Commit a7840ffb authored by Kenichi Handa's avatar Kenichi Handa

Make font-get to get :otf value dynamically from a font-object.

parent b32d1614
......@@ -3078,7 +3078,7 @@ font_open_entity (f, entity, pixel_size)
return Qnil;
ASET (entity, FONT_OBJLIST_INDEX,
Fcons (font_object, AREF (entity, FONT_OBJLIST_INDEX)));
ASET (font_object, FONT_OBJLIST_INDEX, Qnil);
ASET (font_object, FONT_ENTITY_INDEX, entity);
num_fonts++;
font = XFONT_OBJECT (font_object);
......@@ -4231,16 +4231,25 @@ properties in TO. */)
DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0,
doc: /* Return the value of FONT's property KEY.
FONT is a font-spec, a font-entity, or a font-object.
KEY must be one of these symbols:
KEY is any symbol, but these are reserved for specific meanings:
:family, :weight, :slant, :width, :foundry, :adstyle, :registry,
:size, :name, :script
:size, :name, :script, :otf
See the documentation of `font-spec' for their meanings.
If FONT is a font-entity or font-object, the value of :script may be
a list of scripts that are supported by the font. */)
In addition, if FONT is a font-entity or a font-object, values of
:script and :otf are different from those of a font-spec as below:
The value of :script may be a list of scripts that are supported by the font.
The value of :otf is a cons (GSUB . GPOS) where GSUB and GPOS are lists
representing the OpenType features supported by the font by this form:
((SCRIPT (LANGSYS FEATURE ...) ...) ...)
SCRIPT, LANGSYS, and FEATURE are all symbols representing OpenType
Layout tags. */)
(font, key)
Lisp_Object font, key;
{
int idx;
Lisp_Object val;
CHECK_FONT (font);
CHECK_SYMBOL (key);
......@@ -4250,7 +4259,28 @@ a list of scripts that are supported by the font. */)
return font_style_symbolic (font, idx, 0);
if (idx >= 0 && idx < FONT_EXTRA_INDEX)
return AREF (font, idx);
return Fcdr (Fassq (key, AREF (font, FONT_EXTRA_INDEX)));
val = Fassq (key, AREF (font, FONT_EXTRA_INDEX));
if (NILP (val) && EQ (key, QCotf) && FONT_OBJECT_P (font))
{
struct font *fontp = XFONT_OBJECT (font);
Lisp_Object entity = AREF (font, FONT_ENTITY_INDEX);
val = Fassq (key, AREF (entity, FONT_EXTRA_INDEX));
if (NILP (val))
{
if (fontp->driver->otf_capability)
val = fontp->driver->otf_capability (fontp);
else
val = Fcons (Qnil, Qnil);
font_put_extra (font, QCotf, val);
font_put_extra (entity, QCotf, val);
}
else
val = Fcdr (val);
}
else
val = Fcdr (val);
return val;
}
#ifdef HAVE_WINDOW_SYSTEM
......@@ -4342,18 +4372,37 @@ are to be displayed on. If omitted, the selected frame is used. */)
#endif
DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0,
doc: /* Set one property of FONT-SPEC: give property PROP value VAL. */)
(font_spec, prop, val)
Lisp_Object font_spec, prop, val;
doc: /* Set one property of FONT: give property KEY value VAL.
FONT is a font-spec, a font-entity, or a font-object.
If FONT is a font-spec, KEY can be any symbol. But if KEY is the one
accepted by the function `font-spec' (which see), VAL must be what
allowed in `font-spec'.
If FONT is a font-entity or a font-object, KEY must not be the one
accepted by `font-spec'. */)
(font, prop, val)
Lisp_Object font, prop, val;
{
int idx;
CHECK_FONT_SPEC (font_spec);
idx = get_font_prop_index (prop);
if (idx >= 0 && idx < FONT_EXTRA_INDEX)
ASET (font_spec, idx, font_prop_validate (idx, Qnil, val));
{
CHECK_FONT_SPEC (font);
ASET (font, idx, font_prop_validate (idx, Qnil, val));
}
else
font_put_extra (font_spec, prop, font_prop_validate (0, prop, val));
{
if (EQ (prop, QCname)
|| EQ (prop, QCscript)
|| EQ (prop, QClang)
|| EQ (prop, QCotf))
CHECK_FONT_SPEC (font);
else
CHECK_FONT (font);
font_put_extra (font, prop, font_prop_validate (0, prop, val));
}
return val;
}
......@@ -4906,25 +4955,99 @@ If the font is not OpenType font, CAPABILITY is nil. */)
return val;
}
DEFUN ("get-font-glyphs", Fget_font_glyphs, Sget_font_glyphs, 2, 2, 0,
doc: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING.
Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */)
(font_object, string)
Lisp_Object font_object, string;
DEFUN ("font-get-glyphs", Ffont_get_glyphs, Sfont_get_glyphs, 3, 4, 0,
doc:
/* Return a vector of FONT-OBJECT's glyphs for the specified characters.
FROM and TO are positions (integers or markers) specifying a region
of the current buffer.
If the optional fourth arg OBJECT is not nil, it is a string or a
vector containing the target characters.
Each element is a vector containing information of a glyph in this format:
[FROM-IDX TO-IDX C CODE WIDTH LBEARING RBEARING ASCENT DESCENT ADJUSTMENT]
where
FROM is an index numbers of a character the glyph corresponds to.
TO is the same as FROM.
C is the character of the glyph.
CODE is the glyph-code of C in FONT-OBJECT.
WIDTH thru DESCENT are the metrics (in pixels) of the glyph.
ADJUSTMENT is always nil.
If FONT-OBJECT doesn't have a glyph for a character,
the corresponding element is nil. */)
(font_object, from, to, object)
Lisp_Object font_object, from, to, object;
{
struct font *font;
int i, len;
Lisp_Object vec;
int i, len, c;
Lisp_Object *chars, vec;
USE_SAFE_ALLOCA;
CHECK_FONT_GET_OBJECT (font_object, font);
CHECK_STRING (string);
len = SCHARS (string);
if (NILP (object))
{
EMACS_INT charpos, bytepos;
validate_region (&from, &to);
if (EQ (from, to))
return Qnil;
len = XFASTINT (to) - XFASTINT (from);
SAFE_ALLOCA_LISP (chars, len);
charpos = XFASTINT (from);
bytepos = CHAR_TO_BYTE (charpos);
for (i = 0; charpos < XFASTINT (to); i++)
{
FETCH_CHAR_ADVANCE (c, charpos, bytepos);
chars[i] = make_number (c);
}
}
else if (STRINGP (object))
{
const unsigned char *p;
CHECK_NUMBER (from);
CHECK_NUMBER (to);
if (XINT (from) < 0 || XINT (from) > XINT (to)
|| XINT (to) > SCHARS (object))
args_out_of_range_3 (object, from, to);
if (EQ (from, to))
return Qnil;
len = XFASTINT (to) - XFASTINT (from);
SAFE_ALLOCA_LISP (chars, len);
p = SDATA (object);
if (STRING_MULTIBYTE (object))
for (i = 0; i < len; i++)
{
c = STRING_CHAR_ADVANCE (p);
chars[i] = make_number (c);
}
else
for (i = 0; i < len; i++)
chars[i] = make_number (p[i]);
}
else
{
CHECK_VECTOR (object);
CHECK_NUMBER (from);
CHECK_NUMBER (to);
if (XINT (from) < 0 || XINT (from) > XINT (to)
|| XINT (to) > ASIZE (object))
args_out_of_range_3 (object, from, to);
if (EQ (from, to))
return Qnil;
len = XFASTINT (to) - XFASTINT (from);
for (i = 0; i < len; i++)
{
Lisp_Object elt = AREF (object, XFASTINT (from) + i);
CHECK_CHARACTER (elt);
}
chars = &(AREF (object, XFASTINT (from)));
}
vec = Fmake_vector (make_number (len), Qnil);
for (i = 0; i < len; i++)
{
Lisp_Object ch = Faref (string, make_number (i));
Lisp_Object val;
int c = XINT (ch);
Lisp_Object g;
int c = XFASTINT (chars[i]);
unsigned code;
EMACS_INT cod;
struct font_metrics metrics;
......@@ -4932,20 +5055,21 @@ Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. *
cod = code = font->driver->encode_char (font, c);
if (code == FONT_INVALID_CODE)
continue;
val = Fmake_vector (make_number (6), Qnil);
if (cod <= MOST_POSITIVE_FIXNUM)
ASET (val, 0, make_number (code));
else
ASET (val, 0, Fcons (make_number (code >> 16),
make_number (code & 0xFFFF)));
g = Fmake_vector (make_number (LGLYPH_SIZE), Qnil);
LGLYPH_SET_FROM (g, i);
LGLYPH_SET_TO (g, i);
LGLYPH_SET_CHAR (g, c);
LGLYPH_SET_CODE (g, code);
font->driver->text_extents (font, &code, 1, &metrics);
ASET (val, 1, make_number (metrics.lbearing));
ASET (val, 2, make_number (metrics.rbearing));
ASET (val, 3, make_number (metrics.width));
ASET (val, 4, make_number (metrics.ascent));
ASET (val, 5, make_number (metrics.descent));
ASET (vec, i, val);
}
LGLYPH_SET_WIDTH (g, metrics.width);
LGLYPH_SET_LBEARING (g, metrics.lbearing);
LGLYPH_SET_RBEARING (g, metrics.rbearing);
LGLYPH_SET_ASCENT (g, metrics.ascent);
LGLYPH_SET_DESCENT (g, metrics.descent);
ASET (vec, i, g);
}
if (! VECTORP (object))
SAFE_FREE ();
return vec;
}
......@@ -5347,7 +5471,7 @@ syms_of_font ()
defsubr (&Sopen_font);
defsubr (&Sclose_font);
defsubr (&Squery_font);
defsubr (&Sget_font_glyphs);
defsubr (&Sfont_get_glyphs);
defsubr (&Sfont_match_p);
defsubr (&Sfont_at);
#if 0
......
......@@ -159,14 +159,19 @@ enum font_property_index
/* This value is the length of font-spec vector. */
FONT_SPEC_MAX,
/* The followings are used only for a font-entity. */
/* The followings are used only for a font-entity and a font-object. */
/* List of font-objects opened from the font-entity. */
FONT_OBJLIST_INDEX = FONT_SPEC_MAX,
/* Font-entity from which the font-object is opened. */
FONT_ENTITY_INDEX = FONT_SPEC_MAX,
/* This value is the length of font-entity vector. */
FONT_ENTITY_MAX,
/* The followings are used only for a font-object. */
/* XLFD name of the font (string). */
FONT_NAME_INDEX = FONT_ENTITY_MAX,
......
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