/schrift

Schrift is a font library that reads true type fonts and creates subset fonts containing only the needed characters.

Primary LanguagePHPMIT LicenseMIT

Schrift

Schrift is a font library that reads true type fonts and creates subset fonts containing only the needed characters. It is released under the MIT license.

Getting Started

  • Download Schrift and include the library into your project:

     include("schrift/schrift.php");

  • Run the code to create a font subset:

     $font = new Schrift("GentiumPlus-R.ttf");
 $data = $font->subset("Hello τυπογραφία!");

    The font subset in $data is a valid true type file and contains only the given characters.

    If you want to know which characters are supported by this font file:

     $chars = $font->supported_chars();
 print $chars;

    This will return an utf-8 encoded string. Additionally if you need integer character codes you can use supported_charcodes().

    You can enable debugging output by overwriting the default options:

     $options = array("debug" => true);
 $font = new Schrift("GentiumPlus-R.ttf", $options);

The Font Subset

At the moment the font subset contains the following information:

  • cmap table - character to glyph mappings
  • glyf table - simple and compound glyphs
  • head table - global font information
  • hhea table - horizontal font information
  • hmtx table - horizontal metric information
  • loca table - locations of the glyphs
  • maxp table - memory requirements
  • name table - human-readable names
  • post table - postscript names

The head, hmtx and name tables are unmodified copies of the original font. The post table at this time contains no information.