Created
April 29, 2020 07:27
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Flutter Image ambient backlight
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// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file | |
// for details. All rights reserved. Use of this source code is governed by a | |
// BSD-style license that can be found in the LICENSE file. | |
import 'package:flutter/material.dart'; | |
import 'dart:ui'; | |
void main() => runApp(MyApp()); | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
title: 'Flutter Demo', | |
debugShowCheckedModeBanner: false, | |
theme: ThemeData( | |
primarySwatch: Colors.blue, | |
), | |
home: MyHomePage(), | |
); | |
} | |
} | |
class MyHomePage extends StatefulWidget { | |
MyHomePage({Key key}) : super(key: key); | |
@override | |
_MyHomePageState createState() => _MyHomePageState(); | |
} | |
class _MyHomePageState extends State<MyHomePage> { | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
appBar: AppBar( | |
title: Text("Image ambient backlight"), | |
), | |
body: Center( | |
child: Column( | |
crossAxisAlignment: CrossAxisAlignment.stretch, | |
children: [ | |
ImageColoredShadow(), | |
Center(child: Text("This is a caption")) | |
]))); | |
} | |
} | |
class ImageColoredShadow extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
double _size = 200.0; | |
double blurRadius = 20.0; | |
double blurSigma = 7.0; | |
String imageUrl = 'https://mp-prod-de-medialib.s3-eu-central-1.amazonaws.com/motivwelt/stockimage/buntes-laub/overview/buntes-laub-l.jpg'; | |
return Stack(children: [ | |
Center( | |
child: ClipRRect( | |
child: BackdropFilter( | |
filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10), | |
child: new Container( | |
width: _size + blurRadius, | |
height: _size + blurRadius, | |
decoration: new BoxDecoration( | |
shape: BoxShape.circle, | |
image: new DecorationImage( | |
fit: BoxFit.cover, | |
image: new NetworkImage(imageUrl))), | |
)))), | |
Positioned.fill( | |
child: BackdropFilter( | |
filter: ImageFilter.blur( | |
sigmaX: blurSigma, sigmaY: blurSigma), | |
child: Container(color: Colors.black.withOpacity(0)))), | |
Positioned.fill( | |
child: Center( | |
child: new Container( | |
width: _size, | |
height: _size, | |
decoration: new BoxDecoration( | |
shape: BoxShape.circle, | |
image: new DecorationImage( | |
fit: BoxFit.cover, | |
image: new NetworkImage(imageUrl)))), | |
), | |
) | |
]); | |
} | |
} |
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