test.qml

Image {
    anchors.fill: parent
    horizontalAlignment: Image.AlignHCenter
    source: "images/UI_Assets/background.png"
    fillMode: Image.PreserveAspectCrop
    width: 800
    height: 600

    Image {
        id: image
        anchors.fill: parent
        source: "images/UI_Assets/background_body.png"
        fillMode: Image.PreserveAspectFit

        Image {
            id: dot
            anchors.left: parent.left
            anchors.right: parent.right
            anchors.top: parent.top
            anchors.bottom: parent.bottom
            anchors.leftMargin: 455
            anchors.rightMargin: 299
            anchors.topMargin: 277
            anchors.bottomMargin: 277
            source: "images/UI_Assets/button_circle_b.png"
            fillMode: Image.PreserveAspectFit
        }
    }