Ink test

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final title = 'Ink';

    return MaterialApp(
      title: title,
      home: Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: Wrap(
          children: [
            Container(
              height: 300,
              width: 300,
              child: Stack(
                children: [
                  Center(
                    child: Ink(
                      child: Image.network('https://picsum.photos/250?image=9'),
                    ),
                  ),
                  Positioned.fill(
                    child: InkWell(
                      onTap: () {
                        print('onTap');
                      },
                    ),
                  ),
                ],
              ),
            ),
            Container(
              height: 300,
              width: 300,
              child: Ink(
                child: InkWell(
                  onTap: () {
                    print('onTap');
                  },
                  child: Center(
                    child: Image.network('https://picsum.photos/250?image=9'),
                  ),
                ),
              ),
            ),            
            Container(
              height: 300,
              width: 300,
              child: Stack(
                children: [
                  Center(
                    child: Ink(
                      child: Image.network('https://picsum.photos/250?image=9'),
                    ),
                  ),
                  Positioned.fill(
                    child: Material(
                      type: MaterialType.transparency,
                      child: InkWell(
                       onTap: () {
                          print('onTap');
                        },
                      ),
                    ),
                  ),
                ],
              ),
            ),
            Container(
              height: 300,
              width: 300,
              child: Stack(
                children: [
                  Center(
                    child: Ink(
                      child: Image.network('https://picsum.photos/250?image=9'),
                    ),
                  ),
                  Positioned.fill(
                    child: MaterialButton(
                      onPressed: () {
                        print('onTap');
                      },
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}