<?php
  /**
   * @package php-font-lib
   * @link    http://php-font-lib.googlecode.com/
   * @author  Fabien Ménager <fabien.menager@gmail.com>
   * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   * @version $Id: font_table_head.cls.php 34 2011-10-23 13:53:25Z fabien.menager $
   */
  
  /**
   * `head` font table.
   * 
   * @package php-font-lib
   */
  class Font_Table_head extends Font_Table {
    protected $def = array(
      "tableVersion"       => self::Fixed,
      "fontRevision"       => self::Fixed,
      "checkSumAdjustment" => self::uint32,
      "magicNumber"        => self::uint32,
      "flags"              => self::uint16,
      "unitsPerEm"         => self::uint16,
      "created"            => self::longDateTime,
      "modified"           => self::longDateTime,
      "xMin"               => self::FWord,
      "yMin"               => self::FWord,
      "xMax"               => self::FWord,
      "yMax"               => self::FWord,
      "macStyle"           => self::uint16,
      "lowestRecPPEM"      => self::uint16,
      "fontDirectionHint"  => self::int16,
      "indexToLocFormat"   => self::int16,
      "glyphDataFormat"    => self::int16,
    );
    
    protected function _parse(){
      parent::_parse();
      
      if($this->data["magicNumber"] != 0x5F0F3CF5) {
        throw new Exception("Incorrect magic number (".dechex($this->data["magicNumber"]).")");
      }
    }
  }