src/w32bdf.c

   1 /* Implementation of BDF font handling on the Microsoft W32 API.
   2    Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005,
   3                  2006, 2007  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 2, 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 == INVALID_HANDLE_VALUE)
 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 == INVALID_HANDLE_VALUE)
 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) */