Effect of filtering an image with different BoxFit settings

main.dart

import 'dart:ui';

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material App',
      theme: ThemeData.dark(),
      home: Home(),
    );
  }
}

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Material App Bar'),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: <Widget> [
          BlurredImage(BoxFit.cover),
          BlurredImage(BoxFit.contain),
        ],
      ),
      floatingActionButton: FloatingActionButton(
        child: Icon(Icons.adb),
        onPressed: () {},
      ),
    );
  }
}

class BlurredImage extends StatelessWidget {
  BlurredImage(this._fit);
  final BoxFit _fit;
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Container(
        child: ImageFiltered(
          imageFilter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
          child: Container(
            decoration: BoxDecoration(color: Colors.black.withOpacity(0.5)),
            child: Image.network(
              'https://i.imgur.com/QCNbOAo.png',
              height: 200,
              width: 200,
              fit: _fit,
            ),
          ),
        ),
      ),
    );
  }
}