annotations/Azaion.Annotator/Controls/MapMatcherEventHandler.cs

using Azaion.Common.Services;
using GMap.NET;
using GMap.NET.WindowsPresentation;
using MediatR;

namespace Azaion.Annotator.Controls;

public class MapMatcherEventHandler(MapMatcher mapMatcher) : INotificationHandler<GPSMatcherResultEvent>
{
    public Task Handle(GPSMatcherResultEvent result, CancellationToken cancellationToken)
    {
        mapMatcher.Dispatcher.Invoke(() =>
        {
            var marker = new GMapMarker(new PointLatLng(result.Latitude, result.Longitude));
            var ann = mapMatcher.Annotations[result.Index];
            marker.Shape = new CircleVisual(marker, System.Windows.Media.Brushes.Blue)
            {
                Text = result.Image
            };
            mapMatcher.SatelliteMap.Markers.Add(marker);
            ann.Lat = result.Latitude;
            ann.Lon = result.Longitude;
            mapMatcher.SatelliteMap.Position = new PointLatLng(result.Latitude, result.Longitude);
            mapMatcher.SatelliteMap.ZoomAndCenterMarkers(null);
        });
        return Task.CompletedTask;
    }
}