DrawItem Event (RasterImageList)

using Leadtools.WinForms;
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Drawing;

class MyForm3 : Form
{
   RasterImageList imageList;
   RasterCodecs codecs;
   public MyForm3(string title)
   {
      Text = title;
      // Set the size of the form
      Size = new Size(400, 200);

      // Create a new RasterImageList control
      imageList = new RasterImageList();
      imageList.Dock = DockStyle.Fill;
      imageList.SelectionMode = RasterImageListSelectionMode.Single;
      imageList.Size = Size;
      Controls.Add(imageList);
      imageList.BringToFront();

      codecs = new RasterCodecs();

      // Create three items
      string imagesPath = LEAD_VARS.ImagesDir;

      for(int i = 0; i < 3; i++)
      {
         // Load the image
         int index = i + 1;
         string imageFileName = Path.Combine(imagesPath, @"ImageProcessingDemo\Image" + index.ToString() + ".cmp");
         RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1);
         RasterImageListItem item = new RasterImageListItem(image, 1, "Item" + index.ToString());

         // Select the first item
         if(i == 0)
            item.Selected = true;

         // Add the item to the image list
         imageList.Items.Add(item);
      }

      // Change the item size
      imageList.ItemSize = new Size(200, 200);

      // Change the item image size
      imageList.ItemImageSize = new Size(120, 120);

      // We are going to draw the items ourselves
      imageList.ViewStyle = RasterImageListViewStyle.OwnerDraw;

      // Add a handler to the DrawItem event
      imageList.DrawItem += new EventHandler<RasterImageListDrawItemEventArgs>(rasterImageList_DrawItem);

      // Add the RasterImageList to the control collection.
      Controls.Add(imageList);
   }

   private void rasterImageList_DrawItem(object sender, RasterImageListDrawItemEventArgs e)
   {
      RasterImageListItem item = e.Item;
      RasterImageList imageList = item.ImageList;
      Graphics g = e.Graphics;

      // get the item rectangle
      Rectangle rc = imageList.GetItemRectangle(item);

      // sanity check
      if(rc.IsEmpty)
         return;

      // we want to draw a 1 pixel black rectangle around the item
      // then we fill the inside of the rectangle with white if the item
      // is not selected or lightgray if it is

      g.DrawRectangle(Pens.Black, rc.Left, rc.Top, rc.Width - 1, rc.Height - 1);

      // we used up 1 pixel
      rc.Inflate(-1, -1);

      Brush b;
      if(item.Selected)
         b = Brushes.LightGray;
      else
         b = Brushes.White;
      g.FillRectangle(b, rc);

      // calculate the rectangles for image and text
      if(imageList.ShowItemText)
      {
         // text is visible
         // draw the text at the bottom of the item
         int textHeight = (int)(g.MeasureString("WWW", imageList.Font).Height + 4);
         Rectangle textRect = Rectangle.FromLTRB(
            rc.Left,
            rc.Bottom - textHeight,
            rc.Right,
            rc.Bottom);

         if(!textRect.IsEmpty)
         {
            StringFormat sf = new StringFormat();
            sf.Alignment = StringAlignment.Center;
            sf.LineAlignment = StringAlignment.Center;
            sf.Trimming = StringTrimming.EllipsisPath;
            sf.FormatFlags = StringFormatFlags.NoWrap;

            g.DrawString(
               item.Text,
               imageList.Font,
               Brushes.Black,
               textRect,
               sf);
            sf.Dispose();

            // we need to update the item rectangle for the space
            // we used up to draw the text
            rc.Height -= textRect.Height;
         }
      }

      // rc is the image rectangle
      if(!rc.IsEmpty)
      {
         // now rc holds the rectangle to draw the image into

         // first, set the correct page
         int savePage = -1;
         if(item.Image.Page != item.Page)
         {
            // the page is different

            // save current image page so we can set it back when we are done
            savePage = item.Image.Page;

            // disable the image events, we are going to set the page back,
            // so we do not want anybody subscribing to this image Changed
            // event to know we changed it.
            item.Image.DisableEvents();

            // set new page
            item.Image.Page = item.Page;
         }

         try
         {
            // we want to center the image into whatever left of rc
            Size itemImageSize = imageList.ItemImageSize;
            Rectangle imageRect = new Rectangle(
               rc.Left + (rc.Width - itemImageSize.Width) / 2,
               rc.Top + (rc.Height - itemImageSize.Height) / 2,
               itemImageSize.Width,
               itemImageSize.Height);

            // we want to keep the aspect ratio
            imageRect = RasterImageList.GetFixedAspectRatioImageRectangle(
               item.Image.ImageWidth,
               item.Image.ImageHeight,
               imageRect);

            // draw the image
            LeadRect lRect = new LeadRect(imageRect.Left, imageRect.Top, imageRect.Width, imageRect.Height);
            RasterImagePainter.Paint(item.Image, e.Graphics, lRect, imageList.PaintProperties);

            // finally, draw a black rectangle around the image
            imageRect.Inflate(1, 1);
            g.DrawRectangle(
               Pens.Black,
               imageRect.Left,
               imageRect.Top,
               imageRect.Width - 1,
               imageRect.Height - 1);
         }
         finally
         {
            // reset the old page
            if(savePage != -1)
            {
               item.Image.Page = savePage;

               // re-enable the events
               item.Image.EnableEvents();
            }
         }
      }
   }
}

public void RasterImageList_DrawItem(string title)
{
   MyForm3 form = new MyForm3(title);
   form.ShowDialog();
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}