Subversion-Projekte lars-tiefland.php_share

<?php

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

/**

 * Image_Barcode_int25 class

 *

 * Renders Interleaved 2 of 5 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     Marcelo Subtil Marcal <msmarcal@php.net>

 * @copyright  2005 The PHP Group

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

 * @version    CVS: $Id: int25.php 304741 2010-10-25 09:14:17Z clockwerx $

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

 */

require_once "PEAR.php";

require_once "Image/Barcode.php";

/**

 * Image_Barcode_int25 class

 *

 * Package which provides a method to create Interleaved 2 of 5 barcode using GD library.

 *

 * @category   Image

 * @package    Image_Barcode

 * @author     Marcelo Subtil Marcal <msmarcal@php.net>

 * @copyright  2005 The PHP Group

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

 * @version    Release: @package_version@

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

 */

class Image_Barcode_int25 extends Image_Barcode

{

    /**

     * Barcode type

     * @var string

     */

    var $_type = 'int25';

    /**

     * Barcode height

     *

     * @var integer

     */

    var $_barcodeheight = 50;

    /**

     * Bar thin width

     *

     * @var integer

     */

    var $_barthinwidth = 1;

    /**

     * Bar thick width

     *

     * @var integer

     */

    var $_barthickwidth = 3;

    /**

     * Coding map

     * @var array

     */

    var $_coding_map = array(

           '0' => '00110',

           '1' => '10001',

           '2' => '01001',

           '3' => '11000',

           '4' => '00101',

           '5' => '10100',

           '6' => '01100',

           '7' => '00011',

           '8' => '10010',

           '9' => '01010'

        );

    /**

     * Draws a Interleaved 2 of 5 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 Marcelo Subtil Marcal <msmarcal@php.net>

     * @since  Image_Barcode 0.3

     */

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

    {

        $text = trim($text);

        if (!preg_match("/[0-9]/",$text)) return;

        // if odd $text lenght adds a '0' at string beginning

        $text = strlen($text) % 2 ? '0' . $text : $text;

        // Calculate the barcode width

        $barcodewidth = (strlen($text)) * (3 * $this->_barthinwidth + 2 * $this->_barthickwidth) +

            (strlen($text)) * 2.5 +

            (7 * $this->_barthinwidth + $this->_barthickwidth) + 3;

        // Create the image

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

        // 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

        for ($i=0; $i < 2; $i++) {

            $elementwidth = $this->_barthinwidth;

            imagefilledrectangle($img, $xpos, 0, $xpos + $elementwidth - 1, $this->_barcodeheight, $black);

            $xpos += $elementwidth;

            $xpos += $this->_barthinwidth;

            $xpos ++;

        }

        // Draw $text contents

        for ($idx = 0; $idx < strlen($text); $idx += 2) {       // Draw 2 chars at a time

            $oddchar  = substr($text, $idx, 1);                 // get odd char

            $evenchar = substr($text, $idx + 1, 1);             // get even char

            // interleave

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

                // Draws odd char corresponding bar (black)

                $elementwidth = (substr($this->_coding_map[$oddchar], $baridx, 1)) ?  $this->_barthickwidth : $this->_barthinwidth;

                imagefilledrectangle($img, $xpos, 0, $xpos + $elementwidth - 1, $this->_barcodeheight, $black);

                $xpos += $elementwidth;

                // Left enought space to draw even char (white)

                $elementwidth = (substr($this->_coding_map[$evenchar], $baridx, 1)) ?  $this->_barthickwidth : $this->_barthinwidth;

                $xpos += $elementwidth;

                $xpos ++;

            }

        }

        // Draws the trailer

        $elementwidth = $this->_barthickwidth;

        imagefilledrectangle($img, $xpos, 0, $xpos + $elementwidth - 1, $this->_barcodeheight, $black);

        $xpos += $elementwidth;

        $xpos += $this->_barthinwidth;

        $xpos ++;

        $elementwidth = $this->_barthinwidth;

        imagefilledrectangle($img, $xpos, 0, $xpos + $elementwidth - 1, $this->_barcodeheight, $black);

        return $img;

    } // function create

} // class

?>