feat(notifications): show user avatar when sending live notification on Linux (#5971)

CHANGELOG.md

@@ -9,7 +9,7 @@
 - Minor: When (re-)connecting, visible channels are now joined first. (#5850)
 - Minor: Added the ability to filter on messages by the author's user ID (example: `author.user_id == "22484632"`). (#5862)
 - Minor: Improved error messaging of the `/clip` command. (#5879)
-- Minor: Added Linux support for Live Notifications toasts. (#5881)
+- Minor: Added Linux support for Live Notifications toasts. (#5881, #5971)
 - Minor: Messages can now be deleted from the context menu in a channel. (#5956)
 - Bugfix: Fixed a potential way to escape the Lua Plugin sandbox. (#5846)
 - Bugfix: Fixed a crash relating to Lua HTTP. (#5800)

src/singletons/Toasts.cpp

@@ -310,6 +310,18 @@ void Toasts::sendLibnotify(const QString &channelName,
     NotifyNotification *notif = notify_notification_new(
         str.toUtf8().constData(), channelTitle.toUtf8().constData(), nullptr);
 
+    GdkPixbuf *img = gdk_pixbuf_new_from_file(
+        avatarFilePath(channelName).toUtf8().constData(), nullptr);
+    if (img == nullptr)
+    {
+        qWarning(chatterinoNotification) << "Failed to load user avatar image";
+    }
+    else
+    {
+        notify_notification_set_image_from_pixbuf(notif, img);
+        g_object_unref(img);
+    }
+
     notify_notification_show(notif, nullptr);
     g_object_unref(notif);
 }