<?php


/**


 * @package dompdf


 * @link    http://dompdf.github.com/


 * @author  Benj Carson <benjcarson@digitaljunkies.ca>


 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License


 */





namespace Dompdf\Positioner;





use Dompdf\FrameDecorator\AbstractFrameDecorator;





/**


 * Base AbstractPositioner class


 *


 * Defines postioner interface


 *


 * @access  private


 * @package dompdf


 */


abstract class AbstractPositioner


{





    /**


     * @param AbstractFrameDecorator $frame


     * @return mixed


     */


    abstract function position(AbstractFrameDecorator $frame);





    /**


     * @param AbstractFrameDecorator $frame


     * @param $offset_x


     * @param $offset_y


     * @param bool $ignore_self


     */


    function move(AbstractFrameDecorator $frame, $offset_x, $offset_y, $ignore_self = false)


    {


        list($x, $y) = $frame->get_position();





        if (!$ignore_self) {


            $frame->set_position($x + $offset_x, $y + $offset_y);


        }





        foreach ($frame->get_children() as $child) {


            $child->move($offset_x, $offset_y);


        }


    }


}


