using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using System.Windows.Media.Imaging;
//https://cromwellhaus.com/2007/07/binding-to-the-byte-of-an-image-in-wpf/
namespace ProjetTheAlone.Converter
{
    public class BinaryImageConverter : IValueConverter
    {
        object IValueConverter.Convert(object value,
            Type targetType,
            object parameter,
            System.Globalization.CultureInfo culture)
        {
            if (value != null && value is byte?[])
            {
                byte?[] bytes = value as byte?[];
                byte[] bb = Array.ConvertAll<byte?, byte>(bytes,
                            delegate (byte? b)
                            {
                                return b.Value;
                            });
                MemoryStream stream = new MemoryStream(bb);

                BitmapImage image = new BitmapImage();
                image.BeginInit();
                image.StreamSource = stream;
                image.EndInit();

                return image;
            }

            return null;
        }

        object IValueConverter.ConvertBack(object value,
            Type targetType,
            object parameter,
            System.Globalization.CultureInfo culture)
        {
            if (value != null)
            {
                byte?[] data;
                JpegBitmapEncoder encoder = new JpegBitmapEncoder();
                encoder.Frames.Add(BitmapFrame.Create((BitmapImage)value));
                using (MemoryStream ms = new MemoryStream())
                {
                    encoder.Save(ms);
                    byte[] bb = ms.ToArray();
                    data = Array.ConvertAll<byte, byte?>(bb,
                    delegate (byte b)
                    {
                        return b;
                    });

                    return data;
                }
            }

            return null;
        }
    }
}