is too large", code
);
2326 ASET (g
, 0, make_number (i
));
2327 ASET (g
, 1, make_number (i
+ 1));
2328 LGLYPH_SET_CHAR (g
, make_number (c
));
2329 LGLYPH_SET_CODE (g
, make_number (code
));
2336 if (! NILP (object
))
2337 Fset_buffer (object
);
2338 validate_region (&start
, &end
);
2339 if (XINT (end
) - XINT (start
) > len
)
2340 args_out_of_range (start
, end
);
2341 len
= XINT (end
) - XINT (start
);
2343 pos_byte
= CHAR_TO_BYTE (pos
);
2344 for (i
= 0; i
< len
; i
++)
2346 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
2348 FETCH_CHAR_ADVANCE (c
, pos
, pos_byte
);
2349 code
= font
->driver
->encode_char (font
, c
);
2350 if (code
> MOST_POSITIVE_FIXNUM
)
2351 error ("Glyph code 0x%X is too large", code
);
2352 ASET (g
, 0, make_number (i
));
2353 ASET (g
, 1, make_number (i
+ 1));
2354 LGLYPH_SET_CHAR (g
, make_number (c
));
2355 LGLYPH_SET_CODE (g
, make_number (code
));
2364 DEFUN ("open-font", Fopen_font
, Sopen_font
, 1, 3, 0,
2365 doc
: /* Open FONT-ENTITY. */)
2366 (font_entity
, size
, frame
)
2367 Lisp_Object font_entity
;
2373 CHECK_FONT_ENTITY (font_entity
);
2375 size
= AREF (font_entity
, FONT_SIZE_INDEX
);
2376 CHECK_NUMBER (size
);
2378 frame
= selected_frame
;
2379 CHECK_LIVE_FRAME (frame
);
2381 isize
= XINT (size
);
2383 isize
= POINT_TO_PIXEL (- isize
, XFRAME (frame
)->resy
);
2385 return font_open_entity (XFRAME (frame
), font_entity
, isize
);
2388 DEFUN ("close-font", Fclose_font
, Sclose_font
, 1, 2, 0,
2389 doc
: /* Close FONT-OBJECT. */)
2390 (font_object
, frame
)
2391 Lisp_Object font_object
, frame
;
2393 CHECK_FONT_OBJECT (font_object
);
2395 frame
= selected_frame
;
2396 CHECK_LIVE_FRAME (frame
);
2397 font_close_object (XFRAME (frame
), font_object
);
2401 DEFUN ("query-font", Fquery_font
, Squery_font
, 1, 1, 0,
2402 doc
: /* Return information about FONT-OBJECT. */)
2404 Lisp_Object font_object
;
2409 CHECK_FONT_GET_OBJECT (font_object
, font
);
2411 val
= Fmake_vector (make_number (9), Qnil
);
2412 ASET (val
, 0, Ffont_xlfd_name (font_object
));
2413 if (font
->file_name
)
2414 ASET (val
, 1, make_unibyte_string (font
->file_name
,
2415 strlen (font
->file_name
)));
2416 ASET (val
, 2, make_number (font
->pixel_size
));
2417 ASET (val
, 3, make_number (font
->font
.size
));
2418 ASET (val
, 4, make_number (font
->ascent
));
2419 ASET (val
, 5, make_number (font
->descent
));
2420 ASET (val
, 6, make_number (font
->font
.space_width
));
2421 ASET (val
, 7, make_number (font
->font
.average_width
));
2422 if (font
->driver
->otf_capability
)
2423 ASET (val
, 8, font
->driver
->otf_capability (font
));
2427 DEFUN ("get-font-glyphs", Fget_font_glyphs
, Sget_font_glyphs
, 2, 2, 0,
2428 doc
: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING.
2429 Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */)
2430 (font_object
, string
)
2431 Lisp_Object font_object
, string
;
2437 CHECK_FONT_GET_OBJECT (font_object
, font
);
2438 CHECK_STRING (string
);
2439 len
= SCHARS (string
);
2440 vec
= Fmake_vector (make_number (len
), Qnil
);
2441 for (i
= 0; i
< len
; i
++)
2443 Lisp_Object ch
= Faref (string
, make_number (i
));
2447 struct font_metrics metrics
;
2449 code
= font
->driver
->encode_char (font
, c
);
2450 if (code
== FONT_INVALID_CODE
)
2452 val
= Fmake_vector (make_number (6), Qnil
);
2453 if (code
<= MOST_POSITIVE_FIXNUM
)
2454 ASET (val
, 0, make_number (code
));
2456 ASET (val
, 0, Fcons (make_number (code
>> 16),
2457 make_number (code
& 0xFFFF)));
2458 font
->driver
->text_extents (font
, &code
, 1, &metrics
);
2459 ASET (val
, 1, make_number (metrics
.lbearing
));
2460 ASET (val
, 2, make_number (metrics
.rbearing
));
2461 ASET (val
, 3, make_number (metrics
.width
));
2462 ASET (val
, 4, make_number (metrics
.ascent
));
2463 ASET (val
, 5, make_number (metrics
.descent
));
2470 DEFUN ("draw-string", Fdraw_string
, Sdraw_string
, 2, 2, 0,
2471 doc
: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame.
2472 The value is a number of glyphs drawn.
2473 Type C-l to recover what previously shown. */)
2474 (font_object
, string
)
2475 Lisp_Object font_object
, string
;
2477 Lisp_Object frame
= selected_frame
;
2478 FRAME_PTR f
= XFRAME (frame
);
2484 CHECK_FONT_GET_OBJECT (font_object
, font
);
2485 CHECK_STRING (string
);
2486 len
= SCHARS (string
);
2487 code
= alloca (sizeof (unsigned) * len
);
2488 for (i
= 0; i
< len
; i
++)
2490 Lisp_Object ch
= Faref (string
, make_number (i
));
2494 code
[i
] = font
->driver
->encode_char (font
, c
);
2495 if (code
[i
] == FONT_INVALID_CODE
)
2498 face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
2500 if (font
->driver
->prepare_face
)
2501 font
->driver
->prepare_face (f
, face
);
2502 width
= font
->driver
->text_extents (font
, code
, i
, NULL
);
2503 len
= font
->driver
->draw_text (f
, face
, 0, font
->ascent
, code
, i
, width
);
2504 if (font
->driver
->done_face
)
2505 font
->driver
->done_face (f
, face
);
2507 return make_number (len
);
2511 #endif /* FONT_DEBUG */
2514 extern void syms_of_ftfont
P_ (());
2515 extern void syms_of_xfont
P_ (());
2516 extern void syms_of_xftfont
P_ (());
2517 extern void syms_of_ftxfont
P_ (());
2518 extern void syms_of_bdffont
P_ (());
2519 extern void syms_of_w32font
P_ (());
2520 extern void syms_of_atmfont
P_ (());
2525 sort_shift_bits
[FONT_SLANT_INDEX
] = 0;
2526 sort_shift_bits
[FONT_WEIGHT_INDEX
] = 7;
2527 sort_shift_bits
[FONT_SIZE_INDEX
] = 14;
2528 sort_shift_bits
[FONT_WIDTH_INDEX
] = 21;
2529 sort_shift_bits
[FONT_ADSTYLE_INDEX
] = 28;
2530 sort_shift_bits
[FONT_FOUNDRY_INDEX
] = 29;
2531 sort_shift_bits
[FONT_FAMILY_INDEX
] = 30;
2532 sort_shift_bits
[FONT_REGISTRY_INDEX
] = 31;
2533 /* Note that sort_shift_bits[FONT_SLANT_TYPE] is never used. */
2535 staticpro (&font_style_table
);
2536 font_style_table
= Fmake_vector (make_number (3), Qnil
);
2538 staticpro (&font_family_alist
);
2539 font_family_alist
= Qnil
;
2541 DEFSYM (Qfontp
, "fontp");
2543 DEFSYM (Qiso8859_1
, "iso8859-1");
2544 DEFSYM (Qiso10646_1
, "iso10646-1");
2545 DEFSYM (Qunicode_bmp
, "unicode-bmp");
2547 DEFSYM (QCotf
, ":otf");
2548 DEFSYM (QClanguage
, ":language");
2549 DEFSYM (QCscript
, ":script");
2551 DEFSYM (QCfoundry
, ":foundry");
2552 DEFSYM (QCadstyle
, ":adstyle");
2553 DEFSYM (QCregistry
, ":registry");
2554 DEFSYM (QCextra
, ":extra");
2556 staticpro (&null_string
);
2557 null_string
= build_string ("");
2558 staticpro (&null_vector
);
2559 null_vector
= Fmake_vector (make_number (0), Qnil
);
2561 staticpro (&scratch_font_spec
);
2562 scratch_font_spec
= Ffont_spec (0, NULL
);
2563 staticpro (&scratch_font_prefer
);
2564 scratch_font_prefer
= Ffont_spec (0, NULL
);
2567 defsubr (&Sfont_spec
);
2568 defsubr (&Sfont_get
);
2569 defsubr (&Sfont_put
);
2570 defsubr (&Slist_fonts
);
2571 defsubr (&Slist_families
);
2572 defsubr (&Sfind_font
);
2573 defsubr (&Sfont_xlfd_name
);
2574 defsubr (&Sclear_font_cache
);
2575 defsubr (&Sinternal_set_font_style_table
);
2576 defsubr (&Sfont_make_gstring
);
2577 defsubr (&Sfont_fill_gstring
);
2580 defsubr (&Sopen_font
);
2581 defsubr (&Sclose_font
);
2582 defsubr (&Squery_font
);
2583 defsubr (&Sget_font_glyphs
);
2585 defsubr (&Sdraw_string
);
2587 #endif /* FONT_DEBUG */
2589 #ifdef HAVE_FREETYPE
2591 #ifdef HAVE_X_WINDOWS
2596 #endif /* HAVE_XFT */
2597 #endif /* HAVE_X_WINDOWS */
2598 #else /* not HAVE_FREETYPE */
2599 #ifdef HAVE_X_WINDOWS
2601 #endif /* HAVE_X_WINDOWS */
2602 #endif /* not HAVE_FREETYPE */
2605 #endif /* HAVE_BDFFONT */
2608 #endif /* WINDOWSNT */
2614 /* arch-tag: 74c9475d-5976-4c93-a327-942ae3072846
2615 (do not change this comment) */