public function upload() {
        require_once '../class/Upload.class.php';
        $this->slide_foto = "";
        $dir_dest = '../fotos/slide/';
        $file = $_FILES['slide_foto'];

        $handle = new Upload($file);
        if ($handle->uploaded) {
            $handle->file_overwrite = true;
            //$handle->image_convert = 'png';
            //Configuracoes de redimensionamento paisagem
            $plMax = 1300; //largura maxima permitida
            $paMax = 450; // altura maxima permitida
            if ($handle->image_src_x > $plMax || $handle->image_src_y > $paMax) {
                //$handle->image_ratio_x = true;
                $handle->image_resize = true;
                $handle->image_x = 1000;
                $handle->image_y = 380;
            }

            $handle->file_new_name_body = md5(uniqid($file['name']));
            $handle->Process($dir_dest);
            if ($handle->processed) {
                $this->slide_foto = $handle->file_dst_name;
            }
        }
    }