1 files changed, 9 insertions, 1 deletions
diff --git a/toolbox.py b/toolbox.py
index b4e624e..0646892 100644
--- a/toolbox.py
+++ b/toolbox.py
@@ -814,4 +814,12 @@ class ImageToolbar(Gtk.Toolbar):
         self.properties['name'] = self._EFFECT_RAINBOW_NAME
 
     def invert_colors(self, widget):
-        self._activity.area.invert_colors(widget)
+        window = self.get_window()
+        old_cursor = window.get_cursor()
+        source_id = GObject.idle_add(self.set_watch_cursor, window)
+        self._activity.area.invert_colors(widget, old_cursor,
+            source_id, window)
+
+    def set_watch_cursor(self, window):
+        window.set_cursor(Gdk.Cursor.new(Gdk.CursorType.WATCH))
+        return True