fix: 全屏时展示弹幕操作

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

@@ -17,6 +17,7 @@ import 'package:pilipala/plugin/pl_player/index.dart';
 import 'package:pilipala/plugin/pl_player/models/play_repeat.dart';
 import 'package:pilipala/utils/storage.dart';
 import 'package:pilipala/services/shutdown_timer_service.dart';
+import '../../../../http/danmaku.dart';
 import '../../../../models/common/search_type.dart';
 import '../../../../models/video_detail_res.dart';
 import '../introduction/index.dart';
@@ -52,7 +53,7 @@ class _HeaderControlState extends State<HeaderControl> {
   final Box<dynamic> videoStorage = GStrorage.video;
   late List<double> speedsList;
   double buttonSpace = 8;
-  bool showTitle = false;
+  RxBool isFullScreen = false.obs;
   late String heroTag;
   late VideoIntroController videoIntroController;
   late VideoDetailData videoDetail;
@@ -69,13 +70,8 @@ class _HeaderControlState extends State<HeaderControl> {
   }
 
   void fullScreenStatusListener() {
-    widget.videoDetailCtr!.plPlayerController.isFullScreen
-        .listen((bool isFullScreen) {
-      if (isFullScreen) {
-        showTitle = true;
-      } else {
-        showTitle = false;
-      }
+    widget.videoDetailCtr!.plPlayerController.isFullScreen.listen((bool val) {
+      isFullScreen.value = val;
 
       /// TODO setState() called after dispose()
       if (mounted) {
@@ -218,6 +214,87 @@ class _HeaderControlState extends State<HeaderControl> {
     );
   }
 
+  /// 发送弹幕
+  void showShootDanmakuSheet() {
+    final TextEditingController textController = TextEditingController();
+    bool isSending = false; // 追踪是否正在发送
+    showDialog(
+      context: Get.context!,
+      builder: (BuildContext context) {
+        // TODO: 支持更多类型和颜色的弹幕
+        return AlertDialog(
+          title: const Text('发送弹幕（测试）'),
+          content: StatefulBuilder(
+              builder: (BuildContext context, StateSetter setState) {
+            return TextField(
+              controller: textController,
+            );
+          }),
+          actions: [
+            TextButton(
+              onPressed: () => Get.back(),
+              child: Text(
+                '取消',
+                style: TextStyle(color: Theme.of(context).colorScheme.outline),
+              ),
+            ),
+            StatefulBuilder(
+                builder: (BuildContext context, StateSetter setState) {
+              return TextButton(
+                onPressed: isSending
+                    ? null
+                    : () async {
+                        final String msg = textController.text;
+                        if (msg.isEmpty) {
+                          SmartDialog.showToast('弹幕内容不能为空');
+                          return;
+                        } else if (msg.length > 100) {
+                          SmartDialog.showToast('弹幕内容不能超过100个字符');
+                          return;
+                        }
+                        setState(() {
+                          isSending = true; // 开始发送，更新状态
+                        });
+                        //修改按钮文字
+                        final dynamic res = await DanmakaHttp.shootDanmaku(
+                          oid: widget.videoDetailCtr!.cid.value,
+                          msg: textController.text,
+                          bvid: widget.videoDetailCtr!.bvid,
+                          progress:
+                              widget.controller!.position.value.inMilliseconds,
+                          type: 1,
+                        );
+                        setState(() {
+                          isSending = false; // 发送结束，更新状态
+                        });
+                        if (res['status']) {
+                          SmartDialog.showToast('发送成功');
+                          // 发送成功，自动预览该弹幕，避免重新请求
+                          // TODO: 暂停状态下预览弹幕仍会移动与计时，可考虑添加到dmSegList或其他方式实现
+                          widget.controller!.danmakuController!.addItems([
+                            DanmakuItem(
+                              msg,
+                              color: Colors.white,
+                              time: widget
+                                  .controller!.position.value.inMilliseconds,
+                              type: DanmakuItemType.scroll,
+                              isSend: true,
+                            )
+                          ]);
+                          Get.back();
+                        } else {
+                          SmartDialog.showToast('发送失败，错误信息为${res['msg']}');
+                        }
+                      },
+                child: Text(isSending ? '发送中...' : '发送'),
+              );
+            })
+          ],
+        );
+      },
+    );
+  }
+
   /// 定时关闭
   void scheduleExit() async {
     const List<int> scheduleTimeChoices = [
@@ -1029,7 +1106,7 @@ class _HeaderControlState extends State<HeaderControl> {
             },
           ),
           SizedBox(width: buttonSpace),
-          if (showTitle &&
+          if (isFullScreen.value &&
               isLandscape &&
               widget.videoType == SearchType.video) ...[
             Column(
@@ -1081,6 +1158,43 @@ class _HeaderControlState extends State<HeaderControl> {
           //   ),
           //   fuc: () => _.screenshot(),
           // ),
+          if (isFullScreen.value) ...[
+            SizedBox(
+              width: 56,
+              height: 34,
+              child: TextButton(
+                style: ButtonStyle(
+                  padding: MaterialStateProperty.all(EdgeInsets.zero),
+                ),
+                onPressed: () => showShootDanmakuSheet(),
+                child: const Text(
+                  '发弹幕',
+                  style: textStyle,
+                ),
+              ),
+            ),
+            SizedBox(
+              width: 34,
+              height: 34,
+              child: Obx(
+                () => IconButton(
+                  style: ButtonStyle(
+                    padding: MaterialStateProperty.all(EdgeInsets.zero),
+                  ),
+                  onPressed: () {
+                    _.isOpenDanmu.value = !_.isOpenDanmu.value;
+                  },
+                  icon: Icon(
+                    _.isOpenDanmu.value
+                        ? Icons.subtitles_outlined
+                        : Icons.subtitles_off_outlined,
+                    size: 19,
+                    color: Colors.white,
+                  ),
+                ),
+              ),
+            ),
+          ],
           SizedBox(width: buttonSpace),
           if (Platform.isAndroid) ...<Widget>[
             SizedBox(