/**
* Returns the width of the glyph.
*
* Like {@link widthsForGlyphs()} but used for one glyph at a time.
*
* @param integer $glyphNumber
* @return integer
* @throws Zend_Pdf_Exception
*/
public function widthForGlyph($glyphNumber)
{
return $this->_descendantFont->widthForChar($glyphNumber);
}