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"

#include <gtk/gtk.h>

enum
{
  COL_FIRST_NAME = 0,
  COL_LAST_NAME,
  NUM_COLS
} ;

GtkListStore *list_store;
GtkTreeStore *tree_store;
GtkTreeIter   iter, child;

static void tree_c_printing_test(void);

static GtkTreeModel *
create_and_fill_model (void)
{
  GtkTreeStore  *treestore;
  GtkTreeIter    toplevel, child;

  treestore = gtk_tree_store_new(NUM_COLS, G_TYPE_STRING, G_TYPE_STRING);

  /* Append a top level row and leave it empty */
  gtk_tree_store_append(treestore, &toplevel, NULL);

  /* Append a second top level row, and fill it with some data */
  gtk_tree_store_append(treestore, &toplevel, NULL);
  gtk_tree_store_set(treestore, &toplevel,
                     COL_FIRST_NAME, "Joe",
                     COL_LAST_NAME, "Dalton",
                     -1);

  /* Append a child to the second top level row, and fill in some data */
  gtk_tree_store_append(treestore, &child, &toplevel);
  gtk_tree_store_set(treestore, &child,
                     COL_FIRST_NAME, "Averell",
                     COL_LAST_NAME, "Dalton",
                     -1);

  return GTK_TREE_MODEL(treestore);
}

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

  void
  traverse_list_store (GtkListStore *liststore)
  {
    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)
{
  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_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);

    tree_store = gtk_tree_store_new(1, G_TYPE_STRING);

    /* Append an empty top-level row to the tree store.
    *  Iter will point to the new row */
    gtk_tree_store_append(tree_store, &iter, NULL);

    /* Append another empty top-level row to the tree store.
    *  Iter will point to the new row */
    gtk_tree_store_append(tree_store, &iter, NULL);

    /* Append a child to the row we just added.
    *  Child will point to the new row */
    gtk_tree_store_append(tree_store, &child, &iter);

    /* Get the first row, and add a child to it as well (could have been done
    *  right away earlier of course, this is just for demonstration purposes) */
    if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(tree_store), &iter))
    {
        /* Child will point to new row */
        gtk_tree_store_append(tree_store, &child, &iter);
    }
    else g_error("Oops, we should have a first row in the tree store!\n");

    GtkTreeViewColumn   *col;
    GtkCellRenderer     *renderer;
    GtkWidget           *view;
    GtkTreeModel        *model;

    GtkWidget *window;


    tree_c_printing_test();
}

static void tree_c_printing_test(void)
{
    printf("tree_c_printing_test() \
------------------------------------------------------------------\n\
(https://en.wikibooks.org/wiki/GTK (modulo) 2B_By_Example/Tree_View/Columns_and_Renderer)\n\
Trying to adapt the first example of this tuto to display a simple tree view in our window.\n\
Can't use :\n\
   - gtk_init(&argc, &argv);\n\
   - window = gtk_tree_view_new(GTK_WINDOW_TOPLEVEL);\n\
   - g_signal_connect(window, 'delete_event', gtk_main_quit, NULL);\n\
   - tree_c_test(); (or : create_view_and_model() or some equivalent tree description)\n\
   - gtk_container_add(GTK_CONTAINER(window), view);\n\
   - gtk_widget_show_all(window);\n\
   - gtk_main();\n\
(see main.c lines 35-44)\n\
");
}

//  https://en.wikibooks.org/wiki/GTK%2B_By_Example/Tree_View/Tree_Models

/*
https://stackoverflow.com/questions/51002454/how-to-list-all-the-rows-of-a-gtk-treeview


using System;
using System.Collections;
using Gtk;

public class Actress
{
    public string Name;
    public string Place;
    public int Year;

    public Actress(string name, string place, int year)
    {
        Name = name;
        Place = place;
        Year = year;
    }
}

public class SharpApp : Window
{
    ListStore store;
    Statusbar statusbar;

    enum Column
    {
        Name,
        Place,
        Year
    }

    Actress[] actresses =
    {
        new Actress("Jessica Alba", "Pomona", 1981),
        new Actress("Sigourney Weaver", "New York", 1949),
        new Actress("Angelina Jolie", "Los Angeles", 1975),
        new Actress("Natalie Portman", "Jerusalem", 1981),
        new Actress("Rachel Weissz", "London", 1971),
        new Actress("Scarlett Johansson", "New York", 1984)
    };

    public SharpApp() : base ("ListView")
    {
        BorderWidth = 8;

        SetDefaultSize(350, 250);
        SetPosition(WindowPosition.Center);
        DeleteEvent += delegate { Application.Quit(); };

        VBox vbox = new VBox(false, 8);


        ScrolledWindow sw = new ScrolledWindow();
        sw.ShadowType = ShadowType.EtchedIn;
        sw.SetPolicy(PolicyType.Automatic, PolicyType.Automatic);
        vbox.PackStart(sw, true, true, 0);

        store = CreateModel();

        TreeView treeView = new TreeView(store);
        treeView.RulesHint = true;
        treeView.RowActivated += OnRowActivated;
        sw.Add(treeView);

        AddColumns(treeView);

        statusbar = new Statusbar();

        vbox.PackStart(statusbar, false, false, 0);

        Add(vbox);
        ShowAll();
    }

    void OnRowActivated (object sender, RowActivatedArgs args) {

        TreeIter iter;
        TreeView view = (TreeView) sender;

        if (view.Model.GetIter(out iter, args.Path)) {
            string row = (string) view.Model.GetValue(iter, (int) Column.Name );
            row += ", " + (string) view.Model.GetValue(iter, (int) Column.Place );
            row += ", " + view.Model.GetValue(iter, (int) Column.Year );
            statusbar.Push(0, row);
        }
        // *** if I can dump treeview to the console here I'll be happy ***
        // *** I'd prefer a foreach or do/while ***
    }

    void AddColumns(TreeView treeView)
    {
        CellRendererText rendererText = new CellRendererText();
        TreeViewColumn column = new TreeViewColumn("Name", rendererText,
            "text", Column.Name);
        column.SortColumnId = (int) Column.Name;
        treeView.AppendColumn(column);

        rendererText = new CellRendererText();
        column = new TreeViewColumn("Place", rendererText,
            "text", Column.Place);
        column.SortColumnId = (int) Column.Place;
        treeView.AppendColumn(column);

        rendererText = new CellRendererText();
        column = new TreeViewColumn("Year", rendererText,
            "text", Column.Year);
        column.SortColumnId = (int) Column.Year;
        treeView.AppendColumn(column);
    }


    ListStore CreateModel()
    {
        ListStore store = new ListStore( typeof(string),
            typeof(string), typeof(int) );

        foreach (Actress act in actresses) {
            store.AppendValues(act.Name, act.Place, act.Year );
        }

        return store;
    }

    public static void Main()
    {
        Application.Init();
        new SharpApp();
        Application.Run();
    }
}
*/