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authorKenichi Handa2008-05-14 01:26:25 +0000
committerKenichi Handa2008-05-14 01:26:25 +0000
commitf36f5a93312e3c1bbb40da7b1717536b037a5e6d (patch)
tree23e1197cfe1c84d7ad8d9f4323350941eec32b10
parent35027d0ca6108382edc5598d933f555808d43dfb (diff)
downloademacs-f36f5a93312e3c1bbb40da7b1717536b037a5e6d.tar.gz
emacs-f36f5a93312e3c1bbb40da7b1717536b037a5e6d.zip
(struct font_info): Delete it. Most memnbers go to
struct font. (FONT_ENCODING_NOT_DECIDED): Moved to font.h. (enum FONT_SPEC_INDEX): Delete it. (font_info, list_fonts_func, load_font_func, query_font_func) (set_frame_fontset_func, find_ccl_program_func) (get_font_repertory_func, new_fontset_from_font_name): Delete externs. (fontset_from_font_name): Extern it. (FS_LOAD_FONT, FONT_INFO_ID, FONT_INFO_FROM_ID) (FONT_INFO_FROM_FACE): Deleted. (face_for_font): Adjust prototype.
-rw-r--r--src/fontset.h208
1 files changed, 2 insertions, 206 deletions
diff --git a/src/fontset.h b/src/fontset.h
index c850ca3c9d8..8d84a7828d2 100644
--- a/src/fontset.h
+++ b/src/fontset.h
@@ -29,173 +29,6 @@ Boston, MA 02110-1301, USA. */
29#ifndef EMACS_FONTSET_H 29#ifndef EMACS_FONTSET_H
30#define EMACS_FONTSET_H 30#define EMACS_FONTSET_H
31 31
32/* This data type is used for the font_table field of window system
33 depending data area (e.g. struct x_display_info on X window). */
34
35struct font_info
36{
37 /* Pointer to window system dependent font structure. On X window,
38 this value should be coerced to (XFontStruct *). */
39 void *font;
40
41 /* Index number of the font. */
42 int font_idx;
43
44 /* Name to be used to find the font. */
45 char *name;
46
47 /* Full name of the font given by a window system. */
48 char *full_name;
49
50 /* Charset to encode a character code into a glyph code of the
51 font. */
52 int charset;
53
54#ifdef WINDOWSNT
55 /* Codepage of characters that will be displayed by the font. */
56 int codepage;
57#endif
58
59 /* Maximum bound width over all existing characters of the font. On
60 X window, this is same as (font->max_bounds.width) */
61 int size;
62
63 /* Height of the font. On X window, this is the same as
64 (font->ascent + font->descent). */
65 int height;
66
67 /* Width of the space glyph of the font. */
68 int space_width;
69
70 /* Average width of glyphs in the font. */
71 int average_width;
72
73 /* 1 if `vertical-centering-font-regexp' matches this font name.
74 In this case, we render characters at vartical center positions
75 of lines. */
76 int vertical_centering;
77
78 /* Encoding type of the font. The value is one of
79 0, 1, 2, or 3:
80 0: code points 0x20..0x7F or 0x2020..0x7F7F are used
81 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used
82 2: code points 0x20A0..0x7FFF are used
83 3: code points 0xA020..0xFF7F are used
84 If the member `font_encoder' is not NULL, this member is ignored.
85 */
86 unsigned char encoding_type;
87
88 /* The baseline position of a font is normally `ascent' value of the
89 font. However, there exists many fonts which don't set `ascent'
90 an appropriate value to be used as baseline position. This is
91 typical in such ASCII fonts which are designed to be used with
92 Chinese, Japanese, Korean characters. When we use mixture of
93 such fonts and normal fonts (having correct `ascent' value), a
94 display line gets very ugly. Since we have no way to fix it
95 automatically, it is users responsibility to supply well designed
96 fonts or correct `ascent' value of fonts. But, the latter
97 requires heavy work (modifying all bitmap data in BDF files).
98 So, Emacs accepts a private font property
99 `_MULE_BASELINE_OFFSET'. If a font has this property, we
100 calculate the baseline position by subtracting the value from
101 `ascent'. In other words, the value indicates how many bits
102 higher we should draw a character of the font than normal ASCII
103 text for a better looking.
104
105 We also have to consider the fact that the concept of `baseline'
106 differs among languages to which each character belongs. For
107 instance, baseline should be at the bottom most position of all
108 glyphs for Chinese, Japanese, and Korean. But, many of existing
109 fonts for those characters doesn't have correct `ascent' values
110 because they are designed to be used with ASCII fonts. To
111 display characters of different language on the same line, the
112 best way will be to arrange them in the middle of the line. So,
113 in such a case, again, we utilize the font property
114 `_MULE_BASELINE_OFFSET'. If the value is larger than `ascent' we
115 calculate baseline so that a character is arranged in the middle
116 of a line. */
117
118 int baseline_offset;
119
120 /* Non zero means a character should be composed at a position
121 relative to the height (or depth) of previous glyphs in the
122 following cases:
123 (1) The bottom of the character is higher than this value. In
124 this case, the character is drawn above the previous glyphs.
125 (2) The top of the character is lower than 0 (i.e. baseline
126 height). In this case, the character is drawn beneath the
127 previous glyphs.
128
129 This value is taken from a private font property
130 `_MULE_RELATIVE_COMPOSE' which is introduced by Emacs. */
131 int relative_compose;
132
133 /* Non zero means an ascent value to be used for a character
134 registered in char-table `use-default-ascent'. */
135 int default_ascent;
136
137 /* CCL program to calculate code points of the font. */
138 struct ccl_program *font_encoder;
139};
140
141/* A value which may appear in the member `encoding' of struch
142 font_info indicating that a font itself doesn't tell which encoding
143 to be used. */
144#define FONT_ENCODING_NOT_DECIDED 255
145
146enum FONT_SPEC_INDEX
147 {
148 FONT_SPEC_FAMILY_INDEX,
149 FONT_SPEC_WEIGHT_INDEX,
150 FONT_SPEC_SLANT_INDEX,
151 FONT_SPEC_SWIDTH_INDEX,
152 FONT_SPEC_ADSTYLE_INDEX,
153 FONT_SPEC_REGISTRY_INDEX,
154 FONT_SPEC_MAX_INDEX
155 };
156
157/* Forward declaration for prototypes. */
158struct frame;
159
160/* The following six are window system dependent functions.
161 Initialization routine of each window system should set appropriate
162 functions to these variables. For instance, in case of X window,
163 x_term_init does this. */
164
165/* Return a pointer to struct font_info of font FONT_IDX of frame F. */
166extern struct font_info *(*get_font_info_func) P_ ((struct frame *f,
167 int font_idx));
168
169/* Return a list of font names which matches PATTERN. See the document of
170 `x-list-fonts' for more detail. */
171extern Lisp_Object (*list_fonts_func) P_ ((struct frame *f,
172 Lisp_Object pattern,
173 int size,
174 int maxnames));
175
176/* Load a font named NAME for frame F and return a pointer to the
177 information of the loaded font. If loading is failed, return -1. */
178extern struct font_info *(*load_font_func) P_ ((struct frame *f,
179 char *name, int));
180
181/* Return a pointer to struct font_info of a font named NAME for frame F.
182 If no such font is loaded, return NULL. */
183extern struct font_info *(*query_font_func) P_ ((struct frame *f, char *name));
184
185/* Additional function for setting fontset or changing fontset
186 contents of frame F. This function may change the coordinate of
187 the frame. */
188extern void (*set_frame_fontset_func) P_ ((struct frame *f, Lisp_Object arg,
189 Lisp_Object oldval));
190
191/* To find a CCL program, fs_load_font calls this function.
192 The argument is a pointer to the struct font_info.
193 This function set the memer `encoder' of the structure. */
194extern void (*find_ccl_program_func) P_ ((struct font_info *));
195
196extern Lisp_Object (*get_font_repertory_func) P_ ((struct frame *,
197 struct font_info *));
198
199/* Check if any window system is used now. */ 32/* Check if any window system is used now. */
200extern void (*check_window_system_func) P_ ((void)); 33extern void (*check_window_system_func) P_ ((void));
201 34
@@ -207,9 +40,8 @@ extern int face_suitable_for_char_p P_ ((struct face *, int));
207extern int face_for_char P_ ((FRAME_PTR, struct face *, int, 40extern int face_for_char P_ ((FRAME_PTR, struct face *, int,
208 int, Lisp_Object)); 41 int, Lisp_Object));
209extern int make_fontset_for_ascii_face P_ ((FRAME_PTR, int, struct face *)); 42extern int make_fontset_for_ascii_face P_ ((FRAME_PTR, int, struct face *));
210extern int new_fontset_from_font_name P_ ((Lisp_Object)); 43extern int fontset_from_font_name P_ ((Lisp_Object));
211extern void set_default_ascii_font P_ ((Lisp_Object)); 44extern void set_default_ascii_font P_ ((Lisp_Object));
212extern struct font_info *fs_load_font P_ ((struct frame *, char *, int));
213extern int fs_query_fontset P_ ((Lisp_Object, int)); 45extern int fs_query_fontset P_ ((Lisp_Object, int));
214EXFUN (Fquery_fontset, 2); 46EXFUN (Fquery_fontset, 2);
215extern Lisp_Object list_fontsets P_ ((struct frame *, Lisp_Object, int)); 47extern Lisp_Object list_fontsets P_ ((struct frame *, Lisp_Object, int));
@@ -221,49 +53,13 @@ extern Lisp_Object Vfontset_alias_alist;
221extern Lisp_Object Vvertical_centering_font_regexp; 53extern Lisp_Object Vvertical_centering_font_regexp;
222extern Lisp_Object Votf_script_alist; 54extern Lisp_Object Votf_script_alist;
223 55
224/* Load a font named FONTNAME on frame F. All fonts for frame F is
225 stored in a table pointed by FONT_TABLE. Return a pointer to the
226 struct font_info of the loaded font. If loading fails, return
227 NULL. */
228
229#define FS_LOAD_FONT(f, fontname) fs_load_font (f, fontname, -1)
230
231
232/* Return an immutable id for font_info FONT_INFO on frame F. The
233 reason for this macro is hat one cannot hold pointers to font_info
234 structures in other data structures, because the table is
235 reallocated in x_list_fonts. */
236
237#define FONT_INFO_ID(F, FONT_INFO) \
238 (FONT_INFO) - (FRAME_X_DISPLAY_INFO ((F))->font_table)
239
240/* Given a font_info id ID, return a pointer to the font_info
241 structure on frame F. If ID is invalid, return null. */
242
243#define FONT_INFO_FROM_ID(F, ID) \
244 (((ID) >= 0 && (ID) < FRAME_X_DISPLAY_INFO ((F))->font_table_size) \
245 ? (FRAME_X_DISPLAY_INFO ((F))->font_table + (ID)) \
246 : 0)
247
248#ifdef USE_FONT_BACKEND
249#define FONT_INFO_FROM_FACE(F, FACE) \
250 (enable_font_backend ? (FACE)->font_info \
251 : FONT_INFO_FROM_ID ((F), (FACE)->font_info_id))
252#else /* not USE_FONT_BACKEND */
253#define FONT_INFO_FROM_FACE(F, FACE) \
254 FONT_INFO_FROM_ID ((F), (FACE)->font_info_id)
255#endif /* not USE_FONT_BACKEND */
256
257extern Lisp_Object fontset_name P_ ((int)); 56extern Lisp_Object fontset_name P_ ((int));
258extern Lisp_Object fontset_ascii P_ ((int)); 57extern Lisp_Object fontset_ascii P_ ((int));
259extern int fontset_height P_ ((int)); 58extern int fontset_height P_ ((int));
260 59
261#ifdef USE_FONT_BACKEND
262struct font; 60struct font;
263extern int face_for_font P_ ((struct frame *, struct font *, struct face *)); 61extern int face_for_font P_ ((struct frame *, Lisp_Object, struct face *));
264extern int new_fontset_from_font P_ ((Lisp_Object)); 62extern int new_fontset_from_font P_ ((Lisp_Object));
265extern struct font *fontset_ascii_font P_ ((FRAME_PTR, int));
266#endif /* USE_FONT_BACKEND */
267 63
268#endif /* EMACS_FONTSET_H */ 64#endif /* EMACS_FONTSET_H */
269 65