141 lines
3.9 KiB
PHP
141 lines
3.9 KiB
PHP
<?php
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/**
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*--------------------------------------------------------------------
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*
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* Sub-Class - UPC Supplemental Barcode 2 digits
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*
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* Working with UPC-A, UPC-E, EAN-13, EAN-8
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* This includes 2 digits (normaly for publications)
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* Must be placed next to UPC or EAN Code
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*
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*--------------------------------------------------------------------
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* @author Akhtar Khan <er.akhtarkhan@gmail.com>
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* @link http://www.codeitnow.in
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* @package https://github.com/codeitnowin/barcode-generator
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*/
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namespace CodeItNow\BarcodeBundle\Generator;
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use CodeItNow\BarcodeBundle\Generator\CINParseException;
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use CodeItNow\BarcodeBundle\Generator\CINBarcode1D;
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use CodeItNow\BarcodeBundle\Generator\CINLabel;
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class CINupcext2 extends CINBarcode1D {
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protected $codeParity = array();
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/**
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* Constructor.
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*/
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public function __construct() {
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parent::__construct();
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$this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
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$this->code = array(
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'2100', /* 0 */
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'1110', /* 1 */
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'1011', /* 2 */
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'0300', /* 3 */
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'0021', /* 4 */
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'0120', /* 5 */
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'0003', /* 6 */
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'0201', /* 7 */
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'0102', /* 8 */
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'2001' /* 9 */
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);
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// Parity, 0=Odd, 1=Even. Depending on ?%4
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$this->codeParity = array(
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array(0, 0), /* 0 */
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array(0, 1), /* 1 */
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array(1, 0), /* 2 */
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array(1, 1) /* 3 */
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);
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}
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/**
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* Draws the barcode.
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*
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* @param resource $im
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*/
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public function draw($im) {
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// Starting Code
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$this->drawChar($im, '001', true);
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// Code
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for ($i = 0; $i < 2; $i++) {
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$this->drawChar($im, self::inverse($this->findCode($this->text[$i]), $this->codeParity[intval($this->text) % 4][$i]), false);
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if ($i === 0) {
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$this->drawChar($im, '00', false); // Inter-char
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}
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}
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$this->drawText($im, 0, 0, $this->positionX, $this->thickness);
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}
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/**
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* Returns the maximal size of a barcode.
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*
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* @param int $w
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* @param int $h
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* @return int[]
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*/
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public function getDimension($w, $h) {
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$startlength = 4;
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$textlength = 2 * 7;
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$intercharlength = 2;
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$w += $startlength + $textlength + $intercharlength;
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$h += $this->thickness;
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return parent::getDimension($w, $h);
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}
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/**
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* Adds the default label.
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*/
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protected function addDefaultLabel() {
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parent::addDefaultLabel();
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if ($this->defaultLabel !== null) {
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$this->defaultLabel->setPosition(CINLabel::POSITION_TOP);
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}
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}
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/**
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* Validates the input.
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*/
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protected function validate() {
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$c = strlen($this->text);
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if ($c === 0) {
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throw new CINParseException('upcext2', 'No data has been entered.');
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}
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// Checking if all chars are allowed
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for ($i = 0; $i < $c; $i++) {
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if (array_search($this->text[$i], $this->keys) === false) {
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throw new CINParseException('upcext2', 'The character \'' . $this->text[$i] . '\' is not allowed.');
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}
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}
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// Must contain 2 digits
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if ($c !== 2) {
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throw new CINParseException('upcext2', 'Must contain 2 digits.');
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}
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parent::validate();
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}
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/**
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* Inverses the string when the $inverse parameter is equal to 1.
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*
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* @param string $text
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* @param int $inverse
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* @return string
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*/
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private static function inverse($text, $inverse = 1) {
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if ($inverse === 1) {
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$text = strrev($text);
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}
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return $text;
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}
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}
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?>
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