private static ChartHitTestResult HandleChartHit(Chart chart, UIElement element, Point point)
{
var xAxis = chart.XAxis;
var yAxis = chart.YAxis;
object dataContext;
if (element is FrameworkElement && GetIsDataPoint(element))
{
dataContext = ((FrameworkElement)element).DataContext;
}
else
{
dataContext = element.GetVisualAncestors()
.OfType<FrameworkElement>()
.Where(GetIsDataPoint)
.Select(e => e.DataContext)
.FirstOrDefault();
}
return new ChartHitTestResult
{
ChartPanel = GetChartPanel(chart),
Chart = chart,
Visual = element,
Data = dataContext,
Position = point,
X = (xAxis != null) ? xAxis.GetValue(point) : Double.NaN,
Y = (yAxis != null) ? yAxis.GetValue(point) : Double.NaN,
};
}
