Text 文字竖着显示

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Rectangle{
      anchors.centerIn: parent
      width: 100
      height: 200
      color: "green"

      Text {
          id: name
          text: qsTr("textaaaaaaa")
          color: "red"
          anchors.top: parent.bottom
          //anchors.centerIn: parent
          rotation: 90
          transformOrigin: Item.TopLeft
      }
    }
}