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 <?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 
 /** Internally used classes */
 // require_once 'Zend/Pdf/Element/Numeric.php';
 
 
 /** Zend_Pdf_Color */
 // require_once 'Zend/Pdf/Color.php';
 
 /**
  * GrayScale color implementation
  *
  * @category   Zend
  * @package    Zend_Pdf
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Pdf_Color_GrayScale extends Zend_Pdf_Color
 {
     /**
      * GrayLevel.
      * 0.0 (black) - 1.0 (white)
      *
      * @var Zend_Pdf_Element_Numeric
      */
     private $_grayLevel;
 
     /**
      * Object constructor
      *
      * @param float $grayLevel
      */
     public function __construct($grayLevel)
     {
         if ($grayLevel < 0) { $grayLevel = 0; }
         if ($grayLevel > 1) { $grayLevel = 1; }
 
         $this->_grayLevel = new Zend_Pdf_Element_Numeric($grayLevel);
     }
 
     /**
      * Instructions, which can be directly inserted into content stream
      * to switch color.
      * Color set instructions differ for stroking and nonstroking operations.
      *
      * @param boolean $stroking
      * @return string
      */
     public function instructions($stroking)
     {
         return $this->_grayLevel->toString() . ($stroking? " G\n" : " g\n");
     }
 
     /**
      * Get color components (color space dependent)
      *
      * @return array
      */
     public function getComponents()
     {
         return array($this->_grayLevel->value);
     }
 }