[longomatch] Make Image serilzable for all backends

[Andoni Morales Alastruey <amorales src gnome org>]

commit 122fce3bc216c56f110e115c5780a070d51f5f79
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Thu May 30 19:46:35 2013 +0200

    Make Image serilzable for all backends

 LongoMatch.Core/Common/Image.cs |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/LongoMatch.Core/Common/Image.cs b/LongoMatch.Core/Common/Image.cs
index 9b993ed..3f5c4ad 100644
--- a/LongoMatch.Core/Common/Image.cs
+++ b/LongoMatch.Core/Common/Image.cs
@@ -15,6 +15,7 @@
 //  along with this program; if not, write to the Free Software
 //  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 // 
+using System.Runtime.Serialization;
 
 namespace LongoMatch.Common
 {
@@ -28,7 +29,7 @@ namespace LongoMatch.Common
 #endif
 
        [Serializable]
-       public class Image
+       public class Image: ISerializable
        {
                SImage image;
                
@@ -51,6 +52,16 @@ namespace LongoMatch.Common
                        Scale (Constants.THUMBNAIL_MAX_WIDTH, Constants.THUMBNAIL_MAX_HEIGHT);
                }
                
+               // this constructor is automatically called during deserialization
+               public Image (SerializationInfo info, StreamingContext context) {
+                       image = Deserialize ((byte[]) info.GetValue ("pngbuf", typeof (byte[]))).Value;
+               }
+
+               // this method is automatically called during serialization
+               public void GetObjectData(SerializationInfo info, StreamingContext context) {
+                       info.AddValue("pngbuf", Serialize());
+               }
+               
                
 #if HAVE_GTK
                public byte[] Serialize () {