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import gi
gi.require_version("Gtk", "4.0")
from gi.repository import Gtk, GObject
class StackWindow(Gtk.ApplicationWindow):
def __init__(self, **kargs):
super().__init__(**kargs, title="Stack Demo")
self.set_default_size(300, 250)
header = Gtk.HeaderBar()
self.set_titlebar(header)
stack = Gtk.Stack()
stack.props.transition_type = Gtk.StackTransitionType.SLIDE_LEFT_RIGHT
stack.props.transition_duration = 1000
self.set_child(stack)
checkbutton = Gtk.CheckButton(label="Click me!")
checkbutton.props.hexpand = True
checkbutton.props.halign = Gtk.Align.CENTER
page1 = stack.add_titled(checkbutton, "check", "Check Button")
checkbutton.bind_property(
"active", page1, "needs-attention", GObject.BindingFlags.DEFAULT
)
label = Gtk.Label()
label.set_markup("<big>A fancy label</big>")
stack.add_titled(label, "label", "A label")
stack_switcher = Gtk.StackSwitcher()
stack_switcher.set_stack(stack)
header.set_title_widget(stack_switcher)
# Let's start in the second page
stack.set_visible_child_name("label")
def on_activate(app):
# Create window
win = StackWindow(application=app)
win.present()
app = Gtk.Application(application_id="com.example.App")
app.connect("activate", on_activate)
app.run(None)
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