update: control组件修改为适应父组件大小

lib/src/player_with_controls.dart

@@ -14,15 +14,20 @@ class PlayerWithControls extends StatelessWidget {
   Widget build(BuildContext context) {
     final ChewieController chewieController = ChewieController.of(context);
 
-    return Center(
-      child: Container(
-        width: MediaQuery.of(context).size.width,
-        child: AspectRatio(
-          aspectRatio:
+    return Stack(
+      children: [
+        Center(
+          child: Container(
+            width: MediaQuery.of(context).size.width,
+            child: AspectRatio(
+              aspectRatio:
               chewieController.aspectRatio ?? _calculateAspectRatio(context),
-          child: _buildPlayerWithControls(chewieController, context),
+              child: _buildPlayerWithControls(chewieController, context),
+            ),
+          ),
         ),
-      ),
+        _buildControls(context, chewieController),
+      ],
     );
   }
 
@@ -40,7 +45,6 @@ class PlayerWithControls extends StatelessWidget {
             ),
           ),
           chewieController.overlay ?? Container(),
-          _buildControls(context, chewieController),
         ],
       ),
     );