Initial attempt to make a window with Toga

make_a_window.py

import toga
from colosseum import CSS


class Duvet(toga.App):
    def startup(self):
        main_window = toga.Window(self.name, size=(1024, 768))
        main_window.app = self

        main_box = toga.Box()

        main_box.add(self.make_toolbar())
        main_box.add(self.make_maincontent())

        main_window.content = main_box
        main_window.show()

    @staticmethod
    def make_toolbar():
        toolbar_box = toga.Box(style=CSS(
            flex_direction='row',
            justify_content='space-between',
            padding=5,
        ))

        refresh_btn = toga.Button('Refresh')
        summary_label = toga.Label('???%', alignment=toga.RIGHT_ALIGNED)
        toolbar_box.add(refresh_btn)
        toolbar_box.add(summary_label)

        return toolbar_box

    @staticmethod
    def make_maincontent():
        split = toga.SplitContainer(style=CSS(flex=1))
        split.content = [toga.Label('Hello'), Duvet.make_codebox()]

        return split

    @staticmethod
    def make_codebox():
        code_box = toga.Box(style=CSS(flex=1))
        code_text = toga.MultilineTextInput(
            readonly = True,
            style=CSS(flex=1),
        )
        code_box.add(code_text)

        return code_box


if __name__ == '__main__':
    app = Duvet('Duvet', 'org.pybee.duvet')
    app.main_loop()