| 1 | /* Fontset handler. |
| 2 | |
| 3 | Copyright (C) 2001-2013 Free Software Foundation, Inc. |
| 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 5 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 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 | #include <config.h> |
| 28 | #include <stdio.h> |
| 29 | |
| 30 | #include "lisp.h" |
| 31 | #include "blockinput.h" |
| 32 | #include "character.h" |
| 33 | #include "buffer.h" |
| 34 | #include "charset.h" |
| 35 | #include "ccl.h" |
| 36 | #include "keyboard.h" |
| 37 | #include "frame.h" |
| 38 | #include "dispextern.h" |
| 39 | #include "intervals.h" |
| 40 | #include "fontset.h" |
| 41 | #include "window.h" |
| 42 | #ifdef HAVE_WINDOW_SYSTEM |
| 43 | #include TERM_HEADER |
| 44 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 45 | #include "termhooks.h" |
| 46 | #include "font.h" |
| 47 | |
| 48 | /* FONTSET |
| 49 | |
| 50 | A fontset is a collection of font related information to give |
| 51 | similar appearance (style, etc) of characters. A fontset has two |
| 52 | roles. One is to use for the frame parameter `font' as if it is an |
| 53 | ASCII font. In that case, Emacs uses the font specified for |
| 54 | `ascii' script for the frame's default font. |
| 55 | |
| 56 | Another role, the more important one, is to provide information |
| 57 | about which font to use for each non-ASCII character. |
| 58 | |
| 59 | There are two kinds of fontsets; base and realized. A base fontset |
| 60 | is created by `new-fontset' from Emacs Lisp explicitly. A realized |
| 61 | fontset is created implicitly when a face is realized for ASCII |
| 62 | characters. A face is also realized for non-ASCII characters based |
| 63 | on an ASCII face. All of non-ASCII faces based on the same ASCII |
| 64 | face share the same realized fontset. |
| 65 | |
| 66 | A fontset object is implemented by a char-table whose default value |
| 67 | and parent are always nil. |
| 68 | |
| 69 | An element of a base fontset is a vector of FONT-DEFs which itself |
| 70 | is a vector [ FONT-SPEC ENCODING REPERTORY ]. |
| 71 | |
| 72 | An element of a realized fontset is nil, t, 0, or a vector of this |
| 73 | form: |
| 74 | |
| 75 | [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF |
| 76 | RFONT-DEF0 RFONT-DEF1 ... ] |
| 77 | |
| 78 | RFONT-DEFn (i.e. Realized FONT-DEF) has this form: |
| 79 | |
| 80 | [ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ] |
| 81 | |
| 82 | RFONT-DEFn are automatically reordered by the current charset |
| 83 | priority list. |
| 84 | |
| 85 | The value nil means that we have not yet generated the above vector |
| 86 | from the base of the fontset. |
| 87 | |
| 88 | The value t means that no font is available for the corresponding |
| 89 | range of characters. |
| 90 | |
| 91 | The value 0 means that no font is available for the corresponding |
| 92 | range of characters in this fontset, but may be available in the |
| 93 | default fontset. |
| 94 | |
| 95 | |
| 96 | A fontset has 9 extra slots. |
| 97 | |
| 98 | The 1st slot: the ID number of the fontset |
| 99 | |
| 100 | The 2nd slot: |
| 101 | base: the name of the fontset |
| 102 | realized: nil |
| 103 | |
| 104 | The 3rd slot: |
| 105 | base: nil |
| 106 | realized: the base fontset |
| 107 | |
| 108 | The 4th slot: |
| 109 | base: nil |
| 110 | realized: the frame that the fontset belongs to |
| 111 | |
| 112 | The 5th slot: |
| 113 | base: the font name for ASCII characters |
| 114 | realized: nil |
| 115 | |
| 116 | The 6th slot: |
| 117 | base: nil |
| 118 | realized: the ID number of a face to use for characters that |
| 119 | has no font in a realized fontset. |
| 120 | |
| 121 | The 7th slot: |
| 122 | base: nil |
| 123 | realized: Alist of font index vs the corresponding repertory |
| 124 | char-table. |
| 125 | |
| 126 | The 8th slot: |
| 127 | base: nil |
| 128 | realized: If the base is not the default fontset, a fontset |
| 129 | realized from the default fontset, else nil. |
| 130 | |
| 131 | The 9th slot: |
| 132 | base: Same as element value (but for fallback fonts). |
| 133 | realized: Likewise. |
| 134 | |
| 135 | All fontsets are recorded in the vector Vfontset_table. |
| 136 | |
| 137 | |
| 138 | DEFAULT FONTSET |
| 139 | |
| 140 | There's a special base fontset named `default fontset' which |
| 141 | defines the default font specifications. When a base fontset |
| 142 | doesn't specify a font for a specific character, the corresponding |
| 143 | value in the default fontset is used. |
| 144 | |
| 145 | The parent of a realized fontset created for such a face that has |
| 146 | no fontset is the default fontset. |
| 147 | |
| 148 | |
| 149 | These structures are hidden from the other codes than this file. |
| 150 | The other codes handle fontsets only by their ID numbers. They |
| 151 | usually use the variable name `fontset' for IDs. But, in this |
| 152 | file, we always use variable name `id' for IDs, and name `fontset' |
| 153 | for an actual fontset object, i.e., char-table. |
| 154 | |
| 155 | */ |
| 156 | |
| 157 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ |
| 158 | |
| 159 | static Lisp_Object Qfontset; |
| 160 | static Lisp_Object Qfontset_info; |
| 161 | static Lisp_Object Qprepend, Qappend; |
| 162 | Lisp_Object Qlatin; |
| 163 | |
| 164 | /* Vector containing all fontsets. */ |
| 165 | static Lisp_Object Vfontset_table; |
| 166 | |
| 167 | /* Next possibly free fontset ID. Usually this keeps the minimum |
| 168 | fontset ID not yet used. */ |
| 169 | static int next_fontset_id; |
| 170 | |
| 171 | /* The default fontset. This gives default FAMILY and REGISTRY of |
| 172 | font for each character. */ |
| 173 | static Lisp_Object Vdefault_fontset; |
| 174 | |
| 175 | /* Prototype declarations for static functions. */ |
| 176 | static Lisp_Object make_fontset (Lisp_Object, Lisp_Object, Lisp_Object); |
| 177 | |
| 178 | /* Return true if ID is a valid fontset id. |
| 179 | Optimized away if ENABLE_CHECKING is not defined. */ |
| 180 | |
| 181 | static bool |
| 182 | fontset_id_valid_p (int id) |
| 183 | { |
| 184 | return (id >= 0 && id < ASIZE (Vfontset_table) - 1); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | \f |
| 189 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ |
| 190 | |
| 191 | /* Return the fontset with ID. No check of ID's validness. */ |
| 192 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) |
| 193 | |
| 194 | /* Access special values of FONTSET. */ |
| 195 | |
| 196 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] |
| 197 | static void |
| 198 | set_fontset_id (Lisp_Object fontset, Lisp_Object id) |
| 199 | { |
| 200 | set_char_table_extras (fontset, 0, id); |
| 201 | } |
| 202 | |
| 203 | /* Access special values of (base) FONTSET. */ |
| 204 | |
| 205 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] |
| 206 | static void |
| 207 | set_fontset_name (Lisp_Object fontset, Lisp_Object name) |
| 208 | { |
| 209 | set_char_table_extras (fontset, 1, name); |
| 210 | } |
| 211 | |
| 212 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4] |
| 213 | static void |
| 214 | set_fontset_ascii (Lisp_Object fontset, Lisp_Object ascii) |
| 215 | { |
| 216 | set_char_table_extras (fontset, 4, ascii); |
| 217 | } |
| 218 | |
| 219 | /* Access special values of (realized) FONTSET. */ |
| 220 | |
| 221 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2] |
| 222 | static void |
| 223 | set_fontset_base (Lisp_Object fontset, Lisp_Object base) |
| 224 | { |
| 225 | set_char_table_extras (fontset, 2, base); |
| 226 | } |
| 227 | |
| 228 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3] |
| 229 | static void |
| 230 | set_fontset_frame (Lisp_Object fontset, Lisp_Object frame) |
| 231 | { |
| 232 | set_char_table_extras (fontset, 3, frame); |
| 233 | } |
| 234 | |
| 235 | #define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5] |
| 236 | static void |
| 237 | set_fontset_nofont_face (Lisp_Object fontset, Lisp_Object face) |
| 238 | { |
| 239 | set_char_table_extras (fontset, 5, face); |
| 240 | } |
| 241 | |
| 242 | #define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7] |
| 243 | static void |
| 244 | set_fontset_default (Lisp_Object fontset, Lisp_Object def) |
| 245 | { |
| 246 | set_char_table_extras (fontset, 7, def); |
| 247 | } |
| 248 | |
| 249 | /* For both base and realized fontset. */ |
| 250 | |
| 251 | #define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8] |
| 252 | static void |
| 253 | set_fontset_fallback (Lisp_Object fontset, Lisp_Object fallback) |
| 254 | { |
| 255 | set_char_table_extras (fontset, 8, fallback); |
| 256 | } |
| 257 | |
| 258 | #define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset))) |
| 259 | |
| 260 | /* Macros for FONT-DEF and RFONT-DEF of fontset. */ |
| 261 | #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \ |
| 262 | do { \ |
| 263 | (font_def) = make_uninit_vector (3); \ |
| 264 | ASET ((font_def), 0, font_spec); \ |
| 265 | ASET ((font_def), 1, encoding); \ |
| 266 | ASET ((font_def), 2, repertory); \ |
| 267 | } while (0) |
| 268 | |
| 269 | #define FONT_DEF_SPEC(font_def) AREF (font_def, 0) |
| 270 | #define FONT_DEF_ENCODING(font_def) AREF (font_def, 1) |
| 271 | #define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2) |
| 272 | |
| 273 | #define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0) |
| 274 | #define RFONT_DEF_SET_FACE(rfont_def, face_id) \ |
| 275 | ASET ((rfont_def), 0, make_number (face_id)) |
| 276 | #define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1) |
| 277 | #define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1)) |
| 278 | #define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2) |
| 279 | #define RFONT_DEF_SET_OBJECT(rfont_def, object) \ |
| 280 | ASET ((rfont_def), 2, (object)) |
| 281 | /* Score of RFONT_DEF is an integer value; the lowest 8 bits represent |
| 282 | the order of listing by font backends, the higher bits represents |
| 283 | the order given by charset priority list. The smaller value is |
| 284 | preferable. */ |
| 285 | #define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3)) |
| 286 | #define RFONT_DEF_SET_SCORE(rfont_def, score) \ |
| 287 | ASET ((rfont_def), 3, make_number (score)) |
| 288 | #define RFONT_DEF_NEW(rfont_def, font_def) \ |
| 289 | do { \ |
| 290 | (rfont_def) = Fmake_vector (make_number (4), Qnil); \ |
| 291 | ASET ((rfont_def), 1, (font_def)); \ |
| 292 | RFONT_DEF_SET_SCORE ((rfont_def), 0); \ |
| 293 | } while (0) |
| 294 | |
| 295 | |
| 296 | /* Return the element of FONTSET for the character C. If FONTSET is a |
| 297 | base fontset other then the default fontset and FONTSET doesn't |
| 298 | contain information for C, return the information in the default |
| 299 | fontset. */ |
| 300 | |
| 301 | #define FONTSET_REF(fontset, c) \ |
| 302 | (EQ (fontset, Vdefault_fontset) \ |
| 303 | ? CHAR_TABLE_REF (fontset, c) \ |
| 304 | : fontset_ref ((fontset), (c))) |
| 305 | |
| 306 | static Lisp_Object |
| 307 | fontset_ref (Lisp_Object fontset, int c) |
| 308 | { |
| 309 | Lisp_Object elt; |
| 310 | |
| 311 | elt = CHAR_TABLE_REF (fontset, c); |
| 312 | if (NILP (elt) && ! EQ (fontset, Vdefault_fontset) |
| 313 | /* Don't check Vdefault_fontset for a realized fontset. */ |
| 314 | && NILP (FONTSET_BASE (fontset))) |
| 315 | elt = CHAR_TABLE_REF (Vdefault_fontset, c); |
| 316 | return elt; |
| 317 | } |
| 318 | |
| 319 | /* Set elements of FONTSET for characters in RANGE to the value ELT. |
| 320 | RANGE is a cons (FROM . TO), where FROM and TO are character codes |
| 321 | specifying a range. */ |
| 322 | |
| 323 | #define FONTSET_SET(fontset, range, elt) \ |
| 324 | Fset_char_table_range ((fontset), (range), (elt)) |
| 325 | |
| 326 | |
| 327 | /* Modify the elements of FONTSET for characters in RANGE by replacing |
| 328 | with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM |
| 329 | and TO are character codes specifying a range. If ADD is nil, |
| 330 | replace with ELT, if ADD is `prepend', prepend ELT, otherwise, |
| 331 | append ELT. */ |
| 332 | |
| 333 | #define FONTSET_ADD(fontset, range, elt, add) \ |
| 334 | (NILP (add) \ |
| 335 | ? (NILP (range) \ |
| 336 | ? (set_fontset_fallback \ |
| 337 | (fontset, Fmake_vector (make_number (1), (elt)))) \ |
| 338 | : ((void) \ |
| 339 | Fset_char_table_range (fontset, range, \ |
| 340 | Fmake_vector (make_number (1), elt)))) \ |
| 341 | : fontset_add ((fontset), (range), (elt), (add))) |
| 342 | |
| 343 | static void |
| 344 | fontset_add (Lisp_Object fontset, Lisp_Object range, Lisp_Object elt, Lisp_Object add) |
| 345 | { |
| 346 | Lisp_Object args[2]; |
| 347 | int idx = (EQ (add, Qappend) ? 0 : 1); |
| 348 | |
| 349 | args[1 - idx] = Fmake_vector (make_number (1), elt); |
| 350 | |
| 351 | if (CONSP (range)) |
| 352 | { |
| 353 | int from = XINT (XCAR (range)); |
| 354 | int to = XINT (XCDR (range)); |
| 355 | int from1, to1; |
| 356 | |
| 357 | do { |
| 358 | from1 = from, to1 = to; |
| 359 | args[idx] = char_table_ref_and_range (fontset, from, &from1, &to1); |
| 360 | char_table_set_range (fontset, from, to1, |
| 361 | NILP (args[idx]) ? args[1 - idx] |
| 362 | : Fvconcat (2, args)); |
| 363 | from = to1 + 1; |
| 364 | } while (from < to); |
| 365 | } |
| 366 | else |
| 367 | { |
| 368 | args[idx] = FONTSET_FALLBACK (fontset); |
| 369 | set_fontset_fallback |
| 370 | (fontset, NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args)); |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | static int |
| 375 | fontset_compare_rfontdef (const void *val1, const void *val2) |
| 376 | { |
| 377 | return (RFONT_DEF_SCORE (*(Lisp_Object *) val1) |
| 378 | - RFONT_DEF_SCORE (*(Lisp_Object *) val2)); |
| 379 | } |
| 380 | |
| 381 | /* Update FONT-GROUP which has this form: |
| 382 | [ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF |
| 383 | RFONT-DEF0 RFONT-DEF1 ... ] |
| 384 | Reorder RFONT-DEFs according to the current language, and update |
| 385 | CHARSET-ORDERED-LIST-TICK. |
| 386 | |
| 387 | If PREFERRED_FAMILY is not nil, that family has the higher priority |
| 388 | if the encoding charsets or languages in font-specs are the same. */ |
| 389 | |
| 390 | static void |
| 391 | reorder_font_vector (Lisp_Object font_group, struct font *font) |
| 392 | { |
| 393 | Lisp_Object vec, font_object; |
| 394 | int size; |
| 395 | int i; |
| 396 | bool score_changed = 0; |
| 397 | |
| 398 | if (font) |
| 399 | XSETFONT (font_object, font); |
| 400 | else |
| 401 | font_object = Qnil; |
| 402 | |
| 403 | vec = XCDR (font_group); |
| 404 | size = ASIZE (vec); |
| 405 | /* Exclude the tailing nil element from the reordering. */ |
| 406 | if (NILP (AREF (vec, size - 1))) |
| 407 | size--; |
| 408 | |
| 409 | for (i = 0; i < size; i++) |
| 410 | { |
| 411 | Lisp_Object rfont_def = AREF (vec, i); |
| 412 | Lisp_Object font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 413 | Lisp_Object font_spec = FONT_DEF_SPEC (font_def); |
| 414 | int score = RFONT_DEF_SCORE (rfont_def) & 0xFF; |
| 415 | Lisp_Object otf_spec = Ffont_get (font_spec, QCotf); |
| 416 | |
| 417 | if (! NILP (otf_spec)) |
| 418 | /* A font-spec with :otf is preferable regardless of encoding |
| 419 | and language.. */ |
| 420 | ; |
| 421 | else if (! font_match_p (font_spec, font_object)) |
| 422 | { |
| 423 | Lisp_Object encoding = FONT_DEF_ENCODING (font_def); |
| 424 | |
| 425 | if (! NILP (encoding)) |
| 426 | { |
| 427 | Lisp_Object tail; |
| 428 | |
| 429 | for (tail = Vcharset_ordered_list; |
| 430 | ! EQ (tail, Vcharset_non_preferred_head) && CONSP (tail); |
| 431 | tail = XCDR (tail)) |
| 432 | if (EQ (encoding, XCAR (tail))) |
| 433 | break; |
| 434 | else if (score <= min (INT_MAX, MOST_POSITIVE_FIXNUM) - 0x100) |
| 435 | score += 0x100; |
| 436 | } |
| 437 | else |
| 438 | { |
| 439 | Lisp_Object lang = Ffont_get (font_spec, QClang); |
| 440 | |
| 441 | if (! NILP (lang) |
| 442 | && ! EQ (lang, Vcurrent_iso639_language) |
| 443 | && (! CONSP (Vcurrent_iso639_language) |
| 444 | || NILP (Fmemq (lang, Vcurrent_iso639_language)))) |
| 445 | score |= 0x100; |
| 446 | } |
| 447 | } |
| 448 | if (RFONT_DEF_SCORE (rfont_def) != score) |
| 449 | { |
| 450 | RFONT_DEF_SET_SCORE (rfont_def, score); |
| 451 | score_changed = 1; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | if (score_changed) |
| 456 | qsort (XVECTOR (vec)->contents, size, word_size, |
| 457 | fontset_compare_rfontdef); |
| 458 | XSETCAR (font_group, make_number (charset_ordered_list_tick)); |
| 459 | } |
| 460 | |
| 461 | /* Return a font-group (actually a cons (-1 . FONT-GROUP-VECTOR)) for |
| 462 | character C in FONTSET. If C is -1, return a fallback font-group. |
| 463 | If C is not -1, the value may be Qt (FONTSET doesn't have a font |
| 464 | for C even in the fallback group), or 0 (a font for C may be found |
| 465 | only in the fallback group). */ |
| 466 | |
| 467 | static Lisp_Object |
| 468 | fontset_get_font_group (Lisp_Object fontset, int c) |
| 469 | { |
| 470 | Lisp_Object font_group; |
| 471 | Lisp_Object base_fontset; |
| 472 | int from = 0, to = MAX_CHAR, i; |
| 473 | |
| 474 | eassert (! BASE_FONTSET_P (fontset)); |
| 475 | if (c >= 0) |
| 476 | font_group = CHAR_TABLE_REF (fontset, c); |
| 477 | else |
| 478 | font_group = FONTSET_FALLBACK (fontset); |
| 479 | if (! NILP (font_group)) |
| 480 | return font_group; |
| 481 | base_fontset = FONTSET_BASE (fontset); |
| 482 | if (NILP (base_fontset)) |
| 483 | font_group = Qnil; |
| 484 | else 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 | if (!VECTORP (font_group)) |
| 496 | return font_group; |
| 497 | font_group = Fcopy_sequence (font_group); |
| 498 | for (i = 0; i < ASIZE (font_group); i++) |
| 499 | if (! NILP (AREF (font_group, i))) |
| 500 | { |
| 501 | Lisp_Object rfont_def; |
| 502 | |
| 503 | RFONT_DEF_NEW (rfont_def, AREF (font_group, i)); |
| 504 | /* Remember the original order. */ |
| 505 | RFONT_DEF_SET_SCORE (rfont_def, i); |
| 506 | ASET (font_group, i, rfont_def); |
| 507 | } |
| 508 | font_group = Fcons (make_number (-1), font_group); |
| 509 | if (c >= 0) |
| 510 | char_table_set_range (fontset, from, to, font_group); |
| 511 | else |
| 512 | set_fontset_fallback (fontset, font_group); |
| 513 | return font_group; |
| 514 | } |
| 515 | |
| 516 | /* Return RFONT-DEF (vector) in the realized fontset FONTSET for the |
| 517 | character C. If no font is found, return Qnil if there's a |
| 518 | possibility that the default fontset or the fallback font groups |
| 519 | have a proper font, and return Qt if not. |
| 520 | |
| 521 | If a font is found but is not yet opened, open it (if FACE is not |
| 522 | NULL) or return Qnil (if FACE is NULL). |
| 523 | |
| 524 | ID is a charset-id that must be preferred, or -1 meaning no |
| 525 | preference. |
| 526 | |
| 527 | If FALLBACK, search only fallback fonts. */ |
| 528 | |
| 529 | static Lisp_Object |
| 530 | fontset_find_font (Lisp_Object fontset, int c, struct face *face, int id, |
| 531 | bool fallback) |
| 532 | { |
| 533 | Lisp_Object vec, font_group; |
| 534 | int i, charset_matched = 0, found_index; |
| 535 | struct frame *f = (FRAMEP (FONTSET_FRAME (fontset)) |
| 536 | ? XFRAME (FONTSET_FRAME (fontset)) |
| 537 | : XFRAME (selected_frame)); |
| 538 | Lisp_Object rfont_def; |
| 539 | |
| 540 | font_group = fontset_get_font_group (fontset, fallback ? -1 : c); |
| 541 | if (! CONSP (font_group)) |
| 542 | return font_group; |
| 543 | vec = XCDR (font_group); |
| 544 | if (ASIZE (vec) == 0) |
| 545 | return Qnil; |
| 546 | |
| 547 | if (ASIZE (vec) > 1) |
| 548 | { |
| 549 | if (XINT (XCAR (font_group)) != charset_ordered_list_tick) |
| 550 | /* We have just created the font-group, |
| 551 | or the charset priorities were changed. */ |
| 552 | reorder_font_vector (font_group, face->ascii_face->font); |
| 553 | if (id >= 0) |
| 554 | /* Find a spec matching with the charset ID to try at |
| 555 | first. */ |
| 556 | for (i = 0; i < ASIZE (vec); i++) |
| 557 | { |
| 558 | Lisp_Object repertory; |
| 559 | |
| 560 | rfont_def = AREF (vec, i); |
| 561 | if (NILP (rfont_def)) |
| 562 | break; |
| 563 | repertory = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def)); |
| 564 | |
| 565 | if (XINT (repertory) == id) |
| 566 | { |
| 567 | charset_matched = i; |
| 568 | break; |
| 569 | } |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | /* Find the first available font in the vector of RFONT-DEF. */ |
| 574 | for (i = 0; i < ASIZE (vec); i++) |
| 575 | { |
| 576 | Lisp_Object font_def; |
| 577 | Lisp_Object font_entity, font_object; |
| 578 | |
| 579 | found_index = i; |
| 580 | if (i == 0) |
| 581 | { |
| 582 | if (charset_matched > 0) |
| 583 | { |
| 584 | /* Try the element matching with the charset ID at first. */ |
| 585 | found_index = charset_matched; |
| 586 | /* Make this negative so that we don't come here in the |
| 587 | next loop. */ |
| 588 | charset_matched = - charset_matched; |
| 589 | /* We must try the first element in the next loop. */ |
| 590 | i--; |
| 591 | } |
| 592 | } |
| 593 | else if (i == - charset_matched) |
| 594 | { |
| 595 | /* We have already tried this element and the followings |
| 596 | that have the same font specifications in the first |
| 597 | iteration. So, skip them all. */ |
| 598 | rfont_def = AREF (vec, i); |
| 599 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 600 | for (; i + 1 < ASIZE (vec); i++) |
| 601 | { |
| 602 | rfont_def = AREF (vec, i + 1); |
| 603 | if (NILP (rfont_def)) |
| 604 | break; |
| 605 | if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def)) |
| 606 | break; |
| 607 | } |
| 608 | continue; |
| 609 | } |
| 610 | |
| 611 | rfont_def = AREF (vec, found_index); |
| 612 | if (NILP (rfont_def)) |
| 613 | { |
| 614 | if (i < 0) |
| 615 | continue; |
| 616 | /* This is a sign of not to try the other fonts. */ |
| 617 | return Qt; |
| 618 | } |
| 619 | if (INTEGERP (RFONT_DEF_FACE (rfont_def)) |
| 620 | && XINT (RFONT_DEF_FACE (rfont_def)) < 0) |
| 621 | /* We couldn't open this font last time. */ |
| 622 | continue; |
| 623 | |
| 624 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 625 | if (NILP (font_object)) |
| 626 | { |
| 627 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 628 | |
| 629 | if (! face) |
| 630 | /* We have not yet opened the font. */ |
| 631 | return Qnil; |
| 632 | /* Find a font best-matching with the spec without checking |
| 633 | the support of the character C. That checking is costly, |
| 634 | and even without the checking, the found font supports C |
| 635 | in high possibility. */ |
| 636 | font_entity = font_find_for_lface (f, face->lface, |
| 637 | FONT_DEF_SPEC (font_def), -1); |
| 638 | if (NILP (font_entity)) |
| 639 | { |
| 640 | /* Record that no font matches the spec. */ |
| 641 | RFONT_DEF_SET_FACE (rfont_def, -1); |
| 642 | continue; |
| 643 | } |
| 644 | font_object = font_open_for_lface (f, font_entity, face->lface, |
| 645 | FONT_DEF_SPEC (font_def)); |
| 646 | if (NILP (font_object)) |
| 647 | { |
| 648 | /* Something strange happened, perhaps because of a |
| 649 | Font-backend problem. Too avoid crashing, record |
| 650 | that this spec is unusable. It may be better to find |
| 651 | another font of the same spec, but currently we don't |
| 652 | have such an API. */ |
| 653 | RFONT_DEF_SET_FACE (rfont_def, -1); |
| 654 | continue; |
| 655 | } |
| 656 | RFONT_DEF_SET_OBJECT (rfont_def, font_object); |
| 657 | } |
| 658 | |
| 659 | if (font_has_char (f, font_object, c)) |
| 660 | goto found; |
| 661 | |
| 662 | /* Find a font already opened, matching with the current spec, |
| 663 | and supporting C. */ |
| 664 | font_def = RFONT_DEF_FONT_DEF (rfont_def); |
| 665 | for (; found_index + 1 < ASIZE (vec); found_index++) |
| 666 | { |
| 667 | rfont_def = AREF (vec, found_index + 1); |
| 668 | if (NILP (rfont_def)) |
| 669 | break; |
| 670 | if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def)) |
| 671 | break; |
| 672 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 673 | if (! NILP (font_object) && font_has_char (f, font_object, c)) |
| 674 | { |
| 675 | found_index++; |
| 676 | goto found; |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | /* Find a font-entity with the current spec and supporting C. */ |
| 681 | font_entity = font_find_for_lface (f, face->lface, |
| 682 | FONT_DEF_SPEC (font_def), c); |
| 683 | if (! NILP (font_entity)) |
| 684 | { |
| 685 | /* We found a font. Open it and insert a new element for |
| 686 | that font in VEC. */ |
| 687 | Lisp_Object new_vec; |
| 688 | int j; |
| 689 | |
| 690 | font_object = font_open_for_lface (f, font_entity, face->lface, |
| 691 | Qnil); |
| 692 | if (NILP (font_object)) |
| 693 | continue; |
| 694 | RFONT_DEF_NEW (rfont_def, font_def); |
| 695 | RFONT_DEF_SET_OBJECT (rfont_def, font_object); |
| 696 | RFONT_DEF_SET_SCORE (rfont_def, RFONT_DEF_SCORE (rfont_def)); |
| 697 | new_vec = Fmake_vector (make_number (ASIZE (vec) + 1), Qnil); |
| 698 | found_index++; |
| 699 | for (j = 0; j < found_index; j++) |
| 700 | ASET (new_vec, j, AREF (vec, j)); |
| 701 | ASET (new_vec, j, rfont_def); |
| 702 | for (j++; j < ASIZE (new_vec); j++) |
| 703 | ASET (new_vec, j, AREF (vec, j - 1)); |
| 704 | XSETCDR (font_group, new_vec); |
| 705 | vec = new_vec; |
| 706 | goto found; |
| 707 | } |
| 708 | if (i >= 0) |
| 709 | i = found_index; |
| 710 | } |
| 711 | |
| 712 | FONTSET_SET (fontset, make_number (c), make_number (0)); |
| 713 | return Qnil; |
| 714 | |
| 715 | found: |
| 716 | if (fallback && found_index > 0) |
| 717 | { |
| 718 | /* The order of fonts in the fallback font-group is not that |
| 719 | important, and it is better to move the found font to the |
| 720 | first of the group so that the next try will find it |
| 721 | quickly. */ |
| 722 | for (i = found_index; i > 0; i--) |
| 723 | ASET (vec, i, AREF (vec, i - 1)); |
| 724 | ASET (vec, 0, rfont_def); |
| 725 | } |
| 726 | return rfont_def; |
| 727 | } |
| 728 | |
| 729 | |
| 730 | static Lisp_Object |
| 731 | fontset_font (Lisp_Object fontset, int c, struct face *face, int id) |
| 732 | { |
| 733 | Lisp_Object rfont_def, default_rfont_def IF_LINT (= Qnil); |
| 734 | Lisp_Object base_fontset; |
| 735 | |
| 736 | /* Try a font-group of FONTSET. */ |
| 737 | FONT_DEFERRED_LOG ("current fontset: font for", make_number (c), Qnil); |
| 738 | rfont_def = fontset_find_font (fontset, c, face, id, 0); |
| 739 | if (VECTORP (rfont_def)) |
| 740 | return rfont_def; |
| 741 | if (NILP (rfont_def)) |
| 742 | FONTSET_SET (fontset, make_number (c), make_number (0)); |
| 743 | |
| 744 | /* Try a font-group of the default fontset. */ |
| 745 | base_fontset = FONTSET_BASE (fontset); |
| 746 | if (! EQ (base_fontset, Vdefault_fontset)) |
| 747 | { |
| 748 | if (NILP (FONTSET_DEFAULT (fontset))) |
| 749 | set_fontset_default |
| 750 | (fontset, |
| 751 | make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset)); |
| 752 | FONT_DEFERRED_LOG ("default fontset: font for", make_number (c), Qnil); |
| 753 | default_rfont_def |
| 754 | = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 0); |
| 755 | if (VECTORP (default_rfont_def)) |
| 756 | return default_rfont_def; |
| 757 | if (NILP (default_rfont_def)) |
| 758 | FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c), |
| 759 | make_number (0)); |
| 760 | } |
| 761 | |
| 762 | /* Try a fallback font-group of FONTSET. */ |
| 763 | if (! EQ (rfont_def, Qt)) |
| 764 | { |
| 765 | FONT_DEFERRED_LOG ("current fallback: font for", make_number (c), Qnil); |
| 766 | rfont_def = fontset_find_font (fontset, c, face, id, 1); |
| 767 | if (VECTORP (rfont_def)) |
| 768 | return rfont_def; |
| 769 | /* Remember that FONTSET has no font for C. */ |
| 770 | FONTSET_SET (fontset, make_number (c), Qt); |
| 771 | } |
| 772 | |
| 773 | /* Try a fallback font-group of the default fontset. */ |
| 774 | if (! EQ (base_fontset, Vdefault_fontset) |
| 775 | && ! EQ (default_rfont_def, Qt)) |
| 776 | { |
| 777 | FONT_DEFERRED_LOG ("default fallback: font for", make_number (c), Qnil); |
| 778 | rfont_def = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 1); |
| 779 | if (VECTORP (rfont_def)) |
| 780 | return rfont_def; |
| 781 | /* Remember that the default fontset has no font for C. */ |
| 782 | FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c), Qt); |
| 783 | } |
| 784 | |
| 785 | return Qnil; |
| 786 | } |
| 787 | |
| 788 | /* Return a newly created fontset with NAME. If BASE is nil, make a |
| 789 | base fontset. Otherwise make a realized fontset whose base is |
| 790 | BASE. */ |
| 791 | |
| 792 | static Lisp_Object |
| 793 | make_fontset (Lisp_Object frame, Lisp_Object name, Lisp_Object base) |
| 794 | { |
| 795 | Lisp_Object fontset; |
| 796 | int size = ASIZE (Vfontset_table); |
| 797 | int id = next_fontset_id; |
| 798 | |
| 799 | /* Find a free slot in Vfontset_table. Usually, next_fontset_id is |
| 800 | the next available fontset ID. So it is expected that this loop |
| 801 | terminates quickly. In addition, as the last element of |
| 802 | Vfontset_table is always nil, we don't have to check the range of |
| 803 | id. */ |
| 804 | while (!NILP (AREF (Vfontset_table, id))) id++; |
| 805 | |
| 806 | if (id + 1 == size) |
| 807 | Vfontset_table = larger_vector (Vfontset_table, 1, -1); |
| 808 | |
| 809 | fontset = Fmake_char_table (Qfontset, Qnil); |
| 810 | |
| 811 | set_fontset_id (fontset, make_number (id)); |
| 812 | if (NILP (base)) |
| 813 | set_fontset_name (fontset, name); |
| 814 | else |
| 815 | { |
| 816 | set_fontset_name (fontset, Qnil); |
| 817 | set_fontset_frame (fontset, frame); |
| 818 | set_fontset_base (fontset, base); |
| 819 | } |
| 820 | |
| 821 | ASET (Vfontset_table, id, fontset); |
| 822 | next_fontset_id = id + 1; |
| 823 | return fontset; |
| 824 | } |
| 825 | |
| 826 | \f |
| 827 | /********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/ |
| 828 | |
| 829 | /* Return the name of the fontset who has ID. */ |
| 830 | |
| 831 | Lisp_Object |
| 832 | fontset_name (int id) |
| 833 | { |
| 834 | Lisp_Object fontset; |
| 835 | |
| 836 | fontset = FONTSET_FROM_ID (id); |
| 837 | return FONTSET_NAME (fontset); |
| 838 | } |
| 839 | |
| 840 | |
| 841 | /* Return the ASCII font name of the fontset who has ID. */ |
| 842 | |
| 843 | Lisp_Object |
| 844 | fontset_ascii (int id) |
| 845 | { |
| 846 | Lisp_Object fontset, elt; |
| 847 | |
| 848 | fontset= FONTSET_FROM_ID (id); |
| 849 | elt = FONTSET_ASCII (fontset); |
| 850 | if (CONSP (elt)) |
| 851 | elt = XCAR (elt); |
| 852 | return elt; |
| 853 | } |
| 854 | |
| 855 | static void |
| 856 | free_realized_fontset (struct frame *f, Lisp_Object fontset) |
| 857 | { |
| 858 | #if 0 |
| 859 | Lisp_Object tail; |
| 860 | |
| 861 | if (0) |
| 862 | for (tail = FONTSET_OBJLIST (fontset); CONSP (tail); tail = XCDR (tail)) |
| 863 | { |
| 864 | eassert (FONT_OBJECT_P (XCAR (tail))); |
| 865 | font_close_object (f, XCAR (tail)); |
| 866 | } |
| 867 | #endif |
| 868 | } |
| 869 | |
| 870 | /* Free fontset of FACE defined on frame F. Called from |
| 871 | free_realized_face. */ |
| 872 | |
| 873 | void |
| 874 | free_face_fontset (struct frame *f, struct face *face) |
| 875 | { |
| 876 | Lisp_Object fontset; |
| 877 | |
| 878 | fontset = FONTSET_FROM_ID (face->fontset); |
| 879 | if (NILP (fontset)) |
| 880 | return; |
| 881 | eassert (! BASE_FONTSET_P (fontset)); |
| 882 | eassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 883 | free_realized_fontset (f, fontset); |
| 884 | ASET (Vfontset_table, face->fontset, Qnil); |
| 885 | if (face->fontset < next_fontset_id) |
| 886 | next_fontset_id = face->fontset; |
| 887 | if (! NILP (FONTSET_DEFAULT (fontset))) |
| 888 | { |
| 889 | int id = XINT (FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 890 | |
| 891 | fontset = AREF (Vfontset_table, id); |
| 892 | eassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset)); |
| 893 | eassert (f == XFRAME (FONTSET_FRAME (fontset))); |
| 894 | free_realized_fontset (f, fontset); |
| 895 | ASET (Vfontset_table, id, Qnil); |
| 896 | if (id < next_fontset_id) |
| 897 | next_fontset_id = face->fontset; |
| 898 | } |
| 899 | face->fontset = -1; |
| 900 | } |
| 901 | |
| 902 | |
| 903 | #if 0 |
| 904 | /* Return true if FACE is suitable for displaying character C. |
| 905 | Called from the macro FACE_SUITABLE_FOR_CHAR_P |
| 906 | when C is not an ASCII character. */ |
| 907 | |
| 908 | bool |
| 909 | face_suitable_for_char_p (struct face *face, int c) |
| 910 | { |
| 911 | Lisp_Object fontset, rfont_def; |
| 912 | |
| 913 | fontset = FONTSET_FROM_ID (face->fontset); |
| 914 | rfont_def = fontset_font (fontset, c, NULL, -1); |
| 915 | return (VECTORP (rfont_def) |
| 916 | && INTEGERP (RFONT_DEF_FACE (rfont_def)) |
| 917 | && face->id == XINT (RFONT_DEF_FACE (rfont_def))); |
| 918 | } |
| 919 | #endif |
| 920 | |
| 921 | |
| 922 | /* Return ID of face suitable for displaying character C on frame F. |
| 923 | FACE must be realized for ASCII characters in advance. Called from |
| 924 | the macro FACE_FOR_CHAR. */ |
| 925 | |
| 926 | int |
| 927 | face_for_char (struct frame *f, struct face *face, int c, int pos, Lisp_Object object) |
| 928 | { |
| 929 | Lisp_Object fontset, rfont_def, charset; |
| 930 | int face_id; |
| 931 | int id; |
| 932 | |
| 933 | /* If face->fontset is negative (that happens when no font is found |
| 934 | for face), just return face->ascii_face because we can't do |
| 935 | anything. Perhaps, we should fix the callers to assure |
| 936 | that face->fontset is always valid. */ |
| 937 | if (ASCII_CHAR_P (c) || face->fontset < 0) |
| 938 | return face->ascii_face->id; |
| 939 | |
| 940 | #ifdef HAVE_NS |
| 941 | if (face->font) |
| 942 | { |
| 943 | /* Fonts often have characters in other scripts, like symbol, even if they |
| 944 | don't match script: symbol. So check if the character is present |
| 945 | in the current face first. Only enable for NS for now, but should |
| 946 | perhaps be general? */ |
| 947 | Lisp_Object font_object; |
| 948 | XSETFONT (font_object, face->font); |
| 949 | if (font_has_char (f, font_object, c)) return face->id; |
| 950 | } |
| 951 | #endif |
| 952 | |
| 953 | eassert (fontset_id_valid_p (face->fontset)); |
| 954 | fontset = FONTSET_FROM_ID (face->fontset); |
| 955 | eassert (!BASE_FONTSET_P (fontset)); |
| 956 | |
| 957 | if (pos < 0) |
| 958 | { |
| 959 | id = -1; |
| 960 | charset = Qnil; |
| 961 | } |
| 962 | else |
| 963 | { |
| 964 | charset = Fget_char_property (make_number (pos), Qcharset, object); |
| 965 | if (CHARSETP (charset)) |
| 966 | { |
| 967 | Lisp_Object val; |
| 968 | |
| 969 | val = assq_no_quit (charset, Vfont_encoding_charset_alist); |
| 970 | if (CONSP (val) && CHARSETP (XCDR (val))) |
| 971 | charset = XCDR (val); |
| 972 | id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 973 | } |
| 974 | else |
| 975 | id = -1; |
| 976 | } |
| 977 | |
| 978 | rfont_def = fontset_font (fontset, c, face, id); |
| 979 | if (VECTORP (rfont_def)) |
| 980 | { |
| 981 | if (INTEGERP (RFONT_DEF_FACE (rfont_def))) |
| 982 | face_id = XINT (RFONT_DEF_FACE (rfont_def)); |
| 983 | else |
| 984 | { |
| 985 | Lisp_Object font_object; |
| 986 | |
| 987 | font_object = RFONT_DEF_OBJECT (rfont_def); |
| 988 | face_id = face_for_font (f, font_object, face); |
| 989 | RFONT_DEF_SET_FACE (rfont_def, face_id); |
| 990 | } |
| 991 | } |
| 992 | else |
| 993 | { |
| 994 | if (INTEGERP (FONTSET_NOFONT_FACE (fontset))) |
| 995 | face_id = XINT (FONTSET_NOFONT_FACE (fontset)); |
| 996 | else |
| 997 | { |
| 998 | face_id = face_for_font (f, Qnil, face); |
| 999 | set_fontset_nofont_face (fontset, make_number (face_id)); |
| 1000 | } |
| 1001 | } |
| 1002 | eassert (face_id >= 0); |
| 1003 | return face_id; |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | Lisp_Object |
| 1008 | font_for_char (struct face *face, int c, int pos, Lisp_Object object) |
| 1009 | { |
| 1010 | Lisp_Object fontset, rfont_def, charset; |
| 1011 | int id; |
| 1012 | |
| 1013 | if (ASCII_CHAR_P (c)) |
| 1014 | { |
| 1015 | Lisp_Object font_object; |
| 1016 | |
| 1017 | XSETFONT (font_object, face->ascii_face->font); |
| 1018 | return font_object; |
| 1019 | } |
| 1020 | |
| 1021 | eassert (fontset_id_valid_p (face->fontset)); |
| 1022 | fontset = FONTSET_FROM_ID (face->fontset); |
| 1023 | eassert (!BASE_FONTSET_P (fontset)); |
| 1024 | if (pos < 0) |
| 1025 | { |
| 1026 | id = -1; |
| 1027 | charset = Qnil; |
| 1028 | } |
| 1029 | else |
| 1030 | { |
| 1031 | charset = Fget_char_property (make_number (pos), Qcharset, object); |
| 1032 | if (CHARSETP (charset)) |
| 1033 | { |
| 1034 | Lisp_Object val; |
| 1035 | |
| 1036 | val = assq_no_quit (charset, Vfont_encoding_charset_alist); |
| 1037 | if (CONSP (val) && CHARSETP (XCDR (val))) |
| 1038 | charset = XCDR (val); |
| 1039 | id = XINT (CHARSET_SYMBOL_ID (charset)); |
| 1040 | } |
| 1041 | else |
| 1042 | id = -1; |
| 1043 | } |
| 1044 | |
| 1045 | rfont_def = fontset_font (fontset, c, face, id); |
| 1046 | return (VECTORP (rfont_def) |
| 1047 | ? RFONT_DEF_OBJECT (rfont_def) |
| 1048 | : Qnil); |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | /* Make a realized fontset for ASCII face FACE on frame F from the |
| 1053 | base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the |
| 1054 | default fontset as the base. Value is the id of the new fontset. |
| 1055 | Called from realize_x_face. */ |
| 1056 | |
| 1057 | int |
| 1058 | make_fontset_for_ascii_face (struct frame *f, int base_fontset_id, struct face *face) |
| 1059 | { |
| 1060 | Lisp_Object base_fontset, fontset, frame; |
| 1061 | |
| 1062 | XSETFRAME (frame, f); |
| 1063 | if (base_fontset_id >= 0) |
| 1064 | { |
| 1065 | base_fontset = FONTSET_FROM_ID (base_fontset_id); |
| 1066 | if (!BASE_FONTSET_P (base_fontset)) |
| 1067 | base_fontset = FONTSET_BASE (base_fontset); |
| 1068 | eassert (BASE_FONTSET_P (base_fontset)); |
| 1069 | } |
| 1070 | else |
| 1071 | base_fontset = Vdefault_fontset; |
| 1072 | |
| 1073 | fontset = make_fontset (frame, Qnil, base_fontset); |
| 1074 | return XINT (FONTSET_ID (fontset)); |
| 1075 | } |
| 1076 | |
| 1077 | \f |
| 1078 | |
| 1079 | /* Cache data used by fontset_pattern_regexp. The car part is a |
| 1080 | pattern string containing at least one wild card, the cdr part is |
| 1081 | the corresponding regular expression. */ |
| 1082 | static Lisp_Object Vcached_fontset_data; |
| 1083 | |
| 1084 | #define CACHED_FONTSET_NAME SSDATA (XCAR (Vcached_fontset_data)) |
| 1085 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) |
| 1086 | |
| 1087 | /* If fontset name PATTERN contains any wild card, return regular |
| 1088 | expression corresponding to PATTERN. */ |
| 1089 | |
| 1090 | static Lisp_Object |
| 1091 | fontset_pattern_regexp (Lisp_Object pattern) |
| 1092 | { |
| 1093 | if (!strchr (SSDATA (pattern), '*') |
| 1094 | && !strchr (SSDATA (pattern), '?')) |
| 1095 | /* PATTERN does not contain any wild cards. */ |
| 1096 | return Qnil; |
| 1097 | |
| 1098 | if (!CONSP (Vcached_fontset_data) |
| 1099 | || strcmp (SSDATA (pattern), CACHED_FONTSET_NAME)) |
| 1100 | { |
| 1101 | /* We must at first update the cached data. */ |
| 1102 | unsigned char *regex, *p0, *p1; |
| 1103 | int ndashes = 0, nstars = 0, nescs = 0; |
| 1104 | |
| 1105 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1106 | { |
| 1107 | if (*p0 == '-') |
| 1108 | ndashes++; |
| 1109 | else if (*p0 == '*') |
| 1110 | nstars++; |
| 1111 | else if (*p0 == '[' |
| 1112 | || *p0 == '.' || *p0 == '\\' |
| 1113 | || *p0 == '+' || *p0 == '^' |
| 1114 | || *p0 == '$') |
| 1115 | nescs++; |
| 1116 | } |
| 1117 | |
| 1118 | /* If PATTERN is not full XLFD we convert "*" to ".*". Otherwise |
| 1119 | we convert "*" to "[^-]*" which is much faster in regular |
| 1120 | expression matching. */ |
| 1121 | if (ndashes < 14) |
| 1122 | p1 = regex = alloca (SBYTES (pattern) + 2 * nstars + 2 * nescs + 1); |
| 1123 | else |
| 1124 | p1 = regex = alloca (SBYTES (pattern) + 5 * nstars + 2 * nescs + 1); |
| 1125 | |
| 1126 | *p1++ = '^'; |
| 1127 | for (p0 = SDATA (pattern); *p0; p0++) |
| 1128 | { |
| 1129 | if (*p0 == '*') |
| 1130 | { |
| 1131 | if (ndashes < 14) |
| 1132 | *p1++ = '.'; |
| 1133 | else |
| 1134 | *p1++ = '[', *p1++ = '^', *p1++ = '-', *p1++ = ']'; |
| 1135 | *p1++ = '*'; |
| 1136 | } |
| 1137 | else if (*p0 == '?') |
| 1138 | *p1++ = '.'; |
| 1139 | else if (*p0 == '[' |
| 1140 | || *p0 == '.' || *p0 == '\\' |
| 1141 | || *p0 == '+' || *p0 == '^' |
| 1142 | || *p0 == '$') |
| 1143 | *p1++ = '\\', *p1++ = *p0; |
| 1144 | else |
| 1145 | *p1++ = *p0; |
| 1146 | } |
| 1147 | *p1++ = '$'; |
| 1148 | *p1++ = 0; |
| 1149 | |
| 1150 | Vcached_fontset_data = Fcons (build_string (SSDATA (pattern)), |
| 1151 | build_string ((char *) regex)); |
| 1152 | } |
| 1153 | |
| 1154 | return CACHED_FONTSET_REGEX; |
| 1155 | } |
| 1156 | |
| 1157 | /* Return ID of the base fontset named NAME. If there's no such |
| 1158 | fontset, return -1. NAME_PATTERN specifies how to treat NAME as this: |
| 1159 | 0: pattern containing '*' and '?' as wildcards |
| 1160 | 1: regular expression |
| 1161 | 2: literal fontset name |
| 1162 | */ |
| 1163 | |
| 1164 | int |
| 1165 | fs_query_fontset (Lisp_Object name, int name_pattern) |
| 1166 | { |
| 1167 | Lisp_Object tem; |
| 1168 | int i; |
| 1169 | |
| 1170 | name = Fdowncase (name); |
| 1171 | if (name_pattern != 1) |
| 1172 | { |
| 1173 | tem = Frassoc (name, Vfontset_alias_alist); |
| 1174 | if (NILP (tem)) |
| 1175 | tem = Fassoc (name, Vfontset_alias_alist); |
| 1176 | if (CONSP (tem) && STRINGP (XCAR (tem))) |
| 1177 | name = XCAR (tem); |
| 1178 | else if (name_pattern == 0) |
| 1179 | { |
| 1180 | tem = fontset_pattern_regexp (name); |
| 1181 | if (STRINGP (tem)) |
| 1182 | { |
| 1183 | name = tem; |
| 1184 | name_pattern = 1; |
| 1185 | } |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 1190 | { |
| 1191 | Lisp_Object fontset, this_name; |
| 1192 | |
| 1193 | fontset = FONTSET_FROM_ID (i); |
| 1194 | if (NILP (fontset) |
| 1195 | || !BASE_FONTSET_P (fontset)) |
| 1196 | continue; |
| 1197 | |
| 1198 | this_name = FONTSET_NAME (fontset); |
| 1199 | if (name_pattern == 1 |
| 1200 | ? fast_string_match_ignore_case (name, this_name) >= 0 |
| 1201 | : !xstrcasecmp (SSDATA (name), SSDATA (this_name))) |
| 1202 | return i; |
| 1203 | } |
| 1204 | return -1; |
| 1205 | } |
| 1206 | |
| 1207 | |
| 1208 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
| 1209 | doc: /* Return the name of a fontset that matches PATTERN. |
| 1210 | The value is nil if there is no matching fontset. |
| 1211 | PATTERN can contain `*' or `?' as a wildcard |
| 1212 | just as X font name matching algorithm allows. |
| 1213 | If REGEXPP is non-nil, PATTERN is a regular expression. */) |
| 1214 | (Lisp_Object pattern, Lisp_Object regexpp) |
| 1215 | { |
| 1216 | Lisp_Object fontset; |
| 1217 | int id; |
| 1218 | |
| 1219 | check_window_system (NULL); |
| 1220 | |
| 1221 | CHECK_STRING (pattern); |
| 1222 | |
| 1223 | if (SCHARS (pattern) == 0) |
| 1224 | return Qnil; |
| 1225 | |
| 1226 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
| 1227 | if (id < 0) |
| 1228 | return Qnil; |
| 1229 | |
| 1230 | fontset = FONTSET_FROM_ID (id); |
| 1231 | return FONTSET_NAME (fontset); |
| 1232 | } |
| 1233 | |
| 1234 | /* Return a list of base fontset names matching PATTERN on frame F. */ |
| 1235 | |
| 1236 | Lisp_Object |
| 1237 | list_fontsets (struct frame *f, Lisp_Object pattern, int size) |
| 1238 | { |
| 1239 | Lisp_Object frame, regexp, val; |
| 1240 | int id; |
| 1241 | |
| 1242 | XSETFRAME (frame, f); |
| 1243 | |
| 1244 | regexp = fontset_pattern_regexp (pattern); |
| 1245 | val = Qnil; |
| 1246 | |
| 1247 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1248 | { |
| 1249 | Lisp_Object fontset, name; |
| 1250 | |
| 1251 | fontset = FONTSET_FROM_ID (id); |
| 1252 | if (NILP (fontset) |
| 1253 | || !BASE_FONTSET_P (fontset) |
| 1254 | || !EQ (frame, FONTSET_FRAME (fontset))) |
| 1255 | continue; |
| 1256 | name = FONTSET_NAME (fontset); |
| 1257 | |
| 1258 | if (STRINGP (regexp) |
| 1259 | ? (fast_string_match (regexp, name) < 0) |
| 1260 | : strcmp (SSDATA (pattern), SSDATA (name))) |
| 1261 | continue; |
| 1262 | |
| 1263 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
| 1264 | } |
| 1265 | |
| 1266 | return val; |
| 1267 | } |
| 1268 | |
| 1269 | |
| 1270 | /* Free all realized fontsets whose base fontset is BASE. */ |
| 1271 | |
| 1272 | static void |
| 1273 | free_realized_fontsets (Lisp_Object base) |
| 1274 | { |
| 1275 | int id; |
| 1276 | |
| 1277 | #if 0 |
| 1278 | /* For the moment, this doesn't work because free_realized_face |
| 1279 | doesn't remove FACE from a cache. Until we find a solution, we |
| 1280 | suppress this code, and simply use Fclear_face_cache even though |
| 1281 | that is not efficient. */ |
| 1282 | block_input (); |
| 1283 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1284 | { |
| 1285 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1286 | |
| 1287 | if (EQ (FONTSET_BASE (this), base)) |
| 1288 | { |
| 1289 | Lisp_Object tail; |
| 1290 | |
| 1291 | for (tail = FONTSET_FACE_ALIST (this); CONSP (tail); |
| 1292 | tail = XCDR (tail)) |
| 1293 | { |
| 1294 | struct frame *f = XFRAME (FONTSET_FRAME (this)); |
| 1295 | int face_id = XINT (XCDR (XCAR (tail))); |
| 1296 | struct face *face = FACE_FROM_ID (f, face_id); |
| 1297 | |
| 1298 | /* Face THIS itself is also freed by the following call. */ |
| 1299 | free_realized_face (f, face); |
| 1300 | } |
| 1301 | } |
| 1302 | } |
| 1303 | unblock_input (); |
| 1304 | #else /* not 0 */ |
| 1305 | /* But, we don't have to call Fclear_face_cache if no fontset has |
| 1306 | been realized from BASE. */ |
| 1307 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
| 1308 | { |
| 1309 | Lisp_Object this = AREF (Vfontset_table, id); |
| 1310 | |
| 1311 | if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base)) |
| 1312 | { |
| 1313 | Fclear_face_cache (Qt); |
| 1314 | break; |
| 1315 | } |
| 1316 | } |
| 1317 | #endif /* not 0 */ |
| 1318 | } |
| 1319 | |
| 1320 | |
| 1321 | /* Check validity of NAME as a fontset name and return the |
| 1322 | corresponding fontset. If not valid, signal an error. |
| 1323 | |
| 1324 | If NAME is t, return Vdefault_fontset. If NAME is nil, return the |
| 1325 | fontset of *FRAME. |
| 1326 | |
| 1327 | Set *FRAME to the actual frame. */ |
| 1328 | |
| 1329 | static Lisp_Object |
| 1330 | check_fontset_name (Lisp_Object name, Lisp_Object *frame) |
| 1331 | { |
| 1332 | int id; |
| 1333 | struct frame *f = decode_live_frame (*frame); |
| 1334 | |
| 1335 | XSETFRAME (*frame, f); |
| 1336 | |
| 1337 | if (EQ (name, Qt)) |
| 1338 | return Vdefault_fontset; |
| 1339 | if (NILP (name)) |
| 1340 | id = FRAME_FONTSET (f); |
| 1341 | else |
| 1342 | { |
| 1343 | CHECK_STRING (name); |
| 1344 | /* First try NAME as literal. */ |
| 1345 | id = fs_query_fontset (name, 2); |
| 1346 | if (id < 0) |
| 1347 | /* For backward compatibility, try again NAME as pattern. */ |
| 1348 | id = fs_query_fontset (name, 0); |
| 1349 | if (id < 0) |
| 1350 | error ("Fontset `%s' does not exist", SDATA (name)); |
| 1351 | } |
| 1352 | return FONTSET_FROM_ID (id); |
| 1353 | } |
| 1354 | |
| 1355 | static void |
| 1356 | accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val) |
| 1357 | { |
| 1358 | if (EQ (XCAR (arg), val)) |
| 1359 | { |
| 1360 | if (CONSP (range)) |
| 1361 | XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg))); |
| 1362 | else |
| 1363 | XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg))); |
| 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | |
| 1368 | /* Callback function for map_charset_chars in Fset_fontset_font. |
| 1369 | ARG is a vector [ FONTSET FONT_DEF ADD ASCII SCRIPT_RANGE_LIST ]. |
| 1370 | |
| 1371 | In FONTSET, set FONT_DEF in a fashion specified by ADD for |
| 1372 | characters in RANGE and ranges in SCRIPT_RANGE_LIST before RANGE. |
| 1373 | The consumed ranges are popped up from SCRIPT_RANGE_LIST, and the |
| 1374 | new SCRIPT_RANGE_LIST is stored in ARG. |
| 1375 | |
| 1376 | If ASCII is nil, don't set FONT_DEF for ASCII characters. It is |
| 1377 | assured that SCRIPT_RANGE_LIST doesn't contain ASCII in that |
| 1378 | case. */ |
| 1379 | |
| 1380 | static void |
| 1381 | set_fontset_font (Lisp_Object arg, Lisp_Object range) |
| 1382 | { |
| 1383 | Lisp_Object fontset, font_def, add, ascii, script_range_list; |
| 1384 | int from = XINT (XCAR (range)), to = XINT (XCDR (range)); |
| 1385 | |
| 1386 | fontset = AREF (arg, 0); |
| 1387 | font_def = AREF (arg, 1); |
| 1388 | add = AREF (arg, 2); |
| 1389 | ascii = AREF (arg, 3); |
| 1390 | script_range_list = AREF (arg, 4); |
| 1391 | |
| 1392 | if (NILP (ascii) && from < 0x80) |
| 1393 | { |
| 1394 | if (to < 0x80) |
| 1395 | return; |
| 1396 | from = 0x80; |
| 1397 | range = Fcons (make_number (0x80), XCDR (range)); |
| 1398 | } |
| 1399 | |
| 1400 | #define SCRIPT_FROM XINT (XCAR (XCAR (script_range_list))) |
| 1401 | #define SCRIPT_TO XINT (XCDR (XCAR (script_range_list))) |
| 1402 | #define POP_SCRIPT_RANGE() script_range_list = XCDR (script_range_list) |
| 1403 | |
| 1404 | for (; CONSP (script_range_list) && SCRIPT_TO < from; POP_SCRIPT_RANGE ()) |
| 1405 | FONTSET_ADD (fontset, XCAR (script_range_list), font_def, add); |
| 1406 | if (CONSP (script_range_list)) |
| 1407 | { |
| 1408 | if (SCRIPT_FROM < from) |
| 1409 | range = Fcons (make_number (SCRIPT_FROM), XCDR (range)); |
| 1410 | while (CONSP (script_range_list) && SCRIPT_TO <= to) |
| 1411 | POP_SCRIPT_RANGE (); |
| 1412 | if (CONSP (script_range_list) && SCRIPT_FROM <= to) |
| 1413 | XSETCAR (XCAR (script_range_list), make_number (to + 1)); |
| 1414 | } |
| 1415 | |
| 1416 | FONTSET_ADD (fontset, range, font_def, add); |
| 1417 | ASET (arg, 4, script_range_list); |
| 1418 | } |
| 1419 | |
| 1420 | static void update_auto_fontset_alist (Lisp_Object, Lisp_Object); |
| 1421 | |
| 1422 | |
| 1423 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 5, 0, |
| 1424 | doc: /* |
| 1425 | Modify fontset NAME to use FONT-SPEC for TARGET characters. |
| 1426 | |
| 1427 | NAME is a fontset name string, nil for the fontset of FRAME, or t for |
| 1428 | the default fontset. |
| 1429 | |
| 1430 | TARGET may be a cons; (FROM . TO), where FROM and TO are characters. |
| 1431 | In that case, use FONT-SPEC for all characters in the range FROM and |
| 1432 | TO (inclusive). |
| 1433 | |
| 1434 | TARGET may be a script name symbol. In that case, use FONT-SPEC for |
| 1435 | all characters that belong to the script. |
| 1436 | |
| 1437 | TARGET may be a charset. In that case, use FONT-SPEC for all |
| 1438 | characters in the charset. |
| 1439 | |
| 1440 | TARGET may be nil. In that case, use FONT-SPEC for any characters for |
| 1441 | that no FONT-SPEC is specified. |
| 1442 | |
| 1443 | FONT-SPEC may one of these: |
| 1444 | * A font-spec object made by the function `font-spec' (which see). |
| 1445 | * A cons (FAMILY . REGISTRY), where FAMILY is a font family name and |
| 1446 | REGISTRY is a font registry name. FAMILY may contain foundry |
| 1447 | name, and REGISTRY may contain encoding name. |
| 1448 | * A font name string. |
| 1449 | * nil, which explicitly specifies that there's no font for TARGET. |
| 1450 | |
| 1451 | Optional 4th argument FRAME is a frame or nil for the selected frame |
| 1452 | that is concerned in the case that NAME is nil. |
| 1453 | |
| 1454 | Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC |
| 1455 | to the font specifications for TARGET previously set. If it is |
| 1456 | `prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is |
| 1457 | appended. By default, FONT-SPEC overrides the previous settings. */) |
| 1458 | (Lisp_Object name, Lisp_Object target, Lisp_Object font_spec, Lisp_Object frame, Lisp_Object add) |
| 1459 | { |
| 1460 | Lisp_Object fontset; |
| 1461 | Lisp_Object font_def, registry, family; |
| 1462 | Lisp_Object range_list; |
| 1463 | struct charset *charset = NULL; |
| 1464 | Lisp_Object fontname; |
| 1465 | bool ascii_changed = 0; |
| 1466 | |
| 1467 | fontset = check_fontset_name (name, &frame); |
| 1468 | |
| 1469 | fontname = Qnil; |
| 1470 | if (CONSP (font_spec)) |
| 1471 | { |
| 1472 | Lisp_Object spec = Ffont_spec (0, NULL); |
| 1473 | |
| 1474 | font_parse_family_registry (XCAR (font_spec), XCDR (font_spec), spec); |
| 1475 | font_spec = spec; |
| 1476 | fontname = Ffont_xlfd_name (font_spec, Qnil); |
| 1477 | } |
| 1478 | else if (STRINGP (font_spec)) |
| 1479 | { |
| 1480 | Lisp_Object args[2]; |
| 1481 | |
| 1482 | fontname = font_spec; |
| 1483 | args[0] = QCname; |
| 1484 | args[1] = font_spec; |
| 1485 | font_spec = Ffont_spec (2, args); |
| 1486 | } |
| 1487 | else if (FONT_SPEC_P (font_spec)) |
| 1488 | fontname = Ffont_xlfd_name (font_spec, Qnil); |
| 1489 | else if (! NILP (font_spec)) |
| 1490 | Fsignal (Qfont, list2 (build_string ("Invalid font-spec"), font_spec)); |
| 1491 | |
| 1492 | if (! NILP (font_spec)) |
| 1493 | { |
| 1494 | Lisp_Object encoding, repertory; |
| 1495 | |
| 1496 | family = AREF (font_spec, FONT_FAMILY_INDEX); |
| 1497 | if (! NILP (family) ) |
| 1498 | family = SYMBOL_NAME (family); |
| 1499 | registry = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1500 | if (! NILP (registry)) |
| 1501 | registry = Fdowncase (SYMBOL_NAME (registry)); |
| 1502 | encoding = find_font_encoding (concat3 (family, build_string ("-"), |
| 1503 | registry)); |
| 1504 | if (NILP (encoding)) |
| 1505 | encoding = Qascii; |
| 1506 | |
| 1507 | if (SYMBOLP (encoding)) |
| 1508 | { |
| 1509 | CHECK_CHARSET (encoding); |
| 1510 | encoding = repertory = CHARSET_SYMBOL_ID (encoding); |
| 1511 | } |
| 1512 | else |
| 1513 | { |
| 1514 | repertory = XCDR (encoding); |
| 1515 | encoding = XCAR (encoding); |
| 1516 | CHECK_CHARSET (encoding); |
| 1517 | encoding = CHARSET_SYMBOL_ID (encoding); |
| 1518 | if (! NILP (repertory) && SYMBOLP (repertory)) |
| 1519 | { |
| 1520 | CHECK_CHARSET (repertory); |
| 1521 | repertory = CHARSET_SYMBOL_ID (repertory); |
| 1522 | } |
| 1523 | } |
| 1524 | FONT_DEF_NEW (font_def, font_spec, encoding, repertory); |
| 1525 | } |
| 1526 | else |
| 1527 | font_def = Qnil; |
| 1528 | |
| 1529 | if (CHARACTERP (target)) |
| 1530 | { |
| 1531 | if (XFASTINT (target) < 0x80) |
| 1532 | error ("Can't set a font for partial ASCII range"); |
| 1533 | range_list = list1 (Fcons (target, target)); |
| 1534 | } |
| 1535 | else if (CONSP (target)) |
| 1536 | { |
| 1537 | Lisp_Object from, to; |
| 1538 | |
| 1539 | from = Fcar (target); |
| 1540 | to = Fcdr (target); |
| 1541 | CHECK_CHARACTER (from); |
| 1542 | CHECK_CHARACTER (to); |
| 1543 | if (XFASTINT (from) < 0x80) |
| 1544 | { |
| 1545 | if (XFASTINT (from) != 0 || XFASTINT (to) < 0x7F) |
| 1546 | error ("Can't set a font for partial ASCII range"); |
| 1547 | ascii_changed = 1; |
| 1548 | } |
| 1549 | range_list = list1 (target); |
| 1550 | } |
| 1551 | else if (SYMBOLP (target) && !NILP (target)) |
| 1552 | { |
| 1553 | Lisp_Object script_list; |
| 1554 | Lisp_Object val; |
| 1555 | |
| 1556 | range_list = Qnil; |
| 1557 | script_list = XCHAR_TABLE (Vchar_script_table)->extras[0]; |
| 1558 | if (! NILP (Fmemq (target, script_list))) |
| 1559 | { |
| 1560 | if (EQ (target, Qlatin)) |
| 1561 | ascii_changed = 1; |
| 1562 | val = list1 (target); |
| 1563 | map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table, |
| 1564 | val); |
| 1565 | range_list = Fnreverse (XCDR (val)); |
| 1566 | } |
| 1567 | if (CHARSETP (target)) |
| 1568 | { |
| 1569 | CHECK_CHARSET_GET_CHARSET (target, charset); |
| 1570 | if (charset->ascii_compatible_p) |
| 1571 | ascii_changed = 1; |
| 1572 | } |
| 1573 | else if (NILP (range_list)) |
| 1574 | error ("Invalid script or charset name: %s", |
| 1575 | SDATA (SYMBOL_NAME (target))); |
| 1576 | } |
| 1577 | else if (NILP (target)) |
| 1578 | range_list = list1 (Qnil); |
| 1579 | else |
| 1580 | error ("Invalid target for setting a font"); |
| 1581 | |
| 1582 | if (ascii_changed) |
| 1583 | { |
| 1584 | Lisp_Object val; |
| 1585 | |
| 1586 | if (NILP (font_spec)) |
| 1587 | error ("Can't set ASCII font to nil"); |
| 1588 | val = CHAR_TABLE_REF (fontset, 0); |
| 1589 | if (! NILP (val) && EQ (add, Qappend)) |
| 1590 | /* We are going to change just an additional font for ASCII. */ |
| 1591 | ascii_changed = 0; |
| 1592 | } |
| 1593 | |
| 1594 | if (charset) |
| 1595 | { |
| 1596 | Lisp_Object arg; |
| 1597 | |
| 1598 | arg = make_uninit_vector (5); |
| 1599 | ASET (arg, 0, fontset); |
| 1600 | ASET (arg, 1, font_def); |
| 1601 | ASET (arg, 2, add); |
| 1602 | ASET (arg, 3, ascii_changed ? Qt : Qnil); |
| 1603 | ASET (arg, 4, range_list); |
| 1604 | |
| 1605 | map_charset_chars (set_fontset_font, Qnil, arg, charset, |
| 1606 | CHARSET_MIN_CODE (charset), |
| 1607 | CHARSET_MAX_CODE (charset)); |
| 1608 | range_list = AREF (arg, 4); |
| 1609 | } |
| 1610 | for (; CONSP (range_list); range_list = XCDR (range_list)) |
| 1611 | FONTSET_ADD (fontset, XCAR (range_list), font_def, add); |
| 1612 | |
| 1613 | if (ascii_changed) |
| 1614 | { |
| 1615 | Lisp_Object tail, fr, alist; |
| 1616 | int fontset_id = XINT (FONTSET_ID (fontset)); |
| 1617 | |
| 1618 | set_fontset_ascii (fontset, fontname); |
| 1619 | name = FONTSET_NAME (fontset); |
| 1620 | FOR_EACH_FRAME (tail, fr) |
| 1621 | { |
| 1622 | struct frame *f = XFRAME (fr); |
| 1623 | Lisp_Object font_object; |
| 1624 | struct face *face; |
| 1625 | |
| 1626 | if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f)) |
| 1627 | continue; |
| 1628 | if (fontset_id != FRAME_FONTSET (f)) |
| 1629 | continue; |
| 1630 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 1631 | if (face) |
| 1632 | font_object = font_load_for_lface (f, face->lface, font_spec); |
| 1633 | else |
| 1634 | font_object = font_open_by_spec (f, font_spec); |
| 1635 | if (! NILP (font_object)) |
| 1636 | { |
| 1637 | update_auto_fontset_alist (font_object, fontset); |
| 1638 | alist = list1 (Fcons (Qfont, Fcons (name, font_object))); |
| 1639 | Fmodify_frame_parameters (fr, alist); |
| 1640 | } |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | /* Free all realized fontsets whose base is FONTSET. This way, the |
| 1645 | specified character(s) are surely redisplayed by a correct |
| 1646 | font. */ |
| 1647 | free_realized_fontsets (fontset); |
| 1648 | |
| 1649 | return Qnil; |
| 1650 | } |
| 1651 | |
| 1652 | |
| 1653 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, |
| 1654 | doc: /* Create a new fontset NAME from font information in FONTLIST. |
| 1655 | |
| 1656 | FONTLIST is an alist of scripts vs the corresponding font specification list. |
| 1657 | Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a |
| 1658 | character of SCRIPT is displayed by a font that matches one of |
| 1659 | FONT-SPEC. |
| 1660 | |
| 1661 | SCRIPT is a symbol that appears in the first extra slot of the |
| 1662 | char-table `char-script-table'. |
| 1663 | |
| 1664 | FONT-SPEC is a vector, a cons, or a string. See the documentation of |
| 1665 | `set-fontset-font' for the meaning. */) |
| 1666 | (Lisp_Object name, Lisp_Object fontlist) |
| 1667 | { |
| 1668 | Lisp_Object fontset; |
| 1669 | int id; |
| 1670 | |
| 1671 | CHECK_STRING (name); |
| 1672 | CHECK_LIST (fontlist); |
| 1673 | |
| 1674 | name = Fdowncase (name); |
| 1675 | id = fs_query_fontset (name, 0); |
| 1676 | if (id < 0) |
| 1677 | { |
| 1678 | Lisp_Object font_spec = Ffont_spec (0, NULL); |
| 1679 | Lisp_Object short_name; |
| 1680 | char xlfd[256]; |
| 1681 | int len; |
| 1682 | |
| 1683 | if (font_parse_xlfd (SSDATA (name), SBYTES (name), font_spec) < 0) |
| 1684 | error ("Fontset name must be in XLFD format"); |
| 1685 | short_name = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1686 | if (strncmp (SSDATA (SYMBOL_NAME (short_name)), "fontset-", 8) |
| 1687 | || SBYTES (SYMBOL_NAME (short_name)) < 9) |
| 1688 | error ("Registry field of fontset name must be \"fontset-*\""); |
| 1689 | Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (short_name)), |
| 1690 | Vfontset_alias_alist); |
| 1691 | ASET (font_spec, FONT_REGISTRY_INDEX, Qiso8859_1); |
| 1692 | fontset = make_fontset (Qnil, name, Qnil); |
| 1693 | len = font_unparse_xlfd (font_spec, 0, xlfd, 256); |
| 1694 | if (len < 0) |
| 1695 | error ("Invalid fontset name (perhaps too long): %s", SDATA (name)); |
| 1696 | set_fontset_ascii (fontset, make_unibyte_string (xlfd, len)); |
| 1697 | } |
| 1698 | else |
| 1699 | { |
| 1700 | fontset = FONTSET_FROM_ID (id); |
| 1701 | free_realized_fontsets (fontset); |
| 1702 | Fset_char_table_range (fontset, Qt, Qnil); |
| 1703 | } |
| 1704 | |
| 1705 | for (; CONSP (fontlist); fontlist = XCDR (fontlist)) |
| 1706 | { |
| 1707 | Lisp_Object elt, script; |
| 1708 | |
| 1709 | elt = XCAR (fontlist); |
| 1710 | script = Fcar (elt); |
| 1711 | elt = Fcdr (elt); |
| 1712 | if (CONSP (elt) && (NILP (XCDR (elt)) || CONSP (XCDR (elt)))) |
| 1713 | for (; CONSP (elt); elt = XCDR (elt)) |
| 1714 | Fset_fontset_font (name, script, XCAR (elt), Qnil, Qappend); |
| 1715 | else |
| 1716 | Fset_fontset_font (name, script, elt, Qnil, Qappend); |
| 1717 | } |
| 1718 | return name; |
| 1719 | } |
| 1720 | |
| 1721 | |
| 1722 | /* Alist of automatically created fontsets. Each element is a cons |
| 1723 | (FONT-SPEC . FONTSET-ID). */ |
| 1724 | static Lisp_Object auto_fontset_alist; |
| 1725 | |
| 1726 | /* Number of automatically created fontsets. */ |
| 1727 | static ptrdiff_t num_auto_fontsets; |
| 1728 | |
| 1729 | /* Return a fontset synthesized from FONT-OBJECT. This is called from |
| 1730 | x_new_font when FONT-OBJECT is used for the default ASCII font of a |
| 1731 | frame, and the returned fontset is used for the default fontset of |
| 1732 | that frame. The fontset specifies a font of the same registry as |
| 1733 | FONT-OBJECT for all characters in the repertory of the registry |
| 1734 | (see Vfont_encoding_alist). If the repertory is not known, the |
| 1735 | fontset specifies the font for all Latin characters assuming that a |
| 1736 | user intends to use FONT-OBJECT for Latin characters. */ |
| 1737 | |
| 1738 | int |
| 1739 | fontset_from_font (Lisp_Object font_object) |
| 1740 | { |
| 1741 | Lisp_Object font_name = font_get_name (font_object); |
| 1742 | Lisp_Object font_spec = copy_font_spec (font_object); |
| 1743 | Lisp_Object registry = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 1744 | Lisp_Object fontset_spec, alias, name, fontset; |
| 1745 | Lisp_Object val; |
| 1746 | |
| 1747 | val = assoc_no_quit (font_spec, auto_fontset_alist); |
| 1748 | if (CONSP (val)) |
| 1749 | return XINT (FONTSET_ID (XCDR (val))); |
| 1750 | if (num_auto_fontsets++ == 0) |
| 1751 | alias = intern ("fontset-startup"); |
| 1752 | else |
| 1753 | { |
| 1754 | char temp[sizeof "fontset-auto" + INT_STRLEN_BOUND (ptrdiff_t)]; |
| 1755 | |
| 1756 | sprintf (temp, "fontset-auto%"pD"d", num_auto_fontsets - 1); |
| 1757 | alias = intern (temp); |
| 1758 | } |
| 1759 | fontset_spec = copy_font_spec (font_spec); |
| 1760 | ASET (fontset_spec, FONT_REGISTRY_INDEX, alias); |
| 1761 | name = Ffont_xlfd_name (fontset_spec, Qnil); |
| 1762 | eassert (!NILP (name)); |
| 1763 | fontset = make_fontset (Qnil, name, Qnil); |
| 1764 | Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (alias)), |
| 1765 | Vfontset_alias_alist); |
| 1766 | alias = Fdowncase (AREF (font_object, FONT_NAME_INDEX)); |
| 1767 | Vfontset_alias_alist = Fcons (Fcons (name, alias), Vfontset_alias_alist); |
| 1768 | auto_fontset_alist = Fcons (Fcons (font_spec, fontset), auto_fontset_alist); |
| 1769 | font_spec = Ffont_spec (0, NULL); |
| 1770 | ASET (font_spec, FONT_REGISTRY_INDEX, registry); |
| 1771 | { |
| 1772 | Lisp_Object target = find_font_encoding (SYMBOL_NAME (registry)); |
| 1773 | |
| 1774 | if (CONSP (target)) |
| 1775 | target = XCDR (target); |
| 1776 | if (! CHARSETP (target)) |
| 1777 | target = Qlatin; |
| 1778 | Fset_fontset_font (name, target, font_spec, Qnil, Qnil); |
| 1779 | Fset_fontset_font (name, Qnil, font_spec, Qnil, Qnil); |
| 1780 | } |
| 1781 | |
| 1782 | set_fontset_ascii (fontset, font_name); |
| 1783 | |
| 1784 | return XINT (FONTSET_ID (fontset)); |
| 1785 | } |
| 1786 | |
| 1787 | |
| 1788 | /* Update auto_fontset_alist for FONTSET. When an ASCII font of |
| 1789 | FONTSET is changed, we delete an entry of FONTSET if any from |
| 1790 | auto_fontset_alist so that FONTSET is not re-used by |
| 1791 | fontset_from_font. */ |
| 1792 | |
| 1793 | static void |
| 1794 | update_auto_fontset_alist (Lisp_Object font_object, Lisp_Object fontset) |
| 1795 | { |
| 1796 | Lisp_Object prev, tail; |
| 1797 | |
| 1798 | for (prev = Qnil, tail = auto_fontset_alist; CONSP (tail); |
| 1799 | prev = tail, tail = XCDR (tail)) |
| 1800 | if (EQ (fontset, XCDR (XCAR (tail)))) |
| 1801 | { |
| 1802 | if (NILP (prev)) |
| 1803 | auto_fontset_alist = XCDR (tail); |
| 1804 | else |
| 1805 | XSETCDR (prev, XCDR (tail)); |
| 1806 | break; |
| 1807 | } |
| 1808 | } |
| 1809 | |
| 1810 | |
| 1811 | /* Return a cons (FONT-OBJECT . GLYPH-CODE). |
| 1812 | FONT-OBJECT is the font for the character at POSITION in the current |
| 1813 | buffer. This is computed from all the text properties and overlays |
| 1814 | that apply to POSITION. POSITION may be nil, in which case, |
| 1815 | FONT-SPEC is the font for displaying the character CH with the |
| 1816 | default face. |
| 1817 | |
| 1818 | GLYPH-CODE is the glyph code in the font to use for the character. |
| 1819 | |
| 1820 | If the 2nd optional arg CH is non-nil, it is a character to check |
| 1821 | the font instead of the character at POSITION. |
| 1822 | |
| 1823 | It returns nil in the following cases: |
| 1824 | |
| 1825 | (1) The window system doesn't have a font for the character (thus |
| 1826 | it is displayed by an empty box). |
| 1827 | |
| 1828 | (2) The character code is invalid. |
| 1829 | |
| 1830 | (3) If POSITION is not nil, and the current buffer is not displayed |
| 1831 | in any window. |
| 1832 | |
| 1833 | In addition, the returned font name may not take into account of |
| 1834 | such redisplay engine hooks as what used in jit-lock-mode if |
| 1835 | POSITION is currently not visible. */ |
| 1836 | |
| 1837 | |
| 1838 | DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0, |
| 1839 | doc: /* For internal use only. */) |
| 1840 | (Lisp_Object position, Lisp_Object ch) |
| 1841 | { |
| 1842 | ptrdiff_t pos, pos_byte, dummy; |
| 1843 | int face_id; |
| 1844 | int c; |
| 1845 | struct frame *f; |
| 1846 | struct face *face; |
| 1847 | |
| 1848 | if (NILP (position)) |
| 1849 | { |
| 1850 | CHECK_CHARACTER (ch); |
| 1851 | c = XINT (ch); |
| 1852 | f = XFRAME (selected_frame); |
| 1853 | face_id = lookup_basic_face (f, DEFAULT_FACE_ID); |
| 1854 | pos = -1; |
| 1855 | } |
| 1856 | else |
| 1857 | { |
| 1858 | Lisp_Object window; |
| 1859 | struct window *w; |
| 1860 | |
| 1861 | CHECK_NUMBER_COERCE_MARKER (position); |
| 1862 | if (! (BEGV <= XINT (position) && XINT (position) < ZV)) |
| 1863 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 1864 | pos = XINT (position); |
| 1865 | pos_byte = CHAR_TO_BYTE (pos); |
| 1866 | if (NILP (ch)) |
| 1867 | c = FETCH_CHAR (pos_byte); |
| 1868 | else |
| 1869 | { |
| 1870 | CHECK_NATNUM (ch); |
| 1871 | c = XINT (ch); |
| 1872 | } |
| 1873 | window = Fget_buffer_window (Fcurrent_buffer (), Qnil); |
| 1874 | if (NILP (window)) |
| 1875 | return Qnil; |
| 1876 | w = XWINDOW (window); |
| 1877 | f = XFRAME (w->frame); |
| 1878 | face_id = face_at_buffer_position (w, pos, &dummy, |
| 1879 | pos + 100, 0, -1); |
| 1880 | } |
| 1881 | if (! CHAR_VALID_P (c)) |
| 1882 | return Qnil; |
| 1883 | if (!FRAME_WINDOW_P (f)) |
| 1884 | return Qnil; |
| 1885 | face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil); |
| 1886 | face = FACE_FROM_ID (f, face_id); |
| 1887 | if (face->font) |
| 1888 | { |
| 1889 | unsigned code = face->font->driver->encode_char (face->font, c); |
| 1890 | Lisp_Object font_object; |
| 1891 | |
| 1892 | if (code == FONT_INVALID_CODE) |
| 1893 | return Qnil; |
| 1894 | XSETFONT (font_object, face->font); |
| 1895 | return Fcons (font_object, INTEGER_TO_CONS (code)); |
| 1896 | } |
| 1897 | return Qnil; |
| 1898 | } |
| 1899 | |
| 1900 | |
| 1901 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, |
| 1902 | doc: /* Return information about a fontset FONTSET on frame FRAME. |
| 1903 | |
| 1904 | FONTSET is a fontset name string, nil for the fontset of FRAME, or t |
| 1905 | for the default fontset. FRAME nil means the selected frame. |
| 1906 | |
| 1907 | The value is a char-table whose elements have this form: |
| 1908 | |
| 1909 | ((FONT OPENED-FONT ...) ...) |
| 1910 | |
| 1911 | FONT is a name of font specified for a range of characters. |
| 1912 | |
| 1913 | OPENED-FONT is a name of a font actually opened. |
| 1914 | |
| 1915 | The char-table has one extra slot. If FONTSET is not the default |
| 1916 | fontset, the value the extra slot is a char-table containing the |
| 1917 | information about the derived fonts from the default fontset. The |
| 1918 | format is the same as above. */) |
| 1919 | (Lisp_Object fontset, Lisp_Object frame) |
| 1920 | { |
| 1921 | Lisp_Object *realized[2], fontsets[2], tables[2]; |
| 1922 | Lisp_Object val, elt; |
| 1923 | int c, i, j, k; |
| 1924 | |
| 1925 | check_window_system (NULL); |
| 1926 | fontset = check_fontset_name (fontset, &frame); |
| 1927 | |
| 1928 | /* Recode fontsets realized on FRAME from the base fontset FONTSET |
| 1929 | in the table `realized'. */ |
| 1930 | realized[0] = alloca (word_size * 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] = alloca (word_size * ASIZE (Vfontset_table)); |
| 1942 | for (i = j = 0; ! NILP (realized[0][i]); i++) |
| 1943 | { |
| 1944 | elt = FONTSET_DEFAULT (realized[0][i]); |
| 1945 | if (! NILP (elt)) |
| 1946 | realized[1][j++] = elt; |
| 1947 | } |
| 1948 | realized[1][j] = Qnil; |
| 1949 | |
| 1950 | tables[0] = Fmake_char_table (Qfontset_info, Qnil); |
| 1951 | fontsets[0] = fontset; |
| 1952 | if (!EQ (fontset, Vdefault_fontset)) |
| 1953 | { |
| 1954 | tables[1] = Fmake_char_table (Qnil, Qnil); |
| 1955 | set_char_table_extras (tables[0], 0, tables[1]); |
| 1956 | fontsets[1] = Vdefault_fontset; |
| 1957 | } |
| 1958 | |
| 1959 | /* Accumulate information of the fontset in TABLE. The format of |
| 1960 | each element is ((FONT-SPEC OPENED-FONT ...) ...). */ |
| 1961 | for (k = 0; k <= 1; k++) |
| 1962 | { |
| 1963 | for (c = 0; c <= MAX_CHAR; ) |
| 1964 | { |
| 1965 | int from = c, to = MAX_5_BYTE_CHAR; |
| 1966 | |
| 1967 | if (c <= MAX_5_BYTE_CHAR) |
| 1968 | { |
| 1969 | val = char_table_ref_and_range (fontsets[k], c, &from, &to); |
| 1970 | } |
| 1971 | else |
| 1972 | { |
| 1973 | val = FONTSET_FALLBACK (fontsets[k]); |
| 1974 | to = MAX_CHAR; |
| 1975 | } |
| 1976 | if (VECTORP (val)) |
| 1977 | { |
| 1978 | Lisp_Object alist; |
| 1979 | |
| 1980 | /* At first, set ALIST to ((FONT-SPEC) ...). */ |
| 1981 | for (alist = Qnil, i = 0; i < ASIZE (val); i++) |
| 1982 | if (! NILP (AREF (val, i))) |
| 1983 | alist = Fcons (Fcons (FONT_DEF_SPEC (AREF (val, i)), Qnil), |
| 1984 | alist); |
| 1985 | alist = Fnreverse (alist); |
| 1986 | |
| 1987 | /* Then store opened font names to cdr of each elements. */ |
| 1988 | for (i = 0; ! NILP (realized[k][i]); i++) |
| 1989 | { |
| 1990 | if (c <= MAX_5_BYTE_CHAR) |
| 1991 | val = FONTSET_REF (realized[k][i], c); |
| 1992 | else |
| 1993 | val = FONTSET_FALLBACK (realized[k][i]); |
| 1994 | if (! CONSP (val) || ! VECTORP (XCDR (val))) |
| 1995 | continue; |
| 1996 | /* VAL: (int . [[FACE-ID FONT-DEF FONT-OBJECT int] ... ]) */ |
| 1997 | val = XCDR (val); |
| 1998 | for (j = 0; j < ASIZE (val); j++) |
| 1999 | { |
| 2000 | elt = AREF (val, j); |
| 2001 | if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt))) |
| 2002 | { |
| 2003 | Lisp_Object font_object = RFONT_DEF_OBJECT (elt); |
| 2004 | Lisp_Object slot, name; |
| 2005 | |
| 2006 | slot = Fassq (RFONT_DEF_SPEC (elt), alist); |
| 2007 | name = AREF (font_object, FONT_NAME_INDEX); |
| 2008 | if (NILP (Fmember (name, XCDR (slot)))) |
| 2009 | nconc2 (slot, list1 (name)); |
| 2010 | } |
| 2011 | } |
| 2012 | } |
| 2013 | |
| 2014 | /* Store ALIST in TBL for characters C..TO. */ |
| 2015 | if (c <= MAX_5_BYTE_CHAR) |
| 2016 | char_table_set_range (tables[k], c, to, alist); |
| 2017 | else |
| 2018 | set_char_table_defalt (tables[k], alist); |
| 2019 | |
| 2020 | /* At last, change each elements to font names. */ |
| 2021 | for (; CONSP (alist); alist = XCDR (alist)) |
| 2022 | { |
| 2023 | elt = XCAR (alist); |
| 2024 | XSETCAR (elt, Ffont_xlfd_name (XCAR (elt), Qnil)); |
| 2025 | } |
| 2026 | } |
| 2027 | c = to + 1; |
| 2028 | } |
| 2029 | if (EQ (fontset, Vdefault_fontset)) |
| 2030 | break; |
| 2031 | } |
| 2032 | |
| 2033 | return tables[0]; |
| 2034 | } |
| 2035 | |
| 2036 | |
| 2037 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 3, 0, |
| 2038 | doc: /* Return a font name pattern for character CH in fontset NAME. |
| 2039 | If NAME is t, find a pattern in the default fontset. |
| 2040 | If NAME is nil, find a pattern in the fontset of the selected frame. |
| 2041 | |
| 2042 | The value has the form (FAMILY . REGISTRY), where FAMILY is a font |
| 2043 | family name and REGISTRY is a font registry name. This is actually |
| 2044 | the first font name pattern for CH in the fontset or in the default |
| 2045 | fontset. |
| 2046 | |
| 2047 | If the 2nd optional arg ALL is non-nil, return a list of all font name |
| 2048 | patterns. */) |
| 2049 | (Lisp_Object name, Lisp_Object ch, Lisp_Object all) |
| 2050 | { |
| 2051 | int c; |
| 2052 | Lisp_Object fontset, elt, list, repertory, val; |
| 2053 | int i, j; |
| 2054 | Lisp_Object frame; |
| 2055 | |
| 2056 | frame = Qnil; |
| 2057 | fontset = check_fontset_name (name, &frame); |
| 2058 | |
| 2059 | CHECK_CHARACTER (ch); |
| 2060 | c = XINT (ch); |
| 2061 | list = Qnil; |
| 2062 | while (1) |
| 2063 | { |
| 2064 | for (i = 0, elt = FONTSET_REF (fontset, c); i < 2; |
| 2065 | i++, elt = FONTSET_FALLBACK (fontset)) |
| 2066 | if (VECTORP (elt)) |
| 2067 | for (j = 0; j < ASIZE (elt); j++) |
| 2068 | { |
| 2069 | Lisp_Object family, registry; |
| 2070 | |
| 2071 | val = AREF (elt, j); |
| 2072 | if (NILP (val)) |
| 2073 | return Qnil; |
| 2074 | repertory = AREF (val, 1); |
| 2075 | if (INTEGERP (repertory)) |
| 2076 | { |
| 2077 | struct charset *charset = CHARSET_FROM_ID (XINT (repertory)); |
| 2078 | |
| 2079 | if (! CHAR_CHARSET_P (c, charset)) |
| 2080 | continue; |
| 2081 | } |
| 2082 | else if (CHAR_TABLE_P (repertory)) |
| 2083 | { |
| 2084 | if (NILP (CHAR_TABLE_REF (repertory, c))) |
| 2085 | continue; |
| 2086 | } |
| 2087 | val = AREF (val, 0); |
| 2088 | /* VAL is a FONT-SPEC */ |
| 2089 | family = AREF (val, FONT_FAMILY_INDEX); |
| 2090 | if (! NILP (family)) |
| 2091 | family = SYMBOL_NAME (family); |
| 2092 | registry = AREF (val, FONT_REGISTRY_INDEX); |
| 2093 | if (! NILP (registry)) |
| 2094 | registry = SYMBOL_NAME (registry); |
| 2095 | val = Fcons (family, registry); |
| 2096 | if (NILP (all)) |
| 2097 | return val; |
| 2098 | list = Fcons (val, list); |
| 2099 | } |
| 2100 | if (EQ (fontset, Vdefault_fontset)) |
| 2101 | break; |
| 2102 | fontset = Vdefault_fontset; |
| 2103 | } |
| 2104 | return (Fnreverse (list)); |
| 2105 | } |
| 2106 | |
| 2107 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, |
| 2108 | doc: /* Return a list of all defined fontset names. */) |
| 2109 | (void) |
| 2110 | { |
| 2111 | Lisp_Object fontset, list; |
| 2112 | int i; |
| 2113 | |
| 2114 | list = Qnil; |
| 2115 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
| 2116 | { |
| 2117 | fontset = FONTSET_FROM_ID (i); |
| 2118 | if (!NILP (fontset) |
| 2119 | && BASE_FONTSET_P (fontset)) |
| 2120 | list = Fcons (FONTSET_NAME (fontset), list); |
| 2121 | } |
| 2122 | |
| 2123 | return list; |
| 2124 | } |
| 2125 | |
| 2126 | |
| 2127 | #ifdef ENABLE_CHECKING |
| 2128 | |
| 2129 | Lisp_Object dump_fontset (Lisp_Object) EXTERNALLY_VISIBLE; |
| 2130 | |
| 2131 | Lisp_Object |
| 2132 | dump_fontset (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 | struct frame *f = XFRAME (frame); |
| 2151 | |
| 2152 | if (FRAME_LIVE_P (f)) |
| 2153 | ASET (vec, 1, |
| 2154 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), |
| 2155 | f->name)); |
| 2156 | else |
| 2157 | ASET (vec, 1, |
| 2158 | Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), Qnil)); |
| 2159 | } |
| 2160 | if (!NILP (FONTSET_DEFAULT (fontset))) |
| 2161 | ASET (vec, 2, FONTSET_ID (FONTSET_DEFAULT (fontset))); |
| 2162 | } |
| 2163 | return vec; |
| 2164 | } |
| 2165 | |
| 2166 | DEFUN ("fontset-list-all", Ffontset_list_all, Sfontset_list_all, 0, 0, 0, |
| 2167 | doc: /* Return a brief summary of all fontsets for debug use. */) |
| 2168 | (void) |
| 2169 | { |
| 2170 | Lisp_Object val; |
| 2171 | int i; |
| 2172 | |
| 2173 | for (i = 0, val = Qnil; i < ASIZE (Vfontset_table); i++) |
| 2174 | if (! NILP (AREF (Vfontset_table, i))) |
| 2175 | val = Fcons (dump_fontset (AREF (Vfontset_table, i)), val); |
| 2176 | return (Fnreverse (val)); |
| 2177 | } |
| 2178 | #endif /* ENABLE_CHECKING */ |
| 2179 | |
| 2180 | void |
| 2181 | syms_of_fontset (void) |
| 2182 | { |
| 2183 | DEFSYM (Qfontset, "fontset"); |
| 2184 | Fput (Qfontset, Qchar_table_extra_slots, make_number (9)); |
| 2185 | DEFSYM (Qfontset_info, "fontset-info"); |
| 2186 | Fput (Qfontset_info, Qchar_table_extra_slots, make_number (1)); |
| 2187 | |
| 2188 | DEFSYM (Qprepend, "prepend"); |
| 2189 | DEFSYM (Qappend, "append"); |
| 2190 | DEFSYM (Qlatin, "latin"); |
| 2191 | |
| 2192 | Vcached_fontset_data = Qnil; |
| 2193 | staticpro (&Vcached_fontset_data); |
| 2194 | |
| 2195 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
| 2196 | staticpro (&Vfontset_table); |
| 2197 | |
| 2198 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); |
| 2199 | staticpro (&Vdefault_fontset); |
| 2200 | set_fontset_id (Vdefault_fontset, make_number (0)); |
| 2201 | set_fontset_name |
| 2202 | (Vdefault_fontset, |
| 2203 | build_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default")); |
| 2204 | ASET (Vfontset_table, 0, Vdefault_fontset); |
| 2205 | next_fontset_id = 1; |
| 2206 | |
| 2207 | auto_fontset_alist = Qnil; |
| 2208 | staticpro (&auto_fontset_alist); |
| 2209 | |
| 2210 | DEFVAR_LISP ("font-encoding-charset-alist", Vfont_encoding_charset_alist, |
| 2211 | doc: /* |
| 2212 | Alist of charsets vs the charsets to determine the preferred font encoding. |
| 2213 | Each element looks like (CHARSET . ENCODING-CHARSET), |
| 2214 | where ENCODING-CHARSET is a charset registered in the variable |
| 2215 | `font-encoding-alist' as ENCODING. |
| 2216 | |
| 2217 | When a text has a property `charset' and the value is CHARSET, a font |
| 2218 | whose encoding corresponds to ENCODING-CHARSET is preferred. */); |
| 2219 | Vfont_encoding_charset_alist = Qnil; |
| 2220 | |
| 2221 | DEFVAR_LISP ("use-default-ascent", Vuse_default_ascent, |
| 2222 | doc: /* |
| 2223 | Char table of characters whose ascent values should be ignored. |
| 2224 | If an entry for a character is non-nil, the ascent value of the glyph |
| 2225 | is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font. |
| 2226 | |
| 2227 | This affects how a composite character which contains |
| 2228 | such a character is displayed on screen. */); |
| 2229 | Vuse_default_ascent = Qnil; |
| 2230 | |
| 2231 | DEFVAR_LISP ("ignore-relative-composition", Vignore_relative_composition, |
| 2232 | doc: /* |
| 2233 | Char table of characters which are not composed relatively. |
| 2234 | If an entry for a character is non-nil, a composition sequence |
| 2235 | which contains that character is displayed so that |
| 2236 | the glyph of that character is put without considering |
| 2237 | an ascent and descent value of a previous character. */); |
| 2238 | Vignore_relative_composition = Qnil; |
| 2239 | |
| 2240 | DEFVAR_LISP ("alternate-fontname-alist", Valternate_fontname_alist, |
| 2241 | doc: /* Alist of fontname vs list of the alternate fontnames. |
| 2242 | When a specified font name is not found, the corresponding |
| 2243 | alternate fontnames (if any) are tried instead. */); |
| 2244 | Valternate_fontname_alist = Qnil; |
| 2245 | |
| 2246 | DEFVAR_LISP ("fontset-alias-alist", Vfontset_alias_alist, |
| 2247 | doc: /* Alist of fontset names vs the aliases. */); |
| 2248 | Vfontset_alias_alist |
| 2249 | = list1 (Fcons (FONTSET_NAME (Vdefault_fontset), |
| 2250 | build_pure_c_string ("fontset-default"))); |
| 2251 | |
| 2252 | DEFVAR_LISP ("vertical-centering-font-regexp", |
| 2253 | Vvertical_centering_font_regexp, |
| 2254 | doc: /* Regexp matching font names that require vertical centering on display. |
| 2255 | When a character is displayed with such fonts, the character is displayed |
| 2256 | at the vertical center of lines. */); |
| 2257 | Vvertical_centering_font_regexp = Qnil; |
| 2258 | |
| 2259 | DEFVAR_LISP ("otf-script-alist", Votf_script_alist, |
| 2260 | doc: /* Alist of OpenType script tags vs the corresponding script names. */); |
| 2261 | Votf_script_alist = Qnil; |
| 2262 | |
| 2263 | defsubr (&Squery_fontset); |
| 2264 | defsubr (&Snew_fontset); |
| 2265 | defsubr (&Sset_fontset_font); |
| 2266 | defsubr (&Sinternal_char_font); |
| 2267 | defsubr (&Sfontset_info); |
| 2268 | defsubr (&Sfontset_font); |
| 2269 | defsubr (&Sfontset_list); |
| 2270 | #ifdef ENABLE_CHECKING |
| 2271 | defsubr (&Sfontset_list_all); |
| 2272 | #endif |
| 2273 | } |