tools/sfnt2fnt.c

   1 /*
   2  * sfnttofnt.  Bitmap only ttf to Window fnt file converter
   3  *
   4  * Copyright 2004 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <ctype.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28
  29 #ifdef HAVE_FREETYPE
  30
  31 #ifdef HAVE_FT2BUILD_H
  32 #include <ft2build.h>
  33 #endif
  34 #include FT_FREETYPE_H
  35 #include FT_SFNT_NAMES_H
  36 #include FT_TRUETYPE_TABLES_H
  37
  38 #include "wine/unicode.h"
  39 #include "wine/wingdi16.h"
  40 #include "wingdi.h"
  41
  42 #include "pshpack1.h"
  43
  44 typedef struct
  45 {
  46     WORD dfVersion;
  47     DWORD dfSize;
  48     char dfCopyright[60];
  49 } FNT_HEADER;
  50
  51 typedef struct {
  52     WORD width;
  53     DWORD offset;
  54 } CHAR_TABLE_ENTRY;
  55
  56 #include "poppack.h"
  57
  58 static void usage(char **argv)
  59 {
  60     fprintf(stderr, "%s foo.ttf ppem enc dpi def_char avg_width\n", argv[0]);
  61     return;
  62 }
  63
  64 static int lookup_charset(int enc)
  65 {
  66     /* FIXME: make winelib app and use TranslateCharsetInfo */
  67     switch(enc) {
  68     case 1250:
  69         return EE_CHARSET;
  70     case 1251:
  71         return RUSSIAN_CHARSET;
  72     case 1252:
  73         return ANSI_CHARSET;
  74     case 1253:
  75         return GREEK_CHARSET;
  76     case 1254:
  77         return TURKISH_CHARSET;
  78     case 1255:
  79         return HEBREW_CHARSET;
  80     case 1256:
  81         return ARABIC_CHARSET;
  82     case 1257:
  83         return BALTIC_CHARSET;
  84     case 1258:
  85         return VIETNAMESE_CHARSET;
  86     case 437:
  87     case 737:
  88     case 775:
  89     case 850:
  90     case 852:
  91     case 855:
  92     case 857:
  93     case 860:
  94     case 861:
  95     case 862:
  96     case 863:
  97     case 864:
  98     case 865:
  99     case 866:
 100     case 869:
 101         return OEM_CHARSET;
 102     case 874:
 103         return THAI_CHARSET;
 104     case 932:
 105         return SHIFTJIS_CHARSET;
 106     case 936:
 107         return GB2312_CHARSET;
 108     case 949:
 109         return HANGUL_CHARSET;
 110     case 950:
 111         return CHINESEBIG5_CHARSET;
 112     }
 113     fprintf(stderr, "Unknown encoding %d - using OEM_CHARSET\n", enc);
 114
 115     return OEM_CHARSET;
 116 }
 117
 118 static void fill_fontinfo(FT_Face face, int enc, FILE *fp, int dpi, unsigned char def_char, int avg_width)
 119 {
 120     int ascent, il, ppem, descent, width_bytes = 0, space_size, max_width = 0;
 121     FNT_HEADER hdr;
 122     FONTINFO16 fi;
 123     BYTE left_byte, right_byte, byte;
 124     DWORD start;
 125     CHAR_TABLE_ENTRY *dfCharTable;
 126     int i, x, y, x_off, x_end, first_char;
 127     FT_UInt gi;
 128     int num_names;
 129     const union cptable *cptable;
 130     FT_SfntName sfntname;
 131     TT_OS2 *os2;
 132     cptable = wine_cp_get_table(enc);
 133     if(!cptable) {
 134         fprintf(stderr, "Can't find codepage %d\n", enc);
 135         exit(1);
 136     }
 137
 138     if(cptable->info.char_size != 1) {
 139         /* for double byte charsets we actually want to use cp1252 */
 140         cptable = wine_cp_get_table(1252);
 141         if(!cptable) {
 142             fprintf(stderr, "Can't find codepage 1252\n");
 143             exit(1);
 144         }
 145     }
 146
 147     ppem = face->size->metrics.y_ppem;
 148     start = sizeof(FNT_HEADER) + sizeof(FONTINFO16);
 149
 150     if(FT_Load_Char(face, 0xc5, FT_LOAD_DEFAULT)) {
 151         fprintf(stderr, "Can't find Aring\n");
 152         exit(1);
 153     }
 154     ascent = face->glyph->metrics.height >> 6;
 155     descent = ppem - ascent;
 156     if(FT_Load_Char(face, 'M', FT_LOAD_DEFAULT)) {
 157         fprintf(stderr, "Can't find M\n");
 158         exit(1);
 159     }
 160     il = ascent - (face->glyph->metrics.height >> 6);
 161
 162     /* Hack: Courier has no internal leading, nor do any Chinese fonts */
 163     if(!strcmp(face->family_name, "Courier") || enc == 936 || enc == 950)
 164         il = 0;
 165
 166     first_char = FT_Get_First_Char(face, &gi);
 167     if(first_char == 0xd) /* fontforge's first glyph is 0xd, we'll catch this and skip it */
 168         first_char = 32; /* FT_Get_Next_Char for some reason returns too high
 169                             number in this case */
 170
 171     dfCharTable = malloc((255 + 3) * sizeof(*dfCharTable));
 172     memset(dfCharTable, 0, (255 + 3) * sizeof(*dfCharTable));
 173
 174     memset(&fi, 0, sizeof(fi));
 175     fi.dfFirstChar = first_char;
 176     fi.dfLastChar = 0xff;
 177     start += ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar + 3 ) * sizeof(*dfCharTable);
 178
 179     num_names = FT_Get_Sfnt_Name_Count(face);
 180     for(i = 0; i <num_names; i++) {
 181         FT_Get_Sfnt_Name(face, i, &sfntname);
 182         if(sfntname.platform_id == 1 && sfntname.encoding_id == 0 &&
 183            sfntname.language_id == 0 && sfntname.name_id == 0) {
 184             size_t len = min( sfntname.string_len, sizeof(hdr.dfCopyright)-1 );
 185             memcpy(hdr.dfCopyright, sfntname.string, len);
 186             hdr.dfCopyright[len] = 0;
 187         }
 188     }
 189
 190     os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
 191     for(i = first_char; i < 0x100; i++) {
 192         gi = FT_Get_Char_Index(face, cptable->sbcs.cp2uni[i]);
 193         if(gi == 0)
 194             fprintf(stderr, "Missing glyph for char %04x\n", cptable->sbcs.cp2uni[i]);
 195         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 196             fprintf(stderr, "error loading char %d - bad news!\n", i);
 197             continue;
 198         }
 199         dfCharTable[i].width = face->glyph->metrics.horiAdvance >> 6;
 200         dfCharTable[i].offset = start + (width_bytes * ppem);
 201         width_bytes += ((face->glyph->metrics.horiAdvance >> 6) + 7) >> 3;
 202         if(max_width < (face->glyph->metrics.horiAdvance >> 6))
 203             max_width = face->glyph->metrics.horiAdvance >> 6;
 204     }
 205     /* space */
 206     space_size = (ppem + 3) / 4;
 207     dfCharTable[i].width = space_size;
 208     dfCharTable[i].offset = start + (width_bytes * ppem);
 209     width_bytes += (space_size + 7) >> 3;
 210     /* sentinel */
 211     dfCharTable[++i].width = 0;
 212     dfCharTable[i].offset = start + (width_bytes * ppem);
 213
 214     fi.dfType = 0;
 215     fi.dfPoints = ((ppem - il) * 72 + dpi/2) / dpi;
 216     fi.dfVertRes = dpi;
 217     fi.dfHorizRes = dpi;
 218     fi.dfAscent = ascent;
 219     fi.dfInternalLeading = il;
 220     fi.dfExternalLeading = 0;
 221     fi.dfItalic = (face->style_flags & FT_STYLE_FLAG_ITALIC) ? 1 : 0;
 222     fi.dfUnderline = 0;
 223     fi.dfStrikeOut = 0;
 224     fi.dfWeight = os2->usWeightClass;
 225     fi.dfCharSet = lookup_charset(enc);
 226     fi.dfPixWidth = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH) ?
 227         avg_width : 0;
 228     fi.dfPixHeight = ppem;
 229     fi.dfPitchAndFamily = FT_IS_FIXED_WIDTH(face) ? 0 : TMPF_FIXED_PITCH;
 230     switch(os2->panose[PAN_FAMILYTYPE_INDEX]) {
 231     case PAN_FAMILY_SCRIPT:
 232         fi.dfPitchAndFamily |= FF_SCRIPT;
 233         break;
 234     case PAN_FAMILY_DECORATIVE:
 235     case PAN_FAMILY_PICTORIAL:
 236         fi.dfPitchAndFamily |= FF_DECORATIVE;
 237         break;
 238     case PAN_FAMILY_TEXT_DISPLAY:
 239         if(fi.dfPitchAndFamily == 0) /* fixed */
 240             fi.dfPitchAndFamily = FF_MODERN;
 241         else {
 242             switch(os2->panose[PAN_SERIFSTYLE_INDEX]) {
 243             case PAN_SERIF_NORMAL_SANS:
 244             case PAN_SERIF_OBTUSE_SANS:
 245             case PAN_SERIF_PERP_SANS:
 246                 fi.dfPitchAndFamily |= FF_SWISS;
 247                 break;
 248             default:
 249                 fi.dfPitchAndFamily |= FF_ROMAN;
 250             }
 251         }
 252         break;
 253     default:
 254         fi.dfPitchAndFamily |= FF_DONTCARE;
 255     }
 256
 257     fi.dfAvgWidth = avg_width;
 258     fi.dfMaxWidth = max_width;
 259     fi.dfDefaultChar = def_char - fi.dfFirstChar;
 260     fi.dfBreakChar = ' ' - fi.dfFirstChar;
 261     fi.dfWidthBytes = (width_bytes + 1) & ~1;
 262
 263     fi.dfFace = start + fi.dfWidthBytes * ppem;
 264     fi.dfBitsOffset = start;
 265     fi.dfFlags = 0x10; /* DFF_1COLOR */
 266     fi.dfFlags |= FT_IS_FIXED_WIDTH(face) ? 1 : 2; /* DFF_FIXED : DFF_PROPORTIONAL */
 267
 268     hdr.dfVersion = 0x300;
 269     hdr.dfSize = start + fi.dfWidthBytes * ppem + strlen(face->family_name) + 1;
 270     fwrite(&hdr, sizeof(hdr), 1, fp);
 271     fwrite(&fi, sizeof(fi), 1, fp);
 272     fwrite(dfCharTable + fi.dfFirstChar, sizeof(*dfCharTable), ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar) + 3, fp);
 273
 274     for(i = first_char; i < 0x100; i++) {
 275         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 276             continue;
 277         }
 278         assert(dfCharTable[i].width == face->glyph->metrics.horiAdvance >> 6);
 279
 280         for(x = 0; x < ((dfCharTable[i].width + 7) / 8); x++) {
 281             for(y = 0; y < ppem; y++) {
 282                 if(y < ascent - face->glyph->bitmap_top ||
 283                    y >=  face->glyph->bitmap.rows + ascent - face->glyph->bitmap_top) {
 284                     fputc('\0', fp);
 285                     continue;
 286                 }
 287                 x_off = face->glyph->bitmap_left / 8;
 288                 x_end = (face->glyph->bitmap_left + face->glyph->bitmap.width - 1) / 8;
 289                 if(x < x_off || x > x_end) {
 290                     fputc('\0', fp);
 291                     continue;
 292                 }
 293                 if(x == x_off)
 294                     left_byte = 0;
 295                 else
 296                     left_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off - 1];
 297
 298                 /* On the last non-trival output byte (x == x_end) have we got one or two input bytes */
 299                 if(x == x_end && (face->glyph->bitmap_left % 8 != 0) && ((face->glyph->bitmap.width % 8 == 0) || (x != (((face->glyph->bitmap.width) & ~0x7) + face->glyph->bitmap_left) / 8)))
 300                     right_byte = 0;
 301                 else
 302                     right_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off];
 303
 304                 byte = (left_byte << (8 - (face->glyph->bitmap_left & 7))) & 0xff;
 305                 byte |= ((right_byte >> (face->glyph->bitmap_left & 7)) & 0xff);
 306                 fputc(byte, fp);
 307             }
 308         }
 309     }
 310     for(x = 0; x < (space_size + 7) / 8; x++) {
 311         for(y = 0; y < ppem; y++)
 312             fputc('\0', fp);
 313     }
 314
 315     if(width_bytes & 1) {
 316         for(y = 0; y < ppem; y++)
 317             fputc('\0', fp);
 318     }
 319     fprintf(fp, "%s", face->family_name);
 320     fputc('\0', fp);
 321
 322 }
 323
 324
 325 int main(int argc, char **argv)
 326 {
 327     int ppem, enc;
 328     FT_Face face;
 329     FT_Library lib;
 330     int dpi, avg_width;
 331     unsigned int def_char;
 332     FILE *fp;
 333     char output[256];
 334     char name[256];
 335     char *cp;
 336     if(argc != 7) {
 337         usage(argv);
 338         exit(0);
 339     }
 340
 341     ppem = atoi(argv[2]);
 342     enc = atoi(argv[3]);
 343     dpi = atoi(argv[4]);
 344     def_char = atoi(argv[5]);
 345     avg_width = atoi(argv[6]);
 346
 347     if(FT_Init_FreeType(&lib)) {
 348         fprintf(stderr, "ft init failure\n");
 349         exit(1);
 350     }
 351
 352     if(FT_New_Face(lib, argv[1], 0, &face)) {
 353         fprintf(stderr, "Can't open face\n");
 354         usage(argv);
 355         exit(1);
 356     }
 357
 358     if(FT_Set_Pixel_Sizes(face, ppem, ppem)) {
 359         fprintf(stderr, "Can't set size\n");
 360         usage(argv);
 361         exit(1);
 362     }
 363
 364     strcpy(name, face->family_name);
 365     /* FIXME: should add a -o option instead */
 366     for(cp = name; *cp; cp++)
 367     {
 368         if(*cp == ' ') *cp = '_';
 369         else if (*cp >= 'A' && *cp <= 'Z') *cp += 'a' - 'A';
 370     }
 371
 372     sprintf(output, "%s-%d-%d-%d.fnt", name, enc, dpi, ppem);
 373
 374     fp = fopen(output, "w");
 375
 376     fill_fontinfo(face, enc, fp, dpi, def_char, avg_width);
 377     fclose(fp);
 378     exit(0);
 379 }
 380
 381 #else /* HAVE_FREETYPE */
 382
 383 int main(int argc, char **argv)
 384 {
 385     fprintf( stderr, "%s needs to be built with Freetype support\n", argv[0] );
 386     exit(1);
 387 }
 388
 389 #endif /* HAVE_FREETYPE */