Added a basic text to PDF renderer.

src/Helpers/LabelResponse.php

@@ -0,0 +1,110 @@
+<?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\Helpers;
+
+
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
+use Symfony\Component\HttpFoundation\File\File;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class LabelResponse extends Response
+{
+    public function __construct($content = '', int $status = 200, array $headers = [])
+    {
+        parent::__construct($content, $status, $headers);
+    }
+
+    public function setContent($content)
+    {
+        parent::setContent($content);
+
+        $this->setAutoEtag();
+        $this->setAutoLastModified();
+        return $this;
+    }
+
+    public function prepare(Request $request)
+    {
+        parent::prepare($request);
+
+        $this->headers->set('Content-Type','application/pdf');
+
+
+        if ('HTTP/1.0' !== $request->server->get('SERVER_PROTOCOL')) {
+            $this->setProtocolVersion('1.1');
+        }
+
+        $this->ensureIEOverSSLCompatibility($request);
+    }
+
+    /**
+     * Automatically sets the Last-Modified header according the file modification date.
+     */
+    public function setAutoLastModified()
+    {
+        $this->setLastModified(new \DateTime());
+
+        return $this;
+    }
+
+    /**
+     * Automatically sets the ETag header according to the checksum of the file.
+     */
+    public function setAutoEtag()
+    {
+        $this->setEtag(base64_encode(hash('sha256', $this->content, true)));
+
+        return $this;
+    }
+
+    /**
+     * Sets the Content-Disposition header with the given filename.
+     *
+     * @param string $disposition      ResponseHeaderBag::DISPOSITION_INLINE or ResponseHeaderBag::DISPOSITION_ATTACHMENT
+     * @param string $filename         Optionally use this UTF-8 encoded filename instead of the real name of the file
+     * @param string $filenameFallback A fallback filename, containing only ASCII characters. Defaults to an automatically encoded filename
+     *
+     * @return $this
+     */
+    public function setContentDisposition($disposition, $filename, $filenameFallback = '')
+    {
+        if ('' === $filenameFallback && (!preg_match('/^[\x20-\x7e]*$/', $filename) || false !== strpos($filename, '%'))) {
+            $encoding = mb_detect_encoding($filename, null, true) ?: '8bit';
+
+            for ($i = 0, $filenameLength = mb_strlen($filename, $encoding); $i < $filenameLength; ++$i) {
+                $char = mb_substr($filename, $i, 1, $encoding);
+
+                if ('%' === $char || \ord($char) < 32 || \ord($char) > 126) {
+                    $filenameFallback .= '_';
+                } else {
+                    $filenameFallback .= $char;
+                }
+            }
+        }
+
+        $dispositionHeader = $this->headers->makeDisposition($disposition, $filename, $filenameFallback);
+        $this->headers->set('Content-Disposition', $dispositionHeader);
+
+        return $this;
+    }
+
+}