private function getFont($family, $style)
{
$map = array("serif" => "Times", "sans-serif" => "Helvetica", "fantasy" => "Symbol", "cursive" => "serif", "monospance" => "Courier");
$family = strtolower($family);
if (isset($map[$family])) {
$family = $map[$family];
}
return $this->canvas->load_font($family, "unicode", "fontstyle={$style}");
}
