protected override Range <IComparable> IRangeProviderGetRange(IRangeConsumer rangeConsumer)
{
if (rangeConsumer == ActualDependentAxis)
{
var dependentValuesByIndependentValue = IndependentValueDependentValues.Select(e => e.ToArray()).ToArray();
var mostNegative = dependentValuesByIndependentValue
.Select(g => g.Where(v => v < 0)
.Sum())
.Where(v => v < 0)
.ToArray();
var leastNegative = dependentValuesByIndependentValue
.Select(g => g.Where(v => v <= 0)
.DefaultIfEmpty(1.0)
.First())
.Where(v => v <= 0)
.ToArray();
var mostPositive = dependentValuesByIndependentValue
.Select(g => g.Where(v => 0 < v)
.Sum())
.Where(v => 0 < v)
.ToArray();
var leastPositive = dependentValuesByIndependentValue
.Select(g => g.Where(v => 0 <= v)
.DefaultIfEmpty(-1.0)
.First())
.Where(v => 0 <= v)
.ToArray();
// Compute minimum
double minimum = 0;
if (mostNegative.Any())
{
minimum = mostNegative.Min();
}
else if (leastPositive.Any())
{
minimum = leastPositive.Min();
}
// Compute maximum
double maximum = 0;
if (mostPositive.Any())
{
maximum = mostPositive.Max();
}
else if (leastNegative.Any())
{
maximum = leastNegative.Max();
}
if (IsStacked100)
{
minimum = Math.Min(minimum, 0);
maximum = Math.Max(maximum, 0);
}
return(new Range <IComparable>(minimum, maximum));
}
else if (rangeConsumer == ActualIndependentAxis)
{
// Using a non-ICategoryAxis for the independent axis
// Need to specifically adjust for slot size of bars/columns so they don't overlap
// Note: Calculation for slotSize is not perfect, but it's quick, close, and errs on the safe side
Range <IComparable> range = base.IRangeProviderGetRange(rangeConsumer);
int count = Math.Max(IndependentValueGroups.Count(), 1);
if (ActualIndependentAxis.CanPlot(0.0))
{
double minimum = ValueHelper.ToDouble(range.Minimum);
double maximum = ValueHelper.ToDouble(range.Maximum);
double slotSize = (maximum - minimum) / count;
return(new Range <IComparable>(minimum - slotSize, maximum + slotSize));
}
else
{
DateTime minimum = ValueHelper.ToDateTime(range.Minimum);
DateTime maximum = ValueHelper.ToDateTime(range.Maximum);
TimeSpan slotSize = TimeSpan.FromTicks((maximum - minimum).Ticks / count);
return(new Range <IComparable>(minimum - slotSize, maximum + slotSize));
}
}
else
{
return(base.IRangeProviderGetRange(rangeConsumer));
}
}
protected override void UpdateDataItemPlacement(IEnumerable <DefinitionSeries.DataItem> dataItems)
{
IAxis actualIndependentAxis = ActualIndependentAxis;
if ((null != ActualDependentAxis) && (null != actualIndependentAxis))
{
double plotAreaMaximumDependentCoordinate = ActualDependentAxis.GetPlotAreaCoordinate(ActualDependentRangeAxis.Range.Maximum).Value;
double zeroCoordinate = ActualDependentAxis.GetPlotAreaCoordinate(ActualDependentRangeAxis.Origin ?? 0.0).Value;
ICategoryAxis actualIndependentCategoryAxis = actualIndependentAxis as ICategoryAxis;
double nonCategoryAxisRangeMargin = (null != actualIndependentCategoryAxis) ? 0 : GetMarginForNonCategoryAxis(actualIndependentAxis);
foreach (IndependentValueGroup group in IndependentValueGroups)
{
Range <UnitValue> categoryRange = new Range <UnitValue>();
if (null != actualIndependentCategoryAxis)
{
categoryRange = actualIndependentCategoryAxis.GetPlotAreaCoordinateRange(group.IndependentValue);
}
else
{
UnitValue independentValueCoordinate = actualIndependentAxis.GetPlotAreaCoordinate(group.IndependentValue);
if (ValueHelper.CanGraph(independentValueCoordinate.Value))
{
categoryRange = new Range <UnitValue>(new UnitValue(independentValueCoordinate.Value - nonCategoryAxisRangeMargin, independentValueCoordinate.Unit), new UnitValue(independentValueCoordinate.Value + nonCategoryAxisRangeMargin, independentValueCoordinate.Unit));
}
}
if (categoryRange.HasData)
{
double categoryMinimumCoordinate = categoryRange.Minimum.Value;
double categoryMaximumCoordinate = categoryRange.Maximum.Value;
double padding = 0.1 * (categoryMaximumCoordinate - categoryMinimumCoordinate);
categoryMinimumCoordinate += padding;
categoryMaximumCoordinate -= padding;
double sum = IsStacked100 ?
group.DataItems.Sum(di => Math.Abs(ValueHelper.ToDouble(di.DataPoint.ActualDependentValue))) :
1;
if (0 == sum)
{
sum = 1;
}
double ceiling = 0;
double floor = 0;
foreach (DataItem dataItem in group.DataItems)
{
DataPoint dataPoint = dataItem.DataPoint;
double value = IsStacked100 ? (ValueHelper.ToDouble(dataPoint.ActualDependentValue) * (100 / sum)) : ValueHelper.ToDouble(dataPoint.ActualDependentValue);
if (ValueHelper.CanGraph(value))
{
double valueCoordinate = ActualDependentAxis.GetPlotAreaCoordinate(value).Value;
double fillerCoordinate = (0 <= value) ? ceiling : floor;
double topCoordinate = 0, leftCoordinate = 0, height = 0, width = 0, deltaCoordinate = 0;
if (AxisOrientation.Y == ActualDependentAxis.Orientation)
{
topCoordinate = plotAreaMaximumDependentCoordinate - Math.Max(valueCoordinate + fillerCoordinate, zeroCoordinate + fillerCoordinate);
double bottomCoordinate = plotAreaMaximumDependentCoordinate - Math.Min(valueCoordinate + fillerCoordinate, zeroCoordinate + fillerCoordinate);
deltaCoordinate = bottomCoordinate - topCoordinate;
height = (0 < deltaCoordinate) ? deltaCoordinate + 1 : 0;
leftCoordinate = categoryMinimumCoordinate;
width = categoryMaximumCoordinate - categoryMinimumCoordinate + 1;
}
else
{
leftCoordinate = Math.Min(valueCoordinate + fillerCoordinate, zeroCoordinate + fillerCoordinate);
double rightCoordinate = Math.Max(valueCoordinate + fillerCoordinate, zeroCoordinate + fillerCoordinate);
deltaCoordinate = rightCoordinate - leftCoordinate;
width = (0 < deltaCoordinate) ? deltaCoordinate + 1 : 0;
topCoordinate = categoryMinimumCoordinate;
height = categoryMaximumCoordinate - categoryMinimumCoordinate + 1;
}
double roundedTopCoordinate = Math.Round(topCoordinate);
Canvas.SetTop(dataItem.Container, roundedTopCoordinate);
dataPoint.Height = Math.Round(topCoordinate + height - roundedTopCoordinate);
double roundedLeftCoordinate = Math.Round(leftCoordinate);
Canvas.SetLeft(dataItem.Container, roundedLeftCoordinate);
dataPoint.Width = Math.Round(leftCoordinate + width - roundedLeftCoordinate);
dataPoint.Visibility = Visibility.Visible;
if (0 <= value)
{
ceiling += deltaCoordinate;
}
else
{
floor -= deltaCoordinate;
}
}
else
{
dataPoint.Visibility = Visibility.Collapsed;
}
}
}
else
{
foreach (DataPoint dataPoint in group.DataItems.Select(di => di.DataPoint))
{
dataPoint.Visibility = Visibility.Collapsed;
}
}
}
}
}
