/**
* Get the character heights
* @returns array of number, the values of which are the heights
* and the keys of which are some combination of
* glpyh names, character codes, and unicodes codepoints, or characters
*/
public function getCharacterHeights()
{
if ($this->direction != -1) {
return $this->font_metrics[$this->direction]->getCharacterHeights();
} else {
return parent::getCharacterHeights();
}
}
