implemented map view with markers for every floodstation

This commit is contained in:
2025-01-28 16:34:25 +01:00
parent 68b0d5834d
commit 562c85079d
4 changed files with 98 additions and 3 deletions

View File

@@ -1,11 +1,74 @@
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:flutter_map_cancellable_tile_provider/flutter_map_cancellable_tile_provider.dart';
import 'package:flutter_map_marker_cluster/flutter_map_marker_cluster.dart';
import 'package:latlong2/latlong.dart';
import 'package:provider/provider.dart';
class MapPage extends StatelessWidget { import '../services/flood_station_provider.dart';
class MapPage extends StatefulWidget {
const MapPage({super.key}); const MapPage({super.key});
static const routeName = '/map'; static const routeName = '/map';
@override
State<MapPage> createState() => _MapPageState();
}
class _MapPageState extends State<MapPage> {
final mapController = MapController();
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return const Placeholder(); final floodStationProvider = context.watch<FloodStationProvider>();
if (floodStationProvider.allStations.isEmpty) {
return Center(
child: ElevatedButton(
onPressed: floodStationProvider.loadAllStations,
child: Text('Load Map'),
),
);
}
return FlutterMap(
mapController: mapController,
options: MapOptions(
initialCenter: LatLng(54.81, -4.42),
initialZoom: 6,
),
children: [
openStreetMapTileLayer,
MarkerClusterLayerWidget(
options: MarkerClusterLayerOptions(
maxClusterRadius: 45,
size: Size(30, 30),
alignment: Alignment.center,
padding: EdgeInsets.all(50),
maxZoom: 15,
markers: floodStationProvider.stationsAsMarkers,
builder: _markerBuilder),
)
],
);
}
Widget _markerBuilder(BuildContext context, List<Marker> markers) {
return Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: Theme.of(context).colorScheme.tertiary,
),
child: Center(
child: Text(
markers.length.toString(),
style: const TextStyle(color: Colors.white),
),
),
);
} }
} }
TileLayer get openStreetMapTileLayer => TileLayer(
urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
userAgentPackageName: 'dev.fleaflet.flutter_map.example',
tileProvider: CancellableNetworkTileProvider(),
);

View File

@@ -1,7 +1,10 @@
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'package:async/async.dart'; import 'package:async/async.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
import '../model/flood_station.dart'; import '../model/flood_station.dart';
import '../widgets/custom_marker.dart';
import 'api.dart'; import 'api.dart';
class FloodStationProvider extends ChangeNotifier { class FloodStationProvider extends ChangeNotifier {
@@ -13,6 +16,17 @@ class FloodStationProvider extends ChangeNotifier {
List<FloodStation> get allStations => _allStations; List<FloodStation> get allStations => _allStations;
List<FloodStation> get filteredStations => _filteredStations; List<FloodStation> get filteredStations => _filteredStations;
List<Marker> get stationsAsMarkers {
return allStations
.map<Marker>(
(e) => Marker(
alignment: Alignment.center,
point: LatLng(e.lat, e.long),
child: CustomMarker(),
),
)
.toList();
}
CancelableOperation? _filteredStationsFuture; CancelableOperation? _filteredStationsFuture;

View File

@@ -0,0 +1,15 @@
import 'package:flutter/material.dart';
class CustomMarker extends StatelessWidget {
const CustomMarker({super.key, this.label});
final String? label;
@override
Widget build(BuildContext context) {
return Icon(
Icons.location_on_sharp,
color: Theme.of(context).colorScheme.primary,
size: 30,
);
}
}

View File

@@ -17,7 +17,10 @@ dependencies:
provider: ^6.1.2 provider: ^6.1.2
timezone: ^0.10.0 timezone: ^0.10.0
async: ^2.11.0 async: ^2.11.0
flutter_osm_plugin: ^1.3.6 flutter_map: ^7.0.2
flutter_map_cancellable_tile_provider: ^3.0.2
latlong2: ^0.9.1
flutter_map_marker_cluster: ^1.4.0
dev_dependencies: dev_dependencies:
flutter_test: flutter_test: