bebeboutik/modules/labelgenerate/models/generatebarcode.php

<?php
require_once dirname(__FILE__).'/php-barcode.php';
include_once(_PS_FPDF_PATH_.'fpdf.php');

class GenerateBarcode {

    static private $barcode_directory = NULL;
    private $directory;
    public $id_sale;
    public $products = array();

    const _NB_PER_LINE_ = 4;
    const _TOTAL_PER_PAGE_ = 16;

    public function __construct() {
        if (is_null(self::$barcode_directory)) {
            self::$barcode_directory = dirname(__FILE__).'/../img/';
        }
    }

    public function createFolder($name) {
        if (!(is_dir(self::$barcode_directory.$name))) {
            mkdir(self::$barcode_directory.$name, 0775);
        }
        $this->directory = self::$barcode_directory.$name;
    }

    public function generateBarcode($id_product, $id_product_attribute = NULL, $reference = NULL) {
        $ean = $this->_getEanNumber();

        $str = $ean;
        $width = 320;
        $height = 100;
        $im = imagecreatetruecolor($width, $height);
        $black  = ImageColorAllocate($im, 0x00, 0x00, 0x00);
        $white  = ImageColorAllocate($im, 0xff, 0xff, 0xff);
        imagefilledrectangle($im, 0, 0, $width, $height, $white);
        Barcode::gd($im, $black, $width / 2, $height / 2 - 10 , 0, "code128", $str, 3, 50);
        imagettftext($im, 11, 0, $width / 2 - (strlen('*'.$reference.'*')* 4), $height - 10 , $black, dirname(__FILE__).'/arial.ttf', '*'.$reference.'*' );

        if ($id_product_attribute) {
            imagegif($im, $this->directory.'/ean-'.$id_product.'-'.$id_product_attribute.'.gif');
        } else {
            imagegif($im, $this->directory.'/ean-'.$id_product.'-0.gif');
        }

        return $ean;
    }

    private function _getEanNumber() {
        // min 1111111111
        $number = Configuration::get('BARCODE_NUMBER') + 1;
        Configuration::updateValue('BARCODE_NUMBER', $number);
        return $number;
    }

    public function assocProduct($id_product, $id_product_attribute = NULL, $quantity) {
        global $cookie;
        $p = Db::getInstance()->getRow('
            SELECT pl.name
            FROM `'._DB_PREFIX_.'product` p
            LEFT JOIN `'._DB_PREFIX_.'product_lang` pl ON pl.`id_product` = p.`id_product`
            WHERE p.`id_product` = '.(int)$id_product.'
            AND pl.`id_lang`='.(int)$cookie->id_lang);
        if ($id_product_attribute) {
            $details = Product::getDetailsCombination($id_product_attribute, $cookie->id_lang);
            $name_combination = '';
            foreach ($details as $key_attr => $detail) {
                $name_combination .= $detail['attribute_name'].'-';
            }
            for ($i=1; $i <= $quantity; $i++) {
                $this->products[] = array(
                    'key' => ($id_product.'-'.$id_product_attribute),
                    'label' => ($name_combination . ' ' . $p['name'])
                );
            }
        } else {
            for ($i=1; $i <= $quantity; $i++) {
                $this->products[] = array(
                    'key' => $id_product.'-0',
                    'label' => $p['name']
                );
            }
        }
        $this->products[] = array();
    }

    public function printPDF() {
        global $cookie;

        // données test
        /*for ($i=0; $i < 30; $i++) {
            $this->products[$i] = array(
                'key'      => "125415-322",
                'label'    => "03 mois (62 cm)- Lot de 2 bodies Ri"
            );
        }
        $this->products[count($this->products)] = array();
        for ($i=31; $i < 80; $i++) {
            $this->products[$i] = array(
                'key'      => "125416-332",
                'label'    => "03 mois (62 cm)- Ensemble grenouill"
            );
        }
        $this->products[count($this->products)] = array();*/

        if (empty($this->products)) {
            die('Tous les produits ont déjà un EAN');
        }

        ob_start();
        $pdf = new FPDF();
        $nb_per_page = 0;
        $pdf->SetMargins(8,15,8);
        $pdf->SetAutoPageBreak(FALSE);
        $pdf->AddPage();
        $pdf->SetFont('Arial','',14);

        $nb_line = ceil((count($this->products)/self::_NB_PER_LINE_));
        for ($i=1; $i <= $nb_line; $i++) {
            if (empty($this->products[0])) {
                unset($this->products[0]);
            }
            if (!empty($this->products)) {
                $product_per_line = array_slice($this->products, 0, self::_NB_PER_LINE_);
                $this->products = array_splice($this->products, self::_NB_PER_LINE_);

                if($nb_per_page == self::_TOTAL_PER_PAGE_) {
                    $pdf->addPage();
                    $nb_per_page = 0;
                }
                foreach ($product_per_line as $key => $product) {
                    if (empty($product)) {
                        $pdf->Cell(48, 4, '', 0,0, 'C');
                    } else {
                        $this->_printLabel($pdf, $product['label'], 1);
                    }
                }
                $pdf->Ln(4);

                foreach ($product_per_line as $key => $product) {
                    if (empty($product)) {
                        $pdf->Cell(48, 10, '', 0,0, 'C');
                    } else {
                        $ean_image = $this->directory.'/ean-'.$product['key'].'.gif';
                        $this->_printEAN($pdf, $ean_image, 1);
                    }
                }
                $pdf->Ln(13);

                $nb_per_page += 1;
            }
        }
        $pdf->Output($this->directory.'/barcode.pdf', 'F');
        ob_clean();
        return TRUE;
    }

    private function _printLabel($pdf, $label, $limit = 1) {
        $pdf->SetFont('Arial', '', 5);
        for ($i=0; $i < $limit; $i++) {
            $pdf->Cell(48, 4, substr(utf8_decode($label), 0, 35), 0,0, 'C');
        }
    }

    private function _printEAN($pdf, $ean_image, $limit = 1) {
        for ($i=0; $i < $limit; $i++) {
            $pdf->Cell(48, 10, $pdf->Image($ean_image, $pdf->GetX(), $pdf->GetY(),48, 10), 0,0, 'C');
        }
    }

}