public async Task TrySetViewAsync(Geopoint point, double?zoomLevel, MapAnimationKind animation)
{
if (zoomLevel <= DigiTransitMapControl.ZoomLevel)
{
zoomLevel = DigiTransitMapControl.ZoomLevel;
}
await DigiTransitMapControl.TrySetViewAsync(point, zoomLevel, null, null, animation);
}
public GeoboundingBox GetMapViewBoundingBox()
{
//Only available in AU and later
if (ApiInformation.IsMethodPresent("Windows.UI.Xaml.Controls.Maps.MapControl", "GetVisibleRegion"))
{
Geopath geopath = DigiTransitMapControl.GetVisibleRegion(MapVisibleRegionKind.Full);
if (geopath == null)
{
return(null);
}
return(GetCoordinateGeoboundingBox(geopath.Positions));
}
else //pre-AU
{
return(GetBounds());
}
}
public async Task TrySetViewBoundsAsync(GeoboundingBox bounds, Thickness?margin, MapAnimationKind animation, bool retryOnFailure = false)
{
if (DigiTransitMapControl == null)
{
return;
}
// We're checking for the MapStyle type as a proxy for "are we running on Creators or higher?".
// We don't need to run the following code if we are.
if (margin != null &&
!ApiInformation.IsTypePresent("Windows.UI.Xaml.Controls.Maps.MapStyle") &&
DeviceTypeHelper.GetDeviceFormFactorType() != DeviceFormFactorType.Phone)
{
//Margins are a little smaller on desktop for some reason. investigate this a little further, may just be a DPI thing?
const int desktopPlusCoeff = 40;
margin = new Thickness(margin.Value.Left + desktopPlusCoeff, margin.Value.Top + desktopPlusCoeff,
margin.Value.Right + desktopPlusCoeff, margin.Value.Bottom + desktopPlusCoeff);
}
//If map movement fails, keep retrying until we get it right
bool moved = false;
do
{
moved = await DigiTransitMapControl.TrySetViewBoundsAsync(bounds, margin, animation);
if (moved)
{
break;
}
else
{
await Task.Delay(2000); //looong delay to acommodate slow mobile rendering
}
} while (!moved && retryOnFailure);
}
