bidi 1.0.0+1 bidi: ^1.0.0+1 copied to clipboard
Implementation of the BIDI algorithm, as described in http://www.unicode.org/reports/tr9/tr9-17.html.
import 'package:flutter/material.dart';
import 'package:bidi/bidi.dart' as bidi;
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter BiDi Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String _visual;
final _logicalController = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Directionality(
textDirection: TextDirection.rtl,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: TextFormField(
controller: _logicalController,
decoration: InputDecoration(
border: OutlineInputBorder(),
),
onChanged: (value) {
if (value.length == 0) {
return;
}
final visual = bidi.logicalToVisual(value);
setState(() {
_visual = visual.reversed
.map((e) => String.fromCharCode(e))
.join(' ');
});
},
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Center(
child: Text(
_visual ?? '',
style: Theme.of(context).textTheme.headline4,
),
),
),
],
),
),
),
);
}
}