自定义Video组件控制条样式,当Video全屏时，发现自定义的控制条被隐藏

@Entry  
@Component  
struct VideoPlayerPage {  
  @State videoSrc: Resource = $rawfile('videoTest.mp4')  
  @State previewUri: Resource = $r('app.media.preview');  
  controller: VideoController = new VideoController();  
  @State curRate: PlaybackSpeed = PlaybackSpeed.Speed_Forward_1_00_X  
  @State fullHeight: Length = 600  
  @State isFullScreen: boolean = false  
  build() {  
    Column() {  
      Stack({alignContent: Alignment.Bottom}) {  
        Video({  
          src: this.videoSrc,  
          previewUri: this.previewUri,  
          controller: this.controller  
        })  
          .width('100%')  
          .height(this.fullHeight)  
          .loop(false)  
          .objectFit(ImageFit.Contain)  
          .autoPlay(false)  
          .controls(false)  
        // 自定义控制器  
        Row() {  
          Text('start').onClick(() => {  
            this.controller.start() // 开始播放  
          }).margin(5).fontColor(Color.White)  
          Text('pause').onClick(() => {  
            this.controller.pause() // 暂停播放  
          }).margin(5).fontColor(Color.White)  
          Text('0.75').onClick(() => {  
            this.curRate = PlaybackSpeed.Speed_Forward_0_75_X // 0.75倍速播放  
          }).margin(5).fontColor(Color.White)  
          Text('1').onClick(() => {  
            this.curRate = PlaybackSpeed.Speed_Forward_1_00_X // 原倍速播放  
          }).margin(5).fontColor(Color.White)  
          Text('2').onClick(() => {  
            this.curRate = PlaybackSpeed.Speed_Forward_2_00_X // 2倍速播放  
          }).margin(5).fontColor(Color.White)  
          Text(this.isFullScreen ? '退出全屏' : '全屏').onClick(() => {  
            if (this.isFullScreen) {  
              this.fullHeight = 600  
            } else {  
              this.fullHeight = '100%'  
            }  
            this.isFullScreen = !this.isFullScreen  
          }).fontColor(Color.White)  
        }  
        .zIndex(1)  
      }  
    }  
    .width('100%')  
    .height('100%')  
    .justifyContent(FlexAlign.Center)  
  }  
}
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