/// <summary>
/// Creates the LegendItem Control if conditions are right.
/// </summary>
private void CreateLegendItemDataPoint()
{
DataPoint dataPoint = CreateDataPoint();
if (null != PlotArea)
{
// Bounce into the visual tree to get default Style applied
PlotArea.Children.Add(dataPoint);
PlotArea.Children.Remove(dataPoint);
}
dataPoint.SetBinding(DataPoint.StyleProperty, new Binding(ActualDataPointStyleName)
{
Source = this
});
// Start DataContext null to avoid Binding warnings in the output window
LegendItem.DataContext = null;
#if !SILVERLIGHT
if (null == LegendItem.Parent)
{
#endif
LegendItem.Loaded += delegate
{
// Wait for Loaded to set the DataPoint
LegendItem.DataContext = dataPoint;
}
;
#if !SILVERLIGHT
}
else
{
LegendItem.DataContext = dataPoint;
}
#endif
}
/// <summary>
/// Sets the style of the data point to the single style used for all
/// data points.
/// </summary>
/// <param name="dataPoint">The data point to apply the style to.
/// </param>
/// <param name="dataContext">The object associated with the data point.
/// </param>
protected override void PrepareDataPoint(DataPoint dataPoint, object dataContext)
{
dataPoint.SetBinding(DataPoint.StyleProperty, new Binding(ActualDataPointStyleName)
{
Source = this
});
base.PrepareDataPoint(dataPoint, dataContext);
}
/// <summary>
/// Prepares a data point by extracting binding it to a data context
/// object.
/// </summary>
/// <param name="dataPoint">A data point.</param>
/// <param name="dataContext">A data context object.</param>
protected virtual void PrepareDataPoint(DataPoint dataPoint, object dataContext)
{
// Create a Control with DataContext set to the data source
dataPoint.DataContext = dataContext;
// Set bindings for IndependentValue/DependentValue
if (IndependentValueBinding != null)
{
dataPoint.SetBinding(DataPoint.IndependentValueProperty, IndependentValueBinding);
}
if (DependentValueBinding == null)
{
dataPoint.SetBinding(DataPoint.DependentValueProperty, new Binding());
}
else
{
dataPoint.SetBinding(DataPoint.DependentValueProperty, DependentValueBinding);
}
}
/// <summary>
/// Creates a legend item from a data point.
/// </summary>
/// <param name="dataPoint">The data point to use to create the legend item.</param>
/// <param name="index">The 1-based index of the Control.</param>
/// <returns>The series host legend item.</returns>
protected virtual LegendItem CreatePieLegendItem(DataPoint dataPoint, int index)
{
LegendItem legendItem = CreateLegendItem(this);
// Set the Content of the LegendItem
legendItem.Content = dataPoint.IndependentValue ?? index;
// Create a representative DataPoint for access to styled properties
DataPoint legendDataPoint = CreateDataPoint();
legendDataPoint.DataContext = dataPoint.DataContext;
if (null != PlotArea)
{
// Bounce into the visual tree to get default Style applied
PlotArea.Children.Add(legendDataPoint);
PlotArea.Children.Remove(legendDataPoint);
}
legendDataPoint.SetBinding(DataPoint.StyleProperty, new Binding(PieDataPoint.ActualDataPointStyleName)
{
Source = dataPoint
});
legendItem.DataContext = legendDataPoint;
return(legendItem);
}
/// <summary>
/// Prepares a data point by extracting binding it to a data context
/// object.
/// </summary>
/// <param name="dataPoint">A data point.</param>
/// <param name="dataContext">A data context object.</param>
protected virtual void PrepareDataPoint(DataPoint dataPoint, object dataContext)
{
// Create a Control with DataContext set to the data source
dataPoint.DataContext = dataContext;
// Set bindings for IndependentValue/DependentValue
if (IndependentValueBinding != null)
{
dataPoint.SetBinding(DataPoint.IndependentValueProperty, IndependentValueBinding);
}
if (DependentValueBinding == null)
{
dataPoint.SetBinding(DataPoint.DependentValueProperty, new Binding());
}
else
{
dataPoint.SetBinding(DataPoint.DependentValueProperty, DependentValueBinding);
}
}
/// <summary>
/// Sets the style of the data point to the single style used for all
/// data points.
/// </summary>
/// <param name="dataPoint">The data point to apply the style to.
/// </param>
/// <param name="dataContext">The object associated with the data point.
/// </param>
protected override void PrepareDataPoint(DataPoint dataPoint, object dataContext)
{
dataPoint.SetBinding(DataPoint.StyleProperty, new Binding(ActualDataPointStyleName) { Source = this });
base.PrepareDataPoint(dataPoint, dataContext);
}