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namespace GMap.NET.MapProviders
{
   using System;
   using GMap.NET.Projections;

   public abstract class LithuaniaMapProviderBase : GMapProvider
   {
      public LithuaniaMapProviderBase()
      {
         RefererUrl = "http://www.maps.lt/map/";
         Copyright = string.Format("©{0} Hnit-Baltic - Map data ©{0} ESRI", DateTime.Today.Year);
         MaxZoom = 12;
         Area = new RectLatLng(56.431489960361, 20.8962105239809, 5.8924169643369, 2.58940626652217);
      }

      #region GMapProvider Members
      public override Guid Id
      {
         get
         {
            throw new NotImplementedException();
         }
      }

      public override string Name
      {
         get
         {
            throw new NotImplementedException();
         }
      }

      public override PureProjection Projection
      {
         get
         {
            return LKS94Projection.Instance;
         }
      }

      GMapProvider[] overlays;
      public override GMapProvider[] Overlays
      {
         get
         {
            if(overlays == null)
            {
               overlays = new GMapProvider[] { this };
            }
            return overlays;
         }
      }

      public override PureImage GetTileImage(GPoint pos, int zoom)
      {
         throw new NotImplementedException();
      }
      #endregion
   }

   /// <summary>
   /// LithuaniaMap provider, http://www.maps.lt/map/
   /// </summary>
   public class LithuaniaMapProvider : LithuaniaMapProviderBase
   {
      public static readonly LithuaniaMapProvider Instance;

      LithuaniaMapProvider()
      {
      }

      static LithuaniaMapProvider()
      {
         Instance = new LithuaniaMapProvider();
      }

      #region GMapProvider Members

      readonly Guid id = new Guid("5859079F-1B5E-484B-B05C-41CE664D8A93");
      public override Guid Id
      {
         get
         {
            return id;
         }
      }

      readonly string name = "LithuaniaMap";
      public override string Name
      {
         get
         {
            return name;
         }
      }

      public override PureImage GetTileImage(GPoint pos, int zoom)
      {
         string url = MakeTileImageUrl(pos, zoom, LanguageStr);

         return GetTileImageUsingHttp(url);
      }

      #endregion

      string MakeTileImageUrl(GPoint pos, int zoom, string language)
      {
         // http://dc5.maps.lt/cache/mapslt/map/_alllayers/L08/R00000912/C00000d25.png

         return string.Format(UrlFormat, zoom, pos.Y, pos.X);
      }

      static readonly string UrlFormat = "http://dc5.maps.lt/cache/mapslt/map/_alllayers/L{0:00}/R{1:x8}/C{2:x8}.png";
   }
}