/* Fontset handler.
- Copyright (C) 1995, 1997 Electrotechnical Laboratory, JAPAN.
+ Copyright (C) 1995, 1997, 2000 Electrotechnical Laboratory, JAPAN.
Licensed to the Free Software Foundation.
This file is part of GNU Emacs.
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+/* #define FONTSET_DEBUG */
+
#include <config.h>
-#if HAVE_ALLOCA_H
-#include <alloca.h>
-#endif /* HAVE_ALLOCA_H */
+
+#ifdef FONTSET_DEBUG
+#include <stdio.h>
+#endif
+
#include "lisp.h"
+#include "buffer.h"
#include "charset.h"
#include "ccl.h"
#include "frame.h"
+#include "dispextern.h"
#include "fontset.h"
+#include "window.h"
+
+#ifdef FONTSET_DEBUG
+#undef xassert
+#define xassert(X) do {if (!(X)) abort ();} while (0)
+#undef INLINE
+#define INLINE
+#endif
+
+
+/* FONTSET
+
+ A fontset is a collection of font related information to give
+ similar appearance (style, size, 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 multibyte characters based on an ASCII
+ face. All of the multibyte faces based on the same ASCII face
+ share the same realized fontset.
+
+ A fontset object is implemented by a char-table.
+
+ An element of a base fontset is:
+ (INDEX . FONTNAME) or
+ (INDEX . (FOUNDRY . REGISTRY ))
+ FONTNAME is a font name pattern for the corresponding character.
+ FOUNDRY and REGISTRY are respectively foundy and regisry fields of
+ a font name for the corresponding character. INDEX specifies for
+ which character (or generic character) the element is defined. It
+ may be different from an index to access this element. For
+ instance, if a fontset defines some font for all characters of
+ charset `japanese-jisx0208', INDEX is the generic character of this
+ charset. REGISTRY is the
+
+ An element of a realized fontset is FACE-ID which is a face to use
+ for displaying the correspnding character.
+
+ All single byte charaters (ASCII and 8bit-unibyte) share the same
+ element in a fontset. The element is stored in `defalt' slot of
+ the fontset. And this slot is never used as a default value of
+ multibyte characters. That means that the first 256 elements of a
+ fontset are always nil (as this is not efficient, we may implement
+ a fontset in a different way in the future).
+
+ To access or set each element, use macros FONTSET_REF and
+ FONTSET_SET respectively for efficiency.
+
+ A fontset has 3 extra slots.
+
+ The 1st slot is an ID number of the fontset.
+
+ The 2nd slot is a name of the fontset. This is nil for a realized
+ face.
+
+ The 3rd slot is a frame that the fontset belongs to. This is nil
+ for a default face.
+
+ A parent of a base fontset is nil. A parent of a realized fontset
+ is a base fontset.
+
+ All fontsets (except for the default fontset described below) are
+ recorded in Vfontset_table.
+
+
+ DEFAULT FONTSET
+
+ There's a special fontset named `default fontset' which defines a
+ default fontname that contains only REGISTRY field for each
+ character. 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.
+
+ The parent of realized fontsets created for faces that have no
+ fontset is the default fontset.
+
+
+ These structures are hidden from the other codes than this file.
+ The other codes handle fontsets only by their ID numbers. They
+ usually use 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.
+
+*/
+
+/********** VARIABLES and FUNCTION PROTOTYPES **********/
+
+extern Lisp_Object Qfont;
+Lisp_Object Qfontset;
+
+/* Vector containing all fontsets. */
+static Lisp_Object Vfontset_table;
+
+/* Next possibly free fontset ID. Usually this keeps the mininum
+ fontset ID not yet used. */
+static int next_fontset_id;
+
+/* The default fontset. This gives default FAMILY and REGISTRY of
+ font for each characters. */
+static Lisp_Object Vdefault_fontset;
-Lisp_Object Vglobal_fontset_alist;
Lisp_Object Vfont_encoding_alist;
Lisp_Object Vuse_default_ascent;
Lisp_Object Vignore_relative_composition;
Lisp_Object Vfontset_alias_alist;
Lisp_Object Vhighlight_wrong_size_font;
Lisp_Object Vclip_large_size_font;
+Lisp_Object Vvertical_centering_font_regexp;
-/* Used as a temporary in macro FS_LOAD_FONT. */
-int font_idx_temp;
-
-/* We had better have our own strcasecmp function because some system
- doesn't have it. */
-static char my_strcasetbl[256];
-
-/* Compare two strings S0 and S1 while ignoring differences in case.
- Return 1 if they differ, else return 0. */
-static int
-my_strcasecmp (s0, s1)
- unsigned char *s0, *s1;
-{
- while (*s0)
- if (my_strcasetbl[*s0++] != my_strcasetbl[*s1++]) return 1;
- return (int) *s1;
-}
-
-/* The following six are window system dependent functions. See
- the comments in src/fontset.h for more detail. */
+/* The following six are declarations of callback functions depending
+ on window system. See the comments in src/fontset.h for more
+ detail. */
/* Return a pointer to struct font_info of font FONT_IDX of frame F. */
struct font_info *(*get_font_info_func) P_ ((FRAME_PTR f, int font_idx));
/* Check if any window system is used now. */
void (*check_window_system_func) P_ ((void));
-struct fontset_data *
-alloc_fontset_data ()
+
+/* Prototype declarations for static functions. */
+static Lisp_Object fontset_ref P_ ((Lisp_Object, int));
+static void fontset_set P_ ((Lisp_Object, int, Lisp_Object));
+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 Lisp_Object font_family_registry P_ ((Lisp_Object));
+
+\f
+/********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
+
+/* Macros for Lisp vector. */
+#define AREF(V, IDX) XVECTOR (V)->contents[IDX]
+#define ASIZE(V) XVECTOR (V)->size
+
+/* Return the fontset with ID. No check of ID's validness. */
+#define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
+
+/* Macros to access extra, default, and parent slots, of fontset. */
+#define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
+#define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
+#define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[2]
+#define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->defalt
+#define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->parent
+
+#define BASE_FONTSET_P(fontset) NILP (FONTSET_BASE(fontset))
+
+
+/* Return the element of FONTSET (char-table) at index C (character). */
+
+#define FONTSET_REF(fontset, c) fontset_ref (fontset, c)
+
+static INLINE Lisp_Object
+fontset_ref (fontset, c)
+ Lisp_Object fontset;
+ int c;
+{
+ int charset, c1, c2;
+ Lisp_Object elt, defalt;
+ int i;
+
+ if (SINGLE_BYTE_CHAR_P (c))
+ return FONTSET_ASCII (fontset);
+
+ SPLIT_CHAR (c, charset, c1, c2);
+ elt = XCHAR_TABLE (fontset)->contents[charset + 128];
+ if (!SUB_CHAR_TABLE_P (elt))
+ return elt;
+ defalt = XCHAR_TABLE (elt)->defalt;
+ if (c1 < 32
+ || (elt = XCHAR_TABLE (elt)->contents[c1],
+ NILP (elt)))
+ return defalt;
+ if (!SUB_CHAR_TABLE_P (elt))
+ return elt;
+ defalt = XCHAR_TABLE (elt)->defalt;
+ if (c2 < 32
+ || (elt = XCHAR_TABLE (elt)->contents[c2],
+ NILP (elt)))
+ return defalt;
+ return elt;
+}
+
+
+#define FONTSET_REF_VIA_BASE(fontset, c) fontset_ref_via_base (fontset, &c)
+
+static INLINE Lisp_Object
+fontset_ref_via_base (fontset, c)
+ Lisp_Object fontset;
+ int *c;
+{
+ int charset, c1, c2;
+ Lisp_Object elt;
+
+ if (SINGLE_BYTE_CHAR_P (*c))
+ return FONTSET_ASCII (fontset);
+
+ elt = FONTSET_REF (FONTSET_BASE (fontset), *c);
+ if (NILP (elt))
+ return Qnil;
+
+ *c = XINT (XCAR (elt));
+ SPLIT_CHAR (*c, charset, c1, c2);
+ elt = XCHAR_TABLE (fontset)->contents[charset + 128];
+ if (c1 < 32)
+ return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt);
+ if (!SUB_CHAR_TABLE_P (elt))
+ return Qnil;
+ elt = XCHAR_TABLE (elt)->contents[c1];
+ if (c2 < 32)
+ return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt);
+ if (!SUB_CHAR_TABLE_P (elt))
+ return Qnil;
+ elt = XCHAR_TABLE (elt)->contents[c2];
+ return elt;
+}
+
+
+/* Store into the element of FONTSET at index C the value NEWETL. */
+#define FONTSET_SET(fontset, c, newelt) fontset_set(fontset, c, newelt)
+
+static void
+fontset_set (fontset, c, newelt)
+ Lisp_Object fontset;
+ int c;
+ Lisp_Object newelt;
+{
+ int charset, code[3];
+ Lisp_Object *elt, tmp;
+ int i, j;
+
+ if (SINGLE_BYTE_CHAR_P (c))
+ {
+ FONTSET_ASCII (fontset) = newelt;
+ return;
+ }
+
+ SPLIT_CHAR (c, charset, code[0], code[1]);
+ code[2] = 0; /* anchor */
+ elt = &XCHAR_TABLE (fontset)->contents[charset + 128];
+ for (i = 0; code[i] > 0; i++)
+ {
+ if (!SUB_CHAR_TABLE_P (*elt))
+ *elt = make_sub_char_table (*elt);
+ elt = &XCHAR_TABLE (*elt)->contents[code[i]];
+ }
+ if (SUB_CHAR_TABLE_P (*elt))
+ XCHAR_TABLE (*elt)->defalt = newelt;
+ else
+ *elt = newelt;
+}
+
+
+/* Return a newly created fontset with NAME. If BASE is nil, make a
+ base fontset. Otherwise make a realized fontset whose parent is
+ BASE. */
+
+static Lisp_Object
+make_fontset (frame, name, base)
+ Lisp_Object frame, name, base;
+{
+ Lisp_Object fontset, elt, base_elt;
+ int size = ASIZE (Vfontset_table);
+ int id = next_fontset_id;
+ int i, j;
+
+ /* Find a free slot in Vfontset_table. Usually, next_fontset_id is
+ the next available fontset ID. So it is expected that this loop
+ terminates quickly. In addition, as the last element of
+ Vfotnset_table is always nil, we don't have to check the range of
+ id. */
+ while (!NILP (AREF (Vfontset_table, id))) id++;
+
+ if (id + 1 == size)
+ {
+ Lisp_Object tem;
+ int i;
+
+ tem = Fmake_vector (make_number (size + 8), Qnil);
+ for (i = 0; i < size; i++)
+ AREF (tem, i) = AREF (Vfontset_table, i);
+ Vfontset_table = tem;
+ }
+
+ if (NILP (base))
+ fontset = Fcopy_sequence (Vdefault_fontset);
+ else
+ fontset = Fmake_char_table (Qfontset, Qnil);
+
+ FONTSET_ID (fontset) = make_number (id);
+ FONTSET_NAME (fontset) = name;
+ FONTSET_FRAME (fontset) = frame;
+ FONTSET_BASE (fontset) = base;
+
+ AREF (Vfontset_table, id) = fontset;
+ next_fontset_id = id + 1;
+ return fontset;
+}
+
+
+/* Return 1 if ID is a valid fontset id, else return 0. */
+
+static INLINE int
+fontset_id_valid_p (id)
+ int id;
+{
+ return (id >= 0 && id < ASIZE (Vfontset_table) - 1);
+}
+
+
+/* Extract `family' and `registry' string from FONTNAME and set in
+ *FAMILY and *REGISTRY respectively. Actually, `family' may also
+ contain `foundry', `registry' may also contain `encoding' of
+ FONTNAME. */
+
+static Lisp_Object
+font_family_registry (fontname)
+ Lisp_Object fontname;
+{
+ Lisp_Object family, registry;
+ char *p = XSTRING (fontname)->data;
+ char *sep[15];
+ int i = 0;
+
+ while (*p && i < 15) if (*p++ == '-') sep[i++] = p;
+ if (i != 14)
+ return fontname;
+
+ family = make_unibyte_string (sep[0], sep[2] - 1 - sep[0]);
+ registry = make_unibyte_string (sep[12], p - sep[12]);
+ return Fcons (family, registry);
+}
+
+\f
+/********** INTERFACES TO xfaces.c and dispextern.h **********/
+
+/* Return name of the fontset with ID. */
+
+Lisp_Object
+fontset_name (id)
+ int id;
{
- struct fontset_data *fontset_data
- = (struct fontset_data *) xmalloc (sizeof (struct fontset_data));
+ Lisp_Object fontset;
+ fontset = FONTSET_FROM_ID (id);
+ return FONTSET_NAME (fontset);
+}
- bzero (fontset_data, sizeof (struct fontset_data));
- return fontset_data;
+/* Return ASCII font name of the fontset with ID. */
+
+Lisp_Object
+fontset_ascii (id)
+ int id;
+{
+ Lisp_Object fontset, elt;
+ fontset= FONTSET_FROM_ID (id);
+ elt = FONTSET_ASCII (fontset);
+ return XCDR (elt);
}
+
+/* Free fontset of FACE. Called from free_realized_face. */
+
void
-free_fontset_data (fontset_data)
- struct fontset_data *fontset_data;
+free_face_fontset (f, face)
+ FRAME_PTR f;
+ struct face *face;
{
- if (fontset_data->fontset_table)
+ if (fontset_id_valid_p (face->fontset))
{
- int i;
+ AREF (Vfontset_table, face->fontset) = Qnil;
+ if (face->fontset < next_fontset_id)
+ next_fontset_id = face->fontset;
+ }
+}
- for (i = 0; i < fontset_data->n_fontsets; i++)
- {
- int j;
-
- xfree (fontset_data->fontset_table[i]->name);
- for (j = 0; j <= MAX_CHARSET; j++)
- if (fontset_data->fontset_table[i]->fontname[j])
- xfree (fontset_data->fontset_table[i]->fontname[j]);
- xfree (fontset_data->fontset_table[i]);
- }
- xfree (fontset_data->fontset_table);
+
+/* Return 1 iff FACE is suitable for displaying character C.
+ Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P
+ when C is not a single byte character.. */
+
+int
+face_suitable_for_char_p (face, c)
+ struct face *face;
+ int c;
+{
+ Lisp_Object fontset, elt;
+
+ if (SINGLE_BYTE_CHAR_P (c))
+ return (face == face->ascii_face);
+
+ xassert (fontset_id_valid_p (face->fontset));
+ fontset = FONTSET_FROM_ID (face->fontset);
+ xassert (!BASE_FONTSET_P (fontset));
+
+ elt = FONTSET_REF_VIA_BASE (fontset, c);
+ return (!NILP (elt) && face->id == XFASTINT (elt));
+}
+
+
+/* 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
+ should already have been realized for ASCII characters. Called
+ from the macro FACE_FOR_CHAR when C is not a single byte character. */
+
+int
+face_for_char (f, face, c)
+ FRAME_PTR f;
+ struct face *face;
+ int c;
+{
+ Lisp_Object fontset, elt;
+ int face_id;
+
+ xassert (fontset_id_valid_p (face->fontset));
+ fontset = FONTSET_FROM_ID (face->fontset);
+ xassert (!BASE_FONTSET_P (fontset));
+
+ elt = FONTSET_REF_VIA_BASE (fontset, c);
+ if (!NILP (elt))
+ return XINT (elt);
+
+ /* No face is recorded for C in the fontset of FACE. Make a new
+ realized face for C that has the same fontset. */
+ face_id = lookup_face (f, face->lface, c, face);
+
+ /* Record the face ID in FONTSET at the same index as the
+ information in the base fontset. */
+ FONTSET_SET (fontset, c, make_number (face_id));
+ return face_id;
+}
+
+
+/* Make a realized fontset for ASCII face FACE on frame F from the
+ base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
+ default fontset as the base. Value is the id of the new fontset.
+ Called from realize_x_face. */
+
+int
+make_fontset_for_ascii_face (f, base_fontset_id)
+ FRAME_PTR f;
+ int base_fontset_id;
+{
+ Lisp_Object base_fontset, fontset, name, frame;
+
+ XSETFRAME (frame, f);
+ if (base_fontset_id >= 0)
+ {
+ base_fontset = FONTSET_FROM_ID (base_fontset_id);
+ if (!BASE_FONTSET_P (base_fontset))
+ base_fontset = FONTSET_BASE (base_fontset);
+ xassert (BASE_FONTSET_P (base_fontset));
+ }
+ else
+ base_fontset = Vdefault_fontset;
+
+ fontset = make_fontset (frame, Qnil, base_fontset);
+ return XINT (FONTSET_ID (fontset));
+}
+
+
+/* Return the font name pattern for C that is recorded in the fontset
+ with ID. A font is opened by that pattern to get the fullname. If
+ the fullname conform to XLFD, extract foundry-family field and
+ registry-encoding field, and return the cons of them. Otherwise
+ return the fullname. If ID is -1, or the fontset doesn't contain
+ information about C, get the registry and encoding of C from the
+ default fontset. Called from choose_face_font. */
+
+Lisp_Object
+fontset_font_pattern (f, id, c)
+ FRAME_PTR f;
+ int id, c;
+{
+ Lisp_Object fontset, elt;
+ struct font_info *fontp;
+ Lisp_Object family_registry;
+
+ elt = Qnil;
+ if (fontset_id_valid_p (id))
+ {
+ fontset = FONTSET_FROM_ID (id);
+ xassert (!BASE_FONTSET_P (fontset));
+ fontset = FONTSET_BASE (fontset);
+ elt = FONTSET_REF (fontset, c);
}
+ else
+ elt = FONTSET_REF (Vdefault_fontset, c);
- xfree (fontset_data);
+ if (!CONSP (elt))
+ return Qnil;
+ if (CONSP (XCDR (elt)))
+ return XCDR (elt);
+
+ /* The fontset specifies only a font name pattern (not cons of
+ family and registry). Try to open a font by that pattern and get
+ a registry from the full name of the opened font. We ignore
+ family name here because it should be wild card in the fontset
+ specification. */
+ elt = XCDR (elt);
+ xassert (STRINGP (elt));
+ fontp = FS_LOAD_FONT (f, c, XSTRING (elt)->data, -1);
+ if (!fontp)
+ return Qnil;
+
+ family_registry = font_family_registry (build_string (fontp->full_name));
+ if (!CONSP (family_registry))
+ return family_registry;
+ XCAR (family_registry) = Qnil;
+ return family_registry;
}
-/* Load a font named FONTNAME for displaying CHARSET on frame F.
- All fonts for frame F is stored in a table pointed by FONT_TABLE.
- Return a pointer to the struct font_info of the loaded font.
- If loading fails, return 0;
- If FONTNAME is NULL, the name is taken from the information of FONTSET.
- If FONTSET is given, try to load a font whose size matches that of
- FONTSET, and, the font index is stored in the table for FONTSET.
- If you give FONTSET argument, don't call this function directry,
- instead call macro FS_LOAD_FONT with the same argument. */
+/* Load a font named FONTNAME to display character C on frame F.
+ Return a pointer to the struct font_info of the loaded font. If
+ loading fails, return NULL. If FACE is non-zero and a fontset is
+ assigned to it, record FACE->id in the fontset for C. If FONTNAME
+ is NULL, the name is taken from the fontset of FACE or what
+ specified by ID. */
struct font_info *
-fs_load_font (f, font_table, charset, fontname, fontset)
+fs_load_font (f, c, fontname, id, face)
FRAME_PTR f;
- struct font_info *font_table;
- int charset, fontset;
+ int c;
char *fontname;
+ int id;
+ struct face *face;
{
- Lisp_Object font_list;
+ Lisp_Object fontset;
Lisp_Object list, elt;
int font_idx;
int size = 0;
- struct fontset_info *fontsetp = 0;
struct font_info *fontp;
+ int charset = CHAR_CHARSET (c);
+
+ if (face)
+ id = face->fontset;
+ if (id < 0)
+ fontset = Qnil;
+ else
+ fontset = FONTSET_FROM_ID (id);
- if (fontset >= 0 && fontset < FRAME_FONTSET_DATA (f)->n_fontsets)
+ if (!NILP (fontset)
+ && !BASE_FONTSET_P (fontset))
{
- fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset];
- font_idx = fontsetp->font_indexes[charset];
- if (font_idx >= 0)
- /* We have already loaded a font. */
- return font_table + font_idx;
- else if (font_idx == FONT_NOT_FOUND)
- /* We have already tried loading a font and failed. */
- return 0;
- if (!fontname)
- fontname = fontsetp->fontname[charset];
- }
+ elt = FONTSET_REF_VIA_BASE (fontset, c);
+ if (!NILP (elt))
+ {
+ /* A suitable face for C is already recorded, which means
+ that a proper font is already loaded. */
+ int face_id = XINT (elt);
- if (!fontname)
- /* No way to get fontname. */
- return 0;
+ xassert (face_id == face->id);
+ face = FACE_FROM_ID (f, face_id);
+ return (*get_font_info_func) (f, face->font_info_id);
+ }
- /* If CHARSET is not ASCII and FONTSET is specified, we must load a
- font of appropriate size to be used with other fonts in this
- fontset. */
- if (charset != CHARSET_ASCII && fontsetp)
- {
- /* If we have not yet loaded ASCII font of FONTSET, we must load
- it now to decided the size and height of this fontset. */
- if (fontsetp->size == 0)
+ if (!fontname && charset == CHARSET_ASCII)
{
- fontp = fs_load_font (f, font_table, CHARSET_ASCII, 0, fontset);
- if (!fontp)
- /* Any fontset should contain available ASCII. */
- return 0;
+ elt = FONTSET_ASCII (fontset);
+ fontname = XSTRING (XCDR (elt))->data;
}
- /* Now we have surely decided the size of this fontset. */
- size = fontsetp->size * CHARSET_WIDTH (charset);
}
- fontp = (*load_font_func) (f, fontname, size);
+ if (!fontname)
+ /* No way to get fontname. */
+ return 0;
+ fontp = (*load_font_func) (f, fontname, size);
if (!fontp)
- {
- if (fontsetp)
- fontsetp->font_indexes[charset] = FONT_NOT_FOUND;
- return 0;
- }
+ return 0;
- /* Fill in fields (CHARSET, ENCODING, and FONT_ENCODER) which are
- not set by (*load_font_func). */
+ /* Fill in members (charset, vertical_centering, encoding, etc) of
+ font_info structure that are not set by (*load_font_func). */
fontp->charset = charset;
+ fontp->vertical_centering
+ = (STRINGP (Vvertical_centering_font_regexp)
+ && (fast_c_string_match_ignore_case
+ (Vvertical_centering_font_regexp, fontp->full_name) >= 0));
+
if (fontp->encoding[1] != FONT_ENCODING_NOT_DECIDED)
{
/* The font itself tells which code points to be used. Use this
}
else
{
- /* The font itself doesn't tell which code points to be used. */
+ /* The font itself doesn't have information about encoding. */
int i;
- /* At first, set 1 (means 0xA0..0xFF) as the default. */
- fontp->encoding[0] = 1;
+ fontname = fontp->full_name;
+ /* By default, encoding of ASCII chars is 0 (i.e. 0x00..0x7F),
+ others is 1 (i.e. 0x80..0xFF). */
+ fontp->encoding[0] = 0;
for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++)
fontp->encoding[i] = 1;
/* Then override them by a specification in Vfont_encoding_alist. */
- for (list = Vfont_encoding_alist; CONSP (list); list = XCONS (list)->cdr)
+ for (list = Vfont_encoding_alist; CONSP (list); list = XCDR (list))
{
- elt = XCONS (list)->car;
+ elt = XCAR (list);
if (CONSP (elt)
- && STRINGP (XCONS (elt)->car) && CONSP (XCONS (elt)->cdr)
- && (fast_c_string_match_ignore_case (XCONS (elt)->car, fontname)
+ && STRINGP (XCAR (elt)) && CONSP (XCDR (elt))
+ && (fast_c_string_match_ignore_case (XCAR (elt), fontname)
>= 0))
{
Lisp_Object tmp;
- for (tmp = XCONS (elt)->cdr; CONSP (tmp); tmp = XCONS (tmp)->cdr)
- if (CONSP (XCONS (tmp)->car)
- && ((i = get_charset_id (XCONS (XCONS (tmp)->car)->car))
+ for (tmp = XCDR (elt); CONSP (tmp); tmp = XCDR (tmp))
+ if (CONSP (XCAR (tmp))
+ && ((i = get_charset_id (XCAR (XCAR (tmp))))
>= 0)
- && INTEGERP (XCONS (XCONS (tmp)->car)->cdr)
- && XFASTINT (XCONS (XCONS (tmp)->car)->cdr) < 4)
+ && INTEGERP (XCDR (XCAR (tmp)))
+ && XFASTINT (XCDR (XCAR (tmp))) < 4)
fontp->encoding[i]
- = XFASTINT (XCONS (XCONS (tmp)->car)->cdr);
+ = XFASTINT (XCDR (XCAR (tmp)));
}
}
}
if (find_ccl_program_func)
(*find_ccl_program_func) (fontp);
- /* If FONTSET is specified, setup various fields of it. */
- if (fontsetp)
- {
- fontsetp->font_indexes[charset] = fontp->font_idx;
- if (charset == CHARSET_ASCII)
- {
- /* Decide or change the size and height of this fontset. */
- if (fontsetp->size == 0)
- {
- fontsetp->size = fontp->size;
- fontsetp->height = fontp->height;
- }
- else if (fontsetp->size != fontp->size
- || fontsetp->height != fontp->height)
- {
- /* When loading ASCII font of the different size from
- the size of FONTSET, we have to update the size of
- FONTSET. Since changing the size of FONTSET may make
- some fonts already loaded inappropriate to be used in
- FONTSET, we must delete the record of such fonts. In
- that case, we also have to calculate the height of
- FONTSET from the remaining fonts. */
- int i;
-
- fontsetp->size = fontp->size;
- fontsetp->height = fontp->height;
- for (i = CHARSET_ASCII + 1; i <= MAX_CHARSET; i++)
- {
- font_idx = fontsetp->font_indexes[i];
- if (font_idx >= 0)
- {
- struct font_info *fontp2 = font_table + font_idx;
-
- if (fontp2->size != fontp->size * CHARSET_WIDTH (i))
- fontsetp->font_indexes[i] = FONT_NOT_OPENED;
- /* The following code should be disabled until
- Emacs supports variable height lines. */
-#if 0
- else if (fontsetp->height < fontp->height)
- fontsetp->height = fontp->height;
-#endif
- }
- }
- }
- }
- }
-
+ /* If we loaded a font for a face that has fontset, record the face
+ ID in the fontset for C. */
+ if (face
+ && !NILP (fontset)
+ && !BASE_FONTSET_P (fontset))
+ FONTSET_SET (fontset, c, make_number (face->id));
return fontp;
}
-/* Return ID of the fontset named NAME on frame F. */
-
-int
-fs_query_fontset (f, name)
- FRAME_PTR f;
- char *name;
-{
- struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f);
- int i;
-
- for (i = 0; i < fontset_data->n_fontsets; i++)
- if (!my_strcasecmp(name, fontset_data->fontset_table[i]->name))
- return i;
- return -1;
-}
-
-/* Register a fontset specified by FONTSET_INFO for frame FRAME.
- Return the fontset ID if successfully registered, else return -1.
- FONTSET_INFO is a cons of name of the fontset and FONTLIST, where
- FONTLIST is an alist of charsets vs fontnames. */
-
-int
-fs_register_fontset (f, fontset_info)
- FRAME_PTR f;
- Lisp_Object fontset_info;
-{
- struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f);
- Lisp_Object name, fontlist;
- int fontset;
- struct fontset_info *fontsetp;
- int i;
-
- if (!CONSP (fontset_info)
- || !STRINGP (XCONS (fontset_info)->car)
- || !CONSP (XCONS (fontset_info)->cdr))
- /* Invalid data in FONTSET_INFO. */
- return -1;
-
- name = XCONS (fontset_info)->car;
- if ((fontset = fs_query_fontset (f, XSTRING (name)->data)) >= 0)
- /* This fontset already exists on frame F. */
- return fontset;
-
- fontsetp = (struct fontset_info *) xmalloc (sizeof (struct fontset_info));
-
- fontsetp->name = (char *) xmalloc (XSTRING (name)->size + 1);
- bcopy(XSTRING (name)->data, fontsetp->name, XSTRING (name)->size + 1);
-
- fontsetp->size = fontsetp->height = 0;
-
- for (i = 0; i <= MAX_CHARSET; i++)
- {
- fontsetp->fontname[i] = (char *) 0;
- fontsetp->font_indexes[i] = FONT_NOT_OPENED;
- }
-
- for (fontlist = XCONS (fontset_info)->cdr; CONSP (fontlist);
- fontlist = XCONS (fontlist)->cdr)
- {
- Lisp_Object tem = Fcar (fontlist);
- int charset;
-
- if (CONSP (tem)
- && (charset = get_charset_id (XCONS (tem)->car)) >= 0
- && STRINGP (XCONS (tem)->cdr))
- {
- fontsetp->fontname[charset]
- = (char *) xmalloc (XSTRING (XCONS (tem)->cdr)->size + 1);
- bcopy (XSTRING (XCONS (tem)->cdr)->data,
- fontsetp->fontname[charset],
- XSTRING (XCONS (tem)->cdr)->size + 1);
- }
- else
- /* Broken or invalid data structure. */
- return -1;
- }
-
- /* Do we need to create the table? */
- if (fontset_data->fontset_table_size == 0)
- {
- fontset_data->fontset_table_size = 8;
- fontset_data->fontset_table
- = (struct fontset_info **) xmalloc (fontset_data->fontset_table_size
- * sizeof (struct fontset_info *));
- }
- /* Do we need to grow the table? */
- else if (fontset_data->n_fontsets >= fontset_data->fontset_table_size)
- {
- fontset_data->fontset_table_size += 8;
- fontset_data->fontset_table
- = (struct fontset_info **) xrealloc (fontset_data->fontset_table,
- fontset_data->fontset_table_size
- * sizeof (struct fontset_info *));
- }
- fontset = fontset_data->n_fontsets++;
- fontset_data->fontset_table[fontset] = fontsetp;
-
- return fontset;
-}
-
+\f
/* 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 (XCONS (Vcached_fontset_data)->car)->data)
-#define CACHED_FONTSET_REGEX (XCONS (Vcached_fontset_data)->cdr)
+#define CACHED_FONTSET_NAME (XSTRING (XCAR (Vcached_fontset_data))->data)
+#define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
/* If fontset name PATTERN contains any wild card, return regular
expression corresponding to PATTERN. */
-Lisp_Object
+static Lisp_Object
fontset_pattern_regexp (pattern)
Lisp_Object pattern;
{
return CACHED_FONTSET_REGEX;
}
+/* Return ID of the base fontset named NAME. If there's no such
+ fontset, return -1. */
+
+int
+fs_query_fontset (name, regexpp)
+ Lisp_Object name;
+ int regexpp;
+{
+ Lisp_Object fontset, tem;
+ int i;
+
+ name = Fdowncase (name);
+ if (!regexpp)
+ {
+ tem = Frassoc (name, Vfontset_alias_alist);
+ if (CONSP (tem) && STRINGP (XCAR (tem)))
+ name = XCAR (tem);
+ else
+ {
+ tem = fontset_pattern_regexp (name);
+ if (STRINGP (tem))
+ {
+ name = tem;
+ regexpp = 1;
+ }
+ }
+ }
+
+ for (i = 0; i < ASIZE (Vfontset_table); i++)
+ {
+ Lisp_Object fontset;
+ unsigned char *this_name;
+
+ fontset = FONTSET_FROM_ID (i);
+ if (NILP (fontset)
+ || !BASE_FONTSET_P (fontset))
+ continue;
+
+ this_name = XSTRING (FONTSET_NAME (fontset))->data;
+ if (regexpp
+ ? fast_c_string_match_ignore_case (name, this_name) >= 0
+ : !strcmp (XSTRING (name)->data, this_name))
+ return i;
+ }
+ return -1;
+}
+
+
DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0,
- "Return a fontset name which matches PATTERN, nil if no matching fontset.\n\
-PATTERN can contain `*' or `?' as a wild card\n\
-just like X's font name matching algorithm allows.\n\
-If REGEXPP is non-nil, pattern is regexp;\n\
-so PATTERN is considered as regular expression.")
+ "Return the name of a fontset that matches PATTERN.\n\
+The value is nil if there is no matching fontset.\n\
+PATTERN can contain `*' or `?' as a wildcard\n\
+just as X font name matching algorithm allows.\n\
+If REGEXPP is non-nil, PATTERN is a regular expression.")
(pattern, regexpp)
Lisp_Object pattern, regexpp;
{
- Lisp_Object regexp, tem;
+ Lisp_Object fontset;
+ int id;
(*check_window_system_func) ();
if (XSTRING (pattern)->size == 0)
return Qnil;
- tem = Frassoc (pattern, Vfontset_alias_alist);
- if (!NILP (tem))
- return Fcar (tem);
-
- if (NILP (regexpp))
- regexp = fontset_pattern_regexp (pattern);
- else
- regexp = pattern;
-
- for (tem = Vglobal_fontset_alist; CONSP (tem); tem = XCONS (tem)->cdr)
- {
- Lisp_Object fontset_name = XCONS (XCONS (tem)->car)->car;
- if (!NILP (regexp))
- {
- if (fast_c_string_match_ignore_case (regexp,
- XSTRING (fontset_name)->data)
- >= 0)
- return fontset_name;
- }
- else
- {
- if (!my_strcasecmp (XSTRING (pattern)->data,
- XSTRING (fontset_name)->data))
- return fontset_name;
- }
- }
+ id = fs_query_fontset (pattern, !NILP (regexpp));
+ if (id < 0)
+ return Qnil;
- return Qnil;
+ fontset = FONTSET_FROM_ID (id);
+ return FONTSET_NAME (fontset);
}
-/* Return a list of names of available fontsets matching PATTERN on
- frame F. If SIZE is not 0, it is the size (maximum bound width) of
- fontsets to be listed. */
+/* Return a list of base fontset names matching PATTERN on frame F.
+ If SIZE is not 0, it is the size (maximum bound width) of fontsets
+ to be listed. */
Lisp_Object
list_fontsets (f, pattern, size)
Lisp_Object pattern;
int size;
{
- int i;
- Lisp_Object regexp, val;
+ Lisp_Object frame, regexp, val, tail;
+ int id;
- regexp = fontset_pattern_regexp (pattern);
+ XSETFRAME (frame, f);
+ regexp = fontset_pattern_regexp (pattern);
val = Qnil;
- for (i = 0; i < FRAME_FONTSET_DATA (f)->n_fontsets; i++)
- {
- struct fontset_info *fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[i];
- int name_matched = 0;
- int size_matched = 0;
- if (!NILP (regexp))
- {
- if (fast_c_string_match_ignore_case (regexp, fontsetp->name) >= 0)
- name_matched = 1;
- }
- else
- {
- if (!my_strcasecmp (XSTRING (pattern)->data, fontsetp->name))
- name_matched = 1;
- }
-
- if (name_matched)
+ for (id = 0; id < ASIZE (Vfontset_table); id++)
+ {
+ Lisp_Object fontset;
+ unsigned char *name;
+
+ fontset = FONTSET_FROM_ID (id);
+ if (NILP (fontset)
+ || !BASE_FONTSET_P (fontset)
+ || !EQ (frame, FONTSET_FRAME (fontset)))
+ continue;
+ name = XSTRING (FONTSET_NAME (fontset))->data;
+
+ if (!NILP (regexp)
+ ? (fast_c_string_match_ignore_case (regexp, name) < 0)
+ : strcmp (XSTRING (pattern)->data, name))
+ continue;
+
+ if (size)
{
- if (!size || fontsetp->size == size)
- size_matched = 1;
- else if (fontsetp->size == 0)
- {
- /* No font of this fontset has loaded yet. Try loading
- one with SIZE. */
- int j;
-
- for (j = 0; j <= MAX_CHARSET; j++)
- if (fontsetp->fontname[j])
- {
- if ((*load_font_func) (f, fontsetp->fontname[j], size))
- size_matched = 1;
- break;
- }
- }
-
- if (size_matched)
- val = Fcons (build_string (fontsetp->name), val);
+ struct font_info *fontp;
+ fontp = FS_LOAD_FONT (f, 0, NULL, id);
+ if (!fontp || size != fontp->size)
+ continue;
}
+ val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val);
}
return val;
}
DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0,
- "Create a new fontset NAME which contains fonts in FONTLIST.\n\
-FONTLIST is an alist of charsets vs corresponding font names.")
+ "Create a new fontset NAME that contains font information in FONTLIST.\n\
+FONTLIST is an alist of charsets vs corresponding font name patterns.")
(name, fontlist)
Lisp_Object name, fontlist;
{
- Lisp_Object fullname, fontset_info;
- Lisp_Object tail;
+ Lisp_Object fontset, elements, ascii_font;
+ Lisp_Object tem, tail, elt;
(*check_window_system_func) ();
CHECK_STRING (name, 0);
CHECK_LIST (fontlist, 1);
- fullname = Fquery_fontset (name, Qnil);
- if (!NILP (fullname))
- error ("Fontset \"%s\" matches the existing fontset \"%s\"",
- XSTRING (name)->data, XSTRING (fullname)->data);
+ name = Fdowncase (name);
+ tem = Fquery_fontset (name, Qnil);
+ if (!NILP (tem))
+ error ("Fontset `%s' matches the existing fontset `%s'",
+ XSTRING (name)->data, XSTRING (tem)->data);
- /* Check the validity of FONTLIST. */
- for (tail = fontlist; CONSP (tail); tail = XCONS (tail)->cdr)
+ /* Check the validity of FONTLIST while creating a template for
+ fontset elements. */
+ elements = ascii_font = Qnil;
+ for (tail = fontlist; CONSP (tail); tail = XCDR (tail))
{
- Lisp_Object tem = XCONS (tail)->car;
- int charset;
+ Lisp_Object family, registry;
+ int c, charset;
+ tem = XCAR (tail);
if (!CONSP (tem)
- || (charset = get_charset_id (XCONS (tem)->car)) < 0
- || !STRINGP (XCONS (tem)->cdr))
+ || (charset = get_charset_id (XCAR (tem))) < 0
+ || !STRINGP (XCDR (tem)))
error ("Elements of fontlist must be a cons of charset and font name");
+
+ tem = Fdowncase (XCDR (tem));
+ if (charset == CHARSET_ASCII)
+ ascii_font = tem;
+ else
+ {
+ c = MAKE_CHAR (charset, 0, 0);
+ elements = Fcons (Fcons (make_number (c), tem), elements);
+ }
}
- fontset_info = Fcons (name, fontlist);
- Vglobal_fontset_alist = Fcons (fontset_info, Vglobal_fontset_alist);
+ if (NILP (ascii_font))
+ error ("No ASCII font in the fontlist");
- /* Register this fontset for all existing frames. */
- {
- Lisp_Object framelist, frame;
-
- FOR_EACH_FRAME (framelist, frame)
- if (!FRAME_TERMCAP_P (XFRAME (frame)))
- fs_register_fontset (XFRAME (frame), fontset_info);
- }
+ fontset = make_fontset (Qnil, name, Qnil);
+ FONTSET_ASCII (fontset) = Fcons (make_number (0), ascii_font);
+ for (; CONSP (elements); elements = XCDR (elements))
+ {
+ elt = XCAR (elements);
+ tem = Fcons (XCAR (elt), font_family_registry (XCDR (elt)));
+ FONTSET_SET (fontset, XINT (XCAR (elt)), tem);
+ }
return Qnil;
}
-extern Lisp_Object Qfont;
-Lisp_Object Qfontset;
-DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0,
- "Set FONTNAME for a font of CHARSET in fontset NAME on frame FRAME.\n\
-If FRAME is omitted or nil, all frames are affected.")
- (name, charset_symbol, fontname, frame)
- Lisp_Object name, charset_symbol, fontname, frame;
+/* Clear all elements of FONTSET for multibyte characters. */
+
+static void
+clear_fontset_elements (fontset)
+ Lisp_Object fontset;
{
- int charset;
- Lisp_Object fullname, fontlist;
+ int i;
- (*check_window_system_func) ();
+ for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++)
+ XCHAR_TABLE (fontset)->contents[i] = Qnil;
+}
+
+
+/* Check validity of NAME as a fontset name and return the
+ corresponding fontset. If not valid, signal an error.
+ If NAME is t, return Vdefault_fontset. */
+
+static Lisp_Object
+check_fontset_name (name)
+ Lisp_Object name;
+{
+ int id;
+
+ if (EQ (name, Qt))
+ return Vdefault_fontset;
CHECK_STRING (name, 0);
- CHECK_SYMBOL (charset_symbol, 1);
- CHECK_STRING (fontname, 2);
- if (!NILP (frame))
- CHECK_LIVE_FRAME (frame, 3);
+ id = fs_query_fontset (name, 0);
+ if (id < 0)
+ error ("Fontset `%s' does not exist", XSTRING (name)->data);
+ return FONTSET_FROM_ID (id);
+}
- if ((charset = get_charset_id (charset_symbol)) < 0)
- error ("Invalid charset: %s", XSYMBOL (charset_symbol)->name->data);
+DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0,
+ "Modify fontset NAME to use FONTNAME for CHARACTER.\n\
+\n\
+CHARACTER may be a cons; (FROM . TO), where FROM and TO are\n\
+non-generic characters. In that case, use FONTNAME\n\
+for all characters in the range FROM and TO (inclusive).\n\
+\n\
+FONTNAME may be a cons; (FAMILY . REGISTRY), where FAMILY is a family\n\
+name of a font, REGSITRY is a registry name of a font.")
+ (name, character, fontname, frame)
+ Lisp_Object name, character, fontname, frame;
+{
+ Lisp_Object fontset, elt;
+ Lisp_Object realized;
+ int from, to;
+ int id;
+ Lisp_Object family, registry;
- fullname = Fquery_fontset (name, Qnil);
- if (NILP (fullname))
- error ("Fontset \"%s\" does not exist", XSTRING (name)->data);
+ fontset = check_fontset_name (name);
- /* If FRAME is not specified, we must, at first, update contents of
- `global-fontset-alist' for a frame created in the future. */
- if (NILP (frame))
+ if (CONSP (character))
{
- Lisp_Object fontset_info = Fassoc (fullname, Vglobal_fontset_alist);
- Lisp_Object tem = Fassq (charset_symbol, XCONS (fontset_info)->cdr);
+ /* CH should be (FROM . TO) where FROM and TO are non-generic
+ characters. */
+ CHECK_NUMBER (XCAR (character), 1);
+ CHECK_NUMBER (XCDR (character), 1);
+ from = XINT (XCAR (character));
+ to = XINT (XCDR (character));
+ if (!char_valid_p (from, 0) || !char_valid_p (to, 0))
+ error ("Character range should be by non-generic characters.");
+ if (!NILP (name)
+ && (SINGLE_BYTE_CHAR_P (from) || SINGLE_BYTE_CHAR_P (to)))
+ error ("Can't change font for a single byte character");
+ }
+ else
+ {
+ CHECK_NUMBER (character, 1);
+ from = XINT (character);
+ to = from;
+ }
+ if (!char_valid_p (from, 1))
+ invalid_character (from);
+ if (SINGLE_BYTE_CHAR_P (from))
+ error ("Can't change font for a single byte character");
+ if (from < to)
+ {
+ if (!char_valid_p (to, 1))
+ invalid_character (to);
+ if (SINGLE_BYTE_CHAR_P (to))
+ error ("Can't change font for a single byte character");
+ }
- if (NILP (tem))
- XCONS (fontset_info)->cdr
- = Fcons (Fcons (charset_symbol, fontname),
- XCONS (fontset_info)->cdr);
- else
- XCONS (tem)->cdr = fontname;
+ if (STRINGP (fontname))
+ {
+ fontname = Fdowncase (fontname);
+ elt = Fcons (make_number (from), font_family_registry (fontname));
}
+ else
+ {
+ CHECK_CONS (fontname, 2);
+ family = XCAR (fontname);
+ registry = XCDR (fontname);
+ if (!NILP (family))
+ CHECK_STRING (family, 2);
+ if (!NILP (registry))
+ CHECK_STRING (registry, 2);
+ elt = Fcons (make_number (from), Fcons (family, registry));
+ }
+
+ /* The arg FRAME is kept for backward compatibility. We only check
+ the validity. */
+ if (!NILP (frame))
+ CHECK_LIVE_FRAME (frame, 3);
- /* Then, update information in the specified frame or all existing
- frames. */
- {
- Lisp_Object framelist, tem;
+ for (; from <= to; from++)
+ FONTSET_SET (fontset, from, elt);
+ Foptimize_char_table (fontset);
- FOR_EACH_FRAME (framelist, tem)
- if (!FRAME_TERMCAP_P (XFRAME (tem))
- && (NILP (frame) || EQ (frame, tem)))
+ /* If there's a realized fontset REALIZED whose parent is FONTSET,
+ clear all the elements of REALIZED and free all multibyte faces
+ whose fontset is REALIZED. This way, the specified character(s)
+ are surely redisplayed by a correct font. */
+ for (id = 0; id < ASIZE (Vfontset_table); id++)
+ {
+ realized = AREF (Vfontset_table, id);
+ if (!NILP (realized)
+ && !BASE_FONTSET_P (realized)
+ && EQ (FONTSET_BASE (realized), fontset))
{
- FRAME_PTR f = XFRAME (tem);
- int fontset = fs_query_fontset (f, XSTRING (fullname)->data);
- struct fontset_info *fontsetp
- = FRAME_FONTSET_DATA (f)->fontset_table[fontset];
-
- if (fontsetp->fontname[charset])
- xfree (fontsetp->fontname[charset]);
- fontsetp->fontname[charset]
- = (char *) xmalloc (XSTRING (fontname)->size + 1);
- bcopy (XSTRING (fontname)->data, fontsetp->fontname[charset],
- XSTRING (fontname)->size + 1);
- fontsetp->font_indexes[charset] = FONT_NOT_OPENED;
-
- if (charset == CHARSET_ASCII)
- {
- Lisp_Object font_param = Fassq (Qfont, Fframe_parameters (tem));
-
- if (set_frame_fontset_func
- && !NILP (font_param)
- && !strcmp (XSTRING (fullname)->data,
- XSTRING (XCONS (font_param)->cdr)->data))
- /* This fontset is the default fontset on frame TEM.
- We may have to resize this frame because of new
- ASCII font. */
- (*set_frame_fontset_func) (f, fullname, Qnil);
- }
+ FRAME_PTR f = XFRAME (FONTSET_FRAME (realized));
+ clear_fontset_elements (realized);
+ free_realized_multibyte_face (f, id);
}
- }
+ }
return Qnil;
}
where\n\
OPENED-NAME is the name used for opening the font,\n\
FULL-NAME is the full name of the font,\n\
- CHARSET is the charset displayed by the font,\n\
- SIZE is the minimum bound width of the font,\n\
+ SIZE is the maximum bound width of the font,\n\
HEIGHT is the height of the font,\n\
BASELINE-OFFSET is the upward offset pixels from ASCII baseline,\n\
RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling\n\
(*check_window_system_func) ();
CHECK_STRING (name, 0);
+ name = Fdowncase (name);
if (NILP (frame))
- f = selected_frame;
- else
- {
- CHECK_LIVE_FRAME (frame, 1);
- f = XFRAME (frame);
- }
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 1);
+ f = XFRAME (frame);
if (!query_font_func)
error ("Font query function is not supported");
if (!fontp)
return Qnil;
- info = Fmake_vector (make_number (8), Qnil);
+ info = Fmake_vector (make_number (7), Qnil);
XVECTOR (info)->contents[0] = build_string (fontp->name);
XVECTOR (info)->contents[1] = build_string (fontp->full_name);
- XVECTOR (info)->contents[2] = CHARSET_SYMBOL (fontp->charset);
- XVECTOR (info)->contents[3] = make_number (fontp->size);
- XVECTOR (info)->contents[4] = make_number (fontp->height);
- XVECTOR (info)->contents[5] = make_number (fontp->baseline_offset);
- XVECTOR (info)->contents[6] = make_number (fontp->relative_compose);
- XVECTOR (info)->contents[7] = make_number (fontp->default_ascent);
+ XVECTOR (info)->contents[2] = make_number (fontp->size);
+ XVECTOR (info)->contents[3] = make_number (fontp->height);
+ XVECTOR (info)->contents[4] = make_number (fontp->baseline_offset);
+ XVECTOR (info)->contents[5] = make_number (fontp->relative_compose);
+ XVECTOR (info)->contents[6] = make_number (fontp->default_ascent);
return info;
}
+
+/* Return the font name for the character at POSITION in the current
+ buffer. This is computed from all the text properties and overlays
+ that apply to POSITION. It returns nil in the following cases:
+
+ (1) The window system doesn't have a font for the character (thus
+ it is displayed by an empty box).
+
+ (2) The character code is invalid.
+
+ (3) The current buffer is not displayed in any window.
+
+ In addition, the returned font name may not take into account of
+ such redisplay engine hooks as what used in jit-lock-mode if
+ POSITION is currently not visible. */
+
+
+DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 1, 0,
+ "For internal use only.")
+ (position)
+ Lisp_Object position;
+{
+ int pos, pos_byte, dummy;
+ int face_id;
+ int c;
+ Lisp_Object window;
+ struct window *w;
+ struct frame *f;
+ struct face *face;
+
+ CHECK_NUMBER_COERCE_MARKER (position, 0);
+ pos = XINT (position);
+ if (pos < BEGV || pos >= ZV)
+ args_out_of_range_3 (position, make_number (BEGV), make_number (ZV));
+ pos_byte = CHAR_TO_BYTE (pos);
+ c = FETCH_CHAR (pos_byte);
+ if (! CHAR_VALID_P (c, 0))
+ return Qnil;
+ window = Fget_buffer_window (Fcurrent_buffer (), Qt);
+ if (NILP (window))
+ return Qnil;
+ 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)
+ : 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.. */
+
+static void
+accumulate_font_info (arg, character, elt)
+ Lisp_Object arg, character, elt;
+{
+ Lisp_Object last, last_char, last_elt, tmp;
+
+ 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)))
+ {
+ int this_charset = CHAR_CHARSET (XINT (character));
+
+ if (CONSP (last_char)) /* LAST_CHAR == (FROM . TO) */
+ {
+ if (this_charset == CHAR_CHARSET (XINT (XCAR (last_char))))
+ {
+ XCDR (last_char) = character;
+ return;
+ }
+ }
+ else
+ {
+ if (this_charset == CHAR_CHARSET (XINT (last_char)))
+ {
+ XCAR (XCAR (last)) = Fcons (last_char, character);
+ return;
+ }
+ }
+ }
+ XCDR (last) = Fcons (Fcons (character, Fcons (elt, Qnil)), Qnil);
+ XCAR (arg) = XCDR (last);
+}
+
+
DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0,
"Return information about a fontset named NAME on frame FRAME.\n\
-If FRAME is omitted or nil, use the selected frame.\n\
-The returned value is a vector of SIZE, HEIGHT, and FONT-LIST,\n\
-where\n\
- SIZE is the minimum bound width of ASCII font of the fontset,\n\
- HEIGHT is the height of the tallest font in the fontset, and\n\
- FONT-LIST is an alist of the format:\n\
- (CHARSET REQUESTED-FONT-NAME LOADED-FONT-NAME).\n\
-LOADED-FONT-NAME t means the font is not yet loaded, nil means the\n\
-loading failed.")
+The value is a list:\n\
+ \(FONTSET-NAME (CHARSET-OR-RANGE FONT-SPEC OPENED ...) ...),\n\
+where,\n\
+ FONTSET-NAME is a full name of the fontset.\n\
+ CHARSET-OR-RANGE is a charset, a character (may be a generic character)\n\
+ or a cons of two characters specifying the range of characters.\n\
+ FONT-SPEC is a fontname pattern string or a cons (FAMILY . REGISTRY),\n\
+ where FAMILY is a `FAMILY' field of a XLFD font name,\n\
+ REGISTRY is a `CHARSET_REGISTRY' field of a XLDF font name.\n\
+ FAMILY may contain a `FOUNDARY' field at the head.\n\
+ REGISTRY may contain a `CHARSET_ENCODING' field at the tail.\n\
+ OPENEDs are names of fonts actually opened.\n\
+If FRAME is omitted, it defaults to the currently selected frame.")
(name, frame)
Lisp_Object name, frame;
{
+ Lisp_Object fontset;
FRAME_PTR f;
- int fontset;
- struct fontset_info *fontsetp;
- Lisp_Object info, val;
+ Lisp_Object indices[3];
+ Lisp_Object val, tail, elt;
+ Lisp_Object *realized;
+ int n_realized = 0;
int i;
(*check_window_system_func) ();
- CHECK_STRING(name, 0);
+ fontset = check_fontset_name (name);
+
if (NILP (frame))
- f = selected_frame;
- else
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 1);
+ f = XFRAME (frame);
+
+ /* Recodeq 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++)
+ {
+ elt = FONTSET_FROM_ID (i);
+ if (!NILP (elt)
+ && EQ (FONTSET_BASE (elt), fontset))
+ realized[n_realized++] = elt;
+ }
+
+ /* 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 (make_number (0),
+ Fcons (XCDR (FONTSET_ASCII (fontset)), Qnil)),
+ Qnil);
+ val = Fcons (val, val);
+ map_char_table (accumulate_font_info, Qnil, fontset, val, 0, indices);
+ val = XCDR (val);
+
+ /* For each FONT-INFO, if CHAR_OR_RANGE (car part) is a generic
+ character for a charset, replace it wiht the charset symbol. If
+ fonts are opened for FONT-SPEC, append the names of the fonts to
+ FONT-SPEC. */
+ for (tail = val; CONSP (tail); tail = XCDR (tail))
{
- CHECK_LIVE_FRAME (frame, 1);
- f = XFRAME (frame);
+ int c;
+ elt = XCAR (tail);
+ if (INTEGERP (XCAR (elt)))
+ {
+ int charset, c1, c2;
+ c = XINT (XCAR (elt));
+ SPLIT_CHAR (c, charset, c1, c2);
+ if (c1 == 0)
+ XCAR (elt) = CHARSET_SYMBOL (charset);
+ }
+ else
+ c = XINT (XCAR (XCAR (elt)));
+ for (i = 0; i < n_realized; i++)
+ {
+ Lisp_Object face_id, font;
+ struct face *face;
+
+ face_id = FONTSET_REF_VIA_BASE (realized[i], c);
+ if (INTEGERP (face_id))
+ {
+ face = FACE_FROM_ID (f, XINT (face_id));
+ if (face->font && face->font_name)
+ {
+ font = build_string (face->font_name);
+ if (NILP (Fmember (font, XCDR (XCDR (elt)))))
+ XCDR (XCDR (elt)) = Fcons (font, XCDR (XCDR (elt)));
+ }
+ }
+ }
}
+ return Fcons (FONTSET_NAME (fontset), val);
+}
- fontset = fs_query_fontset (f, XSTRING (name)->data);
- if (fontset < 0)
- error ("Fontset \"%s\" does not exist", XSTRING (name)->data);
+DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 2, 0,
+ "Return a font name pattern for character CH in fontset NAME.\n\
+If NAME is t, find a font name pattern in the default fontset.")
+ (name, ch)
+ Lisp_Object name, ch;
+{
+ int c, id;
+ Lisp_Object fontset, elt;
- info = Fmake_vector (make_number (3), Qnil);
+ fontset = check_fontset_name (name);
- fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset];
+ CHECK_NUMBER (ch, 1);
+ c = XINT (ch);
+ if (!char_valid_p (c, 1))
+ invalid_character (c);
- XVECTOR (info)->contents[0] = make_number (fontsetp->size);
- XVECTOR (info)->contents[1] = make_number (fontsetp->height);
- val = Qnil;
- for (i = 0; i <= MAX_CHARSET; i++)
- if (fontsetp->fontname[i])
- {
- int font_idx = fontsetp->font_indexes[i];
- Lisp_Object loaded;
-
- if (font_idx == FONT_NOT_OPENED)
- loaded = Qt;
- else if (font_idx == FONT_NOT_FOUND)
- loaded = Qnil;
- else
- loaded
- = build_string ((*get_font_info_func) (f, font_idx)->full_name);
- val = Fcons (Fcons (CHARSET_SYMBOL (i),
- Fcons (build_string (fontsetp->fontname[i]),
- Fcons (loaded, Qnil))),
- val);
- }
- XVECTOR (info)->contents[2] = val;
- return info;
+ elt = FONTSET_REF (fontset, c);
+ if (CONSP (elt))
+ elt = XCDR (elt);
+
+ return elt;
+}
+
+
+DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0,
+ "Return a list of all defined fontset names.")
+ ()
+{
+ Lisp_Object fontset, list;
+ int i;
+
+ list = Qnil;
+ for (i = 0; i < ASIZE (Vfontset_table); i++)
+ {
+ fontset = FONTSET_FROM_ID (i);
+ if (!NILP (fontset)
+ && BASE_FONTSET_P (fontset))
+ list = Fcons (FONTSET_NAME (fontset), list);
+ }
+
+ return list;
}
void
{
int i;
- for (i = 0; i < 256; i++)
- my_strcasetbl[i] = (i >= 'A' && i <= 'Z') ? i + 'a' - 'A' : i;
-
if (!load_font_func)
/* Window system initializer should have set proper functions. */
abort ();
Qfontset = intern ("fontset");
staticpro (&Qfontset);
+ Fput (Qfontset, Qchar_table_extra_slots, make_number (3));
Vcached_fontset_data = Qnil;
staticpro (&Vcached_fontset_data);
- DEFVAR_LISP ("global-fontset-alist", &Vglobal_fontset_alist,
- "Internal data for fontset. Not for external use.\n\
-This is an alist associating fontset names with the lists of fonts\n\
- contained in them.\n\
-Newly created frames make their own fontset database from here.");
- Vglobal_fontset_alist = Qnil;
+ Vfontset_table = Fmake_vector (make_number (32), Qnil);
+ staticpro (&Vfontset_table);
+
+ Vdefault_fontset = Fmake_char_table (Qfontset, Qnil);
+ staticpro (&Vdefault_fontset);
+ FONTSET_ID (Vdefault_fontset) = make_number (0);
+ FONTSET_NAME (Vdefault_fontset)
+ = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
+ FONTSET_ASCII (Vdefault_fontset)
+ = Fcons (make_number (0),
+ build_string ("-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1"));
+ AREF (Vfontset_table, 0) = Vdefault_fontset;
+ next_fontset_id = 1;
DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist,
"Alist of fontname patterns vs corresponding encoding info.\n\
DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition,
"Char table of characters which is not composed relatively.\n\
-If an entry for a character is non-nil, a composite character\n\
+If an entry for a character is non-nil, a composition sequence\n\
which contains that character is displayed so that\n\
the glyph of that character is put without considering\n\
an ascent and descent value of a previous character.");
- Vuse_default_ascent = Qnil;
+ Vignore_relative_composition = Qnil;
DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist,
"Alist of fontname vs list of the alternate fontnames.\n\
DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist,
"Alist of fontset names vs the aliases.");
- Vfontset_alias_alist = Qnil;
+ Vfontset_alias_alist = Fcons (Fcons (FONTSET_NAME (Vdefault_fontset),
+ build_string ("fontset-default")),
+ Qnil);
DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font,
"*Non-nil means highlight characters shown in wrong size fonts somehow.\n\
The drawback is that you will get some garbage left on your screen.");
Vclip_large_size_font = Qt;
+ DEFVAR_LISP ("vertical-centering-font-regexp",
+ &Vvertical_centering_font_regexp,
+ "*Regexp matching font names that require vertical centering on display.\n\
+When a character is displayed with such fonts, the character is displayed\n\
+at the vertival center of lines.");
+ Vvertical_centering_font_regexp = Qnil;
+
defsubr (&Squery_fontset);
defsubr (&Snew_fontset);
defsubr (&Sset_fontset_font);
defsubr (&Sfont_info);
+ defsubr (&Sinternal_char_font);
defsubr (&Sfontset_info);
+ defsubr (&Sfontset_font);
+ defsubr (&Sfontset_list);
}
HCoop / bpt / emacs.git / blobdiff