SelectionFractalsMenu.kv

<SelectionFractalsMenu>:
    FitImage:
        source: 'Menu2.jpg'
    MDBoxLayout:
        orientation: 'vertical'
        padding: 50
        spacing: 15
        MDRaisedButton:
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            size_hint: 0.5, 0.1
            text: "Метод хаоса"
            text_color: 0, 0, 0, 1
            md_bg_color: .95, .87, .60, 0.7
            on_release:
                root.manager.transition.direction = 'right'
                root.manager.current = 'chaos'
                root.manager.current_screen.ids.bottom_nav_chaos.switch_tab('screen 1')
                # Из-за бага приходится перезагружать кнопки
                root.manager.current_screen.ids.bottom_nav_chaos._refresh_tabs()

        MDRaisedButton:
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            size_hint: 0.5, 0.1
            text: "Папоротник Барнсли"
            text_color: 0, 0, 0, 1
            md_bg_color: .95, .87, .60, 0.7
            on_release:
                root.manager.transition.direction = 'left'
                root.manager.current = 'fern'
                root.manager.current_screen.ids.bottom_nav_barnsley.switch_tab('screen 1')
                # Из-за бага приходится перезагружать кнопки
                root.manager.current_screen.ids.bottom_nav_barnsley._refresh_tabs()

        MDRaisedButton:
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            size_hint: 0.5, 0.1
            text: "В разработке..."
            text_color: 0, 0, 0, 1
            md_bg_color: .95, .87, .60, 0.7

        MDRaisedButton:
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            size_hint: 0.5, 0.1
            text: "В главное меню"
            text_color: 0, 0, 0, 1
            md_bg_color: .95, .87, .60, 0.7
            on_release:
                root.manager.transition.direction = 'down'
                root.manager.current = 'menu'
        Widget:
            size_hint: 1, 0.5