/// <summary>
/// Handles changes to the Value property.
/// </summary>
private static void OnValueChanged(DependencyObject d,
DependencyPropertyChangedEventArgs e)
{
d.CoerceValue(MinimumProperty);
d.CoerceValue(MaximumProperty);
StarControl starControl = (StarControl)d;
if (starControl.Value == 0.0m)
{
starControl.starForeground.Fill = Brushes.Gray;
}
else
{
starControl.starForeground.Fill = starControl.StarForegroundColor;
}
Int32 marginLeftOffset = (Int32)(starControl.Value * (Decimal)STAR_SIZE);
starControl.mask.Margin = new Thickness(marginLeftOffset, 0, 0, 0);
starControl.InvalidateArrange();
starControl.InvalidateMeasure();
starControl.InvalidateVisual();
}