add structure

2020-05-29 07:45:27 +06:30
parent 4c851d9971
commit bad27ba5c4
272 changed files with 36065 additions and 174 deletions
--- a/lib/pages/sign.dart
+++ b/lib/pages/sign.dart
@@ -0,0 +1,103 @@
+import 'dart:typed_data';
+import 'dart:ui' as ui;
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_signature_pad/flutter_signature_pad.dart';
+
+class SignPage extends StatefulWidget {
+  SignPage({Key key}) : super(key: key);
+
+  @override
+  _SignPageState createState() => _SignPageState();
+}
+
+class _SignPageState extends State<SignPage> {
+  ByteData _img = ByteData(0);
+  var color = Colors.blue;
+  var strokeWidth = 5.0;
+  final _sign = GlobalKey<SignatureState>();
+
+  @override
+  void initState() {
+    super.initState();
+    SystemChrome.setPreferredOrientations([DeviceOrientation.landscapeLeft]);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Column(
+        children: <Widget>[
+          Padding(
+            padding: const EdgeInsets.all(10.0),
+            child: Text("Driver Signature"),
+          ),
+          Expanded(
+            child: Container(
+              child: Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: Signature(
+                  color: color,
+                  key: _sign,
+                  onSign: () {
+                    final sign = _sign.currentState;
+                  },
+                  strokeWidth: strokeWidth,
+                ),
+              ),
+              color: Colors.black12,
+            ),
+          ),
+          _img.buffer.lengthInBytes == 0
+              ? Container()
+              : LimitedBox(
+                  maxHeight: 200.0,
+                  child: Image.memory(_img.buffer.asUint8List())),
+          Column(
+            children: <Widget>[
+              Row(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Padding(
+                    padding: const EdgeInsets.all(8.0),
+                    child: MaterialButton(
+                        color: Colors.green,
+                        onPressed: () async {
+                          final sign = _sign.currentState;
+                          final image = await sign.getData();
+                          var data = await image.toByteData(
+                              format: ui.ImageByteFormat.png);
+                          Uint8List buffer = data.buffer.asUint8List();
+                          // String path = await _localPath;
+                          // File file = await new File(path + "/sign.png")
+                          //     .writeAsBytes(buffer.asUint8List(
+                          //         data.offsetInBytes, data.lengthInBytes));
+                          Navigator.pop(context, buffer);
+                        },
+                        child: Text("OK")),
+                  ),
+                  Padding(
+                    padding: const EdgeInsets.all(8.0),
+                    child: MaterialButton(
+                        color: Colors.grey,
+                        onPressed: () {
+                          final sign = _sign.currentState;
+                          sign.clear();
+                          setState(() {
+                            _img = ByteData(0);
+                          });
+                        },
+                        child: Text("Clear")),
+                  ),
+                ],
+              ),
+            ],
+          )
+        ],
+      ),
+    );
+  }
+
+}