| 1 | /* Implementation of BDF font handling on the Microsoft W32 API. |
| 2 | Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005, |
| 3 | 2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* Based heavily on code by H. Miyashita for Meadow (a descendant of |
| 23 | MULE for W32). */ |
| 24 | |
| 25 | #include <windows.h> |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include <config.h> |
| 29 | #endif |
| 30 | |
| 31 | #include "lisp.h" |
| 32 | #include "charset.h" |
| 33 | #include "keyboard.h" |
| 34 | #include "frame.h" |
| 35 | #include "dispextern.h" |
| 36 | #include "fontset.h" |
| 37 | #include "blockinput.h" |
| 38 | #include "w32gui.h" |
| 39 | #include "w32term.h" |
| 40 | #include "w32bdf.h" |
| 41 | |
| 42 | /* 10 planes */ |
| 43 | #define BDF_CODEPOINT_HEAP_INITIAL_SIZE (96 * 10) |
| 44 | /* about 96 characters */ |
| 45 | #define BDF_BITMAP_HEAP_INITIAL_SIZE (64 * 96) |
| 46 | |
| 47 | HANDLE hbdf_cp_heap = INVALID_HANDLE_VALUE; |
| 48 | HANDLE hbdf_bmp_heap = INVALID_HANDLE_VALUE; |
| 49 | |
| 50 | void w32_free_bdf_font(bdffont *fontp); |
| 51 | bdffont *w32_init_bdf_font(char *filename); |
| 52 | |
| 53 | cache_bitmap cached_bitmap_slots[BDF_FONT_CACHE_SIZE]; |
| 54 | cache_bitmap *pcached_bitmap_latest = cached_bitmap_slots; |
| 55 | |
| 56 | #define FONT_CACHE_SLOT_OVER_P(p) ((p) >= cached_bitmap_slots + BDF_FONT_CACHE_SIZE) |
| 57 | |
| 58 | static int |
| 59 | search_file_line(char *key, char *start, int len, char **val, char **next) |
| 60 | { |
| 61 | unsigned int linelen; |
| 62 | unsigned char *p; |
| 63 | |
| 64 | p = memchr(start, '\n', len); |
| 65 | if (!p) return -1; |
| 66 | for (;(unsigned char *)start < p;start++) |
| 67 | { |
| 68 | if ((*start != ' ') && (*start != '\t')) break; |
| 69 | } |
| 70 | linelen = (char *) p - start + 1; |
| 71 | *next = p + 1; |
| 72 | if (strncmp(start, key, min(strlen(key), linelen)) == 0) |
| 73 | { |
| 74 | *val = start + strlen(key); |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | static int |
| 82 | proceed_file_line(char *key, char *start, int *len, char **val, char **next) |
| 83 | { |
| 84 | int flag = 0; |
| 85 | |
| 86 | do { |
| 87 | flag = search_file_line(key, start, *len, val, next); |
| 88 | *len -= (int)(*next - start); |
| 89 | start = *next; |
| 90 | }while(flag == 0); |
| 91 | |
| 92 | if (flag == -1) return 0; |
| 93 | return 1; |
| 94 | } |
| 95 | |
| 96 | char* |
| 97 | get_quoted_string(char *start, char *end) |
| 98 | { |
| 99 | char *p, *q, *result; |
| 100 | |
| 101 | p = memchr(start, '\"', end - start); |
| 102 | if (!p) return NULL; |
| 103 | p++; |
| 104 | q = memchr(p, '\"', end - p); |
| 105 | if (!q) return NULL; |
| 106 | |
| 107 | result = (char*) xmalloc(q - p + 1); |
| 108 | |
| 109 | memcpy(result, p, q - p); |
| 110 | result[q - p] = '\0'; |
| 111 | |
| 112 | return result; |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | set_bdf_font_info(bdffont *fontp) |
| 117 | { |
| 118 | unsigned char *start, *p, *q; |
| 119 | int len, flag; |
| 120 | int bbw, bbh, bbx, bby; |
| 121 | int val1; |
| 122 | |
| 123 | len = fontp->size; |
| 124 | start = fontp->font; |
| 125 | |
| 126 | fontp->yoffset = 0; |
| 127 | fontp->relative_compose = 0; |
| 128 | fontp->default_ascent = 0; |
| 129 | |
| 130 | fontp->registry = NULL; |
| 131 | fontp->encoding = NULL; |
| 132 | fontp->slant = NULL; |
| 133 | /* fontp->width = NULL; */ |
| 134 | |
| 135 | flag = proceed_file_line("FONTBOUNDINGBOX", start, &len, |
| 136 | (char **)&p, (char **)&q); |
| 137 | if (!flag) return 0; |
| 138 | bbw = strtol(p, (char **)&start, 10); |
| 139 | p = start; |
| 140 | bbh = strtol(p, (char **)&start, 10); |
| 141 | p = start; |
| 142 | bbx = strtol(p, (char **)&start, 10); |
| 143 | p = start; |
| 144 | bby = strtol(p, (char **)&start, 10); |
| 145 | |
| 146 | fontp->llx = bbx; |
| 147 | fontp->lly = bby; |
| 148 | fontp->urx = bbw + bbx; |
| 149 | fontp->ury = bbh + bby; |
| 150 | fontp->width = bbw; |
| 151 | fontp->height = bbh; |
| 152 | start = q; |
| 153 | flag = proceed_file_line("STARTPROPERTIES", start, &len, |
| 154 | (char **)&p, (char **)&q); |
| 155 | if (!flag) return 1; |
| 156 | |
| 157 | flag = 0; |
| 158 | |
| 159 | do { |
| 160 | start = q; |
| 161 | if (search_file_line("PIXEL_SIZE", start, len, |
| 162 | (char **)&p, (char **)&q) == 1) |
| 163 | { |
| 164 | val1 = atoi(p); |
| 165 | fontp->pixsz = val1; |
| 166 | } |
| 167 | else if (search_file_line("FONT_ASCENT", start, len, |
| 168 | (char **)&p, (char **)&q) == 1) |
| 169 | { |
| 170 | val1 = atoi(p); |
| 171 | fontp->ury = val1; |
| 172 | } |
| 173 | else if (search_file_line("FONT_DESCENT", start, len, |
| 174 | (char **)&p, (char **)&q) == 1) |
| 175 | { |
| 176 | val1 = atoi(p); |
| 177 | fontp->lly = -val1; |
| 178 | } |
| 179 | else if (search_file_line("_MULE_BASELINE_OFFSET", start, len, |
| 180 | (char **)&p, (char **)&q) == 1) |
| 181 | { |
| 182 | val1 = atoi(p); |
| 183 | fontp->yoffset = -val1; |
| 184 | } |
| 185 | else if (search_file_line("_MULE_RELATIVE_COMPOSE", start, len, |
| 186 | (char **)&p, (char **)&q) == 1) |
| 187 | { |
| 188 | val1 = atoi(p); |
| 189 | fontp->relative_compose = val1; |
| 190 | } |
| 191 | else if (search_file_line("_MULE_DEFAULT_ASCENT", start, len, |
| 192 | (char **)&p, (char **)&q) == 1) |
| 193 | { |
| 194 | val1 = atoi(p); |
| 195 | fontp->default_ascent = val1; |
| 196 | } |
| 197 | else if (search_file_line("CHARSET_REGISTRY", start, len, |
| 198 | (char **)&p, (char **)&q) == 1) |
| 199 | { |
| 200 | fontp->registry = get_quoted_string(p, q); |
| 201 | } |
| 202 | else if (search_file_line("CHARSET_ENCODING", start, len, |
| 203 | (char **)&p, (char **)&q) == 1) |
| 204 | { |
| 205 | fontp->encoding = get_quoted_string(p, q); |
| 206 | } |
| 207 | else if (search_file_line("SLANT", start, len, |
| 208 | (char **)&p, (char **)&q) == 1) |
| 209 | { |
| 210 | fontp->slant = get_quoted_string(p, q); |
| 211 | } |
| 212 | /* |
| 213 | else if (search_file_line("SETWIDTH_NAME", start, len, |
| 214 | (char **)&p, (char **)&q) == 1) |
| 215 | { |
| 216 | fontp->width = get_quoted_string(p, q); |
| 217 | } |
| 218 | */ |
| 219 | else |
| 220 | { |
| 221 | flag = search_file_line("ENDPROPERTIES", start, len, |
| 222 | (char **)&p, (char **)&q); |
| 223 | } |
| 224 | if (flag == -1) return 0; |
| 225 | len -= (q - start); |
| 226 | }while(flag == 0); |
| 227 | start = q; |
| 228 | flag = proceed_file_line("CHARS", start, &len, (char **)&p, (char **)&q); |
| 229 | if (!flag) return 0; |
| 230 | fontp->nchars = atoi(p); |
| 231 | fontp->seeked = q; |
| 232 | |
| 233 | return 1; |
| 234 | } |
| 235 | |
| 236 | bdffont* |
| 237 | w32_init_bdf_font(char *filename) |
| 238 | { |
| 239 | HANDLE hfile, hfilemap; |
| 240 | bdffont *bdffontp; |
| 241 | unsigned char *font; |
| 242 | BY_HANDLE_FILE_INFORMATION fileinfo; |
| 243 | int i; |
| 244 | |
| 245 | if (hbdf_cp_heap == INVALID_HANDLE_VALUE) |
| 246 | hbdf_cp_heap = HeapCreate(0, BDF_CODEPOINT_HEAP_INITIAL_SIZE, 0); |
| 247 | if (hbdf_bmp_heap == INVALID_HANDLE_VALUE) |
| 248 | hbdf_bmp_heap = HeapCreate(0, BDF_BITMAP_HEAP_INITIAL_SIZE, 0); |
| 249 | |
| 250 | if (!hbdf_cp_heap || !hbdf_bmp_heap) |
| 251 | error("Fail to create heap for BDF"); |
| 252 | |
| 253 | hfile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, |
| 254 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 255 | if (hfile == INVALID_HANDLE_VALUE) return NULL; |
| 256 | if (!GetFileInformationByHandle(hfile, &fileinfo) || |
| 257 | (fileinfo.nFileSizeHigh != 0) || |
| 258 | (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX)) |
| 259 | { |
| 260 | CloseHandle(hfile); |
| 261 | error("Fail to open BDF file"); |
| 262 | } |
| 263 | hfilemap = CreateFileMapping(hfile, NULL, PAGE_READONLY, 0, 0, NULL); |
| 264 | if (!hfilemap) |
| 265 | { |
| 266 | CloseHandle(hfile); |
| 267 | error("Can't map font"); |
| 268 | } |
| 269 | |
| 270 | font = MapViewOfFile(hfilemap, FILE_MAP_READ, 0, 0, 0); |
| 271 | |
| 272 | if (!font) |
| 273 | { |
| 274 | CloseHandle(hfile); |
| 275 | CloseHandle(hfilemap); |
| 276 | error("Can't view font"); |
| 277 | } |
| 278 | |
| 279 | bdffontp = (bdffont *) xmalloc(sizeof(bdffont)); |
| 280 | |
| 281 | for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++) |
| 282 | bdffontp->chtbl[i] = NULL; |
| 283 | bdffontp->size = fileinfo.nFileSizeLow; |
| 284 | bdffontp->font = font; |
| 285 | bdffontp->hfile = hfile; |
| 286 | bdffontp->hfilemap = hfilemap; |
| 287 | bdffontp->filename = (char*) xmalloc(strlen(filename) + 1); |
| 288 | strcpy(bdffontp->filename, filename); |
| 289 | |
| 290 | if (!set_bdf_font_info(bdffontp)) |
| 291 | { |
| 292 | w32_free_bdf_font(bdffontp); |
| 293 | error("Invalid BDF font!"); |
| 294 | } |
| 295 | return bdffontp; |
| 296 | } |
| 297 | |
| 298 | void |
| 299 | w32_free_bdf_font(bdffont *fontp) |
| 300 | { |
| 301 | int i, j; |
| 302 | font_char *pch; |
| 303 | cache_bitmap *pcb; |
| 304 | |
| 305 | UnmapViewOfFile(fontp->font); |
| 306 | CloseHandle(fontp->hfilemap); |
| 307 | CloseHandle(fontp->hfile); |
| 308 | |
| 309 | if (fontp->registry) xfree(fontp->registry); |
| 310 | if (fontp->encoding) xfree(fontp->encoding); |
| 311 | if (fontp->slant) xfree(fontp->slant); |
| 312 | /* if (fontp->width) xfree(fontp->width); */ |
| 313 | |
| 314 | xfree(fontp->filename); |
| 315 | for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++) |
| 316 | { |
| 317 | pch = fontp->chtbl[i]; |
| 318 | if (pch) |
| 319 | { |
| 320 | for (j = 0;j < BDF_SECOND_OFFSET_TABLE;j++) |
| 321 | { |
| 322 | pcb = pch[j].pcbmp; |
| 323 | if (pcb) |
| 324 | { |
| 325 | if (pcb->pbmp) |
| 326 | HeapFree(hbdf_bmp_heap, 0, pcb->pbmp); |
| 327 | pcb->psrc = NULL; |
| 328 | } |
| 329 | } |
| 330 | HeapFree(hbdf_cp_heap, 0, pch); |
| 331 | } |
| 332 | } |
| 333 | xfree(fontp); |
| 334 | } |
| 335 | |
| 336 | static font_char* |
| 337 | get_cached_font_char(bdffont *fontp, int index) |
| 338 | { |
| 339 | font_char *pch, *result; |
| 340 | |
| 341 | if (!BDF_CODEPOINT_RANGE_COVER_P(index)) |
| 342 | return NULL; |
| 343 | |
| 344 | pch = fontp->chtbl[BDF_FIRST_OFFSET(index)]; |
| 345 | if (!pch) |
| 346 | return NULL; |
| 347 | |
| 348 | result = &pch[BDF_SECOND_OFFSET(index)]; |
| 349 | |
| 350 | if (!result->offset) return NULL; |
| 351 | |
| 352 | return result; |
| 353 | } |
| 354 | |
| 355 | static font_char* |
| 356 | cache_char_offset(bdffont *fontp, int index, unsigned char *offset) |
| 357 | { |
| 358 | font_char *pch, *result; |
| 359 | |
| 360 | if (!BDF_CODEPOINT_RANGE_COVER_P(index)) |
| 361 | return NULL; |
| 362 | |
| 363 | pch = fontp->chtbl[BDF_FIRST_OFFSET(index)]; |
| 364 | if (!pch) |
| 365 | { |
| 366 | pch = fontp->chtbl[BDF_FIRST_OFFSET(index)] = |
| 367 | (font_char*) HeapAlloc(hbdf_cp_heap, |
| 368 | HEAP_ZERO_MEMORY, |
| 369 | sizeof(font_char) * |
| 370 | BDF_SECOND_OFFSET_TABLE); |
| 371 | if (!pch) return NULL; |
| 372 | /* memset(pch, 0, sizeof(font_char) * BDF_SECOND_OFFSET_TABLE); */ |
| 373 | } |
| 374 | |
| 375 | result = &pch[BDF_SECOND_OFFSET(index)]; |
| 376 | result->offset = offset; |
| 377 | |
| 378 | return result; |
| 379 | } |
| 380 | |
| 381 | static font_char* |
| 382 | seek_char(bdffont *fontp, int index) |
| 383 | { |
| 384 | font_char *result; |
| 385 | int len, flag, font_index; |
| 386 | unsigned char *start, *p, *q; |
| 387 | |
| 388 | if (!fontp->seeked) return NULL; |
| 389 | |
| 390 | start = fontp->seeked; |
| 391 | len = fontp->size - (start - fontp->font); |
| 392 | |
| 393 | do { |
| 394 | flag = proceed_file_line("ENCODING", start, &len, |
| 395 | (char **)&p, (char **)&q); |
| 396 | if (!flag) |
| 397 | { |
| 398 | fontp->seeked = NULL; |
| 399 | return NULL; |
| 400 | } |
| 401 | font_index = atoi(p); |
| 402 | result = cache_char_offset(fontp, font_index, q); |
| 403 | if (!result) return NULL; |
| 404 | |
| 405 | start = result->offset; |
| 406 | } while (font_index != index); |
| 407 | fontp->seeked = start; |
| 408 | |
| 409 | return result; |
| 410 | } |
| 411 | |
| 412 | static void |
| 413 | clear_cached_bitmap_slots() |
| 414 | { |
| 415 | int i; |
| 416 | cache_bitmap *p; |
| 417 | |
| 418 | p = pcached_bitmap_latest; |
| 419 | for (i = 0;i < BDF_FONT_CLEAR_SIZE;i++) |
| 420 | { |
| 421 | if (p->psrc) |
| 422 | { |
| 423 | if (p->pbmp) |
| 424 | HeapFree(hbdf_bmp_heap, 0, p->pbmp); |
| 425 | p->psrc->pcbmp = NULL; |
| 426 | p->psrc = NULL; |
| 427 | } |
| 428 | p++; |
| 429 | if (FONT_CACHE_SLOT_OVER_P(p)) |
| 430 | p = cached_bitmap_slots; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | #define GET_HEX_VAL(x) ((isdigit(x)) ? ((x) - '0') : \ |
| 435 | (((x) >= 'A') && ((x) <= 'F')) ? ((x) - 'A' + 10) : \ |
| 436 | (((x) >= 'a') && ((x) <= 'f')) ? ((x) - 'a' + 10) : \ |
| 437 | (-1)) |
| 438 | |
| 439 | int |
| 440 | w32_get_bdf_glyph(bdffont *fontp, int index, int size, glyph_struct *glyph) |
| 441 | { |
| 442 | font_char *pch; |
| 443 | unsigned char *start, *p, *q, *bitmapp; |
| 444 | unsigned char val, val1, val2; |
| 445 | int i, j, len, flag, consumed; |
| 446 | int align, rowbytes; |
| 447 | |
| 448 | pch = get_cached_font_char(fontp, index); |
| 449 | if (!pch) |
| 450 | { |
| 451 | pch = seek_char(fontp, index); |
| 452 | if (!pch) |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | start = pch->offset; |
| 457 | |
| 458 | if ((size == 0) && pch->pcbmp) |
| 459 | { |
| 460 | glyph->metric = pch->pcbmp->metric; |
| 461 | return 1; |
| 462 | } |
| 463 | |
| 464 | len = fontp->size - (start - fontp->font); |
| 465 | |
| 466 | flag = proceed_file_line("DWIDTH", start, &len, (char **)&p, (char **)&q); |
| 467 | if (!flag) |
| 468 | return 0; |
| 469 | glyph->metric.dwidth = atoi(p); |
| 470 | |
| 471 | start = q; |
| 472 | flag = proceed_file_line("BBX", start, &len, (char **)&p, (char **)&q); |
| 473 | if (!flag) |
| 474 | return 0; |
| 475 | glyph->metric.bbw = strtol(p, (char **)&start, 10); |
| 476 | p = start; |
| 477 | glyph->metric.bbh = strtol(p, (char **)&start, 10); |
| 478 | p = start; |
| 479 | glyph->metric.bbox = strtol(p, (char **)&start, 10); |
| 480 | p = start; |
| 481 | glyph->metric.bboy = strtol(p, (char **)&start, 10); |
| 482 | |
| 483 | if (size == 0) return 1; |
| 484 | |
| 485 | start = q; |
| 486 | flag = proceed_file_line("BITMAP", start, &len, (char **)&p, (char **)&q); |
| 487 | if (!flag) |
| 488 | return 0; |
| 489 | |
| 490 | consumed = 0; |
| 491 | flag = 0; |
| 492 | p = q; |
| 493 | bitmapp = glyph->bitmap; |
| 494 | rowbytes = (glyph->metric.bbw + 7) / 8; |
| 495 | /* DIB requires DWORD alignment. */ |
| 496 | align = sizeof(DWORD) - rowbytes % sizeof(DWORD); |
| 497 | consumed = glyph->metric.bbh * (rowbytes + align); |
| 498 | glyph->bitmap_size = consumed; |
| 499 | glyph->row_byte_size = rowbytes; |
| 500 | if (size < consumed) return 0; |
| 501 | |
| 502 | for(i = 0;i < glyph->metric.bbh;i++) |
| 503 | { |
| 504 | q = memchr(p, '\n', len); |
| 505 | if (!q) return 0; |
| 506 | for(j = 0;((q > p) && (j < rowbytes));j++) |
| 507 | { |
| 508 | int ival = GET_HEX_VAL(*p); |
| 509 | |
| 510 | if (ival == -1) return 0; |
| 511 | val1 = ival; |
| 512 | p++; |
| 513 | ival = GET_HEX_VAL(*p); |
| 514 | if (ival == -1) return 0; |
| 515 | val2 = ival; |
| 516 | p++; |
| 517 | val = (unsigned char)((val1 << 4) | val2); |
| 518 | if (val) flag = 1; |
| 519 | *bitmapp++ = val; |
| 520 | } |
| 521 | for(j = 0;j < align;j++) |
| 522 | *bitmapp++ = 0x00; |
| 523 | p = q + 1; |
| 524 | } |
| 525 | |
| 526 | /* If this glyph is white space, return -1. */ |
| 527 | if (flag == 0) return -1; |
| 528 | |
| 529 | return consumed; |
| 530 | } |
| 531 | |
| 532 | static |
| 533 | cache_bitmap* |
| 534 | get_bitmap_with_cache(bdffont *fontp, int index) |
| 535 | { |
| 536 | int bitmap_size, bitmap_real_size; |
| 537 | font_char *pch; |
| 538 | cache_bitmap* pcb; |
| 539 | unsigned char *pbmp; |
| 540 | glyph_struct glyph; |
| 541 | |
| 542 | pch = get_cached_font_char(fontp, index); |
| 543 | if (pch) |
| 544 | { |
| 545 | pcb = pch->pcbmp; |
| 546 | if (pcb) return pcb; |
| 547 | } |
| 548 | |
| 549 | bitmap_size = ((fontp->urx - fontp->llx) / 8 + 3) * (fontp->ury - fontp->lly) |
| 550 | + 256; |
| 551 | glyph.bitmap = (unsigned char*) alloca(sizeof(unsigned char) * bitmap_size); |
| 552 | |
| 553 | bitmap_real_size = w32_get_bdf_glyph(fontp, index, bitmap_size, &glyph); |
| 554 | |
| 555 | if (bitmap_real_size == 0) |
| 556 | return NULL; |
| 557 | |
| 558 | pch = get_cached_font_char(fontp, index); |
| 559 | if (!pch) return NULL; |
| 560 | |
| 561 | if (bitmap_real_size > 0) |
| 562 | { |
| 563 | pbmp = (unsigned char*) HeapAlloc(hbdf_bmp_heap, 0, |
| 564 | bitmap_real_size); |
| 565 | if (!pbmp) return NULL; |
| 566 | memcpy(pbmp, glyph.bitmap, bitmap_real_size); |
| 567 | } |
| 568 | else |
| 569 | pbmp = NULL; /* white space character */ |
| 570 | |
| 571 | pcb = pcached_bitmap_latest; |
| 572 | if (pcb->psrc) |
| 573 | clear_cached_bitmap_slots(); |
| 574 | |
| 575 | pcb->psrc = pch; |
| 576 | pcb->metric = glyph.metric; |
| 577 | pcb->pbmp = pbmp; |
| 578 | pcb->bitmap_size = glyph.bitmap_size; |
| 579 | pcb->row_byte_size = glyph.row_byte_size; |
| 580 | |
| 581 | pch->pcbmp = pcb; |
| 582 | |
| 583 | pcached_bitmap_latest++; |
| 584 | if (FONT_CACHE_SLOT_OVER_P(pcached_bitmap_latest)) |
| 585 | pcached_bitmap_latest = cached_bitmap_slots; |
| 586 | |
| 587 | return pcb; |
| 588 | } |
| 589 | |
| 590 | static HBITMAP |
| 591 | create_offscreen_bitmap(HDC hdc, int width, int height, unsigned char **bitsp) |
| 592 | { |
| 593 | struct { |
| 594 | BITMAPINFOHEADER h; |
| 595 | RGBQUAD c[2]; |
| 596 | } info; |
| 597 | |
| 598 | memset(&info, 0, sizeof(info)); |
| 599 | info.h.biSize = sizeof(BITMAPINFOHEADER); |
| 600 | info.h.biWidth = width; |
| 601 | info.h.biHeight = -height; |
| 602 | info.h.biPlanes = 1; |
| 603 | info.h.biBitCount = 1; |
| 604 | info.h.biCompression = BI_RGB; |
| 605 | info.c[1].rgbRed = info.c[1].rgbGreen = info.c[1].rgbBlue = 255; |
| 606 | |
| 607 | return CreateDIBSection(hdc, (LPBITMAPINFO)&info, |
| 608 | DIB_RGB_COLORS, (void **)bitsp, NULL, 0); |
| 609 | } |
| 610 | |
| 611 | glyph_metric * |
| 612 | w32_BDF_TextMetric(bdffont *fontp, unsigned char *text, int dim) |
| 613 | { |
| 614 | int index; |
| 615 | cache_bitmap *pcb; |
| 616 | |
| 617 | if (dim == 1) |
| 618 | index = *text; |
| 619 | else |
| 620 | index = MAKELENDSHORT(text[1], text[0]); |
| 621 | |
| 622 | pcb = get_bitmap_with_cache(fontp, index); |
| 623 | if (!pcb) |
| 624 | return NULL; |
| 625 | |
| 626 | return &(pcb->metric); |
| 627 | } |
| 628 | |
| 629 | int |
| 630 | w32_BDF_TextOut(bdffont *fontp, HDC hdc, int left, |
| 631 | int top, unsigned char *text, int dim, int bytelen, |
| 632 | int fixed_pitch_size) |
| 633 | { |
| 634 | int index, btop; |
| 635 | unsigned char *textp; |
| 636 | cache_bitmap *pcb; |
| 637 | HBRUSH hFgBrush, hOrgBrush; |
| 638 | HANDLE horgobj; |
| 639 | UINT textalign; |
| 640 | int width, height; |
| 641 | HDC hCompatDC; |
| 642 | int ret = 1; |
| 643 | static HBITMAP hBMP = 0; |
| 644 | static HDC DIBsection_hdc = 0; |
| 645 | static int DIBsection_width, DIBsection_height; |
| 646 | static unsigned char *bits; |
| 647 | |
| 648 | hCompatDC = CreateCompatibleDC(hdc); |
| 649 | if (!hCompatDC) |
| 650 | return 0; |
| 651 | |
| 652 | textalign = GetTextAlign(hdc); |
| 653 | |
| 654 | hFgBrush = CreateSolidBrush(GetTextColor(hdc)); |
| 655 | hOrgBrush = SelectObject(hdc, hFgBrush); |
| 656 | |
| 657 | textp = text; |
| 658 | |
| 659 | while(bytelen > 0) |
| 660 | { |
| 661 | if (dim == 1) |
| 662 | { |
| 663 | index = *textp++; |
| 664 | bytelen--; |
| 665 | } |
| 666 | else |
| 667 | { |
| 668 | bytelen -= 2; |
| 669 | if (bytelen < 0) break; |
| 670 | index = MAKELENDSHORT(textp[0], textp[1]); |
| 671 | textp += 2; |
| 672 | } |
| 673 | pcb = get_bitmap_with_cache(fontp, index); |
| 674 | if (!pcb) |
| 675 | { |
| 676 | ret = 0; |
| 677 | break; |
| 678 | } |
| 679 | if (pcb->pbmp) |
| 680 | { |
| 681 | width = pcb->metric.bbw; |
| 682 | height = pcb->metric.bbh; |
| 683 | |
| 684 | if (!(hBMP |
| 685 | && (DIBsection_hdc == hdc) |
| 686 | && (DIBsection_width == width) |
| 687 | && (DIBsection_height == height))) |
| 688 | { |
| 689 | if (hBMP) DeleteObject(hBMP); |
| 690 | hBMP = create_offscreen_bitmap(hdc, width, height, &bits); |
| 691 | DIBsection_hdc = hdc; |
| 692 | DIBsection_width = width; |
| 693 | DIBsection_height = height; |
| 694 | if (!hBMP) return 0; |
| 695 | } |
| 696 | |
| 697 | memcpy(bits, pcb->pbmp, pcb->bitmap_size); |
| 698 | |
| 699 | if (textalign & TA_BASELINE) |
| 700 | btop = top - (pcb->metric.bbh + pcb->metric.bboy); |
| 701 | else if (textalign & TA_BOTTOM) |
| 702 | btop = top - pcb->metric.bbh; |
| 703 | else |
| 704 | btop = top; |
| 705 | |
| 706 | horgobj = SelectObject(hCompatDC, hBMP); |
| 707 | BitBlt(hdc, left, btop, width, height, hCompatDC, 0, 0, 0xE20746); |
| 708 | SelectObject(hCompatDC, horgobj); |
| 709 | } |
| 710 | |
| 711 | if (fixed_pitch_size) |
| 712 | left += fixed_pitch_size; |
| 713 | else |
| 714 | left += pcb->metric.dwidth; |
| 715 | } |
| 716 | |
| 717 | DeleteDC(hCompatDC); |
| 718 | |
| 719 | SelectObject(hdc, hOrgBrush); |
| 720 | DeleteObject(hFgBrush); |
| 721 | |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | struct font_info *w32_load_bdf_font (struct frame *f, char *fontname, |
| 726 | int size, char* filename) |
| 727 | { |
| 728 | struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f); |
| 729 | struct font_info *fontp; |
| 730 | XFontStruct *font; |
| 731 | bdffont* bdf_font; |
| 732 | |
| 733 | bdf_font = w32_init_bdf_font (filename); |
| 734 | |
| 735 | if (!bdf_font) return NULL; |
| 736 | |
| 737 | font = (XFontStruct *) xmalloc (sizeof (XFontStruct)); |
| 738 | bzero (font, sizeof (*font)); |
| 739 | |
| 740 | font->bdf = bdf_font; |
| 741 | font->hfont = 0; |
| 742 | |
| 743 | /* NTEMACS_TODO: Better way of determining if a font is double byte |
| 744 | or not. */ |
| 745 | font->double_byte_p = bdf_font->nchars > 255 ? 1 : 0; |
| 746 | |
| 747 | w32_cache_char_metrics (font); |
| 748 | |
| 749 | /* Do we need to create the table? */ |
| 750 | if (dpyinfo->font_table_size == 0) |
| 751 | { |
| 752 | dpyinfo->font_table_size = 16; |
| 753 | dpyinfo->font_table |
| 754 | = (struct font_info *) xmalloc (dpyinfo->font_table_size |
| 755 | * sizeof (struct font_info)); |
| 756 | } |
| 757 | /* Do we need to grow the table? */ |
| 758 | else if (dpyinfo->n_fonts |
| 759 | >= dpyinfo->font_table_size) |
| 760 | { |
| 761 | dpyinfo->font_table_size *= 2; |
| 762 | dpyinfo->font_table |
| 763 | = (struct font_info *) xrealloc (dpyinfo->font_table, |
| 764 | (dpyinfo->font_table_size |
| 765 | * sizeof (struct font_info))); |
| 766 | } |
| 767 | |
| 768 | fontp = dpyinfo->font_table + dpyinfo->n_fonts; |
| 769 | |
| 770 | /* Now fill in the slots of *FONTP. */ |
| 771 | BLOCK_INPUT; |
| 772 | bzero (fontp, sizeof (*fontp)); |
| 773 | fontp->font = font; |
| 774 | fontp->font_idx = dpyinfo->n_fonts; |
| 775 | fontp->name = (char *) xmalloc (strlen (fontname) + 1); |
| 776 | bcopy (fontname, fontp->name, strlen (fontname) + 1); |
| 777 | fontp->full_name = fontp->name; |
| 778 | /* FIXME: look at BDF spec to see if there are better ways of finding |
| 779 | average_width and space_width, hopefully that don't involve working out |
| 780 | the values for ourselves from the data. */ |
| 781 | fontp->size = fontp->average_width = fontp->space_width = FONT_WIDTH (font); |
| 782 | fontp->height = FONT_HEIGHT (font); |
| 783 | |
| 784 | /* The slot `encoding' specifies how to map a character |
| 785 | code-points (0x20..0x7F or 0x2020..0x7F7F) of each charset to |
| 786 | the font code-points (0:0x20..0x7F, 1:0xA0..0xFF, 0:0x2020..0x7F7F, |
| 787 | the font code-points (0:0x20..0x7F, 1:0xA0..0xFF, |
| 788 | 0:0x2020..0x7F7F, 1:0xA0A0..0xFFFF, 3:0x20A0..0x7FFF, or |
| 789 | 2:0xA020..0xFF7F). For the moment, we don't know which charset |
| 790 | uses this font. So, we set informatoin in fontp->encoding[1] |
| 791 | which is never used by any charset. If mapping can't be |
| 792 | decided, set FONT_ENCODING_NOT_DECIDED. */ |
| 793 | fontp->encoding[1] = FONT_ENCODING_NOT_DECIDED; |
| 794 | fontp->baseline_offset = bdf_font->yoffset; |
| 795 | fontp->relative_compose = bdf_font->relative_compose; |
| 796 | fontp->default_ascent = bdf_font->default_ascent; |
| 797 | |
| 798 | /* Set global flag fonts_changed_p to non-zero if the font loaded |
| 799 | has a character with a smaller width than any other character |
| 800 | before, or if the font loaded has a smaller height than any |
| 801 | other font loaded before. If this happens, it will make a |
| 802 | glyph matrix reallocation necessary. */ |
| 803 | fonts_changed_p |= x_compute_min_glyph_bounds (f); |
| 804 | |
| 805 | UNBLOCK_INPUT; |
| 806 | dpyinfo->n_fonts++; |
| 807 | return fontp; |
| 808 | } |
| 809 | |
| 810 | /* Check a file for an XLFD string describing it. */ |
| 811 | int w32_BDF_to_x_font (char *file, char* xstr, int len) |
| 812 | { |
| 813 | HANDLE hfile, hfilemap; |
| 814 | BY_HANDLE_FILE_INFORMATION fileinfo; |
| 815 | char *font, *start, *p, *q; |
| 816 | int flag, size, retval = 0; |
| 817 | |
| 818 | hfile = CreateFile (file, GENERIC_READ, FILE_SHARE_READ, NULL, |
| 819 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 820 | if (hfile == INVALID_HANDLE_VALUE) return 0; |
| 821 | if (!GetFileInformationByHandle(hfile, &fileinfo) || |
| 822 | (fileinfo.nFileSizeHigh != 0) || |
| 823 | (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX)) |
| 824 | { |
| 825 | CloseHandle (hfile); |
| 826 | return 0; |
| 827 | } |
| 828 | size = fileinfo.nFileSizeLow; |
| 829 | |
| 830 | hfilemap = CreateFileMapping (hfile, NULL, PAGE_READONLY, 0, 0, NULL); |
| 831 | if (!hfilemap) |
| 832 | { |
| 833 | CloseHandle (hfile); |
| 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | font = MapViewOfFile (hfilemap, FILE_MAP_READ, 0, 0, 0); |
| 838 | if (!font) |
| 839 | { |
| 840 | CloseHandle (hfile); |
| 841 | CloseHandle (hfilemap); |
| 842 | return 0; |
| 843 | } |
| 844 | start = font; |
| 845 | |
| 846 | flag = proceed_file_line ("FONT ", start, &size, &p, &q); |
| 847 | if (flag) |
| 848 | { |
| 849 | /* If font provides a description of itself, check it is a |
| 850 | full XLFD before accepting it. */ |
| 851 | int count = 0; |
| 852 | char *s; |
| 853 | |
| 854 | for (s = p; s < q; s++) |
| 855 | if (*s == '\n') |
| 856 | break; |
| 857 | else if (*s == '-') |
| 858 | count++; |
| 859 | if (count == 14 && q - p - 1 <= len) |
| 860 | { |
| 861 | strncpy (xstr, p, q-p-1); |
| 862 | xstr[q-p-1] = '\0'; |
| 863 | /* Files may have DOS line ends (ie still ^M on end). */ |
| 864 | if (iscntrl(xstr[q-p-2])) |
| 865 | xstr[q-p-2] = '\0'; |
| 866 | |
| 867 | retval = 1; |
| 868 | } |
| 869 | } |
| 870 | UnmapViewOfFile (font); |
| 871 | CloseHandle (hfile); |
| 872 | CloseHandle (hfilemap); |
| 873 | return retval; |
| 874 | } |
| 875 | |
| 876 | /* arch-tag: 2e9a45de-0c54-4a0e-95c8-2d67b2b1fa32 |
| 877 | (do not change this comment) */ |