//DependencyProperty.Register("DisplayMode", typeof(DisplayMode), typeof(PieChartLabel), new FrameworkPropertyMetadata(DisplayMode.ArcMidpoint, FrameworkPropertyMetadataOptions.AffectsArrange));
private static void DisplayModePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
PieChartLabel label = obj as PieChartLabel;
if (label != null)
{
label.InvalidateArrange();
}
}
//public static readonly DependencyProperty GeometryProperty = PieDataPoint.GeometryProperty.AddOwner(typeof(PieChartLabel), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.AffectsParentMeasure | FrameworkPropertyMetadataOptions.AffectsArrange, GeometryPropertyChanged));
private static void GeometryPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
PieChartLabel label = obj as PieChartLabel;
if (label != null)
{
bool isArcSmall;
PieChartHelper.GetPieChartInfo(e.NewValue as Geometry, out label.center, out label.arcMidpoint, out isArcSmall);
label.IsArcSmall = isArcSmall;
label.InvalidateArrange();
FrameworkElement fe = label.Parent as FrameworkElement;
if (fe != null)
{
fe.InvalidateMeasure();
}
}
}