void LabelOnSizeChanged(object sender, SizeChangedEventArgs sizeChangedEventArgs)
{
var label = (FrameworkElement)sender;
AbstractAxesLabelCollection <TX, TXSize, TY, TYSize> factory = _labelAssociations[label];
factory.LabelResized(label, new AxesIntervals <TX, TXSize, TY, TYSize>(VisibleIntervalX, VisibleIntervalY), new Size(ActualWidth, ActualHeight));
}
void AddLabel(AbstractAxesLabelCollection <TX, TXSize, TY, TYSize> hostFactory, FrameworkElement label)
{
Func <FrameworkElement, Tuple <TX, TY> > getPosition = l => Tuple.Create((TX)l.GetValue(XProperty), (TY)l.GetValue(YProperty));
// Get positions already taken up by precending factories within the same override group.
HashSet <Tuple <TX, TY> > positioned = new HashSet <Tuple <TX, TY> >();
List <AbstractAxesLabelCollection <TX, TXSize, TY, TYSize> > precedingFactories = _labelFactoryGroups
.First(g => g.Key == hostFactory.OverrideGroup)
.Reverse() // Factories need to be updated in reverse order, since the later ones have precedence.
.TakeWhile(f => f != hostFactory)
.ToList();
if (hostFactory.OverrideGroup != null)
{
foreach (var factory in precedingFactories)
{
foreach (var taken in factory.Select(getPosition))
{
positioned.Add(taken);
}
}
}
// Only add children positioned on locations which have not been populated yet by preceding factories within the same override group.
Tuple <TX, TY> desiredPosition = getPosition(label);
if (!positioned.Contains(desiredPosition))
{
// Set Z index to position later defined factories more on top.
var index = LabelFactories.IndexOf(hostFactory);
label.SetValue(ZIndexProperty, index);
_labelAssociations[label] = hostFactory;
label.Loaded += LabelOnLoaded;
label.SizeChanged += LabelOnSizeChanged;
Children.Add(label);
}
}