src/w32bdf.c

   1 /* Implementation of BDF font handling on the Microsoft W32 API.
   2    Copyright (C) 1999 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Based heavily on code by H. Miyashita for Meadow (a descendant of
  22    MULE for W32). */
  23
  24 #include <windows.h>
  25 #include "config.h"
  26 #include "lisp.h"
  27 #include "charset.h"
  28 #include "frame.h"
  29 #include "dispextern.h"
  30 #include "fontset.h"
  31 #include "blockinput.h"
  32 #include "w32gui.h"
  33 #include "w32term.h"
  34 #include "w32bdf.h"
  35
  36 #define min(a, b) ((a) < (b) ? (a) : (b))
  37 #define max(a, b) ((a) > (b) ? (a) : (b))
  38
  39 /* 10 planes */
  40 #define BDF_CODEPOINT_HEAP_INITIAL_SIZE (96 * 10)
  41 /* about 96 characters */
  42 #define BDF_BITMAP_HEAP_INITIAL_SIZE    (64 * 96)
  43
  44 HANDLE hbdf_cp_heap = INVALID_HANDLE_VALUE;
  45 HANDLE hbdf_bmp_heap = INVALID_HANDLE_VALUE;
  46
  47 void w32_free_bdf_font(bdffont *fontp);
  48 bdffont *w32_init_bdf_font(char *filename);
  49
  50 cache_bitmap cached_bitmap_slots[BDF_FONT_CACHE_SIZE];
  51 cache_bitmap *pcached_bitmap_latest = cached_bitmap_slots;
  52
  53 #define FONT_CACHE_SLOT_OVER_P(p) ((p) >= cached_bitmap_slots + BDF_FONT_CACHE_SIZE)
  54
  55 static int
  56 search_file_line(char *key, char *start, int len, char **val, char **next)
  57 {
  58   int linelen;
  59   unsigned char *p, *q;
  60
  61   p = memchr(start, '\n', len);
  62   if (!p) return -1;
  63   for (;start < p;start++)
  64     {
  65       if ((*start != ' ') && (*start != '\t')) break;
  66     }
  67   linelen = (char *) p - start + 1;
  68   *next = p + 1;
  69   if (strncmp(start, key, min(strlen(key), linelen)) == 0)
  70     {
  71       *val = start + strlen(key);
  72       return 1;
  73     }
  74
  75   return 0;
  76 }
  77
  78 static int
  79 proceed_file_line(char *key, char *start, int *len, char **val, char **next)
  80 {
  81   int flag = 0;
  82
  83   do {
  84     flag = search_file_line(key, start, *len, val, next);
  85     *len -= (int)(*next - start);
  86     start = *next;
  87   }while(flag == 0);
  88
  89   if (flag == -1) return 0;
  90   return 1;
  91 }
  92
  93 char*
  94 get_quoted_string(char *start, char *end)
  95 {
  96   char *p, *q, *result;
  97
  98   p = memchr(start, '\"', end - start);
  99   if (!p) return NULL;
 100   p++;
 101   q = memchr(p, '\"', end - p);
 102   if (!q) return NULL;
 103
 104   result = (char*) xmalloc(q - p + 1);
 105
 106   memcpy(result, p, q - p);
 107   result[q - p] = '\0';
 108
 109   return result;
 110 }
 111
 112 static int
 113 set_bdf_font_info(bdffont *fontp)
 114 {
 115   unsigned char *start, *p, *q;
 116   int len, flag;
 117   int bbw, bbh, bbx, bby;
 118   int val1;
 119
 120   len = fontp->size;
 121   start = fontp->font;
 122
 123   fontp->yoffset = 0;
 124   fontp->relative_compose = 0;
 125   fontp->default_ascent = 0;
 126
 127   fontp->registry = NULL;
 128   fontp->encoding = NULL;
 129   fontp->slant = NULL;
 130 /*  fontp->width = NULL; */
 131
 132   flag = proceed_file_line("FONTBOUNDINGBOX", start, &len, &p, &q);
 133   if (!flag) return 0;
 134   bbw = strtol(p, &start, 10);
 135   p = start;
 136   bbh = strtol(p, &start, 10);
 137   p = start;
 138   bbx = strtol(p, &start, 10);
 139   p = start;
 140   bby = strtol(p, &start, 10);
 141
 142   fontp->llx = bbx;
 143   fontp->lly = bby;
 144   fontp->urx = bbw + bbx;
 145   fontp->ury = bbh + bby;
 146   fontp->width = bbw;
 147   fontp->height = bbh;
 148   start = q;
 149   flag = proceed_file_line("STARTPROPERTIES", start, &len, &p, &q);
 150   if (!flag) return 1;
 151
 152   flag = 0;
 153
 154   do {
 155     start = q;
 156     if (search_file_line("PIXEL_SIZE", start, len, &p, &q) == 1)
 157       {
 158         val1 = atoi(p);
 159         fontp->pixsz = val1;
 160       }
 161     else if (search_file_line("FONT_ASCENT", start, len, &p, &q) == 1)
 162       {
 163         val1 = atoi(p);
 164         fontp->ury = val1;
 165       }
 166     else if (search_file_line("FONT_DESCENT", start, len, &p, &q) == 1)
 167       {
 168         val1 = atoi(p);
 169         fontp->lly = -val1;
 170       }
 171     else if (search_file_line("_MULE_BASELINE_OFFSET", start, len, &p, &q) == 1)
 172       {
 173         val1 = atoi(p);
 174         fontp->yoffset = -val1;
 175       }
 176     else if (search_file_line("_MULE_RELATIVE_COMPOSE", start, len, &p, &q) == 1)
 177       {
 178         val1 = atoi(p);
 179         fontp->relative_compose = val1;
 180       }
 181     else if (search_file_line("_MULE_DEFAULT_ASCENT", start, len, &p, &q) == 1)
 182       {
 183         val1 = atoi(p);
 184         fontp->default_ascent = val1;
 185       }
 186     else if (search_file_line("CHARSET_REGISTRY", start, len, &p, &q) == 1)
 187       {
 188         fontp->registry = get_quoted_string(p, q);
 189       }
 190     else if (search_file_line("CHARSET_ENCODING", start, len, &p, &q) == 1)
 191       {
 192         fontp->encoding = get_quoted_string(p, q);
 193       }
 194     else if (search_file_line("SLANT", start, len, &p, &q) == 1)
 195       {
 196         fontp->slant = get_quoted_string(p, q);
 197       }
 198 /*
 199     else if (search_file_line("SETWIDTH_NAME", start, len, &p, &q) == 1)
 200       {
 201         fontp->width = get_quoted_string(p, q);
 202       }
 203 */
 204     else
 205       {
 206         flag = search_file_line("ENDPROPERTIES", start, len, &p, &q);
 207       }
 208     if (flag == -1) return 0;
 209     len -= (q - start);
 210   }while(flag == 0);
 211   start = q;
 212   flag = proceed_file_line("CHARS", start, &len, &p, &q);
 213   if (!flag) return 0;
 214   fontp->nchars = atoi(p);
 215   fontp->seeked = q;
 216
 217   return 1;
 218 }
 219
 220 bdffont*
 221 w32_init_bdf_font(char *filename)
 222 {
 223   HANDLE hfile, hfilemap;
 224   bdffont *bdffontp;
 225   unsigned char *font;
 226   BY_HANDLE_FILE_INFORMATION fileinfo;
 227   int i;
 228
 229   if (hbdf_cp_heap == INVALID_HANDLE_VALUE)
 230     hbdf_cp_heap = HeapCreate(0, BDF_CODEPOINT_HEAP_INITIAL_SIZE, 0);
 231   if (hbdf_bmp_heap = INVALID_HANDLE_VALUE)
 232     hbdf_bmp_heap = HeapCreate(0, BDF_BITMAP_HEAP_INITIAL_SIZE, 0);
 233
 234   if (!hbdf_cp_heap || !hbdf_bmp_heap)
 235     error("Fail to create heap for BDF.");
 236
 237   hfile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
 238                      OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 239   if (hfile == INVALID_HANDLE_VALUE) return NULL;
 240   if (!GetFileInformationByHandle(hfile, &fileinfo) ||
 241       (fileinfo.nFileSizeHigh != 0) ||
 242       (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX))
 243     {
 244       CloseHandle(hfile);
 245       error("Fail to open BDF file.");
 246     }
 247   hfilemap = CreateFileMapping(hfile, NULL, PAGE_READONLY, 0, 0, NULL);
 248   if (hfilemap == INVALID_HANDLE_VALUE)
 249     {
 250       CloseHandle(hfile);
 251       error("Can't map font.");
 252     }
 253
 254   font = MapViewOfFile(hfilemap, FILE_MAP_READ, 0, 0, 0);
 255
 256   if (!font)
 257     {
 258       CloseHandle(hfile);
 259       CloseHandle(hfilemap);
 260       error("Can't view font.");
 261     }
 262
 263   bdffontp = (bdffont *) xmalloc(sizeof(bdffont));
 264
 265   for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++)
 266     bdffontp->chtbl[i] = NULL;
 267   bdffontp->size = fileinfo.nFileSizeLow;
 268   bdffontp->font = font;
 269   bdffontp->hfile = hfile;
 270   bdffontp->hfilemap = hfilemap;
 271   bdffontp->filename = (char*) xmalloc(strlen(filename) + 1);
 272   strcpy(bdffontp->filename, filename);
 273
 274   if (!set_bdf_font_info(bdffontp))
 275     {
 276       w32_free_bdf_font(bdffontp);
 277       error("Invalid BDF font!");
 278     }
 279   return bdffontp;
 280 }
 281
 282 void
 283 w32_free_bdf_font(bdffont *fontp)
 284 {
 285   int i, j;
 286   font_char *pch;
 287   cache_bitmap *pcb;
 288
 289   UnmapViewOfFile(fontp->hfilemap);
 290   CloseHandle(fontp->hfilemap);
 291   CloseHandle(fontp->hfile);
 292
 293   if (fontp->registry) xfree(fontp->registry);
 294   if (fontp->encoding) xfree(fontp->encoding);
 295   if (fontp->slant) xfree(fontp->slant);
 296 /*  if (fontp->width) xfree(fontp->width); */
 297
 298   xfree(fontp->filename);
 299   for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++)
 300     {
 301       pch = fontp->chtbl[i];
 302       if (pch)
 303         {
 304           for (j = 0;j < BDF_SECOND_OFFSET_TABLE;j++)
 305             {
 306               pcb = pch[j].pcbmp;
 307               if (pcb)
 308                 {
 309                   if (pcb->pbmp)
 310                     HeapFree(hbdf_bmp_heap, 0, pcb->pbmp);
 311                   pcb->psrc = NULL;
 312             }
 313             }
 314           HeapFree(hbdf_cp_heap, 0, pch);
 315         }
 316     }
 317   xfree(fontp);
 318 }
 319
 320 static font_char*
 321 get_cached_font_char(bdffont *fontp, int index)
 322 {
 323   font_char *pch, *result;
 324   int i;
 325
 326   if (!BDF_CODEPOINT_RANGE_COVER_P(index))
 327     return NULL;
 328
 329   pch = fontp->chtbl[BDF_FIRST_OFFSET(index)];
 330   if (!pch)
 331     return NULL;
 332
 333   result = &pch[BDF_SECOND_OFFSET(index)];
 334
 335   if (!result->offset) return NULL;
 336
 337   return result;
 338 }
 339
 340 static font_char*
 341 cache_char_offset(bdffont *fontp, int index, unsigned char *offset)
 342 {
 343   font_char *pch, *result;
 344   int i;
 345
 346   if (!BDF_CODEPOINT_RANGE_COVER_P(index))
 347     return NULL;
 348
 349   pch = fontp->chtbl[BDF_FIRST_OFFSET(index)];
 350   if (!pch)
 351     {
 352       pch = fontp->chtbl[BDF_FIRST_OFFSET(index)] =
 353         (font_char*) HeapAlloc(hbdf_cp_heap,
 354                                HEAP_ZERO_MEMORY,
 355                                sizeof(font_char) *
 356                                BDF_SECOND_OFFSET_TABLE);
 357       if (!pch) return NULL;
 358       /* memset(pch, 0, sizeof(font_char) * BDF_SECOND_OFFSET_TABLE); */
 359     }
 360
 361   result = &pch[BDF_SECOND_OFFSET(index)];
 362   result->offset = offset;
 363
 364   return result;
 365 }
 366
 367 static font_char*
 368 seek_char(bdffont *fontp, int index)
 369 {
 370   font_char *result;
 371   int len, flag, font_index;
 372   unsigned char *start, *p, *q;
 373
 374   if (!fontp->seeked) return NULL;
 375
 376   start = fontp->seeked;
 377   len = fontp->size - (start - fontp->font);
 378
 379   do {
 380     flag = proceed_file_line("ENCODING", start, &len, &p, &q);
 381     if (!flag)
 382       {
 383         fontp->seeked = NULL;
 384         return NULL;
 385       }
 386     font_index = atoi(p);
 387     result = cache_char_offset(fontp, font_index, q);
 388     if (!result) return NULL;
 389
 390     start = result->offset;
 391   } while (font_index != index);
 392   fontp->seeked = start;
 393
 394   return result;
 395 }
 396
 397 static void
 398 clear_cached_bitmap_slots()
 399 {
 400   int i;
 401   cache_bitmap *p;
 402
 403   p = pcached_bitmap_latest;
 404   for (i = 0;i < BDF_FONT_CLEAR_SIZE;i++)
 405     {
 406       if (p->psrc)
 407         {
 408           if (p->pbmp)
 409             HeapFree(hbdf_bmp_heap, 0, p->pbmp);
 410           p->psrc->pcbmp = NULL;
 411           p->psrc = NULL;
 412         }
 413       p++;
 414       if (FONT_CACHE_SLOT_OVER_P(p))
 415         p = cached_bitmap_slots;
 416     }
 417 }
 418
 419 #define GET_HEX_VAL(x) ((isdigit(x)) ? ((x) - '0') : \
 420                         (((x) >= 'A') && ((x) <= 'F')) ? ((x) - 'A' + 10) : \
 421                         (((x) >= 'a') && ((x) <= 'f')) ? ((x) - 'a' + 10) : \
 422                         (-1))
 423
 424 int
 425 w32_get_bdf_glyph(bdffont *fontp, int index, int size, glyph_struct *glyph)
 426 {
 427   font_char *pch;
 428   unsigned char *start, *p, *q, *bitmapp;
 429   unsigned char val, val1, val2;
 430   int i, j, len, flag, consumed;
 431   int align, rowbytes;
 432
 433   pch = get_cached_font_char(fontp, index);
 434   if (!pch)
 435     {
 436       pch = seek_char(fontp, index);
 437       if (!pch)
 438         return 0;
 439     }
 440
 441   start = pch->offset;
 442
 443   if ((size == 0) && pch->pcbmp)
 444     {
 445       glyph->metric = pch->pcbmp->metric;
 446       return 1;
 447     }
 448
 449   len = fontp->size - (start - fontp->font);
 450
 451   flag = proceed_file_line("DWIDTH", start, &len, &p, &q);
 452   if (!flag)
 453     return 0;
 454   glyph->metric.dwidth = atoi(p);
 455
 456   start = q;
 457   flag = proceed_file_line("BBX", start, &len, &p, &q);
 458   if (!flag)
 459     return 0;
 460   glyph->metric.bbw = strtol(p, &start, 10);
 461   p = start;
 462   glyph->metric.bbh = strtol(p, &start, 10);
 463   p = start;
 464   glyph->metric.bbox = strtol(p, &start, 10);
 465   p = start;
 466   glyph->metric.bboy = strtol(p, &start, 10);
 467
 468   if (size == 0) return 1;
 469
 470   start = q;
 471   flag = proceed_file_line("BITMAP", start, &len, &p, &q);
 472   if (!flag)
 473     return 0;
 474
 475   consumed = 0;
 476   flag = 0;
 477   p = q;
 478   bitmapp = glyph->bitmap;
 479   rowbytes = (glyph->metric.bbw + 7) / 8;
 480   /* DIB requires DWORD alignment.  */
 481   align = sizeof(DWORD) - rowbytes % sizeof(DWORD);
 482   consumed = glyph->metric.bbh * (rowbytes + align);
 483   glyph->bitmap_size = consumed;
 484   glyph->row_byte_size = rowbytes;
 485   if (size < consumed) return 0;
 486
 487   for(i = 0;i < glyph->metric.bbh;i++)
 488     {
 489       q = memchr(p, '\n', len);
 490       if (!q) return 0;
 491       for(j = 0;((q > p) && (j < rowbytes));j++)
 492         {
 493           val1 = GET_HEX_VAL(*p);
 494           if (val1 == -1) return 0;
 495           p++;
 496           val2 = GET_HEX_VAL(*p);
 497           if (val2 == -1) return 0;
 498           p++;
 499           val = (unsigned char)((val1 << 4) | val2);
 500           if (val) flag = 1;
 501           *bitmapp++ = val;
 502         }
 503       for(j = 0;j < align;j++)
 504         *bitmapp++ = 0x00;
 505       p = q + 1;
 506     }
 507
 508   /* If this glyph is white space, return -1. */
 509   if (flag == 0) return -1;
 510
 511   return consumed;
 512 }
 513
 514 static
 515 cache_bitmap*
 516 get_bitmap_with_cache(bdffont *fontp, int index)
 517 {
 518   int bitmap_size, bitmap_real_size;
 519   font_char *pch;
 520   cache_bitmap* pcb;
 521   unsigned char *pbmp;
 522   glyph_struct glyph;
 523
 524   pch = get_cached_font_char(fontp, index);
 525   if (pch)
 526     {
 527       pcb = pch->pcbmp;
 528       if (pcb) return pcb;
 529     }
 530
 531   bitmap_size = ((fontp->urx - fontp->llx) / 8 + 3) * (fontp->ury - fontp->lly)
 532     + 256;
 533   glyph.bitmap = (unsigned char*) alloca(sizeof(unsigned char) * bitmap_size);
 534
 535   bitmap_real_size = w32_get_bdf_glyph(fontp, index, bitmap_size, &glyph);
 536
 537   if (bitmap_real_size == 0)
 538     return NULL;
 539
 540   pch = get_cached_font_char(fontp, index);
 541   if (!pch) return NULL;
 542
 543   if (bitmap_real_size > 0)
 544     {
 545        pbmp = (unsigned char*) HeapAlloc(hbdf_bmp_heap, 0,
 546                                          bitmap_real_size);
 547        if (!pbmp) return NULL;
 548        memcpy(pbmp, glyph.bitmap, bitmap_real_size);
 549     }
 550   else
 551     pbmp = NULL; /* white space character */
 552
 553   pcb = pcached_bitmap_latest;
 554   if (pcb->psrc)
 555     clear_cached_bitmap_slots();
 556
 557   pcb->psrc = pch;
 558   pcb->metric = glyph.metric;
 559   pcb->pbmp = pbmp;
 560   pcb->bitmap_size = glyph.bitmap_size;
 561   pcb->row_byte_size = glyph.row_byte_size;
 562
 563   pch->pcbmp = pcb;
 564
 565   pcached_bitmap_latest++;
 566   if (FONT_CACHE_SLOT_OVER_P(pcached_bitmap_latest))
 567     pcached_bitmap_latest = cached_bitmap_slots;
 568
 569   return pcb;
 570 }
 571
 572 static HBITMAP
 573 create_offscreen_bitmap(HDC hdc, int width, int height, unsigned char **bitsp)
 574 {
 575   HBITMAP hBMP;
 576   struct {
 577     BITMAPINFOHEADER h;
 578     RGBQUAD c[2];
 579   } info;
 580
 581   memset(&info, 0, sizeof(info));
 582   info.h.biSize = sizeof(BITMAPINFOHEADER);
 583   info.h.biWidth = width;
 584   info.h.biHeight = -height;
 585   info.h.biPlanes = 1;
 586   info.h.biBitCount = 1;
 587   info.h.biCompression = BI_RGB;
 588   info.c[1].rgbRed = info.c[1].rgbGreen = info.c[1].rgbBlue = 255;
 589
 590   return CreateDIBSection(hdc, (LPBITMAPINFO)&info,
 591                           DIB_RGB_COLORS, bitsp, NULL, 0);
 592 }
 593
 594 glyph_metric *
 595 w32_BDF_TextMetric(bdffont *fontp, unsigned char *text, int dim)
 596 {
 597   int index;
 598   cache_bitmap *pcb;
 599
 600   if (dim == 1)
 601     index = *text;
 602   else
 603     index = MAKELENDSHORT(text[1], text[0]);
 604
 605   pcb = get_bitmap_with_cache(fontp, index);
 606   if (!pcb)
 607     return NULL;
 608
 609   return &(pcb->metric);
 610 }
 611
 612 int
 613 w32_BDF_TextOut(bdffont *fontp, HDC hdc, int left,
 614                  int top, unsigned char *text, int dim, int bytelen,
 615                  int fixed_pitch_size)
 616 {
 617   int index, btop;
 618   unsigned char *textp;
 619   cache_bitmap *pcb;
 620   HBRUSH hFgBrush, hOrgBrush;
 621   HANDLE horgobj;
 622   UINT textalign;
 623   int width, height;
 624   HDC hCompatDC;
 625   int ret = 1;
 626   static HBITMAP hBMP = 0;
 627   static HDC DIBsection_hdc = 0;
 628   static int DIBsection_width, DIBsection_height;
 629   static unsigned char *bits;
 630
 631   hCompatDC = CreateCompatibleDC(hdc);
 632   if (!hCompatDC)
 633     return 0;
 634
 635   textalign = GetTextAlign(hdc);
 636
 637   hFgBrush = CreateSolidBrush(GetTextColor(hdc));
 638   hOrgBrush = SelectObject(hdc, hFgBrush);
 639
 640   textp = text;
 641
 642   while(bytelen > 0)
 643     {
 644       if (dim == 1)
 645         {
 646           index = *textp++;
 647           bytelen--;
 648         }
 649       else
 650         {
 651           bytelen -= 2;
 652           if (bytelen < 0) break;
 653           index = MAKELENDSHORT(textp[0], textp[1]);
 654           textp += 2;
 655         }
 656       pcb = get_bitmap_with_cache(fontp, index);
 657       if (!pcb)
 658         {
 659           ret = 0;
 660           break;
 661             }
 662       if (pcb->pbmp)
 663         {
 664           width = pcb->metric.bbw;
 665           height = pcb->metric.bbh;
 666
 667           if (!(hBMP
 668                 && (DIBsection_hdc == hdc)
 669                 && (DIBsection_width == width)
 670                 && (DIBsection_height == height)))
 671             {
 672               if (hBMP) DeleteObject(hBMP);
 673               hBMP = create_offscreen_bitmap(hdc, width, height, &bits);
 674               DIBsection_hdc = hdc;
 675               DIBsection_width = width;
 676               DIBsection_height = height;
 677               if (!hBMP) return 0;
 678         }
 679
 680           memcpy(bits, pcb->pbmp, pcb->bitmap_size);
 681
 682       if (textalign & TA_BASELINE)
 683           btop = top - (pcb->metric.bbh + pcb->metric.bboy);
 684       else if (textalign & TA_BOTTOM)
 685           btop = top - pcb->metric.bbh;
 686       else
 687           btop = top;
 688
 689           horgobj = SelectObject(hCompatDC, hBMP);
 690           BitBlt(hdc, left, btop, width, height, hCompatDC, 0, 0, 0xE20746);
 691           SelectObject(hCompatDC, horgobj);
 692         }
 693
 694       if (fixed_pitch_size)
 695         left += fixed_pitch_size;
 696       else
 697         left += pcb->metric.dwidth;
 698     }
 699
 700   DeleteDC(hCompatDC);
 701
 702   SelectObject(hdc, hOrgBrush);
 703   DeleteObject(hFgBrush);
 704
 705   return ret;
 706 }
 707
 708 struct font_info *w32_load_bdf_font (struct frame *f, char *fontname,
 709                                      int size, char* filename)
 710 {
 711   struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
 712   struct font_info *fontp;
 713   XFontStruct *font;
 714   bdffont* bdf_font;
 715
 716   bdf_font = w32_init_bdf_font (filename);
 717
 718   if (!bdf_font) return NULL;
 719
 720   font = (XFontStruct *) xmalloc (sizeof (XFontStruct));
 721   bzero (font, sizeof (*font));
 722
 723   font->bdf = bdf_font;
 724   font->hfont = 0;
 725
 726   /* NTEMACS_TODO: Better way of determining if a font is double byte
 727      or not. */
 728   font->double_byte_p = bdf_font->nchars > 255 ? 1 : 0;
 729
 730   w32_cache_char_metrics (font);
 731
 732   /* Do we need to create the table?  */
 733   if (dpyinfo->font_table_size == 0)
 734     {
 735       dpyinfo->font_table_size = 16;
 736       dpyinfo->font_table
 737         = (struct font_info *) xmalloc (dpyinfo->font_table_size
 738                                         * sizeof (struct font_info));
 739     }
 740   /* Do we need to grow the table?  */
 741   else if (dpyinfo->n_fonts
 742            >= dpyinfo->font_table_size)
 743     {
 744       dpyinfo->font_table_size *= 2;
 745       dpyinfo->font_table
 746         = (struct font_info *) xrealloc (dpyinfo->font_table,
 747                                          (dpyinfo->font_table_size
 748                                           * sizeof (struct font_info)));
 749     }
 750
 751   fontp = dpyinfo->font_table + dpyinfo->n_fonts;
 752
 753   /* Now fill in the slots of *FONTP.  */
 754   BLOCK_INPUT;
 755   fontp->font = font;
 756   fontp->font_idx = dpyinfo->n_fonts;
 757   fontp->name = (char *) xmalloc (strlen (fontname) + 1);
 758   bcopy (fontname, fontp->name, strlen (fontname) + 1);
 759   fontp->full_name = fontp->name;
 760   fontp->size = FONT_WIDTH (font);
 761   fontp->height = FONT_HEIGHT (font);
 762
 763     /* The slot `encoding' specifies how to map a character
 764        code-points (0x20..0x7F or 0x2020..0x7F7F) of each charset to
 765        the font code-points (0:0x20..0x7F, 1:0xA0..0xFF, 0:0x2020..0x7F7F,
 766        the font code-points (0:0x20..0x7F, 1:0xA0..0xFF,
 767        0:0x2020..0x7F7F, 1:0xA0A0..0xFFFF, 3:0x20A0..0x7FFF, or
 768        2:0xA020..0xFF7F).  For the moment, we don't know which charset
 769        uses this font.  So, we set informatoin in fontp->encoding[1]
 770        which is never used by any charset.  If mapping can't be
 771        decided, set FONT_ENCODING_NOT_DECIDED.  */
 772     fontp->encoding[1] = FONT_ENCODING_NOT_DECIDED;
 773     fontp->baseline_offset = bdf_font->yoffset;
 774     fontp->relative_compose = bdf_font->relative_compose;
 775     fontp->default_ascent = bdf_font->default_ascent;
 776
 777     UNBLOCK_INPUT;
 778     dpyinfo->n_fonts++;
 779     return fontp;
 780 }
 781
 782 /* Check a file for an XFLD string describing it.  */
 783 int w32_BDF_to_x_font (char *file, char* xstr, int len)
 784 {
 785   HANDLE hfile, hfilemap;
 786   BY_HANDLE_FILE_INFORMATION fileinfo;
 787   char *font, *start, *p, *q;
 788   int flag, size, retval = 0;
 789
 790   hfile = CreateFile (file, GENERIC_READ, FILE_SHARE_READ, NULL,
 791                       OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 792   if (hfile == INVALID_HANDLE_VALUE) return 0;
 793   if (!GetFileInformationByHandle(hfile, &fileinfo) ||
 794       (fileinfo.nFileSizeHigh != 0) ||
 795       (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX))
 796     {
 797       CloseHandle (hfile);
 798       return 0;
 799     }
 800   size = fileinfo.nFileSizeLow;
 801
 802   hfilemap = CreateFileMapping (hfile, NULL, PAGE_READONLY, 0, 0, NULL);
 803   if (hfilemap == INVALID_HANDLE_VALUE)
 804     {
 805       CloseHandle (hfile);
 806       return 0;
 807     }
 808
 809   font = MapViewOfFile (hfilemap, FILE_MAP_READ, 0, 0, 0);
 810   if (!font)
 811     {
 812       CloseHandle (hfile);
 813       CloseHandle (hfilemap);
 814       return 0;
 815     }
 816   start = font;
 817
 818   flag = proceed_file_line ("FONT ", start, &size, &p, &q);
 819   if (flag)
 820     {
 821       /* If font provides a description of itself, check it is a
 822          full XLFD before accepting it.  */
 823       int count = 0;
 824       char *s;
 825
 826       for (s = p; s < q; s++)
 827         if (*s == '\n')
 828           break;
 829         else if (*s == '-')
 830           count++;
 831       if (count == 14 && q - p - 1 <= len)
 832         {
 833           strncpy (xstr, p, q-p-1);
 834           xstr[q-p-1] = '\0';
 835           /* Files may have DOS line ends (ie still ^M on end).  */
 836           if (iscntrl(xstr[q-p-2]))
 837             xstr[q-p-2] = '\0';
 838
 839           retval = 1;
 840         }
 841     }
 842   CloseHandle (hfile);
 843   CloseHandle (hfilemap);
 844   return retval;
 845 }