A GtkSpinner widget displays an icon-size spinning animation. It is often used as an alternative to a #GtkProgressBar for displaying indefinite activity, instead of actual progress.

To start the animation, use gtk.spinner.Spinner.start, to stop it use gtk.spinner.Spinner.stop.

CSS nodes

GtkSpinner has a single CSS node with the name spinner. When the animation is active, the :checked pseudoclass is added to this node.