public static void Show(this InfoWindow _infoWindow, MapPoint anchorPoint)
{
if (_infoWindow != null)
{
_infoWindow.Anchor = anchorPoint;
if (_infoWindow.Placement == InfoWindow.PlacementMode.Auto)
{
_infoWindow.IsOpen = true;
return;
}
Map map = _infoWindow.Map;
_infoWindow.IsOpen = false;
_infoWindow.UpdateLayout();
// Give the Layout time to size/arrange
_infoWindow.Dispatcher.BeginInvoke(() =>
{
//if (_infoWindow.Placement != InfoWindow.PlacementMode.Auto)
//{
if (double.IsNaN(_infoWindow.ActualHeight) || _infoWindow.ActualHeight == 0.0 ||
double.IsNaN(_infoWindow.ActualWidth) || _infoWindow.ActualWidth == 0.0)
{
return;
}
double windowHeight = _infoWindow.ActualHeight;
double windowWidth = _infoWindow.ActualWidth;
Point point = map.MapToScreen(_infoWindow.Anchor);
MapPoint mapTopLeft = map.ScreenToMap(new Point(point.X - windowWidth / 2.0, point.Y - windowHeight));
MapPoint mapBottomRight = map.ScreenToMap(new Point(point.X + windowWidth / 2.0, point.Y));
double mapWindowHeight = mapTopLeft.Y - mapBottomRight.Y;
double mapWindowWidth = mapBottomRight.X - mapTopLeft.X;
MapPoint newCenter = new MapPoint(map.Extent.XMin + ((map.Extent.XMax - map.Extent.XMin) / 2.0),
map.Extent.YMin + ((map.Extent.YMax - map.Extent.YMin) / 2.0));
bool panRequired = false;
double yDiff = (mapTopLeft.Y + mapWindowHeight * 0.3) - map.Extent.YMax;
if (yDiff > 0)
{
newCenter.Y += yDiff;
panRequired = true;
}
double xMinDiff = map.Extent.XMin - (mapTopLeft.X - mapWindowWidth * 0.2);
if (xMinDiff > 0)
{
newCenter.X -= xMinDiff;
panRequired = true;
}
else
{
double xMaxDiff = (mapBottomRight.X + mapWindowWidth * 0.2) - map.Extent.XMax;
if (xMaxDiff > 0)
{
newCenter.X += xMaxDiff;
panRequired = true;
}
}
if (panRequired)
{
map.PanTo(newCenter);
}
//}
_infoWindow.IsOpen = true;
});
}
}