Zend/Pdf/Color.php

0001 <?php
0002 /**
0003  * Zend Framework
0004  *
0005  * LICENSE
0006  *
0007  * This source file is subject to the new BSD license that is bundled
0008  * with this package in the file LICENSE.txt.
0009  * It is also available through the world-wide-web at this URL:
0010  * http://framework.zend.com/license/new-bsd
0011  * If you did not receive a copy of the license and are unable to
0012  * obtain it through the world-wide-web, please send an email
0013  * to license@zend.com so we can send you a copy immediately.
0014  *
0015  * @category   Zend
0016  * @package    Zend_Pdf
0017  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
0018  * @license    http://framework.zend.com/license/new-bsd     New BSD License
0019  * @version    $Id$
0020  */
0021
0022
0023 /**
0024  * PDF provides a powerfull facilities for specifying the colors of graphics objects.
0025  * This class encapsulates color behaviour.
0026  *
0027  * Some colors interact with PDF document (create additional objects in a PDF),
0028  * others don't do it. That is defined in a subclasses.
0029  *
0030  * @package    Zend_Pdf
0031  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
0032  * @license    http://framework.zend.com/license/new-bsd     New BSD License
0033  */
0034 abstract class Zend_Pdf_Color
0035 {
0036     /**
0037      * Instructions, which can be directly inserted into content stream
0038      * to switch color.
0039      * Color set instructions differ for stroking and nonstroking operations.
0040      *
0041      * @param boolean $stroking
0042      * @return string
0043      */
0044     abstract public function instructions($stroking);
0045
0046     /**
0047      * Get color components (color space dependent)
0048      *
0049      * @return array
0050      */
0051     abstract public function getComponents();
0052 }
0053