CellRendererSpinner

GtkCellRendererSpinner renders a spinning animation in a cell, very similar to Spinner.

It can often be used as an alternative to a CellRendererProgress for displaying indefinite activity, instead of actual progress.

To start the animation in a cell, set the active property to true and increment the pulse property at regular intervals. The usual way to set the cell renderer properties for each cell is to bind them to columns in your tree model using e.g. gtk_tree_view_column_add_attribute.

Example: CellRendererSpinner:

public class Application : Gtk.Window {
	public Application () {
		// Prepare Gtk.Window:
		this.title = "My Gtk.CellRendererSpinner";
		this.window_position = Gtk.WindowPosition.CENTER;
		this.destroy.connect (Gtk.main_quit);
		this.set_default_size (350, 70);

		// The Model:
		Gtk.ListStore list_store = new Gtk.ListStore (3, typeof (string), typeof (bool), typeof (int));
		Gtk.TreeIter iter;

		list_store.append (out iter);
		list_store.set (iter, 0, "Burgenland", 1, true, 2, 1);
		list_store.append (out iter);
		list_store.set (iter, 0, "Carinthia", 1, false, 2, 0);
		list_store.append (out iter);
		list_store.set (iter, 0, "Lower Austria", 1, true, 2, 3);

		// The View:
		Gtk.TreeView view = new Gtk.TreeView.with_model (list_store);
		this.add (view);

		Gtk.CellRenderer cell = new Gtk.CellRendererText ();
		view.insert_column_with_attributes (-1, "State", cell, "text", 0);

		Gtk.CellRendererSpinner spinner = new Gtk.CellRendererSpinner ();

		Gtk.TreeViewColumn column = new Gtk.TreeViewColumn ();
		column.set_title ("Cities");
		column.pack_start (spinner, false);
		column.add_attribute (spinner, "active", 1);
		column.add_attribute (spinner, "pulse", 2);
		view.append_column (column);

		// Update the spinner pos:
		Timeout.add (50, () => {
			list_store.foreach ((model, path, iter) => {
				Value val;
				list_store.get_value (iter, 2, out val);
				val.set_int (val.get_int () + 1);
				list_store.set_value (iter, 2, val);
				return false;
			});
			return true;
		});
	}

	public static int main (string[] args) {
		Gtk.init (ref args);

		Application app = new Application ();
		app.show_all ();
		Gtk.main ();
		return 0;
	}
}

valac --pkg gtk+-3.0 Gtk.CellRendererSpinner.vala