Clutter Events and Animations, based on https://wiki.gnome.org/Projects/Clutter/Tutorial/EventsAndAnimations

clutter_animation_test.py

import sys

import gi

gi.require_version('Clutter', '1.0')
gi.require_version('Gtk', '3.0')
gi.require_version('GtkClutter', '1.0')

from gi.repository import Clutter  # isort:skip
from gi.repository import Gtk  # isort:skip
from gi.repository import GtkClutter  # isort:skip


def main():

    # Clutter.init(sys.argv[1:])
    GtkClutter.init([])

    window = Gtk.Window()
    window.resize(200,200)
    embed = GtkClutter.Embed(
        width_request=200,
        height_request=200,
    )
    window.add(embed)

    red = Clutter.Actor(
        x=0, y=0,
        width=200, height=200,
        background_color=Clutter.color_from_string('red')[1]
    )

    green = Clutter.Actor(
        x=200, y=0,
        width=200, height=200,
        background_color=Clutter.color_from_string('green')[1]
    )

    blue = Clutter.Actor(
        x=0, y=200,
        width=200, height=200,
        background_color=Clutter.color_from_string('blue')[1]
    )

    yellow = Clutter.Actor(
        x=200, y=200,
        width=200, height=200,
        background_color=Clutter.color_from_string('yellow')[1]
    )

    container = Clutter.Actor(
        x=-100, y=-100,
        width=400, height=400
    )

    container.save_easing_state()
    container.set_easing_mode(Clutter.AnimationMode.EASE_IN_OUT_CUBIC)
    container.set_easing_duration(400)

    for rect in (red,green,blue,yellow):
        container.add_child(rect)

    # stage = Clutter.Stage(width=200, height=200)
    stage = embed.get_stage()
    stage.add_child(container)

    def on_key_press(stage, event):
        if event.keyval == Clutter.Up:
            container.set_y(0)
        elif event.keyval == Clutter.Down:
            container.set_y(-200)
        elif event.keyval == Clutter.Left:
            container.set_x(0)
        elif event.keyval == Clutter.Right:
            container.set_x(-200)
        return True

    stage.connect('key-press-event', on_key_press)
    # stage.connect('destroy', lambda *args: Clutter.main_quit())
    # stage.show()
    # Clutter.main()

    window.connect('delete-event', Gtk.main_quit)
    window.show_all()
    Gtk.main()

if __name__ == '__main__':
    main()