#:import ScrollEffect kivy.effects.scroll.ScrollEffect
#:import get_color_from_hex kivy.utils.get_color_from_hex


<MDSliverAppbar>

    FloatLayout:
        id: float_box

        BoxLayout:
            canvas.after:
                Color:
                    rgba:
                        root.background_color \
                        if root.background_color else \
                        get_color_from_hex(root.theme_cls.primary_color)
                    a: root._opacity
                Rectangle:
                    pos: self.pos
                    size: self.size

            id: header
            size_hint_y: None
            height: root.max_height +  root.radius[0]
            pos: self.x, root.height - root.max_height - root.radius[0]

        ScrollView:
            id: scroll
            effect_cls: ScrollEffect
            on_vbar: root.on_vbar()
            on_scroll_start:
                if not root._scroll_was_moving: root._scroll_was_moving = True

            MDBoxLayout:
                id: scroll_box
                adaptive_height: True
                orientation: "vertical"

                BoxLayout:
                    size_hint_y: None
                    height: root.max_height