using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace Cowain.Bake.Common.Converter
{
    public class ScaleConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {

            if (parameter == null)
                throw new ArgumentNullException("value can not be null");
            if (value == null)
                throw new ArgumentNullException("value can not be null");
            double c = System.Convert.ToDouble(parameter);
            double index = System.Convert.ToDouble(value);
            return index / c;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (parameter == null)
                throw new ArgumentNullException("value can not be null");
            if (value == null)
                throw new ArgumentNullException("value can not be null");
            double c = System.Convert.ToDouble(parameter);
            double index = System.Convert.ToDouble(value);
            return System.Convert.ToInt32(index * c);
        }
    }
}