Qml PathView 要怎么限制显示的范围

我想让图片只显示在黄框里，黄框外的不显示，要怎么弄？试过 ListView 也有同样的问题

PathView {
    id: _pathView
    x: 490
    y: 260
    width: 300
    height: 200
    snapMode: PathView.SnapOneItem
    model: _model
    delegate: _delegate
    pathItemCount: 5
    path: _horizontalPath

Path {
    id: _horizontalPath
    startX: -_pathView.currentItem.width / 2 * 3
    startY: _pathView.currentItem.height / 2

    PathLine {
        relativeX: _pathView.currentItem.width * _pathView.pathItemCount
        relativeY: _pathView.currentItem.y
    }
}