Interactive simple demo from flutter-go

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  final TransformationController _transformationController = TransformationController();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Demo',
      home: Scaffold(
        appBar: AppBar(title: Text('Demo')),
        body: Stack(
          children: <Widget>[
            Center(
              child: InteractiveViewer(
                transformationController: _transformationController,
                child: Stack(
                  children: <Widget>[
                    Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Container(
                        color: Colors.brown,
                        child: Image.network(
                          'https://1001freedownloads.s3.amazonaws.com/vector/thumb/116435/go_board_09x09.png',
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}