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<?php
/**
* BCGupcext2.barcode.php
*--------------------------------------------------------------------
*
* Sub-Class - UPC Supplemental Barcode 2 digits
*
* Working with UPC-A, UPC-E, EAN-13, EAN-8
* This includes 2 digits (normaly for publications)
* Must be placed next to UPC or EAN Code
*
*--------------------------------------------------------------------
* Revision History
* v2.0.0 23 apr 2008 Jean-Sébastien Goupil New Version Update
* v1.2.3 6 feb 2006 Jean-Sébastien Goupil Using correctly static method
* v1.2.3b 31 dec 2005 Jean-Sébastien Goupil PHP5.1 compatible
* v1.2.1 27 jun 2005 Jean-Sébastien Goupil Font support added + correcting output error
* V1.00 17 jun 2004 Jean-Sebastien Goupil
*--------------------------------------------------------------------
* $Id: BCGupcext2.barcode.php,v 1.13 2009/11/09 04:08:41 jsgoupil Exp $
*--------------------------------------------------------------------
* Copyright (C) Jean-Sebastien Goupil
* http://www.barcodephp.com
*/
include_once('BCGBarcode1D.php');
class BCGupcext2 extends BCGBarcode1D {
protected $codeParity = array();
/**
* Constructor
*/
public function __construct() {
parent::__construct();
$this->keys = array('0','1','2','3','4','5','6','7','8','9');
$this->code = array(
'2100', /* 0 */
'1110', /* 1 */
'1011', /* 2 */
'0300', /* 3 */
'0021', /* 4 */
'0120', /* 5 */
'0003', /* 6 */
'0201', /* 7 */
'0102', /* 8 */
'2001' /* 9 */
);
// Parity, 0=Odd, 1=Even. Depending on ?%4
$this->codeParity = array(
array(0,0), /* 0 */
array(0,1), /* 1 */
array(1,0), /* 2 */
array(1,1) /* 3 */
);
}
public function parse($text) {
parent::parse($text);
$this->setLabelOffset();
}
public function setFont($font) {
parent::setFont($font);
$this->setLabelOffset();
}
public function setLabel($label) {
parent::setLabel($label);
$this->setLabelOffset();
}
public function setOffsetY($offsetY) {
parent::setOffsetY($offsetY);
$this->setLabelOffset();
}
public function setScale($scale) {
parent::setScale($scale);
$this->setLabelOffset();
}
/**
* Draws the barcode
*
* @param resource $im
*/
public function draw(&$im) {
$error_stop = false;
// Checking if all chars are allowed
$c = strlen($this->text);
for($i = 0; $i < $c; $i++) {
if(array_search($this->text[$i], $this->keys) === false) {
$this->drawError($im, 'Char \'' . $this->text[$i] . '\' not allowed.');
$error_stop = true;
}
}
if($error_stop === false) {
// Must contain 2 chars
if($c !== 2) {
$this->drawError($im, 'Must contain 2 chars.');
$error_stop = true;
}
if($error_stop === false) {
// Starting Code
$this->drawChar($im, '001', true);
// Code
for($i = 0; $i < 2; $i++) {
$this->drawChar($im, self::inverse($this->findCode($this->text[$i]), $this->codeParity[intval($this->text) % 4][$i]), false);
if($i === 0) {
$this->DrawChar($im, '00', false); // Inter-char
}
}
$this->drawText($im);
}
}
}
/**
* Returns the maximal size of a barcode
*
* @return int[]
*/
public function getMaxSize() {
$p = parent::getMaxSize();
$startlength = 4 * $this->scale;
$textlength = 2 * 7 * $this->scale;
$intercharlength = 2 * $this->scale;
$label = $this->getLabel();
$textHeight = 0;
if(!empty($label)) {
if($this->textfont instanceof BCGFont) {
$textfont = clone $this->textfont;
$textfont->setText($label);
$textHeight = $textfont->getHeight() + self::SIZE_SPACING_FONT;
} elseif($this->textfont !== 0) {
$textHeight = imagefontheight($this->textfont) + self::SIZE_SPACING_FONT;
}
}
return array($p[0] + $startlength + $textlength + $intercharlength, $p[1] - $textHeight);
}
/**
* Overloaded method for drawing special label
*
* @param resource $im
*/
protected function drawText($im) {
$label = $this->getLabel();
if(!empty($label)) {
$pA = $this->getMaxSize();
$pB = BCGBarcode1D::getMaxSize();
$w = $pA[0] - $pB[0];
if($this->textfont instanceof BCGFont) {
$textfont = clone $this->textfont;
$textfont->setText($label);
$xPosition = ($w / 2) - ($textfont->getWidth() / 2) + $this->offsetX * $this->scale;
$yPosition = $this->offsetY * $this->scale - BCGBarcode1D::SIZE_SPACING_FONT;
$textfont->draw($im, $this->colorFg->allocate($im), $xPosition, $yPosition);
} elseif($this->textfont !== 0) {
$xPosition = ($w / 2) - (strlen($label) / 2) * imagefontwidth($this->textfont) + $this->offsetX * $this->scale;
$yPosition = $this->offsetY * $this->scale - BCGBarcode1D::SIZE_SPACING_FONT - imagefontheight($this->textfont);
imagestring($im, $this->textfont, $xPosition, $yPosition, $label, $this->colorFg->allocate($im));
}
}
}
private function setLabelOffset() {
$label = $this->getLabel();
if(!empty($label)) {
if($this->textfont instanceof BCGFont) {
$f = clone $this->textfont;
$f->setText($label);
$val = ($f->getHeight() - $f->getUnderBaseline()) / $this->scale + BCGBarcode1D::SIZE_SPACING_FONT;
if($val > $this->offsetY) {
$this->offsetY = $val;
}
} elseif($this->textfont !== 0) {
$val = (imagefontheight($this->textfont) + 2) / $this->scale;
if($val > $this->offsetY) {
$this->offsetY = $val;
}
}
}
}
private static function inverse($text, $inverse = 1) {
if($inverse === 1) {
$text = strrev($text);
}
return $text;
}
};
?>
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