<RightContentCls>
    disabled: True

    MDIconButton:
        icon: root.icon
        user_font_size: "16sp"
        pos_hint: {"center_y": .5}
        md_bg_color_disabled: 0, 0, 0, 0

    MDLabel:
        text: root.text
        font_style: "Caption"
        size_hint_x: None
        width: self.texture_size[0]
        text_size: None, None


<KitchenSinkMenu>
    name: 'menu'
    app: app

    Toolbar:
        id: toolbar
        pos_hint: {"top": 1}

    MDRaisedButton:
        id: button
        text: "PRESS ME"
        pos_hint: {"center_x": .5, "center_y": .5}
        on_release: root.menu.open()