main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    title: 'Popup Menu Test',
    home: HomePage(),
  ));
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Popup Menu Test'),
      ),
      body: Center(
        child: PopupMenuButton(
          child: Text(
            'Show Menu',
            style: TextStyle(fontSize: 20),
          ),
          itemBuilder: (BuildContext context) {
            final GlobalKey key = GlobalKey();
            return Iterable.generate(
               5, (i) =>
                PopupMenuItem(
                  child: ListTile(
                    key: i == 0 ? key : null, // 첫 번째 아이템에만 key 부여
                    title: Text('Item $i'),
                  ),
                )
            ).toList();
            
            RenderBox box = key.currentContext.findRenderObject();
            final position = box.localToGlobal(Offset.zero);
            double x = position.dx;
            double y = position.dy;
            print('$x, $y');
          },
        ),
      ),
    );
  }
}