private void DrawThumbnailOverlay(Graphics g, float opacity)
    {
      try
      {
        if (UpdatingCoverArtImage || UpdatingCoverArtImageList)
        {
          return;
        }

        if (GUIWindowManager.IsRouted)
        {
          this.Hide();
          return;
        }
        else
        {
          this.Show();
        }

        if (CurrentThumbImage == null && _CoverArtImages.Count == 0)
        {
          return;
        }

        Image img = GetNextImage();

        if (img == null)
        {
          return;
        }

        Rectangle rect = new Rectangle(0, 0, Width, Height);
        SolidBrush fillBrush = new SolidBrush(Color.FromArgb((int)(255f * opacity), Color.Black));
        g.FillRectangle(fillBrush, rect);
        fillBrush.SafeDispose();

        int imgHeight = Height;
        int imgWidth = imgHeight;

        if (!_KeepCoverArtAspectRatio)
        {
          imgWidth = Width;
        }

        int left = (Width - imgHeight) / 2;

        float[][] matrixItems = {
                                  new float[] {1, 0, 0, 0, 0},
                                  new float[] {0, 1, 0, 0, 0},
                                  new float[] {0, 0, 1, 0, 0},
                                  new float[] {0, 0, 0, opacity, 0},
                                  new float[] {0, 0, 0, 0, 1}
                                };

        ColorMatrix colorMatrix = new ColorMatrix(matrixItems);
        ImageAttributes imgAttrib = new ImageAttributes();
        imgAttrib.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);

        //g.DrawImage(CurrentThumbImage, new Rectangle(left, 0, imgWidth, imgHeight), 0, 0,
        //    CurrentThumbImage.Width, CurrentThumbImage.Height, GraphicsUnit.Pixel, imgAttrib);

        g.DrawImage(img, new Rectangle(left, 0, imgWidth, imgHeight), 0, 0,
                    img.Width, img.Height, GraphicsUnit.Pixel, imgAttrib);
      }

      catch (Exception ex)
      {
        Console.WriteLine("DrawThumbnailOverlay caused an exception:{0}", ex);
      }
    }