private async Task <BitmapDescriptor> DeterminMarkerImage(IMapPin pin, bool selected)
{
if (pin == null)
{
return(null);
}
BitmapDescriptor icon;
if (pin.Image != null)
{
var image = selected && pin.SelectedImage != null ? pin.SelectedImage : pin.Image;
icon = BitmapDescriptorFactory.FromBitmap(await image.ToBitmap(Context));
}
else
{
var color = selected ? pin.SelectedColor : pin.Color;
icon = color.ToStandardMarkerIcon();
}
if (icon == null)
{
icon = BitmapDescriptorFactory.DefaultMarker();
}
return(icon);
}
private async Task UpdateMarkerImage(IMapPin pin, Marker mapPin, bool selected)
{
if (pin == null)
{
return;
}
mapPin.SetIcon(await DeterminMarkerImage(pin, selected));
}
private void UpdatePin(MKAnnotationView annotationView, IMapPin customAnnotation, bool selected = false)
{
if (annotationView is MKPinAnnotationView pinAnnotationView)
{
var color = selected ? customAnnotation.SelectedColor : customAnnotation.Color;
pinAnnotationView.PinTintColor = color.ToUIColor();
pinAnnotationView.Layer.ZPosition = customAnnotation.ZIndex;
}
}
public void AddPin(IMapPin pin)
{
if (_googleMap == null)
{
return;
}
AddPinAsync(pin).HandleExceptions();
}
public void RemovePin(IMapPin pin)
{
var pins = Control.Annotations
.OfType <UnifiedPointAnnotation>()
.Where(point => point.Data == pin)
.Cast <IMKAnnotation>()
.ToArray();
Control.RemoveAnnotations(pins);
}
private void UpdatePinColor(MKAnnotationView annotationView, IMapPin customAnnotation, bool selected = false)
{
var pinAnnotationView = annotationView as MKPinAnnotationView;
if (pinAnnotationView != null)
{
var color = selected ? customAnnotation.SelectedColor : customAnnotation.Color;
pinAnnotationView.PinTintColor = color.ToUIColor();
}
}
public void AddPin(IMapPin pin)
{
var mapPin = new UnifiedPointAnnotation
{
Data = pin,
Title = pin.Title,
Subtitle = pin.Snippet,
Coordinate = new CLLocationCoordinate2D(pin.Location.Latitude, pin.Location.Longitude)
};
// pin.Id = mapPin;
Control.AddAnnotation(mapPin);
}
private async Task AddPinAsync(IMapPin pin)
{
if (_markers.ContainsKey(pin))
{
return;
}
var mapPin = new MarkerOptions();
mapPin.InvokeZIndex(pin.ZIndex);
if (!string.IsNullOrWhiteSpace(pin.Title))
{
mapPin.SetTitle(pin.Title);
}
if (!string.IsNullOrWhiteSpace(pin.Snippet))
{
mapPin.SetSnippet(pin.Snippet);
}
mapPin.SetPosition(new LatLng(pin.Location.Latitude, pin.Location.Longitude));
if (pin.Image != null)
{
mapPin.Anchor((float)pin.Anchor.X, (float)pin.Anchor.Y);
}
var selected = pin.EqualsSafe(Map.SelectedItem);
mapPin.SetIcon(await DeterminMarkerImage(pin, selected));
if (_markers.ContainsKey(pin))
{
return;
}
var markerView = _googleMap.AddMarker(mapPin);
_markers.Add(pin, markerView);
if (selected && Map.CanShowCalloutOnTap)
{
markerView.ShowInfoWindow();
}
else
{
markerView.HideInfoWindow();
}
}
public void RemovePin(IMapPin pin)
{
if (_googleMap == null || pin == null)
{
return;
}
Marker marker = null;
if (_markers.TryGetValue(pin, out marker))
{
marker.Remove();
_markers.Remove(pin);
}
}
private void UpdateImage(MKAnnotationView annotationView, IMapPin customAnnotation, bool selected = false)
{
if (customAnnotation.Image != null)
{
annotationView.Layer.AnchorPoint = new CGPoint(customAnnotation.Anchor.X, customAnnotation.Anchor.Y);
var newImage = selected ? customAnnotation.SelectedImage : customAnnotation.Image;
newImage.ToImage()
.ContinueWith((image) =>
{
Device.BeginInvokeOnMainThread(() =>
{
annotationView.Image = image.Result;
});
});
}
}
private void UpdatePinColor(MKAnnotationView annotationView, IMapPin customAnnotation, bool selected = false)
{
var pinAnnotationView = annotationView as MKPinAnnotationView;
if (pinAnnotationView != null)
{
var color = selected ? customAnnotation.SelectedColor : customAnnotation.Color;
pinAnnotationView.PinTintColor = color.ToUIColor();
}
}
private void UpdateImage(MKAnnotationView annotationView, IMapPin customAnnotation, bool selected = false)
{
if (customAnnotation.Image != null)
{
annotationView.Layer.AnchorPoint = new CGPoint(customAnnotation.Anchor.X, customAnnotation.Anchor.Y);
var newImage = selected ? customAnnotation.SelectedImage : customAnnotation.Image;
newImage.ToImage()
.ContinueWith((image) =>
{
Device.BeginInvokeOnMainThread(() =>
{
annotationView.Image = image.Result;
});
});
}
}
