1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

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

     8  * with this package in the file LICENSE.txt.

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

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

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

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

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

    14  *

    15  * @category   Zend

    16  * @package    Zend_Pdf

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

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

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

    20  */

    21 

    22 

    23 /**

    24  * PDF provides a powerfull facilities for specifying the colors of graphics objects.

    25  * This class encapsulates color behaviour.

    26  *

    27  * Some colors interact with PDF document (create additional objects in a PDF),

    28  * others don't do it. That is defined in a subclasses.

    29  *

    30  * @package    Zend_Pdf

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

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

    33  */

    34 abstract class Zend_Pdf_Color

    35 {

    36     /**

    37      * Instructions, which can be directly inserted into content stream

    38      * to switch color.

    39      * Color set instructions differ for stroking and nonstroking operations.

    40      *

    41      * @param boolean $stroking

    42      * @return string

    43      */

    44     abstract public function instructions($stroking);

    45 

    46     /**

    47      * Get color components (color space dependent)

    48      *

    49      * @return array

    50      */

    51     abstract public function getComponents();

    52 }

    53