gtk.CellRendererSpinner — an object that renders a spinning animation in a cell (new in PyGTK 2.22)
gtk.CellRendererText Properties
| 
 | 
gtk.CellRendererSpinner renders a spinning
    animation in a cell, very similar to gtk.Spinner. It can
    often be used as an alternative to a gtk.CellRendererProgress
    for displaying indefinite activity, instead of actual progress.
To start the animation in a cell, set the "active" property to True and increment the "pulse" property
    at regular intervals. The usual way to set the cell renderer properties for each cell is to bind them to columns in your tree
    model using e.g. gtk.TreeViewColumn.add_attribute().
    gtk.CellRendererSpinner()| Returns : | a new gtk.CellRendererSpinner | 
This constructor is available in PyGTK 2.22 and above.
Creates a new gtk.CellRendererSpinner.