private void RenderVisuals(VisualContext context)
{
foreach (Visual visual in visuals)
{
DataSeriesVisual sourceVisual = visual as DataSeriesVisual;
System.Diagnostics.Debug.Assert(sourceVisual != null, "sourceVisual != null");
sourceVisual.Render(context);
}
}
private object ItemHitTest(Point pt)
{
foreach (Visual visual in visuals)
{
DataSeriesVisual sourceVisual = visual as DataSeriesVisual;
System.Diagnostics.Debug.Assert(sourceVisual != null, "sourceVisual != null");
if (sourceVisual != null)
{
HitTestResult result = VisualTreeHelper.HitTest(sourceVisual, pt);
if (result != null && (result.VisualHit is DataSeriesVisual || result.VisualHit is DataPointVisual))
{
return(result.VisualHit);
}
}
}
return(null);
}
protected override Size MeasureOverride(Size availableSize)
{
Rect rect = Rect.Empty;
foreach (Visual visual in visuals)
{
DataSeriesVisual sourceVisual = visual as DataSeriesVisual;
System.Diagnostics.Debug.Assert(sourceVisual != null, "sourceVisual != null");
rect.Union(sourceVisual.ContentBounds);
rect.Union(sourceVisual.DescendantBounds);
}
if (rect.IsEmpty || double.IsInfinity(rect.Width) || double.IsInfinity(rect.Height))
{
return(new Size(0, 0));
}
return(new Size(rect.Width, rect.Height));
}