implemented "MCG 1.01" images.

ArcFormats/FC01/WidgetMCG.xaml.cs

@@ -0,0 +1,77 @@
+using GameRes.Formats.FC01;
+using GameRes.Formats.Strings;
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Windows.Controls;
+using System.Windows.Data;
+
+namespace GameRes.Formats.GUI
+{
+    /// <summary>
+    /// Interaction logic for WidgetMCG.xaml
+    /// </summary>
+    public partial class WidgetMCG : StackPanel
+    {
+        public WidgetMCG ()
+        {
+            InitializeComponent();
+            var none = new KeyValuePair<string, byte>[] { new KeyValuePair<string, byte> (arcStrings.ArcIgnoreEncryption, 0) };
+            Title.ItemsSource = none.Concat (McgFormat.KnownKeys.OrderBy (x => x.Key));
+        }
+
+        public byte GetKey ()
+        {
+            return ByteKeyConverter.StringToByte (this.Passkey.Text);
+        }
+    }
+
+    internal static class ByteKeyConverter
+    {
+        public static string ByteToString (object value)
+        {
+            byte key = (byte)value;
+            return key.ToString ("X2", CultureInfo.InvariantCulture);
+        }
+
+        public static byte StringToByte (object value)
+        {
+            string s = value as string;
+            if (string.IsNullOrEmpty (s))
+                return 0;
+            byte key;
+            if (!byte.TryParse (s, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out key))
+                return 0;
+            return key;
+        } 
+    }
+
+    [ValueConversion (typeof (byte), typeof (string))]
+    class ByteToStringConverter : IValueConverter
+    {
+        public object Convert (object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return ByteKeyConverter.ByteToString (value);
+        }
+
+        public object ConvertBack (object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return ByteKeyConverter.StringToByte (value);
+        }
+    }
+
+    [ValueConversion (typeof (string), typeof (byte))]
+    class StringToByteConverter : IValueConverter
+    {
+        public object Convert (object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return ByteKeyConverter.StringToByte (value);
+        }
+
+        public object ConvertBack (object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return ByteKeyConverter.ByteToString (value);
+        }
+    }
+}