protected UIElement RenderElement(List <UIElement> objects, IPlotElement pe, DataSeries ds, RenderContext rc, ShapeStyle shapeStyle, DataPoint dp)
{
DataTemplate pointLabelTemplate = ds.PointLabelTemplate;
PlotElement element = pe as PlotElement;
if (((ItemNames != null) && (dp.PointIndex < ItemNames.Length)) && (ItemNames[dp.PointIndex] != null))
{
dp.Name = ItemNames[dp.PointIndex].ToString();
}
FrameworkElement lbl = null;
Line line = null;
if (pointLabelTemplate != null)
{
lbl = pointLabelTemplate.LoadContent() as FrameworkElement;
lbl.DataContext = dp;
if (Canvas.GetZIndex(lbl) == 0)
{
Canvas.SetZIndex(lbl, 1);
}
if (pe != null)
{
pe.Label = lbl;
}
else
{
PlotElement.UpdateLabelPosition(element, lbl);
}
line = PlotElement.GetLabelLine(lbl);
}
if (pe == null)
{
return(null);
}
Size size = ds.GetSymbolSize(dp.PointIndex, _dataInfo, rc.Chart);
if (!size.IsEmpty && (element != null))
{
element.Size = size;
}
if (!pe.Render(rc))
{
return(null);
}
if (lbl != null)
{
objects.Add(lbl);
if (line != null)
{
lbl.Loaded += (sender, e) =>
{
Canvas parent = (Canvas)lbl.Parent;
if (parent != null)
{
parent.Children.Add(line);
}
};
}
}
if ((element.Center.X == 0.0) && (element.Center.Y == 0.0))
{
element.Center = rc.Current;
}
element.PlotRect = rc.Bounds;
PlotElement.UpdateLabelPosition(element, pe.Label as FrameworkElement);
if (element.DataContext == null)
{
element.DataContext = dp;
}
element.DataPoint = dp;
AttachTooltip(ds, element);
pe.SetShape(shapeStyle);
ds.Children.Add((UIElement)pe);
return((UIElement)pe);
}