/* Fontset handler.
Copyright (C) 1995, 1997, 2000 Electrotechnical Laboratory, JAPAN.
- Licensed to the Free Software Foundation.
- Copyright (C) 2001, 2002
+ Licensed to the Free Software Foundation.
+ Copyright (C) 2003
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H13PRO009
#include "keyboard.h"
#include "frame.h"
#include "dispextern.h"
+#include "intervals.h"
#include "fontset.h"
#include "window.h"
-#ifdef FONTSET_DEBUG
#undef xassert
+#ifdef FONTSET_DEBUG
#define xassert(X) do {if (!(X)) abort ();} while (0)
#undef INLINE
#define INLINE
-#endif
+#else /* not FONTSET_DEBUG */
+#define xassert(X) (void) 0
+#endif /* not FONTSET_DEBUG */
+EXFUN (Fclear_face_cache, 1);
/* FONTSET
A fontset is a collection of font related information to give
- similar appearance (style, etc) of characters. There are two kinds
- of fontsets; base and realized. A base fontset is created by
- `new-fontset' from Emacs Lisp explicitly. A realized fontset is
- created implicitly when a face is realized for ASCII characters. A
- face is also realized for non-ASCII characters based on an ASCII
- face. All of non-ASCII faces based on the same ASCII face share
- the same realized fontset.
-
+ similar appearance (style, etc) of characters. A fontset has two
+ roles. One is to use for the frame parameter `font' as if it is an
+ ASCII font. In that case, Emacs uses the font specified for
+ `ascii' script for the frame's default font.
+
+ Another role, the more important one, is to provide information
+ about which font to use for each non-ASCII character.
+
+ There are two kinds of fontsets; base and realized. A base fontset
+ is created by `new-fontset' from Emacs Lisp explicitly. A realized
+ fontset is created implicitly when a face is realized for ASCII
+ characters. A face is also realized for non-ASCII characters based
+ on an ASCII face. All of non-ASCII faces based on the same ASCII
+ face share the same realized fontset.
+
A fontset object is implemented by a char-table whose default value
and parent are always nil.
- An element of a base fontset is a font specification of the form:
- [ FAMILY WEIGHT SLANT SWIDTH REGISTRY ] (vector of size 5)
+ An element of a base fontset is a vector of FONT-DEFs which itself
+ is a vector [ FONT-SPEC ENCODING REPERTORY ].
+
+ FONT-SPEC is:
+ [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
or
- FONT-NAME (strig)
+ FONT-NAME
+ where FAMILY, WEIGHT, SLANT, SWIDTH, ADSTYLE, REGISTRY, and
+ FONT-NAME are strings.
+
+ Note: Currently WEIGHT through ADSTYLE are ignored.
+
+ ENCODING is a charset ID that can convert characters to glyph codes
+ of the corresponding font.
+
+ REPERTORY is a charset ID, a char-table, or nil. If REPERTORY is a
+ charset ID, the repertory of the charset exactly matches with that
+ of the font. If REPERTORY is a char-table, all characters who have
+ a non-nil value in the table are supported. If REPERTORY is nil,
+ we consult with the font itself to get the repertory.
+
+ ENCODING and REPERTORY are extracted from the variable
+ Vfont_encoding_alist by using a font name generated from FONT-SPEC
+ (if it is a vector) or FONT-NAME as a matching target.
+
+
+ An element of a realized fontset is nil or t, or has this form:
+
+ [CHARSET-ORDERED-LIST-TICK PREFERRED-CHARSET-ID
+ PREFERRED-RFONT-DEF RFONT-DEF0 RFONT-DEF1 ...].
- FAMILY and REGISTRY are strings.
+ RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
- WEIGHT, SLANT, and SWIDTH must be symbols that set-face-attribute
- accepts as attribute values for :weight, :slant, :swidth
- respectively.
+ [ FACE-ID FONT-INDEX FONT-DEF OPENED-FONT-NAME ]
+ RFONT-DEFn is automatically reordered by the current charset
+ priority list.
- A fontset has 7 extra slots.
+ The value nil means that we have not yet generated the above vector
+ from the base of the fontset.
- The 1st slot is an ID number of the fontset.
+ The value t means that no font is available for the corresponding
+ range of characters.
- The 2nd slot is a name of the fontset in a base fontset, and nil in
- a realized fontset.
- The 3rd slot is nil in a base fontset, and a base fontset in a
- realized fontset.
+ A fontset has 9 extra slots.
- The 4th slot is a frame that the fontset belongs to. This is nil
- in a base fontset.
+ The 1st slot: the ID number of the fontset
- The 5th slot is a cons of 0 and fontname for ASCII characters in a
- base fontset, and nil in a realized face.
+ The 2nd slot:
+ base: the name of the fontset
+ realized: nil
- The 6th slot is an alist of a charset vs. the corresponding font
- specification.
+ The 3rd slot:
+ base: nil
+ realized: the base fontset
- The 7th slot is an alist of a font specification vs. the
- corresponding face ID. In a base fontset, the face IDs are all
- nil.
+ The 4th slot:
+ base: nil
+ realized: the frame that the fontset belongs to
- All fontsets are recorded in Vfontset_table.
+ The 5th slot:
+ base: the font name for ASCII characters
+ realized: nil
+
+ The 6th slot:
+ base: nil
+ realized: the ID number of a face to use for characters that
+ has no font in a realized fontset.
+
+ The 7th slot:
+ base: nil
+ realized: Alist of font index vs the corresponding repertory
+ char-table.
+
+ The 8th slot:
+ base: nil
+ realized: If the base is not the default fontset, a fontset
+ realized from the default fontset, else nil.
+
+ The 9th slot:
+ base: Same as element value (but for fallback fonts).
+ realized: Likewise.
+
+ All fontsets are recorded in the vector Vfontset_table.
DEFAULT FONTSET
- There's a special fontset named `default fontset' which defines the
- default font specifications. When a base fontset doesn't specify a
- font for a specific character, the corresponding value in the
- default fontset is used. The format is the same as a base fontset.
+ There's a special base fontset named `default fontset' which
+ defines the default font specifications. When a base fontset
+ doesn't specify a font for a specific character, the corresponding
+ value in the default fontset is used.
The parent of a realized fontset created for such a face that has
no fontset is the default fontset.
The other codes handle fontsets only by their ID numbers. They
usually use the variable name `fontset' for IDs. But, in this
file, we always use varialbe name `id' for IDs, and name `fontset'
- for the actual fontset objects (i.e. char-table objects).
+ for an actual fontset object, i.e., char-table.
*/
/********** VARIABLES and FUNCTION PROTOTYPES **********/
extern Lisp_Object Qfont;
-Lisp_Object Qfontset;
+static Lisp_Object Qfontset;
+static Lisp_Object Qfontset_info;
+static Lisp_Object Qprepend, Qappend;
/* Vector containing all fontsets. */
static Lisp_Object Vfontset_table;
This function set the member `encoder' of the structure. */
void (*find_ccl_program_func) P_ ((struct font_info *));
+Lisp_Object (*get_font_repertory_func) P_ ((struct frame *,
+ struct font_info *));
+
/* Check if any window system is used now. */
void (*check_window_system_func) P_ ((void));
/* Prototype declarations for static functions. */
+static Lisp_Object fontset_add P_ ((Lisp_Object, Lisp_Object, Lisp_Object,
+ Lisp_Object));
+static Lisp_Object fontset_font P_ ((Lisp_Object, int, struct face *, int));
static Lisp_Object make_fontset P_ ((Lisp_Object, Lisp_Object, Lisp_Object));
-static int fontset_id_valid_p P_ ((int));
static Lisp_Object fontset_pattern_regexp P_ ((Lisp_Object));
+static void accumulate_script_ranges P_ ((Lisp_Object, Lisp_Object,
+ Lisp_Object));
+static Lisp_Object find_font_encoding P_ ((char *));
+
+static void set_fontset_font P_ ((Lisp_Object, Lisp_Object));
+
+#ifdef FONTSET_DEBUG
+
+/* Return 1 if ID is a valid fontset id, else return 0. */
+
+static int
+fontset_id_valid_p (id)
+ int id;
+{
+ return (id >= 0 && id < ASIZE (Vfontset_table) - 1);
+}
+
+#endif
+
\f
/********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
#define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
#define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
-#define BASE_FONTSET_P(fontset) STRINGP (FONTSET_NAME (fontset))
-
/* Macros to access special values of (realized) FONTSET. */
#define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
#define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
-#define FONTSET_CHARSET_ALIST(fontset) XCHAR_TABLE (fontset)->extras[5]
-#define FONTSET_FACE_ALIST(fontset) XCHAR_TABLE (fontset)->extras[6]
+#define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
+#define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6]
+#define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
+/* For both base and realized fontset. */
+#define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
-/* Return the element of FONTSET (char-table) at index C (character). */
+#define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
-#define FONTSET_REF(fontset, c, etl) ((elt) = fontset_ref ((fontset), (c)))
+
+/* Return the element of FONTSET for the character C. If FONTSET is a
+ base fontset other then the default fontset and FONTSET doesn't
+ contain information for C, return the information in the default
+ fontset. */
+
+#define FONTSET_REF(fontset, c) \
+ (EQ (fontset, Vdefault_fontset) \
+ ? CHAR_TABLE_REF (fontset, c) \
+ : fontset_ref ((fontset), (c)))
static Lisp_Object
fontset_ref (fontset, c)
{
Lisp_Object elt;
- while (1)
+ elt = CHAR_TABLE_REF (fontset, c);
+ if (NILP (elt) && ! EQ (fontset, Vdefault_fontset)
+ /* Don't check Vdefault_fontset for a realized fontset. */
+ && NILP (FONTSET_BASE (fontset)))
+ elt = CHAR_TABLE_REF (Vdefault_fontset, c);
+ return elt;
+}
+
+
+/* Return the element of FONTSET for the character C, set FROM and TO
+ to the range of characters around C that have the same value as C.
+ If FONTSET is a base fontset other then the default fontset and
+ FONTSET doesn't contain information for C, return the information
+ in the default fontset. */
+
+#define FONTSET_REF_AND_RANGE(fontset, c, form, to) \
+ (EQ (fontset, Vdefault_fontset) \
+ ? char_table_ref_and_range (fontset, c, &from, &to) \
+ : fontset_ref_and_range (fontset, c, &from, &to))
+
+static Lisp_Object
+fontset_ref_and_range (fontset, c, from, to)
+ Lisp_Object fontset;
+ int c;
+ int *from, *to;
+{
+ Lisp_Object elt;
+
+ elt = char_table_ref_and_range (fontset, c, from, to);
+ if (NILP (elt) && ! EQ (fontset, Vdefault_fontset)
+ /* Don't check Vdefault_fontset for a realized fontset. */
+ && NILP (FONTSET_BASE (fontset)))
{
- elt = CHAR_TABLE_REF (fontset, c);
- if (NILP (elt) && ASCII_CHAR_P (c))
- elt = FONTSET_ASCII (fontset);
- if (NILP (elt))
- {
- Lisp_Object tail;
- struct charset *charset;
+ int from1, to1;
- for (tail = FONTSET_CHARSET_ALIST (fontset);
- CONSP (tail); tail = XCDR (tail))
- {
- charset = CHARSET_FROM_ID (XCAR (XCAR (tail)));
- if (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset))
- {
- elt = XCDR (XCAR (tail));
- break;
- }
- }
- }
- if (! NILP (elt) || EQ (fontset, Vdefault_fontset))
- break;
- fontset = Vdefault_fontset;
+ elt = char_table_ref_and_range (Vdefault_fontset, c, &from1, &to1);
+ if (*from < from1)
+ *from = from1;
+ if (*to > to1)
+ *to = to1;
}
return elt;
}
-/* Set the element of FONTSET at index IDX to the value ELT. IDX may
- be a character or a charset. */
+/* Set elements of FONTSET for characters in RANGE to the value ELT.
+ RANGE is a cons (FROM . TO), where FROM and TO are character codes
+ specifying a range. */
-#define FONTSET_SET(fontset, c, newelt) fontset_set(fontset, c, newelt)
+#define FONTSET_SET(fontset, range, elt) \
+ Fset_char_table_range ((fontset), (range), (elt))
-static void
-fontset_set (fontset, idx, elt)
- Lisp_Object fontset, idx, elt;
+
+/* Modify the elements of FONTSET for characters in RANGE by replacing
+ with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
+ and TO are character codes specifying a range. If ADD is nil,
+ replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
+ append ELT. */
+
+#define FONTSET_ADD(fontset, range, elt, add) \
+ (NILP (add) \
+ ? (NILP (range) \
+ ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
+ : Fset_char_table_range ((fontset), (range), \
+ Fmake_vector (make_number (1), (elt)))) \
+ : fontset_add ((fontset), (range), (elt), (add)))
+
+static Lisp_Object
+fontset_add (fontset, range, elt, add)
+ Lisp_Object fontset, range, elt, add;
{
- if (SYMBOLP (idx))
+ Lisp_Object args[2];
+ int idx = (EQ (add, Qappend) ? 0 : 1);
+
+ args[1 - idx] = Fmake_vector (make_number (1), elt);
+
+ if (CONSP (range))
{
- Lisp_Object id, slot, tail;
-
- id = make_number (CHARSET_SYMBOL_ID (idx));
- if (id == charset_ascii)
- Fset_char_table_range (fontset,
- Fcons (make_number (0), make_number (127)),
- elt);
- else
- {
- slot = Fassq (id, FONTSET_CHARSET_ALIST (fontset));
- if (CONSP (slot))
- XCDR (slot) = elt;
- else if (CONSP (FONTSET_CHARSET_ALIST (fontset)))
- {
- for (tail = FONTSET_CHARSET_ALIST (fontset);
- CONSP (XCDR (tail)); tail = XCDR (tail));
- XCDR (tail) = Fcons (Fcons (id, elt), Qnil);
- }
- else
- FONTSET_CHARSET_ALIST (fontset) = Fcons (Fcons (id, elt), Qnil);
- }
+ int from = XINT (XCAR (range));
+ int to = XINT (XCDR (range));
+ int from1, to1;
+
+ do {
+ args[idx] = char_table_ref_and_range (fontset, from, &from1, &to1);
+ if (to < to1)
+ to1 = to;
+ char_table_set_range (fontset, from, to1,
+ NILP (args[idx]) ? args[1 - idx]
+ : Fvconcat (2, args));
+ from = to1 + 1;
+ } while (from < to);
}
else
{
- int from = XINT (XCAR (idx));
- int to = XINT (XCDR (idx));
+ args[idx] = FONTSET_FALLBACK (fontset);
+ FONTSET_FALLBACK (fontset)
+ = NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args);
+ }
+ return Qnil;
+}
- if (from == to)
- CHAR_TABLE_SET (fontset, from, elt);
- else
- Fset_char_table_range (fontset, idx, elt);
+
+/* Update FONTSET_ELEMENT which has this form:
+ [CHARSET-ORDERED-LIST-TICK PREFERRED-CHARSET-ID PREFERRED-RFONT-DEF
+ RFONT-DEF0 RFONT-DEF1 ...].
+ Reorder RFONT-DEFs according to the current order of charset
+ (Vcharset_ordered_list), and update CHARSET-ORDERED-LIST-TICK to
+ the latest value. */
+
+static void
+reorder_font_vector (fontset_element)
+ Lisp_Object fontset_element;
+{
+ Lisp_Object vec, list, *new_vec;
+ Lisp_Object font_def;
+ int size;
+ int *charset_id_table;
+ int i, idx;
+
+ ASET (fontset_element, 0, make_number (charset_ordered_list_tick));
+ size = ASIZE (fontset_element) - 3;
+ if (size <= 1)
+ /* No need to reorder VEC. */
+ return;
+ charset_id_table = (int *) alloca (sizeof (int) * size);
+ new_vec = (Lisp_Object *) alloca (sizeof (Lisp_Object) * size);
+
+ /* At first, extract ENCODING (a chaset ID) from each FONT-DEF.
+ FONT-DEF has this form:
+ [FACE-ID FONT-INDEX [ FONT-SPEC ENCODING REPERTORY ]] */
+ for (i = 0; i < size; i++)
+ {
+ font_def = AREF (fontset_element, i + 3);
+ charset_id_table[i] = XINT (AREF (AREF (font_def, 2), 1));
}
+
+ /* Then, store FONT-DEFs in NEW_VEC in the correct order. */
+ for (idx = 0, list = Vcharset_ordered_list;
+ idx < size && CONSP (list); list = XCDR (list))
+ {
+ for (i = 0; i < size; i++)
+ if (charset_id_table[i] == XINT (XCAR (list)))
+ new_vec[idx++] = AREF (fontset_element, i + 3);
+ }
+
+ /* At last, update FONT-DEFs. */
+ for (i = 0; i < size; i++)
+ ASET (fontset_element, i + 3, new_vec[i]);
+}
+
+
+/* Load a font matching the font related attributes in FACE->lface and
+ font pattern in FONT_DEF of FONTSET, and return an index of the
+ font. FONT_DEF has this form:
+ [ FONT-SPEC ENCODING REPERTORY ]
+ If REPERTORY is nil, generate a char-table representing the font
+ repertory by looking into the font itself. */
+
+static int
+load_font_get_repertory (f, face, font_def, fontset)
+ FRAME_PTR f;
+ struct face *face;
+ Lisp_Object font_def;
+ Lisp_Object fontset;
+{
+ char *font_name;
+ struct font_info *font_info;
+ int charset;
+
+ font_name = choose_face_font (f, face->lface, AREF (font_def, 0), NULL);
+ charset = XINT (AREF (font_def, 1));
+ if (! (font_info = fs_load_font (f, font_name, charset)))
+ return -1;
+
+ if (NILP (AREF (font_def, 2))
+ && NILP (Fassq (make_number (font_info->font_idx),
+ FONTSET_REPERTORY (fontset))))
+ {
+ /* We must look into the font to get the correct repertory as a
+ char-table. */
+ Lisp_Object repertory;
+
+ repertory = (*get_font_repertory_func) (f, font_info);
+ FONTSET_REPERTORY (fontset)
+ = Fcons (Fcons (make_number (font_info->font_idx), repertory),
+ FONTSET_REPERTORY (fontset));
+ }
+
+ return font_info->font_idx;
}
-/* Return a face registerd in the realized fontset FONTSET for the
- character C. Return -1 if a face ID is not yet set. */
+/* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
+ character C. If the corresponding font is not yet opened, open it
+ (if FACE is not NULL) or return Qnil (if FACE is NULL).
+ If no proper font is found for C, return Qnil. */
-static struct face *
-fontset_face (fontset, c)
+static Lisp_Object
+fontset_font (fontset, c, face, id)
Lisp_Object fontset;
int c;
+ struct face *face;
+ int id;
{
- Lisp_Object base, elt;
- int id;
- struct face *face;
+ Lisp_Object base_fontset, elt, vec;
+ int i, from, to;
+ int font_idx;
+ FRAME_PTR f = XFRAME (FONTSET_FRAME (fontset));
- base = FONTSET_BASE (fontset);
- FONTSET_REF (base, c, elt);
+ base_fontset = FONTSET_BASE (fontset);
+ vec = CHAR_TABLE_REF (fontset, c);
+ if (EQ (vec, Qt))
+ goto try_fallback;
- if (NILP (elt))
- return NULL;
+ if (NILP (vec))
+ {
+ /* We have not yet decided a face for C. */
+ Lisp_Object range;
- elt = Fassoc (elt, FONTSET_FACE_ALIST (fontset));
- if (! CONSP (elt))
- return NULL;
- id = XINT (XCDR (elt));
- face = FACE_FROM_ID (XFRAME (FONTSET_FRAME (fontset)), id);
- return face;
+ if (! face)
+ return Qnil;
+ elt = FONTSET_REF_AND_RANGE (base_fontset, c, from, to);
+ range = Fcons (make_number (from), make_number (to));
+ if (NILP (elt))
+ {
+ /* Record that we have no font for characters of this
+ range. */
+ vec = Qt;
+ FONTSET_SET (fontset, range, vec);
+ goto try_fallback;
+ }
+ /* Build a vector [ -1 -1 nil NEW-ELT0 NEW-ELT1 NEW-ELT2 ... ],
+ where the first -1 is to force reordering of NEW-ELTn,
+ NEW-ETLn is [nil nil AREF (elt, n) nil]. */
+ vec = Fmake_vector (make_number (ASIZE (elt) + 3), make_number (-1));
+ ASET (vec, 2, Qnil);
+ for (i = 0; i < ASIZE (elt); i++)
+ {
+ Lisp_Object tmp;
+
+ tmp = Fmake_vector (make_number (4), Qnil);
+ ASET (tmp, 2, AREF (elt, i));
+ ASET (vec, 3 + i, tmp);
+ }
+ /* Then store it in the fontset. */
+ FONTSET_SET (fontset, range, vec);
+ }
+
+ retry:
+ if (XINT (AREF (vec, 0)) != charset_ordered_list_tick)
+ /* The priority of charsets is changed after we selected a face
+ for C last time. */
+ reorder_font_vector (vec);
+
+ if (id < 0)
+ i = 3;
+ else if (id == XFASTINT (AREF (vec, 1)))
+ i = 2;
+ else
+ {
+ ASET (vec, 1, make_number (id));
+ for (i = 3; i < ASIZE (vec); i++)
+ if (id == XFASTINT (AREF (AREF (AREF (vec, i), 2), 1)))
+ break;
+ if (i < ASIZE (vec))
+ {
+ ASET (vec, 2, AREF (vec, i));
+ i = 2;
+ }
+ else
+ {
+ ASET (vec, 2, Qnil);
+ i = 3;
+ }
+ }
+
+ /* Find the first available font in the vector of RFONT-DEF. */
+ for (; i < ASIZE (vec); i++)
+ {
+ Lisp_Object font_def;
+
+ elt = AREF (vec, i);
+ if (NILP (elt))
+ continue;
+ /* ELT == [ FACE-ID FONT-INDEX FONT-DEF OPENED-FONT-NAME ] */
+ if (INTEGERP (AREF (elt, 1)) && XINT (AREF (elt, 1)) < 0)
+ /* We couldn't open this font last time. */
+ continue;
+
+ if (!face && NILP (AREF (elt, 1)))
+ /* We have not yet opened the font. */
+ return Qnil;
+
+ font_def = AREF (elt, 2);
+ /* FONT_DEF == [ FONT-SPEC ENCODING REPERTORY ] */
+ if (INTEGERP (AREF (font_def, 2)))
+ {
+ /* The repertory is specified by charset ID. */
+ struct charset *charset
+ = CHARSET_FROM_ID (XINT (AREF (font_def, 2)));
+
+ if (! CHAR_CHARSET_P (c, charset))
+ /* This font can't display C. */
+ continue;
+ }
+ else if (CHAR_TABLE_P (AREF (font_def, 2)))
+ {
+ /* The repertory is specified by a char table. */
+ if (NILP (CHAR_TABLE_REF (AREF (font_def, 2), c)))
+ /* This font can't display C. */
+ continue;
+ }
+ else
+ {
+ Lisp_Object slot;
+
+ if (! INTEGERP (AREF (elt, 1)))
+ {
+ /* We have not yet opened a font matching this spec.
+ Open the best matching font now and register the
+ repertory. */
+ struct font_info *font_info;
+
+ font_idx = load_font_get_repertory (f, face, font_def, fontset);
+ ASET (elt, 1, make_number (font_idx));
+ if (font_idx < 0)
+ /* This means that we couldn't find a font matching
+ FONT_DEF. */
+ continue;
+ font_info = (*get_font_info_func) (f, font_idx);
+ ASET (elt, 3, build_string (font_info->full_name));
+ }
+
+ slot = Fassq (AREF (elt, 1), FONTSET_REPERTORY (fontset));
+ xassert (CONSP (slot));
+ if (NILP (CHAR_TABLE_REF (XCDR (slot), c)))
+ /* This font can't display C. */
+ continue;
+ }
+
+ /* Now we have decided to use this font spec to display C. */
+ if (! INTEGERP (AREF (elt, 1)))
+ {
+ /* But not yet opened the best matching font. */
+ struct font_info *font_info;
+
+ font_idx = load_font_get_repertory (f, face, font_def, fontset);
+ ASET (elt, 1, make_number (font_idx));
+ if (font_idx < 0)
+ /* Can't open it. Try the other one. */
+ continue;
+ font_info = (*get_font_info_func) (f, font_idx);
+ ASET (elt, 3, build_string (font_info->full_name));
+ }
+
+ /* Now we have the opened font. */
+ return elt;
+ }
+
+ try_fallback:
+ if (! EQ (vec, FONTSET_FALLBACK (fontset)))
+ {
+ vec = FONTSET_FALLBACK (fontset);
+ if (VECTORP (vec))
+ goto retry;
+ if (EQ (vec, Qt))
+ goto try_default;
+ elt = FONTSET_FALLBACK (base_fontset);
+ if (! NILP (elt))
+ {
+ vec = Fmake_vector (make_number (ASIZE (elt) + 3), make_number (-1));
+ ASET (vec, 2, Qnil);
+ for (i = 0; i < ASIZE (elt); i++)
+ {
+ Lisp_Object tmp;
+
+ tmp = Fmake_vector (make_number (4), Qnil);
+ ASET (tmp, 2, AREF (elt, i));
+ ASET (vec, 3 + i, tmp);
+ }
+ FONTSET_FALLBACK (fontset) = vec;
+ goto retry;
+ }
+ /* Record that this fontset has no fallback fonts. */
+ FONTSET_FALLBACK (fontset) = Qt;
+ }
+
+ /* Try the default fontset. */
+ try_default:
+ if (! EQ (base_fontset, Vdefault_fontset))
+ {
+ if (NILP (FONTSET_DEFAULT (fontset)))
+ FONTSET_DEFAULT (fontset)
+ = make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset);
+ return fontset_font (FONTSET_DEFAULT (fontset), c, face, id);
+ }
+ return Qnil;
}
if (id + 1 == size)
{
+ /* We must grow Vfontset_table. */
Lisp_Object tem;
int i;
\f
-/********** INTERFACES TO xfaces.c and dispextern.h **********/
+/********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
-/* Return name of the fontset with ID. */
+/* Return the name of the fontset who has ID. */
Lisp_Object
fontset_name (id)
}
-/* Return ASCII font name of the fontset with ID. */
+/* Return the ASCII font name of the fontset who has ID. */
Lisp_Object
fontset_ascii (id)
int id;
{
- Lisp_Object fontset;
+ Lisp_Object fontset, elt;
fontset= FONTSET_FROM_ID (id);
- return FONTSET_ASCII (fontset);
+ elt = FONTSET_ASCII (fontset);
+ /* It is assured that ELT is always a string (i.e. fontname
+ pattern). */
+ return elt;
}
FRAME_PTR f;
struct face *face;
{
- AREF (Vfontset_table, face->fontset) = Qnil;
+ Lisp_Object fontset;
+
+ fontset = AREF (Vfontset_table, face->fontset);
+ xassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset));
+ xassert (f == XFRAME (FONTSET_FRAME (fontset)));
+ ASET (Vfontset_table, face->fontset, Qnil);
if (face->fontset < next_fontset_id)
next_fontset_id = face->fontset;
+ if (! NILP (FONTSET_DEFAULT (fontset)))
+ {
+ int id = XINT (FONTSET_ID (FONTSET_DEFAULT (fontset)));
+
+ fontset = AREF (Vfontset_table, id);
+ xassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset));
+ xassert (f == XFRAME (FONTSET_FRAME (fontset)));
+ ASET (Vfontset_table, id, Qnil);
+ if (id < next_fontset_id)
+ next_fontset_id = face->fontset;
+ }
}
struct face *face;
int c;
{
- Lisp_Object fontset;
+ Lisp_Object fontset, rfont_def;
fontset = FONTSET_FROM_ID (face->fontset);
- return (face == fontset_face (fontset, c));
+ rfont_def = fontset_font (fontset, c, NULL, -1);
+ return (VECTORP (rfont_def)
+ && INTEGERP (AREF (rfont_def, 0))
+ && face->id == XINT (AREF (rfont_def, 0)));
}
/* Return ID of face suitable for displaying character C on frame F.
- The selection of face is done based on the fontset of FACE. FACE
- must be reazlied for ASCII characters in advance. Called from the
- macro FACE_FOR_CHAR when C is not an ASCII character. */
+ FACE must be reazlied for ASCII characters in advance. Called from
+ the macro FACE_FOR_CHAR. */
int
-face_for_char (f, face, c)
+face_for_char (f, face, c, pos, object)
FRAME_PTR f;
struct face *face;
- int c;
+ int c, pos;
+ Lisp_Object object;
{
- Lisp_Object fontset, elt;
- struct face *new_face;
+ Lisp_Object fontset, charset, rfont_def;
+ int face_id;
+ int id;
+
+ if (ASCII_CHAR_P (c))
+ return face->ascii_face->id;
xassert (fontset_id_valid_p (face->fontset));
fontset = FONTSET_FROM_ID (face->fontset);
xassert (!BASE_FONTSET_P (fontset));
+ if (pos < 0)
+ id = -1;
+ else
+ {
+ charset = Fget_char_property (make_number (pos), Qcharset, object);
+ if (NILP (charset))
+ id = -1;
+ else if (CHARSETP (charset))
+ id = XINT (CHARSET_SYMBOL_ID (charset));
+ }
+ rfont_def = fontset_font (fontset, c, face, id);
+ if (VECTORP (rfont_def))
+ {
+ if (NILP (AREF (rfont_def, 0)))
+ {
+ /* We have not yet made a realized face that uses this font. */
+ int font_idx = XINT (AREF (rfont_def, 1));
- new_face = fontset_face (fontset, c);
- if (new_face)
- return new_face->id;
+ face_id = lookup_non_ascii_face (f, font_idx, face);
+ ASET (rfont_def, 0, make_number (face_id));
+ }
+ return XINT (AREF (rfont_def, 0));
+ }
- /* No face is recorded for C in the fontset of FACE. Make a new
- realized face for C that has the same fontset. */
- return lookup_face (f, face->lface, c, face);
+ if (NILP (FONTSET_NOFONT_FACE (fontset)))
+ {
+ face_id = lookup_non_ascii_face (f, -1, face);
+ FONTSET_NOFONT_FACE (fontset) = make_number (face_id);
+ }
+ return XINT (FONTSET_NOFONT_FACE (fontset));
}
Called from realize_x_face. */
int
-make_fontset_for_ascii_face (f, base_fontset_id)
+make_fontset_for_ascii_face (f, base_fontset_id, face)
FRAME_PTR f;
int base_fontset_id;
+ struct face *face;
{
Lisp_Object base_fontset, fontset, frame;
if (!BASE_FONTSET_P (base_fontset))
base_fontset = FONTSET_BASE (base_fontset);
xassert (BASE_FONTSET_P (base_fontset));
+ if (! BASE_FONTSET_P (base_fontset))
+ abort ();
}
else
base_fontset = Vdefault_fontset;
fontset = make_fontset (frame, Qnil, base_fontset);
+ {
+ Lisp_Object elt, rfont_def;
+
+ elt = FONTSET_REF (base_fontset, 0);
+ xassert (VECTORP (elt) && ASIZE (elt) > 0);
+ rfont_def = Fmake_vector (make_number (4), Qnil);
+ ASET (rfont_def, 0, make_number (face->id));
+ ASET (rfont_def, 1, make_number (face->font_info_id));
+ ASET (rfont_def, 2, AREF (elt, 0));
+ ASET (rfont_def, 3, build_string (face->font_name));
+ elt = Fmake_vector (make_number (4), Qnil);
+ ASET (elt, 0, make_number (charset_ordered_list_tick));
+ ASET (elt, 1, make_number (charset_ascii));
+ ASET (elt, 2, rfont_def);
+ ASET (elt, 3, rfont_def);
+ char_table_set_range (fontset, 0, 127, elt);
+ }
return XINT (FONTSET_ID (fontset));
}
-/* Return FONT-SPEC recorded in the fontset of FACE for character C.
- If FACE is null, or the fontset doesn't contain information about
- C, get the font name pattern from the default fontset. Called from
- choose_face_font. */
-
-Lisp_Object
-fontset_font_pattern (f, face, c)
- FRAME_PTR f;
- struct face *face;
- int c;
-{
- Lisp_Object fontset, base, elt;
- int id = face ? face->fontset : -1;
-
- if (id >= 0)
- {
- fontset = FONTSET_FROM_ID (id);
- xassert (!BASE_FONTSET_P (fontset));
- base = FONTSET_BASE (fontset);
- }
- else
- {
- base = Vdefault_fontset;
- }
-
- FONTSET_REF (base, c, elt);
- if (face && ! NILP (elt))
- {
- Lisp_Object slot;
-
- slot = Fassoc (elt, FONTSET_FACE_ALIST (fontset));
- if (CONSP (slot))
- XSETCDR (slot, make_number (face->id));
- FONTSET_FACE_ALIST (fontset)
- = Fcons (Fcons (elt, make_number (face->id)),
- FONTSET_FACE_ALIST (fontset));
- }
- return elt;
-}
-
-
#if defined(WINDOWSNT) && defined (_MSC_VER)
#pragma optimize("", off)
#endif
/* Load a font named FONTNAME on frame F. Return a pointer to the
struct font_info of the loaded font. If loading fails, return
- NULL. */
+ NULL. CHARSET is an ID of charset to encode characters for this
+ font. If it is -1, find one from Vfont_encoding_alist. */
struct font_info *
-fs_load_font (f, fontname)
+fs_load_font (f, fontname, charset)
FRAME_PTR f;
char *fontname;
+ int charset;
{
- Lisp_Object tail, elt;
struct font_info *fontp;
if (!fontname)
/* No way to get fontname. */
- return 0;
+ return NULL;
fontp = (*load_font_func) (f, fontname, 0);
- if (!fontp)
- return NULL;
+ if (! fontp || fontp->charset >= 0)
+ return fontp;
- /* Fill in members (charset, vertical_centering, encoding, etc) of
- font_info structure that are not set by (*load_font_func). */
- for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail))
- {
- elt = XCAR (tail);
- if (STRINGP (XCAR (elt)) && CHARSETP (XCDR (elt))
- && fast_c_string_match_ignore_case (XCAR (elt), fontname) >= 0)
- {
- fontp->charset = CHARSET_SYMBOL_ID (XCDR (elt));
- break;
- }
- }
- if (! CONSP (tail))
- return NULL;
+ fontname = fontp->full_name;
- fontp->vertical_centering
- = (STRINGP (Vvertical_centering_font_regexp)
- && (fast_c_string_match_ignore_case
- (Vvertical_centering_font_regexp, fontp->full_name) >= 0));
+ if (charset < 0)
+ {
+ Lisp_Object charset_symbol;
+ charset_symbol = find_font_encoding (fontname);
+ if (CONSP (charset_symbol))
+ charset_symbol = XCAR (charset_symbol);
+ charset = XINT (CHARSET_SYMBOL_ID (charset_symbol));
+ }
+ fontp->charset = charset;
+ fontp->vertical_centering = 0;
fontp->font_encoder = NULL;
- if (find_ccl_program_func)
- (*find_ccl_program_func) (fontp);
+ if (charset != charset_ascii)
+ {
+ fontp->vertical_centering
+ = (STRINGP (Vvertical_centering_font_regexp)
+ && (fast_c_string_match_ignore_case
+ (Vvertical_centering_font_regexp, fontname) >= 0));
+
+ if (find_ccl_program_func)
+ (*find_ccl_program_func) (fontp);
+ }
return fontp;
}
#endif
\f
+/* Return ENCODING or a cons of ENCODING and REPERTORY of the font
+ FONTNAME. ENCODING is a charset symbol that specifies the encoding
+ of the font. REPERTORY is a charset symbol or nil. */
+
+
+static Lisp_Object
+find_font_encoding (fontname)
+ char *fontname;
+{
+ Lisp_Object tail, elt;
+
+ for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail))
+ {
+ elt = XCAR (tail);
+ if (CONSP (elt)
+ && STRINGP (XCAR (elt))
+ && fast_c_string_match_ignore_case (XCAR (elt), fontname) >= 0
+ && (SYMBOLP (XCDR (elt))
+ ? CHARSETP (XCDR (elt))
+ : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt)))))
+ return (XCDR (elt));
+ }
+ /* We don't know the encoding of this font. Let's assume `ascii'. */
+ return Qascii;
+}
+
+
/* Cache data used by fontset_pattern_regexp. The car part is a
pattern string containing at least one wild card, the cdr part is
the corresponding regular expression. */
static Lisp_Object Vcached_fontset_data;
-#define CACHED_FONTSET_NAME (XSTRING (XCAR (Vcached_fontset_data))->data)
+#define CACHED_FONTSET_NAME (SDATA (XCAR (Vcached_fontset_data)))
#define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
/* If fontset name PATTERN contains any wild card, return regular
fontset_pattern_regexp (pattern)
Lisp_Object pattern;
{
- if (!index (XSTRING (pattern)->data, '*')
- && !index (XSTRING (pattern)->data, '?'))
+ if (!index (SDATA (pattern), '*')
+ && !index (SDATA (pattern), '?'))
/* PATTERN does not contain any wild cards. */
return Qnil;
if (!CONSP (Vcached_fontset_data)
- || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME))
+ || strcmp (SDATA (pattern), CACHED_FONTSET_NAME))
{
/* We must at first update the cached data. */
- char *regex = (char *) alloca (XSTRING (pattern)->size * 2 + 3);
+ char *regex = (char *) alloca (SCHARS (pattern) * 2 + 3);
char *p0, *p1 = regex;
/* Convert "*" to ".*", "?" to ".". */
*p1++ = '^';
- for (p0 = (char *) XSTRING (pattern)->data; *p0; p0++)
+ for (p0 = (char *) SDATA (pattern); *p0; p0++)
{
if (*p0 == '*')
{
*p1++ = '$';
*p1++ = 0;
- Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data),
+ Vcached_fontset_data = Fcons (build_string (SDATA (pattern)),
build_string (regex));
}
if (!regexpp)
{
tem = Frassoc (name, Vfontset_alias_alist);
+ if (NILP (tem))
+ tem = Fassoc (name, Vfontset_alias_alist);
if (CONSP (tem) && STRINGP (XCAR (tem)))
name = XCAR (tem);
else
|| !BASE_FONTSET_P (fontset))
continue;
- this_name = XSTRING (FONTSET_NAME (fontset))->data;
+ this_name = SDATA (FONTSET_NAME (fontset));
if (regexpp
? fast_c_string_match_ignore_case (name, this_name) >= 0
- : !strcmp (XSTRING (name)->data, this_name))
+ : !strcmp (SDATA (name), this_name))
return i;
}
return -1;
CHECK_STRING (pattern);
- if (XSTRING (pattern)->size == 0)
+ if (SCHARS (pattern) == 0)
return Qnil;
id = fs_query_fontset (pattern, !NILP (regexpp));
|| !BASE_FONTSET_P (fontset)
|| !EQ (frame, FONTSET_FRAME (fontset)))
continue;
- name = XSTRING (FONTSET_NAME (fontset))->data;
+ name = SDATA (FONTSET_NAME (fontset));
- if (!NILP (regexp)
+ if (STRINGP (regexp)
? (fast_c_string_match_ignore_case (regexp, name) < 0)
- : strcmp (XSTRING (pattern)->data, name))
+ : strcmp (SDATA (pattern), name))
continue;
val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val);
}
-/* Free all realized fontsets whose base fontset is BASE. */
+/* Free all realized fontsets whose base fontset is BASE. */
static void
free_realized_fontsets (base)
Lisp_Object base;
{
+#if 0
int id;
-#if 0
/* For the moment, this doesn't work because free_realized_face
doesn't remove FACE from a cache. Until we find a solution, we
suppress this code, and simply use Fclear_face_cache even though
FRAME_PTR f = XFRAME (FONTSET_FRAME (this));
int face_id = XINT (XCDR (XCAR (tail)));
struct face *face = FACE_FROM_ID (f, face_id);
-
+
/* Face THIS itself is also freed by the following call. */
free_realized_face (f, face);
}
CHECK_STRING (name);
id = fs_query_fontset (name, 0);
if (id < 0)
- error ("Fontset `%s' does not exist", XSTRING (name)->data);
+ error ("Fontset `%s' does not exist", SDATA (name));
return FONTSET_FROM_ID (id);
}
-DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0,
- doc: /* Modify fontset NAME to use FONT-SPEC for characters of CHARSETS.
+static void
+accumulate_script_ranges (arg, range, val)
+ Lisp_Object arg, range, val;
+{
+ if (EQ (XCAR (arg), val))
+ {
+ if (CONSP (range))
+ XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg)));
+ else
+ XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg)));
+ }
+}
+
+
+/* Return an ASCII font name generated from fontset name NAME and
+ ASCII font specification ASCII_SPEC. NAME is a string conforming
+ to XLFD. ASCII_SPEC is a vector:
+ [FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY]. */
+
+static INLINE Lisp_Object
+generate_ascii_font_name (name, ascii_spec)
+ Lisp_Object name, ascii_spec;
+{
+ Lisp_Object vec;
+ int i;
+
+ vec = split_font_name_into_vector (name);
+ for (i = FONT_SPEC_FAMILY_INDEX; i <= FONT_SPEC_ADSTYLE_INDEX; i++)
+ if (! NILP (AREF (ascii_spec, i)))
+ ASET (vec, 1 + i, AREF (ascii_spec, i));
+ if (! NILP (AREF (ascii_spec, FONT_SPEC_REGISTRY_INDEX)))
+ ASET (vec, 12, AREF (ascii_spec, FONT_SPEC_REGISTRY_INDEX));
+ return build_font_name_from_vector (vec);
+}
+
+/* Variables referred in set_fontset_font. They are set before
+ map_charset_chars is called in Fset_fontset_font. */
+static Lisp_Object font_def_arg, add_arg;
+static int from_arg, to_arg;
+
+/* Callback function for map_charset_chars in Fset_fontset_font. In
+ FONTSET, set font_def_arg in a fashion specified by add_arg for
+ characters in RANGE while ignoring the range between from_arg and
+ to_arg. */
+
+static void
+set_fontset_font (fontset, range)
+ Lisp_Object fontset, range;
+{
+ if (from_arg < to_arg)
+ {
+ int from = XINT (XCAR (range)), to = XINT (XCDR (range));
+
+ if (from < from_arg)
+ {
+ if (to > to_arg)
+ {
+ Lisp_Object range2;
+
+ range2 = Fcons (make_number (to_arg), XCDR (range));
+ FONTSET_ADD (fontset, range, font_def_arg, add_arg);
+ to = to_arg;
+ }
+ if (to > from_arg)
+ range = Fcons (XCAR (range), make_number (from_arg));
+ }
+ else if (to <= to_arg)
+ return;
+ else
+ {
+ if (from < to_arg)
+ range = Fcons (make_number (to_arg), XCDR (range));
+ }
+ }
+ FONTSET_ADD (fontset, range, font_def_arg, add_arg);
+}
+
+
+DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 5, 0,
+ doc: /*
+Modify fontset NAME to use FONT-SPEC for TARGET characters.
-CHARSET may be a cons; (FROM . TO), where FROM and TO are characters.
+TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
In that case, use FONT-SPEC for all characters in the range FROM and
TO (inclusive).
-FONT-SPEC is be a vector; [ FAMILY WEIGHT SLANT WIDTH ADSTYLE REGISTRY ]
+TARGET may be a script name symbol. In that case, use FONT-SPEC for
+all characters that belong to the script.
-FONT-SPEC may be a cons; (FAMILY . REGISTRY), where FAMILY is a family
-name of a font, REGSITRY is a registry name of a font.
+TARGET may be a charset. In that case, use FONT-SPEC for all
+characters in the charset.
-FONT-SPEC may be a font name string. */)
- (name, charset, font_spec, frame)
- Lisp_Object name, charset, font_spec, frame;
+TARGET may be nil. In that case, use FONT-SPEC for any characters for
+that no FONT-SPEC is specified.
+
+FONT-SPEC may be:
+ * A vector [ FAMILY WEIGHT SLANT WIDTH ADSTYLE REGISTRY ].
+ See the documentation of `set-face-attribute' for the detail of
+ these vector elements;
+ * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
+ REGISTRY is a font registry name;
+ * A font name string.
+
+Optional 4th argument FRAME, if non-nil, is a frame. This argument is
+kept for backward compatibility and has no meaning.
+
+Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
+to the font specifications for TARGET previously set. If it is
+`prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
+appended. By default, FONT-SPEC overrides the previous settings. */)
+ (name, target, font_spec, frame, add)
+ Lisp_Object name, target, font_spec, frame, add;
{
Lisp_Object fontset;
- Lisp_Object family, registry;
- int charset_id;
+ Lisp_Object font_def, registry;
+ Lisp_Object encoding, repertory;
+ Lisp_Object range_list;
+ struct charset *charset = NULL;
fontset = check_fontset_name (name);
+ /* The arg FRAME is kept for backward compatibility. We only check
+ the validity. */
+ if (!NILP (frame))
+ CHECK_LIVE_FRAME (frame);
+
if (VECTORP (font_spec))
{
- int i;
- Lisp_Object val;
+ int j;
+
+ if (ASIZE (font_spec) != FONT_SPEC_MAX_INDEX)
+ args_out_of_range (make_number (FONT_SPEC_MAX_INDEX),
+ make_number (ASIZE (font_spec)));
font_spec = Fcopy_sequence (font_spec);
- for (i = 0; i < 5; i++)
- {
- val = Faref (font_spec, make_number (i));
- if (! NILP (val))
- {
- CHECK_STRING (val);
- ASET (font_spec, i, Fdowncase (val));
- }
- }
- val = Faref (font_spec, make_number (5));
- CHECK_STRING (val);
- ASET (font_spec, 5, Fdowncase (val));
+ for (j = 0; j < FONT_SPEC_MAX_INDEX - 1; j++)
+ if (! NILP (AREF (font_spec, j)))
+ {
+ CHECK_STRING (AREF (font_spec, j));
+ ASET (font_spec, j, Fdowncase (AREF (font_spec, j)));
+ }
+ /* REGISTRY should not be omitted. */
+ CHECK_STRING (AREF (font_spec, FONT_SPEC_REGISTRY_INDEX));
+ registry = Fdowncase (AREF (font_spec, FONT_SPEC_REGISTRY_INDEX));
+ ASET (font_spec, FONT_SPEC_REGISTRY_INDEX, registry);
+
}
- else if (STRINGP (font_spec))
- font_spec = Fdowncase (font_spec);
else if (CONSP (font_spec))
{
- CHECK_CONS (font_spec);
+ Lisp_Object family;
+
family = XCAR (font_spec);
registry = XCDR (font_spec);
- font_spec = Fmake_vector (make_number (6), Qnil);
- if (!NILP (family))
+
+ if (! NILP (family))
{
CHECK_STRING (family);
- ASET (font_spec, 0, Fdowncase (family));
+ family = Fdowncase (family);
}
CHECK_STRING (registry);
- ASET (font_spec, 5, Fdowncase (registry));
+ registry = Fdowncase (registry);
+ font_spec = Fmake_vector (make_number (FONT_SPEC_MAX_INDEX), Qnil);
+ ASET (font_spec, FONT_SPEC_FAMILY_INDEX, family);
+ ASET (font_spec, FONT_SPEC_REGISTRY_INDEX, registry);
+ }
+ else
+ {
+ CHECK_STRING (font_spec);
+ font_spec = Fdowncase (font_spec);
}
- if (SYMBOLP (charset))
+ if (STRINGP (font_spec))
+ encoding = find_font_encoding ((char *) SDATA (font_spec));
+ else
+ encoding = find_font_encoding ((char *) SDATA (registry));
+ if (SYMBOLP (encoding))
{
- CHECK_CHARSET (charset);
+ CHECK_CHARSET (encoding);
+ encoding = repertory = CHARSET_SYMBOL_ID (encoding);
}
else
+ {
+ repertory = XCDR (encoding);
+ encoding = XCAR (encoding);
+ CHECK_CHARSET (encoding);
+ encoding = CHARSET_SYMBOL_ID (encoding);
+ if (! NILP (repertory) && SYMBOLP (repertory))
+ {
+ CHECK_CHARSET (repertory);
+ repertory = CHARSET_SYMBOL_ID (repertory);
+ }
+ }
+ font_def = Fmake_vector (make_number (3), font_spec);
+ ASET (font_def, 1, encoding);
+ ASET (font_def, 2, repertory);
+
+ if (CHARACTERP (target))
+ range_list = Fcons (Fcons (target, target), Qnil);
+ else if (CONSP (target))
{
Lisp_Object from, to;
- /* CHARSET should be (FROM . TO). */
- from = Fcar (charset);
- to = Fcdr (charset);
+ from = Fcar (target);
+ to = Fcdr (target);
CHECK_CHARACTER (from);
CHECK_CHARACTER (to);
+ range_list = Fcons (target, Qnil);
}
+ else if (SYMBOLP (target) && !NILP (target))
+ {
+ Lisp_Object script_list;
+ Lisp_Object val;
- /* The arg FRAME is kept for backward compatibility. We only check
- the validity. */
- if (!NILP (frame))
- CHECK_LIVE_FRAME (frame);
+ range_list = Qnil;
+ script_list = XCHAR_TABLE (Vchar_script_table)->extras[0];
+ if (! NILP (Fmemq (target, script_list)))
+ {
+ val = Fcons (target, Qnil);
+ map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table,
+ val);
+ range_list = XCDR (val);
+ }
+ if (CHARSETP (target))
+ {
+ if (EQ (target, Qascii))
+ {
+ if (VECTORP (font_spec))
+ font_spec = generate_ascii_font_name (FONTSET_NAME (fontset),
+ font_spec);
+ FONTSET_ASCII (fontset) = font_spec;
+ range_list = Fcons (Fcons (make_number (0), make_number (127)),
+ Qnil);
+ }
+ else
+ {
+ CHECK_CHARSET_GET_CHARSET (target, charset);
+ }
+ }
+ else if (NILP (range_list))
+ error ("Invalid script or charset name: %s",
+ SDATA (SYMBOL_NAME (target)));
+ }
+ else if (NILP (target))
+ range_list = Fcons (Qnil, Qnil);
+ else
+ error ("Invalid target for setting a font");
- FONTSET_SET (fontset, charset, font_spec);
+
+ if (charset)
+ {
+ font_def_arg = font_def;
+ add_arg = add;
+ if (NILP (range_list))
+ from_arg = to_arg = 0;
+ else
+ from_arg = XINT (XCAR (XCAR (range_list))),
+ to_arg = XINT (XCDR (XCAR (range_list)));
+
+ map_charset_chars (set_fontset_font, Qnil, fontset, charset,
+ CHARSET_MIN_CODE (charset),
+ CHARSET_MAX_CODE (charset));
+ }
+ for (; CONSP (range_list); range_list = XCDR (range_list))
+ FONTSET_ADD (fontset, XCAR (range_list), font_def, add);
/* Free all realized fontsets whose base is FONTSET. This way, the
specified character(s) are surely redisplayed by a correct
DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0,
doc: /* Create a new fontset NAME from font information in FONTLIST.
-FONTLIST is an alist of charsets vs corresponding font specifications.
-Each element of FONTLIST has the form (CHARSET . FONT-SPEC), where
-a character of CHARSET is displayed by a font that matches FONT-SPEC.
+FONTLIST is an alist of scripts vs the corresponding font specification list.
+Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
+character of SCRIPT is displayed by a font that matches one of
+FONT-SPEC.
-FONT-SPEC is a vector [ FAMILY WEIGHT SLANT WIDTH ADSTYLE REGISTRY ], where
-FAMILY is a string specifying the font family,
-WEIGHT is a string specifying the weight of the font,
-SLANT is a string specifying the slant of the font,
-WIDTH is a string specifying the width of the font,
-ADSTYLE is a string specifying the adstyle of the font,
-REGISTRY is a string specifying the charset-registry of the font.
+SCRIPT is a symbol that appears in the first extra slot of the
+char-table `char-script-table'.
-See also the documentation of `set-face-attribute' for the detail of
-these vector elements.
-
-FONT-SPEC may be a font name (string). */)
+FONT-SPEC is a vector, a cons, or a string. See the documentation of
+`set-fontset-font' for the meaning. */)
(name, fontlist)
Lisp_Object name, fontlist;
{
- Lisp_Object fontset, ascii_font;
- Lisp_Object tem, tail;
+ Lisp_Object fontset;
+ Lisp_Object val;
+ int id;
CHECK_STRING (name);
CHECK_LIST (fontlist);
- name = Fdowncase (name);
- tem = Fquery_fontset (name, Qnil);
- if (! NILP (tem))
- free_realized_fontsets (tem);
+ id = fs_query_fontset (name, 0);
+ if (id < 0)
+ {
+ name = Fdowncase (name);
+ val = split_font_name_into_vector (name);
+ if (NILP (val) || NILP (AREF (val, 12)) || NILP (AREF (val, 13)))
+ error ("Fontset name must be in XLFD format");
+ if (strcmp (SDATA (AREF (val, 12)), "fontset"))
+ error ("Registry field of fontset name must be \"fontset\"");
+ Vfontset_alias_alist
+ = Fcons (Fcons (name,
+ concat2 (concat2 (AREF (val, 12), build_string ("-")),
+ AREF (val, 13))),
+ Vfontset_alias_alist);
+ ASET (val, 12, build_string ("iso8859-1"));
+ fontset = make_fontset (Qnil, name, Qnil);
+ FONTSET_ASCII (fontset) = build_font_name_from_vector (val);
+ }
+ else
+ {
+ fontset = FONTSET_FROM_ID (id);;
+ free_realized_fontsets (fontset);
+ Fset_char_table_range (fontset, Qt, Qnil);
+ }
- fontset = make_fontset (Qnil, name, Qnil);
+ for (; ! NILP (fontlist); fontlist = Fcdr (fontlist))
+ {
+ Lisp_Object elt, script;
+
+ elt = Fcar (fontlist);
+ script = Fcar (elt);
+ elt = Fcdr (elt);
+ if (CONSP (elt) && (NILP (XCDR (elt)) || CONSP (XCDR (elt))))
+ for (; CONSP (elt); elt = XCDR (elt))
+ Fset_fontset_font (name, script, XCAR (elt), Qnil, Qappend);
+ else
+ Fset_fontset_font (name, script, elt, Qnil, Qappend);
+ }
+ return name;
+}
- /* Check the validity of FONTLIST. */
- ascii_font = Fcdr (Fassq (Qascii, fontlist));
- if (NILP (ascii_font))
- error ("No ascii font specified");
- if (! STRINGP (ascii_font))
- ascii_font = generate_ascii_font (name, ascii_font);
- fontlist = Fcopy_sequence (fontlist);
- for (tail = fontlist; ! NILP (tail); tail = Fcdr (tail))
- Fset_fontset_font (name, Fcar (Fcar (tail)), Fcdr (Fcar (tail)), Qnil);
+/* Alist of automatically created fontsets. Each element is a cons
+ (FONTNAME . FONTSET-ID). */
+static Lisp_Object auto_fontset_alist;
- FONTSET_ASCII (fontset) = ascii_font;
+int
+new_fontset_from_font_name (Lisp_Object fontname)
+{
+ Lisp_Object val;
+ Lisp_Object name;
+ Lisp_Object vec;
+ int id;
- return name;
+ fontname = Fdowncase (fontname);
+ val = Fassoc (fontname, auto_fontset_alist);
+ if (CONSP (val))
+ return XINT (XCDR (val));
+
+ vec = split_font_name_into_vector (fontname);
+ if ( NILP (vec))
+ vec = Fmake_vector (make_number (14), build_string (""));
+ ASET (vec, 12, build_string ("fontset"));
+ if (NILP (auto_fontset_alist))
+ {
+ ASET (vec, 13, build_string ("startup"));
+ name = build_font_name_from_vector (vec);
+ }
+ else
+ {
+ char temp[20];
+ int len = XINT (Flength (auto_fontset_alist));
+
+ sprintf (temp, "auto%d", len);
+ ASET (vec, 13, build_string (temp));
+ name = build_font_name_from_vector (vec);
+ }
+ name = Fnew_fontset (name, list2 (list2 (Qascii, fontname),
+ list2 (Fcons (make_number (0),
+ make_number (MAX_CHAR)),
+ fontname)));
+ id = fs_query_fontset (name, 0);
+ auto_fontset_alist
+ = Fcons (Fcons (fontname, make_number (id)), auto_fontset_alist);
+ return id;
}
if (!query_font_func)
error ("Font query function is not supported");
- fontp = (*query_font_func) (f, XSTRING (name)->data);
+ fontp = (*query_font_func) (f, SDATA (name));
if (!fontp)
return Qnil;
struct window *w;
struct frame *f;
struct face *face;
+ Lisp_Object charset, rfont_def;
+ int charset_id;
CHECK_NUMBER_COERCE_MARKER (position);
pos = XINT (position);
w = XWINDOW (window);
f = XFRAME (w->frame);
face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0);
- face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c);
face = FACE_FROM_ID (f, face_id);
- return (face->font && face->font_name
- ? build_string (face->font_name)
+ charset = Fget_char_property (position, Qcharset, Qnil);
+ if (CHARSETP (charset))
+ charset_id = XINT (CHARSET_SYMBOL_ID (charset));
+ else
+ charset_id = -1;
+ rfont_def = fontset_font (FONTSET_FROM_ID (face->fontset),
+ c, face, charset_id);
+ return (VECTORP (rfont_def) && STRINGP (AREF (rfont_def, 3))
+ ? AREF (rfont_def, 3)
: Qnil);
}
-/* Called from Ffontset_info via map_char_table on each leaf of
- fontset. ARG is a list (LAST FONT-INFO ...), where LAST is `(last
- ARG)' and FONT-INFOs have this form:
- (CHAR FONT-SPEC) or ((FROM . TO) FONT-SPEC)
- The current leaf is indexed by CHARACTER and has value ELT. This
- function add the information of the current leaf to ARG by
- appending a new element or modifying the last element.. */
+DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0,
+ doc: /* Return information about a fontset FONTSET on frame FRAME.
+The value is a char-table of which elements has this form.
-static void
-accumulate_font_info (arg, character, elt)
- Lisp_Object arg, character, elt;
-{
- Lisp_Object last, last_char, last_elt;
+ ((FONT-PATTERN OPENED-FONT ...) ...)
- if (!CONSP (elt) && !SINGLE_BYTE_CHAR_P (XINT (character)))
- FONTSET_REF (Vdefault_fontset, XINT (character), elt);
- if (!CONSP (elt))
- return;
- last = XCAR (arg);
- last_char = XCAR (XCAR (last));
- last_elt = XCAR (XCDR (XCAR (last)));
- elt = XCDR (elt);
- if (!NILP (Fequal (elt, last_elt)))
- {
- struct charset *this_charset = CHAR_CHARSET (XINT (character));
+FONT-PATTERN is a vector:
- if (CONSP (last_char)) /* LAST_CHAR == (FROM . TO) */
- {
- if (this_charset == CHAR_CHARSET (XINT (XCAR (last_char))))
- {
- XSETCDR (last_char, character);
- return;
- }
- }
- else if (XINT (last_char) == XINT (character))
- return;
- else if (this_charset == CHAR_CHARSET (XINT (last_char)))
- {
- XSETCAR (XCAR (last), Fcons (last_char, character));
- return;
- }
- }
- XSETCDR (last, Fcons (Fcons (character, Fcons (elt, Qnil)), Qnil));
- XSETCAR (arg, XCDR (last));
-}
+ [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ]
+or a string of font name pattern.
-DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0,
- doc: /* Return information about a fontset named NAME on frame FRAME.
-The value is a vector:
- [ SIZE HEIGHT ((CHARSET-OR-RANGE FONT-SPEC OPENED ...) ...) ],
-where,
- SIZE is the maximum bound width of ASCII font in the fontset,
- HEIGHT is the maximum bound height of ASCII font in the fontset,
- CHARSET-OR-RANGE is a charset or a cons of two characters specifying
- the range of characters.
- FONT-SPEC is a fontname pattern string or a vector
- [ FAMILY WEIGHT SLANT ADSTYLE REGISTRY ].
- See the documentation of `new-fontset' for the meanings those elements.
- OPENEDs are names of fonts actually opened.
-If the ASCII font is not yet opened, SIZE and HEIGHT are 0.
-If FRAME is omitted, it defaults to the currently selected frame. */)
- (name, frame)
- Lisp_Object name, frame;
+OPENED-FONT is a name of a font actually opened.
+
+The char-table has one extra slot. The value is a char-table
+containing the information about the derived fonts from the default
+fontset. The format is the same as abobe. */)
+ (fontset, frame)
+ Lisp_Object fontset, frame;
{
- Lisp_Object fontset;
FRAME_PTR f;
- Lisp_Object val, tail, elt;
- Lisp_Object *realized;
- struct font_info *fontp = NULL;
- int n_realized = 0;
- int i;
+ Lisp_Object *realized[2], fontsets[2], tables[2];
+ Lisp_Object val, elt;
+ int c, i, j, k;
(*check_window_system_func) ();
- fontset = check_fontset_name (name);
+ fontset = check_fontset_name (fontset);
if (NILP (frame))
frame = selected_frame;
CHECK_LIVE_FRAME (frame);
f = XFRAME (frame);
- /* Recode realized fontsets whose base is FONTSET in the table
- `realized'. */
- realized = (Lisp_Object *) alloca (sizeof (Lisp_Object)
- * ASIZE (Vfontset_table));
- for (i = 0; i < ASIZE (Vfontset_table); i++)
+ /* Recode fontsets realized on FRAME from the base fontset FONTSET
+ in the table `realized'. */
+ realized[0] = (Lisp_Object *) alloca (sizeof (Lisp_Object)
+ * ASIZE (Vfontset_table));
+ for (i = j = 0; i < ASIZE (Vfontset_table); i++)
{
elt = FONTSET_FROM_ID (i);
if (!NILP (elt)
- && EQ (FONTSET_BASE (elt), fontset))
- realized[n_realized++] = elt;
+ && EQ (FONTSET_BASE (elt), fontset)
+ && EQ (FONTSET_FRAME (elt), frame))
+ realized[0][j++] = elt;
}
+ realized[0][j] = Qnil;
- /* Accumulate information of the fontset in VAL. The format is
- (LAST FONT-INFO FONT-INFO ...), where FONT-INFO is (CHAR-OR-RANGE
- FONT-SPEC). See the comment for accumulate_font_info for the
- detail. */
- val = Fcons (Fcons (Qascii, Fcons (FONTSET_ASCII (fontset), Qnil)), Qnil);
- val = Fcons (val, val);
- for (i = 128; i <= MAX_CHAR; )
+ realized[1] = (Lisp_Object *) alloca (sizeof (Lisp_Object)
+ * ASIZE (Vfontset_table));
+ for (i = j = 0; ! NILP (realized[0][i]); i++)
{
- Lisp_Object elt;
- int from, to;
-
- elt = char_table_ref_and_range (fontset, i, &from, &to);
+ elt = FONTSET_DEFAULT (realized[0][i]);
if (! NILP (elt))
- {
- elt = Fcons (Fcons (make_number (from), make_number (to)),
- Fcons (elt, Qnil));
- XSETCDR (XCAR (val), Fcons (elt, Qnil));
- XSETCAR (val, XCDR (XCAR (val)));
- }
- i = to + 1;
+ realized[1][j++] = elt;
}
+ realized[1][j] = Qnil;
- for (tail = FONTSET_CHARSET_ALIST (fontset);
- CONSP (tail); tail = XCDR (tail))
- {
- elt = XCAR (tail);
- elt = Fcons (XCAR (elt), Fcons (XCDR (elt), Qnil));
- XSETCDR (XCAR (val), Fcons (elt, Qnil));
- XSETCAR (val, XCDR (XCAR (val)));
- }
-
- val = XCDR (val);
+ tables[0] = Fmake_char_table (Qfontset_info, Qnil);
+ tables[1] = Fmake_char_table (Qnil, Qnil);
+ XCHAR_TABLE (tables[0])->extras[0] = tables[1];
+ fontsets[0] = fontset;
+ fontsets[1] = Vdefault_fontset;
- /* If fonts are opened for FONT-SPEC, append the names of the fonts to
- FONT-SPEC. */
- for (tail = val; CONSP (tail); tail = XCDR (tail))
+ /* Accumulate information of the fontset in TABLE. The format of
+ each element is ((FONT-SPEC OPENED-FONT ...) ...). */
+ for (k = 0; k <= 1; k++)
{
- int c;
-
- elt = XCAR (tail);
- for (i = 0; i < n_realized; i++)
+ for (c = 0; c <= MAX_CHAR; )
{
- int face_id;
- struct face *face;
- Lisp_Object face_list, fontname;
+ int from, to;
- for (face_list = FONTSET_FACE_ALIST (realized[i]);
- CONSP (face_list); face_list = XCDR (face_list))
+ if (c <= MAX_5_BYTE_CHAR)
{
- int face_id = XINT (XCDR (XCAR (face_list)));
- struct face *face = FACE_FROM_ID (f, face_id);
+ val = char_table_ref_and_range (fontsets[k], c, &from, &to);
+ if (to > MAX_5_BYTE_CHAR)
+ to = MAX_5_BYTE_CHAR;
+ }
+ else
+ {
+ val = FONTSET_FALLBACK (fontsets[k]);
+ to = MAX_CHAR;
+ }
+ if (VECTORP (val))
+ {
+ Lisp_Object alist;
+
+ /* At first, set ALIST to ((FONT-SPEC) ...). */
+ for (alist = Qnil, i = 0; i < ASIZE (val); i++)
+ alist = Fcons (Fcons (AREF (AREF (val, i), 0), Qnil), alist);
+ alist = Fnreverse (alist);
- if (face->font && face->font_name)
+ /* Then store opend font names to cdr of each elements. */
+ for (i = 0; ! NILP (realized[k][i]); i++)
{
- fontname = build_string (face->font_name);
- if (NILP (Fmember (fontname, XCDR (XCDR (elt)))))
- XSETCDR (XCDR (elt), Fcons (fontname, XCDR (XCDR (elt))));
+ if (c <= MAX_5_BYTE_CHAR)
+ val = FONTSET_REF (realized[k][i], c);
+ else
+ val = FONTSET_FALLBACK (realized[k][i]);
+ if (! VECTORP (val))
+ continue;
+ /* VAL is [int int ?
+ [FACE-ID FONT-INDEX FONT-DEF FONT-NAME] ...].
+ If a font of an element is already opened,
+ FONT-NAME is the name of a opened font. */
+ for (j = 3; j < ASIZE (val); j++)
+ if (STRINGP (AREF (AREF (val, j), 3)))
+ {
+ Lisp_Object font_idx;
+
+ font_idx = AREF (AREF (val, j), 1);
+ elt = Fassq (AREF (AREF (AREF (val, j), 2), 0), alist);
+ if (CONSP (elt)
+ && NILP (Fmemq (font_idx, XCDR(elt))))
+ nconc2 (elt, Fcons (font_idx, Qnil));
+ }
}
+ for (val = alist; CONSP (val); val = XCDR (val))
+ for (elt = XCDR (XCAR (val)); CONSP (elt); elt = XCDR (elt))
+ {
+ struct font_info *font_info
+ = (*get_font_info_func) (f, XINT (XCAR (elt)));
+ XSETCAR (elt, build_string (font_info->full_name));
+ }
+
+ /* Store ALIST in TBL for characters C..TO. */
+ if (c <= MAX_5_BYTE_CHAR)
+ char_table_set_range (tables[k], c, to, alist);
+ else
+ XCHAR_TABLE (tables[k])->defalt = alist;
}
+ c = to + 1;
}
}
- elt = XCDR (XCDR (XCAR (val)));
- if (CONSP (elt))
- fontp = (*query_font_func) (f, XSTRING (XCAR (elt))->data);
- val = Fmake_vector (make_number (3), val);
- AREF (val, 0) = fontp ? make_number (fontp->size) : make_number (0);
- AREF (val, 1) = fontp ? make_number (fontp->height) : make_number (0);
- return val;
+ return tables[0];
}
+
DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 2, 0,
doc: /* Return a font name pattern for character CH in fontset NAME.
If NAME is t, find a font name pattern in the default fontset. */)
CHECK_CHARACTER (ch);
c = XINT (ch);
- FONTSET_REF (fontset, c, elt);
- return elt;
+ elt = FONTSET_REF (fontset, c);
+ return Fcopy_sequence (elt);
}
DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0,
return list;
}
+
+#ifdef FONTSET_DEBUG
+
+Lisp_Object
+dump_fontset (fontset)
+ Lisp_Object fontset;
+{
+ Lisp_Object vec;
+
+ vec = Fmake_vector (make_number (3), Qnil);
+ ASET (vec, 0, FONTSET_ID (fontset));
+
+ if (BASE_FONTSET_P (fontset))
+ {
+ ASET (vec, 1, FONTSET_NAME (fontset));
+ }
+ else
+ {
+ Lisp_Object frame;
+
+ frame = FONTSET_FRAME (fontset);
+ if (FRAMEP (frame))
+ {
+ FRAME_PTR f = XFRAME (frame);
+
+ if (FRAME_LIVE_P (f))
+ ASET (vec, 1, f->name);
+ else
+ ASET (vec, 1, Qt);
+ }
+ if (!NILP (FONTSET_DEFAULT (fontset)))
+ ASET (vec, 2, FONTSET_ID (FONTSET_DEFAULT (fontset)));
+ }
+ return vec;
+}
+
+DEFUN ("fontset-list-all", Ffontset_list_all, Sfontset_list_all, 0, 0, 0,
+ doc: /* Return a brief summary of all fontsets for debug use. */)
+ ()
+{
+ Lisp_Object val;
+ int i;
+
+ for (i = 0, val = Qnil; i < ASIZE (Vfontset_table); i++)
+ if (! NILP (AREF (Vfontset_table, i)))
+ val = Fcons (dump_fontset (AREF (Vfontset_table, i)), val);
+ return (Fnreverse (val));
+}
+#endif /* FONTSET_DEBUG */
+
void
syms_of_fontset ()
{
/* Window system initializer should have set proper functions. */
abort ();
- Qfontset = intern ("fontset");
- staticpro (&Qfontset);
- Fput (Qfontset, Qchar_table_extra_slots, make_number (7));
+ DEFSYM (Qfontset, "fontset");
+ Fput (Qfontset, Qchar_table_extra_slots, make_number (9));
+ DEFSYM (Qfontset_info, "fontset-info");
+ Fput (Qfontset_info, Qchar_table_extra_slots, make_number (1));
+
+ DEFSYM (Qprepend, "prepend");
+ DEFSYM (Qappend, "append");
Vcached_fontset_data = Qnil;
staticpro (&Vcached_fontset_data);
AREF (Vfontset_table, 0) = Vdefault_fontset;
next_fontset_id = 1;
+ auto_fontset_alist = Qnil;
+ staticpro (&auto_fontset_alist);
+
DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist,
- doc: /* Alist of fontname patterns vs corresponding encoding info.
-Each element looks like (REGEXP . ENCODING-INFO),
- where ENCODING-INFO is an alist of CHARSET vs ENCODING.
-ENCODING is one of the following integer values:
- 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. */);
+ doc: /*
+Alist of fontname patterns vs the corresponding encoding and repertory info.
+Each element looks like (REGEXP . (ENCODING . REPERTORY)),
+where ENCODING is a charset or a char-table,
+and REPERTORY is a charset, a char-table, or nil.
+
+ENCODING is for converting a character to a glyph code of the font.
+If ENCODING is a charset, encoding a character by the charset gives
+the corresponding glyph code. If ENCODING is a char-table, looking up
+the table by a character gives the corresponding glyph code.
+
+REPERTORY specifies a repertory of characters supported by the font.
+If REPERTORY is a charset, all characters beloging to the charset are
+supported. If REPERTORY is a char-table, all characters who have a
+non-nil value in the table are supported. It REPERTORY is nil, Emacs
+gets the repertory information by an opened font and ENCODING. */);
Vfont_encoding_alist = Qnil;
DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent,
- doc: /* Char table of characters whose ascent values should be ignored.
+ doc: /*
+Char table of characters whose ascent values should be ignored.
If an entry for a character is non-nil, the ascent value of the glyph
is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font.
Vuse_default_ascent = Qnil;
DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition,
- doc: /* Char table of characters which is not composed relatively.
+ doc: /*
+Char table of characters which is not composed relatively.
If an entry for a character is non-nil, a composition sequence
which contains that character is displayed so that
the glyph of that character is put without considering
defsubr (&Sfontset_info);
defsubr (&Sfontset_font);
defsubr (&Sfontset_list);
+#ifdef FONTSET_DEBUG
+ defsubr (&Sfontset_list_all);
+#endif
}