internal override FrameworkElement GetLegendSymbol()
{
Grid grid = new Grid();
grid.Width = 20.0;
grid.Height = 12.0;
PointCollection pointCollection = new PointCollection();
pointCollection.Add(new Point(0.0, 6.0));
pointCollection.Add(new Point(20.0, 6.0));
Collection <IAppearanceProvider> collection = new Collection <IAppearanceProvider>();
LineDataPoint lineDataPoint1 = Enumerable.FirstOrDefault <LineDataPoint>(Enumerable.Where <LineDataPoint>(Enumerable.OfType <LineDataPoint>((IEnumerable)this.Series.DataPoints), (Func <LineDataPoint, bool>)(p =>
{
if (!p.ActualIsEmpty)
{
return(p.IsVisible);
}
return(false);
})));
LineDataPoint lineDataPoint2 = this.Series.CreateDataPoint() as LineDataPoint;
if (lineDataPoint1 != null)
{
lineDataPoint2.Stroke = lineDataPoint1.Stroke;
lineDataPoint2.StrokeThickness = lineDataPoint1.StrokeThickness;
lineDataPoint2.StrokeDashType = lineDataPoint1.StrokeDashType;
}
else if (this.Series.ItemsBinder != null)
{
this.Series.ItemsBinder.Bind((DataPoint)lineDataPoint2, this.Series.DataContext);
}
lineDataPoint2.Series = (Series)this.Series;
collection.Add((IAppearanceProvider)lineDataPoint2);
collection.Add((IAppearanceProvider)lineDataPoint2);
lineDataPoint2.ActualEffect = lineDataPoint2.Effect;
lineDataPoint2.ActualOpacity = lineDataPoint2.Opacity;
PolylineControl polylineControl = new PolylineControl();
polylineControl.Points = pointCollection;
polylineControl.Appearances = collection;
polylineControl.Update();
polylineControl.Width = 20.0;
polylineControl.Height = 12.0;
grid.Children.Add((UIElement)polylineControl);
DataPoint dataPoint = (DataPoint)(lineDataPoint1 ?? lineDataPoint2);
if (!this.IsSimplifiedRenderingModeEnabled && dataPoint.MarkerType != MarkerType.None)
{
FrameworkElement view = (FrameworkElement) new MarkerControl();
this.MarkerPresenter.BindViewToDataPoint(dataPoint, view, (string)null);
view.Opacity = lineDataPoint2.Opacity;
view.Effect = lineDataPoint2.Effect;
grid.Children.Add((UIElement)view);
}
lineDataPoint2.Series = (Series)null;
return((FrameworkElement)grid);
}
public DataPoint GetDataPointFromMouseEvent(MouseButtonEventArgs e)
{
Polyline polyline1 = e.OriginalSource as Polyline;
if (polyline1 != null)
{
PolylineControl polyline2 = polyline1.Parent as PolylineControl;
if (polyline2 != null && polyline2.Parent is UIElement)
{
return((DataPoint)LineSeriesPresenter.FindDataPoint(polyline2, e.GetPosition((IInputElement)(polyline2.Parent as UIElement))));
}
}
return(this.GetDataPointFromVisualElement(e.OriginalSource as DependencyObject));
}
internal static XYDataPoint FindDataPoint(PolylineControl polyline, Point position)
{
XYDataPoint xyDataPoint1 = (XYDataPoint)null;
foreach (IAppearanceProvider appearanceProvider in polyline.Appearances)
{
XYDataPoint xyDataPoint2 = appearanceProvider as XYDataPoint;
if (xyDataPoint2 != null && xyDataPoint2.View != null && !xyDataPoint2.ActualIsEmpty)
{
if (xyDataPoint1 == null)
{
xyDataPoint1 = xyDataPoint2;
}
else if (LineSeriesPresenter.GetDistance(position, xyDataPoint2.View.AnchorPoint) < LineSeriesPresenter.GetDistance(position, xyDataPoint1.View.AnchorPoint))
{
xyDataPoint1 = xyDataPoint2;
}
}
}
return(xyDataPoint1);
}
