public ISeriesControl GetPreviousSeriesHost(ISeriesControl current)
{
int index = GetSeriesIndex(current);
if (index <= 0)
{
return(null);
}
return(GetSeriesHost(index - 1));
}
private int GetSeriesIndex(ISeriesControl seriesControl)
{
var item = seriesControl.DataContext;
if (this.itemIndexMap.TryGetValue(item, out int index))
{
return(index);
}
return(-1);
}
public PointNS[] GetPreviousSeriesCoordinates(bool isAreaSeries)
{
var coordinates = GetCoordinates();
PointNS[] previous = null;
switch (this.Owner.StackMode)
{
case StackMode.None:
if (isAreaSeries)
{
previous = new[] { new PointNS(coordinates.First().X, 0), new PointNS(coordinates.Last().X, 0) };
}
break;
case StackMode.Stacked:
case StackMode.Stacked100:
ISeriesControl previousSeriesControl = GetPreviousSeriesHost();
if (previousSeriesControl == null)
{
if (isAreaSeries)
{
previous = new[] { new PointNS(coordinates.First().X, 0), new PointNS(coordinates.Last().X, 0) };
}
}
else
{
previous = previousSeriesControl.GetCoordinates();
if (previous.Length != coordinates.Length)
{
throw new MvvmChartException($"previous.Length({previous.Length}) != coordinates.Length({coordinates.Length})");
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
return(previous);
}
private void Sr_YValueRangeChanged(ISeriesControl sr, Range obj)
{
UpdateGlobalValueRange();
}
