| 1 | /* xfont.c -- X core font driver. |
| 2 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
| 3 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 |
| 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 <X11/Xlib.h> |
| 25 | |
| 26 | #include "lisp.h" |
| 27 | #include "dispextern.h" |
| 28 | #include "xterm.h" |
| 29 | #include "frame.h" |
| 30 | #include "blockinput.h" |
| 31 | #include "character.h" |
| 32 | #include "charset.h" |
| 33 | #include "fontset.h" |
| 34 | #include "font.h" |
| 35 | #include "ccl.h" |
| 36 | |
| 37 | \f |
| 38 | /* X core font driver. */ |
| 39 | |
| 40 | struct xfont_info |
| 41 | { |
| 42 | struct font font; |
| 43 | Display *display; |
| 44 | XFontStruct *xfont; |
| 45 | unsigned x_display_id; |
| 46 | }; |
| 47 | |
| 48 | /* Prototypes of support functions. */ |
| 49 | |
| 50 | static XCharStruct *xfont_get_pcm (XFontStruct *, XChar2b *); |
| 51 | |
| 52 | /* Get metrics of character CHAR2B in XFONT. Value is null if CHAR2B |
| 53 | is not contained in the font. */ |
| 54 | |
| 55 | static XCharStruct * |
| 56 | xfont_get_pcm (XFontStruct *xfont, XChar2b *char2b) |
| 57 | { |
| 58 | /* The result metric information. */ |
| 59 | XCharStruct *pcm = NULL; |
| 60 | |
| 61 | eassert (xfont && char2b); |
| 62 | |
| 63 | if (xfont->per_char != NULL) |
| 64 | { |
| 65 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) |
| 66 | { |
| 67 | /* min_char_or_byte2 specifies the linear character index |
| 68 | corresponding to the first element of the per_char array, |
| 69 | max_char_or_byte2 is the index of the last character. A |
| 70 | character with non-zero CHAR2B->byte1 is not in the font. |
| 71 | A character with byte2 less than min_char_or_byte2 or |
| 72 | greater max_char_or_byte2 is not in the font. */ |
| 73 | if (char2b->byte1 == 0 |
| 74 | && char2b->byte2 >= xfont->min_char_or_byte2 |
| 75 | && char2b->byte2 <= xfont->max_char_or_byte2) |
| 76 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; |
| 77 | } |
| 78 | else |
| 79 | { |
| 80 | /* If either min_byte1 or max_byte1 are nonzero, both |
| 81 | min_char_or_byte2 and max_char_or_byte2 are less than |
| 82 | 256, and the 2-byte character index values corresponding |
| 83 | to the per_char array element N (counting from 0) are: |
| 84 | |
| 85 | byte1 = N/D + min_byte1 |
| 86 | byte2 = N\D + min_char_or_byte2 |
| 87 | |
| 88 | where: |
| 89 | |
| 90 | D = max_char_or_byte2 - min_char_or_byte2 + 1 |
| 91 | / = integer division |
| 92 | \ = integer modulus */ |
| 93 | if (char2b->byte1 >= xfont->min_byte1 |
| 94 | && char2b->byte1 <= xfont->max_byte1 |
| 95 | && char2b->byte2 >= xfont->min_char_or_byte2 |
| 96 | && char2b->byte2 <= xfont->max_char_or_byte2) |
| 97 | pcm = (xfont->per_char |
| 98 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) |
| 99 | * (char2b->byte1 - xfont->min_byte1)) |
| 100 | + (char2b->byte2 - xfont->min_char_or_byte2)); |
| 101 | } |
| 102 | } |
| 103 | else |
| 104 | { |
| 105 | /* If the per_char pointer is null, all glyphs between the first |
| 106 | and last character indexes inclusive have the same |
| 107 | information, as given by both min_bounds and max_bounds. */ |
| 108 | if (char2b->byte2 >= xfont->min_char_or_byte2 |
| 109 | && char2b->byte2 <= xfont->max_char_or_byte2) |
| 110 | pcm = &xfont->max_bounds; |
| 111 | } |
| 112 | |
| 113 | return ((pcm == NULL |
| 114 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) |
| 115 | ? NULL : pcm); |
| 116 | } |
| 117 | |
| 118 | static Lisp_Object xfont_get_cache (struct frame *); |
| 119 | static Lisp_Object xfont_list (struct frame *, Lisp_Object); |
| 120 | static Lisp_Object xfont_match (struct frame *, Lisp_Object); |
| 121 | static Lisp_Object xfont_list_family (struct frame *); |
| 122 | static Lisp_Object xfont_open (struct frame *, Lisp_Object, int); |
| 123 | static void xfont_close (struct font *); |
| 124 | static void xfont_prepare_face (struct frame *, struct face *); |
| 125 | static int xfont_has_char (Lisp_Object, int); |
| 126 | static unsigned xfont_encode_char (struct font *, int); |
| 127 | static int xfont_text_extents (struct font *, unsigned *, int, |
| 128 | struct font_metrics *); |
| 129 | static int xfont_draw (struct glyph_string *, int, int, int, int, bool); |
| 130 | static int xfont_check (struct frame *, struct font *); |
| 131 | |
| 132 | struct font_driver xfont_driver = |
| 133 | { |
| 134 | LISP_INITIALLY_ZERO, /* Qx */ |
| 135 | 0, /* case insensitive */ |
| 136 | xfont_get_cache, |
| 137 | xfont_list, |
| 138 | xfont_match, |
| 139 | xfont_list_family, |
| 140 | NULL, |
| 141 | xfont_open, |
| 142 | xfont_close, |
| 143 | xfont_prepare_face, |
| 144 | NULL, |
| 145 | xfont_has_char, |
| 146 | xfont_encode_char, |
| 147 | xfont_text_extents, |
| 148 | xfont_draw, |
| 149 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| 150 | xfont_check, |
| 151 | NULL, /* get_variation_glyphs */ |
| 152 | NULL, /* filter_properties */ |
| 153 | }; |
| 154 | |
| 155 | static Lisp_Object |
| 156 | xfont_get_cache (struct frame *f) |
| 157 | { |
| 158 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
| 159 | |
| 160 | return (dpyinfo->name_list_element); |
| 161 | } |
| 162 | |
| 163 | static int |
| 164 | compare_font_names (const void *name1, const void *name2) |
| 165 | { |
| 166 | char *const *n1 = name1; |
| 167 | char *const *n2 = name2; |
| 168 | return xstrcasecmp (*n1, *n2); |
| 169 | } |
| 170 | |
| 171 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
| 172 | of the decoding result. LEN is the byte length of XLFD, or -1 if |
| 173 | XLFD is NULL terminated. The caller must assure that OUTPUT is at |
| 174 | least twice (plus 1) as large as XLFD. */ |
| 175 | |
| 176 | static ptrdiff_t |
| 177 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) |
| 178 | { |
| 179 | char *p0 = xlfd, *p1 = output; |
| 180 | int c; |
| 181 | |
| 182 | while (*p0) |
| 183 | { |
| 184 | c = *(unsigned char *) p0++; |
| 185 | p1 += CHAR_STRING (c, (unsigned char *) p1); |
| 186 | if (--len == 0) |
| 187 | break; |
| 188 | } |
| 189 | *p1 = 0; |
| 190 | return (p1 - output); |
| 191 | } |
| 192 | |
| 193 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the |
| 194 | resulting byte length. If XLFD contains unencodable character, |
| 195 | return -1. */ |
| 196 | |
| 197 | static int |
| 198 | xfont_encode_coding_xlfd (char *xlfd) |
| 199 | { |
| 200 | const unsigned char *p0 = (unsigned char *) xlfd; |
| 201 | unsigned char *p1 = (unsigned char *) xlfd; |
| 202 | int len = 0; |
| 203 | |
| 204 | while (*p0) |
| 205 | { |
| 206 | int c = STRING_CHAR_ADVANCE (p0); |
| 207 | |
| 208 | if (c >= 0x100) |
| 209 | return -1; |
| 210 | *p1++ = c; |
| 211 | len++; |
| 212 | } |
| 213 | *p1 = 0; |
| 214 | return len; |
| 215 | } |
| 216 | |
| 217 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
| 218 | encoding charset is ENCODING (XFONT is NULL) or by a font whose |
| 219 | registry corresponds to ENCODING and REPERTORY. |
| 220 | Return true if supported. */ |
| 221 | |
| 222 | static bool |
| 223 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, |
| 224 | struct charset *encoding, struct charset *repertory) |
| 225 | { |
| 226 | struct charset *charset = repertory ? repertory : encoding; |
| 227 | |
| 228 | if (CONSP (chars)) |
| 229 | { |
| 230 | for (; CONSP (chars); chars = XCDR (chars)) |
| 231 | { |
| 232 | int c = XINT (XCAR (chars)); |
| 233 | unsigned code = ENCODE_CHAR (charset, c); |
| 234 | XChar2b char2b; |
| 235 | |
| 236 | if (code == CHARSET_INVALID_CODE (charset)) |
| 237 | break; |
| 238 | if (! xfont) |
| 239 | continue; |
| 240 | if (code >= 0x10000) |
| 241 | break; |
| 242 | char2b.byte1 = code >> 8; |
| 243 | char2b.byte2 = code & 0xFF; |
| 244 | if (! xfont_get_pcm (xfont, &char2b)) |
| 245 | break; |
| 246 | } |
| 247 | return (NILP (chars)); |
| 248 | } |
| 249 | else if (VECTORP (chars)) |
| 250 | { |
| 251 | ptrdiff_t i; |
| 252 | |
| 253 | for (i = ASIZE (chars) - 1; i >= 0; i--) |
| 254 | { |
| 255 | int c = XINT (AREF (chars, i)); |
| 256 | unsigned code = ENCODE_CHAR (charset, c); |
| 257 | XChar2b char2b; |
| 258 | |
| 259 | if (code == CHARSET_INVALID_CODE (charset)) |
| 260 | continue; |
| 261 | if (! xfont) |
| 262 | break; |
| 263 | if (code >= 0x10000) |
| 264 | continue; |
| 265 | char2b.byte1 = code >> 8; |
| 266 | char2b.byte2 = code & 0xFF; |
| 267 | if (xfont_get_pcm (xfont, &char2b)) |
| 268 | break; |
| 269 | } |
| 270 | return (i >= 0); |
| 271 | } |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | /* A hash table recoding which font supports which scripts. Each key |
| 276 | is a vector of characteristic font properties FOUNDRY to WIDTH and |
| 277 | ADDSTYLE, and each value is a list of script symbols. |
| 278 | |
| 279 | We assume that fonts that have the same value in the above |
| 280 | properties supports the same set of characters on all displays. */ |
| 281 | |
| 282 | static Lisp_Object xfont_scripts_cache; |
| 283 | |
| 284 | /* Re-usable vector to store characteristic font properties. */ |
| 285 | static Lisp_Object xfont_scratch_props; |
| 286 | |
| 287 | /* Return a list of scripts supported by the font of FONTNAME whose |
| 288 | characteristic properties are in PROPS and whose encoding charset |
| 289 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ |
| 290 | |
| 291 | static Lisp_Object |
| 292 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
| 293 | struct charset *encoding) |
| 294 | { |
| 295 | Lisp_Object scripts; |
| 296 | |
| 297 | /* Two special cases to avoid opening rather big fonts. */ |
| 298 | if (EQ (AREF (props, 2), Qja)) |
| 299 | return list2 (intern ("kana"), intern ("han")); |
| 300 | if (EQ (AREF (props, 2), Qko)) |
| 301 | return list1 (intern ("hangul")); |
| 302 | scripts = Fgethash (props, xfont_scripts_cache, Qt); |
| 303 | if (EQ (scripts, Qt)) |
| 304 | { |
| 305 | XFontStruct *xfont; |
| 306 | Lisp_Object val; |
| 307 | |
| 308 | scripts = Qnil; |
| 309 | xfont = XLoadQueryFont (display, fontname); |
| 310 | if (xfont) |
| 311 | { |
| 312 | if (xfont->per_char) |
| 313 | { |
| 314 | for (val = Vscript_representative_chars; CONSP (val); |
| 315 | val = XCDR (val)) |
| 316 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) |
| 317 | { |
| 318 | Lisp_Object script = XCAR (XCAR (val)); |
| 319 | Lisp_Object chars = XCDR (XCAR (val)); |
| 320 | |
| 321 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) |
| 322 | scripts = Fcons (script, scripts); |
| 323 | } |
| 324 | } |
| 325 | XFreeFont (display, xfont); |
| 326 | } |
| 327 | if (EQ (AREF (props, 3), Qiso10646_1) |
| 328 | && NILP (Fmemq (Qlatin, scripts))) |
| 329 | scripts = Fcons (Qlatin, scripts); |
| 330 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); |
| 331 | } |
| 332 | return scripts; |
| 333 | } |
| 334 | |
| 335 | static Lisp_Object |
| 336 | xfont_list_pattern (Display *display, const char *pattern, |
| 337 | Lisp_Object registry, Lisp_Object script) |
| 338 | { |
| 339 | Lisp_Object list = Qnil; |
| 340 | Lisp_Object chars = Qnil; |
| 341 | struct charset *encoding, *repertory = NULL; |
| 342 | int i, limit, num_fonts; |
| 343 | char **names; |
| 344 | /* Large enough to decode the longest XLFD (255 bytes). */ |
| 345 | char buf[512]; |
| 346 | |
| 347 | if (! NILP (registry) |
| 348 | && font_registry_charsets (registry, &encoding, &repertory) < 0) |
| 349 | /* Unknown REGISTRY, not supported. */ |
| 350 | return Qnil; |
| 351 | if (! NILP (script)) |
| 352 | { |
| 353 | chars = assq_no_quit (script, Vscript_representative_chars); |
| 354 | if (NILP (chars)) |
| 355 | /* We can't tell whether or not a font supports SCRIPT. */ |
| 356 | return Qnil; |
| 357 | chars = XCDR (chars); |
| 358 | if (repertory) |
| 359 | { |
| 360 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) |
| 361 | return Qnil; |
| 362 | script = Qnil; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | block_input (); |
| 367 | x_catch_errors (display); |
| 368 | |
| 369 | for (limit = 512; ; limit *= 2) |
| 370 | { |
| 371 | names = XListFonts (display, pattern, limit, &num_fonts); |
| 372 | if (x_had_errors_p (display)) |
| 373 | { |
| 374 | /* This error is perhaps due to insufficient memory on X |
| 375 | server. Let's just ignore it. */ |
| 376 | x_clear_errors (display); |
| 377 | num_fonts = 0; |
| 378 | break; |
| 379 | } |
| 380 | if (num_fonts < limit) |
| 381 | break; |
| 382 | XFreeFontNames (names); |
| 383 | } |
| 384 | |
| 385 | if (num_fonts > 0) |
| 386 | { |
| 387 | char **indices = alloca (sizeof (char *) * num_fonts); |
| 388 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
| 389 | Lisp_Object scripts = Qnil; |
| 390 | |
| 391 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
| 392 | ASET (xfont_scratch_props, i, Qnil); |
| 393 | for (i = 0; i < num_fonts; i++) |
| 394 | indices[i] = names[i]; |
| 395 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); |
| 396 | |
| 397 | for (i = 0; i < num_fonts; i++) |
| 398 | { |
| 399 | ptrdiff_t len; |
| 400 | Lisp_Object entity; |
| 401 | |
| 402 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
| 403 | continue; |
| 404 | entity = font_make_entity (); |
| 405 | len = xfont_decode_coding_xlfd (indices[i], -1, buf); |
| 406 | if (font_parse_xlfd (buf, len, entity) < 0) |
| 407 | continue; |
| 408 | ASET (entity, FONT_TYPE_INDEX, Qx); |
| 409 | /* Avoid auto-scaled fonts. */ |
| 410 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
| 411 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) |
| 412 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 |
| 413 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
| 414 | continue; |
| 415 | /* Avoid not-allowed scalable fonts. */ |
| 416 | if (NILP (Vscalable_fonts_allowed)) |
| 417 | { |
| 418 | int size = 0; |
| 419 | |
| 420 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) |
| 421 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 422 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) |
| 423 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); |
| 424 | if (size == 0) |
| 425 | continue; |
| 426 | } |
| 427 | else if (CONSP (Vscalable_fonts_allowed)) |
| 428 | { |
| 429 | Lisp_Object tail, elt; |
| 430 | |
| 431 | for (tail = Vscalable_fonts_allowed; CONSP (tail); |
| 432 | tail = XCDR (tail)) |
| 433 | { |
| 434 | elt = XCAR (tail); |
| 435 | if (STRINGP (elt) |
| 436 | && fast_c_string_match_ignore_case (elt, indices[i], |
| 437 | len) >= 0) |
| 438 | break; |
| 439 | } |
| 440 | if (! CONSP (tail)) |
| 441 | continue; |
| 442 | } |
| 443 | |
| 444 | /* Avoid fonts of invalid registry. */ |
| 445 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) |
| 446 | continue; |
| 447 | |
| 448 | /* Update encoding and repertory if necessary. */ |
| 449 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) |
| 450 | { |
| 451 | registry = AREF (entity, FONT_REGISTRY_INDEX); |
| 452 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
| 453 | encoding = NULL; |
| 454 | } |
| 455 | if (! encoding) |
| 456 | /* Unknown REGISTRY, not supported. */ |
| 457 | continue; |
| 458 | if (repertory) |
| 459 | { |
| 460 | if (NILP (script) |
| 461 | || xfont_chars_supported (chars, NULL, encoding, repertory)) |
| 462 | list = Fcons (entity, list); |
| 463 | continue; |
| 464 | } |
| 465 | if (memcmp (props, aref_addr (entity, FONT_FOUNDRY_INDEX), |
| 466 | word_size * 7) |
| 467 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) |
| 468 | { |
| 469 | vcopy (xfont_scratch_props, 0, |
| 470 | aref_addr (entity, FONT_FOUNDRY_INDEX), 7); |
| 471 | ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX)); |
| 472 | scripts = xfont_supported_scripts (display, indices[i], |
| 473 | xfont_scratch_props, encoding); |
| 474 | } |
| 475 | if (NILP (script) |
| 476 | || ! NILP (Fmemq (script, scripts))) |
| 477 | list = Fcons (entity, list); |
| 478 | } |
| 479 | XFreeFontNames (names); |
| 480 | } |
| 481 | |
| 482 | x_uncatch_errors (); |
| 483 | unblock_input (); |
| 484 | |
| 485 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
| 486 | return list; |
| 487 | } |
| 488 | |
| 489 | static Lisp_Object |
| 490 | xfont_list (struct frame *f, Lisp_Object spec) |
| 491 | { |
| 492 | Display *display = FRAME_DISPLAY_INFO (f)->display; |
| 493 | Lisp_Object registry, list, val, extra, script; |
| 494 | int len; |
| 495 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
| 496 | char name[512]; |
| 497 | |
| 498 | extra = AREF (spec, FONT_EXTRA_INDEX); |
| 499 | if (CONSP (extra)) |
| 500 | { |
| 501 | val = assq_no_quit (QCotf, extra); |
| 502 | if (! NILP (val)) |
| 503 | return Qnil; |
| 504 | val = assq_no_quit (QClang, extra); |
| 505 | if (! NILP (val)) |
| 506 | return Qnil; |
| 507 | } |
| 508 | |
| 509 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
| 510 | len = font_unparse_xlfd (spec, 0, name, 512); |
| 511 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) |
| 512 | return Qnil; |
| 513 | |
| 514 | val = assq_no_quit (QCscript, extra); |
| 515 | script = CDR (val); |
| 516 | list = xfont_list_pattern (display, name, registry, script); |
| 517 | if (NILP (list) && NILP (registry)) |
| 518 | { |
| 519 | /* Try iso10646-1 */ |
| 520 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ |
| 521 | |
| 522 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ |
| 523 | { |
| 524 | strcpy (r, "iso10646-1"); |
| 525 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
| 526 | } |
| 527 | } |
| 528 | if (NILP (list) && ! NILP (registry)) |
| 529 | { |
| 530 | /* Try alternate registries. */ |
| 531 | Lisp_Object alter; |
| 532 | |
| 533 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
| 534 | Vface_alternative_font_registry_alist), |
| 535 | CONSP (alter))) |
| 536 | { |
| 537 | /* Pointer to REGISTRY-ENCODING field. */ |
| 538 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); |
| 539 | |
| 540 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) |
| 541 | if (STRINGP (XCAR (alter)) |
| 542 | && ((r - name) + SBYTES (XCAR (alter))) < 256) |
| 543 | { |
| 544 | strcpy (r, SSDATA (XCAR (alter))); |
| 545 | list = xfont_list_pattern (display, name, registry, script); |
| 546 | if (! NILP (list)) |
| 547 | break; |
| 548 | } |
| 549 | } |
| 550 | } |
| 551 | if (NILP (list)) |
| 552 | { |
| 553 | /* Try alias. */ |
| 554 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); |
| 555 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
| 556 | { |
| 557 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
| 558 | if (xfont_encode_coding_xlfd (name) < 0) |
| 559 | return Qnil; |
| 560 | list = xfont_list_pattern (display, name, registry, script); |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | return list; |
| 565 | } |
| 566 | |
| 567 | static Lisp_Object |
| 568 | xfont_match (struct frame *f, Lisp_Object spec) |
| 569 | { |
| 570 | Display *display = FRAME_DISPLAY_INFO (f)->display; |
| 571 | Lisp_Object extra, val, entity; |
| 572 | char name[512]; |
| 573 | XFontStruct *xfont; |
| 574 | unsigned long value; |
| 575 | |
| 576 | extra = AREF (spec, FONT_EXTRA_INDEX); |
| 577 | val = assq_no_quit (QCname, extra); |
| 578 | if (! CONSP (val) || ! STRINGP (XCDR (val))) |
| 579 | { |
| 580 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
| 581 | return Qnil; |
| 582 | } |
| 583 | else if (SBYTES (XCDR (val)) < 512) |
| 584 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
| 585 | else |
| 586 | return Qnil; |
| 587 | if (xfont_encode_coding_xlfd (name) < 0) |
| 588 | return Qnil; |
| 589 | |
| 590 | block_input (); |
| 591 | entity = Qnil; |
| 592 | xfont = XLoadQueryFont (display, name); |
| 593 | if (xfont) |
| 594 | { |
| 595 | if (XGetFontProperty (xfont, XA_FONT, &value)) |
| 596 | { |
| 597 | char *s = XGetAtomName (display, (Atom) value); |
| 598 | |
| 599 | /* If DXPC (a Differential X Protocol Compressor) |
| 600 | Ver.3.7 is running, XGetAtomName will return null |
| 601 | string. We must avoid such a name. */ |
| 602 | if (*s) |
| 603 | { |
| 604 | ptrdiff_t len; |
| 605 | entity = font_make_entity (); |
| 606 | ASET (entity, FONT_TYPE_INDEX, Qx); |
| 607 | len = xfont_decode_coding_xlfd (s, -1, name); |
| 608 | if (font_parse_xlfd (name, len, entity) < 0) |
| 609 | entity = Qnil; |
| 610 | } |
| 611 | XFree (s); |
| 612 | } |
| 613 | XFreeFont (display, xfont); |
| 614 | } |
| 615 | unblock_input (); |
| 616 | |
| 617 | FONT_ADD_LOG ("xfont-match", spec, entity); |
| 618 | return entity; |
| 619 | } |
| 620 | |
| 621 | static Lisp_Object |
| 622 | xfont_list_family (struct frame *f) |
| 623 | { |
| 624 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
| 625 | char **names; |
| 626 | int num_fonts, i; |
| 627 | Lisp_Object list; |
| 628 | char *last_family IF_LINT (= 0); |
| 629 | int last_len; |
| 630 | |
| 631 | block_input (); |
| 632 | x_catch_errors (dpyinfo->display); |
| 633 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", |
| 634 | 0x8000, &num_fonts); |
| 635 | if (x_had_errors_p (dpyinfo->display)) |
| 636 | { |
| 637 | /* This error is perhaps due to insufficient memory on X server. |
| 638 | Let's just ignore it. */ |
| 639 | x_clear_errors (dpyinfo->display); |
| 640 | num_fonts = 0; |
| 641 | } |
| 642 | |
| 643 | list = Qnil; |
| 644 | for (i = 0, last_len = 0; i < num_fonts; i++) |
| 645 | { |
| 646 | char *p0 = names[i], *p1, buf[512]; |
| 647 | Lisp_Object family; |
| 648 | int decoded_len; |
| 649 | |
| 650 | p0++; /* skip the leading '-' */ |
| 651 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ |
| 652 | if (! *p0) |
| 653 | continue; |
| 654 | p1 = ++p0; |
| 655 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ |
| 656 | if (! *p1 || p1 == p0) |
| 657 | continue; |
| 658 | if (last_len == p1 - p0 |
| 659 | && memcmp (last_family, p0, last_len) == 0) |
| 660 | continue; |
| 661 | last_len = p1 - p0; |
| 662 | last_family = p0; |
| 663 | |
| 664 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); |
| 665 | family = font_intern_prop (p0, decoded_len, 1); |
| 666 | if (NILP (assq_no_quit (family, list))) |
| 667 | list = Fcons (family, list); |
| 668 | } |
| 669 | |
| 670 | XFreeFontNames (names); |
| 671 | x_uncatch_errors (); |
| 672 | unblock_input (); |
| 673 | |
| 674 | return list; |
| 675 | } |
| 676 | |
| 677 | static Lisp_Object |
| 678 | xfont_open (struct frame *f, Lisp_Object entity, int pixel_size) |
| 679 | { |
| 680 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
| 681 | Display *display = dpyinfo->display; |
| 682 | char name[512]; |
| 683 | int len; |
| 684 | unsigned long value; |
| 685 | Lisp_Object registry; |
| 686 | struct charset *encoding, *repertory; |
| 687 | Lisp_Object font_object, fullname; |
| 688 | struct font *font; |
| 689 | XFontStruct *xfont; |
| 690 | |
| 691 | /* At first, check if we know how to encode characters for this |
| 692 | font. */ |
| 693 | registry = AREF (entity, FONT_REGISTRY_INDEX); |
| 694 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
| 695 | { |
| 696 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
| 697 | return Qnil; |
| 698 | } |
| 699 | |
| 700 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) |
| 701 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); |
| 702 | else if (pixel_size == 0) |
| 703 | { |
| 704 | if (FRAME_FONT (f)) |
| 705 | pixel_size = FRAME_FONT (f)->pixel_size; |
| 706 | else |
| 707 | pixel_size = 14; |
| 708 | } |
| 709 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
| 710 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) |
| 711 | { |
| 712 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
| 713 | return Qnil; |
| 714 | } |
| 715 | |
| 716 | block_input (); |
| 717 | x_catch_errors (display); |
| 718 | xfont = XLoadQueryFont (display, name); |
| 719 | if (x_had_errors_p (display)) |
| 720 | { |
| 721 | /* This error is perhaps due to insufficient memory on X server. |
| 722 | Let's just ignore it. */ |
| 723 | x_clear_errors (display); |
| 724 | xfont = NULL; |
| 725 | } |
| 726 | else if (! xfont) |
| 727 | { |
| 728 | /* Some version of X lists: |
| 729 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 |
| 730 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 |
| 731 | but can open only: |
| 732 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 |
| 733 | and |
| 734 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 |
| 735 | So, we try again with wildcards in RESX and RESY. */ |
| 736 | Lisp_Object temp; |
| 737 | |
| 738 | temp = copy_font_spec (entity); |
| 739 | ASET (temp, FONT_DPI_INDEX, Qnil); |
| 740 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
| 741 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) |
| 742 | { |
| 743 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
| 744 | return Qnil; |
| 745 | } |
| 746 | xfont = XLoadQueryFont (display, name); |
| 747 | if (x_had_errors_p (display)) |
| 748 | { |
| 749 | /* This error is perhaps due to insufficient memory on X server. |
| 750 | Let's just ignore it. */ |
| 751 | x_clear_errors (display); |
| 752 | xfont = NULL; |
| 753 | } |
| 754 | } |
| 755 | fullname = Qnil; |
| 756 | /* Try to get the full name of FONT. */ |
| 757 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) |
| 758 | { |
| 759 | char *p0, *p; |
| 760 | int dashes = 0; |
| 761 | |
| 762 | p0 = p = XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
| 763 | /* Count the number of dashes in the "full name". |
| 764 | If it is too few, this isn't really the font's full name, |
| 765 | so don't use it. |
| 766 | In X11R4, the fonts did not come with their canonical names |
| 767 | stored in them. */ |
| 768 | while (*p) |
| 769 | { |
| 770 | if (*p == '-') |
| 771 | dashes++; |
| 772 | p++; |
| 773 | } |
| 774 | |
| 775 | if (dashes >= 13) |
| 776 | { |
| 777 | len = xfont_decode_coding_xlfd (p0, -1, name); |
| 778 | fullname = Fdowncase (make_string (name, len)); |
| 779 | } |
| 780 | XFree (p0); |
| 781 | } |
| 782 | x_uncatch_errors (); |
| 783 | unblock_input (); |
| 784 | |
| 785 | if (! xfont) |
| 786 | { |
| 787 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
| 788 | return Qnil; |
| 789 | } |
| 790 | |
| 791 | font_object = font_make_object (VECSIZE (struct xfont_info), |
| 792 | entity, pixel_size); |
| 793 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
| 794 | if (STRINGP (fullname)) |
| 795 | { |
| 796 | font_parse_xlfd (SSDATA (fullname), SBYTES (fullname), font_object); |
| 797 | ASET (font_object, FONT_NAME_INDEX, fullname); |
| 798 | } |
| 799 | else |
| 800 | { |
| 801 | char buf[512]; |
| 802 | |
| 803 | len = xfont_decode_coding_xlfd (name, -1, buf); |
| 804 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); |
| 805 | } |
| 806 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
| 807 | ASET (font_object, FONT_FILE_INDEX, Qnil); |
| 808 | ASET (font_object, FONT_FORMAT_INDEX, Qx); |
| 809 | font = XFONT_OBJECT (font_object); |
| 810 | ((struct xfont_info *) font)->xfont = xfont; |
| 811 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); |
| 812 | ((struct xfont_info *) font)->x_display_id = FRAME_DISPLAY_INFO (f)->x_id; |
| 813 | font->pixel_size = pixel_size; |
| 814 | font->driver = &xfont_driver; |
| 815 | font->encoding_charset = encoding->id; |
| 816 | font->repertory_charset = repertory ? repertory->id : -1; |
| 817 | font->ascent = xfont->ascent; |
| 818 | font->descent = xfont->descent; |
| 819 | font->height = font->ascent + font->descent; |
| 820 | font->min_width = xfont->min_bounds.width; |
| 821 | font->max_width = xfont->max_bounds.width; |
| 822 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
| 823 | { |
| 824 | /* Fixed width font. */ |
| 825 | font->average_width = font->space_width = xfont->min_bounds.width; |
| 826 | } |
| 827 | else |
| 828 | { |
| 829 | XCharStruct *pcm; |
| 830 | XChar2b char2b; |
| 831 | Lisp_Object val; |
| 832 | |
| 833 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; |
| 834 | pcm = xfont_get_pcm (xfont, &char2b); |
| 835 | if (pcm) |
| 836 | font->space_width = pcm->width; |
| 837 | else |
| 838 | font->space_width = 0; |
| 839 | |
| 840 | val = Ffont_get (font_object, QCavgwidth); |
| 841 | if (INTEGERP (val)) |
| 842 | font->average_width = XINT (val) / 10; |
| 843 | if (font->average_width < 0) |
| 844 | font->average_width = - font->average_width; |
| 845 | else |
| 846 | { |
| 847 | if (font->average_width == 0 |
| 848 | && encoding->ascii_compatible_p) |
| 849 | { |
| 850 | int width = font->space_width, n = pcm != NULL; |
| 851 | |
| 852 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
| 853 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) |
| 854 | width += pcm->width, n++; |
| 855 | if (n > 0) |
| 856 | font->average_width = width / n; |
| 857 | } |
| 858 | if (font->average_width == 0) |
| 859 | /* No easy way other than this to get a reasonable |
| 860 | average_width. */ |
| 861 | font->average_width |
| 862 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | block_input (); |
| 867 | font->underline_thickness |
| 868 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) |
| 869 | ? (long) value : 0); |
| 870 | font->underline_position |
| 871 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) |
| 872 | ? (long) value : -1); |
| 873 | font->baseline_offset |
| 874 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
| 875 | ? (long) value : 0); |
| 876 | font->relative_compose |
| 877 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
| 878 | ? (long) value : 0); |
| 879 | font->default_ascent |
| 880 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
| 881 | ? (long) value : 0); |
| 882 | unblock_input (); |
| 883 | |
| 884 | if (NILP (fullname)) |
| 885 | fullname = AREF (font_object, FONT_NAME_INDEX); |
| 886 | font->vertical_centering |
| 887 | = (STRINGP (Vvertical_centering_font_regexp) |
| 888 | && (fast_string_match_ignore_case |
| 889 | (Vvertical_centering_font_regexp, fullname) >= 0)); |
| 890 | |
| 891 | return font_object; |
| 892 | } |
| 893 | |
| 894 | static void |
| 895 | xfont_close (struct font *font) |
| 896 | { |
| 897 | struct x_display_info *xdi; |
| 898 | struct xfont_info *xfi = (struct xfont_info *) font; |
| 899 | |
| 900 | /* This function may be called from GC when X connection is gone |
| 901 | (Bug#16093), and an attempt to free font resources on invalid |
| 902 | display may lead to X protocol errors or segfaults. Moreover, |
| 903 | the memory referenced by 'Display *' pointer may be reused for |
| 904 | the logically different X connection after the previous display |
| 905 | connection was closed. That's why we also check whether font's |
| 906 | ID matches the one recorded in x_display_info for this display. |
| 907 | See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16069. */ |
| 908 | if (xfi->xfont |
| 909 | && ((xdi = x_display_info_for_display (xfi->display)) |
| 910 | && xfi->x_display_id == xdi->x_id)) |
| 911 | { |
| 912 | block_input (); |
| 913 | XFreeFont (xfi->display, xfi->xfont); |
| 914 | unblock_input (); |
| 915 | xfi->xfont = NULL; |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | static void |
| 920 | xfont_prepare_face (struct frame *f, struct face *face) |
| 921 | { |
| 922 | block_input (); |
| 923 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
| 924 | ((struct xfont_info *) face->font)->xfont->fid); |
| 925 | unblock_input (); |
| 926 | } |
| 927 | |
| 928 | static int |
| 929 | xfont_has_char (Lisp_Object font, int c) |
| 930 | { |
| 931 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
| 932 | struct charset *encoding; |
| 933 | struct charset *repertory = NULL; |
| 934 | |
| 935 | if (EQ (registry, Qiso10646_1)) |
| 936 | { |
| 937 | encoding = CHARSET_FROM_ID (charset_unicode); |
| 938 | /* We use a font of `ja' and `ko' adstyle only for a character |
| 939 | in JISX0208 and KSC5601 charsets respectively. */ |
| 940 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) |
| 941 | && charset_jisx0208 >= 0) |
| 942 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
| 943 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
| 944 | && charset_ksc5601 >= 0) |
| 945 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
| 946 | } |
| 947 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
| 948 | /* Unknown REGISTRY, not usable. */ |
| 949 | return 0; |
| 950 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
| 951 | return 1; |
| 952 | if (! repertory) |
| 953 | return -1; |
| 954 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); |
| 955 | } |
| 956 | |
| 957 | static unsigned |
| 958 | xfont_encode_char (struct font *font, int c) |
| 959 | { |
| 960 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
| 961 | struct charset *charset; |
| 962 | unsigned code; |
| 963 | XChar2b char2b; |
| 964 | |
| 965 | charset = CHARSET_FROM_ID (font->encoding_charset); |
| 966 | code = ENCODE_CHAR (charset, c); |
| 967 | if (code == CHARSET_INVALID_CODE (charset)) |
| 968 | return FONT_INVALID_CODE; |
| 969 | if (font->repertory_charset >= 0) |
| 970 | { |
| 971 | charset = CHARSET_FROM_ID (font->repertory_charset); |
| 972 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
| 973 | ? code : FONT_INVALID_CODE); |
| 974 | } |
| 975 | char2b.byte1 = code >> 8; |
| 976 | char2b.byte2 = code & 0xFF; |
| 977 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
| 978 | } |
| 979 | |
| 980 | static int |
| 981 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
| 982 | { |
| 983 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
| 984 | int width = 0; |
| 985 | int i, first; |
| 986 | |
| 987 | if (metrics) |
| 988 | memset (metrics, 0, sizeof (struct font_metrics)); |
| 989 | for (i = 0, first = 1; i < nglyphs; i++) |
| 990 | { |
| 991 | XChar2b char2b; |
| 992 | static XCharStruct *pcm; |
| 993 | |
| 994 | if (code[i] >= 0x10000) |
| 995 | continue; |
| 996 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; |
| 997 | pcm = xfont_get_pcm (xfont, &char2b); |
| 998 | if (! pcm) |
| 999 | continue; |
| 1000 | if (first) |
| 1001 | { |
| 1002 | if (metrics) |
| 1003 | { |
| 1004 | metrics->lbearing = pcm->lbearing; |
| 1005 | metrics->rbearing = pcm->rbearing; |
| 1006 | metrics->ascent = pcm->ascent; |
| 1007 | metrics->descent = pcm->descent; |
| 1008 | } |
| 1009 | first = 0; |
| 1010 | } |
| 1011 | else |
| 1012 | { |
| 1013 | if (metrics) |
| 1014 | { |
| 1015 | if (metrics->lbearing > width + pcm->lbearing) |
| 1016 | metrics->lbearing = width + pcm->lbearing; |
| 1017 | if (metrics->rbearing < width + pcm->rbearing) |
| 1018 | metrics->rbearing = width + pcm->rbearing; |
| 1019 | if (metrics->ascent < pcm->ascent) |
| 1020 | metrics->ascent = pcm->ascent; |
| 1021 | if (metrics->descent < pcm->descent) |
| 1022 | metrics->descent = pcm->descent; |
| 1023 | } |
| 1024 | } |
| 1025 | width += pcm->width; |
| 1026 | } |
| 1027 | if (metrics) |
| 1028 | metrics->width = width; |
| 1029 | return width; |
| 1030 | } |
| 1031 | |
| 1032 | static int |
| 1033 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, |
| 1034 | bool with_background) |
| 1035 | { |
| 1036 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
| 1037 | int len = to - from; |
| 1038 | GC gc = s->gc; |
| 1039 | int i; |
| 1040 | |
| 1041 | if (s->gc != s->face->gc) |
| 1042 | { |
| 1043 | block_input (); |
| 1044 | XSetFont (s->display, gc, xfont->fid); |
| 1045 | unblock_input (); |
| 1046 | } |
| 1047 | |
| 1048 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) |
| 1049 | { |
| 1050 | USE_SAFE_ALLOCA; |
| 1051 | char *str = SAFE_ALLOCA (len); |
| 1052 | for (i = 0; i < len ; i++) |
| 1053 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); |
| 1054 | block_input (); |
| 1055 | if (with_background) |
| 1056 | { |
| 1057 | if (s->padding_p) |
| 1058 | for (i = 0; i < len; i++) |
| 1059 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1060 | gc, x + i, y, str + i, 1); |
| 1061 | else |
| 1062 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1063 | gc, x, y, str, len); |
| 1064 | } |
| 1065 | else |
| 1066 | { |
| 1067 | if (s->padding_p) |
| 1068 | for (i = 0; i < len; i++) |
| 1069 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1070 | gc, x + i, y, str + i, 1); |
| 1071 | else |
| 1072 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1073 | gc, x, y, str, len); |
| 1074 | } |
| 1075 | unblock_input (); |
| 1076 | SAFE_FREE (); |
| 1077 | return s->nchars; |
| 1078 | } |
| 1079 | |
| 1080 | block_input (); |
| 1081 | if (with_background) |
| 1082 | { |
| 1083 | if (s->padding_p) |
| 1084 | for (i = 0; i < len; i++) |
| 1085 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1086 | gc, x + i, y, s->char2b + from + i, 1); |
| 1087 | else |
| 1088 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1089 | gc, x, y, s->char2b + from, len); |
| 1090 | } |
| 1091 | else |
| 1092 | { |
| 1093 | if (s->padding_p) |
| 1094 | for (i = 0; i < len; i++) |
| 1095 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1096 | gc, x + i, y, s->char2b + from + i, 1); |
| 1097 | else |
| 1098 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), |
| 1099 | gc, x, y, s->char2b + from, len); |
| 1100 | } |
| 1101 | unblock_input (); |
| 1102 | |
| 1103 | return len; |
| 1104 | } |
| 1105 | |
| 1106 | static int |
| 1107 | xfont_check (struct frame *f, struct font *font) |
| 1108 | { |
| 1109 | struct xfont_info *xfont = (struct xfont_info *) font; |
| 1110 | |
| 1111 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); |
| 1112 | } |
| 1113 | |
| 1114 | \f |
| 1115 | void |
| 1116 | syms_of_xfont (void) |
| 1117 | { |
| 1118 | staticpro (&xfont_scripts_cache); |
| 1119 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
| 1120 | is called fairly late, when QCtest and Qequal are known to be set. */ |
| 1121 | Lisp_Object args[2]; |
| 1122 | args[0] = QCtest; |
| 1123 | args[1] = Qequal; |
| 1124 | xfont_scripts_cache = Fmake_hash_table (2, args); |
| 1125 | } |
| 1126 | staticpro (&xfont_scratch_props); |
| 1127 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
| 1128 | xfont_driver.type = Qx; |
| 1129 | register_font_driver (&xfont_driver, NULL); |
| 1130 | } |