[Emacs-diffs] Changes to emacs/src/w32bdf.c [emacs-unicode-2]

[Kenichi Handa]

Index: emacs/src/w32bdf.c
diff -c /dev/null emacs/src/w32bdf.c:1.17.6.1
*** /dev/null   Mon Sep  8 08:49:33 2003
--- emacs/src/w32bdf.c  Mon Sep  8 08:48:14 2003
***************
*** 0 ****
--- 1,868 ----
+ /* Implementation of BDF font handling on the Microsoft W32 API.
+    Copyright (C) 1999 Free Software Foundation, Inc.
+ 
+ This file is part of GNU Emacs.
+ 
+ GNU Emacs is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+ 
+ GNU Emacs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with GNU Emacs; see the file COPYING.  If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.  */
+ 
+ /* Based heavily on code by H. Miyashita for Meadow (a descendant of
+    MULE for W32). */
+ 
+ #include <windows.h>
+ 
+ #ifdef HAVE_CONFIG_H
+ #include <config.h>
+ #endif
+ 
+ #include "lisp.h"
+ #include "character.h"
+ #include "keyboard.h"
+ #include "frame.h"
+ #include "dispextern.h"
+ #include "fontset.h"
+ #include "blockinput.h"
+ #include "w32gui.h"
+ #include "w32term.h"
+ #include "w32bdf.h"
+ 
+ /* 10 planes */
+ #define BDF_CODEPOINT_HEAP_INITIAL_SIZE (96 * 10)
+ /* about 96 characters */
+ #define BDF_BITMAP_HEAP_INITIAL_SIZE    (64 * 96)
+ 
+ HANDLE hbdf_cp_heap = INVALID_HANDLE_VALUE;
+ HANDLE hbdf_bmp_heap = INVALID_HANDLE_VALUE;
+ 
+ void w32_free_bdf_font(bdffont *fontp);
+ bdffont *w32_init_bdf_font(char *filename);
+ 
+ cache_bitmap cached_bitmap_slots[BDF_FONT_CACHE_SIZE];
+ cache_bitmap *pcached_bitmap_latest = cached_bitmap_slots;
+ 
+ #define FONT_CACHE_SLOT_OVER_P(p) ((p) >= cached_bitmap_slots + 
BDF_FONT_CACHE_SIZE)
+ 
+ static int
+ search_file_line(char *key, char *start, int len, char **val, char **next)
+ {
+   unsigned int linelen;
+   unsigned char *p;
+ 
+   p = memchr(start, '\n', len);
+   if (!p) return -1;
+   for (;(unsigned char *)start < p;start++)
+     {
+       if ((*start != ' ') && (*start != '\t')) break;
+     }
+   linelen = (char *) p - start + 1;
+   *next = p + 1;
+   if (strncmp(start, key, min(strlen(key), linelen)) == 0)
+     {
+       *val = start + strlen(key);
+       return 1;
+     }
+ 
+   return 0;
+ }
+ 
+ static int
+ proceed_file_line(char *key, char *start, int *len, char **val, char **next)
+ {
+   int flag = 0;
+ 
+   do {
+     flag = search_file_line(key, start, *len, val, next);
+     *len -= (int)(*next - start);
+     start = *next;
+   }while(flag == 0);
+ 
+   if (flag == -1) return 0;
+   return 1;
+ }
+ 
+ char*
+ get_quoted_string(char *start, char *end)
+ {
+   char *p, *q, *result;
+ 
+   p = memchr(start, '\"', end - start);
+   if (!p) return NULL;
+   p++;
+   q = memchr(p, '\"', end - p);
+   if (!q) return NULL;
+ 
+   result = (char*) xmalloc(q - p + 1);
+ 
+   memcpy(result, p, q - p);
+   result[q - p] = '\0';
+ 
+   return result;
+ }
+ 
+ static int
+ set_bdf_font_info(bdffont *fontp)
+ {
+   unsigned char *start, *p, *q;
+   int len, flag;
+   int bbw, bbh, bbx, bby;
+   int val1;
+ 
+   len = fontp->size;
+   start = fontp->font;
+ 
+   fontp->yoffset = 0;
+   fontp->relative_compose = 0;
+   fontp->default_ascent = 0;
+ 
+   fontp->registry = NULL;
+   fontp->encoding = NULL;
+   fontp->slant = NULL;
+ /*  fontp->width = NULL; */
+ 
+   flag = proceed_file_line("FONTBOUNDINGBOX", start, &len,
+                          (char **)&p, (char **)&q);
+   if (!flag) return 0;
+   bbw = strtol(p, (char **)&start, 10);
+   p = start;
+   bbh = strtol(p, (char **)&start, 10);
+   p = start;
+   bbx = strtol(p, (char **)&start, 10);
+   p = start;
+   bby = strtol(p, (char **)&start, 10);
+ 
+   fontp->llx = bbx;
+   fontp->lly = bby;
+   fontp->urx = bbw + bbx;
+   fontp->ury = bbh + bby;
+   fontp->width = bbw;
+   fontp->height = bbh;
+   start = q;
+   flag = proceed_file_line("STARTPROPERTIES", start, &len,
+                          (char **)&p, (char **)&q);
+   if (!flag) return 1;
+ 
+   flag = 0;
+ 
+   do {
+     start = q;
+     if (search_file_line("PIXEL_SIZE", start, len,
+                        (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+         fontp->pixsz = val1;
+       }
+     else if (search_file_line("FONT_ASCENT", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+       fontp->ury = val1;
+       }
+     else if (search_file_line("FONT_DESCENT", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+       fontp->lly = -val1;
+       }
+     else if (search_file_line("_MULE_BASELINE_OFFSET", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+       fontp->yoffset = -val1;
+       }
+     else if (search_file_line("_MULE_RELATIVE_COMPOSE", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+       fontp->relative_compose = val1;
+       }
+     else if (search_file_line("_MULE_DEFAULT_ASCENT", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+       val1 = atoi(p);
+       fontp->default_ascent = val1;
+       }
+     else if (search_file_line("CHARSET_REGISTRY", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+         fontp->registry = get_quoted_string(p, q);
+       }
+     else if (search_file_line("CHARSET_ENCODING", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+         fontp->encoding = get_quoted_string(p, q);
+       }
+     else if (search_file_line("SLANT", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+         fontp->slant = get_quoted_string(p, q);
+       }
+ /*
+     else if (search_file_line("SETWIDTH_NAME", start, len,
+                             (char **)&p, (char **)&q) == 1)
+       {
+         fontp->width = get_quoted_string(p, q);
+       }
+ */
+     else
+       {
+       flag = search_file_line("ENDPROPERTIES", start, len,
+                               (char **)&p, (char **)&q);
+       }
+     if (flag == -1) return 0;
+     len -= (q - start);
+   }while(flag == 0);
+   start = q;
+   flag = proceed_file_line("CHARS", start, &len, (char **)&p, (char **)&q);
+   if (!flag) return 0;
+   fontp->nchars = atoi(p);
+   fontp->seeked = q;
+ 
+   return 1;
+ }
+ 
+ bdffont*
+ w32_init_bdf_font(char *filename)
+ {
+   HANDLE hfile, hfilemap;
+   bdffont *bdffontp;
+   unsigned char *font;
+   BY_HANDLE_FILE_INFORMATION fileinfo;
+   int i;
+ 
+   if (hbdf_cp_heap == INVALID_HANDLE_VALUE)
+     hbdf_cp_heap = HeapCreate(0, BDF_CODEPOINT_HEAP_INITIAL_SIZE, 0);
+   if (hbdf_bmp_heap == INVALID_HANDLE_VALUE)
+     hbdf_bmp_heap = HeapCreate(0, BDF_BITMAP_HEAP_INITIAL_SIZE, 0);
+ 
+   if (!hbdf_cp_heap || !hbdf_bmp_heap)
+     error("Fail to create heap for BDF.");
+ 
+   hfile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
+                    OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+   if (hfile == INVALID_HANDLE_VALUE) return NULL;
+   if (!GetFileInformationByHandle(hfile, &fileinfo) ||
+       (fileinfo.nFileSizeHigh != 0) ||
+       (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX))
+     {
+       CloseHandle(hfile);
+       error("Fail to open BDF file.");
+     }
+   hfilemap = CreateFileMapping(hfile, NULL, PAGE_READONLY, 0, 0, NULL);
+   if (hfilemap == INVALID_HANDLE_VALUE)
+     {
+       CloseHandle(hfile);
+       error("Can't map font.");
+     }
+ 
+   font = MapViewOfFile(hfilemap, FILE_MAP_READ, 0, 0, 0);
+ 
+   if (!font)
+     {
+       CloseHandle(hfile);
+       CloseHandle(hfilemap);
+       error("Can't view font.");
+     }
+ 
+   bdffontp = (bdffont *) xmalloc(sizeof(bdffont));
+ 
+   for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++)
+     bdffontp->chtbl[i] = NULL;
+   bdffontp->size = fileinfo.nFileSizeLow;
+   bdffontp->font = font;
+   bdffontp->hfile = hfile;
+   bdffontp->hfilemap = hfilemap;
+   bdffontp->filename = (char*) xmalloc(strlen(filename) + 1);
+   strcpy(bdffontp->filename, filename);
+ 
+   if (!set_bdf_font_info(bdffontp))
+     {
+       w32_free_bdf_font(bdffontp);
+       error("Invalid BDF font!");
+     }
+   return bdffontp;
+ }
+ 
+ void
+ w32_free_bdf_font(bdffont *fontp)
+ {
+   int i, j;
+   font_char *pch;
+   cache_bitmap *pcb;
+ 
+   UnmapViewOfFile(fontp->hfilemap);
+   CloseHandle(fontp->hfilemap);
+   CloseHandle(fontp->hfile);
+ 
+   if (fontp->registry) xfree(fontp->registry);
+   if (fontp->encoding) xfree(fontp->encoding);
+   if (fontp->slant) xfree(fontp->slant);
+ /*  if (fontp->width) xfree(fontp->width); */
+ 
+   xfree(fontp->filename);
+   for(i = 0;i < BDF_FIRST_OFFSET_TABLE;i++)
+     {
+       pch = fontp->chtbl[i];
+       if (pch)
+       {
+         for (j = 0;j < BDF_SECOND_OFFSET_TABLE;j++)
+           {
+             pcb = pch[j].pcbmp;
+             if (pcb)
+               {
+                 if (pcb->pbmp)
+                   HeapFree(hbdf_bmp_heap, 0, pcb->pbmp);
+                 pcb->psrc = NULL;
+           }
+           }
+         HeapFree(hbdf_cp_heap, 0, pch);
+         }
+     }
+   xfree(fontp);
+ }
+ 
+ static font_char*
+ get_cached_font_char(bdffont *fontp, int index)
+ {
+   font_char *pch, *result;
+ 
+   if (!BDF_CODEPOINT_RANGE_COVER_P(index))
+     return NULL;
+ 
+   pch = fontp->chtbl[BDF_FIRST_OFFSET(index)];
+   if (!pch)
+     return NULL;
+ 
+   result = &pch[BDF_SECOND_OFFSET(index)];
+ 
+   if (!result->offset) return NULL;
+ 
+   return result;
+ }
+ 
+ static font_char*
+ cache_char_offset(bdffont *fontp, int index, unsigned char *offset)
+ {
+   font_char *pch, *result;
+ 
+   if (!BDF_CODEPOINT_RANGE_COVER_P(index))
+     return NULL;
+ 
+   pch = fontp->chtbl[BDF_FIRST_OFFSET(index)];
+   if (!pch)
+     {
+       pch = fontp->chtbl[BDF_FIRST_OFFSET(index)] =
+       (font_char*) HeapAlloc(hbdf_cp_heap,
+                              HEAP_ZERO_MEMORY,
+                              sizeof(font_char) *
+                                BDF_SECOND_OFFSET_TABLE);
+       if (!pch) return NULL;
+       /* memset(pch, 0, sizeof(font_char) * BDF_SECOND_OFFSET_TABLE); */
+     }
+ 
+   result = &pch[BDF_SECOND_OFFSET(index)];
+   result->offset = offset;
+ 
+   return result;
+ }
+ 
+ static font_char*
+ seek_char(bdffont *fontp, int index)
+ {
+   font_char *result;
+   int len, flag, font_index;
+   unsigned char *start, *p, *q;
+ 
+   if (!fontp->seeked) return NULL;
+ 
+   start = fontp->seeked;
+   len = fontp->size - (start - fontp->font);
+ 
+   do {
+     flag = proceed_file_line("ENCODING", start, &len,
+                            (char **)&p, (char **)&q);
+     if (!flag)
+       {
+       fontp->seeked = NULL;
+       return NULL;
+       }
+     font_index = atoi(p);
+     result = cache_char_offset(fontp, font_index, q);
+     if (!result) return NULL;
+ 
+     start = result->offset;
+   } while (font_index != index);
+   fontp->seeked = start;
+ 
+   return result;
+ }
+ 
+ static void
+ clear_cached_bitmap_slots()
+ {
+   int i;
+   cache_bitmap *p;
+ 
+   p = pcached_bitmap_latest;
+   for (i = 0;i < BDF_FONT_CLEAR_SIZE;i++)
+     {
+       if (p->psrc)
+       {
+         if (p->pbmp)
+           HeapFree(hbdf_bmp_heap, 0, p->pbmp);
+         p->psrc->pcbmp = NULL;
+         p->psrc = NULL;
+       }
+       p++;
+       if (FONT_CACHE_SLOT_OVER_P(p))
+       p = cached_bitmap_slots;
+     }
+ }
+ 
+ #define GET_HEX_VAL(x) ((isdigit(x)) ? ((x) - '0') : \
+                       (((x) >= 'A') && ((x) <= 'F')) ? ((x) - 'A' + 10) : \
+                       (((x) >= 'a') && ((x) <= 'f')) ? ((x) - 'a' + 10) : \
+                       (-1))
+ 
+ int
+ w32_get_bdf_glyph(bdffont *fontp, int index, int size, glyph_struct *glyph)
+ {
+   font_char *pch;
+   unsigned char *start, *p, *q, *bitmapp;
+   unsigned char val, val1, val2;
+   int i, j, len, flag, consumed;
+   int align, rowbytes;
+ 
+   pch = get_cached_font_char(fontp, index);
+   if (!pch)
+     {
+       pch = seek_char(fontp, index);
+       if (!pch)
+         return 0;
+     }
+ 
+   start = pch->offset;
+ 
+   if ((size == 0) && pch->pcbmp)
+     {
+       glyph->metric = pch->pcbmp->metric;
+       return 1;
+     }
+ 
+   len = fontp->size - (start - fontp->font);
+ 
+   flag = proceed_file_line("DWIDTH", start, &len, (char **)&p, (char **)&q);
+   if (!flag)
+     return 0;
+   glyph->metric.dwidth = atoi(p);
+ 
+   start = q;
+   flag = proceed_file_line("BBX", start, &len, (char **)&p, (char **)&q);
+   if (!flag)
+     return 0;
+   glyph->metric.bbw = strtol(p, (char **)&start, 10);
+   p = start;
+   glyph->metric.bbh = strtol(p, (char **)&start, 10);
+   p = start;
+   glyph->metric.bbox = strtol(p, (char **)&start, 10);
+   p = start;
+   glyph->metric.bboy = strtol(p, (char **)&start, 10);
+ 
+   if (size == 0) return 1;
+ 
+   start = q;
+   flag = proceed_file_line("BITMAP", start, &len, (char **)&p, (char **)&q);
+   if (!flag)
+     return 0;
+ 
+   consumed = 0;
+   flag = 0;
+   p = q;
+   bitmapp = glyph->bitmap;
+   rowbytes = (glyph->metric.bbw + 7) / 8;
+   /* DIB requires DWORD alignment.  */
+   align = sizeof(DWORD) - rowbytes % sizeof(DWORD);
+   consumed = glyph->metric.bbh * (rowbytes + align);
+   glyph->bitmap_size = consumed;
+   glyph->row_byte_size = rowbytes;
+   if (size < consumed) return 0;
+ 
+   for(i = 0;i < glyph->metric.bbh;i++)
+     {
+       q = memchr(p, '\n', len);
+       if (!q) return 0;
+       for(j = 0;((q > p) && (j < rowbytes));j++)
+       {
+         int ival = GET_HEX_VAL(*p);
+ 
+         if (ival == -1) return 0;
+         val1 = ival;
+         p++;
+         ival = GET_HEX_VAL(*p);
+         if (ival == -1) return 0;
+         val2 = ival;
+         p++;
+         val = (unsigned char)((val1 << 4) | val2);
+         if (val) flag = 1;
+         *bitmapp++ = val;
+       }
+       for(j = 0;j < align;j++)
+       *bitmapp++ = 0x00;
+       p = q + 1;
+     }
+ 
+   /* If this glyph is white space, return -1. */
+   if (flag == 0) return -1;
+ 
+   return consumed;
+ }
+ 
+ static
+ cache_bitmap*
+ get_bitmap_with_cache(bdffont *fontp, int index)
+ {
+   int bitmap_size, bitmap_real_size;
+   font_char *pch;
+   cache_bitmap* pcb;
+   unsigned char *pbmp;
+   glyph_struct glyph;
+ 
+   pch = get_cached_font_char(fontp, index);
+   if (pch)
+     {
+       pcb = pch->pcbmp;
+       if (pcb) return pcb;
+     }
+ 
+   bitmap_size = ((fontp->urx - fontp->llx) / 8 + 3) * (fontp->ury - 
fontp->lly)
+     + 256;
+   glyph.bitmap = (unsigned char*) alloca(sizeof(unsigned char) * bitmap_size);
+ 
+   bitmap_real_size = w32_get_bdf_glyph(fontp, index, bitmap_size, &glyph);
+ 
+   if (bitmap_real_size == 0)
+     return NULL;
+ 
+   pch = get_cached_font_char(fontp, index);
+   if (!pch) return NULL;
+ 
+   if (bitmap_real_size > 0)
+     {
+        pbmp = (unsigned char*) HeapAlloc(hbdf_bmp_heap, 0,
+                                        bitmap_real_size);
+        if (!pbmp) return NULL;
+        memcpy(pbmp, glyph.bitmap, bitmap_real_size);
+     }
+   else
+     pbmp = NULL; /* white space character */
+ 
+   pcb = pcached_bitmap_latest;
+   if (pcb->psrc)
+     clear_cached_bitmap_slots();
+ 
+   pcb->psrc = pch;
+   pcb->metric = glyph.metric;
+   pcb->pbmp = pbmp;
+   pcb->bitmap_size = glyph.bitmap_size;
+   pcb->row_byte_size = glyph.row_byte_size;
+ 
+   pch->pcbmp = pcb;
+ 
+   pcached_bitmap_latest++;
+   if (FONT_CACHE_SLOT_OVER_P(pcached_bitmap_latest))
+     pcached_bitmap_latest = cached_bitmap_slots;
+ 
+   return pcb;
+ }
+ 
+ static HBITMAP
+ create_offscreen_bitmap(HDC hdc, int width, int height, unsigned char **bitsp)
+ {
+   struct {
+     BITMAPINFOHEADER h;
+     RGBQUAD c[2];
+   } info;
+ 
+   memset(&info, 0, sizeof(info));
+   info.h.biSize = sizeof(BITMAPINFOHEADER);
+   info.h.biWidth = width;
+   info.h.biHeight = -height;
+   info.h.biPlanes = 1;
+   info.h.biBitCount = 1;
+   info.h.biCompression = BI_RGB;
+   info.c[1].rgbRed = info.c[1].rgbGreen = info.c[1].rgbBlue = 255;
+ 
+   return CreateDIBSection(hdc, (LPBITMAPINFO)&info,
+                         DIB_RGB_COLORS, bitsp, NULL, 0);
+ }
+ 
+ glyph_metric *
+ w32_BDF_TextMetric(bdffont *fontp, unsigned char *text, int dim)
+ {
+   int index;
+   cache_bitmap *pcb;
+ 
+   if (dim == 1)
+     index = *text;
+   else
+     index = MAKELENDSHORT(text[1], text[0]);
+ 
+   pcb = get_bitmap_with_cache(fontp, index);
+   if (!pcb)
+     return NULL;
+ 
+   return &(pcb->metric);
+ }
+ 
+ int
+ w32_BDF_TextOut(bdffont *fontp, HDC hdc, int left,
+                int top, unsigned char *text, int dim, int bytelen,
+                int fixed_pitch_size)
+ {
+   int index, btop;
+   unsigned char *textp;
+   cache_bitmap *pcb;
+   HBRUSH hFgBrush, hOrgBrush;
+   HANDLE horgobj;
+   UINT textalign;
+   int width, height;
+   HDC hCompatDC;
+   int ret = 1;
+   static HBITMAP hBMP = 0;
+   static HDC DIBsection_hdc = 0;
+   static int DIBsection_width, DIBsection_height;
+   static unsigned char *bits;
+ 
+   hCompatDC = CreateCompatibleDC(hdc);
+   if (!hCompatDC)
+     return 0;
+ 
+   textalign = GetTextAlign(hdc);
+ 
+   hFgBrush = CreateSolidBrush(GetTextColor(hdc));
+   hOrgBrush = SelectObject(hdc, hFgBrush);
+ 
+   textp = text;
+ 
+   while(bytelen > 0)
+     {
+       if (dim == 1)
+       {
+         index = *textp++;
+         bytelen--;
+       }
+       else
+       {
+         bytelen -= 2;
+         if (bytelen < 0) break;
+         index = MAKELENDSHORT(textp[0], textp[1]);
+         textp += 2;
+       }
+       pcb = get_bitmap_with_cache(fontp, index);
+       if (!pcb)
+       {
+         ret = 0;
+         break;
+           }
+       if (pcb->pbmp)
+       {
+         width = pcb->metric.bbw;
+         height = pcb->metric.bbh;
+ 
+         if (!(hBMP
+               && (DIBsection_hdc == hdc)
+               && (DIBsection_width == width)
+               && (DIBsection_height == height)))
+           {
+             if (hBMP) DeleteObject(hBMP);
+             hBMP = create_offscreen_bitmap(hdc, width, height, &bits);
+             DIBsection_hdc = hdc;
+             DIBsection_width = width;
+             DIBsection_height = height;
+             if (!hBMP) return 0;
+       }
+ 
+         memcpy(bits, pcb->pbmp, pcb->bitmap_size);
+ 
+       if (textalign & TA_BASELINE)
+         btop = top - (pcb->metric.bbh + pcb->metric.bboy);
+       else if (textalign & TA_BOTTOM)
+         btop = top - pcb->metric.bbh;
+       else
+         btop = top;
+ 
+         horgobj = SelectObject(hCompatDC, hBMP);
+         BitBlt(hdc, left, btop, width, height, hCompatDC, 0, 0, 0xE20746);
+         SelectObject(hCompatDC, horgobj);
+       }
+ 
+       if (fixed_pitch_size)
+       left += fixed_pitch_size;
+       else
+       left += pcb->metric.dwidth;
+     }
+ 
+   DeleteDC(hCompatDC);
+ 
+   SelectObject(hdc, hOrgBrush);
+   DeleteObject(hFgBrush);
+ 
+   return ret;
+ }
+ 
+ struct font_info *w32_load_bdf_font (struct frame *f, char *fontname,
+                                      int size, char* filename)
+ {
+   struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
+   struct font_info *fontp;
+   XFontStruct *font;
+   bdffont* bdf_font;
+ 
+   bdf_font = w32_init_bdf_font (filename);
+ 
+   if (!bdf_font) return NULL;
+ 
+   font = (XFontStruct *) xmalloc (sizeof (XFontStruct));
+   bzero (font, sizeof (*font));
+ 
+   font->bdf = bdf_font;
+   font->hfont = 0;
+ 
+   /* NTEMACS_TODO: Better way of determining if a font is double byte
+      or not. */
+   font->double_byte_p = bdf_font->nchars > 255 ? 1 : 0;
+ 
+   w32_cache_char_metrics (font);
+ 
+   /* Do we need to create the table?  */
+   if (dpyinfo->font_table_size == 0)
+     {
+       dpyinfo->font_table_size = 16;
+       dpyinfo->font_table
+         = (struct font_info *) xmalloc (dpyinfo->font_table_size
+                                         * sizeof (struct font_info));
+     }
+   /* Do we need to grow the table?  */
+   else if (dpyinfo->n_fonts
+            >= dpyinfo->font_table_size)
+     {
+       dpyinfo->font_table_size *= 2;
+       dpyinfo->font_table
+         = (struct font_info *) xrealloc (dpyinfo->font_table,
+                                          (dpyinfo->font_table_size
+                                           * sizeof (struct font_info)));
+     }
+ 
+   fontp = dpyinfo->font_table + dpyinfo->n_fonts;
+ 
+   /* Now fill in the slots of *FONTP.  */
+   BLOCK_INPUT;
+   fontp->font = font;
+   fontp->font_idx = dpyinfo->n_fonts;
+   fontp->name = (char *) xmalloc (strlen (fontname) + 1);
+   bcopy (fontname, fontp->name, strlen (fontname) + 1);
+   fontp->full_name = fontp->name;
+   fontp->size = FONT_WIDTH (font);
+   fontp->height = FONT_HEIGHT (font);
+ 
+     /* The slot `encoding' specifies how to map a character
+        code-points (0x20..0x7F or 0x2020..0x7F7F) of each charset to
+        the font code-points (0:0x20..0x7F, 1:0xA0..0xFF, 0:0x2020..0x7F7F,
+        the font code-points (0:0x20..0x7F, 1:0xA0..0xFF,
+        0:0x2020..0x7F7F, 1:0xA0A0..0xFFFF, 3:0x20A0..0x7FFF, or
+        2:0xA020..0xFF7F).  For the moment, we don't know which charset
+        uses this font.  So, we set informatoin in fontp->encoding[1]
+        which is never used by any charset.  If mapping can't be
+        decided, set FONT_ENCODING_NOT_DECIDED.  */
+     fontp->encoding[1] = FONT_ENCODING_NOT_DECIDED;
+     fontp->baseline_offset = bdf_font->yoffset;
+     fontp->relative_compose = bdf_font->relative_compose;
+     fontp->default_ascent = bdf_font->default_ascent;
+ 
+     /* Set global flag fonts_changed_p to non-zero if the font loaded
+        has a character with a smaller width than any other character
+        before, or if the font loaded has a smaller height than any
+        other font loaded before.  If this happens, it will make a
+        glyph matrix reallocation necessary.  */
+     fonts_changed_p |= x_compute_min_glyph_bounds (f);
+ 
+     UNBLOCK_INPUT;
+     dpyinfo->n_fonts++;
+     return fontp;
+ }
+ 
+ /* Check a file for an XLFD string describing it.  */
+ int w32_BDF_to_x_font (char *file, char* xstr, int len)
+ {
+   HANDLE hfile, hfilemap;
+   BY_HANDLE_FILE_INFORMATION fileinfo;
+   char *font, *start, *p, *q;
+   int flag, size, retval = 0;
+ 
+   hfile = CreateFile (file, GENERIC_READ, FILE_SHARE_READ, NULL,
+                       OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+   if (hfile == INVALID_HANDLE_VALUE) return 0;
+   if (!GetFileInformationByHandle(hfile, &fileinfo) ||
+       (fileinfo.nFileSizeHigh != 0) ||
+       (fileinfo.nFileSizeLow > BDF_FILE_SIZE_MAX))
+     {
+       CloseHandle (hfile);
+       return 0;
+     }
+   size = fileinfo.nFileSizeLow;
+ 
+   hfilemap = CreateFileMapping (hfile, NULL, PAGE_READONLY, 0, 0, NULL);
+   if (hfilemap == INVALID_HANDLE_VALUE)
+     {
+       CloseHandle (hfile);
+       return 0;
+     }
+ 
+   font = MapViewOfFile (hfilemap, FILE_MAP_READ, 0, 0, 0);
+   if (!font)
+     {
+       CloseHandle (hfile);
+       CloseHandle (hfilemap);
+       return 0;
+     }
+   start = font;
+ 
+   flag = proceed_file_line ("FONT ", start, &size, &p, &q);
+   if (flag)
+     {
+       /* If font provides a description of itself, check it is a
+          full XLFD before accepting it.  */
+       int count = 0;
+       char *s;
+ 
+       for (s = p; s < q; s++)
+         if (*s == '\n')
+           break;
+         else if (*s == '-')
+           count++;
+       if (count == 14 && q - p - 1 <= len)
+         {
+           strncpy (xstr, p, q-p-1);
+           xstr[q-p-1] = '\0';
+           /* Files may have DOS line ends (ie still ^M on end).  */
+           if (iscntrl(xstr[q-p-2]))
+             xstr[q-p-2] = '\0';
+ 
+           retval = 1;
+         }
+     }
+   CloseHandle (hfile);
+   CloseHandle (hfilemap);
+   return retval;
+ }