/// <summary>
/// This method updates a single data point.
/// </summary>
/// <param name="dataPoint">The data point to update.</param>
protected override void UpdateDataPoint(DataPoint dataPoint)
{
StockBarDataPoint candlestickDataPoint = (StockBarDataPoint)dataPoint;
Double PlotAreaHeight = ActualDependentRangeAxis.GetPlotAreaCoordinate(ActualDependentRangeAxis.Range.Maximum);
Double dataPointX = ActualIndependentRangeAxis.GetPlotAreaCoordinate(ValueHelper.ToComparable(dataPoint.ActualIndependentValue));
Double highPointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(candlestickDataPoint.High);
Double lowPointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(candlestickDataPoint.Low);
Double openPointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(candlestickDataPoint.Open);
Double closePointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(candlestickDataPoint.Close);
if (!singleBlockWidth.HasValue)
{
Range <Double> doubleRange = ActualIndependentRangeAxis.Range.ToDoubleRange();
Double rangeLength = doubleRange.Maximum - doubleRange.Minimum;
if (rangeLength > 0.0)
{
singleBlockWidth = PlotArea.Width * 1.0 / rangeLength;
if (singleBlockWidth < 4.0)
{
singleBlockWidth = 4.0;
}
}
else
{
singleBlockWidth = 4.0;
}
}
if (ValueHelper.CanGraph(dataPointX))
{
candlestickDataPoint.Background = new SolidColorBrush(Colors.Transparent);
dataPoint.Height = Math.Abs(highPointY - lowPointY);
dataPoint.Width = singleBlockWidth.Value * 0.8;
if (dataPoint.Width > 16.0)
{
dataPoint.Width = 16.0;
}
candlestickDataPoint.UpdateBody(ActualDependentRangeAxis);
//if (dataPoint.ActualWidth == 0.0 || dataPoint.ActualHeight == 0.0)
{
dataPoint.UpdateLayout();
}
Canvas.SetLeft(dataPoint, Math.Round(dataPointX - (dataPoint.ActualWidth / 2)));
Canvas.SetTop(dataPoint, Math.Round(PlotAreaHeight - highPointY));
}
}
protected override void PrepareDataPoint(DataPoint dataPoint, object dataContext)
{
base.PrepareDataPoint(dataPoint, dataContext);
StockBarDataPoint candlestickDataPoint = (StockBarDataPoint)dataPoint;
candlestickDataPoint.SetBinding(StockBarDataPoint.OpenProperty, OpenValueBinding);
candlestickDataPoint.SetBinding(StockBarDataPoint.CloseProperty, CloseValueBinding);
candlestickDataPoint.SetBinding(StockBarDataPoint.HighProperty, HighValueBinding);
candlestickDataPoint.SetBinding(StockBarDataPoint.LowProperty, LowValueBinding);
}