import gi

gi.require_version("Gtk", "3.0")

from gi.repository import Gtk

class SpinButtonWindow(Gtk.Window):

def __init__(self):

super().__init__(title="SpinButton Demo")

self.set_border_width(10)

hbox = Gtk.Box(spacing=6)

self.add(hbox)

adjustment = Gtk.Adjustment(upper=100, step_increment=1, page_increment=10)

self.spinbutton = Gtk.SpinButton()

self.spinbutton.set_adjustment(adjustment)

self.spinbutton.connect("value-changed", self.on_value_changed)

hbox.pack_start(self.spinbutton, False, False, 0)

check_numeric = Gtk.CheckButton(label="Numeric")

check_numeric.connect("toggled", self.on_numeric_toggled)

hbox.pack_start(check_numeric, False, False, 0)

check_ifvalid = Gtk.CheckButton(label="If Valid")

check_ifvalid.connect("toggled", self.on_ifvalid_toggled)

hbox.pack_start(check_ifvalid, False, False, 0)

def on_value_changed(self, scroll):

print(self.spinbutton.get_value_as_int())

def on_numeric_toggled(self, button):

self.spinbutton.set_numeric(button.get_active())

def on_ifvalid_toggled(self, button):

if button.get_active():

policy = Gtk.SpinButtonUpdatePolicy.IF_VALID

else:

policy = Gtk.SpinButtonUpdatePolicy.ALWAYS

self.spinbutton.set_update_policy(policy)

win = SpinButtonWindow()

win.connect("destroy", Gtk.main_quit)

win.show_all()

Gtk.main()