| 1 | /* Fontset handler. |
| 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
| 3 | Free Software Foundation, Inc. |
| 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 5 | 2005, 2006, 2007, 2008 |
| 6 | National Institute of Advanced Industrial Science and Technology (AIST) |
| 7 | Registration Number H14PRO021 |
| 8 | Copyright (C) 2003, 2006 |
| 9 | National Institute of Advanced Industrial Science and Technology (AIST) |
| 10 | Registration Number H13PRO009 |
| 11 | |
| 12 | This file is part of GNU Emacs. |
| 13 | |
| 14 | GNU Emacs is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation; either version 3, or (at your option) |
| 17 | any later version. |
| 18 | |
| 19 | GNU Emacs is distributed in the hope that it will be useful, |
| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | GNU General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with GNU Emacs; see the file COPYING. If not, write to |
| 26 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 27 | Boston, MA 02110-1301, USA. */ |
| 28 | |
| 29 | /* #define FONTSET_DEBUG */ |
| 30 | |
| 31 | #include <config.h> |
| 32 | |
| 33 | #ifdef FONTSET_DEBUG |
| 34 | #include <stdio.h> |
| 35 | #endif |
| 36 | |
| 37 | #include "lisp.h" |
| 38 | #include "blockinput.h" |
| 39 | #include "buffer.h" |
| 40 | #include "character.h" |
| 41 | #include "charset.h" |
| 42 | #include "ccl.h" |
| 43 | #include "keyboard.h" |
| 44 | #include "frame.h" |
| 45 | #include "dispextern.h" |
| 46 | #include "intervals.h" |
| 47 | #include "fontset.h" |
| 48 | #include "window.h" |
| 49 | #ifdef HAVE_X_WINDOWS |
| 50 | #include "xterm.h" |
| 51 | #endif |
| 52 | #ifdef WINDOWSNT |
| 53 | #include "w32term.h" |
| 54 | #endif |
| 55 | #ifdef MAC_OS |
| 56 | #include "macterm.h" |
| 57 | #endif |
| 58 | #include "termhooks.h" |
| 59 | |
| 60 | #include "font.h" |
| 61 | |
| 62 | #undef xassert |
| 63 | #ifdef FONTSET_DEBUG |
| 64 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
| 65 | #undef INLINE |
| 66 | #define INLINE |
| 67 | #else /* not FONTSET_DEBUG */ |
| 68 | #define xassert(X) (void) 0 |
| 69 | #endif /* not FONTSET_DEBUG */ |
| 70 | |
| 71 | EXFUN (Fclear_face_cache, 1); |
| 72 | |
| 73 | /* FONTSET |
| 74 | |
| 75 | A fontset is a collection of font related information to give |
| 76 | similar appearance (style, etc) of characters. A fontset has two |
| 77 | roles. One is to use for the frame parameter `font' as if it is an |
| 78 | ASCII font. In that case, Emacs uses the font specified for |
| 79 | `ascii' script for the frame's default font. |
| 80 | |
| 81 | Another role, the more important one, is to provide information |
| 82 | about which font to use for each non-ASCII character. |
| 83 | |
| 84 | There are two kinds of fontsets; base and realized. A base fontset |
| 85 | is created by `new-fontset' from Emacs Lisp explicitly. A realized |
| 86 | fontset is created implicitly when a face is realized for ASCII |
| 87 | characters. A face is also realized for non-ASCII characters based |
| 88 | on an ASCII face. All of non-ASCII faces based on the same ASCII |
| 89 | face share the same realized fontset. |
| 90 | |
| 91 | A fontset object is implemented by a char-table whose default value |
| 92 | and parent are always nil. |
| 93 | |
| 94 | An element of a base fontset is a vector of FONT-DEFs which itself |
| 95 | is a vector [ FONT-SPEC ENCODING REPERTORY ]. |
| 96 | |
| 97 | FONT-SPEC is a font-spec created by `font-spec' or |
| 98 | ( FAMILY . REGISTRY ) |
| 99 | or |
| 100 | FONT-NAME |
| 101 | where FAMILY, REGISTRY, and FONT-NAME are strings. |
| 102 | |
| 103 | ENCODING is a charset ID that can convert characters to glyph codes |
| 104 | of the corresponding font. |
| 105 | |
| 106 | REPERTORY is a charset ID, a char-table, or nil. If REPERTORY is a |
| 107 | charset ID, the repertory of the charset exactly matches with that |
| 108 | of the font. If REPERTORY is a char-table, all characters who have |
| 109 | a non-nil value in the table are supported. If REPERTORY is nil, |
| 110 | we consult with the font itself to get the repertory. |
| 111 | |
| 112 | ENCODING and REPERTORY are extracted from the variable |
| 113 | Vfont_encoding_alist by using a font name generated from FONT-SPEC |
| 114 | (if it is a vector) or FONT-NAME as a matching target. |
| 115 | |
| 116 | |
| 117 | An element of a realized fontset is nil or t, or has this form: |
| 118 | |
| 119 | [CHARSET-ORDERED-LIST-TICK PREFERRED-CHARSET-ID PREFERRED-FAMILY |
| 120 | RFONT-DEF0 RFONT-DEF1 ...]. |
| 121 | |
| 122 | RFONT-DEFn (i.e. Realized FONT-DEF) has this form: |
| 123 | |
| 124 | [ FACE-ID FONT-INDEX FONT-DEF OPENED-FONT-NAME ] |
| 125 | |
| 126 | RFONT-DEFn is automatically reordered by the current charset |
| 127 | priority list. |
| 128 | |
| 129 | The value nil means that we have not yet generated the above vector |
| 130 | from the base of the fontset. |
| 131 | |
| 132 | The value t means that no font is available for the corresponding |
| 133 | range of characters. |
| 134 | |
| 135 | |
| 136 | A fontset has 9 extra slots. |
| 137 | |
| 138 | The 1st slot: the ID number of the fontset |
| 139 | |
| 140 | The 2nd slot: |
| 141 | base: the name of the fontset |
| 142 | realized: nil |
| 143 | |
| 144 | The 3rd slot: |
| 145 | base: nil |
| 146 | realized: the base fontset |
| 147 | |
| 148 | The 4th slot: |
| 149 | base: nil |
| 150 | realized: the frame that the fontset belongs to |
| 151 | |
| 152 | The 5th slot: |
| 153 | base: the font name for ASCII characters |
| 154 | realized: nil |
| 155 | |
| 156 | The 6th slot: |
| 157 | base: nil |
| 158 | realized: the ID number of a face to use for characters that |
| 159 | has no font in a realized fontset. |
| 160 | |
| 161 | The 7th slot: |
| 162 | base: nil |
| 163 | realized: Alist of font index vs the corresponding repertory |
| 164 | char-table. |
| 165 | |
| 166 | The 8th slot: |
| 167 | base: nil |
| 168 | realized: If the base is not the default fontset, a fontset |
| 169 | realized from the default fontset, else nil. |
| 170 | |
| 171 | The 9th slot: |
| 172 | base: Same as element value (but for fallback fonts). |
| 173 | realized: Likewise. |
| 174 | |
| 175 | All fontsets are recorded in the vector Vfontset_table. |
| 176 | |
| 177 | |
| 178 | DEFAULT FONTSET |
| 179 | |
| 180 | There's a special base fontset named `default fontset' which |
| 181 | defines the default font specifications. When a base fontset |
| 182 | doesn't specify a font for a specific character, the corresponding |
| 183 | value in the default fontset is used. |
| 184 | |
| 185 | The parent of a realized fontset created for such a face that has |
| 186 | no fontset is the default fontset. |
| 187 | |
| 188 | |
| 189 | These structures are hidden from the other codes than this file. |
| 190 | The other codes handle fontsets only by their ID numbers. They |
| 191 | usually use the variable name `fontset' for IDs. But, in this |
| 192 | file, we always use varialbe name `id' for IDs, and name `fontset' |
| 193 | for an actual fontset object, i.e., char-table. |
| 194 | |
| 195 | */ |
| 196 | |
| 197 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ |
| 198 | |
| 199 | extern Lisp_Object Qfont; |
| 200 | static Lisp_Object Qfontset; |
| 201 | static Lisp_Object Qfontset_info; |
| 202 | static Lisp_Object Qprepend, Qappend; |
| 203 | static Lisp_Object Qlatin; |
| 204 | |
| 205 | /* Vector containing all fontsets. */ |
| 206 | static Lisp_Object Vfontset_table; |
| 207 | |
| 208 | /* Next possibly free fontset ID. Usually this keeps the minimum |
| 209 | fontset ID not yet used. */ |
| 210 | static int next_fontset_id; |
| 211 | |
| 212 | /* The default fontset. This gives default FAMILY and REGISTRY of |
| 213 | font for each character. */ |
| 214 | static Lisp_Object Vdefault_fontset; |
| 215 | |
| 216 | Lisp_Object Vfont_encoding_alist; |
| 217 | Lisp_Object Vfont_encoding_charset_alist; |
| 218 | Lisp_Object Vuse_default_ascent; |
| 219 | Lisp_Object Vignore_relative_composition; |
| 220 | Lisp_Object Valternate_fontname_alist; |
| 221 | Lisp_Object Vfontset_alias_alist; |
| 222 | Lisp_Object Vvertical_centering_font_regexp; |
| 223 | Lisp_Object Votf_script_alist; |
| 224 | |
| 225 | /* The following six are declarations of callback functions depending |
| 226 | on window system. See the comments in src/fontset.h for more |
| 227 | detail. */ |
| 228 | |
| 229 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ |
| 230 | struct font_info *(*get_font_info_func) P_ ((FRAME_PTR f, int font_idx)); |
| 231 | |
| 232 | /* Return a list of font names which matches PATTERN. See the documentation |
| 233 | of `x-list-fonts' for more details. */ |
| 234 | Lisp_Object (*list_fonts_func) P_ ((struct frame *f, |
| 235 | Lisp_Object pattern, |
| 236 | int size, |
| 237 | int maxnames)); |
| 238 | |
| 239 | /* Load a font named NAME for frame F and return a pointer to the |
| 240 | information of the loaded font. If loading is failed, return 0. */ |
| 241 | struct font_info *(*load_font_func) P_ ((FRAME_PTR f, char *name, int)); |
| 242 | |
| 243 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ |
| 244 | struct font_info *(*query_font_func) P_ ((FRAME_PTR f, char *name)); |
| 245 | |
| 246 | /* Additional function for setting fontset or changing fontset |
| 247 | contents of frame F. */ |
| 248 | void (*set_frame_fontset_func) P_ ((FRAME_PTR f, Lisp_Object arg, |
| 249 | Lisp_Object oldval)); |
| 250 | |
| 251 | /* To find a CCL program, fs_load_font calls this function. |
| 252 | The argument is a pointer to the struct font_info. |
| 253 | This function set the member `encoder' of the structure. */ |
| 254 | void (*find_ccl_program_func) P_ ((struct font_info *)); |
| 255 | |
| 256 | Lisp_Object (*get_font_repertory_func) P_ ((struct frame *, |
| 257 | struct font_info *)); |
| 258 | |
| 259 | /* Check if any window system is used now. */ |
| 260 | void (*check_window_system_func) P_ ((void)); |
| 261 | |
| 262 | |
| 263 | /* Prototype declarations for static functions. */ |
| 264 | static Lisp_Object fontset_add P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
| 265 | Lisp_Object)); |
| 266 | static void reorder_font_vector P_ ((Lisp_Object, int, Lisp_Object)); |
| 267 | static Lisp_Object fontset_font P_ ((Lisp_Object, int, struct face *, int)); |
| 268 | static Lisp_Object make_fontset P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
| 269 | static Lisp_Object fontset_pattern_regexp P_ ((Lisp_Object)); |
| 270 | static void accumulate_script_ranges P_ ((Lisp_Object, Lisp_Object, |
| 271 | Lisp_Object)); |
| 272 | Lisp_Object find_font_encoding P_ ((Lisp_Object)); |
| 273 | |
| 274 | static void set_fontset_font P_ ((Lisp_Object, Lisp_Object)); |
| 275 | |
| 276 | #ifdef FONTSET_DEBUG |
| 277 | |
| 278 | /* Return 1 if ID is a valid fontset id, else return 0. */ |
| 279 | |
| 280 | static int |
| 281 | fontset_id_valid_p (id) |
| 282 | int id; |
| 283 | { |
| 284 | return (id >= 0 && id < ASIZE (Vfontset_table) - 1); |
| 285 | } |
| 286 | |
| 287 | #endif |
| 288 | |
| 289 | |
| 290 | \f |
| 291 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ |
| 292 | |
| 293 | /* Return the fontset with ID. No check of ID's validness. */ |
| 294 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) |
| 295 | |
| 296 | /* Macros to access special values of FONTSET. */ |
| 297 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] |
| 298 | |
| 299 | /* Macros to access special values of (base) FONTSET. */ |
| 300 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] |
| 301 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4] |
| 302 | |
| 303 | /* Macros to access special values of (realized) FONTSET. */ |
| 304 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2] |
| 305 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3] |
| 306 | #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5] |
| 307 | #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6] |
| 308 | #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7] |
| 309 | |
| 310 | /* For both base and realized fontset. */ |
| 311 | #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8] |
| 312 | |
| 313 | #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset))) |
| 314 | |
| 315 | |
| 316 | /* Return the element of FONTSET for the character C. If FONTSET is a |
| 317 | base fontset other then the default fontset and FONTSET doesn't |
| 318 | contain information for C, return the information in the default |
| 319 | fontset. */ |
| 320 | |
| 321 | #define FONTSET_REF(fontset, c) \ |
| 322 | (EQ (fontset, Vdefault_fontset) \ |
| 323 | ? CHAR_TABLE_REF (fontset, c) \ |
| 324 | : fontset_ref ((fontset), (c))) |
| 325 | |
| 326 | static Lisp_Object |
| 327 | fontset_ref (fontset, c) |
| 328 | Lisp_Object fontset; |
| 329 | int c; |
| 330 | { |
| 331 | Lisp_Object elt; |
| 332 | |
| 333 | elt = CHAR_TABLE_REF (fontset, c); |
| 334 | if (NILP (elt) && ! EQ (fontset, Vdefault_fontset) |
| 335 | /* Don't check Vdefault_fontset for a realized fontset. */ |
| 336 | && NILP (FONTSET_BASE (fontset))) |
| 337 | elt = CHAR_TABLE_REF (Vdefault_fontset, c); |
| 338 | return elt; |
| 339 | } |
| 340 | |
| 341 | /* Set elements of FONTSET for characters in RANGE to the value ELT. |
| 342 | RANGE is a cons (FROM . TO), where FROM and TO are character codes |
| 343 | specifying a range. */ |
| 344 | |
| 345 | #define FONTSET_SET(fontset, range, elt) \ |
| 346 | Fset_char_table_range ((fontset), (range), (elt)) |
| 347 | |
| 348 | |
| 349 | /* Modify the elements of FONTSET for characters in RANGE by replacing |
| 350 | with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM |
| 351 | and TO are character codes specifying a range. If ADD is nil, |
| 352 | replace with ELT, if ADD is `prepend', prepend ELT, otherwise, |
| 353 | append ELT. */ |
| 354 | |
| 355 | #define FONTSET_ADD(fontset, range, elt, add) \ |
| 356 | (NILP (add) \ |
| 357 | ? (NILP (range) \ |
| 358 | ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \ |
| 359 | : Fset_char_table_range ((fontset), (range), \ |
| 360 | Fmake_vector (make_number (1), (elt)))) \ |
| 361 | : fontset_add ((fontset), (range), (elt), (add))) |
| 362 | |
| 363 | static Lisp_Object |
| 364 | fontset_add (fontset, range, elt, add) |
| 365 | Lisp_Object fontset, range, elt, add; |
| 366 | { |
| 367 | Lisp_Object args[2]; |
| 368 | int idx = (EQ (add, Qappend) ? 0 : 1); |
| 369 | |
| 370 | args[1 - idx] = Fmake_vector (make_number (1), elt); |
| 371 | |
| 372 | if (CONSP (range)) |
| 373 | { |
| 374 | int from = XINT (XCAR (range)); |
| 375 | int to = XINT (XCDR (range)); |
| 376 | int from1, to1; |
| 377 | |
| 378 | do { |
| 379 | args[idx] = char_table_ref_and_range (fontset, from, &from1, &to1); |
| 380 | if (to < to1) |
| 381 | to1 = to; |
| 382 | char_table_set_range (fontset, from, to1, |
| 383 | NILP (args[idx]) ? args[1 - idx] |
| 384 | : Fvconcat (2, args)); |
| 385 | from = to1 + 1; |
| 386 | } while (from < to); |
| 387 | } |
| 388 | else |
| 389 | { |
| 390 | args[idx] = FONTSET_FALLBACK (fontset); |
| 391 | FONTSET_FALLBACK (fontset) |
| 392 | = NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args); |
| 393 | } |
| 394 | return Qnil; |
| 395 | } |
| 396 | |
| 397 | |
| 398 | /* Update FONT-GROUP which has this form: |
| 399 | [CHARSET-ORDERED-LIST-TICK PREFERRED-CHARSET-ID PREFERRED-FAMILY |
| 400 | RFONT-DEF0 RFONT-DEF1 ...]. |
| 401 | Reorder RFONT-DEFs according to the current order of charset |
| 402 | (Vcharset_ordered_list), and update CHARSET-ORDERED-LIST-TICK to |
| 403 | the latest value. */ |
| 404 | |
| 405 | static void |
| 406 | reorder_font_vector (font_group, charset_id, family) |
| 407 | Lisp_Object font_group; |
| 408 | int charset_id; |
| 409 | Lisp_Object family; |
| 410 | { |
| 411 | Lisp_Object list, *new_vec; |
| 412 | int size; |
| 413 | int *charset_id_table; |
| 414 | int i, idx; |
| 415 | Lisp_Object preferred_by_charset, preferred_by_family; |
| 416 | |
| 417 | size = ASIZE (font_group) - 3; |
| 418 | /* Exclude the tailing nil elements from the reordering. */ |
| 419 | while (NILP (AREF (font_group, size - 1))) size--; |
| 420 | charset_id_table = (int *) alloca (sizeof (int) * size); |
| 421 | new_vec = (Lisp_Object *) alloca (sizeof (Lisp_Object) * size); |
| 422 | |
| 423 | /* At first, extract ENCODING (a chaset ID) from RFONT_DEF which |
| 424 | has this form: |
| 425 | [FACE-ID FONT-INDEX [ FONT-SPEC ENCODING REPERTORY ]] |
| 426 | In addtion, if RFONT_DEF is preferred by family or charset, store |
| 427 | it from the start of new_vec. */ |
| 428 | for (i = 0, idx = 0; i < size; i++) |
| 429 | { |
| 430 | Lisp_Object rfont_def = AREF (font_group, i + 3); |
| 431 | Lisp_Object font_spec = AREF (AREF (rfont_def, 2), 0); |
| 432 | Lisp_Object this_family = AREF (font_spec, FONT_FAMILY_INDEX); |
| 433 | int id = XINT (AREF (AREF (rfont_def, 2), 1)); |
| 434 | struct charset *charset = CHARSET_FROM_ID (id); |
| 435 | |
| 436 | charset_id_table[i] = -1; |
| 437 | if (! NILP (this_family) |
| 438 | && (fast_string_match_ignore_case (family, SYMBOL_NAME (this_family)) |
| 439 | >= 0)) |
| 440 | { |
| 441 | if (idx > 0) |
| 442 | memmove (new_vec + 1, new_vec, sizeof (Lisp_Object) * idx); |
| 443 | new_vec[0] = rfont_def; |
| 444 | idx++; |
| 445 | ASET (font_group, i + 3, Qnil); |
| 446 | } |
| 447 | else if (id == charset_id) |
| 448 | { |
| 449 | new_vec[idx++] = rfont_def; |
| 450 | ASET (font_group, i + 3, Qnil); |
| 451 | } |
| 452 | else if (! charset->supplementary_p) |
| 453 | charset_id_table[i] = id; |
| 454 | } |
| 455 | |
| 456 | if (idx == 0 |
| 457 | && (XINT (AREF (font_group, 0)) == charset_ordered_list_tick)) |
| 458 | /* No need of reordering. */ |
| 459 | return; |
| 460 | |
| 461 | ASET (font_group, 0, make_number (charset_ordered_list_tick)); |
| 462 | ASET (font_group, 1, make_number (charset_id)); |
| 463 | ASET (font_group, 2, family); |
| 464 | |
| 465 | /* Then, store the remaining RFONT-DEFs in NEW_VEC in the correct |
| 466 | order. */ |
| 467 | for (list = Vcharset_ordered_list; idx < size; list = XCDR (list)) |
| 468 | { |
| 469 | int id = XINT (XCAR (list)); |
| 470 | struct charset *charset = CHARSET_FROM_ID (id); |
| 471 | |
| 472 | if (charset->supplementary_p) |
| 473 | break; |
| 474 | for (i = 0; i < size; i++) |
| 475 | if (charset_id_table[i] == XINT (XCAR (list)) |
| 476 | && ! NILP (AREF (font_group, i + 3))) |
| 477 | { |
| 478 | new_vec[idx++] = AREF (font_group, i + 3); |
| 479 | ASET (font_group, i + 3, Qnil); |
| 480 | } |
| 481 | } |
| 482 | for (i = 0; i < size; i++) |
| 483 | if (! NILP (AREF (font_group, i + 3))) |
| 484 | new_vec[idx++] = AREF (font_group, i + 3); |
| 485 | |
| 486 | /* At last, update elements of FONT-GROUP. */ |
| 487 | for (i = 0; i < size; i++) |
| 488 | ASET (font_group, i + 3, new_vec[i]); |
| 489 | } |
| 490 | |
| 491 | |
| 492 | /* Load a font matching the font related attributes in FACE->lface and |
| 493 | font pattern in FONT_DEF of FONTSET, and return an index of the |
| 494 | font. FONT_DEF has this form: |
| 495 | [ FONT-SPEC ENCODING REPERTORY ] |
| 496 | If REPERTORY is nil, generate a char-table representing the font |
| 497 | repertory by looking into the font itself. */ |
| 498 | |
| 499 | extern Lisp_Object QCname; |
| 500 | |
| 501 | static int |
| 502 | load_font_get_repertory (f, face, font_def, fontset) |
| 503 | FRAME_PTR f; |
| 504 | struct face *face; |
| 505 | Lisp_Object font_def; |
| 506 | Lisp_Object fontset; |
| 507 | { |
| 508 | char *font_name; |
| 509 | struct font_info *font_info; |
| 510 | int charset; |
| 511 | Lisp_Object font_spec, name; |
| 512 | |
| 513 | font_spec = AREF (font_def, 0); |
| 514 | name = Ffont_get (font_spec, QCname); |
| 515 | if (! NILP (name)) |
| 516 | font_name = choose_face_font (f, face->lface, name, NULL); |
| 517 | else |
| 518 | font_name = choose_face_font (f, face->lface, font_spec, NULL); |
| 519 | charset = XINT (AREF (font_def, 1)); |
| 520 | if (! (font_info = fs_load_font (f, font_name, charset))) |
| 521 | return -1; |
| 522 | |
| 523 | if (NILP (AREF (font_def, 2)) |
| 524 | && NILP (Fassq (make_number (font_info->font_idx), |
| 525 | FONTSET_REPERTORY (fontset)))) |
| 526 | { |
| 527 | /* We must look into the font to get the correct repertory as a |
| 528 | char-table. */ |
| 529 | Lisp_Object repertory; |
| 530 | |
| 531 | repertory = (*get_font_repertory_func) (f, font_info); |
| 532 | FONTSET_REPERTORY (fontset) |
| 533 | = Fcons (Fcons (make_number (font_info->font_idx), repertory), |
| 534 | FONTSET_REPERTORY (fontset)); |
| 535 | } |
| 536 | |
| 537 | return font_info->font_idx; |
| 538 | } |
| 539 | |
| 540 | static Lisp_Object fontset_find_font P_ ((Lisp_Object, int, struct face *, |
| 541 | int, int)); |
| 542 | |
| 543 | /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the |
| 544 | character C. If no font is found, return Qnil if there's a |
| 545 | possibility that the default fontset or the fallback font groups |
| 546 | have a proper font, and return Qt if not. |
| 547 | |
| 548 | If a font is found but is not yet opened, open it (if FACE is not |
| 549 | NULL) or return Qnil (if FACE is NULL). |
| 550 | |
| 551 | ID is a charset-id that must be preferred, or -1 meaning no |
| 552 | preference. |
| 553 | |
| 554 | If FALLBACK is nonzero, search only fallback fonts. */ |
| 555 | |
| 556 | static Lisp_Object |
| 557 | fontset_find_font (fontset, c, face, id, fallback) |
| 558 | Lisp_Object fontset; |
| 559 | int c; |
| 560 | struct face *face; |
| 561 | int id, fallback; |
| 562 | { |
| 563 | Lisp_Object base_fontset, elt, vec, font_def; |
| 564 | int i, from, to; |
| 565 | int font_idx; |
| 566 | FRAME_PTR f = XFRAME (FONTSET_FRAME (fontset)); |
| 567 | |
| 568 | base_fontset = FONTSET_BASE (fontset); |
| 569 | if (! fallback) |
| 570 | vec = CHAR_TABLE_REF (fontset, c); |
| 571 | else |
| 572 | vec = FONTSET_FALLBACK (fontset); |
| 573 | |
| 574 | if (NILP (vec)) |
| 575 | { |
| 576 | Lisp_Object range; |
| 577 | |
| 578 | /* We have not yet decided a font for C. */ |
| 579 | if (! face) |
| 580 | return Qnil; |
| 581 | if (! fallback) |
| 582 | { |
| 583 | elt = char_table_ref_and_range (base_fontset, c, &from, &to); |
| 584 | range = Fcons (make_number (from), make_number (to)); |
| 585 | } |
| 586 | else |
| 587 | { |
| 588 | elt = FONTSET_FALLBACK (base_fontset); |
| 589 | } |
| 590 | if (NILP (elt)) |
| 591 | { |
| 592 | /* This fontset doesn't specify any font for C. */ |
| 593 | vec = make_number (0); |
| 594 | } |
| 595 | else if (ASIZE (elt) == 1 && NILP (AREF (elt, 0))) |
| 596 | { |
| 597 | /* Explicitly specified no font. */ |
| 598 | vec = Qt; |
| 599 | } |
| 600 | else |
| 601 | { |
| 602 | /* Build a vector [ -1 -1 nil NEW-ELT0 NEW-ELT1 NEW-ELT2 ... ], |
| 603 | where the first -1 is to force reordering of NEW-ELTn, |
| 604 | NEW-ELTn is [nil nil AREF (elt, n) nil]. */ |
| 605 | int size = ASIZE (elt); |
| 606 | int j; |
| 607 | |
| 608 | vec = Fmake_vector (make_number (size + 3), Qnil); |
| 609 | ASET (vec, 0, make_number (-1)); |
| 610 | ASET (vec, 1, make_number (-1)); |
| 611 | for (i = j = 0; i < size; i++) |
| 612 | if (! NILP (AREF (elt, i))) |
| 613 | { |
| 614 | Lisp_Object tmp; |
| 615 | tmp = Fmake_vector (make_number (5), Qnil); |
| 616 | ASET (tmp, 2, AREF (elt, i)); |
| 617 | ASET (vec, j + 3, tmp); |
| 618 | j++; |
| 619 | } |
| 620 | } |
| 621 | /* Then store it in the fontset. */ |
| 622 | if (! fallback) |
| 623 | FONTSET_SET (fontset, range, vec); |
| 624 | else |
| 625 | FONTSET_FALLBACK (fontset) = vec; |
| 626 | |
| 627 | } |
| 628 | if (! VECTORP (vec)) |
| 629 | return (EQ (vec, Qt) ? Qt : Qnil); |
| 630 | |
| 631 | if (ASIZE (vec) > 4 |
| 632 | && (XINT (AREF (vec, 0)) != charset_ordered_list_tick |
| 633 | || (id >= 0 && XINT (AREF (vec, 1)) != id) |
| 634 | || NILP (Fequal (AREF (vec, 2), face->lface[LFACE_FAMILY_INDEX])))) |
| 635 | /* We have just created VEC, |
| 636 | or the charset priorities were changed, |
| 637 | or the preferred charset was changed, |
| 638 | or the preferred family was changed. */ |
| 639 | reorder_font_vector (vec, id, face->lface[LFACE_FAMILY_INDEX]); |
| 640 | |
| 641 | /* Find the first available font in the vector of RFONT-DEF. */ |
| 642 | for (i = 3; i < ASIZE (vec); i++) |
| 643 | { |
| 644 | elt = AREF (vec, i); |
| 645 | if (NILP (elt)) |
| 646 | /* This is the sign of not to try fallback fonts. */ |
| 647 | return Qt; |
| 648 | /* ELT == [ FACE-ID FONT-INDEX FONT-DEF ... ] */ |
| 649 | if (INTEGERP (AREF (elt, 1)) && XINT (AREF (elt, 1)) < 0) |
| 650 | /* We couldn't open this font last time. */ |
| 651 | continue; |
| 652 | |
| 653 | if (!face && NILP (AREF (elt, 1))) |
| 654 | /* We have not yet opened the font. */ |
| 655 | return Qnil; |
| 656 | |
| 657 | font_def = AREF (elt, 2); |
| 658 | /* FONT_DEF == [ FONT-SPEC ENCODING REPERTORY ] */ |
| 659 | |
| 660 | #ifdef USE_FONT_BACKEND |
| 661 | if (enable_font_backend) |
| 662 | { |
| 663 | /* ELT == [ FACE-ID FONT-INDEX FONT-DEF FONT-ENTITY ] |
| 664 | where FONT-ENTITY turns to a font-object once opened. */ |
| 665 | Lisp_Object font_entity = AREF (elt, 3); |
| 666 | int has_char = 0; |
| 667 | |
| 668 | if (NILP (font_entity)) |
| 669 | { |
| 670 | font_entity = font_find_for_lface (f, face->lface, |
| 671 | AREF (font_def, 0), -1); |
| 672 | if (NILP (font_entity)) |
| 673 | { |
| 674 | ASET (elt, 1, make_number (-1)); |
| 675 | continue; |
| 676 | } |
| 677 | ASET (elt, 3, font_entity); |
| 678 | } |
| 679 | else if (FONT_ENTITY_P (font_entity)) |
| 680 | { |
| 681 | if (FONT_ENTITY_NOT_LOADABLE (font_entity)) |
| 682 | continue; |
| 683 | } |
| 684 | has_char = font_has_char (f, font_entity, c); |
| 685 | if (! has_char) |
| 686 | continue; |
| 687 | if (! FONT_OBJECT_P (font_entity)) |
| 688 | { |
| 689 | Lisp_Object font_object |
| 690 | = font_open_for_lface (f, font_entity, face->lface, Qnil); |
| 691 | |
| 692 | if (NILP (font_object)) |
| 693 | { |
| 694 | FONT_ENTITY_SET_NOT_LOADABLE (font_entity); |
| 695 | continue; |
| 696 | } |
| 697 | ASET (elt, 3, font_object); |
| 698 | if (has_char < 0) |
| 699 | { |
| 700 | has_char = font_has_char (f, font_object, c); |
| 701 | if (! has_char) |
| 702 | continue; |
| 703 | } |
| 704 | } |
| 705 | /* Decide to use this font. */ |
| 706 | ASET (elt, 1, make_number (0)); |
| 707 | } |
| 708 | else |
| 709 | #endif /* USE_FONT_BACKEND */ |
| 710 | |
| 711 | if (INTEGERP (AREF (font_def, 2))) |
| 712 | { |
| 713 | /* The repertory is specified by charset ID. */ |
| 714 | struct charset *charset |
| 715 | = CHARSET_FROM_ID (XINT (AREF (font_def, 2))); |
| 716 | |
| 717 | if (! CHAR_CHARSET_P (c, charset)) |
| 718 | /* This font can't display C. */ |
| 719 | continue; |
| 720 | } |
| 721 | else if (CHAR_TABLE_P (AREF (font_def, 2))) |
| 722 | { |
| 723 | /* The repertory is specified by a char table. */ |
| 724 | if (NILP (CHAR_TABLE_REF (AREF (font_def, 2), c))) |
| 725 | /* This font can't display C. */ |
| 726 | continue; |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | Lisp_Object slot; |
| 731 | |
| 732 | if (! INTEGERP (AREF (elt, 1))) |
| 733 | { |
| 734 | /* We have not yet opened a font matching this spec. |
| 735 | Open the best matching font now and register the |
| 736 | repertory. */ |
| 737 | struct font_info *font_info; |
| 738 | |
| 739 | font_idx = load_font_get_repertory (f, face, font_def, fontset); |
| 740 | ASET (elt, 1, make_number (font_idx)); |
| 741 | if (font_idx < 0) |
| 742 | /* This means that we couldn't find a font matching |
| 743 | FONT_DEF. */ |
| 744 | continue; |
| 745 | font_info = (*get_font_info_func) (f, font_idx); |
| 746 | ASET (elt, 3, build_string (font_info->full_name)); |
| 747 | } |
| 748 | |
| 749 | slot = Fassq (AREF (elt, 1), FONTSET_REPERTORY (fontset)); |
| 750 | xassert (CONSP (slot)); |
| 751 | if (NILP (CHAR_TABLE_REF (XCDR (slot), c))) |
| 752 | /* This font can't display C. */ |
| 753 | continue; |
| 754 | } |
| 755 | |
| 756 | /* Now we have decided to use this font spec to display C. */ |
| 757 | if (! INTEGERP (AREF (elt, 1))) |
| 758 | { |
| 759 | /* But not yet opened the best matching font. */ |
| 760 | struct font_info *font_info; |
| 761 | |
| 762 | font_idx = load_font_get_repertory (f, face, font_def, fontset); |
| 763 | ASET (elt, 1, make_number (font_idx)); |
| 764 | if (font_idx < 0) |
| 765 | /* Can't open it. Try the other one. */ |
| 766 | continue; |
| 767 | font_info = (*get_font_info_func) (f, font_idx); |
| 768 | ASET (elt, 3, build_string (font_info->full_name)); |
| 769 | } |
| 770 | return elt; |
| 771 | } |
| 772 | |
| 773 | return Qnil; |
| 774 | } |
| 775 | |
| 776 | |
| 777 | static Lisp_Object |
| 778 | fontset_font (fontset, c, face, id) |
| 779 | Lisp_Object fontset; |
| 780 | int c; |
| 781 | struct face *face; |
| 782 | int id; |
| 783 | { |
| 784 | Lisp_Object rfont_def; |
| 785 | Lisp_Object base_fontset; |
| 786 | |
| 787 | /* Try a font-group for C. */ |
| 788 | rfont_def = fontset_find_font (fontset, c, face, id, 0); |
| 789 | if (VECTORP (rfont_def)) |
| 790 | return rfont_def; |
| 791 | if (EQ (rfont_def, Qt)) |
| 792 | return Qnil; |
| 793 | base_fontset = FONTSET_BASE (fontset); |
| 794 | /* Try a font-group for C of the default fontset. */ |
| 795 | if (! EQ (base_fontset, Vdefault_fontset)) |
| 796 | { |
| 797 | if (NILP (FONTSET_DEFAULT (fontset))) |
| 798 | FONTSET_DEFAULT (fontset) |
| 799 | = make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset); |
| 800 | rfont_def = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 0); |
| 801 | if (VECTORP (rfont_def)) |
| 802 | return (rfont_def); |
| 803 | if (! NILP (rfont_def)) |
| 804 | /* Remeber that we have no font for C. */ |
| 805 | FONTSET_SET (fontset, make_number (c), Qt); |
| 806 | } |
| 807 | |
| 808 | /* Try a fallback font-group. */ |
| 809 | rfont_def = fontset_find_font (fontset, c, face, id, 1); |
| 810 | if (! VECTORP (rfont_def) |
| 811 | && ! EQ (base_fontset, Vdefault_fontset)) |
| 812 | /* Try a fallback font-group of the default fontset . */ |
| 813 | rfont_def = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 1); |
| 814 | |
| 815 | if (! VECTORP (rfont_def)) |
| 816 | /* Remeber that we have no font for C. */ |
| 817 | FONTSET_SET (fontset, make_number (c), Qt); |
| 818 | |
| 819 | return rfont_def; |
| 820 | } |
| 821 | |
| 822 | /* Return a newly created fontset with NAME. If BASE is nil, make a |
| 823 | base fontset. Otherwise make a realized fontset whose base is |
| 824 | BASE. */ |
| 825 | |
| 826 | static Lisp_Object |
| 827 | make_fontset (frame, name, base) |
| 828 | Lisp_Object frame, name, base; |
| 829 | { |
| 830 | Lisp_Object fontset; |
| 831 | int size = ASIZE (Vfontset_table); |
| 832 | int id = next_fontset_id; |
| 833 | |
| 834 | /* Find a free slot in Vfontset_table. Usually, next_fontset_id is |
| 835 | the next available fontset ID. So it is expected that this loop |
| 836 | terminates quickly. In addition, as the last element of |
| 837 | Vfontset_table is always nil, we don't have to check the range of |
| 838 | id. */ |
| 839 | while (!NILP (AREF (Vfontset_table, id))) id++; |
| 840 | |
| 841 | if (id + 1 == size) |
| 842 | Vfontset_table = larger_vector (Vfontset_table, size + 32, Qnil); |
| 843 | |
| 844 | fontset = Fmake_char_table (Qfontset, Qnil); |
| 845 | |
| 846 | FONTSET_ID (fontset) = make_number (id); |
| 847 | if (NILP (base)) |
| 848 | { |
| 849 | FONTSET_NAME (fontset) = name; |
| 850 | } |
| 851 | else |
| 852 | { |
| 853 | FONTSET_NAME (fontset) = Qnil; |
| 854 | FONTSET_FRAME (fontset) = frame; |
| 855 | FONTSET_BASE (fontset) = base; |
| 856 | } |
| 857 | |
| 858 | ASET (Vfontset_table, id, fontset); |
| 859 | next_fontset_id = id + 1; |
| 860 | return fontset; |
| 861 | } |
| 862 | |
| 863 | |
| 864 | /* Set the ASCII font of the default fontset to FONTNAME if that is |
| 865 | not yet set. */ |
| 866 | void |
| 867 | set_default_ascii_font (fontname) |
| 868 | Lisp_Object fontname; |
| 869 | { |
| 870 | if (! STRINGP (FONTSET_ASCII (Vdefault_fontset))) |
| 871 | { |
| 872 | int id = fs_query_fontset (fontname, 2); |
| 873 | |
| 874 | if (id >= 0) |
| 875 | fontname = FONTSET_ASCII (FONTSET_FROM_ID (id)); |
| 876 | FONTSET_ASCII (Vdefault_fontset)= fontname; |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | \f |
| 881 | /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/ |
| 882 | |
| 883 | /* Return the name of the fontset who has ID. */ |
| 884 | |
| 885 | Lisp_Object |
| 886 | fontset_name (id) |
| 887 | int id; |
| 888 | { |
| 889 | Lisp_Object fontset; |
| 890 | |
| 891 | fontset = FONTSET_FROM_ID (id); |
| 892 | return FONTSET_NAME (fontset); |
| 893 | } |
| 894 | |
| 895 | |
| 896 | /* Return the ASCII font name of the fontset who has ID. */ |
| 897 | |
| 898 | Lisp_Object |
| 899 | fontset_ascii (id) |
| 900 | int id; |
| 901 | { |
| 902 | Lisp_Object fontset, elt; |
| 903 | |
| 904 | fontset= FONTSET_FROM_ID (id); |
| 905 | elt = FONTSET_ASCII (fontset); |
| 906 | #ifdef USE_FONT_BACKEND |
| 907 | if (CONSP (elt)) |
| 908 | elt = XCAR (elt); |
| 909 | #endif /* USE_FONT_BACKEND */ |
| 910 | /* It is assured that ELT is always a string (i.e. fontname |
| 911 | pattern). */ |
| 912 | return elt; |
| 913 | } |
| 914 | |
| 915 | |
| 916 | /* Free fontset of FACE defined on frame F. Called from |
| 917 | free_realized_face. */ |
| 918 | |
| 919 | void |
| 920 | free_face_fontset (f, face) |
| 921 | FRAME_PTR f; |
| 922 | struct face *face; |
| 923 | { |
| 924 | Lisp_Object fontset; |
| 925 | |
| 926 | fontset = FONTSET_FROM_ID (face->fontset); |
| 927 | xassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset)); |
| 928 | xassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 929 | ASET (Vfontset_table, face->fontset, Qnil); |
| 930 | if (face->fontset < next_fontset_id) |
| 931 | next_fontset_id = face->fontset; |
| 932 | if (! NILP (FONTSET_DEFAULT (fontset))) |
| 933 | { |
| 934 | int id = XINT (FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 935 | |
| 936 | fontset = AREF (Vfontset_table, id); |
| 937 | xassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset)); |
| 938 | xassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 939 | ASET (Vfontset_table, id, Qnil); |
| 940 | if (id < next_fontset_id) |
| 941 | next_fontset_id = face->fontset; |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | |
| 946 | /* Return 1 if FACE is suitable for displaying character C. |
| 947 | Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P |
| 948 | when C is not an ASCII character. */ |
| 949 | |
| 950 | int |
| 951 | face_suitable_for_char_p (face, c) |
| 952 | struct face *face; |
| 953 | int c; |
| 954 | { |
| 955 | Lisp_Object fontset, rfont_def; |
| 956 | |
| 957 | fontset = FONTSET_FROM_ID (face->fontset); |
| 958 | rfont_def = fontset_font (fontset, c, NULL, -1); |
| 959 | return (VECTORP (rfont_def) |
| 960 | && INTEGERP (AREF (rfont_def, 0)) |
| 961 | && face->id == XINT (AREF (rfont_def, 0))); |
| 962 | } |
| 963 | |
| 964 | |
| 965 | /* Return ID of face suitable for displaying character C on frame F. |
| 966 | FACE must be reazlied for ASCII characters in advance. Called from |
| 967 | the macro FACE_FOR_CHAR. */ |
| 968 | |
| 969 | int |
| 970 | face_for_char (f, face, c, pos, object) |
| 971 | FRAME_PTR f; |
| 972 | struct face *face; |
| 973 | int c, pos; |
| 974 | Lisp_Object object; |
| 975 | { |
| 976 | Lisp_Object fontset, charset, rfont_def; |
| 977 | int face_id; |
| 978 | int id; |
| 979 | |
| 980 | if (ASCII_CHAR_P (c)) |
| 981 | return face->ascii_face->id; |
| 982 | |
| 983 | xassert (fontset_id_valid_p (face->fontset)); |
| 984 | fontset = FONTSET_FROM_ID (face->fontset); |
| 985 | xassert (!BASE_FONTSET_P (fontset)); |
| 986 | if (pos < 0) |
| 987 | id = -1; |
| 988 | else |
| 989 | { |
| 990 | charset = Fget_char_property (make_number (pos), Qcharset, object); |
| 991 | if (NILP (charset)) |
| 992 | id = -1; |
| 993 | else if (CHARSETP (charset)) |
| 994 | { |
| 995 | Lisp_Object val; |
| 996 | |
| 997 | val = assoc_no_quit (charset, Vfont_encoding_charset_alist); |
| 998 | if (CONSP (val) && CHARSETP (XCDR (val))) |
| 999 | charset = XCDR (val); |
| 1000 | id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 1001 | } |
| 1002 | } |
| 1003 | rfont_def = fontset_font (fontset, c, face, id); |
| 1004 | if (VECTORP (rfont_def)) |
| 1005 | { |
| 1006 | #ifdef USE_FONT_BACKEND |
| 1007 | if (enable_font_backend |
| 1008 | && NILP (AREF (rfont_def, 0))) |
| 1009 | { |
| 1010 | struct font *font = XSAVE_VALUE (AREF (rfont_def, 3))->pointer; |
| 1011 | |
| 1012 | face_id = face_for_font (f, font, face); |
| 1013 | ASET (rfont_def, 0, make_number (face_id)); |
| 1014 | } |
| 1015 | else |
| 1016 | #endif /* USE_FONT_BACKEND */ |
| 1017 | if (NILP (AREF (rfont_def, 0))) |
| 1018 | { |
| 1019 | /* We have not yet made a realized face that uses this font. */ |
| 1020 | int font_idx = XINT (AREF (rfont_def, 1)); |
| 1021 | |
| 1022 | face_id = lookup_non_ascii_face (f, font_idx, face); |
| 1023 | ASET (rfont_def, 0, make_number (face_id)); |
| 1024 | } |
| 1025 | return XINT (AREF (rfont_def, 0)); |
| 1026 | } |
| 1027 | |
| 1028 | if (NILP (FONTSET_NOFONT_FACE (fontset))) |
| 1029 | { |
| 1030 | face_id = lookup_non_ascii_face (f, -1, face); |
| 1031 | FONTSET_NOFONT_FACE (fontset) = make_number (face_id); |
| 1032 | } |
| 1033 | return XINT (FONTSET_NOFONT_FACE (fontset)); |
| 1034 | } |
| 1035 | |
| 1036 | |
| 1037 | /* Make a realized fontset for ASCII face FACE on frame F from the |
| 1038 | base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the |
| 1039 | default fontset as the base. Value is the id of the new fontset. |
| 1040 | Called from realize_x_face. */ |
| 1041 | |
| 1042 | int |
| 1043 | make_fontset_for_ascii_face (f, base_fontset_id, face) |
| 1044 | FRAME_PTR f; |
| 1045 | int base_fontset_id; |
| 1046 | struct face *face; |
| 1047 | { |
| 1048 | Lisp_Object base_fontset, fontset, frame; |
| 1049 | |
| 1050 | XSETFRAME (frame, f); |
| 1051 | if (base_fontset_id >= 0) |
| 1052 | { |
| 1053 | base_fontset = FONTSET_FROM_ID (base_fontset_id); |
| 1054 | if (!BASE_FONTSET_P (base_fontset)) |
| 1055 | base_fontset = FONTSET_BASE (base_fontset); |
| 1056 | if (! BASE_FONTSET_P (base_fontset)) |
| 1057 | abort (); |
| 1058 | } |
| 1059 | else |
| 1060 | base_fontset = Vdefault_fontset; |
| 1061 | |
| 1062 | fontset = make_fontset (frame, Qnil, base_fontset); |
| 1063 | return XINT (FONTSET_ID (fontset)); |
| 1064 | } |
| 1065 | |
| 1066 | |
| 1067 | #if defined(WINDOWSNT) && defined (_MSC_VER) |
| 1068 | #pragma optimize("", off) |
| 1069 | #endif |
| 1070 | |
| 1071 | /* Load a font named FONTNAME on frame F. Return a pointer to the |
| 1072 | struct font_info of the loaded font. If loading fails, return |
| 1073 | NULL. CHARSET is an ID of charset to encode characters for this |
| 1074 | font. If it is -1, find one from Vfont_encoding_alist. */ |
| 1075 | |
| 1076 | struct font_info * |
| 1077 | fs_load_font (f, fontname, charset) |
| 1078 | FRAME_PTR f; |
| 1079 | char *fontname; |
| 1080 | int charset; |
| 1081 | { |
| 1082 | struct font_info *fontp; |
| 1083 | Lisp_Object fullname; |
| 1084 | |
| 1085 | if (!fontname) |
| 1086 | /* No way to get fontname. */ |
| 1087 | return NULL; |
| 1088 | |
| 1089 | fontp = (*load_font_func) (f, fontname, 0); |
| 1090 | if (! fontp || fontp->charset >= 0) |
| 1091 | return fontp; |
| 1092 | |
| 1093 | fontname = fontp->full_name; |
| 1094 | fullname = build_string (fontp->full_name); |
| 1095 | |
| 1096 | if (charset < 0) |
| 1097 | { |
| 1098 | Lisp_Object charset_symbol; |
| 1099 | |
| 1100 | charset_symbol = find_font_encoding (fullname); |
| 1101 | if (CONSP (charset_symbol)) |
| 1102 | charset_symbol = XCAR (charset_symbol); |
| 1103 | if (NILP (charset_symbol)) |
| 1104 | charset_symbol = Qascii; |
| 1105 | charset = XINT (CHARSET_SYMBOL_ID (charset_symbol)); |
| 1106 | } |
| 1107 | fontp->charset = charset; |
| 1108 | fontp->vertical_centering = 0; |
| 1109 | fontp->font_encoder = NULL; |
| 1110 | |
| 1111 | if (charset != charset_ascii) |
| 1112 | { |
| 1113 | fontp->vertical_centering |
| 1114 | = (STRINGP (Vvertical_centering_font_regexp) |
| 1115 | && (fast_string_match_ignore_case |
| 1116 | (Vvertical_centering_font_regexp, fullname) >= 0)); |
| 1117 | |
| 1118 | if (find_ccl_program_func) |
| 1119 | (*find_ccl_program_func) (fontp); |
| 1120 | } |
| 1121 | |
| 1122 | return fontp; |
| 1123 | } |
| 1124 | |
| 1125 | #if defined(WINDOWSNT) && defined (_MSC_VER) |
| 1126 | #pragma optimize("", on) |
| 1127 | #endif |
| 1128 | |
| 1129 | \f |
| 1130 | /* Return ENCODING or a cons of ENCODING and REPERTORY of the font |
| 1131 | FONTNAME. ENCODING is a charset symbol that specifies the encoding |
| 1132 | of the font. REPERTORY is a charset symbol or nil. */ |
| 1133 | |
| 1134 | |
| 1135 | Lisp_Object |
| 1136 | find_font_encoding (fontname) |
| 1137 | Lisp_Object fontname; |
| 1138 | { |
| 1139 | Lisp_Object tail, elt; |
| 1140 | |
| 1141 | for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail)) |
| 1142 | { |
| 1143 | elt = XCAR (tail); |
| 1144 | if (CONSP (elt) |
| 1145 | && STRINGP (XCAR (elt)) |
| 1146 | && fast_string_match_ignore_case (XCAR (elt), fontname) >= 0 |
| 1147 | && (SYMBOLP (XCDR (elt)) |
| 1148 | ? CHARSETP (XCDR (elt)) |
| 1149 | : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt))))) |
| 1150 | return (XCDR (elt)); |
| 1151 | } |
| 1152 | /* We don't know the encoding of this font. Let's assume `ascii'. */ |
| 1153 | return Qascii; |
| 1154 | } |
| 1155 | |
| 1156 | |
| 1157 | /* Cache data used by fontset_pattern_regexp. The car part is a |
| 1158 | pattern string containing at least one wild card, the cdr part is |
| 1159 | the corresponding regular expression. */ |
| 1160 | static Lisp_Object Vcached_fontset_data; |
| 1161 | |
| 1162 | #define CACHED_FONTSET_NAME (SDATA (XCAR (Vcached_fontset_data))) |
| 1163 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) |
| 1164 | |
| 1165 | /* If fontset name PATTERN contains any wild card, return regular |
| 1166 | expression corresponding to PATTERN. */ |
| 1167 | |
| 1168 | static Lisp_Object |
| 1169 | fontset_pattern_regexp (pattern) |
| 1170 | Lisp_Object pattern; |
| 1171 | { |
| 1172 | if (!index (SDATA (pattern), '*') |
| 1173 | && !index (SDATA (pattern), '?')) |
| 1174 | /* PATTERN does not contain any wild cards. */ |
| 1175 | return Qnil; |
| 1176 | |
| 1177 | if (!CONSP (Vcached_fontset_data) |
| 1178 | || strcmp (SDATA (pattern), CACHED_FONTSET_NAME)) |
| 1179 | { |
| 1180 | /* We must at first update the cached data. */ |
| 1181 | unsigned char *regex, *p0, *p1; |
| 1182 | int ndashes = 0, nstars = 0; |
| 1183 | |
| 1184 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1185 | { |
| 1186 | if (*p0 == '-') |
| 1187 | ndashes++; |
| 1188 | else if (*p0 == '*') |
| 1189 | nstars++; |
| 1190 | } |
| 1191 | |
| 1192 | /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise |
| 1193 | we convert "*" to "[^-]*" which is much faster in regular |
| 1194 | expression matching. */ |
| 1195 | if (ndashes < 14) |
| 1196 | p1 = regex = (unsigned char *) alloca (SBYTES (pattern) + 2 * nstars + 1); |
| 1197 | else |
| 1198 | p1 = regex = (unsigned char *) alloca (SBYTES (pattern) + 5 * nstars + 1); |
| 1199 | |
| 1200 | *p1++ = '^'; |
| 1201 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1202 | { |
| 1203 | if (*p0 == '*') |
| 1204 | { |
| 1205 | if (ndashes < 14) |
| 1206 | *p1++ = '.'; |
| 1207 | else |
| 1208 | *p1++ = '[', *p1++ = '^', *p1++ = '-', *p1++ = ']'; |
| 1209 | *p1++ = '*'; |
| 1210 | } |
| 1211 | else if (*p0 == '?') |
| 1212 | *p1++ = '.'; |
| 1213 | else |
| 1214 | *p1++ = *p0; |
| 1215 | } |
| 1216 | *p1++ = '$'; |
| 1217 | *p1++ = 0; |
| 1218 | |
| 1219 | Vcached_fontset_data = Fcons (build_string (SDATA (pattern)), |
| 1220 | build_string (regex)); |
| 1221 | } |
| 1222 | |
| 1223 | return CACHED_FONTSET_REGEX; |
| 1224 | } |
| 1225 | |
| 1226 | /* Return ID of the base fontset named NAME. If there's no such |
| 1227 | fontset, return -1. NAME_PATTERN specifies how to treat NAME as this: |
| 1228 | 0: pattern containing '*' and '?' as wildcards |
| 1229 | 1: regular expression |
| 1230 | 2: literal fontset name |
| 1231 | */ |
| 1232 | |
| 1233 | int |
| 1234 | fs_query_fontset (name, name_pattern) |
| 1235 | Lisp_Object name; |
| 1236 | int name_pattern; |
| 1237 | { |
| 1238 | Lisp_Object tem; |
| 1239 | int i; |
| 1240 | |
| 1241 | name = Fdowncase (name); |
| 1242 | if (name_pattern != 1) |
| 1243 | { |
| 1244 | tem = Frassoc (name, Vfontset_alias_alist); |
| 1245 | if (NILP (tem)) |
| 1246 | tem = Fassoc (name, Vfontset_alias_alist); |
| 1247 | if (CONSP (tem) && STRINGP (XCAR (tem))) |
| 1248 | name = XCAR (tem); |
| 1249 | else if (name_pattern == 0) |
| 1250 | { |
| 1251 | tem = fontset_pattern_regexp (name); |
| 1252 | if (STRINGP (tem)) |
| 1253 | { |
| 1254 | name = tem; |
| 1255 | name_pattern = 1; |
| 1256 | } |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 1261 | { |
| 1262 | Lisp_Object fontset, this_name; |
| 1263 | |
| 1264 | fontset = FONTSET_FROM_ID (i); |
| 1265 | if (NILP (fontset) |
| 1266 | || !BASE_FONTSET_P (fontset)) |
| 1267 | continue; |
| 1268 | |
| 1269 | this_name = FONTSET_NAME (fontset); |
| 1270 | if (name_pattern == 1 |
| 1271 | ? fast_string_match (name, this_name) >= 0 |
| 1272 | : !strcmp (SDATA (name), SDATA (this_name))) |
| 1273 | return i; |
| 1274 | } |
| 1275 | return -1; |
| 1276 | } |
| 1277 | |
| 1278 | |
| 1279 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
| 1280 | doc: /* Return the name of a fontset that matches PATTERN. |
| 1281 | The value is nil if there is no matching fontset. |
| 1282 | PATTERN can contain `*' or `?' as a wildcard |
| 1283 | just as X font name matching algorithm allows. |
| 1284 | If REGEXPP is non-nil, PATTERN is a regular expression. */) |
| 1285 | (pattern, regexpp) |
| 1286 | Lisp_Object pattern, regexpp; |
| 1287 | { |
| 1288 | Lisp_Object fontset; |
| 1289 | int id; |
| 1290 | |
| 1291 | (*check_window_system_func) (); |
| 1292 | |
| 1293 | CHECK_STRING (pattern); |
| 1294 | |
| 1295 | if (SCHARS (pattern) == 0) |
| 1296 | return Qnil; |
| 1297 | |
| 1298 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
| 1299 | if (id < 0) |
| 1300 | return Qnil; |
| 1301 | |
| 1302 | fontset = FONTSET_FROM_ID (id); |
| 1303 | return FONTSET_NAME (fontset); |
| 1304 | } |
| 1305 | |
| 1306 | /* Return a list of base fontset names matching PATTERN on frame F. */ |
| 1307 | |
| 1308 | Lisp_Object |
| 1309 | list_fontsets (f, pattern, size) |
| 1310 | FRAME_PTR f; |
| 1311 | Lisp_Object pattern; |
| 1312 | int size; |
| 1313 | { |
| 1314 | Lisp_Object frame, regexp, val; |
| 1315 | int id; |
| 1316 | |
| 1317 | XSETFRAME (frame, f); |
| 1318 | |
| 1319 | regexp = fontset_pattern_regexp (pattern); |
| 1320 | val = Qnil; |
| 1321 | |
| 1322 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1323 | { |
| 1324 | Lisp_Object fontset, name; |
| 1325 | |
| 1326 | fontset = FONTSET_FROM_ID (id); |
| 1327 | if (NILP (fontset) |
| 1328 | || !BASE_FONTSET_P (fontset) |
| 1329 | || !EQ (frame, FONTSET_FRAME (fontset))) |
| 1330 | continue; |
| 1331 | name = FONTSET_NAME (fontset); |
| 1332 | |
| 1333 | if (STRINGP (regexp) |
| 1334 | ? (fast_string_match (regexp, name) < 0) |
| 1335 | : strcmp (SDATA (pattern), SDATA (name))) |
| 1336 | continue; |
| 1337 | |
| 1338 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
| 1339 | } |
| 1340 | |
| 1341 | return val; |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | /* Free all realized fontsets whose base fontset is BASE. */ |
| 1346 | |
| 1347 | static void |
| 1348 | free_realized_fontsets (base) |
| 1349 | Lisp_Object base; |
| 1350 | { |
| 1351 | int id; |
| 1352 | |
| 1353 | #if 0 |
| 1354 | /* For the moment, this doesn't work because free_realized_face |
| 1355 | doesn't remove FACE from a cache. Until we find a solution, we |
| 1356 | suppress this code, and simply use Fclear_face_cache even though |
| 1357 | that is not efficient. */ |
| 1358 | BLOCK_INPUT; |
| 1359 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1360 | { |
| 1361 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1362 | |
| 1363 | if (EQ (FONTSET_BASE (this), base)) |
| 1364 | { |
| 1365 | Lisp_Object tail; |
| 1366 | |
| 1367 | for (tail = FONTSET_FACE_ALIST (this); CONSP (tail); |
| 1368 | tail = XCDR (tail)) |
| 1369 | { |
| 1370 | FRAME_PTR f = XFRAME (FONTSET_FRAME (this)); |
| 1371 | int face_id = XINT (XCDR (XCAR (tail))); |
| 1372 | struct face *face = FACE_FROM_ID (f, face_id); |
| 1373 | |
| 1374 | /* Face THIS itself is also freed by the following call. */ |
| 1375 | free_realized_face (f, face); |
| 1376 | } |
| 1377 | } |
| 1378 | } |
| 1379 | UNBLOCK_INPUT; |
| 1380 | #else /* not 0 */ |
| 1381 | /* But, we don't have to call Fclear_face_cache if no fontset has |
| 1382 | been realized from BASE. */ |
| 1383 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1384 | { |
| 1385 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1386 | |
| 1387 | if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base)) |
| 1388 | { |
| 1389 | Fclear_face_cache (Qt); |
| 1390 | break; |
| 1391 | } |
| 1392 | } |
| 1393 | #endif /* not 0 */ |
| 1394 | } |
| 1395 | |
| 1396 | |
| 1397 | /* Check validity of NAME as a fontset name and return the |
| 1398 | corresponding fontset. If not valid, signal an error. |
| 1399 | If NAME is t, return Vdefault_fontset. */ |
| 1400 | |
| 1401 | static Lisp_Object |
| 1402 | check_fontset_name (name) |
| 1403 | Lisp_Object name; |
| 1404 | { |
| 1405 | int id; |
| 1406 | |
| 1407 | if (EQ (name, Qt)) |
| 1408 | return Vdefault_fontset; |
| 1409 | |
| 1410 | CHECK_STRING (name); |
| 1411 | /* First try NAME as literal. */ |
| 1412 | id = fs_query_fontset (name, 2); |
| 1413 | if (id < 0) |
| 1414 | /* For backward compatibility, try again NAME as pattern. */ |
| 1415 | id = fs_query_fontset (name, 0); |
| 1416 | if (id < 0) |
| 1417 | error ("Fontset `%s' does not exist", SDATA (name)); |
| 1418 | return FONTSET_FROM_ID (id); |
| 1419 | } |
| 1420 | |
| 1421 | static void |
| 1422 | accumulate_script_ranges (arg, range, val) |
| 1423 | Lisp_Object arg, range, val; |
| 1424 | { |
| 1425 | if (EQ (XCAR (arg), val)) |
| 1426 | { |
| 1427 | if (CONSP (range)) |
| 1428 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); |
| 1429 | else |
| 1430 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); |
| 1431 | } |
| 1432 | } |
| 1433 | |
| 1434 | |
| 1435 | /* Return an ASCII font name generated from fontset name NAME and |
| 1436 | font-spec ASCII_SPEC. NAME is a string conforming to XLFD. */ |
| 1437 | |
| 1438 | static INLINE Lisp_Object |
| 1439 | generate_ascii_font_name (name, ascii_spec) |
| 1440 | Lisp_Object name, ascii_spec; |
| 1441 | { |
| 1442 | Lisp_Object font_spec = Ffont_spec (0, NULL); |
| 1443 | Lisp_Object vec; |
| 1444 | int i; |
| 1445 | char xlfd[256]; |
| 1446 | |
| 1447 | if (font_parse_xlfd (SDATA (name), font_spec) < 0) |
| 1448 | error ("Not an XLFD font name: %s", SDATA (name)); |
| 1449 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_WIDTH_INDEX; i++) |
| 1450 | if (! NILP (AREF (ascii_spec, i))) |
| 1451 | ASET (font_spec, i, AREF (ascii_spec, i)); |
| 1452 | i = font_unparse_xlfd (font_spec, 0, xlfd, 256); |
| 1453 | if (i < 0) |
| 1454 | error ("Not an XLFD font name: %s", SDATA (name)); |
| 1455 | return make_unibyte_string (xlfd, i); |
| 1456 | } |
| 1457 | |
| 1458 | /* Variables referred in set_fontset_font. They are set before |
| 1459 | map_charset_chars is called in Fset_fontset_font. */ |
| 1460 | static Lisp_Object font_def_arg, add_arg; |
| 1461 | static int from_arg, to_arg; |
| 1462 | |
| 1463 | /* Callback function for map_charset_chars in Fset_fontset_font. In |
| 1464 | FONTSET, set font_def_arg in a fashion specified by add_arg for |
| 1465 | characters in RANGE while ignoring the range between from_arg and |
| 1466 | to_arg. */ |
| 1467 | |
| 1468 | static void |
| 1469 | set_fontset_font (fontset, range) |
| 1470 | Lisp_Object fontset, range; |
| 1471 | { |
| 1472 | if (from_arg < to_arg) |
| 1473 | { |
| 1474 | int from = XINT (XCAR (range)), to = XINT (XCDR (range)); |
| 1475 | |
| 1476 | if (from < from_arg) |
| 1477 | { |
| 1478 | if (to > to_arg) |
| 1479 | { |
| 1480 | Lisp_Object range2; |
| 1481 | |
| 1482 | range2 = Fcons (make_number (to_arg), XCDR (range)); |
| 1483 | FONTSET_ADD (fontset, range, font_def_arg, add_arg); |
| 1484 | to = to_arg; |
| 1485 | } |
| 1486 | if (to > from_arg) |
| 1487 | range = Fcons (XCAR (range), make_number (from_arg)); |
| 1488 | } |
| 1489 | else if (to <= to_arg) |
| 1490 | return; |
| 1491 | else |
| 1492 | { |
| 1493 | if (from < to_arg) |
| 1494 | range = Fcons (make_number (to_arg), XCDR (range)); |
| 1495 | } |
| 1496 | } |
| 1497 | FONTSET_ADD (fontset, range, font_def_arg, add_arg); |
| 1498 | } |
| 1499 | |
| 1500 | extern Lisp_Object QCfamily, QCregistry; |
| 1501 | |
| 1502 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 5, 0, |
| 1503 | doc: /* |
| 1504 | Modify fontset NAME to use FONT-SPEC for TARGET characters. |
| 1505 | |
| 1506 | TARGET may be a cons; (FROM . TO), where FROM and TO are characters. |
| 1507 | In that case, use FONT-SPEC for all characters in the range FROM and |
| 1508 | TO (inclusive). |
| 1509 | |
| 1510 | TARGET may be a script name symbol. In that case, use FONT-SPEC for |
| 1511 | all characters that belong to the script. |
| 1512 | |
| 1513 | TARGET may be a charset. In that case, use FONT-SPEC for all |
| 1514 | characters in the charset. |
| 1515 | |
| 1516 | TARGET may be nil. In that case, use FONT-SPEC for any characters for |
| 1517 | that no FONT-SPEC is specified. |
| 1518 | |
| 1519 | FONT-SPEC may one of these: |
| 1520 | * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and |
| 1521 | REGISTRY is a font registry name. FAMILY may contains foundry |
| 1522 | name, and REGISTRY may contains encoding name. |
| 1523 | * A font name string. |
| 1524 | * nil, which explicitly specifies that there's no font for TARGET. |
| 1525 | |
| 1526 | Optional 4th argument FRAME, if non-nil, is a frame. This argument is |
| 1527 | kept for backward compatibility and has no meaning. |
| 1528 | |
| 1529 | Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC |
| 1530 | to the font specifications for TARGET previously set. If it is |
| 1531 | `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is |
| 1532 | appended. By default, FONT-SPEC overrides the previous settings. */) |
| 1533 | (name, target, font_spec, frame, add) |
| 1534 | Lisp_Object name, target, font_spec, frame, add; |
| 1535 | { |
| 1536 | Lisp_Object fontset; |
| 1537 | Lisp_Object font_def, registry, family; |
| 1538 | Lisp_Object encoding, repertory; |
| 1539 | Lisp_Object range_list; |
| 1540 | struct charset *charset = NULL; |
| 1541 | |
| 1542 | fontset = check_fontset_name (name); |
| 1543 | |
| 1544 | /* The arg FRAME is kept for backward compatibility. We only check |
| 1545 | the validity. */ |
| 1546 | if (!NILP (frame)) |
| 1547 | CHECK_LIVE_FRAME (frame); |
| 1548 | |
| 1549 | if (VECTORP (font_spec)) |
| 1550 | { |
| 1551 | if (! FONT_SPEC_P (font_spec)) |
| 1552 | Fsignal (Qfont, list2 (build_string ("invalid font-spec"), font_spec)); |
| 1553 | } |
| 1554 | else if (CONSP (font_spec)) |
| 1555 | { |
| 1556 | Lisp_Object args[4]; |
| 1557 | int i= 0; |
| 1558 | |
| 1559 | family = XCAR (font_spec); |
| 1560 | registry = XCDR (font_spec); |
| 1561 | |
| 1562 | if (! NILP (family)) |
| 1563 | { |
| 1564 | CHECK_STRING (family); |
| 1565 | args[i++] = QCfamily; |
| 1566 | args[i++] = family; |
| 1567 | } |
| 1568 | CHECK_STRING (registry); |
| 1569 | args[i++] = QCregistry; |
| 1570 | args[i++] = registry; |
| 1571 | font_spec = Ffont_spec (i, args); |
| 1572 | } |
| 1573 | else if (STRINGP (font_spec)) |
| 1574 | { |
| 1575 | Lisp_Object args[2]; |
| 1576 | |
| 1577 | args[0] = QCname; |
| 1578 | args[1] = font_spec; |
| 1579 | font_spec = Ffont_spec (2, args); |
| 1580 | } |
| 1581 | else if (! NILP (font_spec)) |
| 1582 | wrong_type_argument (intern ("font-spec"), font_spec); |
| 1583 | |
| 1584 | if (! NILP (font_spec)) |
| 1585 | { |
| 1586 | family = AREF (font_spec, FONT_FAMILY_INDEX); |
| 1587 | if (! NILP (family) && SYMBOLP (family)) |
| 1588 | family = SYMBOL_NAME (family); |
| 1589 | registry = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1590 | if (! NILP (registry) && SYMBOLP (registry)) |
| 1591 | registry = SYMBOL_NAME (registry); |
| 1592 | |
| 1593 | encoding = find_font_encoding (concat2 (family, registry)); |
| 1594 | if (NILP (encoding)) |
| 1595 | encoding = Qascii; |
| 1596 | |
| 1597 | if (SYMBOLP (encoding)) |
| 1598 | { |
| 1599 | CHECK_CHARSET (encoding); |
| 1600 | encoding = repertory = CHARSET_SYMBOL_ID (encoding); |
| 1601 | } |
| 1602 | else |
| 1603 | { |
| 1604 | repertory = XCDR (encoding); |
| 1605 | encoding = XCAR (encoding); |
| 1606 | CHECK_CHARSET (encoding); |
| 1607 | encoding = CHARSET_SYMBOL_ID (encoding); |
| 1608 | if (! NILP (repertory) && SYMBOLP (repertory)) |
| 1609 | { |
| 1610 | CHECK_CHARSET (repertory); |
| 1611 | repertory = CHARSET_SYMBOL_ID (repertory); |
| 1612 | } |
| 1613 | } |
| 1614 | font_def = Fmake_vector (make_number (3), font_spec); |
| 1615 | ASET (font_def, 1, encoding); |
| 1616 | ASET (font_def, 2, repertory); |
| 1617 | } |
| 1618 | else |
| 1619 | font_def = Qnil; |
| 1620 | |
| 1621 | if (CHARACTERP (target)) |
| 1622 | range_list = Fcons (Fcons (target, target), Qnil); |
| 1623 | else if (CONSP (target)) |
| 1624 | { |
| 1625 | Lisp_Object from, to; |
| 1626 | |
| 1627 | from = Fcar (target); |
| 1628 | to = Fcdr (target); |
| 1629 | CHECK_CHARACTER (from); |
| 1630 | CHECK_CHARACTER (to); |
| 1631 | range_list = Fcons (target, Qnil); |
| 1632 | } |
| 1633 | else if (SYMBOLP (target) && !NILP (target)) |
| 1634 | { |
| 1635 | Lisp_Object script_list; |
| 1636 | Lisp_Object val; |
| 1637 | |
| 1638 | range_list = Qnil; |
| 1639 | script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; |
| 1640 | if (! NILP (Fmemq (target, script_list))) |
| 1641 | { |
| 1642 | val = Fcons (target, Qnil); |
| 1643 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, |
| 1644 | val); |
| 1645 | range_list = XCDR (val); |
| 1646 | if (EQ (target, Qlatin) && NILP (FONTSET_ASCII (fontset))) |
| 1647 | { |
| 1648 | if (VECTORP (font_spec)) |
| 1649 | val = generate_ascii_font_name (FONTSET_NAME (fontset), |
| 1650 | font_spec); |
| 1651 | else |
| 1652 | val = font_spec; |
| 1653 | FONTSET_ASCII (fontset) = val; |
| 1654 | } |
| 1655 | } |
| 1656 | if (CHARSETP (target)) |
| 1657 | { |
| 1658 | if (EQ (target, Qascii) && NILP (FONTSET_ASCII (fontset))) |
| 1659 | { |
| 1660 | if (VECTORP (font_spec)) |
| 1661 | font_spec = generate_ascii_font_name (FONTSET_NAME (fontset), |
| 1662 | font_spec); |
| 1663 | FONTSET_ASCII (fontset) = font_spec; |
| 1664 | range_list = Fcons (Fcons (make_number (0), make_number (127)), |
| 1665 | Qnil); |
| 1666 | } |
| 1667 | else |
| 1668 | { |
| 1669 | CHECK_CHARSET_GET_CHARSET (target, charset); |
| 1670 | } |
| 1671 | } |
| 1672 | else if (NILP (range_list)) |
| 1673 | error ("Invalid script or charset name: %s", |
| 1674 | SDATA (SYMBOL_NAME (target))); |
| 1675 | } |
| 1676 | else if (NILP (target)) |
| 1677 | range_list = Fcons (Qnil, Qnil); |
| 1678 | else |
| 1679 | error ("Invalid target for setting a font"); |
| 1680 | |
| 1681 | |
| 1682 | if (charset) |
| 1683 | { |
| 1684 | font_def_arg = font_def; |
| 1685 | add_arg = add; |
| 1686 | if (NILP (range_list)) |
| 1687 | from_arg = to_arg = 0; |
| 1688 | else |
| 1689 | from_arg = XINT (XCAR (XCAR (range_list))), |
| 1690 | to_arg = XINT (XCDR (XCAR (range_list))); |
| 1691 | |
| 1692 | map_charset_chars (set_fontset_font, Qnil, fontset, charset, |
| 1693 | CHARSET_MIN_CODE (charset), |
| 1694 | CHARSET_MAX_CODE (charset)); |
| 1695 | } |
| 1696 | for (; CONSP (range_list); range_list = XCDR (range_list)) |
| 1697 | FONTSET_ADD (fontset, XCAR (range_list), font_def, add); |
| 1698 | |
| 1699 | /* Free all realized fontsets whose base is FONTSET. This way, the |
| 1700 | specified character(s) are surely redisplayed by a correct |
| 1701 | font. */ |
| 1702 | free_realized_fontsets (fontset); |
| 1703 | |
| 1704 | return Qnil; |
| 1705 | } |
| 1706 | |
| 1707 | |
| 1708 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, |
| 1709 | doc: /* Create a new fontset NAME from font information in FONTLIST. |
| 1710 | |
| 1711 | FONTLIST is an alist of scripts vs the corresponding font specification list. |
| 1712 | Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a |
| 1713 | character of SCRIPT is displayed by a font that matches one of |
| 1714 | FONT-SPEC. |
| 1715 | |
| 1716 | SCRIPT is a symbol that appears in the first extra slot of the |
| 1717 | char-table `char-script-table'. |
| 1718 | |
| 1719 | FONT-SPEC is a vector, a cons, or a string. See the documentation of |
| 1720 | `set-fontset-font' for the meaning. */) |
| 1721 | (name, fontlist) |
| 1722 | Lisp_Object name, fontlist; |
| 1723 | { |
| 1724 | Lisp_Object fontset; |
| 1725 | Lisp_Object val; |
| 1726 | int id; |
| 1727 | |
| 1728 | CHECK_STRING (name); |
| 1729 | CHECK_LIST (fontlist); |
| 1730 | |
| 1731 | id = fs_query_fontset (name, 0); |
| 1732 | if (id < 0) |
| 1733 | { |
| 1734 | name = Fdowncase (name); |
| 1735 | val = split_font_name_into_vector (name); |
| 1736 | if (NILP (val) || NILP (AREF (val, 12)) || NILP (AREF (val, 13))) |
| 1737 | error ("Fontset name must be in XLFD format"); |
| 1738 | if (strcmp (SDATA (AREF (val, 12)), "fontset")) |
| 1739 | error ("Registry field of fontset name must be \"fontset\""); |
| 1740 | Vfontset_alias_alist |
| 1741 | = Fcons (Fcons (name, |
| 1742 | concat2 (concat2 (AREF (val, 12), build_string ("-")), |
| 1743 | AREF (val, 13))), |
| 1744 | Vfontset_alias_alist); |
| 1745 | ASET (val, 12, build_string ("iso8859-1")); |
| 1746 | fontset = make_fontset (Qnil, name, Qnil); |
| 1747 | FONTSET_ASCII (fontset) = build_font_name_from_vector (val); |
| 1748 | } |
| 1749 | else |
| 1750 | { |
| 1751 | fontset = FONTSET_FROM_ID (id);; |
| 1752 | free_realized_fontsets (fontset); |
| 1753 | Fset_char_table_range (fontset, Qt, Qnil); |
| 1754 | } |
| 1755 | |
| 1756 | for (; ! NILP (fontlist); fontlist = Fcdr (fontlist)) |
| 1757 | { |
| 1758 | Lisp_Object elt, script; |
| 1759 | |
| 1760 | elt = Fcar (fontlist); |
| 1761 | script = Fcar (elt); |
| 1762 | elt = Fcdr (elt); |
| 1763 | if (CONSP (elt) && (NILP (XCDR (elt)) || CONSP (XCDR (elt)))) |
| 1764 | for (; CONSP (elt); elt = XCDR (elt)) |
| 1765 | Fset_fontset_font (name, script, XCAR (elt), Qnil, Qappend); |
| 1766 | else |
| 1767 | Fset_fontset_font (name, script, elt, Qnil, Qappend); |
| 1768 | } |
| 1769 | return name; |
| 1770 | } |
| 1771 | |
| 1772 | |
| 1773 | /* Alist of automatically created fontsets. Each element is a cons |
| 1774 | (FONTNAME . FONTSET-ID). */ |
| 1775 | static Lisp_Object auto_fontset_alist; |
| 1776 | |
| 1777 | int |
| 1778 | new_fontset_from_font_name (Lisp_Object fontname) |
| 1779 | { |
| 1780 | Lisp_Object val; |
| 1781 | Lisp_Object name; |
| 1782 | Lisp_Object vec; |
| 1783 | int id; |
| 1784 | |
| 1785 | fontname = Fdowncase (fontname); |
| 1786 | val = Fassoc (fontname, auto_fontset_alist); |
| 1787 | if (CONSP (val)) |
| 1788 | return XINT (XCDR (val)); |
| 1789 | |
| 1790 | vec = split_font_name_into_vector (fontname); |
| 1791 | if ( NILP (vec)) |
| 1792 | vec = Fmake_vector (make_number (14), build_string ("")); |
| 1793 | ASET (vec, 12, build_string ("fontset")); |
| 1794 | if (NILP (auto_fontset_alist)) |
| 1795 | { |
| 1796 | ASET (vec, 13, build_string ("startup")); |
| 1797 | name = build_font_name_from_vector (vec); |
| 1798 | } |
| 1799 | else |
| 1800 | { |
| 1801 | char temp[20]; |
| 1802 | int len = XINT (Flength (auto_fontset_alist)); |
| 1803 | |
| 1804 | sprintf (temp, "auto%d", len); |
| 1805 | ASET (vec, 13, build_string (temp)); |
| 1806 | name = build_font_name_from_vector (vec); |
| 1807 | } |
| 1808 | name = Fnew_fontset (name, list2 (list2 (Qascii, fontname), |
| 1809 | list2 (Fcons (make_number (0), |
| 1810 | make_number (MAX_CHAR)), |
| 1811 | fontname))); |
| 1812 | id = fs_query_fontset (name, 0); |
| 1813 | auto_fontset_alist |
| 1814 | = Fcons (Fcons (fontname, make_number (id)), auto_fontset_alist); |
| 1815 | return id; |
| 1816 | } |
| 1817 | |
| 1818 | #ifdef USE_FONT_BACKEND |
| 1819 | int |
| 1820 | new_fontset_from_font (font_object) |
| 1821 | Lisp_Object font_object; |
| 1822 | { |
| 1823 | Lisp_Object font_name = font_get_name (font_object); |
| 1824 | Lisp_Object font_spec = font_get_spec (font_object); |
| 1825 | Lisp_Object fontset_spec, short_name, name, fontset; |
| 1826 | |
| 1827 | if (NILP (auto_fontset_alist)) |
| 1828 | short_name = build_string ("fontset-startup"); |
| 1829 | else |
| 1830 | { |
| 1831 | char temp[32]; |
| 1832 | int len = XINT (Flength (auto_fontset_alist)); |
| 1833 | |
| 1834 | sprintf (temp, "fontset-auto%d", len); |
| 1835 | short_name = build_string (temp); |
| 1836 | } |
| 1837 | fontset_spec = Fcopy_sequence (font_spec); |
| 1838 | ASET (fontset_spec, FONT_REGISTRY_INDEX, short_name); |
| 1839 | name = Ffont_xlfd_name (fontset_spec); |
| 1840 | if (NILP (name)) |
| 1841 | { |
| 1842 | int i; |
| 1843 | |
| 1844 | for (i = 0; i < FONT_SIZE_INDEX; i++) |
| 1845 | if ((i != FONT_FAMILY_INDEX) && (i != FONT_REGISTRY_INDEX)) |
| 1846 | ASET (fontset_spec, i, Qnil); |
| 1847 | name = Ffont_xlfd_name (fontset_spec); |
| 1848 | if (NILP (name)) |
| 1849 | abort (); |
| 1850 | } |
| 1851 | fontset = make_fontset (Qnil, name, Qnil); |
| 1852 | FONTSET_ASCII (fontset) = font_name; |
| 1853 | font_spec = Fcons (SYMBOL_NAME (AREF (font_spec, FONT_FAMILY_INDEX)), |
| 1854 | SYMBOL_NAME (AREF (font_spec, FONT_REGISTRY_INDEX))); |
| 1855 | Fset_fontset_font (name, Qlatin, font_spec, Qnil, Qnil); |
| 1856 | XSETCDR (font_spec, build_string ("iso10646-1")); |
| 1857 | Fset_fontset_font (name, Qlatin, font_spec, Qnil, Qappend); |
| 1858 | Fset_fontset_font (name, Qnil, font_spec, Qnil, Qnil); |
| 1859 | return XINT (FONTSET_ID (fontset)); |
| 1860 | } |
| 1861 | |
| 1862 | struct font * |
| 1863 | fontset_ascii_font (f, id) |
| 1864 | FRAME_PTR f; |
| 1865 | int id; |
| 1866 | { |
| 1867 | Lisp_Object fontset = FONTSET_FROM_ID (id); |
| 1868 | Lisp_Object ascii_slot = FONTSET_ASCII (fontset); |
| 1869 | Lisp_Object val, font_object; |
| 1870 | |
| 1871 | if (CONSP (ascii_slot)) |
| 1872 | { |
| 1873 | Lisp_Object ascii_font_name = XCAR (ascii_slot); |
| 1874 | |
| 1875 | font_object = Qnil; |
| 1876 | for (val = XCDR (ascii_slot); ! NILP (val); val = XCDR (val)) |
| 1877 | { |
| 1878 | Lisp_Object frame = font_get_frame (XCAR (val)); |
| 1879 | |
| 1880 | if (NILP (frame) || XFRAME (frame) == f) |
| 1881 | { |
| 1882 | font_object = XCAR (val); |
| 1883 | if (XSAVE_VALUE (font_object)->integer == 0) |
| 1884 | { |
| 1885 | font_object = font_open_by_name (f, SDATA (ascii_font_name)); |
| 1886 | XSETCAR (val, font_object); |
| 1887 | } |
| 1888 | break; |
| 1889 | } |
| 1890 | } |
| 1891 | if (NILP (font_object)) |
| 1892 | { |
| 1893 | font_object = font_open_by_name (f, SDATA (ascii_font_name)); |
| 1894 | XSETCDR (ascii_slot, Fcons (font_object, XCDR (ascii_slot))); |
| 1895 | } |
| 1896 | } |
| 1897 | else |
| 1898 | { |
| 1899 | font_object = font_open_by_name (f, SDATA (ascii_slot)); |
| 1900 | FONTSET_ASCII (fontset) = Fcons (ascii_slot, Fcons (font_object, Qnil)); |
| 1901 | } |
| 1902 | if (NILP (font_object)) |
| 1903 | return NULL; |
| 1904 | return XSAVE_VALUE (font_object)->pointer; |
| 1905 | } |
| 1906 | |
| 1907 | #endif /* USE_FONT_BACKEND */ |
| 1908 | |
| 1909 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, |
| 1910 | doc: /* Return information about a font named NAME on frame FRAME. |
| 1911 | If FRAME is omitted or nil, use the selected frame. |
| 1912 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE, |
| 1913 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT, |
| 1914 | where |
| 1915 | OPENED-NAME is the name used for opening the font, |
| 1916 | FULL-NAME is the full name of the font, |
| 1917 | SIZE is the maximum bound width of the font, |
| 1918 | HEIGHT is the height of the font, |
| 1919 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline, |
| 1920 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling |
| 1921 | how to compose characters. |
| 1922 | If the named font is not yet loaded, return nil. */) |
| 1923 | (name, frame) |
| 1924 | Lisp_Object name, frame; |
| 1925 | { |
| 1926 | FRAME_PTR f; |
| 1927 | struct font_info *fontp; |
| 1928 | Lisp_Object info; |
| 1929 | Lisp_Object font_object; |
| 1930 | |
| 1931 | (*check_window_system_func) (); |
| 1932 | |
| 1933 | CHECK_STRING (name); |
| 1934 | name = Fdowncase (name); |
| 1935 | if (NILP (frame)) |
| 1936 | frame = selected_frame; |
| 1937 | CHECK_LIVE_FRAME (frame); |
| 1938 | f = XFRAME (frame); |
| 1939 | |
| 1940 | if (!query_font_func) |
| 1941 | error ("Font query function is not supported"); |
| 1942 | |
| 1943 | #ifdef USE_FONT_BACKEND |
| 1944 | if (enable_font_backend) |
| 1945 | { |
| 1946 | font_object = font_open_by_name (f, SDATA (name)); |
| 1947 | if (NILP (font_object)) |
| 1948 | fontp = NULL; |
| 1949 | else |
| 1950 | fontp = (struct font_info *) XSAVE_VALUE (font_object)->pointer; |
| 1951 | } |
| 1952 | else |
| 1953 | #endif /* USE_FONT_BACKEND */ |
| 1954 | fontp = (*query_font_func) (f, SDATA (name)); |
| 1955 | if (!fontp) |
| 1956 | return Qnil; |
| 1957 | |
| 1958 | info = Fmake_vector (make_number (7), Qnil); |
| 1959 | |
| 1960 | XVECTOR (info)->contents[0] = build_string (fontp->name); |
| 1961 | XVECTOR (info)->contents[1] = build_string (fontp->full_name); |
| 1962 | XVECTOR (info)->contents[2] = make_number (fontp->size); |
| 1963 | XVECTOR (info)->contents[3] = make_number (fontp->height); |
| 1964 | XVECTOR (info)->contents[4] = make_number (fontp->baseline_offset); |
| 1965 | XVECTOR (info)->contents[5] = make_number (fontp->relative_compose); |
| 1966 | XVECTOR (info)->contents[6] = make_number (fontp->default_ascent); |
| 1967 | |
| 1968 | #ifdef USE_FONT_BACKEND |
| 1969 | if (! NILP (font_object)) |
| 1970 | font_close_object (f, font_object); |
| 1971 | #endif /* USE_FONT_BACKEND */ |
| 1972 | return info; |
| 1973 | } |
| 1974 | |
| 1975 | |
| 1976 | /* Return a cons (FONT-NAME . GLYPH-CODE). |
| 1977 | FONT-NAME is the font name for the character at POSITION in the current |
| 1978 | buffer. This is computed from all the text properties and overlays |
| 1979 | that apply to POSITION. POSTION may be nil, in which case, |
| 1980 | FONT-NAME is the font name for display the character CH with the |
| 1981 | default face. |
| 1982 | |
| 1983 | GLYPH-CODE is the glyph code in the font to use for the character. |
| 1984 | |
| 1985 | If the 2nd optional arg CH is non-nil, it is a character to check |
| 1986 | the font instead of the character at POSITION. |
| 1987 | |
| 1988 | It returns nil in the following cases: |
| 1989 | |
| 1990 | (1) The window system doesn't have a font for the character (thus |
| 1991 | it is displayed by an empty box). |
| 1992 | |
| 1993 | (2) The character code is invalid. |
| 1994 | |
| 1995 | (3) If POSITION is not nil, and the current buffer is not displayed |
| 1996 | in any window. |
| 1997 | |
| 1998 | In addition, the returned font name may not take into account of |
| 1999 | such redisplay engine hooks as what used in jit-lock-mode if |
| 2000 | POSITION is currently not visible. */ |
| 2001 | |
| 2002 | |
| 2003 | DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0, |
| 2004 | doc: /* For internal use only. */) |
| 2005 | (position, ch) |
| 2006 | Lisp_Object position, ch; |
| 2007 | { |
| 2008 | int pos, pos_byte, dummy; |
| 2009 | int face_id; |
| 2010 | int c; |
| 2011 | struct frame *f; |
| 2012 | struct face *face; |
| 2013 | Lisp_Object charset, rfont_def; |
| 2014 | int cs_id; |
| 2015 | |
| 2016 | if (NILP (position)) |
| 2017 | { |
| 2018 | CHECK_CHARACTER (ch); |
| 2019 | c = XINT (ch); |
| 2020 | f = XFRAME (selected_frame); |
| 2021 | face_id = DEFAULT_FACE_ID; |
| 2022 | pos = -1; |
| 2023 | cs_id = -1; |
| 2024 | } |
| 2025 | else |
| 2026 | { |
| 2027 | Lisp_Object window, charset; |
| 2028 | struct window *w; |
| 2029 | |
| 2030 | CHECK_NUMBER_COERCE_MARKER (position); |
| 2031 | pos = XINT (position); |
| 2032 | if (pos < BEGV || pos >= ZV) |
| 2033 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 2034 | pos_byte = CHAR_TO_BYTE (pos); |
| 2035 | if (NILP (ch)) |
| 2036 | c = FETCH_CHAR (pos_byte); |
| 2037 | else |
| 2038 | { |
| 2039 | CHECK_NATNUM (ch); |
| 2040 | c = XINT (ch); |
| 2041 | } |
| 2042 | window = Fget_buffer_window (Fcurrent_buffer (), Qnil); |
| 2043 | if (NILP (window)) |
| 2044 | return Qnil; |
| 2045 | w = XWINDOW (window); |
| 2046 | f = XFRAME (w->frame); |
| 2047 | face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0); |
| 2048 | charset = Fget_char_property (position, Qcharset, Qnil); |
| 2049 | if (CHARSETP (charset)) |
| 2050 | cs_id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 2051 | else |
| 2052 | cs_id = -1; |
| 2053 | } |
| 2054 | if (! CHAR_VALID_P (c, 0)) |
| 2055 | return Qnil; |
| 2056 | face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil); |
| 2057 | face = FACE_FROM_ID (f, face_id); |
| 2058 | rfont_def = fontset_font (FONTSET_FROM_ID (face->fontset), c, face, cs_id); |
| 2059 | #ifdef USE_FONT_BACKEND |
| 2060 | if (enable_font_backend) |
| 2061 | { |
| 2062 | if (VECTORP (rfont_def) && ! NILP (AREF (rfont_def, 3))) |
| 2063 | { |
| 2064 | Lisp_Object font_object = AREF (rfont_def, 3); |
| 2065 | struct font *font = XSAVE_VALUE (font_object)->pointer; |
| 2066 | unsigned code = font->driver->encode_char (font, c); |
| 2067 | Lisp_Object fontname = font_get_name (font_object); |
| 2068 | |
| 2069 | if (code == FONT_INVALID_CODE) |
| 2070 | return Qnil; |
| 2071 | if (code <= MOST_POSITIVE_FIXNUM) |
| 2072 | return Fcons (fontname, make_number (code)); |
| 2073 | return Fcons (fontname, Fcons (make_number (code >> 16), |
| 2074 | make_number (code & 0xFFFF))); |
| 2075 | } |
| 2076 | return Qnil; |
| 2077 | } |
| 2078 | #endif /* USE_FONT_BACKEND */ |
| 2079 | if (VECTORP (rfont_def) && STRINGP (AREF (rfont_def, 3))) |
| 2080 | { |
| 2081 | Lisp_Object font_def; |
| 2082 | struct font_info *fontp; |
| 2083 | struct charset *charset; |
| 2084 | XChar2b char2b; |
| 2085 | int code; |
| 2086 | |
| 2087 | font_def = AREF (rfont_def, 2); |
| 2088 | charset = CHARSET_FROM_ID (XINT (AREF (font_def, 1))); |
| 2089 | code = ENCODE_CHAR (charset, c); |
| 2090 | if (code == CHARSET_INVALID_CODE (charset)) |
| 2091 | return (Fcons (AREF (rfont_def, 3), Qnil)); |
| 2092 | STORE_XCHAR2B (&char2b, ((code >> 8) & 0xFF), (code & 0xFF)); |
| 2093 | fontp = (*get_font_info_func) (f, XINT (AREF (rfont_def, 1))); |
| 2094 | FRAME_RIF (f)->encode_char (c, &char2b, fontp, charset, NULL); |
| 2095 | code = (XCHAR2B_BYTE1 (&char2b) << 8) | XCHAR2B_BYTE2 (&char2b); |
| 2096 | return (Fcons (AREF (rfont_def, 3), make_number (code))); |
| 2097 | } |
| 2098 | return Qnil; |
| 2099 | } |
| 2100 | |
| 2101 | |
| 2102 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, |
| 2103 | doc: /* Return information about a fontset FONTSET on frame FRAME. |
| 2104 | The value is a char-table of which elements has this form. |
| 2105 | |
| 2106 | ((FONT-PATTERN OPENED-FONT ...) ...) |
| 2107 | |
| 2108 | FONT-PATTERN is a vector: |
| 2109 | |
| 2110 | [ FAMILY WEIGHT SLANT SWIDTH ADSTYLE REGISTRY ] |
| 2111 | |
| 2112 | or a string of font name pattern. |
| 2113 | |
| 2114 | OPENED-FONT is a name of a font actually opened. |
| 2115 | |
| 2116 | The char-table has one extra slot. The value is a char-table |
| 2117 | containing the information about the derived fonts from the default |
| 2118 | fontset. The format is the same as abobe. */) |
| 2119 | (fontset, frame) |
| 2120 | Lisp_Object fontset, frame; |
| 2121 | { |
| 2122 | FRAME_PTR f; |
| 2123 | Lisp_Object *realized[2], fontsets[2], tables[2]; |
| 2124 | Lisp_Object val, elt; |
| 2125 | int c, i, j, k; |
| 2126 | |
| 2127 | (*check_window_system_func) (); |
| 2128 | |
| 2129 | fontset = check_fontset_name (fontset); |
| 2130 | |
| 2131 | if (NILP (frame)) |
| 2132 | frame = selected_frame; |
| 2133 | CHECK_LIVE_FRAME (frame); |
| 2134 | f = XFRAME (frame); |
| 2135 | |
| 2136 | /* Recode fontsets realized on FRAME from the base fontset FONTSET |
| 2137 | in the table `realized'. */ |
| 2138 | realized[0] = (Lisp_Object *) alloca (sizeof (Lisp_Object) |
| 2139 | * ASIZE (Vfontset_table)); |
| 2140 | for (i = j = 0; i < ASIZE (Vfontset_table); i++) |
| 2141 | { |
| 2142 | elt = FONTSET_FROM_ID (i); |
| 2143 | if (!NILP (elt) |
| 2144 | && EQ (FONTSET_BASE (elt), fontset) |
| 2145 | && EQ (FONTSET_FRAME (elt), frame)) |
| 2146 | realized[0][j++] = elt; |
| 2147 | } |
| 2148 | realized[0][j] = Qnil; |
| 2149 | |
| 2150 | realized[1] = (Lisp_Object *) alloca (sizeof (Lisp_Object) |
| 2151 | * ASIZE (Vfontset_table)); |
| 2152 | for (i = j = 0; ! NILP (realized[0][i]); i++) |
| 2153 | { |
| 2154 | elt = FONTSET_DEFAULT (realized[0][i]); |
| 2155 | if (! NILP (elt)) |
| 2156 | realized[1][j++] = elt; |
| 2157 | } |
| 2158 | realized[1][j] = Qnil; |
| 2159 | |
| 2160 | tables[0] = Fmake_char_table (Qfontset_info, Qnil); |
| 2161 | tables[1] = Fmake_char_table (Qnil, Qnil); |
| 2162 | XCHAR_TABLE (tables[0])->extras[0] = tables[1]; |
| 2163 | fontsets[0] = fontset; |
| 2164 | fontsets[1] = Vdefault_fontset; |
| 2165 | |
| 2166 | /* Accumulate information of the fontset in TABLE. The format of |
| 2167 | each element is ((FONT-SPEC OPENED-FONT ...) ...). */ |
| 2168 | for (k = 0; k <= 1; k++) |
| 2169 | { |
| 2170 | for (c = 0; c <= MAX_CHAR; ) |
| 2171 | { |
| 2172 | int from, to; |
| 2173 | |
| 2174 | if (c <= MAX_5_BYTE_CHAR) |
| 2175 | { |
| 2176 | val = char_table_ref_and_range (fontsets[k], c, &from, &to); |
| 2177 | if (to > MAX_5_BYTE_CHAR) |
| 2178 | to = MAX_5_BYTE_CHAR; |
| 2179 | } |
| 2180 | else |
| 2181 | { |
| 2182 | val = FONTSET_FALLBACK (fontsets[k]); |
| 2183 | to = MAX_CHAR; |
| 2184 | } |
| 2185 | if (VECTORP (val)) |
| 2186 | { |
| 2187 | Lisp_Object alist; |
| 2188 | |
| 2189 | /* At first, set ALIST to ((FONT-SPEC) ...). */ |
| 2190 | for (alist = Qnil, i = 0; i < ASIZE (val); i++) |
| 2191 | { |
| 2192 | if (NILP (AREF (val, i))) |
| 2193 | alist = Fcons (Qnil, alist); |
| 2194 | else |
| 2195 | alist = Fcons (Fcons (AREF (AREF (val, i), 0), Qnil), alist); |
| 2196 | } |
| 2197 | alist = Fnreverse (alist); |
| 2198 | |
| 2199 | /* Then store opend font names to cdr of each elements. */ |
| 2200 | for (i = 0; ! NILP (realized[k][i]); i++) |
| 2201 | { |
| 2202 | if (c <= MAX_5_BYTE_CHAR) |
| 2203 | val = FONTSET_REF (realized[k][i], c); |
| 2204 | else |
| 2205 | val = FONTSET_FALLBACK (realized[k][i]); |
| 2206 | if (! VECTORP (val)) |
| 2207 | continue; |
| 2208 | #ifdef USE_FONT_BACKEND |
| 2209 | /* VAL: [int int ? |
| 2210 | [FACE-ID FONT-INDEX FONT-DEF FONT-ENTITY/OBJECT] |
| 2211 | ...] */ |
| 2212 | if (enable_font_backend) |
| 2213 | for (j = 3; j < ASIZE (val); j++) |
| 2214 | { |
| 2215 | elt = AREF (val, j); |
| 2216 | if (INTEGERP (AREF (elt, 1)) |
| 2217 | && XINT (AREF (elt, 1)) >= 0) |
| 2218 | { |
| 2219 | Lisp_Object font_object = AREF (elt, 3); |
| 2220 | |
| 2221 | if (FONT_OBJECT_P (font_object)) |
| 2222 | { |
| 2223 | struct font *font |
| 2224 | = XSAVE_VALUE (font_object)->pointer; |
| 2225 | char *name = font->font.full_name;; |
| 2226 | int len = strlen (name); |
| 2227 | Lisp_Object slot; |
| 2228 | |
| 2229 | slot = Fassq (AREF (AREF (elt, 2), 0), alist); |
| 2230 | nconc2 (slot, |
| 2231 | Fcons (make_unibyte_string (name, len), |
| 2232 | Qnil)); |
| 2233 | } |
| 2234 | } |
| 2235 | } |
| 2236 | else |
| 2237 | #endif /* not USE_FONT_BACKEND */ |
| 2238 | { |
| 2239 | /* VAL is [int int ? |
| 2240 | [FACE-ID FONT-INDEX FONT-DEF FONT-NAME] ...]. |
| 2241 | If a font of an element is already opened, |
| 2242 | FONT-NAME is the name of a opened font. */ |
| 2243 | for (j = 3; j < ASIZE (val); j++) |
| 2244 | if (STRINGP (AREF (AREF (val, j), 3))) |
| 2245 | { |
| 2246 | Lisp_Object font_idx; |
| 2247 | |
| 2248 | font_idx = AREF (AREF (val, j), 1); |
| 2249 | elt = Fassq (AREF (AREF (AREF (val, j), 2), 0), |
| 2250 | alist); |
| 2251 | if (CONSP (elt) |
| 2252 | && NILP (Fmemq (font_idx, XCDR(elt)))) |
| 2253 | nconc2 (elt, Fcons (font_idx, Qnil)); |
| 2254 | } |
| 2255 | for (val = alist; CONSP (val); val = XCDR (val)) |
| 2256 | for (elt = XCDR (XCAR (val)); CONSP (elt); |
| 2257 | elt = XCDR (elt)) |
| 2258 | { |
| 2259 | struct font_info *font_info |
| 2260 | = (*get_font_info_func) (f, XINT (XCAR (elt))); |
| 2261 | XSETCAR (elt, build_string (font_info->full_name)); |
| 2262 | } |
| 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | /* Store ALIST in TBL for characters C..TO. */ |
| 2267 | if (c <= MAX_5_BYTE_CHAR) |
| 2268 | char_table_set_range (tables[k], c, to, alist); |
| 2269 | else |
| 2270 | XCHAR_TABLE (tables[k])->defalt = alist; |
| 2271 | } |
| 2272 | c = to + 1; |
| 2273 | } |
| 2274 | } |
| 2275 | |
| 2276 | return tables[0]; |
| 2277 | } |
| 2278 | |
| 2279 | |
| 2280 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 3, 0, |
| 2281 | doc: /* Return a font name pattern for character CH in fontset NAME. |
| 2282 | If NAME is t, find a pattern in the default fontset. |
| 2283 | |
| 2284 | The value has the form (FAMILY . REGISTRY), where FAMILY is a font |
| 2285 | family name and REGISTRY is a font registry name. This is actually |
| 2286 | the first font name pattern for CH in the fontset or in the default |
| 2287 | fontset. |
| 2288 | |
| 2289 | If the 2nd optional arg ALL is non-nil, return a list of all font name |
| 2290 | patterns. */) |
| 2291 | (name, ch, all) |
| 2292 | Lisp_Object name, ch, all; |
| 2293 | { |
| 2294 | int c; |
| 2295 | Lisp_Object fontset, elt, list, repertory, val; |
| 2296 | int i, j; |
| 2297 | |
| 2298 | fontset = check_fontset_name (name); |
| 2299 | |
| 2300 | CHECK_CHARACTER (ch); |
| 2301 | c = XINT (ch); |
| 2302 | list = Qnil; |
| 2303 | while (1) |
| 2304 | { |
| 2305 | for (i = 0, elt = FONTSET_REF (fontset, c); i < 2; |
| 2306 | i++, elt = FONTSET_FALLBACK (fontset)) |
| 2307 | if (VECTORP (elt)) |
| 2308 | for (j = 0; j < ASIZE (elt); j++) |
| 2309 | { |
| 2310 | val = AREF (elt, j); |
| 2311 | repertory = AREF (val, 1); |
| 2312 | if (INTEGERP (repertory)) |
| 2313 | { |
| 2314 | struct charset *charset = CHARSET_FROM_ID (XINT (repertory)); |
| 2315 | |
| 2316 | if (! CHAR_CHARSET_P (c, charset)) |
| 2317 | continue; |
| 2318 | } |
| 2319 | else if (CHAR_TABLE_P (repertory)) |
| 2320 | { |
| 2321 | if (NILP (CHAR_TABLE_REF (repertory, c))) |
| 2322 | continue; |
| 2323 | } |
| 2324 | val = AREF (val, 0); |
| 2325 | val = Fcons (AREF (val, 0), AREF (val, 5)); |
| 2326 | if (NILP (all)) |
| 2327 | return val; |
| 2328 | list = Fcons (val, list); |
| 2329 | } |
| 2330 | if (EQ (fontset, Vdefault_fontset)) |
| 2331 | break; |
| 2332 | fontset = Vdefault_fontset; |
| 2333 | } |
| 2334 | return (Fnreverse (list)); |
| 2335 | } |
| 2336 | |
| 2337 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, |
| 2338 | doc: /* Return a list of all defined fontset names. */) |
| 2339 | () |
| 2340 | { |
| 2341 | Lisp_Object fontset, list; |
| 2342 | int i; |
| 2343 | |
| 2344 | list = Qnil; |
| 2345 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 2346 | { |
| 2347 | fontset = FONTSET_FROM_ID (i); |
| 2348 | if (!NILP (fontset) |
| 2349 | && BASE_FONTSET_P (fontset)) |
| 2350 | list = Fcons (FONTSET_NAME (fontset), list); |
| 2351 | } |
| 2352 | |
| 2353 | return list; |
| 2354 | } |
| 2355 | |
| 2356 | |
| 2357 | #ifdef FONTSET_DEBUG |
| 2358 | |
| 2359 | Lisp_Object |
| 2360 | dump_fontset (fontset) |
| 2361 | Lisp_Object fontset; |
| 2362 | { |
| 2363 | Lisp_Object vec; |
| 2364 | |
| 2365 | vec = Fmake_vector (make_number (3), Qnil); |
| 2366 | ASET (vec, 0, FONTSET_ID (fontset)); |
| 2367 | |
| 2368 | if (BASE_FONTSET_P (fontset)) |
| 2369 | { |
| 2370 | ASET (vec, 1, FONTSET_NAME (fontset)); |
| 2371 | } |
| 2372 | else |
| 2373 | { |
| 2374 | Lisp_Object frame; |
| 2375 | |
| 2376 | frame = FONTSET_FRAME (fontset); |
| 2377 | if (FRAMEP (frame)) |
| 2378 | { |
| 2379 | FRAME_PTR f = XFRAME (frame); |
| 2380 | |
| 2381 | if (FRAME_LIVE_P (f)) |
| 2382 | ASET (vec, 1, |
| 2383 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), f->name)); |
| 2384 | else |
| 2385 | ASET (vec, 1, |
| 2386 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), Qnil)); |
| 2387 | } |
| 2388 | if (!NILP (FONTSET_DEFAULT (fontset))) |
| 2389 | ASET (vec, 2, FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 2390 | } |
| 2391 | return vec; |
| 2392 | } |
| 2393 | |
| 2394 | DEFUN ("fontset-list-all", Ffontset_list_all, Sfontset_list_all, 0, 0, 0, |
| 2395 | doc: /* Return a brief summary of all fontsets for debug use. */) |
| 2396 | () |
| 2397 | { |
| 2398 | Lisp_Object val; |
| 2399 | int i; |
| 2400 | |
| 2401 | for (i = 0, val = Qnil; i < ASIZE (Vfontset_table); i++) |
| 2402 | if (! NILP (AREF (Vfontset_table, i))) |
| 2403 | val = Fcons (dump_fontset (AREF (Vfontset_table, i)), val); |
| 2404 | return (Fnreverse (val)); |
| 2405 | } |
| 2406 | #endif /* FONTSET_DEBUG */ |
| 2407 | |
| 2408 | void |
| 2409 | syms_of_fontset () |
| 2410 | { |
| 2411 | if (!load_font_func) |
| 2412 | /* Window system initializer should have set proper functions. */ |
| 2413 | abort (); |
| 2414 | |
| 2415 | DEFSYM (Qfontset, "fontset"); |
| 2416 | Fput (Qfontset, Qchar_table_extra_slots, make_number (9)); |
| 2417 | DEFSYM (Qfontset_info, "fontset-info"); |
| 2418 | Fput (Qfontset_info, Qchar_table_extra_slots, make_number (1)); |
| 2419 | |
| 2420 | DEFSYM (Qprepend, "prepend"); |
| 2421 | DEFSYM (Qappend, "append"); |
| 2422 | DEFSYM (Qlatin, "latin"); |
| 2423 | |
| 2424 | Vcached_fontset_data = Qnil; |
| 2425 | staticpro (&Vcached_fontset_data); |
| 2426 | |
| 2427 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
| 2428 | staticpro (&Vfontset_table); |
| 2429 | |
| 2430 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); |
| 2431 | staticpro (&Vdefault_fontset); |
| 2432 | FONTSET_ID (Vdefault_fontset) = make_number (0); |
| 2433 | FONTSET_NAME (Vdefault_fontset) |
| 2434 | = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"); |
| 2435 | ASET (Vfontset_table, 0, Vdefault_fontset); |
| 2436 | next_fontset_id = 1; |
| 2437 | |
| 2438 | auto_fontset_alist = Qnil; |
| 2439 | staticpro (&auto_fontset_alist); |
| 2440 | |
| 2441 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, |
| 2442 | doc: /* |
| 2443 | Alist of fontname patterns vs the corresponding encoding and repertory info. |
| 2444 | Each element looks like (REGEXP . (ENCODING . REPERTORY)), |
| 2445 | where ENCODING is a charset or a char-table, |
| 2446 | and REPERTORY is a charset, a char-table, or nil. |
| 2447 | |
| 2448 | If ENCDING and REPERTORY are the same, the element can have the form |
| 2449 | \(REGEXP . ENCODING). |
| 2450 | |
| 2451 | ENCODING is for converting a character to a glyph code of the font. |
| 2452 | If ENCODING is a charset, encoding a character by the charset gives |
| 2453 | the corresponding glyph code. If ENCODING is a char-table, looking up |
| 2454 | the table by a character gives the corresponding glyph code. |
| 2455 | |
| 2456 | REPERTORY specifies a repertory of characters supported by the font. |
| 2457 | If REPERTORY is a charset, all characters beloging to the charset are |
| 2458 | supported. If REPERTORY is a char-table, all characters who have a |
| 2459 | non-nil value in the table are supported. It REPERTORY is nil, Emacs |
| 2460 | gets the repertory information by an opened font and ENCODING. */); |
| 2461 | Vfont_encoding_alist = Qnil; |
| 2462 | |
| 2463 | DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist, |
| 2464 | doc: /* |
| 2465 | Alist of charsets vs the charsets to determine the preferred font encoding. |
| 2466 | Each element looks like (CHARSET . ENCDOING-CHARSET), |
| 2467 | where ENCODING-CHARSET is a charset registered in the variable |
| 2468 | `font-encoding-alist' as ENCODING. |
| 2469 | |
| 2470 | When a text has a property `charset' and the value is CHARSET, a font |
| 2471 | whose encoding corresponds to ENCODING-CHARSET is preferred. */); |
| 2472 | Vfont_encoding_charset_alist = Qnil; |
| 2473 | |
| 2474 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
| 2475 | doc: /* |
| 2476 | Char table of characters whose ascent values should be ignored. |
| 2477 | If an entry for a character is non-nil, the ascent value of the glyph |
| 2478 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font. |
| 2479 | |
| 2480 | This affects how a composite character which contains |
| 2481 | such a character is displayed on screen. */); |
| 2482 | Vuse_default_ascent = Qnil; |
| 2483 | |
| 2484 | DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition, |
| 2485 | doc: /* |
| 2486 | Char table of characters which is not composed relatively. |
| 2487 | If an entry for a character is non-nil, a composition sequence |
| 2488 | which contains that character is displayed so that |
| 2489 | the glyph of that character is put without considering |
| 2490 | an ascent and descent value of a previous character. */); |
| 2491 | Vignore_relative_composition = Qnil; |
| 2492 | |
| 2493 | DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist, |
| 2494 | doc: /* Alist of fontname vs list of the alternate fontnames. |
| 2495 | When a specified font name is not found, the corresponding |
| 2496 | alternate fontnames (if any) are tried instead. */); |
| 2497 | Valternate_fontname_alist = Qnil; |
| 2498 | |
| 2499 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
| 2500 | doc: /* Alist of fontset names vs the aliases. */); |
| 2501 | Vfontset_alias_alist = Fcons (Fcons (FONTSET_NAME (Vdefault_fontset), |
| 2502 | build_string ("fontset-default")), |
| 2503 | Qnil); |
| 2504 | |
| 2505 | DEFVAR_LISP ("vertical-centering-font-regexp", |
| 2506 | &Vvertical_centering_font_regexp, |
| 2507 | doc: /* *Regexp matching font names that require vertical centering on display. |
| 2508 | When a character is displayed with such fonts, the character is displayed |
| 2509 | at the vertical center of lines. */); |
| 2510 | Vvertical_centering_font_regexp = Qnil; |
| 2511 | |
| 2512 | DEFVAR_LISP ("otf-script-alist", &Votf_script_alist, |
| 2513 | doc: /* Alist of OpenType script tags vs the corresponding script names. */); |
| 2514 | Votf_script_alist = Qnil; |
| 2515 | |
| 2516 | defsubr (&Squery_fontset); |
| 2517 | defsubr (&Snew_fontset); |
| 2518 | defsubr (&Sset_fontset_font); |
| 2519 | defsubr (&Sfont_info); |
| 2520 | defsubr (&Sinternal_char_font); |
| 2521 | defsubr (&Sfontset_info); |
| 2522 | defsubr (&Sfontset_font); |
| 2523 | defsubr (&Sfontset_list); |
| 2524 | #ifdef FONTSET_DEBUG |
| 2525 | defsubr (&Sfontset_list_all); |
| 2526 | #endif |
| 2527 | } |
| 2528 | |
| 2529 | /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537 |
| 2530 | (do not change this comment) */ |