main.kv

<LoadingScreen>
    md_bg_color: .95, .95, 1, 1
    MDLabel:
        size_hint: 1, 1
        halign: "center"
        text: "Checking camera connections now..."
        color: 0, 0, 0, 1

<StartScreen>
    md_bg_color: .95, .95, 1, 1
    MDBoxLayout:
        orientation: 'vertical'
        MDTopAppBar:
            title: app.textini[app.lang]["label_adfi"]
        Image:
            source: 'adfi_client_app_data/logo/adfi.png'
        MDLabel:
            halign: "center"
            size_hint: 1, .2
            text: app.textini[app.lang]["label_choose"]
            color: 0, 0, 0, 1
        MDBoxLayout:
            adaptive_size: True
            pos_hint: {"center_x": .5}
            MDFillRoundFlatButton:
                id: en_button
                font_size: "24sp"
                text: ' English '
                on_press:
                    self.disabled = True
                on_release:
                    app.sm.transition.direction = "left"
                    app.start_cs_screen("DEFAULT")
            MDFillRoundFlatButton:
                id: ja_button
                font_size: "24sp"
                text: ' 日本語 '
                on_press:
                    self.disabled = True
                on_release:
                    app.sm.transition.direction = "left"
                    app.start_cs_screen("ja")
        MDLabel:
            halign: "center"
            font_size: "24sp"
            text: app.textini[app.lang]["label_visual"]
            color: 0, 0, 0, 1
    MDBottomAppBar:
        MDTopAppBar:
            title: app.textini[app.lang]["label_copyright"]
            icon: "close"
            type: "bottom"
            mode: "end"
            on_action_button: app.popup_open()

<QuitPopupMenu>
    orientation: 'vertical'
    MDLabel:
        halign: "center"
        font_size: "24sp"
        text: app.textini[app.lang]["quit_app_text"]
        color: 1, 1, 1, 1
    MDBoxLayout:
        adaptive_size: True
        MDFillRoundFlatButton:
            text: app.textini[app.lang]["ok"]
            font_size: "24sp"
            on_release: app.stop_app()
        MDFillRoundFlatButton:
            text: app.textini[app.lang]["cansel"]
            font_size: "24sp"
            on_release: app.popup_close()