HarmonyOS 半模态转场，如何透传手势？

@CustomDialog  
struct MyDialog {  
  // 显隐控制设置为不占用  
  @Link visible: Visibility  
  controller1: CustomDialogController  
  build() {  
    Row() {  
      Column({ space: 10 }) {  
        Text('自定义弹窗').fontSize(25).fontColor(Color.Blue)  
        Flex({ justifyContent: FlexAlign.SpaceAround }) {  
          Button('取消').onClick(() => {  
            this.controller1.close()  
            this.visible = Visibility.None  
          }).backgroundColor(0xffffff).fontColor(Color.Black)  
          Button('确认').onClick(() => {  
            this.controller1.close()  
            this.visible = Visibility.None  
          }).backgroundColor(0xffffff).fontColor(Color.Black)  
        }.width("100%")  
      }.width("100%")  
    }.height(100)  
  }  
}  
@Entry  
@Component  
struct Index {  
  @State visible: Visibility = Visibility.None  
  private arr: number[] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]  
  dialogController1: CustomDialogController = new CustomDialogController({  
    builder: MyDialog({  
      visible: this.visible  
    }),  
    offset: { dx: 0, dy: 0 },  
    // 是否允许点击遮障层退出  
    autoCancel: false,  
    //设置窗口无蒙层  
    isModal: false,  
  })  
  build() {  
    Column({ space: 10 }) {  
      Button('打开弹窗').onClick(() => {  
        this.dialogController1.open()  
        this.visible = Visibility.Visible  
      })  
      List() {  
        ForEach(this.arr, (item: number) => {  
          ListItem() {  
            Row() {  
              Text('文本')  
            }.justifyContent(FlexAlign.Center).width('100%').backgroundColor(0xFFFFFF).height(100)  
          }  
        })  
      }.divider({ strokeWidth: 2, color: '#F1F3F5' }).height('90%')  
      Column()  
        .width('100%')  
        .height('100%')  
        .position({ x: 0, y: 0 })  
        .zIndex(10)  
        .backgroundColor(0x33000000)  
        .visibility(this.visible)  
        .hitTestBehavior(HitTestMode.None)  
    }.width("100%")  
  }  
}