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(Qfont_spec, Qfont_entity, Qfont_object): Extern them.

Browse source 
(enum font_property_index): New members FONT_DPI_INDEX,
FONT_SPACING_INDEX, FONT_AVGWIDTH_INDEX, FONT_NAME_INDEX,
FONT_FULLNAME_INDEX, FONT_FILE_INDEX, FONT_FORMAT_INDEX,
FONT_OBJECT_MAX.  Delete FONT_FRAME_INDEX.
(FONT_WEIGHT_NUMERIC, FONT_SLANT_NUMERIC, FONT_WIDTH_NUMERIC)
(FONT_WEIGHT_SYMBOLIC, FONT_SLANT_SYMBOLIC, FONT_WIDTH_SYMBOLIC)
(FONT_WEIGHT_FOR_FACE, FONT_SLANT_FOR_FACE, FONT_WIDTH_FOR_FACE)
(FONT_WEIGHT_NAME_NUMERIC, FONT_SLANT_NAME_NUMERIC)
(FONT_WIDTH_NAME_NUMERIC, FONT_SET_STYLE): New macros.
(struct font_spec, struct font_entity): New structs.
(FONT_ENCODING_NOT_DECIDED): Moved from fontset.h.
(struct font): Many members from old "struct font_info" moved to
here.  Members font and entity deleted.
(FONT_SPEC_P, FONT_ENTITY_P, FONT_OBJECT_P, FONTP): Modified for
the new font-related objects.
(CHECK_FONT_SPEC, CHECK_FONT_ENTITY, CHECK_FONT_OBJECT)
(CHECK_FONT_GET_OBJECT): Likewise.
(XFONT_SPEC, XFONT_ENTITY, XFONT_OBJECT, XSETFONT): New macros.
(PT_PER_INCH, POINT_TO_PIXEL, PIXEL_TO_POINT): Moved from font.h.
(struct font_driver): New members case_sensitive anc check.  Type
of the member list and open changed.
(enable_font_backend, font_symbolic_weight, font_symbolic_slant)
(font_symbolic_width, font_find_object, font_get_spec)
(font_set_lface_from_name): Delete extern.
(Fcopy_font_spec, Fmerge_font_spec, Ffont_family_list): New
EXFUNs.
This commit is contained in:
Kenichi Handa 2008-05-14 01:25:20 +00:00
parent 5a51a1443a
commit 875003e5bc
1 changed files with 355 additions and 94 deletions
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449
src/font.h
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@ -30,31 +30,32 @@ Boston, MA 02110-1301, USA. */
FONT-SPEC
Vector (length FONT_SPEC_MAX) of font properties. Some
Pseudo vector (length FONT_SPEC_MAX) of font properties. Some
properties can be left unspecified (i.e. nil). Emacs asks
font-drivers to find a font by FONT-SPEC. A fontset entry
specifies requisite properties whereas a face specifies just
preferable properties. This object is fully modifiable by
Lisp.
preferable properties.
FONT-ENTITY
Vector (length FONT_ENTITY_MAX) of fully specified font
properties that a font-driver returns upon a request of
Pseudo vector (length FONT_ENTITY_MAX) of fully instanciated
font properties that a font-driver returns upon a request of
FONT-SPEC.
Note: Only the method `list' of a font-driver can create this
object, and should never be modified by Lisp. In that sense,
it may be cleaner to implement it as a Lisp object of a new
type (e.g. struct Lisp_Font).
Note: Only the method `list' and `match' of a font-driver can
create this object, and should never be modified by Lisp.
FONT-OBJECT
Lisp object of type Lisp_Misc_Save_Value encapsulating a
pointer to "struct font". This corresponds to an opened font.
Pseudo vector (length FONT_OBJECT_MAX) of a opend font.
Note: The note for FONT-ENTITY also applies to this.
*/
Lisp object encapsulating "struct font". This corresponds to
an opened font.
Note: Only the method `open' of a font-driver can create this
object, and should never be modified by Lisp. */
extern Lisp_Object Qfont_spec, Qfont_entity, Qfont_object;
struct font_driver;
@ -68,8 +69,8 @@ struct font;
enum font_property_index
{
/* FONT-TYPE is a symbol indicating a font backend; currently `x',
`xft', `ftx', `freetype' are available on X and gdi on Windows.
For Windows, we `bdf' and `uniscribe' backends are in progress.
`xft', `ftx' are available on X and gdi on Windows.
For Windows, `bdf' and `uniscribe' backends are in progress.
For Mac OS X, we need `atm'. */
FONT_TYPE_INDEX,
@ -83,34 +84,78 @@ enum font_property_index
FONT_ADSTYLE_INDEX,
/* FONT-REGISTRY is a combination of a charset-registry and
charset0encoding name (symbol). */
charset-encoding name (symbol). */
FONT_REGISTRY_INDEX,
/* FONT-WEIGHT is a numeric value of weight (e.g. medium, bold) of
the font. The value is what defined by FC_WEIGHT_* in
fontconfig. */
the font. The lowest 8-bit is an index determining the
symbolic name, and the higher bits is the actual numeric value
defined in `font-weight-table'. */
FONT_WEIGHT_INDEX,
/* FONT-SLANT is a numeric value of slant (e.g. r, i, o) of the
font. The value is what defined by FC_SLANT_* in
fontconfig plus 100. */
font. The lowest 8-bit is an index determining the symbolic
name, and the higher bits is the actual numeric value defined
in `font-slant-table'. */
FONT_SLANT_INDEX,
/* FONT-WIDTH is a numeric value of setwidth (e.g. normal,
condensed) of the font. The value is what defined by
FC_WIDTH_* in fontconfig. */
/* FONT-WIDTH is a numeric value of setwidth (e.g. normal) of the
font. The lowest 8-bit is an index determining the symbolic
name, and the higher bits is the actual numeric value defined
`font-width-table'. */
FONT_WIDTH_INDEX,
/* FONT-SIZE is a size of the font. If integer, it is a pixel
size. For a font-spec, the value can be float specifying a
point size. For a font-entity, the value can be zero meaning
that the font is scalable. */
point size. The value zero means that the font is
scalable. */
FONT_SIZE_INDEX,
/* FONT-DPI is a resolution (dot per inch) for which the font is
designed. */
FONT_DPI_INDEX,
/* FONT-SPACING is a spacing (mono, proportional, charcell) of the
font (integer; one of enum font_spacing). */
FONT_SPACING_INDEX,
/* FONT-AVGWIDTH is an average width (1/10 pixel unit) of the
font. */
FONT_AVGWIDTH_INDEX,
#if 0
/* The following two members are to substitute for the above 6
members (FONT_WEIGHT_INDEX to FONT_AVGWIDTH_INDEX excluding
FONT_SIZE_INDEX) if it is found that font-entities consumes too
much memory. */
/* FONT-STYLE is a 24-bit integer containing indices for
style-related properties WEIGHT, SLANT, and WIDTH. The lowest
8-bit is an indice to the weight table AREF (font_style_table,
0), the next 8-bit is an indice to the slant table AREF
(font_style_table, 1), the highest 8-bit is an indice to the
slant table AREF (font_style_table, 2). The indice 0 indicates
that the corresponding style is not specified. This way, we
can represent at most 255 different names for each style, which
is surely sufficient. */
FONT_STYLE_INDEX,
/* FONT-METRICS is a 27-bit integer containing metrics-related
properties DPI, AVGWIDTH, SPACING. The lowest 12-bit is for
DPI, the next 12-bit is for AVGWIDTH, the highest 3-bit is for
SPACING. In each bit field, the highest bit indicates that the
corresponding value is set or not. This way, we can represent
DPI by 11-bit (0 to 2047), AVGWIDTH by 11-bit (0 to 2047),
SPACING by 3-bit (0 for proportional, 1 for dual, 2 for mono, 3
for charcell), which is surely sufficient. */
FONT_METRICS_INDEX,
#endif
/* In a font-spec, the value is an alist of extra information of a
font such as name, OpenType features, and language coverage.
In a font-entity, the value is an extra infomation for
identifying a font (font-driver dependent). */
In addition, in a font-entity, the value may contain a pair
(font-entity . INFO) where INFO is an extra infomation to
identify a font (font-driver dependent). */
FONT_EXTRA_INDEX, /* alist alist */
/* This value is the length of font-spec vector. */
@ -118,49 +163,225 @@ enum font_property_index
/* The followings are used only for a font-entity. */
/* Frame on which the font is found. The value is nil if the font
can be opend on any frame. */
FONT_FRAME_INDEX = FONT_SPEC_MAX,
/* List of font-objects opened from the font-entity. The value is
nil if no font can be opened for this font-entity. */
FONT_OBJLIST_INDEX,
/* List of font-objects opened from the font-entity. */
FONT_OBJLIST_INDEX = FONT_SPEC_MAX,
/* This value is the length of font-entity vector. */
FONT_ENTITY_MAX
FONT_ENTITY_MAX,
/* XLFD name of the font (string). */
FONT_NAME_INDEX = FONT_ENTITY_MAX,
/* Full name of the font (string). It is the name extracted from
the opend font, and may be different from the above. It may be
nil if the opened font doesn't give a name. */
FONT_FULLNAME_INDEX,
/* File name of the font or nil if a file associated with the font
is not available. */
FONT_FILE_INDEX,
/* Format of the font (symbol). */
FONT_FORMAT_INDEX,
/* This value is the length of font-object vector. */
FONT_OBJECT_MAX
};
extern Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClanguage, QCscript;
/* Return the numeric weight value of FONT. */
#define FONT_WEIGHT_NUMERIC(font) \
(INTEGERP (AREF ((font), FONT_WEIGHT_INDEX)) \
? (XINT (AREF ((font), FONT_WEIGHT_INDEX)) >> 8) : -1)
/* Return the numeric slant value of FONT. */
#define FONT_SLANT_NUMERIC(font) \
(INTEGERP (AREF ((font), FONT_SLANT_INDEX)) \
? (XINT (AREF ((font), FONT_SLANT_INDEX)) >> 8) : -1)
/* Return the numeric width value of FONT. */
#define FONT_WIDTH_NUMERIC(font) \
(INTEGERP (AREF ((font), FONT_WIDTH_INDEX)) \
? (XINT (AREF ((font), FONT_WIDTH_INDEX)) >> 8) : -1)
/* Return the symbolic weight value of FONT. */
#define FONT_WEIGHT_SYMBOLIC(font) \
font_style_symbolic (font, FONT_WEIGHT_INDEX, 0)
/* Return the symbolic slant value of FONT. */
#define FONT_SLANT_SYMBOLIC(font) \
font_style_symbolic (font, FONT_SLANT_INDEX, 0)
/* Return the symbolic width value of FONT. */
#define FONT_WIDTH_SYMBOLIC(font) \
font_style_symbolic (font, FONT_WIDTH_INDEX, 0)
/* Return the face-weight corresponding to the weight of FONT. */
#define FONT_WEIGHT_FOR_FACE(font) \
font_style_symbolic (font, FONT_WEIGHT_INDEX, 1)
/* Return the face-slant corresponding to the slant of FONT. */
#define FONT_SLANT_FOR_FACE(font) \
font_style_symbolic (font, FONT_SLANT_INDEX, 1)
/* Return the face-swidth corresponding to the slant of FONT. */
#define FONT_WIDTH_FOR_FACE(font) \
font_style_symbolic (font, FONT_WIDTH_INDEX, 1)
/* Return the numeric weight value corresponding ot the symbol NAME. */
#define FONT_WEIGHT_NAME_NUMERIC(name) \
(font_style_to_value (FONT_WEIGHT_INDEX, (name), 0) >> 8)
/* Return the numeric slant value corresponding ot the symbol NAME. */
#define FONT_SLANT_NAME_NUMERIC(name) \
(font_style_to_value (FONT_SLANT_INDEX, (name), 0) >> 8)
/* Return the numeric width value corresponding ot the symbol NAME. */
#define FONT_WIDTH_NAME_NUMERIC(name) \
(font_style_to_value (FONT_WIDTH_INDEX, (name), 0) >> 8)
/* Set the font property PROP of FONT to VAL. PROP is one of
style-related font property index (FONT_WEIGHT/SLANT/WIDTH_INDEX).
VAL (integer or symbol) is the numeric or symbolic style value. */
#define FONT_SET_STYLE(font, prop, val) \
ASET ((font), prop, make_number (font_style_to_value (prop, val, 1)))
extern Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript;
extern Lisp_Object QCavgwidth, QCfont_entity, QCfc_unknown_spec;
/* Important character set symbols. */
extern Lisp_Object Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip;
extern Lisp_Object null_string;
extern Lisp_Object null_vector;
/* Structure for a font-spec. */
/* Structure for an opened font. We can safely cast this structure to
"struct font_info". */
struct font_spec
{
EMACS_UINT size;
struct Lisp_Vector *next;
Lisp_Object props[FONT_SPEC_MAX];
};
/* Structure for a font-entity. */
struct font_entity
{
EMACS_UINT size;
struct Lisp_Vector *next;
Lisp_Object props[FONT_ENTITY_MAX];
};
/* A value which may appear in the member `encoding' of struct font
indicating that a font itself doesn't tell which encoding to be
used. */
#define FONT_ENCODING_NOT_DECIDED 255
/* Structure for a font-object. */
struct font
{
struct font_info font;
EMACS_UINT size;
struct Lisp_Vector *next;
/* From which font-entity the font is opened. */
Lisp_Object entity;
/* All Lisp_Object components must come first.
That ensures they are all aligned normally. */
Lisp_Object props[FONT_OBJECT_MAX];
/* Beyond here, there should be no more Lisp_Object components. */
/* Maximum bound width over all existing characters of the font. On
X window, this is same as (font->max_bounds.width). */
int max_width;
/* By which pixel size the font is opened. */
int pixel_size;
/* Height of the font. On X window, this is the same as
(font->ascent + font->descent). */
int height;
/* Width of the space glyph of the font. If the font doesn't have a
SPACE glyph, the value is 0. */
int space_width;
/* Average width of glyphs in the font. If the font itself doesn't
have that information but has glyphs of ASCII character, the
value is the average with of those glyphs. Otherwise, the value
is 0. */
int average_width;
/* Minimum glyph width (in pixels). */
int min_width;
/* Ascent and descent of the font (in pixels). */
int ascent, descent;
/* Vertical pixel width of the underline. If is zero if that
information is not in the font. */
int underline_thickness;
/* Vertical pixel position (relative to the baseline) of the
underline. If it is positive, it is below the baseline. It is
negative if that information is not in the font. */
int underline_position;
/* 1 if `vertical-centering-font-regexp' matches this font name.
In this case, we render characters at vartical center positions
of lines. */
int vertical_centering;
/* Encoding type of the font. The value is one of
0, 1, 2, or 3:
0: code points 0x20..0x7F or 0x2020..0x7F7F are used
1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used
2: code points 0x20A0..0x7FFF are used
3: code points 0xA020..0xFF7F are used
If the member `font_encoder' is not NULL, this member is ignored. */
unsigned char encoding_type;
/* The baseline position of a font is normally `ascent' value of the
font. However, there exists many fonts which don't set `ascent'
an appropriate value to be used as baseline position. This is
typical in such ASCII fonts which are designed to be used with
Chinese, Japanese, Korean characters. When we use mixture of
such fonts and normal fonts (having correct `ascent' value), a
display line gets very ugly. Since we have no way to fix it
automatically, it is users responsibility to supply well designed
fonts or correct `ascent' value of fonts. But, the latter
requires heavy work (modifying all bitmap data in BDF files).
So, Emacs accepts a private font property
`_MULE_BASELINE_OFFSET'. If a font has this property, we
calculate the baseline position by subtracting the value from
`ascent'. In other words, the value indicates how many bits
higher we should draw a character of the font than normal ASCII
text for a better looking.
We also have to consider the fact that the concept of `baseline'
differs among scripts to which each character belongs. For
instance, baseline should be at the bottom most position of all
glyphs for Chinese, Japanese, and Korean. But, many of existing
fonts for those characters doesn't have correct `ascent' values
because they are designed to be used with ASCII fonts. To
display characters of different language on the same line, the
best way will be to arrange them in the middle of the line. So,
in such a case, again, we utilize the font property
`_MULE_BASELINE_OFFSET'. If the value is larger than `ascent' we
calculate baseline so that a character is arranged in the middle
of a line. */
int baseline_offset;
/* Non zero means a character should be composed at a position
relative to the height (or depth) of previous glyphs in the
following cases:
(1) The bottom of the character is higher than this value. In
this case, the character is drawn above the previous glyphs.
(2) The top of the character is lower than 0 (i.e. baseline
height). In this case, the character is drawn beneath the
previous glyphs.
This value is taken from a private font property
`_MULE_RELATIVE_COMPOSE' which is introduced by Emacs. */
int relative_compose;
/* Non zero means an ascent value to be used for a character
registered in char-table `use-default-ascent'. */
int default_ascent;
/* CCL program to calculate code points of the font. */
struct ccl_program *font_encoder;
/* Font-driver for the font. */
struct font_driver *driver;
/* Symbol of font font; x, ttf, pcf, etc, */
Lisp_Object format;
/* File name of the font, or NULL if the font is not associated with
a file. */
char *file_name;
/* Charset to encode a character code into a glyph code of the font.
-1 means that the font doesn't require this information to encode
a character. */
@ -171,15 +392,6 @@ struct font
determine it. */
int repertory_charset;
/* Minimum glyph width (in pixels). */
int min_width;
/* Ascent and descent of the font (in pixels). */
int ascent, descent;
/* 1 iff the font is scalable. */
int scalable;
/* There will be more to this structure, but they are private to a
font-driver. */
};
@ -212,20 +424,23 @@ struct font_bitmap
/* Predicates to check various font-related objects. */
/* 1 iff X is one of font-spec, font-entity, and font-object. */
#define FONTP(x) PSEUDOVECTORP (x, PVEC_FONT)
/* 1 iff X is font-spec. */
#define FONT_SPEC_P(x) \
(VECTORP (x) && ASIZE (x) == FONT_SPEC_MAX)
(FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_SPEC_MAX)
/* 1 iff X is font-entity. */
#define FONT_ENTITY_P(x) \
(VECTORP (x) && ASIZE (x) == FONT_ENTITY_MAX)
(FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_ENTITY_MAX)
/* 1 iff X is font-object. */
#define FONT_OBJECT_P(x) \
(XTYPE (x) == Lisp_Misc && XMISCTYPE (x) == Lisp_Misc_Save_Value)
#define FONTP(x) \
((VECTORP (x) && (ASIZE (x) == FONT_SPEC_MAX \
|| ASIZE (x) == FONT_ENTITY_MAX)) \
|| FONT_OBJECT_P (x))
(FONTP (x) && (ASIZE (x) & PSEUDOVECTOR_SIZE_MASK) == FONT_OBJECT_MAX)
/* 1 iff ENTITY can't be loaded. */
#define FONT_ENTITY_NOT_LOADABLE(entity) \
EQ (AREF (entity, FONT_OBJLIST_INDEX), Qt)
/* Flag ENTITY not loadable. */
#define FONT_ENTITY_SET_NOT_LOADABLE(entity) \
ASET (entity, FONT_OBJLIST_INDEX, Qt)
@ -235,19 +450,37 @@ struct font_bitmap
#define CHECK_FONT(x) \
do { if (! FONTP (x)) wrong_type_argument (Qfont, x); } while (0)
#define CHECK_FONT_SPEC(x) \
do { if (! FONT_SPEC_P (x)) wrong_type_argument (Qfont, x); } while (0)
do { if (! FONT_SPEC_P (x)) wrong_type_argument (Qfont_spec, x); } while (0)
#define CHECK_FONT_ENTITY(x) \
do { if (! FONT_ENTITY_P (x)) wrong_type_argument (Qfont, x); } while (0)
do { if (! FONT_ENTITY_P (x)) wrong_type_argument (Qfont_entity, x); } while (0)
#define CHECK_FONT_OBJECT(x) \
do { if (! FONT_OBJECT_P (x)) wrong_type_argument (Qfont, x); } while (0)
do { if (! FONT_OBJECT_P (x)) wrong_type_argument (Qfont_object, x); } while (0)
#define CHECK_FONT_GET_OBJECT(x, font) \
do { \
if (! FONT_OBJECT_P (x)) wrong_type_argument (Qfont, x); \
if (! XSAVE_VALUE (x)->pointer) error ("Font already closed"); \
font = XSAVE_VALUE (x)->pointer; \
#define CHECK_FONT_GET_OBJECT(x, font) \
do { \
CHECK_FONT_OBJECT (x); \
font = XFONT_OBJECT (x); \
} while (0)
#define XFONT_SPEC(p) \
(eassert (FONT_SPEC_P(p)), (struct font_spec *) XPNTR (p))
#define XFONT_ENTITY(p) \
(eassert (FONT_ENTITY_P(p)), (struct font_entity *) XPNTR (p))
#define XFONT_OBJECT(p) \
(eassert (FONT_OBJECT_P(p)), (struct font *) XPNTR (p))
#define XSETFONT(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_FONT))
/* Number of pt per inch (from the TeXbook). */
#define PT_PER_INCH 72.27
/* Return a pixel size (integer) corresponding to POINT size (double)
on resolution DPI. */
#define POINT_TO_PIXEL(POINT, DPI) ((POINT) * (DPI) / PT_PER_INCH + 0.5)
/* Return a point size (double) corresponding to POINT size (integer)
on resolution DPI. */
#define PIXEL_TO_POINT(PIXEL, DPI) ((PIXEL) * PT_PER_INCH / (DPI) + 0.5)
/* Ignore the difference of font pixel sizes less than or equal to
this value. */
#define FONT_PIXEL_SIZE_QUANTUM 1
@ -334,13 +567,19 @@ struct font_driver
/* Symbol indicating the type of the font-driver. */
Lisp_Object type;
/* 1 iff the font's foundary, family, and adstyle names are case
sensitve. */
int case_sensitive;
/* Return a cache of font-entities on frame F. The cache must be a
cons whose cdr part is the actual cache area. */
Lisp_Object (*get_cache) P_ ((FRAME_PTR F));
/* List fonts exactly matching with FONT_SPEC on FRAME. The value
is a vector of font-entities. This is the sole API that
allocates font-entities. */
is a list of font-entities. It is assured that the properties
WEIGHT to AVGWIDTH are all nil (i.e. not specified) in FONT_SPEC.
This and the following `match' are the only APIs that allocate
font-entities. */
Lisp_Object (*list) P_ ((Lisp_Object frame, Lisp_Object font_spec));
/* Return a font entity most closely maching with FONT_SPEC on
@ -359,8 +598,8 @@ struct font_driver
/* Open a font specified by FONT_ENTITY on frame F. If the font is
scalable, open it with PIXEL_SIZE. */
struct font *(*open) P_ ((FRAME_PTR f, Lisp_Object font_entity,
int pixel_size));
Lisp_Object (*open) P_ ((FRAME_PTR f, Lisp_Object font_entity,
int pixel_size));
/* Close FONT on frame F. */
void (*close) P_ ((FRAME_PTR f, struct font *font));
@ -477,6 +716,12 @@ struct font_driver
than the length of LGSTRING, nil should be return. In that case,
this function is called again with the larger LGSTRING. */
Lisp_Object (*shape) P_ ((Lisp_Object lgstring));
/* Optional.
If FONT is usable on frame F, return 0. Otherwise return -1.
*/
int (*check) P_ ((FRAME_PTR F, struct font *font));
};
@ -509,49 +754,62 @@ struct font_data_list
struct font_data_list *next;
};
extern int enable_font_backend;
EXFUN (Ffont_spec, MANY);
EXFUN (Fcopy_font_spec, 1);
EXFUN (Fmerge_font_spec, 2);
EXFUN (Ffont_get, 2);
EXFUN (Ffont_put, 3);
EXFUN (Flist_fonts, 4);
EXFUN (Ffont_family_list, 1);
EXFUN (Fclear_font_cache, 0);
EXFUN (Ffont_xlfd_name, 1);
extern Lisp_Object font_make_spec P_ ((void));
extern Lisp_Object font_make_entity P_ ((void));
extern Lisp_Object font_make_object P_ ((int));
extern int font_registry_charsets P_ ((Lisp_Object, struct charset **,
struct charset **));
extern Lisp_Object font_symbolic_weight P_ ((Lisp_Object font));
extern Lisp_Object font_symbolic_slant P_ ((Lisp_Object font));
extern Lisp_Object font_symbolic_width P_ ((Lisp_Object font));
extern int font_style_to_value P_ ((enum font_property_index prop,
Lisp_Object name, int noerror));
extern Lisp_Object font_style_symbolic P_ ((Lisp_Object font,
enum font_property_index prop,
int for_face));
extern int font_match_p P_ ((Lisp_Object spec, Lisp_Object entity));
extern Lisp_Object font_list_entities P_ ((Lisp_Object frame,
Lisp_Object spec));
extern Lisp_Object font_find_object P_ ((struct font *font));
extern Lisp_Object font_get_name P_ ((Lisp_Object font_object));
extern Lisp_Object font_get_spec P_ ((Lisp_Object font_object));
extern Lisp_Object font_spec_from_name P_ ((Lisp_Object font_name));
extern Lisp_Object font_get_frame P_ ((Lisp_Object font_object));
extern int font_has_char P_ ((FRAME_PTR, Lisp_Object, int));
extern unsigned font_encode_char P_ ((Lisp_Object, int));
extern int font_set_lface_from_name P_ ((FRAME_PTR f,
Lisp_Object lface,
Lisp_Object fontname,
int force_p, int may_fail_p));
extern void font_clear_prop P_ ((Lisp_Object *attrs,
enum font_property_index prop));
extern void font_update_lface P_ ((FRAME_PTR f, Lisp_Object *attrs));
extern Lisp_Object font_find_for_lface P_ ((FRAME_PTR f, Lisp_Object *lface,
Lisp_Object spec, int c));
extern Lisp_Object font_open_for_lface P_ ((FRAME_PTR f, Lisp_Object entity,
Lisp_Object *lface,
Lisp_Object spec));
extern void font_load_for_face P_ ((FRAME_PTR f, struct face *face));
extern Lisp_Object font_load_for_lface P_ ((FRAME_PTR f, Lisp_Object *lface,
Lisp_Object spec));
extern void font_prepare_for_face P_ ((FRAME_PTR f, struct face *face));
extern void font_done_for_face P_ ((FRAME_PTR f, struct face *face));
extern Lisp_Object font_open_by_name P_ ((FRAME_PTR f, char *name));
extern void font_close_object (FRAME_PTR f, Lisp_Object font_object);
extern Lisp_Object intern_downcase P_ ((char *str, int len));
extern Lisp_Object font_intern_prop P_ ((char *str, int len));
extern void font_update_sort_order P_ ((int *order));
extern void font_merge_old_spec P_ ((Lisp_Object name, Lisp_Object family,
Lisp_Object registry, Lisp_Object spec));
extern void font_parse_family_registry P_ ((Lisp_Object family,
Lisp_Object registry,
Lisp_Object spec));
extern Lisp_Object font_spec_from_family_registry P_ ((Lisp_Object family,
Lisp_Object registry));
extern int font_parse_xlfd P_ ((char *name, Lisp_Object font));
extern int font_unparse_xlfd P_ ((Lisp_Object font, int pixel_size,
@ -564,6 +822,9 @@ extern void free_font_driver_list P_ ((FRAME_PTR f));
extern Lisp_Object font_update_drivers P_ ((FRAME_PTR f, Lisp_Object list));
extern Lisp_Object font_at P_ ((int c, EMACS_INT pos, struct face *face,
struct window *w, Lisp_Object object));
extern EMACS_INT font_range P_ ((EMACS_INT pos, EMACS_INT limit,
struct face *face, FRAME_PTR f,
Lisp_Object object));
extern struct font *font_prepare_composition P_ ((struct composition *cmp,
FRAME_PTR f));