Subversion-Projekte lars-tiefland.php_share

<?php

/* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4: */

/**

 * Image_Barcode_postnet class

 *

 * Renders PostNet barcodes

 *

 * PHP versions 4

 *

 * LICENSE: This source file is subject to version 3.0 of the PHP license

 * that is available through the world-wide-web at the following URI:

 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of

 * the PHP License and are unable to obtain it through the web, please

 * send a note to license@php.net so we can mail you a copy immediately.

 *

 * @category   Image

 * @package    Image_Barcode

 * @author     Josef "Jeff" Sipek <jeffpc@optonline.net>

 * @copyright  2005 Josef "Jeff" Sipek

 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0

 * @version    CVS: $Id: postnet.php 304741 2010-10-25 09:14:17Z clockwerx $

 * @link       http://pear.php.net/package/Image_Barcode

 */

 /*

  * Note:

  *

  * The generated barcode must fit the following criteria to be useable

  * by the USPS scanners:

  *

  * When printed, the dimensions should be:

  *

  *     tall bar:       1/10 inches     = 2.54 mm

  *  short bar:      1/20 inches     = 1.27 mm

  *  density:        22 bars/inch    = 8.66 bars/cm

  */

require_once 'Image/Barcode.php';

/**

 * Image_Barcode_postnet class

 *

 * Package which provides a method to create PostNet barcode using GD library.

 *

 * @category   Image

 * @package    Image_Barcode

 * @author     Josef "Jeff" Sipek <jeffpc@optonline.net>

 * @copyright  2005 Josef "Jeff" Sipek

 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0

 * @version    CVS: $Id: postnet.php 304741 2010-10-25 09:14:17Z clockwerx $

 * @link       http://pear.php.net/package/Image_Barcode

 */

class Image_Barcode_postnet extends Image_Barcode

{

    /**

     * Barcode type

     * @var string

     */

    var $_type = 'postnet';

    /**

     * Bar short height

     *

     * @var integer

     */

    var $_barshortheight = 7;

    /**

     * Bar tall height

     *

     * @var integer

     */

    var $_bartallheight = 15;

    /**

     * Bar width / scaling factor

     *

     * @var integer

     */

    var $_barwidth = 2;

    /**

     * Coding map

     * @var array

     */

    var $_coding_map = array(

           '0' => '11000',

           '1' => '00011',

           '2' => '00101',

           '3' => '00110',

           '4' => '01001',

           '5' => '01010',

           '6' => '01100',

           '7' => '10001',

           '8' => '10010',

           '9' => '10100'

        );

    /**

     * Draws a PostNet image barcode

     *

     * @param  string $text     A text that should be in the image barcode

     * @param  string $imgtype  The image type that will be generated

     *

     * @return image            The corresponding Interleaved 2 of 5 image barcode

     *

     * @access public

     *

     * @author Josef "Jeff" Sipek <jeffpc@optonline.net>

     * @since  Image_Barcode 0.3

     */

    function draw($text, $imgtype = 'png')

    {

        $text = trim($text);

        if (!preg_match('/[0-9]/', $text)) {

            return;

        }

        // Calculate the barcode width

        $barcodewidth = (strlen($text)) * 2 * 5 * $this->_barwidth + $this->_barwidth*3;

        // Create the image

        $img = ImageCreate($barcodewidth, $this->_bartallheight);

        // Alocate the black and white colors

        $black = ImageColorAllocate($img, 0, 0, 0);

        $white = ImageColorAllocate($img, 255, 255, 255);

        // Fill image with white color

        imagefill($img, 0, 0, $white);

        // Initiate x position

        $xpos = 0;

        // Draws the leader

        imagefilledrectangle($img, $xpos, 0, $xpos + $this->_barwidth - 1, $this->_bartallheight, $black);

        $xpos += 2*$this->_barwidth;

        // Draw $text contents

        for ($idx = 0; $idx < strlen($text); $idx++) {

            $char  = substr($text, $idx, 1);

            for ($baridx = 0; $baridx < 5; $baridx++) {

                $elementheight = (substr($this->_coding_map[$char], $baridx, 1)) ?  0 : $this->_barshortheight;

                imagefilledrectangle($img, $xpos, $elementheight, $xpos + $this->_barwidth - 1, $this->_bartallheight, $black);

                $xpos += 2*$this->_barwidth;

            }

        }

        // Draws the trailer

        imagefilledrectangle($img, $xpos, 0, $xpos + $this->_barwidth - 1, $this->_bartallheight, $black);

        $xpos += 2*$this->_barwidth;

        return $img;

    } // function create

} // class

?>