Qr code

lib/hardware_interface/test_interface.dart

@@ -18,5 +18,9 @@ class TestHardwareInterface extends BaseHardwareInterface {
     database.updateDatabase("test_3", sin(i / 50) + 6);
 
     database.updateDatabase("random_1", random.nextDouble());
+
+    database.updateDatabase("qr_code_lat", 50 * sin(i / 50) + 50);
+    database.updateDatabase("qr_code_lon", -71.0899931);
+    //database.updateDatabase("qr_code_lat", 42.338807462515526);
   }
 }

lib/widgets/home_pages/desktop_home_page.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_groundstation/widgets/base_widget.dart';
+import 'package:flutter_groundstation/widgets/tabs/qr_code_tab.dart';
 
 import '../../hardware_interface/test_interface.dart';
 import '../../hardware_interface/serial_groundstation_interface.dart';
@@ -36,14 +37,15 @@ class _DesktopHomePageState extends BaseHomePageState<DesktopHomePage> {
   @override
   Widget build(BuildContext context) {
     return DefaultTabController(
-      length: 3,
+      length: 4,
       child: Scaffold(
         appBar: AppBar(
           bottom: const TabBar(
             tabs: [
               Tab(text: "Test widget"),
               Tab(text: "Test tab"),
               Tab(text: "Graphs tab"),
+              Tab(text: "QR Code tab"),
             ],
           ),
         ),
@@ -55,6 +57,7 @@ class _DesktopHomePageState extends BaseHomePageState<DesktopHomePage> {
             ),
             const TestTab(),
             const GraphTab(),
+            const QrCodeTab(),
           ],
         ),
       ),

lib/widgets/qr_code_widget.dart

@@ -0,0 +1,136 @@
+import 'package:flutter/material.dart';
+import 'package:qr_flutter/qr_flutter.dart';
+import './base_widget.dart';
+
+// https://pub.dev/packages/qr_flutter
+// https://medium.com/podiihq/generating-qr-code-in-a-flutter-app-50de15e39830
+
+class QRCodeImageWidget extends StatelessWidget {
+  const QRCodeImageWidget(this.type, this.lat, this.lon, {super.key});
+
+  final String type;
+  final double lat;
+  final double lon;
+
+  String getData() {
+    if (type == "Google") {
+      return "https://www.google.com/maps/search/?api=1&query=$lat%2C$lon";
+    } else if (type == "Apple") {
+      return "https://maps.apple.com/?ll=$lat,$lon&q=Dropped%20Pin";
+    } else if (type == "Geo") {
+      return "geo:$lat,$lon";
+    } else {
+      return "$lat,$lon";
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(children: [
+      Flexible(
+          child: QrImageView(
+        data: getData(),
+      )),
+      Text(getData())
+    ]);
+  }
+}
+
+class QRCodeWidget extends StatefulWidget {
+  const QRCodeWidget({super.key});
+  @override
+  _QRCodeWidgetState createState() => _QRCodeWidgetState();
+}
+
+class _QRCodeWidgetState extends BaseWidgetState<QRCodeWidget> {
+  String mapType = 'Google';
+  String boardType = 'FCB';
+  bool frozen = false;
+  double curLat = 0.0;
+  double curLon = 0.0;
+
+  String printFrozen(bool yes) {
+    return yes ? "frozen" : "not frozen";
+  }
+
+  double getLatNotFrozen() {
+    if (!frozen) {
+      curLat = getDatabaseValue("qr_code_lat", 0.0);
+    }
+    return curLat;
+  }
+
+  double getLonNotFrozen() {
+    if (!frozen) {
+      curLon = getDatabaseValue("qr_code_lon", 0.0);
+    }
+    return curLon;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        appBar: AppBar(
+          centerTitle: true,
+          title: const Text('Location QR Code Generator'),
+        ),
+        body: Center(
+          child: Container(
+              child: Column(children: [
+            Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.center,
+              children: [
+                const Spacer(),
+                DropdownButton<String>(
+                  value: mapType,
+                  onChanged: (String? newValue) {
+                    setState(() {
+                      mapType = newValue!;
+                    });
+                  },
+                  items: <String>['Google', 'Apple', 'Geo', 'Raw'].map<DropdownMenuItem<String>>((String value) {
+                    return DropdownMenuItem<String>(
+                      value: value,
+                      child: Text(value),
+                    );
+                  }).toList(),
+                ),
+                const Spacer(),
+                DropdownButton<String>(
+                  value: boardType,
+                  onChanged: (String? newValue) {
+                    setState(() {
+                      boardType = newValue!;
+                    });
+                  },
+                  items: <String>['FCB', 'EggFinder'].map<DropdownMenuItem<String>>((String value) {
+                    return DropdownMenuItem<String>(
+                      value: value,
+                      child: Text(value),
+                    );
+                  }).toList(),
+                ),
+                const Spacer(),
+                Text(printFrozen(frozen)),
+                Checkbox(
+                  value: frozen,
+                  onChanged: (bool? value) {
+                    setState(() {
+                      frozen = value!;
+                    });
+                  },
+                ),
+                const Spacer(),
+              ],
+            ),
+            Flexible(
+                child: QRCodeImageWidget(
+              mapType,
+              getLatNotFrozen(),
+              getLonNotFrozen(),
+            )),
+          ])),
+        ));
+  }
+}

lib/widgets/tabs/qr_code_tab.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+
+import '../qr_code_widget.dart';
+
+class QrCodeTab extends StatelessWidget {
+  const QrCodeTab({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    // return GridView.count(
+    //   primary: false,
+    //   padding: const EdgeInsets.all(20),
+    //   crossAxisSpacing: 10,
+    //   mainAxisSpacing: 10,
+    //   crossAxisCount: 3,
+    //   children: <Widget>[
+    //const QRCodeWidget(),
+    return const QRCodeWidget();
+    //],
+    //);
+  }
+}

pubspec.yaml

@@ -32,6 +32,7 @@ dependencies:
     sdk: flutter
   auto_size_text: 3.0.0
 
+  qr_flutter: ^4.1.0
 
 
   # The following adds the Cupertino Icons font to your application.