Subversion-Projekte lars-tiefland.php_share

<?php

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

/**

 * Image_Barcode_upca class

 *

 * Renders UPC-A 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     Jeffrey K. Brown <jkb@darkfantastic.net>

 * @author     Didier Fournout <didier.fournout@nyc.fr>

 * @copyright  2005 The PHP Group

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

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

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

 */

require_once 'Image/Barcode.php';

/**

 * Image_Barcode_upca class

 *

 * Package which provides a method to create UPC-A barcode using GD library.

 *

 * Slightly Modified ean13.php to get upca.php I needed a way to print

 * UPC-A bar codes on a PHP page.  The Image_Barcode class seemed like

 * the best way to do it, so I modified ean13 to print in the UPC-A format.

 * Checked the bar code tables against some documentation below (no errors)

 * and validated the changes with my trusty cue-cat.

 * http://www.indiana.edu/~atmat/units/barcodes/bar_t4.htm

 *

 * @category   Image

 * @package    Image_Barcode

 * @author     Jeffrey K. Brown <jkb@darkfantastic.net>

 * @author     Didier Fournout <didier.fournout@nyc.fr>

 * @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_upca extends Image_Barcode

{

    /**

     * Barcode type

     * @var string

     */

    var $_type = 'upca';

    /**

     * Barcode height

     *

     * @var integer

     */

    var $_barcodeheight = 50;

    /**

     * Font use to display text

     *

     * @var integer

     */

    var $_font = 2;  // gd internal small font

    /**

     * Bar width

     *

     * @var integer

     */

    var $_barwidth = 1;

    /**

     * Number set

     * @var array

     */

    var $_number_set = array(

           '0' => array(

                    'L' => array(0,0,0,1,1,0,1),

                    'R' => array(1,1,1,0,0,1,0)

                        ),

           '1' => array(

                    'L' => array(0,0,1,1,0,0,1),

                    'R' => array(1,1,0,0,1,1,0)

                        ),

           '2' => array(

                    'L' => array(0,0,1,0,0,1,1),

                    'R' => array(1,1,0,1,1,0,0)

                        ),

           '3' => array(

                    'L' => array(0,1,1,1,1,0,1),

                    'R' => array(1,0,0,0,0,1,0)

                        ),

           '4' => array(

                    'L' => array(0,1,0,0,0,1,1),

                    'R' => array(1,0,1,1,1,0,0)

                        ),

           '5' => array(

                    'L' => array(0,1,1,0,0,0,1),

                    'R' => array(1,0,0,1,1,1,0)

                        ),

           '6' => array(

                    'L' => array(0,1,0,1,1,1,1),

                    'R' => array(1,0,1,0,0,0,0)

                        ),

           '7' => array(

                    'L' => array(0,1,1,1,0,1,1),

                    'R' => array(1,0,0,0,1,0,0)

                        ),

           '8' => array(

                    'L' => array(0,1,1,0,1,1,1),

                    'R' => array(1,0,0,1,0,0,0)

                        ),

           '9' => array(

                    'L' => array(0,0,0,1,0,1,1),

                    'R' => array(1,1,1,0,1,0,0)

                        )

        );

    /**

     * Draws a UPC-A 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  Jeffrey K. Brown <jkb@darkfantastic.net>

     * @author  Didier Fournout <didier.fournout@nyc.fr>

     *

     */

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

    {

        $error = false;

        if ((is_numeric($text)==false) || (strlen($text)!=12)) {

            $barcodewidth= (12 * 7 * $this->_barwidth) + 3 + 5 + 3 + 2 * (imagefontwidth($this->_font)+1);

            $error = true;

        } else {

            // Calculate the barcode width

            $barcodewidth = (strlen($text)) * (7 * $this->_barwidth)

                + 3 // left

                + 5 // center

                + 3 // right

                + imagefontwidth($this->_font)+1

                + imagefontwidth($this->_font)+1   // check digit's padding

                ;

        }

        $barcodelongheight = (int) (imagefontheight($this->_font)/2)+$this->_barcodeheight;

        // Create the image

        $img = ImageCreate($barcodewidth, $barcodelongheight+ imagefontheight($this->_font)+1);

        // 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);

        if ($error) {

            $imgerror = ImageCreate($barcodewidth, $barcodelongheight+imagefontheight($this->_font)+1);

            $red      = ImageColorAllocate($imgerror, 255, 0, 0);

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

            imagefill($imgerror, 0, 0, $red);

            imagestring(

                $imgerror,

                $this->_font,

                $barcodewidth / 2 - (10/2 * imagefontwidth($this->_font)),

                $this->_barcodeheight / 2,

                'Code Error',

                $black

            );

        }

        // get the first digit which is the key for creating the first 6 bars

        $key = substr($text,0,1);

        // Initiate x position

        $xpos = 0;

        // print first digit

        imagestring($img, $this->_font, $xpos, $this->_barcodeheight, $key, $black);

        $xpos= imagefontwidth($this->_font) + 1;

        // Draws the left guard pattern (bar-space-bar)

        // bar

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

        $xpos += $this->_barwidth;

        // space

        $xpos += $this->_barwidth;

        // bar

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

        $xpos += $this->_barwidth;

        foreach ($this->_number_set[$key]['L'] as $bar) {

            if ($bar) {

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

            }

            $xpos += $this->_barwidth;

        }

        // Draw left $text contents

        for ($idx = 1; $idx < 6; $idx ++) {

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

            imagestring ($img, $this->_font, $xpos+1, $this->_barcodeheight, $value, $black);

            foreach ($this->_number_set[$value]['L'] as $bar) {

                if ($bar) {

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

                }

                $xpos += $this->_barwidth;

            }

        }

        // Draws the center pattern (space-bar-space-bar-space)

        // space

        $xpos += $this->_barwidth;

        // bar

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

        $xpos += $this->_barwidth;

        // space

        $xpos += $this->_barwidth;

        // bar

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

        $xpos += $this->_barwidth;

        // space

        $xpos += $this->_barwidth;

        // Draw right $text contents

        for ($idx = 6; $idx < 11; $idx ++) {

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

            imagestring ($img, $this->_font, $xpos+1, $this->_barcodeheight, $value, $black);

            foreach ($this->_number_set[$value]['R'] as $bar) {

                if ($bar) {

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

                }

                $xpos += $this->_barwidth;

            }

        }

        $value = substr($text,11,1);

        foreach ($this->_number_set[$value]['R'] as $bar) {

            if ($bar) {

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

            }

            $xpos += $this->_barwidth;

        }

        // Draws the right guard pattern (bar-space-bar)

        // bar

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

        $xpos += $this->_barwidth;

        // space

        $xpos += $this->_barwidth;

        // bar

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

        $xpos += $this->_barwidth;

        // Print Check Digit

        imagestring($img, $this->_font, $xpos+1, $this->_barcodeheight, $value, $black);

        if ($error) {

            return $imgerror;

        } else {

            return $img;

        }

    } // function create

} // class

?>