/
main.dart
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/
main.dart
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import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:preview/preview.dart';
import 'package:random_color/random_color.dart';
import 'package:preview_example/widgets/chip.dart' as c;
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Test',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
// This makes the visual density adapt to the platform that you run
// the app on. For desktop platforms, the controls will be smaller and
// closer together (more dense) than on mobile platforms.
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page 5'),
builder: previewAppBuilder,
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
_counter++;
});
}
List<Color> colors = List.generate(40,
(index) => RandomColor().randomMaterialColor(colorHue: ColorHue.blue));
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Preview ${Frame().runtimeType}'),
),
body: Center(
child: Scrollbar(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: EdgeInsets.all(20),
child: Wrap(
crossAxisAlignment: WrapCrossAlignment.center,
runAlignment: WrapAlignment.spaceBetween,
alignment: WrapAlignment.spaceBetween,
spacing: 10,
runSpacing: 10,
children: colors
.asMap()
.entries
.map((e) =>
c.Chip(title: 'Tag ${e.key}', color: e.value))
.toList()),
),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'aIncrement',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
class IPhoneX extends PreviewProvider {
@override
String get title => 'iPhone X';
@override
List<Preview> get previews => [
Preview(
key: Key('preview'),
frame: Frames.iphoneX,
child: MyApp(),
),
];
}
class IPad extends PreviewProvider {
@override
String get title => 'iPad Pro';
@override
List<Preview> get previews => [
Preview(
frame: Frames.ipadPro12,
child: MyApp(),
),
];
}
class AllPreview extends PreviewProvider {
@override
String get title => 'All';
@override
List<Preview> get previews => Frames.values
.map(
(e) => Preview(
key: Key('preview'),
frame: e,
child: MyApp(),
),
)
.toList();
}