Python – Spinner in GTK+ 3

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The Gtk.Spinner displays an icon-size spinning animation. It is often used as an alternative to a GtkProgressBar for displaying an indefinite activity. We can use Gtk.Spinner.start() to start and Gtk.Spinner.stop() to stop the animation.

Example :

Python3

import gi 
  
gi.require_version("Gtk", "3.0") 
from gi.repository import Gtk 
  
  
class SpinnerAnimation(Gtk.Window): 
    def __init__(self): 
  
        Gtk.Window.__init__(self, title="GFG") 
        self.set_border_width(3) 
        self.connect("destroy", Gtk.main_quit) 
  
        self.button = Gtk.ToggleButton(label="Start Spinning") 
        self.button.connect("toggled", self.on_button_toggled) 
        self.button.set_active(False) 
  
        self.spinner = Gtk.Spinner() 
  
        self.grid = Gtk.Grid() 
        self.grid.add(self.button) 
        self.grid.attach_next_to( 
            self.spinner, self.button, Gtk.PositionType.BOTTOM, 1, 2
        ) 
        self.grid.set_row_homogeneous(True) 
  
        self.add(self.grid) 
        self.show_all() 
  
    def on_button_toggled(self, button): 
  
        if button.get_active(): 
            self.spinner.start() 
            self.button.set_label("Stop Spinning") 
  
        else: 
            self.spinner.stop() 
            self.button.set_label("Start Spinning") 
  
  
myspinner = SpinnerAnimation() 
  
Gtk.main()