如何根据文本的大小在QML中设置标签的大小？

import QtQuick 2.0
import QtQuick.Controls 2.0
import QtQuick.Window 2.0
import QtQuick.Layouts 1.0
import QtQuick.Controls.Styles 1.4

Window {
    visible: true
    width: 400
    height: 200
    title: "Dynamic Label Size"

    ColumnLayout {
        anchors.centerIn: parent

        TextField {
            id: inputText
            placeholderText: "Enter text"
        }

        Label {
            id: dynamicLabel
            text: inputText.text
            font.pixelSize: calculateFontSize(inputText.text)
            wrapMode: Text.WordWrap
            Layout.fillWidth: true
            Layout.fillHeight: true
        }
    }

    function calculateFontSize(text) {
        var fontMetrics = new QtQuick.FontMetrics(dynamicLabel.font)
        var maxWidth = dynamicLabel.width
        var maxHeight = dynamicLabel.height

        var fontSize = 1
        while (fontMetrics.width(text, fontSize) < maxWidth && fontMetrics.height(fontSize) < maxHeight) {
            fontSize++
        }

        return fontSize - 1
    }
}