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- <?php
- /* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4: */
- //
- // +----------------------------------------------------------------------+
- // | PHP version 4.0 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2001 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 3.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | 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 world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Author: Didier FOURNOUT <didier.fournout@nyc.fr> |
- // +----------------------------------------------------------------------+
- //
- // $Id: ean13.php,v 1.1 2003/01/21 11:46:20 jason Exp $
- //
-
- require_once "PEAR.php";
- require_once "Image/Barcode.php";
-
- /**
- * Class to create a EAN 13 barcode
- *
- * @author Didier FOURNOUT <didier.fournout@nyc.fr>
- */
-
- class Image_Barcode_ean13 extends Image_Barcode
- {
- /**
- * Barcode type
- * @var string
- */
- var $_type = 'ean13';
-
- /**
- * 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(
- 'A' => array(0,0,0,1,1,0,1),
- 'B' => array(0,1,0,0,1,1,1),
- 'C' => array(1,1,1,0,0,1,0)
- ),
- '1' => array(
- 'A' => array(0,0,1,1,0,0,1),
- 'B' => array(0,1,1,0,0,1,1),
- 'C' => array(1,1,0,0,1,1,0)
- ),
- '2' => array(
- 'A' => array(0,0,1,0,0,1,1),
- 'B' => array(0,0,1,1,0,1,1),
- 'C' => array(1,1,0,1,1,0,0)
- ),
- '3' => array(
- 'A' => array(0,1,1,1,1,0,1),
- 'B' => array(0,1,0,0,0,0,1),
- 'C' => array(1,0,0,0,0,1,0)
- ),
- '4' => array(
- 'A' => array(0,1,0,0,0,1,1),
- 'B' => array(0,0,1,1,1,0,1),
- 'C' => array(1,0,1,1,1,0,0)
- ),
- '5' => array(
- 'A' => array(0,1,1,0,0,0,1),
- 'B' => array(0,1,1,1,0,0,1),
- 'C' => array(1,0,0,1,1,1,0)
- ),
- '6' => array(
- 'A' => array(0,1,0,1,1,1,1),
- 'B' => array(0,0,0,0,1,0,1),
- 'C' => array(1,0,1,0,0,0,0)
- ),
- '7' => array(
- 'A' => array(0,1,1,1,0,1,1),
- 'B' => array(0,0,1,0,0,0,1),
- 'C' => array(1,0,0,0,1,0,0)
- ),
- '8' => array(
- 'A' => array(0,1,1,0,1,1,1),
- 'B' => array(0,0,0,1,0,0,1),
- 'C' => array(1,0,0,1,0,0,0)
- ),
- '9' => array(
- 'A' => array(0,0,0,1,0,1,1),
- 'B' => array(0,0,1,0,1,1,1),
- 'C' => array(1,1,1,0,1,0,0)
- )
- );
-
- var $_number_set_left_coding = array(
- '0' => array('A','A','A','A','A','A'),
- '1' => array('A','A','B','A','B','B'),
- '2' => array('A','A','B','B','A','B'),
- '3' => array('A','A','B','B','B','A'),
- '4' => array('A','B','A','A','B','B'),
- '5' => array('A','B','B','A','A','B'),
- '6' => array('A','B','B','B','A','A'),
- '7' => array('A','B','A','B','A','B'),
- '8' => array('A','B','A','B','B','A'),
- '9' => array('A','B','B','A','B','A')
- );
- function draw($text, $imgtype = 'png')
- {
- //TODO: Check if $text is number and len=13
-
- // Calculate the barcode width
- $barcodewidth = (strlen($text)) * (7 * $this->_barwidth)
- + 3 // left
- + 5 // center
- + 3 // right
- + imagefontwidth($this->_font)+1
- ;
-
- $barcodelongheight = (int) (imagefontheight($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);
-
- // 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;
-
- // Draw left $text contents
- $set_array=$this->_number_set_left_coding[$key];
- for ($idx = 1; $idx < 7; $idx ++) {
- $value=substr($text,$idx,1);
- imagestring ($img, $this->_font, $xpos+1, $this->_barcodeheight, $value, $black);
- foreach ($this->_number_set[$value][$set_array[$idx-1]] 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 = 7; $idx < 13; $idx ++) {
- $value=substr($text,$idx,1);
- imagestring ($img, $this->_font, $xpos+1, $this->_barcodeheight, $value, $black);
- foreach ($this->_number_set[$value]['C'] as $bar) {
- if ($bar) {
- imagefilledrectangle($img, $xpos, 0, $xpos + $this->_barwidth - 1, $this->_barcodeheight, $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 += $this->_barwidth;
-
- // Send image to browser
- switch($imgtype) {
-
- case 'gif':
- header("Content-type: image/gif");
- imagegif($img);
- imagedestroy($img);
- break;
-
- case 'jpg':
- header("Content-type: image/jpg");
- imagejpeg($img);
- imagedestroy($img);
- break;
-
- default:
- header("Content-type: image/png");
- imagepng($img);
- imagedestroy($img);
- break;
-
- }
-
- return;
-
- } // function create
-
- } // class