gem-graph-client/src/ui/tree.c

/*
 *      Gem-graph OpenGL experiments
 *
 *      Desc: User interface functions
 *
 *  Copyright (C) 2023 Jean Sirmai <jean@a-lec.org>
 *
 *  This file is part of Gem-graph.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <unistd.h>
#include <gtk-4.0/gtk/gtk.h>
#include <glib-2.0/glib.h>

#include "../../include/base.h"
#include "../../include/ui.h"

GtkListStore *list_store;
GtkTreeIter   iter;

  /***********************************************************
  *                                                          *
  *  Going through every row in a list store                 *
  *                                                          *
  ***********************************************************/

  void
  traverse_list_store (GtkListStore *liststore)
  {
    GtkTreeIter  iter;
    gboolean     valid;

    g_return_if_fail ( liststore != NULL );

    /* Get first row in list store */
    valid = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(liststore), &iter);

    while (valid)
    {
       /* ... do something with that row using the iter ...          */
       /* (Here column 0 of the list store is of type G_TYPE_STRING) */
       gtk_list_store_set(liststore, &iter, 0, "Joe", -1);

       /* Make iter point to the next row in the list store */
       valid = gtk_tree_model_iter_next(GTK_TREE_MODEL(liststore), &iter);
    }
  }
 /*************************************************************
 *                                                            *
 *   Converting a GtkTreePath into a GtkTreeIter              *
 *                                                            *
 *************************************************************/

 /*************************************************************
 *                                                            *
 *   onTreeViewRowActivated: a row has been double-clicked    *
 *                                                            *
 *************************************************************/

void
onTreeViewRowActivated (GtkTreeView *view, GtkTreePath *path,
                        GtkTreeViewColumn *col, gpointer userdata)
{
  GtkTreeIter   iter;
  GtkTreeModel *model;

  model = gtk_tree_view_get_model(view);

  if (gtk_tree_model_get_iter(model, &iter, path))
  {
    gchar *name;

    gtk_tree_model_get(model, &iter, "ANY_COLUMN_NAME", &name, -1);

    g_print ("The row containing the name '%s' has been double-clicked.\n", name);

    g_free(name);
  }
}

void
tree_c_printing_test(void)
{
    list_store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_UINT);

    /* Append empty rows to the list store. Iter will point to the new row */
    gtk_list_store_append(list_store, &iter);
    gtk_list_store_append(list_store, &iter);
    gtk_list_store_append(list_store, &iter);

    printf("tree_c_printing_test() \
---------------------------------------------------------\n\n\
(https://en.wikibooks.org/wiki/GTK (modulo) 2B_By_Example/Tree_View/Tree_Models)\n\n\
cf. tuto : gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_UINT)  - (cf. line 69)\n\
           creates a new list store with two columns.\n\
Column 0 stores a string and column 1 stores an unsigned integer for each row.\n\
Three empty lines have been added to the model - (cf. line 100).\n");
}