$font_file = rtrim($this->options['font_path'], '/\\');
$font_file.= (OS_WINDOWS) ? '\\' : '/';
$font_file.= $this->options['font_file'];
$font_file = realpath($font_file);
if (empty($font_file) || !is_file($font_file) || !is_readable($font_file)) {
$font_file = rtrim($this->options['font_path'], '/\\');
$font_file.= (OS_WINDOWS) ? '\\' : '/';
$font_file.= $this->options['font_file'];
$font_file = realpath($font_file);
if (empty($font_file) || !is_file($font_file) || !is_readable($font_file)) {