library/Zend/Pdf/Color/Cmyk.php

   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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  18  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19  * @version    $Id: Cmyk.php 16978 2009-07-22 19:59:40Z alexander $
  20  */
  21
  22 /** Zend_Pdf_Color */
  23 require_once 'Zend/Pdf/Color.php';
  24
  25 /** Zend_Pdf_Element_Numeric */
  26 require_once 'Zend/Pdf/Element/Numeric.php';
  27
  28 /**
  29  * CMYK color implementation
  30  *
  31  * @category   Zend
  32  * @package    Zend_Pdf
  33  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  34  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  35  */
  36 class Zend_Pdf_Color_Cmyk extends Zend_Pdf_Color
  37 {
  38     /**
  39      * Cyan level.
  40      * 0.0 (zero concentration) - 1.0 (maximum concentration)
  41      *
  42      * @var Zend_Pdf_Element_Numeric
  43      */
  44     private $_c;
  45
  46     /**
  47      * Magenta level.
  48      * 0.0 (zero concentration) - 1.0 (maximum concentration)
  49      *
  50      * @var Zend_Pdf_Element_Numeric
  51      */
  52     private $_m;
  53
  54     /**
  55      * Yellow level.
  56      * 0.0 (zero concentration) - 1.0 (maximum concentration)
  57      *
  58      * @var Zend_Pdf_Element_Numeric
  59      */
  60     private $_y;
  61
  62     /**
  63      * Key (BlacK) level.
  64      * 0.0 (zero concentration) - 1.0 (maximum concentration)
  65      *
  66      * @var Zend_Pdf_Element_Numeric
  67      */
  68     private $_k;
  69
  70
  71     /**
  72      * Object constructor
  73      *
  74      * @param float $c
  75      * @param float $m
  76      * @param float $y
  77      * @param float $k
  78      */
  79     public function __construct($c, $m, $y, $k)
  80     {
  81         if ($c < 0) { $c = 0; }
  82         if ($c > 1) { $c = 1; }
  83
  84         if ($m < 0) { $m = 0; }
  85         if ($m > 1) { $m = 1; }
  86
  87         if ($y < 0) { $y = 0; }
  88         if ($y > 1) { $y = 1; }
  89
  90         if ($k < 0) { $k = 0; }
  91         if ($k > 1) { $k = 1; }
  92
  93         $this->_c = new Zend_Pdf_Element_Numeric($c);
  94         $this->_m = new Zend_Pdf_Element_Numeric($m);
  95         $this->_y = new Zend_Pdf_Element_Numeric($y);
  96         $this->_k = new Zend_Pdf_Element_Numeric($k);
  97     }
  98
  99     /**
 100      * Instructions, which can be directly inserted into content stream
 101      * to switch color.
 102      * Color set instructions differ for stroking and nonstroking operations.
 103      *
 104      * @param boolean $stroking
 105      * @return string
 106      */
 107     public function instructions($stroking)
 108     {
 109         return $this->_c->toString() . ' '
 110              . $this->_m->toString() . ' '
 111              . $this->_y->toString() . ' '
 112              . $this->_k->toString() .     ($stroking? " K\n" : " k\n");
 113     }
 114
 115     /**
 116      * Get color components (color space dependent)
 117      *
 118      * @return array
 119      */
 120     public function getComponents()
 121     {
 122         return array($this->_c->value, $this->_m->value, $this->_y->value, $this->_k->value);
 123     }
 124 }
 125