/* Header for fontset handler.
- Ver.1.0
- Copyright (C) 1995 Free Software Foundation, Inc.
- Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
+ Copyright (C) 1998, 2002, 2003, 2004, 2005,
+ 2006 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1997, 2000
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H14PRO021
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
-#ifndef _FONTSET_H
-#define _FONTSET_H
-
-/*
-
-#define GENERIC_FONT_PTR void
+#ifndef EMACS_FONTSET_H
+#define EMACS_FONTSET_H
/* This data type is used for the font_table field of window system
depending data area (e.g. struct x_display_info on X window). */
/* Charset of characters displayed by the font. */
int charset;
+#ifdef WINDOWSNT
+ /* Codepage of characters that will be displayed by the font. */
+ int codepage;
+#endif
+
/* Maximum bound width over all existing characters of the font. On
X window, this is same as (font->max_bounds.width) */
int size;
- /* Height of the font. On X window, this is same as (font->ascent
- + font->descent). */
+ /* Height of the font. On X window, this is the same as
+ (font->ascent + font->descent). */
int height;
- /* Encodings of the font indexed by CHARSET. The value an integer
+ /* Width of the space glyph of the font. */
+ int space_width;
+
+ /* Average width of glyphs in the font. */
+ int average_width;
+
+ /* 1 iff `vertical-centering-font-regexp' matches this font name.
+ In this case, we render characters at vartical center positions
+ of lines. */
+ int vertical_centering;
+
+ /* Encodings of the font indexed by CHARSET. The value is one of
0, 1, 2, or 3:
0: code points 0x20..0x7F or 0x2020..0x7F7F are used
1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used
consult `font-encoding-alist' to get of the corresponding charset
whose default value is defined in lisp/fontset.el. Since there's
no charset whose id is 1, we use encoding[1] to store the
- encoding information decided by the font itself. */
+ encoding information decided by the font itself.
+
+ If the member `font_encoder' is not NULL, this member is ignored.
+ */
unsigned char encoding[MAX_CHARSET + 1];
/* The baseline position of a font is normally `ascent' value of the
`ascent'. In other words, the value indicates how many bits
higher we should draw a character of the font than normal ASCII
text for a better looking.
-
+
We also have to consider the fact that the concept of `baseline'
differs among languages to which each character belongs. For
instance, baseline should be at the bottom most position of all
struct ccl_program *font_encoder;
};
-#define FONT_NOT_OPENED -1
-#define FONT_NOT_FOUND -2
-
-struct fontset_info
-{
- /* Name of the fontset. */
- char *name;
-
- /* Size of the fontset. This is the same as the size of ASCII font
- of this fontset. */
- int size;
-
- /* Height of the tallest font in the fontset. */
- int height;
-
- /* Table of font name for each character set. */
- char *fontname[MAX_CHARSET + 1];
-
- /* Table of index numbers of fonts indexed by charset. If a font is
- not yet loaded, the value is -1 (FONT_NOT_OPENED). If font
- loading is failed, the value is -2 (FONT_NOT_FOUND). */
- int font_indexes[MAX_CHARSET + 1];
-};
-
-/* This data type is used for the fontset_data field of struct frame. */
+/* A value which may appear in the member `encoding' of struch
+ font_info indicating that a font itself doesn't tell which encoding
+ to be used. */
+#define FONT_ENCODING_NOT_DECIDED 255
-struct fontset_data
-{
- /* A table of pointers to all the fontsets. */
- struct fontset_info **fontset_table;
-
- /* The current capacity of fontset_table. */
- int fontset_table_size;
-
- /* The number of fontsets actually stored in fontset_table.
- fontset_table[n] is used and valid iff 0 <= n < n_fontsets.
- 0 <= n_fontsets <= fontset_table_size. */
- int n_fontsets;
-};
+/* Forward declaration for prototypes. */
+struct frame;
/* The following six are window system dependent functions.
Initialization routine of each window system should set appropriate
x_term_init does this. */
/* Return a pointer to struct font_info of font FONT_IDX of frame F. */
-extern struct font_info *(*get_font_info_func) (/* FRAME_PTR f;
- int font_idx */);
+extern struct font_info *(*get_font_info_func) P_ ((struct frame *f,
+ int font_idx));
/* Return a list of font names which matches PATTERN. See the document of
`x-list-fonts' for more detail. */
-extern Lisp_Object (*list_fonts_func) (/* Lisp_Object pattern, face, frame,
- width */);
+extern Lisp_Object (*list_fonts_func) P_ ((struct frame *f,
+ Lisp_Object pattern,
+ int size,
+ int maxnames));
/* Load a font named NAME for frame F and return a pointer to the
information of the loaded font. If loading is failed, return -1. */
-extern struct font_info *(*load_font_func) (/* FRAME_PTR f; char *name */);
+extern struct font_info *(*load_font_func) P_ ((struct frame *f,
+ char *name, int));
/* Return a pointer to struct font_info of a font named NAME for frame F.
If no such font is loaded, return NULL. */
-extern struct font_info *(*query_font_func) (/* FRAME_PTR f; char *name */);
+extern struct font_info *(*query_font_func) P_ ((struct frame *f, char *name));
/* Additional function for setting fontset or changing fontset
contents of frame F. This function may change the coordinate of
the frame. */
-extern void (*set_frame_fontset_func) (/* FRAME_PTR f; Lisp_Object arg, oldval */);
+extern void (*set_frame_fontset_func) P_ ((struct frame *f, Lisp_Object arg,
+ Lisp_Object oldval));
-/* Check if any window system is used now. */
-extern void (*check_window_system_func) ();
+/* To find a CCL program, fs_load_font calls this function.
+ The argument is a pointer to the struct font_info.
+ This function set the memer `encoder' of the structure. */
+extern void (*find_ccl_program_func) P_ ((struct font_info *));
-extern struct fontset_data *alloc_fontset_data ();
-extern void free_fontset_data ();
-extern struct font_info *fs_load_font ();
-extern Lisp_Object list_fontsets ();
-extern Lisp_Object Vglobal_fontset_alist;
+/* Check if any window system is used now. */
+extern void (*check_window_system_func) P_ ((void));
+
+struct face;
+
+extern void free_face_fontset P_ ((FRAME_PTR, struct face *));
+extern Lisp_Object fontset_font_pattern P_ ((FRAME_PTR, int, int));
+extern int face_suitable_for_char_p P_ ((struct face *, int));
+extern int face_for_char P_ ((FRAME_PTR, struct face *, int));
+extern int make_fontset_for_ascii_face P_ ((FRAME_PTR, int));
+extern void set_default_ascii_font P_ ((Lisp_Object));
+extern struct font_info *fs_load_font P_ ((struct frame *, int, char *, int,
+ struct face *));
+extern int fs_query_fontset P_ ((Lisp_Object, int));
+EXFUN (Fquery_fontset, 2);
+extern Lisp_Object list_fontsets P_ ((struct frame *, Lisp_Object, int));
extern Lisp_Object Qfontset;
-extern Lisp_Object Vuse_default_ascent;
-extern Lisp_Object Valternative_fontname_alist;
-extern Lisp_Object Vhighlight_wrong_size_font;
-extern Lisp_Object Vclip_large_size_font;
-
-#endif /* _FONTSET_H */
+extern Lisp_Object Vuse_default_ascent;
+extern Lisp_Object Vignore_relative_composition;
+extern Lisp_Object Valternate_fontname_alist;
+extern Lisp_Object Vfontset_alias_alist;
+extern Lisp_Object Vvertical_centering_font_regexp;
+
+/* Load a font named FONTNAME for displaying character C. 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. */
+
+#define FS_LOAD_FONT(f, c, fontname, fontset) \
+ fs_load_font (f, c, fontname, fontset, NULL)
+
+#define FS_LOAD_FACE_FONT(f, c, fontname, face) \
+ fs_load_font (f, c, fontname, -1, face)
+
+/* Return an immutable id for font_info FONT_INFO on frame F. The
+ reason for this macro is hat one cannot hold pointers to font_info
+ structures in other data structures, because the table is
+ reallocated in x_list_fonts. */
+
+#define FONT_INFO_ID(F, FONT_INFO) \
+ (FONT_INFO) - (FRAME_X_DISPLAY_INFO ((F))->font_table)
+
+/* Given a font_info id ID, return a pointer to the font_info
+ structure on frame F. If ID is invalid, return null. */
+
+#define FONT_INFO_FROM_ID(F, ID) \
+ (((ID) >= 0 && (ID) < FRAME_X_DISPLAY_INFO ((F))->font_table_size) \
+ ? (FRAME_X_DISPLAY_INFO ((F))->font_table + (ID)) \
+ : 0)
+
+extern Lisp_Object fontset_name P_ ((int));
+extern Lisp_Object fontset_ascii P_ ((int));
+extern int fontset_height P_ ((int));
+
+#endif /* EMACS_FONTSET_H */
+
+/* arch-tag: c27cef7b-3cab-488a-8398-7a4daa96bb77
+ (do not change this comment) */