flutter_map_dragmarker

A drag marker for flutter_map.

See the example/lib/main.dart for usage, but the included example below in this file should show pretty much everything.

Usage

• This layer should probably be the last layer so IF it needs to be dragged
  (otherwise why would you use this :)). If not, other layers may intercept
  the gestures.
• offset and dragOffset are there for tweaking icon/images if they should
  not get displayed centered.
• height is mainly for Images, use Icon(..., size: ...), but be aware
  internal calculations are based on size.
• rotateMarker toggles the markers' rotation on and off. True keeping markers
  upright.
• Use scrollMapNearEdge if the map should scroll when a marker is dragged
  near the edge.
• Enable useLongPress if you want to enable dragging after a long press

  FlutterMap(
    options: MapOptions(center: LatLng(45.5231, -122.6765), zoom: 9),
    children: [
      TileLayer(
        urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
      ),
      DragMarkers(
        markers: [
          DragMarker(
            point: LatLng(45.535, -122.675),
            offset: const Offset(0.0, -8.0),
            builder: (ctx) => const Icon(Icons.location_on, size: 50),
            onDragUpdate: (details, latLng) => print(latLng),
          ),
        ],
      ),
    ],
  ),

Further notes

It may be interesting to move the map alternately to marker, too. So the marker stays in place, but then technically you aren't dragging anymore, so thoughts welcome.