<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Pdf

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Numeric.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/** Zend_Pdf_Element */

require_once 'Zend/Pdf/Element.php';

/**

 * PDF file 'numeric' element implementation

 *

 * @category   Zend

 * @package    Zend_Pdf

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Pdf_Element_Numeric extends Zend_Pdf_Element

{

    /**

     * Object value

     *

     * @var numeric

     */

    public $value;

    /**

     * Object constructor

     *

     * @param numeric $val

     * @throws Zend_Pdf_Exception

     */

    public function __construct($val)

    {

        if ( !is_numeric($val) ) {

            require_once 'Zend/Pdf/Exception.php';

            throw new Zend_Pdf_Exception('Argument must be numeric');

        }

        $this->value = $val;

    }

    /**

     * Return type of the element.

     *

     * @return integer

     */

    public function getType()

    {

        return Zend_Pdf_Element::TYPE_NUMERIC;

    }

    /**

     * Return object as string

     *

     * @param Zend_Pdf_Factory $factory

     * @return string

     */

    public function toString($factory = null)

    {

        if (is_integer($this->value)) {

            return (string)$this->value;

        }

        /**

         * PDF doesn't support exponental format.

         * Fixed point format must be used instead

         */

        $prec = 0; $v = $this->value;

        while (abs( floor($v) - $v ) > 1e-10) {

            $prec++; $v *= 10;

        }

        return sprintf("%.{$prec}F", $this->value);

    }

}