fix(flutter): 底栏右侧改为清屏

lib/pages/player/widgets/player_more_sheet.dart

@@ -18,6 +18,7 @@ class PlayerMoreState {
     required this.speed,
     required this.qualities,
     required this.textScale,
+    required this.pipAvailable,
   });
 
   /// 当前倍速。
@@ -28,6 +29,9 @@ class PlayerMoreState {
 
   /// 当前文字缩放比例。
   final double textScale;
+
+  /// 设备是否提供画中画入口。
+  final bool pipAvailable;
 }
 
 /// 更多面板动作集合。
@@ -39,6 +43,7 @@ class PlayerMoreActions {
     required this.onClear,
     required this.onDownload,
     required this.onReport,
+    this.onPip,
   });
 
   /// 倍速变化。
@@ -55,6 +60,9 @@ class PlayerMoreActions {
 
   /// 投诉当前剧。
   final VoidCallback onReport;
+
+  /// 进入画中画；平台不支持时为空。
+  final VoidCallback? onPip;
 }
 
 /// K29 播放页白色更多面板。
@@ -136,6 +144,13 @@ class _PlayerMoreSheetState extends State<PlayerMoreSheet> {
                 title: l10n.offlineCache,
                 onTap: () => _closeThen(widget.actions.onDownload),
               ),
+              if (widget.state.pipAvailable && widget.actions.onPip != null)
+                _enabledRow(
+                  key: const Key('player-more-pip'),
+                  icon: Icons.picture_in_picture_alt_rounded,
+                  title: l10n.pictureInPicture,
+                  onTap: () => _closeThen(widget.actions.onPip!),
+                ),
               _textSizeRow(l10n),
               _disabledRow(
                 key: const Key('player-more-cast'),

lib/pages/player/widgets/player_overlay.dart

@@ -281,14 +281,13 @@ class PlayerPlaybackOverlay extends StatelessWidget {
             ),
           ),
         ),
-        if (actions.onPip != null) ...[
-          const SizedBox(width: 8),
-          _PipButton(
-            key: const Key('player-pip'),
-            tooltip: data.l10n.pictureInPicture,
-            onPressed: actions.onPip!,
-          ),
-        ],
+        const SizedBox(width: 8),
+        _BottomIconButton(
+          key: const Key('player-bottom-clear-screen'),
+          tooltip: data.l10n.clearScreen,
+          icon: Icons.fullscreen_rounded,
+          onPressed: actions.onClear,
+        ),
       ],
     );
   }

lib/pages/player/widgets/player_overlay_models.dart

@@ -87,7 +87,6 @@ class PlayerOverlayActions {
     required this.onMore,
     required this.onScrubStart,
     required this.onSeek,
-    this.onPip,
   });
 
   /// 返回上一页。
@@ -131,7 +130,4 @@ class PlayerOverlayActions {
 
   /// 提交进度跳转。
   final Future<void> Function(Duration)? onSeek;
-
-  /// 进入小窗播放。
-  final VoidCallback? onPip;
 }

lib/pages/player/widgets/player_overlay_parts.dart

@@ -73,10 +73,16 @@ class _SpeedEntry extends StatelessWidget {
   }
 }
 
-class _PipButton extends StatelessWidget {
-  const _PipButton({super.key, required this.tooltip, required this.onPressed});
+class _BottomIconButton extends StatelessWidget {
+  const _BottomIconButton({
+    super.key,
+    required this.tooltip,
+    required this.icon,
+    required this.onPressed,
+  });
 
   final String tooltip;
+  final IconData icon;
   final VoidCallback onPressed;
 
   @override
@@ -91,7 +97,7 @@ class _PipButton extends StatelessWidget {
           foregroundColor: AppColors.onSurface,
         ),
         onPressed: onPressed,
-        icon: const Icon(Icons.picture_in_picture_alt_rounded, size: 17),
+        icon: Icon(icon, size: 17),
       ),
     );
   }