| 1 | /* font.c -- "Font" primitives. |
| 2 | |
| 3 | Copyright (C) 2006-2011 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 | #include <ctype.h> |
| 27 | #include <setjmp.h> |
| 28 | |
| 29 | #include "lisp.h" |
| 30 | #include "buffer.h" |
| 31 | #include "frame.h" |
| 32 | #include "window.h" |
| 33 | #include "dispextern.h" |
| 34 | #include "charset.h" |
| 35 | #include "character.h" |
| 36 | #include "composite.h" |
| 37 | #include "fontset.h" |
| 38 | #include "font.h" |
| 39 | |
| 40 | #ifdef HAVE_X_WINDOWS |
| 41 | #include "xterm.h" |
| 42 | #endif /* HAVE_X_WINDOWS */ |
| 43 | |
| 44 | #ifdef HAVE_NTGUI |
| 45 | #include "w32term.h" |
| 46 | #endif /* HAVE_NTGUI */ |
| 47 | |
| 48 | #ifdef HAVE_NS |
| 49 | #include "nsterm.h" |
| 50 | #endif /* HAVE_NS */ |
| 51 | |
| 52 | Lisp_Object Qopentype; |
| 53 | |
| 54 | /* Important character set strings. */ |
| 55 | Lisp_Object Qascii_0, Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip; |
| 56 | |
| 57 | #define DEFAULT_ENCODING Qiso8859_1 |
| 58 | |
| 59 | /* Unicode category `Cf'. */ |
| 60 | static Lisp_Object QCf; |
| 61 | |
| 62 | /* Special vector of zero length. This is repeatedly used by (struct |
| 63 | font_driver *)->list when a specified font is not found. */ |
| 64 | static Lisp_Object null_vector; |
| 65 | |
| 66 | /* Vector of Vfont_weight_table, Vfont_slant_table, and Vfont_width_table. */ |
| 67 | static Lisp_Object font_style_table; |
| 68 | |
| 69 | /* Structure used for tables mapping weight, slant, and width numeric |
| 70 | values and their names. */ |
| 71 | |
| 72 | struct table_entry |
| 73 | { |
| 74 | int numeric; |
| 75 | /* The first one is a valid name as a face attribute. |
| 76 | The second one (if any) is a typical name in XLFD field. */ |
| 77 | const char *names[5]; |
| 78 | }; |
| 79 | |
| 80 | /* Table of weight numeric values and their names. This table must be |
| 81 | sorted by numeric values in ascending order. */ |
| 82 | |
| 83 | static const struct table_entry weight_table[] = |
| 84 | { |
| 85 | { 0, { "thin" }}, |
| 86 | { 20, { "ultra-light", "ultralight" }}, |
| 87 | { 40, { "extra-light", "extralight" }}, |
| 88 | { 50, { "light" }}, |
| 89 | { 75, { "semi-light", "semilight", "demilight", "book" }}, |
| 90 | { 100, { "normal", "medium", "regular", "unspecified" }}, |
| 91 | { 180, { "semi-bold", "semibold", "demibold", "demi" }}, |
| 92 | { 200, { "bold" }}, |
| 93 | { 205, { "extra-bold", "extrabold" }}, |
| 94 | { 210, { "ultra-bold", "ultrabold", "black" }} |
| 95 | }; |
| 96 | |
| 97 | /* Table of slant numeric values and their names. This table must be |
| 98 | sorted by numeric values in ascending order. */ |
| 99 | |
| 100 | static const struct table_entry slant_table[] = |
| 101 | { |
| 102 | { 0, { "reverse-oblique", "ro" }}, |
| 103 | { 10, { "reverse-italic", "ri" }}, |
| 104 | { 100, { "normal", "r", "unspecified" }}, |
| 105 | { 200, { "italic" ,"i", "ot" }}, |
| 106 | { 210, { "oblique", "o" }} |
| 107 | }; |
| 108 | |
| 109 | /* Table of width numeric values and their names. This table must be |
| 110 | sorted by numeric values in ascending order. */ |
| 111 | |
| 112 | static const struct table_entry width_table[] = |
| 113 | { |
| 114 | { 50, { "ultra-condensed", "ultracondensed" }}, |
| 115 | { 63, { "extra-condensed", "extracondensed" }}, |
| 116 | { 75, { "condensed", "compressed", "narrow" }}, |
| 117 | { 87, { "semi-condensed", "semicondensed", "demicondensed" }}, |
| 118 | { 100, { "normal", "medium", "regular", "unspecified" }}, |
| 119 | { 113, { "semi-expanded", "semiexpanded", "demiexpanded" }}, |
| 120 | { 125, { "expanded" }}, |
| 121 | { 150, { "extra-expanded", "extraexpanded" }}, |
| 122 | { 200, { "ultra-expanded", "ultraexpanded", "wide" }} |
| 123 | }; |
| 124 | |
| 125 | Lisp_Object QCfoundry; |
| 126 | static Lisp_Object QCadstyle, QCregistry; |
| 127 | /* Symbols representing keys of font extra info. */ |
| 128 | Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript, QCavgwidth; |
| 129 | Lisp_Object QCantialias, QCfont_entity; |
| 130 | static Lisp_Object QCfc_unknown_spec; |
| 131 | /* Symbols representing values of font spacing property. */ |
| 132 | static Lisp_Object Qc, Qm, Qd; |
| 133 | Lisp_Object Qp; |
| 134 | /* Special ADSTYLE properties to avoid fonts used for Latin |
| 135 | characters; used in xfont.c and ftfont.c. */ |
| 136 | Lisp_Object Qja, Qko; |
| 137 | |
| 138 | static Lisp_Object QCuser_spec; |
| 139 | |
| 140 | /* Alist of font registry symbols and the corresponding charset |
| 141 | information. The information is retrieved from |
| 142 | Vfont_encoding_alist on demand. |
| 143 | |
| 144 | Eash element has the form: |
| 145 | (REGISTRY . (ENCODING-CHARSET-ID . REPERTORY-CHARSET-ID)) |
| 146 | or |
| 147 | (REGISTRY . nil) |
| 148 | |
| 149 | In the former form, ENCODING-CHARSET-ID is an ID of a charset that |
| 150 | encodes a character code to a glyph code of a font, and |
| 151 | REPERTORY-CHARSET-ID is an ID of a charset that tells if a |
| 152 | character is supported by a font. |
| 153 | |
| 154 | The latter form means that the information for REGISTRY couldn't be |
| 155 | retrieved. */ |
| 156 | static Lisp_Object font_charset_alist; |
| 157 | |
| 158 | /* List of all font drivers. Each font-backend (XXXfont.c) calls |
| 159 | register_font_driver in syms_of_XXXfont to register its font-driver |
| 160 | here. */ |
| 161 | static struct font_driver_list *font_driver_list; |
| 162 | |
| 163 | \f |
| 164 | |
| 165 | /* Creaters of font-related Lisp object. */ |
| 166 | |
| 167 | static Lisp_Object |
| 168 | font_make_spec (void) |
| 169 | { |
| 170 | Lisp_Object font_spec; |
| 171 | struct font_spec *spec |
| 172 | = ((struct font_spec *) |
| 173 | allocate_pseudovector (VECSIZE (struct font_spec), |
| 174 | FONT_SPEC_MAX, PVEC_FONT)); |
| 175 | XSETFONT (font_spec, spec); |
| 176 | return font_spec; |
| 177 | } |
| 178 | |
| 179 | Lisp_Object |
| 180 | font_make_entity (void) |
| 181 | { |
| 182 | Lisp_Object font_entity; |
| 183 | struct font_entity *entity |
| 184 | = ((struct font_entity *) |
| 185 | allocate_pseudovector (VECSIZE (struct font_entity), |
| 186 | FONT_ENTITY_MAX, PVEC_FONT)); |
| 187 | XSETFONT (font_entity, entity); |
| 188 | return font_entity; |
| 189 | } |
| 190 | |
| 191 | /* Create a font-object whose structure size is SIZE. If ENTITY is |
| 192 | not nil, copy properties from ENTITY to the font-object. If |
| 193 | PIXELSIZE is positive, set the `size' property to PIXELSIZE. */ |
| 194 | Lisp_Object |
| 195 | font_make_object (int size, Lisp_Object entity, int pixelsize) |
| 196 | { |
| 197 | Lisp_Object font_object; |
| 198 | struct font *font |
| 199 | = (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT); |
| 200 | int i; |
| 201 | |
| 202 | XSETFONT (font_object, font); |
| 203 | |
| 204 | if (! NILP (entity)) |
| 205 | { |
| 206 | for (i = 1; i < FONT_SPEC_MAX; i++) |
| 207 | font->props[i] = AREF (entity, i); |
| 208 | if (! NILP (AREF (entity, FONT_EXTRA_INDEX))) |
| 209 | font->props[FONT_EXTRA_INDEX] |
| 210 | = Fcopy_alist (AREF (entity, FONT_EXTRA_INDEX)); |
| 211 | } |
| 212 | if (size > 0) |
| 213 | font->props[FONT_SIZE_INDEX] = make_number (pixelsize); |
| 214 | return font_object; |
| 215 | } |
| 216 | |
| 217 | \f |
| 218 | |
| 219 | static int font_pixel_size (FRAME_PTR f, Lisp_Object); |
| 220 | static Lisp_Object font_open_entity (FRAME_PTR, Lisp_Object, int); |
| 221 | static Lisp_Object font_matching_entity (FRAME_PTR, Lisp_Object *, |
| 222 | Lisp_Object); |
| 223 | static unsigned font_encode_char (Lisp_Object, int); |
| 224 | |
| 225 | /* Number of registered font drivers. */ |
| 226 | static int num_font_drivers; |
| 227 | |
| 228 | |
| 229 | /* Return a Lispy value of a font property value at STR and LEN bytes. |
| 230 | If STR is "*", return nil. |
| 231 | If FORCE_SYMBOL is zero and all characters in STR are digits, |
| 232 | return an integer. Otherwise, return a symbol interned from |
| 233 | STR. */ |
| 234 | |
| 235 | Lisp_Object |
| 236 | font_intern_prop (const char *str, ptrdiff_t len, int force_symbol) |
| 237 | { |
| 238 | ptrdiff_t i; |
| 239 | Lisp_Object tem; |
| 240 | Lisp_Object obarray; |
| 241 | EMACS_INT nbytes, nchars; |
| 242 | |
| 243 | if (len == 1 && *str == '*') |
| 244 | return Qnil; |
| 245 | if (!force_symbol && 0 < len && '0' <= *str && *str <= '9') |
| 246 | { |
| 247 | for (i = 1; i < len; i++) |
| 248 | if (! ('0' <= str[i] && str[i] <= '9')) |
| 249 | break; |
| 250 | if (i == len) |
| 251 | { |
| 252 | EMACS_INT n; |
| 253 | |
| 254 | i = 0; |
| 255 | for (n = 0; (n += str[i++] - '0') <= MOST_POSITIVE_FIXNUM; n *= 10) |
| 256 | { |
| 257 | if (i == len) |
| 258 | return make_number (n); |
| 259 | if (MOST_POSITIVE_FIXNUM / 10 < n) |
| 260 | break; |
| 261 | } |
| 262 | |
| 263 | xsignal1 (Qoverflow_error, make_string (str, len)); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | /* The following code is copied from the function intern (in |
| 268 | lread.c), and modified to suit our purpose. */ |
| 269 | obarray = Vobarray; |
| 270 | if (!VECTORP (obarray) || ASIZE (obarray) == 0) |
| 271 | obarray = check_obarray (obarray); |
| 272 | parse_str_as_multibyte ((unsigned char *) str, len, &nchars, &nbytes); |
| 273 | if (len == nchars || len != nbytes) |
| 274 | /* CONTENTS contains no multibyte sequences or contains an invalid |
| 275 | multibyte sequence. We'll make a unibyte string. */ |
| 276 | tem = oblookup (obarray, str, len, len); |
| 277 | else |
| 278 | tem = oblookup (obarray, str, nchars, len); |
| 279 | if (SYMBOLP (tem)) |
| 280 | return tem; |
| 281 | if (len == nchars || len != nbytes) |
| 282 | tem = make_unibyte_string (str, len); |
| 283 | else |
| 284 | tem = make_multibyte_string (str, nchars, len); |
| 285 | return Fintern (tem, obarray); |
| 286 | } |
| 287 | |
| 288 | /* Return a pixel size of font-spec SPEC on frame F. */ |
| 289 | |
| 290 | static int |
| 291 | font_pixel_size (FRAME_PTR f, Lisp_Object spec) |
| 292 | { |
| 293 | #ifdef HAVE_WINDOW_SYSTEM |
| 294 | Lisp_Object size = AREF (spec, FONT_SIZE_INDEX); |
| 295 | double point_size; |
| 296 | int dpi, pixel_size; |
| 297 | Lisp_Object val; |
| 298 | |
| 299 | if (INTEGERP (size)) |
| 300 | return XINT (size); |
| 301 | if (NILP (size)) |
| 302 | return 0; |
| 303 | font_assert (FLOATP (size)); |
| 304 | point_size = XFLOAT_DATA (size); |
| 305 | val = AREF (spec, FONT_DPI_INDEX); |
| 306 | if (INTEGERP (val)) |
| 307 | dpi = XINT (val); |
| 308 | else |
| 309 | dpi = f->resy; |
| 310 | pixel_size = POINT_TO_PIXEL (point_size, dpi); |
| 311 | return pixel_size; |
| 312 | #else |
| 313 | return 1; |
| 314 | #endif |
| 315 | } |
| 316 | |
| 317 | |
| 318 | /* Return a value of PROP's VAL (symbol or integer) to be stored in a |
| 319 | font vector. If VAL is not valid (i.e. not registered in |
| 320 | font_style_table), return -1 if NOERROR is zero, and return a |
| 321 | proper index if NOERROR is nonzero. In that case, register VAL in |
| 322 | font_style_table if VAL is a symbol, and return the closest index if |
| 323 | VAL is an integer. */ |
| 324 | |
| 325 | int |
| 326 | font_style_to_value (enum font_property_index prop, Lisp_Object val, int noerror) |
| 327 | { |
| 328 | Lisp_Object table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 329 | int len = ASIZE (table); |
| 330 | |
| 331 | if (SYMBOLP (val)) |
| 332 | { |
| 333 | int i, j; |
| 334 | char *s; |
| 335 | Lisp_Object args[2], elt; |
| 336 | |
| 337 | /* At first try exact match. */ |
| 338 | for (i = 0; i < len; i++) |
| 339 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 340 | if (EQ (val, AREF (AREF (table, i), j))) |
| 341 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 342 | | (i << 4) | (j - 1)); |
| 343 | /* Try also with case-folding match. */ |
| 344 | s = SSDATA (SYMBOL_NAME (val)); |
| 345 | for (i = 0; i < len; i++) |
| 346 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 347 | { |
| 348 | elt = AREF (AREF (table, i), j); |
| 349 | if (xstrcasecmp (s, SSDATA (SYMBOL_NAME (elt))) == 0) |
| 350 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 351 | | (i << 4) | (j - 1)); |
| 352 | } |
| 353 | if (! noerror) |
| 354 | return -1; |
| 355 | if (len == 255) |
| 356 | abort (); |
| 357 | elt = Fmake_vector (make_number (2), make_number (100)); |
| 358 | ASET (elt, 1, val); |
| 359 | args[0] = table; |
| 360 | args[1] = Fmake_vector (make_number (1), elt); |
| 361 | ASET (font_style_table, prop - FONT_WEIGHT_INDEX, Fvconcat (2, args)); |
| 362 | return (100 << 8) | (i << 4); |
| 363 | } |
| 364 | else |
| 365 | { |
| 366 | int i, last_n; |
| 367 | int numeric = XINT (val); |
| 368 | |
| 369 | for (i = 0, last_n = -1; i < len; i++) |
| 370 | { |
| 371 | int n = XINT (AREF (AREF (table, i), 0)); |
| 372 | |
| 373 | if (numeric == n) |
| 374 | return (n << 8) | (i << 4); |
| 375 | if (numeric < n) |
| 376 | { |
| 377 | if (! noerror) |
| 378 | return -1; |
| 379 | return ((i == 0 || n - numeric < numeric - last_n) |
| 380 | ? (n << 8) | (i << 4): (last_n << 8 | ((i - 1) << 4))); |
| 381 | } |
| 382 | last_n = n; |
| 383 | } |
| 384 | if (! noerror) |
| 385 | return -1; |
| 386 | return ((last_n << 8) | ((i - 1) << 4)); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | Lisp_Object |
| 391 | font_style_symbolic (Lisp_Object font, enum font_property_index prop, int for_face) |
| 392 | { |
| 393 | Lisp_Object val = AREF (font, prop); |
| 394 | Lisp_Object table, elt; |
| 395 | int i; |
| 396 | |
| 397 | if (NILP (val)) |
| 398 | return Qnil; |
| 399 | table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 400 | i = XINT (val) & 0xFF; |
| 401 | font_assert (((i >> 4) & 0xF) < ASIZE (table)); |
| 402 | elt = AREF (table, ((i >> 4) & 0xF)); |
| 403 | font_assert ((i & 0xF) + 1 < ASIZE (elt)); |
| 404 | return (for_face ? AREF (elt, 1) : AREF (elt, (i & 0xF) + 1)); |
| 405 | } |
| 406 | |
| 407 | /* Return ENCODING or a cons of ENCODING and REPERTORY of the font |
| 408 | FONTNAME. ENCODING is a charset symbol that specifies the encoding |
| 409 | of the font. REPERTORY is a charset symbol or nil. */ |
| 410 | |
| 411 | Lisp_Object |
| 412 | find_font_encoding (Lisp_Object fontname) |
| 413 | { |
| 414 | Lisp_Object tail, elt; |
| 415 | |
| 416 | for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail)) |
| 417 | { |
| 418 | elt = XCAR (tail); |
| 419 | if (CONSP (elt) |
| 420 | && STRINGP (XCAR (elt)) |
| 421 | && fast_string_match_ignore_case (XCAR (elt), fontname) >= 0 |
| 422 | && (SYMBOLP (XCDR (elt)) |
| 423 | ? CHARSETP (XCDR (elt)) |
| 424 | : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt))))) |
| 425 | return (XCDR (elt)); |
| 426 | } |
| 427 | return Qnil; |
| 428 | } |
| 429 | |
| 430 | /* Return encoding charset and repertory charset for REGISTRY in |
| 431 | ENCODING and REPERTORY correspondingly. If correct information for |
| 432 | REGISTRY is available, return 0. Otherwise return -1. */ |
| 433 | |
| 434 | int |
| 435 | font_registry_charsets (Lisp_Object registry, struct charset **encoding, struct charset **repertory) |
| 436 | { |
| 437 | Lisp_Object val; |
| 438 | int encoding_id, repertory_id; |
| 439 | |
| 440 | val = Fassoc_string (registry, font_charset_alist, Qt); |
| 441 | if (! NILP (val)) |
| 442 | { |
| 443 | val = XCDR (val); |
| 444 | if (NILP (val)) |
| 445 | return -1; |
| 446 | encoding_id = XINT (XCAR (val)); |
| 447 | repertory_id = XINT (XCDR (val)); |
| 448 | } |
| 449 | else |
| 450 | { |
| 451 | val = find_font_encoding (SYMBOL_NAME (registry)); |
| 452 | if (SYMBOLP (val) && CHARSETP (val)) |
| 453 | { |
| 454 | encoding_id = repertory_id = XINT (CHARSET_SYMBOL_ID (val)); |
| 455 | } |
| 456 | else if (CONSP (val)) |
| 457 | { |
| 458 | if (! CHARSETP (XCAR (val))) |
| 459 | goto invalid_entry; |
| 460 | encoding_id = XINT (CHARSET_SYMBOL_ID (XCAR (val))); |
| 461 | if (NILP (XCDR (val))) |
| 462 | repertory_id = -1; |
| 463 | else |
| 464 | { |
| 465 | if (! CHARSETP (XCDR (val))) |
| 466 | goto invalid_entry; |
| 467 | repertory_id = XINT (CHARSET_SYMBOL_ID (XCDR (val))); |
| 468 | } |
| 469 | } |
| 470 | else |
| 471 | goto invalid_entry; |
| 472 | val = Fcons (make_number (encoding_id), make_number (repertory_id)); |
| 473 | font_charset_alist |
| 474 | = nconc2 (font_charset_alist, Fcons (Fcons (registry, val), Qnil)); |
| 475 | } |
| 476 | |
| 477 | if (encoding) |
| 478 | *encoding = CHARSET_FROM_ID (encoding_id); |
| 479 | if (repertory) |
| 480 | *repertory = repertory_id >= 0 ? CHARSET_FROM_ID (repertory_id) : NULL; |
| 481 | return 0; |
| 482 | |
| 483 | invalid_entry: |
| 484 | font_charset_alist |
| 485 | = nconc2 (font_charset_alist, Fcons (Fcons (registry, Qnil), Qnil)); |
| 486 | return -1; |
| 487 | } |
| 488 | |
| 489 | \f |
| 490 | /* Font property value validators. See the comment of |
| 491 | font_property_table for the meaning of the arguments. */ |
| 492 | |
| 493 | static Lisp_Object font_prop_validate (int, Lisp_Object, Lisp_Object); |
| 494 | static Lisp_Object font_prop_validate_symbol (Lisp_Object, Lisp_Object); |
| 495 | static Lisp_Object font_prop_validate_style (Lisp_Object, Lisp_Object); |
| 496 | static Lisp_Object font_prop_validate_non_neg (Lisp_Object, Lisp_Object); |
| 497 | static Lisp_Object font_prop_validate_spacing (Lisp_Object, Lisp_Object); |
| 498 | static int get_font_prop_index (Lisp_Object); |
| 499 | |
| 500 | static Lisp_Object |
| 501 | font_prop_validate_symbol (Lisp_Object prop, Lisp_Object val) |
| 502 | { |
| 503 | if (STRINGP (val)) |
| 504 | val = Fintern (val, Qnil); |
| 505 | if (! SYMBOLP (val)) |
| 506 | val = Qerror; |
| 507 | else if (EQ (prop, QCregistry)) |
| 508 | val = Fintern (Fdowncase (SYMBOL_NAME (val)), Qnil); |
| 509 | return val; |
| 510 | } |
| 511 | |
| 512 | |
| 513 | static Lisp_Object |
| 514 | font_prop_validate_style (Lisp_Object style, Lisp_Object val) |
| 515 | { |
| 516 | enum font_property_index prop = (EQ (style, QCweight) ? FONT_WEIGHT_INDEX |
| 517 | : EQ (style, QCslant) ? FONT_SLANT_INDEX |
| 518 | : FONT_WIDTH_INDEX); |
| 519 | if (INTEGERP (val)) |
| 520 | { |
| 521 | int n = XINT (val); |
| 522 | if (((n >> 4) & 0xF) |
| 523 | >= ASIZE (AREF (font_style_table, prop - FONT_WEIGHT_INDEX))) |
| 524 | val = Qerror; |
| 525 | else |
| 526 | { |
| 527 | Lisp_Object elt = AREF (AREF (font_style_table, prop - FONT_WEIGHT_INDEX), (n >> 4) & 0xF); |
| 528 | |
| 529 | if ((n & 0xF) + 1 >= ASIZE (elt)) |
| 530 | val = Qerror; |
| 531 | else if (XINT (AREF (elt, 0)) != (n >> 8)) |
| 532 | val = Qerror; |
| 533 | } |
| 534 | } |
| 535 | else if (SYMBOLP (val)) |
| 536 | { |
| 537 | int n = font_style_to_value (prop, val, 0); |
| 538 | |
| 539 | val = n >= 0 ? make_number (n) : Qerror; |
| 540 | } |
| 541 | else |
| 542 | val = Qerror; |
| 543 | return val; |
| 544 | } |
| 545 | |
| 546 | static Lisp_Object |
| 547 | font_prop_validate_non_neg (Lisp_Object prop, Lisp_Object val) |
| 548 | { |
| 549 | return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0) |
| 550 | ? val : Qerror); |
| 551 | } |
| 552 | |
| 553 | static Lisp_Object |
| 554 | font_prop_validate_spacing (Lisp_Object prop, Lisp_Object val) |
| 555 | { |
| 556 | if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL)) |
| 557 | return val; |
| 558 | if (SYMBOLP (val) && SBYTES (SYMBOL_NAME (val)) == 1) |
| 559 | { |
| 560 | char spacing = SDATA (SYMBOL_NAME (val))[0]; |
| 561 | |
| 562 | if (spacing == 'c' || spacing == 'C') |
| 563 | return make_number (FONT_SPACING_CHARCELL); |
| 564 | if (spacing == 'm' || spacing == 'M') |
| 565 | return make_number (FONT_SPACING_MONO); |
| 566 | if (spacing == 'p' || spacing == 'P') |
| 567 | return make_number (FONT_SPACING_PROPORTIONAL); |
| 568 | if (spacing == 'd' || spacing == 'D') |
| 569 | return make_number (FONT_SPACING_DUAL); |
| 570 | } |
| 571 | return Qerror; |
| 572 | } |
| 573 | |
| 574 | static Lisp_Object |
| 575 | font_prop_validate_otf (Lisp_Object prop, Lisp_Object val) |
| 576 | { |
| 577 | Lisp_Object tail, tmp; |
| 578 | int i; |
| 579 | |
| 580 | /* VAL = (SCRIPT [ LANGSYS [ GSUB-FEATURES [ GPOS-FEATURES ]]]) |
| 581 | GSUB-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil |
| 582 | GPOS-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil */ |
| 583 | if (! CONSP (val)) |
| 584 | return Qerror; |
| 585 | if (! SYMBOLP (XCAR (val))) |
| 586 | return Qerror; |
| 587 | tail = XCDR (val); |
| 588 | if (NILP (tail)) |
| 589 | return val; |
| 590 | if (! CONSP (tail) || ! SYMBOLP (XCAR (val))) |
| 591 | return Qerror; |
| 592 | for (i = 0; i < 2; i++) |
| 593 | { |
| 594 | tail = XCDR (tail); |
| 595 | if (NILP (tail)) |
| 596 | return val; |
| 597 | if (! CONSP (tail)) |
| 598 | return Qerror; |
| 599 | for (tmp = XCAR (tail); CONSP (tmp); tmp = XCDR (tmp)) |
| 600 | if (! SYMBOLP (XCAR (tmp))) |
| 601 | return Qerror; |
| 602 | if (! NILP (tmp)) |
| 603 | return Qerror; |
| 604 | } |
| 605 | return val; |
| 606 | } |
| 607 | |
| 608 | /* Structure of known font property keys and validator of the |
| 609 | values. */ |
| 610 | static const struct |
| 611 | { |
| 612 | /* Pointer to the key symbol. */ |
| 613 | Lisp_Object *key; |
| 614 | /* Function to validate PROP's value VAL, or NULL if any value is |
| 615 | ok. The value is VAL or its regularized value if VAL is valid, |
| 616 | and Qerror if not. */ |
| 617 | Lisp_Object (*validater) (Lisp_Object prop, Lisp_Object val); |
| 618 | } font_property_table[] = |
| 619 | { { &QCtype, font_prop_validate_symbol }, |
| 620 | { &QCfoundry, font_prop_validate_symbol }, |
| 621 | { &QCfamily, font_prop_validate_symbol }, |
| 622 | { &QCadstyle, font_prop_validate_symbol }, |
| 623 | { &QCregistry, font_prop_validate_symbol }, |
| 624 | { &QCweight, font_prop_validate_style }, |
| 625 | { &QCslant, font_prop_validate_style }, |
| 626 | { &QCwidth, font_prop_validate_style }, |
| 627 | { &QCsize, font_prop_validate_non_neg }, |
| 628 | { &QCdpi, font_prop_validate_non_neg }, |
| 629 | { &QCspacing, font_prop_validate_spacing }, |
| 630 | { &QCavgwidth, font_prop_validate_non_neg }, |
| 631 | /* The order of the above entries must match with enum |
| 632 | font_property_index. */ |
| 633 | { &QClang, font_prop_validate_symbol }, |
| 634 | { &QCscript, font_prop_validate_symbol }, |
| 635 | { &QCotf, font_prop_validate_otf } |
| 636 | }; |
| 637 | |
| 638 | /* Size (number of elements) of the above table. */ |
| 639 | #define FONT_PROPERTY_TABLE_SIZE \ |
| 640 | ((sizeof font_property_table) / (sizeof *font_property_table)) |
| 641 | |
| 642 | /* Return an index number of font property KEY or -1 if KEY is not an |
| 643 | already known property. */ |
| 644 | |
| 645 | static int |
| 646 | get_font_prop_index (Lisp_Object key) |
| 647 | { |
| 648 | int i; |
| 649 | |
| 650 | for (i = 0; i < FONT_PROPERTY_TABLE_SIZE; i++) |
| 651 | if (EQ (key, *font_property_table[i].key)) |
| 652 | return i; |
| 653 | return -1; |
| 654 | } |
| 655 | |
| 656 | /* Validate the font property. The property key is specified by the |
| 657 | symbol PROP, or the index IDX (if PROP is nil). If VAL is invalid, |
| 658 | signal an error. The value is VAL or the regularized one. */ |
| 659 | |
| 660 | static Lisp_Object |
| 661 | font_prop_validate (int idx, Lisp_Object prop, Lisp_Object val) |
| 662 | { |
| 663 | Lisp_Object validated; |
| 664 | |
| 665 | if (NILP (val)) |
| 666 | return val; |
| 667 | if (NILP (prop)) |
| 668 | prop = *font_property_table[idx].key; |
| 669 | else |
| 670 | { |
| 671 | idx = get_font_prop_index (prop); |
| 672 | if (idx < 0) |
| 673 | return val; |
| 674 | } |
| 675 | validated = (font_property_table[idx].validater) (prop, val); |
| 676 | if (EQ (validated, Qerror)) |
| 677 | signal_error ("invalid font property", Fcons (prop, val)); |
| 678 | return validated; |
| 679 | } |
| 680 | |
| 681 | |
| 682 | /* Store VAL as a value of extra font property PROP in FONT while |
| 683 | keeping the sorting order. Don't check the validity of VAL. */ |
| 684 | |
| 685 | Lisp_Object |
| 686 | font_put_extra (Lisp_Object font, Lisp_Object prop, Lisp_Object val) |
| 687 | { |
| 688 | Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX); |
| 689 | Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra)); |
| 690 | |
| 691 | if (NILP (slot)) |
| 692 | { |
| 693 | Lisp_Object prev = Qnil; |
| 694 | |
| 695 | while (CONSP (extra) |
| 696 | && NILP (Fstring_lessp (prop, XCAR (XCAR (extra))))) |
| 697 | prev = extra, extra = XCDR (extra); |
| 698 | |
| 699 | if (NILP (prev)) |
| 700 | ASET (font, FONT_EXTRA_INDEX, Fcons (Fcons (prop, val), extra)); |
| 701 | else |
| 702 | XSETCDR (prev, Fcons (Fcons (prop, val), extra)); |
| 703 | |
| 704 | return val; |
| 705 | } |
| 706 | XSETCDR (slot, val); |
| 707 | if (NILP (val)) |
| 708 | ASET (font, FONT_EXTRA_INDEX, Fdelq (slot, extra)); |
| 709 | return val; |
| 710 | } |
| 711 | |
| 712 | \f |
| 713 | /* Font name parser and unparser */ |
| 714 | |
| 715 | static int parse_matrix (const char *); |
| 716 | static int font_expand_wildcards (Lisp_Object *, int); |
| 717 | static int font_parse_name (char *, Lisp_Object); |
| 718 | |
| 719 | /* An enumerator for each field of an XLFD font name. */ |
| 720 | enum xlfd_field_index |
| 721 | { |
| 722 | XLFD_FOUNDRY_INDEX, |
| 723 | XLFD_FAMILY_INDEX, |
| 724 | XLFD_WEIGHT_INDEX, |
| 725 | XLFD_SLANT_INDEX, |
| 726 | XLFD_SWIDTH_INDEX, |
| 727 | XLFD_ADSTYLE_INDEX, |
| 728 | XLFD_PIXEL_INDEX, |
| 729 | XLFD_POINT_INDEX, |
| 730 | XLFD_RESX_INDEX, |
| 731 | XLFD_RESY_INDEX, |
| 732 | XLFD_SPACING_INDEX, |
| 733 | XLFD_AVGWIDTH_INDEX, |
| 734 | XLFD_REGISTRY_INDEX, |
| 735 | XLFD_ENCODING_INDEX, |
| 736 | XLFD_LAST_INDEX |
| 737 | }; |
| 738 | |
| 739 | /* An enumerator for mask bit corresponding to each XLFD field. */ |
| 740 | enum xlfd_field_mask |
| 741 | { |
| 742 | XLFD_FOUNDRY_MASK = 0x0001, |
| 743 | XLFD_FAMILY_MASK = 0x0002, |
| 744 | XLFD_WEIGHT_MASK = 0x0004, |
| 745 | XLFD_SLANT_MASK = 0x0008, |
| 746 | XLFD_SWIDTH_MASK = 0x0010, |
| 747 | XLFD_ADSTYLE_MASK = 0x0020, |
| 748 | XLFD_PIXEL_MASK = 0x0040, |
| 749 | XLFD_POINT_MASK = 0x0080, |
| 750 | XLFD_RESX_MASK = 0x0100, |
| 751 | XLFD_RESY_MASK = 0x0200, |
| 752 | XLFD_SPACING_MASK = 0x0400, |
| 753 | XLFD_AVGWIDTH_MASK = 0x0800, |
| 754 | XLFD_REGISTRY_MASK = 0x1000, |
| 755 | XLFD_ENCODING_MASK = 0x2000 |
| 756 | }; |
| 757 | |
| 758 | |
| 759 | /* Parse P pointing to the pixel/point size field of the form |
| 760 | `[A B C D]' which specifies a transformation matrix: |
| 761 | |
| 762 | A B 0 |
| 763 | C D 0 |
| 764 | 0 0 1 |
| 765 | |
| 766 | by which all glyphs of the font are transformed. The spec says |
| 767 | that scalar value N for the pixel/point size is equivalent to: |
| 768 | A = N * resx/resy, B = C = 0, D = N. |
| 769 | |
| 770 | Return the scalar value N if the form is valid. Otherwise return |
| 771 | -1. */ |
| 772 | |
| 773 | static int |
| 774 | parse_matrix (const char *p) |
| 775 | { |
| 776 | double matrix[4]; |
| 777 | char *end; |
| 778 | int i; |
| 779 | |
| 780 | for (i = 0, p++; i < 4 && *p && *p != ']'; i++) |
| 781 | { |
| 782 | if (*p == '~') |
| 783 | matrix[i] = - strtod (p + 1, &end); |
| 784 | else |
| 785 | matrix[i] = strtod (p, &end); |
| 786 | p = end; |
| 787 | } |
| 788 | return (i == 4 ? (int) matrix[3] : -1); |
| 789 | } |
| 790 | |
| 791 | /* Expand a wildcard field in FIELD (the first N fields are filled) to |
| 792 | multiple fields to fill in all 14 XLFD fields while restricting a |
| 793 | field position by its contents. */ |
| 794 | |
| 795 | static int |
| 796 | font_expand_wildcards (Lisp_Object *field, int n) |
| 797 | { |
| 798 | /* Copy of FIELD. */ |
| 799 | Lisp_Object tmp[XLFD_LAST_INDEX]; |
| 800 | /* Array of information about where this element can go. Nth |
| 801 | element is for Nth element of FIELD. */ |
| 802 | struct { |
| 803 | /* Minimum possible field. */ |
| 804 | int from; |
| 805 | /* Maxinum possible field. */ |
| 806 | int to; |
| 807 | /* Bit mask of possible field. Nth bit corresponds to Nth field. */ |
| 808 | int mask; |
| 809 | } range[XLFD_LAST_INDEX]; |
| 810 | int i, j; |
| 811 | int range_from, range_to; |
| 812 | unsigned range_mask; |
| 813 | |
| 814 | #define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \ |
| 815 | | XLFD_ADSTYLE_MASK | XLFD_REGISTRY_MASK) |
| 816 | #define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK) |
| 817 | #define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \ |
| 818 | | XLFD_AVGWIDTH_MASK) |
| 819 | #define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK) |
| 820 | |
| 821 | /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th |
| 822 | field. The value is shifted to left one bit by one in the |
| 823 | following loop. */ |
| 824 | for (i = 0, range_mask = 0; i <= 14 - n; i++) |
| 825 | range_mask = (range_mask << 1) | 1; |
| 826 | |
| 827 | /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a |
| 828 | position-based retriction for FIELD[I]. */ |
| 829 | for (i = 0, range_from = 0, range_to = 14 - n; i < n; |
| 830 | i++, range_from++, range_to++, range_mask <<= 1) |
| 831 | { |
| 832 | Lisp_Object val = field[i]; |
| 833 | |
| 834 | tmp[i] = val; |
| 835 | if (NILP (val)) |
| 836 | { |
| 837 | /* Wildcard. */ |
| 838 | range[i].from = range_from; |
| 839 | range[i].to = range_to; |
| 840 | range[i].mask = range_mask; |
| 841 | } |
| 842 | else |
| 843 | { |
| 844 | /* The triplet FROM, TO, and MASK is a value-based |
| 845 | retriction for FIELD[I]. */ |
| 846 | int from, to; |
| 847 | unsigned mask; |
| 848 | |
| 849 | if (INTEGERP (val)) |
| 850 | { |
| 851 | int numeric = XINT (val); |
| 852 | |
| 853 | if (i + 1 == n) |
| 854 | from = to = XLFD_ENCODING_INDEX, |
| 855 | mask = XLFD_ENCODING_MASK; |
| 856 | else if (numeric == 0) |
| 857 | from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 858 | mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK; |
| 859 | else if (numeric <= 48) |
| 860 | from = to = XLFD_PIXEL_INDEX, |
| 861 | mask = XLFD_PIXEL_MASK; |
| 862 | else |
| 863 | from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 864 | mask = XLFD_LARGENUM_MASK; |
| 865 | } |
| 866 | else if (SBYTES (SYMBOL_NAME (val)) == 0) |
| 867 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ADSTYLE_INDEX, |
| 868 | mask = XLFD_NULL_MASK; |
| 869 | else if (i == 0) |
| 870 | from = to = XLFD_FOUNDRY_INDEX, mask = XLFD_FOUNDRY_MASK; |
| 871 | else if (i + 1 == n) |
| 872 | { |
| 873 | Lisp_Object name = SYMBOL_NAME (val); |
| 874 | |
| 875 | if (SDATA (name)[SBYTES (name) - 1] == '*') |
| 876 | from = XLFD_REGISTRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 877 | mask = XLFD_REGENC_MASK; |
| 878 | else |
| 879 | from = to = XLFD_ENCODING_INDEX, |
| 880 | mask = XLFD_ENCODING_MASK; |
| 881 | } |
| 882 | else if (range_from <= XLFD_WEIGHT_INDEX |
| 883 | && range_to >= XLFD_WEIGHT_INDEX |
| 884 | && FONT_WEIGHT_NAME_NUMERIC (val) >= 0) |
| 885 | from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK; |
| 886 | else if (range_from <= XLFD_SLANT_INDEX |
| 887 | && range_to >= XLFD_SLANT_INDEX |
| 888 | && FONT_SLANT_NAME_NUMERIC (val) >= 0) |
| 889 | from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK; |
| 890 | else if (range_from <= XLFD_SWIDTH_INDEX |
| 891 | && range_to >= XLFD_SWIDTH_INDEX |
| 892 | && FONT_WIDTH_NAME_NUMERIC (val) >= 0) |
| 893 | from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK; |
| 894 | else |
| 895 | { |
| 896 | if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd)) |
| 897 | from = to = XLFD_SPACING_INDEX, mask = XLFD_SPACING_MASK; |
| 898 | else |
| 899 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 900 | mask = XLFD_SYMBOL_MASK; |
| 901 | } |
| 902 | |
| 903 | /* Merge position-based and value-based restrictions. */ |
| 904 | mask &= range_mask; |
| 905 | while (from < range_from) |
| 906 | mask &= ~(1 << from++); |
| 907 | while (from < 14 && ! (mask & (1 << from))) |
| 908 | from++; |
| 909 | while (to > range_to) |
| 910 | mask &= ~(1 << to--); |
| 911 | while (to >= 0 && ! (mask & (1 << to))) |
| 912 | to--; |
| 913 | if (from > to) |
| 914 | return -1; |
| 915 | range[i].from = from; |
| 916 | range[i].to = to; |
| 917 | range[i].mask = mask; |
| 918 | |
| 919 | if (from > range_from || to < range_to) |
| 920 | { |
| 921 | /* The range is narrowed by value-based restrictions. |
| 922 | Reflect it to the other fields. */ |
| 923 | |
| 924 | /* Following fields should be after FROM. */ |
| 925 | range_from = from; |
| 926 | /* Preceding fields should be before TO. */ |
| 927 | for (j = i - 1, from--, to--; j >= 0; j--, from--, to--) |
| 928 | { |
| 929 | /* Check FROM for non-wildcard field. */ |
| 930 | if (! NILP (tmp[j]) && range[j].from < from) |
| 931 | { |
| 932 | while (range[j].from < from) |
| 933 | range[j].mask &= ~(1 << range[j].from++); |
| 934 | while (from < 14 && ! (range[j].mask & (1 << from))) |
| 935 | from++; |
| 936 | range[j].from = from; |
| 937 | } |
| 938 | else |
| 939 | from = range[j].from; |
| 940 | if (range[j].to > to) |
| 941 | { |
| 942 | while (range[j].to > to) |
| 943 | range[j].mask &= ~(1 << range[j].to--); |
| 944 | while (to >= 0 && ! (range[j].mask & (1 << to))) |
| 945 | to--; |
| 946 | range[j].to = to; |
| 947 | } |
| 948 | else |
| 949 | to = range[j].to; |
| 950 | if (from > to) |
| 951 | return -1; |
| 952 | } |
| 953 | } |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | /* Decide all fileds from restrictions in RANGE. */ |
| 958 | for (i = j = 0; i < n ; i++) |
| 959 | { |
| 960 | if (j < range[i].from) |
| 961 | { |
| 962 | if (i == 0 || ! NILP (tmp[i - 1])) |
| 963 | /* None of TMP[X] corresponds to Jth field. */ |
| 964 | return -1; |
| 965 | for (; j < range[i].from; j++) |
| 966 | field[j] = Qnil; |
| 967 | } |
| 968 | field[j++] = tmp[i]; |
| 969 | } |
| 970 | if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX) |
| 971 | return -1; |
| 972 | for (; j < XLFD_LAST_INDEX; j++) |
| 973 | field[j] = Qnil; |
| 974 | if (INTEGERP (field[XLFD_ENCODING_INDEX])) |
| 975 | field[XLFD_ENCODING_INDEX] |
| 976 | = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil); |
| 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | |
| 981 | /* Parse NAME (null terminated) as XLFD and store information in FONT |
| 982 | (font-spec or font-entity). Size property of FONT is set as |
| 983 | follows: |
| 984 | specified XLFD fields FONT property |
| 985 | --------------------- ------------- |
| 986 | PIXEL_SIZE PIXEL_SIZE (Lisp integer) |
| 987 | POINT_SIZE and RESY calculated pixel size (Lisp integer) |
| 988 | POINT_SIZE POINT_SIZE/10 (Lisp float) |
| 989 | |
| 990 | If NAME is successfully parsed, return 0. Otherwise return -1. |
| 991 | |
| 992 | FONT is usually a font-spec, but when this function is called from |
| 993 | X font backend driver, it is a font-entity. In that case, NAME is |
| 994 | a fully specified XLFD. */ |
| 995 | |
| 996 | int |
| 997 | font_parse_xlfd (char *name, Lisp_Object font) |
| 998 | { |
| 999 | ptrdiff_t len = strlen (name); |
| 1000 | int i, j, n; |
| 1001 | char *f[XLFD_LAST_INDEX + 1]; |
| 1002 | Lisp_Object val; |
| 1003 | char *p; |
| 1004 | |
| 1005 | if (len > 255 || !len) |
| 1006 | /* Maximum XLFD name length is 255. */ |
| 1007 | return -1; |
| 1008 | /* Accept "*-.." as a fully specified XLFD. */ |
| 1009 | if (name[0] == '*' && (len == 1 || name[1] == '-')) |
| 1010 | i = 1, f[XLFD_FOUNDRY_INDEX] = name; |
| 1011 | else |
| 1012 | i = 0; |
| 1013 | for (p = name + i; *p; p++) |
| 1014 | if (*p == '-') |
| 1015 | { |
| 1016 | f[i++] = p + 1; |
| 1017 | if (i == XLFD_LAST_INDEX) |
| 1018 | break; |
| 1019 | } |
| 1020 | f[i] = name + len; |
| 1021 | |
| 1022 | #define INTERN_FIELD(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 0) |
| 1023 | #define INTERN_FIELD_SYM(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 1) |
| 1024 | |
| 1025 | if (i == XLFD_LAST_INDEX) |
| 1026 | { |
| 1027 | /* Fully specified XLFD. */ |
| 1028 | int pixel_size; |
| 1029 | |
| 1030 | ASET (font, FONT_FOUNDRY_INDEX, INTERN_FIELD_SYM (XLFD_FOUNDRY_INDEX)); |
| 1031 | ASET (font, FONT_FAMILY_INDEX, INTERN_FIELD_SYM (XLFD_FAMILY_INDEX)); |
| 1032 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1033 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1034 | { |
| 1035 | val = INTERN_FIELD_SYM (i); |
| 1036 | if (! NILP (val)) |
| 1037 | { |
| 1038 | if ((n = font_style_to_value (j, INTERN_FIELD_SYM (i), 0)) < 0) |
| 1039 | return -1; |
| 1040 | ASET (font, j, make_number (n)); |
| 1041 | } |
| 1042 | } |
| 1043 | ASET (font, FONT_ADSTYLE_INDEX, INTERN_FIELD_SYM (XLFD_ADSTYLE_INDEX)); |
| 1044 | if (strcmp (f[XLFD_REGISTRY_INDEX], "*-*") == 0) |
| 1045 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 1046 | else |
| 1047 | ASET (font, FONT_REGISTRY_INDEX, |
| 1048 | font_intern_prop (f[XLFD_REGISTRY_INDEX], |
| 1049 | f[XLFD_LAST_INDEX] - f[XLFD_REGISTRY_INDEX], |
| 1050 | 1)); |
| 1051 | p = f[XLFD_PIXEL_INDEX]; |
| 1052 | if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0) |
| 1053 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 1054 | else |
| 1055 | { |
| 1056 | val = INTERN_FIELD (XLFD_PIXEL_INDEX); |
| 1057 | if (INTEGERP (val)) |
| 1058 | ASET (font, FONT_SIZE_INDEX, val); |
| 1059 | else if (FONT_ENTITY_P (font)) |
| 1060 | return -1; |
| 1061 | else |
| 1062 | { |
| 1063 | double point_size = -1; |
| 1064 | |
| 1065 | font_assert (FONT_SPEC_P (font)); |
| 1066 | p = f[XLFD_POINT_INDEX]; |
| 1067 | if (*p == '[') |
| 1068 | point_size = parse_matrix (p); |
| 1069 | else if (isdigit (*p)) |
| 1070 | point_size = atoi (p), point_size /= 10; |
| 1071 | if (point_size >= 0) |
| 1072 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | val = INTERN_FIELD (XLFD_RESY_INDEX); |
| 1077 | if (! NILP (val) && ! INTEGERP (val)) |
| 1078 | return -1; |
| 1079 | ASET (font, FONT_DPI_INDEX, val); |
| 1080 | val = INTERN_FIELD (XLFD_SPACING_INDEX); |
| 1081 | if (! NILP (val)) |
| 1082 | { |
| 1083 | val = font_prop_validate_spacing (QCspacing, val); |
| 1084 | if (! INTEGERP (val)) |
| 1085 | return -1; |
| 1086 | ASET (font, FONT_SPACING_INDEX, val); |
| 1087 | } |
| 1088 | p = f[XLFD_AVGWIDTH_INDEX]; |
| 1089 | if (*p == '~') |
| 1090 | p++; |
| 1091 | val = font_intern_prop (p, f[XLFD_REGISTRY_INDEX] - 1 - p, 0); |
| 1092 | if (! NILP (val) && ! INTEGERP (val)) |
| 1093 | return -1; |
| 1094 | ASET (font, FONT_AVGWIDTH_INDEX, val); |
| 1095 | } |
| 1096 | else |
| 1097 | { |
| 1098 | int wild_card_found = 0; |
| 1099 | Lisp_Object prop[XLFD_LAST_INDEX]; |
| 1100 | |
| 1101 | if (FONT_ENTITY_P (font)) |
| 1102 | return -1; |
| 1103 | for (j = 0; j < i; j++) |
| 1104 | { |
| 1105 | if (*f[j] == '*') |
| 1106 | { |
| 1107 | if (f[j][1] && f[j][1] != '-') |
| 1108 | return -1; |
| 1109 | prop[j] = Qnil; |
| 1110 | wild_card_found = 1; |
| 1111 | } |
| 1112 | else if (j + 1 < i) |
| 1113 | prop[j] = INTERN_FIELD (j); |
| 1114 | else |
| 1115 | prop[j] = font_intern_prop (f[j], f[i] - f[j], 0); |
| 1116 | } |
| 1117 | if (! wild_card_found) |
| 1118 | return -1; |
| 1119 | if (font_expand_wildcards (prop, i) < 0) |
| 1120 | return -1; |
| 1121 | |
| 1122 | ASET (font, FONT_FOUNDRY_INDEX, prop[XLFD_FOUNDRY_INDEX]); |
| 1123 | ASET (font, FONT_FAMILY_INDEX, prop[XLFD_FAMILY_INDEX]); |
| 1124 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1125 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1126 | if (! NILP (prop[i])) |
| 1127 | { |
| 1128 | if ((n = font_style_to_value (j, prop[i], 1)) < 0) |
| 1129 | return -1; |
| 1130 | ASET (font, j, make_number (n)); |
| 1131 | } |
| 1132 | ASET (font, FONT_ADSTYLE_INDEX, prop[XLFD_ADSTYLE_INDEX]); |
| 1133 | val = prop[XLFD_REGISTRY_INDEX]; |
| 1134 | if (NILP (val)) |
| 1135 | { |
| 1136 | val = prop[XLFD_ENCODING_INDEX]; |
| 1137 | if (! NILP (val)) |
| 1138 | val = concat2 (build_string ("*-"), SYMBOL_NAME (val)); |
| 1139 | } |
| 1140 | else if (NILP (prop[XLFD_ENCODING_INDEX])) |
| 1141 | val = concat2 (SYMBOL_NAME (val), build_string ("-*")); |
| 1142 | else |
| 1143 | val = concat3 (SYMBOL_NAME (val), build_string ("-"), |
| 1144 | SYMBOL_NAME (prop[XLFD_ENCODING_INDEX])); |
| 1145 | if (! NILP (val)) |
| 1146 | ASET (font, FONT_REGISTRY_INDEX, Fintern (val, Qnil)); |
| 1147 | |
| 1148 | if (INTEGERP (prop[XLFD_PIXEL_INDEX])) |
| 1149 | ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]); |
| 1150 | else if (INTEGERP (prop[XLFD_POINT_INDEX])) |
| 1151 | { |
| 1152 | double point_size = XINT (prop[XLFD_POINT_INDEX]); |
| 1153 | |
| 1154 | ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10)); |
| 1155 | } |
| 1156 | |
| 1157 | if (INTEGERP (prop[XLFD_RESX_INDEX])) |
| 1158 | ASET (font, FONT_DPI_INDEX, prop[XLFD_RESY_INDEX]); |
| 1159 | if (! NILP (prop[XLFD_SPACING_INDEX])) |
| 1160 | { |
| 1161 | val = font_prop_validate_spacing (QCspacing, |
| 1162 | prop[XLFD_SPACING_INDEX]); |
| 1163 | if (! INTEGERP (val)) |
| 1164 | return -1; |
| 1165 | ASET (font, FONT_SPACING_INDEX, val); |
| 1166 | } |
| 1167 | if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX])) |
| 1168 | ASET (font, FONT_AVGWIDTH_INDEX, prop[XLFD_AVGWIDTH_INDEX]); |
| 1169 | } |
| 1170 | |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES |
| 1175 | length), and return the name length. If FONT_SIZE_INDEX of FONT is |
| 1176 | 0, use PIXEL_SIZE instead. */ |
| 1177 | |
| 1178 | int |
| 1179 | font_unparse_xlfd (Lisp_Object font, int pixel_size, char *name, int nbytes) |
| 1180 | { |
| 1181 | char *p; |
| 1182 | const char *f[XLFD_REGISTRY_INDEX + 1]; |
| 1183 | Lisp_Object val; |
| 1184 | int i, j, len; |
| 1185 | |
| 1186 | font_assert (FONTP (font)); |
| 1187 | |
| 1188 | for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; |
| 1189 | i++, j++) |
| 1190 | { |
| 1191 | if (i == FONT_ADSTYLE_INDEX) |
| 1192 | j = XLFD_ADSTYLE_INDEX; |
| 1193 | else if (i == FONT_REGISTRY_INDEX) |
| 1194 | j = XLFD_REGISTRY_INDEX; |
| 1195 | val = AREF (font, i); |
| 1196 | if (NILP (val)) |
| 1197 | { |
| 1198 | if (j == XLFD_REGISTRY_INDEX) |
| 1199 | f[j] = "*-*"; |
| 1200 | else |
| 1201 | f[j] = "*"; |
| 1202 | } |
| 1203 | else |
| 1204 | { |
| 1205 | if (SYMBOLP (val)) |
| 1206 | val = SYMBOL_NAME (val); |
| 1207 | if (j == XLFD_REGISTRY_INDEX |
| 1208 | && ! strchr (SSDATA (val), '-')) |
| 1209 | { |
| 1210 | /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */ |
| 1211 | ptrdiff_t alloc = SBYTES (val) + 4; |
| 1212 | if (nbytes <= alloc) |
| 1213 | return -1; |
| 1214 | f[j] = p = alloca (alloc); |
| 1215 | sprintf (p, "%s%s-*", SDATA (val), |
| 1216 | "*" + (SDATA (val)[SBYTES (val) - 1] == '*')); |
| 1217 | } |
| 1218 | else |
| 1219 | f[j] = SSDATA (val); |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; |
| 1224 | i++, j++) |
| 1225 | { |
| 1226 | val = font_style_symbolic (font, i, 0); |
| 1227 | if (NILP (val)) |
| 1228 | f[j] = "*"; |
| 1229 | else |
| 1230 | { |
| 1231 | val = SYMBOL_NAME (val); |
| 1232 | f[j] = SSDATA (val); |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | val = AREF (font, FONT_SIZE_INDEX); |
| 1237 | font_assert (NUMBERP (val) || NILP (val)); |
| 1238 | if (INTEGERP (val)) |
| 1239 | { |
| 1240 | EMACS_INT v = XINT (val); |
| 1241 | if (v <= 0) |
| 1242 | v = pixel_size; |
| 1243 | if (v > 0) |
| 1244 | { |
| 1245 | f[XLFD_PIXEL_INDEX] = p = |
| 1246 | alloca (sizeof "-*" + INT_STRLEN_BOUND (EMACS_INT)); |
| 1247 | sprintf (p, "%"pI"d-*", v); |
| 1248 | } |
| 1249 | else |
| 1250 | f[XLFD_PIXEL_INDEX] = "*-*"; |
| 1251 | } |
| 1252 | else if (FLOATP (val)) |
| 1253 | { |
| 1254 | double v = XFLOAT_DATA (val) * 10; |
| 1255 | f[XLFD_PIXEL_INDEX] = p = alloca (sizeof "*-" + 1 + DBL_MAX_10_EXP + 1); |
| 1256 | sprintf (p, "*-%.0f", v); |
| 1257 | } |
| 1258 | else |
| 1259 | f[XLFD_PIXEL_INDEX] = "*-*"; |
| 1260 | |
| 1261 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1262 | { |
| 1263 | EMACS_INT v = XINT (AREF (font, FONT_DPI_INDEX)); |
| 1264 | f[XLFD_RESX_INDEX] = p = |
| 1265 | alloca (sizeof "-" + 2 * INT_STRLEN_BOUND (EMACS_INT)); |
| 1266 | sprintf (p, "%"pI"d-%"pI"d", v, v); |
| 1267 | } |
| 1268 | else |
| 1269 | f[XLFD_RESX_INDEX] = "*-*"; |
| 1270 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1271 | { |
| 1272 | EMACS_INT spacing = XINT (AREF (font, FONT_SPACING_INDEX)); |
| 1273 | |
| 1274 | f[XLFD_SPACING_INDEX] = (spacing <= FONT_SPACING_PROPORTIONAL ? "p" |
| 1275 | : spacing <= FONT_SPACING_DUAL ? "d" |
| 1276 | : spacing <= FONT_SPACING_MONO ? "m" |
| 1277 | : "c"); |
| 1278 | } |
| 1279 | else |
| 1280 | f[XLFD_SPACING_INDEX] = "*"; |
| 1281 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1282 | { |
| 1283 | f[XLFD_AVGWIDTH_INDEX] = p = alloca (INT_BUFSIZE_BOUND (EMACS_INT)); |
| 1284 | sprintf (p, "%"pI"d", XINT (AREF (font, FONT_AVGWIDTH_INDEX))); |
| 1285 | } |
| 1286 | else |
| 1287 | f[XLFD_AVGWIDTH_INDEX] = "*"; |
| 1288 | len = esnprintf (name, nbytes, "-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s", |
| 1289 | f[XLFD_FOUNDRY_INDEX], f[XLFD_FAMILY_INDEX], |
| 1290 | f[XLFD_WEIGHT_INDEX], f[XLFD_SLANT_INDEX], |
| 1291 | f[XLFD_SWIDTH_INDEX], f[XLFD_ADSTYLE_INDEX], |
| 1292 | f[XLFD_PIXEL_INDEX], f[XLFD_RESX_INDEX], |
| 1293 | f[XLFD_SPACING_INDEX], f[XLFD_AVGWIDTH_INDEX], |
| 1294 | f[XLFD_REGISTRY_INDEX]); |
| 1295 | return len == nbytes - 1 ? -1 : len; |
| 1296 | } |
| 1297 | |
| 1298 | /* Parse NAME (null terminated) and store information in FONT |
| 1299 | (font-spec or font-entity). NAME is supplied in either the |
| 1300 | Fontconfig or GTK font name format. If NAME is successfully |
| 1301 | parsed, return 0. Otherwise return -1. |
| 1302 | |
| 1303 | The fontconfig format is |
| 1304 | |
| 1305 | FAMILY[-SIZE][:PROP1[=VAL1][:PROP2[=VAL2]...]] |
| 1306 | |
| 1307 | The GTK format is |
| 1308 | |
| 1309 | FAMILY [PROPS...] [SIZE] |
| 1310 | |
| 1311 | This function tries to guess which format it is. */ |
| 1312 | |
| 1313 | static int |
| 1314 | font_parse_fcname (char *name, Lisp_Object font) |
| 1315 | { |
| 1316 | char *p, *q; |
| 1317 | char *size_beg = NULL, *size_end = NULL; |
| 1318 | char *props_beg = NULL, *family_end = NULL; |
| 1319 | ptrdiff_t len = strlen (name); |
| 1320 | |
| 1321 | if (len == 0) |
| 1322 | return -1; |
| 1323 | |
| 1324 | for (p = name; *p; p++) |
| 1325 | { |
| 1326 | if (*p == '\\' && p[1]) |
| 1327 | p++; |
| 1328 | else if (*p == ':') |
| 1329 | { |
| 1330 | props_beg = family_end = p; |
| 1331 | break; |
| 1332 | } |
| 1333 | else if (*p == '-') |
| 1334 | { |
| 1335 | int decimal = 0, size_found = 1; |
| 1336 | for (q = p + 1; *q && *q != ':'; q++) |
| 1337 | if (! isdigit(*q)) |
| 1338 | { |
| 1339 | if (*q != '.' || decimal) |
| 1340 | { |
| 1341 | size_found = 0; |
| 1342 | break; |
| 1343 | } |
| 1344 | decimal = 1; |
| 1345 | } |
| 1346 | if (size_found) |
| 1347 | { |
| 1348 | family_end = p; |
| 1349 | size_beg = p + 1; |
| 1350 | size_end = q; |
| 1351 | break; |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | if (family_end) |
| 1357 | { |
| 1358 | Lisp_Object extra_props = Qnil; |
| 1359 | |
| 1360 | /* A fontconfig name with size and/or property data. */ |
| 1361 | if (family_end > name) |
| 1362 | { |
| 1363 | Lisp_Object family; |
| 1364 | family = font_intern_prop (name, family_end - name, 1); |
| 1365 | ASET (font, FONT_FAMILY_INDEX, family); |
| 1366 | } |
| 1367 | if (size_beg) |
| 1368 | { |
| 1369 | double point_size = strtod (size_beg, &size_end); |
| 1370 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1371 | if (*size_end == ':' && size_end[1]) |
| 1372 | props_beg = size_end; |
| 1373 | } |
| 1374 | if (props_beg) |
| 1375 | { |
| 1376 | /* Now parse ":KEY=VAL" patterns. */ |
| 1377 | Lisp_Object val; |
| 1378 | |
| 1379 | for (p = props_beg; *p; p = q) |
| 1380 | { |
| 1381 | for (q = p + 1; *q && *q != '=' && *q != ':'; q++); |
| 1382 | if (*q != '=') |
| 1383 | { |
| 1384 | /* Must be an enumerated value. */ |
| 1385 | ptrdiff_t word_len; |
| 1386 | p = p + 1; |
| 1387 | word_len = q - p; |
| 1388 | val = font_intern_prop (p, q - p, 1); |
| 1389 | |
| 1390 | #define PROP_MATCH(STR) (word_len == strlen (STR) \ |
| 1391 | && memcmp (p, STR, strlen (STR)) == 0) |
| 1392 | |
| 1393 | if (PROP_MATCH ("light") |
| 1394 | || PROP_MATCH ("medium") |
| 1395 | || PROP_MATCH ("demibold") |
| 1396 | || PROP_MATCH ("bold") |
| 1397 | || PROP_MATCH ("black")) |
| 1398 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, val); |
| 1399 | else if (PROP_MATCH ("roman") |
| 1400 | || PROP_MATCH ("italic") |
| 1401 | || PROP_MATCH ("oblique")) |
| 1402 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, val); |
| 1403 | else if (PROP_MATCH ("charcell")) |
| 1404 | ASET (font, FONT_SPACING_INDEX, |
| 1405 | make_number (FONT_SPACING_CHARCELL)); |
| 1406 | else if (PROP_MATCH ("mono")) |
| 1407 | ASET (font, FONT_SPACING_INDEX, |
| 1408 | make_number (FONT_SPACING_MONO)); |
| 1409 | else if (PROP_MATCH ("proportional")) |
| 1410 | ASET (font, FONT_SPACING_INDEX, |
| 1411 | make_number (FONT_SPACING_PROPORTIONAL)); |
| 1412 | #undef PROP_MATCH |
| 1413 | } |
| 1414 | else |
| 1415 | { |
| 1416 | /* KEY=VAL pairs */ |
| 1417 | Lisp_Object key; |
| 1418 | int prop; |
| 1419 | |
| 1420 | if (q - p == 10 && memcmp (p + 1, "pixelsize", 9) == 0) |
| 1421 | prop = FONT_SIZE_INDEX; |
| 1422 | else |
| 1423 | { |
| 1424 | key = font_intern_prop (p, q - p, 1); |
| 1425 | prop = get_font_prop_index (key); |
| 1426 | } |
| 1427 | |
| 1428 | p = q + 1; |
| 1429 | for (q = p; *q && *q != ':'; q++); |
| 1430 | val = font_intern_prop (p, q - p, 0); |
| 1431 | |
| 1432 | if (prop >= FONT_FOUNDRY_INDEX |
| 1433 | && prop < FONT_EXTRA_INDEX) |
| 1434 | ASET (font, prop, font_prop_validate (prop, Qnil, val)); |
| 1435 | else |
| 1436 | { |
| 1437 | extra_props = nconc2 (extra_props, |
| 1438 | Fcons (Fcons (key, val), Qnil)); |
| 1439 | } |
| 1440 | } |
| 1441 | p = q; |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | if (! NILP (extra_props)) |
| 1446 | { |
| 1447 | struct font_driver_list *driver_list = font_driver_list; |
| 1448 | for ( ; driver_list; driver_list = driver_list->next) |
| 1449 | if (driver_list->driver->filter_properties) |
| 1450 | (*driver_list->driver->filter_properties) (font, extra_props); |
| 1451 | } |
| 1452 | |
| 1453 | } |
| 1454 | else |
| 1455 | { |
| 1456 | /* Either a fontconfig-style name with no size and property |
| 1457 | data, or a GTK-style name. */ |
| 1458 | Lisp_Object weight = Qnil, slant = Qnil; |
| 1459 | Lisp_Object width = Qnil, size = Qnil; |
| 1460 | char *word_start; |
| 1461 | ptrdiff_t word_len; |
| 1462 | |
| 1463 | /* Scan backwards from the end, looking for a size. */ |
| 1464 | for (p = name + len - 1; p >= name; p--) |
| 1465 | if (!isdigit (*p)) |
| 1466 | break; |
| 1467 | |
| 1468 | if ((p < name + len - 1) && ((p + 1 == name) || *p == ' ')) |
| 1469 | /* Found a font size. */ |
| 1470 | size = make_float (strtod (p + 1, NULL)); |
| 1471 | else |
| 1472 | p = name + len; |
| 1473 | |
| 1474 | /* Now P points to the termination of the string, sans size. |
| 1475 | Scan backwards, looking for font properties. */ |
| 1476 | for (; p > name; p = q) |
| 1477 | { |
| 1478 | for (q = p - 1; q >= name; q--) |
| 1479 | { |
| 1480 | if (q > name && *(q-1) == '\\') |
| 1481 | --q; /* Skip quoting backslashes. */ |
| 1482 | else if (*q == ' ') |
| 1483 | break; |
| 1484 | } |
| 1485 | |
| 1486 | word_start = q + 1; |
| 1487 | word_len = p - word_start; |
| 1488 | |
| 1489 | #define PROP_MATCH(STR) \ |
| 1490 | (word_len == strlen (STR) \ |
| 1491 | && memcmp (word_start, STR, strlen (STR)) == 0) |
| 1492 | #define PROP_SAVE(VAR, STR) \ |
| 1493 | (VAR = NILP (VAR) ? font_intern_prop (STR, strlen (STR), 1) : VAR) |
| 1494 | |
| 1495 | if (PROP_MATCH ("Ultra-Light")) |
| 1496 | PROP_SAVE (weight, "ultra-light"); |
| 1497 | else if (PROP_MATCH ("Light")) |
| 1498 | PROP_SAVE (weight, "light"); |
| 1499 | else if (PROP_MATCH ("Book")) |
| 1500 | PROP_SAVE (weight, "book"); |
| 1501 | else if (PROP_MATCH ("Medium")) |
| 1502 | PROP_SAVE (weight, "medium"); |
| 1503 | else if (PROP_MATCH ("Semi-Bold")) |
| 1504 | PROP_SAVE (weight, "semi-bold"); |
| 1505 | else if (PROP_MATCH ("Bold")) |
| 1506 | PROP_SAVE (weight, "bold"); |
| 1507 | else if (PROP_MATCH ("Italic")) |
| 1508 | PROP_SAVE (slant, "italic"); |
| 1509 | else if (PROP_MATCH ("Oblique")) |
| 1510 | PROP_SAVE (slant, "oblique"); |
| 1511 | else if (PROP_MATCH ("Semi-Condensed")) |
| 1512 | PROP_SAVE (width, "semi-condensed"); |
| 1513 | else if (PROP_MATCH ("Condensed")) |
| 1514 | PROP_SAVE (width, "condensed"); |
| 1515 | /* An unknown word must be part of the font name. */ |
| 1516 | else |
| 1517 | { |
| 1518 | family_end = p; |
| 1519 | break; |
| 1520 | } |
| 1521 | } |
| 1522 | #undef PROP_MATCH |
| 1523 | #undef PROP_SAVE |
| 1524 | |
| 1525 | if (family_end) |
| 1526 | ASET (font, FONT_FAMILY_INDEX, |
| 1527 | font_intern_prop (name, family_end - name, 1)); |
| 1528 | if (!NILP (size)) |
| 1529 | ASET (font, FONT_SIZE_INDEX, size); |
| 1530 | if (!NILP (weight)) |
| 1531 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, weight); |
| 1532 | if (!NILP (slant)) |
| 1533 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, slant); |
| 1534 | if (!NILP (width)) |
| 1535 | FONT_SET_STYLE (font, FONT_WIDTH_INDEX, width); |
| 1536 | } |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | /* Store fontconfig's font name of FONT (font-spec or font-entity) in |
| 1542 | NAME (NBYTES length), and return the name length. If |
| 1543 | FONT_SIZE_INDEX of FONT is 0, use PIXEL_SIZE instead. */ |
| 1544 | |
| 1545 | int |
| 1546 | font_unparse_fcname (Lisp_Object font, int pixel_size, char *name, int nbytes) |
| 1547 | { |
| 1548 | Lisp_Object family, foundry; |
| 1549 | Lisp_Object val; |
| 1550 | int point_size; |
| 1551 | int i; |
| 1552 | char *p; |
| 1553 | char *lim; |
| 1554 | Lisp_Object styles[3]; |
| 1555 | const char *style_names[3] = { "weight", "slant", "width" }; |
| 1556 | |
| 1557 | family = AREF (font, FONT_FAMILY_INDEX); |
| 1558 | if (! NILP (family)) |
| 1559 | { |
| 1560 | if (SYMBOLP (family)) |
| 1561 | family = SYMBOL_NAME (family); |
| 1562 | else |
| 1563 | family = Qnil; |
| 1564 | } |
| 1565 | |
| 1566 | val = AREF (font, FONT_SIZE_INDEX); |
| 1567 | if (INTEGERP (val)) |
| 1568 | { |
| 1569 | if (XINT (val) != 0) |
| 1570 | pixel_size = XINT (val); |
| 1571 | point_size = -1; |
| 1572 | } |
| 1573 | else |
| 1574 | { |
| 1575 | if (! FLOATP (val)) |
| 1576 | abort (); |
| 1577 | pixel_size = -1; |
| 1578 | point_size = (int) XFLOAT_DATA (val); |
| 1579 | } |
| 1580 | |
| 1581 | foundry = AREF (font, FONT_FOUNDRY_INDEX); |
| 1582 | if (! NILP (foundry)) |
| 1583 | { |
| 1584 | if (SYMBOLP (foundry)) |
| 1585 | foundry = SYMBOL_NAME (foundry); |
| 1586 | else |
| 1587 | foundry = Qnil; |
| 1588 | } |
| 1589 | |
| 1590 | for (i = 0; i < 3; i++) |
| 1591 | styles[i] = font_style_symbolic (font, FONT_WEIGHT_INDEX + i, 0); |
| 1592 | |
| 1593 | p = name; |
| 1594 | lim = name + nbytes; |
| 1595 | if (! NILP (family)) |
| 1596 | p += esnprintf (p, lim - p, "%s", SSDATA (family)); |
| 1597 | if (point_size > 0) |
| 1598 | p += esnprintf (p, lim - p, "-%d" + (p == name), point_size); |
| 1599 | else if (pixel_size > 0) |
| 1600 | p += esnprintf (p, lim - p, ":pixelsize=%d", pixel_size); |
| 1601 | if (! NILP (AREF (font, FONT_FOUNDRY_INDEX))) |
| 1602 | p += esnprintf (p, lim - p, ":foundry=%s", |
| 1603 | SSDATA (SYMBOL_NAME (AREF (font, |
| 1604 | FONT_FOUNDRY_INDEX)))); |
| 1605 | for (i = 0; i < 3; i++) |
| 1606 | if (! NILP (styles[i])) |
| 1607 | p += esnprintf (p, lim - p, ":%s=%s", style_names[i], |
| 1608 | SSDATA (SYMBOL_NAME (styles[i]))); |
| 1609 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1610 | p += esnprintf (p, lim - p, ":dpi=%"pI"d", |
| 1611 | XINT (AREF (font, FONT_DPI_INDEX))); |
| 1612 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1613 | p += esnprintf (p, lim - p, ":spacing=%"pI"d", |
| 1614 | XINT (AREF (font, FONT_SPACING_INDEX))); |
| 1615 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1616 | p += esnprintf (p, lim - p, |
| 1617 | (XINT (AREF (font, FONT_AVGWIDTH_INDEX)) == 0 |
| 1618 | ? ":scalable=true" |
| 1619 | : ":scalable=false")); |
| 1620 | return lim - p == 1 ? -1 : p - name; |
| 1621 | } |
| 1622 | |
| 1623 | /* Parse NAME (null terminated) and store information in FONT |
| 1624 | (font-spec or font-entity). If NAME is successfully parsed, return |
| 1625 | 0. Otherwise return -1. */ |
| 1626 | |
| 1627 | static int |
| 1628 | font_parse_name (char *name, Lisp_Object font) |
| 1629 | { |
| 1630 | if (name[0] == '-' || strchr (name, '*') || strchr (name, '?')) |
| 1631 | return font_parse_xlfd (name, font); |
| 1632 | return font_parse_fcname (name, font); |
| 1633 | } |
| 1634 | |
| 1635 | |
| 1636 | /* Merge FAMILY and REGISTRY into FONT_SPEC. FAMILY may have the form |
| 1637 | "FAMILY-FOUNDRY". REGISTRY may not contain charset-encoding |
| 1638 | part. */ |
| 1639 | |
| 1640 | void |
| 1641 | font_parse_family_registry (Lisp_Object family, Lisp_Object registry, Lisp_Object font_spec) |
| 1642 | { |
| 1643 | int len; |
| 1644 | char *p0, *p1; |
| 1645 | |
| 1646 | if (! NILP (family) |
| 1647 | && NILP (AREF (font_spec, FONT_FAMILY_INDEX))) |
| 1648 | { |
| 1649 | CHECK_STRING (family); |
| 1650 | len = SBYTES (family); |
| 1651 | p0 = SSDATA (family); |
| 1652 | p1 = strchr (p0, '-'); |
| 1653 | if (p1) |
| 1654 | { |
| 1655 | if ((*p0 != '*' && p1 - p0 > 0) |
| 1656 | && NILP (AREF (font_spec, FONT_FOUNDRY_INDEX))) |
| 1657 | Ffont_put (font_spec, QCfoundry, font_intern_prop (p0, p1 - p0, 1)); |
| 1658 | p1++; |
| 1659 | len -= p1 - p0; |
| 1660 | Ffont_put (font_spec, QCfamily, font_intern_prop (p1, len, 1)); |
| 1661 | } |
| 1662 | else |
| 1663 | ASET (font_spec, FONT_FAMILY_INDEX, Fintern (family, Qnil)); |
| 1664 | } |
| 1665 | if (! NILP (registry)) |
| 1666 | { |
| 1667 | /* Convert "XXX" and "XXX*" to "XXX*-*". */ |
| 1668 | CHECK_STRING (registry); |
| 1669 | len = SBYTES (registry); |
| 1670 | p0 = SSDATA (registry); |
| 1671 | p1 = strchr (p0, '-'); |
| 1672 | if (! p1) |
| 1673 | { |
| 1674 | if (SDATA (registry)[len - 1] == '*') |
| 1675 | registry = concat2 (registry, build_string ("-*")); |
| 1676 | else |
| 1677 | registry = concat2 (registry, build_string ("*-*")); |
| 1678 | } |
| 1679 | registry = Fdowncase (registry); |
| 1680 | ASET (font_spec, FONT_REGISTRY_INDEX, Fintern (registry, Qnil)); |
| 1681 | } |
| 1682 | } |
| 1683 | |
| 1684 | \f |
| 1685 | /* This part (through the next ^L) is still experimental and not |
| 1686 | tested much. We may drastically change codes. */ |
| 1687 | |
| 1688 | /* OTF handler */ |
| 1689 | |
| 1690 | #if 0 |
| 1691 | |
| 1692 | #define LGSTRING_HEADER_SIZE 6 |
| 1693 | #define LGSTRING_GLYPH_SIZE 8 |
| 1694 | |
| 1695 | static int |
| 1696 | check_gstring (Lisp_Object gstring) |
| 1697 | { |
| 1698 | Lisp_Object val; |
| 1699 | int i, j; |
| 1700 | |
| 1701 | CHECK_VECTOR (gstring); |
| 1702 | val = AREF (gstring, 0); |
| 1703 | CHECK_VECTOR (val); |
| 1704 | if (ASIZE (val) < LGSTRING_HEADER_SIZE) |
| 1705 | goto err; |
| 1706 | CHECK_FONT_OBJECT (LGSTRING_FONT (gstring)); |
| 1707 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING))) |
| 1708 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING)); |
| 1709 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING))) |
| 1710 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING)); |
| 1711 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH))) |
| 1712 | CHECK_NATNUM (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH)); |
| 1713 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1714 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1715 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1716 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1717 | |
| 1718 | for (i = 0; i < LGSTRING_GLYPH_LEN (gstring); i++) |
| 1719 | { |
| 1720 | val = LGSTRING_GLYPH (gstring, i); |
| 1721 | CHECK_VECTOR (val); |
| 1722 | if (ASIZE (val) < LGSTRING_GLYPH_SIZE) |
| 1723 | goto err; |
| 1724 | if (NILP (AREF (val, LGLYPH_IX_CHAR))) |
| 1725 | break; |
| 1726 | CHECK_NATNUM (AREF (val, LGLYPH_IX_FROM)); |
| 1727 | CHECK_NATNUM (AREF (val, LGLYPH_IX_TO)); |
| 1728 | CHECK_CHARACTER (AREF (val, LGLYPH_IX_CHAR)); |
| 1729 | if (!NILP (AREF (val, LGLYPH_IX_CODE))) |
| 1730 | CHECK_NATNUM (AREF (val, LGLYPH_IX_CODE)); |
| 1731 | if (!NILP (AREF (val, LGLYPH_IX_WIDTH))) |
| 1732 | CHECK_NATNUM (AREF (val, LGLYPH_IX_WIDTH)); |
| 1733 | if (!NILP (AREF (val, LGLYPH_IX_ADJUSTMENT))) |
| 1734 | { |
| 1735 | val = AREF (val, LGLYPH_IX_ADJUSTMENT); |
| 1736 | CHECK_VECTOR (val); |
| 1737 | if (ASIZE (val) < 3) |
| 1738 | goto err; |
| 1739 | for (j = 0; j < 3; j++) |
| 1740 | CHECK_NUMBER (AREF (val, j)); |
| 1741 | } |
| 1742 | } |
| 1743 | return i; |
| 1744 | err: |
| 1745 | error ("Invalid glyph-string format"); |
| 1746 | return -1; |
| 1747 | } |
| 1748 | |
| 1749 | static void |
| 1750 | check_otf_features (Lisp_Object otf_features) |
| 1751 | { |
| 1752 | Lisp_Object val; |
| 1753 | |
| 1754 | CHECK_CONS (otf_features); |
| 1755 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1756 | otf_features = XCDR (otf_features); |
| 1757 | CHECK_CONS (otf_features); |
| 1758 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1759 | otf_features = XCDR (otf_features); |
| 1760 | for (val = Fcar (otf_features); ! NILP (val); val = Fcdr (val)) |
| 1761 | { |
| 1762 | CHECK_SYMBOL (Fcar (val)); |
| 1763 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1764 | error ("Invalid OTF GSUB feature: %s", |
| 1765 | SDATA (SYMBOL_NAME (XCAR (val)))); |
| 1766 | } |
| 1767 | otf_features = XCDR (otf_features); |
| 1768 | for (val = Fcar (otf_features); ! NILP (val); val = Fcdr (val)) |
| 1769 | { |
| 1770 | CHECK_SYMBOL (Fcar (val)); |
| 1771 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1772 | error ("Invalid OTF GPOS feature: %s", |
| 1773 | SDATA (SYMBOL_NAME (XCAR (val)))); |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | #ifdef HAVE_LIBOTF |
| 1778 | #include <otf.h> |
| 1779 | |
| 1780 | Lisp_Object otf_list; |
| 1781 | |
| 1782 | static Lisp_Object |
| 1783 | otf_tag_symbol (OTF_Tag tag) |
| 1784 | { |
| 1785 | char name[5]; |
| 1786 | |
| 1787 | OTF_tag_name (tag, name); |
| 1788 | return Fintern (make_unibyte_string (name, 4), Qnil); |
| 1789 | } |
| 1790 | |
| 1791 | static OTF * |
| 1792 | otf_open (Lisp_Object file) |
| 1793 | { |
| 1794 | Lisp_Object val = Fassoc (file, otf_list); |
| 1795 | OTF *otf; |
| 1796 | |
| 1797 | if (! NILP (val)) |
| 1798 | otf = XSAVE_VALUE (XCDR (val))->pointer; |
| 1799 | else |
| 1800 | { |
| 1801 | otf = STRINGP (file) ? OTF_open (SSDATA (file)) : NULL; |
| 1802 | val = make_save_value (otf, 0); |
| 1803 | otf_list = Fcons (Fcons (file, val), otf_list); |
| 1804 | } |
| 1805 | return otf; |
| 1806 | } |
| 1807 | |
| 1808 | |
| 1809 | /* Return a list describing which scripts/languages FONT supports by |
| 1810 | which GSUB/GPOS features of OpenType tables. See the comment of |
| 1811 | (struct font_driver).otf_capability. */ |
| 1812 | |
| 1813 | Lisp_Object |
| 1814 | font_otf_capability (struct font *font) |
| 1815 | { |
| 1816 | OTF *otf; |
| 1817 | Lisp_Object capability = Fcons (Qnil, Qnil); |
| 1818 | int i; |
| 1819 | |
| 1820 | otf = otf_open (font->props[FONT_FILE_INDEX]); |
| 1821 | if (! otf) |
| 1822 | return Qnil; |
| 1823 | for (i = 0; i < 2; i++) |
| 1824 | { |
| 1825 | OTF_GSUB_GPOS *gsub_gpos; |
| 1826 | Lisp_Object script_list = Qnil; |
| 1827 | int j; |
| 1828 | |
| 1829 | if (OTF_get_features (otf, i == 0) < 0) |
| 1830 | continue; |
| 1831 | gsub_gpos = i == 0 ? otf->gsub : otf->gpos; |
| 1832 | for (j = gsub_gpos->ScriptList.ScriptCount - 1; j >= 0; j--) |
| 1833 | { |
| 1834 | OTF_Script *script = gsub_gpos->ScriptList.Script + j; |
| 1835 | Lisp_Object langsys_list = Qnil; |
| 1836 | Lisp_Object script_tag = otf_tag_symbol (script->ScriptTag); |
| 1837 | int k; |
| 1838 | |
| 1839 | for (k = script->LangSysCount; k >= 0; k--) |
| 1840 | { |
| 1841 | OTF_LangSys *langsys; |
| 1842 | Lisp_Object feature_list = Qnil; |
| 1843 | Lisp_Object langsys_tag; |
| 1844 | int l; |
| 1845 | |
| 1846 | if (k == script->LangSysCount) |
| 1847 | { |
| 1848 | langsys = &script->DefaultLangSys; |
| 1849 | langsys_tag = Qnil; |
| 1850 | } |
| 1851 | else |
| 1852 | { |
| 1853 | langsys = script->LangSys + k; |
| 1854 | langsys_tag |
| 1855 | = otf_tag_symbol (script->LangSysRecord[k].LangSysTag); |
| 1856 | } |
| 1857 | for (l = langsys->FeatureCount - 1; l >= 0; l--) |
| 1858 | { |
| 1859 | OTF_Feature *feature |
| 1860 | = gsub_gpos->FeatureList.Feature + langsys->FeatureIndex[l]; |
| 1861 | Lisp_Object feature_tag |
| 1862 | = otf_tag_symbol (feature->FeatureTag); |
| 1863 | |
| 1864 | feature_list = Fcons (feature_tag, feature_list); |
| 1865 | } |
| 1866 | langsys_list = Fcons (Fcons (langsys_tag, feature_list), |
| 1867 | langsys_list); |
| 1868 | } |
| 1869 | script_list = Fcons (Fcons (script_tag, langsys_list), |
| 1870 | script_list); |
| 1871 | } |
| 1872 | |
| 1873 | if (i == 0) |
| 1874 | XSETCAR (capability, script_list); |
| 1875 | else |
| 1876 | XSETCDR (capability, script_list); |
| 1877 | } |
| 1878 | |
| 1879 | return capability; |
| 1880 | } |
| 1881 | |
| 1882 | /* Parse OTF features in SPEC and write a proper features spec string |
| 1883 | in FEATURES for the call of OTF_drive_gsub/gpos (of libotf). It is |
| 1884 | assured that the sufficient memory has already allocated for |
| 1885 | FEATURES. */ |
| 1886 | |
| 1887 | static void |
| 1888 | generate_otf_features (Lisp_Object spec, char *features) |
| 1889 | { |
| 1890 | Lisp_Object val; |
| 1891 | char *p; |
| 1892 | int asterisk; |
| 1893 | |
| 1894 | p = features; |
| 1895 | *p = '\0'; |
| 1896 | for (asterisk = 0; CONSP (spec); spec = XCDR (spec)) |
| 1897 | { |
| 1898 | val = XCAR (spec); |
| 1899 | CHECK_SYMBOL (val); |
| 1900 | if (p > features) |
| 1901 | *p++ = ','; |
| 1902 | if (SREF (SYMBOL_NAME (val), 0) == '*') |
| 1903 | { |
| 1904 | asterisk = 1; |
| 1905 | *p++ = '*'; |
| 1906 | } |
| 1907 | else if (! asterisk) |
| 1908 | { |
| 1909 | val = SYMBOL_NAME (val); |
| 1910 | p += esprintf (p, "%s", SDATA (val)); |
| 1911 | } |
| 1912 | else |
| 1913 | { |
| 1914 | val = SYMBOL_NAME (val); |
| 1915 | p += esprintf (p, "~%s", SDATA (val)); |
| 1916 | } |
| 1917 | } |
| 1918 | if (CONSP (spec)) |
| 1919 | error ("OTF spec too long"); |
| 1920 | } |
| 1921 | |
| 1922 | Lisp_Object |
| 1923 | font_otf_DeviceTable (OTF_DeviceTable *device_table) |
| 1924 | { |
| 1925 | int len = device_table->StartSize - device_table->EndSize + 1; |
| 1926 | |
| 1927 | return Fcons (make_number (len), |
| 1928 | make_unibyte_string (device_table->DeltaValue, len)); |
| 1929 | } |
| 1930 | |
| 1931 | Lisp_Object |
| 1932 | font_otf_ValueRecord (int value_format, OTF_ValueRecord *value_record) |
| 1933 | { |
| 1934 | Lisp_Object val = Fmake_vector (make_number (8), Qnil); |
| 1935 | |
| 1936 | if (value_format & OTF_XPlacement) |
| 1937 | ASET (val, 0, make_number (value_record->XPlacement)); |
| 1938 | if (value_format & OTF_YPlacement) |
| 1939 | ASET (val, 1, make_number (value_record->YPlacement)); |
| 1940 | if (value_format & OTF_XAdvance) |
| 1941 | ASET (val, 2, make_number (value_record->XAdvance)); |
| 1942 | if (value_format & OTF_YAdvance) |
| 1943 | ASET (val, 3, make_number (value_record->YAdvance)); |
| 1944 | if (value_format & OTF_XPlaDevice) |
| 1945 | ASET (val, 4, font_otf_DeviceTable (&value_record->XPlaDevice)); |
| 1946 | if (value_format & OTF_YPlaDevice) |
| 1947 | ASET (val, 4, font_otf_DeviceTable (&value_record->YPlaDevice)); |
| 1948 | if (value_format & OTF_XAdvDevice) |
| 1949 | ASET (val, 4, font_otf_DeviceTable (&value_record->XAdvDevice)); |
| 1950 | if (value_format & OTF_YAdvDevice) |
| 1951 | ASET (val, 4, font_otf_DeviceTable (&value_record->YAdvDevice)); |
| 1952 | return val; |
| 1953 | } |
| 1954 | |
| 1955 | Lisp_Object |
| 1956 | font_otf_Anchor (OTF_Anchor *anchor) |
| 1957 | { |
| 1958 | Lisp_Object val; |
| 1959 | |
| 1960 | val = Fmake_vector (make_number (anchor->AnchorFormat + 1), Qnil); |
| 1961 | ASET (val, 0, make_number (anchor->XCoordinate)); |
| 1962 | ASET (val, 1, make_number (anchor->YCoordinate)); |
| 1963 | if (anchor->AnchorFormat == 2) |
| 1964 | ASET (val, 2, make_number (anchor->f.f1.AnchorPoint)); |
| 1965 | else |
| 1966 | { |
| 1967 | ASET (val, 3, font_otf_DeviceTable (&anchor->f.f2.XDeviceTable)); |
| 1968 | ASET (val, 4, font_otf_DeviceTable (&anchor->f.f2.YDeviceTable)); |
| 1969 | } |
| 1970 | return val; |
| 1971 | } |
| 1972 | #endif /* HAVE_LIBOTF */ |
| 1973 | #endif /* 0 */ |
| 1974 | |
| 1975 | \f |
| 1976 | /* Font sorting */ |
| 1977 | |
| 1978 | static unsigned font_score (Lisp_Object, Lisp_Object *); |
| 1979 | static int font_compare (const void *, const void *); |
| 1980 | static Lisp_Object font_sort_entities (Lisp_Object, Lisp_Object, |
| 1981 | Lisp_Object, int); |
| 1982 | |
| 1983 | static double |
| 1984 | font_rescale_ratio (Lisp_Object font_entity) |
| 1985 | { |
| 1986 | Lisp_Object tail, elt; |
| 1987 | Lisp_Object name = Qnil; |
| 1988 | |
| 1989 | for (tail = Vface_font_rescale_alist; CONSP (tail); tail = XCDR (tail)) |
| 1990 | { |
| 1991 | elt = XCAR (tail); |
| 1992 | if (FLOATP (XCDR (elt))) |
| 1993 | { |
| 1994 | if (STRINGP (XCAR (elt))) |
| 1995 | { |
| 1996 | if (NILP (name)) |
| 1997 | name = Ffont_xlfd_name (font_entity, Qnil); |
| 1998 | if (fast_string_match_ignore_case (XCAR (elt), name) >= 0) |
| 1999 | return XFLOAT_DATA (XCDR (elt)); |
| 2000 | } |
| 2001 | else if (FONT_SPEC_P (XCAR (elt))) |
| 2002 | { |
| 2003 | if (font_match_p (XCAR (elt), font_entity)) |
| 2004 | return XFLOAT_DATA (XCDR (elt)); |
| 2005 | } |
| 2006 | } |
| 2007 | } |
| 2008 | return 1.0; |
| 2009 | } |
| 2010 | |
| 2011 | /* We sort fonts by scoring each of them against a specified |
| 2012 | font-spec. The score value is 32 bit (`unsigned'), and the smaller |
| 2013 | the value is, the closer the font is to the font-spec. |
| 2014 | |
| 2015 | The lowest 2 bits of the score are used for driver type. The font |
| 2016 | available by the most preferred font driver is 0. |
| 2017 | |
| 2018 | The 4 7-bit fields in the higher 28 bits are used for numeric properties |
| 2019 | WEIGHT, SLANT, WIDTH, and SIZE. */ |
| 2020 | |
| 2021 | /* How many bits to shift to store the difference value of each font |
| 2022 | property in a score. Note that floats for FONT_TYPE_INDEX and |
| 2023 | FONT_REGISTRY_INDEX are not used. */ |
| 2024 | static int sort_shift_bits[FONT_SIZE_INDEX + 1]; |
| 2025 | |
| 2026 | /* Score font-entity ENTITY against properties of font-spec SPEC_PROP. |
| 2027 | The return value indicates how different ENTITY is compared with |
| 2028 | SPEC_PROP. */ |
| 2029 | |
| 2030 | static unsigned |
| 2031 | font_score (Lisp_Object entity, Lisp_Object *spec_prop) |
| 2032 | { |
| 2033 | unsigned score = 0; |
| 2034 | int i; |
| 2035 | |
| 2036 | /* Score three style numeric fields. Maximum difference is 127. */ |
| 2037 | for (i = FONT_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; i++) |
| 2038 | if (! NILP (spec_prop[i]) && ! EQ (AREF (entity, i), spec_prop[i])) |
| 2039 | { |
| 2040 | EMACS_INT diff = ((XINT (AREF (entity, i)) >> 8) |
| 2041 | - (XINT (spec_prop[i]) >> 8)); |
| 2042 | if (diff < 0) |
| 2043 | diff = - diff; |
| 2044 | score |= min (diff, 127) << sort_shift_bits[i]; |
| 2045 | } |
| 2046 | |
| 2047 | /* Score the size. Maximum difference is 127. */ |
| 2048 | i = FONT_SIZE_INDEX; |
| 2049 | if (! NILP (spec_prop[FONT_SIZE_INDEX]) |
| 2050 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 2051 | { |
| 2052 | /* We use the higher 6-bit for the actual size difference. The |
| 2053 | lowest bit is set if the DPI is different. */ |
| 2054 | EMACS_INT diff; |
| 2055 | EMACS_INT pixel_size = XINT (spec_prop[FONT_SIZE_INDEX]); |
| 2056 | |
| 2057 | if (CONSP (Vface_font_rescale_alist)) |
| 2058 | pixel_size *= font_rescale_ratio (entity); |
| 2059 | diff = pixel_size - XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 2060 | if (diff < 0) |
| 2061 | diff = - diff; |
| 2062 | diff <<= 1; |
| 2063 | if (! NILP (spec_prop[FONT_DPI_INDEX]) |
| 2064 | && ! EQ (spec_prop[FONT_DPI_INDEX], AREF (entity, FONT_DPI_INDEX))) |
| 2065 | diff |= 1; |
| 2066 | if (! NILP (spec_prop[FONT_AVGWIDTH_INDEX]) |
| 2067 | && ! EQ (spec_prop[FONT_AVGWIDTH_INDEX], AREF (entity, FONT_AVGWIDTH_INDEX))) |
| 2068 | diff |= 1; |
| 2069 | score |= min (diff, 127) << sort_shift_bits[FONT_SIZE_INDEX]; |
| 2070 | } |
| 2071 | |
| 2072 | return score; |
| 2073 | } |
| 2074 | |
| 2075 | |
| 2076 | /* Concatenate all elements of LIST into one vector. LIST is a list |
| 2077 | of font-entity vectors. */ |
| 2078 | |
| 2079 | static Lisp_Object |
| 2080 | font_vconcat_entity_vectors (Lisp_Object list) |
| 2081 | { |
| 2082 | int nargs = XINT (Flength (list)); |
| 2083 | Lisp_Object *args = alloca (sizeof (Lisp_Object) * nargs); |
| 2084 | int i; |
| 2085 | |
| 2086 | for (i = 0; i < nargs; i++, list = XCDR (list)) |
| 2087 | args[i] = XCAR (list); |
| 2088 | return Fvconcat (nargs, args); |
| 2089 | } |
| 2090 | |
| 2091 | |
| 2092 | /* The structure for elements being sorted by qsort. */ |
| 2093 | struct font_sort_data |
| 2094 | { |
| 2095 | unsigned score; |
| 2096 | int font_driver_preference; |
| 2097 | Lisp_Object entity; |
| 2098 | }; |
| 2099 | |
| 2100 | |
| 2101 | /* The comparison function for qsort. */ |
| 2102 | |
| 2103 | static int |
| 2104 | font_compare (const void *d1, const void *d2) |
| 2105 | { |
| 2106 | const struct font_sort_data *data1 = d1; |
| 2107 | const struct font_sort_data *data2 = d2; |
| 2108 | |
| 2109 | if (data1->score < data2->score) |
| 2110 | return -1; |
| 2111 | else if (data1->score > data2->score) |
| 2112 | return 1; |
| 2113 | return (data1->font_driver_preference - data2->font_driver_preference); |
| 2114 | } |
| 2115 | |
| 2116 | |
| 2117 | /* Sort each font-entity vector in LIST by closeness to font-spec PREFER. |
| 2118 | If PREFER specifies a point-size, calculate the corresponding |
| 2119 | pixel-size from QCdpi property of PREFER or from the Y-resolution |
| 2120 | of FRAME before sorting. |
| 2121 | |
| 2122 | If BEST-ONLY is nonzero, return the best matching entity (that |
| 2123 | supports the character BEST-ONLY if BEST-ONLY is positive, or any |
| 2124 | if BEST-ONLY is negative). Otherwise, return the sorted result as |
| 2125 | a single vector of font-entities. |
| 2126 | |
| 2127 | This function does no optimization for the case that the total |
| 2128 | number of elements is 1. The caller should avoid calling this in |
| 2129 | such a case. */ |
| 2130 | |
| 2131 | static Lisp_Object |
| 2132 | font_sort_entities (Lisp_Object list, Lisp_Object prefer, Lisp_Object frame, int best_only) |
| 2133 | { |
| 2134 | Lisp_Object prefer_prop[FONT_SPEC_MAX]; |
| 2135 | int len, maxlen, i; |
| 2136 | struct font_sort_data *data; |
| 2137 | unsigned best_score; |
| 2138 | Lisp_Object best_entity; |
| 2139 | struct frame *f = XFRAME (frame); |
| 2140 | Lisp_Object tail, vec IF_LINT (= Qnil); |
| 2141 | USE_SAFE_ALLOCA; |
| 2142 | |
| 2143 | for (i = FONT_WEIGHT_INDEX; i <= FONT_AVGWIDTH_INDEX; i++) |
| 2144 | prefer_prop[i] = AREF (prefer, i); |
| 2145 | if (FLOATP (prefer_prop[FONT_SIZE_INDEX])) |
| 2146 | prefer_prop[FONT_SIZE_INDEX] |
| 2147 | = make_number (font_pixel_size (XFRAME (frame), prefer)); |
| 2148 | |
| 2149 | if (NILP (XCDR (list))) |
| 2150 | { |
| 2151 | /* What we have to take care of is this single vector. */ |
| 2152 | vec = XCAR (list); |
| 2153 | maxlen = ASIZE (vec); |
| 2154 | } |
| 2155 | else if (best_only) |
| 2156 | { |
| 2157 | /* We don't have to perform sort, so there's no need of creating |
| 2158 | a single vector. But, we must find the length of the longest |
| 2159 | vector. */ |
| 2160 | maxlen = 0; |
| 2161 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
| 2162 | if (maxlen < ASIZE (XCAR (tail))) |
| 2163 | maxlen = ASIZE (XCAR (tail)); |
| 2164 | } |
| 2165 | else |
| 2166 | { |
| 2167 | /* We have to create a single vector to sort it. */ |
| 2168 | vec = font_vconcat_entity_vectors (list); |
| 2169 | maxlen = ASIZE (vec); |
| 2170 | } |
| 2171 | |
| 2172 | SAFE_ALLOCA (data, struct font_sort_data *, (sizeof *data) * maxlen); |
| 2173 | best_score = 0xFFFFFFFF; |
| 2174 | best_entity = Qnil; |
| 2175 | |
| 2176 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
| 2177 | { |
| 2178 | int font_driver_preference = 0; |
| 2179 | Lisp_Object current_font_driver; |
| 2180 | |
| 2181 | if (best_only) |
| 2182 | vec = XCAR (tail); |
| 2183 | len = ASIZE (vec); |
| 2184 | |
| 2185 | /* We are sure that the length of VEC > 0. */ |
| 2186 | current_font_driver = AREF (AREF (vec, 0), FONT_TYPE_INDEX); |
| 2187 | /* Score the elements. */ |
| 2188 | for (i = 0; i < len; i++) |
| 2189 | { |
| 2190 | data[i].entity = AREF (vec, i); |
| 2191 | data[i].score |
| 2192 | = ((best_only <= 0 || font_has_char (f, data[i].entity, best_only) |
| 2193 | > 0) |
| 2194 | ? font_score (data[i].entity, prefer_prop) |
| 2195 | : 0xFFFFFFFF); |
| 2196 | if (best_only && best_score > data[i].score) |
| 2197 | { |
| 2198 | best_score = data[i].score; |
| 2199 | best_entity = data[i].entity; |
| 2200 | if (best_score == 0) |
| 2201 | break; |
| 2202 | } |
| 2203 | if (! EQ (current_font_driver, AREF (AREF (vec, i), FONT_TYPE_INDEX))) |
| 2204 | { |
| 2205 | current_font_driver = AREF (AREF (vec, i), FONT_TYPE_INDEX); |
| 2206 | font_driver_preference++; |
| 2207 | } |
| 2208 | data[i].font_driver_preference = font_driver_preference; |
| 2209 | } |
| 2210 | |
| 2211 | /* Sort if necessary. */ |
| 2212 | if (! best_only) |
| 2213 | { |
| 2214 | qsort (data, len, sizeof *data, font_compare); |
| 2215 | for (i = 0; i < len; i++) |
| 2216 | ASET (vec, i, data[i].entity); |
| 2217 | break; |
| 2218 | } |
| 2219 | else |
| 2220 | vec = best_entity; |
| 2221 | } |
| 2222 | |
| 2223 | SAFE_FREE (); |
| 2224 | |
| 2225 | FONT_ADD_LOG ("sort-by", prefer, vec); |
| 2226 | return vec; |
| 2227 | } |
| 2228 | |
| 2229 | \f |
| 2230 | /* API of Font Service Layer. */ |
| 2231 | |
| 2232 | /* Reflect ORDER (see the variable font_sort_order in xfaces.c) to |
| 2233 | sort_shift_bits. Finternal_set_font_selection_order calls this |
| 2234 | function with font_sort_order after setting up it. */ |
| 2235 | |
| 2236 | void |
| 2237 | font_update_sort_order (int *order) |
| 2238 | { |
| 2239 | int i, shift_bits; |
| 2240 | |
| 2241 | for (i = 0, shift_bits = 23; i < 4; i++, shift_bits -= 7) |
| 2242 | { |
| 2243 | int xlfd_idx = order[i]; |
| 2244 | |
| 2245 | if (xlfd_idx == XLFD_WEIGHT_INDEX) |
| 2246 | sort_shift_bits[FONT_WEIGHT_INDEX] = shift_bits; |
| 2247 | else if (xlfd_idx == XLFD_SLANT_INDEX) |
| 2248 | sort_shift_bits[FONT_SLANT_INDEX] = shift_bits; |
| 2249 | else if (xlfd_idx == XLFD_SWIDTH_INDEX) |
| 2250 | sort_shift_bits[FONT_WIDTH_INDEX] = shift_bits; |
| 2251 | else |
| 2252 | sort_shift_bits[FONT_SIZE_INDEX] = shift_bits; |
| 2253 | } |
| 2254 | } |
| 2255 | |
| 2256 | static int |
| 2257 | font_check_otf_features (Lisp_Object script, Lisp_Object langsys, Lisp_Object features, Lisp_Object table) |
| 2258 | { |
| 2259 | Lisp_Object val; |
| 2260 | int negative; |
| 2261 | |
| 2262 | table = assq_no_quit (script, table); |
| 2263 | if (NILP (table)) |
| 2264 | return 0; |
| 2265 | table = XCDR (table); |
| 2266 | if (! NILP (langsys)) |
| 2267 | { |
| 2268 | table = assq_no_quit (langsys, table); |
| 2269 | if (NILP (table)) |
| 2270 | return 0; |
| 2271 | } |
| 2272 | else |
| 2273 | { |
| 2274 | val = assq_no_quit (Qnil, table); |
| 2275 | if (NILP (val)) |
| 2276 | table = XCAR (table); |
| 2277 | else |
| 2278 | table = val; |
| 2279 | } |
| 2280 | table = XCDR (table); |
| 2281 | for (negative = 0; CONSP (features); features = XCDR (features)) |
| 2282 | { |
| 2283 | if (NILP (XCAR (features))) |
| 2284 | { |
| 2285 | negative = 1; |
| 2286 | continue; |
| 2287 | } |
| 2288 | if (NILP (Fmemq (XCAR (features), table)) != negative) |
| 2289 | return 0; |
| 2290 | } |
| 2291 | return 1; |
| 2292 | } |
| 2293 | |
| 2294 | /* Check if OTF_CAPABILITY satisfies SPEC (otf-spec). */ |
| 2295 | |
| 2296 | static int |
| 2297 | font_check_otf (Lisp_Object spec, Lisp_Object otf_capability) |
| 2298 | { |
| 2299 | Lisp_Object script, langsys = Qnil, gsub = Qnil, gpos = Qnil; |
| 2300 | |
| 2301 | script = XCAR (spec); |
| 2302 | spec = XCDR (spec); |
| 2303 | if (! NILP (spec)) |
| 2304 | { |
| 2305 | langsys = XCAR (spec); |
| 2306 | spec = XCDR (spec); |
| 2307 | if (! NILP (spec)) |
| 2308 | { |
| 2309 | gsub = XCAR (spec); |
| 2310 | spec = XCDR (spec); |
| 2311 | if (! NILP (spec)) |
| 2312 | gpos = XCAR (spec); |
| 2313 | } |
| 2314 | } |
| 2315 | |
| 2316 | if (! NILP (gsub) && ! font_check_otf_features (script, langsys, gsub, |
| 2317 | XCAR (otf_capability))) |
| 2318 | return 0; |
| 2319 | if (! NILP (gpos) && ! font_check_otf_features (script, langsys, gpos, |
| 2320 | XCDR (otf_capability))) |
| 2321 | return 0; |
| 2322 | return 1; |
| 2323 | } |
| 2324 | |
| 2325 | |
| 2326 | |
| 2327 | /* Check if FONT (font-entity or font-object) matches with the font |
| 2328 | specification SPEC. */ |
| 2329 | |
| 2330 | int |
| 2331 | font_match_p (Lisp_Object spec, Lisp_Object font) |
| 2332 | { |
| 2333 | Lisp_Object prop[FONT_SPEC_MAX], *props; |
| 2334 | Lisp_Object extra, font_extra; |
| 2335 | int i; |
| 2336 | |
| 2337 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
| 2338 | if (! NILP (AREF (spec, i)) |
| 2339 | && ! NILP (AREF (font, i)) |
| 2340 | && ! EQ (AREF (spec, i), AREF (font, i))) |
| 2341 | return 0; |
| 2342 | props = XFONT_SPEC (spec)->props; |
| 2343 | if (FLOATP (props[FONT_SIZE_INDEX])) |
| 2344 | { |
| 2345 | for (i = FONT_FOUNDRY_INDEX; i < FONT_SIZE_INDEX; i++) |
| 2346 | prop[i] = AREF (spec, i); |
| 2347 | prop[FONT_SIZE_INDEX] |
| 2348 | = make_number (font_pixel_size (XFRAME (selected_frame), spec)); |
| 2349 | props = prop; |
| 2350 | } |
| 2351 | |
| 2352 | if (font_score (font, props) > 0) |
| 2353 | return 0; |
| 2354 | extra = AREF (spec, FONT_EXTRA_INDEX); |
| 2355 | font_extra = AREF (font, FONT_EXTRA_INDEX); |
| 2356 | for (; CONSP (extra); extra = XCDR (extra)) |
| 2357 | { |
| 2358 | Lisp_Object key = XCAR (XCAR (extra)); |
| 2359 | Lisp_Object val = XCDR (XCAR (extra)), val2; |
| 2360 | |
| 2361 | if (EQ (key, QClang)) |
| 2362 | { |
| 2363 | val2 = assq_no_quit (key, font_extra); |
| 2364 | if (NILP (val2)) |
| 2365 | return 0; |
| 2366 | val2 = XCDR (val2); |
| 2367 | if (CONSP (val)) |
| 2368 | { |
| 2369 | if (! CONSP (val2)) |
| 2370 | return 0; |
| 2371 | while (CONSP (val)) |
| 2372 | if (NILP (Fmemq (val, val2))) |
| 2373 | return 0; |
| 2374 | } |
| 2375 | else |
| 2376 | if (CONSP (val2) |
| 2377 | ? NILP (Fmemq (val, XCDR (val2))) |
| 2378 | : ! EQ (val, val2)) |
| 2379 | return 0; |
| 2380 | } |
| 2381 | else if (EQ (key, QCscript)) |
| 2382 | { |
| 2383 | val2 = assq_no_quit (val, Vscript_representative_chars); |
| 2384 | if (CONSP (val2)) |
| 2385 | { |
| 2386 | val2 = XCDR (val2); |
| 2387 | if (CONSP (val2)) |
| 2388 | { |
| 2389 | /* All characters in the list must be supported. */ |
| 2390 | for (; CONSP (val2); val2 = XCDR (val2)) |
| 2391 | { |
| 2392 | if (! NATNUMP (XCAR (val2))) |
| 2393 | continue; |
| 2394 | if (font_encode_char (font, XFASTINT (XCAR (val2))) |
| 2395 | == FONT_INVALID_CODE) |
| 2396 | return 0; |
| 2397 | } |
| 2398 | } |
| 2399 | else if (VECTORP (val2)) |
| 2400 | { |
| 2401 | /* At most one character in the vector must be supported. */ |
| 2402 | for (i = 0; i < ASIZE (val2); i++) |
| 2403 | { |
| 2404 | if (! NATNUMP (AREF (val2, i))) |
| 2405 | continue; |
| 2406 | if (font_encode_char (font, XFASTINT (AREF (val2, i))) |
| 2407 | != FONT_INVALID_CODE) |
| 2408 | break; |
| 2409 | } |
| 2410 | if (i == ASIZE (val2)) |
| 2411 | return 0; |
| 2412 | } |
| 2413 | } |
| 2414 | } |
| 2415 | else if (EQ (key, QCotf)) |
| 2416 | { |
| 2417 | struct font *fontp; |
| 2418 | |
| 2419 | if (! FONT_OBJECT_P (font)) |
| 2420 | return 0; |
| 2421 | fontp = XFONT_OBJECT (font); |
| 2422 | if (! fontp->driver->otf_capability) |
| 2423 | return 0; |
| 2424 | val2 = fontp->driver->otf_capability (fontp); |
| 2425 | if (NILP (val2) || ! font_check_otf (val, val2)) |
| 2426 | return 0; |
| 2427 | } |
| 2428 | } |
| 2429 | |
| 2430 | return 1; |
| 2431 | } |
| 2432 | \f |
| 2433 | |
| 2434 | /* Font cache |
| 2435 | |
| 2436 | Each font backend has the callback function get_cache, and it |
| 2437 | returns a cons cell of which cdr part can be freely used for |
| 2438 | caching fonts. The cons cell may be shared by multiple frames |
| 2439 | and/or multiple font drivers. So, we arrange the cdr part as this: |
| 2440 | |
| 2441 | ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) |
| 2442 | |
| 2443 | where DRIVER-TYPE is a symbol such as `x', `xft', etc., NUM-FRAMES |
| 2444 | is a number frames sharing this cache, and FONT-CACHE-DATA is a |
| 2445 | cons (FONT-SPEC FONT-ENTITY ...). */ |
| 2446 | |
| 2447 | static void font_prepare_cache (FRAME_PTR, struct font_driver *); |
| 2448 | static void font_finish_cache (FRAME_PTR, struct font_driver *); |
| 2449 | static Lisp_Object font_get_cache (FRAME_PTR, struct font_driver *); |
| 2450 | static void font_clear_cache (FRAME_PTR, Lisp_Object, |
| 2451 | struct font_driver *); |
| 2452 | |
| 2453 | static void |
| 2454 | font_prepare_cache (FRAME_PTR f, struct font_driver *driver) |
| 2455 | { |
| 2456 | Lisp_Object cache, val; |
| 2457 | |
| 2458 | cache = driver->get_cache (f); |
| 2459 | val = XCDR (cache); |
| 2460 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2461 | val = XCDR (val); |
| 2462 | if (NILP (val)) |
| 2463 | { |
| 2464 | val = Fcons (driver->type, Fcons (make_number (1), Qnil)); |
| 2465 | XSETCDR (cache, Fcons (val, XCDR (cache))); |
| 2466 | } |
| 2467 | else |
| 2468 | { |
| 2469 | val = XCDR (XCAR (val)); |
| 2470 | XSETCAR (val, make_number (XINT (XCAR (val)) + 1)); |
| 2471 | } |
| 2472 | } |
| 2473 | |
| 2474 | |
| 2475 | static void |
| 2476 | font_finish_cache (FRAME_PTR f, struct font_driver *driver) |
| 2477 | { |
| 2478 | Lisp_Object cache, val, tmp; |
| 2479 | |
| 2480 | |
| 2481 | cache = driver->get_cache (f); |
| 2482 | val = XCDR (cache); |
| 2483 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2484 | cache = val, val = XCDR (val); |
| 2485 | font_assert (! NILP (val)); |
| 2486 | tmp = XCDR (XCAR (val)); |
| 2487 | XSETCAR (tmp, make_number (XINT (XCAR (tmp)) - 1)); |
| 2488 | if (XINT (XCAR (tmp)) == 0) |
| 2489 | { |
| 2490 | font_clear_cache (f, XCAR (val), driver); |
| 2491 | XSETCDR (cache, XCDR (val)); |
| 2492 | } |
| 2493 | } |
| 2494 | |
| 2495 | |
| 2496 | static Lisp_Object |
| 2497 | font_get_cache (FRAME_PTR f, struct font_driver *driver) |
| 2498 | { |
| 2499 | Lisp_Object val = driver->get_cache (f); |
| 2500 | Lisp_Object type = driver->type; |
| 2501 | |
| 2502 | font_assert (CONSP (val)); |
| 2503 | for (val = XCDR (val); ! EQ (XCAR (XCAR (val)), type); val = XCDR (val)); |
| 2504 | font_assert (CONSP (val)); |
| 2505 | /* VAL = ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) */ |
| 2506 | val = XCDR (XCAR (val)); |
| 2507 | return val; |
| 2508 | } |
| 2509 | |
| 2510 | static int num_fonts; |
| 2511 | |
| 2512 | static void |
| 2513 | font_clear_cache (FRAME_PTR f, Lisp_Object cache, struct font_driver *driver) |
| 2514 | { |
| 2515 | Lisp_Object tail, elt; |
| 2516 | Lisp_Object tail2, entity; |
| 2517 | |
| 2518 | /* CACHE = (DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) */ |
| 2519 | for (tail = XCDR (XCDR (cache)); CONSP (tail); tail = XCDR (tail)) |
| 2520 | { |
| 2521 | elt = XCAR (tail); |
| 2522 | /* elt should have the form (FONT-SPEC FONT-ENTITY ...) */ |
| 2523 | if (CONSP (elt) && FONT_SPEC_P (XCAR (elt))) |
| 2524 | { |
| 2525 | for (tail2 = XCDR (elt); CONSP (tail2); tail2 = XCDR (tail2)) |
| 2526 | { |
| 2527 | entity = XCAR (tail2); |
| 2528 | |
| 2529 | if (FONT_ENTITY_P (entity) |
| 2530 | && EQ (driver->type, AREF (entity, FONT_TYPE_INDEX))) |
| 2531 | { |
| 2532 | Lisp_Object objlist = AREF (entity, FONT_OBJLIST_INDEX); |
| 2533 | |
| 2534 | for (; CONSP (objlist); objlist = XCDR (objlist)) |
| 2535 | { |
| 2536 | Lisp_Object val = XCAR (objlist); |
| 2537 | struct font *font = XFONT_OBJECT (val); |
| 2538 | |
| 2539 | if (! NILP (AREF (val, FONT_TYPE_INDEX))) |
| 2540 | { |
| 2541 | font_assert (font && driver == font->driver); |
| 2542 | driver->close (f, font); |
| 2543 | num_fonts--; |
| 2544 | } |
| 2545 | } |
| 2546 | if (driver->free_entity) |
| 2547 | driver->free_entity (entity); |
| 2548 | } |
| 2549 | } |
| 2550 | } |
| 2551 | } |
| 2552 | XSETCDR (cache, Qnil); |
| 2553 | } |
| 2554 | \f |
| 2555 | |
| 2556 | static Lisp_Object scratch_font_spec, scratch_font_prefer; |
| 2557 | |
| 2558 | /* Check each font-entity in VEC, and return a list of font-entities |
| 2559 | that satisfy these conditions: |
| 2560 | (1) matches with SPEC and SIZE if SPEC is not nil, and |
| 2561 | (2) doesn't match with any regexps in Vface_ignored_fonts (if non-nil). |
| 2562 | */ |
| 2563 | |
| 2564 | static Lisp_Object |
| 2565 | font_delete_unmatched (Lisp_Object vec, Lisp_Object spec, int size) |
| 2566 | { |
| 2567 | Lisp_Object entity, val; |
| 2568 | enum font_property_index prop; |
| 2569 | int i; |
| 2570 | |
| 2571 | for (val = Qnil, i = ASIZE (vec) - 1; i >= 0; i--) |
| 2572 | { |
| 2573 | entity = AREF (vec, i); |
| 2574 | if (! NILP (Vface_ignored_fonts)) |
| 2575 | { |
| 2576 | char name[256]; |
| 2577 | Lisp_Object tail, regexp; |
| 2578 | |
| 2579 | if (font_unparse_xlfd (entity, 0, name, 256) >= 0) |
| 2580 | { |
| 2581 | for (tail = Vface_ignored_fonts; CONSP (tail); tail = XCDR (tail)) |
| 2582 | { |
| 2583 | regexp = XCAR (tail); |
| 2584 | if (STRINGP (regexp) |
| 2585 | && fast_c_string_match_ignore_case (regexp, name) >= 0) |
| 2586 | break; |
| 2587 | } |
| 2588 | if (CONSP (tail)) |
| 2589 | continue; |
| 2590 | } |
| 2591 | } |
| 2592 | if (NILP (spec)) |
| 2593 | { |
| 2594 | val = Fcons (entity, val); |
| 2595 | continue; |
| 2596 | } |
| 2597 | for (prop = FONT_WEIGHT_INDEX; prop < FONT_SIZE_INDEX; prop++) |
| 2598 | if (INTEGERP (AREF (spec, prop)) |
| 2599 | && ((XINT (AREF (spec, prop)) >> 8) |
| 2600 | != (XINT (AREF (entity, prop)) >> 8))) |
| 2601 | prop = FONT_SPEC_MAX; |
| 2602 | if (prop < FONT_SPEC_MAX |
| 2603 | && size |
| 2604 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 2605 | { |
| 2606 | int diff = XINT (AREF (entity, FONT_SIZE_INDEX)) - size; |
| 2607 | |
| 2608 | if (diff != 0 |
| 2609 | && (diff < 0 ? -diff > FONT_PIXEL_SIZE_QUANTUM |
| 2610 | : diff > FONT_PIXEL_SIZE_QUANTUM)) |
| 2611 | prop = FONT_SPEC_MAX; |
| 2612 | } |
| 2613 | if (prop < FONT_SPEC_MAX |
| 2614 | && INTEGERP (AREF (spec, FONT_DPI_INDEX)) |
| 2615 | && INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
| 2616 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 |
| 2617 | && ! EQ (AREF (spec, FONT_DPI_INDEX), AREF (entity, FONT_DPI_INDEX))) |
| 2618 | prop = FONT_SPEC_MAX; |
| 2619 | if (prop < FONT_SPEC_MAX |
| 2620 | && INTEGERP (AREF (spec, FONT_AVGWIDTH_INDEX)) |
| 2621 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) |
| 2622 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) != 0 |
| 2623 | && ! EQ (AREF (spec, FONT_AVGWIDTH_INDEX), |
| 2624 | AREF (entity, FONT_AVGWIDTH_INDEX))) |
| 2625 | prop = FONT_SPEC_MAX; |
| 2626 | if (prop < FONT_SPEC_MAX) |
| 2627 | val = Fcons (entity, val); |
| 2628 | } |
| 2629 | return (Fvconcat (1, &val)); |
| 2630 | } |
| 2631 | |
| 2632 | |
| 2633 | /* Return a list of vectors of font-entities matching with SPEC on |
| 2634 | FRAME. Each elements in the list is a vector of entities from the |
| 2635 | same font-driver. */ |
| 2636 | |
| 2637 | Lisp_Object |
| 2638 | font_list_entities (Lisp_Object frame, Lisp_Object spec) |
| 2639 | { |
| 2640 | FRAME_PTR f = XFRAME (frame); |
| 2641 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2642 | Lisp_Object ftype, val; |
| 2643 | Lisp_Object list = Qnil; |
| 2644 | int size; |
| 2645 | int need_filtering = 0; |
| 2646 | int i; |
| 2647 | |
| 2648 | font_assert (FONT_SPEC_P (spec)); |
| 2649 | |
| 2650 | if (INTEGERP (AREF (spec, FONT_SIZE_INDEX))) |
| 2651 | size = XINT (AREF (spec, FONT_SIZE_INDEX)); |
| 2652 | else if (FLOATP (AREF (spec, FONT_SIZE_INDEX))) |
| 2653 | size = font_pixel_size (f, spec); |
| 2654 | else |
| 2655 | size = 0; |
| 2656 | |
| 2657 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2658 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
| 2659 | ASET (scratch_font_spec, i, AREF (spec, i)); |
| 2660 | for (i = FONT_WEIGHT_INDEX; i < FONT_EXTRA_INDEX; i++) |
| 2661 | if (i != FONT_SPACING_INDEX) |
| 2662 | { |
| 2663 | ASET (scratch_font_spec, i, Qnil); |
| 2664 | if (! NILP (AREF (spec, i))) |
| 2665 | need_filtering = 1; |
| 2666 | } |
| 2667 | ASET (scratch_font_spec, FONT_SPACING_INDEX, AREF (spec, FONT_SPACING_INDEX)); |
| 2668 | ASET (scratch_font_spec, FONT_EXTRA_INDEX, AREF (spec, FONT_EXTRA_INDEX)); |
| 2669 | |
| 2670 | for (i = 0; driver_list; driver_list = driver_list->next) |
| 2671 | if (driver_list->on |
| 2672 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2673 | { |
| 2674 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2675 | |
| 2676 | ASET (scratch_font_spec, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2677 | val = assoc_no_quit (scratch_font_spec, XCDR (cache)); |
| 2678 | if (CONSP (val)) |
| 2679 | val = XCDR (val); |
| 2680 | else |
| 2681 | { |
| 2682 | Lisp_Object copy; |
| 2683 | |
| 2684 | val = driver_list->driver->list (frame, scratch_font_spec); |
| 2685 | if (NILP (val)) |
| 2686 | val = null_vector; |
| 2687 | else |
| 2688 | val = Fvconcat (1, &val); |
| 2689 | copy = copy_font_spec (scratch_font_spec); |
| 2690 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2691 | XSETCDR (cache, Fcons (Fcons (copy, val), XCDR (cache))); |
| 2692 | } |
| 2693 | if (ASIZE (val) > 0 |
| 2694 | && (need_filtering |
| 2695 | || ! NILP (Vface_ignored_fonts))) |
| 2696 | val = font_delete_unmatched (val, need_filtering ? spec : Qnil, size); |
| 2697 | if (ASIZE (val) > 0) |
| 2698 | list = Fcons (val, list); |
| 2699 | } |
| 2700 | |
| 2701 | list = Fnreverse (list); |
| 2702 | FONT_ADD_LOG ("list", spec, list); |
| 2703 | return list; |
| 2704 | } |
| 2705 | |
| 2706 | |
| 2707 | /* Return a font entity matching with SPEC on FRAME. ATTRS, if non |
| 2708 | nil, is an array of face's attributes, which specifies preferred |
| 2709 | font-related attributes. */ |
| 2710 | |
| 2711 | static Lisp_Object |
| 2712 | font_matching_entity (FRAME_PTR f, Lisp_Object *attrs, Lisp_Object spec) |
| 2713 | { |
| 2714 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2715 | Lisp_Object ftype, size, entity; |
| 2716 | Lisp_Object frame; |
| 2717 | Lisp_Object work = copy_font_spec (spec); |
| 2718 | |
| 2719 | XSETFRAME (frame, f); |
| 2720 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2721 | size = AREF (spec, FONT_SIZE_INDEX); |
| 2722 | |
| 2723 | if (FLOATP (size)) |
| 2724 | ASET (work, FONT_SIZE_INDEX, make_number (font_pixel_size (f, spec))); |
| 2725 | FONT_SET_STYLE (work, FONT_WEIGHT_INDEX, attrs[LFACE_WEIGHT_INDEX]); |
| 2726 | FONT_SET_STYLE (work, FONT_SLANT_INDEX, attrs[LFACE_SLANT_INDEX]); |
| 2727 | FONT_SET_STYLE (work, FONT_WIDTH_INDEX, attrs[LFACE_SWIDTH_INDEX]); |
| 2728 | |
| 2729 | entity = Qnil; |
| 2730 | for (; driver_list; driver_list = driver_list->next) |
| 2731 | if (driver_list->on |
| 2732 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2733 | { |
| 2734 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2735 | Lisp_Object copy; |
| 2736 | |
| 2737 | ASET (work, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2738 | entity = assoc_no_quit (work, XCDR (cache)); |
| 2739 | if (CONSP (entity)) |
| 2740 | entity = XCDR (entity); |
| 2741 | else |
| 2742 | { |
| 2743 | entity = driver_list->driver->match (frame, work); |
| 2744 | copy = copy_font_spec (work); |
| 2745 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2746 | XSETCDR (cache, Fcons (Fcons (copy, entity), XCDR (cache))); |
| 2747 | } |
| 2748 | if (! NILP (entity)) |
| 2749 | break; |
| 2750 | } |
| 2751 | FONT_ADD_LOG ("match", work, entity); |
| 2752 | return entity; |
| 2753 | } |
| 2754 | |
| 2755 | |
| 2756 | /* Open a font of ENTITY and PIXEL_SIZE on frame F, and return the |
| 2757 | opened font object. */ |
| 2758 | |
| 2759 | static Lisp_Object |
| 2760 | font_open_entity (FRAME_PTR f, Lisp_Object entity, int pixel_size) |
| 2761 | { |
| 2762 | struct font_driver_list *driver_list; |
| 2763 | Lisp_Object objlist, size, val, font_object; |
| 2764 | struct font *font; |
| 2765 | int min_width, height; |
| 2766 | int scaled_pixel_size = pixel_size; |
| 2767 | |
| 2768 | font_assert (FONT_ENTITY_P (entity)); |
| 2769 | size = AREF (entity, FONT_SIZE_INDEX); |
| 2770 | if (XINT (size) != 0) |
| 2771 | scaled_pixel_size = pixel_size = XINT (size); |
| 2772 | else if (CONSP (Vface_font_rescale_alist)) |
| 2773 | scaled_pixel_size = pixel_size * font_rescale_ratio (entity); |
| 2774 | |
| 2775 | val = AREF (entity, FONT_TYPE_INDEX); |
| 2776 | for (driver_list = f->font_driver_list; |
| 2777 | driver_list && ! EQ (driver_list->driver->type, val); |
| 2778 | driver_list = driver_list->next); |
| 2779 | if (! driver_list) |
| 2780 | return Qnil; |
| 2781 | |
| 2782 | for (objlist = AREF (entity, FONT_OBJLIST_INDEX); CONSP (objlist); |
| 2783 | objlist = XCDR (objlist)) |
| 2784 | { |
| 2785 | Lisp_Object fn = XCAR (objlist); |
| 2786 | if (! NILP (AREF (fn, FONT_TYPE_INDEX)) |
| 2787 | && XFONT_OBJECT (fn)->pixel_size == pixel_size) |
| 2788 | { |
| 2789 | if (driver_list->driver->cached_font_ok == NULL |
| 2790 | || driver_list->driver->cached_font_ok (f, fn, entity)) |
| 2791 | return fn; |
| 2792 | } |
| 2793 | } |
| 2794 | |
| 2795 | font_object = driver_list->driver->open (f, entity, scaled_pixel_size); |
| 2796 | if (!NILP (font_object)) |
| 2797 | ASET (font_object, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 2798 | FONT_ADD_LOG ("open", entity, font_object); |
| 2799 | if (NILP (font_object)) |
| 2800 | return Qnil; |
| 2801 | ASET (entity, FONT_OBJLIST_INDEX, |
| 2802 | Fcons (font_object, AREF (entity, FONT_OBJLIST_INDEX))); |
| 2803 | num_fonts++; |
| 2804 | |
| 2805 | font = XFONT_OBJECT (font_object); |
| 2806 | min_width = (font->min_width ? font->min_width |
| 2807 | : font->average_width ? font->average_width |
| 2808 | : font->space_width ? font->space_width |
| 2809 | : 1); |
| 2810 | height = (font->height ? font->height : 1); |
| 2811 | #ifdef HAVE_WINDOW_SYSTEM |
| 2812 | FRAME_X_DISPLAY_INFO (f)->n_fonts++; |
| 2813 | if (FRAME_X_DISPLAY_INFO (f)->n_fonts == 1) |
| 2814 | { |
| 2815 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width; |
| 2816 | FRAME_SMALLEST_FONT_HEIGHT (f) = height; |
| 2817 | fonts_changed_p = 1; |
| 2818 | } |
| 2819 | else |
| 2820 | { |
| 2821 | if (FRAME_SMALLEST_CHAR_WIDTH (f) > min_width) |
| 2822 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width, fonts_changed_p = 1; |
| 2823 | if (FRAME_SMALLEST_FONT_HEIGHT (f) > height) |
| 2824 | FRAME_SMALLEST_FONT_HEIGHT (f) = height, fonts_changed_p = 1; |
| 2825 | } |
| 2826 | #endif |
| 2827 | |
| 2828 | return font_object; |
| 2829 | } |
| 2830 | |
| 2831 | |
| 2832 | /* Close FONT_OBJECT that is opened on frame F. */ |
| 2833 | |
| 2834 | static void |
| 2835 | font_close_object (FRAME_PTR f, Lisp_Object font_object) |
| 2836 | { |
| 2837 | struct font *font = XFONT_OBJECT (font_object); |
| 2838 | |
| 2839 | if (NILP (AREF (font_object, FONT_TYPE_INDEX))) |
| 2840 | /* Already closed. */ |
| 2841 | return; |
| 2842 | FONT_ADD_LOG ("close", font_object, Qnil); |
| 2843 | font->driver->close (f, font); |
| 2844 | #ifdef HAVE_WINDOW_SYSTEM |
| 2845 | font_assert (FRAME_X_DISPLAY_INFO (f)->n_fonts); |
| 2846 | FRAME_X_DISPLAY_INFO (f)->n_fonts--; |
| 2847 | #endif |
| 2848 | num_fonts--; |
| 2849 | } |
| 2850 | |
| 2851 | |
| 2852 | /* Return 1 if FONT on F has a glyph for character C, 0 if not, -1 if |
| 2853 | FONT is a font-entity and it must be opened to check. */ |
| 2854 | |
| 2855 | int |
| 2856 | font_has_char (FRAME_PTR f, Lisp_Object font, int c) |
| 2857 | { |
| 2858 | struct font *fontp; |
| 2859 | |
| 2860 | if (FONT_ENTITY_P (font)) |
| 2861 | { |
| 2862 | Lisp_Object type = AREF (font, FONT_TYPE_INDEX); |
| 2863 | struct font_driver_list *driver_list; |
| 2864 | |
| 2865 | for (driver_list = f->font_driver_list; |
| 2866 | driver_list && ! EQ (driver_list->driver->type, type); |
| 2867 | driver_list = driver_list->next); |
| 2868 | if (! driver_list) |
| 2869 | return 0; |
| 2870 | if (! driver_list->driver->has_char) |
| 2871 | return -1; |
| 2872 | return driver_list->driver->has_char (font, c); |
| 2873 | } |
| 2874 | |
| 2875 | font_assert (FONT_OBJECT_P (font)); |
| 2876 | fontp = XFONT_OBJECT (font); |
| 2877 | if (fontp->driver->has_char) |
| 2878 | { |
| 2879 | int result = fontp->driver->has_char (font, c); |
| 2880 | |
| 2881 | if (result >= 0) |
| 2882 | return result; |
| 2883 | } |
| 2884 | return (fontp->driver->encode_char (fontp, c) != FONT_INVALID_CODE); |
| 2885 | } |
| 2886 | |
| 2887 | |
| 2888 | /* Return the glyph ID of FONT_OBJECT for character C. */ |
| 2889 | |
| 2890 | static unsigned |
| 2891 | font_encode_char (Lisp_Object font_object, int c) |
| 2892 | { |
| 2893 | struct font *font; |
| 2894 | |
| 2895 | font_assert (FONT_OBJECT_P (font_object)); |
| 2896 | font = XFONT_OBJECT (font_object); |
| 2897 | return font->driver->encode_char (font, c); |
| 2898 | } |
| 2899 | |
| 2900 | |
| 2901 | /* Return the name of FONT_OBJECT. */ |
| 2902 | |
| 2903 | Lisp_Object |
| 2904 | font_get_name (Lisp_Object font_object) |
| 2905 | { |
| 2906 | font_assert (FONT_OBJECT_P (font_object)); |
| 2907 | return AREF (font_object, FONT_NAME_INDEX); |
| 2908 | } |
| 2909 | |
| 2910 | |
| 2911 | /* Create a new font spec from FONT_NAME, and return it. If FONT_NAME |
| 2912 | could not be parsed by font_parse_name, return Qnil. */ |
| 2913 | |
| 2914 | Lisp_Object |
| 2915 | font_spec_from_name (Lisp_Object font_name) |
| 2916 | { |
| 2917 | Lisp_Object spec = Ffont_spec (0, NULL); |
| 2918 | |
| 2919 | CHECK_STRING (font_name); |
| 2920 | if (font_parse_name (SSDATA (font_name), spec) == -1) |
| 2921 | return Qnil; |
| 2922 | font_put_extra (spec, QCname, font_name); |
| 2923 | font_put_extra (spec, QCuser_spec, font_name); |
| 2924 | return spec; |
| 2925 | } |
| 2926 | |
| 2927 | |
| 2928 | void |
| 2929 | font_clear_prop (Lisp_Object *attrs, enum font_property_index prop) |
| 2930 | { |
| 2931 | Lisp_Object font = attrs[LFACE_FONT_INDEX]; |
| 2932 | |
| 2933 | if (! FONTP (font)) |
| 2934 | return; |
| 2935 | |
| 2936 | if (! NILP (Ffont_get (font, QCname))) |
| 2937 | { |
| 2938 | font = copy_font_spec (font); |
| 2939 | font_put_extra (font, QCname, Qnil); |
| 2940 | } |
| 2941 | |
| 2942 | if (NILP (AREF (font, prop)) |
| 2943 | && prop != FONT_FAMILY_INDEX |
| 2944 | && prop != FONT_FOUNDRY_INDEX |
| 2945 | && prop != FONT_WIDTH_INDEX |
| 2946 | && prop != FONT_SIZE_INDEX) |
| 2947 | return; |
| 2948 | if (EQ (font, attrs[LFACE_FONT_INDEX])) |
| 2949 | font = copy_font_spec (font); |
| 2950 | ASET (font, prop, Qnil); |
| 2951 | if (prop == FONT_FAMILY_INDEX || prop == FONT_FOUNDRY_INDEX) |
| 2952 | { |
| 2953 | if (prop == FONT_FAMILY_INDEX) |
| 2954 | { |
| 2955 | ASET (font, FONT_FOUNDRY_INDEX, Qnil); |
| 2956 | /* If we are setting the font family, we must also clear |
| 2957 | FONT_WIDTH_INDEX to avoid rejecting families that lack |
| 2958 | support for some widths. */ |
| 2959 | ASET (font, FONT_WIDTH_INDEX, Qnil); |
| 2960 | } |
| 2961 | ASET (font, FONT_ADSTYLE_INDEX, Qnil); |
| 2962 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 2963 | ASET (font, FONT_SIZE_INDEX, Qnil); |
| 2964 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 2965 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 2966 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 2967 | } |
| 2968 | else if (prop == FONT_SIZE_INDEX) |
| 2969 | { |
| 2970 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 2971 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 2972 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 2973 | } |
| 2974 | else if (prop == FONT_WIDTH_INDEX) |
| 2975 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 2976 | attrs[LFACE_FONT_INDEX] = font; |
| 2977 | } |
| 2978 | |
| 2979 | /* Select a font from ENTITIES (list of font-entity vectors) that |
| 2980 | supports C and is the best match for ATTRS and PIXEL_SIZE. */ |
| 2981 | |
| 2982 | static Lisp_Object |
| 2983 | font_select_entity (Lisp_Object frame, Lisp_Object entities, Lisp_Object *attrs, int pixel_size, int c) |
| 2984 | { |
| 2985 | Lisp_Object font_entity; |
| 2986 | Lisp_Object prefer; |
| 2987 | int result, i; |
| 2988 | FRAME_PTR f = XFRAME (frame); |
| 2989 | |
| 2990 | if (NILP (XCDR (entities)) |
| 2991 | && ASIZE (XCAR (entities)) == 1) |
| 2992 | { |
| 2993 | font_entity = AREF (XCAR (entities), 0); |
| 2994 | if (c < 0 |
| 2995 | || (result = font_has_char (f, font_entity, c)) > 0) |
| 2996 | return font_entity; |
| 2997 | return Qnil; |
| 2998 | } |
| 2999 | |
| 3000 | /* Sort fonts by properties specified in ATTRS. */ |
| 3001 | prefer = scratch_font_prefer; |
| 3002 | |
| 3003 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 3004 | ASET (prefer, i, Qnil); |
| 3005 | if (FONTP (attrs[LFACE_FONT_INDEX])) |
| 3006 | { |
| 3007 | Lisp_Object face_font = attrs[LFACE_FONT_INDEX]; |
| 3008 | |
| 3009 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 3010 | ASET (prefer, i, AREF (face_font, i)); |
| 3011 | } |
| 3012 | if (NILP (AREF (prefer, FONT_WEIGHT_INDEX))) |
| 3013 | FONT_SET_STYLE (prefer, FONT_WEIGHT_INDEX, attrs[LFACE_WEIGHT_INDEX]); |
| 3014 | if (NILP (AREF (prefer, FONT_SLANT_INDEX))) |
| 3015 | FONT_SET_STYLE (prefer, FONT_SLANT_INDEX, attrs[LFACE_SLANT_INDEX]); |
| 3016 | if (NILP (AREF (prefer, FONT_WIDTH_INDEX))) |
| 3017 | FONT_SET_STYLE (prefer, FONT_WIDTH_INDEX, attrs[LFACE_SWIDTH_INDEX]); |
| 3018 | ASET (prefer, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 3019 | |
| 3020 | return font_sort_entities (entities, prefer, frame, c); |
| 3021 | } |
| 3022 | |
| 3023 | /* Return a font-entity that satisfies SPEC and is the best match for |
| 3024 | face's font related attributes in ATTRS. C, if not negative, is a |
| 3025 | character that the entity must support. */ |
| 3026 | |
| 3027 | Lisp_Object |
| 3028 | font_find_for_lface (FRAME_PTR f, Lisp_Object *attrs, Lisp_Object spec, int c) |
| 3029 | { |
| 3030 | Lisp_Object work; |
| 3031 | Lisp_Object frame, entities, val; |
| 3032 | Lisp_Object foundry[3], *family, registry[3], adstyle[3]; |
| 3033 | int pixel_size; |
| 3034 | int i, j, k, l; |
| 3035 | |
| 3036 | registry[0] = AREF (spec, FONT_REGISTRY_INDEX); |
| 3037 | if (NILP (registry[0])) |
| 3038 | { |
| 3039 | registry[0] = DEFAULT_ENCODING; |
| 3040 | registry[1] = Qascii_0; |
| 3041 | registry[2] = null_vector; |
| 3042 | } |
| 3043 | else |
| 3044 | registry[1] = null_vector; |
| 3045 | |
| 3046 | if (c >= 0 && ! NILP (AREF (spec, FONT_REGISTRY_INDEX))) |
| 3047 | { |
| 3048 | struct charset *encoding, *repertory; |
| 3049 | |
| 3050 | if (font_registry_charsets (AREF (spec, FONT_REGISTRY_INDEX), |
| 3051 | &encoding, &repertory) < 0) |
| 3052 | return Qnil; |
| 3053 | if (repertory |
| 3054 | && ENCODE_CHAR (repertory, c) == CHARSET_INVALID_CODE (repertory)) |
| 3055 | return Qnil; |
| 3056 | else if (c > encoding->max_char) |
| 3057 | return Qnil; |
| 3058 | } |
| 3059 | |
| 3060 | work = copy_font_spec (spec); |
| 3061 | ASET (work, FONT_TYPE_INDEX, AREF (spec, FONT_TYPE_INDEX)); |
| 3062 | XSETFRAME (frame, f); |
| 3063 | pixel_size = font_pixel_size (f, spec); |
| 3064 | if (pixel_size == 0 && INTEGERP (attrs[LFACE_HEIGHT_INDEX])) |
| 3065 | { |
| 3066 | double pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 3067 | |
| 3068 | pixel_size = POINT_TO_PIXEL (pt / 10, f->resy); |
| 3069 | } |
| 3070 | ASET (work, FONT_SIZE_INDEX, Qnil); |
| 3071 | foundry[0] = AREF (work, FONT_FOUNDRY_INDEX); |
| 3072 | if (! NILP (foundry[0])) |
| 3073 | foundry[1] = null_vector; |
| 3074 | else if (STRINGP (attrs[LFACE_FOUNDRY_INDEX])) |
| 3075 | { |
| 3076 | val = attrs[LFACE_FOUNDRY_INDEX]; |
| 3077 | foundry[0] = font_intern_prop (SSDATA (val), SBYTES (val), 1); |
| 3078 | foundry[1] = Qnil; |
| 3079 | foundry[2] = null_vector; |
| 3080 | } |
| 3081 | else |
| 3082 | foundry[0] = Qnil, foundry[1] = null_vector; |
| 3083 | |
| 3084 | adstyle[0] = AREF (work, FONT_ADSTYLE_INDEX); |
| 3085 | if (! NILP (adstyle[0])) |
| 3086 | adstyle[1] = null_vector; |
| 3087 | else if (FONTP (attrs[LFACE_FONT_INDEX])) |
| 3088 | { |
| 3089 | Lisp_Object face_font = attrs[LFACE_FONT_INDEX]; |
| 3090 | |
| 3091 | if (! NILP (AREF (face_font, FONT_ADSTYLE_INDEX))) |
| 3092 | { |
| 3093 | adstyle[0] = AREF (face_font, FONT_ADSTYLE_INDEX); |
| 3094 | adstyle[1] = Qnil; |
| 3095 | adstyle[2] = null_vector; |
| 3096 | } |
| 3097 | else |
| 3098 | adstyle[0] = Qnil, adstyle[1] = null_vector; |
| 3099 | } |
| 3100 | else |
| 3101 | adstyle[0] = Qnil, adstyle[1] = null_vector; |
| 3102 | |
| 3103 | |
| 3104 | val = AREF (work, FONT_FAMILY_INDEX); |
| 3105 | if (NILP (val) && STRINGP (attrs[LFACE_FAMILY_INDEX])) |
| 3106 | { |
| 3107 | val = attrs[LFACE_FAMILY_INDEX]; |
| 3108 | val = font_intern_prop (SSDATA (val), SBYTES (val), 1); |
| 3109 | } |
| 3110 | if (NILP (val)) |
| 3111 | { |
| 3112 | family = alloca ((sizeof family[0]) * 2); |
| 3113 | family[0] = Qnil; |
| 3114 | family[1] = null_vector; /* terminator. */ |
| 3115 | } |
| 3116 | else |
| 3117 | { |
| 3118 | Lisp_Object alters |
| 3119 | = Fassoc_string (val, Vface_alternative_font_family_alist, |
| 3120 | /* Font family names are case-sensitive under NS. */ |
| 3121 | #ifndef HAVE_NS |
| 3122 | Qt |
| 3123 | #else |
| 3124 | Qnil |
| 3125 | #endif |
| 3126 | ); |
| 3127 | |
| 3128 | if (! NILP (alters)) |
| 3129 | { |
| 3130 | family = alloca ((sizeof family[0]) * (XINT (Flength (alters)) + 2)); |
| 3131 | for (i = 0; CONSP (alters); i++, alters = XCDR (alters)) |
| 3132 | family[i] = XCAR (alters); |
| 3133 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 3134 | family[i++] = Qnil; |
| 3135 | family[i] = null_vector; |
| 3136 | } |
| 3137 | else |
| 3138 | { |
| 3139 | family = alloca ((sizeof family[0]) * 3); |
| 3140 | i = 0; |
| 3141 | family[i++] = val; |
| 3142 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 3143 | family[i++] = Qnil; |
| 3144 | family[i] = null_vector; |
| 3145 | } |
| 3146 | } |
| 3147 | |
| 3148 | for (i = 0; SYMBOLP (family[i]); i++) |
| 3149 | { |
| 3150 | ASET (work, FONT_FAMILY_INDEX, family[i]); |
| 3151 | for (j = 0; SYMBOLP (foundry[j]); j++) |
| 3152 | { |
| 3153 | ASET (work, FONT_FOUNDRY_INDEX, foundry[j]); |
| 3154 | for (k = 0; SYMBOLP (registry[k]); k++) |
| 3155 | { |
| 3156 | ASET (work, FONT_REGISTRY_INDEX, registry[k]); |
| 3157 | for (l = 0; SYMBOLP (adstyle[l]); l++) |
| 3158 | { |
| 3159 | ASET (work, FONT_ADSTYLE_INDEX, adstyle[l]); |
| 3160 | entities = font_list_entities (frame, work); |
| 3161 | if (! NILP (entities)) |
| 3162 | { |
| 3163 | val = font_select_entity (frame, entities, |
| 3164 | attrs, pixel_size, c); |
| 3165 | if (! NILP (val)) |
| 3166 | return val; |
| 3167 | } |
| 3168 | } |
| 3169 | } |
| 3170 | } |
| 3171 | } |
| 3172 | return Qnil; |
| 3173 | } |
| 3174 | |
| 3175 | |
| 3176 | Lisp_Object |
| 3177 | font_open_for_lface (FRAME_PTR f, Lisp_Object entity, Lisp_Object *attrs, Lisp_Object spec) |
| 3178 | { |
| 3179 | int size; |
| 3180 | |
| 3181 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX)) |
| 3182 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 3183 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 3184 | else if (FONT_SPEC_P (spec) && ! NILP (AREF (spec, FONT_SIZE_INDEX))) |
| 3185 | size = font_pixel_size (f, spec); |
| 3186 | else |
| 3187 | { |
| 3188 | double pt; |
| 3189 | if (INTEGERP (attrs[LFACE_HEIGHT_INDEX])) |
| 3190 | pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 3191 | else |
| 3192 | { |
| 3193 | struct face *def = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 3194 | Lisp_Object height = def->lface[LFACE_HEIGHT_INDEX]; |
| 3195 | if (INTEGERP (height)) |
| 3196 | pt = XINT (height); |
| 3197 | else |
| 3198 | abort(); /* We should never end up here. */ |
| 3199 | } |
| 3200 | |
| 3201 | pt /= 10; |
| 3202 | size = POINT_TO_PIXEL (pt, f->resy); |
| 3203 | #ifdef HAVE_NS |
| 3204 | if (size == 0) |
| 3205 | { |
| 3206 | Lisp_Object ffsize = get_frame_param(f, Qfontsize); |
| 3207 | size = NUMBERP (ffsize) ? POINT_TO_PIXEL (XINT (ffsize), f->resy) : 0; |
| 3208 | } |
| 3209 | #endif |
| 3210 | } |
| 3211 | return font_open_entity (f, entity, size); |
| 3212 | } |
| 3213 | |
| 3214 | |
| 3215 | /* Find a font that satisfies SPEC and is the best match for |
| 3216 | face's attributes in ATTRS on FRAME, and return the opened |
| 3217 | font-object. */ |
| 3218 | |
| 3219 | Lisp_Object |
| 3220 | font_load_for_lface (FRAME_PTR f, Lisp_Object *attrs, Lisp_Object spec) |
| 3221 | { |
| 3222 | Lisp_Object entity, name; |
| 3223 | |
| 3224 | entity = font_find_for_lface (f, attrs, spec, -1); |
| 3225 | if (NILP (entity)) |
| 3226 | { |
| 3227 | /* No font is listed for SPEC, but each font-backend may have |
| 3228 | different criteria about "font matching". So, try it. */ |
| 3229 | entity = font_matching_entity (f, attrs, spec); |
| 3230 | if (NILP (entity)) |
| 3231 | return Qnil; |
| 3232 | } |
| 3233 | /* Don't lose the original name that was put in initially. We need |
| 3234 | it to re-apply the font when font parameters (like hinting or dpi) have |
| 3235 | changed. */ |
| 3236 | entity = font_open_for_lface (f, entity, attrs, spec); |
| 3237 | if (!NILP (entity)) |
| 3238 | { |
| 3239 | name = Ffont_get (spec, QCuser_spec); |
| 3240 | if (STRINGP (name)) font_put_extra (entity, QCuser_spec, name); |
| 3241 | } |
| 3242 | return entity; |
| 3243 | } |
| 3244 | |
| 3245 | |
| 3246 | /* Make FACE on frame F ready to use the font opened for FACE. */ |
| 3247 | |
| 3248 | void |
| 3249 | font_prepare_for_face (FRAME_PTR f, struct face *face) |
| 3250 | { |
| 3251 | if (face->font->driver->prepare_face) |
| 3252 | face->font->driver->prepare_face (f, face); |
| 3253 | } |
| 3254 | |
| 3255 | |
| 3256 | /* Make FACE on frame F stop using the font opened for FACE. */ |
| 3257 | |
| 3258 | void |
| 3259 | font_done_for_face (FRAME_PTR f, struct face *face) |
| 3260 | { |
| 3261 | if (face->font->driver->done_face) |
| 3262 | face->font->driver->done_face (f, face); |
| 3263 | face->extra = NULL; |
| 3264 | } |
| 3265 | |
| 3266 | |
| 3267 | /* Open a font that is a match for font-spec SPEC on frame F. If no proper |
| 3268 | font is found, return Qnil. */ |
| 3269 | |
| 3270 | Lisp_Object |
| 3271 | font_open_by_spec (FRAME_PTR f, Lisp_Object spec) |
| 3272 | { |
| 3273 | Lisp_Object attrs[LFACE_VECTOR_SIZE]; |
| 3274 | |
| 3275 | /* We set up the default font-related attributes of a face to prefer |
| 3276 | a moderate font. */ |
| 3277 | attrs[LFACE_FAMILY_INDEX] = attrs[LFACE_FOUNDRY_INDEX] = Qnil; |
| 3278 | attrs[LFACE_SWIDTH_INDEX] = attrs[LFACE_WEIGHT_INDEX] |
| 3279 | = attrs[LFACE_SLANT_INDEX] = Qnormal; |
| 3280 | #ifndef HAVE_NS |
| 3281 | attrs[LFACE_HEIGHT_INDEX] = make_number (120); |
| 3282 | #else |
| 3283 | attrs[LFACE_HEIGHT_INDEX] = make_number (0); |
| 3284 | #endif |
| 3285 | attrs[LFACE_FONT_INDEX] = Qnil; |
| 3286 | |
| 3287 | return font_load_for_lface (f, attrs, spec); |
| 3288 | } |
| 3289 | |
| 3290 | |
| 3291 | /* Open a font that matches NAME on frame F. If no proper font is |
| 3292 | found, return Qnil. */ |
| 3293 | |
| 3294 | Lisp_Object |
| 3295 | font_open_by_name (FRAME_PTR f, const char *name) |
| 3296 | { |
| 3297 | Lisp_Object args[2]; |
| 3298 | Lisp_Object spec, ret; |
| 3299 | |
| 3300 | args[0] = QCname; |
| 3301 | args[1] = make_unibyte_string (name, strlen (name)); |
| 3302 | spec = Ffont_spec (2, args); |
| 3303 | ret = font_open_by_spec (f, spec); |
| 3304 | /* Do not lose name originally put in. */ |
| 3305 | if (!NILP (ret)) |
| 3306 | font_put_extra (ret, QCuser_spec, args[1]); |
| 3307 | |
| 3308 | return ret; |
| 3309 | } |
| 3310 | |
| 3311 | |
| 3312 | /* Register font-driver DRIVER. This function is used in two ways. |
| 3313 | |
| 3314 | The first is with frame F non-NULL. In this case, make DRIVER |
| 3315 | available (but not yet activated) on F. All frame creators |
| 3316 | (e.g. Fx_create_frame) must call this function at least once with |
| 3317 | an available font-driver. |
| 3318 | |
| 3319 | The second is with frame F NULL. In this case, DRIVER is globally |
| 3320 | registered in the variable `font_driver_list'. All font-driver |
| 3321 | implementations must call this function in its syms_of_XXXX |
| 3322 | (e.g. syms_of_xfont). */ |
| 3323 | |
| 3324 | void |
| 3325 | register_font_driver (struct font_driver *driver, FRAME_PTR f) |
| 3326 | { |
| 3327 | struct font_driver_list *root = f ? f->font_driver_list : font_driver_list; |
| 3328 | struct font_driver_list *prev, *list; |
| 3329 | |
| 3330 | if (f && ! driver->draw) |
| 3331 | error ("Unusable font driver for a frame: %s", |
| 3332 | SDATA (SYMBOL_NAME (driver->type))); |
| 3333 | |
| 3334 | for (prev = NULL, list = root; list; prev = list, list = list->next) |
| 3335 | if (EQ (list->driver->type, driver->type)) |
| 3336 | error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver->type))); |
| 3337 | |
| 3338 | list = xmalloc (sizeof (struct font_driver_list)); |
| 3339 | list->on = 0; |
| 3340 | list->driver = driver; |
| 3341 | list->next = NULL; |
| 3342 | if (prev) |
| 3343 | prev->next = list; |
| 3344 | else if (f) |
| 3345 | f->font_driver_list = list; |
| 3346 | else |
| 3347 | font_driver_list = list; |
| 3348 | if (! f) |
| 3349 | num_font_drivers++; |
| 3350 | } |
| 3351 | |
| 3352 | void |
| 3353 | free_font_driver_list (FRAME_PTR f) |
| 3354 | { |
| 3355 | struct font_driver_list *list, *next; |
| 3356 | |
| 3357 | for (list = f->font_driver_list; list; list = next) |
| 3358 | { |
| 3359 | next = list->next; |
| 3360 | xfree (list); |
| 3361 | } |
| 3362 | f->font_driver_list = NULL; |
| 3363 | } |
| 3364 | |
| 3365 | |
| 3366 | /* Make the frame F use font backends listed in NEW_DRIVERS (list of |
| 3367 | symbols, e.g. xft, x). If NEW_DRIVERS is t, make F use all |
| 3368 | available font drivers. If NEW_DRIVERS is nil, finalize all drivers. |
| 3369 | |
| 3370 | A caller must free all realized faces if any in advance. The |
| 3371 | return value is a list of font backends actually made used on |
| 3372 | F. */ |
| 3373 | |
| 3374 | Lisp_Object |
| 3375 | font_update_drivers (FRAME_PTR f, Lisp_Object new_drivers) |
| 3376 | { |
| 3377 | Lisp_Object active_drivers = Qnil; |
| 3378 | struct font_driver_list *list; |
| 3379 | |
| 3380 | /* At first, turn off non-requested drivers, and turn on requested |
| 3381 | drivers. */ |
| 3382 | for (list = f->font_driver_list; list; list = list->next) |
| 3383 | { |
| 3384 | struct font_driver *driver = list->driver; |
| 3385 | if ((EQ (new_drivers, Qt) || ! NILP (Fmemq (driver->type, new_drivers))) |
| 3386 | != list->on) |
| 3387 | { |
| 3388 | if (list->on) |
| 3389 | { |
| 3390 | if (driver->end_for_frame) |
| 3391 | driver->end_for_frame (f); |
| 3392 | font_finish_cache (f, driver); |
| 3393 | list->on = 0; |
| 3394 | } |
| 3395 | else |
| 3396 | { |
| 3397 | if (! driver->start_for_frame |
| 3398 | || driver->start_for_frame (f) == 0) |
| 3399 | { |
| 3400 | font_prepare_cache (f, driver); |
| 3401 | list->on = 1; |
| 3402 | } |
| 3403 | } |
| 3404 | } |
| 3405 | } |
| 3406 | |
| 3407 | if (NILP (new_drivers)) |
| 3408 | return Qnil; |
| 3409 | |
| 3410 | if (! EQ (new_drivers, Qt)) |
| 3411 | { |
| 3412 | /* Re-order the driver list according to new_drivers. */ |
| 3413 | struct font_driver_list **list_table, **next; |
| 3414 | Lisp_Object tail; |
| 3415 | int i; |
| 3416 | |
| 3417 | list_table = alloca (sizeof list_table[0] * (num_font_drivers + 1)); |
| 3418 | for (i = 0, tail = new_drivers; ! NILP (tail); tail = XCDR (tail)) |
| 3419 | { |
| 3420 | for (list = f->font_driver_list; list; list = list->next) |
| 3421 | if (list->on && EQ (list->driver->type, XCAR (tail))) |
| 3422 | break; |
| 3423 | if (list) |
| 3424 | list_table[i++] = list; |
| 3425 | } |
| 3426 | for (list = f->font_driver_list; list; list = list->next) |
| 3427 | if (! list->on) |
| 3428 | list_table[i++] = list; |
| 3429 | list_table[i] = NULL; |
| 3430 | |
| 3431 | next = &f->font_driver_list; |
| 3432 | for (i = 0; list_table[i]; i++) |
| 3433 | { |
| 3434 | *next = list_table[i]; |
| 3435 | next = &(*next)->next; |
| 3436 | } |
| 3437 | *next = NULL; |
| 3438 | |
| 3439 | if (! f->font_driver_list->on) |
| 3440 | { /* None of the drivers is enabled: enable them all. |
| 3441 | Happens if you set the list of drivers to (xft x) in your .emacs |
| 3442 | and then use it under w32 or ns. */ |
| 3443 | for (list = f->font_driver_list; list; list = list->next) |
| 3444 | { |
| 3445 | struct font_driver *driver = list->driver; |
| 3446 | eassert (! list->on); |
| 3447 | if (! driver->start_for_frame |
| 3448 | || driver->start_for_frame (f) == 0) |
| 3449 | { |
| 3450 | font_prepare_cache (f, driver); |
| 3451 | list->on = 1; |
| 3452 | } |
| 3453 | } |
| 3454 | } |
| 3455 | } |
| 3456 | |
| 3457 | for (list = f->font_driver_list; list; list = list->next) |
| 3458 | if (list->on) |
| 3459 | active_drivers = nconc2 (active_drivers, |
| 3460 | Fcons (list->driver->type, Qnil)); |
| 3461 | return active_drivers; |
| 3462 | } |
| 3463 | |
| 3464 | int |
| 3465 | font_put_frame_data (FRAME_PTR f, struct font_driver *driver, void *data) |
| 3466 | { |
| 3467 | struct font_data_list *list, *prev; |
| 3468 | |
| 3469 | for (prev = NULL, list = f->font_data_list; list; |
| 3470 | prev = list, list = list->next) |
| 3471 | if (list->driver == driver) |
| 3472 | break; |
| 3473 | if (! data) |
| 3474 | { |
| 3475 | if (list) |
| 3476 | { |
| 3477 | if (prev) |
| 3478 | prev->next = list->next; |
| 3479 | else |
| 3480 | f->font_data_list = list->next; |
| 3481 | xfree (list); |
| 3482 | } |
| 3483 | return 0; |
| 3484 | } |
| 3485 | |
| 3486 | if (! list) |
| 3487 | { |
| 3488 | list = xmalloc (sizeof (struct font_data_list)); |
| 3489 | list->driver = driver; |
| 3490 | list->next = f->font_data_list; |
| 3491 | f->font_data_list = list; |
| 3492 | } |
| 3493 | list->data = data; |
| 3494 | return 0; |
| 3495 | } |
| 3496 | |
| 3497 | |
| 3498 | void * |
| 3499 | font_get_frame_data (FRAME_PTR f, struct font_driver *driver) |
| 3500 | { |
| 3501 | struct font_data_list *list; |
| 3502 | |
| 3503 | for (list = f->font_data_list; list; list = list->next) |
| 3504 | if (list->driver == driver) |
| 3505 | break; |
| 3506 | if (! list) |
| 3507 | return NULL; |
| 3508 | return list->data; |
| 3509 | } |
| 3510 | |
| 3511 | |
| 3512 | /* Sets attributes on a font. Any properties that appear in ALIST and |
| 3513 | BOOLEAN_PROPERTIES or NON_BOOLEAN_PROPERTIES are set on the font. |
| 3514 | BOOLEAN_PROPERTIES and NON_BOOLEAN_PROPERTIES are NULL-terminated |
| 3515 | arrays of strings. This function is intended for use by the font |
| 3516 | drivers to implement their specific font_filter_properties. */ |
| 3517 | void |
| 3518 | font_filter_properties (Lisp_Object font, |
| 3519 | Lisp_Object alist, |
| 3520 | const char *const boolean_properties[], |
| 3521 | const char *const non_boolean_properties[]) |
| 3522 | { |
| 3523 | Lisp_Object it; |
| 3524 | int i; |
| 3525 | |
| 3526 | /* Set boolean values to Qt or Qnil */ |
| 3527 | for (i = 0; boolean_properties[i] != NULL; ++i) |
| 3528 | for (it = alist; ! NILP (it); it = XCDR (it)) |
| 3529 | { |
| 3530 | Lisp_Object key = XCAR (XCAR (it)); |
| 3531 | Lisp_Object val = XCDR (XCAR (it)); |
| 3532 | char *keystr = SSDATA (SYMBOL_NAME (key)); |
| 3533 | |
| 3534 | if (strcmp (boolean_properties[i], keystr) == 0) |
| 3535 | { |
| 3536 | const char *str = INTEGERP (val) ? (XINT (val) ? "true" : "false") |
| 3537 | : SYMBOLP (val) ? SSDATA (SYMBOL_NAME (val)) |
| 3538 | : "true"; |
| 3539 | |
| 3540 | if (strcmp ("false", str) == 0 || strcmp ("False", str) == 0 |
| 3541 | || strcmp ("FALSE", str) == 0 || strcmp ("FcFalse", str) == 0 |
| 3542 | || strcmp ("off", str) == 0 || strcmp ("OFF", str) == 0 |
| 3543 | || strcmp ("Off", str) == 0) |
| 3544 | val = Qnil; |
| 3545 | else |
| 3546 | val = Qt; |
| 3547 | |
| 3548 | Ffont_put (font, key, val); |
| 3549 | } |
| 3550 | } |
| 3551 | |
| 3552 | for (i = 0; non_boolean_properties[i] != NULL; ++i) |
| 3553 | for (it = alist; ! NILP (it); it = XCDR (it)) |
| 3554 | { |
| 3555 | Lisp_Object key = XCAR (XCAR (it)); |
| 3556 | Lisp_Object val = XCDR (XCAR (it)); |
| 3557 | char *keystr = SSDATA (SYMBOL_NAME (key)); |
| 3558 | if (strcmp (non_boolean_properties[i], keystr) == 0) |
| 3559 | Ffont_put (font, key, val); |
| 3560 | } |
| 3561 | } |
| 3562 | |
| 3563 | |
| 3564 | /* Return the font used to draw character C by FACE at buffer position |
| 3565 | POS in window W. If STRING is non-nil, it is a string containing C |
| 3566 | at index POS. If C is negative, get C from the current buffer or |
| 3567 | STRING. */ |
| 3568 | |
| 3569 | static Lisp_Object |
| 3570 | font_at (int c, EMACS_INT pos, struct face *face, struct window *w, |
| 3571 | Lisp_Object string) |
| 3572 | { |
| 3573 | FRAME_PTR f; |
| 3574 | int multibyte; |
| 3575 | Lisp_Object font_object; |
| 3576 | |
| 3577 | multibyte = (NILP (string) |
| 3578 | ? ! NILP (BVAR (current_buffer, enable_multibyte_characters)) |
| 3579 | : STRING_MULTIBYTE (string)); |
| 3580 | if (c < 0) |
| 3581 | { |
| 3582 | if (NILP (string)) |
| 3583 | { |
| 3584 | if (multibyte) |
| 3585 | { |
| 3586 | EMACS_INT pos_byte = CHAR_TO_BYTE (pos); |
| 3587 | |
| 3588 | c = FETCH_CHAR (pos_byte); |
| 3589 | } |
| 3590 | else |
| 3591 | c = FETCH_BYTE (pos); |
| 3592 | } |
| 3593 | else |
| 3594 | { |
| 3595 | unsigned char *str; |
| 3596 | |
| 3597 | multibyte = STRING_MULTIBYTE (string); |
| 3598 | if (multibyte) |
| 3599 | { |
| 3600 | EMACS_INT pos_byte = string_char_to_byte (string, pos); |
| 3601 | |
| 3602 | str = SDATA (string) + pos_byte; |
| 3603 | c = STRING_CHAR (str); |
| 3604 | } |
| 3605 | else |
| 3606 | c = SDATA (string)[pos]; |
| 3607 | } |
| 3608 | } |
| 3609 | |
| 3610 | f = XFRAME (w->frame); |
| 3611 | if (! FRAME_WINDOW_P (f)) |
| 3612 | return Qnil; |
| 3613 | if (! face) |
| 3614 | { |
| 3615 | int face_id; |
| 3616 | EMACS_INT endptr; |
| 3617 | |
| 3618 | if (STRINGP (string)) |
| 3619 | face_id = face_at_string_position (w, string, pos, 0, -1, -1, &endptr, |
| 3620 | DEFAULT_FACE_ID, 0); |
| 3621 | else |
| 3622 | face_id = face_at_buffer_position (w, pos, -1, -1, &endptr, |
| 3623 | pos + 100, 0, -1); |
| 3624 | face = FACE_FROM_ID (f, face_id); |
| 3625 | } |
| 3626 | if (multibyte) |
| 3627 | { |
| 3628 | int face_id = FACE_FOR_CHAR (f, face, c, pos, string); |
| 3629 | face = FACE_FROM_ID (f, face_id); |
| 3630 | } |
| 3631 | if (! face->font) |
| 3632 | return Qnil; |
| 3633 | |
| 3634 | XSETFONT (font_object, face->font); |
| 3635 | return font_object; |
| 3636 | } |
| 3637 | |
| 3638 | |
| 3639 | #ifdef HAVE_WINDOW_SYSTEM |
| 3640 | |
| 3641 | /* Check how many characters after POS (at most to *LIMIT) can be |
| 3642 | displayed by the same font in the window W. FACE, if non-NULL, is |
| 3643 | the face selected for the character at POS. If STRING is not nil, |
| 3644 | it is the string to check instead of the current buffer. In that |
| 3645 | case, FACE must be not NULL. |
| 3646 | |
| 3647 | The return value is the font-object for the character at POS. |
| 3648 | *LIMIT is set to the position where that font can't be used. |
| 3649 | |
| 3650 | It is assured that the current buffer (or STRING) is multibyte. */ |
| 3651 | |
| 3652 | Lisp_Object |
| 3653 | font_range (EMACS_INT pos, EMACS_INT *limit, struct window *w, struct face *face, Lisp_Object string) |
| 3654 | { |
| 3655 | EMACS_INT pos_byte, ignore; |
| 3656 | int c; |
| 3657 | Lisp_Object font_object = Qnil; |
| 3658 | |
| 3659 | if (NILP (string)) |
| 3660 | { |
| 3661 | pos_byte = CHAR_TO_BYTE (pos); |
| 3662 | if (! face) |
| 3663 | { |
| 3664 | int face_id; |
| 3665 | |
| 3666 | face_id = face_at_buffer_position (w, pos, 0, 0, &ignore, |
| 3667 | *limit, 0, -1); |
| 3668 | face = FACE_FROM_ID (XFRAME (w->frame), face_id); |
| 3669 | } |
| 3670 | } |
| 3671 | else |
| 3672 | { |
| 3673 | font_assert (face); |
| 3674 | pos_byte = string_char_to_byte (string, pos); |
| 3675 | } |
| 3676 | |
| 3677 | while (pos < *limit) |
| 3678 | { |
| 3679 | Lisp_Object category; |
| 3680 | |
| 3681 | if (NILP (string)) |
| 3682 | FETCH_CHAR_ADVANCE_NO_CHECK (c, pos, pos_byte); |
| 3683 | else |
| 3684 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, pos, pos_byte); |
| 3685 | category = CHAR_TABLE_REF (Vunicode_category_table, c); |
| 3686 | if (INTEGERP (category) |
| 3687 | && (XINT (category) == UNICODE_CATEGORY_Cf |
| 3688 | || CHAR_VARIATION_SELECTOR_P (c))) |
| 3689 | continue; |
| 3690 | if (NILP (font_object)) |
| 3691 | { |
| 3692 | font_object = font_for_char (face, c, pos - 1, string); |
| 3693 | if (NILP (font_object)) |
| 3694 | return Qnil; |
| 3695 | continue; |
| 3696 | } |
| 3697 | if (font_encode_char (font_object, c) == FONT_INVALID_CODE) |
| 3698 | *limit = pos - 1; |
| 3699 | } |
| 3700 | return font_object; |
| 3701 | } |
| 3702 | #endif |
| 3703 | |
| 3704 | \f |
| 3705 | /* Lisp API */ |
| 3706 | |
| 3707 | DEFUN ("fontp", Ffontp, Sfontp, 1, 2, 0, |
| 3708 | doc: /* Return t if OBJECT is a font-spec, font-entity, or font-object. |
| 3709 | Return nil otherwise. |
| 3710 | Optional 2nd argument EXTRA-TYPE, if non-nil, specifies to check |
| 3711 | which kind of font it is. It must be one of `font-spec', `font-entity', |
| 3712 | `font-object'. */) |
| 3713 | (Lisp_Object object, Lisp_Object extra_type) |
| 3714 | { |
| 3715 | if (NILP (extra_type)) |
| 3716 | return (FONTP (object) ? Qt : Qnil); |
| 3717 | if (EQ (extra_type, Qfont_spec)) |
| 3718 | return (FONT_SPEC_P (object) ? Qt : Qnil); |
| 3719 | if (EQ (extra_type, Qfont_entity)) |
| 3720 | return (FONT_ENTITY_P (object) ? Qt : Qnil); |
| 3721 | if (EQ (extra_type, Qfont_object)) |
| 3722 | return (FONT_OBJECT_P (object) ? Qt : Qnil); |
| 3723 | wrong_type_argument (intern ("font-extra-type"), extra_type); |
| 3724 | } |
| 3725 | |
| 3726 | DEFUN ("font-spec", Ffont_spec, Sfont_spec, 0, MANY, 0, |
| 3727 | doc: /* Return a newly created font-spec with arguments as properties. |
| 3728 | |
| 3729 | ARGS must come in pairs KEY VALUE of font properties. KEY must be a |
| 3730 | valid font property name listed below: |
| 3731 | |
| 3732 | `:family', `:weight', `:slant', `:width' |
| 3733 | |
| 3734 | They are the same as face attributes of the same name. See |
| 3735 | `set-face-attribute'. |
| 3736 | |
| 3737 | `:foundry' |
| 3738 | |
| 3739 | VALUE must be a string or a symbol specifying the font foundry, e.g. ``misc''. |
| 3740 | |
| 3741 | `:adstyle' |
| 3742 | |
| 3743 | VALUE must be a string or a symbol specifying the additional |
| 3744 | typographic style information of a font, e.g. ``sans''. |
| 3745 | |
| 3746 | `:registry' |
| 3747 | |
| 3748 | VALUE must be a string or a symbol specifying the charset registry and |
| 3749 | encoding of a font, e.g. ``iso8859-1''. |
| 3750 | |
| 3751 | `:size' |
| 3752 | |
| 3753 | VALUE must be a non-negative integer or a floating point number |
| 3754 | specifying the font size. It specifies the font size in pixels (if |
| 3755 | VALUE is an integer), or in points (if VALUE is a float). |
| 3756 | |
| 3757 | `:name' |
| 3758 | |
| 3759 | VALUE must be a string of XLFD-style or fontconfig-style font name. |
| 3760 | |
| 3761 | `:script' |
| 3762 | |
| 3763 | VALUE must be a symbol representing a script that the font must |
| 3764 | support. It may be a symbol representing a subgroup of a script |
| 3765 | listed in the variable `script-representative-chars'. |
| 3766 | |
| 3767 | `:lang' |
| 3768 | |
| 3769 | VALUE must be a symbol of two-letter ISO-639 language names, |
| 3770 | e.g. `ja'. |
| 3771 | |
| 3772 | `:otf' |
| 3773 | |
| 3774 | VALUE must be a list (SCRIPT-TAG LANGSYS-TAG GSUB [ GPOS ]) to specify |
| 3775 | required OpenType features. |
| 3776 | |
| 3777 | SCRIPT-TAG: OpenType script tag symbol (e.g. `deva'). |
| 3778 | LANGSYS-TAG: OpenType language system tag symbol, |
| 3779 | or nil for the default language system. |
| 3780 | GSUB: List of OpenType GSUB feature tag symbols, or nil if none required. |
| 3781 | GPOS: List of OpenType GPOS feature tag symbols, or nil if none required. |
| 3782 | |
| 3783 | GSUB and GPOS may contain `nil' element. In such a case, the font |
| 3784 | must not have any of the remaining elements. |
| 3785 | |
| 3786 | For instance, if the VALUE is `(thai nil nil (mark))', the font must |
| 3787 | be an OpenType font whose GPOS table of `thai' script's default |
| 3788 | language system must contain `mark' feature. |
| 3789 | |
| 3790 | usage: (font-spec ARGS...) */) |
| 3791 | (ptrdiff_t nargs, Lisp_Object *args) |
| 3792 | { |
| 3793 | Lisp_Object spec = font_make_spec (); |
| 3794 | ptrdiff_t i; |
| 3795 | |
| 3796 | for (i = 0; i < nargs; i += 2) |
| 3797 | { |
| 3798 | Lisp_Object key = args[i], val; |
| 3799 | |
| 3800 | CHECK_SYMBOL (key); |
| 3801 | if (i + 1 >= nargs) |
| 3802 | error ("No value for key `%s'", SDATA (SYMBOL_NAME (key))); |
| 3803 | val = args[i + 1]; |
| 3804 | |
| 3805 | if (EQ (key, QCname)) |
| 3806 | { |
| 3807 | CHECK_STRING (val); |
| 3808 | font_parse_name (SSDATA (val), spec); |
| 3809 | font_put_extra (spec, key, val); |
| 3810 | } |
| 3811 | else |
| 3812 | { |
| 3813 | int idx = get_font_prop_index (key); |
| 3814 | |
| 3815 | if (idx >= 0) |
| 3816 | { |
| 3817 | val = font_prop_validate (idx, Qnil, val); |
| 3818 | if (idx < FONT_EXTRA_INDEX) |
| 3819 | ASET (spec, idx, val); |
| 3820 | else |
| 3821 | font_put_extra (spec, key, val); |
| 3822 | } |
| 3823 | else |
| 3824 | font_put_extra (spec, key, font_prop_validate (0, key, val)); |
| 3825 | } |
| 3826 | } |
| 3827 | return spec; |
| 3828 | } |
| 3829 | |
| 3830 | /* Return a copy of FONT as a font-spec. */ |
| 3831 | Lisp_Object |
| 3832 | copy_font_spec (Lisp_Object font) |
| 3833 | { |
| 3834 | Lisp_Object new_spec, tail, prev, extra; |
| 3835 | int i; |
| 3836 | |
| 3837 | CHECK_FONT (font); |
| 3838 | new_spec = font_make_spec (); |
| 3839 | for (i = 1; i < FONT_EXTRA_INDEX; i++) |
| 3840 | ASET (new_spec, i, AREF (font, i)); |
| 3841 | extra = Fcopy_alist (AREF (font, FONT_EXTRA_INDEX)); |
| 3842 | /* We must remove :font-entity property. */ |
| 3843 | for (prev = Qnil, tail = extra; CONSP (tail); prev = tail, tail = XCDR (tail)) |
| 3844 | if (EQ (XCAR (XCAR (tail)), QCfont_entity)) |
| 3845 | { |
| 3846 | if (NILP (prev)) |
| 3847 | extra = XCDR (extra); |
| 3848 | else |
| 3849 | XSETCDR (prev, XCDR (tail)); |
| 3850 | break; |
| 3851 | } |
| 3852 | ASET (new_spec, FONT_EXTRA_INDEX, extra); |
| 3853 | return new_spec; |
| 3854 | } |
| 3855 | |
| 3856 | /* Merge font-specs FROM and TO, and return a new font-spec. |
| 3857 | Every specified property in FROM overrides the corresponding |
| 3858 | property in TO. */ |
| 3859 | Lisp_Object |
| 3860 | merge_font_spec (Lisp_Object from, Lisp_Object to) |
| 3861 | { |
| 3862 | Lisp_Object extra, tail; |
| 3863 | int i; |
| 3864 | |
| 3865 | CHECK_FONT (from); |
| 3866 | CHECK_FONT (to); |
| 3867 | to = copy_font_spec (to); |
| 3868 | for (i = 0; i < FONT_EXTRA_INDEX; i++) |
| 3869 | ASET (to, i, AREF (from, i)); |
| 3870 | extra = AREF (to, FONT_EXTRA_INDEX); |
| 3871 | for (tail = AREF (from, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
| 3872 | if (! EQ (XCAR (XCAR (tail)), Qfont_entity)) |
| 3873 | { |
| 3874 | Lisp_Object slot = assq_no_quit (XCAR (XCAR (tail)), extra); |
| 3875 | |
| 3876 | if (! NILP (slot)) |
| 3877 | XSETCDR (slot, XCDR (XCAR (tail))); |
| 3878 | else |
| 3879 | extra = Fcons (Fcons (XCAR (XCAR (tail)), XCDR (XCAR (tail))), extra); |
| 3880 | } |
| 3881 | ASET (to, FONT_EXTRA_INDEX, extra); |
| 3882 | return to; |
| 3883 | } |
| 3884 | |
| 3885 | DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0, |
| 3886 | doc: /* Return the value of FONT's property KEY. |
| 3887 | FONT is a font-spec, a font-entity, or a font-object. |
| 3888 | KEY is any symbol, but these are reserved for specific meanings: |
| 3889 | :family, :weight, :slant, :width, :foundry, :adstyle, :registry, |
| 3890 | :size, :name, :script, :otf |
| 3891 | See the documentation of `font-spec' for their meanings. |
| 3892 | In addition, if FONT is a font-entity or a font-object, values of |
| 3893 | :script and :otf are different from those of a font-spec as below: |
| 3894 | |
| 3895 | The value of :script may be a list of scripts that are supported by the font. |
| 3896 | |
| 3897 | The value of :otf is a cons (GSUB . GPOS) where GSUB and GPOS are lists |
| 3898 | representing the OpenType features supported by the font by this form: |
| 3899 | ((SCRIPT (LANGSYS FEATURE ...) ...) ...) |
| 3900 | SCRIPT, LANGSYS, and FEATURE are all symbols representing OpenType |
| 3901 | Layout tags. */) |
| 3902 | (Lisp_Object font, Lisp_Object key) |
| 3903 | { |
| 3904 | int idx; |
| 3905 | Lisp_Object val; |
| 3906 | |
| 3907 | CHECK_FONT (font); |
| 3908 | CHECK_SYMBOL (key); |
| 3909 | |
| 3910 | idx = get_font_prop_index (key); |
| 3911 | if (idx >= FONT_WEIGHT_INDEX && idx <= FONT_WIDTH_INDEX) |
| 3912 | return font_style_symbolic (font, idx, 0); |
| 3913 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 3914 | return AREF (font, idx); |
| 3915 | val = Fassq (key, AREF (font, FONT_EXTRA_INDEX)); |
| 3916 | if (NILP (val) && EQ (key, QCotf) && FONT_OBJECT_P (font)) |
| 3917 | { |
| 3918 | struct font *fontp = XFONT_OBJECT (font); |
| 3919 | |
| 3920 | if (fontp->driver->otf_capability) |
| 3921 | val = fontp->driver->otf_capability (fontp); |
| 3922 | else |
| 3923 | val = Fcons (Qnil, Qnil); |
| 3924 | } |
| 3925 | else |
| 3926 | val = Fcdr (val); |
| 3927 | return val; |
| 3928 | } |
| 3929 | |
| 3930 | #ifdef HAVE_WINDOW_SYSTEM |
| 3931 | |
| 3932 | DEFUN ("font-face-attributes", Ffont_face_attributes, Sfont_face_attributes, 1, 2, 0, |
| 3933 | doc: /* Return a plist of face attributes generated by FONT. |
| 3934 | FONT is a font name, a font-spec, a font-entity, or a font-object. |
| 3935 | The return value is a list of the form |
| 3936 | |
| 3937 | \(:family FAMILY :height HEIGHT :weight WEIGHT :slant SLANT :width WIDTH) |
| 3938 | |
| 3939 | where FAMILY, HEIGHT, WEIGHT, SLANT, and WIDTH are face attribute values |
| 3940 | compatible with `set-face-attribute'. Some of these key-attribute pairs |
| 3941 | may be omitted from the list if they are not specified by FONT. |
| 3942 | |
| 3943 | The optional argument FRAME specifies the frame that the face attributes |
| 3944 | are to be displayed on. If omitted, the selected frame is used. */) |
| 3945 | (Lisp_Object font, Lisp_Object frame) |
| 3946 | { |
| 3947 | struct frame *f; |
| 3948 | Lisp_Object plist[10]; |
| 3949 | Lisp_Object val; |
| 3950 | int n = 0; |
| 3951 | |
| 3952 | if (NILP (frame)) |
| 3953 | frame = selected_frame; |
| 3954 | CHECK_LIVE_FRAME (frame); |
| 3955 | f = XFRAME (frame); |
| 3956 | |
| 3957 | if (STRINGP (font)) |
| 3958 | { |
| 3959 | int fontset = fs_query_fontset (font, 0); |
| 3960 | Lisp_Object name = font; |
| 3961 | if (fontset >= 0) |
| 3962 | font = fontset_ascii (fontset); |
| 3963 | font = font_spec_from_name (name); |
| 3964 | if (! FONTP (font)) |
| 3965 | signal_error ("Invalid font name", name); |
| 3966 | } |
| 3967 | else if (! FONTP (font)) |
| 3968 | signal_error ("Invalid font object", font); |
| 3969 | |
| 3970 | val = AREF (font, FONT_FAMILY_INDEX); |
| 3971 | if (! NILP (val)) |
| 3972 | { |
| 3973 | plist[n++] = QCfamily; |
| 3974 | plist[n++] = SYMBOL_NAME (val); |
| 3975 | } |
| 3976 | |
| 3977 | val = AREF (font, FONT_SIZE_INDEX); |
| 3978 | if (INTEGERP (val)) |
| 3979 | { |
| 3980 | Lisp_Object font_dpi = AREF (font, FONT_DPI_INDEX); |
| 3981 | int dpi = INTEGERP (font_dpi) ? XINT (font_dpi) : f->resy; |
| 3982 | plist[n++] = QCheight; |
| 3983 | plist[n++] = make_number (PIXEL_TO_POINT (XINT (val) * 10, dpi)); |
| 3984 | } |
| 3985 | else if (FLOATP (val)) |
| 3986 | { |
| 3987 | plist[n++] = QCheight; |
| 3988 | plist[n++] = make_number (10 * (int) XFLOAT_DATA (val)); |
| 3989 | } |
| 3990 | |
| 3991 | val = FONT_WEIGHT_FOR_FACE (font); |
| 3992 | if (! NILP (val)) |
| 3993 | { |
| 3994 | plist[n++] = QCweight; |
| 3995 | plist[n++] = val; |
| 3996 | } |
| 3997 | |
| 3998 | val = FONT_SLANT_FOR_FACE (font); |
| 3999 | if (! NILP (val)) |
| 4000 | { |
| 4001 | plist[n++] = QCslant; |
| 4002 | plist[n++] = val; |
| 4003 | } |
| 4004 | |
| 4005 | val = FONT_WIDTH_FOR_FACE (font); |
| 4006 | if (! NILP (val)) |
| 4007 | { |
| 4008 | plist[n++] = QCwidth; |
| 4009 | plist[n++] = val; |
| 4010 | } |
| 4011 | |
| 4012 | return Flist (n, plist); |
| 4013 | } |
| 4014 | |
| 4015 | #endif |
| 4016 | |
| 4017 | DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0, |
| 4018 | doc: /* Set one property of FONT: give property KEY value VAL. |
| 4019 | FONT is a font-spec, a font-entity, or a font-object. |
| 4020 | |
| 4021 | If FONT is a font-spec, KEY can be any symbol. But if KEY is the one |
| 4022 | accepted by the function `font-spec' (which see), VAL must be what |
| 4023 | allowed in `font-spec'. |
| 4024 | |
| 4025 | If FONT is a font-entity or a font-object, KEY must not be the one |
| 4026 | accepted by `font-spec'. */) |
| 4027 | (Lisp_Object font, Lisp_Object prop, Lisp_Object val) |
| 4028 | { |
| 4029 | int idx; |
| 4030 | |
| 4031 | idx = get_font_prop_index (prop); |
| 4032 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 4033 | { |
| 4034 | CHECK_FONT_SPEC (font); |
| 4035 | ASET (font, idx, font_prop_validate (idx, Qnil, val)); |
| 4036 | } |
| 4037 | else |
| 4038 | { |
| 4039 | if (EQ (prop, QCname) |
| 4040 | || EQ (prop, QCscript) |
| 4041 | || EQ (prop, QClang) |
| 4042 | || EQ (prop, QCotf)) |
| 4043 | CHECK_FONT_SPEC (font); |
| 4044 | else |
| 4045 | CHECK_FONT (font); |
| 4046 | font_put_extra (font, prop, font_prop_validate (0, prop, val)); |
| 4047 | } |
| 4048 | return val; |
| 4049 | } |
| 4050 | |
| 4051 | DEFUN ("list-fonts", Flist_fonts, Slist_fonts, 1, 4, 0, |
| 4052 | doc: /* List available fonts matching FONT-SPEC on the current frame. |
| 4053 | Optional 2nd argument FRAME specifies the target frame. |
| 4054 | Optional 3rd argument NUM, if non-nil, limits the number of returned fonts. |
| 4055 | Optional 4th argument PREFER, if non-nil, is a font-spec to |
| 4056 | control the order of the returned list. Fonts are sorted by |
| 4057 | how close they are to PREFER. */) |
| 4058 | (Lisp_Object font_spec, Lisp_Object frame, Lisp_Object num, Lisp_Object prefer) |
| 4059 | { |
| 4060 | Lisp_Object vec, list; |
| 4061 | int n = 0; |
| 4062 | |
| 4063 | if (NILP (frame)) |
| 4064 | frame = selected_frame; |
| 4065 | CHECK_LIVE_FRAME (frame); |
| 4066 | CHECK_FONT_SPEC (font_spec); |
| 4067 | if (! NILP (num)) |
| 4068 | { |
| 4069 | CHECK_NUMBER (num); |
| 4070 | n = XINT (num); |
| 4071 | if (n <= 0) |
| 4072 | return Qnil; |
| 4073 | } |
| 4074 | if (! NILP (prefer)) |
| 4075 | CHECK_FONT_SPEC (prefer); |
| 4076 | |
| 4077 | list = font_list_entities (frame, font_spec); |
| 4078 | if (NILP (list)) |
| 4079 | return Qnil; |
| 4080 | if (NILP (XCDR (list)) |
| 4081 | && ASIZE (XCAR (list)) == 1) |
| 4082 | return Fcons (AREF (XCAR (list), 0), Qnil); |
| 4083 | |
| 4084 | if (! NILP (prefer)) |
| 4085 | vec = font_sort_entities (list, prefer, frame, 0); |
| 4086 | else |
| 4087 | vec = font_vconcat_entity_vectors (list); |
| 4088 | if (n == 0 || n >= ASIZE (vec)) |
| 4089 | { |
| 4090 | Lisp_Object args[2]; |
| 4091 | |
| 4092 | args[0] = vec; |
| 4093 | args[1] = Qnil; |
| 4094 | list = Fappend (2, args); |
| 4095 | } |
| 4096 | else |
| 4097 | { |
| 4098 | for (list = Qnil, n--; n >= 0; n--) |
| 4099 | list = Fcons (AREF (vec, n), list); |
| 4100 | } |
| 4101 | return list; |
| 4102 | } |
| 4103 | |
| 4104 | DEFUN ("font-family-list", Ffont_family_list, Sfont_family_list, 0, 1, 0, |
| 4105 | doc: /* List available font families on the current frame. |
| 4106 | Optional argument FRAME, if non-nil, specifies the target frame. */) |
| 4107 | (Lisp_Object frame) |
| 4108 | { |
| 4109 | FRAME_PTR f; |
| 4110 | struct font_driver_list *driver_list; |
| 4111 | Lisp_Object list; |
| 4112 | |
| 4113 | if (NILP (frame)) |
| 4114 | frame = selected_frame; |
| 4115 | CHECK_LIVE_FRAME (frame); |
| 4116 | f = XFRAME (frame); |
| 4117 | list = Qnil; |
| 4118 | for (driver_list = f->font_driver_list; driver_list; |
| 4119 | driver_list = driver_list->next) |
| 4120 | if (driver_list->driver->list_family) |
| 4121 | { |
| 4122 | Lisp_Object val = driver_list->driver->list_family (frame); |
| 4123 | Lisp_Object tail = list; |
| 4124 | |
| 4125 | for (; CONSP (val); val = XCDR (val)) |
| 4126 | if (NILP (Fmemq (XCAR (val), tail)) |
| 4127 | && SYMBOLP (XCAR (val))) |
| 4128 | list = Fcons (SYMBOL_NAME (XCAR (val)), list); |
| 4129 | } |
| 4130 | return list; |
| 4131 | } |
| 4132 | |
| 4133 | DEFUN ("find-font", Ffind_font, Sfind_font, 1, 2, 0, |
| 4134 | doc: /* Return a font-entity matching with FONT-SPEC on the current frame. |
| 4135 | Optional 2nd argument FRAME, if non-nil, specifies the target frame. */) |
| 4136 | (Lisp_Object font_spec, Lisp_Object frame) |
| 4137 | { |
| 4138 | Lisp_Object val = Flist_fonts (font_spec, frame, make_number (1), Qnil); |
| 4139 | |
| 4140 | if (CONSP (val)) |
| 4141 | val = XCAR (val); |
| 4142 | return val; |
| 4143 | } |
| 4144 | |
| 4145 | DEFUN ("font-xlfd-name", Ffont_xlfd_name, Sfont_xlfd_name, 1, 2, 0, |
| 4146 | doc: /* Return XLFD name of FONT. |
| 4147 | FONT is a font-spec, font-entity, or font-object. |
| 4148 | If the name is too long for XLFD (maximum 255 chars), return nil. |
| 4149 | If the 2nd optional arg FOLD-WILDCARDS is non-nil, |
| 4150 | the consecutive wildcards are folded into one. */) |
| 4151 | (Lisp_Object font, Lisp_Object fold_wildcards) |
| 4152 | { |
| 4153 | char name[256]; |
| 4154 | int pixel_size = 0; |
| 4155 | |
| 4156 | CHECK_FONT (font); |
| 4157 | |
| 4158 | if (FONT_OBJECT_P (font)) |
| 4159 | { |
| 4160 | Lisp_Object font_name = AREF (font, FONT_NAME_INDEX); |
| 4161 | |
| 4162 | if (STRINGP (font_name) |
| 4163 | && SDATA (font_name)[0] == '-') |
| 4164 | { |
| 4165 | if (NILP (fold_wildcards)) |
| 4166 | return font_name; |
| 4167 | strcpy (name, SSDATA (font_name)); |
| 4168 | goto done; |
| 4169 | } |
| 4170 | pixel_size = XFONT_OBJECT (font)->pixel_size; |
| 4171 | } |
| 4172 | if (font_unparse_xlfd (font, pixel_size, name, 256) < 0) |
| 4173 | return Qnil; |
| 4174 | done: |
| 4175 | if (! NILP (fold_wildcards)) |
| 4176 | { |
| 4177 | char *p0 = name, *p1; |
| 4178 | |
| 4179 | while ((p1 = strstr (p0, "-*-*"))) |
| 4180 | { |
| 4181 | strcpy (p1, p1 + 2); |
| 4182 | p0 = p1; |
| 4183 | } |
| 4184 | } |
| 4185 | |
| 4186 | return build_string (name); |
| 4187 | } |
| 4188 | |
| 4189 | DEFUN ("clear-font-cache", Fclear_font_cache, Sclear_font_cache, 0, 0, 0, |
| 4190 | doc: /* Clear font cache. */) |
| 4191 | (void) |
| 4192 | { |
| 4193 | Lisp_Object list, frame; |
| 4194 | |
| 4195 | FOR_EACH_FRAME (list, frame) |
| 4196 | { |
| 4197 | FRAME_PTR f = XFRAME (frame); |
| 4198 | struct font_driver_list *driver_list = f->font_driver_list; |
| 4199 | |
| 4200 | for (; driver_list; driver_list = driver_list->next) |
| 4201 | if (driver_list->on) |
| 4202 | { |
| 4203 | Lisp_Object cache = driver_list->driver->get_cache (f); |
| 4204 | Lisp_Object val, tmp; |
| 4205 | |
| 4206 | val = XCDR (cache); |
| 4207 | while (! NILP (val) |
| 4208 | && ! EQ (XCAR (XCAR (val)), driver_list->driver->type)) |
| 4209 | val = XCDR (val); |
| 4210 | font_assert (! NILP (val)); |
| 4211 | tmp = XCDR (XCAR (val)); |
| 4212 | if (XINT (XCAR (tmp)) == 0) |
| 4213 | { |
| 4214 | font_clear_cache (f, XCAR (val), driver_list->driver); |
| 4215 | XSETCDR (cache, XCDR (val)); |
| 4216 | } |
| 4217 | } |
| 4218 | } |
| 4219 | |
| 4220 | return Qnil; |
| 4221 | } |
| 4222 | |
| 4223 | \f |
| 4224 | void |
| 4225 | font_fill_lglyph_metrics (Lisp_Object glyph, Lisp_Object font_object) |
| 4226 | { |
| 4227 | struct font *font = XFONT_OBJECT (font_object); |
| 4228 | unsigned code; |
| 4229 | /* ecode used in LGLYPH_SET_CODE to avoid compiler warnings. */ |
| 4230 | EMACS_INT ecode = font->driver->encode_char (font, LGLYPH_CHAR (glyph)); |
| 4231 | struct font_metrics metrics; |
| 4232 | |
| 4233 | LGLYPH_SET_CODE (glyph, ecode); |
| 4234 | code = ecode; |
| 4235 | font->driver->text_extents (font, &code, 1, &metrics); |
| 4236 | LGLYPH_SET_LBEARING (glyph, metrics.lbearing); |
| 4237 | LGLYPH_SET_RBEARING (glyph, metrics.rbearing); |
| 4238 | LGLYPH_SET_WIDTH (glyph, metrics.width); |
| 4239 | LGLYPH_SET_ASCENT (glyph, metrics.ascent); |
| 4240 | LGLYPH_SET_DESCENT (glyph, metrics.descent); |
| 4241 | } |
| 4242 | |
| 4243 | |
| 4244 | DEFUN ("font-shape-gstring", Ffont_shape_gstring, Sfont_shape_gstring, 1, 1, 0, |
| 4245 | doc: /* Shape the glyph-string GSTRING. |
| 4246 | Shaping means substituting glyphs and/or adjusting positions of glyphs |
| 4247 | to get the correct visual image of character sequences set in the |
| 4248 | header of the glyph-string. |
| 4249 | |
| 4250 | If the shaping was successful, the value is GSTRING itself or a newly |
| 4251 | created glyph-string. Otherwise, the value is nil. */) |
| 4252 | (Lisp_Object gstring) |
| 4253 | { |
| 4254 | struct font *font; |
| 4255 | Lisp_Object font_object, n, glyph; |
| 4256 | EMACS_INT i, j, from, to; |
| 4257 | |
| 4258 | if (! composition_gstring_p (gstring)) |
| 4259 | signal_error ("Invalid glyph-string: ", gstring); |
| 4260 | if (! NILP (LGSTRING_ID (gstring))) |
| 4261 | return gstring; |
| 4262 | font_object = LGSTRING_FONT (gstring); |
| 4263 | CHECK_FONT_OBJECT (font_object); |
| 4264 | font = XFONT_OBJECT (font_object); |
| 4265 | if (! font->driver->shape) |
| 4266 | return Qnil; |
| 4267 | |
| 4268 | /* Try at most three times with larger gstring each time. */ |
| 4269 | for (i = 0; i < 3; i++) |
| 4270 | { |
| 4271 | n = font->driver->shape (gstring); |
| 4272 | if (INTEGERP (n)) |
| 4273 | break; |
| 4274 | gstring = larger_vector (gstring, |
| 4275 | ASIZE (gstring) + LGSTRING_GLYPH_LEN (gstring), |
| 4276 | Qnil); |
| 4277 | } |
| 4278 | if (i == 3 || XINT (n) == 0) |
| 4279 | return Qnil; |
| 4280 | if (XINT (n) < LGSTRING_GLYPH_LEN (gstring)) |
| 4281 | LGSTRING_SET_GLYPH (gstring, XINT (n), Qnil); |
| 4282 | |
| 4283 | glyph = LGSTRING_GLYPH (gstring, 0); |
| 4284 | from = LGLYPH_FROM (glyph); |
| 4285 | to = LGLYPH_TO (glyph); |
| 4286 | for (i = 1, j = 0; i < LGSTRING_GLYPH_LEN (gstring); i++) |
| 4287 | { |
| 4288 | Lisp_Object this = LGSTRING_GLYPH (gstring, i); |
| 4289 | |
| 4290 | if (NILP (this)) |
| 4291 | break; |
| 4292 | if (NILP (LGLYPH_ADJUSTMENT (this))) |
| 4293 | { |
| 4294 | if (j < i - 1) |
| 4295 | for (; j < i; j++) |
| 4296 | { |
| 4297 | glyph = LGSTRING_GLYPH (gstring, j); |
| 4298 | LGLYPH_SET_FROM (glyph, from); |
| 4299 | LGLYPH_SET_TO (glyph, to); |
| 4300 | } |
| 4301 | from = LGLYPH_FROM (this); |
| 4302 | to = LGLYPH_TO (this); |
| 4303 | j = i; |
| 4304 | } |
| 4305 | else |
| 4306 | { |
| 4307 | if (from > LGLYPH_FROM (this)) |
| 4308 | from = LGLYPH_FROM (this); |
| 4309 | if (to < LGLYPH_TO (this)) |
| 4310 | to = LGLYPH_TO (this); |
| 4311 | } |
| 4312 | } |
| 4313 | if (j < i - 1) |
| 4314 | for (; j < i; j++) |
| 4315 | { |
| 4316 | glyph = LGSTRING_GLYPH (gstring, j); |
| 4317 | LGLYPH_SET_FROM (glyph, from); |
| 4318 | LGLYPH_SET_TO (glyph, to); |
| 4319 | } |
| 4320 | return composition_gstring_put_cache (gstring, XINT (n)); |
| 4321 | } |
| 4322 | |
| 4323 | DEFUN ("font-variation-glyphs", Ffont_variation_glyphs, Sfont_variation_glyphs, |
| 4324 | 2, 2, 0, |
| 4325 | doc: /* Return a list of variation glyphs for CHAR in FONT-OBJECT. |
| 4326 | Each element of the value is a cons (VARIATION-SELECTOR . GLYPH-ID), |
| 4327 | where |
| 4328 | VARIATION-SELECTOR is a character code of variation selection |
| 4329 | (#xFE00..#xFE0F or #xE0100..#xE01EF) |
| 4330 | GLYPH-ID is a glyph code of the corresponding variation glyph. */) |
| 4331 | (Lisp_Object font_object, Lisp_Object character) |
| 4332 | { |
| 4333 | unsigned variations[256]; |
| 4334 | struct font *font; |
| 4335 | int i, n; |
| 4336 | Lisp_Object val; |
| 4337 | |
| 4338 | CHECK_FONT_OBJECT (font_object); |
| 4339 | CHECK_CHARACTER (character); |
| 4340 | font = XFONT_OBJECT (font_object); |
| 4341 | if (! font->driver->get_variation_glyphs) |
| 4342 | return Qnil; |
| 4343 | n = font->driver->get_variation_glyphs (font, XINT (character), variations); |
| 4344 | if (! n) |
| 4345 | return Qnil; |
| 4346 | val = Qnil; |
| 4347 | for (i = 0; i < 255; i++) |
| 4348 | if (variations[i]) |
| 4349 | { |
| 4350 | int vs = (i < 16 ? 0xFE00 + i : 0xE0100 + (i - 16)); |
| 4351 | Lisp_Object code = INTEGER_TO_CONS (variations[i]); |
| 4352 | val = Fcons (Fcons (make_number (vs), code), val); |
| 4353 | } |
| 4354 | return val; |
| 4355 | } |
| 4356 | |
| 4357 | #if 0 |
| 4358 | |
| 4359 | DEFUN ("font-drive-otf", Ffont_drive_otf, Sfont_drive_otf, 6, 6, 0, |
| 4360 | doc: /* Apply OpenType features on glyph-string GSTRING-IN. |
| 4361 | OTF-FEATURES specifies which features to apply in this format: |
| 4362 | (SCRIPT LANGSYS GSUB GPOS) |
| 4363 | where |
| 4364 | SCRIPT is a symbol specifying a script tag of OpenType, |
| 4365 | LANGSYS is a symbol specifying a langsys tag of OpenType, |
| 4366 | GSUB and GPOS, if non-nil, are lists of symbols specifying feature tags. |
| 4367 | |
| 4368 | If LANGYS is nil, the default langsys is selected. |
| 4369 | |
| 4370 | The features are applied in the order they appear in the list. The |
| 4371 | symbol `*' means to apply all available features not present in this |
| 4372 | list, and the remaining features are ignored. For instance, (vatu |
| 4373 | pstf * haln) is to apply vatu and pstf in this order, then to apply |
| 4374 | all available features other than vatu, pstf, and haln. |
| 4375 | |
| 4376 | The features are applied to the glyphs in the range FROM and TO of |
| 4377 | the glyph-string GSTRING-IN. |
| 4378 | |
| 4379 | If some feature is actually applicable, the resulting glyphs are |
| 4380 | produced in the glyph-string GSTRING-OUT from the index INDEX. In |
| 4381 | this case, the value is the number of produced glyphs. |
| 4382 | |
| 4383 | If no feature is applicable, no glyph is produced in GSTRING-OUT, and |
| 4384 | the value is 0. |
| 4385 | |
| 4386 | If GSTRING-OUT is too short to hold produced glyphs, no glyphs are |
| 4387 | produced in GSTRING-OUT, and the value is nil. |
| 4388 | |
| 4389 | See the documentation of `composition-get-gstring' for the format of |
| 4390 | glyph-string. */) |
| 4391 | (Lisp_Object otf_features, Lisp_Object gstring_in, Lisp_Object from, Lisp_Object to, Lisp_Object gstring_out, Lisp_Object index) |
| 4392 | { |
| 4393 | Lisp_Object font_object = LGSTRING_FONT (gstring_in); |
| 4394 | Lisp_Object val; |
| 4395 | struct font *font; |
| 4396 | int len, num; |
| 4397 | |
| 4398 | check_otf_features (otf_features); |
| 4399 | CHECK_FONT_OBJECT (font_object); |
| 4400 | font = XFONT_OBJECT (font_object); |
| 4401 | if (! font->driver->otf_drive) |
| 4402 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4403 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4404 | CHECK_CONS (otf_features); |
| 4405 | CHECK_SYMBOL (XCAR (otf_features)); |
| 4406 | val = XCDR (otf_features); |
| 4407 | CHECK_SYMBOL (XCAR (val)); |
| 4408 | val = XCDR (otf_features); |
| 4409 | if (! NILP (val)) |
| 4410 | CHECK_CONS (val); |
| 4411 | len = check_gstring (gstring_in); |
| 4412 | CHECK_VECTOR (gstring_out); |
| 4413 | CHECK_NATNUM (from); |
| 4414 | CHECK_NATNUM (to); |
| 4415 | CHECK_NATNUM (index); |
| 4416 | |
| 4417 | if (XINT (from) >= XINT (to) || XINT (to) > len) |
| 4418 | args_out_of_range_3 (from, to, make_number (len)); |
| 4419 | if (XINT (index) >= ASIZE (gstring_out)) |
| 4420 | args_out_of_range (index, make_number (ASIZE (gstring_out))); |
| 4421 | num = font->driver->otf_drive (font, otf_features, |
| 4422 | gstring_in, XINT (from), XINT (to), |
| 4423 | gstring_out, XINT (index), 0); |
| 4424 | if (num < 0) |
| 4425 | return Qnil; |
| 4426 | return make_number (num); |
| 4427 | } |
| 4428 | |
| 4429 | DEFUN ("font-otf-alternates", Ffont_otf_alternates, Sfont_otf_alternates, |
| 4430 | 3, 3, 0, |
| 4431 | doc: /* Return a list of alternate glyphs of CHARACTER in FONT-OBJECT. |
| 4432 | OTF-FEATURES specifies which features of the font FONT-OBJECT to apply |
| 4433 | in this format: |
| 4434 | (SCRIPT LANGSYS FEATURE ...) |
| 4435 | See the documentation of `font-drive-otf' for more detail. |
| 4436 | |
| 4437 | The value is a list of cons cells of the format (GLYPH-ID . CHARACTER), |
| 4438 | where GLYPH-ID is a glyph index of the font, and CHARACTER is a |
| 4439 | character code corresponding to the glyph or nil if there's no |
| 4440 | corresponding character. */) |
| 4441 | (Lisp_Object font_object, Lisp_Object character, Lisp_Object otf_features) |
| 4442 | { |
| 4443 | struct font *font; |
| 4444 | Lisp_Object gstring_in, gstring_out, g; |
| 4445 | Lisp_Object alternates; |
| 4446 | int i, num; |
| 4447 | |
| 4448 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4449 | if (! font->driver->otf_drive) |
| 4450 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4451 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4452 | CHECK_CHARACTER (character); |
| 4453 | CHECK_CONS (otf_features); |
| 4454 | |
| 4455 | gstring_in = Ffont_make_gstring (font_object, make_number (1)); |
| 4456 | g = LGSTRING_GLYPH (gstring_in, 0); |
| 4457 | LGLYPH_SET_CHAR (g, XINT (character)); |
| 4458 | gstring_out = Ffont_make_gstring (font_object, make_number (10)); |
| 4459 | while ((num = font->driver->otf_drive (font, otf_features, gstring_in, 0, 1, |
| 4460 | gstring_out, 0, 1)) < 0) |
| 4461 | gstring_out = Ffont_make_gstring (font_object, |
| 4462 | make_number (ASIZE (gstring_out) * 2)); |
| 4463 | alternates = Qnil; |
| 4464 | for (i = 0; i < num; i++) |
| 4465 | { |
| 4466 | Lisp_Object g = LGSTRING_GLYPH (gstring_out, i); |
| 4467 | int c = LGLYPH_CHAR (g); |
| 4468 | unsigned code = LGLYPH_CODE (g); |
| 4469 | |
| 4470 | alternates = Fcons (Fcons (make_number (code), |
| 4471 | c > 0 ? make_number (c) : Qnil), |
| 4472 | alternates); |
| 4473 | } |
| 4474 | return Fnreverse (alternates); |
| 4475 | } |
| 4476 | #endif /* 0 */ |
| 4477 | |
| 4478 | #ifdef FONT_DEBUG |
| 4479 | |
| 4480 | DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0, |
| 4481 | doc: /* Open FONT-ENTITY. */) |
| 4482 | (Lisp_Object font_entity, Lisp_Object size, Lisp_Object frame) |
| 4483 | { |
| 4484 | int isize; |
| 4485 | |
| 4486 | CHECK_FONT_ENTITY (font_entity); |
| 4487 | if (NILP (frame)) |
| 4488 | frame = selected_frame; |
| 4489 | CHECK_LIVE_FRAME (frame); |
| 4490 | |
| 4491 | if (NILP (size)) |
| 4492 | isize = XINT (AREF (font_entity, FONT_SIZE_INDEX)); |
| 4493 | else |
| 4494 | { |
| 4495 | CHECK_NUMBER_OR_FLOAT (size); |
| 4496 | if (FLOATP (size)) |
| 4497 | isize = POINT_TO_PIXEL (XFLOAT_DATA (size), XFRAME (frame)->resy); |
| 4498 | else |
| 4499 | isize = XINT (size); |
| 4500 | if (isize == 0) |
| 4501 | isize = 120; |
| 4502 | } |
| 4503 | return font_open_entity (XFRAME (frame), font_entity, isize); |
| 4504 | } |
| 4505 | |
| 4506 | DEFUN ("close-font", Fclose_font, Sclose_font, 1, 2, 0, |
| 4507 | doc: /* Close FONT-OBJECT. */) |
| 4508 | (Lisp_Object font_object, Lisp_Object frame) |
| 4509 | { |
| 4510 | CHECK_FONT_OBJECT (font_object); |
| 4511 | if (NILP (frame)) |
| 4512 | frame = selected_frame; |
| 4513 | CHECK_LIVE_FRAME (frame); |
| 4514 | font_close_object (XFRAME (frame), font_object); |
| 4515 | return Qnil; |
| 4516 | } |
| 4517 | |
| 4518 | DEFUN ("query-font", Fquery_font, Squery_font, 1, 1, 0, |
| 4519 | doc: /* Return information about FONT-OBJECT. |
| 4520 | The value is a vector: |
| 4521 | [ NAME FILENAME PIXEL-SIZE SIZE ASCENT DESCENT SPACE-WIDTH AVERAGE-WIDTH |
| 4522 | CAPABILITY ] |
| 4523 | |
| 4524 | NAME is the font name, a string (or nil if the font backend doesn't |
| 4525 | provide a name). |
| 4526 | |
| 4527 | FILENAME is the font file name, a string (or nil if the font backend |
| 4528 | doesn't provide a file name). |
| 4529 | |
| 4530 | PIXEL-SIZE is a pixel size by which the font is opened. |
| 4531 | |
| 4532 | SIZE is a maximum advance width of the font in pixels. |
| 4533 | |
| 4534 | ASCENT, DESCENT, SPACE-WIDTH, AVERAGE-WIDTH are metrics of the font in |
| 4535 | pixels. |
| 4536 | |
| 4537 | CAPABILITY is a list whose first element is a symbol representing the |
| 4538 | font format \(x, opentype, truetype, type1, pcf, or bdf) and the |
| 4539 | remaining elements describe the details of the font capability. |
| 4540 | |
| 4541 | If the font is OpenType font, the form of the list is |
| 4542 | \(opentype GSUB GPOS) |
| 4543 | where GSUB shows which "GSUB" features the font supports, and GPOS |
| 4544 | shows which "GPOS" features the font supports. Both GSUB and GPOS are |
| 4545 | lists of the format: |
| 4546 | \((SCRIPT (LANGSYS FEATURE ...) ...) ...) |
| 4547 | |
| 4548 | If the font is not OpenType font, currently the length of the form is |
| 4549 | one. |
| 4550 | |
| 4551 | SCRIPT is a symbol representing OpenType script tag. |
| 4552 | |
| 4553 | LANGSYS is a symbol representing OpenType langsys tag, or nil |
| 4554 | representing the default langsys. |
| 4555 | |
| 4556 | FEATURE is a symbol representing OpenType feature tag. |
| 4557 | |
| 4558 | If the font is not OpenType font, CAPABILITY is nil. */) |
| 4559 | (Lisp_Object font_object) |
| 4560 | { |
| 4561 | struct font *font; |
| 4562 | Lisp_Object val; |
| 4563 | |
| 4564 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4565 | |
| 4566 | val = Fmake_vector (make_number (9), Qnil); |
| 4567 | ASET (val, 0, AREF (font_object, FONT_NAME_INDEX)); |
| 4568 | ASET (val, 1, AREF (font_object, FONT_FILE_INDEX)); |
| 4569 | ASET (val, 2, make_number (font->pixel_size)); |
| 4570 | ASET (val, 3, make_number (font->max_width)); |
| 4571 | ASET (val, 4, make_number (font->ascent)); |
| 4572 | ASET (val, 5, make_number (font->descent)); |
| 4573 | ASET (val, 6, make_number (font->space_width)); |
| 4574 | ASET (val, 7, make_number (font->average_width)); |
| 4575 | if (font->driver->otf_capability) |
| 4576 | ASET (val, 8, Fcons (Qopentype, font->driver->otf_capability (font))); |
| 4577 | return val; |
| 4578 | } |
| 4579 | |
| 4580 | DEFUN ("font-get-glyphs", Ffont_get_glyphs, Sfont_get_glyphs, 3, 4, 0, |
| 4581 | doc: |
| 4582 | /* Return a vector of FONT-OBJECT's glyphs for the specified characters. |
| 4583 | FROM and TO are positions (integers or markers) specifying a region |
| 4584 | of the current buffer. |
| 4585 | If the optional fourth arg OBJECT is not nil, it is a string or a |
| 4586 | vector containing the target characters. |
| 4587 | |
| 4588 | Each element is a vector containing information of a glyph in this format: |
| 4589 | [FROM-IDX TO-IDX C CODE WIDTH LBEARING RBEARING ASCENT DESCENT ADJUSTMENT] |
| 4590 | where |
| 4591 | FROM is an index numbers of a character the glyph corresponds to. |
| 4592 | TO is the same as FROM. |
| 4593 | C is the character of the glyph. |
| 4594 | CODE is the glyph-code of C in FONT-OBJECT. |
| 4595 | WIDTH thru DESCENT are the metrics (in pixels) of the glyph. |
| 4596 | ADJUSTMENT is always nil. |
| 4597 | If FONT-OBJECT doesn't have a glyph for a character, |
| 4598 | the corresponding element is nil. */) |
| 4599 | (Lisp_Object font_object, Lisp_Object from, Lisp_Object to, |
| 4600 | Lisp_Object object) |
| 4601 | { |
| 4602 | struct font *font; |
| 4603 | int i, len; |
| 4604 | Lisp_Object *chars, vec; |
| 4605 | USE_SAFE_ALLOCA; |
| 4606 | |
| 4607 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4608 | if (NILP (object)) |
| 4609 | { |
| 4610 | EMACS_INT charpos, bytepos; |
| 4611 | |
| 4612 | validate_region (&from, &to); |
| 4613 | if (EQ (from, to)) |
| 4614 | return Qnil; |
| 4615 | len = XFASTINT (to) - XFASTINT (from); |
| 4616 | SAFE_ALLOCA_LISP (chars, len); |
| 4617 | charpos = XFASTINT (from); |
| 4618 | bytepos = CHAR_TO_BYTE (charpos); |
| 4619 | for (i = 0; charpos < XFASTINT (to); i++) |
| 4620 | { |
| 4621 | int c; |
| 4622 | FETCH_CHAR_ADVANCE (c, charpos, bytepos); |
| 4623 | chars[i] = make_number (c); |
| 4624 | } |
| 4625 | } |
| 4626 | else if (STRINGP (object)) |
| 4627 | { |
| 4628 | const unsigned char *p; |
| 4629 | |
| 4630 | CHECK_NUMBER (from); |
| 4631 | CHECK_NUMBER (to); |
| 4632 | if (XINT (from) < 0 || XINT (from) > XINT (to) |
| 4633 | || XINT (to) > SCHARS (object)) |
| 4634 | args_out_of_range_3 (object, from, to); |
| 4635 | if (EQ (from, to)) |
| 4636 | return Qnil; |
| 4637 | len = XFASTINT (to) - XFASTINT (from); |
| 4638 | SAFE_ALLOCA_LISP (chars, len); |
| 4639 | p = SDATA (object); |
| 4640 | if (STRING_MULTIBYTE (object)) |
| 4641 | for (i = 0; i < len; i++) |
| 4642 | { |
| 4643 | int c = STRING_CHAR_ADVANCE (p); |
| 4644 | chars[i] = make_number (c); |
| 4645 | } |
| 4646 | else |
| 4647 | for (i = 0; i < len; i++) |
| 4648 | chars[i] = make_number (p[i]); |
| 4649 | } |
| 4650 | else |
| 4651 | { |
| 4652 | CHECK_VECTOR (object); |
| 4653 | CHECK_NUMBER (from); |
| 4654 | CHECK_NUMBER (to); |
| 4655 | if (XINT (from) < 0 || XINT (from) > XINT (to) |
| 4656 | || XINT (to) > ASIZE (object)) |
| 4657 | args_out_of_range_3 (object, from, to); |
| 4658 | if (EQ (from, to)) |
| 4659 | return Qnil; |
| 4660 | len = XFASTINT (to) - XFASTINT (from); |
| 4661 | for (i = 0; i < len; i++) |
| 4662 | { |
| 4663 | Lisp_Object elt = AREF (object, XFASTINT (from) + i); |
| 4664 | CHECK_CHARACTER (elt); |
| 4665 | } |
| 4666 | chars = &(AREF (object, XFASTINT (from))); |
| 4667 | } |
| 4668 | |
| 4669 | vec = Fmake_vector (make_number (len), Qnil); |
| 4670 | for (i = 0; i < len; i++) |
| 4671 | { |
| 4672 | Lisp_Object g; |
| 4673 | int c = XFASTINT (chars[i]); |
| 4674 | unsigned code; |
| 4675 | struct font_metrics metrics; |
| 4676 | |
| 4677 | code = font->driver->encode_char (font, c); |
| 4678 | if (code == FONT_INVALID_CODE) |
| 4679 | continue; |
| 4680 | g = Fmake_vector (make_number (LGLYPH_SIZE), Qnil); |
| 4681 | LGLYPH_SET_FROM (g, i); |
| 4682 | LGLYPH_SET_TO (g, i); |
| 4683 | LGLYPH_SET_CHAR (g, c); |
| 4684 | LGLYPH_SET_CODE (g, code); |
| 4685 | font->driver->text_extents (font, &code, 1, &metrics); |
| 4686 | LGLYPH_SET_WIDTH (g, metrics.width); |
| 4687 | LGLYPH_SET_LBEARING (g, metrics.lbearing); |
| 4688 | LGLYPH_SET_RBEARING (g, metrics.rbearing); |
| 4689 | LGLYPH_SET_ASCENT (g, metrics.ascent); |
| 4690 | LGLYPH_SET_DESCENT (g, metrics.descent); |
| 4691 | ASET (vec, i, g); |
| 4692 | } |
| 4693 | if (! VECTORP (object)) |
| 4694 | SAFE_FREE (); |
| 4695 | return vec; |
| 4696 | } |
| 4697 | |
| 4698 | DEFUN ("font-match-p", Ffont_match_p, Sfont_match_p, 2, 2, 0, |
| 4699 | doc: /* Return t if and only if font-spec SPEC matches with FONT. |
| 4700 | FONT is a font-spec, font-entity, or font-object. */) |
| 4701 | (Lisp_Object spec, Lisp_Object font) |
| 4702 | { |
| 4703 | CHECK_FONT_SPEC (spec); |
| 4704 | CHECK_FONT (font); |
| 4705 | |
| 4706 | return (font_match_p (spec, font) ? Qt : Qnil); |
| 4707 | } |
| 4708 | |
| 4709 | DEFUN ("font-at", Ffont_at, Sfont_at, 1, 3, 0, |
| 4710 | doc: /* Return a font-object for displaying a character at POSITION. |
| 4711 | Optional second arg WINDOW, if non-nil, is a window displaying |
| 4712 | the current buffer. It defaults to the currently selected window. */) |
| 4713 | (Lisp_Object position, Lisp_Object window, Lisp_Object string) |
| 4714 | { |
| 4715 | struct window *w; |
| 4716 | EMACS_INT pos; |
| 4717 | |
| 4718 | if (NILP (string)) |
| 4719 | { |
| 4720 | CHECK_NUMBER_COERCE_MARKER (position); |
| 4721 | pos = XINT (position); |
| 4722 | if (pos < BEGV || pos >= ZV) |
| 4723 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 4724 | } |
| 4725 | else |
| 4726 | { |
| 4727 | CHECK_NUMBER (position); |
| 4728 | CHECK_STRING (string); |
| 4729 | pos = XINT (position); |
| 4730 | if (pos < 0 || pos >= SCHARS (string)) |
| 4731 | args_out_of_range (string, position); |
| 4732 | } |
| 4733 | if (NILP (window)) |
| 4734 | window = selected_window; |
| 4735 | CHECK_LIVE_WINDOW (window); |
| 4736 | w = XWINDOW (window); |
| 4737 | |
| 4738 | return font_at (-1, pos, NULL, w, string); |
| 4739 | } |
| 4740 | |
| 4741 | #if 0 |
| 4742 | DEFUN ("draw-string", Fdraw_string, Sdraw_string, 2, 2, 0, |
| 4743 | doc: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame. |
| 4744 | The value is a number of glyphs drawn. |
| 4745 | Type C-l to recover what previously shown. */) |
| 4746 | (Lisp_Object font_object, Lisp_Object string) |
| 4747 | { |
| 4748 | Lisp_Object frame = selected_frame; |
| 4749 | FRAME_PTR f = XFRAME (frame); |
| 4750 | struct font *font; |
| 4751 | struct face *face; |
| 4752 | int i, len, width; |
| 4753 | unsigned *code; |
| 4754 | |
| 4755 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4756 | CHECK_STRING (string); |
| 4757 | len = SCHARS (string); |
| 4758 | code = alloca (sizeof (unsigned) * len); |
| 4759 | for (i = 0; i < len; i++) |
| 4760 | { |
| 4761 | Lisp_Object ch = Faref (string, make_number (i)); |
| 4762 | Lisp_Object val; |
| 4763 | int c = XINT (ch); |
| 4764 | |
| 4765 | code[i] = font->driver->encode_char (font, c); |
| 4766 | if (code[i] == FONT_INVALID_CODE) |
| 4767 | break; |
| 4768 | } |
| 4769 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4770 | face->fontp = font; |
| 4771 | if (font->driver->prepare_face) |
| 4772 | font->driver->prepare_face (f, face); |
| 4773 | width = font->driver->text_extents (font, code, i, NULL); |
| 4774 | len = font->driver->draw_text (f, face, 0, font->ascent, code, i, width); |
| 4775 | if (font->driver->done_face) |
| 4776 | font->driver->done_face (f, face); |
| 4777 | face->fontp = NULL; |
| 4778 | return make_number (len); |
| 4779 | } |
| 4780 | #endif |
| 4781 | |
| 4782 | #endif /* FONT_DEBUG */ |
| 4783 | |
| 4784 | #ifdef HAVE_WINDOW_SYSTEM |
| 4785 | |
| 4786 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, |
| 4787 | doc: /* Return information about a font named NAME on frame FRAME. |
| 4788 | If FRAME is omitted or nil, use the selected frame. |
| 4789 | The returned value is a vector of OPENED-NAME, FULL-NAME, SIZE, |
| 4790 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT, |
| 4791 | where |
| 4792 | OPENED-NAME is the name used for opening the font, |
| 4793 | FULL-NAME is the full name of the font, |
| 4794 | SIZE is the pixelsize of the font, |
| 4795 | HEIGHT is the pixel-height of the font (i.e ascent + descent), |
| 4796 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline, |
| 4797 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling |
| 4798 | how to compose characters. |
| 4799 | If the named font is not yet loaded, return nil. */) |
| 4800 | (Lisp_Object name, Lisp_Object frame) |
| 4801 | { |
| 4802 | FRAME_PTR f; |
| 4803 | struct font *font; |
| 4804 | Lisp_Object info; |
| 4805 | Lisp_Object font_object; |
| 4806 | |
| 4807 | (*check_window_system_func) (); |
| 4808 | |
| 4809 | if (! FONTP (name)) |
| 4810 | CHECK_STRING (name); |
| 4811 | if (NILP (frame)) |
| 4812 | frame = selected_frame; |
| 4813 | CHECK_LIVE_FRAME (frame); |
| 4814 | f = XFRAME (frame); |
| 4815 | |
| 4816 | if (STRINGP (name)) |
| 4817 | { |
| 4818 | int fontset = fs_query_fontset (name, 0); |
| 4819 | |
| 4820 | if (fontset >= 0) |
| 4821 | name = fontset_ascii (fontset); |
| 4822 | font_object = font_open_by_name (f, SSDATA (name)); |
| 4823 | } |
| 4824 | else if (FONT_OBJECT_P (name)) |
| 4825 | font_object = name; |
| 4826 | else if (FONT_ENTITY_P (name)) |
| 4827 | font_object = font_open_entity (f, name, 0); |
| 4828 | else |
| 4829 | { |
| 4830 | struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4831 | Lisp_Object entity = font_matching_entity (f, face->lface, name); |
| 4832 | |
| 4833 | font_object = ! NILP (entity) ? font_open_entity (f, entity, 0) : Qnil; |
| 4834 | } |
| 4835 | if (NILP (font_object)) |
| 4836 | return Qnil; |
| 4837 | font = XFONT_OBJECT (font_object); |
| 4838 | |
| 4839 | info = Fmake_vector (make_number (7), Qnil); |
| 4840 | XVECTOR (info)->contents[0] = AREF (font_object, FONT_NAME_INDEX); |
| 4841 | XVECTOR (info)->contents[1] = AREF (font_object, FONT_FULLNAME_INDEX); |
| 4842 | XVECTOR (info)->contents[2] = make_number (font->pixel_size); |
| 4843 | XVECTOR (info)->contents[3] = make_number (font->height); |
| 4844 | XVECTOR (info)->contents[4] = make_number (font->baseline_offset); |
| 4845 | XVECTOR (info)->contents[5] = make_number (font->relative_compose); |
| 4846 | XVECTOR (info)->contents[6] = make_number (font->default_ascent); |
| 4847 | |
| 4848 | #if 0 |
| 4849 | /* As font_object is still in FONT_OBJLIST of the entity, we can't |
| 4850 | close it now. Perhaps, we should manage font-objects |
| 4851 | by `reference-count'. */ |
| 4852 | font_close_object (f, font_object); |
| 4853 | #endif |
| 4854 | return info; |
| 4855 | } |
| 4856 | #endif |
| 4857 | |
| 4858 | \f |
| 4859 | #define BUILD_STYLE_TABLE(TBL) \ |
| 4860 | build_style_table ((TBL), sizeof TBL / sizeof (struct table_entry)) |
| 4861 | |
| 4862 | static Lisp_Object |
| 4863 | build_style_table (const struct table_entry *entry, int nelement) |
| 4864 | { |
| 4865 | int i, j; |
| 4866 | Lisp_Object table, elt; |
| 4867 | |
| 4868 | table = Fmake_vector (make_number (nelement), Qnil); |
| 4869 | for (i = 0; i < nelement; i++) |
| 4870 | { |
| 4871 | for (j = 0; entry[i].names[j]; j++); |
| 4872 | elt = Fmake_vector (make_number (j + 1), Qnil); |
| 4873 | ASET (elt, 0, make_number (entry[i].numeric)); |
| 4874 | for (j = 0; entry[i].names[j]; j++) |
| 4875 | ASET (elt, j + 1, intern_c_string (entry[i].names[j])); |
| 4876 | ASET (table, i, elt); |
| 4877 | } |
| 4878 | return table; |
| 4879 | } |
| 4880 | |
| 4881 | /* The deferred font-log data of the form [ACTION ARG RESULT]. |
| 4882 | If ACTION is not nil, that is added to the log when font_add_log is |
| 4883 | called next time. At that time, ACTION is set back to nil. */ |
| 4884 | static Lisp_Object Vfont_log_deferred; |
| 4885 | |
| 4886 | /* Prepend the font-related logging data in Vfont_log if it is not |
| 4887 | `t'. ACTION describes a kind of font-related action (e.g. listing, |
| 4888 | opening), ARG is the argument for the action, and RESULT is the |
| 4889 | result of the action. */ |
| 4890 | void |
| 4891 | font_add_log (const char *action, Lisp_Object arg, Lisp_Object result) |
| 4892 | { |
| 4893 | Lisp_Object val; |
| 4894 | int i; |
| 4895 | |
| 4896 | if (EQ (Vfont_log, Qt)) |
| 4897 | return; |
| 4898 | if (STRINGP (AREF (Vfont_log_deferred, 0))) |
| 4899 | { |
| 4900 | char *str = SSDATA (AREF (Vfont_log_deferred, 0)); |
| 4901 | |
| 4902 | ASET (Vfont_log_deferred, 0, Qnil); |
| 4903 | font_add_log (str, AREF (Vfont_log_deferred, 1), |
| 4904 | AREF (Vfont_log_deferred, 2)); |
| 4905 | } |
| 4906 | |
| 4907 | if (FONTP (arg)) |
| 4908 | { |
| 4909 | Lisp_Object tail, elt; |
| 4910 | Lisp_Object equalstr = build_string ("="); |
| 4911 | |
| 4912 | val = Ffont_xlfd_name (arg, Qt); |
| 4913 | for (tail = AREF (arg, FONT_EXTRA_INDEX); CONSP (tail); |
| 4914 | tail = XCDR (tail)) |
| 4915 | { |
| 4916 | elt = XCAR (tail); |
| 4917 | if (EQ (XCAR (elt), QCscript) |
| 4918 | && SYMBOLP (XCDR (elt))) |
| 4919 | val = concat3 (val, SYMBOL_NAME (QCscript), |
| 4920 | concat2 (equalstr, SYMBOL_NAME (XCDR (elt)))); |
| 4921 | else if (EQ (XCAR (elt), QClang) |
| 4922 | && SYMBOLP (XCDR (elt))) |
| 4923 | val = concat3 (val, SYMBOL_NAME (QClang), |
| 4924 | concat2 (equalstr, SYMBOL_NAME (XCDR (elt)))); |
| 4925 | else if (EQ (XCAR (elt), QCotf) |
| 4926 | && CONSP (XCDR (elt)) && SYMBOLP (XCAR (XCDR (elt)))) |
| 4927 | val = concat3 (val, SYMBOL_NAME (QCotf), |
| 4928 | concat2 (equalstr, |
| 4929 | SYMBOL_NAME (XCAR (XCDR (elt))))); |
| 4930 | } |
| 4931 | arg = val; |
| 4932 | } |
| 4933 | |
| 4934 | if (CONSP (result) |
| 4935 | && VECTORP (XCAR (result)) |
| 4936 | && ASIZE (XCAR (result)) > 0 |
| 4937 | && FONTP (AREF (XCAR (result), 0))) |
| 4938 | result = font_vconcat_entity_vectors (result); |
| 4939 | if (FONTP (result)) |
| 4940 | { |
| 4941 | val = Ffont_xlfd_name (result, Qt); |
| 4942 | if (! FONT_SPEC_P (result)) |
| 4943 | val = concat3 (SYMBOL_NAME (AREF (result, FONT_TYPE_INDEX)), |
| 4944 | build_string (":"), val); |
| 4945 | result = val; |
| 4946 | } |
| 4947 | else if (CONSP (result)) |
| 4948 | { |
| 4949 | Lisp_Object tail; |
| 4950 | result = Fcopy_sequence (result); |
| 4951 | for (tail = result; CONSP (tail); tail = XCDR (tail)) |
| 4952 | { |
| 4953 | val = XCAR (tail); |
| 4954 | if (FONTP (val)) |
| 4955 | val = Ffont_xlfd_name (val, Qt); |
| 4956 | XSETCAR (tail, val); |
| 4957 | } |
| 4958 | } |
| 4959 | else if (VECTORP (result)) |
| 4960 | { |
| 4961 | result = Fcopy_sequence (result); |
| 4962 | for (i = 0; i < ASIZE (result); i++) |
| 4963 | { |
| 4964 | val = AREF (result, i); |
| 4965 | if (FONTP (val)) |
| 4966 | val = Ffont_xlfd_name (val, Qt); |
| 4967 | ASET (result, i, val); |
| 4968 | } |
| 4969 | } |
| 4970 | Vfont_log = Fcons (list3 (intern (action), arg, result), Vfont_log); |
| 4971 | } |
| 4972 | |
| 4973 | /* Record a font-related logging data to be added to Vfont_log when |
| 4974 | font_add_log is called next time. ACTION, ARG, RESULT are the same |
| 4975 | as font_add_log. */ |
| 4976 | |
| 4977 | void |
| 4978 | font_deferred_log (const char *action, Lisp_Object arg, Lisp_Object result) |
| 4979 | { |
| 4980 | if (EQ (Vfont_log, Qt)) |
| 4981 | return; |
| 4982 | ASET (Vfont_log_deferred, 0, build_string (action)); |
| 4983 | ASET (Vfont_log_deferred, 1, arg); |
| 4984 | ASET (Vfont_log_deferred, 2, result); |
| 4985 | } |
| 4986 | |
| 4987 | void |
| 4988 | syms_of_font (void) |
| 4989 | { |
| 4990 | sort_shift_bits[FONT_TYPE_INDEX] = 0; |
| 4991 | sort_shift_bits[FONT_SLANT_INDEX] = 2; |
| 4992 | sort_shift_bits[FONT_WEIGHT_INDEX] = 9; |
| 4993 | sort_shift_bits[FONT_SIZE_INDEX] = 16; |
| 4994 | sort_shift_bits[FONT_WIDTH_INDEX] = 23; |
| 4995 | /* Note that the other elements in sort_shift_bits are not used. */ |
| 4996 | |
| 4997 | staticpro (&font_charset_alist); |
| 4998 | font_charset_alist = Qnil; |
| 4999 | |
| 5000 | DEFSYM (Qopentype, "opentype"); |
| 5001 | |
| 5002 | DEFSYM (Qascii_0, "ascii-0"); |
| 5003 | DEFSYM (Qiso8859_1, "iso8859-1"); |
| 5004 | DEFSYM (Qiso10646_1, "iso10646-1"); |
| 5005 | DEFSYM (Qunicode_bmp, "unicode-bmp"); |
| 5006 | DEFSYM (Qunicode_sip, "unicode-sip"); |
| 5007 | |
| 5008 | DEFSYM (QCf, "Cf"); |
| 5009 | |
| 5010 | DEFSYM (QCotf, ":otf"); |
| 5011 | DEFSYM (QClang, ":lang"); |
| 5012 | DEFSYM (QCscript, ":script"); |
| 5013 | DEFSYM (QCantialias, ":antialias"); |
| 5014 | |
| 5015 | DEFSYM (QCfoundry, ":foundry"); |
| 5016 | DEFSYM (QCadstyle, ":adstyle"); |
| 5017 | DEFSYM (QCregistry, ":registry"); |
| 5018 | DEFSYM (QCspacing, ":spacing"); |
| 5019 | DEFSYM (QCdpi, ":dpi"); |
| 5020 | DEFSYM (QCscalable, ":scalable"); |
| 5021 | DEFSYM (QCavgwidth, ":avgwidth"); |
| 5022 | DEFSYM (QCfont_entity, ":font-entity"); |
| 5023 | DEFSYM (QCfc_unknown_spec, ":fc-unknown-spec"); |
| 5024 | |
| 5025 | DEFSYM (Qc, "c"); |
| 5026 | DEFSYM (Qm, "m"); |
| 5027 | DEFSYM (Qp, "p"); |
| 5028 | DEFSYM (Qd, "d"); |
| 5029 | |
| 5030 | DEFSYM (Qja, "ja"); |
| 5031 | DEFSYM (Qko, "ko"); |
| 5032 | |
| 5033 | DEFSYM (QCuser_spec, "user-spec"); |
| 5034 | |
| 5035 | staticpro (&null_vector); |
| 5036 | null_vector = Fmake_vector (make_number (0), Qnil); |
| 5037 | |
| 5038 | staticpro (&scratch_font_spec); |
| 5039 | scratch_font_spec = Ffont_spec (0, NULL); |
| 5040 | staticpro (&scratch_font_prefer); |
| 5041 | scratch_font_prefer = Ffont_spec (0, NULL); |
| 5042 | |
| 5043 | staticpro (&Vfont_log_deferred); |
| 5044 | Vfont_log_deferred = Fmake_vector (make_number (3), Qnil); |
| 5045 | |
| 5046 | #if 0 |
| 5047 | #ifdef HAVE_LIBOTF |
| 5048 | staticpro (&otf_list); |
| 5049 | otf_list = Qnil; |
| 5050 | #endif /* HAVE_LIBOTF */ |
| 5051 | #endif /* 0 */ |
| 5052 | |
| 5053 | defsubr (&Sfontp); |
| 5054 | defsubr (&Sfont_spec); |
| 5055 | defsubr (&Sfont_get); |
| 5056 | #ifdef HAVE_WINDOW_SYSTEM |
| 5057 | defsubr (&Sfont_face_attributes); |
| 5058 | #endif |
| 5059 | defsubr (&Sfont_put); |
| 5060 | defsubr (&Slist_fonts); |
| 5061 | defsubr (&Sfont_family_list); |
| 5062 | defsubr (&Sfind_font); |
| 5063 | defsubr (&Sfont_xlfd_name); |
| 5064 | defsubr (&Sclear_font_cache); |
| 5065 | defsubr (&Sfont_shape_gstring); |
| 5066 | defsubr (&Sfont_variation_glyphs); |
| 5067 | #if 0 |
| 5068 | defsubr (&Sfont_drive_otf); |
| 5069 | defsubr (&Sfont_otf_alternates); |
| 5070 | #endif /* 0 */ |
| 5071 | |
| 5072 | #ifdef FONT_DEBUG |
| 5073 | defsubr (&Sopen_font); |
| 5074 | defsubr (&Sclose_font); |
| 5075 | defsubr (&Squery_font); |
| 5076 | defsubr (&Sfont_get_glyphs); |
| 5077 | defsubr (&Sfont_match_p); |
| 5078 | defsubr (&Sfont_at); |
| 5079 | #if 0 |
| 5080 | defsubr (&Sdraw_string); |
| 5081 | #endif |
| 5082 | #endif /* FONT_DEBUG */ |
| 5083 | #ifdef HAVE_WINDOW_SYSTEM |
| 5084 | defsubr (&Sfont_info); |
| 5085 | #endif |
| 5086 | |
| 5087 | DEFVAR_LISP ("font-encoding-alist", Vfont_encoding_alist, |
| 5088 | doc: /* |
| 5089 | Alist of fontname patterns vs the corresponding encoding and repertory info. |
| 5090 | Each element looks like (REGEXP . (ENCODING . REPERTORY)), |
| 5091 | where ENCODING is a charset or a char-table, |
| 5092 | and REPERTORY is a charset, a char-table, or nil. |
| 5093 | |
| 5094 | If ENCODING and REPERTORY are the same, the element can have the form |
| 5095 | \(REGEXP . ENCODING). |
| 5096 | |
| 5097 | ENCODING is for converting a character to a glyph code of the font. |
| 5098 | If ENCODING is a charset, encoding a character by the charset gives |
| 5099 | the corresponding glyph code. If ENCODING is a char-table, looking up |
| 5100 | the table by a character gives the corresponding glyph code. |
| 5101 | |
| 5102 | REPERTORY specifies a repertory of characters supported by the font. |
| 5103 | If REPERTORY is a charset, all characters beloging to the charset are |
| 5104 | supported. If REPERTORY is a char-table, all characters who have a |
| 5105 | non-nil value in the table are supported. If REPERTORY is nil, Emacs |
| 5106 | gets the repertory information by an opened font and ENCODING. */); |
| 5107 | Vfont_encoding_alist = Qnil; |
| 5108 | |
| 5109 | /* FIXME: These 3 vars are not quite what they appear: setq on them |
| 5110 | won't have any effect other than disconnect them from the style |
| 5111 | table used by the font display code. So we make them read-only, |
| 5112 | to avoid this confusing situation. */ |
| 5113 | |
| 5114 | DEFVAR_LISP_NOPRO ("font-weight-table", Vfont_weight_table, |
| 5115 | doc: /* Vector of valid font weight values. |
| 5116 | Each element has the form: |
| 5117 | [NUMERIC-VALUE SYMBOLIC-NAME ALIAS-NAME ...] |
| 5118 | NUMERIC-VALUE is an integer, and SYMBOLIC-NAME and ALIAS-NAME are symbols. */); |
| 5119 | Vfont_weight_table = BUILD_STYLE_TABLE (weight_table); |
| 5120 | XSYMBOL (intern_c_string ("font-weight-table"))->constant = 1; |
| 5121 | |
| 5122 | DEFVAR_LISP_NOPRO ("font-slant-table", Vfont_slant_table, |
| 5123 | doc: /* Vector of font slant symbols vs the corresponding numeric values. |
| 5124 | See `font-weight-table' for the format of the vector. */); |
| 5125 | Vfont_slant_table = BUILD_STYLE_TABLE (slant_table); |
| 5126 | XSYMBOL (intern_c_string ("font-slant-table"))->constant = 1; |
| 5127 | |
| 5128 | DEFVAR_LISP_NOPRO ("font-width-table", Vfont_width_table, |
| 5129 | doc: /* Alist of font width symbols vs the corresponding numeric values. |
| 5130 | See `font-weight-table' for the format of the vector. */); |
| 5131 | Vfont_width_table = BUILD_STYLE_TABLE (width_table); |
| 5132 | XSYMBOL (intern_c_string ("font-width-table"))->constant = 1; |
| 5133 | |
| 5134 | staticpro (&font_style_table); |
| 5135 | font_style_table = Fmake_vector (make_number (3), Qnil); |
| 5136 | ASET (font_style_table, 0, Vfont_weight_table); |
| 5137 | ASET (font_style_table, 1, Vfont_slant_table); |
| 5138 | ASET (font_style_table, 2, Vfont_width_table); |
| 5139 | |
| 5140 | DEFVAR_LISP ("font-log", Vfont_log, doc: /* |
| 5141 | *Logging list of font related actions and results. |
| 5142 | The value t means to suppress the logging. |
| 5143 | The initial value is set to nil if the environment variable |
| 5144 | EMACS_FONT_LOG is set. Otherwise, it is set to t. */); |
| 5145 | Vfont_log = Qnil; |
| 5146 | |
| 5147 | #ifdef HAVE_WINDOW_SYSTEM |
| 5148 | #ifdef HAVE_FREETYPE |
| 5149 | syms_of_ftfont (); |
| 5150 | #ifdef HAVE_X_WINDOWS |
| 5151 | syms_of_xfont (); |
| 5152 | syms_of_ftxfont (); |
| 5153 | #ifdef HAVE_XFT |
| 5154 | syms_of_xftfont (); |
| 5155 | #endif /* HAVE_XFT */ |
| 5156 | #endif /* HAVE_X_WINDOWS */ |
| 5157 | #else /* not HAVE_FREETYPE */ |
| 5158 | #ifdef HAVE_X_WINDOWS |
| 5159 | syms_of_xfont (); |
| 5160 | #endif /* HAVE_X_WINDOWS */ |
| 5161 | #endif /* not HAVE_FREETYPE */ |
| 5162 | #ifdef HAVE_BDFFONT |
| 5163 | syms_of_bdffont (); |
| 5164 | #endif /* HAVE_BDFFONT */ |
| 5165 | #ifdef WINDOWSNT |
| 5166 | syms_of_w32font (); |
| 5167 | #endif /* WINDOWSNT */ |
| 5168 | #ifdef HAVE_NS |
| 5169 | syms_of_nsfont (); |
| 5170 | #endif /* HAVE_NS */ |
| 5171 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 5172 | } |
| 5173 | |
| 5174 | void |
| 5175 | init_font (void) |
| 5176 | { |
| 5177 | Vfont_log = egetenv ("EMACS_FONT_LOG") ? Qnil : Qt; |
| 5178 | } |