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

namespace Demo.Common.Converters
{
    public class AspectRatioConverter : IMultiValueConverter
    {
        private readonly double ratio = 1.777;

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values.Length == 2 && values[0] is double height && values[1] is double maxWidth)
            {
                Console.WriteLine($@"height {height}  maxWidth {maxWidth}");
                var controlWidth = height * ratio;
                return controlWidth > maxWidth ? maxWidth : controlWidth;
            }
            //else if (values.Length == 4 && values[0] is double stackHeight
            //    && values[1] is double stackWidth && values[2] is int userPageSize
            //    && values[3] is Thickness margin)
            //{
            //    var controlWidth = stackHeight  * ratio;  
            //}
            return 0;
        }

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