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
374 XLFD_FOUNDRY_MASK
= 0x0001,
375 XLFD_FAMILY_MASK
= 0x0002,
376 XLFD_WEIGHT_MASK
= 0x0004,
377 XLFD_SLANT_MASK
= 0x0008,
378 XLFD_SWIDTH_MASK
= 0x0010,
379 XLFD_ADSTYLE_MASK
= 0x0020,
380 XLFD_PIXEL_MASK
= 0x0040,
381 XLFD_POINT_MASK
= 0x0080,
382 XLFD_RESX_MASK
= 0x0100,
383 XLFD_RESY_MASK
= 0x0200,
384 XLFD_SPACING_MASK
= 0x0400,
385 XLFD_AVGWIDTH_MASK
= 0x0800,
386 XLFD_REGISTRY_MASK
= 0x1000,
387 XLFD_ENCODING_MASK
= 0x2000
391 /* Return a Lispy value for string at STR and bytes LEN.
392 If LEN == 0, return a null string.
393 If the string is "*", return Qnil.
394 It is assured that LEN < 256. */
397 intern_font_field (str
, len
)
405 if (*str
== '*' && len
== 1)
409 for (i
= 1; i
< len
; i
++)
410 if (! isdigit (str
[i
]))
413 return make_number (atoi (str
));
415 return intern_downcase (str
, len
);
418 /* Parse P pointing the pixel/point size field of the form
419 `[A B C D]' which specifies a transformation matrix:
425 by which all glyphs of the font are transformed. The spec says
426 that scalar value N for the pixel/point size is equivalent to:
427 A = N * resx/resy, B = C = 0, D = N.
429 Return the scalar value N if the form is valid. Otherwise return
440 for (i
= 0, p
++; i
< 4 && *p
&& *p
!= ']'; i
++)
443 matrix
[i
] = - strtod (p
+ 1, &end
);
445 matrix
[i
] = strtod (p
, &end
);
448 return (i
== 4 ? (int) matrix
[3] : -1);
451 /* Expand a wildcard field in FIELD (the first N fields are filled) to
452 multiple fields to fill in all 14 XLFD fields while restring a
453 field position by its contents. */
456 font_expand_wildcards (field
, n
)
457 Lisp_Object field
[XLFD_LAST_INDEX
];
461 Lisp_Object tmp
[XLFD_LAST_INDEX
];
462 /* Array of information about where this element can go. Nth
463 element is for Nth element of FIELD. */
465 /* Minimum possible field. */
467 /* Maxinum possible field. */
469 /* Bit mask of possible field. Nth bit corresponds to Nth field. */
471 } range
[XLFD_LAST_INDEX
];
475 #define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \
476 | XLFD_ADSTYLE_MASK | XLFD_REGISTRY_MASK)
477 #define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK)
478 #define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \
479 | XLFD_AVGWIDTH_MASK)
480 #define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK)
482 /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th
483 field. The value is shifted to left one bit by one in the
485 for (i
= 0, range_mask
= 0; i
<= 14 - n
; i
++)
486 range_mask
= (range_mask
<< 1) | 1;
488 for (i
= 0; i
< n
; i
++, range_mask
<<= 1)
490 /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a
491 position-based retriction for FIELD[I]. */
492 int range_from
= i
, range_to
= 14 - n
+ i
;
493 Lisp_Object val
= field
[i
];
499 range
[i
].from
= range_from
;
500 range
[i
].to
= range_to
;
501 range
[i
].mask
= range_mask
;
505 /* The triplet FROM, TO, and MASK is a value-based
506 retriction for FIELD[I]. */
512 int numeric
= XINT (val
);
515 from
= to
= XLFD_ENCODING_INDEX
,
516 mask
= XLFD_ENCODING_MASK
;
517 else if (numeric
<= 48)
518 from
= to
= XLFD_PIXEL_INDEX
,
519 mask
= XLFD_PIXEL_MASK
;
521 from
= XLFD_POINT_INDEX
, to
= XLFD_AVGWIDTH_MASK
,
522 mask
= XLFD_LARGENUM_MASK
;
524 else if (EQ (val
, null_string
))
525 from
= XLFD_FOUNDRY_INDEX
, to
= XLFD_ADSTYLE_INDEX
,
526 mask
= XLFD_NULL_MASK
;
528 from
= to
= XLFD_FOUNDRY_INDEX
, mask
= XLFD_FOUNDRY_MASK
;
531 Lisp_Object name
= SYMBOL_NAME (val
);
533 if (SDATA (name
)[SBYTES (name
) - 1] == '*')
534 from
= XLFD_REGISTRY_INDEX
, to
= XLFD_ENCODING_INDEX
,
535 mask
= XLFD_REGENC_MASK
;
537 from
= to
= XLFD_ENCODING_INDEX
,
538 mask
= XLFD_ENCODING_MASK
;
540 else if (range_from
<= XLFD_WEIGHT_INDEX
541 && range_to
>= XLFD_WEIGHT_INDEX
542 && !NILP (prop_name_to_numeric (FONT_WEIGHT_INDEX
, val
)))
543 from
= to
= XLFD_WEIGHT_INDEX
, mask
= XLFD_WEIGHT_MASK
;
544 else if (range_from
<= XLFD_SLANT_INDEX
545 && range_to
>= XLFD_SLANT_INDEX
546 && !NILP (prop_name_to_numeric (FONT_SLANT_INDEX
, val
)))
547 from
= to
= XLFD_SLANT_INDEX
, mask
= XLFD_SLANT_MASK
;
548 else if (range_from
<= XLFD_SWIDTH_INDEX
549 && range_to
>= XLFD_SWIDTH_INDEX
550 && !NILP (prop_name_to_numeric (FONT_WIDTH_INDEX
, val
)))
551 from
= to
= XLFD_SWIDTH_INDEX
, mask
= XLFD_SWIDTH_MASK
;
554 Lisp_Object name
= SYMBOL_NAME (val
);
556 if (SBYTES (name
) == 1
557 && (SDATA (name
)[0] == 'c'
558 || SDATA (name
)[0] == 'm'
559 || SDATA (name
)[0] == 'p'))
560 from
= to
= XLFD_SPACING_INDEX
, mask
= XLFD_SPACING_MASK
;
562 from
= XLFD_FOUNDRY_INDEX
, to
= XLFD_ENCODING_INDEX
,
563 mask
= XLFD_SYMBOL_MASK
;
566 /* Merge position-based and value-based restrictions. */
568 while (from
< range_from
)
569 mask
&= ~(1 << from
++);
570 while (from
< 14 && ! (mask
& (1 << from
)))
572 while (to
> range_to
)
573 mask
&= ~(1 << to
--);
574 while (to
>= 0 && ! (mask
& (1 << to
)))
578 range
[i
].from
= from
;
580 range
[i
].mask
= mask
;
582 if (from
> range_from
|| to
< range_to
)
583 /* The range is narrowed by value-based restrictions.
584 Reflect it to the previous fields. */
585 for (j
= i
- 1, from
--, to
--; j
>= 0; j
--, from
--, to
--)
587 /* Check FROM for non-wildcard field. */
588 if (! NILP (tmp
[j
]) && range
[j
].from
< from
)
590 while (range
[j
].from
< from
)
591 range
[j
].mask
&= ~(1 << range
[j
].from
++);
592 while (from
< 14 && ! (range
[j
].mask
& (1 << from
)))
594 range
[j
].from
= from
;
597 from
= range
[j
].from
;
598 if (range
[j
].to
> to
)
600 while (range
[j
].to
> to
)
601 range
[j
].mask
&= ~(1 << range
[j
].to
--);
602 while (to
>= 0 && ! (range
[j
].mask
& (1 << to
)))
614 /* Decide all fileds from restrictions in RANGE. */
615 for (i
= j
= 0; i
< n
; i
++)
617 if (j
< range
[i
].from
)
619 if (i
== 0 || ! NILP (tmp
[i
- 1]))
620 /* None of TMP[X] corresponds to Jth field. */
622 for (; j
< range
[i
].from
; j
++)
627 if (! NILP (tmp
[n
- 1]) && j
< XLFD_REGISTRY_INDEX
)
629 for (; j
< XLFD_LAST_INDEX
; j
++)
631 if (INTEGERP (field
[XLFD_ENCODING_INDEX
]))
632 field
[XLFD_ENCODING_INDEX
]
633 = Fintern (Fnumber_to_string (field
[XLFD_ENCODING_INDEX
]), Qnil
);
637 /* Parse NAME (null terminated) as XLFD and store information in FONT
638 (font-spec or font-entity). See font_parse_name for more
642 font_parse_xlfd (name
, font
, merge
)
647 int len
= strlen (name
);
649 int pixel_size
, resy
, avgwidth
;
651 Lisp_Object f
[XLFD_LAST_INDEX
];
656 /* Maximum XLFD name length is 255. */
658 i
= (name
[0] == '*' && name
[1] == '-');
659 for (p
= name
+ 1; *p
; p
++)
664 if (i
== XLFD_ENCODING_INDEX
)
669 pixel_size
= resy
= avgwidth
= -1;
672 if (i
== XLFD_ENCODING_INDEX
)
674 /* Fully specified XLFD. */
677 for (i
= 0, p
= name
; ; p
++)
681 if (i
< XLFD_PIXEL_INDEX
)
682 f
[i
++] = intern_font_field (name
, p
- name
);
683 else if (i
== XLFD_PIXEL_INDEX
)
686 pixel_size
= atoi (name
);
687 else if (*name
== '[')
688 pixel_size
= parse_matrix (name
);
691 else if (i
== XLFD_POINT_INDEX
)
696 point_size
= atoi (name
);
697 else if (*name
== '[')
698 point_size
= parse_matrix (name
);
702 else if (i
== XLFD_RESX_INDEX
)
704 /* Skip this field. */
707 else if (i
== XLFD_RESY_INDEX
)
709 /* Stuff RESY, SPACING, and AVGWIDTH. */
710 if (pixel_size
< 0 && isdigit (*name
))
712 for (p
++; *p
!= '-'; p
++);
714 avgwidth
= atoi (p
+ 1);
715 else if (p
[1] == '~' && isdigit (p
[2]))
716 avgwidth
= atoi (p
+ 2);
717 for (p
++; *p
!= '-'; p
++);
718 if (FONT_ENTITY_P (font
))
719 f
[i
] = intern_font_field (name
, p
- name
);
722 i
= XLFD_REGISTRY_INDEX
;
726 /* Stuff REGISTRY and ENCODING. */
728 f
[i
++] = intern_font_field (name
, p
- name
);
734 xassert (i
== XLFD_ENCODING_INDEX
);
738 int wild_card_found
= 0;
742 for (i
= 0, p
= name
; ; p
++)
744 if (*p
== '-' || ! *p
)
753 else if (isdigit (*name
))
755 f
[i
++] = make_number (atoi (name
));
756 /* Check if all chars in this field is number. */
758 while (isdigit (*name
)) name
++;
763 f
[i
++] = null_string
;
766 f
[i
++] = intern_downcase (name
, p
- name
);
773 if (! wild_card_found
)
775 if (font_expand_wildcards (f
, i
) < 0)
777 if (! NILP (f
[XLFD_PIXEL_INDEX
]))
778 pixel_size
= XINT (f
[XLFD_PIXEL_INDEX
]);
779 if (! NILP (f
[XLFD_POINT_INDEX
]))
780 point_size
= XINT (f
[XLFD_POINT_INDEX
]);
781 if (! NILP (f
[XLFD_RESY_INDEX
]))
782 resy
= XINT (f
[XLFD_RESY_INDEX
]);
783 if (! NILP (f
[XLFD_AVGWIDTH_INDEX
]))
784 avgwidth
= XINT (f
[XLFD_AVGWIDTH_INDEX
]);
785 if (NILP (f
[XLFD_REGISTRY_INDEX
]))
787 if (! NILP (f
[XLFD_ENCODING_INDEX
]))
788 f
[XLFD_REGISTRY_INDEX
]
789 = Fintern (concat2 (build_string ("*-"),
790 SYMBOL_NAME (f
[XLFD_ENCODING_INDEX
])), Qnil
);
794 if (! NILP (f
[XLFD_ENCODING_INDEX
]))
795 f
[XLFD_REGISTRY_INDEX
]
796 = Fintern (concat2 (SYMBOL_NAME (f
[XLFD_REGISTRY_INDEX
]),
797 SYMBOL_NAME (f
[XLFD_ENCODING_INDEX
])), Qnil
);
801 if (! merge
|| NILP (AREF (font
, FONT_FOUNDRY_INDEX
)))
802 ASET (font
, FONT_FOUNDRY_INDEX
, f
[XLFD_FOUNDRY_INDEX
]);
803 if (! merge
|| NILP (AREF (font
, FONT_FAMILY_INDEX
)))
804 ASET (font
, FONT_FAMILY_INDEX
, f
[XLFD_FAMILY_INDEX
]);
805 if (! merge
|| NILP (AREF (font
, FONT_ADSTYLE_INDEX
)))
806 ASET (font
, FONT_ADSTYLE_INDEX
, f
[XLFD_ADSTYLE_INDEX
]);
807 if (! merge
|| NILP (AREF (font
, FONT_REGISTRY_INDEX
)))
808 ASET (font
, FONT_REGISTRY_INDEX
, f
[XLFD_REGISTRY_INDEX
]);
810 for (i
= FONT_WEIGHT_INDEX
, j
= XLFD_WEIGHT_INDEX
;
811 j
<= XLFD_SWIDTH_INDEX
; i
++, j
++)
812 if (! merge
|| NILP (AREF (font
, i
)))
814 if (! INTEGERP (f
[j
]))
816 val
= prop_name_to_numeric (i
, f
[j
]);
820 ASET (font
, i
, f
[j
]);
823 if (pixel_size
< 0 && FONT_ENTITY_P (font
))
826 if (! merge
|| NILP (AREF (font
, FONT_SIZE_INDEX
)))
829 ASET (font
, FONT_SIZE_INDEX
, make_number (pixel_size
));
830 else if (point_size
>= 0)
834 pixel_size
= POINT_TO_PIXEL (point_size
, resy
);
835 ASET (font
, FONT_SIZE_INDEX
, make_number (pixel_size
));
839 ASET (font
, FONT_SIZE_INDEX
, make_float (point_size
/ 10));
844 if (FONT_ENTITY_P (font
)
845 && EQ (AREF (font
, FONT_TYPE_INDEX
), Qx
))
846 ASET (font
, FONT_EXTRA_INDEX
, f
[XLFD_RESY_INDEX
]);
848 return (avgwidth
> 0 ? 2 : resy
== 0);
851 /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES
852 length), and return the name length. If FONT_SIZE_INDEX of FONT is
853 0, use PIXEL_SIZE instead. */
856 font_unparse_xlfd (font
, pixel_size
, name
, nbytes
)
862 char *f
[XLFD_REGISTRY_INDEX
+ 1], *pixel_point
;
867 xassert (FONTP (font
));
869 for (i
= FONT_FOUNDRY_INDEX
, j
= XLFD_FOUNDRY_INDEX
; i
<= FONT_REGISTRY_INDEX
;
872 if (i
== FONT_ADSTYLE_INDEX
)
873 j
= XLFD_ADSTYLE_INDEX
;
874 else if (i
== FONT_REGISTRY_INDEX
)
875 j
= XLFD_REGISTRY_INDEX
;
876 val
= AREF (font
, i
);
879 if (j
== XLFD_REGISTRY_INDEX
)
880 f
[j
] = "*-*", len
+= 4;
882 f
[j
] = "*", len
+= 2;
887 val
= SYMBOL_NAME (val
);
888 if (j
== XLFD_REGISTRY_INDEX
889 && ! strchr ((char *) SDATA (val
), '-'))
891 /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */
892 if (SDATA (val
)[SBYTES (val
) - 1] == '*')
894 f
[j
] = alloca (SBYTES (val
) + 3);
895 sprintf (f
[j
], "%s-*", SDATA (val
));
896 len
+= SBYTES (val
) + 3;
900 f
[j
] = alloca (SBYTES (val
) + 4);
901 sprintf (f
[j
], "%s*-*", SDATA (val
));
902 len
+= SBYTES (val
) + 4;
906 f
[j
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
910 for (i
= FONT_WEIGHT_INDEX
, j
= XLFD_WEIGHT_INDEX
; i
<= FONT_WIDTH_INDEX
;
913 val
= AREF (font
, i
);
915 f
[j
] = "*", len
+= 2;
919 val
= prop_numeric_to_name (i
, XINT (val
));
921 val
= SYMBOL_NAME (val
);
922 xassert (STRINGP (val
));
923 f
[j
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
927 val
= AREF (font
, FONT_SIZE_INDEX
);
928 xassert (NUMBERP (val
) || NILP (val
));
933 len
+= sprintf (work
, "%d", i
) + 1;
935 len
+= sprintf (work
, "%d-*", pixel_size
) + 1;
938 else if (FLOATP (val
))
940 i
= XFLOAT_DATA (val
) * 10;
941 len
+= sprintf (work
, "*-%d", i
) + 1;
945 pixel_point
= "*-*", len
+= 4;
947 if (FONT_ENTITY_P (font
)
948 && EQ (AREF (font
, FONT_TYPE_INDEX
), Qx
))
950 /* Setup names for RESY-SPACING-AVWIDTH. */
951 val
= AREF (font
, FONT_EXTRA_INDEX
);
952 if (SYMBOLP (val
) && ! NILP (val
))
954 val
= SYMBOL_NAME (val
);
955 f
[XLFD_RESY_INDEX
] = (char *) SDATA (val
), len
+= SBYTES (val
) + 1;
958 f
[XLFD_RESY_INDEX
] = "*-*-*", len
+= 6;
961 f
[XLFD_RESY_INDEX
] = "*-*-*", len
+= 6;
963 len
+= 3; /* for "-*" of resx, and terminating '\0'. */
966 return sprintf (name
, "-%s-%s-%s-%s-%s-%s-%s-*-%s-%s",
967 f
[XLFD_FOUNDRY_INDEX
], f
[XLFD_FAMILY_INDEX
],
968 f
[XLFD_WEIGHT_INDEX
], f
[XLFD_SLANT_INDEX
],
969 f
[XLFD_SWIDTH_INDEX
],
970 f
[XLFD_ADSTYLE_INDEX
], pixel_point
,
971 f
[XLFD_RESY_INDEX
], f
[XLFD_REGISTRY_INDEX
]);
974 /* Parse NAME (null terminated) as Fonconfig's name format and store
975 information in FONT (font-spec or font-entity). See
976 font_parse_name for more detail. */
979 font_parse_fcname (name
, font
, merge
)
985 Lisp_Object family
= Qnil
;
986 double point_size
= 0;
988 Lisp_Object extra
= AREF (font
, FONT_EXTRA_INDEX
);
990 /* It is assured that (name[0] && name[0] != '-'). */
995 for (p0
= name
+ 1; *p0
&& (*p0
!= '-' && *p0
!= ':'); p0
++);
996 if (isdigit (name
[0]) && *p0
!= '-')
997 point_size
= strtod (name
, NULL
);
1000 family
= intern_font_field (name
, p0
- name
);
1003 point_size
= strtod (p0
+ 1, &p1
);
1004 if (*p1
&& *p1
!= ':')
1009 if (! merge
|| NILP (AREF (font
, FONT_FAMILY_INDEX
)))
1010 ASET (font
, FONT_FAMILY_INDEX
, family
);
1014 Lisp_Object key
, val
;
1015 enum font_property_index prop
;
1017 p1
= index (name
, '=');
1020 if (memcmp (p0
+ 1, "pixelsize=", 10) == 0)
1021 prop
= FONT_SIZE_INDEX
;
1024 key
= intern_font_field (p0
, p1
- p0
);
1025 prop
= check_font_prop_name (key
);
1028 for (p1
= p0
; *p1
&& *p1
!= ':'; p1
++);
1029 if (prop
== FONT_SIZE_INDEX
)
1031 pixel_size
= atoi (p0
);
1035 val
= intern_font_field (p0
, p1
- p0
);
1036 if (prop
< FONT_EXTRA_INDEX
)
1038 if (! merge
|| NILP (AREF (font
, prop
)))
1040 val
= font_property_table
[prop
].validater (prop
, val
);
1041 if (! EQ (val
, Qerror
))
1042 ASET (font
, prop
, val
);
1047 if (! merge
|| NILP (Fplist_get (extra
, key
)))
1048 extra
= Fplist_put (extra
, key
, val
);
1053 ASET (font
, FONT_EXTRA_INDEX
, extra
);
1054 if (! merge
|| NILP (AREF (font
, FONT_SIZE_INDEX
)))
1057 ASET (font
, FONT_SIZE_INDEX
, make_float (point_size
));
1058 else if (pixel_size
> 0)
1059 ASET (font
, FONT_SIZE_INDEX
, make_number (pixel_size
));
1062 return (NILP (AREF (font
, FONT_SIZE_INDEX
)) ? 1 : 2);
1065 /* Store fontconfig's font name of FONT (font-spec or font-entity) in
1066 NAME (NBYTES length), and return the name length. If
1067 FONT_SIZE_INDEX of FONT is 0, use PIXEL_SIZE instead. */
1070 font_unparse_fcname (font
, pixel_size
, name
, nbytes
)
1076 Lisp_Object val
, size
;
1080 Lisp_Object styles
[3];
1081 char *style_names
[3] = { "weight", "slant", "swidth" };
1083 if (SYMBOLP (AREF (font
, FONT_FAMILY_INDEX
))
1084 && ! NILP (AREF (font
, FONT_FAMILY_INDEX
)))
1085 len
+= SBYTES (SYMBOL_NAME (AREF (font
, FONT_FAMILY_INDEX
)));
1086 size
= AREF (font
, FONT_SIZE_INDEX
);
1087 if (INTEGERP (size
))
1089 if (XINT (size
) > 0)
1090 pixel_size
= XINT (size
);
1092 len
+= 21; /* for ":pixelsize=NUM" */
1094 else if (FLOATP (size
))
1096 pt
= (int) XFLOAT_DATA (size
);
1098 len
+= 11; /* for "-NUM" */
1100 if (SYMBOLP (AREF (font
, FONT_FOUNDRY_INDEX
))
1101 && ! NILP (AREF (font
, FONT_FOUNDRY_INDEX
)))
1102 /* ":foundry=NAME" */
1103 len
+= 9 + SBYTES (SYMBOL_NAME (AREF (font
, FONT_FOUNDRY_INDEX
)));
1104 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_WIDTH_INDEX
; i
++)
1106 val
= AREF (font
, i
);
1109 val
= prop_numeric_to_name (i
, XINT (val
));
1110 len
+= (strlen (style_names
[i
- FONT_WEIGHT_INDEX
])
1111 + 2 + SBYTES (SYMBOL_NAME (val
))); /* :xxx=NAME */
1113 styles
[i
- FONT_WEIGHT_INDEX
] = val
;
1118 if (! NILP (AREF (font
, FONT_FAMILY_INDEX
)))
1119 p
+= sprintf(p
, "%s",
1120 SDATA (SYMBOL_NAME (AREF (font
, FONT_FAMILY_INDEX
))));
1122 p
+= sprintf (p
, "-%d", pt
);
1123 else if (pixel_size
> 0)
1124 p
+= sprintf (p
, ":pixelsize=%d", pixel_size
);
1125 if (SYMBOLP (AREF (font
, FONT_FOUNDRY_INDEX
))
1126 && ! NILP (AREF (font
, FONT_FOUNDRY_INDEX
)))
1127 p
+= sprintf (p
, ":foundry=%s",
1128 SDATA (SYMBOL_NAME (AREF (font
, FONT_FOUNDRY_INDEX
))));
1129 for (i
= 0; i
< 3; i
++)
1130 if (! NILP (styles
[i
]))
1131 p
+= sprintf (p
, ":%s=%s", style_names
[i
],
1132 SDATA (SYMBOL_NAME (styles
[i
])));
1136 /* Parse NAME (null terminated) and store information in FONT
1137 (font-spec or font-entity). If NAME is successfully parsed, return
1138 2 (size is specified), 1 (size is not specified), or 0 (size is not
1139 specified but resolution is specified). Otherwise return -1.
1141 If NAME is XLFD and FONT is a font-entity, store
1142 RESY-SPACING-AVWIDTH information as a symbol in FONT_EXTRA_INDEX.
1144 If MERGE is nonzero, set a property of FONT only when it's nil. */
1147 font_parse_name (name
, font
, merge
)
1152 if (name
[0] == '-' || index (name
, '*'))
1153 return font_parse_xlfd (name
, font
, merge
);
1155 return font_parse_fcname (name
, font
, merge
);
1160 font_merge_old_spec (name
, family
, registry
, spec
)
1161 Lisp_Object name
, family
, registry
, spec
;
1165 if (font_parse_xlfd ((char *) SDATA (name
), spec
, 1) < 0)
1167 Lisp_Object extra
= Fcons (Fcons (QCname
, name
), Qnil
);
1169 ASET (spec
, FONT_EXTRA_INDEX
, extra
);
1174 if (! NILP (family
))
1179 xassert (STRINGP (family
));
1180 len
= SBYTES (family
);
1181 p0
= (char *) SDATA (family
);
1182 p1
= index (p0
, '-');
1185 if (NILP (AREF (spec
, FONT_FOUNDRY_INDEX
)))
1186 ASET (spec
, FONT_FOUNDRY_INDEX
,
1187 intern_downcase (p0
, p1
- p0
));
1188 if (NILP (AREF (spec
, FONT_FAMILY_INDEX
)))
1189 ASET (spec
, FONT_FAMILY_INDEX
,
1190 intern_downcase (p1
+ 1, len
- (p1
+ 1 - p0
)));
1192 else if (NILP (AREF (spec
, FONT_FAMILY_INDEX
)))
1193 ASET (spec
, FONT_FAMILY_INDEX
, intern_downcase (p0
, len
));
1195 if (! NILP (registry
)
1196 && NILP (AREF (spec
, FONT_REGISTRY_INDEX
)))
1197 ASET (spec
, FONT_REGISTRY_INDEX
,
1198 intern_downcase ((char *) SDATA (registry
), SBYTES (registry
)));
1212 struct otf_list
*next
;
1215 static struct otf_list
*otf_list
;
1218 otf_tag_symbol (tag
)
1223 OTF_tag_name (tag
, name
);
1224 return Fintern (make_unibyte_string (name
, 4), Qnil
);
1228 otf_open (entity
, file
)
1232 struct otf_list
*list
= otf_list
;
1234 while (list
&& ! EQ (list
->entity
, entity
))
1238 list
= malloc (sizeof (struct otf_list
));
1239 list
->entity
= entity
;
1240 list
->otf
= file
? OTF_open (file
) : NULL
;
1241 list
->next
= otf_list
;
1248 /* Return a list describing which scripts/languages FONT supports by
1249 which GSUB/GPOS features of OpenType tables. See the comment of
1250 (sturct font_driver).otf_capability. */
1253 font_otf_capability (font
)
1257 Lisp_Object capability
= Fcons (Qnil
, Qnil
);
1260 otf
= otf_open (font
->entity
, font
->file_name
);
1263 for (i
= 0; i
< 2; i
++)
1265 OTF_GSUB_GPOS
*gsub_gpos
;
1266 Lisp_Object script_list
= Qnil
;
1269 if (OTF_get_features (otf
, i
== 0) < 0)
1271 gsub_gpos
= i
== 0 ? otf
->gsub
: otf
->gpos
;
1272 for (j
= gsub_gpos
->ScriptList
.ScriptCount
- 1; j
>= 0; j
--)
1274 OTF_Script
*script
= gsub_gpos
->ScriptList
.Script
+ j
;
1275 Lisp_Object langsys_list
= Qnil
;
1276 Lisp_Object script_tag
= otf_tag_symbol (script
->ScriptTag
);
1279 for (k
= script
->LangSysCount
; k
>= 0; k
--)
1281 OTF_LangSys
*langsys
;
1282 Lisp_Object feature_list
= Qnil
;
1283 Lisp_Object langsys_tag
;
1286 if (j
== script
->LangSysCount
)
1288 langsys
= &script
->DefaultLangSys
;
1293 langsys
= script
->LangSys
+ k
;
1295 = otf_tag_symbol (script
->LangSysRecord
[k
].LangSysTag
);
1297 for (l
= langsys
->FeatureCount
-1; l
>= 0; l
--)
1299 OTF_Feature
*feature
1300 = gsub_gpos
->FeatureList
.Feature
+ langsys
->FeatureIndex
[l
];
1301 Lisp_Object feature_tag
1302 = otf_tag_symbol (feature
->FeatureTag
);
1304 feature_list
= Fcons (feature_tag
, feature_list
);
1306 langsys_list
= Fcons (Fcons (langsys_tag
, feature_list
),
1309 script_list
= Fcons (Fcons (script_tag
, langsys_list
),
1314 XSETCAR (capability
, script_list
);
1316 XSETCDR (capability
, script_list
);
1323 parse_gsub_gpos_spec (spec
, script
, langsys
, features
)
1325 char **script
, **langsys
, **features
;
1333 *script
= (char *) SDATA (SYMBOL_NAME (val
));
1336 *langsys
= NILP (val
) ? NULL
: (char *) SDATA (SYMBOL_NAME (val
));
1338 len
= XINT (Flength (spec
));
1339 *features
= p
= malloc (6 * len
);
1343 for (asterisk
= 0; CONSP (spec
); spec
= XCDR (spec
))
1346 if (SREF (SYMBOL_NAME (val
), 0) == '*')
1349 p
+= sprintf (p
, ",*");
1351 else if (! asterisk
)
1352 p
+= sprintf (p
, ",%s", SDATA (SYMBOL_NAME (val
)));
1354 p
+= sprintf (p
, ",~%s", SDATA (SYMBOL_NAME (val
)));
1359 #define DEVICE_DELTA(table, size) \
1360 (((size) >= (table).StartSize && (size) <= (table).EndSize) \
1361 ? (table).DeltaValue[(size) >= (table).StartSize] \
1365 adjust_anchor (struct font
*font
, OTF_Anchor
*anchor
,
1366 unsigned code
, int size
, int *x
, int *y
)
1368 if (anchor
->AnchorFormat
== 2)
1372 if (font
->driver
->anchor_point (font
, code
, anchor
->f
.f1
.AnchorPoint
,
1376 else if (anchor
->AnchorFormat
== 3)
1378 if (anchor
->f
.f2
.XDeviceTable
.offset
)
1379 *x
+= DEVICE_DELTA (anchor
->f
.f2
.XDeviceTable
, size
);
1380 if (anchor
->f
.f2
.YDeviceTable
.offset
)
1381 *y
+= DEVICE_DELTA (anchor
->f
.f2
.YDeviceTable
, size
);
1386 /* Drive FONT's OTF GSUB features according to GSUB_SPEC. See the
1387 comment of (sturct font_driver).otf_gsub. */
1390 font_otf_gsub (font
, gsub_spec
, gstring_in
, from
, to
, gstring_out
, idx
)
1392 Lisp_Object gsub_spec
;
1393 Lisp_Object gstring_in
;
1395 Lisp_Object gstring_out
;
1401 OTF_GlyphString otf_gstring
;
1403 char *script
, *langsys
, *features
;
1405 otf
= otf_open (font
->entity
, font
->file_name
);
1408 if (OTF_get_table (otf
, "head") < 0)
1410 if (OTF_check_table (otf
, "GSUB") < 0)
1412 if (parse_gsub_gpos_spec (gsub_spec
, &script
, &langsys
, &features
) < 0)
1415 otf_gstring
.size
= otf_gstring
.used
= len
;
1416 otf_gstring
.glyphs
= (OTF_Glyph
*) malloc (sizeof (OTF_Glyph
) * len
);
1417 memset (otf_gstring
.glyphs
, 0, sizeof (OTF_Glyph
) * len
);
1418 for (i
= 0; i
< len
; i
++)
1420 Lisp_Object g
= LGSTRING_GLYPH (gstring_in
, from
+ i
);
1422 otf_gstring
.glyphs
[i
].c
= XINT (LGLYPH_CHAR (g
));
1423 otf_gstring
.glyphs
[i
].glyph_id
= XINT (LGLYPH_CODE (g
));
1426 OTF_drive_gdef (otf
, &otf_gstring
);
1427 if (OTF_drive_gsub (otf
, &otf_gstring
, script
, langsys
, features
) < 0)
1429 free (otf_gstring
.glyphs
);
1432 if (ASIZE (gstring_out
) < idx
+ otf_gstring
.used
)
1434 free (otf_gstring
.glyphs
);
1438 for (i
= 0, g
= otf_gstring
.glyphs
; i
< otf_gstring
.used
;)
1440 int i0
= g
->f
.index
.from
, i1
= g
->f
.index
.to
;
1441 Lisp_Object glyph
= LGSTRING_GLYPH (gstring_in
, from
+ i0
);
1442 Lisp_Object min_idx
= AREF (glyph
, 0);
1443 Lisp_Object max_idx
= AREF (glyph
, 1);
1447 int min_idx_i
= XINT (min_idx
), max_idx_i
= XINT (max_idx
);
1449 for (i0
++; i0
<= i1
; i0
++)
1451 glyph
= LGSTRING_GLYPH (gstring_in
, from
+ i0
);
1452 if (min_idx_i
> XINT (AREF (glyph
, 0)))
1453 min_idx_i
= XINT (AREF (glyph
, 0));
1454 if (max_idx_i
< XINT (AREF (glyph
, 1)))
1455 max_idx_i
= XINT (AREF (glyph
, 1));
1457 min_idx
= make_number (min_idx_i
);
1458 max_idx
= make_number (max_idx_i
);
1459 i0
= g
->f
.index
.from
;
1461 for (; i
< otf_gstring
.used
&& g
->f
.index
.from
== i0
; i
++, g
++)
1463 glyph
= LGSTRING_GLYPH (gstring_out
, idx
+ i
);
1464 ASET (glyph
, 0, min_idx
);
1465 ASET (glyph
, 1, max_idx
);
1466 LGLYPH_SET_CHAR (glyph
, make_number (g
->c
));
1467 LGLYPH_SET_CODE (glyph
, make_number (g
->glyph_id
));
1471 free (otf_gstring
.glyphs
);
1475 /* Drive FONT's OTF GPOS features according to GPOS_SPEC. See the
1476 comment of (sturct font_driver).otf_gpos. */
1479 font_otf_gpos (font
, gpos_spec
, gstring
, from
, to
)
1481 Lisp_Object gpos_spec
;
1482 Lisp_Object gstring
;
1488 OTF_GlyphString otf_gstring
;
1490 char *script
, *langsys
, *features
;
1493 Lisp_Object base
, mark
;
1495 otf
= otf_open (font
->entity
, font
->file_name
);
1498 if (OTF_get_table (otf
, "head") < 0)
1500 if (OTF_check_table (otf
, "GPOS") < 0)
1502 if (parse_gsub_gpos_spec (gpos_spec
, &script
, &langsys
, &features
) < 0)
1505 otf_gstring
.size
= otf_gstring
.used
= len
;
1506 otf_gstring
.glyphs
= (OTF_Glyph
*) malloc (sizeof (OTF_Glyph
) * len
);
1507 memset (otf_gstring
.glyphs
, 0, sizeof (OTF_Glyph
) * len
);
1508 for (i
= 0; i
< len
; i
++)
1510 glyph
= LGSTRING_GLYPH (gstring
, from
+ i
);
1511 otf_gstring
.glyphs
[i
].glyph_id
= XINT (LGLYPH_CODE (glyph
));
1514 OTF_drive_gdef (otf
, &otf_gstring
);
1516 if (OTF_drive_gpos (otf
, &otf_gstring
, script
, langsys
, features
) < 0)
1518 free (otf_gstring
.glyphs
);
1522 u
= otf
->head
->unitsPerEm
;
1523 size
= font
->pixel_size
;
1525 for (i
= 0, g
= otf_gstring
.glyphs
; i
< otf_gstring
.used
; i
++, g
++)
1528 int xoff
= 0, yoff
= 0, width_adjust
= 0;
1533 glyph
= LGSTRING_GLYPH (gstring
, from
+ i
);
1534 switch (g
->positioning_type
)
1540 int format
= g
->f
.f1
.format
;
1542 if (format
& OTF_XPlacement
)
1543 xoff
= g
->f
.f1
.value
->XPlacement
* size
/ u
;
1544 if (format
& OTF_XPlaDevice
)
1545 xoff
+= DEVICE_DELTA (g
->f
.f1
.value
->XPlaDevice
, size
);
1546 if (format
& OTF_YPlacement
)
1547 yoff
= - (g
->f
.f1
.value
->YPlacement
* size
/ u
);
1548 if (format
& OTF_YPlaDevice
)
1549 yoff
-= DEVICE_DELTA (g
->f
.f1
.value
->YPlaDevice
, size
);
1550 if (format
& OTF_XAdvance
)
1551 width_adjust
+= g
->f
.f1
.value
->XAdvance
* size
/ u
;
1552 if (format
& OTF_XAdvDevice
)
1553 width_adjust
+= DEVICE_DELTA (g
->f
.f1
.value
->XAdvDevice
, size
);
1557 /* Not yet supported. */
1563 goto label_adjust_anchor
;
1564 default: /* i.e. case 6 */
1569 label_adjust_anchor
:
1571 int base_x
, base_y
, mark_x
, mark_y
, width
;
1574 base_x
= g
->f
.f4
.base_anchor
->XCoordinate
* size
/ u
;
1575 base_y
= g
->f
.f4
.base_anchor
->YCoordinate
* size
/ u
;
1576 mark_x
= g
->f
.f4
.mark_anchor
->XCoordinate
* size
/ u
;
1577 mark_y
= g
->f
.f4
.mark_anchor
->YCoordinate
* size
/ u
;
1579 code
= XINT (LGLYPH_CODE (prev
));
1580 if (g
->f
.f4
.base_anchor
->AnchorFormat
!= 1)
1581 adjust_anchor (font
, g
->f
.f4
.base_anchor
,
1582 code
, size
, &base_x
, &base_y
);
1583 if (g
->f
.f4
.mark_anchor
->AnchorFormat
!= 1)
1584 adjust_anchor (font
, g
->f
.f4
.mark_anchor
,
1585 code
, size
, &mark_x
, &mark_y
);
1587 if (NILP (LGLYPH_WIDTH (prev
)))
1589 width
= font
->driver
->text_extents (font
, &code
, 1, NULL
);
1590 LGLYPH_SET_WIDTH (prev
, make_number (width
));
1592 xoff
= XINT (LGLYPH_XOFF (prev
)) + (base_x
- width
) - mark_x
;
1593 yoff
= XINT (LGLYPH_YOFF (prev
)) + mark_y
- base_y
;
1596 if (g
->GlyphClass
== OTF_GlyphClass0
)
1597 base
= mark
= glyph
;
1598 else if (g
->GlyphClass
== OTF_GlyphClassMark
)
1603 LGLYPH_SET_XOFF (glyph
, make_number (xoff
));
1604 LGLYPH_SET_YOFF (glyph
, make_number (yoff
));
1605 LGLYPH_SET_WADJUST (glyph
, make_number (width_adjust
));
1608 free (otf_gstring
.glyphs
);
1612 #endif /* HAVE_LIBOTF */
1615 /* glyph-string handler */
1617 /* GSTRING is a vector of this form:
1618 [ [FONT-OBJECT LBEARING RBEARING WITH ASCENT DESCENT] GLYPH ... ]
1619 and GLYPH is a vector of this form:
1620 [ FROM-IDX TO-IDX C CODE X-OFF Y-OFF WIDTH WADJUST ]
1622 FROM-IDX and TO-IDX are used internally and should not be touched.
1623 C is a character of the glyph.
1624 CODE is a glyph-code of C in FONT-OBJECT.
1625 X-OFF and Y-OFF are offests to the base position for the glyph.
1626 WIDTH is a normal width of the glyph.
1627 WADJUST is an adjustment to the normal width of the glyph. */
1630 font_prepare_composition (cmp
)
1631 struct composition
*cmp
;
1634 = AREF (XHASH_TABLE (composition_hash_table
)->key_and_value
,
1635 cmp
->hash_index
* 2);
1636 struct font
*font
= XSAVE_VALUE (LGSTRING_FONT (gstring
))->pointer
;
1637 int len
= LGSTRING_LENGTH (gstring
);
1641 cmp
->lbearing
= cmp
->rbearing
= cmp
->pixel_width
= 0;
1642 cmp
->ascent
= font
->ascent
;
1643 cmp
->descent
= font
->descent
;
1645 for (i
= 0; i
< len
; i
++)
1647 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
1648 unsigned code
= XINT (LGLYPH_CODE (g
));
1649 struct font_metrics metrics
;
1651 font
->driver
->text_extents (font
, &code
, 1, &metrics
);
1652 LGLYPH_SET_WIDTH (g
, make_number (metrics
.width
));
1653 metrics
.lbearing
+= XINT (LGLYPH_XOFF (g
));
1654 metrics
.rbearing
+= XINT (LGLYPH_XOFF (g
));
1655 metrics
.ascent
+= XINT (LGLYPH_YOFF (g
));
1656 metrics
.descent
+= XINT (LGLYPH_YOFF (g
));
1658 if (cmp
->lbearing
> cmp
->pixel_width
+ metrics
.lbearing
)
1659 cmp
->lbearing
= cmp
->pixel_width
+ metrics
.lbearing
;
1660 if (cmp
->rbearing
< cmp
->pixel_width
+ metrics
.rbearing
)
1661 cmp
->rbearing
= cmp
->pixel_width
+ metrics
.rbearing
;
1662 if (cmp
->ascent
< metrics
.ascent
)
1663 cmp
->ascent
= metrics
.ascent
;
1664 if (cmp
->descent
< metrics
.descent
)
1665 cmp
->descent
= metrics
.descent
;
1666 cmp
->pixel_width
+= metrics
.width
+ XINT (LGLYPH_WADJUST (g
));
1668 LGSTRING_SET_LBEARING (gstring
, make_number (cmp
->lbearing
));
1669 LGSTRING_SET_RBEARING (gstring
, make_number (cmp
->rbearing
));
1670 LGSTRING_SET_WIDTH (gstring
, make_number (cmp
->pixel_width
));
1671 LGSTRING_SET_ASCENT (gstring
, make_number (cmp
->ascent
));
1672 LGSTRING_SET_DESCENT (gstring
, make_number (cmp
->descent
));
1678 font_gstring_produce (old
, from
, to
, new, idx
, code
, n
)
1686 Lisp_Object min_idx
, max_idx
;
1689 if (idx
+ n
> ASIZE (new))
1695 min_idx
= make_number (0);
1696 max_idx
= make_number (1);
1700 min_idx
= AREF (AREF (old
, from
- 1), 0);
1701 max_idx
= AREF (AREF (old
, from
- 1), 1);
1704 else if (from
+ 1 == to
)
1706 min_idx
= AREF (AREF (old
, from
), 0);
1707 max_idx
= AREF (AREF (old
, from
), 1);
1711 int min_idx_i
= XINT (AREF (AREF (old
, from
), 0));
1712 int max_idx_i
= XINT (AREF (AREF (old
, from
), 1));
1714 for (i
= from
+ 1; i
< to
; i
++)
1716 if (min_idx_i
> XINT (AREF (AREF (old
, i
), 0)))
1717 min_idx_i
= XINT (AREF (AREF (old
, i
), 0));
1718 if (max_idx_i
< XINT (AREF (AREF (old
, i
), 1)))
1719 max_idx_i
= XINT (AREF (AREF (old
, i
), 1));
1721 min_idx
= make_number (min_idx_i
);
1722 max_idx
= make_number (max_idx_i
);
1725 for (i
= 0; i
< n
; i
++)
1727 ASET (AREF (new, idx
+ i
), 0, min_idx
);
1728 ASET (AREF (new, idx
+ i
), 1, max_idx
);
1729 ASET (AREF (new, idx
+ i
), 2, make_number (code
[i
]));
1737 static unsigned font_score
P_ ((Lisp_Object
, Lisp_Object
));
1738 static int font_compare
P_ ((const void *, const void *));
1739 static Lisp_Object font_sort_entites
P_ ((Lisp_Object
, Lisp_Object
,
1740 Lisp_Object
, Lisp_Object
));
1742 /* We sort fonts by scoring each of them against a specified
1743 font-spec. The score value is 32 bit (`unsigned'), and the smaller
1744 the value is, the closer the font is to the font-spec.
1746 Each 1-bit in the highest 4 bits of the score is used for atomic
1747 properties FOUNDRY, FAMILY, ADSTYLE, and REGISTRY.
1749 Each 7-bit in the lowest 28 bits are used for numeric properties
1750 WEIGHT, SLANT, WIDTH, and SIZE. */
1752 /* How many bits to shift to store the difference value of each font
1753 property in a score. */
1754 static int sort_shift_bits
[FONT_SIZE_INDEX
+ 1];
1756 /* Score font-entity ENTITY against font-spec SPEC. The return value
1757 indicates how different ENTITY is compared with SPEC. */
1760 font_score (entity
, spec
)
1761 Lisp_Object entity
, spec
;
1765 /* Score atomic fields. Maximum difference is 1. */
1766 for (i
= FONT_FOUNDRY_INDEX
; i
<= FONT_REGISTRY_INDEX
; i
++)
1768 Lisp_Object val
= AREF (spec
, i
);
1771 && ! EQ (val
, AREF (entity
, i
)))
1772 score
|= 1 << sort_shift_bits
[i
];
1775 /* Score numeric fields. Maximum difference is 127. */
1776 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1778 Lisp_Object spec_val
= AREF (spec
, i
);
1779 Lisp_Object entity_val
= AREF (entity
, i
);
1781 if (! NILP (spec_val
) && ! EQ (spec_val
, entity_val
))
1783 if (! INTEGERP (entity_val
))
1784 score
|= 127 << sort_shift_bits
[i
];
1785 else if (i
< FONT_SIZE_INDEX
1786 || XINT (entity_val
) != 0)
1788 int diff
= XINT (entity_val
) - XINT (spec_val
);
1792 score
|= min (diff
, 127) << sort_shift_bits
[i
];
1801 /* The comparison function for qsort. */
1804 font_compare (d1
, d2
)
1805 const void *d1
, *d2
;
1807 return (*(unsigned *) d1
< *(unsigned *) d2
1808 ? -1 : *(unsigned *) d1
> *(unsigned *) d2
);
1812 /* The structure for elements being sorted by qsort. */
1813 struct font_sort_data
1820 /* Sort font-entities in vector VEC by closeness to font-spec PREFER.
1821 If PREFER specifies a point-size, calculate the corresponding
1822 pixel-size from the Y-resolution of FRAME before sorting. If SPEC
1823 is not nil, it is a font-spec to get the font-entities in VEC. */
1826 font_sort_entites (vec
, prefer
, frame
, spec
)
1827 Lisp_Object vec
, prefer
, frame
, spec
;
1831 struct font_sort_data
*data
;
1832 int prefer_is_copy
= 0;
1839 size
= AREF (spec
, FONT_SIZE_INDEX
);
1842 double point_size
= XFLOAT_DATA (size
) * 10;
1843 int pixel_size
= POINT_TO_PIXEL (point_size
, XFRAME (frame
)->resy
);
1845 prefer
= Fcopy_sequence (prefer
);
1846 ASET (prefer
, FONT_SIZE_INDEX
, make_number (pixel_size
));
1852 /* As it is assured that all fonts in VEC match with SPEC, we
1853 should ignore properties specified in SPEC. So, set the
1854 corresponding properties in PREFER nil. */
1855 for (i
= FONT_WEIGHT_INDEX
; i
<= FONT_SIZE_INDEX
; i
++)
1856 if (! NILP (AREF (spec
, i
)) && ! NILP (AREF (prefer
, i
)))
1858 if (i
<= FONT_SIZE_INDEX
)
1860 if (! prefer_is_copy
)
1861 prefer
= Fcopy_sequence (prefer
);
1862 for (; i
<= FONT_SIZE_INDEX
; i
++)
1863 if (! NILP (AREF (spec
, i
)) && ! NILP (AREF (prefer
, i
)))
1864 ASET (prefer
, i
, Qnil
);
1868 /* Scoring and sorting. */
1869 SAFE_ALLOCA (data
, struct font_sort_data
*, (sizeof *data
) * len
);
1870 for (i
= 0; i
< len
; i
++)
1872 data
[i
].entity
= AREF (vec
, i
);
1873 data
[i
].score
= font_score (data
[i
].entity
, prefer
);
1875 qsort (data
, len
, sizeof *data
, font_compare
);
1876 for (i
= 0; i
< len
; i
++)
1877 ASET (vec
, i
, data
[i
].entity
);
1884 /* API of Font Service Layer. */
1887 font_update_sort_order (order
)
1890 int i
, shift_bits
= 21;
1892 for (i
= 0; i
< 4; i
++, shift_bits
-= 7)
1894 int xlfd_idx
= order
[i
];
1896 if (xlfd_idx
== XLFD_WEIGHT_INDEX
)
1897 sort_shift_bits
[FONT_WEIGHT_INDEX
] = shift_bits
;
1898 else if (xlfd_idx
== XLFD_SLANT_INDEX
)
1899 sort_shift_bits
[FONT_SLANT_INDEX
] = shift_bits
;
1900 else if (xlfd_idx
== XLFD_SWIDTH_INDEX
)
1901 sort_shift_bits
[FONT_WIDTH_INDEX
] = shift_bits
;
1903 sort_shift_bits
[FONT_SIZE_INDEX
] = shift_bits
;
1908 font_symbolic_weight (font
)
1911 Lisp_Object weight
= AREF (font
, FONT_WEIGHT_INDEX
);
1913 if (INTEGERP (weight
))
1914 weight
= prop_numeric_to_name (FONT_WEIGHT_INDEX
, XINT (weight
));
1919 font_symbolic_slant (font
)
1922 Lisp_Object slant
= AREF (font
, FONT_SLANT_INDEX
);
1924 if (INTEGERP (slant
))
1925 slant
= prop_numeric_to_name (FONT_SLANT_INDEX
, XINT (slant
));
1930 font_symbolic_width (font
)
1933 Lisp_Object width
= AREF (font
, FONT_WIDTH_INDEX
);
1935 if (INTEGERP (width
))
1936 width
= prop_numeric_to_name (FONT_WIDTH_INDEX
, XINT (width
));
1941 font_match_p (spec
, entity
)
1942 Lisp_Object spec
, entity
;
1946 for (i
= FONT_FOUNDRY_INDEX
; i
< FONT_SIZE_INDEX
; i
++)
1947 if (! NILP (AREF (spec
, i
))
1948 && ! EQ (AREF (spec
, i
), AREF (entity
, i
)))
1950 if (INTEGERP (AREF (spec
, FONT_SIZE_INDEX
))
1951 && XINT (AREF (entity
, FONT_SIZE_INDEX
)) > 0
1952 && (XINT (AREF (spec
, FONT_SIZE_INDEX
))
1953 != XINT (AREF (entity
, FONT_SIZE_INDEX
))))
1959 font_find_object (font
)
1962 Lisp_Object tail
, elt
;
1964 for (tail
= AREF (font
->entity
, FONT_OBJLIST_INDEX
); CONSP (tail
);
1968 if (font
== XSAVE_VALUE (elt
)->pointer
1969 && XSAVE_VALUE (elt
)->integer
> 0)
1976 static Lisp_Object scratch_font_spec
, scratch_font_prefer
;
1978 /* Return a vector of font-entities matching with SPEC on frame F. */
1981 font_list_entities (frame
, spec
)
1982 Lisp_Object frame
, spec
;
1984 FRAME_PTR f
= XFRAME (frame
);
1985 struct font_driver_list
*driver_list
= f
->font_driver_list
;
1986 Lisp_Object ftype
, family
, size
, alternate_familes
;
1987 Lisp_Object
*vec
= alloca (sizeof (Lisp_Object
) * num_font_drivers
);
1993 family
= AREF (spec
, FONT_FAMILY_INDEX
);
1995 alternate_familes
= Qnil
;
1998 if (NILP (font_family_alist
)
1999 && !NILP (Vface_alternative_font_family_alist
))
2000 build_font_family_alist ();
2001 alternate_familes
= assq_no_quit (family
, font_family_alist
);
2002 if (! NILP (alternate_familes
))
2003 alternate_familes
= XCDR (alternate_familes
);
2005 size
= AREF (spec
, FONT_SIZE_INDEX
);
2007 ASET (spec
, FONT_SIZE_INDEX
, POINT_TO_PIXEL (size
* 10, f
->resy
));
2009 xassert (ASIZE (spec
) == FONT_SPEC_MAX
);
2010 ftype
= AREF (spec
, FONT_TYPE_INDEX
);
2012 for (i
= 0; driver_list
; driver_list
= driver_list
->next
)
2013 if (NILP (ftype
) || EQ (driver_list
->driver
->type
, ftype
))
2015 Lisp_Object cache
= driver_list
->driver
->get_cache (frame
);
2016 Lisp_Object tail
= alternate_familes
;
2019 xassert (CONSP (cache
));
2020 ASET (spec
, FONT_TYPE_INDEX
, driver_list
->driver
->type
);
2021 ASET (spec
, FONT_FAMILY_INDEX
, family
);
2025 val
= assoc_no_quit (spec
, XCDR (cache
));
2030 val
= driver_list
->driver
->list (frame
, spec
);
2032 XSETCDR (cache
, Fcons (Fcons (Fcopy_sequence (spec
), val
),
2035 if (VECTORP (val
) && ASIZE (val
) > 0)
2042 ASET (spec
, FONT_FAMILY_INDEX
, XCAR (tail
));
2046 ASET (spec
, FONT_TYPE_INDEX
, ftype
);
2047 ASET (spec
, FONT_FAMILY_INDEX
, family
);
2048 ASET (spec
, FONT_SIZE_INDEX
, size
);
2049 return (i
> 0 ? Fvconcat (i
, vec
) : null_vector
);
2052 static int num_fonts
;
2055 font_open_entity (f
, entity
, pixel_size
)
2060 struct font_driver_list
*driver_list
;
2061 Lisp_Object objlist
, size
, val
;
2064 size
= AREF (entity
, FONT_SIZE_INDEX
);
2065 xassert (NATNUMP (size
));
2066 if (XINT (size
) != 0)
2067 pixel_size
= XINT (size
);
2069 for (objlist
= AREF (entity
, FONT_OBJLIST_INDEX
); CONSP (objlist
);
2070 objlist
= XCDR (objlist
))
2072 font
= XSAVE_VALUE (XCAR (objlist
))->pointer
;
2073 if (font
->pixel_size
== pixel_size
)
2075 XSAVE_VALUE (XCAR (objlist
))->integer
++;
2076 return XCAR (objlist
);
2080 xassert (FONT_ENTITY_P (entity
));
2081 val
= AREF (entity
, FONT_TYPE_INDEX
);
2082 for (driver_list
= f
->font_driver_list
;
2083 driver_list
&& ! EQ (driver_list
->driver
->type
, val
);
2084 driver_list
= driver_list
->next
);
2088 font
= driver_list
->driver
->open (f
, entity
, pixel_size
);
2091 val
= make_save_value (font
, 1);
2092 ASET (entity
, FONT_OBJLIST_INDEX
,
2093 Fcons (val
, AREF (entity
, FONT_OBJLIST_INDEX
)));
2099 font_close_object (f
, font_object
)
2101 Lisp_Object font_object
;
2104 Lisp_Object objlist
= AREF (font
->entity
, FONT_OBJLIST_INDEX
);
2105 Lisp_Object tail
, prev
= Qnil
;
2107 for (prev
= Qnil
, tail
= objlist
; CONSP (tail
);
2108 prev
= tail
, tail
= XCDR (tail
))
2109 if (EQ (font_object
, XCAR (tail
)))
2111 struct Lisp_Save_Value
*p
= XSAVE_VALUE (font_object
);
2113 xassert (p
->integer
> 0);
2115 if (p
->integer
== 0)
2117 if (font
->driver
->close
)
2118 font
->driver
->close (f
, p
->pointer
);
2121 ASET (font
->entity
, FONT_OBJLIST_INDEX
, XCDR (objlist
));
2123 XSETCDR (prev
, XCDR (objlist
));
2130 font_has_char (f
, font_entity
, c
)
2132 Lisp_Object font_entity
;
2135 Lisp_Object type
= AREF (font_entity
, FONT_TYPE_INDEX
);
2136 struct font_driver_list
*driver_list
;
2138 for (driver_list
= f
->font_driver_list
;
2139 driver_list
&& ! EQ (driver_list
->driver
->type
, type
);
2140 driver_list
= driver_list
->next
);
2143 return driver_list
->driver
->has_char (font_entity
, c
);
2147 font_encode_char (font_object
, c
)
2148 Lisp_Object font_object
;
2151 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
2153 return font
->driver
->encode_char (font
, c
);
2157 font_get_name (font_object
)
2158 Lisp_Object font_object
;
2160 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
2161 char *name
= (font
->font
.full_name
? font
->font
.full_name
2162 : font
->font
.name
? font
->font
.name
2165 return (name
? make_unibyte_string (name
, strlen (name
)) : null_string
);
2169 font_get_spec (font_object
)
2170 Lisp_Object font_object
;
2172 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
2173 Lisp_Object spec
= Ffont_spec (0, NULL
);
2176 for (i
= 0; i
< FONT_SIZE_INDEX
; i
++)
2177 ASET (spec
, i
, AREF (font
->entity
, i
));
2178 ASET (spec
, FONT_SIZE_INDEX
, make_number (font
->pixel_size
));
2183 font_get_frame (font
)
2186 if (FONT_OBJECT_P (font
))
2187 font
= ((struct font
*) XSAVE_VALUE (font
)->pointer
)->entity
;
2188 xassert (FONT_ENTITY_P (font
));
2189 return AREF (font
, FONT_FRAME_INDEX
);
2192 /* Find a font entity best matching with LFACE. If SPEC is non-nil,
2193 the font must exactly match with it. */
2196 font_find_for_lface (f
, lface
, spec
)
2201 Lisp_Object frame
, entities
;
2205 for (i
= 0; i
< FONT_SPEC_MAX
; i
++)
2206 ASET (scratch_font_spec
, i
, Qnil
);
2208 for (i
= 0; i
< FONT_SPEC_MAX
; i
++)
2209 ASET (scratch_font_spec
, i
, AREF (spec
, i
));
2211 if (NILP (AREF (scratch_font_spec
, FONT_FAMILY_INDEX
))
2212 && ! NILP (lface
[LFACE_FAMILY_INDEX
]))
2213 font_merge_old_spec (Qnil
, lface
[LFACE_FAMILY_INDEX
], Qnil
,
2215 if (NILP (AREF (scratch_font_spec
, FONT_REGISTRY_INDEX
)))
2216 ASET (scratch_font_spec
, FONT_REGISTRY_INDEX
, intern ("iso8859-1"));
2218 XSETFRAME (frame
, f
);
2219 entities
= font_list_entities (frame
, scratch_font_spec
);
2220 while (ASIZE (entities
) == 0)
2222 if (! NILP (AREF (scratch_font_spec
, FONT_FOUNDRY_INDEX
))
2223 && (NILP (spec
) || NILP (AREF (spec
, FONT_FOUNDRY_INDEX
))))
2225 ASET (scratch_font_spec
, FONT_FOUNDRY_INDEX
, Qnil
);
2226 entities
= font_list_entities (frame
, scratch_font_spec
);
2228 else if (! NILP (AREF (scratch_font_spec
, FONT_FAMILY_INDEX
))
2229 && (NILP (spec
) || NILP (AREF (spec
, FONT_FAMILY_INDEX
))))
2231 ASET (scratch_font_spec
, FONT_FAMILY_INDEX
, Qnil
);
2232 entities
= font_list_entities (frame
, scratch_font_spec
);
2238 if (ASIZE (entities
) > 1)
2240 Lisp_Object prefer
= scratch_font_prefer
, val
;
2243 ASET (prefer
, FONT_WEIGHT_INDEX
,
2244 font_prop_validate_style (FONT_WEIGHT_INDEX
,
2245 lface
[LFACE_WEIGHT_INDEX
]));
2246 ASET (prefer
, FONT_SLANT_INDEX
,
2247 font_prop_validate_style (FONT_SLANT_INDEX
,
2248 lface
[LFACE_SLANT_INDEX
]));
2249 ASET (prefer
, FONT_WIDTH_INDEX
,
2250 font_prop_validate_style (FONT_WIDTH_INDEX
,
2251 lface
[LFACE_SWIDTH_INDEX
]));
2252 val
= lface
[LFACE_HEIGHT_INDEX
];
2253 size
= POINT_TO_PIXEL (XINT (val
), f
->resy
);
2254 ASET (prefer
, FONT_SIZE_INDEX
, make_number (size
));
2256 font_sort_entites (entities
, prefer
, frame
, spec
);
2259 return AREF (entities
, 0);
2263 font_open_for_lface (f
, lface
, entity
)
2268 int pt
= XINT (lface
[LFACE_HEIGHT_INDEX
]);
2269 int size
= POINT_TO_PIXEL (pt
, f
->resy
);
2271 return font_open_entity (f
, entity
, size
);
2275 font_load_for_face (f
, face
)
2279 Lisp_Object font_object
= face
->lface
[LFACE_FONT_INDEX
];
2281 if (NILP (font_object
))
2283 Lisp_Object entity
= font_find_for_lface (f
, face
->lface
, Qnil
);
2285 if (! NILP (entity
))
2286 font_object
= font_open_for_lface (f
, face
->lface
, entity
);
2289 if (! NILP (font_object
))
2291 struct font
*font
= XSAVE_VALUE (font_object
)->pointer
;
2293 face
->font
= font
->font
.font
;
2294 face
->font_info
= (struct font_info
*) font
;
2295 face
->font_info_id
= 0;
2296 face
->font_name
= font
->font
.full_name
;
2301 face
->font_info
= NULL
;
2302 face
->font_info_id
= -1;
2303 face
->font_name
= NULL
;
2304 add_to_log ("Unable to load font for a face%s", null_string
, Qnil
);
2309 font_prepare_for_face (f
, face
)
2313 struct font
*font
= (struct font
*) face
->font_info
;
2315 if (font
->driver
->prepare_face
)
2316 font
->driver
->prepare_face (f
, face
);
2320 font_done_for_face (f
, face
)
2324 struct font
*font
= (struct font
*) face
->font_info
;
2326 if (font
->driver
->done_face
)
2327 font
->driver
->done_face (f
, face
);
2332 font_open_by_name (f
, name
)
2336 Lisp_Object args
[2];
2337 Lisp_Object spec
, prefer
, size
, entities
;
2339 struct font_driver_list
*dlist
;
2343 XSETFRAME (frame
, f
);
2346 args
[1] = make_unibyte_string (name
, strlen (name
));
2347 spec
= Ffont_spec (2, args
);
2348 prefer
= scratch_font_prefer
;
2349 for (i
= FONT_WEIGHT_INDEX
; i
< FONT_SIZE_INDEX
; i
++)
2350 if (NILP (AREF (spec
, i
)))
2351 ASET (prefer
, i
, make_number (100));
2352 size
= AREF (spec
, FONT_SIZE_INDEX
);
2355 else if (INTEGERP (size
))
2356 pixel_size
= XINT (size
);
2357 else /* FLOATP (size) */
2359 double pt
= XFLOAT_DATA (size
) * 10;
2361 pixel_size
= POINT_TO_PIXEL (pt
, f
->resy
);
2362 size
= make_number (pixel_size
);
2363 ASET (spec
, FONT_SIZE_INDEX
, size
);
2365 if (pixel_size
== 0)
2367 pixel_size
= POINT_TO_PIXEL (120.0, f
->resy
);
2368 size
= make_number (pixel_size
);
2370 ASET (prefer
, FONT_SIZE_INDEX
, size
);
2372 entities
= Flist_fonts (spec
, frame
, make_number (1), prefer
);
2373 return (NILP (entities
)
2375 : font_open_entity (f
, XCAR (entities
), pixel_size
));
2379 /* Register font-driver DRIVER. This function is used in two ways.
2381 The first is with frame F non-NULL. In this case, DRIVER is
2382 registered to be used for drawing characters on F. All frame
2383 creaters (e.g. Fx_create_frame) must call this function at least
2384 once with an available font-driver.
2386 The second is with frame F NULL. In this case, DRIVER is globally
2387 registered in the variable `font_driver_list'. All font-driver
2388 implementations must call this function in its syms_of_XXXX
2389 (e.g. syms_of_xfont). */
2392 register_font_driver (driver
, f
)
2393 struct font_driver
*driver
;
2396 struct font_driver_list
*root
= f
? f
->font_driver_list
: font_driver_list
;
2397 struct font_driver_list
*prev
, *list
;
2399 if (f
&& ! driver
->draw
)
2400 error ("Unsable font driver for a frame: %s",
2401 SDATA (SYMBOL_NAME (driver
->type
)));
2403 for (prev
= NULL
, list
= root
; list
; prev
= list
, list
= list
->next
)
2404 if (list
->driver
->type
== driver
->type
)
2405 error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver
->type
)));
2407 list
= malloc (sizeof (struct font_driver_list
));
2408 list
->driver
= driver
;
2413 f
->font_driver_list
= list
;
2415 font_driver_list
= list
;
2419 /* Free font-driver list on frame F. It doesn't free font-drivers
2423 free_font_driver_list (f
)
2426 while (f
->font_driver_list
)
2428 struct font_driver_list
*next
= f
->font_driver_list
->next
;
2430 free (f
->font_driver_list
);
2431 f
->font_driver_list
= next
;
2438 DEFUN ("fontp", Ffontp
, Sfontp
, 1, 1, 0,
2439 doc
: /* Return t if object is a font-spec or font-entity. */)
2443 return (FONTP (object
) ? Qt
: Qnil
);
2446 DEFUN ("font-spec", Ffont_spec
, Sfont_spec
, 0, MANY
, 0,
2447 doc
: /* Return a newly created font-spec with specified arguments as properties.
2448 usage: (font-spec &rest properties) */)
2453 Lisp_Object spec
= Fmake_vector (make_number (FONT_SPEC_MAX
), Qnil
);
2454 Lisp_Object extra
= Qnil
;
2457 for (i
= 0; i
< nargs
; i
+= 2)
2459 enum font_property_index prop
;
2460 Lisp_Object key
= args
[i
], val
= args
[i
+ 1];
2462 prop
= check_font_prop_name (key
);
2463 if (prop
< FONT_EXTRA_INDEX
)
2464 ASET (spec
, prop
, (font_property_table
[prop
].validater
) (prop
, val
));
2467 if (EQ (key
, QCname
))
2468 font_parse_name ((char *) SDATA (val
), spec
, 0);
2469 extra
= Fcons (Fcons (key
, val
), extra
);
2472 ASET (spec
, FONT_EXTRA_INDEX
, extra
);
2477 DEFUN ("font-get", Ffont_get
, Sfont_get
, 2, 2, 0,
2478 doc
: /* Return the value of FONT's PROP property.
2479 FONT may be a font-spec or font-entity.
2480 If FONT is font-entity and PROP is :extra, always nil is returned. */)
2482 Lisp_Object font
, prop
;
2484 enum font_property_index idx
;
2487 idx
= check_font_prop_name (prop
);
2488 if (idx
< FONT_EXTRA_INDEX
)
2489 return AREF (font
, idx
);
2490 if (FONT_ENTITY_P (font
))
2492 return Fcdr (Fassoc (AREF (font
, FONT_EXTRA_INDEX
), prop
));
2496 DEFUN ("font-put", Ffont_put
, Sfont_put
, 3, 3, 0,
2497 doc
: /* Set one property of FONT-SPEC: give property PROP value VALUE. */)
2498 (font_spec
, prop
, val
)
2499 Lisp_Object font_spec
, prop
, val
;
2501 enum font_property_index idx
;
2502 Lisp_Object extra
, slot
;
2504 CHECK_FONT_SPEC (font_spec
);
2505 idx
= check_font_prop_name (prop
);
2506 if (idx
< FONT_EXTRA_INDEX
)
2507 return ASET (font_spec
, idx
, val
);
2508 extra
= AREF (font_spec
, FONT_EXTRA_INDEX
);
2509 slot
= Fassoc (extra
, prop
);
2511 extra
= Fcons (Fcons (prop
, val
), extra
);
2513 Fsetcdr (slot
, val
);
2517 DEFUN ("list-fonts", Flist_fonts
, Slist_fonts
, 1, 4, 0,
2518 doc
: /* List available fonts matching FONT-SPEC on the current frame.
2519 Optional 2nd argument FRAME specifies the target frame.
2520 Optional 3rd argument NUM, if non-nil, limits the number of returned fonts.
2521 Optional 4th argument PREFER, if non-nil, is a font-spec to sort fonts
2522 by closeness to PREFER. */)
2523 (font_spec
, frame
, num
, prefer
)
2524 Lisp_Object font_spec
, frame
, num
, prefer
;
2526 Lisp_Object vec
, list
, tail
;
2530 frame
= selected_frame
;
2531 CHECK_LIVE_FRAME (frame
);
2532 CHECK_VALIDATE_FONT_SPEC (font_spec
);
2540 if (! NILP (prefer
))
2541 CHECK_FONT (prefer
);
2543 vec
= font_list_entities (frame
, font_spec
);
2548 return Fcons (AREF (vec
, 0), Qnil
);
2550 if (! NILP (prefer
))
2551 vec
= font_sort_entites (vec
, prefer
, frame
, font_spec
);
2553 list
= tail
= Fcons (AREF (vec
, 0), Qnil
);
2554 if (n
== 0 || n
> len
)
2556 for (i
= 1; i
< n
; i
++)
2558 Lisp_Object val
= Fcons (AREF (vec
, i
), Qnil
);
2560 XSETCDR (tail
, val
);
2566 DEFUN ("list-families", Flist_families
, Slist_families
, 0, 1, 0,
2567 doc
: /* List available font families on the current frame.
2568 Optional 2nd argument FRAME specifies the target frame. */)
2573 struct font_driver_list
*driver_list
;
2577 frame
= selected_frame
;
2578 CHECK_LIVE_FRAME (frame
);
2581 for (driver_list
= f
->font_driver_list
; driver_list
;
2582 driver_list
= driver_list
->next
)
2583 if (driver_list
->driver
->list_family
)
2585 Lisp_Object val
= driver_list
->driver
->list_family (frame
);
2591 Lisp_Object tail
= list
;
2593 for (; CONSP (val
); val
= XCDR (val
))
2594 if (NILP (Fmemq (XCAR (val
), tail
)))
2595 list
= Fcons (XCAR (val
), list
);
2601 DEFUN ("find-font", Ffind_font
, Sfind_font
, 1, 2, 0,
2602 doc
: /* Return a font-entity matching with FONT-SPEC on the current frame.
2603 Optional 2nd argument FRAME, if non-nil, specifies the target frame. */)
2605 Lisp_Object font_spec
, frame
;
2607 Lisp_Object val
= Flist_fonts (font_spec
, frame
, make_number (1), Qnil
);
2614 DEFUN ("font-xlfd-name", Ffont_xlfd_name
, Sfont_xlfd_name
, 1, 1, 0,
2615 doc
: /* Return XLFD name of FONT.
2616 FONT is a font-spec, font-entity, or font-object.
2617 If the name is too long for XLFD (maximum 255 chars), return nil. */)
2624 if (FONT_SPEC_P (font
))
2625 CHECK_VALIDATE_FONT_SPEC (font
);
2626 else if (FONT_ENTITY_P (font
))
2632 CHECK_FONT_GET_OBJECT (font
, fontp
);
2633 font
= fontp
->entity
;
2634 pixel_size
= fontp
->pixel_size
;
2637 if (font_unparse_xlfd (font
, pixel_size
, name
, 256) < 0)
2639 return build_string (name
);
2642 DEFUN ("clear-font-cache", Fclear_font_cache
, Sclear_font_cache
, 0, 0, 0,
2643 doc
: /* Clear font cache. */)
2646 Lisp_Object list
, frame
;
2648 FOR_EACH_FRAME (list
, frame
)
2650 FRAME_PTR f
= XFRAME (frame
);
2651 struct font_driver_list
*driver_list
= f
->font_driver_list
;
2653 for (; driver_list
; driver_list
= driver_list
->next
)
2655 Lisp_Object cache
= driver_list
->driver
->get_cache (frame
);
2656 Lisp_Object tail
, elt
;
2658 for (tail
= XCDR (cache
); CONSP (tail
); tail
= XCDR (tail
))
2661 if (CONSP (elt
) && FONT_SPEC_P (XCAR (elt
)))
2663 Lisp_Object vec
= XCDR (elt
);
2666 for (i
= 0; i
< ASIZE (vec
); i
++)
2668 Lisp_Object entity
= AREF (vec
, i
);
2669 Lisp_Object objlist
= AREF (entity
, FONT_OBJLIST_INDEX
);
2671 for (; CONSP (objlist
); objlist
= XCDR (objlist
))
2673 Lisp_Object val
= XCAR (objlist
);
2674 struct Lisp_Save_Value
*p
= XSAVE_VALUE (val
);
2675 struct font
*font
= p
->pointer
;
2678 && driver_list
->driver
== font
->driver
);
2679 driver_list
->driver
->close (f
, font
);
2683 if (driver_list
->driver
->free_entity
)
2684 driver_list
->driver
->free_entity (entity
);
2688 XSETCDR (cache
, Qnil
);
2695 DEFUN ("internal-set-font-style-table", Finternal_set_font_style_table
,
2696 Sinternal_set_font_style_table
, 2, 2, 0,
2697 doc
: /* Set font style table for PROP to TABLE.
2698 PROP must be `:weight', `:slant', or `:width'.
2699 TABLE must be an alist of symbols vs the corresponding numeric values
2700 sorted by numeric values. */)
2702 Lisp_Object prop
, table
;
2706 Lisp_Object tail
, val
;
2708 CHECK_SYMBOL (prop
);
2709 table_index
= (EQ (prop
, QCweight
) ? 0
2710 : EQ (prop
, QCslant
) ? 1
2711 : EQ (prop
, QCwidth
) ? 2
2713 if (table_index
>= ASIZE (font_style_table
))
2714 error ("Invalid font style property: %s", SDATA (SYMBOL_NAME (prop
)));
2715 table
= Fcopy_sequence (table
);
2717 for (tail
= table
; ! NILP (tail
); tail
= Fcdr (tail
))
2719 prop
= Fcar (Fcar (tail
));
2720 val
= Fcdr (Fcar (tail
));
2721 CHECK_SYMBOL (prop
);
2723 if (numeric
> XINT (val
))
2724 error ("Numeric values not sorted for %s", SDATA (SYMBOL_NAME (prop
)));
2725 numeric
= XINT (val
);
2726 XSETCAR (tail
, Fcons (prop
, val
));
2728 ASET (font_style_table
, table_index
, table
);
2732 DEFUN ("font-make-gstring", Ffont_make_gstring
, Sfont_make_gstring
, 2, 2, 0,
2733 doc
: /* Return a newly created glyph-string for FONT-OBJECT with NUM glyphs.
2734 FONT-OBJECT may be nil if it is not yet known. */)
2736 Lisp_Object font_object
, num
;
2738 Lisp_Object gstring
, g
;
2742 if (! NILP (font_object
))
2743 CHECK_FONT_OBJECT (font_object
);
2746 len
= XINT (num
) + 1;
2747 gstring
= Fmake_vector (make_number (len
), Qnil
);
2748 g
= Fmake_vector (make_number (6), Qnil
);
2749 ASET (g
, 0, font_object
);
2750 ASET (gstring
, 0, g
);
2751 for (i
= 1; i
< len
; i
++)
2752 ASET (gstring
, i
, Fmake_vector (make_number (8), make_number (0)));
2756 DEFUN ("font-fill-gstring", Ffont_fill_gstring
, Sfont_fill_gstring
, 4, 5, 0,
2757 doc
: /* Fillin glyph-string GSTRING by characters for FONT-OBJECT.
2758 START and END specifies the region to extract characters.
2759 If optional 3rd argument OBJECT is non-nil, it is a buffer or a string from
2760 where to extract characters.
2761 FONT-OBJECT may be nil if GSTRING already already contains one. */)
2762 (gstring
, font_object
, start
, end
, object
)
2763 Lisp_Object gstring
, font_object
, start
, end
, object
;
2769 CHECK_VECTOR (gstring
);
2770 if (NILP (font_object
))
2771 font_object
= Faref (Faref (gstring
, make_number (0)), make_number (0));
2772 CHECK_FONT_GET_OBJECT (font_object
, font
);
2774 if (STRINGP (object
))
2776 const unsigned char *p
;
2778 CHECK_NATNUM (start
);
2780 if (XINT (start
) > XINT (end
)
2781 || XINT (end
) > ASIZE (object
)
2782 || XINT (end
) - XINT (start
) >= XINT (Flength (gstring
)))
2783 args_out_of_range (start
, end
);
2785 len
= XINT (end
) - XINT (start
);
2786 p
= SDATA (object
) + string_char_to_byte (object
, XINT (start
));
2787 for (i
= 0; i
< len
; i
++)
2789 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
2791 c
= STRING_CHAR_ADVANCE (p
);
2792 code
= font
->driver
->encode_char (font
, c
);
2793 if (code
> MOST_POSITIVE_FIXNUM
)
2794 error ("Glyph code 0x%X is too large", code
);
2795 ASET (g
, 0, make_number (i
));
2796 ASET (g
, 1, make_number (i
+ 1));
2797 LGLYPH_SET_CHAR (g
, make_number (c
));
2798 LGLYPH_SET_CODE (g
, make_number (code
));
2805 if (! NILP (object
))
2806 Fset_buffer (object
);
2807 validate_region (&start
, &end
);
2808 if (XINT (end
) - XINT (start
) > len
)
2809 args_out_of_range (start
, end
);
2810 len
= XINT (end
) - XINT (start
);
2812 pos_byte
= CHAR_TO_BYTE (pos
);
2813 for (i
= 0; i
< len
; i
++)
2815 Lisp_Object g
= LGSTRING_GLYPH (gstring
, i
);
2817 FETCH_CHAR_ADVANCE (c
, pos
, pos_byte
);
2818 code
= font
->driver
->encode_char (font
, c
);
2819 if (code
> MOST_POSITIVE_FIXNUM
)
2820 error ("Glyph code 0x%X is too large", code
);
2821 ASET (g
, 0, make_number (i
));
2822 ASET (g
, 1, make_number (i
+ 1));
2823 LGLYPH_SET_CHAR (g
, make_number (c
));
2824 LGLYPH_SET_CODE (g
, make_number (code
));
2833 DEFUN ("open-font", Fopen_font
, Sopen_font
, 1, 3, 0,
2834 doc
: /* Open FONT-ENTITY. */)
2835 (font_entity
, size
, frame
)
2836 Lisp_Object font_entity
;
2842 CHECK_FONT_ENTITY (font_entity
);
2844 size
= AREF (font_entity
, FONT_SIZE_INDEX
);
2845 CHECK_NUMBER (size
);
2847 frame
= selected_frame
;
2848 CHECK_LIVE_FRAME (frame
);
2850 isize
= XINT (size
);
2852 isize
= POINT_TO_PIXEL (- isize
, XFRAME (frame
)->resy
);
2854 return font_open_entity (XFRAME (frame
), font_entity
, isize
);
2857 DEFUN ("close-font", Fclose_font
, Sclose_font
, 1, 2, 0,
2858 doc
: /* Close FONT-OBJECT. */)
2859 (font_object
, frame
)
2860 Lisp_Object font_object
, frame
;
2862 CHECK_FONT_OBJECT (font_object
);
2864 frame
= selected_frame
;
2865 CHECK_LIVE_FRAME (frame
);
2866 font_close_object (XFRAME (frame
), font_object
);
2870 DEFUN ("query-font", Fquery_font
, Squery_font
, 1, 1, 0,
2871 doc
: /* Return information about FONT-OBJECT. */)
2873 Lisp_Object font_object
;
2878 CHECK_FONT_GET_OBJECT (font_object
, font
);
2880 val
= Fmake_vector (make_number (9), Qnil
);
2881 ASET (val
, 0, Ffont_xlfd_name (font_object
));
2882 if (font
->file_name
)
2883 ASET (val
, 1, make_unibyte_string (font
->file_name
,
2884 strlen (font
->file_name
)));
2885 ASET (val
, 2, make_number (font
->pixel_size
));
2886 ASET (val
, 3, make_number (font
->font
.size
));
2887 ASET (val
, 4, make_number (font
->ascent
));
2888 ASET (val
, 5, make_number (font
->descent
));
2889 ASET (val
, 6, make_number (font
->font
.space_width
));
2890 ASET (val
, 7, make_number (font
->font
.average_width
));
2891 if (font
->driver
->otf_capability
)
2892 ASET (val
, 8, font
->driver
->otf_capability (font
));
2896 DEFUN ("get-font-glyphs", Fget_font_glyphs
, Sget_font_glyphs
, 2, 2, 0,
2897 doc
: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING.
2898 Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */)
2899 (font_object
, string
)
2900 Lisp_Object font_object
, string
;
2906 CHECK_FONT_GET_OBJECT (font_object
, font
);
2907 CHECK_STRING (string
);
2908 len
= SCHARS (string
);
2909 vec
= Fmake_vector (make_number (len
), Qnil
);
2910 for (i
= 0; i
< len
; i
++)
2912 Lisp_Object ch
= Faref (string
, make_number (i
));
2916 struct font_metrics metrics
;
2918 code
= font
->driver
->encode_char (font
, c
);
2919 if (code
== FONT_INVALID_CODE
)
2921 val
= Fmake_vector (make_number (6), Qnil
);
2922 if (code
<= MOST_POSITIVE_FIXNUM
)
2923 ASET (val
, 0, make_number (code
));
2925 ASET (val
, 0, Fcons (make_number (code
>> 16),
2926 make_number (code
& 0xFFFF)));
2927 font
->driver
->text_extents (font
, &code
, 1, &metrics
);
2928 ASET (val
, 1, make_number (metrics
.lbearing
));
2929 ASET (val
, 2, make_number (metrics
.rbearing
));
2930 ASET (val
, 3, make_number (metrics
.width
));
2931 ASET (val
, 4, make_number (metrics
.ascent
));
2932 ASET (val
, 5, make_number (metrics
.descent
));
2939 DEFUN ("draw-string", Fdraw_string
, Sdraw_string
, 2, 2, 0,
2940 doc
: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame.
2941 The value is a number of glyphs drawn.
2942 Type C-l to recover what previously shown. */)
2943 (font_object
, string
)
2944 Lisp_Object font_object
, string
;
2946 Lisp_Object frame
= selected_frame
;
2947 FRAME_PTR f
= XFRAME (frame
);
2953 CHECK_FONT_GET_OBJECT (font_object
, font
);
2954 CHECK_STRING (string
);
2955 len
= SCHARS (string
);
2956 code
= alloca (sizeof (unsigned) * len
);
2957 for (i
= 0; i
< len
; i
++)
2959 Lisp_Object ch
= Faref (string
, make_number (i
));
2963 code
[i
] = font
->driver
->encode_char (font
, c
);
2964 if (code
[i
] == FONT_INVALID_CODE
)
2967 face
= FACE_FROM_ID (f
, DEFAULT_FACE_ID
);
2969 if (font
->driver
->prepare_face
)
2970 font
->driver
->prepare_face (f
, face
);
2971 width
= font
->driver
->text_extents (font
, code
, i
, NULL
);
2972 len
= font
->driver
->draw_text (f
, face
, 0, font
->ascent
, code
, i
, width
);
2973 if (font
->driver
->done_face
)
2974 font
->driver
->done_face (f
, face
);
2976 return make_number (len
);
2980 #endif /* FONT_DEBUG */
2983 extern void syms_of_ftfont
P_ (());
2984 extern void syms_of_xfont
P_ (());
2985 extern void syms_of_xftfont
P_ (());
2986 extern void syms_of_ftxfont
P_ (());
2987 extern void syms_of_bdffont
P_ (());
2988 extern void syms_of_w32font
P_ (());
2989 extern void syms_of_atmfont
P_ (());
2994 sort_shift_bits
[FONT_SLANT_INDEX
] = 0;
2995 sort_shift_bits
[FONT_WEIGHT_INDEX
] = 7;
2996 sort_shift_bits
[FONT_SIZE_INDEX
] = 14;
2997 sort_shift_bits
[FONT_WIDTH_INDEX
] = 21;
2998 sort_shift_bits
[FONT_ADSTYLE_INDEX
] = 28;
2999 sort_shift_bits
[FONT_FOUNDRY_INDEX
] = 29;
3000 sort_shift_bits
[FONT_FAMILY_INDEX
] = 30;
3001 sort_shift_bits
[FONT_REGISTRY_INDEX
] = 31;
3002 /* Note that sort_shift_bits[FONT_SLANT_TYPE] is never used. */
3004 staticpro (&font_style_table
);
3005 font_style_table
= Fmake_vector (make_number (3), Qnil
);
3007 staticpro (&font_family_alist
);
3008 font_family_alist
= Qnil
;
3010 DEFSYM (Qfontp
, "fontp");
3012 DEFSYM (Qiso8859_1
, "iso8859-1");
3013 DEFSYM (Qiso10646_1
, "iso10646-1");
3014 DEFSYM (Qunicode_bmp
, "unicode-bmp");
3016 DEFSYM (QCotf
, ":otf");
3017 DEFSYM (QClanguage
, ":language");
3018 DEFSYM (QCscript
, ":script");
3020 DEFSYM (QCfoundry
, ":foundry");
3021 DEFSYM (QCadstyle
, ":adstyle");
3022 DEFSYM (QCregistry
, ":registry");
3023 DEFSYM (QCextra
, ":extra");
3025 staticpro (&null_string
);
3026 null_string
= build_string ("");
3027 staticpro (&null_vector
);
3028 null_vector
= Fmake_vector (make_number (0), Qnil
);
3030 staticpro (&scratch_font_spec
);
3031 scratch_font_spec
= Ffont_spec (0, NULL
);
3032 staticpro (&scratch_font_prefer
);
3033 scratch_font_prefer
= Ffont_spec (0, NULL
);
3036 defsubr (&Sfont_spec
);
3037 defsubr (&Sfont_get
);
3038 defsubr (&Sfont_put
);
3039 defsubr (&Slist_fonts
);
3040 defsubr (&Slist_families
);
3041 defsubr (&Sfind_font
);
3042 defsubr (&Sfont_xlfd_name
);
3043 defsubr (&Sclear_font_cache
);
3044 defsubr (&Sinternal_set_font_style_table
);
3045 defsubr (&Sfont_make_gstring
);
3046 defsubr (&Sfont_fill_gstring
);
3049 defsubr (&Sopen_font
);
3050 defsubr (&Sclose_font
);
3051 defsubr (&Squery_font
);
3052 defsubr (&Sget_font_glyphs
);
3054 defsubr (&Sdraw_string
);
3056 #endif /* FONT_DEBUG */
3058 #ifdef HAVE_FREETYPE
3060 #ifdef HAVE_X_WINDOWS
3065 #endif /* HAVE_XFT */
3066 #endif /* HAVE_X_WINDOWS */
3067 #else /* not HAVE_FREETYPE */
3068 #ifdef HAVE_X_WINDOWS
3070 #endif /* HAVE_X_WINDOWS */
3071 #endif /* not HAVE_FREETYPE */
3074 #endif /* HAVE_BDFFONT */
3077 #endif /* WINDOWSNT */
3083 /* arch-tag: 74c9475d-5976-4c93-a327-942ae3072846
3084 (do not change this comment) */