dartfx 1.0.14 dartfx: ^1.0.14 copied to clipboard
A simple lightly function calculator for dart and javascript.
import 'package:flutter/material.dart';
import 'package:dartfx/dartfx.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
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,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required 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
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final _editController = TextEditingController();
String _resultText = '';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Container(
alignment: Alignment.center,
padding: const EdgeInsets.all(24),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
TextField(
controller: _editController,
decoration: InputDecoration(hintText: 'eg: 1 + 2 * 3'),
),
const SizedBox(
height: 16,
),
ElevatedButton(
onPressed: () {
var result = fx(_editController.text);
setState(() {
_resultText = result.toString();
});
},
child: Text('Run')),
const SizedBox(
height: 16,
),
Text(_resultText,
style: TextStyle(fontSize: 28, color: Colors.green)),
],
),
),
);
}
}