public void displayCallout(IMapAnnotation annotation, IAnnotationMarker annotationElement)
{
// Hide any existing callout
hideCallout();
// There is only ever one callout
MapCallout callout = new MapCallout();
calloutLayer.Children.Add(callout);
// Hook up tap event
callout.Callout_Tapped += callout_Callout_Tapped;
// Assign this annotation as the data context of the callout - so it can get Title, Subtitle, etc
callout.DataContext = annotation;
// Position
MapLayer.SetPosition(callout, new Location(annotation.Latitude, annotation.Longitude));
// Callout anchor point also depends upon the anchor of the pushpin
MapLayer.SetPositionAnchor(callout, new Windows.Foundation.Point(
CALLOUT_ANCHOR_X + annotationElement.PositionAnchor.X,
CALLOUT_ANCHOR_Y + annotationElement.PositionAnchor.Y));
// Appear
callout.animateOnscreen();
Point offsetRequired;
if (!isCalloutInView(callout, out offsetRequired))
map.scrollBy(offsetRequired);
// Store for later
lastCallout = callout;
}
// This method is where we tell the map what XAML UIElement to display for a given annotation
public IAnnotationMarker MarkerForAnnotation(IMapAnnotation annotation)
{
if (annotation is Restaurant)
{
// Use a square map marker for restaurants
SquareMapMarker squareMarker = new SquareMapMarker();
// Number each map marker
squareMarker.MarkerText = restaurants.IndexOf((Restaurant)annotation).ToString();
return squareMarker;
}
else if (annotation is Museum)
{
// Use a square map marker for restaurants
RoundMapMarker roundMarker = new RoundMapMarker();
// Number each map marker
roundMarker.MarkerText = museums.IndexOf((Museum)annotation).ToString();
return roundMarker;
}
else
return null;
}
/// <summary>
/// Determines whether the specified <see cref="IMapAnnotation"/> is equal to the current <see cref="T:fivenine.UnifiedMaps.CircleOverlay"/>.
/// </summary>
/// <param name="other">The <see cref="IMapAnnotation"/> to compare with the current <see cref="T:fivenine.UnifiedMaps.CircleOverlay"/>.</param>
/// <returns><c>true</c> if the specified <see cref="IMapAnnotation"/> is equal to the current
/// <see cref="T:fivenine.UnifiedMaps.CircleOverlay"/>; otherwise, <c>false</c>.</returns>
public bool Equals(IMapAnnotation other)
{
var that = other as ICircleOverlay;
if (that == null)
{
return false;
}
return Location == that.Location
&& Color == that.Color
&& Math.Abs(Radius - that.Radius) < float.Epsilon;
}
/// <summary>
/// Send the pin clicked event.
/// </summary>
internal void SendPinClicked(IMapAnnotation pin)
{
PinClicked?.Invoke(this, new MapEventArgs <IMapAnnotation>(pin));
}
public void MapAnnotationClicked(IMapAnnotation annotation)
{
displayCalloutForAnnotation(annotation);
}
public IAnnotationMarker MarkerForAnnotation(IMapAnnotation annotation)
{
// Calls back to our own delegate if it exists)
if (markerSource != null)
return markerSource.MarkerForAnnotation(annotation);
else
return new DefaultMapMarker();
}
void displayCalloutForAnnotation(IMapAnnotation annotation)
{
IAnnotationMarker annotationElement = (IAnnotationMarker)annotationManager.UIElementForAnnotation(annotation);
calloutManager.displayCallout(annotation, annotationElement);
}
/// <summary>
/// Determines whether the specified <see cref="IMapAnnotation"/> is equal to the current <see cref="T:fivenine.UnifiedMaps.MapPin"/>.
/// </summary>
/// <param name="other">The <see cref="IMapAnnotation"/> to compare with the current <see cref="T:fivenine.UnifiedMaps.MapPin"/>.</param>
/// <returns><c>true</c> if the specified <see cref="IMapAnnotation"/> is equal to the current
/// <see cref="T:fivenine.UnifiedMaps.MapPin"/>; otherwise, <c>false</c>.</returns>
public bool Equals(IMapAnnotation other)
{
var that = other as IMapPin;
if (that == null)
{
return false;
}
return Location == that.Location &&
string.Compare(Title, that.Title, StringComparison.OrdinalIgnoreCase) == 0 &&
string.Compare(Snippet, that.Snippet, StringComparison.OrdinalIgnoreCase) == 0 &&
Color == that.Color;
}
public CalloutButtonTappedEventArgs(int buttonIndex, IMapAnnotation annotation)
{
this.ButtonIndex = buttonIndex;
this.Annotation = annotation;
}
public UIElement UIElementForAnnotation(IMapAnnotation annotation)
{
return annotationElements[annotation];
}
public void MapAnnotationClicked(IMapAnnotation annotation)
{
if (this.Annotation_Tapped != null) {
this.Annotation_Tapped(this, new AnnotationTappedEventArgs(annotation));
}
displayCalloutForAnnotation(annotation);
}
public AnnotationTappedEventArgs( IMapAnnotation annotation)
{
this.Annotation = annotation;
}
public bool ShowCalloutForAnnotation(IMapAnnotation annotation)
{
// Calls back to our own delegate if it exists)
if (markerSource != null)
return markerSource.ShowCalloutForAnnotation(annotation);
else
return true;
}
