114 lines
3.3 KiB
Dart
114 lines
3.3 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_map/flutter_map.dart';
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import 'package:flutter_map_cancellable_tile_provider/flutter_map_cancellable_tile_provider.dart';
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import 'package:flutter_map_marker_cluster/flutter_map_marker_cluster.dart';
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import 'package:latlong2/latlong.dart';
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import 'package:provider/provider.dart';
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import '../model/flood_station.dart';
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import '../services/flood_station_provider.dart';
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import '../widgets/custom_marker.dart';
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class MapPage extends StatefulWidget {
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const MapPage({super.key});
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static const routeName = '/map';
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@override
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State<MapPage> createState() => _MapPageState();
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}
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class _MapPageState extends State<MapPage> {
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final mapController = MapController();
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@override
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Widget build(BuildContext context) {
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final floodStationProvider = context.watch<FloodStationProvider>();
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if (floodStationProvider.allStations.isEmpty) {
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return Center(
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child: ElevatedButton(
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onPressed: floodStationProvider.loadAllStations,
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child: Text('Load Map'),
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),
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);
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}
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return FlutterMap(
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mapController: mapController,
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options: MapOptions(
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cameraConstraint: CameraConstraint.containCenter(
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bounds: LatLngBounds.fromPoints(floodStationProvider.allStations
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.map<LatLng>(
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(e) => LatLng(e.lat, e.long),
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)
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.toList())),
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initialCenter: LatLng(54.81, -4.42),
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initialZoom: 6,
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),
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children: [
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openStreetMapTileLayer,
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MarkerClusterLayerWidget(
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options: MarkerClusterLayerOptions(
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maxClusterRadius: 45,
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size: Size(30, 30),
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alignment: Alignment.center,
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padding: EdgeInsets.all(50),
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maxZoom: 15,
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markers: _stationsAsMarkers(floodStationProvider.allStations),
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builder: _markerBuilder),
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)
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],
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);
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}
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Widget _markerBuilder(BuildContext context, List<Marker> markers) {
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return Container(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(20),
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color: Theme.of(context).colorScheme.tertiary,
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),
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child: Center(
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child: Text(
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markers.length.toString(),
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style: const TextStyle(color: Colors.white),
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),
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),
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);
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}
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List<Marker> _stationsAsMarkers(List<FloodStation> stations) {
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return stations
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.map<Marker>(
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(station) => Marker(
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alignment: Alignment.center,
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point: LatLng(station.lat, station.long),
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child: CustomMarker(
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onTap: () => _markerTapped(station),
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),
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),
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)
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.toList();
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}
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_markerTapped(FloodStation station) {
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showDialog(
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context: context,
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builder: (context) {
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return Center(
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child: Card(
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child: SizedBox(
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width: 300,
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height: 300,
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child: Text(station.label),
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),
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),
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);
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},
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);
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}
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}
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TileLayer get openStreetMapTileLayer => TileLayer(
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urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
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userAgentPackageName: 'dev.fleaflet.flutter_map.example',
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tileProvider: CancellableNetworkTileProvider(),
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);
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