nissy-fmc

main.dart (3163B)

---

 import 'dart:typed_data';
 import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart' show rootBundle;
 
 import 'package:nissy_flutter_ffi/nissy_flutter_ffi.dart' as nissy_flutter_ffi;
 
 void main() {
   runApp(const MyApp());
 }
 
 class MyApp extends StatefulWidget {
   const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();
 }
 
 class _MyAppState extends State<MyApp> {
   @override
 
   void initState() {
     super.initState();
   }
 
   @override
   Widget build(BuildContext context) {
     const textStyle = TextStyle(fontSize: 25);
     const spacerSmall = SizedBox(height: 10);
     return MaterialApp(
       home: Scaffold(
         appBar: AppBar(
           title: const Text('Nissy ffi test run'),
         ),
         body: SingleChildScrollView(
           child: Container(
             padding: const EdgeInsets.all(10),
             child: NissyFutureBuilder(),
 	  ),
         ),
       ),
     );
   }
 }
 
 class NissyFutureBuilder extends StatefulWidget {
   const NissyFutureBuilder({super.key});
 
   @override
   State<NissyFutureBuilder> createState() => NissyFutureBuilderState();
 }
 
 
 // Copied from https://api.flutter.dev/flutter/widgets/FutureBuilder-class.html
 class NissyFutureBuilderState extends State<NissyFutureBuilder> {
   final Future<String> _calculation = Future<String>.delayed(
     const Duration(seconds: 2),
     () => 'Data Loaded',
   );
 
   @override
   Widget build(BuildContext context) {
     return DefaultTextStyle(
       style: Theme.of(context).textTheme.displayMedium!,
       textAlign: TextAlign.center,
       child: FutureBuilder<String>(
         future: _calculation, // a previously-obtained Future<String> or null
         builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
           List<Widget> children;
           if (snapshot.hasData) {
             children = <Widget>[
               const Icon(
                 Icons.check_circle_outline,
                 color: Colors.green,
                 size: 60,
               ),
               Padding(
                 padding: const EdgeInsets.only(top: 16),
                 child: Text('Result: ${snapshot.data}'),
               ),
             ];
           } else if (snapshot.hasError) {
             children = <Widget>[
               const Icon(
                 Icons.error_outline,
                 color: Colors.red,
                 size: 60,
               ),
               Padding(
                 padding: const EdgeInsets.only(top: 16),
                 child: Text('Error: ${snapshot.error}'),
               ),
             ];
           } else {
             children = const <Widget>[
               SizedBox(
                 width: 60,
                 height: 60,
                 child: CircularProgressIndicator(),
               ),
               Padding(
                 padding: EdgeInsets.only(top: 16),
                 child: Text('Awaiting result...'),
               ),
             ];
           }
           return Center(
             child: Column(
               mainAxisAlignment: MainAxisAlignment.center,
               children: children,
             ),
           );
         },
       ),
     );
   }
 }