diff options
| author | Kenichi Handa | 2008-05-14 01:26:25 +0000 |
|---|---|---|
| committer | Kenichi Handa | 2008-05-14 01:26:25 +0000 |
| commit | f36f5a93312e3c1bbb40da7b1717536b037a5e6d (patch) | |
| tree | 23e1197cfe1c84d7ad8d9f4323350941eec32b10 /src/fontset.h | |
| parent | 35027d0ca6108382edc5598d933f555808d43dfb (diff) | |
| download | emacs-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.
Diffstat (limited to 'src/fontset.h')
| -rw-r--r-- | src/fontset.h | 208 |
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 | |||
| 35 | struct 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 | |||
| 146 | enum 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. */ | ||
| 158 | struct 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. */ | ||
| 166 | extern 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. */ | ||
| 171 | extern 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. */ | ||
| 178 | extern 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. */ | ||
| 183 | extern 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. */ | ||
| 188 | extern 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. */ | ||
| 194 | extern void (*find_ccl_program_func) P_ ((struct font_info *)); | ||
| 195 | |||
| 196 | extern 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. */ |
| 200 | extern void (*check_window_system_func) P_ ((void)); | 33 | extern void (*check_window_system_func) P_ ((void)); |
| 201 | 34 | ||
| @@ -207,9 +40,8 @@ extern int face_suitable_for_char_p P_ ((struct face *, int)); | |||
| 207 | extern int face_for_char P_ ((FRAME_PTR, struct face *, int, | 40 | extern int face_for_char P_ ((FRAME_PTR, struct face *, int, |
| 208 | int, Lisp_Object)); | 41 | int, Lisp_Object)); |
| 209 | extern int make_fontset_for_ascii_face P_ ((FRAME_PTR, int, struct face *)); | 42 | extern int make_fontset_for_ascii_face P_ ((FRAME_PTR, int, struct face *)); |
| 210 | extern int new_fontset_from_font_name P_ ((Lisp_Object)); | 43 | extern int fontset_from_font_name P_ ((Lisp_Object)); |
| 211 | extern void set_default_ascii_font P_ ((Lisp_Object)); | 44 | extern void set_default_ascii_font P_ ((Lisp_Object)); |
| 212 | extern struct font_info *fs_load_font P_ ((struct frame *, char *, int)); | ||
| 213 | extern int fs_query_fontset P_ ((Lisp_Object, int)); | 45 | extern int fs_query_fontset P_ ((Lisp_Object, int)); |
| 214 | EXFUN (Fquery_fontset, 2); | 46 | EXFUN (Fquery_fontset, 2); |
| 215 | extern Lisp_Object list_fontsets P_ ((struct frame *, Lisp_Object, int)); | 47 | extern Lisp_Object list_fontsets P_ ((struct frame *, Lisp_Object, int)); |
| @@ -221,49 +53,13 @@ extern Lisp_Object Vfontset_alias_alist; | |||
| 221 | extern Lisp_Object Vvertical_centering_font_regexp; | 53 | extern Lisp_Object Vvertical_centering_font_regexp; |
| 222 | extern Lisp_Object Votf_script_alist; | 54 | extern 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 | |||
| 257 | extern Lisp_Object fontset_name P_ ((int)); | 56 | extern Lisp_Object fontset_name P_ ((int)); |
| 258 | extern Lisp_Object fontset_ascii P_ ((int)); | 57 | extern Lisp_Object fontset_ascii P_ ((int)); |
| 259 | extern int fontset_height P_ ((int)); | 58 | extern int fontset_height P_ ((int)); |
| 260 | 59 | ||
| 261 | #ifdef USE_FONT_BACKEND | ||
| 262 | struct font; | 60 | struct font; |
| 263 | extern int face_for_font P_ ((struct frame *, struct font *, struct face *)); | 61 | extern int face_for_font P_ ((struct frame *, Lisp_Object, struct face *)); |
| 264 | extern int new_fontset_from_font P_ ((Lisp_Object)); | 62 | extern int new_fontset_from_font P_ ((Lisp_Object)); |
| 265 | extern 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 | ||