/// <summary>
/// Returns the category at a given coordinate.
/// </summary>
/// <param name="position">The plot area position.</param>
/// <returns>The category at the given plot area position.</returns>
public object GetCategoryAtPosition(UnitValue position)
{
if (this.ActualLength == 0.0 || this.Categories.Count == 0)
{
return null;
}
if (position.Unit == Unit.Pixels)
{
double coordinate = position.Value;
int index = (int)Math.Floor(coordinate / (this.ActualLength / this.Categories.Count));
if (index >= 0 && index < this.Categories.Count)
{
if (Orientation == AxisOrientation.X)
{
return this.Categories[index];
}
else
{
return this.Categories[(this.Categories.Count - 1) - index];
}
}
}
else
{
throw new NotImplementedException();
}
return null;
}
/// <summary>
/// Returns the value range given a plot area coordinate.
/// </summary>
/// <param name="value">The position.</param>
/// <returns>A range of values at that plot area coordinate.</returns>
protected override IComparable GetValueAtPosition(UnitValue value)
{
if (ActualRange.HasData && ActualLength != 0.0)
{
long coordinate = (long)value.Value;
if (value.Unit == Unit.Pixels)
{
long minimumAsDouble = ActualDateTimeRange.Minimum.Ticks;
long rangelength = ActualDateTimeRange.Maximum.Ticks - minimumAsDouble;
long longoutput = (long)(coordinate * (rangelength / ActualLength) + minimumAsDouble);
DateTime output = new DateTime(longoutput);
return output;
}
else
{
throw new NotImplementedException();
}
}
return null;
}
/// <summary>
/// Returns the value range given a plot area coordinate.
/// </summary>
/// <param name="value">The plot area position.</param>
/// <returns>The value at that plot area coordinate.</returns>
protected override IComparable GetValueAtPosition(UnitValue value)
{
if (ActualRange.HasData && ActualLength != 0.0)
{
if (value.Unit == Unit.Pixels)
{
double coordinate = value.Value;
double rangelength = ActualDoubleRange.Maximum - ActualDoubleRange.Minimum;
double output = ((coordinate * (rangelength / ActualLength)) + ActualDoubleRange.Minimum);
return output;
}
else
{
throw new NotImplementedException();
}
}
return null;
}
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;
}
}
}
}
}
/// <summary>
/// Returns the value range given a plot area coordinate.
/// </summary>
/// <param name="value">The plot area coordinate.</param>
/// <returns>A range of values at that plot area coordinate.</returns>
IComparable IRangeAxis.GetValueAtPosition(UnitValue value)
{
return GetValueAtPosition(value);
}
/// <summary> /// Returns the value range given a plot area coordinate. /// </summary> /// <param name="value">The plot area coordinate.</param> /// <returns>A range of values at that plot area coordinate.</returns> protected abstract IComparable GetValueAtPosition(UnitValue value);
/// <summary>
/// Returns the value range given a plot area coordinate.
/// </summary>
/// <param name="value">The plot area coordinate.</param>
/// <returns>A range of values at that plot area coordinate.</returns>
IComparable IRangeAxis.GetValueAtPosition(UnitValue value)
{
return(GetValueAtPosition(value));
}
/// <summary> /// Returns the value range given a plot area coordinate. /// </summary> /// <param name="value">The plot area coordinate.</param> /// <returns>A range of values at that plot area coordinate.</returns> protected abstract IComparable GetValueAtPosition(UnitValue value);
