private void DelCanvasLine()
{
Canvas canvas = this.Parent as Canvas;
if (canvas == null)
{
return;
}
ObservableCollection <UIElement> temp = new ObservableCollection <UIElement>();
foreach (var item in canvas.Children)
{
if (item is Polyline)
{
Polyline line = item as Polyline;
if (line.Tag == LineChartDataSelected)
{
temp.Add(line);
}
}
else if (item is KnotThumbControl)
{
KnotThumbControl knotThumb = item as KnotThumbControl;
if (knotThumb.LineChartDataSelected == LineChartDataSelected)
{
temp.Add(knotThumb);
}
}
}
foreach (var item in temp)
{
canvas.Children.Remove(item);
}
}
private void OnDragDelta(object sender, DragDeltaEventArgs e)
{
KnotThumbControl thumb = e.OriginalSource as KnotThumbControl;
if (thumb == null)
{
return;
}
double VerticalChange = e.VerticalChange;
Canvas canvas = thumb.Parent as Canvas;
if (canvas == null)
{
return;
}
Canvas.SetTop(thumb, Canvas.GetTop(thumb) + VerticalChange);
ConvertData(canvas, Canvas.GetTop(thumb) + VerticalChange);
if (DragDeltaEvent != null)
{
DelCanvasLine();
DragDeltaEvent(LineChartDataSelected, e);
}
e.Handled = true;
}
private void DrawPolylineKnotsChartData(Point[] points, LineService curve)
{
for (int i = 0; i < points.Length; i++)
{
KnotThumbControl knotThumbControl = new KnotThumbControl();
//knotThumbControl.DragDeltaEvent += KnotThumbControl_DragDeltaEvent;
knotThumbControl.DragComplatedEvent += KnotThumbControl_DragComplatedEvent;
knotThumbControl.KnotString = curve.LineLegendItem.TitleIcon;
knotThumbControl.KnotPath = Geometry.Parse(curve.LineLegendItem.TitleIconPath);
knotThumbControl.KnotColor = curve.LineLegendItem.Color;
knotThumbControl.LineChartDataSelected = curve;
knotThumbControl.SelectedPointX = points[i].X;
if (curve.LineLegendItem.TitleIcon == "•")
{
Canvas.SetLeft(knotThumbControl, points[i].X);
Canvas.SetTop(knotThumbControl, points[i].Y - 3);
}
else
{
Canvas.SetLeft(knotThumbControl, points[i].X - 2);
Canvas.SetTop(knotThumbControl, points[i].Y - 3);
}
this.BorderChart.Children.Add(knotThumbControl);
}
}
