minor fixes

lib/model/mime_types.dart

@@ -44,14 +44,21 @@ class MimeTypes {
   static const List<String> undecodable = [crw, psd]; // TODO TLAD make it dynamic if it depends on OS/lib versions
 
   static String displayType(String mime) {
-    final patterns = [
+    switch (mime) {
-      RegExp('.*/'), // remove type, keep subtype
+      case 'image/x-icon':
-      RegExp('(X-|VND.(WAP.)?)'), // noisy prefixes
+        return 'ICO';
-      '+XML', // noisy suffix
+      case 'image/vnd.adobe.photoshop':
-      RegExp('ADOBE\\\.'), // for PSD
+      case 'image/x-photoshop':
-    ];
+        return 'PSD';
-    mime = mime.toUpperCase();
+      default:
-    patterns.forEach((pattern) => mime = mime.replaceFirst(pattern, ''));
+        final patterns = [
-    return mime;
+          RegExp('.*/'), // remove type, keep subtype
+          RegExp('(X-|VND.(WAP.)?)'), // noisy prefixes
+          '+XML', // noisy suffix
+        ];
+        mime = mime.toUpperCase();
+        patterns.forEach((pattern) => mime = mime.replaceFirst(pattern, ''));
+        return mime;
+    }
   }
 }

lib/utils/xmp.dart

@@ -2,7 +2,9 @@ class XMP {
   static const namespaceSeparator = ':';
   static const structFieldSeparator = '/';
 
+  // cf https://exiftool.org/TagNames/XMP.html
   static const Map<String, String> namespaces = {
+    'aux': 'Auxiliary Exif',
     'Camera': 'Camera',
     'crs': 'Camera Raw Settings',
     'dc': 'Dublin Core',
@@ -12,6 +14,7 @@ class XMP {
     'Iptc4xmpCore': 'IPTC Core',
     'lr': 'Lightroom',
     'MicrosoftPhoto': 'Microsoft Photo',
+    'panorama': 'Panorama',
     'pdf': 'PDF',
     'pdfx': 'PDF/X',
     'photomechanic': 'Photo Mechanic',

lib/widgets/collection/thumbnail/error.dart

@@ -15,7 +15,9 @@ class ErrorThumbnail extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Center(
+    return Container(
+      alignment: Alignment.center,
+      color: Colors.black,
       child: Tooltip(
         message: tooltip,
         preferBelow: false,