/**
* Get the available Graphics Library
* @return object Graphics Library Instance
* @throws RuntimeException
*/
public static function getLib($lib = null)
{
if (!isset(self::$lib)) {
if (extension_loaded('Imagick')) {
$lib = 'Imagick';
} else {
if (extension_loaded('gd')) {
$lib = 'GD';
} else {
throw new RuntimeException('No supported Image library available.');
}
}
if ($lib == 'Imagick' && self::$preferImagick === false) {
$lib = 'GD';
}
require_once dirname(__FILE__) . '/' . strtolower($lib) . '.php';
$class = 'WFImage' . $lib;
if (class_exists($class)) {
self::$lib = new $class();
} else {
throw new RuntimeException('Class ' . $class . ' not found');
}
}
return self::$lib;
}
