AnchorAnimation QML Type

import QtQuick

Item {
    id: container
    width: 200; height: 200

    Rectangle {
        id: myRect
        width: 100; height: 100
        color: "red"
    }

    states: State {
        name: "reanchored"
        AnchorChanges { target: myRect; anchors.right: container.right }
    }

    transitions: Transition {
        // smoothly reanchor myRect and move into new position
        AnchorAnimation { duration: 1000 }
    }

    Component.onCompleted: container.state = "reanchored"
}