Added basic support for label barcodes (C39 and QR).

src/Controller/ScanController.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 Jan Böhmer (https://github.com/jbtronics)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Controller;
+
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\Routing\Annotation\Route;
+
+/**
+ * @Route("/scan")
+ * @package App\Controller
+ */
+class ScanController extends AbstractController
+{
+    /**
+     * @Route("/{type}/{id}", name="scan_qr")
+     * @param  string  $type
+     * @param  int  $id
+     */
+    public function scanQRCode(string $type, int $id)
+    {
+        $this->addFlash('success', 'QR Code scanned!');
+        return $this->redirectToRoute('homepage');
+    }
+}

src/Services/LabelSystem/BarcodeGenerator.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 Jan Böhmer (https://github.com/jbtronics)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Services\LabelSystem;
+
+use App\Entity\LabelSystem\LabelOptions;
+use App\Services\LabelSystem\Barcodes\BarcodeContentGenerator;
+use Com\Tecnick\Barcode\Barcode;
+
+class BarcodeGenerator
+{
+    protected $barcodeContentGenerator;
+
+    public function __construct(BarcodeContentGenerator $barcodeContentGenerator)
+    {
+        $this->barcodeContentGenerator = $barcodeContentGenerator;
+    }
+
+    public function generateSVG(LabelOptions $options, object $target): ?string
+    {
+        $barcode = new Barcode();
+
+        switch ($options->getBarcodeType()) {
+            case 'qr':
+                $type = 'QRCODE';
+                break;
+            case 'code39':
+                $type = 'C93';
+                break;
+            case 'none':
+                return null;
+            default:
+                throw new \InvalidArgumentException('Unknown label type!');
+        }
+
+
+
+        $bobj = $barcode->getBarcodeObj($type, $this->getContent($options, $target));
+
+        return $bobj->getSvgCode();
+    }
+
+    public function getContent(LabelOptions $options, object $target): ?string
+    {
+        switch ($options->getBarcodeType()) {
+            case 'qr':
+                return $this->barcodeContentGenerator->getURLContent($target);
+            case 'code39':
+                return $this->barcodeContentGenerator->get1DBarcodeContent($target);
+            case 'none':
+                return null;
+            default:
+                throw new \InvalidArgumentException('Unknown label type!');
+        }
+    }
+
+}

src/Services/LabelSystem/Barcodes/BarcodeContentGenerator.php

@@ -0,0 +1,101 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 Jan Böhmer (https://github.com/jbtronics)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Services\LabelSystem\Barcodes;
+
+
+use App\Entity\Base\AbstractDBElement;
+use App\Entity\Parts\Manufacturer;
+use App\Entity\Parts\Part;
+use App\Entity\Parts\PartLot;
+use App\Entity\Parts\Storelocation;
+use App\Entity\Parts\Supplier;
+use App\Exceptions\EntityNotSupportedException;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+class BarcodeContentGenerator
+{
+    protected $urlGenerator;
+
+    public const PREFIX_MAP = [
+        Part::class => 'P',
+        PartLot::class => 'L',
+        Storelocation::class => 'S'
+    ];
+
+    protected const URL_MAP = [
+        Part::class => 'part',
+        PartLot::class => 'lot',
+        Storelocation::class => 'location',
+    ];
+
+    public function __construct(UrlGeneratorInterface $urlGenerator)
+    {
+        $this->urlGenerator = $urlGenerator;
+    }
+
+    /**
+     * Generates a fixed URL to the given Element that can be embedded in a 2D code (e.g. QR code).
+     * @param  AbstractDBElement  $target
+     * @return string
+     */
+    public function getURLContent(AbstractDBElement $target): string
+    {
+        if ($target instanceof Part) {
+            $type = 'part';
+        } else {
+            throw  new EntityNotSupportedException();
+        }
+
+        return  $this->urlGenerator->generate('scan_qr', [
+            'type' => $type,
+            'id' => $target->getID(),
+        ], UrlGeneratorInterface::ABSOLUTE_URL);
+    }
+
+    /**
+     * Returns a Code that can be used in a 1D barcode.
+     * The return value has a format of "L-000123"
+     * @param  AbstractDBElement  $target
+     * @return string
+     */
+    public function get1DBarcodeContent(AbstractDBElement $target): string
+    {
+        $prefix = $this->classToString(self::PREFIX_MAP, $target);
+        $id = sprintf('%06d', $target->getID());
+        return $prefix . '-' . $id;
+    }
+
+    protected function classToString(array $map, object $target): string
+    {
+        $class = get_class($target);
+        if (isset($map[$class])) {
+            return $map[$class];
+        }
+
+        foreach($map as $class => $string) {
+            if (is_a($target, $class)) {
+                return $string;
+            }
+        }
+
+        throw new \InvalidArgumentException('Unknown object class ' . get_class($target));
+    }
+}

src/Services/LabelSystem/LabelHTMLGenerator.php

@@ -23,6 +23,7 @@ namespace App\Services\LabelSystem;
 use App\Entity\Contracts\NamedElementInterface;
 use App\Entity\LabelSystem\LabelOptions;
 use App\Services\ElementTypeNameGenerator;
+use App\Services\LabelSystem\Barcodes\BarcodeContentGenerator;
 use Twig\Environment;
 
 class LabelHTMLGenerator
@@ -30,12 +31,15 @@ class LabelHTMLGenerator
     protected $twig;
     protected $elementTypeNameGenerator;
     protected $replacer;
+    protected $barcodeGenerator;
 
-    public function __construct(ElementTypeNameGenerator $elementTypeNameGenerator, LabelTextReplacer $replacer, Environment $twig)
+    public function __construct(ElementTypeNameGenerator $elementTypeNameGenerator, LabelTextReplacer $replacer, Environment $twig,
+        BarcodeGenerator $barcodeGenerator)
     {
         $this->twig = $twig;
         $this->elementTypeNameGenerator = $elementTypeNameGenerator;
         $this->replacer = $replacer;
+        $this->barcodeGenerator = $barcodeGenerator;
     }
 
     public function getLabelHTML(LabelOptions $options, array $elements): string
@@ -48,13 +52,16 @@ class LabelHTMLGenerator
         foreach ($elements as $element) {
             $twig_elements[] = [
                 'element' => $element,
-                'lines' => $this->replacer->replace($options->getLines(), $element)
+                'lines' => $this->replacer->replace($options->getLines(), $element),
+                'barcode' => $this->barcodeGenerator->generateSVG($options, $element),
+                'barcode_content' => $this->barcodeGenerator->getContent($options, $element),
             ];
         }
 
         return $this->twig->render('LabelSystem/labels/base_label.html.twig', [
             'meta_title' => $this->getPDFTitle($options, $elements[0]),
             'elements' => $twig_elements,
+            'options' => $options,
         ]);
     }