Item {
    id: Container
    properties: Property {
        name: "flickableArea"
    }
    Rect {
        radius: 5
        color: "black"
        opacity: 0.3
        pen.color: "white"
        pen.width: 2
        x: 0
        y: flickableArea.pageYPosition * Container.height
        width: parent.width
        height: flickableArea.pageHeight * Container.height
    }
    states: [
        State {
            name: "show"
            when: flickableArea.moving
            SetProperties {
                target: Container
                opacity: 1
            }
        }
    ]
    transitions: [
        Transition {
            fromState: "*"
            toState: "*"
            NumericAnimation {
                target: Container
                properties: "opacity"
                duration: 400
            }
        }
    ]
}