import QtQuick 2.2
Rectangle {
    width: 400
    height: 200

    Rectangle {
        id: rect1
        width: 100; height: 100
        color: "red"

        SequentialAnimation on x {
            loops: Animation.Infinite
            PropertyAnimation { duration: 1000; to: 200 }
            PropertyAnimation { to: 0 }
        }

        MouseArea {
            id: mouseArea

            anchors.fill: parent
            hoverEnabled: true

            states: [
                State {
                    when: mouseArea.containsMouse
                    PropertyChanges { target: rect1; color: "blue" }
                }
            ]
        }
    }
}