using System.Globalization;
using System.Windows.Data;

namespace Plugin.BurnIn
{
    public class FontSizeConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (parameter == null) return 15;

            string[] ps = parameter.ToString().Split(',');
            int size = int.Parse(ps[0]);
            int baseSize = int.Parse(ps[1]);
            if (value is double width)
            {
                return CountFontSize(size, width, baseSize);
            }
            return 15;
        }

        public static double CountFontSize(double size, double limit, double baseSize)
        {
            return size * limit / baseSize;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}