showLocation function

Widget showLocation(Key? key, MapController? mapController, { LatLng? location, List<LatLng>? locationList, Widget? locationListMarker, bool moveMap = true, })

A widget defined to show zero or one or a list of geo co-ordinates with custom marker.

location Co-ordinate on which marker needs to be shown.

locationList List of Co-ordinates on which markers needs to be shown.

locationListMarker Custom widget displayed as the marker.

Implementation

Widget showLocation(Key? key, MapController? mapController,
    {LatLng? location,
    List<LatLng>? locationList,
    Widget? locationListMarker,
    bool moveMap = true}) {
  bool showMarker;
  Marker marker;
  List<Marker>? markerList;

  /// init
  showMarker = true;
  if (location != null) {
    marker = buildMarker(HybridModel(latLng: location), singleMarker: true);
    if ((mapController != null) && (moveMap)) {
      mapController.move(location, 8);
    }
  } else {
    marker = buildMarker(HybridModel(latLng: const LatLng(45, 45)),
        singleMarker: true);
    showMarker = false;
  }

  if (locationList != null) {
    markerList = [];
    for (var location in locationList) {
      var marker = buildMarker(HybridModel(latLng: location),
          singleMarker: true, marker: locationListMarker);
      markerList.add(marker);
    }
  }

  ///

  return Scaffold(
      body: SafeArea(
    child: FlutterMap(
      key: key,
      mapController: mapController ?? MapController(),
      options: MapOptions(
        center: markerList != null
            ? markerList[0].point
            : (location != null)
                ? location
                : const LatLng(45, 45),
        zoom: markerList != null
            ? 5
            : (location != null)
                ? 15
                : 4,
        plugins: [MarkerClusterPlugin(UniqueKey())],
      ),
      layers: [
        TileLayerOptions(
          minNativeZoom: 2,
          maxNativeZoom: 18,
          minZoom: 1,
          urlTemplate:
              'https://api.maptiler.com/maps/streets/{z}/{x}/{y}.png?key=${MixedConstants.MAP_KEY}',
        ),
        MarkerClusterLayerOptions(
          maxClusterRadius: 190,
          disableClusteringAtZoom: 16,
          size: const Size(5, 5),
          anchor: AnchorPos.align(AnchorAlign.center),
          fitBoundsOptions: const FitBoundsOptions(
            padding: EdgeInsets.all(50),
          ),
          markers:
              // ignore: prefer_if_null_operators
              markerList != null ? markerList : (showMarker ? [marker] : []),
          builder: (context, markers) {
            return buildMarkerCluster(markers);
          },
        ),
      ],
    ),
  ));
}