opt: toggle showSubtitleBtn

lib/pages/video/detail/controller.dart

@@ -480,6 +480,15 @@ class VideoDetailController extends GetxController
         getDanmaku(subtitles);
       }
     }
+    headerControl = HeaderControl(
+      controller: plPlayerController,
+      videoDetailCtr: this,
+      floating: floating,
+      bvid: bvid,
+      videoType: videoType,
+      showSubtitleBtn: result['status'] && result['data'].subtitles.isNotEmpty,
+    );
+    plPlayerController.setHeaderControl(headerControl);
   }
 
   // 获取弹幕

lib/pages/video/detail/widgets/header_control.dart

@@ -30,7 +30,7 @@ class HeaderControl extends StatefulWidget implements PreferredSizeWidget {
     this.floating,
     this.bvid,
     this.videoType,
-    this.showSubtitleBtn,
+    this.showSubtitleBtn = true,
     super.key,
   });
   final PlPlayerController? controller;
@@ -38,7 +38,7 @@ class HeaderControl extends StatefulWidget implements PreferredSizeWidget {
   final Floating? floating;
   final String? bvid;
   final SearchType? videoType;
-  final bool? showSubtitleBtn;
+  final bool showSubtitleBtn;
 
   @override
   State<HeaderControl> createState() => _HeaderControlState();
@@ -1326,7 +1326,7 @@ class _HeaderControlState extends State<HeaderControl> {
           ],
 
           /// 字幕
-          if (widget.showSubtitleBtn ?? true)
+          if (widget.showSubtitleBtn)
             ComBtn(
               icon: const Icon(
                 Icons.closed_caption_off,

lib/plugin/pl_player/controller.dart

@@ -929,6 +929,11 @@ class PlPlayerController {
     showControls.value = !val;
   }
 
+  /// 设置/更新顶部控制栏
+  void setHeaderControl(PreferredSizeWidget? widget) {
+    headerControl = widget;
+  }
+
   void toggleFullScreen(bool val) {
     _isFullScreen.value = val;
   }