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import QtQuick 2.2

Rectangle {
    anchors.top: atTop ? flickable.top : undefined
    anchors.bottom: atTop ? undefined : flickable.bottom
    anchors.left: isScreenPortrait ? parent.left : parent.horizontalCenter
    anchors.right: parent.right
    height: 30
    visible: flickable.visible
    opacity: atTop
        ? (flickable.contentY > showDistance ? 1 : 0)
        : (flickable.contentY < flickable.contentHeight - showDistance ? 1 : 0)
    scale: atTop ? 1 : -1

    readonly property real showDistance: 0
    property Flickable flickable
    property color gradientColor
    /*! \c true if this indicator is at the top of the item */
    property bool atTop

    Behavior on opacity {
        NumberAnimation {
        }
    }

    gradient: Gradient {
        GradientStop {
            position: 0.0
            color: gradientColor
        }
        GradientStop {
            position: 1.0
            color: "transparent"
        }
    }
}
