fix(player): 增加退出清屏浮动按钮

lib/pages/player/player_view.dart

@@ -24,6 +24,7 @@ import '../../l10n/app_localizations.dart';
 import 'player_binding.dart';
 import 'player_logic.dart';
 import 'widgets/home_feed_overlay.dart';
+import 'widgets/exit_clear_screen_button.dart';
 import 'widgets/player_center_toggle.dart';
 import 'widgets/player_featured_comment.dart';
 import 'widgets/seek_progress_bar.dart';
@@ -213,9 +214,8 @@ class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
             child: GestureDetector(
               key: const Key('home-feed-video-toggle'),
               behavior: HitTestBehavior.opaque,
-              onTap: () => logic.session.setUserWantsPlay(
-                !logic.session.userWantsPlay,
-              ),
+              onTap: () =>
+                  logic.session.setUserWantsPlay(!logic.session.userWantsPlay),
             ),
           ),
         if (widget.homeMode &&
@@ -447,6 +447,16 @@ class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
               onTap: () => setState(() => _feedChromeVisible = true),
             ),
           ),
+        if (widget.homeMode && !_feedChromeVisible)
+          Positioned(
+            top: 8,
+            right: 12,
+            child: ExitClearScreenButton(
+              key: const Key('home-feed-exit-clear-screen'),
+              tooltip: l10n.exitClearScreen,
+              onPressed: () => setState(() => _feedChromeVisible = true),
+            ),
+          ),
       ],
     );
   }
@@ -762,6 +772,16 @@ class _PlaybackOverlayState extends State<_PlaybackOverlay> {
                 ),
               ],
             ),
+          if (!_controlsVisible)
+            Positioned(
+              top: 8,
+              right: 12,
+              child: ExitClearScreenButton(
+                key: const Key('player-exit-clear-screen'),
+                tooltip: widget.l10n.exitClearScreen,
+                onPressed: () => setState(() => _controlsVisible = true),
+              ),
+            ),
         ],
       ),
     );

lib/pages/player/widgets/exit_clear_screen_button.dart

@@ -0,0 +1,34 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+
+/// Shared floating action used to leave clear-screen mode.
+class ExitClearScreenButton extends StatelessWidget {
+  const ExitClearScreenButton({
+    super.key,
+    required this.tooltip,
+    required this.onPressed,
+  });
+
+  final String tooltip;
+  final VoidCallback onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      width: 36,
+      height: 36,
+      child: IconButton(
+        tooltip: tooltip,
+        onPressed: onPressed,
+        padding: EdgeInsets.zero,
+        style: IconButton.styleFrom(
+          backgroundColor: const Color(0x80000000),
+          foregroundColor: Colors.white,
+          shape: const CircleBorder(),
+        ),
+        icon: const Icon(Icons.fullscreen_exit_rounded, size: 18),
+      ),
+    );
+  }
+}