| 1 | /* font.c -- "Font" primitives. |
| 2 | |
| 3 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
| 4 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 |
| 5 | National Institute of Advanced Industrial Science and Technology (AIST) |
| 6 | Registration Number H13PRO009 |
| 7 | |
| 8 | This file is part of GNU Emacs. |
| 9 | |
| 10 | GNU Emacs is free software: you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation, either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | GNU Emacs is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #include <config.h> |
| 24 | #include <float.h> |
| 25 | #include <stdio.h> |
| 26 | |
| 27 | #include <c-ctype.h> |
| 28 | |
| 29 | #include "lisp.h" |
| 30 | #include "character.h" |
| 31 | #include "buffer.h" |
| 32 | #include "frame.h" |
| 33 | #include "window.h" |
| 34 | #include "dispextern.h" |
| 35 | #include "charset.h" |
| 36 | #include "composite.h" |
| 37 | #include "fontset.h" |
| 38 | #include "font.h" |
| 39 | |
| 40 | #ifdef HAVE_WINDOW_SYSTEM |
| 41 | #include TERM_HEADER |
| 42 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 43 | |
| 44 | Lisp_Object Qopentype; |
| 45 | |
| 46 | /* Important character set strings. */ |
| 47 | Lisp_Object Qascii_0, Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip; |
| 48 | |
| 49 | #define DEFAULT_ENCODING Qiso8859_1 |
| 50 | |
| 51 | /* Unicode category `Cf'. */ |
| 52 | static Lisp_Object QCf; |
| 53 | |
| 54 | /* Vector of Vfont_weight_table, Vfont_slant_table, and Vfont_width_table. */ |
| 55 | static Lisp_Object font_style_table; |
| 56 | |
| 57 | /* Structure used for tables mapping weight, slant, and width numeric |
| 58 | values and their names. */ |
| 59 | |
| 60 | struct table_entry |
| 61 | { |
| 62 | int numeric; |
| 63 | /* The first one is a valid name as a face attribute. |
| 64 | The second one (if any) is a typical name in XLFD field. */ |
| 65 | const char *names[5]; |
| 66 | }; |
| 67 | |
| 68 | /* Table of weight numeric values and their names. This table must be |
| 69 | sorted by numeric values in ascending order. */ |
| 70 | |
| 71 | static const struct table_entry weight_table[] = |
| 72 | { |
| 73 | { 0, { "thin" }}, |
| 74 | { 20, { "ultra-light", "ultralight" }}, |
| 75 | { 40, { "extra-light", "extralight" }}, |
| 76 | { 50, { "light" }}, |
| 77 | { 75, { "semi-light", "semilight", "demilight", "book" }}, |
| 78 | { 100, { "normal", "medium", "regular", "unspecified" }}, |
| 79 | { 180, { "semi-bold", "semibold", "demibold", "demi" }}, |
| 80 | { 200, { "bold" }}, |
| 81 | { 205, { "extra-bold", "extrabold" }}, |
| 82 | { 210, { "ultra-bold", "ultrabold", "black" }} |
| 83 | }; |
| 84 | |
| 85 | /* Table of slant numeric values and their names. This table must be |
| 86 | sorted by numeric values in ascending order. */ |
| 87 | |
| 88 | static const struct table_entry slant_table[] = |
| 89 | { |
| 90 | { 0, { "reverse-oblique", "ro" }}, |
| 91 | { 10, { "reverse-italic", "ri" }}, |
| 92 | { 100, { "normal", "r", "unspecified" }}, |
| 93 | { 200, { "italic" ,"i", "ot" }}, |
| 94 | { 210, { "oblique", "o" }} |
| 95 | }; |
| 96 | |
| 97 | /* Table of width numeric values and their names. This table must be |
| 98 | sorted by numeric values in ascending order. */ |
| 99 | |
| 100 | static const struct table_entry width_table[] = |
| 101 | { |
| 102 | { 50, { "ultra-condensed", "ultracondensed" }}, |
| 103 | { 63, { "extra-condensed", "extracondensed" }}, |
| 104 | { 75, { "condensed", "compressed", "narrow" }}, |
| 105 | { 87, { "semi-condensed", "semicondensed", "demicondensed" }}, |
| 106 | { 100, { "normal", "medium", "regular", "unspecified" }}, |
| 107 | { 113, { "semi-expanded", "semiexpanded", "demiexpanded" }}, |
| 108 | { 125, { "expanded" }}, |
| 109 | { 150, { "extra-expanded", "extraexpanded" }}, |
| 110 | { 200, { "ultra-expanded", "ultraexpanded", "wide" }} |
| 111 | }; |
| 112 | |
| 113 | Lisp_Object QCfoundry; |
| 114 | static Lisp_Object QCadstyle, QCregistry; |
| 115 | /* Symbols representing keys of font extra info. */ |
| 116 | Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript, QCavgwidth; |
| 117 | Lisp_Object QCantialias, QCfont_entity; |
| 118 | static Lisp_Object QCfc_unknown_spec; |
| 119 | /* Symbols representing values of font spacing property. */ |
| 120 | static Lisp_Object Qc, Qm, Qd; |
| 121 | Lisp_Object Qp; |
| 122 | /* Special ADSTYLE properties to avoid fonts used for Latin |
| 123 | characters; used in xfont.c and ftfont.c. */ |
| 124 | Lisp_Object Qja, Qko; |
| 125 | |
| 126 | static Lisp_Object QCuser_spec; |
| 127 | |
| 128 | /* Alist of font registry symbols and the corresponding charset |
| 129 | information. The information is retrieved from |
| 130 | Vfont_encoding_alist on demand. |
| 131 | |
| 132 | Eash element has the form: |
| 133 | (REGISTRY . (ENCODING-CHARSET-ID . REPERTORY-CHARSET-ID)) |
| 134 | or |
| 135 | (REGISTRY . nil) |
| 136 | |
| 137 | In the former form, ENCODING-CHARSET-ID is an ID of a charset that |
| 138 | encodes a character code to a glyph code of a font, and |
| 139 | REPERTORY-CHARSET-ID is an ID of a charset that tells if a |
| 140 | character is supported by a font. |
| 141 | |
| 142 | The latter form means that the information for REGISTRY couldn't be |
| 143 | retrieved. */ |
| 144 | static Lisp_Object font_charset_alist; |
| 145 | |
| 146 | /* List of all font drivers. Each font-backend (XXXfont.c) calls |
| 147 | register_font_driver in syms_of_XXXfont to register its font-driver |
| 148 | here. */ |
| 149 | static struct font_driver_list *font_driver_list; |
| 150 | |
| 151 | #ifdef ENABLE_CHECKING |
| 152 | |
| 153 | /* Used to catch bogus pointers in font objects. */ |
| 154 | |
| 155 | bool |
| 156 | valid_font_driver (struct font_driver *drv) |
| 157 | { |
| 158 | Lisp_Object tail, frame; |
| 159 | struct font_driver_list *fdl; |
| 160 | |
| 161 | for (fdl = font_driver_list; fdl; fdl = fdl->next) |
| 162 | if (fdl->driver == drv) |
| 163 | return true; |
| 164 | FOR_EACH_FRAME (tail, frame) |
| 165 | for (fdl = XFRAME (frame)->font_driver_list; fdl; fdl = fdl->next) |
| 166 | if (fdl->driver == drv) |
| 167 | return true; |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | #endif /* ENABLE_CHECKING */ |
| 172 | |
| 173 | /* Creators of font-related Lisp object. */ |
| 174 | |
| 175 | static Lisp_Object |
| 176 | font_make_spec (void) |
| 177 | { |
| 178 | Lisp_Object font_spec; |
| 179 | struct font_spec *spec |
| 180 | = ((struct font_spec *) |
| 181 | allocate_pseudovector (VECSIZE (struct font_spec), |
| 182 | FONT_SPEC_MAX, PVEC_FONT)); |
| 183 | XSETFONT (font_spec, spec); |
| 184 | return font_spec; |
| 185 | } |
| 186 | |
| 187 | Lisp_Object |
| 188 | font_make_entity (void) |
| 189 | { |
| 190 | Lisp_Object font_entity; |
| 191 | struct font_entity *entity |
| 192 | = ((struct font_entity *) |
| 193 | allocate_pseudovector (VECSIZE (struct font_entity), |
| 194 | FONT_ENTITY_MAX, PVEC_FONT)); |
| 195 | XSETFONT (font_entity, entity); |
| 196 | return font_entity; |
| 197 | } |
| 198 | |
| 199 | /* Create a font-object whose structure size is SIZE. If ENTITY is |
| 200 | not nil, copy properties from ENTITY to the font-object. If |
| 201 | PIXELSIZE is positive, set the `size' property to PIXELSIZE. */ |
| 202 | Lisp_Object |
| 203 | font_make_object (int size, Lisp_Object entity, int pixelsize) |
| 204 | { |
| 205 | Lisp_Object font_object; |
| 206 | struct font *font |
| 207 | = (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT); |
| 208 | int i; |
| 209 | |
| 210 | /* GC can happen before the driver is set up, |
| 211 | so avoid dangling pointer here (Bug#17771). */ |
| 212 | font->driver = NULL; |
| 213 | XSETFONT (font_object, font); |
| 214 | |
| 215 | if (! NILP (entity)) |
| 216 | { |
| 217 | for (i = 1; i < FONT_SPEC_MAX; i++) |
| 218 | font->props[i] = AREF (entity, i); |
| 219 | if (! NILP (AREF (entity, FONT_EXTRA_INDEX))) |
| 220 | font->props[FONT_EXTRA_INDEX] |
| 221 | = Fcopy_alist (AREF (entity, FONT_EXTRA_INDEX)); |
| 222 | } |
| 223 | if (size > 0) |
| 224 | font->props[FONT_SIZE_INDEX] = make_number (pixelsize); |
| 225 | return font_object; |
| 226 | } |
| 227 | |
| 228 | \f |
| 229 | |
| 230 | static int font_pixel_size (struct frame *f, Lisp_Object); |
| 231 | static Lisp_Object font_open_entity (struct frame *, Lisp_Object, int); |
| 232 | static Lisp_Object font_matching_entity (struct frame *, Lisp_Object *, |
| 233 | Lisp_Object); |
| 234 | static unsigned font_encode_char (Lisp_Object, int); |
| 235 | |
| 236 | /* Number of registered font drivers. */ |
| 237 | static int num_font_drivers; |
| 238 | |
| 239 | |
| 240 | /* Return a Lispy value of a font property value at STR and LEN bytes. |
| 241 | If STR is "*", return nil. If FORCE_SYMBOL, or if STR does not |
| 242 | consist entirely of one or more digits, return a symbol interned |
| 243 | from STR. Otherwise, return an integer. */ |
| 244 | |
| 245 | Lisp_Object |
| 246 | font_intern_prop (const char *str, ptrdiff_t len, bool force_symbol) |
| 247 | { |
| 248 | ptrdiff_t i; |
| 249 | Lisp_Object tem; |
| 250 | Lisp_Object obarray; |
| 251 | ptrdiff_t nbytes, nchars; |
| 252 | |
| 253 | if (len == 1 && *str == '*') |
| 254 | return Qnil; |
| 255 | if (!force_symbol && 0 < len && '0' <= *str && *str <= '9') |
| 256 | { |
| 257 | for (i = 1; i < len; i++) |
| 258 | if (! ('0' <= str[i] && str[i] <= '9')) |
| 259 | break; |
| 260 | if (i == len) |
| 261 | { |
| 262 | EMACS_INT n; |
| 263 | |
| 264 | i = 0; |
| 265 | for (n = 0; (n += str[i++] - '0') <= MOST_POSITIVE_FIXNUM; n *= 10) |
| 266 | { |
| 267 | if (i == len) |
| 268 | return make_number (n); |
| 269 | if (MOST_POSITIVE_FIXNUM / 10 < n) |
| 270 | break; |
| 271 | } |
| 272 | |
| 273 | xsignal1 (Qoverflow_error, make_string (str, len)); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* This code is similar to intern function from lread.c. */ |
| 278 | obarray = check_obarray (Vobarray); |
| 279 | parse_str_as_multibyte ((unsigned char *) str, len, &nchars, &nbytes); |
| 280 | tem = oblookup (obarray, str, |
| 281 | (len == nchars || len != nbytes) ? len : nchars, len); |
| 282 | |
| 283 | if (SYMBOLP (tem)) |
| 284 | return tem; |
| 285 | tem = make_specified_string (str, nchars, len, |
| 286 | len != nchars && len == nbytes); |
| 287 | return Fintern (tem, obarray); |
| 288 | } |
| 289 | |
| 290 | /* Return a pixel size of font-spec SPEC on frame F. */ |
| 291 | |
| 292 | static int |
| 293 | font_pixel_size (struct frame *f, Lisp_Object spec) |
| 294 | { |
| 295 | #ifdef HAVE_WINDOW_SYSTEM |
| 296 | Lisp_Object size = AREF (spec, FONT_SIZE_INDEX); |
| 297 | double point_size; |
| 298 | int dpi, pixel_size; |
| 299 | Lisp_Object val; |
| 300 | |
| 301 | if (INTEGERP (size)) |
| 302 | return XINT (size); |
| 303 | if (NILP (size)) |
| 304 | return 0; |
| 305 | eassert (FLOATP (size)); |
| 306 | point_size = XFLOAT_DATA (size); |
| 307 | val = AREF (spec, FONT_DPI_INDEX); |
| 308 | if (INTEGERP (val)) |
| 309 | dpi = XINT (val); |
| 310 | else |
| 311 | dpi = FRAME_RES_Y (f); |
| 312 | pixel_size = POINT_TO_PIXEL (point_size, dpi); |
| 313 | return pixel_size; |
| 314 | #else |
| 315 | return 1; |
| 316 | #endif |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* Return a value of PROP's VAL (symbol or integer) to be stored in a |
| 321 | font vector. If VAL is not valid (i.e. not registered in |
| 322 | font_style_table), return -1 if NOERROR is zero, and return a |
| 323 | proper index if NOERROR is nonzero. In that case, register VAL in |
| 324 | font_style_table if VAL is a symbol, and return the closest index if |
| 325 | VAL is an integer. */ |
| 326 | |
| 327 | int |
| 328 | font_style_to_value (enum font_property_index prop, Lisp_Object val, |
| 329 | bool noerror) |
| 330 | { |
| 331 | Lisp_Object table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 332 | int len; |
| 333 | |
| 334 | CHECK_VECTOR (table); |
| 335 | len = ASIZE (table); |
| 336 | |
| 337 | if (SYMBOLP (val)) |
| 338 | { |
| 339 | int i, j; |
| 340 | char *s; |
| 341 | Lisp_Object args[2], elt; |
| 342 | |
| 343 | /* At first try exact match. */ |
| 344 | for (i = 0; i < len; i++) |
| 345 | { |
| 346 | CHECK_VECTOR (AREF (table, i)); |
| 347 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 348 | if (EQ (val, AREF (AREF (table, i), j))) |
| 349 | { |
| 350 | CHECK_NUMBER (AREF (AREF (table, i), 0)); |
| 351 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 352 | | (i << 4) | (j - 1)); |
| 353 | } |
| 354 | } |
| 355 | /* Try also with case-folding match. */ |
| 356 | s = SSDATA (SYMBOL_NAME (val)); |
| 357 | for (i = 0; i < len; i++) |
| 358 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 359 | { |
| 360 | elt = AREF (AREF (table, i), j); |
| 361 | if (xstrcasecmp (s, SSDATA (SYMBOL_NAME (elt))) == 0) |
| 362 | { |
| 363 | CHECK_NUMBER (AREF (AREF (table, i), 0)); |
| 364 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 365 | | (i << 4) | (j - 1)); |
| 366 | } |
| 367 | } |
| 368 | if (! noerror) |
| 369 | return -1; |
| 370 | eassert (len < 255); |
| 371 | elt = Fmake_vector (make_number (2), make_number (100)); |
| 372 | ASET (elt, 1, val); |
| 373 | args[0] = table; |
| 374 | args[1] = Fmake_vector (make_number (1), elt); |
| 375 | ASET (font_style_table, prop - FONT_WEIGHT_INDEX, Fvconcat (2, args)); |
| 376 | return (100 << 8) | (i << 4); |
| 377 | } |
| 378 | else |
| 379 | { |
| 380 | int i, last_n; |
| 381 | EMACS_INT numeric = XINT (val); |
| 382 | |
| 383 | for (i = 0, last_n = -1; i < len; i++) |
| 384 | { |
| 385 | int n; |
| 386 | |
| 387 | CHECK_VECTOR (AREF (table, i)); |
| 388 | CHECK_NUMBER (AREF (AREF (table, i), 0)); |
| 389 | n = XINT (AREF (AREF (table, i), 0)); |
| 390 | if (numeric == n) |
| 391 | return (n << 8) | (i << 4); |
| 392 | if (numeric < n) |
| 393 | { |
| 394 | if (! noerror) |
| 395 | return -1; |
| 396 | return ((i == 0 || n - numeric < numeric - last_n) |
| 397 | ? (n << 8) | (i << 4): (last_n << 8 | ((i - 1) << 4))); |
| 398 | } |
| 399 | last_n = n; |
| 400 | } |
| 401 | if (! noerror) |
| 402 | return -1; |
| 403 | return ((last_n << 8) | ((i - 1) << 4)); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | Lisp_Object |
| 408 | font_style_symbolic (Lisp_Object font, enum font_property_index prop, |
| 409 | bool for_face) |
| 410 | { |
| 411 | Lisp_Object val = AREF (font, prop); |
| 412 | Lisp_Object table, elt; |
| 413 | int i; |
| 414 | |
| 415 | if (NILP (val)) |
| 416 | return Qnil; |
| 417 | table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 418 | CHECK_VECTOR (table); |
| 419 | i = XINT (val) & 0xFF; |
| 420 | eassert (((i >> 4) & 0xF) < ASIZE (table)); |
| 421 | elt = AREF (table, ((i >> 4) & 0xF)); |
| 422 | CHECK_VECTOR (elt); |
| 423 | eassert ((i & 0xF) + 1 < ASIZE (elt)); |
| 424 | elt = (for_face ? AREF (elt, 1) : AREF (elt, (i & 0xF) + 1)); |
| 425 | CHECK_SYMBOL (elt); |
| 426 | return elt; |
| 427 | } |
| 428 | |
| 429 | /* Return ENCODING or a cons of ENCODING and REPERTORY of the font |
| 430 | FONTNAME. ENCODING is a charset symbol that specifies the encoding |
| 431 | of the font. REPERTORY is a charset symbol or nil. */ |
| 432 | |
| 433 | Lisp_Object |
| 434 | find_font_encoding (Lisp_Object fontname) |
| 435 | { |
| 436 | Lisp_Object tail, elt; |
| 437 | |
| 438 | for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail)) |
| 439 | { |
| 440 | elt = XCAR (tail); |
| 441 | if (CONSP (elt) |
| 442 | && STRINGP (XCAR (elt)) |
| 443 | && fast_string_match_ignore_case (XCAR (elt), fontname) >= 0 |
| 444 | && (SYMBOLP (XCDR (elt)) |
| 445 | ? CHARSETP (XCDR (elt)) |
| 446 | : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt))))) |
| 447 | return (XCDR (elt)); |
| 448 | } |
| 449 | return Qnil; |
| 450 | } |
| 451 | |
| 452 | /* Return encoding charset and repertory charset for REGISTRY in |
| 453 | ENCODING and REPERTORY correspondingly. If correct information for |
| 454 | REGISTRY is available, return 0. Otherwise return -1. */ |
| 455 | |
| 456 | int |
| 457 | font_registry_charsets (Lisp_Object registry, struct charset **encoding, struct charset **repertory) |
| 458 | { |
| 459 | Lisp_Object val; |
| 460 | int encoding_id, repertory_id; |
| 461 | |
| 462 | val = Fassoc_string (registry, font_charset_alist, Qt); |
| 463 | if (! NILP (val)) |
| 464 | { |
| 465 | val = XCDR (val); |
| 466 | if (NILP (val)) |
| 467 | return -1; |
| 468 | encoding_id = XINT (XCAR (val)); |
| 469 | repertory_id = XINT (XCDR (val)); |
| 470 | } |
| 471 | else |
| 472 | { |
| 473 | val = find_font_encoding (SYMBOL_NAME (registry)); |
| 474 | if (SYMBOLP (val) && CHARSETP (val)) |
| 475 | { |
| 476 | encoding_id = repertory_id = XINT (CHARSET_SYMBOL_ID (val)); |
| 477 | } |
| 478 | else if (CONSP (val)) |
| 479 | { |
| 480 | if (! CHARSETP (XCAR (val))) |
| 481 | goto invalid_entry; |
| 482 | encoding_id = XINT (CHARSET_SYMBOL_ID (XCAR (val))); |
| 483 | if (NILP (XCDR (val))) |
| 484 | repertory_id = -1; |
| 485 | else |
| 486 | { |
| 487 | if (! CHARSETP (XCDR (val))) |
| 488 | goto invalid_entry; |
| 489 | repertory_id = XINT (CHARSET_SYMBOL_ID (XCDR (val))); |
| 490 | } |
| 491 | } |
| 492 | else |
| 493 | goto invalid_entry; |
| 494 | val = Fcons (make_number (encoding_id), make_number (repertory_id)); |
| 495 | font_charset_alist |
| 496 | = nconc2 (font_charset_alist, list1 (Fcons (registry, val))); |
| 497 | } |
| 498 | |
| 499 | if (encoding) |
| 500 | *encoding = CHARSET_FROM_ID (encoding_id); |
| 501 | if (repertory) |
| 502 | *repertory = repertory_id >= 0 ? CHARSET_FROM_ID (repertory_id) : NULL; |
| 503 | return 0; |
| 504 | |
| 505 | invalid_entry: |
| 506 | font_charset_alist |
| 507 | = nconc2 (font_charset_alist, list1 (Fcons (registry, Qnil))); |
| 508 | return -1; |
| 509 | } |
| 510 | |
| 511 | \f |
| 512 | /* Font property value validators. See the comment of |
| 513 | font_property_table for the meaning of the arguments. */ |
| 514 | |
| 515 | static Lisp_Object font_prop_validate (int, Lisp_Object, Lisp_Object); |
| 516 | static Lisp_Object font_prop_validate_symbol (Lisp_Object, Lisp_Object); |
| 517 | static Lisp_Object font_prop_validate_style (Lisp_Object, Lisp_Object); |
| 518 | static Lisp_Object font_prop_validate_non_neg (Lisp_Object, Lisp_Object); |
| 519 | static Lisp_Object font_prop_validate_spacing (Lisp_Object, Lisp_Object); |
| 520 | static int get_font_prop_index (Lisp_Object); |
| 521 | |
| 522 | static Lisp_Object |
| 523 | font_prop_validate_symbol (Lisp_Object prop, Lisp_Object val) |
| 524 | { |
| 525 | if (STRINGP (val)) |
| 526 | val = Fintern (val, Qnil); |
| 527 | if (! SYMBOLP (val)) |
| 528 | val = Qerror; |
| 529 | else if (EQ (prop, QCregistry)) |
| 530 | val = Fintern (Fdowncase (SYMBOL_NAME (val)), Qnil); |
| 531 | return val; |
| 532 | } |
| 533 | |
| 534 | |
| 535 | static Lisp_Object |
| 536 | font_prop_validate_style (Lisp_Object style, Lisp_Object val) |
| 537 | { |
| 538 | enum font_property_index prop = (EQ (style, QCweight) ? FONT_WEIGHT_INDEX |
| 539 | : EQ (style, QCslant) ? FONT_SLANT_INDEX |
| 540 | : FONT_WIDTH_INDEX); |
| 541 | if (INTEGERP (val)) |
| 542 | { |
| 543 | EMACS_INT n = XINT (val); |
| 544 | CHECK_VECTOR (AREF (font_style_table, prop - FONT_WEIGHT_INDEX)); |
| 545 | if (((n >> 4) & 0xF) |
| 546 | >= ASIZE (AREF (font_style_table, prop - FONT_WEIGHT_INDEX))) |
| 547 | val = Qerror; |
| 548 | else |
| 549 | { |
| 550 | Lisp_Object elt = AREF (AREF (font_style_table, prop - FONT_WEIGHT_INDEX), (n >> 4) & 0xF); |
| 551 | |
| 552 | CHECK_VECTOR (elt); |
| 553 | if ((n & 0xF) + 1 >= ASIZE (elt)) |
| 554 | val = Qerror; |
| 555 | else |
| 556 | { |
| 557 | CHECK_NUMBER (AREF (elt, 0)); |
| 558 | if (XINT (AREF (elt, 0)) != (n >> 8)) |
| 559 | val = Qerror; |
| 560 | } |
| 561 | } |
| 562 | } |
| 563 | else if (SYMBOLP (val)) |
| 564 | { |
| 565 | int n = font_style_to_value (prop, val, 0); |
| 566 | |
| 567 | val = n >= 0 ? make_number (n) : Qerror; |
| 568 | } |
| 569 | else |
| 570 | val = Qerror; |
| 571 | return val; |
| 572 | } |
| 573 | |
| 574 | static Lisp_Object |
| 575 | font_prop_validate_non_neg (Lisp_Object prop, Lisp_Object val) |
| 576 | { |
| 577 | return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0) |
| 578 | ? val : Qerror); |
| 579 | } |
| 580 | |
| 581 | static Lisp_Object |
| 582 | font_prop_validate_spacing (Lisp_Object prop, Lisp_Object val) |
| 583 | { |
| 584 | if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL)) |
| 585 | return val; |
| 586 | if (SYMBOLP (val) && SBYTES (SYMBOL_NAME (val)) == 1) |
| 587 | { |
| 588 | char spacing = SDATA (SYMBOL_NAME (val))[0]; |
| 589 | |
| 590 | if (spacing == 'c' || spacing == 'C') |
| 591 | return make_number (FONT_SPACING_CHARCELL); |
| 592 | if (spacing == 'm' || spacing == 'M') |
| 593 | return make_number (FONT_SPACING_MONO); |
| 594 | if (spacing == 'p' || spacing == 'P') |
| 595 | return make_number (FONT_SPACING_PROPORTIONAL); |
| 596 | if (spacing == 'd' || spacing == 'D') |
| 597 | return make_number (FONT_SPACING_DUAL); |
| 598 | } |
| 599 | return Qerror; |
| 600 | } |
| 601 | |
| 602 | static Lisp_Object |
| 603 | font_prop_validate_otf (Lisp_Object prop, Lisp_Object val) |
| 604 | { |
| 605 | Lisp_Object tail, tmp; |
| 606 | int i; |
| 607 | |
| 608 | /* VAL = (SCRIPT [ LANGSYS [ GSUB-FEATURES [ GPOS-FEATURES ]]]) |
| 609 | GSUB-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil |
| 610 | GPOS-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil */ |
| 611 | if (! CONSP (val)) |
| 612 | return Qerror; |
| 613 | if (! SYMBOLP (XCAR (val))) |
| 614 | return Qerror; |
| 615 | tail = XCDR (val); |
| 616 | if (NILP (tail)) |
| 617 | return val; |
| 618 | if (! CONSP (tail) || ! SYMBOLP (XCAR (val))) |
| 619 | return Qerror; |
| 620 | for (i = 0; i < 2; i++) |
| 621 | { |
| 622 | tail = XCDR (tail); |
| 623 | if (NILP (tail)) |
| 624 | return val; |
| 625 | if (! CONSP (tail)) |
| 626 | return Qerror; |
| 627 | for (tmp = XCAR (tail); CONSP (tmp); tmp = XCDR (tmp)) |
| 628 | if (! SYMBOLP (XCAR (tmp))) |
| 629 | return Qerror; |
| 630 | if (! NILP (tmp)) |
| 631 | return Qerror; |
| 632 | } |
| 633 | return val; |
| 634 | } |
| 635 | |
| 636 | /* Structure of known font property keys and validator of the |
| 637 | values. */ |
| 638 | static const struct |
| 639 | { |
| 640 | /* Pointer to the key symbol. */ |
| 641 | Lisp_Object *key; |
| 642 | /* Function to validate PROP's value VAL, or NULL if any value is |
| 643 | ok. The value is VAL or its regularized value if VAL is valid, |
| 644 | and Qerror if not. */ |
| 645 | Lisp_Object (*validator) (Lisp_Object prop, Lisp_Object val); |
| 646 | } font_property_table[] = |
| 647 | { { &QCtype, font_prop_validate_symbol }, |
| 648 | { &QCfoundry, font_prop_validate_symbol }, |
| 649 | { &QCfamily, font_prop_validate_symbol }, |
| 650 | { &QCadstyle, font_prop_validate_symbol }, |
| 651 | { &QCregistry, font_prop_validate_symbol }, |
| 652 | { &QCweight, font_prop_validate_style }, |
| 653 | { &QCslant, font_prop_validate_style }, |
| 654 | { &QCwidth, font_prop_validate_style }, |
| 655 | { &QCsize, font_prop_validate_non_neg }, |
| 656 | { &QCdpi, font_prop_validate_non_neg }, |
| 657 | { &QCspacing, font_prop_validate_spacing }, |
| 658 | { &QCavgwidth, font_prop_validate_non_neg }, |
| 659 | /* The order of the above entries must match with enum |
| 660 | font_property_index. */ |
| 661 | { &QClang, font_prop_validate_symbol }, |
| 662 | { &QCscript, font_prop_validate_symbol }, |
| 663 | { &QCotf, font_prop_validate_otf } |
| 664 | }; |
| 665 | |
| 666 | /* Return an index number of font property KEY or -1 if KEY is not an |
| 667 | already known property. */ |
| 668 | |
| 669 | static int |
| 670 | get_font_prop_index (Lisp_Object key) |
| 671 | { |
| 672 | int i; |
| 673 | |
| 674 | for (i = 0; i < ARRAYELTS (font_property_table); i++) |
| 675 | if (EQ (key, *font_property_table[i].key)) |
| 676 | return i; |
| 677 | return -1; |
| 678 | } |
| 679 | |
| 680 | /* Validate the font property. The property key is specified by the |
| 681 | symbol PROP, or the index IDX (if PROP is nil). If VAL is invalid, |
| 682 | signal an error. The value is VAL or the regularized one. */ |
| 683 | |
| 684 | static Lisp_Object |
| 685 | font_prop_validate (int idx, Lisp_Object prop, Lisp_Object val) |
| 686 | { |
| 687 | Lisp_Object validated; |
| 688 | |
| 689 | if (NILP (val)) |
| 690 | return val; |
| 691 | if (NILP (prop)) |
| 692 | prop = *font_property_table[idx].key; |
| 693 | else |
| 694 | { |
| 695 | idx = get_font_prop_index (prop); |
| 696 | if (idx < 0) |
| 697 | return val; |
| 698 | } |
| 699 | validated = (font_property_table[idx].validator) (prop, val); |
| 700 | if (EQ (validated, Qerror)) |
| 701 | signal_error ("invalid font property", Fcons (prop, val)); |
| 702 | return validated; |
| 703 | } |
| 704 | |
| 705 | |
| 706 | /* Store VAL as a value of extra font property PROP in FONT while |
| 707 | keeping the sorting order. Don't check the validity of VAL. */ |
| 708 | |
| 709 | Lisp_Object |
| 710 | font_put_extra (Lisp_Object font, Lisp_Object prop, Lisp_Object val) |
| 711 | { |
| 712 | Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX); |
| 713 | Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra)); |
| 714 | |
| 715 | if (NILP (slot)) |
| 716 | { |
| 717 | Lisp_Object prev = Qnil; |
| 718 | |
| 719 | while (CONSP (extra) |
| 720 | && NILP (Fstring_lessp (prop, XCAR (XCAR (extra))))) |
| 721 | prev = extra, extra = XCDR (extra); |
| 722 | |
| 723 | if (NILP (prev)) |
| 724 | ASET (font, FONT_EXTRA_INDEX, Fcons (Fcons (prop, val), extra)); |
| 725 | else |
| 726 | XSETCDR (prev, Fcons (Fcons (prop, val), extra)); |
| 727 | |
| 728 | return val; |
| 729 | } |
| 730 | XSETCDR (slot, val); |
| 731 | if (NILP (val)) |
| 732 | ASET (font, FONT_EXTRA_INDEX, Fdelq (slot, extra)); |
| 733 | return val; |
| 734 | } |
| 735 | |
| 736 | \f |
| 737 | /* Font name parser and unparser. */ |
| 738 | |
| 739 | static int parse_matrix (const char *); |
| 740 | static int font_expand_wildcards (Lisp_Object *, int); |
| 741 | static int font_parse_name (char *, ptrdiff_t, Lisp_Object); |
| 742 | |
| 743 | /* An enumerator for each field of an XLFD font name. */ |
| 744 | enum xlfd_field_index |
| 745 | { |
| 746 | XLFD_FOUNDRY_INDEX, |
| 747 | XLFD_FAMILY_INDEX, |
| 748 | XLFD_WEIGHT_INDEX, |
| 749 | XLFD_SLANT_INDEX, |
| 750 | XLFD_SWIDTH_INDEX, |
| 751 | XLFD_ADSTYLE_INDEX, |
| 752 | XLFD_PIXEL_INDEX, |
| 753 | XLFD_POINT_INDEX, |
| 754 | XLFD_RESX_INDEX, |
| 755 | XLFD_RESY_INDEX, |
| 756 | XLFD_SPACING_INDEX, |
| 757 | XLFD_AVGWIDTH_INDEX, |
| 758 | XLFD_REGISTRY_INDEX, |
| 759 | XLFD_ENCODING_INDEX, |
| 760 | XLFD_LAST_INDEX |
| 761 | }; |
| 762 | |
| 763 | /* An enumerator for mask bit corresponding to each XLFD field. */ |
| 764 | enum xlfd_field_mask |
| 765 | { |
| 766 | XLFD_FOUNDRY_MASK = 0x0001, |
| 767 | XLFD_FAMILY_MASK = 0x0002, |
| 768 | XLFD_WEIGHT_MASK = 0x0004, |
| 769 | XLFD_SLANT_MASK = 0x0008, |
| 770 | XLFD_SWIDTH_MASK = 0x0010, |
| 771 | XLFD_ADSTYLE_MASK = 0x0020, |
| 772 | XLFD_PIXEL_MASK = 0x0040, |
| 773 | XLFD_POINT_MASK = 0x0080, |
| 774 | XLFD_RESX_MASK = 0x0100, |
| 775 | XLFD_RESY_MASK = 0x0200, |
| 776 | XLFD_SPACING_MASK = 0x0400, |
| 777 | XLFD_AVGWIDTH_MASK = 0x0800, |
| 778 | XLFD_REGISTRY_MASK = 0x1000, |
| 779 | XLFD_ENCODING_MASK = 0x2000 |
| 780 | }; |
| 781 | |
| 782 | |
| 783 | /* Parse P pointing to the pixel/point size field of the form |
| 784 | `[A B C D]' which specifies a transformation matrix: |
| 785 | |
| 786 | A B 0 |
| 787 | C D 0 |
| 788 | 0 0 1 |
| 789 | |
| 790 | by which all glyphs of the font are transformed. The spec says |
| 791 | that scalar value N for the pixel/point size is equivalent to: |
| 792 | A = N * resx/resy, B = C = 0, D = N. |
| 793 | |
| 794 | Return the scalar value N if the form is valid. Otherwise return |
| 795 | -1. */ |
| 796 | |
| 797 | static int |
| 798 | parse_matrix (const char *p) |
| 799 | { |
| 800 | double matrix[4]; |
| 801 | char *end; |
| 802 | int i; |
| 803 | |
| 804 | for (i = 0, p++; i < 4 && *p && *p != ']'; i++) |
| 805 | { |
| 806 | if (*p == '~') |
| 807 | matrix[i] = - strtod (p + 1, &end); |
| 808 | else |
| 809 | matrix[i] = strtod (p, &end); |
| 810 | p = end; |
| 811 | } |
| 812 | return (i == 4 ? (int) matrix[3] : -1); |
| 813 | } |
| 814 | |
| 815 | /* Expand a wildcard field in FIELD (the first N fields are filled) to |
| 816 | multiple fields to fill in all 14 XLFD fields while restricting a |
| 817 | field position by its contents. */ |
| 818 | |
| 819 | static int |
| 820 | font_expand_wildcards (Lisp_Object *field, int n) |
| 821 | { |
| 822 | /* Copy of FIELD. */ |
| 823 | Lisp_Object tmp[XLFD_LAST_INDEX]; |
| 824 | /* Array of information about where this element can go. Nth |
| 825 | element is for Nth element of FIELD. */ |
| 826 | struct { |
| 827 | /* Minimum possible field. */ |
| 828 | int from; |
| 829 | /* Maximum possible field. */ |
| 830 | int to; |
| 831 | /* Bit mask of possible field. Nth bit corresponds to Nth field. */ |
| 832 | int mask; |
| 833 | } range[XLFD_LAST_INDEX]; |
| 834 | int i, j; |
| 835 | int range_from, range_to; |
| 836 | unsigned range_mask; |
| 837 | |
| 838 | #define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \ |
| 839 | | XLFD_ADSTYLE_MASK | XLFD_REGISTRY_MASK) |
| 840 | #define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK) |
| 841 | #define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \ |
| 842 | | XLFD_AVGWIDTH_MASK) |
| 843 | #define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK) |
| 844 | |
| 845 | /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th |
| 846 | field. The value is shifted to left one bit by one in the |
| 847 | following loop. */ |
| 848 | for (i = 0, range_mask = 0; i <= 14 - n; i++) |
| 849 | range_mask = (range_mask << 1) | 1; |
| 850 | |
| 851 | /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a |
| 852 | position-based restriction for FIELD[I]. */ |
| 853 | for (i = 0, range_from = 0, range_to = 14 - n; i < n; |
| 854 | i++, range_from++, range_to++, range_mask <<= 1) |
| 855 | { |
| 856 | Lisp_Object val = field[i]; |
| 857 | |
| 858 | tmp[i] = val; |
| 859 | if (NILP (val)) |
| 860 | { |
| 861 | /* Wildcard. */ |
| 862 | range[i].from = range_from; |
| 863 | range[i].to = range_to; |
| 864 | range[i].mask = range_mask; |
| 865 | } |
| 866 | else |
| 867 | { |
| 868 | /* The triplet FROM, TO, and MASK is a value-based |
| 869 | restriction for FIELD[I]. */ |
| 870 | int from, to; |
| 871 | unsigned mask; |
| 872 | |
| 873 | if (INTEGERP (val)) |
| 874 | { |
| 875 | EMACS_INT numeric = XINT (val); |
| 876 | |
| 877 | if (i + 1 == n) |
| 878 | from = to = XLFD_ENCODING_INDEX, |
| 879 | mask = XLFD_ENCODING_MASK; |
| 880 | else if (numeric == 0) |
| 881 | from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 882 | mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK; |
| 883 | else if (numeric <= 48) |
| 884 | from = to = XLFD_PIXEL_INDEX, |
| 885 | mask = XLFD_PIXEL_MASK; |
| 886 | else |
| 887 | from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 888 | mask = XLFD_LARGENUM_MASK; |
| 889 | } |
| 890 | else if (SBYTES (SYMBOL_NAME (val)) == 0) |
| 891 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ADSTYLE_INDEX, |
| 892 | mask = XLFD_NULL_MASK; |
| 893 | else if (i == 0) |
| 894 | from = to = XLFD_FOUNDRY_INDEX, mask = XLFD_FOUNDRY_MASK; |
| 895 | else if (i + 1 == n) |
| 896 | { |
| 897 | Lisp_Object name = SYMBOL_NAME (val); |
| 898 | |
| 899 | if (SDATA (name)[SBYTES (name) - 1] == '*') |
| 900 | from = XLFD_REGISTRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 901 | mask = XLFD_REGENC_MASK; |
| 902 | else |
| 903 | from = to = XLFD_ENCODING_INDEX, |
| 904 | mask = XLFD_ENCODING_MASK; |
| 905 | } |
| 906 | else if (range_from <= XLFD_WEIGHT_INDEX |
| 907 | && range_to >= XLFD_WEIGHT_INDEX |
| 908 | && FONT_WEIGHT_NAME_NUMERIC (val) >= 0) |
| 909 | from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK; |
| 910 | else if (range_from <= XLFD_SLANT_INDEX |
| 911 | && range_to >= XLFD_SLANT_INDEX |
| 912 | && FONT_SLANT_NAME_NUMERIC (val) >= 0) |
| 913 | from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK; |
| 914 | else if (range_from <= XLFD_SWIDTH_INDEX |
| 915 | && range_to >= XLFD_SWIDTH_INDEX |
| 916 | && FONT_WIDTH_NAME_NUMERIC (val) >= 0) |
| 917 | from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK; |
| 918 | else |
| 919 | { |
| 920 | if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd)) |
| 921 | from = to = XLFD_SPACING_INDEX, mask = XLFD_SPACING_MASK; |
| 922 | else |
| 923 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 924 | mask = XLFD_SYMBOL_MASK; |
| 925 | } |
| 926 | |
| 927 | /* Merge position-based and value-based restrictions. */ |
| 928 | mask &= range_mask; |
| 929 | while (from < range_from) |
| 930 | mask &= ~(1 << from++); |
| 931 | while (from < 14 && ! (mask & (1 << from))) |
| 932 | from++; |
| 933 | while (to > range_to) |
| 934 | mask &= ~(1 << to--); |
| 935 | while (to >= 0 && ! (mask & (1 << to))) |
| 936 | to--; |
| 937 | if (from > to) |
| 938 | return -1; |
| 939 | range[i].from = from; |
| 940 | range[i].to = to; |
| 941 | range[i].mask = mask; |
| 942 | |
| 943 | if (from > range_from || to < range_to) |
| 944 | { |
| 945 | /* The range is narrowed by value-based restrictions. |
| 946 | Reflect it to the other fields. */ |
| 947 | |
| 948 | /* Following fields should be after FROM. */ |
| 949 | range_from = from; |
| 950 | /* Preceding fields should be before TO. */ |
| 951 | for (j = i - 1, from--, to--; j >= 0; j--, from--, to--) |
| 952 | { |
| 953 | /* Check FROM for non-wildcard field. */ |
| 954 | if (! NILP (tmp[j]) && range[j].from < from) |
| 955 | { |
| 956 | while (range[j].from < from) |
| 957 | range[j].mask &= ~(1 << range[j].from++); |
| 958 | while (from < 14 && ! (range[j].mask & (1 << from))) |
| 959 | from++; |
| 960 | range[j].from = from; |
| 961 | } |
| 962 | else |
| 963 | from = range[j].from; |
| 964 | if (range[j].to > to) |
| 965 | { |
| 966 | while (range[j].to > to) |
| 967 | range[j].mask &= ~(1 << range[j].to--); |
| 968 | while (to >= 0 && ! (range[j].mask & (1 << to))) |
| 969 | to--; |
| 970 | range[j].to = to; |
| 971 | } |
| 972 | else |
| 973 | to = range[j].to; |
| 974 | if (from > to) |
| 975 | return -1; |
| 976 | } |
| 977 | } |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | /* Decide all fields from restrictions in RANGE. */ |
| 982 | for (i = j = 0; i < n ; i++) |
| 983 | { |
| 984 | if (j < range[i].from) |
| 985 | { |
| 986 | if (i == 0 || ! NILP (tmp[i - 1])) |
| 987 | /* None of TMP[X] corresponds to Jth field. */ |
| 988 | return -1; |
| 989 | for (; j < range[i].from; j++) |
| 990 | field[j] = Qnil; |
| 991 | } |
| 992 | field[j++] = tmp[i]; |
| 993 | } |
| 994 | if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX) |
| 995 | return -1; |
| 996 | for (; j < XLFD_LAST_INDEX; j++) |
| 997 | field[j] = Qnil; |
| 998 | if (INTEGERP (field[XLFD_ENCODING_INDEX])) |
| 999 | field[XLFD_ENCODING_INDEX] |
| 1000 | = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil); |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | /* Parse NAME (null terminated) as XLFD and store information in FONT |
| 1006 | (font-spec or font-entity). Size property of FONT is set as |
| 1007 | follows: |
| 1008 | specified XLFD fields FONT property |
| 1009 | --------------------- ------------- |
| 1010 | PIXEL_SIZE PIXEL_SIZE (Lisp integer) |
| 1011 | POINT_SIZE and RESY calculated pixel size (Lisp integer) |
| 1012 | POINT_SIZE POINT_SIZE/10 (Lisp float) |
| 1013 | |
| 1014 | If NAME is successfully parsed, return 0. Otherwise return -1. |
| 1015 | |
| 1016 | FONT is usually a font-spec, but when this function is called from |
| 1017 | X font backend driver, it is a font-entity. In that case, NAME is |
| 1018 | a fully specified XLFD. */ |
| 1019 | |
| 1020 | int |
| 1021 | font_parse_xlfd (char *name, ptrdiff_t len, Lisp_Object font) |
| 1022 | { |
| 1023 | int i, j, n; |
| 1024 | char *f[XLFD_LAST_INDEX + 1]; |
| 1025 | Lisp_Object val; |
| 1026 | char *p; |
| 1027 | |
| 1028 | if (len > 255 || !len) |
| 1029 | /* Maximum XLFD name length is 255. */ |
| 1030 | return -1; |
| 1031 | /* Accept "*-.." as a fully specified XLFD. */ |
| 1032 | if (name[0] == '*' && (len == 1 || name[1] == '-')) |
| 1033 | i = 1, f[XLFD_FOUNDRY_INDEX] = name; |
| 1034 | else |
| 1035 | i = 0; |
| 1036 | for (p = name + i; *p; p++) |
| 1037 | if (*p == '-') |
| 1038 | { |
| 1039 | f[i++] = p + 1; |
| 1040 | if (i == XLFD_LAST_INDEX) |
| 1041 | break; |
| 1042 | } |
| 1043 | f[i] = name + len; |
| 1044 | |
| 1045 | #define INTERN_FIELD(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 0) |
| 1046 | #define INTERN_FIELD_SYM(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 1) |
| 1047 | |
| 1048 | if (i == XLFD_LAST_INDEX) |
| 1049 | { |
| 1050 | /* Fully specified XLFD. */ |
| 1051 | int pixel_size; |
| 1052 | |
| 1053 | ASET (font, FONT_FOUNDRY_INDEX, INTERN_FIELD_SYM (XLFD_FOUNDRY_INDEX)); |
| 1054 | ASET (font, FONT_FAMILY_INDEX, INTERN_FIELD_SYM (XLFD_FAMILY_INDEX)); |
| 1055 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1056 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1057 | { |
| 1058 | val = INTERN_FIELD_SYM (i); |
| 1059 | if (! NILP (val)) |
| 1060 | { |
| 1061 | if ((n = font_style_to_value (j, INTERN_FIELD_SYM (i), 0)) < 0) |
| 1062 | return -1; |
| 1063 | ASET (font, j, make_number (n)); |
| 1064 | } |
| 1065 | } |
| 1066 | ASET (font, FONT_ADSTYLE_INDEX, INTERN_FIELD_SYM (XLFD_ADSTYLE_INDEX)); |
| 1067 | if (strcmp (f[XLFD_REGISTRY_INDEX], "*-*") == 0) |
| 1068 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 1069 | else |
| 1070 | ASET (font, FONT_REGISTRY_INDEX, |
| 1071 | font_intern_prop (f[XLFD_REGISTRY_INDEX], |
| 1072 | f[XLFD_LAST_INDEX] - f[XLFD_REGISTRY_INDEX], |
| 1073 | 1)); |
| 1074 | p = f[XLFD_PIXEL_INDEX]; |
| 1075 | if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0) |
| 1076 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 1077 | else |
| 1078 | { |
| 1079 | val = INTERN_FIELD (XLFD_PIXEL_INDEX); |
| 1080 | if (INTEGERP (val)) |
| 1081 | ASET (font, FONT_SIZE_INDEX, val); |
| 1082 | else if (FONT_ENTITY_P (font)) |
| 1083 | return -1; |
| 1084 | else |
| 1085 | { |
| 1086 | double point_size = -1; |
| 1087 | |
| 1088 | eassert (FONT_SPEC_P (font)); |
| 1089 | p = f[XLFD_POINT_INDEX]; |
| 1090 | if (*p == '[') |
| 1091 | point_size = parse_matrix (p); |
| 1092 | else if (c_isdigit (*p)) |
| 1093 | point_size = atoi (p), point_size /= 10; |
| 1094 | if (point_size >= 0) |
| 1095 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | val = INTERN_FIELD (XLFD_RESY_INDEX); |
| 1100 | if (! NILP (val) && ! INTEGERP (val)) |
| 1101 | return -1; |
| 1102 | ASET (font, FONT_DPI_INDEX, val); |
| 1103 | val = INTERN_FIELD (XLFD_SPACING_INDEX); |
| 1104 | if (! NILP (val)) |
| 1105 | { |
| 1106 | val = font_prop_validate_spacing (QCspacing, val); |
| 1107 | if (! INTEGERP (val)) |
| 1108 | return -1; |
| 1109 | ASET (font, FONT_SPACING_INDEX, val); |
| 1110 | } |
| 1111 | p = f[XLFD_AVGWIDTH_INDEX]; |
| 1112 | if (*p == '~') |
| 1113 | p++; |
| 1114 | val = font_intern_prop (p, f[XLFD_REGISTRY_INDEX] - 1 - p, 0); |
| 1115 | if (! NILP (val) && ! INTEGERP (val)) |
| 1116 | return -1; |
| 1117 | ASET (font, FONT_AVGWIDTH_INDEX, val); |
| 1118 | } |
| 1119 | else |
| 1120 | { |
| 1121 | bool wild_card_found = 0; |
| 1122 | Lisp_Object prop[XLFD_LAST_INDEX]; |
| 1123 | |
| 1124 | if (FONT_ENTITY_P (font)) |
| 1125 | return -1; |
| 1126 | for (j = 0; j < i; j++) |
| 1127 | { |
| 1128 | if (*f[j] == '*') |
| 1129 | { |
| 1130 | if (f[j][1] && f[j][1] != '-') |
| 1131 | return -1; |
| 1132 | prop[j] = Qnil; |
| 1133 | wild_card_found = 1; |
| 1134 | } |
| 1135 | else if (j + 1 < i) |
| 1136 | prop[j] = INTERN_FIELD (j); |
| 1137 | else |
| 1138 | prop[j] = font_intern_prop (f[j], f[i] - f[j], 0); |
| 1139 | } |
| 1140 | if (! wild_card_found) |
| 1141 | return -1; |
| 1142 | if (font_expand_wildcards (prop, i) < 0) |
| 1143 | return -1; |
| 1144 | |
| 1145 | ASET (font, FONT_FOUNDRY_INDEX, prop[XLFD_FOUNDRY_INDEX]); |
| 1146 | ASET (font, FONT_FAMILY_INDEX, prop[XLFD_FAMILY_INDEX]); |
| 1147 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1148 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1149 | if (! NILP (prop[i])) |
| 1150 | { |
| 1151 | if ((n = font_style_to_value (j, prop[i], 1)) < 0) |
| 1152 | return -1; |
| 1153 | ASET (font, j, make_number (n)); |
| 1154 | } |
| 1155 | ASET (font, FONT_ADSTYLE_INDEX, prop[XLFD_ADSTYLE_INDEX]); |
| 1156 | val = prop[XLFD_REGISTRY_INDEX]; |
| 1157 | if (NILP (val)) |
| 1158 | { |
| 1159 | val = prop[XLFD_ENCODING_INDEX]; |
| 1160 | if (! NILP (val)) |
| 1161 | val = concat2 (build_string ("*-"), SYMBOL_NAME (val)); |
| 1162 | } |
| 1163 | else if (NILP (prop[XLFD_ENCODING_INDEX])) |
| 1164 | val = concat2 (SYMBOL_NAME (val), build_string ("-*")); |
| 1165 | else |
| 1166 | val = concat3 (SYMBOL_NAME (val), build_string ("-"), |
| 1167 | SYMBOL_NAME (prop[XLFD_ENCODING_INDEX])); |
| 1168 | if (! NILP (val)) |
| 1169 | ASET (font, FONT_REGISTRY_INDEX, Fintern (val, Qnil)); |
| 1170 | |
| 1171 | if (INTEGERP (prop[XLFD_PIXEL_INDEX])) |
| 1172 | ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]); |
| 1173 | else if (INTEGERP (prop[XLFD_POINT_INDEX])) |
| 1174 | { |
| 1175 | double point_size = XINT (prop[XLFD_POINT_INDEX]); |
| 1176 | |
| 1177 | ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10)); |
| 1178 | } |
| 1179 | |
| 1180 | if (INTEGERP (prop[XLFD_RESX_INDEX])) |
| 1181 | ASET (font, FONT_DPI_INDEX, prop[XLFD_RESY_INDEX]); |
| 1182 | if (! NILP (prop[XLFD_SPACING_INDEX])) |
| 1183 | { |
| 1184 | val = font_prop_validate_spacing (QCspacing, |
| 1185 | prop[XLFD_SPACING_INDEX]); |
| 1186 | if (! INTEGERP (val)) |
| 1187 | return -1; |
| 1188 | ASET (font, FONT_SPACING_INDEX, val); |
| 1189 | } |
| 1190 | if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX])) |
| 1191 | ASET (font, FONT_AVGWIDTH_INDEX, prop[XLFD_AVGWIDTH_INDEX]); |
| 1192 | } |
| 1193 | |
| 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES |
| 1198 | length), and return the name length. If FONT_SIZE_INDEX of FONT is |
| 1199 | 0, use PIXEL_SIZE instead. */ |
| 1200 | |
| 1201 | ptrdiff_t |
| 1202 | font_unparse_xlfd (Lisp_Object font, int pixel_size, char *name, int nbytes) |
| 1203 | { |
| 1204 | char *p; |
| 1205 | const char *f[XLFD_REGISTRY_INDEX + 1]; |
| 1206 | Lisp_Object val; |
| 1207 | int i, j, len; |
| 1208 | |
| 1209 | eassert (FONTP (font)); |
| 1210 | |
| 1211 | for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; |
| 1212 | i++, j++) |
| 1213 | { |
| 1214 | if (i == FONT_ADSTYLE_INDEX) |
| 1215 | j = XLFD_ADSTYLE_INDEX; |
| 1216 | else if (i == FONT_REGISTRY_INDEX) |
| 1217 | j = XLFD_REGISTRY_INDEX; |
| 1218 | val = AREF (font, i); |
| 1219 | if (NILP (val)) |
| 1220 | { |
| 1221 | if (j == XLFD_REGISTRY_INDEX) |
| 1222 | f[j] = "*-*"; |
| 1223 | else |
| 1224 | f[j] = "*"; |
| 1225 | } |
| 1226 | else |
| 1227 | { |
| 1228 | if (SYMBOLP (val)) |
| 1229 | val = SYMBOL_NAME (val); |
| 1230 | if (j == XLFD_REGISTRY_INDEX |
| 1231 | && ! strchr (SSDATA (val), '-')) |
| 1232 | { |
| 1233 | /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */ |
| 1234 | ptrdiff_t alloc = SBYTES (val) + 4; |
| 1235 | if (nbytes <= alloc) |
| 1236 | return -1; |
| 1237 | f[j] = p = alloca (alloc); |
| 1238 | sprintf (p, "%s%s-*", SDATA (val), |
| 1239 | &"*"[SDATA (val)[SBYTES (val) - 1] == '*']); |
| 1240 | } |
| 1241 | else |
| 1242 | f[j] = SSDATA (val); |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; |
| 1247 | i++, j++) |
| 1248 | { |
| 1249 | val = font_style_symbolic (font, i, 0); |
| 1250 | if (NILP (val)) |
| 1251 | f[j] = "*"; |
| 1252 | else |
| 1253 | { |
| 1254 | int c, k, l; |
| 1255 | ptrdiff_t alloc; |
| 1256 | |
| 1257 | val = SYMBOL_NAME (val); |
| 1258 | alloc = SBYTES (val) + 1; |
| 1259 | if (nbytes <= alloc) |
| 1260 | return -1; |
| 1261 | f[j] = p = alloca (alloc); |
| 1262 | /* Copy the name while excluding '-', '?', ',', and '"'. */ |
| 1263 | for (k = l = 0; k < alloc; k++) |
| 1264 | { |
| 1265 | c = SREF (val, k); |
| 1266 | if (c != '-' && c != '?' && c != ',' && c != '"') |
| 1267 | p[l++] = c; |
| 1268 | } |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | val = AREF (font, FONT_SIZE_INDEX); |
| 1273 | eassert (NUMBERP (val) || NILP (val)); |
| 1274 | if (INTEGERP (val)) |
| 1275 | { |
| 1276 | EMACS_INT v = XINT (val); |
| 1277 | if (v <= 0) |
| 1278 | v = pixel_size; |
| 1279 | if (v > 0) |
| 1280 | { |
| 1281 | f[XLFD_PIXEL_INDEX] = p = |
| 1282 | alloca (sizeof "-*" + INT_STRLEN_BOUND (EMACS_INT)); |
| 1283 | sprintf (p, "%"pI"d-*", v); |
| 1284 | } |
| 1285 | else |
| 1286 | f[XLFD_PIXEL_INDEX] = "*-*"; |
| 1287 | } |
| 1288 | else if (FLOATP (val)) |
| 1289 | { |
| 1290 | double v = XFLOAT_DATA (val) * 10; |
| 1291 | f[XLFD_PIXEL_INDEX] = p = alloca (sizeof "*-" + 1 + DBL_MAX_10_EXP + 1); |
| 1292 | sprintf (p, "*-%.0f", v); |
| 1293 | } |
| 1294 | else |
| 1295 | f[XLFD_PIXEL_INDEX] = "*-*"; |
| 1296 | |
| 1297 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1298 | { |
| 1299 | EMACS_INT v = XINT (AREF (font, FONT_DPI_INDEX)); |
| 1300 | f[XLFD_RESX_INDEX] = p = |
| 1301 | alloca (sizeof "-" + 2 * INT_STRLEN_BOUND (EMACS_INT)); |
| 1302 | sprintf (p, "%"pI"d-%"pI"d", v, v); |
| 1303 | } |
| 1304 | else |
| 1305 | f[XLFD_RESX_INDEX] = "*-*"; |
| 1306 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1307 | { |
| 1308 | EMACS_INT spacing = XINT (AREF (font, FONT_SPACING_INDEX)); |
| 1309 | |
| 1310 | f[XLFD_SPACING_INDEX] = (spacing <= FONT_SPACING_PROPORTIONAL ? "p" |
| 1311 | : spacing <= FONT_SPACING_DUAL ? "d" |
| 1312 | : spacing <= FONT_SPACING_MONO ? "m" |
| 1313 | : "c"); |
| 1314 | } |
| 1315 | else |
| 1316 | f[XLFD_SPACING_INDEX] = "*"; |
| 1317 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1318 | { |
| 1319 | f[XLFD_AVGWIDTH_INDEX] = p = alloca (INT_BUFSIZE_BOUND (EMACS_INT)); |
| 1320 | sprintf (p, "%"pI"d", XINT (AREF (font, FONT_AVGWIDTH_INDEX))); |
| 1321 | } |
| 1322 | else |
| 1323 | f[XLFD_AVGWIDTH_INDEX] = "*"; |
| 1324 | len = snprintf (name, nbytes, "-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s", |
| 1325 | f[XLFD_FOUNDRY_INDEX], f[XLFD_FAMILY_INDEX], |
| 1326 | f[XLFD_WEIGHT_INDEX], f[XLFD_SLANT_INDEX], |
| 1327 | f[XLFD_SWIDTH_INDEX], f[XLFD_ADSTYLE_INDEX], |
| 1328 | f[XLFD_PIXEL_INDEX], f[XLFD_RESX_INDEX], |
| 1329 | f[XLFD_SPACING_INDEX], f[XLFD_AVGWIDTH_INDEX], |
| 1330 | f[XLFD_REGISTRY_INDEX]); |
| 1331 | return len < nbytes ? len : -1; |
| 1332 | } |
| 1333 | |
| 1334 | /* Parse NAME (null terminated) and store information in FONT |
| 1335 | (font-spec or font-entity). NAME is supplied in either the |
| 1336 | Fontconfig or GTK font name format. If NAME is successfully |
| 1337 | parsed, return 0. Otherwise return -1. |
| 1338 | |
| 1339 | The fontconfig format is |
| 1340 | |
| 1341 | FAMILY[-SIZE][:PROP1[=VAL1][:PROP2[=VAL2]...]] |
| 1342 | |
| 1343 | The GTK format is |
| 1344 | |
| 1345 | FAMILY [PROPS...] [SIZE] |
| 1346 | |
| 1347 | This function tries to guess which format it is. */ |
| 1348 | |
| 1349 | static int |
| 1350 | font_parse_fcname (char *name, ptrdiff_t len, Lisp_Object font) |
| 1351 | { |
| 1352 | char *p, *q; |
| 1353 | char *size_beg = NULL, *size_end = NULL; |
| 1354 | char *props_beg = NULL, *family_end = NULL; |
| 1355 | |
| 1356 | if (len == 0) |
| 1357 | return -1; |
| 1358 | |
| 1359 | for (p = name; *p; p++) |
| 1360 | { |
| 1361 | if (*p == '\\' && p[1]) |
| 1362 | p++; |
| 1363 | else if (*p == ':') |
| 1364 | { |
| 1365 | props_beg = family_end = p; |
| 1366 | break; |
| 1367 | } |
| 1368 | else if (*p == '-') |
| 1369 | { |
| 1370 | bool decimal = 0, size_found = 1; |
| 1371 | for (q = p + 1; *q && *q != ':'; q++) |
| 1372 | if (! c_isdigit (*q)) |
| 1373 | { |
| 1374 | if (*q != '.' || decimal) |
| 1375 | { |
| 1376 | size_found = 0; |
| 1377 | break; |
| 1378 | } |
| 1379 | decimal = 1; |
| 1380 | } |
| 1381 | if (size_found) |
| 1382 | { |
| 1383 | family_end = p; |
| 1384 | size_beg = p + 1; |
| 1385 | size_end = q; |
| 1386 | break; |
| 1387 | } |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | if (family_end) |
| 1392 | { |
| 1393 | Lisp_Object extra_props = Qnil; |
| 1394 | |
| 1395 | /* A fontconfig name with size and/or property data. */ |
| 1396 | if (family_end > name) |
| 1397 | { |
| 1398 | Lisp_Object family; |
| 1399 | family = font_intern_prop (name, family_end - name, 1); |
| 1400 | ASET (font, FONT_FAMILY_INDEX, family); |
| 1401 | } |
| 1402 | if (size_beg) |
| 1403 | { |
| 1404 | double point_size = strtod (size_beg, &size_end); |
| 1405 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1406 | if (*size_end == ':' && size_end[1]) |
| 1407 | props_beg = size_end; |
| 1408 | } |
| 1409 | if (props_beg) |
| 1410 | { |
| 1411 | /* Now parse ":KEY=VAL" patterns. */ |
| 1412 | Lisp_Object val; |
| 1413 | |
| 1414 | for (p = props_beg; *p; p = q) |
| 1415 | { |
| 1416 | for (q = p + 1; *q && *q != '=' && *q != ':'; q++); |
| 1417 | if (*q != '=') |
| 1418 | { |
| 1419 | /* Must be an enumerated value. */ |
| 1420 | ptrdiff_t word_len; |
| 1421 | p = p + 1; |
| 1422 | word_len = q - p; |
| 1423 | val = font_intern_prop (p, q - p, 1); |
| 1424 | |
| 1425 | #define PROP_MATCH(STR) (word_len == strlen (STR) \ |
| 1426 | && memcmp (p, STR, strlen (STR)) == 0) |
| 1427 | |
| 1428 | if (PROP_MATCH ("light") |
| 1429 | || PROP_MATCH ("medium") |
| 1430 | || PROP_MATCH ("demibold") |
| 1431 | || PROP_MATCH ("bold") |
| 1432 | || PROP_MATCH ("black")) |
| 1433 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, val); |
| 1434 | else if (PROP_MATCH ("roman") |
| 1435 | || PROP_MATCH ("italic") |
| 1436 | || PROP_MATCH ("oblique")) |
| 1437 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, val); |
| 1438 | else if (PROP_MATCH ("charcell")) |
| 1439 | ASET (font, FONT_SPACING_INDEX, |
| 1440 | make_number (FONT_SPACING_CHARCELL)); |
| 1441 | else if (PROP_MATCH ("mono")) |
| 1442 | ASET (font, FONT_SPACING_INDEX, |
| 1443 | make_number (FONT_SPACING_MONO)); |
| 1444 | else if (PROP_MATCH ("proportional")) |
| 1445 | ASET (font, FONT_SPACING_INDEX, |
| 1446 | make_number (FONT_SPACING_PROPORTIONAL)); |
| 1447 | #undef PROP_MATCH |
| 1448 | } |
| 1449 | else |
| 1450 | { |
| 1451 | /* KEY=VAL pairs */ |
| 1452 | Lisp_Object key; |
| 1453 | int prop; |
| 1454 | |
| 1455 | if (q - p == 10 && memcmp (p + 1, "pixelsize", 9) == 0) |
| 1456 | prop = FONT_SIZE_INDEX; |
| 1457 | else |
| 1458 | { |
| 1459 | key = font_intern_prop (p, q - p, 1); |
| 1460 | prop = get_font_prop_index (key); |
| 1461 | } |
| 1462 | |
| 1463 | p = q + 1; |
| 1464 | for (q = p; *q && *q != ':'; q++); |
| 1465 | val = font_intern_prop (p, q - p, 0); |
| 1466 | |
| 1467 | if (prop >= FONT_FOUNDRY_INDEX |
| 1468 | && prop < FONT_EXTRA_INDEX) |
| 1469 | ASET (font, prop, font_prop_validate (prop, Qnil, val)); |
| 1470 | else |
| 1471 | { |
| 1472 | extra_props = nconc2 (extra_props, |
| 1473 | list1 (Fcons (key, val))); |
| 1474 | } |
| 1475 | } |
| 1476 | p = q; |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | if (! NILP (extra_props)) |
| 1481 | { |
| 1482 | struct font_driver_list *driver_list = font_driver_list; |
| 1483 | for ( ; driver_list; driver_list = driver_list->next) |
| 1484 | if (driver_list->driver->filter_properties) |
| 1485 | (*driver_list->driver->filter_properties) (font, extra_props); |
| 1486 | } |
| 1487 | |
| 1488 | } |
| 1489 | else |
| 1490 | { |
| 1491 | /* Either a fontconfig-style name with no size and property |
| 1492 | data, or a GTK-style name. */ |
| 1493 | Lisp_Object weight = Qnil, slant = Qnil; |
| 1494 | Lisp_Object width = Qnil, size = Qnil; |
| 1495 | char *word_start; |
| 1496 | ptrdiff_t word_len; |
| 1497 | |
| 1498 | /* Scan backwards from the end, looking for a size. */ |
| 1499 | for (p = name + len - 1; p >= name; p--) |
| 1500 | if (!c_isdigit (*p)) |
| 1501 | break; |
| 1502 | |
| 1503 | if ((p < name + len - 1) && ((p + 1 == name) || *p == ' ')) |
| 1504 | /* Found a font size. */ |
| 1505 | size = make_float (strtod (p + 1, NULL)); |
| 1506 | else |
| 1507 | p = name + len; |
| 1508 | |
| 1509 | /* Now P points to the termination of the string, sans size. |
| 1510 | Scan backwards, looking for font properties. */ |
| 1511 | for (; p > name; p = q) |
| 1512 | { |
| 1513 | for (q = p - 1; q >= name; q--) |
| 1514 | { |
| 1515 | if (q > name && *(q-1) == '\\') |
| 1516 | --q; /* Skip quoting backslashes. */ |
| 1517 | else if (*q == ' ') |
| 1518 | break; |
| 1519 | } |
| 1520 | |
| 1521 | word_start = q + 1; |
| 1522 | word_len = p - word_start; |
| 1523 | |
| 1524 | #define PROP_MATCH(STR) \ |
| 1525 | (word_len == strlen (STR) \ |
| 1526 | && memcmp (word_start, STR, strlen (STR)) == 0) |
| 1527 | #define PROP_SAVE(VAR, STR) \ |
| 1528 | (VAR = NILP (VAR) ? font_intern_prop (STR, strlen (STR), 1) : VAR) |
| 1529 | |
| 1530 | if (PROP_MATCH ("Ultra-Light")) |
| 1531 | PROP_SAVE (weight, "ultra-light"); |
| 1532 | else if (PROP_MATCH ("Light")) |
| 1533 | PROP_SAVE (weight, "light"); |
| 1534 | else if (PROP_MATCH ("Book")) |
| 1535 | PROP_SAVE (weight, "book"); |
| 1536 | else if (PROP_MATCH ("Medium")) |
| 1537 | PROP_SAVE (weight, "medium"); |
| 1538 | else if (PROP_MATCH ("Semi-Bold")) |
| 1539 | PROP_SAVE (weight, "semi-bold"); |
| 1540 | else if (PROP_MATCH ("Bold")) |
| 1541 | PROP_SAVE (weight, "bold"); |
| 1542 | else if (PROP_MATCH ("Italic")) |
| 1543 | PROP_SAVE (slant, "italic"); |
| 1544 | else if (PROP_MATCH ("Oblique")) |
| 1545 | PROP_SAVE (slant, "oblique"); |
| 1546 | else if (PROP_MATCH ("Semi-Condensed")) |
| 1547 | PROP_SAVE (width, "semi-condensed"); |
| 1548 | else if (PROP_MATCH ("Condensed")) |
| 1549 | PROP_SAVE (width, "condensed"); |
| 1550 | /* An unknown word must be part of the font name. */ |
| 1551 | else |
| 1552 | { |
| 1553 | family_end = p; |
| 1554 | break; |
| 1555 | } |
| 1556 | } |
| 1557 | #undef PROP_MATCH |
| 1558 | #undef PROP_SAVE |
| 1559 | |
| 1560 | if (family_end) |
| 1561 | ASET (font, FONT_FAMILY_INDEX, |
| 1562 | font_intern_prop (name, family_end - name, 1)); |
| 1563 | if (!NILP (size)) |
| 1564 | ASET (font, FONT_SIZE_INDEX, size); |
| 1565 | if (!NILP (weight)) |
| 1566 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, weight); |
| 1567 | if (!NILP (slant)) |
| 1568 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, slant); |
| 1569 | if (!NILP (width)) |
| 1570 | FONT_SET_STYLE (font, FONT_WIDTH_INDEX, width); |
| 1571 | } |
| 1572 | |
| 1573 | return 0; |
| 1574 | } |
| 1575 | |
| 1576 | /* Store fontconfig's font name of FONT (font-spec or font-entity) in |
| 1577 | NAME (NBYTES length), and return the name length. If |
| 1578 | FONT_SIZE_INDEX of FONT is 0, use PIXEL_SIZE instead. */ |
| 1579 | |
| 1580 | int |
| 1581 | font_unparse_fcname (Lisp_Object font, int pixel_size, char *name, int nbytes) |
| 1582 | { |
| 1583 | Lisp_Object family, foundry; |
| 1584 | Lisp_Object val; |
| 1585 | int point_size; |
| 1586 | int i; |
| 1587 | char *p; |
| 1588 | char *lim; |
| 1589 | Lisp_Object styles[3]; |
| 1590 | const char *style_names[3] = { "weight", "slant", "width" }; |
| 1591 | |
| 1592 | family = AREF (font, FONT_FAMILY_INDEX); |
| 1593 | if (! NILP (family)) |
| 1594 | { |
| 1595 | if (SYMBOLP (family)) |
| 1596 | family = SYMBOL_NAME (family); |
| 1597 | else |
| 1598 | family = Qnil; |
| 1599 | } |
| 1600 | |
| 1601 | val = AREF (font, FONT_SIZE_INDEX); |
| 1602 | if (INTEGERP (val)) |
| 1603 | { |
| 1604 | if (XINT (val) != 0) |
| 1605 | pixel_size = XINT (val); |
| 1606 | point_size = -1; |
| 1607 | } |
| 1608 | else |
| 1609 | { |
| 1610 | eassert (FLOATP (val)); |
| 1611 | pixel_size = -1; |
| 1612 | point_size = (int) XFLOAT_DATA (val); |
| 1613 | } |
| 1614 | |
| 1615 | foundry = AREF (font, FONT_FOUNDRY_INDEX); |
| 1616 | if (! NILP (foundry)) |
| 1617 | { |
| 1618 | if (SYMBOLP (foundry)) |
| 1619 | foundry = SYMBOL_NAME (foundry); |
| 1620 | else |
| 1621 | foundry = Qnil; |
| 1622 | } |
| 1623 | |
| 1624 | for (i = 0; i < 3; i++) |
| 1625 | styles[i] = font_style_symbolic (font, FONT_WEIGHT_INDEX + i, 0); |
| 1626 | |
| 1627 | p = name; |
| 1628 | lim = name + nbytes; |
| 1629 | if (! NILP (family)) |
| 1630 | { |
| 1631 | int len = snprintf (p, lim - p, "%s", SSDATA (family)); |
| 1632 | if (! (0 <= len && len < lim - p)) |
| 1633 | return -1; |
| 1634 | p += len; |
| 1635 | } |
| 1636 | if (point_size > 0) |
| 1637 | { |
| 1638 | int len = snprintf (p, lim - p, &"-%d"[p == name], point_size); |
| 1639 | if (! (0 <= len && len < lim - p)) |
| 1640 | return -1; |
| 1641 | p += len; |
| 1642 | } |
| 1643 | else if (pixel_size > 0) |
| 1644 | { |
| 1645 | int len = snprintf (p, lim - p, ":pixelsize=%d", pixel_size); |
| 1646 | if (! (0 <= len && len < lim - p)) |
| 1647 | return -1; |
| 1648 | p += len; |
| 1649 | } |
| 1650 | if (! NILP (AREF (font, FONT_FOUNDRY_INDEX))) |
| 1651 | { |
| 1652 | int len = snprintf (p, lim - p, ":foundry=%s", |
| 1653 | SSDATA (SYMBOL_NAME (AREF (font, |
| 1654 | FONT_FOUNDRY_INDEX)))); |
| 1655 | if (! (0 <= len && len < lim - p)) |
| 1656 | return -1; |
| 1657 | p += len; |
| 1658 | } |
| 1659 | for (i = 0; i < 3; i++) |
| 1660 | if (! NILP (styles[i])) |
| 1661 | { |
| 1662 | int len = snprintf (p, lim - p, ":%s=%s", style_names[i], |
| 1663 | SSDATA (SYMBOL_NAME (styles[i]))); |
| 1664 | if (! (0 <= len && len < lim - p)) |
| 1665 | return -1; |
| 1666 | p += len; |
| 1667 | } |
| 1668 | |
| 1669 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1670 | { |
| 1671 | int len = snprintf (p, lim - p, ":dpi=%"pI"d", |
| 1672 | XINT (AREF (font, FONT_DPI_INDEX))); |
| 1673 | if (! (0 <= len && len < lim - p)) |
| 1674 | return -1; |
| 1675 | p += len; |
| 1676 | } |
| 1677 | |
| 1678 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1679 | { |
| 1680 | int len = snprintf (p, lim - p, ":spacing=%"pI"d", |
| 1681 | XINT (AREF (font, FONT_SPACING_INDEX))); |
| 1682 | if (! (0 <= len && len < lim - p)) |
| 1683 | return -1; |
| 1684 | p += len; |
| 1685 | } |
| 1686 | |
| 1687 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1688 | { |
| 1689 | int len = snprintf (p, lim - p, |
| 1690 | (XINT (AREF (font, FONT_AVGWIDTH_INDEX)) == 0 |
| 1691 | ? ":scalable=true" |
| 1692 | : ":scalable=false")); |
| 1693 | if (! (0 <= len && len < lim - p)) |
| 1694 | return -1; |
| 1695 | p += len; |
| 1696 | } |
| 1697 | |
| 1698 | return (p - name); |
| 1699 | } |
| 1700 | |
| 1701 | /* Parse NAME (null terminated) and store information in FONT |
| 1702 | (font-spec or font-entity). If NAME is successfully parsed, return |
| 1703 | 0. Otherwise return -1. */ |
| 1704 | |
| 1705 | static int |
| 1706 | font_parse_name (char *name, ptrdiff_t namelen, Lisp_Object font) |
| 1707 | { |
| 1708 | if (name[0] == '-' || strchr (name, '*') || strchr (name, '?')) |
| 1709 | return font_parse_xlfd (name, namelen, font); |
| 1710 | return font_parse_fcname (name, namelen, font); |
| 1711 | } |
| 1712 | |
| 1713 | |
| 1714 | /* Merge FAMILY and REGISTRY into FONT_SPEC. FAMILY may have the form |
| 1715 | "FAMILY-FOUNDRY". REGISTRY may not contain charset-encoding |
| 1716 | part. */ |
| 1717 | |
| 1718 | void |
| 1719 | font_parse_family_registry (Lisp_Object family, Lisp_Object registry, Lisp_Object font_spec) |
| 1720 | { |
| 1721 | int len; |
| 1722 | char *p0, *p1; |
| 1723 | |
| 1724 | if (! NILP (family) |
| 1725 | && NILP (AREF (font_spec, FONT_FAMILY_INDEX))) |
| 1726 | { |
| 1727 | CHECK_STRING (family); |
| 1728 | len = SBYTES (family); |
| 1729 | p0 = SSDATA (family); |
| 1730 | p1 = strchr (p0, '-'); |
| 1731 | if (p1) |
| 1732 | { |
| 1733 | if ((*p0 != '*' && p1 - p0 > 0) |
| 1734 | && NILP (AREF (font_spec, FONT_FOUNDRY_INDEX))) |
| 1735 | Ffont_put (font_spec, QCfoundry, font_intern_prop (p0, p1 - p0, 1)); |
| 1736 | p1++; |
| 1737 | len -= p1 - p0; |
| 1738 | Ffont_put (font_spec, QCfamily, font_intern_prop (p1, len, 1)); |
| 1739 | } |
| 1740 | else |
| 1741 | ASET (font_spec, FONT_FAMILY_INDEX, Fintern (family, Qnil)); |
| 1742 | } |
| 1743 | if (! NILP (registry)) |
| 1744 | { |
| 1745 | /* Convert "XXX" and "XXX*" to "XXX*-*". */ |
| 1746 | CHECK_STRING (registry); |
| 1747 | len = SBYTES (registry); |
| 1748 | p0 = SSDATA (registry); |
| 1749 | p1 = strchr (p0, '-'); |
| 1750 | if (! p1) |
| 1751 | { |
| 1752 | if (SDATA (registry)[len - 1] == '*') |
| 1753 | registry = concat2 (registry, build_string ("-*")); |
| 1754 | else |
| 1755 | registry = concat2 (registry, build_string ("*-*")); |
| 1756 | } |
| 1757 | registry = Fdowncase (registry); |
| 1758 | ASET (font_spec, FONT_REGISTRY_INDEX, Fintern (registry, Qnil)); |
| 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | \f |
| 1763 | /* This part (through the next ^L) is still experimental and not |
| 1764 | tested much. We may drastically change codes. */ |
| 1765 | |
| 1766 | /* OTF handler. */ |
| 1767 | |
| 1768 | #if 0 |
| 1769 | |
| 1770 | #define LGSTRING_HEADER_SIZE 6 |
| 1771 | #define LGSTRING_GLYPH_SIZE 8 |
| 1772 | |
| 1773 | static int |
| 1774 | check_gstring (Lisp_Object gstring) |
| 1775 | { |
| 1776 | Lisp_Object val; |
| 1777 | ptrdiff_t i; |
| 1778 | int j; |
| 1779 | |
| 1780 | CHECK_VECTOR (gstring); |
| 1781 | val = AREF (gstring, 0); |
| 1782 | CHECK_VECTOR (val); |
| 1783 | if (ASIZE (val) < LGSTRING_HEADER_SIZE) |
| 1784 | goto err; |
| 1785 | CHECK_FONT_OBJECT (LGSTRING_FONT (gstring)); |
| 1786 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING))) |
| 1787 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING)); |
| 1788 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING))) |
| 1789 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING)); |
| 1790 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH))) |
| 1791 | CHECK_NATNUM (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH)); |
| 1792 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1793 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1794 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1795 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1796 | |
| 1797 | for (i = 0; i < LGSTRING_GLYPH_LEN (gstring); i++) |
| 1798 | { |
| 1799 | val = LGSTRING_GLYPH (gstring, i); |
| 1800 | CHECK_VECTOR (val); |
| 1801 | if (ASIZE (val) < LGSTRING_GLYPH_SIZE) |
| 1802 | goto err; |
| 1803 | if (NILP (AREF (val, LGLYPH_IX_CHAR))) |
| 1804 | break; |
| 1805 | CHECK_NATNUM (AREF (val, LGLYPH_IX_FROM)); |
| 1806 | CHECK_NATNUM (AREF (val, LGLYPH_IX_TO)); |
| 1807 | CHECK_CHARACTER (AREF (val, LGLYPH_IX_CHAR)); |
| 1808 | if (!NILP (AREF (val, LGLYPH_IX_CODE))) |
| 1809 | CHECK_NATNUM (AREF (val, LGLYPH_IX_CODE)); |
| 1810 | if (!NILP (AREF (val, LGLYPH_IX_WIDTH))) |
| 1811 | CHECK_NATNUM (AREF (val, LGLYPH_IX_WIDTH)); |
| 1812 | if (!NILP (AREF (val, LGLYPH_IX_ADJUSTMENT))) |
| 1813 | { |
| 1814 | val = AREF (val, LGLYPH_IX_ADJUSTMENT); |
| 1815 | CHECK_VECTOR (val); |
| 1816 | if (ASIZE (val) < 3) |
| 1817 | goto err; |
| 1818 | for (j = 0; j < 3; j++) |
| 1819 | CHECK_NUMBER (AREF (val, j)); |
| 1820 | } |
| 1821 | } |
| 1822 | return i; |
| 1823 | err: |
| 1824 | error ("Invalid glyph-string format"); |
| 1825 | return -1; |
| 1826 | } |
| 1827 | |
| 1828 | static void |
| 1829 | check_otf_features (Lisp_Object otf_features) |
| 1830 | { |
| 1831 | Lisp_Object val; |
| 1832 | |
| 1833 | CHECK_CONS (otf_features); |
| 1834 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1835 | otf_features = XCDR (otf_features); |
| 1836 | CHECK_CONS (otf_features); |
| 1837 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1838 | otf_features = XCDR (otf_features); |
| 1839 | for (val = Fcar (otf_features); CONSP (val); val = XCDR (val)) |
| 1840 | { |
| 1841 | CHECK_SYMBOL (XCAR (val)); |
| 1842 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1843 | error ("Invalid OTF GSUB feature: %s", |
| 1844 | SDATA (SYMBOL_NAME (XCAR (val)))); |
| 1845 | } |
| 1846 | otf_features = XCDR (otf_features); |
| 1847 | for (val = Fcar (otf_features); CONSP (val); val = XCDR (val)) |
| 1848 | { |
| 1849 | CHECK_SYMBOL (XCAR (val)); |
| 1850 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1851 | error ("Invalid OTF GPOS feature: %s", |
| 1852 | SDATA (SYMBOL_NAME (XCAR (val)))); |
| 1853 | } |
| 1854 | } |
| 1855 | |
| 1856 | #ifdef HAVE_LIBOTF |
| 1857 | #include <otf.h> |
| 1858 | |
| 1859 | Lisp_Object otf_list; |
| 1860 | |
| 1861 | static Lisp_Object |
| 1862 | otf_tag_symbol (OTF_Tag tag) |
| 1863 | { |
| 1864 | char name[5]; |
| 1865 | |
| 1866 | OTF_tag_name (tag, name); |
| 1867 | return Fintern (make_unibyte_string (name, 4), Qnil); |
| 1868 | } |
| 1869 | |
| 1870 | static OTF * |
| 1871 | otf_open (Lisp_Object file) |
| 1872 | { |
| 1873 | Lisp_Object val = Fassoc (file, otf_list); |
| 1874 | OTF *otf; |
| 1875 | |
| 1876 | if (! NILP (val)) |
| 1877 | otf = XSAVE_POINTER (XCDR (val), 0); |
| 1878 | else |
| 1879 | { |
| 1880 | otf = STRINGP (file) ? OTF_open (SSDATA (file)) : NULL; |
| 1881 | val = make_save_ptr (otf); |
| 1882 | otf_list = Fcons (Fcons (file, val), otf_list); |
| 1883 | } |
| 1884 | return otf; |
| 1885 | } |
| 1886 | |
| 1887 | |
| 1888 | /* Return a list describing which scripts/languages FONT supports by |
| 1889 | which GSUB/GPOS features of OpenType tables. See the comment of |
| 1890 | (struct font_driver).otf_capability. */ |
| 1891 | |
| 1892 | Lisp_Object |
| 1893 | font_otf_capability (struct font *font) |
| 1894 | { |
| 1895 | OTF *otf; |
| 1896 | Lisp_Object capability = Fcons (Qnil, Qnil); |
| 1897 | int i; |
| 1898 | |
| 1899 | otf = otf_open (font->props[FONT_FILE_INDEX]); |
| 1900 | if (! otf) |
| 1901 | return Qnil; |
| 1902 | for (i = 0; i < 2; i++) |
| 1903 | { |
| 1904 | OTF_GSUB_GPOS *gsub_gpos; |
| 1905 | Lisp_Object script_list = Qnil; |
| 1906 | int j; |
| 1907 | |
| 1908 | if (OTF_get_features (otf, i == 0) < 0) |
| 1909 | continue; |
| 1910 | gsub_gpos = i == 0 ? otf->gsub : otf->gpos; |
| 1911 | for (j = gsub_gpos->ScriptList.ScriptCount - 1; j >= 0; j--) |
| 1912 | { |
| 1913 | OTF_Script *script = gsub_gpos->ScriptList.Script + j; |
| 1914 | Lisp_Object langsys_list = Qnil; |
| 1915 | Lisp_Object script_tag = otf_tag_symbol (script->ScriptTag); |
| 1916 | int k; |
| 1917 | |
| 1918 | for (k = script->LangSysCount; k >= 0; k--) |
| 1919 | { |
| 1920 | OTF_LangSys *langsys; |
| 1921 | Lisp_Object feature_list = Qnil; |
| 1922 | Lisp_Object langsys_tag; |
| 1923 | int l; |
| 1924 | |
| 1925 | if (k == script->LangSysCount) |
| 1926 | { |
| 1927 | langsys = &script->DefaultLangSys; |
| 1928 | langsys_tag = Qnil; |
| 1929 | } |
| 1930 | else |
| 1931 | { |
| 1932 | langsys = script->LangSys + k; |
| 1933 | langsys_tag |
| 1934 | = otf_tag_symbol (script->LangSysRecord[k].LangSysTag); |
| 1935 | } |
| 1936 | for (l = langsys->FeatureCount - 1; l >= 0; l--) |
| 1937 | { |
| 1938 | OTF_Feature *feature |
| 1939 | = gsub_gpos->FeatureList.Feature + langsys->FeatureIndex[l]; |
| 1940 | Lisp_Object feature_tag |
| 1941 | = otf_tag_symbol (feature->FeatureTag); |
| 1942 | |
| 1943 | feature_list = Fcons (feature_tag, feature_list); |
| 1944 | } |
| 1945 | langsys_list = Fcons (Fcons (langsys_tag, feature_list), |
| 1946 | langsys_list); |
| 1947 | } |
| 1948 | script_list = Fcons (Fcons (script_tag, langsys_list), |
| 1949 | script_list); |
| 1950 | } |
| 1951 | |
| 1952 | if (i == 0) |
| 1953 | XSETCAR (capability, script_list); |
| 1954 | else |
| 1955 | XSETCDR (capability, script_list); |
| 1956 | } |
| 1957 | |
| 1958 | return capability; |
| 1959 | } |
| 1960 | |
| 1961 | /* Parse OTF features in SPEC and write a proper features spec string |
| 1962 | in FEATURES for the call of OTF_drive_gsub/gpos (of libotf). It is |
| 1963 | assured that the sufficient memory has already allocated for |
| 1964 | FEATURES. */ |
| 1965 | |
| 1966 | static void |
| 1967 | generate_otf_features (Lisp_Object spec, char *features) |
| 1968 | { |
| 1969 | Lisp_Object val; |
| 1970 | char *p; |
| 1971 | bool asterisk; |
| 1972 | |
| 1973 | p = features; |
| 1974 | *p = '\0'; |
| 1975 | for (asterisk = 0; CONSP (spec); spec = XCDR (spec)) |
| 1976 | { |
| 1977 | val = XCAR (spec); |
| 1978 | CHECK_SYMBOL (val); |
| 1979 | if (p > features) |
| 1980 | *p++ = ','; |
| 1981 | if (SREF (SYMBOL_NAME (val), 0) == '*') |
| 1982 | { |
| 1983 | asterisk = 1; |
| 1984 | *p++ = '*'; |
| 1985 | } |
| 1986 | else if (! asterisk) |
| 1987 | { |
| 1988 | val = SYMBOL_NAME (val); |
| 1989 | p += esprintf (p, "%s", SDATA (val)); |
| 1990 | } |
| 1991 | else |
| 1992 | { |
| 1993 | val = SYMBOL_NAME (val); |
| 1994 | p += esprintf (p, "~%s", SDATA (val)); |
| 1995 | } |
| 1996 | } |
| 1997 | if (CONSP (spec)) |
| 1998 | error ("OTF spec too long"); |
| 1999 | } |
| 2000 | |
| 2001 | Lisp_Object |
| 2002 | font_otf_DeviceTable (OTF_DeviceTable *device_table) |
| 2003 | { |
| 2004 | int len = device_table->StartSize - device_table->EndSize + 1; |
| 2005 | |
| 2006 | return Fcons (make_number (len), |
| 2007 | make_unibyte_string (device_table->DeltaValue, len)); |
| 2008 | } |
| 2009 | |
| 2010 | Lisp_Object |
| 2011 | font_otf_ValueRecord (int value_format, OTF_ValueRecord *value_record) |
| 2012 | { |
| 2013 | Lisp_Object val = Fmake_vector (make_number (8), Qnil); |
| 2014 | |
| 2015 | if (value_format & OTF_XPlacement) |
| 2016 | ASET (val, 0, make_number (value_record->XPlacement)); |
| 2017 | if (value_format & OTF_YPlacement) |
| 2018 | ASET (val, 1, make_number (value_record->YPlacement)); |
| 2019 | if (value_format & OTF_XAdvance) |
| 2020 | ASET (val, 2, make_number (value_record->XAdvance)); |
| 2021 | if (value_format & OTF_YAdvance) |
| 2022 | ASET (val, 3, make_number (value_record->YAdvance)); |
| 2023 | if (value_format & OTF_XPlaDevice) |
| 2024 | ASET (val, 4, font_otf_DeviceTable (&value_record->XPlaDevice)); |
| 2025 | if (value_format & OTF_YPlaDevice) |
| 2026 | ASET (val, 4, font_otf_DeviceTable (&value_record->YPlaDevice)); |
| 2027 | if (value_format & OTF_XAdvDevice) |
| 2028 | ASET (val, 4, font_otf_DeviceTable (&value_record->XAdvDevice)); |
| 2029 | if (value_format & OTF_YAdvDevice) |
| 2030 | ASET (val, 4, font_otf_DeviceTable (&value_record->YAdvDevice)); |
| 2031 | return val; |
| 2032 | } |
| 2033 | |
| 2034 | Lisp_Object |
| 2035 | font_otf_Anchor (OTF_Anchor *anchor) |
| 2036 | { |
| 2037 | Lisp_Object val; |
| 2038 | |
| 2039 | val = Fmake_vector (make_number (anchor->AnchorFormat + 1), Qnil); |
| 2040 | ASET (val, 0, make_number (anchor->XCoordinate)); |
| 2041 | ASET (val, 1, make_number (anchor->YCoordinate)); |
| 2042 | if (anchor->AnchorFormat == 2) |
| 2043 | ASET (val, 2, make_number (anchor->f.f1.AnchorPoint)); |
| 2044 | else |
| 2045 | { |
| 2046 | ASET (val, 3, font_otf_DeviceTable (&anchor->f.f2.XDeviceTable)); |
| 2047 | ASET (val, 4, font_otf_DeviceTable (&anchor->f.f2.YDeviceTable)); |
| 2048 | } |
| 2049 | return val; |
| 2050 | } |
| 2051 | #endif /* HAVE_LIBOTF */ |
| 2052 | #endif /* 0 */ |
| 2053 | |
| 2054 | \f |
| 2055 | /* Font sorting. */ |
| 2056 | |
| 2057 | static double |
| 2058 | font_rescale_ratio (Lisp_Object font_entity) |
| 2059 | { |
| 2060 | Lisp_Object tail, elt; |
| 2061 | Lisp_Object name = Qnil; |
| 2062 | |
| 2063 | for (tail = Vface_font_rescale_alist; CONSP (tail); tail = XCDR (tail)) |
| 2064 | { |
| 2065 | elt = XCAR (tail); |
| 2066 | if (FLOATP (XCDR (elt))) |
| 2067 | { |
| 2068 | if (STRINGP (XCAR (elt))) |
| 2069 | { |
| 2070 | if (NILP (name)) |
| 2071 | name = Ffont_xlfd_name (font_entity, Qnil); |
| 2072 | if (fast_string_match_ignore_case (XCAR (elt), name) >= 0) |
| 2073 | return XFLOAT_DATA (XCDR (elt)); |
| 2074 | } |
| 2075 | else if (FONT_SPEC_P (XCAR (elt))) |
| 2076 | { |
| 2077 | if (font_match_p (XCAR (elt), font_entity)) |
| 2078 | return XFLOAT_DATA (XCDR (elt)); |
| 2079 | } |
| 2080 | } |
| 2081 | } |
| 2082 | return 1.0; |
| 2083 | } |
| 2084 | |
| 2085 | /* We sort fonts by scoring each of them against a specified |
| 2086 | font-spec. The score value is 32 bit (`unsigned'), and the smaller |
| 2087 | the value is, the closer the font is to the font-spec. |
| 2088 | |
| 2089 | The lowest 2 bits of the score are used for driver type. The font |
| 2090 | available by the most preferred font driver is 0. |
| 2091 | |
| 2092 | The 4 7-bit fields in the higher 28 bits are used for numeric properties |
| 2093 | WEIGHT, SLANT, WIDTH, and SIZE. */ |
| 2094 | |
| 2095 | /* How many bits to shift to store the difference value of each font |
| 2096 | property in a score. Note that floats for FONT_TYPE_INDEX and |
| 2097 | FONT_REGISTRY_INDEX are not used. */ |
| 2098 | static int sort_shift_bits[FONT_SIZE_INDEX + 1]; |
| 2099 | |
| 2100 | /* Score font-entity ENTITY against properties of font-spec SPEC_PROP. |
| 2101 | The return value indicates how different ENTITY is compared with |
| 2102 | SPEC_PROP. */ |
| 2103 | |
| 2104 | static unsigned |
| 2105 | font_score (Lisp_Object entity, Lisp_Object *spec_prop) |
| 2106 | { |
| 2107 | unsigned score = 0; |
| 2108 | int i; |
| 2109 | |
| 2110 | /* Score three style numeric fields. Maximum difference is 127. */ |
| 2111 | for (i = FONT_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; i++) |
| 2112 | if (! NILP (spec_prop[i]) && ! EQ (AREF (entity, i), spec_prop[i])) |
| 2113 | { |
| 2114 | EMACS_INT diff = ((XINT (AREF (entity, i)) >> 8) |
| 2115 | - (XINT (spec_prop[i]) >> 8)); |
| 2116 | score |= min (eabs (diff), 127) << sort_shift_bits[i]; |
| 2117 | } |
| 2118 | |
| 2119 | /* Score the size. Maximum difference is 127. */ |
| 2120 | i = FONT_SIZE_INDEX; |
| 2121 | if (! NILP (spec_prop[FONT_SIZE_INDEX]) |
| 2122 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 2123 | { |
| 2124 | /* We use the higher 6-bit for the actual size difference. The |
| 2125 | lowest bit is set if the DPI is different. */ |
| 2126 | EMACS_INT diff; |
| 2127 | EMACS_INT pixel_size = XINT (spec_prop[FONT_SIZE_INDEX]); |
| 2128 | |
| 2129 | if (CONSP (Vface_font_rescale_alist)) |
| 2130 | pixel_size *= font_rescale_ratio (entity); |
| 2131 | diff = eabs (pixel_size - XINT (AREF (entity, FONT_SIZE_INDEX))) << 1; |
| 2132 | if (! NILP (spec_prop[FONT_DPI_INDEX]) |
| 2133 | && ! EQ (spec_prop[FONT_DPI_INDEX], AREF (entity, FONT_DPI_INDEX))) |
| 2134 | diff |= 1; |
| 2135 | if (! NILP (spec_prop[FONT_AVGWIDTH_INDEX]) |
| 2136 | && ! EQ (spec_prop[FONT_AVGWIDTH_INDEX], AREF (entity, FONT_AVGWIDTH_INDEX))) |
| 2137 | diff |= 1; |
| 2138 | score |= min (diff, 127) << sort_shift_bits[FONT_SIZE_INDEX]; |
| 2139 | } |
| 2140 | |
| 2141 | return score; |
| 2142 | } |
| 2143 | |
| 2144 | |
| 2145 | /* Concatenate all elements of LIST into one vector. LIST is a list |
| 2146 | of font-entity vectors. */ |
| 2147 | |
| 2148 | static Lisp_Object |
| 2149 | font_vconcat_entity_vectors (Lisp_Object list) |
| 2150 | { |
| 2151 | int nargs = XINT (Flength (list)); |
| 2152 | Lisp_Object *args = alloca (word_size * nargs); |
| 2153 | int i; |
| 2154 | |
| 2155 | for (i = 0; i < nargs; i++, list = XCDR (list)) |
| 2156 | args[i] = XCAR (list); |
| 2157 | return Fvconcat (nargs, args); |
| 2158 | } |
| 2159 | |
| 2160 | |
| 2161 | /* The structure for elements being sorted by qsort. */ |
| 2162 | struct font_sort_data |
| 2163 | { |
| 2164 | unsigned score; |
| 2165 | int font_driver_preference; |
| 2166 | Lisp_Object entity; |
| 2167 | }; |
| 2168 | |
| 2169 | |
| 2170 | /* The comparison function for qsort. */ |
| 2171 | |
| 2172 | static int |
| 2173 | font_compare (const void *d1, const void *d2) |
| 2174 | { |
| 2175 | const struct font_sort_data *data1 = d1; |
| 2176 | const struct font_sort_data *data2 = d2; |
| 2177 | |
| 2178 | if (data1->score < data2->score) |
| 2179 | return -1; |
| 2180 | else if (data1->score > data2->score) |
| 2181 | return 1; |
| 2182 | return (data1->font_driver_preference - data2->font_driver_preference); |
| 2183 | } |
| 2184 | |
| 2185 | |
| 2186 | /* Sort each font-entity vector in LIST by closeness to font-spec PREFER. |
| 2187 | If PREFER specifies a point-size, calculate the corresponding |
| 2188 | pixel-size from QCdpi property of PREFER or from the Y-resolution |
| 2189 | of FRAME before sorting. |
| 2190 | |
| 2191 | If BEST-ONLY is nonzero, return the best matching entity (that |
| 2192 | supports the character BEST-ONLY if BEST-ONLY is positive, or any |
| 2193 | if BEST-ONLY is negative). Otherwise, return the sorted result as |
| 2194 | a single vector of font-entities. |
| 2195 | |
| 2196 | This function does no optimization for the case that the total |
| 2197 | number of elements is 1. The caller should avoid calling this in |
| 2198 | such a case. */ |
| 2199 | |
| 2200 | static Lisp_Object |
| 2201 | font_sort_entities (Lisp_Object list, Lisp_Object prefer, |
| 2202 | struct frame *f, int best_only) |
| 2203 | { |
| 2204 | Lisp_Object prefer_prop[FONT_SPEC_MAX]; |
| 2205 | int len, maxlen, i; |
| 2206 | struct font_sort_data *data; |
| 2207 | unsigned best_score; |
| 2208 | Lisp_Object best_entity; |
| 2209 | Lisp_Object tail, vec IF_LINT (= Qnil); |
| 2210 | USE_SAFE_ALLOCA; |
| 2211 | |
| 2212 | for (i = FONT_WEIGHT_INDEX; i <= FONT_AVGWIDTH_INDEX; i++) |
| 2213 | prefer_prop[i] = AREF (prefer, i); |
| 2214 | if (FLOATP (prefer_prop[FONT_SIZE_INDEX])) |
| 2215 | prefer_prop[FONT_SIZE_INDEX] |
| 2216 | = make_number (font_pixel_size (f, prefer)); |
| 2217 | |
| 2218 | if (NILP (XCDR (list))) |
| 2219 | { |
| 2220 | /* What we have to take care of is this single vector. */ |
| 2221 | vec = XCAR (list); |
| 2222 | maxlen = ASIZE (vec); |
| 2223 | } |
| 2224 | else if (best_only) |
| 2225 | { |
| 2226 | /* We don't have to perform sort, so there's no need of creating |
| 2227 | a single vector. But, we must find the length of the longest |
| 2228 | vector. */ |
| 2229 | maxlen = 0; |
| 2230 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
| 2231 | if (maxlen < ASIZE (XCAR (tail))) |
| 2232 | maxlen = ASIZE (XCAR (tail)); |
| 2233 | } |
| 2234 | else |
| 2235 | { |
| 2236 | /* We have to create a single vector to sort it. */ |
| 2237 | vec = font_vconcat_entity_vectors (list); |
| 2238 | maxlen = ASIZE (vec); |
| 2239 | } |
| 2240 | |
| 2241 | data = SAFE_ALLOCA (maxlen * sizeof *data); |
| 2242 | best_score = 0xFFFFFFFF; |
| 2243 | best_entity = Qnil; |
| 2244 | |
| 2245 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
| 2246 | { |
| 2247 | int font_driver_preference = 0; |
| 2248 | Lisp_Object current_font_driver; |
| 2249 | |
| 2250 | if (best_only) |
| 2251 | vec = XCAR (tail); |
| 2252 | len = ASIZE (vec); |
| 2253 | |
| 2254 | /* We are sure that the length of VEC > 0. */ |
| 2255 | current_font_driver = AREF (AREF (vec, 0), FONT_TYPE_INDEX); |
| 2256 | /* Score the elements. */ |
| 2257 | for (i = 0; i < len; i++) |
| 2258 | { |
| 2259 | data[i].entity = AREF (vec, i); |
| 2260 | data[i].score |
| 2261 | = ((best_only <= 0 || font_has_char (f, data[i].entity, best_only) |
| 2262 | > 0) |
| 2263 | ? font_score (data[i].entity, prefer_prop) |
| 2264 | : 0xFFFFFFFF); |
| 2265 | if (best_only && best_score > data[i].score) |
| 2266 | { |
| 2267 | best_score = data[i].score; |
| 2268 | best_entity = data[i].entity; |
| 2269 | if (best_score == 0) |
| 2270 | break; |
| 2271 | } |
| 2272 | if (! EQ (current_font_driver, AREF (AREF (vec, i), FONT_TYPE_INDEX))) |
| 2273 | { |
| 2274 | current_font_driver = AREF (AREF (vec, i), FONT_TYPE_INDEX); |
| 2275 | font_driver_preference++; |
| 2276 | } |
| 2277 | data[i].font_driver_preference = font_driver_preference; |
| 2278 | } |
| 2279 | |
| 2280 | /* Sort if necessary. */ |
| 2281 | if (! best_only) |
| 2282 | { |
| 2283 | qsort (data, len, sizeof *data, font_compare); |
| 2284 | for (i = 0; i < len; i++) |
| 2285 | ASET (vec, i, data[i].entity); |
| 2286 | break; |
| 2287 | } |
| 2288 | else |
| 2289 | vec = best_entity; |
| 2290 | } |
| 2291 | |
| 2292 | SAFE_FREE (); |
| 2293 | |
| 2294 | FONT_ADD_LOG ("sort-by", prefer, vec); |
| 2295 | return vec; |
| 2296 | } |
| 2297 | |
| 2298 | \f |
| 2299 | /* API of Font Service Layer. */ |
| 2300 | |
| 2301 | /* Reflect ORDER (see the variable font_sort_order in xfaces.c) to |
| 2302 | sort_shift_bits. Finternal_set_font_selection_order calls this |
| 2303 | function with font_sort_order after setting up it. */ |
| 2304 | |
| 2305 | void |
| 2306 | font_update_sort_order (int *order) |
| 2307 | { |
| 2308 | int i, shift_bits; |
| 2309 | |
| 2310 | for (i = 0, shift_bits = 23; i < 4; i++, shift_bits -= 7) |
| 2311 | { |
| 2312 | int xlfd_idx = order[i]; |
| 2313 | |
| 2314 | if (xlfd_idx == XLFD_WEIGHT_INDEX) |
| 2315 | sort_shift_bits[FONT_WEIGHT_INDEX] = shift_bits; |
| 2316 | else if (xlfd_idx == XLFD_SLANT_INDEX) |
| 2317 | sort_shift_bits[FONT_SLANT_INDEX] = shift_bits; |
| 2318 | else if (xlfd_idx == XLFD_SWIDTH_INDEX) |
| 2319 | sort_shift_bits[FONT_WIDTH_INDEX] = shift_bits; |
| 2320 | else |
| 2321 | sort_shift_bits[FONT_SIZE_INDEX] = shift_bits; |
| 2322 | } |
| 2323 | } |
| 2324 | |
| 2325 | static bool |
| 2326 | font_check_otf_features (Lisp_Object script, Lisp_Object langsys, |
| 2327 | Lisp_Object features, Lisp_Object table) |
| 2328 | { |
| 2329 | Lisp_Object val; |
| 2330 | bool negative; |
| 2331 | |
| 2332 | table = assq_no_quit (script, table); |
| 2333 | if (NILP (table)) |
| 2334 | return 0; |
| 2335 | table = XCDR (table); |
| 2336 | if (! NILP (langsys)) |
| 2337 | { |
| 2338 | table = assq_no_quit (langsys, table); |
| 2339 | if (NILP (table)) |
| 2340 | return 0; |
| 2341 | } |
| 2342 | else |
| 2343 | { |
| 2344 | val = assq_no_quit (Qnil, table); |
| 2345 | if (NILP (val)) |
| 2346 | table = XCAR (table); |
| 2347 | else |
| 2348 | table = val; |
| 2349 | } |
| 2350 | table = XCDR (table); |
| 2351 | for (negative = 0; CONSP (features); features = XCDR (features)) |
| 2352 | { |
| 2353 | if (NILP (XCAR (features))) |
| 2354 | { |
| 2355 | negative = 1; |
| 2356 | continue; |
| 2357 | } |
| 2358 | if (NILP (Fmemq (XCAR (features), table)) != negative) |
| 2359 | return 0; |
| 2360 | } |
| 2361 | return 1; |
| 2362 | } |
| 2363 | |
| 2364 | /* Check if OTF_CAPABILITY satisfies SPEC (otf-spec). */ |
| 2365 | |
| 2366 | static bool |
| 2367 | font_check_otf (Lisp_Object spec, Lisp_Object otf_capability) |
| 2368 | { |
| 2369 | Lisp_Object script, langsys = Qnil, gsub = Qnil, gpos = Qnil; |
| 2370 | |
| 2371 | script = XCAR (spec); |
| 2372 | spec = XCDR (spec); |
| 2373 | if (! NILP (spec)) |
| 2374 | { |
| 2375 | langsys = XCAR (spec); |
| 2376 | spec = XCDR (spec); |
| 2377 | if (! NILP (spec)) |
| 2378 | { |
| 2379 | gsub = XCAR (spec); |
| 2380 | spec = XCDR (spec); |
| 2381 | if (! NILP (spec)) |
| 2382 | gpos = XCAR (spec); |
| 2383 | } |
| 2384 | } |
| 2385 | |
| 2386 | if (! NILP (gsub) && ! font_check_otf_features (script, langsys, gsub, |
| 2387 | XCAR (otf_capability))) |
| 2388 | return 0; |
| 2389 | if (! NILP (gpos) && ! font_check_otf_features (script, langsys, gpos, |
| 2390 | XCDR (otf_capability))) |
| 2391 | return 0; |
| 2392 | return 1; |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | |
| 2397 | /* Check if FONT (font-entity or font-object) matches with the font |
| 2398 | specification SPEC. */ |
| 2399 | |
| 2400 | bool |
| 2401 | font_match_p (Lisp_Object spec, Lisp_Object font) |
| 2402 | { |
| 2403 | Lisp_Object prop[FONT_SPEC_MAX], *props; |
| 2404 | Lisp_Object extra, font_extra; |
| 2405 | int i; |
| 2406 | |
| 2407 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
| 2408 | if (! NILP (AREF (spec, i)) |
| 2409 | && ! NILP (AREF (font, i)) |
| 2410 | && ! EQ (AREF (spec, i), AREF (font, i))) |
| 2411 | return 0; |
| 2412 | props = XFONT_SPEC (spec)->props; |
| 2413 | if (FLOATP (props[FONT_SIZE_INDEX])) |
| 2414 | { |
| 2415 | for (i = FONT_FOUNDRY_INDEX; i < FONT_SIZE_INDEX; i++) |
| 2416 | prop[i] = AREF (spec, i); |
| 2417 | prop[FONT_SIZE_INDEX] |
| 2418 | = make_number (font_pixel_size (XFRAME (selected_frame), spec)); |
| 2419 | props = prop; |
| 2420 | } |
| 2421 | |
| 2422 | if (font_score (font, props) > 0) |
| 2423 | return 0; |
| 2424 | extra = AREF (spec, FONT_EXTRA_INDEX); |
| 2425 | font_extra = AREF (font, FONT_EXTRA_INDEX); |
| 2426 | for (; CONSP (extra); extra = XCDR (extra)) |
| 2427 | { |
| 2428 | Lisp_Object key = XCAR (XCAR (extra)); |
| 2429 | Lisp_Object val = XCDR (XCAR (extra)), val2; |
| 2430 | |
| 2431 | if (EQ (key, QClang)) |
| 2432 | { |
| 2433 | val2 = assq_no_quit (key, font_extra); |
| 2434 | if (NILP (val2)) |
| 2435 | return 0; |
| 2436 | val2 = XCDR (val2); |
| 2437 | if (CONSP (val)) |
| 2438 | { |
| 2439 | if (! CONSP (val2)) |
| 2440 | return 0; |
| 2441 | while (CONSP (val)) |
| 2442 | if (NILP (Fmemq (val, val2))) |
| 2443 | return 0; |
| 2444 | } |
| 2445 | else |
| 2446 | if (CONSP (val2) |
| 2447 | ? NILP (Fmemq (val, XCDR (val2))) |
| 2448 | : ! EQ (val, val2)) |
| 2449 | return 0; |
| 2450 | } |
| 2451 | else if (EQ (key, QCscript)) |
| 2452 | { |
| 2453 | val2 = assq_no_quit (val, Vscript_representative_chars); |
| 2454 | if (CONSP (val2)) |
| 2455 | { |
| 2456 | val2 = XCDR (val2); |
| 2457 | if (CONSP (val2)) |
| 2458 | { |
| 2459 | /* All characters in the list must be supported. */ |
| 2460 | for (; CONSP (val2); val2 = XCDR (val2)) |
| 2461 | { |
| 2462 | if (! CHARACTERP (XCAR (val2))) |
| 2463 | continue; |
| 2464 | if (font_encode_char (font, XFASTINT (XCAR (val2))) |
| 2465 | == FONT_INVALID_CODE) |
| 2466 | return 0; |
| 2467 | } |
| 2468 | } |
| 2469 | else if (VECTORP (val2)) |
| 2470 | { |
| 2471 | /* At most one character in the vector must be supported. */ |
| 2472 | for (i = 0; i < ASIZE (val2); i++) |
| 2473 | { |
| 2474 | if (! CHARACTERP (AREF (val2, i))) |
| 2475 | continue; |
| 2476 | if (font_encode_char (font, XFASTINT (AREF (val2, i))) |
| 2477 | != FONT_INVALID_CODE) |
| 2478 | break; |
| 2479 | } |
| 2480 | if (i == ASIZE (val2)) |
| 2481 | return 0; |
| 2482 | } |
| 2483 | } |
| 2484 | } |
| 2485 | else if (EQ (key, QCotf)) |
| 2486 | { |
| 2487 | struct font *fontp; |
| 2488 | |
| 2489 | if (! FONT_OBJECT_P (font)) |
| 2490 | return 0; |
| 2491 | fontp = XFONT_OBJECT (font); |
| 2492 | if (! fontp->driver->otf_capability) |
| 2493 | return 0; |
| 2494 | val2 = fontp->driver->otf_capability (fontp); |
| 2495 | if (NILP (val2) || ! font_check_otf (val, val2)) |
| 2496 | return 0; |
| 2497 | } |
| 2498 | } |
| 2499 | |
| 2500 | return 1; |
| 2501 | } |
| 2502 | \f |
| 2503 | |
| 2504 | /* Font cache |
| 2505 | |
| 2506 | Each font backend has the callback function get_cache, and it |
| 2507 | returns a cons cell of which cdr part can be freely used for |
| 2508 | caching fonts. The cons cell may be shared by multiple frames |
| 2509 | and/or multiple font drivers. So, we arrange the cdr part as this: |
| 2510 | |
| 2511 | ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) |
| 2512 | |
| 2513 | where DRIVER-TYPE is a symbol such as `x', `xft', etc., NUM-FRAMES |
| 2514 | is a number frames sharing this cache, and FONT-CACHE-DATA is a |
| 2515 | cons (FONT-SPEC . [FONT-ENTITY ...]). */ |
| 2516 | |
| 2517 | static void font_prepare_cache (struct frame *, struct font_driver *); |
| 2518 | static void font_finish_cache (struct frame *, struct font_driver *); |
| 2519 | static Lisp_Object font_get_cache (struct frame *, struct font_driver *); |
| 2520 | static void font_clear_cache (struct frame *, Lisp_Object, |
| 2521 | struct font_driver *); |
| 2522 | |
| 2523 | static void |
| 2524 | font_prepare_cache (struct frame *f, struct font_driver *driver) |
| 2525 | { |
| 2526 | Lisp_Object cache, val; |
| 2527 | |
| 2528 | cache = driver->get_cache (f); |
| 2529 | val = XCDR (cache); |
| 2530 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2531 | val = XCDR (val); |
| 2532 | if (NILP (val)) |
| 2533 | { |
| 2534 | val = list2 (driver->type, make_number (1)); |
| 2535 | XSETCDR (cache, Fcons (val, XCDR (cache))); |
| 2536 | } |
| 2537 | else |
| 2538 | { |
| 2539 | val = XCDR (XCAR (val)); |
| 2540 | XSETCAR (val, make_number (XINT (XCAR (val)) + 1)); |
| 2541 | } |
| 2542 | } |
| 2543 | |
| 2544 | |
| 2545 | static void |
| 2546 | font_finish_cache (struct frame *f, struct font_driver *driver) |
| 2547 | { |
| 2548 | Lisp_Object cache, val, tmp; |
| 2549 | |
| 2550 | |
| 2551 | cache = driver->get_cache (f); |
| 2552 | val = XCDR (cache); |
| 2553 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2554 | cache = val, val = XCDR (val); |
| 2555 | eassert (! NILP (val)); |
| 2556 | tmp = XCDR (XCAR (val)); |
| 2557 | XSETCAR (tmp, make_number (XINT (XCAR (tmp)) - 1)); |
| 2558 | if (XINT (XCAR (tmp)) == 0) |
| 2559 | { |
| 2560 | font_clear_cache (f, XCAR (val), driver); |
| 2561 | XSETCDR (cache, XCDR (val)); |
| 2562 | } |
| 2563 | } |
| 2564 | |
| 2565 | |
| 2566 | static Lisp_Object |
| 2567 | font_get_cache (struct frame *f, struct font_driver *driver) |
| 2568 | { |
| 2569 | Lisp_Object val = driver->get_cache (f); |
| 2570 | Lisp_Object type = driver->type; |
| 2571 | |
| 2572 | eassert (CONSP (val)); |
| 2573 | for (val = XCDR (val); ! EQ (XCAR (XCAR (val)), type); val = XCDR (val)); |
| 2574 | eassert (CONSP (val)); |
| 2575 | /* VAL = ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) */ |
| 2576 | val = XCDR (XCAR (val)); |
| 2577 | return val; |
| 2578 | } |
| 2579 | |
| 2580 | |
| 2581 | static void |
| 2582 | font_clear_cache (struct frame *f, Lisp_Object cache, struct font_driver *driver) |
| 2583 | { |
| 2584 | Lisp_Object tail, elt; |
| 2585 | Lisp_Object entity; |
| 2586 | ptrdiff_t i; |
| 2587 | |
| 2588 | /* CACHE = (DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) */ |
| 2589 | for (tail = XCDR (XCDR (cache)); CONSP (tail); tail = XCDR (tail)) |
| 2590 | { |
| 2591 | elt = XCAR (tail); |
| 2592 | /* elt should have the form (FONT-SPEC . [FONT-ENTITY ...]) */ |
| 2593 | if (CONSP (elt) && FONT_SPEC_P (XCAR (elt))) |
| 2594 | { |
| 2595 | elt = XCDR (elt); |
| 2596 | eassert (VECTORP (elt)); |
| 2597 | for (i = 0; i < ASIZE (elt); i++) |
| 2598 | { |
| 2599 | entity = AREF (elt, i); |
| 2600 | |
| 2601 | if (FONT_ENTITY_P (entity) |
| 2602 | && EQ (driver->type, AREF (entity, FONT_TYPE_INDEX))) |
| 2603 | { |
| 2604 | Lisp_Object objlist = AREF (entity, FONT_OBJLIST_INDEX); |
| 2605 | |
| 2606 | for (; CONSP (objlist); objlist = XCDR (objlist)) |
| 2607 | { |
| 2608 | Lisp_Object val = XCAR (objlist); |
| 2609 | struct font *font = XFONT_OBJECT (val); |
| 2610 | |
| 2611 | if (! NILP (AREF (val, FONT_TYPE_INDEX))) |
| 2612 | { |
| 2613 | eassert (font && driver == font->driver); |
| 2614 | driver->close (font); |
| 2615 | } |
| 2616 | } |
| 2617 | if (driver->free_entity) |
| 2618 | driver->free_entity (entity); |
| 2619 | } |
| 2620 | } |
| 2621 | } |
| 2622 | } |
| 2623 | XSETCDR (cache, Qnil); |
| 2624 | } |
| 2625 | \f |
| 2626 | |
| 2627 | static Lisp_Object scratch_font_spec, scratch_font_prefer; |
| 2628 | |
| 2629 | /* Check each font-entity in VEC, and return a list of font-entities |
| 2630 | that satisfy these conditions: |
| 2631 | (1) matches with SPEC and SIZE if SPEC is not nil, and |
| 2632 | (2) doesn't match with any regexps in Vface_ignored_fonts (if non-nil). |
| 2633 | */ |
| 2634 | |
| 2635 | static Lisp_Object |
| 2636 | font_delete_unmatched (Lisp_Object vec, Lisp_Object spec, int size) |
| 2637 | { |
| 2638 | Lisp_Object entity, val; |
| 2639 | enum font_property_index prop; |
| 2640 | int i; |
| 2641 | |
| 2642 | for (val = Qnil, i = ASIZE (vec) - 1; i >= 0; i--) |
| 2643 | { |
| 2644 | entity = AREF (vec, i); |
| 2645 | if (! NILP (Vface_ignored_fonts)) |
| 2646 | { |
| 2647 | char name[256]; |
| 2648 | ptrdiff_t namelen; |
| 2649 | Lisp_Object tail, regexp; |
| 2650 | |
| 2651 | namelen = font_unparse_xlfd (entity, 0, name, 256); |
| 2652 | if (namelen >= 0) |
| 2653 | { |
| 2654 | for (tail = Vface_ignored_fonts; CONSP (tail); tail = XCDR (tail)) |
| 2655 | { |
| 2656 | regexp = XCAR (tail); |
| 2657 | if (STRINGP (regexp) |
| 2658 | && fast_c_string_match_ignore_case (regexp, name, |
| 2659 | namelen) >= 0) |
| 2660 | break; |
| 2661 | } |
| 2662 | if (CONSP (tail)) |
| 2663 | continue; |
| 2664 | } |
| 2665 | } |
| 2666 | if (NILP (spec)) |
| 2667 | { |
| 2668 | val = Fcons (entity, val); |
| 2669 | continue; |
| 2670 | } |
| 2671 | for (prop = FONT_WEIGHT_INDEX; prop < FONT_SIZE_INDEX; prop++) |
| 2672 | if (INTEGERP (AREF (spec, prop)) |
| 2673 | && ((XINT (AREF (spec, prop)) >> 8) |
| 2674 | != (XINT (AREF (entity, prop)) >> 8))) |
| 2675 | prop = FONT_SPEC_MAX; |
| 2676 | if (prop < FONT_SPEC_MAX |
| 2677 | && size |
| 2678 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 2679 | { |
| 2680 | int diff = XINT (AREF (entity, FONT_SIZE_INDEX)) - size; |
| 2681 | |
| 2682 | if (eabs (diff) > FONT_PIXEL_SIZE_QUANTUM) |
| 2683 | prop = FONT_SPEC_MAX; |
| 2684 | } |
| 2685 | if (prop < FONT_SPEC_MAX |
| 2686 | && INTEGERP (AREF (spec, FONT_DPI_INDEX)) |
| 2687 | && INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
| 2688 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 |
| 2689 | && ! EQ (AREF (spec, FONT_DPI_INDEX), AREF (entity, FONT_DPI_INDEX))) |
| 2690 | prop = FONT_SPEC_MAX; |
| 2691 | if (prop < FONT_SPEC_MAX |
| 2692 | && INTEGERP (AREF (spec, FONT_AVGWIDTH_INDEX)) |
| 2693 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) |
| 2694 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) != 0 |
| 2695 | && ! EQ (AREF (spec, FONT_AVGWIDTH_INDEX), |
| 2696 | AREF (entity, FONT_AVGWIDTH_INDEX))) |
| 2697 | prop = FONT_SPEC_MAX; |
| 2698 | if (prop < FONT_SPEC_MAX) |
| 2699 | val = Fcons (entity, val); |
| 2700 | } |
| 2701 | return (Fvconcat (1, &val)); |
| 2702 | } |
| 2703 | |
| 2704 | |
| 2705 | /* Return a list of vectors of font-entities matching with SPEC on |
| 2706 | FRAME. Each elements in the list is a vector of entities from the |
| 2707 | same font-driver. */ |
| 2708 | |
| 2709 | Lisp_Object |
| 2710 | font_list_entities (struct frame *f, Lisp_Object spec) |
| 2711 | { |
| 2712 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2713 | Lisp_Object ftype, val; |
| 2714 | Lisp_Object list = Qnil; |
| 2715 | int size; |
| 2716 | bool need_filtering = 0; |
| 2717 | int i; |
| 2718 | |
| 2719 | eassert (FONT_SPEC_P (spec)); |
| 2720 | |
| 2721 | if (INTEGERP (AREF (spec, FONT_SIZE_INDEX))) |
| 2722 | size = XINT (AREF (spec, FONT_SIZE_INDEX)); |
| 2723 | else if (FLOATP (AREF (spec, FONT_SIZE_INDEX))) |
| 2724 | size = font_pixel_size (f, spec); |
| 2725 | else |
| 2726 | size = 0; |
| 2727 | |
| 2728 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2729 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
| 2730 | ASET (scratch_font_spec, i, AREF (spec, i)); |
| 2731 | for (i = FONT_WEIGHT_INDEX; i < FONT_EXTRA_INDEX; i++) |
| 2732 | if (i != FONT_SPACING_INDEX) |
| 2733 | { |
| 2734 | ASET (scratch_font_spec, i, Qnil); |
| 2735 | if (! NILP (AREF (spec, i))) |
| 2736 | need_filtering = 1; |
| 2737 | } |
| 2738 | ASET (scratch_font_spec, FONT_SPACING_INDEX, AREF (spec, FONT_SPACING_INDEX)); |
| 2739 | ASET (scratch_font_spec, FONT_EXTRA_INDEX, AREF (spec, FONT_EXTRA_INDEX)); |
| 2740 | |
| 2741 | for (; driver_list; driver_list = driver_list->next) |
| 2742 | if (driver_list->on |
| 2743 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2744 | { |
| 2745 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2746 | |
| 2747 | ASET (scratch_font_spec, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2748 | val = assoc_no_quit (scratch_font_spec, XCDR (cache)); |
| 2749 | if (CONSP (val)) |
| 2750 | val = XCDR (val); |
| 2751 | else |
| 2752 | { |
| 2753 | val = driver_list->driver->list (f, scratch_font_spec); |
| 2754 | if (!NILP (val)) |
| 2755 | { |
| 2756 | Lisp_Object copy = copy_font_spec (scratch_font_spec); |
| 2757 | |
| 2758 | val = Fvconcat (1, &val); |
| 2759 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2760 | XSETCDR (cache, Fcons (Fcons (copy, val), XCDR (cache))); |
| 2761 | } |
| 2762 | } |
| 2763 | if (VECTORP (val) && ASIZE (val) > 0 |
| 2764 | && (need_filtering |
| 2765 | || ! NILP (Vface_ignored_fonts))) |
| 2766 | val = font_delete_unmatched (val, need_filtering ? spec : Qnil, size); |
| 2767 | if (VECTORP (val) && ASIZE (val) > 0) |
| 2768 | list = Fcons (val, list); |
| 2769 | } |
| 2770 | |
| 2771 | list = Fnreverse (list); |
| 2772 | FONT_ADD_LOG ("list", spec, list); |
| 2773 | return list; |
| 2774 | } |
| 2775 | |
| 2776 | |
| 2777 | /* Return a font entity matching with SPEC on FRAME. ATTRS, if non |
| 2778 | nil, is an array of face's attributes, which specifies preferred |
| 2779 | font-related attributes. */ |
| 2780 | |
| 2781 | static Lisp_Object |
| 2782 | font_matching_entity (struct frame *f, Lisp_Object *attrs, Lisp_Object spec) |
| 2783 | { |
| 2784 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2785 | Lisp_Object ftype, size, entity; |
| 2786 | Lisp_Object work = copy_font_spec (spec); |
| 2787 | |
| 2788 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2789 | size = AREF (spec, FONT_SIZE_INDEX); |
| 2790 | |
| 2791 | if (FLOATP (size)) |
| 2792 | ASET (work, FONT_SIZE_INDEX, make_number (font_pixel_size (f, spec))); |
| 2793 | FONT_SET_STYLE (work, FONT_WEIGHT_INDEX, attrs[LFACE_WEIGHT_INDEX]); |
| 2794 | FONT_SET_STYLE (work, FONT_SLANT_INDEX, attrs[LFACE_SLANT_INDEX]); |
| 2795 | FONT_SET_STYLE (work, FONT_WIDTH_INDEX, attrs[LFACE_SWIDTH_INDEX]); |
| 2796 | |
| 2797 | entity = Qnil; |
| 2798 | for (; driver_list; driver_list = driver_list->next) |
| 2799 | if (driver_list->on |
| 2800 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2801 | { |
| 2802 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2803 | |
| 2804 | ASET (work, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2805 | entity = assoc_no_quit (work, XCDR (cache)); |
| 2806 | if (CONSP (entity)) |
| 2807 | entity = AREF (XCDR (entity), 0); |
| 2808 | else |
| 2809 | { |
| 2810 | entity = driver_list->driver->match (f, work); |
| 2811 | if (!NILP (entity)) |
| 2812 | { |
| 2813 | Lisp_Object copy = copy_font_spec (work); |
| 2814 | Lisp_Object match = Fvector (1, &entity); |
| 2815 | |
| 2816 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2817 | XSETCDR (cache, Fcons (Fcons (copy, match), XCDR (cache))); |
| 2818 | } |
| 2819 | } |
| 2820 | if (! NILP (entity)) |
| 2821 | break; |
| 2822 | } |
| 2823 | FONT_ADD_LOG ("match", work, entity); |
| 2824 | return entity; |
| 2825 | } |
| 2826 | |
| 2827 | |
| 2828 | /* Open a font of ENTITY and PIXEL_SIZE on frame F, and return the |
| 2829 | opened font object. */ |
| 2830 | |
| 2831 | static Lisp_Object |
| 2832 | font_open_entity (struct frame *f, Lisp_Object entity, int pixel_size) |
| 2833 | { |
| 2834 | struct font_driver_list *driver_list; |
| 2835 | Lisp_Object objlist, size, val, font_object; |
| 2836 | struct font *font; |
| 2837 | int min_width, height, psize; |
| 2838 | |
| 2839 | eassert (FONT_ENTITY_P (entity)); |
| 2840 | size = AREF (entity, FONT_SIZE_INDEX); |
| 2841 | if (XINT (size) != 0) |
| 2842 | pixel_size = XINT (size); |
| 2843 | |
| 2844 | val = AREF (entity, FONT_TYPE_INDEX); |
| 2845 | for (driver_list = f->font_driver_list; |
| 2846 | driver_list && ! EQ (driver_list->driver->type, val); |
| 2847 | driver_list = driver_list->next); |
| 2848 | if (! driver_list) |
| 2849 | return Qnil; |
| 2850 | |
| 2851 | for (objlist = AREF (entity, FONT_OBJLIST_INDEX); CONSP (objlist); |
| 2852 | objlist = XCDR (objlist)) |
| 2853 | { |
| 2854 | Lisp_Object fn = XCAR (objlist); |
| 2855 | if (! NILP (AREF (fn, FONT_TYPE_INDEX)) |
| 2856 | && XFONT_OBJECT (fn)->pixel_size == pixel_size) |
| 2857 | { |
| 2858 | if (driver_list->driver->cached_font_ok == NULL |
| 2859 | || driver_list->driver->cached_font_ok (f, fn, entity)) |
| 2860 | return fn; |
| 2861 | } |
| 2862 | } |
| 2863 | |
| 2864 | /* We always open a font of manageable size; i.e non-zero average |
| 2865 | width and height. */ |
| 2866 | for (psize = pixel_size; ; psize++) |
| 2867 | { |
| 2868 | font_object = driver_list->driver->open (f, entity, psize); |
| 2869 | if (NILP (font_object)) |
| 2870 | return Qnil; |
| 2871 | font = XFONT_OBJECT (font_object); |
| 2872 | if (font->average_width > 0 && font->height > 0) |
| 2873 | break; |
| 2874 | } |
| 2875 | ASET (font_object, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 2876 | FONT_ADD_LOG ("open", entity, font_object); |
| 2877 | ASET (entity, FONT_OBJLIST_INDEX, |
| 2878 | Fcons (font_object, AREF (entity, FONT_OBJLIST_INDEX))); |
| 2879 | |
| 2880 | font = XFONT_OBJECT (font_object); |
| 2881 | min_width = (font->min_width ? font->min_width |
| 2882 | : font->average_width ? font->average_width |
| 2883 | : font->space_width ? font->space_width |
| 2884 | : 1); |
| 2885 | height = (font->height ? font->height : 1); |
| 2886 | #ifdef HAVE_WINDOW_SYSTEM |
| 2887 | FRAME_DISPLAY_INFO (f)->n_fonts++; |
| 2888 | if (FRAME_DISPLAY_INFO (f)->n_fonts == 1) |
| 2889 | { |
| 2890 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width; |
| 2891 | FRAME_SMALLEST_FONT_HEIGHT (f) = height; |
| 2892 | f->fonts_changed = 1; |
| 2893 | } |
| 2894 | else |
| 2895 | { |
| 2896 | if (FRAME_SMALLEST_CHAR_WIDTH (f) > min_width) |
| 2897 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width, f->fonts_changed = 1; |
| 2898 | if (FRAME_SMALLEST_FONT_HEIGHT (f) > height) |
| 2899 | FRAME_SMALLEST_FONT_HEIGHT (f) = height, f->fonts_changed = 1; |
| 2900 | } |
| 2901 | #endif |
| 2902 | |
| 2903 | return font_object; |
| 2904 | } |
| 2905 | |
| 2906 | |
| 2907 | /* Close FONT_OBJECT that is opened on frame F. */ |
| 2908 | |
| 2909 | static void |
| 2910 | font_close_object (struct frame *f, Lisp_Object font_object) |
| 2911 | { |
| 2912 | struct font *font = XFONT_OBJECT (font_object); |
| 2913 | |
| 2914 | if (NILP (AREF (font_object, FONT_TYPE_INDEX))) |
| 2915 | /* Already closed. */ |
| 2916 | return; |
| 2917 | FONT_ADD_LOG ("close", font_object, Qnil); |
| 2918 | font->driver->close (font); |
| 2919 | #ifdef HAVE_WINDOW_SYSTEM |
| 2920 | eassert (FRAME_DISPLAY_INFO (f)->n_fonts); |
| 2921 | FRAME_DISPLAY_INFO (f)->n_fonts--; |
| 2922 | #endif |
| 2923 | } |
| 2924 | |
| 2925 | |
| 2926 | /* Return 1 if FONT on F has a glyph for character C, 0 if not, -1 if |
| 2927 | FONT is a font-entity and it must be opened to check. */ |
| 2928 | |
| 2929 | int |
| 2930 | font_has_char (struct frame *f, Lisp_Object font, int c) |
| 2931 | { |
| 2932 | struct font *fontp; |
| 2933 | |
| 2934 | if (FONT_ENTITY_P (font)) |
| 2935 | { |
| 2936 | Lisp_Object type = AREF (font, FONT_TYPE_INDEX); |
| 2937 | struct font_driver_list *driver_list; |
| 2938 | |
| 2939 | for (driver_list = f->font_driver_list; |
| 2940 | driver_list && ! EQ (driver_list->driver->type, type); |
| 2941 | driver_list = driver_list->next); |
| 2942 | if (! driver_list) |
| 2943 | return 0; |
| 2944 | if (! driver_list->driver->has_char) |
| 2945 | return -1; |
| 2946 | return driver_list->driver->has_char (font, c); |
| 2947 | } |
| 2948 | |
| 2949 | eassert (FONT_OBJECT_P (font)); |
| 2950 | fontp = XFONT_OBJECT (font); |
| 2951 | if (fontp->driver->has_char) |
| 2952 | { |
| 2953 | int result = fontp->driver->has_char (font, c); |
| 2954 | |
| 2955 | if (result >= 0) |
| 2956 | return result; |
| 2957 | } |
| 2958 | return (fontp->driver->encode_char (fontp, c) != FONT_INVALID_CODE); |
| 2959 | } |
| 2960 | |
| 2961 | |
| 2962 | /* Return the glyph ID of FONT_OBJECT for character C. */ |
| 2963 | |
| 2964 | static unsigned |
| 2965 | font_encode_char (Lisp_Object font_object, int c) |
| 2966 | { |
| 2967 | struct font *font; |
| 2968 | |
| 2969 | eassert (FONT_OBJECT_P (font_object)); |
| 2970 | font = XFONT_OBJECT (font_object); |
| 2971 | return font->driver->encode_char (font, c); |
| 2972 | } |
| 2973 | |
| 2974 | |
| 2975 | /* Return the name of FONT_OBJECT. */ |
| 2976 | |
| 2977 | Lisp_Object |
| 2978 | font_get_name (Lisp_Object font_object) |
| 2979 | { |
| 2980 | eassert (FONT_OBJECT_P (font_object)); |
| 2981 | return AREF (font_object, FONT_NAME_INDEX); |
| 2982 | } |
| 2983 | |
| 2984 | |
| 2985 | /* Create a new font spec from FONT_NAME, and return it. If FONT_NAME |
| 2986 | could not be parsed by font_parse_name, return Qnil. */ |
| 2987 | |
| 2988 | Lisp_Object |
| 2989 | font_spec_from_name (Lisp_Object font_name) |
| 2990 | { |
| 2991 | Lisp_Object spec = Ffont_spec (0, NULL); |
| 2992 | |
| 2993 | CHECK_STRING (font_name); |
| 2994 | if (font_parse_name (SSDATA (font_name), SBYTES (font_name), spec) == -1) |
| 2995 | return Qnil; |
| 2996 | font_put_extra (spec, QCname, font_name); |
| 2997 | font_put_extra (spec, QCuser_spec, font_name); |
| 2998 | return spec; |
| 2999 | } |
| 3000 | |
| 3001 | |
| 3002 | void |
| 3003 | font_clear_prop (Lisp_Object *attrs, enum font_property_index prop) |
| 3004 | { |
| 3005 | Lisp_Object font = attrs[LFACE_FONT_INDEX]; |
| 3006 | |
| 3007 | if (! FONTP (font)) |
| 3008 | return; |
| 3009 | |
| 3010 | if (! NILP (Ffont_get (font, QCname))) |
| 3011 | { |
| 3012 | font = copy_font_spec (font); |
| 3013 | font_put_extra (font, QCname, Qnil); |
| 3014 | } |
| 3015 | |
| 3016 | if (NILP (AREF (font, prop)) |
| 3017 | && prop != FONT_FAMILY_INDEX |
| 3018 | && prop != FONT_FOUNDRY_INDEX |
| 3019 | && prop != FONT_WIDTH_INDEX |
| 3020 | && prop != FONT_SIZE_INDEX) |
| 3021 | return; |
| 3022 | if (EQ (font, attrs[LFACE_FONT_INDEX])) |
| 3023 | font = copy_font_spec (font); |
| 3024 | ASET (font, prop, Qnil); |
| 3025 | if (prop == FONT_FAMILY_INDEX || prop == FONT_FOUNDRY_INDEX) |
| 3026 | { |
| 3027 | if (prop == FONT_FAMILY_INDEX) |
| 3028 | { |
| 3029 | ASET (font, FONT_FOUNDRY_INDEX, Qnil); |
| 3030 | /* If we are setting the font family, we must also clear |
| 3031 | FONT_WIDTH_INDEX to avoid rejecting families that lack |
| 3032 | support for some widths. */ |
| 3033 | ASET (font, FONT_WIDTH_INDEX, Qnil); |
| 3034 | } |
| 3035 | ASET (font, FONT_ADSTYLE_INDEX, Qnil); |
| 3036 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 3037 | ASET (font, FONT_SIZE_INDEX, Qnil); |
| 3038 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 3039 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 3040 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 3041 | } |
| 3042 | else if (prop == FONT_SIZE_INDEX) |
| 3043 | { |
| 3044 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 3045 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 3046 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 3047 | } |
| 3048 | else if (prop == FONT_WIDTH_INDEX) |
| 3049 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 3050 | attrs[LFACE_FONT_INDEX] = font; |
| 3051 | } |
| 3052 | |
| 3053 | /* Select a font from ENTITIES (list of font-entity vectors) that |
| 3054 | supports C and is the best match for ATTRS and PIXEL_SIZE. */ |
| 3055 | |
| 3056 | static Lisp_Object |
| 3057 | font_select_entity (struct frame *f, Lisp_Object entities, |
| 3058 | Lisp_Object *attrs, int pixel_size, int c) |
| 3059 | { |
| 3060 | Lisp_Object font_entity; |
| 3061 | Lisp_Object prefer; |
| 3062 | int i; |
| 3063 | |
| 3064 | if (NILP (XCDR (entities)) |
| 3065 | && ASIZE (XCAR (entities)) == 1) |
| 3066 | { |
| 3067 | font_entity = AREF (XCAR (entities), 0); |
| 3068 | if (c < 0 || font_has_char (f, font_entity, c) > 0) |
| 3069 | return font_entity; |
| 3070 | return Qnil; |
| 3071 | } |
| 3072 | |
| 3073 | /* Sort fonts by properties specified in ATTRS. */ |
| 3074 | prefer = scratch_font_prefer; |
| 3075 | |
| 3076 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 3077 | ASET (prefer, i, Qnil); |
| 3078 | if (FONTP (attrs[LFACE_FONT_INDEX])) |
| 3079 | { |
| 3080 | Lisp_Object face_font = attrs[LFACE_FONT_INDEX]; |
| 3081 | |
| 3082 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 3083 | ASET (prefer, i, AREF (face_font, i)); |
| 3084 | } |
| 3085 | if (NILP (AREF (prefer, FONT_WEIGHT_INDEX))) |
| 3086 | FONT_SET_STYLE (prefer, FONT_WEIGHT_INDEX, attrs[LFACE_WEIGHT_INDEX]); |
| 3087 | if (NILP (AREF (prefer, FONT_SLANT_INDEX))) |
| 3088 | FONT_SET_STYLE (prefer, FONT_SLANT_INDEX, attrs[LFACE_SLANT_INDEX]); |
| 3089 | if (NILP (AREF (prefer, FONT_WIDTH_INDEX))) |
| 3090 | FONT_SET_STYLE (prefer, FONT_WIDTH_INDEX, attrs[LFACE_SWIDTH_INDEX]); |
| 3091 | ASET (prefer, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 3092 | |
| 3093 | return font_sort_entities (entities, prefer, f, c); |
| 3094 | } |
| 3095 | |
| 3096 | /* Return a font-entity that satisfies SPEC and is the best match for |
| 3097 | face's font related attributes in ATTRS. C, if not negative, is a |
| 3098 | character that the entity must support. */ |
| 3099 | |
| 3100 | Lisp_Object |
| 3101 | font_find_for_lface (struct frame *f, Lisp_Object *attrs, Lisp_Object spec, int c) |
| 3102 | { |
| 3103 | Lisp_Object work; |
| 3104 | Lisp_Object entities, val; |
| 3105 | Lisp_Object foundry[3], *family, registry[3], adstyle[3]; |
| 3106 | int pixel_size; |
| 3107 | int i, j, k, l; |
| 3108 | USE_SAFE_ALLOCA; |
| 3109 | |
| 3110 | registry[0] = AREF (spec, FONT_REGISTRY_INDEX); |
| 3111 | if (NILP (registry[0])) |
| 3112 | { |
| 3113 | registry[0] = DEFAULT_ENCODING; |
| 3114 | registry[1] = Qascii_0; |
| 3115 | registry[2] = zero_vector; |
| 3116 | } |
| 3117 | else |
| 3118 | registry[1] = zero_vector; |
| 3119 | |
| 3120 | if (c >= 0 && ! NILP (AREF (spec, FONT_REGISTRY_INDEX))) |
| 3121 | { |
| 3122 | struct charset *encoding, *repertory; |
| 3123 | |
| 3124 | if (font_registry_charsets (AREF (spec, FONT_REGISTRY_INDEX), |
| 3125 | &encoding, &repertory) < 0) |
| 3126 | return Qnil; |
| 3127 | if (repertory |
| 3128 | && ENCODE_CHAR (repertory, c) == CHARSET_INVALID_CODE (repertory)) |
| 3129 | return Qnil; |
| 3130 | else if (c > encoding->max_char) |
| 3131 | return Qnil; |
| 3132 | } |
| 3133 | |
| 3134 | work = copy_font_spec (spec); |
| 3135 | ASET (work, FONT_TYPE_INDEX, AREF (spec, FONT_TYPE_INDEX)); |
| 3136 | pixel_size = font_pixel_size (f, spec); |
| 3137 | if (pixel_size == 0 && INTEGERP (attrs[LFACE_HEIGHT_INDEX])) |
| 3138 | { |
| 3139 | double pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 3140 | |
| 3141 | pixel_size = POINT_TO_PIXEL (pt / 10, FRAME_RES_Y (f)); |
| 3142 | if (pixel_size < 1) |
| 3143 | pixel_size = 1; |
| 3144 | } |
| 3145 | ASET (work, FONT_SIZE_INDEX, Qnil); |
| 3146 | foundry[0] = AREF (work, FONT_FOUNDRY_INDEX); |
| 3147 | if (! NILP (foundry[0])) |
| 3148 | foundry[1] = zero_vector; |
| 3149 | else if (STRINGP (attrs[LFACE_FOUNDRY_INDEX])) |
| 3150 | { |
| 3151 | val = attrs[LFACE_FOUNDRY_INDEX]; |
| 3152 | foundry[0] = font_intern_prop (SSDATA (val), SBYTES (val), 1); |
| 3153 | foundry[1] = Qnil; |
| 3154 | foundry[2] = zero_vector; |
| 3155 | } |
| 3156 | else |
| 3157 | foundry[0] = Qnil, foundry[1] = zero_vector; |
| 3158 | |
| 3159 | adstyle[0] = AREF (work, FONT_ADSTYLE_INDEX); |
| 3160 | if (! NILP (adstyle[0])) |
| 3161 | adstyle[1] = zero_vector; |
| 3162 | else if (FONTP (attrs[LFACE_FONT_INDEX])) |
| 3163 | { |
| 3164 | Lisp_Object face_font = attrs[LFACE_FONT_INDEX]; |
| 3165 | |
| 3166 | if (! NILP (AREF (face_font, FONT_ADSTYLE_INDEX))) |
| 3167 | { |
| 3168 | adstyle[0] = AREF (face_font, FONT_ADSTYLE_INDEX); |
| 3169 | adstyle[1] = Qnil; |
| 3170 | adstyle[2] = zero_vector; |
| 3171 | } |
| 3172 | else |
| 3173 | adstyle[0] = Qnil, adstyle[1] = zero_vector; |
| 3174 | } |
| 3175 | else |
| 3176 | adstyle[0] = Qnil, adstyle[1] = zero_vector; |
| 3177 | |
| 3178 | |
| 3179 | val = AREF (work, FONT_FAMILY_INDEX); |
| 3180 | if (NILP (val) && STRINGP (attrs[LFACE_FAMILY_INDEX])) |
| 3181 | { |
| 3182 | val = attrs[LFACE_FAMILY_INDEX]; |
| 3183 | val = font_intern_prop (SSDATA (val), SBYTES (val), 1); |
| 3184 | } |
| 3185 | if (NILP (val)) |
| 3186 | { |
| 3187 | family = alloca ((sizeof family[0]) * 2); |
| 3188 | family[0] = Qnil; |
| 3189 | family[1] = zero_vector; /* terminator. */ |
| 3190 | } |
| 3191 | else |
| 3192 | { |
| 3193 | Lisp_Object alters |
| 3194 | = Fassoc_string (val, Vface_alternative_font_family_alist, Qt); |
| 3195 | |
| 3196 | if (! NILP (alters)) |
| 3197 | { |
| 3198 | EMACS_INT alterslen = XFASTINT (Flength (alters)); |
| 3199 | SAFE_ALLOCA_LISP (family, alterslen + 2); |
| 3200 | for (i = 0; CONSP (alters); i++, alters = XCDR (alters)) |
| 3201 | family[i] = XCAR (alters); |
| 3202 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 3203 | family[i++] = Qnil; |
| 3204 | family[i] = zero_vector; |
| 3205 | } |
| 3206 | else |
| 3207 | { |
| 3208 | family = alloca ((sizeof family[0]) * 3); |
| 3209 | i = 0; |
| 3210 | family[i++] = val; |
| 3211 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 3212 | family[i++] = Qnil; |
| 3213 | family[i] = zero_vector; |
| 3214 | } |
| 3215 | } |
| 3216 | |
| 3217 | for (i = 0; SYMBOLP (family[i]); i++) |
| 3218 | { |
| 3219 | ASET (work, FONT_FAMILY_INDEX, family[i]); |
| 3220 | for (j = 0; SYMBOLP (foundry[j]); j++) |
| 3221 | { |
| 3222 | ASET (work, FONT_FOUNDRY_INDEX, foundry[j]); |
| 3223 | for (k = 0; SYMBOLP (registry[k]); k++) |
| 3224 | { |
| 3225 | ASET (work, FONT_REGISTRY_INDEX, registry[k]); |
| 3226 | for (l = 0; SYMBOLP (adstyle[l]); l++) |
| 3227 | { |
| 3228 | ASET (work, FONT_ADSTYLE_INDEX, adstyle[l]); |
| 3229 | entities = font_list_entities (f, work); |
| 3230 | if (! NILP (entities)) |
| 3231 | { |
| 3232 | val = font_select_entity (f, entities, |
| 3233 | attrs, pixel_size, c); |
| 3234 | if (! NILP (val)) |
| 3235 | { |
| 3236 | SAFE_FREE (); |
| 3237 | return val; |
| 3238 | } |
| 3239 | } |
| 3240 | } |
| 3241 | } |
| 3242 | } |
| 3243 | } |
| 3244 | |
| 3245 | SAFE_FREE (); |
| 3246 | return Qnil; |
| 3247 | } |
| 3248 | |
| 3249 | |
| 3250 | Lisp_Object |
| 3251 | font_open_for_lface (struct frame *f, Lisp_Object entity, Lisp_Object *attrs, Lisp_Object spec) |
| 3252 | { |
| 3253 | int size; |
| 3254 | |
| 3255 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX)) |
| 3256 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 3257 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 3258 | else |
| 3259 | { |
| 3260 | if (FONT_SPEC_P (spec) && ! NILP (AREF (spec, FONT_SIZE_INDEX))) |
| 3261 | size = font_pixel_size (f, spec); |
| 3262 | else |
| 3263 | { |
| 3264 | double pt; |
| 3265 | if (INTEGERP (attrs[LFACE_HEIGHT_INDEX])) |
| 3266 | pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 3267 | else |
| 3268 | { |
| 3269 | struct face *def = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 3270 | Lisp_Object height = def->lface[LFACE_HEIGHT_INDEX]; |
| 3271 | eassert (INTEGERP (height)); |
| 3272 | pt = XINT (height); |
| 3273 | } |
| 3274 | |
| 3275 | pt /= 10; |
| 3276 | size = POINT_TO_PIXEL (pt, FRAME_RES_Y (f)); |
| 3277 | #ifdef HAVE_NS |
| 3278 | if (size == 0) |
| 3279 | { |
| 3280 | Lisp_Object ffsize = get_frame_param (f, Qfontsize); |
| 3281 | size = (NUMBERP (ffsize) |
| 3282 | ? POINT_TO_PIXEL (XINT (ffsize), FRAME_RES_Y (f)) : 0); |
| 3283 | } |
| 3284 | #endif |
| 3285 | } |
| 3286 | size *= font_rescale_ratio (entity); |
| 3287 | } |
| 3288 | |
| 3289 | return font_open_entity (f, entity, size); |
| 3290 | } |
| 3291 | |
| 3292 | |
| 3293 | /* Find a font that satisfies SPEC and is the best match for |
| 3294 | face's attributes in ATTRS on FRAME, and return the opened |
| 3295 | font-object. */ |
| 3296 | |
| 3297 | Lisp_Object |
| 3298 | font_load_for_lface (struct frame *f, Lisp_Object *attrs, Lisp_Object spec) |
| 3299 | { |
| 3300 | Lisp_Object entity, name; |
| 3301 | |
| 3302 | entity = font_find_for_lface (f, attrs, spec, -1); |
| 3303 | if (NILP (entity)) |
| 3304 | { |
| 3305 | /* No font is listed for SPEC, but each font-backend may have |
| 3306 | different criteria about "font matching". So, try it. */ |
| 3307 | entity = font_matching_entity (f, attrs, spec); |
| 3308 | if (NILP (entity)) |
| 3309 | return Qnil; |
| 3310 | } |
| 3311 | /* Don't lose the original name that was put in initially. We need |
| 3312 | it to re-apply the font when font parameters (like hinting or dpi) have |
| 3313 | changed. */ |
| 3314 | entity = font_open_for_lface (f, entity, attrs, spec); |
| 3315 | if (!NILP (entity)) |
| 3316 | { |
| 3317 | name = Ffont_get (spec, QCuser_spec); |
| 3318 | if (STRINGP (name)) font_put_extra (entity, QCuser_spec, name); |
| 3319 | } |
| 3320 | return entity; |
| 3321 | } |
| 3322 | |
| 3323 | |
| 3324 | /* Make FACE on frame F ready to use the font opened for FACE. */ |
| 3325 | |
| 3326 | void |
| 3327 | font_prepare_for_face (struct frame *f, struct face *face) |
| 3328 | { |
| 3329 | if (face->font->driver->prepare_face) |
| 3330 | face->font->driver->prepare_face (f, face); |
| 3331 | } |
| 3332 | |
| 3333 | |
| 3334 | /* Make FACE on frame F stop using the font opened for FACE. */ |
| 3335 | |
| 3336 | void |
| 3337 | font_done_for_face (struct frame *f, struct face *face) |
| 3338 | { |
| 3339 | if (face->font->driver->done_face) |
| 3340 | face->font->driver->done_face (f, face); |
| 3341 | } |
| 3342 | |
| 3343 | |
| 3344 | /* Open a font that is a match for font-spec SPEC on frame F. If no proper |
| 3345 | font is found, return Qnil. */ |
| 3346 | |
| 3347 | Lisp_Object |
| 3348 | font_open_by_spec (struct frame *f, Lisp_Object spec) |
| 3349 | { |
| 3350 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 3351 | |
| 3352 | /* We set up the default font-related attributes of a face to prefer |
| 3353 | a moderate font. */ |
| 3354 | attrs[LFACE_FAMILY_INDEX] = attrs[LFACE_FOUNDRY_INDEX] = Qnil; |
| 3355 | attrs[LFACE_SWIDTH_INDEX] = attrs[LFACE_WEIGHT_INDEX] |
| 3356 | = attrs[LFACE_SLANT_INDEX] = Qnormal; |
| 3357 | #ifndef HAVE_NS |
| 3358 | attrs[LFACE_HEIGHT_INDEX] = make_number (120); |
| 3359 | #else |
| 3360 | attrs[LFACE_HEIGHT_INDEX] = make_number (0); |
| 3361 | #endif |
| 3362 | attrs[LFACE_FONT_INDEX] = Qnil; |
| 3363 | |
| 3364 | return font_load_for_lface (f, attrs, spec); |
| 3365 | } |
| 3366 | |
| 3367 | |
| 3368 | /* Open a font that matches NAME on frame F. If no proper font is |
| 3369 | found, return Qnil. */ |
| 3370 | |
| 3371 | Lisp_Object |
| 3372 | font_open_by_name (struct frame *f, Lisp_Object name) |
| 3373 | { |
| 3374 | Lisp_Object args[2]; |
| 3375 | Lisp_Object spec, ret; |
| 3376 | |
| 3377 | args[0] = QCname; |
| 3378 | args[1] = name; |
| 3379 | spec = Ffont_spec (2, args); |
| 3380 | ret = font_open_by_spec (f, spec); |
| 3381 | /* Do not lose name originally put in. */ |
| 3382 | if (!NILP (ret)) |
| 3383 | font_put_extra (ret, QCuser_spec, args[1]); |
| 3384 | |
| 3385 | return ret; |
| 3386 | } |
| 3387 | |
| 3388 | |
| 3389 | /* Register font-driver DRIVER. This function is used in two ways. |
| 3390 | |
| 3391 | The first is with frame F non-NULL. In this case, make DRIVER |
| 3392 | available (but not yet activated) on F. All frame creators |
| 3393 | (e.g. Fx_create_frame) must call this function at least once with |
| 3394 | an available font-driver. |
| 3395 | |
| 3396 | The second is with frame F NULL. In this case, DRIVER is globally |
| 3397 | registered in the variable `font_driver_list'. All font-driver |
| 3398 | implementations must call this function in its syms_of_XXXX |
| 3399 | (e.g. syms_of_xfont). */ |
| 3400 | |
| 3401 | void |
| 3402 | register_font_driver (struct font_driver *driver, struct frame *f) |
| 3403 | { |
| 3404 | struct font_driver_list *root = f ? f->font_driver_list : font_driver_list; |
| 3405 | struct font_driver_list *prev, *list; |
| 3406 | |
| 3407 | #ifdef HAVE_WINDOW_SYSTEM |
| 3408 | if (f && ! driver->draw) |
| 3409 | error ("Unusable font driver for a frame: %s", |
| 3410 | SDATA (SYMBOL_NAME (driver->type))); |
| 3411 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3412 | |
| 3413 | for (prev = NULL, list = root; list; prev = list, list = list->next) |
| 3414 | if (EQ (list->driver->type, driver->type)) |
| 3415 | error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver->type))); |
| 3416 | |
| 3417 | list = xmalloc (sizeof *list); |
| 3418 | list->on = 0; |
| 3419 | list->driver = driver; |
| 3420 | list->next = NULL; |
| 3421 | if (prev) |
| 3422 | prev->next = list; |
| 3423 | else if (f) |
| 3424 | f->font_driver_list = list; |
| 3425 | else |
| 3426 | font_driver_list = list; |
| 3427 | if (! f) |
| 3428 | num_font_drivers++; |
| 3429 | } |
| 3430 | |
| 3431 | void |
| 3432 | free_font_driver_list (struct frame *f) |
| 3433 | { |
| 3434 | struct font_driver_list *list, *next; |
| 3435 | |
| 3436 | for (list = f->font_driver_list; list; list = next) |
| 3437 | { |
| 3438 | next = list->next; |
| 3439 | xfree (list); |
| 3440 | } |
| 3441 | f->font_driver_list = NULL; |
| 3442 | } |
| 3443 | |
| 3444 | |
| 3445 | /* Make the frame F use font backends listed in NEW_DRIVERS (list of |
| 3446 | symbols, e.g. xft, x). If NEW_DRIVERS is t, make F use all |
| 3447 | available font drivers. If NEW_DRIVERS is nil, finalize all drivers. |
| 3448 | |
| 3449 | A caller must free all realized faces if any in advance. The |
| 3450 | return value is a list of font backends actually made used on |
| 3451 | F. */ |
| 3452 | |
| 3453 | Lisp_Object |
| 3454 | font_update_drivers (struct frame *f, Lisp_Object new_drivers) |
| 3455 | { |
| 3456 | Lisp_Object active_drivers = Qnil; |
| 3457 | struct font_driver_list *list; |
| 3458 | |
| 3459 | /* At first, turn off non-requested drivers, and turn on requested |
| 3460 | drivers. */ |
| 3461 | for (list = f->font_driver_list; list; list = list->next) |
| 3462 | { |
| 3463 | struct font_driver *driver = list->driver; |
| 3464 | if ((EQ (new_drivers, Qt) || ! NILP (Fmemq (driver->type, new_drivers))) |
| 3465 | != list->on) |
| 3466 | { |
| 3467 | if (list->on) |
| 3468 | { |
| 3469 | if (driver->end_for_frame) |
| 3470 | driver->end_for_frame (f); |
| 3471 | font_finish_cache (f, driver); |
| 3472 | list->on = 0; |
| 3473 | } |
| 3474 | else |
| 3475 | { |
| 3476 | if (! driver->start_for_frame |
| 3477 | || driver->start_for_frame (f) == 0) |
| 3478 | { |
| 3479 | font_prepare_cache (f, driver); |
| 3480 | list->on = 1; |
| 3481 | } |
| 3482 | } |
| 3483 | } |
| 3484 | } |
| 3485 | |
| 3486 | if (NILP (new_drivers)) |
| 3487 | return Qnil; |
| 3488 | |
| 3489 | if (! EQ (new_drivers, Qt)) |
| 3490 | { |
| 3491 | /* Re-order the driver list according to new_drivers. */ |
| 3492 | struct font_driver_list **list_table, **next; |
| 3493 | Lisp_Object tail; |
| 3494 | int i; |
| 3495 | |
| 3496 | list_table = alloca (sizeof list_table[0] * (num_font_drivers + 1)); |
| 3497 | for (i = 0, tail = new_drivers; ! NILP (tail); tail = XCDR (tail)) |
| 3498 | { |
| 3499 | for (list = f->font_driver_list; list; list = list->next) |
| 3500 | if (list->on && EQ (list->driver->type, XCAR (tail))) |
| 3501 | break; |
| 3502 | if (list) |
| 3503 | list_table[i++] = list; |
| 3504 | } |
| 3505 | for (list = f->font_driver_list; list; list = list->next) |
| 3506 | if (! list->on) |
| 3507 | list_table[i++] = list; |
| 3508 | list_table[i] = NULL; |
| 3509 | |
| 3510 | next = &f->font_driver_list; |
| 3511 | for (i = 0; list_table[i]; i++) |
| 3512 | { |
| 3513 | *next = list_table[i]; |
| 3514 | next = &(*next)->next; |
| 3515 | } |
| 3516 | *next = NULL; |
| 3517 | |
| 3518 | if (! f->font_driver_list->on) |
| 3519 | { /* None of the drivers is enabled: enable them all. |
| 3520 | Happens if you set the list of drivers to (xft x) in your .emacs |
| 3521 | and then use it under w32 or ns. */ |
| 3522 | for (list = f->font_driver_list; list; list = list->next) |
| 3523 | { |
| 3524 | struct font_driver *driver = list->driver; |
| 3525 | eassert (! list->on); |
| 3526 | if (! driver->start_for_frame |
| 3527 | || driver->start_for_frame (f) == 0) |
| 3528 | { |
| 3529 | font_prepare_cache (f, driver); |
| 3530 | list->on = 1; |
| 3531 | } |
| 3532 | } |
| 3533 | } |
| 3534 | } |
| 3535 | |
| 3536 | for (list = f->font_driver_list; list; list = list->next) |
| 3537 | if (list->on) |
| 3538 | active_drivers = nconc2 (active_drivers, list1 (list->driver->type)); |
| 3539 | return active_drivers; |
| 3540 | } |
| 3541 | |
| 3542 | int |
| 3543 | font_put_frame_data (struct frame *f, struct font_driver *driver, void *data) |
| 3544 | { |
| 3545 | struct font_data_list *list, *prev; |
| 3546 | |
| 3547 | for (prev = NULL, list = f->font_data_list; list; |
| 3548 | prev = list, list = list->next) |
| 3549 | if (list->driver == driver) |
| 3550 | break; |
| 3551 | if (! data) |
| 3552 | { |
| 3553 | if (list) |
| 3554 | { |
| 3555 | if (prev) |
| 3556 | prev->next = list->next; |
| 3557 | else |
| 3558 | f->font_data_list = list->next; |
| 3559 | xfree (list); |
| 3560 | } |
| 3561 | return 0; |
| 3562 | } |
| 3563 | |
| 3564 | if (! list) |
| 3565 | { |
| 3566 | list = xmalloc (sizeof *list); |
| 3567 | list->driver = driver; |
| 3568 | list->next = f->font_data_list; |
| 3569 | f->font_data_list = list; |
| 3570 | } |
| 3571 | list->data = data; |
| 3572 | return 0; |
| 3573 | } |
| 3574 | |
| 3575 | |
| 3576 | void * |
| 3577 | font_get_frame_data (struct frame *f, struct font_driver *driver) |
| 3578 | { |
| 3579 | struct font_data_list *list; |
| 3580 | |
| 3581 | for (list = f->font_data_list; list; list = list->next) |
| 3582 | if (list->driver == driver) |
| 3583 | break; |
| 3584 | if (! list) |
| 3585 | return NULL; |
| 3586 | return list->data; |
| 3587 | } |
| 3588 | |
| 3589 | |
| 3590 | /* Sets attributes on a font. Any properties that appear in ALIST and |
| 3591 | BOOLEAN_PROPERTIES or NON_BOOLEAN_PROPERTIES are set on the font. |
| 3592 | BOOLEAN_PROPERTIES and NON_BOOLEAN_PROPERTIES are NULL-terminated |
| 3593 | arrays of strings. This function is intended for use by the font |
| 3594 | drivers to implement their specific font_filter_properties. */ |
| 3595 | void |
| 3596 | font_filter_properties (Lisp_Object font, |
| 3597 | Lisp_Object alist, |
| 3598 | const char *const boolean_properties[], |
| 3599 | const char *const non_boolean_properties[]) |
| 3600 | { |
| 3601 | Lisp_Object it; |
| 3602 | int i; |
| 3603 | |
| 3604 | /* Set boolean values to Qt or Qnil. */ |
| 3605 | for (i = 0; boolean_properties[i] != NULL; ++i) |
| 3606 | for (it = alist; ! NILP (it); it = XCDR (it)) |
| 3607 | { |
| 3608 | Lisp_Object key = XCAR (XCAR (it)); |
| 3609 | Lisp_Object val = XCDR (XCAR (it)); |
| 3610 | char *keystr = SSDATA (SYMBOL_NAME (key)); |
| 3611 | |
| 3612 | if (strcmp (boolean_properties[i], keystr) == 0) |
| 3613 | { |
| 3614 | const char *str = INTEGERP (val) ? (XINT (val) ? "true" : "false") |
| 3615 | : SYMBOLP (val) ? SSDATA (SYMBOL_NAME (val)) |
| 3616 | : "true"; |
| 3617 | |
| 3618 | if (strcmp ("false", str) == 0 || strcmp ("False", str) == 0 |
| 3619 | || strcmp ("FALSE", str) == 0 || strcmp ("FcFalse", str) == 0 |
| 3620 | || strcmp ("off", str) == 0 || strcmp ("OFF", str) == 0 |
| 3621 | || strcmp ("Off", str) == 0) |
| 3622 | val = Qnil; |
| 3623 | else |
| 3624 | val = Qt; |
| 3625 | |
| 3626 | Ffont_put (font, key, val); |
| 3627 | } |
| 3628 | } |
| 3629 | |
| 3630 | for (i = 0; non_boolean_properties[i] != NULL; ++i) |
| 3631 | for (it = alist; ! NILP (it); it = XCDR (it)) |
| 3632 | { |
| 3633 | Lisp_Object key = XCAR (XCAR (it)); |
| 3634 | Lisp_Object val = XCDR (XCAR (it)); |
| 3635 | char *keystr = SSDATA (SYMBOL_NAME (key)); |
| 3636 | if (strcmp (non_boolean_properties[i], keystr) == 0) |
| 3637 | Ffont_put (font, key, val); |
| 3638 | } |
| 3639 | } |
| 3640 | |
| 3641 | |
| 3642 | /* Return the font used to draw character C by FACE at buffer position |
| 3643 | POS in window W. If STRING is non-nil, it is a string containing C |
| 3644 | at index POS. If C is negative, get C from the current buffer or |
| 3645 | STRING. */ |
| 3646 | |
| 3647 | static Lisp_Object |
| 3648 | font_at (int c, ptrdiff_t pos, struct face *face, struct window *w, |
| 3649 | Lisp_Object string) |
| 3650 | { |
| 3651 | struct frame *f; |
| 3652 | bool multibyte; |
| 3653 | Lisp_Object font_object; |
| 3654 | |
| 3655 | multibyte = (NILP (string) |
| 3656 | ? ! NILP (BVAR (current_buffer, enable_multibyte_characters)) |
| 3657 | : STRING_MULTIBYTE (string)); |
| 3658 | if (c < 0) |
| 3659 | { |
| 3660 | if (NILP (string)) |
| 3661 | { |
| 3662 | if (multibyte) |
| 3663 | { |
| 3664 | ptrdiff_t pos_byte = CHAR_TO_BYTE (pos); |
| 3665 | |
| 3666 | c = FETCH_CHAR (pos_byte); |
| 3667 | } |
| 3668 | else |
| 3669 | c = FETCH_BYTE (pos); |
| 3670 | } |
| 3671 | else |
| 3672 | { |
| 3673 | unsigned char *str; |
| 3674 | |
| 3675 | multibyte = STRING_MULTIBYTE (string); |
| 3676 | if (multibyte) |
| 3677 | { |
| 3678 | ptrdiff_t pos_byte = string_char_to_byte (string, pos); |
| 3679 | |
| 3680 | str = SDATA (string) + pos_byte; |
| 3681 | c = STRING_CHAR (str); |
| 3682 | } |
| 3683 | else |
| 3684 | c = SDATA (string)[pos]; |
| 3685 | } |
| 3686 | } |
| 3687 | |
| 3688 | f = XFRAME (w->frame); |
| 3689 | if (! FRAME_WINDOW_P (f)) |
| 3690 | return Qnil; |
| 3691 | if (! face) |
| 3692 | { |
| 3693 | int face_id; |
| 3694 | ptrdiff_t endptr; |
| 3695 | |
| 3696 | if (STRINGP (string)) |
| 3697 | face_id = face_at_string_position (w, string, pos, 0, &endptr, |
| 3698 | DEFAULT_FACE_ID, 0); |
| 3699 | else |
| 3700 | face_id = face_at_buffer_position (w, pos, &endptr, |
| 3701 | pos + 100, 0, -1); |
| 3702 | face = FACE_FROM_ID (f, face_id); |
| 3703 | } |
| 3704 | if (multibyte) |
| 3705 | { |
| 3706 | int face_id = FACE_FOR_CHAR (f, face, c, pos, string); |
| 3707 | face = FACE_FROM_ID (f, face_id); |
| 3708 | } |
| 3709 | if (! face->font) |
| 3710 | return Qnil; |
| 3711 | |
| 3712 | XSETFONT (font_object, face->font); |
| 3713 | return font_object; |
| 3714 | } |
| 3715 | |
| 3716 | |
| 3717 | #ifdef HAVE_WINDOW_SYSTEM |
| 3718 | |
| 3719 | /* Check how many characters after character/byte position POS/POS_BYTE |
| 3720 | (at most to *LIMIT) can be displayed by the same font in the window W. |
| 3721 | FACE, if non-NULL, is the face selected for the character at POS. |
| 3722 | If STRING is not nil, it is the string to check instead of the current |
| 3723 | buffer. In that case, FACE must be not NULL. |
| 3724 | |
| 3725 | The return value is the font-object for the character at POS. |
| 3726 | *LIMIT is set to the position where that font can't be used. |
| 3727 | |
| 3728 | It is assured that the current buffer (or STRING) is multibyte. */ |
| 3729 | |
| 3730 | Lisp_Object |
| 3731 | font_range (ptrdiff_t pos, ptrdiff_t pos_byte, ptrdiff_t *limit, |
| 3732 | struct window *w, struct face *face, Lisp_Object string) |
| 3733 | { |
| 3734 | ptrdiff_t ignore; |
| 3735 | int c; |
| 3736 | Lisp_Object font_object = Qnil; |
| 3737 | |
| 3738 | if (NILP (string)) |
| 3739 | { |
| 3740 | if (! face) |
| 3741 | { |
| 3742 | int face_id; |
| 3743 | |
| 3744 | face_id = face_at_buffer_position (w, pos, &ignore, |
| 3745 | *limit, 0, -1); |
| 3746 | face = FACE_FROM_ID (XFRAME (w->frame), face_id); |
| 3747 | } |
| 3748 | } |
| 3749 | else |
| 3750 | eassert (face); |
| 3751 | |
| 3752 | while (pos < *limit) |
| 3753 | { |
| 3754 | Lisp_Object category; |
| 3755 | |
| 3756 | if (NILP (string)) |
| 3757 | FETCH_CHAR_ADVANCE_NO_CHECK (c, pos, pos_byte); |
| 3758 | else |
| 3759 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, pos, pos_byte); |
| 3760 | category = CHAR_TABLE_REF (Vunicode_category_table, c); |
| 3761 | if (INTEGERP (category) |
| 3762 | && (XINT (category) == UNICODE_CATEGORY_Cf |
| 3763 | || CHAR_VARIATION_SELECTOR_P (c))) |
| 3764 | continue; |
| 3765 | if (NILP (font_object)) |
| 3766 | { |
| 3767 | font_object = font_for_char (face, c, pos - 1, string); |
| 3768 | if (NILP (font_object)) |
| 3769 | return Qnil; |
| 3770 | continue; |
| 3771 | } |
| 3772 | if (font_encode_char (font_object, c) == FONT_INVALID_CODE) |
| 3773 | *limit = pos - 1; |
| 3774 | } |
| 3775 | return font_object; |
| 3776 | } |
| 3777 | #endif |
| 3778 | |
| 3779 | \f |
| 3780 | /* Lisp API. */ |
| 3781 | |
| 3782 | DEFUN ("fontp", Ffontp, Sfontp, 1, 2, 0, |
| 3783 | doc: /* Return t if OBJECT is a font-spec, font-entity, or font-object. |
| 3784 | Return nil otherwise. |
| 3785 | Optional 2nd argument EXTRA-TYPE, if non-nil, specifies to check |
| 3786 | which kind of font it is. It must be one of `font-spec', `font-entity', |
| 3787 | `font-object'. */) |
| 3788 | (Lisp_Object object, Lisp_Object extra_type) |
| 3789 | { |
| 3790 | if (NILP (extra_type)) |
| 3791 | return (FONTP (object) ? Qt : Qnil); |
| 3792 | if (EQ (extra_type, Qfont_spec)) |
| 3793 | return (FONT_SPEC_P (object) ? Qt : Qnil); |
| 3794 | if (EQ (extra_type, Qfont_entity)) |
| 3795 | return (FONT_ENTITY_P (object) ? Qt : Qnil); |
| 3796 | if (EQ (extra_type, Qfont_object)) |
| 3797 | return (FONT_OBJECT_P (object) ? Qt : Qnil); |
| 3798 | wrong_type_argument (intern ("font-extra-type"), extra_type); |
| 3799 | } |
| 3800 | |
| 3801 | DEFUN ("font-spec", Ffont_spec, Sfont_spec, 0, MANY, 0, |
| 3802 | doc: /* Return a newly created font-spec with arguments as properties. |
| 3803 | |
| 3804 | ARGS must come in pairs KEY VALUE of font properties. KEY must be a |
| 3805 | valid font property name listed below: |
| 3806 | |
| 3807 | `:family', `:weight', `:slant', `:width' |
| 3808 | |
| 3809 | They are the same as face attributes of the same name. See |
| 3810 | `set-face-attribute'. |
| 3811 | |
| 3812 | `:foundry' |
| 3813 | |
| 3814 | VALUE must be a string or a symbol specifying the font foundry, e.g. ``misc''. |
| 3815 | |
| 3816 | `:adstyle' |
| 3817 | |
| 3818 | VALUE must be a string or a symbol specifying the additional |
| 3819 | typographic style information of a font, e.g. ``sans''. |
| 3820 | |
| 3821 | `:registry' |
| 3822 | |
| 3823 | VALUE must be a string or a symbol specifying the charset registry and |
| 3824 | encoding of a font, e.g. ``iso8859-1''. |
| 3825 | |
| 3826 | `:size' |
| 3827 | |
| 3828 | VALUE must be a non-negative integer or a floating point number |
| 3829 | specifying the font size. It specifies the font size in pixels (if |
| 3830 | VALUE is an integer), or in points (if VALUE is a float). |
| 3831 | |
| 3832 | `:name' |
| 3833 | |
| 3834 | VALUE must be a string of XLFD-style or fontconfig-style font name. |
| 3835 | |
| 3836 | `:script' |
| 3837 | |
| 3838 | VALUE must be a symbol representing a script that the font must |
| 3839 | support. It may be a symbol representing a subgroup of a script |
| 3840 | listed in the variable `script-representative-chars'. |
| 3841 | |
| 3842 | `:lang' |
| 3843 | |
| 3844 | VALUE must be a symbol of two-letter ISO-639 language names, |
| 3845 | e.g. `ja'. |
| 3846 | |
| 3847 | `:otf' |
| 3848 | |
| 3849 | VALUE must be a list (SCRIPT-TAG LANGSYS-TAG GSUB [ GPOS ]) to specify |
| 3850 | required OpenType features. |
| 3851 | |
| 3852 | SCRIPT-TAG: OpenType script tag symbol (e.g. `deva'). |
| 3853 | LANGSYS-TAG: OpenType language system tag symbol, |
| 3854 | or nil for the default language system. |
| 3855 | GSUB: List of OpenType GSUB feature tag symbols, or nil if none required. |
| 3856 | GPOS: List of OpenType GPOS feature tag symbols, or nil if none required. |
| 3857 | |
| 3858 | GSUB and GPOS may contain `nil' element. In such a case, the font |
| 3859 | must not have any of the remaining elements. |
| 3860 | |
| 3861 | For instance, if the VALUE is `(thai nil nil (mark))', the font must |
| 3862 | be an OpenType font whose GPOS table of `thai' script's default |
| 3863 | language system must contain `mark' feature. |
| 3864 | |
| 3865 | usage: (font-spec ARGS...) */) |
| 3866 | (ptrdiff_t nargs, Lisp_Object *args) |
| 3867 | { |
| 3868 | Lisp_Object spec = font_make_spec (); |
| 3869 | ptrdiff_t i; |
| 3870 | |
| 3871 | for (i = 0; i < nargs; i += 2) |
| 3872 | { |
| 3873 | Lisp_Object key = args[i], val; |
| 3874 | |
| 3875 | CHECK_SYMBOL (key); |
| 3876 | if (i + 1 >= nargs) |
| 3877 | error ("No value for key `%s'", SDATA (SYMBOL_NAME (key))); |
| 3878 | val = args[i + 1]; |
| 3879 | |
| 3880 | if (EQ (key, QCname)) |
| 3881 | { |
| 3882 | CHECK_STRING (val); |
| 3883 | if (font_parse_name (SSDATA (val), SBYTES (val), spec) < 0) |
| 3884 | error ("Invalid font name: %s", SSDATA (val)); |
| 3885 | font_put_extra (spec, key, val); |
| 3886 | } |
| 3887 | else |
| 3888 | { |
| 3889 | int idx = get_font_prop_index (key); |
| 3890 | |
| 3891 | if (idx >= 0) |
| 3892 | { |
| 3893 | val = font_prop_validate (idx, Qnil, val); |
| 3894 | if (idx < FONT_EXTRA_INDEX) |
| 3895 | ASET (spec, idx, val); |
| 3896 | else |
| 3897 | font_put_extra (spec, key, val); |
| 3898 | } |
| 3899 | else |
| 3900 | font_put_extra (spec, key, font_prop_validate (0, key, val)); |
| 3901 | } |
| 3902 | } |
| 3903 | return spec; |
| 3904 | } |
| 3905 | |
| 3906 | /* Return a copy of FONT as a font-spec. */ |
| 3907 | Lisp_Object |
| 3908 | copy_font_spec (Lisp_Object font) |
| 3909 | { |
| 3910 | Lisp_Object new_spec, tail, prev, extra; |
| 3911 | int i; |
| 3912 | |
| 3913 | CHECK_FONT (font); |
| 3914 | new_spec = font_make_spec (); |
| 3915 | for (i = 1; i < FONT_EXTRA_INDEX; i++) |
| 3916 | ASET (new_spec, i, AREF (font, i)); |
| 3917 | extra = Fcopy_alist (AREF (font, FONT_EXTRA_INDEX)); |
| 3918 | /* We must remove :font-entity property. */ |
| 3919 | for (prev = Qnil, tail = extra; CONSP (tail); prev = tail, tail = XCDR (tail)) |
| 3920 | if (EQ (XCAR (XCAR (tail)), QCfont_entity)) |
| 3921 | { |
| 3922 | if (NILP (prev)) |
| 3923 | extra = XCDR (extra); |
| 3924 | else |
| 3925 | XSETCDR (prev, XCDR (tail)); |
| 3926 | break; |
| 3927 | } |
| 3928 | ASET (new_spec, FONT_EXTRA_INDEX, extra); |
| 3929 | return new_spec; |
| 3930 | } |
| 3931 | |
| 3932 | /* Merge font-specs FROM and TO, and return a new font-spec. |
| 3933 | Every specified property in FROM overrides the corresponding |
| 3934 | property in TO. */ |
| 3935 | Lisp_Object |
| 3936 | merge_font_spec (Lisp_Object from, Lisp_Object to) |
| 3937 | { |
| 3938 | Lisp_Object extra, tail; |
| 3939 | int i; |
| 3940 | |
| 3941 | CHECK_FONT (from); |
| 3942 | CHECK_FONT (to); |
| 3943 | to = copy_font_spec (to); |
| 3944 | for (i = 0; i < FONT_EXTRA_INDEX; i++) |
| 3945 | ASET (to, i, AREF (from, i)); |
| 3946 | extra = AREF (to, FONT_EXTRA_INDEX); |
| 3947 | for (tail = AREF (from, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
| 3948 | if (! EQ (XCAR (XCAR (tail)), Qfont_entity)) |
| 3949 | { |
| 3950 | Lisp_Object slot = assq_no_quit (XCAR (XCAR (tail)), extra); |
| 3951 | |
| 3952 | if (! NILP (slot)) |
| 3953 | XSETCDR (slot, XCDR (XCAR (tail))); |
| 3954 | else |
| 3955 | extra = Fcons (Fcons (XCAR (XCAR (tail)), XCDR (XCAR (tail))), extra); |
| 3956 | } |
| 3957 | ASET (to, FONT_EXTRA_INDEX, extra); |
| 3958 | return to; |
| 3959 | } |
| 3960 | |
| 3961 | DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0, |
| 3962 | doc: /* Return the value of FONT's property KEY. |
| 3963 | FONT is a font-spec, a font-entity, or a font-object. |
| 3964 | KEY is any symbol, but these are reserved for specific meanings: |
| 3965 | :family, :weight, :slant, :width, :foundry, :adstyle, :registry, |
| 3966 | :size, :name, :script, :otf |
| 3967 | See the documentation of `font-spec' for their meanings. |
| 3968 | In addition, if FONT is a font-entity or a font-object, values of |
| 3969 | :script and :otf are different from those of a font-spec as below: |
| 3970 | |
| 3971 | The value of :script may be a list of scripts that are supported by the font. |
| 3972 | |
| 3973 | The value of :otf is a cons (GSUB . GPOS) where GSUB and GPOS are lists |
| 3974 | representing the OpenType features supported by the font by this form: |
| 3975 | ((SCRIPT (LANGSYS FEATURE ...) ...) ...) |
| 3976 | SCRIPT, LANGSYS, and FEATURE are all symbols representing OpenType |
| 3977 | Layout tags. */) |
| 3978 | (Lisp_Object font, Lisp_Object key) |
| 3979 | { |
| 3980 | int idx; |
| 3981 | Lisp_Object val; |
| 3982 | |
| 3983 | CHECK_FONT (font); |
| 3984 | CHECK_SYMBOL (key); |
| 3985 | |
| 3986 | idx = get_font_prop_index (key); |
| 3987 | if (idx >= FONT_WEIGHT_INDEX && idx <= FONT_WIDTH_INDEX) |
| 3988 | return font_style_symbolic (font, idx, 0); |
| 3989 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 3990 | return AREF (font, idx); |
| 3991 | val = Fassq (key, AREF (font, FONT_EXTRA_INDEX)); |
| 3992 | if (NILP (val) && EQ (key, QCotf) && FONT_OBJECT_P (font)) |
| 3993 | { |
| 3994 | struct font *fontp = XFONT_OBJECT (font); |
| 3995 | |
| 3996 | if (fontp->driver->otf_capability) |
| 3997 | val = fontp->driver->otf_capability (fontp); |
| 3998 | else |
| 3999 | val = Fcons (Qnil, Qnil); |
| 4000 | } |
| 4001 | else |
| 4002 | val = Fcdr (val); |
| 4003 | return val; |
| 4004 | } |
| 4005 | |
| 4006 | #ifdef HAVE_WINDOW_SYSTEM |
| 4007 | |
| 4008 | DEFUN ("font-face-attributes", Ffont_face_attributes, Sfont_face_attributes, 1, 2, 0, |
| 4009 | doc: /* Return a plist of face attributes generated by FONT. |
| 4010 | FONT is a font name, a font-spec, a font-entity, or a font-object. |
| 4011 | The return value is a list of the form |
| 4012 | |
| 4013 | \(:family FAMILY :height HEIGHT :weight WEIGHT :slant SLANT :width WIDTH) |
| 4014 | |
| 4015 | where FAMILY, HEIGHT, WEIGHT, SLANT, and WIDTH are face attribute values |
| 4016 | compatible with `set-face-attribute'. Some of these key-attribute pairs |
| 4017 | may be omitted from the list if they are not specified by FONT. |
| 4018 | |
| 4019 | The optional argument FRAME specifies the frame that the face attributes |
| 4020 | are to be displayed on. If omitted, the selected frame is used. */) |
| 4021 | (Lisp_Object font, Lisp_Object frame) |
| 4022 | { |
| 4023 | struct frame *f = decode_live_frame (frame); |
| 4024 | Lisp_Object plist[10]; |
| 4025 | Lisp_Object val; |
| 4026 | int n = 0; |
| 4027 | |
| 4028 | if (STRINGP (font)) |
| 4029 | { |
| 4030 | int fontset = fs_query_fontset (font, 0); |
| 4031 | Lisp_Object name = font; |
| 4032 | if (fontset >= 0) |
| 4033 | font = fontset_ascii (fontset); |
| 4034 | font = font_spec_from_name (name); |
| 4035 | if (! FONTP (font)) |
| 4036 | signal_error ("Invalid font name", name); |
| 4037 | } |
| 4038 | else if (! FONTP (font)) |
| 4039 | signal_error ("Invalid font object", font); |
| 4040 | |
| 4041 | val = AREF (font, FONT_FAMILY_INDEX); |
| 4042 | if (! NILP (val)) |
| 4043 | { |
| 4044 | plist[n++] = QCfamily; |
| 4045 | plist[n++] = SYMBOL_NAME (val); |
| 4046 | } |
| 4047 | |
| 4048 | val = AREF (font, FONT_SIZE_INDEX); |
| 4049 | if (INTEGERP (val)) |
| 4050 | { |
| 4051 | Lisp_Object font_dpi = AREF (font, FONT_DPI_INDEX); |
| 4052 | int dpi = INTEGERP (font_dpi) ? XINT (font_dpi) : FRAME_RES_Y (f); |
| 4053 | plist[n++] = QCheight; |
| 4054 | plist[n++] = make_number (PIXEL_TO_POINT (XINT (val) * 10, dpi)); |
| 4055 | } |
| 4056 | else if (FLOATP (val)) |
| 4057 | { |
| 4058 | plist[n++] = QCheight; |
| 4059 | plist[n++] = make_number (10 * (int) XFLOAT_DATA (val)); |
| 4060 | } |
| 4061 | |
| 4062 | val = FONT_WEIGHT_FOR_FACE (font); |
| 4063 | if (! NILP (val)) |
| 4064 | { |
| 4065 | plist[n++] = QCweight; |
| 4066 | plist[n++] = val; |
| 4067 | } |
| 4068 | |
| 4069 | val = FONT_SLANT_FOR_FACE (font); |
| 4070 | if (! NILP (val)) |
| 4071 | { |
| 4072 | plist[n++] = QCslant; |
| 4073 | plist[n++] = val; |
| 4074 | } |
| 4075 | |
| 4076 | val = FONT_WIDTH_FOR_FACE (font); |
| 4077 | if (! NILP (val)) |
| 4078 | { |
| 4079 | plist[n++] = QCwidth; |
| 4080 | plist[n++] = val; |
| 4081 | } |
| 4082 | |
| 4083 | return Flist (n, plist); |
| 4084 | } |
| 4085 | |
| 4086 | #endif |
| 4087 | |
| 4088 | DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0, |
| 4089 | doc: /* Set one property of FONT: give property KEY value VAL. |
| 4090 | FONT is a font-spec, a font-entity, or a font-object. |
| 4091 | |
| 4092 | If FONT is a font-spec, KEY can be any symbol. But if KEY is the one |
| 4093 | accepted by the function `font-spec' (which see), VAL must be what |
| 4094 | allowed in `font-spec'. |
| 4095 | |
| 4096 | If FONT is a font-entity or a font-object, KEY must not be the one |
| 4097 | accepted by `font-spec'. */) |
| 4098 | (Lisp_Object font, Lisp_Object prop, Lisp_Object val) |
| 4099 | { |
| 4100 | int idx; |
| 4101 | |
| 4102 | idx = get_font_prop_index (prop); |
| 4103 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 4104 | { |
| 4105 | CHECK_FONT_SPEC (font); |
| 4106 | ASET (font, idx, font_prop_validate (idx, Qnil, val)); |
| 4107 | } |
| 4108 | else |
| 4109 | { |
| 4110 | if (EQ (prop, QCname) |
| 4111 | || EQ (prop, QCscript) |
| 4112 | || EQ (prop, QClang) |
| 4113 | || EQ (prop, QCotf)) |
| 4114 | CHECK_FONT_SPEC (font); |
| 4115 | else |
| 4116 | CHECK_FONT (font); |
| 4117 | font_put_extra (font, prop, font_prop_validate (0, prop, val)); |
| 4118 | } |
| 4119 | return val; |
| 4120 | } |
| 4121 | |
| 4122 | DEFUN ("list-fonts", Flist_fonts, Slist_fonts, 1, 4, 0, |
| 4123 | doc: /* List available fonts matching FONT-SPEC on the current frame. |
| 4124 | Optional 2nd argument FRAME specifies the target frame. |
| 4125 | Optional 3rd argument NUM, if non-nil, limits the number of returned fonts. |
| 4126 | Optional 4th argument PREFER, if non-nil, is a font-spec to |
| 4127 | control the order of the returned list. Fonts are sorted by |
| 4128 | how close they are to PREFER. */) |
| 4129 | (Lisp_Object font_spec, Lisp_Object frame, Lisp_Object num, Lisp_Object prefer) |
| 4130 | { |
| 4131 | struct frame *f = decode_live_frame (frame); |
| 4132 | Lisp_Object vec, list; |
| 4133 | EMACS_INT n = 0; |
| 4134 | |
| 4135 | CHECK_FONT_SPEC (font_spec); |
| 4136 | if (! NILP (num)) |
| 4137 | { |
| 4138 | CHECK_NUMBER (num); |
| 4139 | n = XINT (num); |
| 4140 | if (n <= 0) |
| 4141 | return Qnil; |
| 4142 | } |
| 4143 | if (! NILP (prefer)) |
| 4144 | CHECK_FONT_SPEC (prefer); |
| 4145 | |
| 4146 | list = font_list_entities (f, font_spec); |
| 4147 | if (NILP (list)) |
| 4148 | return Qnil; |
| 4149 | if (NILP (XCDR (list)) |
| 4150 | && ASIZE (XCAR (list)) == 1) |
| 4151 | return list1 (AREF (XCAR (list), 0)); |
| 4152 | |
| 4153 | if (! NILP (prefer)) |
| 4154 | vec = font_sort_entities (list, prefer, f, 0); |
| 4155 | else |
| 4156 | vec = font_vconcat_entity_vectors (list); |
| 4157 | if (n == 0 || n >= ASIZE (vec)) |
| 4158 | { |
| 4159 | Lisp_Object args[2]; |
| 4160 | |
| 4161 | args[0] = vec; |
| 4162 | args[1] = Qnil; |
| 4163 | list = Fappend (2, args); |
| 4164 | } |
| 4165 | else |
| 4166 | { |
| 4167 | for (list = Qnil, n--; n >= 0; n--) |
| 4168 | list = Fcons (AREF (vec, n), list); |
| 4169 | } |
| 4170 | return list; |
| 4171 | } |
| 4172 | |
| 4173 | DEFUN ("font-family-list", Ffont_family_list, Sfont_family_list, 0, 1, 0, |
| 4174 | doc: /* List available font families on the current frame. |
| 4175 | If FRAME is omitted or nil, the selected frame is used. */) |
| 4176 | (Lisp_Object frame) |
| 4177 | { |
| 4178 | struct frame *f = decode_live_frame (frame); |
| 4179 | struct font_driver_list *driver_list; |
| 4180 | Lisp_Object list = Qnil; |
| 4181 | |
| 4182 | for (driver_list = f->font_driver_list; driver_list; |
| 4183 | driver_list = driver_list->next) |
| 4184 | if (driver_list->driver->list_family) |
| 4185 | { |
| 4186 | Lisp_Object val = driver_list->driver->list_family (f); |
| 4187 | Lisp_Object tail = list; |
| 4188 | |
| 4189 | for (; CONSP (val); val = XCDR (val)) |
| 4190 | if (NILP (Fmemq (XCAR (val), tail)) |
| 4191 | && SYMBOLP (XCAR (val))) |
| 4192 | list = Fcons (SYMBOL_NAME (XCAR (val)), list); |
| 4193 | } |
| 4194 | return list; |
| 4195 | } |
| 4196 | |
| 4197 | DEFUN ("find-font", Ffind_font, Sfind_font, 1, 2, 0, |
| 4198 | doc: /* Return a font-entity matching with FONT-SPEC on the current frame. |
| 4199 | Optional 2nd argument FRAME, if non-nil, specifies the target frame. */) |
| 4200 | (Lisp_Object font_spec, Lisp_Object frame) |
| 4201 | { |
| 4202 | Lisp_Object val = Flist_fonts (font_spec, frame, make_number (1), Qnil); |
| 4203 | |
| 4204 | if (CONSP (val)) |
| 4205 | val = XCAR (val); |
| 4206 | return val; |
| 4207 | } |
| 4208 | |
| 4209 | DEFUN ("font-xlfd-name", Ffont_xlfd_name, Sfont_xlfd_name, 1, 2, 0, |
| 4210 | doc: /* Return XLFD name of FONT. |
| 4211 | FONT is a font-spec, font-entity, or font-object. |
| 4212 | If the name is too long for XLFD (maximum 255 chars), return nil. |
| 4213 | If the 2nd optional arg FOLD-WILDCARDS is non-nil, |
| 4214 | the consecutive wildcards are folded into one. */) |
| 4215 | (Lisp_Object font, Lisp_Object fold_wildcards) |
| 4216 | { |
| 4217 | char name[256]; |
| 4218 | int namelen, pixel_size = 0; |
| 4219 | |
| 4220 | CHECK_FONT (font); |
| 4221 | |
| 4222 | if (FONT_OBJECT_P (font)) |
| 4223 | { |
| 4224 | Lisp_Object font_name = AREF (font, FONT_NAME_INDEX); |
| 4225 | |
| 4226 | if (STRINGP (font_name) |
| 4227 | && SDATA (font_name)[0] == '-') |
| 4228 | { |
| 4229 | if (NILP (fold_wildcards)) |
| 4230 | return font_name; |
| 4231 | strcpy (name, SSDATA (font_name)); |
| 4232 | namelen = SBYTES (font_name); |
| 4233 | goto done; |
| 4234 | } |
| 4235 | pixel_size = XFONT_OBJECT (font)->pixel_size; |
| 4236 | } |
| 4237 | namelen = font_unparse_xlfd (font, pixel_size, name, 256); |
| 4238 | if (namelen < 0) |
| 4239 | return Qnil; |
| 4240 | done: |
| 4241 | if (! NILP (fold_wildcards)) |
| 4242 | { |
| 4243 | char *p0 = name, *p1; |
| 4244 | |
| 4245 | while ((p1 = strstr (p0, "-*-*"))) |
| 4246 | { |
| 4247 | strcpy (p1, p1 + 2); |
| 4248 | namelen -= 2; |
| 4249 | p0 = p1; |
| 4250 | } |
| 4251 | } |
| 4252 | |
| 4253 | return make_string (name, namelen); |
| 4254 | } |
| 4255 | |
| 4256 | void |
| 4257 | clear_font_cache (struct frame *f) |
| 4258 | { |
| 4259 | struct font_driver_list *driver_list = f->font_driver_list; |
| 4260 | |
| 4261 | for (; driver_list; driver_list = driver_list->next) |
| 4262 | if (driver_list->on) |
| 4263 | { |
| 4264 | Lisp_Object val, tmp, cache = driver_list->driver->get_cache (f); |
| 4265 | |
| 4266 | val = XCDR (cache); |
| 4267 | while (! NILP (val) |
| 4268 | && ! EQ (XCAR (XCAR (val)), driver_list->driver->type)) |
| 4269 | val = XCDR (val); |
| 4270 | eassert (! NILP (val)); |
| 4271 | tmp = XCDR (XCAR (val)); |
| 4272 | if (XINT (XCAR (tmp)) == 0) |
| 4273 | { |
| 4274 | font_clear_cache (f, XCAR (val), driver_list->driver); |
| 4275 | XSETCDR (cache, XCDR (val)); |
| 4276 | } |
| 4277 | } |
| 4278 | } |
| 4279 | |
| 4280 | DEFUN ("clear-font-cache", Fclear_font_cache, Sclear_font_cache, 0, 0, 0, |
| 4281 | doc: /* Clear font cache of each frame. */) |
| 4282 | (void) |
| 4283 | { |
| 4284 | Lisp_Object list, frame; |
| 4285 | |
| 4286 | FOR_EACH_FRAME (list, frame) |
| 4287 | clear_font_cache (XFRAME (frame)); |
| 4288 | |
| 4289 | return Qnil; |
| 4290 | } |
| 4291 | |
| 4292 | \f |
| 4293 | void |
| 4294 | font_fill_lglyph_metrics (Lisp_Object glyph, Lisp_Object font_object) |
| 4295 | { |
| 4296 | struct font *font = XFONT_OBJECT (font_object); |
| 4297 | unsigned code = font->driver->encode_char (font, LGLYPH_CHAR (glyph)); |
| 4298 | struct font_metrics metrics; |
| 4299 | |
| 4300 | LGLYPH_SET_CODE (glyph, code); |
| 4301 | font->driver->text_extents (font, &code, 1, &metrics); |
| 4302 | LGLYPH_SET_LBEARING (glyph, metrics.lbearing); |
| 4303 | LGLYPH_SET_RBEARING (glyph, metrics.rbearing); |
| 4304 | LGLYPH_SET_WIDTH (glyph, metrics.width); |
| 4305 | LGLYPH_SET_ASCENT (glyph, metrics.ascent); |
| 4306 | LGLYPH_SET_DESCENT (glyph, metrics.descent); |
| 4307 | } |
| 4308 | |
| 4309 | |
| 4310 | DEFUN ("font-shape-gstring", Ffont_shape_gstring, Sfont_shape_gstring, 1, 1, 0, |
| 4311 | doc: /* Shape the glyph-string GSTRING. |
| 4312 | Shaping means substituting glyphs and/or adjusting positions of glyphs |
| 4313 | to get the correct visual image of character sequences set in the |
| 4314 | header of the glyph-string. |
| 4315 | |
| 4316 | If the shaping was successful, the value is GSTRING itself or a newly |
| 4317 | created glyph-string. Otherwise, the value is nil. |
| 4318 | |
| 4319 | See the documentation of `composition-get-gstring' for the format of |
| 4320 | GSTRING. */) |
| 4321 | (Lisp_Object gstring) |
| 4322 | { |
| 4323 | struct font *font; |
| 4324 | Lisp_Object font_object, n, glyph; |
| 4325 | ptrdiff_t i, from, to; |
| 4326 | |
| 4327 | if (! composition_gstring_p (gstring)) |
| 4328 | signal_error ("Invalid glyph-string: ", gstring); |
| 4329 | if (! NILP (LGSTRING_ID (gstring))) |
| 4330 | return gstring; |
| 4331 | font_object = LGSTRING_FONT (gstring); |
| 4332 | CHECK_FONT_OBJECT (font_object); |
| 4333 | font = XFONT_OBJECT (font_object); |
| 4334 | if (! font->driver->shape) |
| 4335 | return Qnil; |
| 4336 | |
| 4337 | /* Try at most three times with larger gstring each time. */ |
| 4338 | for (i = 0; i < 3; i++) |
| 4339 | { |
| 4340 | n = font->driver->shape (gstring); |
| 4341 | if (INTEGERP (n)) |
| 4342 | break; |
| 4343 | gstring = larger_vector (gstring, |
| 4344 | LGSTRING_GLYPH_LEN (gstring), -1); |
| 4345 | } |
| 4346 | if (i == 3 || XINT (n) == 0) |
| 4347 | return Qnil; |
| 4348 | if (XINT (n) < LGSTRING_GLYPH_LEN (gstring)) |
| 4349 | LGSTRING_SET_GLYPH (gstring, XINT (n), Qnil); |
| 4350 | |
| 4351 | /* Check FROM_IDX and TO_IDX of each GLYPH in GSTRING to assure that |
| 4352 | GLYPHS covers all characters (except for the last few ones) in |
| 4353 | GSTRING. More formally, provided that NCHARS is the number of |
| 4354 | characters in GSTRING and GLYPHS[i] is the ith glyph, FROM_IDX |
| 4355 | and TO_IDX of each glyph must satisfy these conditions: |
| 4356 | |
| 4357 | GLYPHS[0].FROM_IDX == 0 |
| 4358 | GLYPHS[i].FROM_IDX <= GLYPHS[i].TO_IDX |
| 4359 | if (GLYPHS[i].FROM_IDX == GLYPHS[i-1].FROM_IDX) |
| 4360 | ;; GLYPHS[i] and GLYPHS[i-1] belongs to the same grapheme cluster |
| 4361 | GLYPHS[i].TO_IDX == GLYPHS[i-1].TO_IDX |
| 4362 | else |
| 4363 | ;; Be sure to cover all characters. |
| 4364 | GLYPHS[i].FROM_IDX == GLYPHS[i-1].TO_IDX + 1 */ |
| 4365 | glyph = LGSTRING_GLYPH (gstring, 0); |
| 4366 | from = LGLYPH_FROM (glyph); |
| 4367 | to = LGLYPH_TO (glyph); |
| 4368 | if (from != 0 || to < from) |
| 4369 | goto shaper_error; |
| 4370 | for (i = 1; i < LGSTRING_GLYPH_LEN (gstring); i++) |
| 4371 | { |
| 4372 | glyph = LGSTRING_GLYPH (gstring, i); |
| 4373 | if (NILP (glyph)) |
| 4374 | break; |
| 4375 | if (! (LGLYPH_FROM (glyph) <= LGLYPH_TO (glyph) |
| 4376 | && (LGLYPH_FROM (glyph) == from |
| 4377 | ? LGLYPH_TO (glyph) == to |
| 4378 | : LGLYPH_FROM (glyph) == to + 1))) |
| 4379 | goto shaper_error; |
| 4380 | from = LGLYPH_FROM (glyph); |
| 4381 | to = LGLYPH_TO (glyph); |
| 4382 | } |
| 4383 | return composition_gstring_put_cache (gstring, XINT (n)); |
| 4384 | |
| 4385 | shaper_error: |
| 4386 | return Qnil; |
| 4387 | } |
| 4388 | |
| 4389 | DEFUN ("font-variation-glyphs", Ffont_variation_glyphs, Sfont_variation_glyphs, |
| 4390 | 2, 2, 0, |
| 4391 | doc: /* Return a list of variation glyphs for CHAR in FONT-OBJECT. |
| 4392 | Each element of the value is a cons (VARIATION-SELECTOR . GLYPH-ID), |
| 4393 | where |
| 4394 | VARIATION-SELECTOR is a character code of variation selection |
| 4395 | (#xFE00..#xFE0F or #xE0100..#xE01EF) |
| 4396 | GLYPH-ID is a glyph code of the corresponding variation glyph. */) |
| 4397 | (Lisp_Object font_object, Lisp_Object character) |
| 4398 | { |
| 4399 | unsigned variations[256]; |
| 4400 | struct font *font; |
| 4401 | int i, n; |
| 4402 | Lisp_Object val; |
| 4403 | |
| 4404 | CHECK_FONT_OBJECT (font_object); |
| 4405 | CHECK_CHARACTER (character); |
| 4406 | font = XFONT_OBJECT (font_object); |
| 4407 | if (! font->driver->get_variation_glyphs) |
| 4408 | return Qnil; |
| 4409 | n = font->driver->get_variation_glyphs (font, XINT (character), variations); |
| 4410 | if (! n) |
| 4411 | return Qnil; |
| 4412 | val = Qnil; |
| 4413 | for (i = 0; i < 255; i++) |
| 4414 | if (variations[i]) |
| 4415 | { |
| 4416 | int vs = (i < 16 ? 0xFE00 + i : 0xE0100 + (i - 16)); |
| 4417 | Lisp_Object code = INTEGER_TO_CONS (variations[i]); |
| 4418 | val = Fcons (Fcons (make_number (vs), code), val); |
| 4419 | } |
| 4420 | return val; |
| 4421 | } |
| 4422 | |
| 4423 | #if 0 |
| 4424 | |
| 4425 | DEFUN ("font-drive-otf", Ffont_drive_otf, Sfont_drive_otf, 6, 6, 0, |
| 4426 | doc: /* Apply OpenType features on glyph-string GSTRING-IN. |
| 4427 | OTF-FEATURES specifies which features to apply in this format: |
| 4428 | (SCRIPT LANGSYS GSUB GPOS) |
| 4429 | where |
| 4430 | SCRIPT is a symbol specifying a script tag of OpenType, |
| 4431 | LANGSYS is a symbol specifying a langsys tag of OpenType, |
| 4432 | GSUB and GPOS, if non-nil, are lists of symbols specifying feature tags. |
| 4433 | |
| 4434 | If LANGSYS is nil, the default langsys is selected. |
| 4435 | |
| 4436 | The features are applied in the order they appear in the list. The |
| 4437 | symbol `*' means to apply all available features not present in this |
| 4438 | list, and the remaining features are ignored. For instance, (vatu |
| 4439 | pstf * haln) is to apply vatu and pstf in this order, then to apply |
| 4440 | all available features other than vatu, pstf, and haln. |
| 4441 | |
| 4442 | The features are applied to the glyphs in the range FROM and TO of |
| 4443 | the glyph-string GSTRING-IN. |
| 4444 | |
| 4445 | If some feature is actually applicable, the resulting glyphs are |
| 4446 | produced in the glyph-string GSTRING-OUT from the index INDEX. In |
| 4447 | this case, the value is the number of produced glyphs. |
| 4448 | |
| 4449 | If no feature is applicable, no glyph is produced in GSTRING-OUT, and |
| 4450 | the value is 0. |
| 4451 | |
| 4452 | If GSTRING-OUT is too short to hold produced glyphs, no glyphs are |
| 4453 | produced in GSTRING-OUT, and the value is nil. |
| 4454 | |
| 4455 | See the documentation of `composition-get-gstring' for the format of |
| 4456 | glyph-string. */) |
| 4457 | (Lisp_Object otf_features, Lisp_Object gstring_in, Lisp_Object from, Lisp_Object to, Lisp_Object gstring_out, Lisp_Object index) |
| 4458 | { |
| 4459 | Lisp_Object font_object = LGSTRING_FONT (gstring_in); |
| 4460 | Lisp_Object val; |
| 4461 | struct font *font; |
| 4462 | int len, num; |
| 4463 | |
| 4464 | check_otf_features (otf_features); |
| 4465 | CHECK_FONT_OBJECT (font_object); |
| 4466 | font = XFONT_OBJECT (font_object); |
| 4467 | if (! font->driver->otf_drive) |
| 4468 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4469 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4470 | CHECK_CONS (otf_features); |
| 4471 | CHECK_SYMBOL (XCAR (otf_features)); |
| 4472 | val = XCDR (otf_features); |
| 4473 | CHECK_SYMBOL (XCAR (val)); |
| 4474 | val = XCDR (otf_features); |
| 4475 | if (! NILP (val)) |
| 4476 | CHECK_CONS (val); |
| 4477 | len = check_gstring (gstring_in); |
| 4478 | CHECK_VECTOR (gstring_out); |
| 4479 | CHECK_NATNUM (from); |
| 4480 | CHECK_NATNUM (to); |
| 4481 | CHECK_NATNUM (index); |
| 4482 | |
| 4483 | if (XINT (from) >= XINT (to) || XINT (to) > len) |
| 4484 | args_out_of_range_3 (from, to, make_number (len)); |
| 4485 | if (XINT (index) >= ASIZE (gstring_out)) |
| 4486 | args_out_of_range (index, make_number (ASIZE (gstring_out))); |
| 4487 | num = font->driver->otf_drive (font, otf_features, |
| 4488 | gstring_in, XINT (from), XINT (to), |
| 4489 | gstring_out, XINT (index), 0); |
| 4490 | if (num < 0) |
| 4491 | return Qnil; |
| 4492 | return make_number (num); |
| 4493 | } |
| 4494 | |
| 4495 | DEFUN ("font-otf-alternates", Ffont_otf_alternates, Sfont_otf_alternates, |
| 4496 | 3, 3, 0, |
| 4497 | doc: /* Return a list of alternate glyphs of CHARACTER in FONT-OBJECT. |
| 4498 | OTF-FEATURES specifies which features of the font FONT-OBJECT to apply |
| 4499 | in this format: |
| 4500 | (SCRIPT LANGSYS FEATURE ...) |
| 4501 | See the documentation of `font-drive-otf' for more detail. |
| 4502 | |
| 4503 | The value is a list of cons cells of the format (GLYPH-ID . CHARACTER), |
| 4504 | where GLYPH-ID is a glyph index of the font, and CHARACTER is a |
| 4505 | character code corresponding to the glyph or nil if there's no |
| 4506 | corresponding character. */) |
| 4507 | (Lisp_Object font_object, Lisp_Object character, Lisp_Object otf_features) |
| 4508 | { |
| 4509 | struct font *font; |
| 4510 | Lisp_Object gstring_in, gstring_out, g; |
| 4511 | Lisp_Object alternates; |
| 4512 | int i, num; |
| 4513 | |
| 4514 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4515 | if (! font->driver->otf_drive) |
| 4516 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4517 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4518 | CHECK_CHARACTER (character); |
| 4519 | CHECK_CONS (otf_features); |
| 4520 | |
| 4521 | gstring_in = Ffont_make_gstring (font_object, make_number (1)); |
| 4522 | g = LGSTRING_GLYPH (gstring_in, 0); |
| 4523 | LGLYPH_SET_CHAR (g, XINT (character)); |
| 4524 | gstring_out = Ffont_make_gstring (font_object, make_number (10)); |
| 4525 | while ((num = font->driver->otf_drive (font, otf_features, gstring_in, 0, 1, |
| 4526 | gstring_out, 0, 1)) < 0) |
| 4527 | gstring_out = Ffont_make_gstring (font_object, |
| 4528 | make_number (ASIZE (gstring_out) * 2)); |
| 4529 | alternates = Qnil; |
| 4530 | for (i = 0; i < num; i++) |
| 4531 | { |
| 4532 | Lisp_Object g = LGSTRING_GLYPH (gstring_out, i); |
| 4533 | int c = LGLYPH_CHAR (g); |
| 4534 | unsigned code = LGLYPH_CODE (g); |
| 4535 | |
| 4536 | alternates = Fcons (Fcons (make_number (code), |
| 4537 | c > 0 ? make_number (c) : Qnil), |
| 4538 | alternates); |
| 4539 | } |
| 4540 | return Fnreverse (alternates); |
| 4541 | } |
| 4542 | #endif /* 0 */ |
| 4543 | |
| 4544 | #ifdef FONT_DEBUG |
| 4545 | |
| 4546 | DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0, |
| 4547 | doc: /* Open FONT-ENTITY. */) |
| 4548 | (Lisp_Object font_entity, Lisp_Object size, Lisp_Object frame) |
| 4549 | { |
| 4550 | EMACS_INT isize; |
| 4551 | struct frame *f = decode_live_frame (frame); |
| 4552 | |
| 4553 | CHECK_FONT_ENTITY (font_entity); |
| 4554 | |
| 4555 | if (NILP (size)) |
| 4556 | isize = XINT (AREF (font_entity, FONT_SIZE_INDEX)); |
| 4557 | else |
| 4558 | { |
| 4559 | CHECK_NUMBER_OR_FLOAT (size); |
| 4560 | if (FLOATP (size)) |
| 4561 | isize = POINT_TO_PIXEL (XFLOAT_DATA (size), FRAME_RES_Y (f)); |
| 4562 | else |
| 4563 | isize = XINT (size); |
| 4564 | if (! (INT_MIN <= isize && isize <= INT_MAX)) |
| 4565 | args_out_of_range (font_entity, size); |
| 4566 | if (isize == 0) |
| 4567 | isize = 120; |
| 4568 | } |
| 4569 | return font_open_entity (f, font_entity, isize); |
| 4570 | } |
| 4571 | |
| 4572 | DEFUN ("close-font", Fclose_font, Sclose_font, 1, 2, 0, |
| 4573 | doc: /* Close FONT-OBJECT. */) |
| 4574 | (Lisp_Object font_object, Lisp_Object frame) |
| 4575 | { |
| 4576 | CHECK_FONT_OBJECT (font_object); |
| 4577 | font_close_object (decode_live_frame (frame), font_object); |
| 4578 | return Qnil; |
| 4579 | } |
| 4580 | |
| 4581 | DEFUN ("query-font", Fquery_font, Squery_font, 1, 1, 0, |
| 4582 | doc: /* Return information about FONT-OBJECT. |
| 4583 | The value is a vector: |
| 4584 | [ NAME FILENAME PIXEL-SIZE SIZE ASCENT DESCENT SPACE-WIDTH AVERAGE-WIDTH |
| 4585 | CAPABILITY ] |
| 4586 | |
| 4587 | NAME is the font name, a string (or nil if the font backend doesn't |
| 4588 | provide a name). |
| 4589 | |
| 4590 | FILENAME is the font file name, a string (or nil if the font backend |
| 4591 | doesn't provide a file name). |
| 4592 | |
| 4593 | PIXEL-SIZE is a pixel size by which the font is opened. |
| 4594 | |
| 4595 | SIZE is a maximum advance width of the font in pixels. |
| 4596 | |
| 4597 | ASCENT, DESCENT, SPACE-WIDTH, AVERAGE-WIDTH are metrics of the font in |
| 4598 | pixels. |
| 4599 | |
| 4600 | CAPABILITY is a list whose first element is a symbol representing the |
| 4601 | font format \(x, opentype, truetype, type1, pcf, or bdf) and the |
| 4602 | remaining elements describe the details of the font capability. |
| 4603 | |
| 4604 | If the font is OpenType font, the form of the list is |
| 4605 | \(opentype GSUB GPOS) |
| 4606 | where GSUB shows which "GSUB" features the font supports, and GPOS |
| 4607 | shows which "GPOS" features the font supports. Both GSUB and GPOS are |
| 4608 | lists of the format: |
| 4609 | \((SCRIPT (LANGSYS FEATURE ...) ...) ...) |
| 4610 | |
| 4611 | If the font is not OpenType font, currently the length of the form is |
| 4612 | one. |
| 4613 | |
| 4614 | SCRIPT is a symbol representing OpenType script tag. |
| 4615 | |
| 4616 | LANGSYS is a symbol representing OpenType langsys tag, or nil |
| 4617 | representing the default langsys. |
| 4618 | |
| 4619 | FEATURE is a symbol representing OpenType feature tag. |
| 4620 | |
| 4621 | If the font is not OpenType font, CAPABILITY is nil. */) |
| 4622 | (Lisp_Object font_object) |
| 4623 | { |
| 4624 | struct font *font; |
| 4625 | Lisp_Object val; |
| 4626 | |
| 4627 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4628 | |
| 4629 | val = make_uninit_vector (9); |
| 4630 | ASET (val, 0, AREF (font_object, FONT_NAME_INDEX)); |
| 4631 | ASET (val, 1, AREF (font_object, FONT_FILE_INDEX)); |
| 4632 | ASET (val, 2, make_number (font->pixel_size)); |
| 4633 | ASET (val, 3, make_number (font->max_width)); |
| 4634 | ASET (val, 4, make_number (font->ascent)); |
| 4635 | ASET (val, 5, make_number (font->descent)); |
| 4636 | ASET (val, 6, make_number (font->space_width)); |
| 4637 | ASET (val, 7, make_number (font->average_width)); |
| 4638 | if (font->driver->otf_capability) |
| 4639 | ASET (val, 8, Fcons (Qopentype, font->driver->otf_capability (font))); |
| 4640 | else |
| 4641 | ASET (val, 8, Qnil); |
| 4642 | return val; |
| 4643 | } |
| 4644 | |
| 4645 | DEFUN ("font-get-glyphs", Ffont_get_glyphs, Sfont_get_glyphs, 3, 4, 0, |
| 4646 | doc: |
| 4647 | /* Return a vector of FONT-OBJECT's glyphs for the specified characters. |
| 4648 | FROM and TO are positions (integers or markers) specifying a region |
| 4649 | of the current buffer. |
| 4650 | If the optional fourth arg OBJECT is not nil, it is a string or a |
| 4651 | vector containing the target characters. |
| 4652 | |
| 4653 | Each element is a vector containing information of a glyph in this format: |
| 4654 | [FROM-IDX TO-IDX C CODE WIDTH LBEARING RBEARING ASCENT DESCENT ADJUSTMENT] |
| 4655 | where |
| 4656 | FROM is an index numbers of a character the glyph corresponds to. |
| 4657 | TO is the same as FROM. |
| 4658 | C is the character of the glyph. |
| 4659 | CODE is the glyph-code of C in FONT-OBJECT. |
| 4660 | WIDTH thru DESCENT are the metrics (in pixels) of the glyph. |
| 4661 | ADJUSTMENT is always nil. |
| 4662 | If FONT-OBJECT doesn't have a glyph for a character, |
| 4663 | the corresponding element is nil. */) |
| 4664 | (Lisp_Object font_object, Lisp_Object from, Lisp_Object to, |
| 4665 | Lisp_Object object) |
| 4666 | { |
| 4667 | struct font *font; |
| 4668 | ptrdiff_t i, len; |
| 4669 | Lisp_Object *chars, vec; |
| 4670 | USE_SAFE_ALLOCA; |
| 4671 | |
| 4672 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4673 | if (NILP (object)) |
| 4674 | { |
| 4675 | ptrdiff_t charpos, bytepos; |
| 4676 | |
| 4677 | validate_region (&from, &to); |
| 4678 | if (EQ (from, to)) |
| 4679 | return Qnil; |
| 4680 | len = XFASTINT (to) - XFASTINT (from); |
| 4681 | SAFE_ALLOCA_LISP (chars, len); |
| 4682 | charpos = XFASTINT (from); |
| 4683 | bytepos = CHAR_TO_BYTE (charpos); |
| 4684 | for (i = 0; charpos < XFASTINT (to); i++) |
| 4685 | { |
| 4686 | int c; |
| 4687 | FETCH_CHAR_ADVANCE (c, charpos, bytepos); |
| 4688 | chars[i] = make_number (c); |
| 4689 | } |
| 4690 | } |
| 4691 | else if (STRINGP (object)) |
| 4692 | { |
| 4693 | const unsigned char *p; |
| 4694 | |
| 4695 | CHECK_NUMBER (from); |
| 4696 | CHECK_NUMBER (to); |
| 4697 | if (XINT (from) < 0 || XINT (from) > XINT (to) |
| 4698 | || XINT (to) > SCHARS (object)) |
| 4699 | args_out_of_range_3 (object, from, to); |
| 4700 | if (EQ (from, to)) |
| 4701 | return Qnil; |
| 4702 | len = XFASTINT (to) - XFASTINT (from); |
| 4703 | SAFE_ALLOCA_LISP (chars, len); |
| 4704 | p = SDATA (object); |
| 4705 | if (STRING_MULTIBYTE (object)) |
| 4706 | for (i = 0; i < len; i++) |
| 4707 | { |
| 4708 | int c = STRING_CHAR_ADVANCE (p); |
| 4709 | chars[i] = make_number (c); |
| 4710 | } |
| 4711 | else |
| 4712 | for (i = 0; i < len; i++) |
| 4713 | chars[i] = make_number (p[i]); |
| 4714 | } |
| 4715 | else |
| 4716 | { |
| 4717 | CHECK_VECTOR (object); |
| 4718 | CHECK_NUMBER (from); |
| 4719 | CHECK_NUMBER (to); |
| 4720 | if (XINT (from) < 0 || XINT (from) > XINT (to) |
| 4721 | || XINT (to) > ASIZE (object)) |
| 4722 | args_out_of_range_3 (object, from, to); |
| 4723 | if (EQ (from, to)) |
| 4724 | return Qnil; |
| 4725 | len = XFASTINT (to) - XFASTINT (from); |
| 4726 | for (i = 0; i < len; i++) |
| 4727 | { |
| 4728 | Lisp_Object elt = AREF (object, XFASTINT (from) + i); |
| 4729 | CHECK_CHARACTER (elt); |
| 4730 | } |
| 4731 | chars = aref_addr (object, XFASTINT (from)); |
| 4732 | } |
| 4733 | |
| 4734 | vec = make_uninit_vector (len); |
| 4735 | for (i = 0; i < len; i++) |
| 4736 | { |
| 4737 | Lisp_Object g; |
| 4738 | int c = XFASTINT (chars[i]); |
| 4739 | unsigned code; |
| 4740 | struct font_metrics metrics; |
| 4741 | |
| 4742 | code = font->driver->encode_char (font, c); |
| 4743 | if (code == FONT_INVALID_CODE) |
| 4744 | { |
| 4745 | ASET (vec, i, Qnil); |
| 4746 | continue; |
| 4747 | } |
| 4748 | g = LGLYPH_NEW (); |
| 4749 | LGLYPH_SET_FROM (g, i); |
| 4750 | LGLYPH_SET_TO (g, i); |
| 4751 | LGLYPH_SET_CHAR (g, c); |
| 4752 | LGLYPH_SET_CODE (g, code); |
| 4753 | font->driver->text_extents (font, &code, 1, &metrics); |
| 4754 | LGLYPH_SET_WIDTH (g, metrics.width); |
| 4755 | LGLYPH_SET_LBEARING (g, metrics.lbearing); |
| 4756 | LGLYPH_SET_RBEARING (g, metrics.rbearing); |
| 4757 | LGLYPH_SET_ASCENT (g, metrics.ascent); |
| 4758 | LGLYPH_SET_DESCENT (g, metrics.descent); |
| 4759 | ASET (vec, i, g); |
| 4760 | } |
| 4761 | if (! VECTORP (object)) |
| 4762 | SAFE_FREE (); |
| 4763 | return vec; |
| 4764 | } |
| 4765 | |
| 4766 | DEFUN ("font-match-p", Ffont_match_p, Sfont_match_p, 2, 2, 0, |
| 4767 | doc: /* Return t if and only if font-spec SPEC matches with FONT. |
| 4768 | FONT is a font-spec, font-entity, or font-object. */) |
| 4769 | (Lisp_Object spec, Lisp_Object font) |
| 4770 | { |
| 4771 | CHECK_FONT_SPEC (spec); |
| 4772 | CHECK_FONT (font); |
| 4773 | |
| 4774 | return (font_match_p (spec, font) ? Qt : Qnil); |
| 4775 | } |
| 4776 | |
| 4777 | DEFUN ("font-at", Ffont_at, Sfont_at, 1, 3, 0, |
| 4778 | doc: /* Return a font-object for displaying a character at POSITION. |
| 4779 | Optional second arg WINDOW, if non-nil, is a window displaying |
| 4780 | the current buffer. It defaults to the currently selected window. |
| 4781 | Optional third arg STRING, if non-nil, is a string containing the target |
| 4782 | character at index specified by POSITION. */) |
| 4783 | (Lisp_Object position, Lisp_Object window, Lisp_Object string) |
| 4784 | { |
| 4785 | struct window *w = decode_live_window (window); |
| 4786 | |
| 4787 | if (NILP (string)) |
| 4788 | { |
| 4789 | if (XBUFFER (w->contents) != current_buffer) |
| 4790 | error ("Specified window is not displaying the current buffer"); |
| 4791 | CHECK_NUMBER_COERCE_MARKER (position); |
| 4792 | if (! (BEGV <= XINT (position) && XINT (position) < ZV)) |
| 4793 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 4794 | } |
| 4795 | else |
| 4796 | { |
| 4797 | CHECK_NUMBER (position); |
| 4798 | CHECK_STRING (string); |
| 4799 | if (! (0 <= XINT (position) && XINT (position) < SCHARS (string))) |
| 4800 | args_out_of_range (string, position); |
| 4801 | } |
| 4802 | |
| 4803 | return font_at (-1, XINT (position), NULL, w, string); |
| 4804 | } |
| 4805 | |
| 4806 | #if 0 |
| 4807 | DEFUN ("draw-string", Fdraw_string, Sdraw_string, 2, 2, 0, |
| 4808 | doc: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame. |
| 4809 | The value is a number of glyphs drawn. |
| 4810 | Type C-l to recover what previously shown. */) |
| 4811 | (Lisp_Object font_object, Lisp_Object string) |
| 4812 | { |
| 4813 | Lisp_Object frame = selected_frame; |
| 4814 | struct frame *f = XFRAME (frame); |
| 4815 | struct font *font; |
| 4816 | struct face *face; |
| 4817 | int i, len, width; |
| 4818 | unsigned *code; |
| 4819 | |
| 4820 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4821 | CHECK_STRING (string); |
| 4822 | len = SCHARS (string); |
| 4823 | code = alloca (sizeof (unsigned) * len); |
| 4824 | for (i = 0; i < len; i++) |
| 4825 | { |
| 4826 | Lisp_Object ch = Faref (string, make_number (i)); |
| 4827 | Lisp_Object val; |
| 4828 | int c = XINT (ch); |
| 4829 | |
| 4830 | code[i] = font->driver->encode_char (font, c); |
| 4831 | if (code[i] == FONT_INVALID_CODE) |
| 4832 | break; |
| 4833 | } |
| 4834 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4835 | face->fontp = font; |
| 4836 | if (font->driver->prepare_face) |
| 4837 | font->driver->prepare_face (f, face); |
| 4838 | width = font->driver->text_extents (font, code, i, NULL); |
| 4839 | len = font->driver->draw_text (f, face, 0, font->ascent, code, i, width); |
| 4840 | if (font->driver->done_face) |
| 4841 | font->driver->done_face (f, face); |
| 4842 | face->fontp = NULL; |
| 4843 | return make_number (len); |
| 4844 | } |
| 4845 | #endif |
| 4846 | |
| 4847 | DEFUN ("frame-font-cache", Fframe_font_cache, Sframe_font_cache, 0, 1, 0, |
| 4848 | doc: /* Return FRAME's font cache. Mainly used for debugging. |
| 4849 | If FRAME is omitted or nil, use the selected frame. */) |
| 4850 | (Lisp_Object frame) |
| 4851 | { |
| 4852 | #ifdef HAVE_WINDOW_SYSTEM |
| 4853 | struct frame *f = decode_live_frame (frame); |
| 4854 | |
| 4855 | if (FRAME_WINDOW_P (f)) |
| 4856 | return FRAME_DISPLAY_INFO (f)->name_list_element; |
| 4857 | else |
| 4858 | #endif |
| 4859 | return Qnil; |
| 4860 | } |
| 4861 | |
| 4862 | #endif /* FONT_DEBUG */ |
| 4863 | |
| 4864 | #ifdef HAVE_WINDOW_SYSTEM |
| 4865 | |
| 4866 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, |
| 4867 | doc: /* Return information about a font named NAME on frame FRAME. |
| 4868 | If FRAME is omitted or nil, use the selected frame. |
| 4869 | The returned value is a vector of OPENED-NAME, FULL-NAME, SIZE, |
| 4870 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT, |
| 4871 | where |
| 4872 | OPENED-NAME is the name used for opening the font, |
| 4873 | FULL-NAME is the full name of the font, |
| 4874 | SIZE is the pixelsize of the font, |
| 4875 | HEIGHT is the pixel-height of the font (i.e., ascent + descent), |
| 4876 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline, |
| 4877 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling |
| 4878 | how to compose characters. |
| 4879 | If the named font is not yet loaded, return nil. */) |
| 4880 | (Lisp_Object name, Lisp_Object frame) |
| 4881 | { |
| 4882 | struct frame *f; |
| 4883 | struct font *font; |
| 4884 | Lisp_Object info; |
| 4885 | Lisp_Object font_object; |
| 4886 | |
| 4887 | if (! FONTP (name)) |
| 4888 | CHECK_STRING (name); |
| 4889 | f = decode_window_system_frame (frame); |
| 4890 | |
| 4891 | if (STRINGP (name)) |
| 4892 | { |
| 4893 | int fontset = fs_query_fontset (name, 0); |
| 4894 | |
| 4895 | if (fontset >= 0) |
| 4896 | name = fontset_ascii (fontset); |
| 4897 | font_object = font_open_by_name (f, name); |
| 4898 | } |
| 4899 | else if (FONT_OBJECT_P (name)) |
| 4900 | font_object = name; |
| 4901 | else if (FONT_ENTITY_P (name)) |
| 4902 | font_object = font_open_entity (f, name, 0); |
| 4903 | else |
| 4904 | { |
| 4905 | struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4906 | Lisp_Object entity = font_matching_entity (f, face->lface, name); |
| 4907 | |
| 4908 | font_object = ! NILP (entity) ? font_open_entity (f, entity, 0) : Qnil; |
| 4909 | } |
| 4910 | if (NILP (font_object)) |
| 4911 | return Qnil; |
| 4912 | font = XFONT_OBJECT (font_object); |
| 4913 | |
| 4914 | info = make_uninit_vector (7); |
| 4915 | ASET (info, 0, AREF (font_object, FONT_NAME_INDEX)); |
| 4916 | ASET (info, 1, AREF (font_object, FONT_FULLNAME_INDEX)); |
| 4917 | ASET (info, 2, make_number (font->pixel_size)); |
| 4918 | ASET (info, 3, make_number (font->height)); |
| 4919 | ASET (info, 4, make_number (font->baseline_offset)); |
| 4920 | ASET (info, 5, make_number (font->relative_compose)); |
| 4921 | ASET (info, 6, make_number (font->default_ascent)); |
| 4922 | |
| 4923 | #if 0 |
| 4924 | /* As font_object is still in FONT_OBJLIST of the entity, we can't |
| 4925 | close it now. Perhaps, we should manage font-objects |
| 4926 | by `reference-count'. */ |
| 4927 | font_close_object (f, font_object); |
| 4928 | #endif |
| 4929 | return info; |
| 4930 | } |
| 4931 | #endif |
| 4932 | |
| 4933 | \f |
| 4934 | #define BUILD_STYLE_TABLE(TBL) build_style_table (TBL, ARRAYELTS (TBL)) |
| 4935 | |
| 4936 | static Lisp_Object |
| 4937 | build_style_table (const struct table_entry *entry, int nelement) |
| 4938 | { |
| 4939 | int i, j; |
| 4940 | Lisp_Object table, elt; |
| 4941 | |
| 4942 | table = make_uninit_vector (nelement); |
| 4943 | for (i = 0; i < nelement; i++) |
| 4944 | { |
| 4945 | for (j = 0; entry[i].names[j]; j++); |
| 4946 | elt = Fmake_vector (make_number (j + 1), Qnil); |
| 4947 | ASET (elt, 0, make_number (entry[i].numeric)); |
| 4948 | for (j = 0; entry[i].names[j]; j++) |
| 4949 | ASET (elt, j + 1, intern_c_string (entry[i].names[j])); |
| 4950 | ASET (table, i, elt); |
| 4951 | } |
| 4952 | return table; |
| 4953 | } |
| 4954 | |
| 4955 | /* The deferred font-log data of the form [ACTION ARG RESULT]. |
| 4956 | If ACTION is not nil, that is added to the log when font_add_log is |
| 4957 | called next time. At that time, ACTION is set back to nil. */ |
| 4958 | static Lisp_Object Vfont_log_deferred; |
| 4959 | |
| 4960 | /* Prepend the font-related logging data in Vfont_log if it is not |
| 4961 | `t'. ACTION describes a kind of font-related action (e.g. listing, |
| 4962 | opening), ARG is the argument for the action, and RESULT is the |
| 4963 | result of the action. */ |
| 4964 | void |
| 4965 | font_add_log (const char *action, Lisp_Object arg, Lisp_Object result) |
| 4966 | { |
| 4967 | Lisp_Object val; |
| 4968 | int i; |
| 4969 | |
| 4970 | if (EQ (Vfont_log, Qt)) |
| 4971 | return; |
| 4972 | if (STRINGP (AREF (Vfont_log_deferred, 0))) |
| 4973 | { |
| 4974 | char *str = SSDATA (AREF (Vfont_log_deferred, 0)); |
| 4975 | |
| 4976 | ASET (Vfont_log_deferred, 0, Qnil); |
| 4977 | font_add_log (str, AREF (Vfont_log_deferred, 1), |
| 4978 | AREF (Vfont_log_deferred, 2)); |
| 4979 | } |
| 4980 | |
| 4981 | if (FONTP (arg)) |
| 4982 | { |
| 4983 | Lisp_Object tail, elt; |
| 4984 | Lisp_Object equalstr = build_string ("="); |
| 4985 | |
| 4986 | val = Ffont_xlfd_name (arg, Qt); |
| 4987 | for (tail = AREF (arg, FONT_EXTRA_INDEX); CONSP (tail); |
| 4988 | tail = XCDR (tail)) |
| 4989 | { |
| 4990 | elt = XCAR (tail); |
| 4991 | if (EQ (XCAR (elt), QCscript) |
| 4992 | && SYMBOLP (XCDR (elt))) |
| 4993 | val = concat3 (val, SYMBOL_NAME (QCscript), |
| 4994 | concat2 (equalstr, SYMBOL_NAME (XCDR (elt)))); |
| 4995 | else if (EQ (XCAR (elt), QClang) |
| 4996 | && SYMBOLP (XCDR (elt))) |
| 4997 | val = concat3 (val, SYMBOL_NAME (QClang), |
| 4998 | concat2 (equalstr, SYMBOL_NAME (XCDR (elt)))); |
| 4999 | else if (EQ (XCAR (elt), QCotf) |
| 5000 | && CONSP (XCDR (elt)) && SYMBOLP (XCAR (XCDR (elt)))) |
| 5001 | val = concat3 (val, SYMBOL_NAME (QCotf), |
| 5002 | concat2 (equalstr, |
| 5003 | SYMBOL_NAME (XCAR (XCDR (elt))))); |
| 5004 | } |
| 5005 | arg = val; |
| 5006 | } |
| 5007 | |
| 5008 | if (CONSP (result) |
| 5009 | && VECTORP (XCAR (result)) |
| 5010 | && ASIZE (XCAR (result)) > 0 |
| 5011 | && FONTP (AREF (XCAR (result), 0))) |
| 5012 | result = font_vconcat_entity_vectors (result); |
| 5013 | if (FONTP (result)) |
| 5014 | { |
| 5015 | val = Ffont_xlfd_name (result, Qt); |
| 5016 | if (! FONT_SPEC_P (result)) |
| 5017 | val = concat3 (SYMBOL_NAME (AREF (result, FONT_TYPE_INDEX)), |
| 5018 | build_string (":"), val); |
| 5019 | result = val; |
| 5020 | } |
| 5021 | else if (CONSP (result)) |
| 5022 | { |
| 5023 | Lisp_Object tail; |
| 5024 | result = Fcopy_sequence (result); |
| 5025 | for (tail = result; CONSP (tail); tail = XCDR (tail)) |
| 5026 | { |
| 5027 | val = XCAR (tail); |
| 5028 | if (FONTP (val)) |
| 5029 | val = Ffont_xlfd_name (val, Qt); |
| 5030 | XSETCAR (tail, val); |
| 5031 | } |
| 5032 | } |
| 5033 | else if (VECTORP (result)) |
| 5034 | { |
| 5035 | result = Fcopy_sequence (result); |
| 5036 | for (i = 0; i < ASIZE (result); i++) |
| 5037 | { |
| 5038 | val = AREF (result, i); |
| 5039 | if (FONTP (val)) |
| 5040 | val = Ffont_xlfd_name (val, Qt); |
| 5041 | ASET (result, i, val); |
| 5042 | } |
| 5043 | } |
| 5044 | Vfont_log = Fcons (list3 (intern (action), arg, result), Vfont_log); |
| 5045 | } |
| 5046 | |
| 5047 | /* Record a font-related logging data to be added to Vfont_log when |
| 5048 | font_add_log is called next time. ACTION, ARG, RESULT are the same |
| 5049 | as font_add_log. */ |
| 5050 | |
| 5051 | void |
| 5052 | font_deferred_log (const char *action, Lisp_Object arg, Lisp_Object result) |
| 5053 | { |
| 5054 | if (EQ (Vfont_log, Qt)) |
| 5055 | return; |
| 5056 | ASET (Vfont_log_deferred, 0, build_string (action)); |
| 5057 | ASET (Vfont_log_deferred, 1, arg); |
| 5058 | ASET (Vfont_log_deferred, 2, result); |
| 5059 | } |
| 5060 | |
| 5061 | void |
| 5062 | syms_of_font (void) |
| 5063 | { |
| 5064 | #include "font.x" |
| 5065 | |
| 5066 | sort_shift_bits[FONT_TYPE_INDEX] = 0; |
| 5067 | sort_shift_bits[FONT_SLANT_INDEX] = 2; |
| 5068 | sort_shift_bits[FONT_WEIGHT_INDEX] = 9; |
| 5069 | sort_shift_bits[FONT_SIZE_INDEX] = 16; |
| 5070 | sort_shift_bits[FONT_WIDTH_INDEX] = 23; |
| 5071 | /* Note that the other elements in sort_shift_bits are not used. */ |
| 5072 | |
| 5073 | staticpro (&font_charset_alist); |
| 5074 | font_charset_alist = Qnil; |
| 5075 | |
| 5076 | DEFSYM (Qopentype, "opentype"); |
| 5077 | |
| 5078 | DEFSYM (Qascii_0, "ascii-0"); |
| 5079 | DEFSYM (Qiso8859_1, "iso8859-1"); |
| 5080 | DEFSYM (Qiso10646_1, "iso10646-1"); |
| 5081 | DEFSYM (Qunicode_bmp, "unicode-bmp"); |
| 5082 | DEFSYM (Qunicode_sip, "unicode-sip"); |
| 5083 | |
| 5084 | DEFSYM (QCf, "Cf"); |
| 5085 | |
| 5086 | DEFSYM (QCotf, ":otf"); |
| 5087 | DEFSYM (QClang, ":lang"); |
| 5088 | DEFSYM (QCscript, ":script"); |
| 5089 | DEFSYM (QCantialias, ":antialias"); |
| 5090 | |
| 5091 | DEFSYM (QCfoundry, ":foundry"); |
| 5092 | DEFSYM (QCadstyle, ":adstyle"); |
| 5093 | DEFSYM (QCregistry, ":registry"); |
| 5094 | DEFSYM (QCspacing, ":spacing"); |
| 5095 | DEFSYM (QCdpi, ":dpi"); |
| 5096 | DEFSYM (QCscalable, ":scalable"); |
| 5097 | DEFSYM (QCavgwidth, ":avgwidth"); |
| 5098 | DEFSYM (QCfont_entity, ":font-entity"); |
| 5099 | DEFSYM (QCfc_unknown_spec, ":fc-unknown-spec"); |
| 5100 | |
| 5101 | DEFSYM (Qc, "c"); |
| 5102 | DEFSYM (Qm, "m"); |
| 5103 | DEFSYM (Qp, "p"); |
| 5104 | DEFSYM (Qd, "d"); |
| 5105 | |
| 5106 | DEFSYM (Qja, "ja"); |
| 5107 | DEFSYM (Qko, "ko"); |
| 5108 | |
| 5109 | DEFSYM (QCuser_spec, "user-spec"); |
| 5110 | |
| 5111 | staticpro (&scratch_font_spec); |
| 5112 | scratch_font_spec = Ffont_spec (0, NULL); |
| 5113 | staticpro (&scratch_font_prefer); |
| 5114 | scratch_font_prefer = Ffont_spec (0, NULL); |
| 5115 | |
| 5116 | staticpro (&Vfont_log_deferred); |
| 5117 | Vfont_log_deferred = Fmake_vector (make_number (3), Qnil); |
| 5118 | |
| 5119 | #if 0 |
| 5120 | #ifdef HAVE_LIBOTF |
| 5121 | staticpro (&otf_list); |
| 5122 | otf_list = Qnil; |
| 5123 | #endif /* HAVE_LIBOTF */ |
| 5124 | #endif /* 0 */ |
| 5125 | |
| 5126 | DEFVAR_LISP ("font-encoding-alist", Vfont_encoding_alist, |
| 5127 | doc: /* |
| 5128 | Alist of fontname patterns vs the corresponding encoding and repertory info. |
| 5129 | Each element looks like (REGEXP . (ENCODING . REPERTORY)), |
| 5130 | where ENCODING is a charset or a char-table, |
| 5131 | and REPERTORY is a charset, a char-table, or nil. |
| 5132 | |
| 5133 | If ENCODING and REPERTORY are the same, the element can have the form |
| 5134 | \(REGEXP . ENCODING). |
| 5135 | |
| 5136 | ENCODING is for converting a character to a glyph code of the font. |
| 5137 | If ENCODING is a charset, encoding a character by the charset gives |
| 5138 | the corresponding glyph code. If ENCODING is a char-table, looking up |
| 5139 | the table by a character gives the corresponding glyph code. |
| 5140 | |
| 5141 | REPERTORY specifies a repertory of characters supported by the font. |
| 5142 | If REPERTORY is a charset, all characters belonging to the charset are |
| 5143 | supported. If REPERTORY is a char-table, all characters who have a |
| 5144 | non-nil value in the table are supported. If REPERTORY is nil, Emacs |
| 5145 | gets the repertory information by an opened font and ENCODING. */); |
| 5146 | Vfont_encoding_alist = Qnil; |
| 5147 | |
| 5148 | /* FIXME: These 3 vars are not quite what they appear: setq on them |
| 5149 | won't have any effect other than disconnect them from the style |
| 5150 | table used by the font display code. So we make them read-only, |
| 5151 | to avoid this confusing situation. */ |
| 5152 | |
| 5153 | DEFVAR_LISP_NOPRO ("font-weight-table", Vfont_weight_table, |
| 5154 | doc: /* Vector of valid font weight values. |
| 5155 | Each element has the form: |
| 5156 | [NUMERIC-VALUE SYMBOLIC-NAME ALIAS-NAME ...] |
| 5157 | NUMERIC-VALUE is an integer, and SYMBOLIC-NAME and ALIAS-NAME are symbols. */); |
| 5158 | Vfont_weight_table = BUILD_STYLE_TABLE (weight_table); |
| 5159 | XSYMBOL (intern_c_string ("font-weight-table"))->constant = 1; |
| 5160 | |
| 5161 | DEFVAR_LISP_NOPRO ("font-slant-table", Vfont_slant_table, |
| 5162 | doc: /* Vector of font slant symbols vs the corresponding numeric values. |
| 5163 | See `font-weight-table' for the format of the vector. */); |
| 5164 | Vfont_slant_table = BUILD_STYLE_TABLE (slant_table); |
| 5165 | XSYMBOL (intern_c_string ("font-slant-table"))->constant = 1; |
| 5166 | |
| 5167 | DEFVAR_LISP_NOPRO ("font-width-table", Vfont_width_table, |
| 5168 | doc: /* Alist of font width symbols vs the corresponding numeric values. |
| 5169 | See `font-weight-table' for the format of the vector. */); |
| 5170 | Vfont_width_table = BUILD_STYLE_TABLE (width_table); |
| 5171 | XSYMBOL (intern_c_string ("font-width-table"))->constant = 1; |
| 5172 | |
| 5173 | staticpro (&font_style_table); |
| 5174 | font_style_table = make_uninit_vector (3); |
| 5175 | ASET (font_style_table, 0, Vfont_weight_table); |
| 5176 | ASET (font_style_table, 1, Vfont_slant_table); |
| 5177 | ASET (font_style_table, 2, Vfont_width_table); |
| 5178 | |
| 5179 | DEFVAR_LISP ("font-log", Vfont_log, doc: /* |
| 5180 | *Logging list of font related actions and results. |
| 5181 | The value t means to suppress the logging. |
| 5182 | The initial value is set to nil if the environment variable |
| 5183 | EMACS_FONT_LOG is set. Otherwise, it is set to t. */); |
| 5184 | Vfont_log = Qnil; |
| 5185 | |
| 5186 | #ifdef HAVE_WINDOW_SYSTEM |
| 5187 | #ifdef HAVE_FREETYPE |
| 5188 | syms_of_ftfont (); |
| 5189 | #ifdef HAVE_X_WINDOWS |
| 5190 | syms_of_xfont (); |
| 5191 | syms_of_ftxfont (); |
| 5192 | #ifdef HAVE_XFT |
| 5193 | syms_of_xftfont (); |
| 5194 | #endif /* HAVE_XFT */ |
| 5195 | #endif /* HAVE_X_WINDOWS */ |
| 5196 | #else /* not HAVE_FREETYPE */ |
| 5197 | #ifdef HAVE_X_WINDOWS |
| 5198 | syms_of_xfont (); |
| 5199 | #endif /* HAVE_X_WINDOWS */ |
| 5200 | #endif /* not HAVE_FREETYPE */ |
| 5201 | #ifdef HAVE_BDFFONT |
| 5202 | syms_of_bdffont (); |
| 5203 | #endif /* HAVE_BDFFONT */ |
| 5204 | #ifdef HAVE_NTGUI |
| 5205 | syms_of_w32font (); |
| 5206 | #endif /* HAVE_NTGUI */ |
| 5207 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5208 | } |
| 5209 | |
| 5210 | void |
| 5211 | init_font (void) |
| 5212 | { |
| 5213 | Vfont_log = egetenv ("EMACS_FONT_LOG") ? Qnil : Qt; |
| 5214 | } |