Gregwar\Image\Image::setAdapter PHP Méthode

    public function setAdapter($adapter)
    {
        if ($adapter instanceof Adapter\Adapter) {
            $this->adapter = $adapter;
        } else {
            if (is_string($adapter)) {
                $adapter = strtolower($adapter);
                switch ($adapter) {
                    case 'gd':
                        $this->adapter = new Adapter\GD();
                        break;
                    case 'imagemagick':
                    case 'imagick':
                        $this->adapter = new Adapter\Imagick();
                        break;
                    default:
                        throw new \Exception('Unknown adapter: ' . $adapter);
                        break;
                }
            } else {
                throw new \Exception('Unable to load the given adapter (not string or Adapter)');
            }
        }
        $this->adapter->setSource($this->source);
    }