| 1 | /* font.c -- "Font" primitives. |
| 2 | Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. |
| 3 | Copyright (C) 2006, 2007, 2008 |
| 4 | National Institute of Advanced Industrial Science and Technology (AIST) |
| 5 | Registration Number H13PRO009 |
| 6 | |
| 7 | This file is part of GNU Emacs. |
| 8 | |
| 9 | GNU Emacs is free software: you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation, either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | GNU Emacs is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include <config.h> |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <ctype.h> |
| 26 | #ifdef HAVE_M17N_FLT |
| 27 | #include <m17n-flt.h> |
| 28 | #endif |
| 29 | |
| 30 | #include "lisp.h" |
| 31 | #include "buffer.h" |
| 32 | #include "frame.h" |
| 33 | #include "window.h" |
| 34 | #include "dispextern.h" |
| 35 | #include "charset.h" |
| 36 | #include "character.h" |
| 37 | #include "composite.h" |
| 38 | #include "fontset.h" |
| 39 | #include "font.h" |
| 40 | |
| 41 | #ifdef HAVE_X_WINDOWS |
| 42 | #include "xterm.h" |
| 43 | #endif /* HAVE_X_WINDOWS */ |
| 44 | |
| 45 | #ifdef HAVE_NTGUI |
| 46 | #include "w32term.h" |
| 47 | #endif /* HAVE_NTGUI */ |
| 48 | |
| 49 | #ifdef MAC_OS |
| 50 | #include "macterm.h" |
| 51 | #endif /* MAC_OS */ |
| 52 | |
| 53 | Lisp_Object Qfont_spec, Qfont_entity, Qfont_object; |
| 54 | |
| 55 | Lisp_Object Qopentype; |
| 56 | |
| 57 | /* Important character set strings. */ |
| 58 | Lisp_Object Qascii_0, Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip; |
| 59 | |
| 60 | /* Special vector of zero length. This is repeatedly used by (struct |
| 61 | font_driver *)->list when a specified font is not found. */ |
| 62 | static Lisp_Object null_vector; |
| 63 | |
| 64 | static Lisp_Object Vfont_weight_table, Vfont_slant_table, Vfont_width_table; |
| 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 | char *names[5]; |
| 78 | Lisp_Object *symbols; |
| 79 | }; |
| 80 | |
| 81 | /* Table of weight numeric values and their names. This table must be |
| 82 | sorted by numeric values in ascending order. */ |
| 83 | |
| 84 | static struct table_entry weight_table[] = |
| 85 | { |
| 86 | { 0, { "thin" }}, |
| 87 | { 20, { "ultra-light", "ultralight" }}, |
| 88 | { 40, { "extra-light", "extralight" }}, |
| 89 | { 50, { "light" }}, |
| 90 | { 75, { "semi-light", "semilight", "demilight", "book" }}, |
| 91 | { 100, { "normal", "medium", "regular" }}, |
| 92 | { 180, { "semi-bold", "semibold", "demibold", "demi" }}, |
| 93 | { 200, { "bold" }}, |
| 94 | { 205, { "extra-bold", "extrabold" }}, |
| 95 | { 210, { "ultra-bold", "ultrabold", "black" }} |
| 96 | }; |
| 97 | |
| 98 | /* Table of slant numeric values and their names. This table must be |
| 99 | sorted by numeric values in ascending order. */ |
| 100 | |
| 101 | static struct table_entry slant_table[] = |
| 102 | { |
| 103 | { 0, { "reverse-oblique", "ro" }}, |
| 104 | { 10, { "reverse-italic", "ri" }}, |
| 105 | { 100, { "normal", "r" }}, |
| 106 | { 200, { "italic" ,"i", "ot" }}, |
| 107 | { 210, { "oblique", "o" }} |
| 108 | }; |
| 109 | |
| 110 | /* Table of width numeric values and their names. This table must be |
| 111 | sorted by numeric values in ascending order. */ |
| 112 | |
| 113 | static struct table_entry width_table[] = |
| 114 | { |
| 115 | { 50, { "ultra-condensed", "ultracondensed" }}, |
| 116 | { 63, { "extra-condensed", "extracondensed" }}, |
| 117 | { 75, { "condensed", "compressed", "narrow" }}, |
| 118 | { 87, { "semi-condensed", "semicondensed", "demicondensed" }}, |
| 119 | { 100, { "normal", "medium", "regular" }}, |
| 120 | { 113, { "semi-expanded", "semiexpanded", "demiexpanded" }}, |
| 121 | { 125, { "expanded" }}, |
| 122 | { 150, { "extra-expanded", "extraexpanded" }}, |
| 123 | { 200, { "ultra-expanded", "ultraexpanded", "wide" }} |
| 124 | }; |
| 125 | |
| 126 | extern Lisp_Object Qnormal; |
| 127 | |
| 128 | /* Symbols representing keys of normal font properties. */ |
| 129 | extern Lisp_Object QCtype, QCfamily, QCweight, QCslant, QCwidth, QCsize, QCname; |
| 130 | Lisp_Object QCfoundry, QCadstyle, QCregistry; |
| 131 | /* Symbols representing keys of font extra info. */ |
| 132 | Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript, QCavgwidth; |
| 133 | Lisp_Object QCantialias, QCfont_entity, QCfc_unknown_spec; |
| 134 | /* Symbols representing values of font spacing property. */ |
| 135 | Lisp_Object Qc, Qm, Qp, Qd; |
| 136 | |
| 137 | Lisp_Object Vfont_encoding_alist; |
| 138 | |
| 139 | /* Alist of font registry symbol and the corresponding charsets |
| 140 | information. The information is retrieved from |
| 141 | Vfont_encoding_alist on demand. |
| 142 | |
| 143 | Eash element has the form: |
| 144 | (REGISTRY . (ENCODING-CHARSET-ID . REPERTORY-CHARSET-ID)) |
| 145 | or |
| 146 | (REGISTRY . nil) |
| 147 | |
| 148 | In the former form, ENCODING-CHARSET-ID is an ID of a charset that |
| 149 | encodes a character code to a glyph code of a font, and |
| 150 | REPERTORY-CHARSET-ID is an ID of a charset that tells if a |
| 151 | character is supported by a font. |
| 152 | |
| 153 | The latter form means that the information for REGISTRY couldn't be |
| 154 | retrieved. */ |
| 155 | static Lisp_Object font_charset_alist; |
| 156 | |
| 157 | /* List of all font drivers. Each font-backend (XXXfont.c) calls |
| 158 | register_font_driver in syms_of_XXXfont to register its font-driver |
| 159 | here. */ |
| 160 | static struct font_driver_list *font_driver_list; |
| 161 | |
| 162 | \f |
| 163 | |
| 164 | /* Creaters of font-related Lisp object. */ |
| 165 | |
| 166 | Lisp_Object |
| 167 | font_make_spec () |
| 168 | { |
| 169 | Lisp_Object font_spec; |
| 170 | struct font_spec *spec |
| 171 | = ((struct font_spec *) |
| 172 | allocate_pseudovector (VECSIZE (struct font_spec), |
| 173 | FONT_SPEC_MAX, PVEC_FONT)); |
| 174 | XSETFONT (font_spec, spec); |
| 175 | return font_spec; |
| 176 | } |
| 177 | |
| 178 | Lisp_Object |
| 179 | font_make_entity () |
| 180 | { |
| 181 | Lisp_Object font_entity; |
| 182 | struct font_entity *entity |
| 183 | = ((struct font_entity *) |
| 184 | allocate_pseudovector (VECSIZE (struct font_entity), |
| 185 | FONT_ENTITY_MAX, PVEC_FONT)); |
| 186 | XSETFONT (font_entity, entity); |
| 187 | return font_entity; |
| 188 | } |
| 189 | |
| 190 | Lisp_Object |
| 191 | font_make_object (size) |
| 192 | int size; |
| 193 | { |
| 194 | Lisp_Object font_object; |
| 195 | struct font *font |
| 196 | = (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT); |
| 197 | XSETFONT (font_object, font); |
| 198 | |
| 199 | return font_object; |
| 200 | } |
| 201 | |
| 202 | \f |
| 203 | |
| 204 | static int font_pixel_size P_ ((FRAME_PTR f, Lisp_Object)); |
| 205 | static Lisp_Object font_open_entity P_ ((FRAME_PTR, Lisp_Object, int)); |
| 206 | static Lisp_Object font_matching_entity P_ ((FRAME_PTR, Lisp_Object *, |
| 207 | Lisp_Object)); |
| 208 | |
| 209 | /* Number of registered font drivers. */ |
| 210 | static int num_font_drivers; |
| 211 | |
| 212 | |
| 213 | /* Return a Lispy value of a font property value at STR and LEN bytes. |
| 214 | If STR is "*", it returns nil. |
| 215 | If FORCE_SYMBOL is zero and all characters in STR are digits, it |
| 216 | returns an integer. Otherwise, it returns a symbol interned from |
| 217 | STR. */ |
| 218 | |
| 219 | Lisp_Object |
| 220 | font_intern_prop (str, len, force_symbol) |
| 221 | char *str; |
| 222 | int len; |
| 223 | int force_symbol; |
| 224 | { |
| 225 | int i; |
| 226 | Lisp_Object tem; |
| 227 | Lisp_Object obarray; |
| 228 | |
| 229 | if (len == 1 && *str == '*') |
| 230 | return Qnil; |
| 231 | if (!force_symbol && len >=1 && isdigit (*str)) |
| 232 | { |
| 233 | for (i = 1; i < len; i++) |
| 234 | if (! isdigit (str[i])) |
| 235 | break; |
| 236 | if (i == len) |
| 237 | return make_number (atoi (str)); |
| 238 | } |
| 239 | |
| 240 | /* The following code is copied from the function intern (in lread.c). */ |
| 241 | obarray = Vobarray; |
| 242 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
| 243 | obarray = check_obarray (obarray); |
| 244 | tem = oblookup (obarray, str, len, len); |
| 245 | if (SYMBOLP (tem)) |
| 246 | return tem; |
| 247 | return Fintern (make_unibyte_string (str, len), obarray); |
| 248 | } |
| 249 | |
| 250 | /* Return a pixel size of font-spec SPEC on frame F. */ |
| 251 | |
| 252 | static int |
| 253 | font_pixel_size (f, spec) |
| 254 | FRAME_PTR f; |
| 255 | Lisp_Object spec; |
| 256 | { |
| 257 | #ifdef HAVE_WINDOW_SYSTEM |
| 258 | Lisp_Object size = AREF (spec, FONT_SIZE_INDEX); |
| 259 | double point_size; |
| 260 | int dpi, pixel_size; |
| 261 | Lisp_Object val; |
| 262 | |
| 263 | if (INTEGERP (size)) |
| 264 | return XINT (size); |
| 265 | if (NILP (size)) |
| 266 | return 0; |
| 267 | font_assert (FLOATP (size)); |
| 268 | point_size = XFLOAT_DATA (size); |
| 269 | val = AREF (spec, FONT_DPI_INDEX); |
| 270 | if (INTEGERP (val)) |
| 271 | dpi = XINT (val); |
| 272 | else |
| 273 | dpi = f->resy; |
| 274 | pixel_size = POINT_TO_PIXEL (point_size, dpi); |
| 275 | return pixel_size; |
| 276 | #else |
| 277 | return 1; |
| 278 | #endif |
| 279 | } |
| 280 | |
| 281 | |
| 282 | /* Return a value of PROP's VAL (symbol or integer) to be stored in a |
| 283 | font vector. If VAL is not valid (i.e. not registered in |
| 284 | font_style_table), return -1 if NOERROR is zero, and return a |
| 285 | proper index if NOERROR is nonzero. In that case, register VAL in |
| 286 | font_style_table if VAL is a symbol, and return a closest index if |
| 287 | VAL is an integer. */ |
| 288 | |
| 289 | int |
| 290 | font_style_to_value (prop, val, noerror) |
| 291 | enum font_property_index prop; |
| 292 | Lisp_Object val; |
| 293 | int noerror; |
| 294 | { |
| 295 | Lisp_Object table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 296 | int len = ASIZE (table); |
| 297 | int i, j; |
| 298 | |
| 299 | if (SYMBOLP (val)) |
| 300 | { |
| 301 | unsigned char *s; |
| 302 | Lisp_Object args[2], elt; |
| 303 | |
| 304 | /* At first try exact match. */ |
| 305 | for (i = 0; i < len; i++) |
| 306 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 307 | if (EQ (val, AREF (AREF (table, i), j))) |
| 308 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 309 | | (i << 4) | (j - 1)); |
| 310 | /* Try also with case-folding match. */ |
| 311 | s = SDATA (SYMBOL_NAME (val)); |
| 312 | for (i = 0; i < len; i++) |
| 313 | for (j = 1; j < ASIZE (AREF (table, i)); j++) |
| 314 | { |
| 315 | elt = AREF (AREF (table, i), j); |
| 316 | if (xstrcasecmp (s, SDATA (SYMBOL_NAME (elt))) == 0) |
| 317 | return ((XINT (AREF (AREF (table, i), 0)) << 8) |
| 318 | | (i << 4) | (j - 1)); |
| 319 | } |
| 320 | if (! noerror) |
| 321 | return -1; |
| 322 | if (len == 255) |
| 323 | abort (); |
| 324 | elt = Fmake_vector (make_number (2), make_number (255)); |
| 325 | ASET (elt, 1, val); |
| 326 | args[0] = table; |
| 327 | args[1] = Fmake_vector (make_number (1), elt); |
| 328 | ASET (font_style_table, prop - FONT_WEIGHT_INDEX, Fvconcat (2, args)); |
| 329 | return (255 << 8) | (i << 4); |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | int i, last_n; |
| 334 | int numeric = XINT (val); |
| 335 | |
| 336 | for (i = 0, last_n = -1; i < len; i++) |
| 337 | { |
| 338 | int n = XINT (AREF (AREF (table, i), 0)); |
| 339 | |
| 340 | if (numeric == n) |
| 341 | return (n << 8) | (i << 4); |
| 342 | if (numeric < n) |
| 343 | { |
| 344 | if (! noerror) |
| 345 | return -1; |
| 346 | return ((i == 0 || n - numeric < numeric - last_n) |
| 347 | ? (n << 8) | (i << 4): (last_n << 8 | ((i - 1) << 4))); |
| 348 | } |
| 349 | last_n = n; |
| 350 | } |
| 351 | if (! noerror) |
| 352 | return -1; |
| 353 | return ((last_n << 8) | ((i - 1) << 4)); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | Lisp_Object |
| 358 | font_style_symbolic (font, prop, for_face) |
| 359 | Lisp_Object font; |
| 360 | enum font_property_index prop; |
| 361 | int for_face; |
| 362 | { |
| 363 | Lisp_Object val = AREF (font, prop); |
| 364 | Lisp_Object table, elt; |
| 365 | int i; |
| 366 | |
| 367 | if (NILP (val)) |
| 368 | return Qnil; |
| 369 | table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX); |
| 370 | i = XINT (val) & 0xFF; |
| 371 | font_assert (((i >> 4) & 0xF) < ASIZE (table)); |
| 372 | elt = AREF (table, ((i >> 4) & 0xF)); |
| 373 | font_assert ((i & 0xF) + 1 < ASIZE (elt)); |
| 374 | return (for_face ? AREF (elt, 1) : AREF (elt, (i & 0xF) + 1)); |
| 375 | } |
| 376 | |
| 377 | extern Lisp_Object Vface_alternative_font_family_alist; |
| 378 | |
| 379 | extern Lisp_Object find_font_encoding P_ ((Lisp_Object)); |
| 380 | |
| 381 | |
| 382 | /* Return ENCODING or a cons of ENCODING and REPERTORY of the font |
| 383 | FONTNAME. ENCODING is a charset symbol that specifies the encoding |
| 384 | of the font. REPERTORY is a charset symbol or nil. */ |
| 385 | |
| 386 | Lisp_Object |
| 387 | find_font_encoding (fontname) |
| 388 | Lisp_Object fontname; |
| 389 | { |
| 390 | Lisp_Object tail, elt; |
| 391 | |
| 392 | for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail)) |
| 393 | { |
| 394 | elt = XCAR (tail); |
| 395 | if (CONSP (elt) |
| 396 | && STRINGP (XCAR (elt)) |
| 397 | && fast_string_match_ignore_case (XCAR (elt), fontname) >= 0 |
| 398 | && (SYMBOLP (XCDR (elt)) |
| 399 | ? CHARSETP (XCDR (elt)) |
| 400 | : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt))))) |
| 401 | return (XCDR (elt)); |
| 402 | } |
| 403 | /* We don't know the encoding of this font. Let's assume `ascii'. */ |
| 404 | return Qascii; |
| 405 | } |
| 406 | |
| 407 | /* Return encoding charset and repertory charset for REGISTRY in |
| 408 | ENCODING and REPERTORY correspondingly. If correct information for |
| 409 | REGISTRY is available, return 0. Otherwise return -1. */ |
| 410 | |
| 411 | int |
| 412 | font_registry_charsets (registry, encoding, repertory) |
| 413 | Lisp_Object registry; |
| 414 | struct charset **encoding, **repertory; |
| 415 | { |
| 416 | Lisp_Object val; |
| 417 | int encoding_id, repertory_id; |
| 418 | |
| 419 | val = Fassoc_string (registry, font_charset_alist, Qt); |
| 420 | if (! NILP (val)) |
| 421 | { |
| 422 | val = XCDR (val); |
| 423 | if (NILP (val)) |
| 424 | return -1; |
| 425 | encoding_id = XINT (XCAR (val)); |
| 426 | repertory_id = XINT (XCDR (val)); |
| 427 | } |
| 428 | else |
| 429 | { |
| 430 | val = find_font_encoding (SYMBOL_NAME (registry)); |
| 431 | if (SYMBOLP (val) && CHARSETP (val)) |
| 432 | { |
| 433 | encoding_id = repertory_id = XINT (CHARSET_SYMBOL_ID (val)); |
| 434 | } |
| 435 | else if (CONSP (val)) |
| 436 | { |
| 437 | if (! CHARSETP (XCAR (val))) |
| 438 | goto invalid_entry; |
| 439 | encoding_id = XINT (CHARSET_SYMBOL_ID (XCAR (val))); |
| 440 | if (NILP (XCDR (val))) |
| 441 | repertory_id = -1; |
| 442 | else |
| 443 | { |
| 444 | if (! CHARSETP (XCDR (val))) |
| 445 | goto invalid_entry; |
| 446 | repertory_id = XINT (CHARSET_SYMBOL_ID (XCDR (val))); |
| 447 | } |
| 448 | } |
| 449 | else |
| 450 | goto invalid_entry; |
| 451 | val = Fcons (make_number (encoding_id), make_number (repertory_id)); |
| 452 | font_charset_alist |
| 453 | = nconc2 (font_charset_alist, Fcons (Fcons (registry, val), Qnil)); |
| 454 | } |
| 455 | |
| 456 | if (encoding) |
| 457 | *encoding = CHARSET_FROM_ID (encoding_id); |
| 458 | if (repertory) |
| 459 | *repertory = repertory_id >= 0 ? CHARSET_FROM_ID (repertory_id) : NULL; |
| 460 | return 0; |
| 461 | |
| 462 | invalid_entry: |
| 463 | font_charset_alist |
| 464 | = nconc2 (font_charset_alist, Fcons (Fcons (registry, Qnil), Qnil)); |
| 465 | return -1; |
| 466 | } |
| 467 | |
| 468 | \f |
| 469 | /* Font property value validaters. See the comment of |
| 470 | font_property_table for the meaning of the arguments. */ |
| 471 | |
| 472 | static Lisp_Object font_prop_validate P_ ((int, Lisp_Object, Lisp_Object)); |
| 473 | static Lisp_Object font_prop_validate_symbol P_ ((Lisp_Object, Lisp_Object)); |
| 474 | static Lisp_Object font_prop_validate_style P_ ((Lisp_Object, Lisp_Object)); |
| 475 | static Lisp_Object font_prop_validate_non_neg P_ ((Lisp_Object, Lisp_Object)); |
| 476 | static Lisp_Object font_prop_validate_spacing P_ ((Lisp_Object, Lisp_Object)); |
| 477 | static int get_font_prop_index P_ ((Lisp_Object)); |
| 478 | |
| 479 | static Lisp_Object |
| 480 | font_prop_validate_symbol (prop, val) |
| 481 | Lisp_Object prop, val; |
| 482 | { |
| 483 | if (STRINGP (val)) |
| 484 | val = Fintern (val, Qnil); |
| 485 | if (! SYMBOLP (val)) |
| 486 | val = Qerror; |
| 487 | else if (EQ (prop, QCregistry)) |
| 488 | val = Fintern (Fdowncase (SYMBOL_NAME (val)), Qnil); |
| 489 | return val; |
| 490 | } |
| 491 | |
| 492 | |
| 493 | static Lisp_Object |
| 494 | font_prop_validate_style (style, val) |
| 495 | Lisp_Object style, val; |
| 496 | { |
| 497 | enum font_property_index prop = (EQ (style, QCweight) ? FONT_WEIGHT_INDEX |
| 498 | : EQ (style, QCslant) ? FONT_SLANT_INDEX |
| 499 | : FONT_WIDTH_INDEX); |
| 500 | int n; |
| 501 | if (INTEGERP (val)) |
| 502 | { |
| 503 | n = XINT (val); |
| 504 | if (((n >> 4) & 0xF) |
| 505 | >= ASIZE (AREF (font_style_table, prop - FONT_WEIGHT_INDEX))) |
| 506 | val = Qerror; |
| 507 | else |
| 508 | { |
| 509 | Lisp_Object elt = AREF (AREF (font_style_table, prop - FONT_WEIGHT_INDEX), (n >> 4) & 0xF); |
| 510 | |
| 511 | if ((n & 0xF) + 1 >= ASIZE (elt)) |
| 512 | val = Qerror; |
| 513 | else if (XINT (AREF (elt, 0)) != (n >> 8)) |
| 514 | val = Qerror; |
| 515 | } |
| 516 | } |
| 517 | else if (SYMBOLP (val)) |
| 518 | { |
| 519 | int n = font_style_to_value (prop, val, 0); |
| 520 | |
| 521 | val = n >= 0 ? make_number (n) : Qerror; |
| 522 | } |
| 523 | else |
| 524 | val = Qerror; |
| 525 | return val; |
| 526 | } |
| 527 | |
| 528 | static Lisp_Object |
| 529 | font_prop_validate_non_neg (prop, val) |
| 530 | Lisp_Object prop, val; |
| 531 | { |
| 532 | return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0) |
| 533 | ? val : Qerror); |
| 534 | } |
| 535 | |
| 536 | static Lisp_Object |
| 537 | font_prop_validate_spacing (prop, val) |
| 538 | Lisp_Object prop, val; |
| 539 | { |
| 540 | if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL)) |
| 541 | return val; |
| 542 | if (SYMBOLP (val) && SBYTES (SYMBOL_NAME (val)) == 1) |
| 543 | { |
| 544 | char spacing = SDATA (SYMBOL_NAME (val))[0]; |
| 545 | |
| 546 | if (spacing == 'c' || spacing == 'C') |
| 547 | return make_number (FONT_SPACING_CHARCELL); |
| 548 | if (spacing == 'm' || spacing == 'M') |
| 549 | return make_number (FONT_SPACING_MONO); |
| 550 | if (spacing == 'p' || spacing == 'P') |
| 551 | return make_number (FONT_SPACING_PROPORTIONAL); |
| 552 | if (spacing == 'd' || spacing == 'D') |
| 553 | return make_number (FONT_SPACING_DUAL); |
| 554 | } |
| 555 | return Qerror; |
| 556 | } |
| 557 | |
| 558 | static Lisp_Object |
| 559 | font_prop_validate_otf (prop, val) |
| 560 | Lisp_Object prop, val; |
| 561 | { |
| 562 | Lisp_Object tail, tmp; |
| 563 | int i; |
| 564 | |
| 565 | /* VAL = (SCRIPT [ LANGSYS [ GSUB-FEATURES [ GPOS-FEATURES ]]]) |
| 566 | GSUB-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil |
| 567 | GPOS-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil */ |
| 568 | if (! CONSP (val)) |
| 569 | return Qerror; |
| 570 | if (! SYMBOLP (XCAR (val))) |
| 571 | return Qerror; |
| 572 | tail = XCDR (val); |
| 573 | if (NILP (tail)) |
| 574 | return val; |
| 575 | if (! CONSP (tail) || ! SYMBOLP (XCAR (val))) |
| 576 | return Qerror; |
| 577 | for (i = 0; i < 2; i++) |
| 578 | { |
| 579 | tail = XCDR (tail); |
| 580 | if (NILP (tail)) |
| 581 | return val; |
| 582 | if (! CONSP (tail)) |
| 583 | return Qerror; |
| 584 | for (tmp = XCAR (tail); CONSP (tmp); tmp = XCDR (tmp)) |
| 585 | if (! SYMBOLP (XCAR (tmp))) |
| 586 | return Qerror; |
| 587 | if (! NILP (tmp)) |
| 588 | return Qerror; |
| 589 | } |
| 590 | return val; |
| 591 | } |
| 592 | |
| 593 | /* Structure of known font property keys and validater of the |
| 594 | values. */ |
| 595 | struct |
| 596 | { |
| 597 | /* Pointer to the key symbol. */ |
| 598 | Lisp_Object *key; |
| 599 | /* Function to validate PROP's value VAL, or NULL if any value is |
| 600 | ok. The value is VAL or its regularized value if VAL is valid, |
| 601 | and Qerror if not. */ |
| 602 | Lisp_Object (*validater) P_ ((Lisp_Object prop, Lisp_Object val)); |
| 603 | } font_property_table[] = |
| 604 | { { &QCtype, font_prop_validate_symbol }, |
| 605 | { &QCfoundry, font_prop_validate_symbol }, |
| 606 | { &QCfamily, font_prop_validate_symbol }, |
| 607 | { &QCadstyle, font_prop_validate_symbol }, |
| 608 | { &QCregistry, font_prop_validate_symbol }, |
| 609 | { &QCweight, font_prop_validate_style }, |
| 610 | { &QCslant, font_prop_validate_style }, |
| 611 | { &QCwidth, font_prop_validate_style }, |
| 612 | { &QCsize, font_prop_validate_non_neg }, |
| 613 | { &QCdpi, font_prop_validate_non_neg }, |
| 614 | { &QCspacing, font_prop_validate_spacing }, |
| 615 | { &QCavgwidth, font_prop_validate_non_neg }, |
| 616 | /* The order of the above entries must match with enum |
| 617 | font_property_index. */ |
| 618 | { &QClang, font_prop_validate_symbol }, |
| 619 | { &QCscript, font_prop_validate_symbol }, |
| 620 | { &QCotf, font_prop_validate_otf } |
| 621 | }; |
| 622 | |
| 623 | /* Size (number of elements) of the above table. */ |
| 624 | #define FONT_PROPERTY_TABLE_SIZE \ |
| 625 | ((sizeof font_property_table) / (sizeof *font_property_table)) |
| 626 | |
| 627 | /* Return an index number of font property KEY or -1 if KEY is not an |
| 628 | already known property. */ |
| 629 | |
| 630 | static int |
| 631 | get_font_prop_index (key) |
| 632 | Lisp_Object key; |
| 633 | { |
| 634 | int i; |
| 635 | |
| 636 | for (i = 0; i < FONT_PROPERTY_TABLE_SIZE; i++) |
| 637 | if (EQ (key, *font_property_table[i].key)) |
| 638 | return i; |
| 639 | return -1; |
| 640 | } |
| 641 | |
| 642 | /* Validate the font property. The property key is specified by the |
| 643 | symbol PROP, or the index IDX (if PROP is nil). If VAL is invalid, |
| 644 | signal an error. The value is VAL or the regularized one. */ |
| 645 | |
| 646 | static Lisp_Object |
| 647 | font_prop_validate (idx, prop, val) |
| 648 | int idx; |
| 649 | Lisp_Object prop, val; |
| 650 | { |
| 651 | Lisp_Object validated; |
| 652 | |
| 653 | if (NILP (val)) |
| 654 | return val; |
| 655 | if (NILP (prop)) |
| 656 | prop = *font_property_table[idx].key; |
| 657 | else |
| 658 | { |
| 659 | idx = get_font_prop_index (prop); |
| 660 | if (idx < 0) |
| 661 | return val; |
| 662 | } |
| 663 | validated = (font_property_table[idx].validater) (prop, val); |
| 664 | if (EQ (validated, Qerror)) |
| 665 | signal_error ("invalid font property", Fcons (prop, val)); |
| 666 | return validated; |
| 667 | } |
| 668 | |
| 669 | |
| 670 | /* Store VAL as a value of extra font property PROP in FONT while |
| 671 | keeping the sorting order. Don't check the validity of VAL. */ |
| 672 | |
| 673 | Lisp_Object |
| 674 | font_put_extra (font, prop, val) |
| 675 | Lisp_Object font, prop, val; |
| 676 | { |
| 677 | Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX); |
| 678 | Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra)); |
| 679 | |
| 680 | if (NILP (slot)) |
| 681 | { |
| 682 | Lisp_Object prev = Qnil; |
| 683 | |
| 684 | while (CONSP (extra) |
| 685 | && NILP (Fstring_lessp (prop, XCAR (XCAR (extra))))) |
| 686 | prev = extra, extra = XCDR (extra); |
| 687 | if (NILP (prev)) |
| 688 | ASET (font, FONT_EXTRA_INDEX, Fcons (Fcons (prop, val), extra)); |
| 689 | else |
| 690 | XSETCDR (prev, Fcons (Fcons (prop, val), extra)); |
| 691 | return val; |
| 692 | } |
| 693 | XSETCDR (slot, val); |
| 694 | return val; |
| 695 | } |
| 696 | |
| 697 | \f |
| 698 | /* Font name parser and unparser */ |
| 699 | |
| 700 | static int parse_matrix P_ ((char *)); |
| 701 | static int font_expand_wildcards P_ ((Lisp_Object *, int)); |
| 702 | static int font_parse_name P_ ((char *, Lisp_Object)); |
| 703 | |
| 704 | /* An enumerator for each field of an XLFD font name. */ |
| 705 | enum xlfd_field_index |
| 706 | { |
| 707 | XLFD_FOUNDRY_INDEX, |
| 708 | XLFD_FAMILY_INDEX, |
| 709 | XLFD_WEIGHT_INDEX, |
| 710 | XLFD_SLANT_INDEX, |
| 711 | XLFD_SWIDTH_INDEX, |
| 712 | XLFD_ADSTYLE_INDEX, |
| 713 | XLFD_PIXEL_INDEX, |
| 714 | XLFD_POINT_INDEX, |
| 715 | XLFD_RESX_INDEX, |
| 716 | XLFD_RESY_INDEX, |
| 717 | XLFD_SPACING_INDEX, |
| 718 | XLFD_AVGWIDTH_INDEX, |
| 719 | XLFD_REGISTRY_INDEX, |
| 720 | XLFD_ENCODING_INDEX, |
| 721 | XLFD_LAST_INDEX |
| 722 | }; |
| 723 | |
| 724 | /* An enumerator for mask bit corresponding to each XLFD field. */ |
| 725 | enum xlfd_field_mask |
| 726 | { |
| 727 | XLFD_FOUNDRY_MASK = 0x0001, |
| 728 | XLFD_FAMILY_MASK = 0x0002, |
| 729 | XLFD_WEIGHT_MASK = 0x0004, |
| 730 | XLFD_SLANT_MASK = 0x0008, |
| 731 | XLFD_SWIDTH_MASK = 0x0010, |
| 732 | XLFD_ADSTYLE_MASK = 0x0020, |
| 733 | XLFD_PIXEL_MASK = 0x0040, |
| 734 | XLFD_POINT_MASK = 0x0080, |
| 735 | XLFD_RESX_MASK = 0x0100, |
| 736 | XLFD_RESY_MASK = 0x0200, |
| 737 | XLFD_SPACING_MASK = 0x0400, |
| 738 | XLFD_AVGWIDTH_MASK = 0x0800, |
| 739 | XLFD_REGISTRY_MASK = 0x1000, |
| 740 | XLFD_ENCODING_MASK = 0x2000 |
| 741 | }; |
| 742 | |
| 743 | |
| 744 | /* Parse P pointing the pixel/point size field of the form |
| 745 | `[A B C D]' which specifies a transformation matrix: |
| 746 | |
| 747 | A B 0 |
| 748 | C D 0 |
| 749 | 0 0 1 |
| 750 | |
| 751 | by which all glyphs of the font are transformed. The spec says |
| 752 | that scalar value N for the pixel/point size is equivalent to: |
| 753 | A = N * resx/resy, B = C = 0, D = N. |
| 754 | |
| 755 | Return the scalar value N if the form is valid. Otherwise return |
| 756 | -1. */ |
| 757 | |
| 758 | static int |
| 759 | parse_matrix (p) |
| 760 | char *p; |
| 761 | { |
| 762 | double matrix[4]; |
| 763 | char *end; |
| 764 | int i; |
| 765 | |
| 766 | for (i = 0, p++; i < 4 && *p && *p != ']'; i++) |
| 767 | { |
| 768 | if (*p == '~') |
| 769 | matrix[i] = - strtod (p + 1, &end); |
| 770 | else |
| 771 | matrix[i] = strtod (p, &end); |
| 772 | p = end; |
| 773 | } |
| 774 | return (i == 4 ? (int) matrix[3] : -1); |
| 775 | } |
| 776 | |
| 777 | /* Expand a wildcard field in FIELD (the first N fields are filled) to |
| 778 | multiple fields to fill in all 14 XLFD fields while restring a |
| 779 | field position by its contents. */ |
| 780 | |
| 781 | static int |
| 782 | font_expand_wildcards (field, n) |
| 783 | Lisp_Object field[XLFD_LAST_INDEX]; |
| 784 | int n; |
| 785 | { |
| 786 | /* Copy of FIELD. */ |
| 787 | Lisp_Object tmp[XLFD_LAST_INDEX]; |
| 788 | /* Array of information about where this element can go. Nth |
| 789 | element is for Nth element of FIELD. */ |
| 790 | struct { |
| 791 | /* Minimum possible field. */ |
| 792 | int from; |
| 793 | /* Maxinum possible field. */ |
| 794 | int to; |
| 795 | /* Bit mask of possible field. Nth bit corresponds to Nth field. */ |
| 796 | int mask; |
| 797 | } range[XLFD_LAST_INDEX]; |
| 798 | int i, j; |
| 799 | int range_from, range_to; |
| 800 | unsigned range_mask; |
| 801 | |
| 802 | #define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \ |
| 803 | | XLFD_ADSTYLE_MASK | XLFD_REGISTRY_MASK) |
| 804 | #define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK) |
| 805 | #define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \ |
| 806 | | XLFD_AVGWIDTH_MASK) |
| 807 | #define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK) |
| 808 | |
| 809 | /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th |
| 810 | field. The value is shifted to left one bit by one in the |
| 811 | following loop. */ |
| 812 | for (i = 0, range_mask = 0; i <= 14 - n; i++) |
| 813 | range_mask = (range_mask << 1) | 1; |
| 814 | |
| 815 | /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a |
| 816 | position-based retriction for FIELD[I]. */ |
| 817 | for (i = 0, range_from = 0, range_to = 14 - n; i < n; |
| 818 | i++, range_from++, range_to++, range_mask <<= 1) |
| 819 | { |
| 820 | Lisp_Object val = field[i]; |
| 821 | |
| 822 | tmp[i] = val; |
| 823 | if (NILP (val)) |
| 824 | { |
| 825 | /* Wildcard. */ |
| 826 | range[i].from = range_from; |
| 827 | range[i].to = range_to; |
| 828 | range[i].mask = range_mask; |
| 829 | } |
| 830 | else |
| 831 | { |
| 832 | /* The triplet FROM, TO, and MASK is a value-based |
| 833 | retriction for FIELD[I]. */ |
| 834 | int from, to; |
| 835 | unsigned mask; |
| 836 | |
| 837 | if (INTEGERP (val)) |
| 838 | { |
| 839 | int numeric = XINT (val); |
| 840 | |
| 841 | if (i + 1 == n) |
| 842 | from = to = XLFD_ENCODING_INDEX, |
| 843 | mask = XLFD_ENCODING_MASK; |
| 844 | else if (numeric == 0) |
| 845 | from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 846 | mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK; |
| 847 | else if (numeric <= 48) |
| 848 | from = to = XLFD_PIXEL_INDEX, |
| 849 | mask = XLFD_PIXEL_MASK; |
| 850 | else |
| 851 | from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX, |
| 852 | mask = XLFD_LARGENUM_MASK; |
| 853 | } |
| 854 | else if (SBYTES (SYMBOL_NAME (val)) == 0) |
| 855 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ADSTYLE_INDEX, |
| 856 | mask = XLFD_NULL_MASK; |
| 857 | else if (i == 0) |
| 858 | from = to = XLFD_FOUNDRY_INDEX, mask = XLFD_FOUNDRY_MASK; |
| 859 | else if (i + 1 == n) |
| 860 | { |
| 861 | Lisp_Object name = SYMBOL_NAME (val); |
| 862 | |
| 863 | if (SDATA (name)[SBYTES (name) - 1] == '*') |
| 864 | from = XLFD_REGISTRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 865 | mask = XLFD_REGENC_MASK; |
| 866 | else |
| 867 | from = to = XLFD_ENCODING_INDEX, |
| 868 | mask = XLFD_ENCODING_MASK; |
| 869 | } |
| 870 | else if (range_from <= XLFD_WEIGHT_INDEX |
| 871 | && range_to >= XLFD_WEIGHT_INDEX |
| 872 | && FONT_WEIGHT_NAME_NUMERIC (val) >= 0) |
| 873 | from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK; |
| 874 | else if (range_from <= XLFD_SLANT_INDEX |
| 875 | && range_to >= XLFD_SLANT_INDEX |
| 876 | && FONT_SLANT_NAME_NUMERIC (val) >= 0) |
| 877 | from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK; |
| 878 | else if (range_from <= XLFD_SWIDTH_INDEX |
| 879 | && range_to >= XLFD_SWIDTH_INDEX |
| 880 | && FONT_WIDTH_NAME_NUMERIC (val) >= 0) |
| 881 | from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK; |
| 882 | else |
| 883 | { |
| 884 | if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd)) |
| 885 | from = to = XLFD_SPACING_INDEX, mask = XLFD_SPACING_MASK; |
| 886 | else |
| 887 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ENCODING_INDEX, |
| 888 | mask = XLFD_SYMBOL_MASK; |
| 889 | } |
| 890 | |
| 891 | /* Merge position-based and value-based restrictions. */ |
| 892 | mask &= range_mask; |
| 893 | while (from < range_from) |
| 894 | mask &= ~(1 << from++); |
| 895 | while (from < 14 && ! (mask & (1 << from))) |
| 896 | from++; |
| 897 | while (to > range_to) |
| 898 | mask &= ~(1 << to--); |
| 899 | while (to >= 0 && ! (mask & (1 << to))) |
| 900 | to--; |
| 901 | if (from > to) |
| 902 | return -1; |
| 903 | range[i].from = from; |
| 904 | range[i].to = to; |
| 905 | range[i].mask = mask; |
| 906 | |
| 907 | if (from > range_from || to < range_to) |
| 908 | { |
| 909 | /* The range is narrowed by value-based restrictions. |
| 910 | Reflect it to the other fields. */ |
| 911 | |
| 912 | /* Following fields should be after FROM. */ |
| 913 | range_from = from; |
| 914 | /* Preceding fields should be before TO. */ |
| 915 | for (j = i - 1, from--, to--; j >= 0; j--, from--, to--) |
| 916 | { |
| 917 | /* Check FROM for non-wildcard field. */ |
| 918 | if (! NILP (tmp[j]) && range[j].from < from) |
| 919 | { |
| 920 | while (range[j].from < from) |
| 921 | range[j].mask &= ~(1 << range[j].from++); |
| 922 | while (from < 14 && ! (range[j].mask & (1 << from))) |
| 923 | from++; |
| 924 | range[j].from = from; |
| 925 | } |
| 926 | else |
| 927 | from = range[j].from; |
| 928 | if (range[j].to > to) |
| 929 | { |
| 930 | while (range[j].to > to) |
| 931 | range[j].mask &= ~(1 << range[j].to--); |
| 932 | while (to >= 0 && ! (range[j].mask & (1 << to))) |
| 933 | to--; |
| 934 | range[j].to = to; |
| 935 | } |
| 936 | else |
| 937 | to = range[j].to; |
| 938 | if (from > to) |
| 939 | return -1; |
| 940 | } |
| 941 | } |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | /* Decide all fileds from restrictions in RANGE. */ |
| 946 | for (i = j = 0; i < n ; i++) |
| 947 | { |
| 948 | if (j < range[i].from) |
| 949 | { |
| 950 | if (i == 0 || ! NILP (tmp[i - 1])) |
| 951 | /* None of TMP[X] corresponds to Jth field. */ |
| 952 | return -1; |
| 953 | for (; j < range[i].from; j++) |
| 954 | field[j] = Qnil; |
| 955 | } |
| 956 | field[j++] = tmp[i]; |
| 957 | } |
| 958 | if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX) |
| 959 | return -1; |
| 960 | for (; j < XLFD_LAST_INDEX; j++) |
| 961 | field[j] = Qnil; |
| 962 | if (INTEGERP (field[XLFD_ENCODING_INDEX])) |
| 963 | field[XLFD_ENCODING_INDEX] |
| 964 | = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil); |
| 965 | return 0; |
| 966 | } |
| 967 | |
| 968 | |
| 969 | #ifdef ENABLE_CHECKING |
| 970 | /* Match a 14-field XLFD pattern against a full XLFD font name. */ |
| 971 | static int |
| 972 | font_match_xlfd (char *pattern, char *name) |
| 973 | { |
| 974 | while (*pattern && *name) |
| 975 | { |
| 976 | if (*pattern == *name) |
| 977 | pattern++; |
| 978 | else if (*pattern == '*') |
| 979 | if (*name == pattern[1]) |
| 980 | pattern += 2; |
| 981 | else |
| 982 | ; |
| 983 | else |
| 984 | return 0; |
| 985 | name++; |
| 986 | } |
| 987 | return 1; |
| 988 | } |
| 989 | |
| 990 | /* Make sure the font object matches the XLFD font name. */ |
| 991 | static int |
| 992 | font_check_xlfd_parse (Lisp_Object font, char *name) |
| 993 | { |
| 994 | char name_check[256]; |
| 995 | font_unparse_xlfd (font, 0, name_check, 255); |
| 996 | return font_match_xlfd (name_check, name); |
| 997 | } |
| 998 | |
| 999 | #endif |
| 1000 | |
| 1001 | |
| 1002 | /* Parse NAME (null terminated) as XLFD and store information in FONT |
| 1003 | (font-spec or font-entity). Size property of FONT is set as |
| 1004 | follows: |
| 1005 | specified XLFD fields FONT property |
| 1006 | --------------------- ------------- |
| 1007 | PIXEL_SIZE PIXEL_SIZE (Lisp integer) |
| 1008 | POINT_SIZE and RESY calculated pixel size (Lisp integer) |
| 1009 | POINT_SIZE POINT_SIZE/10 (Lisp float) |
| 1010 | |
| 1011 | If NAME is successfully parsed, return 0. Otherwise return -1. |
| 1012 | |
| 1013 | FONT is usually a font-spec, but when this function is called from |
| 1014 | X font backend driver, it is a font-entity. In that case, NAME is |
| 1015 | a fully specified XLFD. */ |
| 1016 | |
| 1017 | int |
| 1018 | font_parse_xlfd (name, font) |
| 1019 | char *name; |
| 1020 | Lisp_Object font; |
| 1021 | { |
| 1022 | int len = strlen (name); |
| 1023 | int i, j, n; |
| 1024 | char *f[XLFD_LAST_INDEX + 1]; |
| 1025 | Lisp_Object val; |
| 1026 | char *p; |
| 1027 | |
| 1028 | if (len > 255) |
| 1029 | /* Maximum XLFD name length is 255. */ |
| 1030 | return -1; |
| 1031 | /* Accept "*-.." as a fully specified XLFD. */ |
| 1032 | if (name[0] == '*' && name[1] == '-') |
| 1033 | i = 1, f[XLFD_FOUNDRY_INDEX] = name; |
| 1034 | else |
| 1035 | i = 0; |
| 1036 | for (p = name + i; *p; p++) |
| 1037 | if (*p == '-') |
| 1038 | { |
| 1039 | f[i++] = p + 1; |
| 1040 | if (i == XLFD_LAST_INDEX) |
| 1041 | break; |
| 1042 | } |
| 1043 | f[i] = name + len; |
| 1044 | |
| 1045 | #define INTERN_FIELD(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 0) |
| 1046 | #define INTERN_FIELD_SYM(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 1) |
| 1047 | |
| 1048 | if (i == XLFD_LAST_INDEX) |
| 1049 | { |
| 1050 | /* Fully specified XLFD. */ |
| 1051 | int pixel_size; |
| 1052 | |
| 1053 | ASET (font, FONT_FOUNDRY_INDEX, INTERN_FIELD_SYM (XLFD_FOUNDRY_INDEX)); |
| 1054 | ASET (font, FONT_FAMILY_INDEX, INTERN_FIELD_SYM (XLFD_FAMILY_INDEX)); |
| 1055 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1056 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1057 | { |
| 1058 | val = INTERN_FIELD_SYM (i); |
| 1059 | if (! NILP (val)) |
| 1060 | { |
| 1061 | if ((n = font_style_to_value (j, INTERN_FIELD_SYM (i), 0)) < 0) |
| 1062 | return -1; |
| 1063 | ASET (font, j, make_number (n)); |
| 1064 | } |
| 1065 | } |
| 1066 | ASET (font, FONT_ADSTYLE_INDEX, INTERN_FIELD_SYM (XLFD_ADSTYLE_INDEX)); |
| 1067 | if (strcmp (f[XLFD_REGISTRY_INDEX], "*-*") == 0) |
| 1068 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 1069 | else |
| 1070 | ASET (font, FONT_REGISTRY_INDEX, |
| 1071 | font_intern_prop (f[XLFD_REGISTRY_INDEX], |
| 1072 | f[XLFD_LAST_INDEX] - f[XLFD_REGISTRY_INDEX], |
| 1073 | 1)); |
| 1074 | p = f[XLFD_PIXEL_INDEX]; |
| 1075 | if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0) |
| 1076 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 1077 | else |
| 1078 | { |
| 1079 | val = INTERN_FIELD (XLFD_PIXEL_INDEX); |
| 1080 | if (INTEGERP (val)) |
| 1081 | ASET (font, FONT_SIZE_INDEX, val); |
| 1082 | else |
| 1083 | { |
| 1084 | double point_size = -1; |
| 1085 | |
| 1086 | font_assert (FONT_SPEC_P (font)); |
| 1087 | p = f[XLFD_POINT_INDEX]; |
| 1088 | if (*p == '[') |
| 1089 | point_size = parse_matrix (p); |
| 1090 | else if (isdigit (*p)) |
| 1091 | point_size = atoi (p), point_size /= 10; |
| 1092 | if (point_size >= 0) |
| 1093 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | ASET (font, FONT_DPI_INDEX, INTERN_FIELD (XLFD_RESY_INDEX)); |
| 1098 | val = INTERN_FIELD (XLFD_SPACING_INDEX); |
| 1099 | if (! NILP (val)) |
| 1100 | { |
| 1101 | val = font_prop_validate_spacing (QCspacing, val); |
| 1102 | if (! INTEGERP (val)) |
| 1103 | return -1; |
| 1104 | ASET (font, FONT_SPACING_INDEX, val); |
| 1105 | } |
| 1106 | p = f[XLFD_AVGWIDTH_INDEX]; |
| 1107 | if (*p == '~') |
| 1108 | p++; |
| 1109 | ASET (font, FONT_AVGWIDTH_INDEX, |
| 1110 | font_intern_prop (p, f[XLFD_REGISTRY_INDEX] - 1 - p, 1)); |
| 1111 | } |
| 1112 | else |
| 1113 | { |
| 1114 | int wild_card_found = 0; |
| 1115 | Lisp_Object prop[XLFD_LAST_INDEX]; |
| 1116 | |
| 1117 | if (FONT_ENTITY_P (font)) |
| 1118 | return -1; |
| 1119 | for (j = 0; j < i; j++) |
| 1120 | { |
| 1121 | if (*f[j] == '*') |
| 1122 | { |
| 1123 | if (f[j][1] && f[j][1] != '-') |
| 1124 | return -1; |
| 1125 | prop[j] = Qnil; |
| 1126 | wild_card_found = 1; |
| 1127 | } |
| 1128 | else if (j + 1 < i) |
| 1129 | prop[j] = INTERN_FIELD (j); |
| 1130 | else |
| 1131 | prop[j] = font_intern_prop (f[j], f[i] - f[j], 0); |
| 1132 | } |
| 1133 | if (! wild_card_found) |
| 1134 | return -1; |
| 1135 | if (font_expand_wildcards (prop, i) < 0) |
| 1136 | return -1; |
| 1137 | |
| 1138 | ASET (font, FONT_FOUNDRY_INDEX, prop[XLFD_FOUNDRY_INDEX]); |
| 1139 | ASET (font, FONT_FAMILY_INDEX, prop[XLFD_FAMILY_INDEX]); |
| 1140 | for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX; |
| 1141 | i <= XLFD_SWIDTH_INDEX; i++, j++) |
| 1142 | if (! NILP (prop[i])) |
| 1143 | { |
| 1144 | if ((n = font_style_to_value (j, prop[i], 1)) < 0) |
| 1145 | return -1; |
| 1146 | ASET (font, j, make_number (n)); |
| 1147 | } |
| 1148 | ASET (font, FONT_ADSTYLE_INDEX, prop[XLFD_ADSTYLE_INDEX]); |
| 1149 | val = prop[XLFD_REGISTRY_INDEX]; |
| 1150 | if (NILP (val)) |
| 1151 | { |
| 1152 | val = prop[XLFD_ENCODING_INDEX]; |
| 1153 | if (! NILP (val)) |
| 1154 | val = concat2 (build_string ("*-"), SYMBOL_NAME (val)); |
| 1155 | } |
| 1156 | else if (NILP (prop[XLFD_ENCODING_INDEX])) |
| 1157 | val = concat2 (SYMBOL_NAME (val), build_string ("-*")); |
| 1158 | else |
| 1159 | val = concat3 (SYMBOL_NAME (val), build_string ("-"), |
| 1160 | SYMBOL_NAME (prop[XLFD_ENCODING_INDEX])); |
| 1161 | if (! NILP (val)) |
| 1162 | ASET (font, FONT_REGISTRY_INDEX, Fintern (val, Qnil)); |
| 1163 | |
| 1164 | if (INTEGERP (prop[XLFD_PIXEL_INDEX])) |
| 1165 | ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]); |
| 1166 | else if (INTEGERP (prop[XLFD_POINT_INDEX])) |
| 1167 | { |
| 1168 | double point_size = XINT (prop[XLFD_POINT_INDEX]); |
| 1169 | |
| 1170 | ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10)); |
| 1171 | } |
| 1172 | |
| 1173 | if (INTEGERP (prop[XLFD_RESX_INDEX])) |
| 1174 | ASET (font, FONT_DPI_INDEX, prop[XLFD_RESY_INDEX]); |
| 1175 | if (! NILP (prop[XLFD_SPACING_INDEX])) |
| 1176 | { |
| 1177 | val = font_prop_validate_spacing (QCspacing, |
| 1178 | prop[XLFD_SPACING_INDEX]); |
| 1179 | if (! INTEGERP (val)) |
| 1180 | return -1; |
| 1181 | ASET (font, FONT_SPACING_INDEX, val); |
| 1182 | } |
| 1183 | if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX])) |
| 1184 | ASET (font, FONT_AVGWIDTH_INDEX, prop[XLFD_AVGWIDTH_INDEX]); |
| 1185 | } |
| 1186 | |
| 1187 | return 0; |
| 1188 | } |
| 1189 | |
| 1190 | /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES |
| 1191 | length), and return the name length. If FONT_SIZE_INDEX of FONT is |
| 1192 | 0, use PIXEL_SIZE instead. */ |
| 1193 | |
| 1194 | int |
| 1195 | font_unparse_xlfd (font, pixel_size, name, nbytes) |
| 1196 | Lisp_Object font; |
| 1197 | int pixel_size; |
| 1198 | char *name; |
| 1199 | int nbytes; |
| 1200 | { |
| 1201 | char *f[XLFD_REGISTRY_INDEX + 1]; |
| 1202 | Lisp_Object val; |
| 1203 | int i, j, len = 0; |
| 1204 | |
| 1205 | font_assert (FONTP (font)); |
| 1206 | |
| 1207 | for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; |
| 1208 | i++, j++) |
| 1209 | { |
| 1210 | if (i == FONT_ADSTYLE_INDEX) |
| 1211 | j = XLFD_ADSTYLE_INDEX; |
| 1212 | else if (i == FONT_REGISTRY_INDEX) |
| 1213 | j = XLFD_REGISTRY_INDEX; |
| 1214 | val = AREF (font, i); |
| 1215 | if (NILP (val)) |
| 1216 | { |
| 1217 | if (j == XLFD_REGISTRY_INDEX) |
| 1218 | f[j] = "*-*", len += 4; |
| 1219 | else |
| 1220 | f[j] = "*", len += 2; |
| 1221 | } |
| 1222 | else |
| 1223 | { |
| 1224 | if (SYMBOLP (val)) |
| 1225 | val = SYMBOL_NAME (val); |
| 1226 | if (j == XLFD_REGISTRY_INDEX |
| 1227 | && ! strchr ((char *) SDATA (val), '-')) |
| 1228 | { |
| 1229 | /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */ |
| 1230 | if (SDATA (val)[SBYTES (val) - 1] == '*') |
| 1231 | { |
| 1232 | f[j] = alloca (SBYTES (val) + 3); |
| 1233 | sprintf (f[j], "%s-*", SDATA (val)); |
| 1234 | len += SBYTES (val) + 3; |
| 1235 | } |
| 1236 | else |
| 1237 | { |
| 1238 | f[j] = alloca (SBYTES (val) + 4); |
| 1239 | sprintf (f[j], "%s*-*", SDATA (val)); |
| 1240 | len += SBYTES (val) + 4; |
| 1241 | } |
| 1242 | } |
| 1243 | else |
| 1244 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; |
| 1249 | i++, j++) |
| 1250 | { |
| 1251 | val = font_style_symbolic (font, i, 0); |
| 1252 | if (NILP (val)) |
| 1253 | f[j] = "*", len += 2; |
| 1254 | else |
| 1255 | { |
| 1256 | val = SYMBOL_NAME (val); |
| 1257 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; |
| 1258 | } |
| 1259 | } |
| 1260 | |
| 1261 | val = AREF (font, FONT_SIZE_INDEX); |
| 1262 | font_assert (NUMBERP (val) || NILP (val)); |
| 1263 | if (INTEGERP (val)) |
| 1264 | { |
| 1265 | i = XINT (val); |
| 1266 | if (i <= 0) |
| 1267 | i = pixel_size; |
| 1268 | if (i > 0) |
| 1269 | { |
| 1270 | f[XLFD_PIXEL_INDEX] = alloca (22); |
| 1271 | len += sprintf (f[XLFD_PIXEL_INDEX], "%d-*", i) + 1; |
| 1272 | } |
| 1273 | else |
| 1274 | f[XLFD_PIXEL_INDEX] = "*-*", len += 4; |
| 1275 | } |
| 1276 | else if (FLOATP (val)) |
| 1277 | { |
| 1278 | i = XFLOAT_DATA (val) * 10; |
| 1279 | f[XLFD_PIXEL_INDEX] = alloca (12); |
| 1280 | len += sprintf (f[XLFD_PIXEL_INDEX], "*-%d", i) + 1; |
| 1281 | } |
| 1282 | else |
| 1283 | f[XLFD_PIXEL_INDEX] = "*-*", len += 4; |
| 1284 | |
| 1285 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1286 | { |
| 1287 | i = XINT (AREF (font, FONT_DPI_INDEX)); |
| 1288 | f[XLFD_RESX_INDEX] = alloca (22); |
| 1289 | len += sprintf (f[XLFD_RESX_INDEX], |
| 1290 | "%d-%d", i, i) + 1; |
| 1291 | } |
| 1292 | else |
| 1293 | f[XLFD_RESX_INDEX] = "*-*", len += 4; |
| 1294 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1295 | { |
| 1296 | int spacing = XINT (AREF (font, FONT_SPACING_INDEX)); |
| 1297 | |
| 1298 | f[XLFD_SPACING_INDEX] = (spacing <= FONT_SPACING_PROPORTIONAL ? "p" |
| 1299 | : spacing <= FONT_SPACING_DUAL ? "d" |
| 1300 | : spacing <= FONT_SPACING_MONO ? "m" |
| 1301 | : "c"); |
| 1302 | len += 2; |
| 1303 | } |
| 1304 | else |
| 1305 | f[XLFD_SPACING_INDEX] = "*", len += 2; |
| 1306 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1307 | { |
| 1308 | f[XLFD_AVGWIDTH_INDEX] = alloca (11); |
| 1309 | len += sprintf (f[XLFD_AVGWIDTH_INDEX], |
| 1310 | "%d", XINT (AREF (font, FONT_AVGWIDTH_INDEX))) + 1; |
| 1311 | } |
| 1312 | else |
| 1313 | f[XLFD_AVGWIDTH_INDEX] = "*", len += 2; |
| 1314 | len++; /* for terminating '\0'. */ |
| 1315 | if (len >= nbytes) |
| 1316 | return -1; |
| 1317 | return sprintf (name, "-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s-%s", |
| 1318 | f[XLFD_FOUNDRY_INDEX], f[XLFD_FAMILY_INDEX], |
| 1319 | f[XLFD_WEIGHT_INDEX], f[XLFD_SLANT_INDEX], |
| 1320 | f[XLFD_SWIDTH_INDEX], f[XLFD_ADSTYLE_INDEX], |
| 1321 | f[XLFD_PIXEL_INDEX], f[XLFD_RESX_INDEX], |
| 1322 | f[XLFD_SPACING_INDEX], f[XLFD_AVGWIDTH_INDEX], |
| 1323 | f[XLFD_REGISTRY_INDEX]); |
| 1324 | } |
| 1325 | |
| 1326 | /* Parse NAME (null terminated) and store information in FONT |
| 1327 | (font-spec or font-entity). NAME is supplied in either the |
| 1328 | Fontconfig or GTK font name format. If NAME is successfully |
| 1329 | parsed, return 0. Otherwise return -1. |
| 1330 | |
| 1331 | The fontconfig format is |
| 1332 | |
| 1333 | FAMILY[-SIZE][:PROP1[=VAL1][:PROP2[=VAL2]...]] |
| 1334 | |
| 1335 | The GTK format is |
| 1336 | |
| 1337 | FAMILY [PROPS...] [SIZE] |
| 1338 | |
| 1339 | This function tries to guess which format it is. */ |
| 1340 | |
| 1341 | int |
| 1342 | font_parse_fcname (name, font) |
| 1343 | char *name; |
| 1344 | Lisp_Object font; |
| 1345 | { |
| 1346 | char *p, *q; |
| 1347 | char *size_beg = NULL, *size_end = NULL; |
| 1348 | char *props_beg = NULL, *family_end = NULL; |
| 1349 | int len = strlen (name); |
| 1350 | |
| 1351 | if (len == 0) |
| 1352 | return -1; |
| 1353 | |
| 1354 | for (p = name; *p; p++) |
| 1355 | { |
| 1356 | if (*p == '\\' && p[1]) |
| 1357 | p++; |
| 1358 | else if (*p == ':') |
| 1359 | { |
| 1360 | family_end = p; |
| 1361 | props_beg = p + 1; |
| 1362 | break; |
| 1363 | } |
| 1364 | else if (*p == '-') |
| 1365 | { |
| 1366 | int size_found = 1; |
| 1367 | for (q = p + 1; *q && *q != ':'; q++) |
| 1368 | if (! isdigit(*q) && *q != '.') |
| 1369 | { |
| 1370 | size_found = 0; |
| 1371 | break; |
| 1372 | } |
| 1373 | if (size_found) |
| 1374 | { |
| 1375 | family_end = p; |
| 1376 | size_beg = p + 1; |
| 1377 | size_end = q; |
| 1378 | break; |
| 1379 | } |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | if (family_end) |
| 1384 | { |
| 1385 | /* A fontconfig name with size and/or property data. */ |
| 1386 | if (family_end > name) |
| 1387 | { |
| 1388 | Lisp_Object family; |
| 1389 | family = font_intern_prop (name, family_end - name, 1); |
| 1390 | ASET (font, FONT_FAMILY_INDEX, family); |
| 1391 | } |
| 1392 | if (size_beg) |
| 1393 | { |
| 1394 | double point_size = strtod (size_beg, &size_end); |
| 1395 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1396 | if (*size_end == ':' && size_end[1]) |
| 1397 | props_beg = size_end + 1; |
| 1398 | } |
| 1399 | if (props_beg) |
| 1400 | { |
| 1401 | /* Now parse ":KEY=VAL" patterns. Store known keys and values in |
| 1402 | extra, copy unknown ones to COPY. It is stored in extra slot by |
| 1403 | the key QCfc_unknown_spec. */ |
| 1404 | char *copy; |
| 1405 | |
| 1406 | name = copy = alloca (name + len - props_beg); |
| 1407 | if (! copy) |
| 1408 | return -1; |
| 1409 | |
| 1410 | p = props_beg; |
| 1411 | while (*p) |
| 1412 | { |
| 1413 | Lisp_Object val; |
| 1414 | int word_len, prop; |
| 1415 | |
| 1416 | #define PROP_MATCH(STR,N) ((word_len == N) && memcmp (p, STR, N) == 0) |
| 1417 | |
| 1418 | for (q = p + 1; *q && *q != '=' && *q != ':'; q++); |
| 1419 | word_len = q - p; |
| 1420 | if (*q != '=') |
| 1421 | { |
| 1422 | /* Must be an enumerated value. */ |
| 1423 | val = font_intern_prop (p, q - p, 1); |
| 1424 | if (PROP_MATCH ("light", 5) |
| 1425 | || PROP_MATCH ("medium", 6) |
| 1426 | || PROP_MATCH ("demibold", 8) |
| 1427 | || PROP_MATCH ("bold", 4) |
| 1428 | || PROP_MATCH ("black", 5)) |
| 1429 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, val); |
| 1430 | else if (PROP_MATCH ("roman", 5) |
| 1431 | || PROP_MATCH ("italic", 6) |
| 1432 | || PROP_MATCH ("oblique", 7)) |
| 1433 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, val); |
| 1434 | else if (PROP_MATCH ("charcell", 8)) |
| 1435 | ASET (font, FONT_SPACING_INDEX, |
| 1436 | make_number (FONT_SPACING_CHARCELL)); |
| 1437 | else if (PROP_MATCH ("mono", 4)) |
| 1438 | ASET (font, FONT_SPACING_INDEX, |
| 1439 | make_number (FONT_SPACING_MONO)); |
| 1440 | else if (PROP_MATCH ("proportional", 12)) |
| 1441 | ASET (font, FONT_SPACING_INDEX, |
| 1442 | make_number (FONT_SPACING_PROPORTIONAL)); |
| 1443 | else |
| 1444 | { |
| 1445 | /* Unknown key */ |
| 1446 | bcopy (p, copy, word_len); |
| 1447 | copy += word_len; |
| 1448 | } |
| 1449 | } |
| 1450 | else /* KEY=VAL pairs */ |
| 1451 | { |
| 1452 | Lisp_Object key; |
| 1453 | char *keyhead = p; |
| 1454 | |
| 1455 | if (PROP_MATCH ("pixelsize=", 10)) |
| 1456 | prop = FONT_SIZE_INDEX; |
| 1457 | else |
| 1458 | { |
| 1459 | key = font_intern_prop (p, q - p, 1); |
| 1460 | prop = get_font_prop_index (key); |
| 1461 | } |
| 1462 | p = q + 1; |
| 1463 | for (q = p; *q && *q != ':'; q++); |
| 1464 | |
| 1465 | val = font_intern_prop (p, word_len, 0); |
| 1466 | if (! NILP (val)) |
| 1467 | { |
| 1468 | if (prop >= FONT_FOUNDRY_INDEX |
| 1469 | && prop < FONT_EXTRA_INDEX) |
| 1470 | ASET (font, prop, |
| 1471 | font_prop_validate (prop, Qnil, val)); |
| 1472 | else if (prop >= 0) |
| 1473 | Ffont_put (font, key, val); |
| 1474 | else |
| 1475 | bcopy (keyhead, copy, q - keyhead); |
| 1476 | copy += q - keyhead; |
| 1477 | } |
| 1478 | } |
| 1479 | p = *q ? q + 1 : q; |
| 1480 | #undef PROP_MATCH |
| 1481 | } |
| 1482 | if (name != copy) |
| 1483 | font_put_extra (font, QCfc_unknown_spec, |
| 1484 | make_unibyte_string (name, copy - name)); |
| 1485 | } |
| 1486 | } |
| 1487 | else |
| 1488 | { |
| 1489 | /* Either a fontconfig-style name with no size and property |
| 1490 | data, or a GTK-style name. */ |
| 1491 | Lisp_Object prop; |
| 1492 | int word_len, prop_found = 0; |
| 1493 | |
| 1494 | for (p = name; *p; p = *q ? q + 1 : q) |
| 1495 | { |
| 1496 | if (isdigit (*p)) |
| 1497 | { |
| 1498 | char *r; |
| 1499 | int size_found = 1; |
| 1500 | for (q = p + 1; *q && *q != ' '; q++) |
| 1501 | if (! isdigit (*q)) |
| 1502 | { |
| 1503 | size_found = 0; |
| 1504 | break; |
| 1505 | } |
| 1506 | if (size_found) |
| 1507 | { |
| 1508 | double point_size = strtod (p, &q); |
| 1509 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); |
| 1510 | continue; |
| 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | for (q = p + 1; *q && *q != ' '; q++) |
| 1515 | if (*q == '\\' && q[1]) |
| 1516 | q++; |
| 1517 | word_len = q - p; |
| 1518 | |
| 1519 | #define PROP_MATCH(STR,N) ((word_len == N) && memcmp (p, STR, N) == 0) |
| 1520 | |
| 1521 | if (PROP_MATCH ("Ultra-Light", 11)) |
| 1522 | { |
| 1523 | prop_found = 1; |
| 1524 | prop = font_intern_prop ("ultra-light", 11, 1); |
| 1525 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, prop); |
| 1526 | } |
| 1527 | else if (PROP_MATCH ("Light", 5)) |
| 1528 | { |
| 1529 | prop_found = 1; |
| 1530 | prop = font_intern_prop ("light", 5, 1); |
| 1531 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, prop); |
| 1532 | } |
| 1533 | else if (PROP_MATCH ("Semi-Bold", 9)) |
| 1534 | { |
| 1535 | prop_found = 1; |
| 1536 | prop = font_intern_prop ("semi-bold", 9, 1); |
| 1537 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, prop); |
| 1538 | } |
| 1539 | else if (PROP_MATCH ("Bold", 4)) |
| 1540 | { |
| 1541 | prop_found = 1; |
| 1542 | prop = font_intern_prop ("bold", 4, 1); |
| 1543 | FONT_SET_STYLE (font, FONT_WEIGHT_INDEX, prop); |
| 1544 | } |
| 1545 | else if (PROP_MATCH ("Italic", 6)) |
| 1546 | { |
| 1547 | prop_found = 1; |
| 1548 | prop = font_intern_prop ("italic", 4, 1); |
| 1549 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, prop); |
| 1550 | } |
| 1551 | else if (PROP_MATCH ("Oblique", 7)) |
| 1552 | { |
| 1553 | prop_found = 1; |
| 1554 | prop = font_intern_prop ("oblique", 7, 1); |
| 1555 | FONT_SET_STYLE (font, FONT_SLANT_INDEX, prop); |
| 1556 | } |
| 1557 | else { |
| 1558 | if (prop_found) |
| 1559 | return -1; /* Unknown property in GTK-style font name. */ |
| 1560 | family_end = q; |
| 1561 | } |
| 1562 | } |
| 1563 | #undef PROP_MATCH |
| 1564 | |
| 1565 | if (family_end) |
| 1566 | { |
| 1567 | Lisp_Object family; |
| 1568 | family = font_intern_prop (name, family_end - name, 1); |
| 1569 | ASET (font, FONT_FAMILY_INDEX, family); |
| 1570 | } |
| 1571 | } |
| 1572 | |
| 1573 | return 0; |
| 1574 | } |
| 1575 | |
| 1576 | /* Store fontconfig's font name of FONT (font-spec or font-entity) in |
| 1577 | NAME (NBYTES length), and return the name length. If |
| 1578 | FONT_SIZE_INDEX of FONT is 0, use PIXEL_SIZE instead. */ |
| 1579 | |
| 1580 | int |
| 1581 | font_unparse_fcname (font, pixel_size, name, nbytes) |
| 1582 | Lisp_Object font; |
| 1583 | int pixel_size; |
| 1584 | char *name; |
| 1585 | int nbytes; |
| 1586 | { |
| 1587 | Lisp_Object tail, val; |
| 1588 | int point_size; |
| 1589 | int dpi; |
| 1590 | int i, len = 1; |
| 1591 | char *p; |
| 1592 | Lisp_Object styles[3]; |
| 1593 | char *style_names[3] = { "weight", "slant", "width" }; |
| 1594 | char work[256]; |
| 1595 | |
| 1596 | val = AREF (font, FONT_FAMILY_INDEX); |
| 1597 | if (STRINGP (val)) |
| 1598 | len += SBYTES (val); |
| 1599 | |
| 1600 | val = AREF (font, FONT_SIZE_INDEX); |
| 1601 | if (INTEGERP (val)) |
| 1602 | { |
| 1603 | if (XINT (val) != 0) |
| 1604 | pixel_size = XINT (val); |
| 1605 | point_size = -1; |
| 1606 | len += 21; /* for ":pixelsize=NUM" */ |
| 1607 | } |
| 1608 | else if (FLOATP (val)) |
| 1609 | { |
| 1610 | pixel_size = -1; |
| 1611 | point_size = (int) XFLOAT_DATA (val); |
| 1612 | len += 11; /* for "-NUM" */ |
| 1613 | } |
| 1614 | |
| 1615 | val = AREF (font, FONT_FOUNDRY_INDEX); |
| 1616 | if (STRINGP (val)) |
| 1617 | /* ":foundry=NAME" */ |
| 1618 | len += 9 + SBYTES (val); |
| 1619 | |
| 1620 | for (i = 0; i < 3; i++) |
| 1621 | { |
| 1622 | styles[i] = font_style_symbolic (font, FONT_WEIGHT_INDEX + i, 0); |
| 1623 | if (! NILP (styles[i])) |
| 1624 | len += sprintf (work, ":%s=%s", style_names[i], |
| 1625 | SDATA (SYMBOL_NAME (styles[i]))); |
| 1626 | } |
| 1627 | |
| 1628 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1629 | len += sprintf (work, ":dpi=%d", dpi); |
| 1630 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1631 | len += strlen (":spacing=100"); |
| 1632 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1633 | len += strlen (":scalable=false"); /* or ":scalable=true" */ |
| 1634 | for (tail = AREF (font, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
| 1635 | { |
| 1636 | Lisp_Object key = XCAR (XCAR (tail)), val = XCDR (XCAR (tail)); |
| 1637 | |
| 1638 | len += SBYTES (SYMBOL_NAME (key)) + 1; /* for :KEY= */ |
| 1639 | if (STRINGP (val)) |
| 1640 | len += SBYTES (val); |
| 1641 | else if (INTEGERP (val)) |
| 1642 | len += sprintf (work, "%d", XINT (val)); |
| 1643 | else if (SYMBOLP (val)) |
| 1644 | len += (NILP (val) ? 5 : 4); /* for "false" or "true" */ |
| 1645 | } |
| 1646 | |
| 1647 | if (len > nbytes) |
| 1648 | return -1; |
| 1649 | p = name; |
| 1650 | if (! NILP (AREF (font, FONT_FAMILY_INDEX))) |
| 1651 | p += sprintf(p, "%s", SDATA (SYMBOL_NAME (AREF (font, FONT_FAMILY_INDEX)))); |
| 1652 | if (point_size > 0) |
| 1653 | { |
| 1654 | if (p == name) |
| 1655 | p += sprintf (p, "%d", point_size); |
| 1656 | else |
| 1657 | p += sprintf (p, "-%d", point_size); |
| 1658 | } |
| 1659 | else if (pixel_size > 0) |
| 1660 | p += sprintf (p, ":pixelsize=%d", pixel_size); |
| 1661 | if (! NILP (AREF (font, FONT_FOUNDRY_INDEX))) |
| 1662 | p += sprintf (p, ":foundry=%s", |
| 1663 | SDATA (SYMBOL_NAME (AREF (font, FONT_FOUNDRY_INDEX)))); |
| 1664 | for (i = 0; i < 3; i++) |
| 1665 | if (! NILP (styles[i])) |
| 1666 | p += sprintf (p, ":%s=%s", style_names[i], |
| 1667 | SDATA (SYMBOL_NAME (styles[i]))); |
| 1668 | if (INTEGERP (AREF (font, FONT_DPI_INDEX))) |
| 1669 | p += sprintf (p, ":dpi=%d", XINT (AREF (font, FONT_DPI_INDEX))); |
| 1670 | if (INTEGERP (AREF (font, FONT_SPACING_INDEX))) |
| 1671 | p += sprintf (p, ":spacing=%d", XINT (AREF (font, FONT_SPACING_INDEX))); |
| 1672 | if (INTEGERP (AREF (font, FONT_AVGWIDTH_INDEX))) |
| 1673 | { |
| 1674 | if (XINT (AREF (font, FONT_AVGWIDTH_INDEX)) == 0) |
| 1675 | p += sprintf (p, ":scalable=true"); |
| 1676 | else |
| 1677 | p += sprintf (p, ":scalable=false"); |
| 1678 | } |
| 1679 | return (p - name); |
| 1680 | } |
| 1681 | |
| 1682 | /* Parse NAME (null terminated) and store information in FONT |
| 1683 | (font-spec or font-entity). If NAME is successfully parsed, return |
| 1684 | 0. Otherwise return -1. */ |
| 1685 | |
| 1686 | static int |
| 1687 | font_parse_name (name, font) |
| 1688 | char *name; |
| 1689 | Lisp_Object font; |
| 1690 | { |
| 1691 | if (name[0] == '-' || index (name, '*')) |
| 1692 | return font_parse_xlfd (name, font); |
| 1693 | return font_parse_fcname (name, font); |
| 1694 | } |
| 1695 | |
| 1696 | |
| 1697 | /* Merge FAMILY and REGISTRY into FONT_SPEC. FAMILY may have the form |
| 1698 | "FAMILY-FOUNDRY". REGISTRY may not contain charset-encoding |
| 1699 | part. */ |
| 1700 | |
| 1701 | void |
| 1702 | font_parse_family_registry (family, registry, font_spec) |
| 1703 | Lisp_Object family, registry, font_spec; |
| 1704 | { |
| 1705 | int len; |
| 1706 | char *p0, *p1; |
| 1707 | |
| 1708 | if (! NILP (family) |
| 1709 | && NILP (AREF (font_spec, FONT_FAMILY_INDEX))) |
| 1710 | { |
| 1711 | CHECK_STRING (family); |
| 1712 | len = SBYTES (family); |
| 1713 | p0 = (char *) SDATA (family); |
| 1714 | p1 = index (p0, '-'); |
| 1715 | if (p1) |
| 1716 | { |
| 1717 | if ((*p0 != '*' || p1 - p0 > 1) |
| 1718 | && NILP (AREF (font_spec, FONT_FOUNDRY_INDEX))) |
| 1719 | Ffont_put (font_spec, QCfoundry, font_intern_prop (p0, p1 - p0, 1)); |
| 1720 | p1++; |
| 1721 | len -= p1 - p0; |
| 1722 | Ffont_put (font_spec, QCfamily, font_intern_prop (p1, len, 1)); |
| 1723 | } |
| 1724 | else |
| 1725 | ASET (font_spec, FONT_FAMILY_INDEX, Fintern (family, Qnil)); |
| 1726 | } |
| 1727 | if (! NILP (registry)) |
| 1728 | { |
| 1729 | /* Convert "XXX" and "XXX*" to "XXX*-*". */ |
| 1730 | CHECK_STRING (registry); |
| 1731 | len = SBYTES (registry); |
| 1732 | p0 = (char *) SDATA (registry); |
| 1733 | p1 = index (p0, '-'); |
| 1734 | if (! p1) |
| 1735 | { |
| 1736 | if (SDATA (registry)[len - 1] == '*') |
| 1737 | registry = concat2 (registry, build_string ("-*")); |
| 1738 | else |
| 1739 | registry = concat2 (registry, build_string ("*-*")); |
| 1740 | } |
| 1741 | registry = Fdowncase (registry); |
| 1742 | ASET (font_spec, FONT_REGISTRY_INDEX, Fintern (registry, Qnil)); |
| 1743 | } |
| 1744 | } |
| 1745 | |
| 1746 | \f |
| 1747 | /* This part (through the next ^L) is still experimental and not |
| 1748 | tested much. We may drastically change codes. */ |
| 1749 | |
| 1750 | /* OTF handler */ |
| 1751 | |
| 1752 | #if 0 |
| 1753 | |
| 1754 | #define LGSTRING_HEADER_SIZE 6 |
| 1755 | #define LGSTRING_GLYPH_SIZE 8 |
| 1756 | |
| 1757 | static int |
| 1758 | check_gstring (gstring) |
| 1759 | Lisp_Object gstring; |
| 1760 | { |
| 1761 | Lisp_Object val; |
| 1762 | int i, j; |
| 1763 | |
| 1764 | CHECK_VECTOR (gstring); |
| 1765 | val = AREF (gstring, 0); |
| 1766 | CHECK_VECTOR (val); |
| 1767 | if (ASIZE (val) < LGSTRING_HEADER_SIZE) |
| 1768 | goto err; |
| 1769 | CHECK_FONT_OBJECT (LGSTRING_FONT (gstring)); |
| 1770 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING))) |
| 1771 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_LBEARING)); |
| 1772 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING))) |
| 1773 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_RBEARING)); |
| 1774 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH))) |
| 1775 | CHECK_NATNUM (LGSTRING_SLOT (gstring, LGSTRING_IX_WIDTH)); |
| 1776 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1777 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1778 | if (!NILP (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT))) |
| 1779 | CHECK_NUMBER (LGSTRING_SLOT (gstring, LGSTRING_IX_ASCENT)); |
| 1780 | |
| 1781 | for (i = 0; i < LGSTRING_LENGTH (gstring); i++) |
| 1782 | { |
| 1783 | val = LGSTRING_GLYPH (gstring, i); |
| 1784 | CHECK_VECTOR (val); |
| 1785 | if (ASIZE (val) < LGSTRING_GLYPH_SIZE) |
| 1786 | goto err; |
| 1787 | if (NILP (AREF (val, LGLYPH_IX_CHAR))) |
| 1788 | break; |
| 1789 | CHECK_NATNUM (AREF (val, LGLYPH_IX_FROM)); |
| 1790 | CHECK_NATNUM (AREF (val, LGLYPH_IX_TO)); |
| 1791 | CHECK_CHARACTER (AREF (val, LGLYPH_IX_CHAR)); |
| 1792 | if (!NILP (AREF (val, LGLYPH_IX_CODE))) |
| 1793 | CHECK_NATNUM (AREF (val, LGLYPH_IX_CODE)); |
| 1794 | if (!NILP (AREF (val, LGLYPH_IX_WIDTH))) |
| 1795 | CHECK_NATNUM (AREF (val, LGLYPH_IX_WIDTH)); |
| 1796 | if (!NILP (AREF (val, LGLYPH_IX_ADJUSTMENT))) |
| 1797 | { |
| 1798 | val = AREF (val, LGLYPH_IX_ADJUSTMENT); |
| 1799 | CHECK_VECTOR (val); |
| 1800 | if (ASIZE (val) < 3) |
| 1801 | goto err; |
| 1802 | for (j = 0; j < 3; j++) |
| 1803 | CHECK_NUMBER (AREF (val, j)); |
| 1804 | } |
| 1805 | } |
| 1806 | return i; |
| 1807 | err: |
| 1808 | error ("Invalid glyph-string format"); |
| 1809 | return -1; |
| 1810 | } |
| 1811 | |
| 1812 | static void |
| 1813 | check_otf_features (otf_features) |
| 1814 | Lisp_Object otf_features; |
| 1815 | { |
| 1816 | Lisp_Object val; |
| 1817 | |
| 1818 | CHECK_CONS (otf_features); |
| 1819 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1820 | otf_features = XCDR (otf_features); |
| 1821 | CHECK_CONS (otf_features); |
| 1822 | CHECK_SYMBOL (XCAR (otf_features)); |
| 1823 | otf_features = XCDR (otf_features); |
| 1824 | for (val = Fcar (otf_features); ! NILP (val); val = Fcdr (val)) |
| 1825 | { |
| 1826 | CHECK_SYMBOL (Fcar (val)); |
| 1827 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1828 | error ("Invalid OTF GSUB feature: %s", SYMBOL_NAME (XCAR (val))); |
| 1829 | } |
| 1830 | otf_features = XCDR (otf_features); |
| 1831 | for (val = Fcar (otf_features); ! NILP (val); val = Fcdr (val)) |
| 1832 | { |
| 1833 | CHECK_SYMBOL (Fcar (val)); |
| 1834 | if (SBYTES (SYMBOL_NAME (XCAR (val))) > 4) |
| 1835 | error ("Invalid OTF GPOS feature: %s", SYMBOL_NAME (XCAR (val))); |
| 1836 | } |
| 1837 | } |
| 1838 | |
| 1839 | #ifdef HAVE_LIBOTF |
| 1840 | #include <otf.h> |
| 1841 | |
| 1842 | Lisp_Object otf_list; |
| 1843 | |
| 1844 | static Lisp_Object |
| 1845 | otf_tag_symbol (tag) |
| 1846 | OTF_Tag tag; |
| 1847 | { |
| 1848 | char name[5]; |
| 1849 | |
| 1850 | OTF_tag_name (tag, name); |
| 1851 | return Fintern (make_unibyte_string (name, 4), Qnil); |
| 1852 | } |
| 1853 | |
| 1854 | static OTF * |
| 1855 | otf_open (file) |
| 1856 | Lisp_Object file; |
| 1857 | { |
| 1858 | Lisp_Object val = Fassoc (file, otf_list); |
| 1859 | OTF *otf; |
| 1860 | |
| 1861 | if (! NILP (val)) |
| 1862 | otf = XSAVE_VALUE (XCDR (val))->pointer; |
| 1863 | else |
| 1864 | { |
| 1865 | otf = STRINGP (file) ? OTF_open ((char *) SDATA (file)) : NULL; |
| 1866 | val = make_save_value (otf, 0); |
| 1867 | otf_list = Fcons (Fcons (file, val), otf_list); |
| 1868 | } |
| 1869 | return otf; |
| 1870 | } |
| 1871 | |
| 1872 | |
| 1873 | /* Return a list describing which scripts/languages FONT supports by |
| 1874 | which GSUB/GPOS features of OpenType tables. See the comment of |
| 1875 | (struct font_driver).otf_capability. */ |
| 1876 | |
| 1877 | Lisp_Object |
| 1878 | font_otf_capability (font) |
| 1879 | struct font *font; |
| 1880 | { |
| 1881 | OTF *otf; |
| 1882 | Lisp_Object capability = Fcons (Qnil, Qnil); |
| 1883 | int i; |
| 1884 | |
| 1885 | otf = otf_open (font->props[FONT_FILE_INDEX]); |
| 1886 | if (! otf) |
| 1887 | return Qnil; |
| 1888 | for (i = 0; i < 2; i++) |
| 1889 | { |
| 1890 | OTF_GSUB_GPOS *gsub_gpos; |
| 1891 | Lisp_Object script_list = Qnil; |
| 1892 | int j; |
| 1893 | |
| 1894 | if (OTF_get_features (otf, i == 0) < 0) |
| 1895 | continue; |
| 1896 | gsub_gpos = i == 0 ? otf->gsub : otf->gpos; |
| 1897 | for (j = gsub_gpos->ScriptList.ScriptCount - 1; j >= 0; j--) |
| 1898 | { |
| 1899 | OTF_Script *script = gsub_gpos->ScriptList.Script + j; |
| 1900 | Lisp_Object langsys_list = Qnil; |
| 1901 | Lisp_Object script_tag = otf_tag_symbol (script->ScriptTag); |
| 1902 | int k; |
| 1903 | |
| 1904 | for (k = script->LangSysCount; k >= 0; k--) |
| 1905 | { |
| 1906 | OTF_LangSys *langsys; |
| 1907 | Lisp_Object feature_list = Qnil; |
| 1908 | Lisp_Object langsys_tag; |
| 1909 | int l; |
| 1910 | |
| 1911 | if (k == script->LangSysCount) |
| 1912 | { |
| 1913 | langsys = &script->DefaultLangSys; |
| 1914 | langsys_tag = Qnil; |
| 1915 | } |
| 1916 | else |
| 1917 | { |
| 1918 | langsys = script->LangSys + k; |
| 1919 | langsys_tag |
| 1920 | = otf_tag_symbol (script->LangSysRecord[k].LangSysTag); |
| 1921 | } |
| 1922 | for (l = langsys->FeatureCount - 1; l >= 0; l--) |
| 1923 | { |
| 1924 | OTF_Feature *feature |
| 1925 | = gsub_gpos->FeatureList.Feature + langsys->FeatureIndex[l]; |
| 1926 | Lisp_Object feature_tag |
| 1927 | = otf_tag_symbol (feature->FeatureTag); |
| 1928 | |
| 1929 | feature_list = Fcons (feature_tag, feature_list); |
| 1930 | } |
| 1931 | langsys_list = Fcons (Fcons (langsys_tag, feature_list), |
| 1932 | langsys_list); |
| 1933 | } |
| 1934 | script_list = Fcons (Fcons (script_tag, langsys_list), |
| 1935 | script_list); |
| 1936 | } |
| 1937 | |
| 1938 | if (i == 0) |
| 1939 | XSETCAR (capability, script_list); |
| 1940 | else |
| 1941 | XSETCDR (capability, script_list); |
| 1942 | } |
| 1943 | |
| 1944 | return capability; |
| 1945 | } |
| 1946 | |
| 1947 | /* Parse OTF features in SPEC and write a proper features spec string |
| 1948 | in FEATURES for the call of OTF_drive_gsub/gpos (of libotf). It is |
| 1949 | assured that the sufficient memory has already allocated for |
| 1950 | FEATURES. */ |
| 1951 | |
| 1952 | static void |
| 1953 | generate_otf_features (spec, features) |
| 1954 | Lisp_Object spec; |
| 1955 | char *features; |
| 1956 | { |
| 1957 | Lisp_Object val; |
| 1958 | char *p; |
| 1959 | int asterisk; |
| 1960 | |
| 1961 | p = features; |
| 1962 | *p = '\0'; |
| 1963 | for (asterisk = 0; CONSP (spec); spec = XCDR (spec)) |
| 1964 | { |
| 1965 | val = XCAR (spec); |
| 1966 | CHECK_SYMBOL (val); |
| 1967 | if (p > features) |
| 1968 | *p++ = ','; |
| 1969 | if (SREF (SYMBOL_NAME (val), 0) == '*') |
| 1970 | { |
| 1971 | asterisk = 1; |
| 1972 | *p++ = '*'; |
| 1973 | } |
| 1974 | else if (! asterisk) |
| 1975 | { |
| 1976 | val = SYMBOL_NAME (val); |
| 1977 | p += sprintf (p, "%s", SDATA (val)); |
| 1978 | } |
| 1979 | else |
| 1980 | { |
| 1981 | val = SYMBOL_NAME (val); |
| 1982 | p += sprintf (p, "~%s", SDATA (val)); |
| 1983 | } |
| 1984 | } |
| 1985 | if (CONSP (spec)) |
| 1986 | error ("OTF spec too long"); |
| 1987 | } |
| 1988 | |
| 1989 | Lisp_Object |
| 1990 | font_otf_DeviceTable (device_table) |
| 1991 | OTF_DeviceTable *device_table; |
| 1992 | { |
| 1993 | int len = device_table->StartSize - device_table->EndSize + 1; |
| 1994 | |
| 1995 | return Fcons (make_number (len), |
| 1996 | make_unibyte_string (device_table->DeltaValue, len)); |
| 1997 | } |
| 1998 | |
| 1999 | Lisp_Object |
| 2000 | font_otf_ValueRecord (value_format, value_record) |
| 2001 | int value_format; |
| 2002 | OTF_ValueRecord *value_record; |
| 2003 | { |
| 2004 | Lisp_Object val = Fmake_vector (make_number (8), Qnil); |
| 2005 | |
| 2006 | if (value_format & OTF_XPlacement) |
| 2007 | ASET (val, 0, make_number (value_record->XPlacement)); |
| 2008 | if (value_format & OTF_YPlacement) |
| 2009 | ASET (val, 1, make_number (value_record->YPlacement)); |
| 2010 | if (value_format & OTF_XAdvance) |
| 2011 | ASET (val, 2, make_number (value_record->XAdvance)); |
| 2012 | if (value_format & OTF_YAdvance) |
| 2013 | ASET (val, 3, make_number (value_record->YAdvance)); |
| 2014 | if (value_format & OTF_XPlaDevice) |
| 2015 | ASET (val, 4, font_otf_DeviceTable (&value_record->XPlaDevice)); |
| 2016 | if (value_format & OTF_YPlaDevice) |
| 2017 | ASET (val, 4, font_otf_DeviceTable (&value_record->YPlaDevice)); |
| 2018 | if (value_format & OTF_XAdvDevice) |
| 2019 | ASET (val, 4, font_otf_DeviceTable (&value_record->XAdvDevice)); |
| 2020 | if (value_format & OTF_YAdvDevice) |
| 2021 | ASET (val, 4, font_otf_DeviceTable (&value_record->YAdvDevice)); |
| 2022 | return val; |
| 2023 | } |
| 2024 | |
| 2025 | Lisp_Object |
| 2026 | font_otf_Anchor (anchor) |
| 2027 | OTF_Anchor *anchor; |
| 2028 | { |
| 2029 | Lisp_Object val; |
| 2030 | |
| 2031 | val = Fmake_vector (make_number (anchor->AnchorFormat + 1), Qnil); |
| 2032 | ASET (val, 0, make_number (anchor->XCoordinate)); |
| 2033 | ASET (val, 1, make_number (anchor->YCoordinate)); |
| 2034 | if (anchor->AnchorFormat == 2) |
| 2035 | ASET (val, 2, make_number (anchor->f.f1.AnchorPoint)); |
| 2036 | else |
| 2037 | { |
| 2038 | ASET (val, 3, font_otf_DeviceTable (&anchor->f.f2.XDeviceTable)); |
| 2039 | ASET (val, 4, font_otf_DeviceTable (&anchor->f.f2.YDeviceTable)); |
| 2040 | } |
| 2041 | return val; |
| 2042 | } |
| 2043 | #endif /* HAVE_LIBOTF */ |
| 2044 | #endif /* 0 */ |
| 2045 | |
| 2046 | /* G-string (glyph string) handler */ |
| 2047 | |
| 2048 | /* G-string is a vector of the form [HEADER GLYPH ...]. |
| 2049 | See the docstring of `font-make-gstring' for more detail. */ |
| 2050 | |
| 2051 | struct font * |
| 2052 | font_prepare_composition (cmp, f) |
| 2053 | struct composition *cmp; |
| 2054 | FRAME_PTR f; |
| 2055 | { |
| 2056 | Lisp_Object gstring |
| 2057 | = AREF (XHASH_TABLE (composition_hash_table)->key_and_value, |
| 2058 | cmp->hash_index * 2); |
| 2059 | |
| 2060 | cmp->font = XFONT_OBJECT (LGSTRING_FONT (gstring)); |
| 2061 | cmp->glyph_len = LGSTRING_LENGTH (gstring); |
| 2062 | cmp->pixel_width = LGSTRING_WIDTH (gstring); |
| 2063 | cmp->lbearing = LGSTRING_LBEARING (gstring); |
| 2064 | cmp->rbearing = LGSTRING_RBEARING (gstring); |
| 2065 | cmp->ascent = LGSTRING_ASCENT (gstring); |
| 2066 | cmp->descent = LGSTRING_DESCENT (gstring); |
| 2067 | cmp->width = cmp->pixel_width / FRAME_COLUMN_WIDTH (f); |
| 2068 | if (cmp->width == 0) |
| 2069 | cmp->width = 1; |
| 2070 | |
| 2071 | return cmp->font; |
| 2072 | } |
| 2073 | |
| 2074 | \f |
| 2075 | /* Font sorting */ |
| 2076 | |
| 2077 | static unsigned font_score P_ ((Lisp_Object, Lisp_Object *)); |
| 2078 | static int font_compare P_ ((const void *, const void *)); |
| 2079 | static Lisp_Object font_sort_entites P_ ((Lisp_Object, Lisp_Object, |
| 2080 | Lisp_Object, Lisp_Object, |
| 2081 | int)); |
| 2082 | |
| 2083 | /* We sort fonts by scoring each of them against a specified |
| 2084 | font-spec. The score value is 32 bit (`unsigned'), and the smaller |
| 2085 | the value is, the closer the font is to the font-spec. |
| 2086 | |
| 2087 | The lowest 2 bits of the score is used for driver type. The font |
| 2088 | available by the most preferred font driver is 0. |
| 2089 | |
| 2090 | Each 7-bit in the higher 28 bits are used for numeric properties |
| 2091 | WEIGHT, SLANT, WIDTH, and SIZE. */ |
| 2092 | |
| 2093 | /* How many bits to shift to store the difference value of each font |
| 2094 | property in a score. Note that flots for FONT_TYPE_INDEX and |
| 2095 | FONT_REGISTRY_INDEX are not used. */ |
| 2096 | static int sort_shift_bits[FONT_SIZE_INDEX + 1]; |
| 2097 | |
| 2098 | /* Score font-entity ENTITY against properties of font-spec SPEC_PROP. |
| 2099 | The return value indicates how different ENTITY is compared with |
| 2100 | SPEC_PROP. |
| 2101 | |
| 2102 | ALTERNATE_FAMILIES, if non-nil, is a pre-calculated list of |
| 2103 | alternate family names for AREF (SPEC_PROP, FONT_FAMILY_INDEX). */ |
| 2104 | |
| 2105 | static unsigned |
| 2106 | font_score (entity, spec_prop) |
| 2107 | Lisp_Object entity, *spec_prop; |
| 2108 | { |
| 2109 | unsigned score = 0; |
| 2110 | int i; |
| 2111 | |
| 2112 | /* Score three style numeric fields. Maximum difference is 127. */ |
| 2113 | for (i = FONT_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; i++) |
| 2114 | if (! NILP (spec_prop[i]) && ! EQ (AREF (entity, i), spec_prop[i])) |
| 2115 | { |
| 2116 | int diff = (XINT (AREF (entity, i)) >> 8) - (XINT (spec_prop[i]) >> 8); |
| 2117 | |
| 2118 | if (diff < 0) |
| 2119 | diff = - diff; |
| 2120 | if (diff > 0) |
| 2121 | score |= min (diff, 127) << sort_shift_bits[i]; |
| 2122 | } |
| 2123 | |
| 2124 | /* Score the size. Maximum difference is 127. */ |
| 2125 | i = FONT_SIZE_INDEX; |
| 2126 | if (! NILP (spec_prop[i]) && ! EQ (AREF (entity, i), spec_prop[i]) |
| 2127 | && XINT (AREF (entity, i)) > 0) |
| 2128 | { |
| 2129 | /* We use the higher 6-bit for the actual size difference. The |
| 2130 | lowest bit is set if the DPI is different. */ |
| 2131 | int diff = XINT (spec_prop[i]) - XINT (AREF (entity, i)); |
| 2132 | |
| 2133 | if (diff < 0) |
| 2134 | diff = - diff; |
| 2135 | diff <<= 1; |
| 2136 | if (! NILP (spec_prop[FONT_DPI_INDEX]) |
| 2137 | && ! EQ (spec_prop[FONT_DPI_INDEX], AREF (entity, FONT_DPI_INDEX))) |
| 2138 | diff |= 1; |
| 2139 | score |= min (diff, 127) << sort_shift_bits[FONT_SIZE_INDEX]; |
| 2140 | } |
| 2141 | |
| 2142 | return score; |
| 2143 | } |
| 2144 | |
| 2145 | |
| 2146 | /* The comparison function for qsort. */ |
| 2147 | |
| 2148 | static int |
| 2149 | font_compare (d1, d2) |
| 2150 | const void *d1, *d2; |
| 2151 | { |
| 2152 | return (*(unsigned *) d1 - *(unsigned *) d2); |
| 2153 | } |
| 2154 | |
| 2155 | |
| 2156 | /* The structure for elements being sorted by qsort. */ |
| 2157 | struct font_sort_data |
| 2158 | { |
| 2159 | unsigned score; |
| 2160 | Lisp_Object entity; |
| 2161 | }; |
| 2162 | |
| 2163 | |
| 2164 | /* Sort font-entities in vector VEC by closeness to font-spec PREFER. |
| 2165 | If PREFER specifies a point-size, calculate the corresponding |
| 2166 | pixel-size from QCdpi property of PREFER or from the Y-resolution |
| 2167 | of FRAME before sorting. If SPEC is not nil, it is a font-spec to |
| 2168 | get the font-entities in VEC. |
| 2169 | |
| 2170 | If BEST-ONLY is nonzero, return the best matching entity. Otherwise, |
| 2171 | return the sorted VEC. */ |
| 2172 | |
| 2173 | static Lisp_Object |
| 2174 | font_sort_entites (vec, prefer, frame, spec, best_only) |
| 2175 | Lisp_Object vec, prefer, frame, spec; |
| 2176 | int best_only; |
| 2177 | { |
| 2178 | Lisp_Object prefer_prop[FONT_SPEC_MAX]; |
| 2179 | int len, i; |
| 2180 | struct font_sort_data *data; |
| 2181 | unsigned best_score; |
| 2182 | Lisp_Object best_entity, driver_type; |
| 2183 | int driver_order; |
| 2184 | struct frame *f = XFRAME (frame); |
| 2185 | struct font_driver_list *list; |
| 2186 | USE_SAFE_ALLOCA; |
| 2187 | |
| 2188 | len = ASIZE (vec); |
| 2189 | if (len <= 1) |
| 2190 | return best_only ? AREF (vec, 0) : vec; |
| 2191 | |
| 2192 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 2193 | prefer_prop[i] = AREF (prefer, i); |
| 2194 | |
| 2195 | if (! NILP (spec)) |
| 2196 | { |
| 2197 | /* A font driver may return a font that has a property value |
| 2198 | different from the value specified in SPEC if the driver |
| 2199 | thinks they are the same. That happens, for instance, such a |
| 2200 | generic family name as "serif" is specified. So, to ignore |
| 2201 | such a difference, for all properties specified in SPEC, set |
| 2202 | the corresponding properties in PREFER_PROP to nil. */ |
| 2203 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 2204 | if (! NILP (AREF (spec, i))) |
| 2205 | prefer_prop[i] = Qnil; |
| 2206 | } |
| 2207 | |
| 2208 | if (FLOATP (prefer_prop[FONT_SIZE_INDEX])) |
| 2209 | prefer_prop[FONT_SIZE_INDEX] |
| 2210 | = make_number (font_pixel_size (XFRAME (frame), prefer)); |
| 2211 | |
| 2212 | /* Scoring and sorting. */ |
| 2213 | SAFE_ALLOCA (data, struct font_sort_data *, (sizeof *data) * len); |
| 2214 | best_score = 0xFFFFFFFF; |
| 2215 | /* We are sure that the length of VEC > 1. */ |
| 2216 | driver_type = AREF (AREF (vec, 0), FONT_TYPE_INDEX); |
| 2217 | for (driver_order = 0, list = f->font_driver_list; list; |
| 2218 | driver_order++, list = list->next) |
| 2219 | if (EQ (driver_type, list->driver->type)) |
| 2220 | break; |
| 2221 | best_entity = data[0].entity = AREF (vec, 0); |
| 2222 | best_score = data[0].score |
| 2223 | = font_score (data[0].entity, prefer_prop) | driver_order; |
| 2224 | for (i = 0; i < len; i++) |
| 2225 | { |
| 2226 | if (!EQ (driver_type, AREF (AREF (vec, i), FONT_TYPE_INDEX))) |
| 2227 | for (driver_order = 0, list = f->font_driver_list; list; |
| 2228 | driver_order++, list = list->next) |
| 2229 | if (EQ (driver_type, list->driver->type)) |
| 2230 | break; |
| 2231 | data[i].entity = AREF (vec, i); |
| 2232 | data[i].score = font_score (data[i].entity, prefer_prop) | driver_order; |
| 2233 | if (best_only && best_score > data[i].score) |
| 2234 | { |
| 2235 | best_score = data[i].score; |
| 2236 | best_entity = data[i].entity; |
| 2237 | if (best_score == 0) |
| 2238 | break; |
| 2239 | } |
| 2240 | } |
| 2241 | if (NILP (best_entity)) |
| 2242 | { |
| 2243 | qsort (data, len, sizeof *data, font_compare); |
| 2244 | for (i = 0; i < len; i++) |
| 2245 | ASET (vec, i, data[i].entity); |
| 2246 | } |
| 2247 | else |
| 2248 | vec = best_entity; |
| 2249 | SAFE_FREE (); |
| 2250 | |
| 2251 | font_add_log ("sort-by", prefer, vec); |
| 2252 | return vec; |
| 2253 | } |
| 2254 | |
| 2255 | \f |
| 2256 | /* API of Font Service Layer. */ |
| 2257 | |
| 2258 | /* Reflect ORDER (see the variable font_sort_order in xfaces.c) to |
| 2259 | sort_shift_bits. Finternal_set_font_selection_order calls this |
| 2260 | function with font_sort_order after setting up it. */ |
| 2261 | |
| 2262 | void |
| 2263 | font_update_sort_order (order) |
| 2264 | int *order; |
| 2265 | { |
| 2266 | int i, shift_bits; |
| 2267 | |
| 2268 | for (i = 0, shift_bits = 23; i < 4; i++, shift_bits -= 7) |
| 2269 | { |
| 2270 | int xlfd_idx = order[i]; |
| 2271 | |
| 2272 | if (xlfd_idx == XLFD_WEIGHT_INDEX) |
| 2273 | sort_shift_bits[FONT_WEIGHT_INDEX] = shift_bits; |
| 2274 | else if (xlfd_idx == XLFD_SLANT_INDEX) |
| 2275 | sort_shift_bits[FONT_SLANT_INDEX] = shift_bits; |
| 2276 | else if (xlfd_idx == XLFD_SWIDTH_INDEX) |
| 2277 | sort_shift_bits[FONT_WIDTH_INDEX] = shift_bits; |
| 2278 | else |
| 2279 | sort_shift_bits[FONT_SIZE_INDEX] = shift_bits; |
| 2280 | } |
| 2281 | } |
| 2282 | |
| 2283 | |
| 2284 | /* Check if ENTITY matches with the font specification SPEC. */ |
| 2285 | |
| 2286 | int |
| 2287 | font_match_p (spec, entity) |
| 2288 | Lisp_Object spec, entity; |
| 2289 | { |
| 2290 | Lisp_Object prefer_prop[FONT_SPEC_MAX]; |
| 2291 | Lisp_Object alternate_families = Qnil; |
| 2292 | int i; |
| 2293 | |
| 2294 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_SIZE_INDEX; i++) |
| 2295 | prefer_prop[i] = AREF (spec, i); |
| 2296 | if (FLOATP (prefer_prop[FONT_SIZE_INDEX])) |
| 2297 | prefer_prop[FONT_SIZE_INDEX] |
| 2298 | = make_number (font_pixel_size (XFRAME (selected_frame), spec)); |
| 2299 | if (! NILP (prefer_prop[FONT_FAMILY_INDEX])) |
| 2300 | { |
| 2301 | alternate_families |
| 2302 | = Fassoc_string (prefer_prop[FONT_FAMILY_INDEX], |
| 2303 | Vface_alternative_font_family_alist, Qt); |
| 2304 | if (CONSP (alternate_families)) |
| 2305 | alternate_families = XCDR (alternate_families); |
| 2306 | } |
| 2307 | |
| 2308 | return (font_score (entity, prefer_prop) == 0); |
| 2309 | } |
| 2310 | |
| 2311 | |
| 2312 | /* CHeck a lispy font object corresponding to FONT. */ |
| 2313 | |
| 2314 | int |
| 2315 | font_check_object (font) |
| 2316 | struct font *font; |
| 2317 | { |
| 2318 | Lisp_Object tail, elt; |
| 2319 | |
| 2320 | for (tail = font->props[FONT_OBJLIST_INDEX]; CONSP (tail); |
| 2321 | tail = XCDR (tail)) |
| 2322 | { |
| 2323 | elt = XCAR (tail); |
| 2324 | if (font == XFONT_OBJECT (elt)) |
| 2325 | return 1; |
| 2326 | } |
| 2327 | return 0; |
| 2328 | } |
| 2329 | |
| 2330 | \f |
| 2331 | |
| 2332 | /* Font cache |
| 2333 | |
| 2334 | Each font backend has the callback function get_cache, and it |
| 2335 | returns a cons cell of which cdr part can be freely used for |
| 2336 | caching fonts. The cons cell may be shared by multiple frames |
| 2337 | and/or multiple font drivers. So, we arrange the cdr part as this: |
| 2338 | |
| 2339 | ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) |
| 2340 | |
| 2341 | where DRIVER-TYPE is a symbol such as `x', `xft', etc., NUM-FRAMES |
| 2342 | is a number frames sharing this cache, and FONT-CACHE-DATA is a |
| 2343 | cons (FONT-SPEC FONT-ENTITY ...). */ |
| 2344 | |
| 2345 | static void font_prepare_cache P_ ((FRAME_PTR, struct font_driver *)); |
| 2346 | static void font_finish_cache P_ ((FRAME_PTR, struct font_driver *)); |
| 2347 | static Lisp_Object font_get_cache P_ ((FRAME_PTR, struct font_driver *)); |
| 2348 | static void font_clear_cache P_ ((FRAME_PTR, Lisp_Object, |
| 2349 | struct font_driver *)); |
| 2350 | |
| 2351 | static void |
| 2352 | font_prepare_cache (f, driver) |
| 2353 | FRAME_PTR f; |
| 2354 | struct font_driver *driver; |
| 2355 | { |
| 2356 | Lisp_Object cache, val; |
| 2357 | |
| 2358 | cache = driver->get_cache (f); |
| 2359 | val = XCDR (cache); |
| 2360 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2361 | val = XCDR (val); |
| 2362 | if (NILP (val)) |
| 2363 | { |
| 2364 | val = Fcons (driver->type, Fcons (make_number (1), Qnil)); |
| 2365 | XSETCDR (cache, Fcons (val, XCDR (cache))); |
| 2366 | } |
| 2367 | else |
| 2368 | { |
| 2369 | val = XCDR (XCAR (val)); |
| 2370 | XSETCAR (val, make_number (XINT (XCAR (val)) + 1)); |
| 2371 | } |
| 2372 | } |
| 2373 | |
| 2374 | |
| 2375 | static void |
| 2376 | font_finish_cache (f, driver) |
| 2377 | FRAME_PTR f; |
| 2378 | struct font_driver *driver; |
| 2379 | { |
| 2380 | Lisp_Object cache, val, tmp; |
| 2381 | |
| 2382 | |
| 2383 | cache = driver->get_cache (f); |
| 2384 | val = XCDR (cache); |
| 2385 | while (CONSP (val) && ! EQ (XCAR (XCAR (val)), driver->type)) |
| 2386 | cache = val, val = XCDR (val); |
| 2387 | font_assert (! NILP (val)); |
| 2388 | tmp = XCDR (XCAR (val)); |
| 2389 | XSETCAR (tmp, make_number (XINT (XCAR (tmp)) - 1)); |
| 2390 | if (XINT (XCAR (tmp)) == 0) |
| 2391 | { |
| 2392 | font_clear_cache (f, XCAR (val), driver); |
| 2393 | XSETCDR (cache, XCDR (val)); |
| 2394 | } |
| 2395 | } |
| 2396 | |
| 2397 | |
| 2398 | static Lisp_Object |
| 2399 | font_get_cache (f, driver) |
| 2400 | FRAME_PTR f; |
| 2401 | struct font_driver *driver; |
| 2402 | { |
| 2403 | Lisp_Object val = driver->get_cache (f); |
| 2404 | Lisp_Object type = driver->type; |
| 2405 | |
| 2406 | font_assert (CONSP (val)); |
| 2407 | for (val = XCDR (val); ! EQ (XCAR (XCAR (val)), type); val = XCDR (val)); |
| 2408 | font_assert (CONSP (val)); |
| 2409 | /* VAL = ((DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) ...) */ |
| 2410 | val = XCDR (XCAR (val)); |
| 2411 | return val; |
| 2412 | } |
| 2413 | |
| 2414 | static int num_fonts; |
| 2415 | |
| 2416 | static void |
| 2417 | font_clear_cache (f, cache, driver) |
| 2418 | FRAME_PTR f; |
| 2419 | Lisp_Object cache; |
| 2420 | struct font_driver *driver; |
| 2421 | { |
| 2422 | Lisp_Object tail, elt; |
| 2423 | |
| 2424 | /* CACHE = (DRIVER-TYPE NUM-FRAMES FONT-CACHE-DATA ...) */ |
| 2425 | for (tail = XCDR (XCDR (cache)); CONSP (tail); tail = XCDR (tail)) |
| 2426 | { |
| 2427 | elt = XCAR (tail); |
| 2428 | if (CONSP (elt) && FONT_SPEC_P (XCAR (elt)) && VECTORP (XCDR (elt))) |
| 2429 | { |
| 2430 | Lisp_Object vec = XCDR (elt); |
| 2431 | int i; |
| 2432 | |
| 2433 | for (i = 0; i < ASIZE (vec); i++) |
| 2434 | { |
| 2435 | Lisp_Object entity = AREF (vec, i); |
| 2436 | |
| 2437 | if (EQ (driver->type, AREF (entity, FONT_TYPE_INDEX))) |
| 2438 | { |
| 2439 | Lisp_Object objlist = AREF (entity, FONT_OBJLIST_INDEX); |
| 2440 | |
| 2441 | for (; CONSP (objlist); objlist = XCDR (objlist)) |
| 2442 | { |
| 2443 | Lisp_Object val = XCAR (objlist); |
| 2444 | struct font *font = XFONT_OBJECT (val); |
| 2445 | |
| 2446 | font_assert (font && driver == font->driver); |
| 2447 | driver->close (f, font); |
| 2448 | num_fonts--; |
| 2449 | } |
| 2450 | if (driver->free_entity) |
| 2451 | driver->free_entity (entity); |
| 2452 | } |
| 2453 | } |
| 2454 | } |
| 2455 | } |
| 2456 | XSETCDR (cache, Qnil); |
| 2457 | } |
| 2458 | \f |
| 2459 | |
| 2460 | static Lisp_Object scratch_font_spec, scratch_font_prefer; |
| 2461 | |
| 2462 | Lisp_Object |
| 2463 | font_delete_unmatched (list, spec, size) |
| 2464 | Lisp_Object list, spec; |
| 2465 | int size; |
| 2466 | { |
| 2467 | Lisp_Object entity, val; |
| 2468 | enum font_property_index prop; |
| 2469 | |
| 2470 | for (val = Qnil; CONSP (list); list = XCDR (list)) |
| 2471 | { |
| 2472 | entity = XCAR (list); |
| 2473 | for (prop = FONT_WEIGHT_INDEX; prop < FONT_SIZE_INDEX; prop++) |
| 2474 | if (INTEGERP (AREF (spec, prop)) |
| 2475 | && ((XINT (AREF (spec, prop)) >> 8) |
| 2476 | != (XINT (AREF (entity, prop)) >> 8))) |
| 2477 | prop = FONT_SPEC_MAX; |
| 2478 | if (prop++ <= FONT_SIZE_INDEX |
| 2479 | && size |
| 2480 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 2481 | { |
| 2482 | int diff = XINT (AREF (entity, FONT_SIZE_INDEX)) - size; |
| 2483 | |
| 2484 | if (diff != 0 |
| 2485 | && (diff < 0 ? -diff > FONT_PIXEL_SIZE_QUANTUM |
| 2486 | : diff > FONT_PIXEL_SIZE_QUANTUM)) |
| 2487 | prop = FONT_SPEC_MAX; |
| 2488 | } |
| 2489 | if (prop < FONT_SPEC_MAX) |
| 2490 | val = Fcons (entity, val); |
| 2491 | } |
| 2492 | return val; |
| 2493 | } |
| 2494 | |
| 2495 | |
| 2496 | /* Return a vector of font-entities matching with SPEC on FRAME. */ |
| 2497 | |
| 2498 | Lisp_Object |
| 2499 | font_list_entities (frame, spec) |
| 2500 | Lisp_Object frame, spec; |
| 2501 | { |
| 2502 | FRAME_PTR f = XFRAME (frame); |
| 2503 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2504 | Lisp_Object ftype, val; |
| 2505 | Lisp_Object *vec; |
| 2506 | int size; |
| 2507 | int need_filtering = 0; |
| 2508 | int i; |
| 2509 | |
| 2510 | font_assert (FONT_SPEC_P (spec)); |
| 2511 | |
| 2512 | if (INTEGERP (AREF (spec, FONT_SIZE_INDEX))) |
| 2513 | size = XINT (AREF (spec, FONT_SIZE_INDEX)); |
| 2514 | else if (FLOATP (AREF (spec, FONT_SIZE_INDEX))) |
| 2515 | size = font_pixel_size (f, spec); |
| 2516 | else |
| 2517 | size = 0; |
| 2518 | |
| 2519 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2520 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
| 2521 | ASET (scratch_font_spec, i, AREF (spec, i)); |
| 2522 | for (i = FONT_WEIGHT_INDEX; i < FONT_EXTRA_INDEX; i++) |
| 2523 | { |
| 2524 | ASET (scratch_font_spec, i, Qnil); |
| 2525 | if (! NILP (AREF (spec, i))) |
| 2526 | need_filtering = 1; |
| 2527 | if (i == FONT_DPI_INDEX) |
| 2528 | /* Skip FONT_SPACING_INDEX */ |
| 2529 | i++; |
| 2530 | } |
| 2531 | ASET (scratch_font_spec, FONT_SPACING_INDEX, AREF (spec, FONT_SPACING_INDEX)); |
| 2532 | ASET (scratch_font_spec, FONT_EXTRA_INDEX, AREF (spec, FONT_EXTRA_INDEX)); |
| 2533 | |
| 2534 | vec = alloca (sizeof (Lisp_Object) * num_font_drivers); |
| 2535 | if (! vec) |
| 2536 | return null_vector; |
| 2537 | |
| 2538 | for (i = 0; driver_list; driver_list = driver_list->next) |
| 2539 | if (driver_list->on |
| 2540 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2541 | { |
| 2542 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2543 | |
| 2544 | ASET (scratch_font_spec, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2545 | val = assoc_no_quit (scratch_font_spec, XCDR (cache)); |
| 2546 | if (CONSP (val)) |
| 2547 | val = XCDR (val); |
| 2548 | else |
| 2549 | { |
| 2550 | Lisp_Object copy; |
| 2551 | |
| 2552 | val = driver_list->driver->list (frame, scratch_font_spec); |
| 2553 | copy = Fcopy_font_spec (scratch_font_spec); |
| 2554 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2555 | XSETCDR (cache, Fcons (Fcons (copy, val), XCDR (cache))); |
| 2556 | } |
| 2557 | if (! NILP (val) && need_filtering) |
| 2558 | val = font_delete_unmatched (val, spec, size); |
| 2559 | if (! NILP (val)) |
| 2560 | vec[i++] = val; |
| 2561 | } |
| 2562 | |
| 2563 | val = (i > 0 ? Fvconcat (i, vec) : null_vector); |
| 2564 | font_add_log ("list", spec, val); |
| 2565 | return (val); |
| 2566 | } |
| 2567 | |
| 2568 | |
| 2569 | /* Return a font entity matching with SPEC on FRAME. ATTRS, if non |
| 2570 | nil, is an array of face's attributes, which specifies preferred |
| 2571 | font-related attributes. */ |
| 2572 | |
| 2573 | static Lisp_Object |
| 2574 | font_matching_entity (f, attrs, spec) |
| 2575 | FRAME_PTR f; |
| 2576 | Lisp_Object *attrs, spec; |
| 2577 | { |
| 2578 | struct font_driver_list *driver_list = f->font_driver_list; |
| 2579 | Lisp_Object ftype, size, entity; |
| 2580 | Lisp_Object frame; |
| 2581 | |
| 2582 | XSETFRAME (frame, f); |
| 2583 | ftype = AREF (spec, FONT_TYPE_INDEX); |
| 2584 | size = AREF (spec, FONT_SIZE_INDEX); |
| 2585 | if (FLOATP (size)) |
| 2586 | ASET (spec, FONT_SIZE_INDEX, make_number (font_pixel_size (f, spec))); |
| 2587 | entity = Qnil; |
| 2588 | for (; driver_list; driver_list = driver_list->next) |
| 2589 | if (driver_list->on |
| 2590 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) |
| 2591 | { |
| 2592 | Lisp_Object cache = font_get_cache (f, driver_list->driver); |
| 2593 | Lisp_Object copy; |
| 2594 | |
| 2595 | ASET (spec, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2596 | entity = assoc_no_quit (spec, XCDR (cache)); |
| 2597 | if (CONSP (entity)) |
| 2598 | entity = XCDR (entity); |
| 2599 | else |
| 2600 | { |
| 2601 | entity = driver_list->driver->match (frame, spec); |
| 2602 | copy = Fcopy_font_spec (spec); |
| 2603 | ASET (copy, FONT_TYPE_INDEX, driver_list->driver->type); |
| 2604 | XSETCDR (cache, Fcons (Fcons (copy, entity), XCDR (cache))); |
| 2605 | } |
| 2606 | if (! NILP (entity)) |
| 2607 | break; |
| 2608 | } |
| 2609 | ASET (spec, FONT_TYPE_INDEX, ftype); |
| 2610 | ASET (spec, FONT_SIZE_INDEX, size); |
| 2611 | font_add_log ("match", spec, entity); |
| 2612 | return entity; |
| 2613 | } |
| 2614 | |
| 2615 | |
| 2616 | /* Open a font of ENTITY and PIXEL_SIZE on frame F, and return the |
| 2617 | opened font object. */ |
| 2618 | |
| 2619 | static Lisp_Object |
| 2620 | font_open_entity (f, entity, pixel_size) |
| 2621 | FRAME_PTR f; |
| 2622 | Lisp_Object entity; |
| 2623 | int pixel_size; |
| 2624 | { |
| 2625 | struct font_driver_list *driver_list; |
| 2626 | Lisp_Object objlist, size, val, font_object; |
| 2627 | struct font *font; |
| 2628 | int min_width; |
| 2629 | |
| 2630 | font_assert (FONT_ENTITY_P (entity)); |
| 2631 | size = AREF (entity, FONT_SIZE_INDEX); |
| 2632 | if (XINT (size) != 0) |
| 2633 | pixel_size = XINT (size); |
| 2634 | |
| 2635 | for (objlist = AREF (entity, FONT_OBJLIST_INDEX); CONSP (objlist); |
| 2636 | objlist = XCDR (objlist)) |
| 2637 | if (XFONT_OBJECT (XCAR (objlist))->pixel_size == pixel_size) |
| 2638 | return XCAR (objlist); |
| 2639 | |
| 2640 | val = AREF (entity, FONT_TYPE_INDEX); |
| 2641 | for (driver_list = f->font_driver_list; |
| 2642 | driver_list && ! EQ (driver_list->driver->type, val); |
| 2643 | driver_list = driver_list->next); |
| 2644 | if (! driver_list) |
| 2645 | return Qnil; |
| 2646 | |
| 2647 | font_object = driver_list->driver->open (f, entity, pixel_size); |
| 2648 | font_add_log ("open", entity, font_object); |
| 2649 | if (NILP (font_object)) |
| 2650 | return Qnil; |
| 2651 | ASET (entity, FONT_OBJLIST_INDEX, |
| 2652 | Fcons (font_object, AREF (entity, FONT_OBJLIST_INDEX))); |
| 2653 | ASET (font_object, FONT_OBJLIST_INDEX, AREF (entity, FONT_OBJLIST_INDEX)); |
| 2654 | num_fonts++; |
| 2655 | |
| 2656 | font = XFONT_OBJECT (font_object); |
| 2657 | min_width = (font->min_width ? font->min_width |
| 2658 | : font->average_width ? font->average_width |
| 2659 | : font->space_width ? font->space_width |
| 2660 | : 1); |
| 2661 | #ifdef HAVE_WINDOW_SYSTEM |
| 2662 | FRAME_X_DISPLAY_INFO (f)->n_fonts++; |
| 2663 | if (FRAME_X_DISPLAY_INFO (f)->n_fonts == 1) |
| 2664 | { |
| 2665 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width; |
| 2666 | FRAME_SMALLEST_FONT_HEIGHT (f) = font->height; |
| 2667 | fonts_changed_p = 1; |
| 2668 | } |
| 2669 | else |
| 2670 | { |
| 2671 | if (FRAME_SMALLEST_CHAR_WIDTH (f) > min_width) |
| 2672 | FRAME_SMALLEST_CHAR_WIDTH (f) = min_width, fonts_changed_p = 1; |
| 2673 | if (FRAME_SMALLEST_FONT_HEIGHT (f) > font->height) |
| 2674 | FRAME_SMALLEST_FONT_HEIGHT (f) = font->height, fonts_changed_p = 1; |
| 2675 | } |
| 2676 | #endif |
| 2677 | |
| 2678 | return font_object; |
| 2679 | } |
| 2680 | |
| 2681 | |
| 2682 | /* Close FONT_OBJECT that is opened on frame F. */ |
| 2683 | |
| 2684 | void |
| 2685 | font_close_object (f, font_object) |
| 2686 | FRAME_PTR f; |
| 2687 | Lisp_Object font_object; |
| 2688 | { |
| 2689 | struct font *font = XFONT_OBJECT (font_object); |
| 2690 | Lisp_Object objlist; |
| 2691 | Lisp_Object tail, prev = Qnil; |
| 2692 | |
| 2693 | objlist = AREF (font_object, FONT_OBJLIST_INDEX); |
| 2694 | for (prev = Qnil, tail = objlist; CONSP (tail); |
| 2695 | prev = tail, tail = XCDR (tail)) |
| 2696 | if (EQ (font_object, XCAR (tail))) |
| 2697 | { |
| 2698 | font_add_log ("close", font_object, Qnil); |
| 2699 | font->driver->close (f, font); |
| 2700 | #ifdef HAVE_WINDOW_SYSTEM |
| 2701 | font_assert (FRAME_X_DISPLAY_INFO (f)->n_fonts); |
| 2702 | FRAME_X_DISPLAY_INFO (f)->n_fonts--; |
| 2703 | #endif |
| 2704 | if (NILP (prev)) |
| 2705 | ASET (font_object, FONT_OBJLIST_INDEX, XCDR (objlist)); |
| 2706 | else |
| 2707 | XSETCDR (prev, XCDR (objlist)); |
| 2708 | num_fonts--; |
| 2709 | return; |
| 2710 | } |
| 2711 | abort (); |
| 2712 | } |
| 2713 | |
| 2714 | |
| 2715 | /* Return 1 if FONT on F has a glyph for character C, 0 if not, -1 if |
| 2716 | FONT is a font-entity and it must be opened to check. */ |
| 2717 | |
| 2718 | int |
| 2719 | font_has_char (f, font, c) |
| 2720 | FRAME_PTR f; |
| 2721 | Lisp_Object font; |
| 2722 | int c; |
| 2723 | { |
| 2724 | struct font *fontp; |
| 2725 | |
| 2726 | if (FONT_ENTITY_P (font)) |
| 2727 | { |
| 2728 | Lisp_Object type = AREF (font, FONT_TYPE_INDEX); |
| 2729 | struct font_driver_list *driver_list; |
| 2730 | |
| 2731 | for (driver_list = f->font_driver_list; |
| 2732 | driver_list && ! EQ (driver_list->driver->type, type); |
| 2733 | driver_list = driver_list->next); |
| 2734 | if (! driver_list) |
| 2735 | return 0; |
| 2736 | if (! driver_list->driver->has_char) |
| 2737 | return -1; |
| 2738 | return driver_list->driver->has_char (font, c); |
| 2739 | } |
| 2740 | |
| 2741 | font_assert (FONT_OBJECT_P (font)); |
| 2742 | fontp = XFONT_OBJECT (font); |
| 2743 | if (fontp->driver->has_char) |
| 2744 | { |
| 2745 | int result = fontp->driver->has_char (font, c); |
| 2746 | |
| 2747 | if (result >= 0) |
| 2748 | return result; |
| 2749 | } |
| 2750 | return (fontp->driver->encode_char (fontp, c) != FONT_INVALID_CODE); |
| 2751 | } |
| 2752 | |
| 2753 | |
| 2754 | /* Return the glyph ID of FONT_OBJECT for character C. */ |
| 2755 | |
| 2756 | unsigned |
| 2757 | font_encode_char (font_object, c) |
| 2758 | Lisp_Object font_object; |
| 2759 | int c; |
| 2760 | { |
| 2761 | struct font *font; |
| 2762 | |
| 2763 | font_assert (FONT_OBJECT_P (font_object)); |
| 2764 | font = XFONT_OBJECT (font_object); |
| 2765 | return font->driver->encode_char (font, c); |
| 2766 | } |
| 2767 | |
| 2768 | |
| 2769 | /* Return the name of FONT_OBJECT. */ |
| 2770 | |
| 2771 | Lisp_Object |
| 2772 | font_get_name (font_object) |
| 2773 | Lisp_Object font_object; |
| 2774 | { |
| 2775 | font_assert (FONT_OBJECT_P (font_object)); |
| 2776 | return AREF (font_object, FONT_NAME_INDEX); |
| 2777 | } |
| 2778 | |
| 2779 | |
| 2780 | /* Return the specification of FONT_OBJECT. */ |
| 2781 | |
| 2782 | Lisp_Object |
| 2783 | font_get_spec (font_object) |
| 2784 | Lisp_Object font_object; |
| 2785 | { |
| 2786 | Lisp_Object spec = font_make_spec (); |
| 2787 | int i; |
| 2788 | |
| 2789 | for (i = 0; i < FONT_SIZE_INDEX; i++) |
| 2790 | ASET (spec, i, AREF (font_object, i)); |
| 2791 | ASET (spec, FONT_SIZE_INDEX, |
| 2792 | make_number (XFONT_OBJECT (font_object)->pixel_size)); |
| 2793 | return spec; |
| 2794 | } |
| 2795 | |
| 2796 | Lisp_Object |
| 2797 | font_spec_from_name (font_name) |
| 2798 | Lisp_Object font_name; |
| 2799 | { |
| 2800 | Lisp_Object args[2]; |
| 2801 | |
| 2802 | args[0] = QCname; |
| 2803 | args[1] = font_name; |
| 2804 | return Ffont_spec (2, args); |
| 2805 | } |
| 2806 | |
| 2807 | |
| 2808 | void |
| 2809 | font_clear_prop (attrs, prop) |
| 2810 | Lisp_Object *attrs; |
| 2811 | enum font_property_index prop; |
| 2812 | { |
| 2813 | Lisp_Object font = attrs[LFACE_FONT_INDEX]; |
| 2814 | |
| 2815 | if (! FONTP (font)) |
| 2816 | return; |
| 2817 | if (NILP (AREF (font, prop)) |
| 2818 | && prop != FONT_FAMILY_INDEX && prop != FONT_FOUNDRY_INDEX |
| 2819 | && prop != FONT_SIZE_INDEX) |
| 2820 | return; |
| 2821 | font = Fcopy_font_spec (font); |
| 2822 | ASET (font, prop, Qnil); |
| 2823 | if (prop == FONT_FAMILY_INDEX || prop == FONT_FOUNDRY_INDEX) |
| 2824 | { |
| 2825 | if (prop == FONT_FAMILY_INDEX) |
| 2826 | ASET (font, FONT_FOUNDRY_INDEX, Qnil); |
| 2827 | ASET (font, FONT_ADSTYLE_INDEX, Qnil); |
| 2828 | ASET (font, FONT_REGISTRY_INDEX, Qnil); |
| 2829 | ASET (font, FONT_SIZE_INDEX, Qnil); |
| 2830 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 2831 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 2832 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 2833 | } |
| 2834 | else if (prop == FONT_SIZE_INDEX) |
| 2835 | { |
| 2836 | ASET (font, FONT_DPI_INDEX, Qnil); |
| 2837 | ASET (font, FONT_SPACING_INDEX, Qnil); |
| 2838 | ASET (font, FONT_AVGWIDTH_INDEX, Qnil); |
| 2839 | } |
| 2840 | attrs[LFACE_FONT_INDEX] = font; |
| 2841 | } |
| 2842 | |
| 2843 | void |
| 2844 | font_update_lface (f, attrs) |
| 2845 | FRAME_PTR f; |
| 2846 | Lisp_Object *attrs; |
| 2847 | { |
| 2848 | Lisp_Object spec; |
| 2849 | |
| 2850 | spec = attrs[LFACE_FONT_INDEX]; |
| 2851 | if (! FONT_SPEC_P (spec)) |
| 2852 | return; |
| 2853 | |
| 2854 | if (! NILP (AREF (spec, FONT_FOUNDRY_INDEX))) |
| 2855 | attrs[LFACE_FOUNDRY_INDEX] = SYMBOL_NAME (AREF (spec, FONT_FOUNDRY_INDEX)); |
| 2856 | if (! NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 2857 | attrs[LFACE_FAMILY_INDEX] = SYMBOL_NAME (AREF (spec, FONT_FAMILY_INDEX)); |
| 2858 | if (! NILP (AREF (spec, FONT_WEIGHT_INDEX))) |
| 2859 | attrs[LFACE_WEIGHT_INDEX] = FONT_WEIGHT_FOR_FACE (spec); |
| 2860 | if (! NILP (AREF (spec, FONT_SLANT_INDEX))) |
| 2861 | attrs[LFACE_SLANT_INDEX] = FONT_SLANT_FOR_FACE (spec);; |
| 2862 | if (! NILP (AREF (spec, FONT_WIDTH_INDEX))) |
| 2863 | attrs[LFACE_SWIDTH_INDEX] = FONT_WIDTH_FOR_FACE (spec); |
| 2864 | if (! NILP (AREF (spec, FONT_SIZE_INDEX))) |
| 2865 | { |
| 2866 | int point; |
| 2867 | |
| 2868 | if (INTEGERP (AREF (spec, FONT_SIZE_INDEX))) |
| 2869 | { |
| 2870 | Lisp_Object val; |
| 2871 | int dpi = f->resy; |
| 2872 | |
| 2873 | val = Ffont_get (spec, QCdpi); |
| 2874 | if (! NILP (val)) |
| 2875 | dpi = XINT (val); |
| 2876 | point = PIXEL_TO_POINT (XINT (AREF (spec, FONT_SIZE_INDEX)) * 10, |
| 2877 | dpi); |
| 2878 | } |
| 2879 | else if (FLOATP (AREF (spec, FONT_SIZE_INDEX))) |
| 2880 | point = XFLOAT_DATA (AREF (spec, FONT_SIZE_INDEX)) * 10; |
| 2881 | attrs[LFACE_HEIGHT_INDEX] = make_number (point); |
| 2882 | } |
| 2883 | } |
| 2884 | |
| 2885 | |
| 2886 | /* Return a font-entity satisfying SPEC and best matching with face's |
| 2887 | font related attributes in ATTRS. C, if not negative, is a |
| 2888 | character that the entity must support. */ |
| 2889 | |
| 2890 | Lisp_Object |
| 2891 | font_find_for_lface (f, attrs, spec, c) |
| 2892 | FRAME_PTR f; |
| 2893 | Lisp_Object *attrs; |
| 2894 | Lisp_Object spec; |
| 2895 | int c; |
| 2896 | { |
| 2897 | Lisp_Object work; |
| 2898 | Lisp_Object frame, entities, val, props[FONT_REGISTRY_INDEX + 1] ; |
| 2899 | Lisp_Object size, foundry[3], *family, registry[3]; |
| 2900 | int pixel_size; |
| 2901 | int i, j, k, result; |
| 2902 | |
| 2903 | registry[0] = AREF (spec, FONT_REGISTRY_INDEX); |
| 2904 | if (NILP (registry[0])) |
| 2905 | { |
| 2906 | registry[0] = Qiso8859_1; |
| 2907 | registry[1] = Qascii_0; |
| 2908 | registry[2] = null_vector; |
| 2909 | } |
| 2910 | else |
| 2911 | registry[1] = null_vector; |
| 2912 | |
| 2913 | if (c >= 0 && ! NILP (AREF (spec, FONT_REGISTRY_INDEX))) |
| 2914 | { |
| 2915 | struct charset *encoding, *repertory; |
| 2916 | |
| 2917 | if (font_registry_charsets (AREF (spec, FONT_REGISTRY_INDEX), |
| 2918 | &encoding, &repertory) < 0) |
| 2919 | return Qnil; |
| 2920 | if (repertory) |
| 2921 | { |
| 2922 | if (ENCODE_CHAR (repertory, c) == CHARSET_INVALID_CODE (repertory)) |
| 2923 | return Qnil; |
| 2924 | /* Any font of this registry support C. So, let's |
| 2925 | suppress the further checking. */ |
| 2926 | c = -1; |
| 2927 | } |
| 2928 | else if (c > encoding->max_char) |
| 2929 | return Qnil; |
| 2930 | } |
| 2931 | |
| 2932 | work = Fcopy_font_spec (spec); |
| 2933 | XSETFRAME (frame, f); |
| 2934 | size = AREF (spec, FONT_SIZE_INDEX); |
| 2935 | pixel_size = font_pixel_size (f, spec); |
| 2936 | if (pixel_size == 0) |
| 2937 | { |
| 2938 | double pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 2939 | |
| 2940 | pixel_size = POINT_TO_PIXEL (pt / 10, f->resy); |
| 2941 | } |
| 2942 | ASET (work, FONT_SIZE_INDEX, Qnil); |
| 2943 | foundry[0] = AREF (work, FONT_FOUNDRY_INDEX); |
| 2944 | if (! NILP (foundry[0])) |
| 2945 | foundry[1] = null_vector; |
| 2946 | else if (STRINGP (attrs[LFACE_FOUNDRY_INDEX])) |
| 2947 | { |
| 2948 | foundry[0] = font_intern_prop (SDATA (attrs[LFACE_FOUNDRY_INDEX]), |
| 2949 | SBYTES (attrs[LFACE_FOUNDRY_INDEX]), 1); |
| 2950 | foundry[1] = Qnil; |
| 2951 | foundry[2] = null_vector; |
| 2952 | } |
| 2953 | else |
| 2954 | foundry[0] = Qnil, foundry[1] = null_vector; |
| 2955 | |
| 2956 | val = AREF (work, FONT_FAMILY_INDEX); |
| 2957 | if (NILP (val) && STRINGP (attrs[LFACE_FAMILY_INDEX])) |
| 2958 | val = font_intern_prop (SDATA (attrs[LFACE_FAMILY_INDEX]), |
| 2959 | SBYTES (attrs[LFACE_FAMILY_INDEX]), 1); |
| 2960 | if (NILP (val)) |
| 2961 | { |
| 2962 | family = alloca ((sizeof family[0]) * 2); |
| 2963 | family[0] = Qnil; |
| 2964 | family[1] = null_vector; /* terminator. */ |
| 2965 | } |
| 2966 | else |
| 2967 | { |
| 2968 | Lisp_Object alters |
| 2969 | = Fassoc_string (val, Vface_alternative_font_family_alist, Qt); |
| 2970 | |
| 2971 | if (! NILP (alters)) |
| 2972 | { |
| 2973 | family = alloca ((sizeof family[0]) * (XINT (Flength (alters)) + 2)); |
| 2974 | for (i = 0; CONSP (alters); i++, alters = XCDR (alters)) |
| 2975 | family[i] = XCAR (alters); |
| 2976 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 2977 | family[i++] = Qnil; |
| 2978 | family[i] = null_vector; |
| 2979 | } |
| 2980 | else |
| 2981 | { |
| 2982 | family = alloca ((sizeof family[0]) * 3); |
| 2983 | i = 0; |
| 2984 | family[i++] = val; |
| 2985 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) |
| 2986 | family[i++] = Qnil; |
| 2987 | family[i] = null_vector; |
| 2988 | } |
| 2989 | } |
| 2990 | |
| 2991 | for (i = 0; SYMBOLP (family[i]); i++) |
| 2992 | { |
| 2993 | ASET (work, FONT_FAMILY_INDEX, family[i]); |
| 2994 | for (j = 0; SYMBOLP (foundry[j]); j++) |
| 2995 | { |
| 2996 | ASET (work, FONT_FOUNDRY_INDEX, foundry[j]); |
| 2997 | for (k = 0; SYMBOLP (registry[k]); k++) |
| 2998 | { |
| 2999 | ASET (work, FONT_REGISTRY_INDEX, registry[j]); |
| 3000 | entities = font_list_entities (frame, work); |
| 3001 | if (ASIZE (entities) > 0) |
| 3002 | goto found; |
| 3003 | } |
| 3004 | } |
| 3005 | } |
| 3006 | return Qnil; |
| 3007 | found: |
| 3008 | if (ASIZE (entities) == 1) |
| 3009 | { |
| 3010 | if (c < 0) |
| 3011 | return AREF (entities, 0); |
| 3012 | } |
| 3013 | else |
| 3014 | { |
| 3015 | /* Sort fonts by properties specified in LFACE. */ |
| 3016 | Lisp_Object prefer = scratch_font_prefer; |
| 3017 | |
| 3018 | for (i = 0; i < FONT_EXTRA_INDEX; i++) |
| 3019 | ASET (prefer, i, AREF (work, i)); |
| 3020 | if (FONTP (attrs[LFACE_FONT_INDEX])) |
| 3021 | { |
| 3022 | Lisp_Object face_font = attrs[LFACE_FONT_INDEX]; |
| 3023 | |
| 3024 | for (i = 0; i < FONT_EXTRA_INDEX; i++) |
| 3025 | if (NILP (AREF (prefer, i))) |
| 3026 | ASET (prefer, i, AREF (face_font, i)); |
| 3027 | } |
| 3028 | if (NILP (AREF (prefer, FONT_WEIGHT_INDEX))) |
| 3029 | FONT_SET_STYLE (prefer, FONT_WEIGHT_INDEX, attrs[LFACE_WEIGHT_INDEX]); |
| 3030 | if (NILP (AREF (prefer, FONT_SLANT_INDEX))) |
| 3031 | FONT_SET_STYLE (prefer, FONT_SLANT_INDEX, attrs[LFACE_SLANT_INDEX]); |
| 3032 | if (NILP (AREF (prefer, FONT_WIDTH_INDEX))) |
| 3033 | FONT_SET_STYLE (prefer, FONT_WIDTH_INDEX, attrs[LFACE_SWIDTH_INDEX]); |
| 3034 | ASET (prefer, FONT_SIZE_INDEX, make_number (pixel_size)); |
| 3035 | entities = font_sort_entites (entities, prefer, frame, work, c < 0); |
| 3036 | } |
| 3037 | if (c < 0) |
| 3038 | return entities; |
| 3039 | |
| 3040 | for (i = 0; i < ASIZE (entities); i++) |
| 3041 | { |
| 3042 | int j; |
| 3043 | |
| 3044 | val = AREF (entities, i); |
| 3045 | if (i > 0) |
| 3046 | { |
| 3047 | for (j = FONT_FOUNDRY_INDEX; j <= FONT_REGISTRY_INDEX; j++) |
| 3048 | if (! EQ (AREF (val, j), props[j])) |
| 3049 | break; |
| 3050 | if (j > FONT_REGISTRY_INDEX) |
| 3051 | continue; |
| 3052 | } |
| 3053 | for (j = FONT_FOUNDRY_INDEX; j <= FONT_REGISTRY_INDEX; j++) |
| 3054 | props[j] = AREF (val, j); |
| 3055 | result = font_has_char (f, val, c); |
| 3056 | if (result > 0) |
| 3057 | return val; |
| 3058 | if (result == 0) |
| 3059 | return Qnil; |
| 3060 | val = font_open_for_lface (f, val, attrs, spec); |
| 3061 | if (NILP (val)) |
| 3062 | continue; |
| 3063 | result = font_has_char (f, val, c); |
| 3064 | font_close_object (f, val); |
| 3065 | if (result > 0) |
| 3066 | return AREF (entities, i); |
| 3067 | } |
| 3068 | return Qnil; |
| 3069 | } |
| 3070 | |
| 3071 | |
| 3072 | Lisp_Object |
| 3073 | font_open_for_lface (f, entity, attrs, spec) |
| 3074 | FRAME_PTR f; |
| 3075 | Lisp_Object entity; |
| 3076 | Lisp_Object *attrs; |
| 3077 | Lisp_Object spec; |
| 3078 | { |
| 3079 | int size; |
| 3080 | |
| 3081 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX)) |
| 3082 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0) |
| 3083 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 3084 | else if (FONT_SPEC_P (spec) && ! NILP (AREF (spec, FONT_SIZE_INDEX))) |
| 3085 | size = font_pixel_size (f, spec); |
| 3086 | else |
| 3087 | { |
| 3088 | double pt = XINT (attrs[LFACE_HEIGHT_INDEX]); |
| 3089 | |
| 3090 | pt /= 10; |
| 3091 | size = POINT_TO_PIXEL (pt, f->resy); |
| 3092 | } |
| 3093 | return font_open_entity (f, entity, size); |
| 3094 | } |
| 3095 | |
| 3096 | |
| 3097 | /* Find a font satisfying SPEC and best matching with face's |
| 3098 | attributes in ATTRS on FRAME, and return the opened |
| 3099 | font-object. */ |
| 3100 | |
| 3101 | Lisp_Object |
| 3102 | font_load_for_lface (f, attrs, spec) |
| 3103 | FRAME_PTR f; |
| 3104 | Lisp_Object *attrs, spec; |
| 3105 | { |
| 3106 | Lisp_Object entity; |
| 3107 | |
| 3108 | entity = font_find_for_lface (f, attrs, spec, -1); |
| 3109 | if (NILP (entity)) |
| 3110 | { |
| 3111 | /* No font is listed for SPEC, but each font-backend may have |
| 3112 | the different criteria about "font matching". So, try |
| 3113 | it. */ |
| 3114 | entity = font_matching_entity (f, attrs, spec); |
| 3115 | if (NILP (entity)) |
| 3116 | return Qnil; |
| 3117 | } |
| 3118 | return font_open_for_lface (f, entity, attrs, spec); |
| 3119 | } |
| 3120 | |
| 3121 | |
| 3122 | /* Make FACE on frame F ready to use the font opened for FACE. */ |
| 3123 | |
| 3124 | void |
| 3125 | font_prepare_for_face (f, face) |
| 3126 | FRAME_PTR f; |
| 3127 | struct face *face; |
| 3128 | { |
| 3129 | if (face->font->driver->prepare_face) |
| 3130 | face->font->driver->prepare_face (f, face); |
| 3131 | } |
| 3132 | |
| 3133 | |
| 3134 | /* Make FACE on frame F stop using the font opened for FACE. */ |
| 3135 | |
| 3136 | void |
| 3137 | font_done_for_face (f, face) |
| 3138 | FRAME_PTR f; |
| 3139 | struct face *face; |
| 3140 | { |
| 3141 | if (face->font->driver->done_face) |
| 3142 | face->font->driver->done_face (f, face); |
| 3143 | face->extra = NULL; |
| 3144 | } |
| 3145 | |
| 3146 | |
| 3147 | /* Open a font best matching with NAME on frame F. If no proper font |
| 3148 | is found, return Qnil. */ |
| 3149 | |
| 3150 | Lisp_Object |
| 3151 | font_open_by_name (f, name) |
| 3152 | FRAME_PTR f; |
| 3153 | char *name; |
| 3154 | { |
| 3155 | Lisp_Object args[2]; |
| 3156 | Lisp_Object spec, attrs[LFACE_VECTOR_SIZE]; |
| 3157 | |
| 3158 | args[0] = QCname; |
| 3159 | args[1] = make_unibyte_string (name, strlen (name)); |
| 3160 | spec = Ffont_spec (2, args); |
| 3161 | /* We set up the default font-related attributes of a face to prefer |
| 3162 | a moderate font. */ |
| 3163 | attrs[LFACE_FAMILY_INDEX] = attrs[LFACE_FOUNDRY_INDEX] = Qnil; |
| 3164 | attrs[LFACE_SWIDTH_INDEX] = attrs[LFACE_WEIGHT_INDEX] |
| 3165 | = attrs[LFACE_SLANT_INDEX] = Qnormal; |
| 3166 | attrs[LFACE_HEIGHT_INDEX] = make_number (120); |
| 3167 | attrs[LFACE_FONT_INDEX] = Qnil; |
| 3168 | |
| 3169 | return font_load_for_lface (f, attrs, spec); |
| 3170 | } |
| 3171 | |
| 3172 | |
| 3173 | /* Register font-driver DRIVER. This function is used in two ways. |
| 3174 | |
| 3175 | The first is with frame F non-NULL. In this case, make DRIVER |
| 3176 | available (but not yet activated) on F. All frame creaters |
| 3177 | (e.g. Fx_create_frame) must call this function at least once with |
| 3178 | an available font-driver. |
| 3179 | |
| 3180 | The second is with frame F NULL. In this case, DRIVER is globally |
| 3181 | registered in the variable `font_driver_list'. All font-driver |
| 3182 | implementations must call this function in its syms_of_XXXX |
| 3183 | (e.g. syms_of_xfont). */ |
| 3184 | |
| 3185 | void |
| 3186 | register_font_driver (driver, f) |
| 3187 | struct font_driver *driver; |
| 3188 | FRAME_PTR f; |
| 3189 | { |
| 3190 | struct font_driver_list *root = f ? f->font_driver_list : font_driver_list; |
| 3191 | struct font_driver_list *prev, *list; |
| 3192 | |
| 3193 | if (f && ! driver->draw) |
| 3194 | error ("Unusable font driver for a frame: %s", |
| 3195 | SDATA (SYMBOL_NAME (driver->type))); |
| 3196 | |
| 3197 | for (prev = NULL, list = root; list; prev = list, list = list->next) |
| 3198 | if (EQ (list->driver->type, driver->type)) |
| 3199 | error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver->type))); |
| 3200 | |
| 3201 | list = malloc (sizeof (struct font_driver_list)); |
| 3202 | list->on = 0; |
| 3203 | list->driver = driver; |
| 3204 | list->next = NULL; |
| 3205 | if (prev) |
| 3206 | prev->next = list; |
| 3207 | else if (f) |
| 3208 | f->font_driver_list = list; |
| 3209 | else |
| 3210 | font_driver_list = list; |
| 3211 | if (! f) |
| 3212 | num_font_drivers++; |
| 3213 | } |
| 3214 | |
| 3215 | |
| 3216 | /* Make the frame F use font backends listed in NEW_DRIVERS (list of |
| 3217 | symbols, e.g. xft, x). If NEW_DRIVERS is t, make F use all |
| 3218 | available font drivers. If NEW_DRIVERS is nil, finalize all drivers. |
| 3219 | |
| 3220 | A caller must free all realized faces if any in advance. The |
| 3221 | return value is a list of font backends actually made used on |
| 3222 | F. */ |
| 3223 | |
| 3224 | Lisp_Object |
| 3225 | font_update_drivers (f, new_drivers) |
| 3226 | FRAME_PTR f; |
| 3227 | Lisp_Object new_drivers; |
| 3228 | { |
| 3229 | Lisp_Object active_drivers = Qnil; |
| 3230 | struct font_driver *driver; |
| 3231 | struct font_driver_list *list; |
| 3232 | |
| 3233 | /* At first, turn off non-requested drivers, and turn on requested |
| 3234 | drivers. */ |
| 3235 | for (list = f->font_driver_list; list; list = list->next) |
| 3236 | { |
| 3237 | driver = list->driver; |
| 3238 | if ((EQ (new_drivers, Qt) || ! NILP (Fmemq (driver->type, new_drivers))) |
| 3239 | != list->on) |
| 3240 | { |
| 3241 | if (list->on) |
| 3242 | { |
| 3243 | if (driver->end_for_frame) |
| 3244 | driver->end_for_frame (f); |
| 3245 | font_finish_cache (f, driver); |
| 3246 | list->on = 0; |
| 3247 | } |
| 3248 | else |
| 3249 | { |
| 3250 | if (! driver->start_for_frame |
| 3251 | || driver->start_for_frame (f) == 0) |
| 3252 | { |
| 3253 | font_prepare_cache (f, driver); |
| 3254 | list->on = 1; |
| 3255 | } |
| 3256 | } |
| 3257 | } |
| 3258 | } |
| 3259 | |
| 3260 | if (NILP (new_drivers)) |
| 3261 | return Qnil; |
| 3262 | |
| 3263 | if (! EQ (new_drivers, Qt)) |
| 3264 | { |
| 3265 | /* Re-order the driver list according to new_drivers. */ |
| 3266 | struct font_driver_list **list_table, *list; |
| 3267 | Lisp_Object tail; |
| 3268 | int i; |
| 3269 | |
| 3270 | list_table = alloca (sizeof list_table[0] * (num_font_drivers + 1)); |
| 3271 | for (i = 0, tail = new_drivers; ! NILP (tail); tail = XCDR (tail)) |
| 3272 | { |
| 3273 | for (list = f->font_driver_list; list; list = list->next) |
| 3274 | if (list->on && EQ (list->driver->type, XCAR (tail))) |
| 3275 | break; |
| 3276 | if (list) |
| 3277 | list_table[i++] = list; |
| 3278 | } |
| 3279 | for (list = f->font_driver_list; list; list = list->next) |
| 3280 | if (! list->on) |
| 3281 | list_table[i] = list; |
| 3282 | list_table[i] = NULL; |
| 3283 | |
| 3284 | f->font_driver_list = list = NULL; |
| 3285 | for (i = 0; list_table[i]; i++) |
| 3286 | { |
| 3287 | if (list) |
| 3288 | list->next = list_table[i], list = list->next; |
| 3289 | else |
| 3290 | f->font_driver_list = list = list_table[i]; |
| 3291 | } |
| 3292 | list->next = NULL; |
| 3293 | } |
| 3294 | |
| 3295 | for (list = f->font_driver_list; list; list = list->next) |
| 3296 | if (list->on) |
| 3297 | active_drivers = nconc2 (active_drivers, |
| 3298 | Fcons (list->driver->type, Qnil)); |
| 3299 | return active_drivers; |
| 3300 | } |
| 3301 | |
| 3302 | int |
| 3303 | font_put_frame_data (f, driver, data) |
| 3304 | FRAME_PTR f; |
| 3305 | struct font_driver *driver; |
| 3306 | void *data; |
| 3307 | { |
| 3308 | struct font_data_list *list, *prev; |
| 3309 | |
| 3310 | for (prev = NULL, list = f->font_data_list; list; |
| 3311 | prev = list, list = list->next) |
| 3312 | if (list->driver == driver) |
| 3313 | break; |
| 3314 | if (! data) |
| 3315 | { |
| 3316 | if (list) |
| 3317 | { |
| 3318 | if (prev) |
| 3319 | prev->next = list->next; |
| 3320 | else |
| 3321 | f->font_data_list = list->next; |
| 3322 | free (list); |
| 3323 | } |
| 3324 | return 0; |
| 3325 | } |
| 3326 | |
| 3327 | if (! list) |
| 3328 | { |
| 3329 | list = malloc (sizeof (struct font_data_list)); |
| 3330 | if (! list) |
| 3331 | return -1; |
| 3332 | list->driver = driver; |
| 3333 | list->next = f->font_data_list; |
| 3334 | f->font_data_list = list; |
| 3335 | } |
| 3336 | list->data = data; |
| 3337 | return 0; |
| 3338 | } |
| 3339 | |
| 3340 | |
| 3341 | void * |
| 3342 | font_get_frame_data (f, driver) |
| 3343 | FRAME_PTR f; |
| 3344 | struct font_driver *driver; |
| 3345 | { |
| 3346 | struct font_data_list *list; |
| 3347 | |
| 3348 | for (list = f->font_data_list; list; list = list->next) |
| 3349 | if (list->driver == driver) |
| 3350 | break; |
| 3351 | if (! list) |
| 3352 | return NULL; |
| 3353 | return list->data; |
| 3354 | } |
| 3355 | |
| 3356 | |
| 3357 | /* Return the font used to draw character C by FACE at buffer position |
| 3358 | POS in window W. If STRING is non-nil, it is a string containing C |
| 3359 | at index POS. If C is negative, get C from the current buffer or |
| 3360 | STRING. */ |
| 3361 | |
| 3362 | Lisp_Object |
| 3363 | font_at (c, pos, face, w, string) |
| 3364 | int c; |
| 3365 | EMACS_INT pos; |
| 3366 | struct face *face; |
| 3367 | struct window *w; |
| 3368 | Lisp_Object string; |
| 3369 | { |
| 3370 | FRAME_PTR f; |
| 3371 | int multibyte; |
| 3372 | Lisp_Object font_object; |
| 3373 | |
| 3374 | if (c < 0) |
| 3375 | { |
| 3376 | if (NILP (string)) |
| 3377 | { |
| 3378 | multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
| 3379 | if (multibyte) |
| 3380 | { |
| 3381 | EMACS_INT pos_byte = CHAR_TO_BYTE (pos); |
| 3382 | |
| 3383 | c = FETCH_CHAR (pos_byte); |
| 3384 | } |
| 3385 | else |
| 3386 | c = FETCH_BYTE (pos); |
| 3387 | } |
| 3388 | else |
| 3389 | { |
| 3390 | unsigned char *str; |
| 3391 | |
| 3392 | multibyte = STRING_MULTIBYTE (string); |
| 3393 | if (multibyte) |
| 3394 | { |
| 3395 | EMACS_INT pos_byte = string_char_to_byte (string, pos); |
| 3396 | |
| 3397 | str = SDATA (string) + pos_byte; |
| 3398 | c = STRING_CHAR (str, 0); |
| 3399 | } |
| 3400 | else |
| 3401 | c = SDATA (string)[pos]; |
| 3402 | } |
| 3403 | } |
| 3404 | |
| 3405 | f = XFRAME (w->frame); |
| 3406 | if (! FRAME_WINDOW_P (f)) |
| 3407 | return Qnil; |
| 3408 | if (! face) |
| 3409 | { |
| 3410 | int face_id; |
| 3411 | EMACS_INT endptr; |
| 3412 | |
| 3413 | if (STRINGP (string)) |
| 3414 | face_id = face_at_string_position (w, string, pos, 0, -1, -1, &endptr, |
| 3415 | DEFAULT_FACE_ID, 0); |
| 3416 | else |
| 3417 | face_id = face_at_buffer_position (w, pos, -1, -1, &endptr, |
| 3418 | pos + 100, 0); |
| 3419 | face = FACE_FROM_ID (f, face_id); |
| 3420 | } |
| 3421 | if (multibyte) |
| 3422 | { |
| 3423 | int face_id = FACE_FOR_CHAR (f, face, c, pos, string); |
| 3424 | face = FACE_FROM_ID (f, face_id); |
| 3425 | } |
| 3426 | if (! face->font) |
| 3427 | return Qnil; |
| 3428 | |
| 3429 | font_assert (font_check_object ((struct font *) face->font)); |
| 3430 | XSETFONT (font_object, face->font); |
| 3431 | return font_object; |
| 3432 | } |
| 3433 | |
| 3434 | |
| 3435 | /* Check how many characters after POS (at most to LIMIT) can be |
| 3436 | displayed by the same font. FACE is the face selected for the |
| 3437 | character as POS on frame F. STRING, if not nil, is the string to |
| 3438 | check instead of the current buffer. |
| 3439 | |
| 3440 | The return value is the position of the character that is displayed |
| 3441 | by the differnt font than that of the character as POS. */ |
| 3442 | |
| 3443 | EMACS_INT |
| 3444 | font_range (pos, limit, face, f, string) |
| 3445 | EMACS_INT pos, limit; |
| 3446 | struct face *face; |
| 3447 | FRAME_PTR f; |
| 3448 | Lisp_Object string; |
| 3449 | { |
| 3450 | int multibyte; |
| 3451 | EMACS_INT pos_byte; |
| 3452 | int c; |
| 3453 | struct font *font; |
| 3454 | int first = 1; |
| 3455 | |
| 3456 | if (NILP (string)) |
| 3457 | { |
| 3458 | multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
| 3459 | pos_byte = CHAR_TO_BYTE (pos); |
| 3460 | } |
| 3461 | else |
| 3462 | { |
| 3463 | multibyte = STRING_MULTIBYTE (string); |
| 3464 | pos_byte = string_char_to_byte (string, pos); |
| 3465 | } |
| 3466 | |
| 3467 | if (! multibyte) |
| 3468 | /* All unibyte character are displayed by the same font. */ |
| 3469 | return limit; |
| 3470 | |
| 3471 | while (pos < limit) |
| 3472 | { |
| 3473 | int face_id; |
| 3474 | |
| 3475 | if (NILP (string)) |
| 3476 | FETCH_CHAR_ADVANCE_NO_CHECK (c, pos, pos_byte); |
| 3477 | else |
| 3478 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, string, pos, pos_byte); |
| 3479 | face_id = FACE_FOR_CHAR (f, face, c, pos, string); |
| 3480 | face = FACE_FROM_ID (f, face_id); |
| 3481 | if (first) |
| 3482 | { |
| 3483 | font = face->font; |
| 3484 | first = 0; |
| 3485 | continue; |
| 3486 | } |
| 3487 | else if (font != face->font) |
| 3488 | { |
| 3489 | pos--; |
| 3490 | break; |
| 3491 | } |
| 3492 | } |
| 3493 | return pos; |
| 3494 | } |
| 3495 | |
| 3496 | \f |
| 3497 | /* Lisp API */ |
| 3498 | |
| 3499 | DEFUN ("fontp", Ffontp, Sfontp, 1, 2, 0, |
| 3500 | doc: /* Return t if OBJECT is a font-spec, font-entity, or font-object. |
| 3501 | Return nil otherwise. |
| 3502 | Optional 2nd argument EXTRA-TYPE, if non-nil, specifies to check |
| 3503 | which kind of font it is. It must be one of `font-spec', `font-entity', |
| 3504 | `font-object'. */) |
| 3505 | (object, extra_type) |
| 3506 | Lisp_Object object, extra_type; |
| 3507 | { |
| 3508 | if (NILP (extra_type)) |
| 3509 | return (FONTP (object) ? Qt : Qnil); |
| 3510 | if (EQ (extra_type, Qfont_spec)) |
| 3511 | return (FONT_SPEC_P (object) ? Qt : Qnil); |
| 3512 | if (EQ (extra_type, Qfont_entity)) |
| 3513 | return (FONT_ENTITY_P (object) ? Qt : Qnil); |
| 3514 | if (EQ (extra_type, Qfont_object)) |
| 3515 | return (FONT_OBJECT_P (object) ? Qt : Qnil); |
| 3516 | wrong_type_argument (intern ("font-extra-type"), extra_type); |
| 3517 | } |
| 3518 | |
| 3519 | DEFUN ("font-spec", Ffont_spec, Sfont_spec, 0, MANY, 0, |
| 3520 | doc: /* Return a newly created font-spec with arguments as properties. |
| 3521 | |
| 3522 | ARGS must come in pairs KEY VALUE of font properties. KEY must be a |
| 3523 | valid font property name listed below: |
| 3524 | |
| 3525 | `:family', `:weight', `:slant', `:width' |
| 3526 | |
| 3527 | They are the same as face attributes of the same name. See |
| 3528 | `set-face-attribute'. |
| 3529 | |
| 3530 | `:foundry' |
| 3531 | |
| 3532 | VALUE must be a string or a symbol specifying the font foundry, e.g. ``misc''. |
| 3533 | |
| 3534 | `:adstyle' |
| 3535 | |
| 3536 | VALUE must be a string or a symbol specifying the additional |
| 3537 | typographic style information of a font, e.g. ``sans''. |
| 3538 | |
| 3539 | `:registry' |
| 3540 | |
| 3541 | VALUE must be a string or a symbol specifying the charset registry and |
| 3542 | encoding of a font, e.g. ``iso8859-1''. |
| 3543 | |
| 3544 | `:size' |
| 3545 | |
| 3546 | VALUE must be a non-negative integer or a floating point number |
| 3547 | specifying the font size. It specifies the font size in pixels |
| 3548 | (if VALUE is an integer), or in points (if VALUE is a float). |
| 3549 | usage: (font-spec ARGS ...) */) |
| 3550 | (nargs, args) |
| 3551 | int nargs; |
| 3552 | Lisp_Object *args; |
| 3553 | { |
| 3554 | Lisp_Object spec = font_make_spec (); |
| 3555 | int i; |
| 3556 | |
| 3557 | for (i = 0; i < nargs; i += 2) |
| 3558 | { |
| 3559 | Lisp_Object key = args[i], val = args[i + 1]; |
| 3560 | |
| 3561 | if (EQ (key, QCname)) |
| 3562 | { |
| 3563 | CHECK_STRING (val); |
| 3564 | font_parse_name ((char *) SDATA (val), spec); |
| 3565 | font_put_extra (spec, key, val); |
| 3566 | } |
| 3567 | else |
| 3568 | { |
| 3569 | int idx = get_font_prop_index (key); |
| 3570 | |
| 3571 | if (idx >= 0) |
| 3572 | { |
| 3573 | val = font_prop_validate (idx, Qnil, val); |
| 3574 | if (idx < FONT_EXTRA_INDEX) |
| 3575 | ASET (spec, idx, val); |
| 3576 | else |
| 3577 | font_put_extra (spec, key, val); |
| 3578 | } |
| 3579 | else |
| 3580 | font_put_extra (spec, key, font_prop_validate (0, key, val)); |
| 3581 | } |
| 3582 | } |
| 3583 | return spec; |
| 3584 | } |
| 3585 | |
| 3586 | DEFUN ("copy-font-spec", Fcopy_font_spec, Scopy_font_spec, 1, 1, 0, |
| 3587 | doc: /* Return a copy of FONT as a font-spec. */) |
| 3588 | (font) |
| 3589 | Lisp_Object font; |
| 3590 | { |
| 3591 | Lisp_Object new_spec, tail, extra; |
| 3592 | int i; |
| 3593 | |
| 3594 | CHECK_FONT (font); |
| 3595 | new_spec = font_make_spec (); |
| 3596 | for (i = 1; i < FONT_EXTRA_INDEX; i++) |
| 3597 | ASET (new_spec, i, AREF (font, i)); |
| 3598 | extra = Qnil; |
| 3599 | for (tail = AREF (font, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
| 3600 | { |
| 3601 | if (! EQ (XCAR (XCAR (tail)), QCfont_entity)) |
| 3602 | extra = Fcons (Fcons (XCAR (XCAR (tail)), XCDR (XCAR (tail))), extra); |
| 3603 | } |
| 3604 | ASET (new_spec, FONT_EXTRA_INDEX, extra); |
| 3605 | return new_spec; |
| 3606 | } |
| 3607 | |
| 3608 | DEFUN ("merge-font-spec", Fmerge_font_spec, Smerge_font_spec, 2, 2, 0, |
| 3609 | doc: /* Merge font-specs FROM and TO, and return a new font-spec. |
| 3610 | Every specified properties in FROM override the corresponding |
| 3611 | properties in TO. */) |
| 3612 | (from, to) |
| 3613 | Lisp_Object from, to; |
| 3614 | { |
| 3615 | Lisp_Object extra, tail; |
| 3616 | int i; |
| 3617 | |
| 3618 | CHECK_FONT (from); |
| 3619 | CHECK_FONT (to); |
| 3620 | to = Fcopy_font_spec (to); |
| 3621 | for (i = 0; i < FONT_EXTRA_INDEX; i++) |
| 3622 | ASET (to, i, AREF (from, i)); |
| 3623 | extra = AREF (to, FONT_EXTRA_INDEX); |
| 3624 | for (tail = AREF (from, FONT_EXTRA_INDEX); CONSP (tail); tail = XCDR (tail)) |
| 3625 | if (! EQ (XCAR (XCAR (tail)), Qfont_entity)) |
| 3626 | { |
| 3627 | Lisp_Object slot = assq_no_quit (XCAR (XCAR (tail)), extra); |
| 3628 | |
| 3629 | if (! NILP (slot)) |
| 3630 | XSETCDR (slot, XCDR (XCAR (tail))); |
| 3631 | else |
| 3632 | extra = Fcons (Fcons (XCAR (XCAR (tail)), XCDR (XCAR (tail))), extra); |
| 3633 | } |
| 3634 | ASET (to, FONT_EXTRA_INDEX, extra); |
| 3635 | return to; |
| 3636 | } |
| 3637 | |
| 3638 | DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0, |
| 3639 | doc: /* Return the value of FONT's property KEY. |
| 3640 | FONT is a font-spec, a font-entity, or a font-object. */) |
| 3641 | (font, key) |
| 3642 | Lisp_Object font, key; |
| 3643 | { |
| 3644 | int idx; |
| 3645 | |
| 3646 | CHECK_FONT (font); |
| 3647 | CHECK_SYMBOL (key); |
| 3648 | |
| 3649 | idx = get_font_prop_index (key); |
| 3650 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 3651 | return AREF (font, idx); |
| 3652 | return Fcdr (Fassq (key, AREF (font, FONT_EXTRA_INDEX))); |
| 3653 | } |
| 3654 | |
| 3655 | |
| 3656 | DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0, |
| 3657 | doc: /* Set one property of FONT-SPEC: give property PROP value VAL. */) |
| 3658 | (font_spec, prop, val) |
| 3659 | Lisp_Object font_spec, prop, val; |
| 3660 | { |
| 3661 | int idx; |
| 3662 | |
| 3663 | CHECK_FONT_SPEC (font_spec); |
| 3664 | idx = get_font_prop_index (prop); |
| 3665 | if (idx >= 0 && idx < FONT_EXTRA_INDEX) |
| 3666 | ASET (font_spec, idx, font_prop_validate (idx, Qnil, val)); |
| 3667 | else |
| 3668 | font_put_extra (font_spec, prop, font_prop_validate (0, prop, val)); |
| 3669 | return val; |
| 3670 | } |
| 3671 | |
| 3672 | DEFUN ("list-fonts", Flist_fonts, Slist_fonts, 1, 4, 0, |
| 3673 | doc: /* List available fonts matching FONT-SPEC on the current frame. |
| 3674 | Optional 2nd argument FRAME specifies the target frame. |
| 3675 | Optional 3rd argument NUM, if non-nil, limits the number of returned fonts. |
| 3676 | Optional 4th argument PREFER, if non-nil, is a font-spec to |
| 3677 | control the order of the returned list. Fonts are sorted by |
| 3678 | how close they are to PREFER. */) |
| 3679 | (font_spec, frame, num, prefer) |
| 3680 | Lisp_Object font_spec, frame, num, prefer; |
| 3681 | { |
| 3682 | Lisp_Object vec, list, tail; |
| 3683 | int n = 0, i, len; |
| 3684 | |
| 3685 | if (NILP (frame)) |
| 3686 | frame = selected_frame; |
| 3687 | CHECK_LIVE_FRAME (frame); |
| 3688 | CHECK_FONT_SPEC (font_spec); |
| 3689 | if (! NILP (num)) |
| 3690 | { |
| 3691 | CHECK_NUMBER (num); |
| 3692 | n = XINT (num); |
| 3693 | if (n <= 0) |
| 3694 | return Qnil; |
| 3695 | } |
| 3696 | if (! NILP (prefer)) |
| 3697 | CHECK_FONT_SPEC (prefer); |
| 3698 | |
| 3699 | vec = font_list_entities (frame, font_spec); |
| 3700 | len = ASIZE (vec); |
| 3701 | if (len == 0) |
| 3702 | return Qnil; |
| 3703 | if (len == 1) |
| 3704 | return Fcons (AREF (vec, 0), Qnil); |
| 3705 | |
| 3706 | if (! NILP (prefer)) |
| 3707 | vec = font_sort_entites (vec, prefer, frame, font_spec, 0); |
| 3708 | |
| 3709 | list = tail = Fcons (AREF (vec, 0), Qnil); |
| 3710 | if (n == 0 || n > len) |
| 3711 | n = len; |
| 3712 | for (i = 1; i < n; i++) |
| 3713 | { |
| 3714 | Lisp_Object val = Fcons (AREF (vec, i), Qnil); |
| 3715 | |
| 3716 | XSETCDR (tail, val); |
| 3717 | tail = val; |
| 3718 | } |
| 3719 | return list; |
| 3720 | } |
| 3721 | |
| 3722 | DEFUN ("font-family-list", Ffont_family_list, Sfont_family_list, 0, 1, 0, |
| 3723 | doc: /* List available font families on the current frame. |
| 3724 | Optional argument FRAME, if non-nil, specifies the target frame. */) |
| 3725 | (frame) |
| 3726 | Lisp_Object frame; |
| 3727 | { |
| 3728 | FRAME_PTR f; |
| 3729 | struct font_driver_list *driver_list; |
| 3730 | Lisp_Object list; |
| 3731 | |
| 3732 | if (NILP (frame)) |
| 3733 | frame = selected_frame; |
| 3734 | CHECK_LIVE_FRAME (frame); |
| 3735 | f = XFRAME (frame); |
| 3736 | list = Qnil; |
| 3737 | for (driver_list = f->font_driver_list; driver_list; |
| 3738 | driver_list = driver_list->next) |
| 3739 | if (driver_list->driver->list_family) |
| 3740 | { |
| 3741 | Lisp_Object val = driver_list->driver->list_family (frame); |
| 3742 | |
| 3743 | if (NILP (list)) |
| 3744 | list = val; |
| 3745 | else |
| 3746 | { |
| 3747 | Lisp_Object tail = list; |
| 3748 | |
| 3749 | for (; CONSP (val); val = XCDR (val)) |
| 3750 | if (NILP (Fmemq (XCAR (val), tail))) |
| 3751 | list = Fcons (XCAR (val), list); |
| 3752 | } |
| 3753 | } |
| 3754 | return list; |
| 3755 | } |
| 3756 | |
| 3757 | DEFUN ("find-font", Ffind_font, Sfind_font, 1, 2, 0, |
| 3758 | doc: /* Return a font-entity matching with FONT-SPEC on the current frame. |
| 3759 | Optional 2nd argument FRAME, if non-nil, specifies the target frame. */) |
| 3760 | (font_spec, frame) |
| 3761 | Lisp_Object font_spec, frame; |
| 3762 | { |
| 3763 | Lisp_Object val = Flist_fonts (font_spec, frame, make_number (1), Qnil); |
| 3764 | |
| 3765 | if (CONSP (val)) |
| 3766 | val = XCAR (val); |
| 3767 | return val; |
| 3768 | } |
| 3769 | |
| 3770 | DEFUN ("font-xlfd-name", Ffont_xlfd_name, Sfont_xlfd_name, 1, 2, 0, |
| 3771 | doc: /* Return XLFD name of FONT. |
| 3772 | FONT is a font-spec, font-entity, or font-object. |
| 3773 | If the name is too long for XLFD (maximum 255 chars), return nil. |
| 3774 | If the 2nd optional arg FOLD-WILDCARDS is non-nil, |
| 3775 | the consecutive wildcards are folded to one. */) |
| 3776 | (font, fold_wildcards) |
| 3777 | Lisp_Object font, fold_wildcards; |
| 3778 | { |
| 3779 | char name[256]; |
| 3780 | int pixel_size = 0; |
| 3781 | |
| 3782 | CHECK_FONT (font); |
| 3783 | |
| 3784 | if (FONT_OBJECT_P (font)) |
| 3785 | { |
| 3786 | Lisp_Object font_name = AREF (font, FONT_NAME_INDEX); |
| 3787 | |
| 3788 | if (STRINGP (font_name) |
| 3789 | && SDATA (font_name)[0] == '-') |
| 3790 | { |
| 3791 | if (NILP (fold_wildcards)) |
| 3792 | return font_name; |
| 3793 | strcpy (name, (char *) SDATA (font_name)); |
| 3794 | goto done; |
| 3795 | } |
| 3796 | pixel_size = XFONT_OBJECT (font)->pixel_size; |
| 3797 | } |
| 3798 | if (font_unparse_xlfd (font, pixel_size, name, 256) < 0) |
| 3799 | return Qnil; |
| 3800 | done: |
| 3801 | if (! NILP (fold_wildcards)) |
| 3802 | { |
| 3803 | char *p0 = name, *p1; |
| 3804 | |
| 3805 | while ((p1 = strstr (p0, "-*-*"))) |
| 3806 | { |
| 3807 | strcpy (p1, p1 + 2); |
| 3808 | p0 = p1; |
| 3809 | } |
| 3810 | } |
| 3811 | |
| 3812 | return build_string (name); |
| 3813 | } |
| 3814 | |
| 3815 | DEFUN ("clear-font-cache", Fclear_font_cache, Sclear_font_cache, 0, 0, 0, |
| 3816 | doc: /* Clear font cache. */) |
| 3817 | () |
| 3818 | { |
| 3819 | Lisp_Object list, frame; |
| 3820 | |
| 3821 | FOR_EACH_FRAME (list, frame) |
| 3822 | { |
| 3823 | FRAME_PTR f = XFRAME (frame); |
| 3824 | struct font_driver_list *driver_list = f->font_driver_list; |
| 3825 | |
| 3826 | for (; driver_list; driver_list = driver_list->next) |
| 3827 | if (driver_list->on) |
| 3828 | { |
| 3829 | Lisp_Object cache = driver_list->driver->get_cache (f); |
| 3830 | Lisp_Object val; |
| 3831 | |
| 3832 | val = XCDR (cache); |
| 3833 | while (! NILP (val) |
| 3834 | && ! EQ (XCAR (XCAR (val)), driver_list->driver->type)) |
| 3835 | val = XCDR (val); |
| 3836 | font_assert (! NILP (val)); |
| 3837 | val = XCDR (XCAR (val)); |
| 3838 | if (XINT (XCAR (val)) == 0) |
| 3839 | { |
| 3840 | font_clear_cache (f, XCAR (val), driver_list->driver); |
| 3841 | XSETCDR (cache, XCDR (val)); |
| 3842 | } |
| 3843 | } |
| 3844 | } |
| 3845 | |
| 3846 | return Qnil; |
| 3847 | } |
| 3848 | |
| 3849 | /* The following three functions are still experimental. */ |
| 3850 | |
| 3851 | DEFUN ("font-make-gstring", Ffont_make_gstring, Sfont_make_gstring, 2, 2, 0, |
| 3852 | doc: /* Return a newly created g-string for FONT-OBJECT with NUM glyphs. |
| 3853 | FONT-OBJECT may be nil if it is not yet known. |
| 3854 | |
| 3855 | G-string is sequence of glyphs of a specific font, |
| 3856 | and is a vector of this form: |
| 3857 | [ HEADER GLYPH ... ] |
| 3858 | HEADER is a vector of this form: |
| 3859 | [FONT-OBJECT WIDTH LBEARING RBEARING ASCENT DESCENT] |
| 3860 | where |
| 3861 | FONT-OBJECT is a font-object for all glyphs in the g-string, |
| 3862 | WIDTH thru DESCENT are the metrics (in pixels) of the whole G-string. |
| 3863 | GLYPH is a vector of this form: |
| 3864 | [ FROM-IDX TO-IDX C CODE WIDTH LBEARING RBEARING ASCENT DESCENT |
| 3865 | [ [X-OFF Y-OFF WADJUST] | nil] ] |
| 3866 | where |
| 3867 | FROM-IDX and TO-IDX are used internally and should not be touched. |
| 3868 | C is the character of the glyph. |
| 3869 | CODE is the glyph-code of C in FONT-OBJECT. |
| 3870 | WIDTH thru DESCENT are the metrics (in pixels) of the glyph. |
| 3871 | X-OFF and Y-OFF are offests to the base position for the glyph. |
| 3872 | WADJUST is the adjustment to the normal width of the glyph. */) |
| 3873 | (font_object, num) |
| 3874 | Lisp_Object font_object, num; |
| 3875 | { |
| 3876 | Lisp_Object gstring, g; |
| 3877 | int len; |
| 3878 | int i; |
| 3879 | |
| 3880 | if (! NILP (font_object)) |
| 3881 | CHECK_FONT_OBJECT (font_object); |
| 3882 | CHECK_NATNUM (num); |
| 3883 | |
| 3884 | len = XINT (num) + 1; |
| 3885 | gstring = Fmake_vector (make_number (len), Qnil); |
| 3886 | g = Fmake_vector (make_number (6), Qnil); |
| 3887 | ASET (g, 0, font_object); |
| 3888 | ASET (gstring, 0, g); |
| 3889 | for (i = 1; i < len; i++) |
| 3890 | ASET (gstring, i, Fmake_vector (make_number (10), Qnil)); |
| 3891 | return gstring; |
| 3892 | } |
| 3893 | |
| 3894 | DEFUN ("font-fill-gstring", Ffont_fill_gstring, Sfont_fill_gstring, 4, 5, 0, |
| 3895 | doc: /* Fill in glyph-string GSTRING by characters for FONT-OBJECT. |
| 3896 | START and END specify the region to extract characters. |
| 3897 | If optional 5rd argument OBJECT is non-nil, it is a buffer or a string from |
| 3898 | where to extract characters. |
| 3899 | FONT-OBJECT may be nil if GSTRING already contains one. */) |
| 3900 | (gstring, font_object, start, end, object) |
| 3901 | Lisp_Object gstring, font_object, start, end, object; |
| 3902 | { |
| 3903 | int len, i, c; |
| 3904 | unsigned code; |
| 3905 | struct font *font; |
| 3906 | |
| 3907 | CHECK_VECTOR (gstring); |
| 3908 | if (NILP (font_object)) |
| 3909 | font_object = LGSTRING_FONT (gstring); |
| 3910 | font = XFONT_OBJECT (font_object); |
| 3911 | |
| 3912 | if (STRINGP (object)) |
| 3913 | { |
| 3914 | const unsigned char *p; |
| 3915 | |
| 3916 | CHECK_NATNUM (start); |
| 3917 | CHECK_NATNUM (end); |
| 3918 | if (XINT (start) > XINT (end) |
| 3919 | || XINT (end) > ASIZE (object) |
| 3920 | || XINT (end) - XINT (start) > LGSTRING_LENGTH (gstring)) |
| 3921 | args_out_of_range_3 (object, start, end); |
| 3922 | |
| 3923 | len = XINT (end) - XINT (start); |
| 3924 | p = SDATA (object) + string_char_to_byte (object, XINT (start)); |
| 3925 | for (i = 0; i < len; i++) |
| 3926 | { |
| 3927 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); |
| 3928 | /* Shut up GCC warning in comparison with |
| 3929 | MOST_POSITIVE_FIXNUM below. */ |
| 3930 | EMACS_INT cod; |
| 3931 | |
| 3932 | c = STRING_CHAR_ADVANCE (p); |
| 3933 | cod = code = font->driver->encode_char (font, c); |
| 3934 | if (cod > MOST_POSITIVE_FIXNUM || code == FONT_INVALID_CODE) |
| 3935 | break; |
| 3936 | LGLYPH_SET_FROM (g, i); |
| 3937 | LGLYPH_SET_TO (g, i); |
| 3938 | LGLYPH_SET_CHAR (g, c); |
| 3939 | LGLYPH_SET_CODE (g, code); |
| 3940 | } |
| 3941 | } |
| 3942 | else |
| 3943 | { |
| 3944 | int pos, pos_byte; |
| 3945 | |
| 3946 | if (! NILP (object)) |
| 3947 | Fset_buffer (object); |
| 3948 | validate_region (&start, &end); |
| 3949 | if (XINT (end) - XINT (start) > LGSTRING_LENGTH (gstring)) |
| 3950 | args_out_of_range (start, end); |
| 3951 | len = XINT (end) - XINT (start); |
| 3952 | pos = XINT (start); |
| 3953 | pos_byte = CHAR_TO_BYTE (pos); |
| 3954 | for (i = 0; i < len; i++) |
| 3955 | { |
| 3956 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); |
| 3957 | /* Shut up GCC warning in comparison with |
| 3958 | MOST_POSITIVE_FIXNUM below. */ |
| 3959 | EMACS_INT cod; |
| 3960 | |
| 3961 | FETCH_CHAR_ADVANCE (c, pos, pos_byte); |
| 3962 | cod = code = font->driver->encode_char (font, c); |
| 3963 | if (cod > MOST_POSITIVE_FIXNUM || code == FONT_INVALID_CODE) |
| 3964 | break; |
| 3965 | LGLYPH_SET_FROM (g, i); |
| 3966 | LGLYPH_SET_TO (g, i); |
| 3967 | LGLYPH_SET_CHAR (g, c); |
| 3968 | LGLYPH_SET_CODE (g, code); |
| 3969 | } |
| 3970 | } |
| 3971 | for (; i < LGSTRING_LENGTH (gstring); i++) |
| 3972 | LGSTRING_SET_GLYPH (gstring, i, Qnil); |
| 3973 | return Qnil; |
| 3974 | } |
| 3975 | |
| 3976 | DEFUN ("font-shape-text", Ffont_shape_text, Sfont_shape_text, 3, 4, 0, |
| 3977 | doc: /* Shape text between FROM and TO by FONT-OBJECT. |
| 3978 | If optional 4th argument STRING is non-nil, it is a string to shape, |
| 3979 | and FROM and TO are indices to the string. |
| 3980 | The value is the end position of the text that can be shaped by |
| 3981 | FONT-OBJECT. */) |
| 3982 | (from, to, font_object, string) |
| 3983 | Lisp_Object from, to, font_object, string; |
| 3984 | { |
| 3985 | struct font *font; |
| 3986 | struct font_metrics metrics; |
| 3987 | EMACS_INT start, end; |
| 3988 | Lisp_Object gstring, n; |
| 3989 | int len, i; |
| 3990 | |
| 3991 | if (! FONT_OBJECT_P (font_object)) |
| 3992 | return Qnil; |
| 3993 | font = XFONT_OBJECT (font_object); |
| 3994 | if (! font->driver->shape) |
| 3995 | return Qnil; |
| 3996 | |
| 3997 | if (NILP (string)) |
| 3998 | { |
| 3999 | validate_region (&from, &to); |
| 4000 | start = XFASTINT (from); |
| 4001 | end = XFASTINT (to); |
| 4002 | modify_region (current_buffer, start, end, 0); |
| 4003 | } |
| 4004 | else |
| 4005 | { |
| 4006 | CHECK_STRING (string); |
| 4007 | start = XINT (from); |
| 4008 | end = XINT (to); |
| 4009 | if (start < 0 || start > end || end > SCHARS (string)) |
| 4010 | args_out_of_range_3 (string, from, to); |
| 4011 | } |
| 4012 | |
| 4013 | len = end - start; |
| 4014 | gstring = Ffont_make_gstring (font_object, make_number (len)); |
| 4015 | Ffont_fill_gstring (gstring, font_object, from, to, string); |
| 4016 | |
| 4017 | /* Try at most three times with larger gstring each time. */ |
| 4018 | for (i = 0; i < 3; i++) |
| 4019 | { |
| 4020 | Lisp_Object args[2]; |
| 4021 | |
| 4022 | n = font->driver->shape (gstring); |
| 4023 | if (INTEGERP (n)) |
| 4024 | break; |
| 4025 | args[0] = gstring; |
| 4026 | args[1] = Fmake_vector (make_number (len), Qnil); |
| 4027 | gstring = Fvconcat (2, args); |
| 4028 | } |
| 4029 | if (! INTEGERP (n) || XINT (n) == 0) |
| 4030 | return Qnil; |
| 4031 | len = XINT (n); |
| 4032 | |
| 4033 | for (i = 0; i < len;) |
| 4034 | { |
| 4035 | Lisp_Object gstr; |
| 4036 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); |
| 4037 | EMACS_INT this_from = LGLYPH_FROM (g); |
| 4038 | EMACS_INT this_to = LGLYPH_TO (g) + 1; |
| 4039 | int j, k; |
| 4040 | int need_composition = 0; |
| 4041 | |
| 4042 | metrics.lbearing = LGLYPH_LBEARING (g); |
| 4043 | metrics.rbearing = LGLYPH_RBEARING (g); |
| 4044 | metrics.ascent = LGLYPH_ASCENT (g); |
| 4045 | metrics.descent = LGLYPH_DESCENT (g); |
| 4046 | if (NILP (LGLYPH_ADJUSTMENT (g))) |
| 4047 | { |
| 4048 | metrics.width = LGLYPH_WIDTH (g); |
| 4049 | if (LGLYPH_CHAR (g) == 0 || metrics.width == 0) |
| 4050 | need_composition = 1; |
| 4051 | } |
| 4052 | else |
| 4053 | { |
| 4054 | metrics.width = LGLYPH_WADJUST (g); |
| 4055 | metrics.lbearing += LGLYPH_XOFF (g); |
| 4056 | metrics.rbearing += LGLYPH_XOFF (g); |
| 4057 | metrics.ascent -= LGLYPH_YOFF (g); |
| 4058 | metrics.descent += LGLYPH_YOFF (g); |
| 4059 | need_composition = 1; |
| 4060 | } |
| 4061 | for (j = i + 1; j < len; j++) |
| 4062 | { |
| 4063 | int x; |
| 4064 | |
| 4065 | g = LGSTRING_GLYPH (gstring, j); |
| 4066 | if (this_from != LGLYPH_FROM (g)) |
| 4067 | break; |
| 4068 | need_composition = 1; |
| 4069 | x = metrics.width + LGLYPH_LBEARING (g) + LGLYPH_XOFF (g); |
| 4070 | if (metrics.lbearing > x) |
| 4071 | metrics.lbearing = x; |
| 4072 | x = metrics.width + LGLYPH_RBEARING (g) + LGLYPH_XOFF (g); |
| 4073 | if (metrics.rbearing < x) |
| 4074 | metrics.rbearing = x; |
| 4075 | x = LGLYPH_ASCENT (g) - LGLYPH_YOFF (g); |
| 4076 | if (metrics.ascent < x) |
| 4077 | metrics.ascent = x; |
| 4078 | x = LGLYPH_DESCENT (g) - LGLYPH_YOFF (g); |
| 4079 | if (metrics.descent < x) |
| 4080 | metrics.descent = x; |
| 4081 | if (NILP (LGLYPH_ADJUSTMENT (g))) |
| 4082 | metrics.width += LGLYPH_WIDTH (g); |
| 4083 | else |
| 4084 | metrics.width += LGLYPH_WADJUST (g); |
| 4085 | } |
| 4086 | |
| 4087 | if (need_composition) |
| 4088 | { |
| 4089 | gstr = Ffont_make_gstring (font_object, make_number (j - i)); |
| 4090 | LGSTRING_SET_WIDTH (gstr, metrics.width); |
| 4091 | LGSTRING_SET_LBEARING (gstr, metrics.lbearing); |
| 4092 | LGSTRING_SET_RBEARING (gstr, metrics.rbearing); |
| 4093 | LGSTRING_SET_ASCENT (gstr, metrics.ascent); |
| 4094 | LGSTRING_SET_DESCENT (gstr, metrics.descent); |
| 4095 | for (k = i; i < j; i++) |
| 4096 | { |
| 4097 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); |
| 4098 | |
| 4099 | LGLYPH_SET_FROM (g, LGLYPH_FROM (g) - this_from); |
| 4100 | LGLYPH_SET_TO (g, LGLYPH_TO (g) - this_from); |
| 4101 | LGSTRING_SET_GLYPH (gstr, i - k, LGSTRING_GLYPH (gstring, i)); |
| 4102 | } |
| 4103 | from = make_number (start + this_from); |
| 4104 | to = make_number (start + this_to); |
| 4105 | if (NILP (string)) |
| 4106 | Fcompose_region_internal (from, to, gstr, Qnil); |
| 4107 | else |
| 4108 | Fcompose_string_internal (string, from, to, gstr, Qnil); |
| 4109 | } |
| 4110 | else |
| 4111 | i = j; |
| 4112 | } |
| 4113 | |
| 4114 | return to; |
| 4115 | } |
| 4116 | |
| 4117 | #if 0 |
| 4118 | |
| 4119 | DEFUN ("font-drive-otf", Ffont_drive_otf, Sfont_drive_otf, 6, 6, 0, |
| 4120 | doc: /* Apply OpenType features on glyph-string GSTRING-IN. |
| 4121 | OTF-FEATURES specifies which features to apply in this format: |
| 4122 | (SCRIPT LANGSYS GSUB GPOS) |
| 4123 | where |
| 4124 | SCRIPT is a symbol specifying a script tag of OpenType, |
| 4125 | LANGSYS is a symbol specifying a langsys tag of OpenType, |
| 4126 | GSUB and GPOS, if non-nil, are lists of symbols specifying feature tags. |
| 4127 | |
| 4128 | If LANGYS is nil, the default langsys is selected. |
| 4129 | |
| 4130 | The features are applied in the order they appear in the list. The |
| 4131 | symbol `*' means to apply all available features not present in this |
| 4132 | list, and the remaining features are ignored. For instance, (vatu |
| 4133 | pstf * haln) is to apply vatu and pstf in this order, then to apply |
| 4134 | all available features other than vatu, pstf, and haln. |
| 4135 | |
| 4136 | The features are applied to the glyphs in the range FROM and TO of |
| 4137 | the glyph-string GSTRING-IN. |
| 4138 | |
| 4139 | If some feature is actually applicable, the resulting glyphs are |
| 4140 | produced in the glyph-string GSTRING-OUT from the index INDEX. In |
| 4141 | this case, the value is the number of produced glyphs. |
| 4142 | |
| 4143 | If no feature is applicable, no glyph is produced in GSTRING-OUT, and |
| 4144 | the value is 0. |
| 4145 | |
| 4146 | If GSTRING-OUT is too short to hold produced glyphs, no glyphs are |
| 4147 | produced in GSTRING-OUT, and the value is nil. |
| 4148 | |
| 4149 | See the documentation of `font-make-gstring' for the format of |
| 4150 | glyph-string. */) |
| 4151 | (otf_features, gstring_in, from, to, gstring_out, index) |
| 4152 | Lisp_Object otf_features, gstring_in, from, to, gstring_out, index; |
| 4153 | { |
| 4154 | Lisp_Object font_object = LGSTRING_FONT (gstring_in); |
| 4155 | Lisp_Object val; |
| 4156 | struct font *font; |
| 4157 | int len, num; |
| 4158 | |
| 4159 | check_otf_features (otf_features); |
| 4160 | CHECK_FONT_OBJECT (font_object); |
| 4161 | font = XFONT_OBJECT (font_object); |
| 4162 | if (! font->driver->otf_drive) |
| 4163 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4164 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4165 | CHECK_CONS (otf_features); |
| 4166 | CHECK_SYMBOL (XCAR (otf_features)); |
| 4167 | val = XCDR (otf_features); |
| 4168 | CHECK_SYMBOL (XCAR (val)); |
| 4169 | val = XCDR (otf_features); |
| 4170 | if (! NILP (val)) |
| 4171 | CHECK_CONS (val); |
| 4172 | len = check_gstring (gstring_in); |
| 4173 | CHECK_VECTOR (gstring_out); |
| 4174 | CHECK_NATNUM (from); |
| 4175 | CHECK_NATNUM (to); |
| 4176 | CHECK_NATNUM (index); |
| 4177 | |
| 4178 | if (XINT (from) >= XINT (to) || XINT (to) > len) |
| 4179 | args_out_of_range_3 (from, to, make_number (len)); |
| 4180 | if (XINT (index) >= ASIZE (gstring_out)) |
| 4181 | args_out_of_range (index, make_number (ASIZE (gstring_out))); |
| 4182 | num = font->driver->otf_drive (font, otf_features, |
| 4183 | gstring_in, XINT (from), XINT (to), |
| 4184 | gstring_out, XINT (index), 0); |
| 4185 | if (num < 0) |
| 4186 | return Qnil; |
| 4187 | return make_number (num); |
| 4188 | } |
| 4189 | |
| 4190 | DEFUN ("font-otf-alternates", Ffont_otf_alternates, Sfont_otf_alternates, |
| 4191 | 3, 3, 0, |
| 4192 | doc: /* Return a list of alternate glyphs of CHARACTER in FONT-OBJECT. |
| 4193 | OTF-FEATURES specifies which features of the font FONT-OBJECT to apply |
| 4194 | in this format: |
| 4195 | (SCRIPT LANGSYS FEATURE ...) |
| 4196 | See the documentation of `font-drive-otf' for more detail. |
| 4197 | |
| 4198 | The value is a list of cons cells of the format (GLYPH-ID . CHARACTER), |
| 4199 | where GLYPH-ID is a glyph index of the font, and CHARACTER is a |
| 4200 | character code corresponding to the glyph or nil if there's no |
| 4201 | corresponding character. */) |
| 4202 | (font_object, character, otf_features) |
| 4203 | Lisp_Object font_object, character, otf_features; |
| 4204 | { |
| 4205 | struct font *font; |
| 4206 | Lisp_Object gstring_in, gstring_out, g; |
| 4207 | Lisp_Object alternates; |
| 4208 | int i, num; |
| 4209 | |
| 4210 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4211 | if (! font->driver->otf_drive) |
| 4212 | error ("Font backend %s can't drive OpenType GSUB table", |
| 4213 | SDATA (SYMBOL_NAME (font->driver->type))); |
| 4214 | CHECK_CHARACTER (character); |
| 4215 | CHECK_CONS (otf_features); |
| 4216 | |
| 4217 | gstring_in = Ffont_make_gstring (font_object, make_number (1)); |
| 4218 | g = LGSTRING_GLYPH (gstring_in, 0); |
| 4219 | LGLYPH_SET_CHAR (g, XINT (character)); |
| 4220 | gstring_out = Ffont_make_gstring (font_object, make_number (10)); |
| 4221 | while ((num = font->driver->otf_drive (font, otf_features, gstring_in, 0, 1, |
| 4222 | gstring_out, 0, 1)) < 0) |
| 4223 | gstring_out = Ffont_make_gstring (font_object, |
| 4224 | make_number (ASIZE (gstring_out) * 2)); |
| 4225 | alternates = Qnil; |
| 4226 | for (i = 0; i < num; i++) |
| 4227 | { |
| 4228 | Lisp_Object g = LGSTRING_GLYPH (gstring_out, i); |
| 4229 | int c = LGLYPH_CHAR (g); |
| 4230 | unsigned code = LGLYPH_CODE (g); |
| 4231 | |
| 4232 | alternates = Fcons (Fcons (make_number (code), |
| 4233 | c > 0 ? make_number (c) : Qnil), |
| 4234 | alternates); |
| 4235 | } |
| 4236 | return Fnreverse (alternates); |
| 4237 | } |
| 4238 | #endif /* 0 */ |
| 4239 | |
| 4240 | #ifdef FONT_DEBUG |
| 4241 | |
| 4242 | DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0, |
| 4243 | doc: /* Open FONT-ENTITY. */) |
| 4244 | (font_entity, size, frame) |
| 4245 | Lisp_Object font_entity; |
| 4246 | Lisp_Object size; |
| 4247 | Lisp_Object frame; |
| 4248 | { |
| 4249 | int isize; |
| 4250 | |
| 4251 | CHECK_FONT_ENTITY (font_entity); |
| 4252 | if (NILP (frame)) |
| 4253 | frame = selected_frame; |
| 4254 | CHECK_LIVE_FRAME (frame); |
| 4255 | |
| 4256 | if (NILP (size)) |
| 4257 | isize = XINT (AREF (font_entity, FONT_SIZE_INDEX)); |
| 4258 | else |
| 4259 | { |
| 4260 | CHECK_NUMBER_OR_FLOAT (size); |
| 4261 | if (FLOATP (size)) |
| 4262 | isize = POINT_TO_PIXEL (- isize, XFRAME (frame)->resy); |
| 4263 | else |
| 4264 | isize = XINT (size); |
| 4265 | if (isize == 0) |
| 4266 | isize = 120; |
| 4267 | } |
| 4268 | return font_open_entity (XFRAME (frame), font_entity, isize); |
| 4269 | } |
| 4270 | |
| 4271 | DEFUN ("close-font", Fclose_font, Sclose_font, 1, 2, 0, |
| 4272 | doc: /* Close FONT-OBJECT. */) |
| 4273 | (font_object, frame) |
| 4274 | Lisp_Object font_object, frame; |
| 4275 | { |
| 4276 | CHECK_FONT_OBJECT (font_object); |
| 4277 | if (NILP (frame)) |
| 4278 | frame = selected_frame; |
| 4279 | CHECK_LIVE_FRAME (frame); |
| 4280 | font_close_object (XFRAME (frame), font_object); |
| 4281 | return Qnil; |
| 4282 | } |
| 4283 | |
| 4284 | DEFUN ("query-font", Fquery_font, Squery_font, 1, 1, 0, |
| 4285 | doc: /* Return information about FONT-OBJECT. |
| 4286 | The value is a vector: |
| 4287 | [ NAME FILENAME PIXEL-SIZE SIZE ASCENT DESCENT SPACE-WIDTH AVERAGE-WIDTH |
| 4288 | CAPABILITY ] |
| 4289 | |
| 4290 | NAME is a string of the font name (or nil if the font backend doesn't |
| 4291 | provide a name). |
| 4292 | |
| 4293 | FILENAME is a string of the font file (or nil if the font backend |
| 4294 | doesn't provide a file name). |
| 4295 | |
| 4296 | PIXEL-SIZE is a pixel size by which the font is opened. |
| 4297 | |
| 4298 | SIZE is a maximum advance width of the font in pixels. |
| 4299 | |
| 4300 | ASCENT, DESCENT, SPACE-WIDTH, AVERAGE-WIDTH are metrics of the font in |
| 4301 | pixels. |
| 4302 | |
| 4303 | CAPABILITY is a list whose first element is a symbol representing the |
| 4304 | font format \(x, opentype, truetype, type1, pcf, or bdf) and the |
| 4305 | remaining elements describe the details of the font capability. |
| 4306 | |
| 4307 | If the font is OpenType font, the form of the list is |
| 4308 | \(opentype GSUB GPOS) |
| 4309 | where GSUB shows which "GSUB" features the font supports, and GPOS |
| 4310 | shows which "GPOS" features the font supports. Both GSUB and GPOS are |
| 4311 | lists of the format: |
| 4312 | \((SCRIPT (LANGSYS FEATURE ...) ...) ...) |
| 4313 | |
| 4314 | If the font is not OpenType font, currently the length of the form is |
| 4315 | one. |
| 4316 | |
| 4317 | SCRIPT is a symbol representing OpenType script tag. |
| 4318 | |
| 4319 | LANGSYS is a symbol representing OpenType langsys tag, or nil |
| 4320 | representing the default langsys. |
| 4321 | |
| 4322 | FEATURE is a symbol representing OpenType feature tag. |
| 4323 | |
| 4324 | If the font is not OpenType font, CAPABILITY is nil. */) |
| 4325 | (font_object) |
| 4326 | Lisp_Object font_object; |
| 4327 | { |
| 4328 | struct font *font; |
| 4329 | Lisp_Object val; |
| 4330 | |
| 4331 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4332 | |
| 4333 | val = Fmake_vector (make_number (9), Qnil); |
| 4334 | ASET (val, 0, AREF (font_object, FONT_NAME_INDEX)); |
| 4335 | ASET (val, 1, AREF (font_object, FONT_FILE_INDEX)); |
| 4336 | ASET (val, 2, make_number (font->pixel_size)); |
| 4337 | ASET (val, 3, make_number (font->max_width)); |
| 4338 | ASET (val, 4, make_number (font->ascent)); |
| 4339 | ASET (val, 5, make_number (font->descent)); |
| 4340 | ASET (val, 6, make_number (font->space_width)); |
| 4341 | ASET (val, 7, make_number (font->average_width)); |
| 4342 | if (font->driver->otf_capability) |
| 4343 | ASET (val, 8, Fcons (Qopentype, font->driver->otf_capability (font))); |
| 4344 | return val; |
| 4345 | } |
| 4346 | |
| 4347 | DEFUN ("get-font-glyphs", Fget_font_glyphs, Sget_font_glyphs, 2, 2, 0, |
| 4348 | doc: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING. |
| 4349 | Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */) |
| 4350 | (font_object, string) |
| 4351 | Lisp_Object font_object, string; |
| 4352 | { |
| 4353 | struct font *font; |
| 4354 | int i, len; |
| 4355 | Lisp_Object vec; |
| 4356 | |
| 4357 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4358 | CHECK_STRING (string); |
| 4359 | len = SCHARS (string); |
| 4360 | vec = Fmake_vector (make_number (len), Qnil); |
| 4361 | for (i = 0; i < len; i++) |
| 4362 | { |
| 4363 | Lisp_Object ch = Faref (string, make_number (i)); |
| 4364 | Lisp_Object val; |
| 4365 | int c = XINT (ch); |
| 4366 | unsigned code; |
| 4367 | EMACS_INT cod; |
| 4368 | struct font_metrics metrics; |
| 4369 | |
| 4370 | cod = code = font->driver->encode_char (font, c); |
| 4371 | if (code == FONT_INVALID_CODE) |
| 4372 | continue; |
| 4373 | val = Fmake_vector (make_number (6), Qnil); |
| 4374 | if (cod <= MOST_POSITIVE_FIXNUM) |
| 4375 | ASET (val, 0, make_number (code)); |
| 4376 | else |
| 4377 | ASET (val, 0, Fcons (make_number (code >> 16), |
| 4378 | make_number (code & 0xFFFF))); |
| 4379 | font->driver->text_extents (font, &code, 1, &metrics); |
| 4380 | ASET (val, 1, make_number (metrics.lbearing)); |
| 4381 | ASET (val, 2, make_number (metrics.rbearing)); |
| 4382 | ASET (val, 3, make_number (metrics.width)); |
| 4383 | ASET (val, 4, make_number (metrics.ascent)); |
| 4384 | ASET (val, 5, make_number (metrics.descent)); |
| 4385 | ASET (vec, i, val); |
| 4386 | } |
| 4387 | return vec; |
| 4388 | } |
| 4389 | |
| 4390 | DEFUN ("font-match-p", Ffont_match_p, Sfont_match_p, 2, 2, 0, |
| 4391 | doc: /* Return t if and only if font-spec SPEC matches with FONT. |
| 4392 | FONT is a font-spec, font-entity, or font-object. */) |
| 4393 | (spec, font) |
| 4394 | Lisp_Object spec, font; |
| 4395 | { |
| 4396 | CHECK_FONT_SPEC (spec); |
| 4397 | CHECK_FONT (font); |
| 4398 | |
| 4399 | return (font_match_p (spec, font) ? Qt : Qnil); |
| 4400 | } |
| 4401 | |
| 4402 | DEFUN ("font-at", Ffont_at, Sfont_at, 1, 3, 0, |
| 4403 | doc: /* Return a font-object for displaying a character at POSITION. |
| 4404 | Optional second arg WINDOW, if non-nil, is a window displaying |
| 4405 | the current buffer. It defaults to the currently selected window. */) |
| 4406 | (position, window, string) |
| 4407 | Lisp_Object position, window, string; |
| 4408 | { |
| 4409 | struct window *w; |
| 4410 | EMACS_INT pos; |
| 4411 | |
| 4412 | if (NILP (string)) |
| 4413 | { |
| 4414 | CHECK_NUMBER_COERCE_MARKER (position); |
| 4415 | pos = XINT (position); |
| 4416 | if (pos < BEGV || pos >= ZV) |
| 4417 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); |
| 4418 | } |
| 4419 | else |
| 4420 | { |
| 4421 | CHECK_NUMBER (position); |
| 4422 | CHECK_STRING (string); |
| 4423 | pos = XINT (position); |
| 4424 | if (pos < 0 || pos >= SCHARS (string)) |
| 4425 | args_out_of_range (string, position); |
| 4426 | } |
| 4427 | if (NILP (window)) |
| 4428 | window = selected_window; |
| 4429 | CHECK_LIVE_WINDOW (window); |
| 4430 | w = XWINDOW (window); |
| 4431 | |
| 4432 | return font_at (-1, pos, NULL, w, string); |
| 4433 | } |
| 4434 | |
| 4435 | #if 0 |
| 4436 | DEFUN ("draw-string", Fdraw_string, Sdraw_string, 2, 2, 0, |
| 4437 | doc: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame. |
| 4438 | The value is a number of glyphs drawn. |
| 4439 | Type C-l to recover what previously shown. */) |
| 4440 | (font_object, string) |
| 4441 | Lisp_Object font_object, string; |
| 4442 | { |
| 4443 | Lisp_Object frame = selected_frame; |
| 4444 | FRAME_PTR f = XFRAME (frame); |
| 4445 | struct font *font; |
| 4446 | struct face *face; |
| 4447 | int i, len, width; |
| 4448 | unsigned *code; |
| 4449 | |
| 4450 | CHECK_FONT_GET_OBJECT (font_object, font); |
| 4451 | CHECK_STRING (string); |
| 4452 | len = SCHARS (string); |
| 4453 | code = alloca (sizeof (unsigned) * len); |
| 4454 | for (i = 0; i < len; i++) |
| 4455 | { |
| 4456 | Lisp_Object ch = Faref (string, make_number (i)); |
| 4457 | Lisp_Object val; |
| 4458 | int c = XINT (ch); |
| 4459 | |
| 4460 | code[i] = font->driver->encode_char (font, c); |
| 4461 | if (code[i] == FONT_INVALID_CODE) |
| 4462 | break; |
| 4463 | } |
| 4464 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4465 | face->fontp = font; |
| 4466 | if (font->driver->prepare_face) |
| 4467 | font->driver->prepare_face (f, face); |
| 4468 | width = font->driver->text_extents (font, code, i, NULL); |
| 4469 | len = font->driver->draw_text (f, face, 0, font->ascent, code, i, width); |
| 4470 | if (font->driver->done_face) |
| 4471 | font->driver->done_face (f, face); |
| 4472 | face->fontp = NULL; |
| 4473 | return make_number (len); |
| 4474 | } |
| 4475 | #endif |
| 4476 | |
| 4477 | #endif /* FONT_DEBUG */ |
| 4478 | |
| 4479 | #ifdef HAVE_WINDOW_SYSTEM |
| 4480 | |
| 4481 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, |
| 4482 | doc: /* Return information about a font named NAME on frame FRAME. |
| 4483 | If FRAME is omitted or nil, use the selected frame. |
| 4484 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE, |
| 4485 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT, |
| 4486 | where |
| 4487 | OPENED-NAME is the name used for opening the font, |
| 4488 | FULL-NAME is the full name of the font, |
| 4489 | SIZE is the maximum bound width of the font, |
| 4490 | HEIGHT is the height of the font, |
| 4491 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline, |
| 4492 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling |
| 4493 | how to compose characters. |
| 4494 | If the named font is not yet loaded, return nil. */) |
| 4495 | (name, frame) |
| 4496 | Lisp_Object name, frame; |
| 4497 | { |
| 4498 | FRAME_PTR f; |
| 4499 | struct font *font; |
| 4500 | Lisp_Object info; |
| 4501 | Lisp_Object font_object; |
| 4502 | |
| 4503 | (*check_window_system_func) (); |
| 4504 | |
| 4505 | if (! FONTP (name)) |
| 4506 | CHECK_STRING (name); |
| 4507 | if (NILP (frame)) |
| 4508 | frame = selected_frame; |
| 4509 | CHECK_LIVE_FRAME (frame); |
| 4510 | f = XFRAME (frame); |
| 4511 | |
| 4512 | if (STRINGP (name)) |
| 4513 | { |
| 4514 | int fontset = fs_query_fontset (name, 0); |
| 4515 | |
| 4516 | if (fontset >= 0) |
| 4517 | name = fontset_ascii (fontset); |
| 4518 | font_object = font_open_by_name (f, (char *) SDATA (name)); |
| 4519 | } |
| 4520 | else if (FONT_OBJECT_P (name)) |
| 4521 | font_object = name; |
| 4522 | else if (FONT_ENTITY_P (name)) |
| 4523 | font_object = font_open_entity (f, name, 0); |
| 4524 | else |
| 4525 | { |
| 4526 | struct face *face = FACE_FROM_ID (f, DEFAULT_FACE_ID); |
| 4527 | Lisp_Object entity = font_matching_entity (f, face->lface, name); |
| 4528 | |
| 4529 | font_object = ! NILP (entity) ? font_open_entity (f, entity, 0) : Qnil; |
| 4530 | } |
| 4531 | if (NILP (font_object)) |
| 4532 | return Qnil; |
| 4533 | font = XFONT_OBJECT (font_object); |
| 4534 | |
| 4535 | info = Fmake_vector (make_number (7), Qnil); |
| 4536 | XVECTOR (info)->contents[0] = AREF (font_object, FONT_NAME_INDEX); |
| 4537 | XVECTOR (info)->contents[1] = AREF (font_object, FONT_NAME_INDEX); |
| 4538 | XVECTOR (info)->contents[2] = make_number (font->pixel_size); |
| 4539 | XVECTOR (info)->contents[3] = make_number (font->height); |
| 4540 | XVECTOR (info)->contents[4] = make_number (font->baseline_offset); |
| 4541 | XVECTOR (info)->contents[5] = make_number (font->relative_compose); |
| 4542 | XVECTOR (info)->contents[6] = make_number (font->default_ascent); |
| 4543 | |
| 4544 | #if 0 |
| 4545 | /* As font_object is still in FONT_OBJLIST of the entity, we can't |
| 4546 | close it now. Perhaps, we should manage font-objects |
| 4547 | by `reference-count'. */ |
| 4548 | font_close_object (f, font_object); |
| 4549 | #endif |
| 4550 | return info; |
| 4551 | } |
| 4552 | #endif |
| 4553 | |
| 4554 | \f |
| 4555 | #define BUILD_STYLE_TABLE(TBL) \ |
| 4556 | build_style_table ((TBL), sizeof TBL / sizeof (struct table_entry)) |
| 4557 | |
| 4558 | static Lisp_Object |
| 4559 | build_style_table (entry, nelement) |
| 4560 | struct table_entry *entry; |
| 4561 | int nelement; |
| 4562 | { |
| 4563 | int i, j; |
| 4564 | Lisp_Object table, elt; |
| 4565 | |
| 4566 | table = Fmake_vector (make_number (nelement), Qnil); |
| 4567 | for (i = 0; i < nelement; i++) |
| 4568 | { |
| 4569 | for (j = 0; entry[i].names[j]; j++); |
| 4570 | elt = Fmake_vector (make_number (j + 1), Qnil); |
| 4571 | ASET (elt, 0, make_number (entry[i].numeric)); |
| 4572 | for (j = 0; entry[i].names[j]; j++) |
| 4573 | ASET (elt, j + 1, intern (entry[i].names[j])); |
| 4574 | ASET (table, i, elt); |
| 4575 | } |
| 4576 | return table; |
| 4577 | } |
| 4578 | |
| 4579 | static Lisp_Object Vfont_log; |
| 4580 | static int font_log_env_checked; |
| 4581 | |
| 4582 | void |
| 4583 | font_add_log (action, arg, result) |
| 4584 | char *action; |
| 4585 | Lisp_Object arg, result; |
| 4586 | { |
| 4587 | Lisp_Object tail, val; |
| 4588 | int i; |
| 4589 | |
| 4590 | if (! font_log_env_checked) |
| 4591 | { |
| 4592 | Vfont_log = egetenv ("EMACS_FONT_LOG") ? Qnil : Qt; |
| 4593 | font_log_env_checked = 1; |
| 4594 | } |
| 4595 | if (EQ (Vfont_log, Qt)) |
| 4596 | return; |
| 4597 | if (FONTP (arg)) |
| 4598 | arg = Ffont_xlfd_name (arg, Qt); |
| 4599 | if (FONTP (result)) |
| 4600 | result = Ffont_xlfd_name (result, Qt); |
| 4601 | else if (CONSP (result)) |
| 4602 | { |
| 4603 | result = Fcopy_sequence (result); |
| 4604 | for (tail = result; CONSP (tail); tail = XCDR (tail)) |
| 4605 | { |
| 4606 | val = XCAR (tail); |
| 4607 | if (FONTP (val)) |
| 4608 | val = Ffont_xlfd_name (val, Qt); |
| 4609 | XSETCAR (tail, val); |
| 4610 | } |
| 4611 | } |
| 4612 | else if (VECTORP (result)) |
| 4613 | { |
| 4614 | result = Fcopy_sequence (result); |
| 4615 | for (i = 0; i < ASIZE (result); i++) |
| 4616 | { |
| 4617 | val = AREF (result, i); |
| 4618 | if (FONTP (val)) |
| 4619 | val = Ffont_xlfd_name (val, Qt); |
| 4620 | ASET (result, i, val); |
| 4621 | } |
| 4622 | } |
| 4623 | Vfont_log = Fcons (list3 (intern (action), arg, result), Vfont_log); |
| 4624 | } |
| 4625 | |
| 4626 | extern void syms_of_ftfont P_ (()); |
| 4627 | extern void syms_of_xfont P_ (()); |
| 4628 | extern void syms_of_xftfont P_ (()); |
| 4629 | extern void syms_of_ftxfont P_ (()); |
| 4630 | extern void syms_of_bdffont P_ (()); |
| 4631 | extern void syms_of_w32font P_ (()); |
| 4632 | extern void syms_of_atmfont P_ (()); |
| 4633 | |
| 4634 | void |
| 4635 | syms_of_font () |
| 4636 | { |
| 4637 | sort_shift_bits[FONT_TYPE_INDEX] = 0; |
| 4638 | sort_shift_bits[FONT_SLANT_INDEX] = 2; |
| 4639 | sort_shift_bits[FONT_WEIGHT_INDEX] = 9; |
| 4640 | sort_shift_bits[FONT_SIZE_INDEX] = 16; |
| 4641 | sort_shift_bits[FONT_WIDTH_INDEX] = 23; |
| 4642 | /* Note that the other elements in sort_shift_bits are not used. */ |
| 4643 | |
| 4644 | staticpro (&font_charset_alist); |
| 4645 | font_charset_alist = Qnil; |
| 4646 | |
| 4647 | DEFSYM (Qfont_spec, "font-spec"); |
| 4648 | DEFSYM (Qfont_entity, "font-entity"); |
| 4649 | DEFSYM (Qfont_object, "font-object"); |
| 4650 | |
| 4651 | DEFSYM (Qopentype, "opentype"); |
| 4652 | |
| 4653 | DEFSYM (Qascii_0, "ascii-0"); |
| 4654 | DEFSYM (Qiso8859_1, "iso8859-1"); |
| 4655 | DEFSYM (Qiso10646_1, "iso10646-1"); |
| 4656 | DEFSYM (Qunicode_bmp, "unicode-bmp"); |
| 4657 | DEFSYM (Qunicode_sip, "unicode-sip"); |
| 4658 | |
| 4659 | DEFSYM (QCotf, ":otf"); |
| 4660 | DEFSYM (QClang, ":lang"); |
| 4661 | DEFSYM (QCscript, ":script"); |
| 4662 | DEFSYM (QCantialias, ":antialias"); |
| 4663 | |
| 4664 | DEFSYM (QCfoundry, ":foundry"); |
| 4665 | DEFSYM (QCadstyle, ":adstyle"); |
| 4666 | DEFSYM (QCregistry, ":registry"); |
| 4667 | DEFSYM (QCspacing, ":spacing"); |
| 4668 | DEFSYM (QCdpi, ":dpi"); |
| 4669 | DEFSYM (QCscalable, ":scalable"); |
| 4670 | DEFSYM (QCavgwidth, ":avgwidth"); |
| 4671 | DEFSYM (QCfont_entity, ":font-entity"); |
| 4672 | DEFSYM (QCfc_unknown_spec, ":fc-unknown-spec"); |
| 4673 | |
| 4674 | DEFSYM (Qc, "c"); |
| 4675 | DEFSYM (Qm, "m"); |
| 4676 | DEFSYM (Qp, "p"); |
| 4677 | DEFSYM (Qd, "d"); |
| 4678 | |
| 4679 | staticpro (&null_vector); |
| 4680 | null_vector = Fmake_vector (make_number (0), Qnil); |
| 4681 | |
| 4682 | staticpro (&scratch_font_spec); |
| 4683 | scratch_font_spec = Ffont_spec (0, NULL); |
| 4684 | staticpro (&scratch_font_prefer); |
| 4685 | scratch_font_prefer = Ffont_spec (0, NULL); |
| 4686 | |
| 4687 | #if 0 |
| 4688 | #ifdef HAVE_LIBOTF |
| 4689 | staticpro (&otf_list); |
| 4690 | otf_list = Qnil; |
| 4691 | #endif /* HAVE_LIBOTF */ |
| 4692 | #endif /* 0 */ |
| 4693 | |
| 4694 | defsubr (&Sfontp); |
| 4695 | defsubr (&Sfont_spec); |
| 4696 | defsubr (&Sfont_get); |
| 4697 | defsubr (&Sfont_put); |
| 4698 | defsubr (&Slist_fonts); |
| 4699 | defsubr (&Sfont_family_list); |
| 4700 | defsubr (&Sfind_font); |
| 4701 | defsubr (&Sfont_xlfd_name); |
| 4702 | defsubr (&Sclear_font_cache); |
| 4703 | defsubr (&Sfont_make_gstring); |
| 4704 | defsubr (&Sfont_fill_gstring); |
| 4705 | defsubr (&Sfont_shape_text); |
| 4706 | #if 0 |
| 4707 | defsubr (&Sfont_drive_otf); |
| 4708 | defsubr (&Sfont_otf_alternates); |
| 4709 | #endif /* 0 */ |
| 4710 | |
| 4711 | #ifdef FONT_DEBUG |
| 4712 | defsubr (&Sopen_font); |
| 4713 | defsubr (&Sclose_font); |
| 4714 | defsubr (&Squery_font); |
| 4715 | defsubr (&Sget_font_glyphs); |
| 4716 | defsubr (&Sfont_match_p); |
| 4717 | defsubr (&Sfont_at); |
| 4718 | #if 0 |
| 4719 | defsubr (&Sdraw_string); |
| 4720 | #endif |
| 4721 | #endif /* FONT_DEBUG */ |
| 4722 | #ifdef HAVE_WINDOW_SYSTEM |
| 4723 | defsubr (&Sfont_info); |
| 4724 | #endif |
| 4725 | |
| 4726 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, |
| 4727 | doc: /* |
| 4728 | Alist of fontname patterns vs the corresponding encoding and repertory info. |
| 4729 | Each element looks like (REGEXP . (ENCODING . REPERTORY)), |
| 4730 | where ENCODING is a charset or a char-table, |
| 4731 | and REPERTORY is a charset, a char-table, or nil. |
| 4732 | |
| 4733 | If ENCODING and REPERTORY are the same, the element can have the form |
| 4734 | \(REGEXP . ENCODING). |
| 4735 | |
| 4736 | ENCODING is for converting a character to a glyph code of the font. |
| 4737 | If ENCODING is a charset, encoding a character by the charset gives |
| 4738 | the corresponding glyph code. If ENCODING is a char-table, looking up |
| 4739 | the table by a character gives the corresponding glyph code. |
| 4740 | |
| 4741 | REPERTORY specifies a repertory of characters supported by the font. |
| 4742 | If REPERTORY is a charset, all characters beloging to the charset are |
| 4743 | supported. If REPERTORY is a char-table, all characters who have a |
| 4744 | non-nil value in the table are supported. If REPERTORY is nil, Emacs |
| 4745 | gets the repertory information by an opened font and ENCODING. */); |
| 4746 | Vfont_encoding_alist = Qnil; |
| 4747 | |
| 4748 | DEFVAR_LISP_NOPRO ("font-weight-table", &Vfont_weight_table, |
| 4749 | doc: /* Vector of valid font weight values. |
| 4750 | Each element has the form: |
| 4751 | [NUMERIC-VALUE SYMBOLIC-NAME ALIAS-NAME ...] |
| 4752 | NUMERIC-VALUE is an integer, and SYMBOLIC-NAME and ALIAS-NAME are symbols. */); |
| 4753 | Vfont_weight_table = BUILD_STYLE_TABLE (weight_table); |
| 4754 | |
| 4755 | DEFVAR_LISP_NOPRO ("font-slant-table", &Vfont_slant_table, |
| 4756 | doc: /* Vector of font slant symbols vs the corresponding numeric values. |
| 4757 | See `font-weight-table' for the format of the vector. */); |
| 4758 | Vfont_slant_table = BUILD_STYLE_TABLE (slant_table); |
| 4759 | |
| 4760 | DEFVAR_LISP_NOPRO ("font-width-table", &Vfont_width_table, |
| 4761 | doc: /* Alist of font width symbols vs the corresponding numeric values. |
| 4762 | See `font-weight-table' for the format of the vector. */); |
| 4763 | Vfont_width_table = BUILD_STYLE_TABLE (width_table); |
| 4764 | |
| 4765 | staticpro (&font_style_table); |
| 4766 | font_style_table = Fmake_vector (make_number (3), Qnil); |
| 4767 | ASET (font_style_table, 0, Vfont_weight_table); |
| 4768 | ASET (font_style_table, 1, Vfont_slant_table); |
| 4769 | ASET (font_style_table, 2, Vfont_width_table); |
| 4770 | |
| 4771 | DEFVAR_LISP ("font-log", &Vfont_log, doc: /* |
| 4772 | *Logging list of font related actions and results. |
| 4773 | The value t means to suppress the logging. |
| 4774 | The initial value is set to nil if the environment variable |
| 4775 | EMACS_FONT_LOG is set. Otherwise, it is set to t. */); |
| 4776 | Vfont_log = Qnil; |
| 4777 | |
| 4778 | #ifdef HAVE_WINDOW_SYSTEM |
| 4779 | #ifdef HAVE_FREETYPE |
| 4780 | syms_of_ftfont (); |
| 4781 | #ifdef HAVE_X_WINDOWS |
| 4782 | syms_of_xfont (); |
| 4783 | syms_of_ftxfont (); |
| 4784 | #ifdef HAVE_XFT |
| 4785 | syms_of_xftfont (); |
| 4786 | #endif /* HAVE_XFT */ |
| 4787 | #endif /* HAVE_X_WINDOWS */ |
| 4788 | #else /* not HAVE_FREETYPE */ |
| 4789 | #ifdef HAVE_X_WINDOWS |
| 4790 | syms_of_xfont (); |
| 4791 | #endif /* HAVE_X_WINDOWS */ |
| 4792 | #endif /* not HAVE_FREETYPE */ |
| 4793 | #ifdef HAVE_BDFFONT |
| 4794 | syms_of_bdffont (); |
| 4795 | #endif /* HAVE_BDFFONT */ |
| 4796 | #ifdef WINDOWSNT |
| 4797 | syms_of_w32font (); |
| 4798 | #endif /* WINDOWSNT */ |
| 4799 | #ifdef MAC_OS |
| 4800 | syms_of_atmfont (); |
| 4801 | #endif /* MAC_OS */ |
| 4802 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 4803 | } |
| 4804 | |
| 4805 | /* arch-tag: 74c9475d-5976-4c93-a327-942ae3072846 |
| 4806 | (do not change this comment) */ |