main.dart
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import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
void main() {
runApp(const AnalyzeView());
}
class AnalyzeView extends StatefulWidget {
const AnalyzeView({Key? key}) : super(key: key);
@override
_AnalyzeViewState createState() => _AnalyzeViewState();
}
class _AnalyzeViewState extends State<AnalyzeView>
with SingleTickerProviderStateMixin {
List<Offset> points = [];
CameraController cameraController = CameraController();
String? barcode = null;
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Builder(
builder: (context) {
return Stack(
children: [
CameraView(cameraController,
onDetect: (barcode, args) {
if (this.barcode != barcode.rawValue) {
this.barcode = barcode.rawValue;
if ( barcode.corners != null) {
debugPrint('Size: ${MediaQuery.of(context).size}');
ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('${barcode.rawValue}'), duration: Duration(milliseconds: 200), animation: null,));
setState(() {
final List<Offset> points = [];
double factorWidth = args.size.width / 520;
double factorHeight = args.size.height / 640;
for (var point in barcode.corners!) {
points.add(Offset(point.dx * factorWidth, point.dy * factorHeight));
}
this.points = points;
});
}
}
// Default 640 x480
}),
Container(
// width: 400,
// height: 400,
child: CustomPaint(
painter: OpenPainter(points),
),
),
Container(
alignment: Alignment.bottomCenter,
margin: EdgeInsets.only(bottom: 80.0),
child: IconButton(
icon: ValueListenableBuilder(
valueListenable: cameraController.torchState,
builder: (context, state, child) {
final color =
state == TorchState.off ? Colors.grey : Colors.white;
return Icon(Icons.bolt, color: color);
},
),
iconSize: 32.0,
onPressed: () => cameraController.torch(),
),
),
],
);
}
),
),
);
}
@override
void dispose() {
cameraController.dispose();
super.dispose();
}
void display(Barcode barcode) {
Navigator.of(context).popAndPushNamed('display', arguments: barcode);
}
}
class OpenPainter extends CustomPainter {
final List<Offset> points;
OpenPainter(this.points);
@override
void paint(Canvas canvas, Size size) {
var paint1 = Paint()
..color = Color(0xff63aa65)
..strokeWidth = 10;
//draw points on canvas
canvas.drawPoints(PointMode.points, points, paint1);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) => true;
}
class OpacityCurve extends Curve {
@override
double transform(double t) {
if (t < 0.1) {
return t * 10;
} else if (t <= 0.9) {
return 1.0;
} else {
return (1.0 - t) * 10;
}
}
}
// import 'package:flutter/material.dart';
// import 'package:flutter/rendering.dart';
// import 'package:mobile_scanner/mobile_scanner.dart';
//
// void main() {
// debugPaintSizeEnabled = false;
// runApp(HomePage());
// }
//
// class HomePage extends StatefulWidget {
// @override
// HomeState createState() => HomeState();
// }
//
// class HomeState extends State<HomePage> {
// @override
// Widget build(BuildContext context) {
// return MaterialApp(home: MyApp());
// }
// }
//
// class MyApp extends StatefulWidget {
// @override
// _MyAppState createState() => _MyAppState();
// }
//
// class _MyAppState extends State<MyApp> {
// String? qr;
// bool camState = false;
//
// @override
// initState() {
// super.initState();
// }
//
// @override
// Widget build(BuildContext context) {
// return Scaffold(
// appBar: AppBar(
// title: Text('Plugin example app'),
// ),
// body: Center(
// child: Column(
// crossAxisAlignment: CrossAxisAlignment.center,
// mainAxisAlignment: MainAxisAlignment.center,
// children: <Widget>[
// Expanded(
// child: camState
// ? Center(
// child: SizedBox(
// width: 300.0,
// height: 600.0,
// child: MobileScanner(
// onError: (context, error) => Text(
// error.toString(),
// style: TextStyle(color: Colors.red),
// ),
// qrCodeCallback: (code) {
// setState(() {
// qr = code;
// });
// },
// child: Container(
// decoration: BoxDecoration(
// color: Colors.transparent,
// border: Border.all(
// color: Colors.orange,
// width: 10.0,
// style: BorderStyle.solid),
// ),
// ),
// ),
// ),
// )
// : Center(child: Text("Camera inactive"))),
// Text("QRCODE: $qr"),
// ],
// ),
// ),
// floatingActionButton: FloatingActionButton(
// child: Text(
// "press me",
// textAlign: TextAlign.center,
// ),
// onPressed: () {
// setState(() {
// camState = !camState;
// });
// }),
// );
// }
// }