<?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: Cmyk.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/** Internally used classes */

require_once 'Zend/Pdf/Element/Numeric.php';

/** Zend_Pdf_Color */

require_once 'Zend/Pdf/Color.php';

/**

 * CMYK color 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_Color_Cmyk extends Zend_Pdf_Color

{

    /**

     * Cyan level.

     * 0.0 (zero concentration) - 1.0 (maximum concentration)

     *

     * @var Zend_Pdf_Element_Numeric

     */

    private $_c;

    /**

     * Magenta level.

     * 0.0 (zero concentration) - 1.0 (maximum concentration)

     *

     * @var Zend_Pdf_Element_Numeric

     */

    private $_m;

    /**

     * Yellow level.

     * 0.0 (zero concentration) - 1.0 (maximum concentration)

     *

     * @var Zend_Pdf_Element_Numeric

     */

    private $_y;

    /**

     * Key (BlacK) level.

     * 0.0 (zero concentration) - 1.0 (maximum concentration)

     *

     * @var Zend_Pdf_Element_Numeric

     */

    private $_k;

    /**

     * Object constructor

     *

     * @param float $c

     * @param float $m

     * @param float $y

     * @param float $k

     */

    public function __construct($c, $m, $y, $k)

    {

        if ($c < 0) { $c = 0; }

        if ($c > 1) { $c = 1; }

        if ($m < 0) { $m = 0; }

        if ($m > 1) { $m = 1; }

        if ($y < 0) { $y = 0; }

        if ($y > 1) { $y = 1; }

        if ($k < 0) { $k = 0; }

        if ($k > 1) { $k = 1; }

        $this->_c = new Zend_Pdf_Element_Numeric($c);

        $this->_m = new Zend_Pdf_Element_Numeric($m);

        $this->_y = new Zend_Pdf_Element_Numeric($y);

        $this->_k = new Zend_Pdf_Element_Numeric($k);

    }

    /**

     * 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->_c->toString() . ' '

             . $this->_m->toString() . ' '

             . $this->_y->toString() . ' '

             . $this->_k->toString() .     ($stroking? " K\n" : " k\n");

    }

    /**

     * Get color components (color space dependent)

     *

     * @return array

     */

    public function getComponents()

    {

        return array($this->_c->value, $this->_m->value, $this->_y->value, $this->_k->value);

    }

}