#include <gtk/gtk.h>

enum 
{ 
  COLOR = 0,
  COLUMNS
};

const gchar *clr[6] = { "00", "33", "66", "99", "CC", "FF" };

static void setup_tree_view (GtkWidget*);
static void cell_data_func (GtkTreeViewColumn*, GtkCellRenderer*,
                             GtkTreeModel*, GtkTreeIter*, gpointer);

int main (int argc,
          char *argv[])
{
  GtkWidget *window, *treeview, *scrolled_win;
  GtkListStore *store;
  GtkTreeIter iter;
  guint i, j, k;
  
  gtk_init (&argc, &argv);
  
  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (window), "Color List");
  gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  gtk_widget_set_size_request (window, 250, 175);
  
  g_signal_connect (G_OBJECT (window), "destroy",
                    G_CALLBACK (gtk_main_quit), NULL);
  
  treeview = gtk_tree_view_new ();
  setup_tree_view (treeview);
  store = gtk_list_store_new (COLUMNS, G_TYPE_STRING);
  
  /* Add all of the products to the GtkListStore. */
  for (i = 0; i < 6; i++)
    for (j = 0; j < 6; j++)
      for (k = 0; k < 6; k++)
      {
        gchar *color = g_strconcat ("#", clr[i], clr[j], clr[k], NULL);
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter, COLOR, color, -1);
        g_free (color);
      }
  
  gtk_tree_view_set_model (GTK_TREE_VIEW (treeview), GTK_TREE_MODEL (store));
  g_object_unref (store);
  
  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
                                  GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
  
  gtk_container_add (GTK_CONTAINER (scrolled_win), treeview);
  gtk_container_add (GTK_CONTAINER (window), scrolled_win);
  gtk_widget_show_all (window);
  
  gtk_main ();
  return 0;
}

/* Add three columns to the GtkTreeView. All three of the columns will be
 * displayed as text, although one is a gboolean value and another is
 * an integer. */
static void
setup_tree_view (GtkWidget *treeview)
{
  GtkCellRenderer *renderer;
  GtkTreeViewColumn *column;
  
  renderer = gtk_cell_renderer_text_new ();
  column = gtk_tree_view_column_new_with_attributes
                         ("Standard Colors", renderer, "text", COLOR, NULL);
  gtk_tree_view_append_column (GTK_TREE_VIEW (treeview), column);
  
  gtk_tree_view_column_set_cell_data_func (column, renderer,
                                           cell_data_func, NULL, NULL);

}

static void
cell_data_func (GtkTreeViewColumn *column,
                GtkCellRenderer *renderer,
                GtkTreeModel *model,
                GtkTreeIter *iter,
                gpointer data)
{
  gchar *text;

  /* Get the color string stored by the column and make it the foreground color. */
  gtk_tree_model_get (model, iter, COLOR, &text, -1);
  g_object_set (renderer, "foreground", "#FFFFFF", "foreground-set", TRUE,
                "background", text, "background-set", TRUE, "text", text, NULL);
  g_free (text);
}