<?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_hhea.cls.php 37 2011-11-07 07:38:44Z fabien.menager $
   */
  
  /**
   * `hhea` font table.
   * 
   * @package php-font-lib
   */
  class Font_Table_hhea extends Font_Table {
    protected $def = array(
      "version"             => self::Fixed,
      "ascent"              => self::FWord,
      "descent"             => self::FWord,
      "lineGap"             => self::FWord,
      "advanceWidthMax"     => self::uFWord,
      "minLeftSideBearing"  => self::FWord,
      "minRightSideBearing" => self::FWord,
      "xMaxExtent"          => self::FWord,
      "caretSlopeRise"      => self::int16,
      "caretSlopeRun"       => self::int16,
      "caretOffset"         => self::FWord,
                               self::int16,
                               self::int16,
                               self::int16,
                               self::int16,
      "metricDataFormat"    => self::int16,
      "numOfLongHorMetrics" => self::uint16,
    );
    
    function _encode(){
      $font = $this->getFont();
      $this->data["numOfLongHorMetrics"] = count($font->getSubset());
      
      return parent::_encode();
    }
  }