Add base gnome extensions

gnome/.local/share/extensions/BingWallpaper@ineffable-gmail.com/thumbnail.js

@@ -0,0 +1,29 @@
+// Bing Wallpaper GNOME extension
+// Copyright (C) 2017-2023 Michael Carroll
+// This extension is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// See the GNU General Public License, version 3 or later for details.
+
+import Gio from 'gi://Gio';
+import GdkPixbuf from 'gi://GdkPixbuf';
+
+const THUMBNAIL_WIDTH = 480;
+const THUMBNAIL_HEIGHT = 270;
+
+export default class Thumbnail {
+    constructor(filePath, scale = 1.0) {
+        if (!filePath) {
+            throw new Error(`need argument ${filePath}`);
+        }
+        try {
+            let w = Math.round(THUMBNAIL_WIDTH * scale);
+            let h = Math.round(THUMBNAIL_HEIGHT * scale);
+            this.pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(filePath, w, h);
+            this.srcFile = Gio.File.new_for_path(filePath);
+        } catch (err) {
+            log('Unable to create thumbnail for corrupt or incomplete file: ' + filePath + ' err: ' + err);
+        }
+    }
+};