public static MGLMapCamera ToNative(this CameraPosition cameraPosition, CGSize size)
{
var heading = cameraPosition.Bearing ?? 0;
var centerCoordinate = cameraPosition.Target ?? LatLng.Zero;
var pitch = (nfloat)(cameraPosition.Tilt ?? 0);
var altitude = 0.0;
// TODO iOS Convert Zoom to Altitude
if (cameraPosition.Zoom.HasValue)
{
var result = MapboxIndependentFunction.MGLAltitudeForZoomLevel(
cameraPosition.Zoom.Value,
(nfloat)(cameraPosition.Tilt ?? 0),
cameraPosition.Target?.Lat ?? 0,
size);
altitude = result;
}
var camera = MGLMapCamera.CameraLookingAtCenterCoordinateAndAltitude(
centerCoordinate.ToCLCoordinate(),
altitude,
pitch,
heading
);
return(camera);
}
public static MGLMapCamera ToNative(this CameraBounds cameraBounds, MGLMapView map)
{
var camera = map.CameraThatFitsCoordinateBounds(
cameraBounds.Bounds.ToNative(),
cameraBounds.Padding.ToEdgeInsets()
);
var heading = cameraBounds.Bearing ?? camera.Heading;
var pitch = (nfloat)(cameraBounds.Tilt ?? camera.Pitch);
var result = MGLMapCamera.CameraLookingAtCenterCoordinateAndAltitude(
camera.CenterCoordinate,
camera.Altitude,
pitch,
heading
);
return(result);
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (MapView == null || Element == null)
{
return;
}
if (e.PropertyName == FormsMap.CenterProperty.PropertyName)
{
UpdateCenter();
}
else if (e.PropertyName == FormsMap.ZoomLevelProperty.PropertyName &&
!Math.Round(Element.ZoomLevel * 100).Equals(Math.Round(MapView.ZoomLevel * 100)))
{
//MapView.SetZoomLevel(Element.ZoomLevel, true);
MapView.ZoomLevel = Element.ZoomLevel;
}
else if (e.PropertyName == FormsMap.PitchEnabledProperty.PropertyName && MapView.PitchEnabled != Element.PitchEnabled)
{
MapView.PitchEnabled = Element.PitchEnabled;
}
else if (e.PropertyName == FormsMap.RotateEnabledProperty.PropertyName && MapView.RotateEnabled != Element.RotateEnabled)
{
MapView.RotateEnabled = Element.RotateEnabled;
}
else if (e.PropertyName == FormsMap.AnnotationsProperty.PropertyName)
{
if (Element.Annotations != null)
{
AddAnnotations(Element.Annotations.ToArray());
var notifyCollection = Element.Annotations as INotifyCollectionChanged;
if (notifyCollection != null)
{
notifyCollection.CollectionChanged += OnAnnotationsCollectionChanged;
}
}
}
//else if (e.PropertyName == FormsMap.StyleUrlProperty.PropertyName
// && !string.IsNullOrEmpty(Element.StyleUrl)
// && (MapView.StyleURL == null
// || MapView.StyleURL.AbsoluteString != Element.StyleUrl))
//{
// MapView.StyleURL = new NSUrl(Element.StyleUrl);
//}
else if (e.PropertyName == FormsMap.MapStyleProperty.PropertyName &&
Element.MapStyle != null &&
!string.IsNullOrEmpty(Element.MapStyle.UrlString) &&
(MapView.StyleURL == null ||
MapView.StyleURL.AbsoluteString != Element.MapStyle.UrlString))
{
UpdateMapStyle();
}
else if (e.PropertyName == FormsMap.PitchProperty.PropertyName &&
!Element.Pitch.Equals(MapView.Camera.Pitch))
{
var currentCamera = MapView.Camera;
var newCamera = MGLMapCamera.CameraLookingAtCenterCoordinate(currentCamera.CenterCoordinate,
currentCamera.Altitude,
(nfloat)Element.Pitch,
currentCamera.Heading);
MapView.SetCamera(newCamera, true);
}
else if (e.PropertyName == FormsMap.RotatedDegreeProperty.PropertyName &&
!Element.RotatedDegree.Equals(MapView.Camera.Heading))
{
var currentCamera = MapView.Camera;
var newCamera = MGLMapCamera.CameraLookingAtCenterCoordinate(currentCamera.CenterCoordinate,
currentCamera.Altitude,
currentCamera.Pitch,
(nfloat)Element.RotatedDegree);
MapView.SetCamera(newCamera, true);
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (map == null || Element == null)
{
return;
}
if (e.PropertyName == MapView.VisibleBoundsProperty.PropertyName)
{
UpdateRegion();
}
else if (e.PropertyName == MapView.CenterProperty.PropertyName)
{
UpdateCenter();
}
else if (e.PropertyName == MapView.ZoomLevelProperty.PropertyName)
{
if (Element.ZoomLevel.HasValue == false)
{
return; // TODO Set to default value
}
var isSameLevel = Math.Round(Element.ZoomLevel.Value * 100).Equals(Math.Round(map.ZoomLevel * 100));
if (isSameLevel)
{
return;
}
map.ZoomLevel = Element.ZoomLevel.Value;
}
else if (e.PropertyName == MapView.PitchEnabledProperty.PropertyName)
{
if (map.PitchEnabled == Element.PitchEnabled)
{
return;
}
map.PitchEnabled = Element.PitchEnabled;
}
else if (e.PropertyName == MapView.ScrollEnabledProperty.PropertyName)
{
if (map.ScrollEnabled == Element.ScrollEnabled)
{
return;
}
map.ScrollEnabled = Element.ScrollEnabled;
}
else if (e.PropertyName == MapView.RotateEnabledProperty.PropertyName)
{
if (map.RotateEnabled == Element.RotateEnabled)
{
return;
}
map.RotateEnabled = Element.RotateEnabled;
}
else if (e.PropertyName == MapView.AnnotationsProperty.PropertyName)
{
if (Element.Annotations == null || Element.Annotations.Count() == 0)
{
return;
}
AddAnnotations(Element.Annotations.ToArray());
if (Element.Annotations is INotifyCollectionChanged observable)
{
observable.CollectionChanged -= OnAnnotationsCollectionChanged;
observable.CollectionChanged += OnAnnotationsCollectionChanged;
}
}
else if (e.PropertyName == MapView.MapStyleProperty.PropertyName)
{
var shouldNotUpdate = string.IsNullOrWhiteSpace(Element.MapStyle?.UrlString) ||
string.Equals(Element.MapStyle.UrlString, map.StyleURL?.AbsoluteString);
if (shouldNotUpdate)
{
return;
}
UpdateMapStyle();
}
else if (e.PropertyName == MapView.PitchProperty.PropertyName)
{
var shouldNotUpdate = Math.Abs(Element.Pitch - map.Camera.Pitch) < 0.05;
if (shouldNotUpdate)
{
return;
}
var currentCamera = map.Camera;
var newCamera = MGLMapCamera.CameraLookingAtCenterCoordinateAndAltitude(
currentCamera.CenterCoordinate,
currentCamera.Altitude,
(nfloat)Element.Pitch,
currentCamera.Heading);
map.SetCamera(newCamera, true);
}
else if (e.PropertyName == MapView.RotatedDegreeProperty.PropertyName)
{
var shouldNotUpdate = Math.Abs(Element.RotatedDegree - map.Camera.Heading) < 0.05;
if (shouldNotUpdate)
{
return;
}
var currentCamera = map.Camera;
var newCamera = MGLMapCamera.CameraLookingAtCenterCoordinateAndAltitude(
currentCamera.CenterCoordinate,
currentCamera.Altitude,
currentCamera.Pitch,
(nfloat)Element.RotatedDegree);
map.SetCamera(newCamera, true);
}
else if (e.PropertyName == MapView.ShowUserLocationProperty.PropertyName)
{
map.ShowsUserLocation = Element.ShowUserLocation;
}
}
