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

namespace SWRIS.Converters
{
    public class SubtractConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is double height && parameter is string param)
            {
                if (double.TryParse(param, out double subtract))
                    return Math.Max(0, height - subtract);
            }
            return 200; // 默认值
        }

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