/// <summary>
/// RatingProperty property changed handler.
/// </summary>
/// <param name="d">MetroRating that changed its Rating.</param>
/// <param name="e">Event arguments.</param>
private static void OnRatingPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
MetroRating source = d as MetroRating;
double value = (double)e.NewValue;
UpdateRatingImage(source, value);
}
private static void UpdateRatingImage(MetroRating source, double value)
{
// make sure the static cache of images is initialized
InitializeStars();
// constrain rating between min and max rating values (0-5)
value = Round(value, 1);
value = Math.Min(value, MaxRating);
value = Math.Max(value, MinRating);
// swap out the image
if (source._image != null)
{
int starIndex = (int)(value * 2);
source._image.Source = _stars[starIndex];
}
}