tweaks

Signed-off-by: dom <githubaccount56556@proton.me>

lib/common/widgets/only_layout_widget.dart

@@ -1,17 +1,42 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart' show RenderProxyBox;
+import 'package:flutter/scheduler.dart';
+
+typedef LayoutCallback = void Function(Size size);
 
 class OnlyLayoutWidget extends SingleChildRenderObjectWidget {
   const OnlyLayoutWidget({
     super.key,
     super.child,
+    required this.onPerformLayout,
   });
 
+  final LayoutCallback onPerformLayout;
+
   @override
-  RenderObject createRenderObject(BuildContext context) => Layout();
+  RenderObject createRenderObject(BuildContext context) =>
+      Layout(onPerformLayout: onPerformLayout);
+
+  @override
+  void updateRenderObject(BuildContext context, Layout renderObject) {
+    super.updateRenderObject(context, renderObject);
+    renderObject.onPerformLayout = onPerformLayout;
+  }
 }
 
 class Layout extends RenderProxyBox {
+  Layout({required this.onPerformLayout});
+
+  LayoutCallback onPerformLayout;
+
+  @override
+  void performLayout() {
+    super.performLayout();
+    SchedulerBinding.instance.addPostFrameCallback((_) {
+      onPerformLayout(size);
+    });
+  }
+
   @override
   void paint(PaintingContext context, Offset offset) {}
 }