<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Barcode

 * @subpackage Object

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Ean8.php 21667 2010-03-28 17:45:14Z mikaelkael $

 */

/**

 * @see Zend_Barcode_Object_Ean13

 */

require_once 'Zend/Barcode/Object/Ean13.php';

/**

 * @see Zend_Validate_Barcode

 */

require_once 'Zend/Validate/Barcode.php';

/**

 * Class for generate Ean8 barcode

 *

 * @category   Zend

 * @package    Zend_Barcode

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Barcode_Object_Ean8 extends Zend_Barcode_Object_Ean13

{

    /**

     * Default options for Postnet barcode

     * @return void

     */

    protected function _getDefaultOptions()

    {

        $this->_barcodeLength = 8;

        $this->_mandatoryChecksum = true;

    }

    /**

     * Width of the barcode (in pixels)

     * @return integer

     */

    protected function _calculateBarcodeWidth()

    {

        $quietZone       = $this->getQuietZone();

        $startCharacter  = (3 * $this->_barThinWidth) * $this->_factor;

        $middleCharacter = (5 * $this->_barThinWidth) * $this->_factor;

        $stopCharacter   = (3 * $this->_barThinWidth) * $this->_factor;

        $encodedData     = (7 * $this->_barThinWidth) * $this->_factor * 8;

        return $quietZone + $startCharacter + $middleCharacter + $encodedData + $stopCharacter + $quietZone;

    }

        /**

     * Prepare array to draw barcode

     * @return array

     */

    protected function _prepareBarcode()

    {

        $barcodeTable = array();

        $height = ($this->_drawText) ? 1.1 : 1;

        // Start character (101)

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        $textTable = str_split($this->getText());

        // First part

        for ($i = 0; $i < 4; $i++) {

            $bars = str_split($this->_codingMap['A'][$textTable[$i]]);

            foreach ($bars as $b) {

                $barcodeTable[] = array($b , $this->_barThinWidth , 0 , 1);

            }

        }

        // Middle character (01010)

        $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);

        // Second part

        for ($i = 4; $i < 8; $i++) {

            $bars = str_split($this->_codingMap['C'][$textTable[$i]]);

            foreach ($bars as $b) {

                $barcodeTable[] = array($b , $this->_barThinWidth , 0 , 1);

            }

        }

        // Stop character (101)

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(0 , $this->_barThinWidth , 0 , $height);

        $barcodeTable[] = array(1 , $this->_barThinWidth , 0 , $height);

        return $barcodeTable;

    }

    /**

     * Partial function to draw text

     * @return void

     */

    protected function _drawText()

    {

        if ($this->_drawText) {

            $text = $this->getTextToDisplay();

            $characterWidth = (7 * $this->_barThinWidth) * $this->_factor;

            $leftPosition = $this->getQuietZone() + (3 * $this->_barThinWidth) * $this->_factor;

            for ($i = 0; $i < $this->_barcodeLength; $i ++) {

                $this->_addText(

                    $text{$i},

                    $this->_fontSize * $this->_factor,

                    $this->_rotate(

                        $leftPosition,

                        (int) $this->_withBorder * 2

                            + $this->_factor * ($this->_barHeight + $this->_fontSize) + 1

                    ),

                    $this->_font,

                    $this->_foreColor,

                    'left',

                    - $this->_orientation

                );

                switch ($i) {

                    case 3:

                        $factor = 4;

                        break;

                    default:

                        $factor = 0;

                }

                $leftPosition = $leftPosition + $characterWidth + ($factor * $this->_barThinWidth * $this->_factor);

            }

        }

    }

    /**

     * Particular validation for Ean8 barcode objects

     * (to suppress checksum character substitution)

     * @param string $value

     * @param array  $options

     */

    protected function _validateText($value, $options = array())

    {

        $validator = new Zend_Validate_Barcode(array(

            'adapter'  => 'ean8',

            'checksum' => false,

        ));

        $value = $this->_addLeadingZeros($value, true);

        if (!$validator->isValid($value)) {

            $message = implode("\n", $validator->getMessages());

            /**

             * @see Zend_Barcode_Object_Exception

             */

            require_once 'Zend/Barcode/Object/Exception.php';

            throw new Zend_Barcode_Object_Exception($message);

        }

    }

}