feat(preview): introducing new class ImaginaryPDF

Signed-off-by: ernolf <[email protected]>

Author: ernolf

config/config.sample.php

@@ -1296,7 +1296,13 @@
 
 /**
  * Set the URL of the Imaginary service to send image previews to.
- * Also requires the ``OC\Preview\Imaginary`` provider to be enabled.
+ * Also requires the
+ *  - ``OC\Preview\Imaginary``
+ * provider to be enabled in the 'enabledPreviewProviders' array, to create previews for these mimetypes:
+ * bmp, x-bitmap, png, jpeg, gif, heic, heif, svg+xml, tiff, webp and illustrator.
+ * If you want Imaginary to also create preview images from PDF Documents, you have to add
+ *  - ``OC\Preview\ImaginaryPDF``
+ * provider as well.
  *
  * See https://github.com/h2non/imaginary
  */

lib/private/Preview/Imaginary.php

@@ -40,7 +40,7 @@ public function getMimeType(): string {
 	}
 
 	public static function supportedMimeTypes(): string {
-		return '/(image\/(bmp|x-bitmap|png|jpeg|gif|heic|heif|svg\+xml|tiff|webp)|application\/(pdf|illustrator))/';
+		return '/(image\/(bmp|x-bitmap|png|jpeg|gif|heic|heif|svg\+xml|tiff|webp)|application\/illustrator)/';
 	}
 
 	public function getCroppedThumbnail(File $file, int $maxX, int $maxY, bool $crop): ?IImage {

lib/private/Preview/ImaginaryPDF.php

@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\Preview;
+
+class ImaginaryPDF extends Imaginary {
+	public function getMimeType(): string {
+		return '/application\/pdf/';
+	}
+}

lib/private/PreviewManager.php

@@ -346,6 +346,7 @@ protected function registerCoreProviders() {
 		$this->registerCoreProvider(Preview\MP3::class, '/audio\/mpeg/');
 		$this->registerCoreProvider(Preview\OpenDocument::class, '/application\/vnd.oasis.opendocument.*/');
 		$this->registerCoreProvider(Preview\Imaginary::class, Preview\Imaginary::supportedMimeTypes());
+		$this->registerCoreProvider(Preview\ImaginaryPDF::class, '/application\/pdf/');
 
 		// SVG and Bitmap require imagick
 		if ($this->imagickSupport->hasExtension()) {