private LegendItem RaiseResolveLegendItem(LegendItem uncustomizedLegendItem)
{
if (ResolveLegendItem != null)
{
ResolveLegendItemEventArgs e = new ResolveLegendItemEventArgs(uncustomizedLegendItem);
ResolveLegendItem(this, e);
return(e.LegendItem);
}
else
{
return(uncustomizedLegendItem);
}
}
private void graph_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "Description")
{
ViewportElement2D graph = (ViewportElement2D)sender;
LegendItem oldLegendItem = cachedLegendItems[graph];
int index = stackPanel.Children.IndexOf(oldLegendItem);
stackPanel.Children.RemoveAt(index);
LegendItem newLegendItem = graph.Description.LegendItem;
cachedLegendItems[graph] = newLegendItem;
stackPanel.Children.Insert(index, newLegendItem);
}
}
public void PopulateLegend()
{
stackPanel.Children.Clear();
if (plotter == null)
{
return;
}
cachedLegendItems.Clear();
foreach (var graph in plotter.Children.OfType <ViewportElement2D>())
{
if (GetVisibleInLegend(graph))
{
LegendItem legendItem = graph.Description.LegendItem;
cachedLegendItems.Add(graph, legendItem);
AddLegendItem(legendItem);
}
}
UpdateVisibility();
}
private LegendItem CreateLegendItem()
{
LegendItem item = CreateLegendItemCore();
return(RaiseResolveLegendItem(item));
}
public ResolveLegendItemEventArgs(LegendItem legendItem)
{
LegendItem = legendItem;
}
/// <summary>
/// Removes the legend item.
/// </summary>
/// <param name="legendItem">The legend item.</param>
public void RemoveLegendItem(LegendItem legendItem)
{
stackPanel.Children.Remove(legendItem);
UpdateVisibility();
}
/// <summary>
/// Adds new legend item.
/// </summary>
/// <param name="legendItem">The legend item.</param>
public void AddLegendItem(LegendItem legendItem)
{
stackPanel.Children.Add(legendItem);
UpdateVisibility();
}