private void InitGraph()
{
// Set horizontal and vertical clip factor to different values.
ViewportRestrictionCallback enlargeCallback = (proposedBound) =>
{
if (proposedBound.IsEmpty)
{
return(proposedBound);
}
return(CoordinateUtilities.RectZoom(proposedBound, proposedBound.GetCenter(), 1, 1.05));
};
BpsChart.ViewportClipToBoundsEnlargeFactor = 1;
PpsChart.ViewportClipToBoundsEnlargeFactor = 1;
BpsChart.Viewport.FitToViewRestrictions
.Add(new InjectionDelegateRestriction(BpsChart.Viewport, enlargeCallback));
PpsChart.Viewport.FitToViewRestrictions
.Add(new InjectionDelegateRestriction(PpsChart.Viewport, enlargeCallback));
// Disable zoom and pan
BpsChart.Children.Remove(BpsChart.MouseNavigation);
BpsChart.Children.Remove(BpsChart.KeyboardNavigation);
BpsChart.Children.Remove(BpsChart.HorizontalAxisNavigation);
BpsChart.Children.Remove(BpsChart.VerticalAxisNavigation);
BpsChart.DefaultContextMenu.RemoveFromPlotter();
PpsChart.Children.Remove(PpsChart.MouseNavigation);
PpsChart.Children.Remove(PpsChart.KeyboardNavigation);
PpsChart.Children.Remove(PpsChart.HorizontalAxisNavigation);
PpsChart.Children.Remove(PpsChart.VerticalAxisNavigation);
PpsChart.DefaultContextMenu.RemoveFromPlotter();
ResetLineChart(BpsChart);
ResetLineChart(PpsChart);
}
public override void Render(DrawingContext dc, Point screenPoint)
{
FormattedText textToDraw = new FormattedText(Text, Thread.CurrentThread.CurrentCulture,
FlowDirection.LeftToRight, new Typeface("Arial"), 12, Brushes.Black);
double width = textToDraw.Width;
double height = textToDraw.Height;
const double verticalShift = -20; // px
Rect bounds = RectExtensions.FromCenterSize(new Point(screenPoint.X, screenPoint.Y + verticalShift - height / 2),
new Size(width, height));
Point loc = bounds.Location;
bounds = CoordinateUtilities.RectZoom(bounds, 1.05, 1.15);
dc.DrawLine(new Pen(Brushes.Black, 1), Point.Add(screenPoint, new Vector(0, verticalShift)), screenPoint);
dc.DrawRectangle(Brushes.White, new Pen(Brushes.Black, 1), bounds);
dc.DrawText(textToDraw, loc);
}
