| 1 | /* Fontset handler. |
| 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 3 | Free Software Foundation, Inc. |
| 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 5 | 2005, 2006, 2007, 2008, 2009, 2010 |
| 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 of the License, or |
| 17 | (at your option) 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. If not, see <http://www.gnu.org/licenses/>. */ |
| 26 | |
| 27 | /* #define FONTSET_DEBUG */ |
| 28 | |
| 29 | #include <config.h> |
| 30 | #include <stdio.h> |
| 31 | #include <setjmp.h> |
| 32 | |
| 33 | #include "lisp.h" |
| 34 | #include "blockinput.h" |
| 35 | #include "buffer.h" |
| 36 | #include "character.h" |
| 37 | #include "charset.h" |
| 38 | #include "ccl.h" |
| 39 | #include "keyboard.h" |
| 40 | #include "frame.h" |
| 41 | #include "dispextern.h" |
| 42 | #include "intervals.h" |
| 43 | #include "fontset.h" |
| 44 | #include "window.h" |
| 45 | #ifdef HAVE_X_WINDOWS |
| 46 | #include "xterm.h" |
| 47 | #endif |
| 48 | #ifdef WINDOWSNT |
| 49 | #include "w32term.h" |
| 50 | #endif |
| 51 | #ifdef HAVE_NS |
| 52 | #include "nsterm.h" |
| 53 | #endif |
| 54 | #include "termhooks.h" |
| 55 | |
| 56 | #include "font.h" |
| 57 | |
| 58 | #undef xassert |
| 59 | #ifdef FONTSET_DEBUG |
| 60 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
| 61 | #undef INLINE |
| 62 | #define INLINE |
| 63 | #else /* not FONTSET_DEBUG */ |
| 64 | #define xassert(X) (void) 0 |
| 65 | #endif /* not FONTSET_DEBUG */ |
| 66 | |
| 67 | EXFUN (Fclear_face_cache, 1); |
| 68 | |
| 69 | /* FONTSET |
| 70 | |
| 71 | A fontset is a collection of font related information to give |
| 72 | similar appearance (style, etc) of characters. A fontset has two |
| 73 | roles. One is to use for the frame parameter `font' as if it is an |
| 74 | ASCII font. In that case, Emacs uses the font specified for |
| 75 | `ascii' script for the frame's default font. |
| 76 | |
| 77 | Another role, the more important one, is to provide information |
| 78 | about which font to use for each non-ASCII character. |
| 79 | |
| 80 | There are two kinds of fontsets; base and realized. A base fontset |
| 81 | is created by `new-fontset' from Emacs Lisp explicitly. A realized |
| 82 | fontset is created implicitly when a face is realized for ASCII |
| 83 | characters. A face is also realized for non-ASCII characters based |
| 84 | on an ASCII face. All of non-ASCII faces based on the same ASCII |
| 85 | face share the same realized fontset. |
| 86 | |
| 87 | A fontset object is implemented by a char-table whose default value |
| 88 | and parent are always nil. |
| 89 | |
| 90 | An element of a base fontset is a vector of FONT-DEFs which itself |
| 91 | is a vector [ FONT-SPEC ENCODING REPERTORY ]. |
| 92 | |
| 93 | An element of a realized fontset is nil, t, 0, or a vector of this |
| 94 | form: |
| 95 | |
| 96 | [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF |
| 97 | RFONT-DEF0 RFONT-DEF1 ... ] |
| 98 | |
| 99 | RFONT-DEFn (i.e. Realized FONT-DEF) has this form: |
| 100 | |
| 101 | [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ] |
| 102 | |
| 103 | RFONT-DEFn are automatically reordered by the current charset |
| 104 | priority list. |
| 105 | |
| 106 | The value nil means that we have not yet generated the above vector |
| 107 | from the base of the fontset. |
| 108 | |
| 109 | The value t means that no font is available for the corresponding |
| 110 | range of characters. |
| 111 | |
| 112 | The value 0 means that no font is available for the corresponding |
| 113 | range of characters in this fontset, but may be available in the |
| 114 | default fontset. |
| 115 | |
| 116 | |
| 117 | A fontset has 9 extra slots. |
| 118 | |
| 119 | The 1st slot: the ID number of the fontset |
| 120 | |
| 121 | The 2nd slot: |
| 122 | base: the name of the fontset |
| 123 | realized: nil |
| 124 | |
| 125 | The 3rd slot: |
| 126 | base: nil |
| 127 | realized: the base fontset |
| 128 | |
| 129 | The 4th slot: |
| 130 | base: nil |
| 131 | realized: the frame that the fontset belongs to |
| 132 | |
| 133 | The 5th slot: |
| 134 | base: the font name for ASCII characters |
| 135 | realized: nil |
| 136 | |
| 137 | The 6th slot: |
| 138 | base: nil |
| 139 | realized: the ID number of a face to use for characters that |
| 140 | has no font in a realized fontset. |
| 141 | |
| 142 | The 7th slot: |
| 143 | base: nil |
| 144 | realized: Alist of font index vs the corresponding repertory |
| 145 | char-table. |
| 146 | |
| 147 | The 8th slot: |
| 148 | base: nil |
| 149 | realized: If the base is not the default fontset, a fontset |
| 150 | realized from the default fontset, else nil. |
| 151 | |
| 152 | The 9th slot: |
| 153 | base: Same as element value (but for fallback fonts). |
| 154 | realized: Likewise. |
| 155 | |
| 156 | All fontsets are recorded in the vector Vfontset_table. |
| 157 | |
| 158 | |
| 159 | DEFAULT FONTSET |
| 160 | |
| 161 | There's a special base fontset named `default fontset' which |
| 162 | defines the default font specifications. When a base fontset |
| 163 | doesn't specify a font for a specific character, the corresponding |
| 164 | value in the default fontset is used. |
| 165 | |
| 166 | The parent of a realized fontset created for such a face that has |
| 167 | no fontset is the default fontset. |
| 168 | |
| 169 | |
| 170 | These structures are hidden from the other codes than this file. |
| 171 | The other codes handle fontsets only by their ID numbers. They |
| 172 | usually use the variable name `fontset' for IDs. But, in this |
| 173 | file, we always use varialbe name `id' for IDs, and name `fontset' |
| 174 | for an actual fontset object, i.e., char-table. |
| 175 | |
| 176 | */ |
| 177 | |
| 178 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ |
| 179 | |
| 180 | static Lisp_Object Qfontset; |
| 181 | static Lisp_Object Qfontset_info; |
| 182 | static Lisp_Object Qprepend, Qappend; |
| 183 | Lisp_Object Qlatin; |
| 184 | |
| 185 | /* Vector containing all fontsets. */ |
| 186 | static Lisp_Object Vfontset_table; |
| 187 | |
| 188 | /* Next possibly free fontset ID. Usually this keeps the minimum |
| 189 | fontset ID not yet used. */ |
| 190 | static int next_fontset_id; |
| 191 | |
| 192 | /* The default fontset. This gives default FAMILY and REGISTRY of |
| 193 | font for each character. */ |
| 194 | static Lisp_Object Vdefault_fontset; |
| 195 | |
| 196 | Lisp_Object Vfont_encoding_charset_alist; |
| 197 | Lisp_Object Vuse_default_ascent; |
| 198 | Lisp_Object Vignore_relative_composition; |
| 199 | Lisp_Object Valternate_fontname_alist; |
| 200 | Lisp_Object Vfontset_alias_alist; |
| 201 | Lisp_Object Vvertical_centering_font_regexp; |
| 202 | Lisp_Object Votf_script_alist; |
| 203 | |
| 204 | /* Check if any window system is used now. */ |
| 205 | void (*check_window_system_func) (void); |
| 206 | |
| 207 | |
| 208 | /* Prototype declarations for static functions. */ |
| 209 | static Lisp_Object fontset_add (Lisp_Object, Lisp_Object, Lisp_Object, |
| 210 | Lisp_Object); |
| 211 | static Lisp_Object fontset_find_font (Lisp_Object, int, struct face *, |
| 212 | int, int); |
| 213 | static void reorder_font_vector (Lisp_Object, struct font *); |
| 214 | static Lisp_Object fontset_font (Lisp_Object, int, struct face *, int); |
| 215 | static Lisp_Object make_fontset (Lisp_Object, Lisp_Object, Lisp_Object); |
| 216 | static Lisp_Object fontset_pattern_regexp (Lisp_Object); |
| 217 | static void accumulate_script_ranges (Lisp_Object, Lisp_Object, |
| 218 | Lisp_Object); |
| 219 | Lisp_Object find_font_encoding (Lisp_Object); |
| 220 | |
| 221 | static void set_fontset_font (Lisp_Object, Lisp_Object); |
| 222 | |
| 223 | #ifdef FONTSET_DEBUG |
| 224 | |
| 225 | /* Return 1 if ID is a valid fontset id, else return 0. */ |
| 226 | |
| 227 | static int |
| 228 | fontset_id_valid_p (id) |
| 229 | int id; |
| 230 | { |
| 231 | return (id >= 0 && id < ASIZE (Vfontset_table) - 1); |
| 232 | } |
| 233 | |
| 234 | #endif |
| 235 | |
| 236 | |
| 237 | \f |
| 238 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ |
| 239 | |
| 240 | /* Return the fontset with ID. No check of ID's validness. */ |
| 241 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) |
| 242 | |
| 243 | /* Macros to access special values of FONTSET. */ |
| 244 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] |
| 245 | |
| 246 | /* Macros to access special values of (base) FONTSET. */ |
| 247 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] |
| 248 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4] |
| 249 | #define FONTSET_SPEC(fontset) XCHAR_TABLE (fontset)->extras[5] |
| 250 | |
| 251 | /* Macros to access special values of (realized) FONTSET. */ |
| 252 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2] |
| 253 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3] |
| 254 | #define FONTSET_OBJLIST(fontset) XCHAR_TABLE (fontset)->extras[4] |
| 255 | #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5] |
| 256 | #define FONTSET_REPERTORY(fontset) XCHAR_TABLE (fontset)->extras[6] |
| 257 | #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7] |
| 258 | |
| 259 | /* For both base and realized fontset. */ |
| 260 | #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8] |
| 261 | |
| 262 | #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset))) |
| 263 | |
| 264 | |
| 265 | /* Macros for FONT-DEF and RFONT-DEF of fontset. */ |
| 266 | #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \ |
| 267 | do { \ |
| 268 | (font_def) = Fmake_vector (make_number (3), (font_spec)); \ |
| 269 | ASET ((font_def), 1, encoding); \ |
| 270 | ASET ((font_def), 2, repertory); \ |
| 271 | } while (0) |
| 272 | |
| 273 | #define FONT_DEF_SPEC(font_def) AREF (font_def, 0) |
| 274 | #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1) |
| 275 | #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2) |
| 276 | |
| 277 | #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0) |
| 278 | #define RFONT_DEF_SET_FACE(rfont_def, face_id) \ |
| 279 | ASET ((rfont_def), 0, make_number (face_id)) |
| 280 | #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1) |
| 281 | #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1)) |
| 282 | #define RFONT_DEF_REPERTORY(rfont_def) FONT_DEF_REPERTORY (AREF (rfont_def, 1)) |
| 283 | #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2) |
| 284 | #define RFONT_DEF_SET_OBJECT(rfont_def, object) \ |
| 285 | ASET ((rfont_def), 2, (object)) |
| 286 | /* Score of RFONT_DEF is an integer value; the lowest 8 bits represent |
| 287 | the order of listing by font backends, the higher bits represents |
| 288 | the order given by charset priority list. The smaller value is |
| 289 | preferable. */ |
| 290 | #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3)) |
| 291 | #define RFONT_DEF_SET_SCORE(rfont_def, score) \ |
| 292 | ASET ((rfont_def), 3, make_number (score)) |
| 293 | #define RFONT_DEF_NEW(rfont_def, font_def) \ |
| 294 | do { \ |
| 295 | (rfont_def) = Fmake_vector (make_number (4), Qnil); \ |
| 296 | ASET ((rfont_def), 1, (font_def)); \ |
| 297 | RFONT_DEF_SET_SCORE ((rfont_def), 0); \ |
| 298 | } while (0) |
| 299 | |
| 300 | |
| 301 | /* Return the element of FONTSET for the character C. If FONTSET is a |
| 302 | base fontset other then the default fontset and FONTSET doesn't |
| 303 | contain information for C, return the information in the default |
| 304 | fontset. */ |
| 305 | |
| 306 | #define FONTSET_REF(fontset, c) \ |
| 307 | (EQ (fontset, Vdefault_fontset) \ |
| 308 | ? CHAR_TABLE_REF (fontset, c) \ |
| 309 | : fontset_ref ((fontset), (c))) |
| 310 | |
| 311 | static Lisp_Object |
| 312 | fontset_ref (Lisp_Object fontset, int c) |
| 313 | { |
| 314 | Lisp_Object elt; |
| 315 | |
| 316 | elt = CHAR_TABLE_REF (fontset, c); |
| 317 | if (NILP (elt) && ! EQ (fontset, Vdefault_fontset) |
| 318 | /* Don't check Vdefault_fontset for a realized fontset. */ |
| 319 | && NILP (FONTSET_BASE (fontset))) |
| 320 | elt = CHAR_TABLE_REF (Vdefault_fontset, c); |
| 321 | return elt; |
| 322 | } |
| 323 | |
| 324 | /* Set elements of FONTSET for characters in RANGE to the value ELT. |
| 325 | RANGE is a cons (FROM . TO), where FROM and TO are character codes |
| 326 | specifying a range. */ |
| 327 | |
| 328 | #define FONTSET_SET(fontset, range, elt) \ |
| 329 | Fset_char_table_range ((fontset), (range), (elt)) |
| 330 | |
| 331 | |
| 332 | /* Modify the elements of FONTSET for characters in RANGE by replacing |
| 333 | with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM |
| 334 | and TO are character codes specifying a range. If ADD is nil, |
| 335 | replace with ELT, if ADD is `prepend', prepend ELT, otherwise, |
| 336 | append ELT. */ |
| 337 | |
| 338 | #define FONTSET_ADD(fontset, range, elt, add) \ |
| 339 | (NILP (add) \ |
| 340 | ? (NILP (range) \ |
| 341 | ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \ |
| 342 | : Fset_char_table_range ((fontset), (range), \ |
| 343 | Fmake_vector (make_number (1), (elt)))) \ |
| 344 | : fontset_add ((fontset), (range), (elt), (add))) |
| 345 | |
| 346 | static Lisp_Object |
| 347 | fontset_add (Lisp_Object fontset, Lisp_Object range, Lisp_Object elt, Lisp_Object add) |
| 348 | { |
| 349 | Lisp_Object args[2]; |
| 350 | int idx = (EQ (add, Qappend) ? 0 : 1); |
| 351 | |
| 352 | args[1 - idx] = Fmake_vector (make_number (1), elt); |
| 353 | |
| 354 | if (CONSP (range)) |
| 355 | { |
| 356 | int from = XINT (XCAR (range)); |
| 357 | int to = XINT (XCDR (range)); |
| 358 | int from1, to1; |
| 359 | |
| 360 | do { |
| 361 | from1 = from, to1 = to; |
| 362 | args[idx] = char_table_ref_and_range (fontset, from, &from1, &to1); |
| 363 | char_table_set_range (fontset, from, to1, |
| 364 | NILP (args[idx]) ? args[1 - idx] |
| 365 | : Fvconcat (2, args)); |
| 366 | from = to1 + 1; |
| 367 | } while (from < to); |
| 368 | } |
| 369 | else |
| 370 | { |
| 371 | args[idx] = FONTSET_FALLBACK (fontset); |
| 372 | FONTSET_FALLBACK (fontset) |
| 373 | = NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args); |
| 374 | } |
| 375 | return Qnil; |
| 376 | } |
| 377 | |
| 378 | static int |
| 379 | fontset_compare_rfontdef (const void *val1, const void *val2) |
| 380 | { |
| 381 | return (RFONT_DEF_SCORE (*(Lisp_Object *) val1) |
| 382 | - RFONT_DEF_SCORE (*(Lisp_Object *) val2)); |
| 383 | } |
| 384 | |
| 385 | /* Update FONT-GROUP which has this form: |
| 386 | [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF |
| 387 | RFONT-DEF0 RFONT-DEF1 ... ] |
| 388 | Reorder RFONT-DEFs according to the current language, and update |
| 389 | CHARSET-ORDERED-LIST-TICK. |
| 390 | |
| 391 | If PREFERRED_FAMILY is not nil, that family has the higher priority |
| 392 | if the encoding charsets or languages in font-specs are the same. */ |
| 393 | |
| 394 | static void |
| 395 | reorder_font_vector (Lisp_Object font_group, struct font *font) |
| 396 | { |
| 397 | Lisp_Object vec, font_object; |
| 398 | int size; |
| 399 | int i; |
| 400 | int score_changed = 0; |
| 401 | |
| 402 | if (font) |
| 403 | XSETFONT (font_object, font); |
| 404 | else |
| 405 | font_object = Qnil; |
| 406 | |
| 407 | vec = XCDR (font_group); |
| 408 | size = ASIZE (vec); |
| 409 | /* Exclude the tailing nil element from the reordering. */ |
| 410 | if (NILP (AREF (vec, size - 1))) |
| 411 | size--; |
| 412 | |
| 413 | for (i = 0; i < size; i++) |
| 414 | { |
| 415 | Lisp_Object rfont_def = AREF (vec, i); |
| 416 | Lisp_Object font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 417 | Lisp_Object font_spec = FONT_DEF_SPEC (font_def); |
| 418 | int score = RFONT_DEF_SCORE (rfont_def) & 0xFF; |
| 419 | Lisp_Object otf_spec = Ffont_get (font_spec, QCotf); |
| 420 | |
| 421 | if (! NILP (otf_spec)) |
| 422 | /* A font-spec with :otf is preferable regardless of encoding |
| 423 | and language.. */ |
| 424 | ; |
| 425 | else if (! font_match_p (font_spec, font_object)) |
| 426 | { |
| 427 | Lisp_Object encoding = FONT_DEF_ENCODING (font_def); |
| 428 | |
| 429 | if (! NILP (encoding)) |
| 430 | { |
| 431 | Lisp_Object tail; |
| 432 | |
| 433 | for (tail = Vcharset_ordered_list; |
| 434 | ! EQ (tail, Vcharset_non_preferred_head) && CONSP (tail); |
| 435 | score += 0x100, tail = XCDR (tail)) |
| 436 | if (EQ (encoding, XCAR (tail))) |
| 437 | break; |
| 438 | } |
| 439 | else |
| 440 | { |
| 441 | Lisp_Object lang = Ffont_get (font_spec, QClang); |
| 442 | |
| 443 | if (! NILP (lang) |
| 444 | && ! EQ (lang, Vcurrent_iso639_language) |
| 445 | && (! CONSP (Vcurrent_iso639_language) |
| 446 | || NILP (Fmemq (lang, Vcurrent_iso639_language)))) |
| 447 | score |= 0x100; |
| 448 | } |
| 449 | } |
| 450 | if (RFONT_DEF_SCORE (rfont_def) != score) |
| 451 | { |
| 452 | RFONT_DEF_SET_SCORE (rfont_def, score); |
| 453 | score_changed = 1; |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | if (score_changed) |
| 458 | qsort (XVECTOR (vec)->contents, size, sizeof (Lisp_Object), |
| 459 | fontset_compare_rfontdef); |
| 460 | XSETCAR (font_group, make_number (charset_ordered_list_tick)); |
| 461 | } |
| 462 | |
| 463 | /* Return a font-group (actually a cons (-1 . FONT-GROUP-VECTOR)) for |
| 464 | character C in FONTSET. If C is -1, return a fallback font-group. |
| 465 | If C is not -1, the value may be Qt (FONTSET doesn't have a font |
| 466 | for C even in the fallback group, or 0 (a font for C may be found |
| 467 | only in the fallback group). */ |
| 468 | |
| 469 | static Lisp_Object |
| 470 | fontset_get_font_group (Lisp_Object fontset, int c) |
| 471 | { |
| 472 | Lisp_Object font_group; |
| 473 | Lisp_Object base_fontset; |
| 474 | int from = 0, to = MAX_CHAR, i; |
| 475 | |
| 476 | xassert (! BASE_FONTSET_P (fontset)); |
| 477 | if (c >= 0) |
| 478 | font_group = CHAR_TABLE_REF (fontset, c); |
| 479 | else |
| 480 | font_group = FONTSET_FALLBACK (fontset); |
| 481 | if (! NILP (font_group)) |
| 482 | return font_group; |
| 483 | base_fontset = FONTSET_BASE (fontset); |
| 484 | if (c >= 0) |
| 485 | font_group = char_table_ref_and_range (base_fontset, c, &from, &to); |
| 486 | else |
| 487 | font_group = FONTSET_FALLBACK (base_fontset); |
| 488 | if (NILP (font_group)) |
| 489 | { |
| 490 | font_group = make_number (0); |
| 491 | if (c >= 0) |
| 492 | char_table_set_range (fontset, from, to, font_group); |
| 493 | return font_group; |
| 494 | } |
| 495 | font_group = Fcopy_sequence (font_group); |
| 496 | for (i = 0; i < ASIZE (font_group); i++) |
| 497 | if (! NILP (AREF (font_group, i))) |
| 498 | { |
| 499 | Lisp_Object rfont_def; |
| 500 | |
| 501 | RFONT_DEF_NEW (rfont_def, AREF (font_group, i)); |
| 502 | /* Remember the original order. */ |
| 503 | RFONT_DEF_SET_SCORE (rfont_def, i); |
| 504 | ASET (font_group, i, rfont_def); |
| 505 | } |
| 506 | font_group = Fcons (make_number (-1), font_group); |
| 507 | if (c >= 0) |
| 508 | char_table_set_range (fontset, from, to, font_group); |
| 509 | else |
| 510 | FONTSET_FALLBACK (fontset) = font_group; |
| 511 | return font_group; |
| 512 | } |
| 513 | |
| 514 | /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the |
| 515 | character C. If no font is found, return Qnil if there's a |
| 516 | possibility that the default fontset or the fallback font groups |
| 517 | have a proper font, and return Qt if not. |
| 518 | |
| 519 | If a font is found but is not yet opened, open it (if FACE is not |
| 520 | NULL) or return Qnil (if FACE is NULL). |
| 521 | |
| 522 | ID is a charset-id that must be preferred, or -1 meaning no |
| 523 | preference. |
| 524 | |
| 525 | If FALLBACK is nonzero, search only fallback fonts. */ |
| 526 | |
| 527 | static Lisp_Object |
| 528 | fontset_find_font (Lisp_Object fontset, int c, struct face *face, int id, int fallback) |
| 529 | { |
| 530 | Lisp_Object vec, font_group; |
| 531 | int i, charset_matched = 0, found_index; |
| 532 | FRAME_PTR f = (FRAMEP (FONTSET_FRAME (fontset)) |
| 533 | ? XFRAME (FONTSET_FRAME (fontset)) : XFRAME (selected_frame)); |
| 534 | Lisp_Object rfont_def; |
| 535 | |
| 536 | font_group = fontset_get_font_group (fontset, fallback ? -1 : c); |
| 537 | if (! CONSP (font_group)) |
| 538 | return font_group; |
| 539 | vec = XCDR (font_group); |
| 540 | if (ASIZE (vec) == 0) |
| 541 | return Qnil; |
| 542 | |
| 543 | if (ASIZE (vec) > 1) |
| 544 | { |
| 545 | if (XINT (XCAR (font_group)) != charset_ordered_list_tick) |
| 546 | /* We have just created the font-group, |
| 547 | or the charset priorities were changed. */ |
| 548 | reorder_font_vector (font_group, face->ascii_face->font); |
| 549 | if (id >= 0) |
| 550 | /* Find a spec matching with the charset ID to try at |
| 551 | first. */ |
| 552 | for (i = 0; i < ASIZE (vec); i++) |
| 553 | { |
| 554 | Lisp_Object repertory; |
| 555 | |
| 556 | rfont_def = AREF (vec, i); |
| 557 | if (NILP (rfont_def)) |
| 558 | break; |
| 559 | repertory = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def)); |
| 560 | |
| 561 | if (XINT (repertory) == id) |
| 562 | { |
| 563 | charset_matched = i; |
| 564 | break; |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | /* Find the first available font in the vector of RFONT-DEF. */ |
| 570 | for (i = 0; i < ASIZE (vec); i++) |
| 571 | { |
| 572 | Lisp_Object font_def; |
| 573 | Lisp_Object font_entity, font_object; |
| 574 | |
| 575 | found_index = i; |
| 576 | if (i == 0) |
| 577 | { |
| 578 | if (charset_matched > 0) |
| 579 | { |
| 580 | /* Try the element matching with the charset ID at first. */ |
| 581 | found_index = charset_matched; |
| 582 | /* Make this negative so that we don't come here in the |
| 583 | next loop. */ |
| 584 | charset_matched = - charset_matched; |
| 585 | /* We must try the first element in the next loop. */ |
| 586 | i--; |
| 587 | } |
| 588 | } |
| 589 | else if (i == - charset_matched) |
| 590 | { |
| 591 | /* We have already tried this element and the followings |
| 592 | that have the same font specifications in the first |
| 593 | iteration. So, skip them all. */ |
| 594 | rfont_def = AREF (vec, i); |
| 595 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 596 | for (; i + 1 < ASIZE (vec); i++) |
| 597 | { |
| 598 | rfont_def = AREF (vec, i + 1); |
| 599 | if (NILP (rfont_def)) |
| 600 | break; |
| 601 | if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def)) |
| 602 | break; |
| 603 | } |
| 604 | continue; |
| 605 | } |
| 606 | |
| 607 | rfont_def = AREF (vec, found_index); |
| 608 | if (NILP (rfont_def)) |
| 609 | { |
| 610 | if (i < 0) |
| 611 | continue; |
| 612 | /* This is a sign of not to try the other fonts. */ |
| 613 | return Qt; |
| 614 | } |
| 615 | if (INTEGERP (RFONT_DEF_FACE (rfont_def)) |
| 616 | && XINT (RFONT_DEF_FACE (rfont_def)) < 0) |
| 617 | /* We couldn't open this font last time. */ |
| 618 | continue; |
| 619 | |
| 620 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 621 | if (NILP (font_object)) |
| 622 | { |
| 623 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 624 | |
| 625 | if (! face) |
| 626 | /* We have not yet opened the font. */ |
| 627 | return Qnil; |
| 628 | /* Find a font best-matching with the spec without checking |
| 629 | the support of the character C. That checking is costly, |
| 630 | and even without the checking, the found font supports C |
| 631 | in high possibility. */ |
| 632 | font_entity = font_find_for_lface (f, face->lface, |
| 633 | FONT_DEF_SPEC (font_def), -1); |
| 634 | if (NILP (font_entity)) |
| 635 | { |
| 636 | /* Record that no font matches the spec. */ |
| 637 | RFONT_DEF_SET_FACE (rfont_def, -1); |
| 638 | continue; |
| 639 | } |
| 640 | font_object = font_open_for_lface (f, font_entity, face->lface, |
| 641 | FONT_DEF_SPEC (font_def)); |
| 642 | if (NILP (font_object)) |
| 643 | { |
| 644 | /* Something strange happened, perhaps because of a |
| 645 | Font-backend problem. Too avoid crashing, record |
| 646 | that this spec is unsable. It may be better to find |
| 647 | another font of the same spec, but currently we don't |
| 648 | have such an API. */ |
| 649 | RFONT_DEF_SET_FACE (rfont_def, -1); |
| 650 | continue; |
| 651 | } |
| 652 | RFONT_DEF_SET_OBJECT (rfont_def, font_object); |
| 653 | } |
| 654 | |
| 655 | if (font_has_char (f, font_object, c)) |
| 656 | goto found; |
| 657 | |
| 658 | /* Find a font already opened, maching with the current spec, |
| 659 | and supporting C. */ |
| 660 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 661 | for (; found_index + 1 < ASIZE (vec); found_index++) |
| 662 | { |
| 663 | rfont_def = AREF (vec, found_index + 1); |
| 664 | if (NILP (rfont_def)) |
| 665 | break; |
| 666 | if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def)) |
| 667 | break; |
| 668 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 669 | if (! NILP (font_object) && font_has_char (f, font_object, c)) |
| 670 | { |
| 671 | found_index++; |
| 672 | goto found; |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | /* Find a font-entity with the current spec and supporting C. */ |
| 677 | font_entity = font_find_for_lface (f, face->lface, |
| 678 | FONT_DEF_SPEC (font_def), c); |
| 679 | if (! NILP (font_entity)) |
| 680 | { |
| 681 | /* We found a font. Open it and insert a new element for |
| 682 | that font in VEC. */ |
| 683 | Lisp_Object new_vec; |
| 684 | int j; |
| 685 | |
| 686 | font_object = font_open_for_lface (f, font_entity, face->lface, |
| 687 | Qnil); |
| 688 | if (NILP (font_object)) |
| 689 | continue; |
| 690 | RFONT_DEF_NEW (rfont_def, font_def); |
| 691 | RFONT_DEF_SET_OBJECT (rfont_def, font_object); |
| 692 | RFONT_DEF_SET_SCORE (rfont_def, RFONT_DEF_SCORE (rfont_def)); |
| 693 | new_vec = Fmake_vector (make_number (ASIZE (vec) + 1), Qnil); |
| 694 | found_index++; |
| 695 | for (j = 0; j < found_index; j++) |
| 696 | ASET (new_vec, j, AREF (vec, j)); |
| 697 | ASET (new_vec, j, rfont_def); |
| 698 | for (j++; j < ASIZE (new_vec); j++) |
| 699 | ASET (new_vec, j, AREF (vec, j - 1)); |
| 700 | XSETCDR (font_group, new_vec); |
| 701 | vec = new_vec; |
| 702 | goto found; |
| 703 | } |
| 704 | if (i >= 0) |
| 705 | i = found_index; |
| 706 | } |
| 707 | |
| 708 | FONTSET_SET (fontset, make_number (c), make_number (0)); |
| 709 | return Qnil; |
| 710 | |
| 711 | found: |
| 712 | if (fallback && found_index > 0) |
| 713 | { |
| 714 | /* The order of fonts in the fallback font-group is not that |
| 715 | important, and it is better to move the found font to the |
| 716 | first of the group so that the next try will find it |
| 717 | quickly. */ |
| 718 | for (i = found_index; i > 0; i--) |
| 719 | ASET (vec, i, AREF (vec, i - 1)); |
| 720 | ASET (vec, 0, rfont_def); |
| 721 | } |
| 722 | return rfont_def; |
| 723 | } |
| 724 | |
| 725 | |
| 726 | static Lisp_Object |
| 727 | fontset_font (Lisp_Object fontset, int c, struct face *face, int id) |
| 728 | { |
| 729 | Lisp_Object rfont_def, default_rfont_def; |
| 730 | Lisp_Object base_fontset; |
| 731 | |
| 732 | /* Try a font-group of FONTSET. */ |
| 733 | FONT_DEFERRED_LOG ("current fontset: font for", make_number (c), Qnil); |
| 734 | rfont_def = fontset_find_font (fontset, c, face, id, 0); |
| 735 | if (VECTORP (rfont_def)) |
| 736 | return rfont_def; |
| 737 | if (NILP (rfont_def)) |
| 738 | FONTSET_SET (fontset, make_number (c), make_number (0)); |
| 739 | |
| 740 | /* Try a font-group of the default fontset. */ |
| 741 | base_fontset = FONTSET_BASE (fontset); |
| 742 | if (! EQ (base_fontset, Vdefault_fontset)) |
| 743 | { |
| 744 | if (NILP (FONTSET_DEFAULT (fontset))) |
| 745 | FONTSET_DEFAULT (fontset) |
| 746 | = make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset); |
| 747 | FONT_DEFERRED_LOG ("default fontset: font for", make_number (c), Qnil); |
| 748 | default_rfont_def |
| 749 | = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 0); |
| 750 | if (VECTORP (default_rfont_def)) |
| 751 | return default_rfont_def; |
| 752 | if (NILP (default_rfont_def)) |
| 753 | FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c), |
| 754 | make_number (0)); |
| 755 | } |
| 756 | |
| 757 | /* Try a fallback font-group of FONTSET. */ |
| 758 | if (! EQ (rfont_def, Qt)) |
| 759 | { |
| 760 | FONT_DEFERRED_LOG ("current fallback: font for", make_number (c), Qnil); |
| 761 | rfont_def = fontset_find_font (fontset, c, face, id, 1); |
| 762 | if (VECTORP (rfont_def)) |
| 763 | return rfont_def; |
| 764 | /* Remember that FONTSET has no font for C. */ |
| 765 | FONTSET_SET (fontset, make_number (c), Qt); |
| 766 | } |
| 767 | |
| 768 | /* Try a fallback font-group of the default fontset. */ |
| 769 | if (! EQ (base_fontset, Vdefault_fontset) |
| 770 | && ! EQ (default_rfont_def, Qt)) |
| 771 | { |
| 772 | FONT_DEFERRED_LOG ("default fallback: font for", make_number (c), Qnil); |
| 773 | rfont_def = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 1); |
| 774 | if (VECTORP (rfont_def)) |
| 775 | return rfont_def; |
| 776 | /* Remember that the default fontset has no font for C. */ |
| 777 | FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c), Qt); |
| 778 | } |
| 779 | |
| 780 | return Qnil; |
| 781 | } |
| 782 | |
| 783 | /* Return a newly created fontset with NAME. If BASE is nil, make a |
| 784 | base fontset. Otherwise make a realized fontset whose base is |
| 785 | BASE. */ |
| 786 | |
| 787 | static Lisp_Object |
| 788 | make_fontset (Lisp_Object frame, Lisp_Object name, Lisp_Object base) |
| 789 | { |
| 790 | Lisp_Object fontset; |
| 791 | int size = ASIZE (Vfontset_table); |
| 792 | int id = next_fontset_id; |
| 793 | |
| 794 | /* Find a free slot in Vfontset_table. Usually, next_fontset_id is |
| 795 | the next available fontset ID. So it is expected that this loop |
| 796 | terminates quickly. In addition, as the last element of |
| 797 | Vfontset_table is always nil, we don't have to check the range of |
| 798 | id. */ |
| 799 | while (!NILP (AREF (Vfontset_table, id))) id++; |
| 800 | |
| 801 | if (id + 1 == size) |
| 802 | Vfontset_table = larger_vector (Vfontset_table, size + 32, Qnil); |
| 803 | |
| 804 | fontset = Fmake_char_table (Qfontset, Qnil); |
| 805 | |
| 806 | FONTSET_ID (fontset) = make_number (id); |
| 807 | if (NILP (base)) |
| 808 | { |
| 809 | FONTSET_NAME (fontset) = name; |
| 810 | } |
| 811 | else |
| 812 | { |
| 813 | FONTSET_NAME (fontset) = Qnil; |
| 814 | FONTSET_FRAME (fontset) = frame; |
| 815 | FONTSET_BASE (fontset) = base; |
| 816 | } |
| 817 | |
| 818 | ASET (Vfontset_table, id, fontset); |
| 819 | next_fontset_id = id + 1; |
| 820 | return fontset; |
| 821 | } |
| 822 | |
| 823 | \f |
| 824 | /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/ |
| 825 | |
| 826 | /* Return the name of the fontset who has ID. */ |
| 827 | |
| 828 | Lisp_Object |
| 829 | fontset_name (int id) |
| 830 | { |
| 831 | Lisp_Object fontset; |
| 832 | |
| 833 | fontset = FONTSET_FROM_ID (id); |
| 834 | return FONTSET_NAME (fontset); |
| 835 | } |
| 836 | |
| 837 | |
| 838 | /* Return the ASCII font name of the fontset who has ID. */ |
| 839 | |
| 840 | Lisp_Object |
| 841 | fontset_ascii (int id) |
| 842 | { |
| 843 | Lisp_Object fontset, elt; |
| 844 | |
| 845 | fontset= FONTSET_FROM_ID (id); |
| 846 | elt = FONTSET_ASCII (fontset); |
| 847 | if (CONSP (elt)) |
| 848 | elt = XCAR (elt); |
| 849 | return elt; |
| 850 | } |
| 851 | |
| 852 | void |
| 853 | free_realized_fontset (FRAME_PTR f, Lisp_Object fontset) |
| 854 | { |
| 855 | Lisp_Object tail; |
| 856 | |
| 857 | return; |
| 858 | for (tail = FONTSET_OBJLIST (fontset); CONSP (tail); tail = XCDR (tail)) |
| 859 | { |
| 860 | xassert (FONT_OBJECT_P (XCAR (tail))); |
| 861 | font_close_object (f, XCAR (tail)); |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | /* Free fontset of FACE defined on frame F. Called from |
| 866 | free_realized_face. */ |
| 867 | |
| 868 | void |
| 869 | free_face_fontset (FRAME_PTR f, struct face *face) |
| 870 | { |
| 871 | Lisp_Object fontset; |
| 872 | |
| 873 | fontset = FONTSET_FROM_ID (face->fontset); |
| 874 | if (NILP (fontset)) |
| 875 | return; |
| 876 | xassert (! BASE_FONTSET_P (fontset)); |
| 877 | xassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 878 | free_realized_fontset (f, fontset); |
| 879 | ASET (Vfontset_table, face->fontset, Qnil); |
| 880 | if (face->fontset < next_fontset_id) |
| 881 | next_fontset_id = face->fontset; |
| 882 | if (! NILP (FONTSET_DEFAULT (fontset))) |
| 883 | { |
| 884 | int id = XINT (FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 885 | |
| 886 | fontset = AREF (Vfontset_table, id); |
| 887 | xassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset)); |
| 888 | xassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 889 | free_realized_fontset (f, fontset); |
| 890 | ASET (Vfontset_table, id, Qnil); |
| 891 | if (id < next_fontset_id) |
| 892 | next_fontset_id = face->fontset; |
| 893 | } |
| 894 | face->fontset = -1; |
| 895 | } |
| 896 | |
| 897 | |
| 898 | /* Return 1 if FACE is suitable for displaying character C. |
| 899 | Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P |
| 900 | when C is not an ASCII character. */ |
| 901 | |
| 902 | int |
| 903 | face_suitable_for_char_p (struct face *face, int c) |
| 904 | { |
| 905 | Lisp_Object fontset, rfont_def; |
| 906 | |
| 907 | fontset = FONTSET_FROM_ID (face->fontset); |
| 908 | rfont_def = fontset_font (fontset, c, NULL, -1); |
| 909 | return (VECTORP (rfont_def) |
| 910 | && INTEGERP (RFONT_DEF_FACE (rfont_def)) |
| 911 | && face->id == XINT (RFONT_DEF_FACE (rfont_def))); |
| 912 | } |
| 913 | |
| 914 | |
| 915 | /* Return ID of face suitable for displaying character C on frame F. |
| 916 | FACE must be reazlied for ASCII characters in advance. Called from |
| 917 | the macro FACE_FOR_CHAR. */ |
| 918 | |
| 919 | int |
| 920 | face_for_char (FRAME_PTR f, struct face *face, int c, int pos, Lisp_Object object) |
| 921 | { |
| 922 | Lisp_Object fontset, rfont_def, charset; |
| 923 | int face_id; |
| 924 | int id; |
| 925 | |
| 926 | /* If face->fontset is negative (that happens when no font is found |
| 927 | for face), just return face->ascii_face because we can't do |
| 928 | anything. Perhaps, we should fix the callers to assure |
| 929 | that face->fontset is always valid. */ |
| 930 | if (ASCII_CHAR_P (c) || face->fontset < 0) |
| 931 | return face->ascii_face->id; |
| 932 | |
| 933 | xassert (fontset_id_valid_p (face->fontset)); |
| 934 | fontset = FONTSET_FROM_ID (face->fontset); |
| 935 | xassert (!BASE_FONTSET_P (fontset)); |
| 936 | |
| 937 | if (pos < 0) |
| 938 | { |
| 939 | id = -1; |
| 940 | charset = Qnil; |
| 941 | } |
| 942 | else |
| 943 | { |
| 944 | charset = Fget_char_property (make_number (pos), Qcharset, object); |
| 945 | if (CHARSETP (charset)) |
| 946 | { |
| 947 | Lisp_Object val; |
| 948 | |
| 949 | val = assq_no_quit (charset, Vfont_encoding_charset_alist); |
| 950 | if (CONSP (val) && CHARSETP (XCDR (val))) |
| 951 | charset = XCDR (val); |
| 952 | id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 953 | } |
| 954 | else |
| 955 | id = -1; |
| 956 | } |
| 957 | |
| 958 | rfont_def = fontset_font (fontset, c, face, id); |
| 959 | if (VECTORP (rfont_def)) |
| 960 | { |
| 961 | if (INTEGERP (RFONT_DEF_FACE (rfont_def))) |
| 962 | face_id = XINT (RFONT_DEF_FACE (rfont_def)); |
| 963 | else |
| 964 | { |
| 965 | Lisp_Object font_object; |
| 966 | |
| 967 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 968 | face_id = face_for_font (f, font_object, face); |
| 969 | RFONT_DEF_SET_FACE (rfont_def, face_id); |
| 970 | } |
| 971 | } |
| 972 | else |
| 973 | { |
| 974 | if (INTEGERP (FONTSET_NOFONT_FACE (fontset))) |
| 975 | face_id = XINT (FONTSET_NOFONT_FACE (fontset)); |
| 976 | else |
| 977 | { |
| 978 | face_id = face_for_font (f, Qnil, face); |
| 979 | FONTSET_NOFONT_FACE (fontset) = make_number (face_id); |
| 980 | } |
| 981 | } |
| 982 | xassert (face_id >= 0); |
| 983 | return face_id; |
| 984 | } |
| 985 | |
| 986 | |
| 987 | Lisp_Object |
| 988 | font_for_char (struct face *face, int c, int pos, Lisp_Object object) |
| 989 | { |
| 990 | Lisp_Object fontset, rfont_def, charset; |
| 991 | int id; |
| 992 | |
| 993 | if (ASCII_CHAR_P (c)) |
| 994 | { |
| 995 | Lisp_Object font_object; |
| 996 | |
| 997 | XSETFONT (font_object, face->ascii_face->font); |
| 998 | return font_object; |
| 999 | } |
| 1000 | |
| 1001 | xassert (fontset_id_valid_p (face->fontset)); |
| 1002 | fontset = FONTSET_FROM_ID (face->fontset); |
| 1003 | xassert (!BASE_FONTSET_P (fontset)); |
| 1004 | if (pos < 0) |
| 1005 | { |
| 1006 | id = -1; |
| 1007 | charset = Qnil; |
| 1008 | } |
| 1009 | else |
| 1010 | { |
| 1011 | charset = Fget_char_property (make_number (pos), Qcharset, object); |
| 1012 | if (CHARSETP (charset)) |
| 1013 | { |
| 1014 | Lisp_Object val; |
| 1015 | |
| 1016 | val = assq_no_quit (charset, Vfont_encoding_charset_alist); |
| 1017 | if (CONSP (val) && CHARSETP (XCDR (val))) |
| 1018 | charset = XCDR (val); |
| 1019 | id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 1020 | } |
| 1021 | else |
| 1022 | id = -1; |
| 1023 | } |
| 1024 | |
| 1025 | rfont_def = fontset_font (fontset, c, face, id); |
| 1026 | return (VECTORP (rfont_def) |
| 1027 | ? RFONT_DEF_OBJECT (rfont_def) |
| 1028 | : Qnil); |
| 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | /* Make a realized fontset for ASCII face FACE on frame F from the |
| 1033 | base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the |
| 1034 | default fontset as the base. Value is the id of the new fontset. |
| 1035 | Called from realize_x_face. */ |
| 1036 | |
| 1037 | int |
| 1038 | make_fontset_for_ascii_face (FRAME_PTR f, int base_fontset_id, struct face *face) |
| 1039 | { |
| 1040 | Lisp_Object base_fontset, fontset, frame; |
| 1041 | |
| 1042 | XSETFRAME (frame, f); |
| 1043 | if (base_fontset_id >= 0) |
| 1044 | { |
| 1045 | base_fontset = FONTSET_FROM_ID (base_fontset_id); |
| 1046 | if (!BASE_FONTSET_P (base_fontset)) |
| 1047 | base_fontset = FONTSET_BASE (base_fontset); |
| 1048 | if (! BASE_FONTSET_P (base_fontset)) |
| 1049 | abort (); |
| 1050 | } |
| 1051 | else |
| 1052 | base_fontset = Vdefault_fontset; |
| 1053 | |
| 1054 | fontset = make_fontset (frame, Qnil, base_fontset); |
| 1055 | return XINT (FONTSET_ID (fontset)); |
| 1056 | } |
| 1057 | |
| 1058 | \f |
| 1059 | |
| 1060 | /* Cache data used by fontset_pattern_regexp. The car part is a |
| 1061 | pattern string containing at least one wild card, the cdr part is |
| 1062 | the corresponding regular expression. */ |
| 1063 | static Lisp_Object Vcached_fontset_data; |
| 1064 | |
| 1065 | #define CACHED_FONTSET_NAME ((char *) SDATA (XCAR (Vcached_fontset_data))) |
| 1066 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) |
| 1067 | |
| 1068 | /* If fontset name PATTERN contains any wild card, return regular |
| 1069 | expression corresponding to PATTERN. */ |
| 1070 | |
| 1071 | static Lisp_Object |
| 1072 | fontset_pattern_regexp (Lisp_Object pattern) |
| 1073 | { |
| 1074 | if (!strchr ((char *) SDATA (pattern), '*') |
| 1075 | && !strchr ((char *) SDATA (pattern), '?')) |
| 1076 | /* PATTERN does not contain any wild cards. */ |
| 1077 | return Qnil; |
| 1078 | |
| 1079 | if (!CONSP (Vcached_fontset_data) |
| 1080 | || strcmp ((char *) SDATA (pattern), CACHED_FONTSET_NAME)) |
| 1081 | { |
| 1082 | /* We must at first update the cached data. */ |
| 1083 | unsigned char *regex, *p0, *p1; |
| 1084 | int ndashes = 0, nstars = 0, nescs = 0; |
| 1085 | |
| 1086 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1087 | { |
| 1088 | if (*p0 == '-') |
| 1089 | ndashes++; |
| 1090 | else if (*p0 == '*') |
| 1091 | nstars++; |
| 1092 | else if (*p0 == '[' |
| 1093 | || *p0 == '.' || *p0 == '\\' |
| 1094 | || *p0 == '+' || *p0 == '^' |
| 1095 | || *p0 == '$') |
| 1096 | nescs++; |
| 1097 | } |
| 1098 | |
| 1099 | /* If PATTERN is not full XLFD we conert "*" to ".*". Otherwise |
| 1100 | we convert "*" to "[^-]*" which is much faster in regular |
| 1101 | expression matching. */ |
| 1102 | if (ndashes < 14) |
| 1103 | p1 = regex = (unsigned char *) alloca (SBYTES (pattern) + 2 * nstars + 2 * nescs + 1); |
| 1104 | else |
| 1105 | p1 = regex = (unsigned char *) alloca (SBYTES (pattern) + 5 * nstars + 2 * nescs + 1); |
| 1106 | |
| 1107 | *p1++ = '^'; |
| 1108 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1109 | { |
| 1110 | if (*p0 == '*') |
| 1111 | { |
| 1112 | if (ndashes < 14) |
| 1113 | *p1++ = '.'; |
| 1114 | else |
| 1115 | *p1++ = '[', *p1++ = '^', *p1++ = '-', *p1++ = ']'; |
| 1116 | *p1++ = '*'; |
| 1117 | } |
| 1118 | else if (*p0 == '?') |
| 1119 | *p1++ = '.'; |
| 1120 | else if (*p0 == '[' |
| 1121 | || *p0 == '.' || *p0 == '\\' |
| 1122 | || *p0 == '+' || *p0 == '^' |
| 1123 | || *p0 == '$') |
| 1124 | *p1++ = '\\', *p1++ = *p0; |
| 1125 | else |
| 1126 | *p1++ = *p0; |
| 1127 | } |
| 1128 | *p1++ = '$'; |
| 1129 | *p1++ = 0; |
| 1130 | |
| 1131 | Vcached_fontset_data = Fcons (build_string ((char *) SDATA (pattern)), |
| 1132 | build_string ((char *) regex)); |
| 1133 | } |
| 1134 | |
| 1135 | return CACHED_FONTSET_REGEX; |
| 1136 | } |
| 1137 | |
| 1138 | /* Return ID of the base fontset named NAME. If there's no such |
| 1139 | fontset, return -1. NAME_PATTERN specifies how to treat NAME as this: |
| 1140 | 0: pattern containing '*' and '?' as wildcards |
| 1141 | 1: regular expression |
| 1142 | 2: literal fontset name |
| 1143 | */ |
| 1144 | |
| 1145 | int |
| 1146 | fs_query_fontset (Lisp_Object name, int name_pattern) |
| 1147 | { |
| 1148 | Lisp_Object tem; |
| 1149 | int i; |
| 1150 | |
| 1151 | name = Fdowncase (name); |
| 1152 | if (name_pattern != 1) |
| 1153 | { |
| 1154 | tem = Frassoc (name, Vfontset_alias_alist); |
| 1155 | if (NILP (tem)) |
| 1156 | tem = Fassoc (name, Vfontset_alias_alist); |
| 1157 | if (CONSP (tem) && STRINGP (XCAR (tem))) |
| 1158 | name = XCAR (tem); |
| 1159 | else if (name_pattern == 0) |
| 1160 | { |
| 1161 | tem = fontset_pattern_regexp (name); |
| 1162 | if (STRINGP (tem)) |
| 1163 | { |
| 1164 | name = tem; |
| 1165 | name_pattern = 1; |
| 1166 | } |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 1171 | { |
| 1172 | Lisp_Object fontset, this_name; |
| 1173 | |
| 1174 | fontset = FONTSET_FROM_ID (i); |
| 1175 | if (NILP (fontset) |
| 1176 | || !BASE_FONTSET_P (fontset)) |
| 1177 | continue; |
| 1178 | |
| 1179 | this_name = FONTSET_NAME (fontset); |
| 1180 | if (name_pattern == 1 |
| 1181 | ? fast_string_match_ignore_case (name, this_name) >= 0 |
| 1182 | : !xstrcasecmp (SDATA (name), SDATA (this_name))) |
| 1183 | return i; |
| 1184 | } |
| 1185 | return -1; |
| 1186 | } |
| 1187 | |
| 1188 | |
| 1189 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
| 1190 | doc: /* Return the name of a fontset that matches PATTERN. |
| 1191 | The value is nil if there is no matching fontset. |
| 1192 | PATTERN can contain `*' or `?' as a wildcard |
| 1193 | just as X font name matching algorithm allows. |
| 1194 | If REGEXPP is non-nil, PATTERN is a regular expression. */) |
| 1195 | (Lisp_Object pattern, Lisp_Object regexpp) |
| 1196 | { |
| 1197 | Lisp_Object fontset; |
| 1198 | int id; |
| 1199 | |
| 1200 | (*check_window_system_func) (); |
| 1201 | |
| 1202 | CHECK_STRING (pattern); |
| 1203 | |
| 1204 | if (SCHARS (pattern) == 0) |
| 1205 | return Qnil; |
| 1206 | |
| 1207 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
| 1208 | if (id < 0) |
| 1209 | return Qnil; |
| 1210 | |
| 1211 | fontset = FONTSET_FROM_ID (id); |
| 1212 | return FONTSET_NAME (fontset); |
| 1213 | } |
| 1214 | |
| 1215 | /* Return a list of base fontset names matching PATTERN on frame F. */ |
| 1216 | |
| 1217 | Lisp_Object |
| 1218 | list_fontsets (FRAME_PTR f, Lisp_Object pattern, int size) |
| 1219 | { |
| 1220 | Lisp_Object frame, regexp, val; |
| 1221 | int id; |
| 1222 | |
| 1223 | XSETFRAME (frame, f); |
| 1224 | |
| 1225 | regexp = fontset_pattern_regexp (pattern); |
| 1226 | val = Qnil; |
| 1227 | |
| 1228 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1229 | { |
| 1230 | Lisp_Object fontset, name; |
| 1231 | |
| 1232 | fontset = FONTSET_FROM_ID (id); |
| 1233 | if (NILP (fontset) |
| 1234 | || !BASE_FONTSET_P (fontset) |
| 1235 | || !EQ (frame, FONTSET_FRAME (fontset))) |
| 1236 | continue; |
| 1237 | name = FONTSET_NAME (fontset); |
| 1238 | |
| 1239 | if (STRINGP (regexp) |
| 1240 | ? (fast_string_match (regexp, name) < 0) |
| 1241 | : strcmp ((char *) SDATA (pattern), (char *) SDATA (name))) |
| 1242 | continue; |
| 1243 | |
| 1244 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
| 1245 | } |
| 1246 | |
| 1247 | return val; |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | /* Free all realized fontsets whose base fontset is BASE. */ |
| 1252 | |
| 1253 | static void |
| 1254 | free_realized_fontsets (Lisp_Object base) |
| 1255 | { |
| 1256 | int id; |
| 1257 | |
| 1258 | #if 0 |
| 1259 | /* For the moment, this doesn't work because free_realized_face |
| 1260 | doesn't remove FACE from a cache. Until we find a solution, we |
| 1261 | suppress this code, and simply use Fclear_face_cache even though |
| 1262 | that is not efficient. */ |
| 1263 | BLOCK_INPUT; |
| 1264 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1265 | { |
| 1266 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1267 | |
| 1268 | if (EQ (FONTSET_BASE (this), base)) |
| 1269 | { |
| 1270 | Lisp_Object tail; |
| 1271 | |
| 1272 | for (tail = FONTSET_FACE_ALIST (this); CONSP (tail); |
| 1273 | tail = XCDR (tail)) |
| 1274 | { |
| 1275 | FRAME_PTR f = XFRAME (FONTSET_FRAME (this)); |
| 1276 | int face_id = XINT (XCDR (XCAR (tail))); |
| 1277 | struct face *face = FACE_FROM_ID (f, face_id); |
| 1278 | |
| 1279 | /* Face THIS itself is also freed by the following call. */ |
| 1280 | free_realized_face (f, face); |
| 1281 | } |
| 1282 | } |
| 1283 | } |
| 1284 | UNBLOCK_INPUT; |
| 1285 | #else /* not 0 */ |
| 1286 | /* But, we don't have to call Fclear_face_cache if no fontset has |
| 1287 | been realized from BASE. */ |
| 1288 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1289 | { |
| 1290 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1291 | |
| 1292 | if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base)) |
| 1293 | { |
| 1294 | Fclear_face_cache (Qt); |
| 1295 | break; |
| 1296 | } |
| 1297 | } |
| 1298 | #endif /* not 0 */ |
| 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | /* Check validity of NAME as a fontset name and return the |
| 1303 | corresponding fontset. If not valid, signal an error. |
| 1304 | |
| 1305 | If NAME is t, return Vdefault_fontset. If NAME is nil, return the |
| 1306 | fontset of *FRAME. |
| 1307 | |
| 1308 | Set *FRAME to the actual frame. */ |
| 1309 | |
| 1310 | static Lisp_Object |
| 1311 | check_fontset_name (Lisp_Object name, Lisp_Object *frame) |
| 1312 | { |
| 1313 | int id; |
| 1314 | |
| 1315 | if (NILP (*frame)) |
| 1316 | *frame = selected_frame; |
| 1317 | CHECK_LIVE_FRAME (*frame); |
| 1318 | |
| 1319 | if (EQ (name, Qt)) |
| 1320 | return Vdefault_fontset; |
| 1321 | if (NILP (name)) |
| 1322 | { |
| 1323 | id = FRAME_FONTSET (XFRAME (*frame)); |
| 1324 | } |
| 1325 | else |
| 1326 | { |
| 1327 | CHECK_STRING (name); |
| 1328 | /* First try NAME as literal. */ |
| 1329 | id = fs_query_fontset (name, 2); |
| 1330 | if (id < 0) |
| 1331 | /* For backward compatibility, try again NAME as pattern. */ |
| 1332 | id = fs_query_fontset (name, 0); |
| 1333 | if (id < 0) |
| 1334 | error ("Fontset `%s' does not exist", SDATA (name)); |
| 1335 | } |
| 1336 | return FONTSET_FROM_ID (id); |
| 1337 | } |
| 1338 | |
| 1339 | static void |
| 1340 | accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val) |
| 1341 | { |
| 1342 | if (EQ (XCAR (arg), val)) |
| 1343 | { |
| 1344 | if (CONSP (range)) |
| 1345 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); |
| 1346 | else |
| 1347 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | |
| 1352 | /* Callback function for map_charset_chars in Fset_fontset_font. |
| 1353 | ARG is a vector [ FONTSET FONT_DEF ADD ASCII SCRIPT_RANGE_LIST ]. |
| 1354 | |
| 1355 | In FONTSET, set FONT_DEF in a fashion specified by ADD for |
| 1356 | characters in RANGE and ranges in SCRIPT_RANGE_LIST before RANGE. |
| 1357 | The consumed ranges are poped up from SCRIPT_RANGE_LIST, and the |
| 1358 | new SCRIPT_RANGE_LIST is stored in ARG. |
| 1359 | |
| 1360 | If ASCII is nil, don't set FONT_DEF for ASCII characters. It is |
| 1361 | assured that SCRIPT_RANGE_LIST doesn't contain ASCII in that |
| 1362 | case. */ |
| 1363 | |
| 1364 | static void |
| 1365 | set_fontset_font (Lisp_Object arg, Lisp_Object range) |
| 1366 | { |
| 1367 | Lisp_Object fontset, font_def, add, ascii, script_range_list; |
| 1368 | int from = XINT (XCAR (range)), to = XINT (XCDR (range)); |
| 1369 | |
| 1370 | fontset = AREF (arg, 0); |
| 1371 | font_def = AREF (arg, 1); |
| 1372 | add = AREF (arg, 2); |
| 1373 | ascii = AREF (arg, 3); |
| 1374 | script_range_list = AREF (arg, 4); |
| 1375 | |
| 1376 | if (NILP (ascii) && from < 0x80) |
| 1377 | { |
| 1378 | if (to < 0x80) |
| 1379 | return; |
| 1380 | from = 0x80; |
| 1381 | range = Fcons (make_number (0x80), XCDR (range)); |
| 1382 | } |
| 1383 | |
| 1384 | #define SCRIPT_FROM XINT (XCAR (XCAR (script_range_list))) |
| 1385 | #define SCRIPT_TO XINT (XCDR (XCAR (script_range_list))) |
| 1386 | #define POP_SCRIPT_RANGE() script_range_list = XCDR (script_range_list) |
| 1387 | |
| 1388 | for (; CONSP (script_range_list) && SCRIPT_TO < from; POP_SCRIPT_RANGE ()) |
| 1389 | FONTSET_ADD (fontset, XCAR (script_range_list), font_def, add); |
| 1390 | if (CONSP (script_range_list)) |
| 1391 | { |
| 1392 | if (SCRIPT_FROM < from) |
| 1393 | range = Fcons (make_number (SCRIPT_FROM), XCDR (range)); |
| 1394 | while (CONSP (script_range_list) && SCRIPT_TO <= to) |
| 1395 | POP_SCRIPT_RANGE (); |
| 1396 | if (CONSP (script_range_list) && SCRIPT_FROM <= to) |
| 1397 | XSETCAR (XCAR (script_range_list), make_number (to + 1)); |
| 1398 | } |
| 1399 | |
| 1400 | FONTSET_ADD (fontset, range, font_def, add); |
| 1401 | ASET (arg, 4, script_range_list); |
| 1402 | } |
| 1403 | |
| 1404 | static void update_auto_fontset_alist (Lisp_Object, Lisp_Object); |
| 1405 | |
| 1406 | |
| 1407 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 5, 0, |
| 1408 | doc: /* |
| 1409 | Modify fontset NAME to use FONT-SPEC for TARGET characters. |
| 1410 | |
| 1411 | NAME is a fontset name string, nil for the fontset of FRAME, or t for |
| 1412 | the default fontset. |
| 1413 | |
| 1414 | TARGET may be a cons; (FROM . TO), where FROM and TO are characters. |
| 1415 | In that case, use FONT-SPEC for all characters in the range FROM and |
| 1416 | TO (inclusive). |
| 1417 | |
| 1418 | TARGET may be a script name symbol. In that case, use FONT-SPEC for |
| 1419 | all characters that belong to the script. |
| 1420 | |
| 1421 | TARGET may be a charset. In that case, use FONT-SPEC for all |
| 1422 | characters in the charset. |
| 1423 | |
| 1424 | TARGET may be nil. In that case, use FONT-SPEC for any characters for |
| 1425 | that no FONT-SPEC is specified. |
| 1426 | |
| 1427 | FONT-SPEC may one of these: |
| 1428 | * A font-spec object made by the function `font-spec' (which see). |
| 1429 | * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and |
| 1430 | REGISTRY is a font registry name. FAMILY may contain foundry |
| 1431 | name, and REGISTRY may contain encoding name. |
| 1432 | * A font name string. |
| 1433 | * nil, which explicitly specifies that there's no font for TARGET. |
| 1434 | |
| 1435 | Optional 4th argument FRAME is a frame or nil for the selected frame |
| 1436 | that is concerned in the case that NAME is nil. |
| 1437 | |
| 1438 | Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC |
| 1439 | to the font specifications for TARGET previously set. If it is |
| 1440 | `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is |
| 1441 | appended. By default, FONT-SPEC overrides the previous settings. */) |
| 1442 | (Lisp_Object name, Lisp_Object target, Lisp_Object font_spec, Lisp_Object frame, Lisp_Object add) |
| 1443 | { |
| 1444 | Lisp_Object fontset; |
| 1445 | Lisp_Object font_def, registry, family; |
| 1446 | Lisp_Object range_list; |
| 1447 | struct charset *charset = NULL; |
| 1448 | Lisp_Object fontname; |
| 1449 | int ascii_changed = 0; |
| 1450 | |
| 1451 | fontset = check_fontset_name (name, &frame); |
| 1452 | |
| 1453 | fontname = Qnil; |
| 1454 | if (CONSP (font_spec)) |
| 1455 | { |
| 1456 | Lisp_Object spec = Ffont_spec (0, NULL); |
| 1457 | |
| 1458 | font_parse_family_registry (XCAR (font_spec), XCDR (font_spec), spec); |
| 1459 | font_spec = spec; |
| 1460 | fontname = Ffont_xlfd_name (font_spec, Qnil); |
| 1461 | } |
| 1462 | else if (STRINGP (font_spec)) |
| 1463 | { |
| 1464 | Lisp_Object args[2]; |
| 1465 | |
| 1466 | fontname = font_spec; |
| 1467 | args[0] = QCname; |
| 1468 | args[1] = font_spec; |
| 1469 | font_spec = Ffont_spec (2, args); |
| 1470 | } |
| 1471 | else if (FONT_SPEC_P (font_spec)) |
| 1472 | fontname = Ffont_xlfd_name (font_spec, Qnil); |
| 1473 | else if (! NILP (font_spec)) |
| 1474 | Fsignal (Qfont, list2 (build_string ("Invalid font-spec"), font_spec)); |
| 1475 | |
| 1476 | if (! NILP (font_spec)) |
| 1477 | { |
| 1478 | Lisp_Object encoding, repertory; |
| 1479 | |
| 1480 | family = AREF (font_spec, FONT_FAMILY_INDEX); |
| 1481 | if (! NILP (family) ) |
| 1482 | family = SYMBOL_NAME (family); |
| 1483 | registry = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1484 | if (! NILP (registry)) |
| 1485 | registry = Fdowncase (SYMBOL_NAME (registry)); |
| 1486 | encoding = find_font_encoding (concat3 (family, build_string ("-"), |
| 1487 | registry)); |
| 1488 | if (NILP (encoding)) |
| 1489 | encoding = Qascii; |
| 1490 | |
| 1491 | if (SYMBOLP (encoding)) |
| 1492 | { |
| 1493 | CHECK_CHARSET (encoding); |
| 1494 | encoding = repertory = CHARSET_SYMBOL_ID (encoding); |
| 1495 | } |
| 1496 | else |
| 1497 | { |
| 1498 | repertory = XCDR (encoding); |
| 1499 | encoding = XCAR (encoding); |
| 1500 | CHECK_CHARSET (encoding); |
| 1501 | encoding = CHARSET_SYMBOL_ID (encoding); |
| 1502 | if (! NILP (repertory) && SYMBOLP (repertory)) |
| 1503 | { |
| 1504 | CHECK_CHARSET (repertory); |
| 1505 | repertory = CHARSET_SYMBOL_ID (repertory); |
| 1506 | } |
| 1507 | } |
| 1508 | FONT_DEF_NEW (font_def, font_spec, encoding, repertory); |
| 1509 | } |
| 1510 | else |
| 1511 | font_def = Qnil; |
| 1512 | |
| 1513 | if (CHARACTERP (target)) |
| 1514 | { |
| 1515 | if (XFASTINT (target) < 0x80) |
| 1516 | error ("Can't set a font for partial ASCII range"); |
| 1517 | range_list = Fcons (Fcons (target, target), Qnil); |
| 1518 | } |
| 1519 | else if (CONSP (target)) |
| 1520 | { |
| 1521 | Lisp_Object from, to; |
| 1522 | |
| 1523 | from = Fcar (target); |
| 1524 | to = Fcdr (target); |
| 1525 | CHECK_CHARACTER (from); |
| 1526 | CHECK_CHARACTER (to); |
| 1527 | if (XFASTINT (from) < 0x80) |
| 1528 | { |
| 1529 | if (XFASTINT (from) != 0 || XFASTINT (to) < 0x7F) |
| 1530 | error ("Can't set a font for partial ASCII range"); |
| 1531 | ascii_changed = 1; |
| 1532 | } |
| 1533 | range_list = Fcons (target, Qnil); |
| 1534 | } |
| 1535 | else if (SYMBOLP (target) && !NILP (target)) |
| 1536 | { |
| 1537 | Lisp_Object script_list; |
| 1538 | Lisp_Object val; |
| 1539 | |
| 1540 | range_list = Qnil; |
| 1541 | script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; |
| 1542 | if (! NILP (Fmemq (target, script_list))) |
| 1543 | { |
| 1544 | if (EQ (target, Qlatin)) |
| 1545 | ascii_changed = 1; |
| 1546 | val = Fcons (target, Qnil); |
| 1547 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, |
| 1548 | val); |
| 1549 | range_list = Fnreverse (XCDR (val)); |
| 1550 | } |
| 1551 | if (CHARSETP (target)) |
| 1552 | { |
| 1553 | CHECK_CHARSET_GET_CHARSET (target, charset); |
| 1554 | if (charset->ascii_compatible_p) |
| 1555 | ascii_changed = 1; |
| 1556 | } |
| 1557 | else if (NILP (range_list)) |
| 1558 | error ("Invalid script or charset name: %s", |
| 1559 | SDATA (SYMBOL_NAME (target))); |
| 1560 | } |
| 1561 | else if (NILP (target)) |
| 1562 | range_list = Fcons (Qnil, Qnil); |
| 1563 | else |
| 1564 | error ("Invalid target for setting a font"); |
| 1565 | |
| 1566 | if (ascii_changed) |
| 1567 | { |
| 1568 | Lisp_Object val; |
| 1569 | |
| 1570 | if (NILP (font_spec)) |
| 1571 | error ("Can't set ASCII font to nil"); |
| 1572 | val = CHAR_TABLE_REF (fontset, 0); |
| 1573 | if (! NILP (val) && EQ (add, Qappend)) |
| 1574 | /* We are going to change just an additional font for ASCII. */ |
| 1575 | ascii_changed = 0; |
| 1576 | } |
| 1577 | |
| 1578 | if (charset) |
| 1579 | { |
| 1580 | Lisp_Object arg; |
| 1581 | |
| 1582 | arg = Fmake_vector (make_number (5), Qnil); |
| 1583 | ASET (arg, 0, fontset); |
| 1584 | ASET (arg, 1, font_def); |
| 1585 | ASET (arg, 2, add); |
| 1586 | ASET (arg, 3, ascii_changed ? Qt : Qnil); |
| 1587 | ASET (arg, 4, range_list); |
| 1588 | |
| 1589 | map_charset_chars (set_fontset_font, Qnil, arg, charset, |
| 1590 | CHARSET_MIN_CODE (charset), |
| 1591 | CHARSET_MAX_CODE (charset)); |
| 1592 | range_list = AREF (arg, 4); |
| 1593 | } |
| 1594 | for (; CONSP (range_list); range_list = XCDR (range_list)) |
| 1595 | FONTSET_ADD (fontset, XCAR (range_list), font_def, add); |
| 1596 | |
| 1597 | if (ascii_changed) |
| 1598 | { |
| 1599 | Lisp_Object tail, frame, alist; |
| 1600 | int fontset_id = XINT (FONTSET_ID (fontset)); |
| 1601 | |
| 1602 | FONTSET_ASCII (fontset) = fontname; |
| 1603 | name = FONTSET_NAME (fontset); |
| 1604 | FOR_EACH_FRAME (tail, frame) |
| 1605 | { |
| 1606 | FRAME_PTR f = XFRAME (frame); |
| 1607 | Lisp_Object font_object; |
| 1608 | struct face *face; |
| 1609 | |
| 1610 | if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f)) |
| 1611 | continue; |
| 1612 | if (fontset_id != FRAME_FONTSET (f)) |
| 1613 | continue; |
| 1614 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 1615 | if (face) |
| 1616 | font_object = font_load_for_lface (f, face->lface, font_spec); |
| 1617 | else |
| 1618 | font_object = font_open_by_spec (f, font_spec); |
| 1619 | if (! NILP (font_object)) |
| 1620 | { |
| 1621 | update_auto_fontset_alist (font_object, fontset); |
| 1622 | alist = Fcons (Fcons (Qfont, Fcons (name, font_object)), Qnil); |
| 1623 | Fmodify_frame_parameters (frame, alist); |
| 1624 | } |
| 1625 | } |
| 1626 | } |
| 1627 | |
| 1628 | /* Free all realized fontsets whose base is FONTSET. This way, the |
| 1629 | specified character(s) are surely redisplayed by a correct |
| 1630 | font. */ |
| 1631 | free_realized_fontsets (fontset); |
| 1632 | |
| 1633 | return Qnil; |
| 1634 | } |
| 1635 | |
| 1636 | |
| 1637 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, |
| 1638 | doc: /* Create a new fontset NAME from font information in FONTLIST. |
| 1639 | |
| 1640 | FONTLIST is an alist of scripts vs the corresponding font specification list. |
| 1641 | Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a |
| 1642 | character of SCRIPT is displayed by a font that matches one of |
| 1643 | FONT-SPEC. |
| 1644 | |
| 1645 | SCRIPT is a symbol that appears in the first extra slot of the |
| 1646 | char-table `char-script-table'. |
| 1647 | |
| 1648 | FONT-SPEC is a vector, a cons, or a string. See the documentation of |
| 1649 | `set-fontset-font' for the meaning. */) |
| 1650 | (Lisp_Object name, Lisp_Object fontlist) |
| 1651 | { |
| 1652 | Lisp_Object fontset; |
| 1653 | int id; |
| 1654 | |
| 1655 | CHECK_STRING (name); |
| 1656 | CHECK_LIST (fontlist); |
| 1657 | |
| 1658 | name = Fdowncase (name); |
| 1659 | id = fs_query_fontset (name, 0); |
| 1660 | if (id < 0) |
| 1661 | { |
| 1662 | Lisp_Object font_spec = Ffont_spec (0, NULL); |
| 1663 | Lisp_Object short_name; |
| 1664 | char xlfd[256]; |
| 1665 | int len; |
| 1666 | |
| 1667 | if (font_parse_xlfd ((char *) SDATA (name), font_spec) < 0) |
| 1668 | error ("Fontset name must be in XLFD format"); |
| 1669 | short_name = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1670 | if (strncmp ((char *) SDATA (SYMBOL_NAME (short_name)), "fontset-", 8) |
| 1671 | || SBYTES (SYMBOL_NAME (short_name)) < 9) |
| 1672 | error ("Registry field of fontset name must be \"fontset-*\""); |
| 1673 | Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (short_name)), |
| 1674 | Vfontset_alias_alist); |
| 1675 | ASET (font_spec, FONT_REGISTRY_INDEX, Qiso8859_1); |
| 1676 | fontset = make_fontset (Qnil, name, Qnil); |
| 1677 | len = font_unparse_xlfd (font_spec, 0, xlfd, 256); |
| 1678 | if (len < 0) |
| 1679 | error ("Invalid fontset name (perhaps too long): %s", SDATA (name)); |
| 1680 | FONTSET_ASCII (fontset) = make_unibyte_string (xlfd, len); |
| 1681 | } |
| 1682 | else |
| 1683 | { |
| 1684 | fontset = FONTSET_FROM_ID (id); |
| 1685 | free_realized_fontsets (fontset); |
| 1686 | Fset_char_table_range (fontset, Qt, Qnil); |
| 1687 | } |
| 1688 | |
| 1689 | for (; ! NILP (fontlist); fontlist = Fcdr (fontlist)) |
| 1690 | { |
| 1691 | Lisp_Object elt, script; |
| 1692 | |
| 1693 | elt = Fcar (fontlist); |
| 1694 | script = Fcar (elt); |
| 1695 | elt = Fcdr (elt); |
| 1696 | if (CONSP (elt) && (NILP (XCDR (elt)) || CONSP (XCDR (elt)))) |
| 1697 | for (; CONSP (elt); elt = XCDR (elt)) |
| 1698 | Fset_fontset_font (name, script, XCAR (elt), Qnil, Qappend); |
| 1699 | else |
| 1700 | Fset_fontset_font (name, script, elt, Qnil, Qappend); |
| 1701 | } |
| 1702 | return name; |
| 1703 | } |
| 1704 | |
| 1705 | |
| 1706 | /* Alist of automatically created fontsets. Each element is a cons |
| 1707 | (FONT-SPEC . FONTSET-ID). */ |
| 1708 | static Lisp_Object auto_fontset_alist; |
| 1709 | |
| 1710 | /* Number of automatically created fontsets. */ |
| 1711 | static int num_auto_fontsets; |
| 1712 | |
| 1713 | /* Retun a fontset synthesized from FONT-OBJECT. This is called from |
| 1714 | x_new_font when FONT-OBJECT is used for the default ASCII font of a |
| 1715 | frame, and the returned fontset is used for the default fontset of |
| 1716 | that frame. The fontset specifies a font of the same registry as |
| 1717 | FONT-OBJECT for all characters in the repertory of the registry |
| 1718 | (see Vfont_encoding_alist). If the repertory is not known, the |
| 1719 | fontset specifies the font for all Latin characters assuming that a |
| 1720 | user intends to use FONT-OBJECT for Latin characters. */ |
| 1721 | |
| 1722 | int |
| 1723 | fontset_from_font (Lisp_Object font_object) |
| 1724 | { |
| 1725 | Lisp_Object font_name = font_get_name (font_object); |
| 1726 | Lisp_Object font_spec = Fcopy_font_spec (font_object); |
| 1727 | Lisp_Object registry = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1728 | Lisp_Object fontset_spec, alias, name, fontset; |
| 1729 | Lisp_Object val; |
| 1730 | |
| 1731 | val = assoc_no_quit (font_spec, auto_fontset_alist); |
| 1732 | if (CONSP (val)) |
| 1733 | return XINT (FONTSET_ID (XCDR (val))); |
| 1734 | if (num_auto_fontsets++ == 0) |
| 1735 | alias = intern ("fontset-startup"); |
| 1736 | else |
| 1737 | { |
| 1738 | char temp[32]; |
| 1739 | |
| 1740 | sprintf (temp, "fontset-auto%d", num_auto_fontsets - 1); |
| 1741 | alias = intern (temp); |
| 1742 | } |
| 1743 | fontset_spec = Fcopy_font_spec (font_spec); |
| 1744 | ASET (fontset_spec, FONT_REGISTRY_INDEX, alias); |
| 1745 | name = Ffont_xlfd_name (fontset_spec, Qnil); |
| 1746 | if (NILP (name)) |
| 1747 | abort (); |
| 1748 | fontset = make_fontset (Qnil, name, Qnil); |
| 1749 | Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (alias)), |
| 1750 | Vfontset_alias_alist); |
| 1751 | alias = Fdowncase (AREF (font_object, FONT_NAME_INDEX)); |
| 1752 | Vfontset_alias_alist = Fcons (Fcons (name, alias), Vfontset_alias_alist); |
| 1753 | auto_fontset_alist = Fcons (Fcons (font_spec, fontset), auto_fontset_alist); |
| 1754 | font_spec = Ffont_spec (0, NULL); |
| 1755 | ASET (font_spec, FONT_REGISTRY_INDEX, registry); |
| 1756 | { |
| 1757 | Lisp_Object target = find_font_encoding (SYMBOL_NAME (registry)); |
| 1758 | |
| 1759 | if (CONSP (target)) |
| 1760 | target = XCDR (target); |
| 1761 | if (! CHARSETP (target)) |
| 1762 | target = Qlatin; |
| 1763 | Fset_fontset_font (name, target, font_spec, Qnil, Qnil); |
| 1764 | Fset_fontset_font (name, Qnil, font_spec, Qnil, Qnil); |
| 1765 | } |
| 1766 | |
| 1767 | FONTSET_ASCII (fontset) = font_name; |
| 1768 | |
| 1769 | return XINT (FONTSET_ID (fontset)); |
| 1770 | } |
| 1771 | |
| 1772 | |
| 1773 | /* Update auto_fontset_alist for FONTSET. When an ASCII font of |
| 1774 | FONTSET is changed, we delete an entry of FONTSET if any from |
| 1775 | auto_fontset_alist so that FONTSET is not re-used by |
| 1776 | fontset_from_font. */ |
| 1777 | |
| 1778 | static void |
| 1779 | update_auto_fontset_alist (Lisp_Object font_object, Lisp_Object fontset) |
| 1780 | { |
| 1781 | Lisp_Object prev, tail; |
| 1782 | |
| 1783 | for (prev = Qnil, tail = auto_fontset_alist; CONSP (tail); |
| 1784 | prev = tail, tail = XCDR (tail)) |
| 1785 | if (EQ (fontset, XCDR (XCAR (tail)))) |
| 1786 | { |
| 1787 | if (NILP (prev)) |
| 1788 | auto_fontset_alist = XCDR (tail); |
| 1789 | else |
| 1790 | XSETCDR (prev, XCDR (tail)); |
| 1791 | break; |
| 1792 | } |
| 1793 | } |
| 1794 | |
| 1795 | |
| 1796 | /* Return a cons (FONT-OBJECT . GLYPH-CODE). |
| 1797 | FONT-OBJECT is the font for the character at POSITION in the current |
| 1798 | buffer. This is computed from all the text properties and overlays |
| 1799 | that apply to POSITION. POSTION may be nil, in which case, |
| 1800 | FONT-SPEC is the font for displaying the character CH with the |
| 1801 | default face. |
| 1802 | |
| 1803 | GLYPH-CODE is the glyph code in the font to use for the character. |
| 1804 | |
| 1805 | If the 2nd optional arg CH is non-nil, it is a character to check |
| 1806 | the font instead of the character at POSITION. |
| 1807 | |
| 1808 | It returns nil in the following cases: |
| 1809 | |
| 1810 | (1) The window system doesn't have a font for the character (thus |
| 1811 | it is displayed by an empty box). |
| 1812 | |
| 1813 | (2) The character code is invalid. |
| 1814 | |
| 1815 | (3) If POSITION is not nil, and the current buffer is not displayed |
| 1816 | in any window. |
| 1817 | |
| 1818 | In addition, the returned font name may not take into account of |
| 1819 | such redisplay engine hooks as what used in jit-lock-mode if |
| 1820 | POSITION is currently not visible. */ |
| 1821 | |
| 1822 | |
| 1823 | DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0, |
| 1824 | doc: /* For internal use only. */) |
| 1825 | (Lisp_Object position, Lisp_Object ch) |
| 1826 | { |
| 1827 | EMACS_INT pos, pos_byte, dummy; |
| 1828 | int face_id; |
| 1829 | int c; |
| 1830 | struct frame *f; |
| 1831 | struct face *face; |
| 1832 | int cs_id; |
| 1833 | |
| 1834 | if (NILP (position)) |
| 1835 | { |
| 1836 | CHECK_CHARACTER (ch); |
| 1837 | c = XINT (ch); |
| 1838 | f = XFRAME (selected_frame); |
| 1839 | face_id = lookup_basic_face (f, DEFAULT_FACE_ID); |
| 1840 | pos = -1; |
| 1841 | cs_id = -1; |
| 1842 | } |
| 1843 | else |
| 1844 | { |
| 1845 | Lisp_Object window, charset; |
| 1846 | struct window *w; |
| 1847 | |
| 1848 | CHECK_NUMBER_COERCE_MARKER (position); |
| 1849 | pos = XINT (position); |
| 1850 | if (pos < BEGV || pos >= ZV) |
| 1851 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 1852 | pos_byte = CHAR_TO_BYTE (pos); |
| 1853 | if (NILP (ch)) |
| 1854 | c = FETCH_CHAR (pos_byte); |
| 1855 | else |
| 1856 | { |
| 1857 | CHECK_NATNUM (ch); |
| 1858 | c = XINT (ch); |
| 1859 | } |
| 1860 | window = Fget_buffer_window (Fcurrent_buffer (), Qnil); |
| 1861 | if (NILP (window)) |
| 1862 | return Qnil; |
| 1863 | w = XWINDOW (window); |
| 1864 | f = XFRAME (w->frame); |
| 1865 | face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, |
| 1866 | pos + 100, 0, -1); |
| 1867 | charset = Fget_char_property (position, Qcharset, Qnil); |
| 1868 | if (CHARSETP (charset)) |
| 1869 | cs_id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 1870 | else |
| 1871 | cs_id = -1; |
| 1872 | } |
| 1873 | if (! CHAR_VALID_P (c, 0)) |
| 1874 | return Qnil; |
| 1875 | face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil); |
| 1876 | face = FACE_FROM_ID (f, face_id); |
| 1877 | if (face->font) |
| 1878 | { |
| 1879 | unsigned code = face->font->driver->encode_char (face->font, c); |
| 1880 | Lisp_Object font_object; |
| 1881 | /* Assignment to EMACS_INT stops GCC whining about limited range |
| 1882 | of data type. */ |
| 1883 | EMACS_INT cod = code; |
| 1884 | |
| 1885 | if (code == FONT_INVALID_CODE) |
| 1886 | return Qnil; |
| 1887 | XSETFONT (font_object, face->font); |
| 1888 | if (cod <= MOST_POSITIVE_FIXNUM) |
| 1889 | return Fcons (font_object, make_number (code)); |
| 1890 | return Fcons (font_object, Fcons (make_number (code >> 16), |
| 1891 | make_number (code & 0xFFFF))); |
| 1892 | } |
| 1893 | return Qnil; |
| 1894 | } |
| 1895 | |
| 1896 | |
| 1897 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, |
| 1898 | doc: /* Return information about a fontset FONTSET on frame FRAME. |
| 1899 | |
| 1900 | FONTSET is a fontset name string, nil for the fontset of FRAME, or t |
| 1901 | for the default fontset. FRAME nil means the selected frame. |
| 1902 | |
| 1903 | The value is a char-table whose elements have this form: |
| 1904 | |
| 1905 | ((FONT OPENED-FONT ...) ...) |
| 1906 | |
| 1907 | FONT is a name of font specified for a range of characters. |
| 1908 | |
| 1909 | OPENED-FONT is a name of a font actually opened. |
| 1910 | |
| 1911 | The char-table has one extra slot. If FONTSET is not the default |
| 1912 | fontset, the value the extra slot is a char-table containing the |
| 1913 | information about the derived fonts from the default fontset. The |
| 1914 | format is the same as above. */) |
| 1915 | (Lisp_Object fontset, Lisp_Object frame) |
| 1916 | { |
| 1917 | FRAME_PTR f; |
| 1918 | Lisp_Object *realized[2], fontsets[2], tables[2]; |
| 1919 | Lisp_Object val, elt; |
| 1920 | int c, i, j, k; |
| 1921 | |
| 1922 | (*check_window_system_func) (); |
| 1923 | |
| 1924 | fontset = check_fontset_name (fontset, &frame); |
| 1925 | f = XFRAME (frame); |
| 1926 | |
| 1927 | /* Recode fontsets realized on FRAME from the base fontset FONTSET |
| 1928 | in the table `realized'. */ |
| 1929 | realized[0] = (Lisp_Object *) alloca (sizeof (Lisp_Object) |
| 1930 | * ASIZE (Vfontset_table)); |
| 1931 | for (i = j = 0; i < ASIZE (Vfontset_table); i++) |
| 1932 | { |
| 1933 | elt = FONTSET_FROM_ID (i); |
| 1934 | if (!NILP (elt) |
| 1935 | && EQ (FONTSET_BASE (elt), fontset) |
| 1936 | && EQ (FONTSET_FRAME (elt), frame)) |
| 1937 | realized[0][j++] = elt; |
| 1938 | } |
| 1939 | realized[0][j] = Qnil; |
| 1940 | |
| 1941 | realized[1] = (Lisp_Object *) alloca (sizeof (Lisp_Object) |
| 1942 | * ASIZE (Vfontset_table)); |
| 1943 | for (i = j = 0; ! NILP (realized[0][i]); i++) |
| 1944 | { |
| 1945 | elt = FONTSET_DEFAULT (realized[0][i]); |
| 1946 | if (! NILP (elt)) |
| 1947 | realized[1][j++] = elt; |
| 1948 | } |
| 1949 | realized[1][j] = Qnil; |
| 1950 | |
| 1951 | tables[0] = Fmake_char_table (Qfontset_info, Qnil); |
| 1952 | fontsets[0] = fontset; |
| 1953 | if (!EQ (fontset, Vdefault_fontset)) |
| 1954 | { |
| 1955 | tables[1] = Fmake_char_table (Qnil, Qnil); |
| 1956 | XCHAR_TABLE (tables[0])->extras[0] = tables[1]; |
| 1957 | fontsets[1] = Vdefault_fontset; |
| 1958 | } |
| 1959 | |
| 1960 | /* Accumulate information of the fontset in TABLE. The format of |
| 1961 | each element is ((FONT-SPEC OPENED-FONT ...) ...). */ |
| 1962 | for (k = 0; k <= 1; k++) |
| 1963 | { |
| 1964 | for (c = 0; c <= MAX_CHAR; ) |
| 1965 | { |
| 1966 | int from = c, to = MAX_5_BYTE_CHAR; |
| 1967 | |
| 1968 | if (c <= MAX_5_BYTE_CHAR) |
| 1969 | { |
| 1970 | val = char_table_ref_and_range (fontsets[k], c, &from, &to); |
| 1971 | } |
| 1972 | else |
| 1973 | { |
| 1974 | val = FONTSET_FALLBACK (fontsets[k]); |
| 1975 | to = MAX_CHAR; |
| 1976 | } |
| 1977 | if (VECTORP (val)) |
| 1978 | { |
| 1979 | Lisp_Object alist; |
| 1980 | |
| 1981 | /* At first, set ALIST to ((FONT-SPEC) ...). */ |
| 1982 | for (alist = Qnil, i = 0; i < ASIZE (val); i++) |
| 1983 | if (! NILP (AREF (val, i))) |
| 1984 | alist = Fcons (Fcons (FONT_DEF_SPEC (AREF (val, i)), Qnil), |
| 1985 | alist); |
| 1986 | alist = Fnreverse (alist); |
| 1987 | |
| 1988 | /* Then store opened font names to cdr of each elements. */ |
| 1989 | for (i = 0; ! NILP (realized[k][i]); i++) |
| 1990 | { |
| 1991 | if (c <= MAX_5_BYTE_CHAR) |
| 1992 | val = FONTSET_REF (realized[k][i], c); |
| 1993 | else |
| 1994 | val = FONTSET_FALLBACK (realized[k][i]); |
| 1995 | if (! CONSP (val) || ! VECTORP (XCDR (val))) |
| 1996 | continue; |
| 1997 | /* VAL: (int . [[FACE-ID FONT-DEF FONT-OBJECT int] ... ]) */ |
| 1998 | val = XCDR (val); |
| 1999 | for (j = 0; j < ASIZE (val); j++) |
| 2000 | { |
| 2001 | elt = AREF (val, j); |
| 2002 | if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt))) |
| 2003 | { |
| 2004 | Lisp_Object font_object = RFONT_DEF_OBJECT (elt); |
| 2005 | Lisp_Object slot, name; |
| 2006 | |
| 2007 | slot = Fassq (RFONT_DEF_SPEC (elt), alist); |
| 2008 | name = AREF (font_object, FONT_NAME_INDEX); |
| 2009 | if (NILP (Fmember (name, XCDR (slot)))) |
| 2010 | nconc2 (slot, Fcons (name, Qnil)); |
| 2011 | } |
| 2012 | } |
| 2013 | } |
| 2014 | |
| 2015 | /* Store ALIST in TBL for characters C..TO. */ |
| 2016 | if (c <= MAX_5_BYTE_CHAR) |
| 2017 | char_table_set_range (tables[k], c, to, alist); |
| 2018 | else |
| 2019 | XCHAR_TABLE (tables[k])->defalt = alist; |
| 2020 | |
| 2021 | /* At last, change each elements to font names. */ |
| 2022 | for (; CONSP (alist); alist = XCDR (alist)) |
| 2023 | { |
| 2024 | elt = XCAR (alist); |
| 2025 | XSETCAR (elt, Ffont_xlfd_name (XCAR (elt), Qnil)); |
| 2026 | } |
| 2027 | } |
| 2028 | c = to + 1; |
| 2029 | } |
| 2030 | if (EQ (fontset, Vdefault_fontset)) |
| 2031 | break; |
| 2032 | } |
| 2033 | |
| 2034 | return tables[0]; |
| 2035 | } |
| 2036 | |
| 2037 | |
| 2038 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 3, 0, |
| 2039 | doc: /* Return a font name pattern for character CH in fontset NAME. |
| 2040 | If NAME is t, find a pattern in the default fontset. |
| 2041 | If NAME is nil, find a pattern in the fontset of the selected frame. |
| 2042 | |
| 2043 | The value has the form (FAMILY . REGISTRY), where FAMILY is a font |
| 2044 | family name and REGISTRY is a font registry name. This is actually |
| 2045 | the first font name pattern for CH in the fontset or in the default |
| 2046 | fontset. |
| 2047 | |
| 2048 | If the 2nd optional arg ALL is non-nil, return a list of all font name |
| 2049 | patterns. */) |
| 2050 | (Lisp_Object name, Lisp_Object ch, Lisp_Object all) |
| 2051 | { |
| 2052 | int c; |
| 2053 | Lisp_Object fontset, elt, list, repertory, val; |
| 2054 | int i, j; |
| 2055 | Lisp_Object frame; |
| 2056 | |
| 2057 | frame = Qnil; |
| 2058 | fontset = check_fontset_name (name, &frame); |
| 2059 | |
| 2060 | CHECK_CHARACTER (ch); |
| 2061 | c = XINT (ch); |
| 2062 | list = Qnil; |
| 2063 | while (1) |
| 2064 | { |
| 2065 | for (i = 0, elt = FONTSET_REF (fontset, c); i < 2; |
| 2066 | i++, elt = FONTSET_FALLBACK (fontset)) |
| 2067 | if (VECTORP (elt)) |
| 2068 | for (j = 0; j < ASIZE (elt); j++) |
| 2069 | { |
| 2070 | Lisp_Object family, registry; |
| 2071 | |
| 2072 | val = AREF (elt, j); |
| 2073 | if (NILP (val)) |
| 2074 | return Qnil; |
| 2075 | repertory = AREF (val, 1); |
| 2076 | if (INTEGERP (repertory)) |
| 2077 | { |
| 2078 | struct charset *charset = CHARSET_FROM_ID (XINT (repertory)); |
| 2079 | |
| 2080 | if (! CHAR_CHARSET_P (c, charset)) |
| 2081 | continue; |
| 2082 | } |
| 2083 | else if (CHAR_TABLE_P (repertory)) |
| 2084 | { |
| 2085 | if (NILP (CHAR_TABLE_REF (repertory, c))) |
| 2086 | continue; |
| 2087 | } |
| 2088 | val = AREF (val, 0); |
| 2089 | /* VAL is a FONT-SPEC */ |
| 2090 | family = AREF (val, FONT_FAMILY_INDEX); |
| 2091 | if (! NILP (family)) |
| 2092 | family = SYMBOL_NAME (family); |
| 2093 | registry = AREF (val, FONT_REGISTRY_INDEX); |
| 2094 | if (! NILP (registry)) |
| 2095 | registry = SYMBOL_NAME (registry); |
| 2096 | val = Fcons (family, registry); |
| 2097 | if (NILP (all)) |
| 2098 | return val; |
| 2099 | list = Fcons (val, list); |
| 2100 | } |
| 2101 | if (EQ (fontset, Vdefault_fontset)) |
| 2102 | break; |
| 2103 | fontset = Vdefault_fontset; |
| 2104 | } |
| 2105 | return (Fnreverse (list)); |
| 2106 | } |
| 2107 | |
| 2108 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, |
| 2109 | doc: /* Return a list of all defined fontset names. */) |
| 2110 | (void) |
| 2111 | { |
| 2112 | Lisp_Object fontset, list; |
| 2113 | int i; |
| 2114 | |
| 2115 | list = Qnil; |
| 2116 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 2117 | { |
| 2118 | fontset = FONTSET_FROM_ID (i); |
| 2119 | if (!NILP (fontset) |
| 2120 | && BASE_FONTSET_P (fontset)) |
| 2121 | list = Fcons (FONTSET_NAME (fontset), list); |
| 2122 | } |
| 2123 | |
| 2124 | return list; |
| 2125 | } |
| 2126 | |
| 2127 | |
| 2128 | #ifdef FONTSET_DEBUG |
| 2129 | |
| 2130 | Lisp_Object |
| 2131 | dump_fontset (fontset) |
| 2132 | Lisp_Object fontset; |
| 2133 | { |
| 2134 | Lisp_Object vec; |
| 2135 | |
| 2136 | vec = Fmake_vector (make_number (3), Qnil); |
| 2137 | ASET (vec, 0, FONTSET_ID (fontset)); |
| 2138 | |
| 2139 | if (BASE_FONTSET_P (fontset)) |
| 2140 | { |
| 2141 | ASET (vec, 1, FONTSET_NAME (fontset)); |
| 2142 | } |
| 2143 | else |
| 2144 | { |
| 2145 | Lisp_Object frame; |
| 2146 | |
| 2147 | frame = FONTSET_FRAME (fontset); |
| 2148 | if (FRAMEP (frame)) |
| 2149 | { |
| 2150 | FRAME_PTR f = XFRAME (frame); |
| 2151 | |
| 2152 | if (FRAME_LIVE_P (f)) |
| 2153 | ASET (vec, 1, |
| 2154 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), f->name)); |
| 2155 | else |
| 2156 | ASET (vec, 1, |
| 2157 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), Qnil)); |
| 2158 | } |
| 2159 | if (!NILP (FONTSET_DEFAULT (fontset))) |
| 2160 | ASET (vec, 2, FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 2161 | } |
| 2162 | return vec; |
| 2163 | } |
| 2164 | |
| 2165 | DEFUN ("fontset-list-all", Ffontset_list_all, Sfontset_list_all, 0, 0, 0, |
| 2166 | doc: /* Return a brief summary of all fontsets for debug use. */) |
| 2167 | (void) |
| 2168 | { |
| 2169 | Lisp_Object val; |
| 2170 | int i; |
| 2171 | |
| 2172 | for (i = 0, val = Qnil; i < ASIZE (Vfontset_table); i++) |
| 2173 | if (! NILP (AREF (Vfontset_table, i))) |
| 2174 | val = Fcons (dump_fontset (AREF (Vfontset_table, i)), val); |
| 2175 | return (Fnreverse (val)); |
| 2176 | } |
| 2177 | #endif /* FONTSET_DEBUG */ |
| 2178 | |
| 2179 | void |
| 2180 | syms_of_fontset (void) |
| 2181 | { |
| 2182 | DEFSYM (Qfontset, "fontset"); |
| 2183 | Fput (Qfontset, Qchar_table_extra_slots, make_number (9)); |
| 2184 | DEFSYM (Qfontset_info, "fontset-info"); |
| 2185 | Fput (Qfontset_info, Qchar_table_extra_slots, make_number (1)); |
| 2186 | |
| 2187 | DEFSYM (Qprepend, "prepend"); |
| 2188 | DEFSYM (Qappend, "append"); |
| 2189 | DEFSYM (Qlatin, "latin"); |
| 2190 | |
| 2191 | Vcached_fontset_data = Qnil; |
| 2192 | staticpro (&Vcached_fontset_data); |
| 2193 | |
| 2194 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
| 2195 | staticpro (&Vfontset_table); |
| 2196 | |
| 2197 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); |
| 2198 | staticpro (&Vdefault_fontset); |
| 2199 | FONTSET_ID (Vdefault_fontset) = make_number (0); |
| 2200 | FONTSET_NAME (Vdefault_fontset) |
| 2201 | = make_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"); |
| 2202 | ASET (Vfontset_table, 0, Vdefault_fontset); |
| 2203 | next_fontset_id = 1; |
| 2204 | |
| 2205 | auto_fontset_alist = Qnil; |
| 2206 | staticpro (&auto_fontset_alist); |
| 2207 | |
| 2208 | DEFVAR_LISP ("font-encoding-charset-alist", &Vfont_encoding_charset_alist, |
| 2209 | doc: /* |
| 2210 | Alist of charsets vs the charsets to determine the preferred font encoding. |
| 2211 | Each element looks like (CHARSET . ENCODING-CHARSET), |
| 2212 | where ENCODING-CHARSET is a charset registered in the variable |
| 2213 | `font-encoding-alist' as ENCODING. |
| 2214 | |
| 2215 | When a text has a property `charset' and the value is CHARSET, a font |
| 2216 | whose encoding corresponds to ENCODING-CHARSET is preferred. */); |
| 2217 | Vfont_encoding_charset_alist = Qnil; |
| 2218 | |
| 2219 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
| 2220 | doc: /* |
| 2221 | Char table of characters whose ascent values should be ignored. |
| 2222 | If an entry for a character is non-nil, the ascent value of the glyph |
| 2223 | is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font. |
| 2224 | |
| 2225 | This affects how a composite character which contains |
| 2226 | such a character is displayed on screen. */); |
| 2227 | Vuse_default_ascent = Qnil; |
| 2228 | |
| 2229 | DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition, |
| 2230 | doc: /* |
| 2231 | Char table of characters which are not composed relatively. |
| 2232 | If an entry for a character is non-nil, a composition sequence |
| 2233 | which contains that character is displayed so that |
| 2234 | the glyph of that character is put without considering |
| 2235 | an ascent and descent value of a previous character. */); |
| 2236 | Vignore_relative_composition = Qnil; |
| 2237 | |
| 2238 | DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist, |
| 2239 | doc: /* Alist of fontname vs list of the alternate fontnames. |
| 2240 | When a specified font name is not found, the corresponding |
| 2241 | alternate fontnames (if any) are tried instead. */); |
| 2242 | Valternate_fontname_alist = Qnil; |
| 2243 | |
| 2244 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
| 2245 | doc: /* Alist of fontset names vs the aliases. */); |
| 2246 | Vfontset_alias_alist = Fcons (Fcons (FONTSET_NAME (Vdefault_fontset), |
| 2247 | make_pure_c_string ("fontset-default")), |
| 2248 | Qnil); |
| 2249 | |
| 2250 | DEFVAR_LISP ("vertical-centering-font-regexp", |
| 2251 | &Vvertical_centering_font_regexp, |
| 2252 | doc: /* *Regexp matching font names that require vertical centering on display. |
| 2253 | When a character is displayed with such fonts, the character is displayed |
| 2254 | at the vertical center of lines. */); |
| 2255 | Vvertical_centering_font_regexp = Qnil; |
| 2256 | |
| 2257 | DEFVAR_LISP ("otf-script-alist", &Votf_script_alist, |
| 2258 | doc: /* Alist of OpenType script tags vs the corresponding script names. */); |
| 2259 | Votf_script_alist = Qnil; |
| 2260 | |
| 2261 | defsubr (&Squery_fontset); |
| 2262 | defsubr (&Snew_fontset); |
| 2263 | defsubr (&Sset_fontset_font); |
| 2264 | defsubr (&Sinternal_char_font); |
| 2265 | defsubr (&Sfontset_info); |
| 2266 | defsubr (&Sfontset_font); |
| 2267 | defsubr (&Sfontset_list); |
| 2268 | #ifdef FONTSET_DEBUG |
| 2269 | defsubr (&Sfontset_list_all); |
| 2270 | #endif |
| 2271 | } |
| 2272 | |
| 2273 | /* arch-tag: ea861585-2f5f-4e5b-9849-d04a9c3a3537 |
| 2274 | (do not change this comment) */ |