no more submodule

GtkSharp/Source/Samples/Sections/Widgets/CellRendererSection.cs

@@ -0,0 +1,53 @@
+using Gtk;
+using System;
+namespace Samples
+{
+
+	[Section (ContentType = typeof(CustomCellRenderer), Category = Category.Widgets)]
+	class CellRendererSection : ListSection
+	{
+		public CellRendererSection ()
+		{
+			AddItem (CreateCellRenderer ());
+         
+		}
+		ListStore liststore;
+
+		public (string, Widget) CreateCellRenderer ()
+		{
+			liststore = new ListStore (typeof (float), typeof (string));
+			liststore.AppendValues (0.5f, "50%");
+
+			TreeView view = new TreeView (liststore);
+
+			view.AppendColumn ("Progress", new CellRendererText (), "text", 1);
+			view.AppendColumn ("Progress", new CustomCellRenderer (), "percent", 0);
+			GLib.Timeout.Add (50, new GLib.TimeoutHandler (update_percent));
+
+			return (nameof(CustomCellRenderer), view);
+		}
+		
+		bool increasing = true;
+		bool update_percent ()
+		{
+			TreeIter iter;
+			liststore.GetIterFirst (out iter);
+			float perc = (float) liststore.GetValue (iter, 0);
+
+			if ((perc > 0.99) || (perc < 0.01 && perc > 0)) {
+				increasing = !increasing;
+			}
+
+			if (increasing)
+				perc += 0.01f;
+			else
+				perc -= 0.01f;
+
+			liststore.SetValue (iter, 0, perc);
+			liststore.SetValue (iter, 1, Convert.ToInt32 (perc * 100) + "%");
+
+			return true;
+		}
+	}
+
+}