2 ttf2png - True Type Font to PNG converter
3 Copyright (c) 2004 Mikkosoft Productions
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include FT_FREETYPE_H
27 unsigned round_to_pot(unsigned);
29 int save_png(char *, char *, int, int);
34 int main(int argc, char **argv)
64 while((o=getopt(argc, argv, "r:s:l:c:o:atvh?ed:"))!=-1)
71 if(!strcmp(optarg, "all"))
78 if(!isdigit(optarg[0]))
82 temp=strtol(optarg, &ptr, 0);
83 if(ptr[0]!=',' || !isdigit(ptr[1]))
87 printf("Not a valid range: %s\n", optarg);
91 end=strtol(ptr+1, NULL, 0);
96 size=strtol(optarg, NULL, 0);
99 cpl=strtol(optarg, NULL, 0);
102 cell=strtol(optarg, NULL, 0);
139 err=FT_Init_FreeType(&freetype);
142 fprintf(stderr, "Couldn't initialize FreeType library\n");
146 err=FT_New_Face(freetype, fn, 0, &face);
149 fprintf(stderr, "Couldn't load font file\n");
150 if(err==FT_Err_Unknown_File_Format)
151 fprintf(stderr, "Unknown file format\n");
157 const char *name=FT_Get_Postscript_Name(face);
158 printf("Font name: %s\n", name);
159 printf("Glyphs: %ld\n", face->num_glyphs);
162 err=FT_Set_Pixel_Sizes(face, 0, size);
165 fprintf(stderr, "Couldn't set size\n");
168 ascent=(face->bbox.yMax*face->size->metrics.x_scale)>>16;
169 ascent=(ascent+63)/64;
170 ch=((face->bbox.yMax-face->bbox.yMin)*face->size->metrics.y_scale)>>16;
172 cw=((face->bbox.xMax-face->bbox.xMin)*face->size->metrics.x_scale)>>16;
176 printf("Ascent %d\n",ascent);
177 printf("Descent %ld\n",(((face->bbox.yMin*face->size->metrics.y_scale)>>16)+63)/64);
178 printf("Max height %d\n",ch);
179 printf("Max width %d\n",cw);
181 if(verbose>=1 && (ch>cell || cw>cell)) fprintf(stderr,"Warning: character size exceeds cell size\n");
183 w=round_to_pot(cpl*cell);
185 h=(face->num_glyphs+cpl-1)/cpl*cell;
187 h=(end-begin+cpl-1)/cpl*cell;
190 data=(char *)malloc(w*h);
191 memset(data, 255, w*h);
194 def=fopen(def_fn, "w");
197 fprintf(def, "%d %d %d\n", w, h, size);
200 for(i=begin; i<=end; ++i)
202 int glyph=FT_Get_Char_Index(face,i);
203 FT_Bitmap *bmp=&face->glyph->bitmap;
223 flags|=FT_LOAD_FORCE_AUTOHINT;
224 FT_Load_Glyph(face, glyph, flags);
225 FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
227 cx+=(cell-bmp->width)/2;
228 dy=ascent-face->glyph->bitmap_top;
233 printf(" Char %d: glyph %d, size %dx%d\n", i, glyph, bmp->width, bmp->rows);
234 if(bmp->width>cell || dy+bmp->rows>cell || dy<0) printf(" Warning: Character %d does not fit in cell\n", i);
239 fprintf(stderr, "Warning: Character %d not rendered (can't handle reversed bitmaps)\n", i);
243 for(y=0; y<bmp->rows; ++y) for(x=0; x<bmp->width; ++x)
245 if(cx+x<0 || cx+x>=w || cy+y<0 || cy+y>=h) continue;
246 data[cx+x+(cy+y)*w]=255-bmp->buffer[x+y*bmp->pitch];
250 fprintf(def, "%d %d %d %d %d %d %d\n",i, cx, cy, bmp->width, bmp->rows, face->glyph->bitmap_top-bmp->rows, (int)(face->glyph->advance.x+32)/64);
258 save_png(out, data, w, h);
260 if(verbose) printf("Converted %d glyphs\n",count);
265 unsigned round_to_pot(unsigned n)
279 printf("ttf2png - True Type Font to PNG converter\n"
280 "Copyright (c) 2004 Mikkosoft Productions\n"
281 "Distributed under the GNU General Public License\n\n"
282 "Usage: ttf2png [options] <TTF file>\n\n"
283 "Accepted options (default values in [brackets])\n"
284 " -r Range of characters to convert in the format low,high [0,255]\n"
285 " -s Font size to use, in pixels [10]\n"
286 " -l Number of characters to put in one line [16]\n"
287 " -c Character cell size, in pixels [16]\n"
288 " -o Output file name (or - for stdout) [font.png]\n"
289 " -a Force autohinter\n"
290 " -t Render font to alpha channel\n"
291 " -v Increase the level of verbosity\n"
292 " -e Use cells in sequence, rather than by code\n"
293 " -d Write a definition to the given file\n"
294 " -h Print this message\n");
297 int save_png(char *fn, char *data, int w, int h)
314 fprintf(stderr, "Couldn't open output file\n");
319 pngs=png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
322 fprintf(stderr, "Error writing PNG file\n");
325 pngi=png_create_info_struct(pngs);
328 png_destroy_write_struct(&pngs, NULL);
329 fprintf(stderr, "Error writing PNG file\n");
333 png_init_io(pngs, out);
336 data2=(png_byte *)malloc(w*h*2);
340 data2[i*2+1]=255-data[i];
343 rows[i]=(png_byte *)(data2+i*w*2);
344 color=PNG_COLOR_TYPE_GRAY_ALPHA;
349 rows[i]=(png_byte *)(data+i*w);
350 color=PNG_COLOR_TYPE_GRAY;
352 png_set_IHDR(pngs, pngi, w, h, 8, color, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
353 png_set_rows(pngs, pngi, rows);
354 png_write_png(pngs, pngi, PNG_TRANSFORM_IDENTITY, NULL);
355 png_destroy_write_struct(&pngs, &pngi);
356 if(alpha) free(data2);
358 if(verbose) printf("Saved %dx%d PNG image to %s\n", w, h, fn);