import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material App',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Material App Bar'),
        ),
        body: Tooltip(message: 'test', child: DemoIconButton()),
      ),
    );
  }
}

class DemoIconButton extends StatefulWidget {
  @override
  _DemoIconButtonState createState() => _DemoIconButtonState();
}

class _DemoIconButtonState extends State<DemoIconButton> {
  @override
  Widget build(BuildContext context) {
    return MouseRegion(
      child: GestureDetector(
        onTapDown: (_) => print('onTapDown'),
        onTapUp: (_) => print('onTapUp'),
        onTapCancel: () => print('onTapCancel'),
        child: Icon(
          Icons.phone_locked,
          color: Colors.purple,
        ),
      ),
    );
  }
}