imaginary - allow to generate heif, pdf and svg thumbnails

Signed-off-by: Simon L <szaimen@e.mail.de>

Author: szaimen

lib/private/Preview/Imaginary.php

@@ -57,7 +57,7 @@ public function getMimeType(): string {
 	}
 
 	public static function supportedMimeTypes(): string {
-		return '/image\/(bmp|x-bitmap|png|jpeg|gif|heic|svg|tiff|webp)/';
+		return '/(image\/(bmp|x-bitmap|png|jpeg|gif|heic|heif|svg|webp)|application\/pdf)/';
 	}
 
 	public function getCroppedThumbnail(File $file, int $maxX, int $maxY, bool $crop): ?IImage {
@@ -81,18 +81,30 @@ public function getCroppedThumbnail(File $file, int $maxX, int $maxY, bool $crop
 
 		$httpClient = $this->service->newClient();
 
+		$operations = [];
+
 		switch ($file->getMimeType()) {
 			case 'image/gif':
 			case 'image/png':
 				$mimeType = 'png';
 				break;
+			case 'image/svg':
+			case 'application/pdf':
+				$mimeType = 'png';
+				$operations = [
+					[
+						'operation' => 'convert',
+						'params' => [ 'type' => $mimeType, ]
+					]
+				];
+				break;
 			default:
 				$mimeType = 'jpeg';
 		}
 
 		$quality = $this->config->getAppValue('preview', 'jpeg_quality', '80');
 
-		$operations = [
+		$operations[] = [
 			[
 				'operation' => 'autorotate',
 			],