Added a basic text to PDF renderer.

src/Services/LabelSystem/LabelHTMLGenerator.php

@@ -0,0 +1,55 @@
+<?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\Contracts\NamedElementInterface;
+use App\Entity\LabelSystem\LabelOptions;
+use App\Services\ElementTypeNameGenerator;
+use Twig\Environment;
+
+class LabelHTMLGenerator
+{
+    protected $twig;
+    protected $elementTypeNameGenerator;
+
+    public function __construct(ElementTypeNameGenerator $elementTypeNameGenerator, Environment $twig)
+    {
+        $this->twig = $twig;
+        $this->elementTypeNameGenerator = $elementTypeNameGenerator;
+    }
+
+    public function getLabelHTML(LabelOptions $options, object $element): string
+    {
+        return $this->twig->render('labels/base_label.html.twig', [
+            'meta_title' => $this->getPDFTitle($options, $element),
+            'lines' => $options->getLines(),
+        ]);
+    }
+
+    protected function getPDFTitle(LabelOptions $options, object $element)
+    {
+        if ($element instanceof NamedElementInterface) {
+            return $this->elementTypeNameGenerator->getTypeNameCombination($element, false);
+        }
+
+        return 'Part-DB label';
+    }
+}