private void verify(double[] labels)
{
LegendX legend = (LegendX)TestLegendXScroller.Legend;
if (labels.Length != legend.LabelValues.Length)
{
System.Diagnostics.Debugger.Break();
throw new Exception("There should be " + labels.Length + " legends, but there were " + legend.LabelValues.Length + ".");
}
for (int legendValueIndex = 0; legendValueIndex < labels.Length; legendValueIndex++)
{
if (labels[legendValueIndex] != Math.Round(legend.LabelValues[legendValueIndex], 3))
{
System.Diagnostics.Debugger.Break();
throw new Exception("Legend[" + legendValueIndex + "] should be '" + labels[legendValueIndex] +
"' but was '" + Math.Round(legend.LabelValues[legendValueIndex], 3) + "'");
}
}
}
// -------
/// <summary>
/// Renders the vertical x-grid-line to the drawingContext, one line for each label in XLegend.
/// </summary>
protected override void OnCreateVisual(DrawingContext drawingContext, double width, double height, DrawingVisual _)
{
LegendX legendx = (LegendX)LegendScrollerX.Legend;
//grid-lines use only 1 dimension. Both for x and y grid-line,
double minDisplayValue = MinDisplayValues[0];
// Create a GuidelineSet to get the lines exactly on a pixel
GuidelineSet guidelines = new GuidelineSet();
double halfPenWidth = StrokePen.Thickness / 2;
foreach (double lableValue in legendx.LabelValues !)
{
double xPos = ScaleX * (lableValue - minDisplayValue);
guidelines.GuidelinesX.Add(xPos + halfPenWidth);
}
drawingContext.PushGuidelineSet(guidelines);
foreach (double lableValue in legendx.LabelValues)
{
double xPos = ScaleX * (lableValue - minDisplayValue);
drawingContext.DrawLine(StrokePen, new Point(xPos, 0), new Point(xPos, height));
}
drawingContext.Pop();
}
/// <summary>
/// Dummy constructor allowing public constructor to call TraceCreateStart() before construtor gets executed
/// </summary>
private LegendScrollerXTraced(DummyTraceClass dummyArgument, LegendX newLegendX) : base(newLegendX)
{
}
/// <summary>
/// Constructor supporting tracing of multiple XLegendScrollers with different names and special LegendX
/// </summary>
public LegendScrollerXTraced(string traceName, LegendX newLegendX) : this(TraceWPFEvents.TraceCreateStart(traceName), newLegendX)
{
TraceName = traceName;
TraceWPFEvents.TraceCreateEnd(traceName);
}
/// <summary>
/// Default Constructor with special LegendX
/// </summary>
public LegendScrollerXTraced(LegendX newLegendX) : this("XLegendScroller", newLegendX)
{
}
/// <summary>
/// Constructor using any x-axis legend
/// </summary>
public LegendScrollerX(LegendX legend) : base(legend)
{
}