WIP: tree successfully created. Now, let's display it in the window

include/ui.h

@@ -124,5 +124,5 @@ void ui_toggle_sidebar              ();
 
 void print_test_in_tree_dot_c(void);
 
-// GtkWidget *create_a_button_to_click_on(GemGraphClientWindow *window);
+GtkWidget *create_a_button(GemGraphClientWindow *window);
 

src/ui/tree.c

@@ -300,33 +300,35 @@ struct _TreeItem
 
 
 
-/* static void */
+static void
-/* print_hello (GtkWidget *widget, */
+print_hello (GtkWidget *widget,
-/*              gpointer   data) */
+             gpointer   data)
-/* { */
+{
-/*     static int nb; */
+    static int nb;
-/*     nb++; */
+    nb++;
-/*     printf("Button clicked  (n = %d)\n", nb); */
+    printf("From 'tree.c',  >  button clicked  (n = %d)\n", nb);
-/* } */
-
-/* GtkWidget *create_a_button_to_click_on(GemGraphClientWindow *my_window) */
-/* { */
-/*     GtkWidget *button; */
-/*     const char *text = "Hello !  I'm the new button.   Click me !"; */
-
-/*     button = gtk_button_new_with_label(text); */
-/*     gtk_box_append(GTK_BOX(my_window->runlib_objects), button); */
-/*     gtk_widget_show(button); */
-
-/*     g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL); */
-
-/*     printf("tree.c   >   print test()   \ */
-/* ------------------------------------\nClick the 'new button' in the GtkBox.\n"); */
-
-/*     return button; */
-/* } */
-
-void print_test_in_tree_dot_c() {
-    printf("tree.c   >   print test()   \
-------------------------------------\nClick the 'new button' in the GtkBox.\n");
 }
+
+GtkWidget *create_a_button(GemGraphClientWindow *my_window)
+{
+    GtkWidget *button;
+    const char *text = "Hello !  I'm the new button.   Click me !";
+
+    button = gtk_button_new_with_label(text);
+    /* gtk_box_append(GTK_BOX(my_window->runlib_objects), button); */
+    /* src/ui/tree.c:318:37: error: invalid use of incomplete typedef 'GemGraphClientWindow' */
+    /*                                 {aka 'struct _GemGraphClientWindow'} */
+    gtk_widget_show(button);
+
+    g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
+
+    printf("---------------------------------------------------------      tree.c  line 325\n\
+Current obstacle : invalid use of incomplete typedef 'GemGraphClientWindow'\n\
+How to enable the 'tree.c' code (line 318) to create widgets in the main window ?\n\
+    (In the meanwhile, you can click the 'new button' in the GtkBox.)\n\
+NB  The speed makefile bug has been fixed in branch [devel]\n\
+    (but not here, in [origin/dev/ui-simple-tree])\n");
+
+    return button;
+}
+

src/ui/window.c

@@ -22,10 +22,14 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <stdio.h>
+#include <gio/gio.h>
 #include <unistd.h>
 #include <gtk-4.0/gtk/gtk.h>
 #include <glib-2.0/glib.h>
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+
 #include "../../include/base.h"
 #include "../../include/ui.h"
 
@@ -50,7 +54,7 @@ float rotation_angles[N_AXIS] = { 0.0 }; // Rotation angles on each axis
 
 GtkWidget *gl_area = NULL;
 
-static GemGraphClientWindow *window;
+GemGraphClientWindow *window;
 
 /* -------------------------------------------------------------------------- */
 
@@ -70,6 +74,7 @@ struct _GemGraphClientWindow
     GtkLabel *toast_text;
     GtkGLArea *run_glarea;
     GtkBox *run_controls;
+  //  GtkButton *my_button;
 
     /* Stack objects */
     GtkStack *runlib_stack;
@@ -108,6 +113,7 @@ static void gem_graph_client_window_class_init(GemGraphClientWindowClass *klass)
     gtk_widget_class_bind_template_child(widget_class, GemGraphClientWindow, run_controls);
     gtk_widget_class_bind_template_child(widget_class, GemGraphClientWindow, runlib_stack);
     gtk_widget_class_bind_template_child(widget_class, GemGraphClientWindow, runlib_objects);
+//    gtk_widget_class_bind_template_child(widget_class, GemGraphClientWindow, my_button);
 }
 
 static void gem_graph_client_window_init(GemGraphClientWindow *self)
@@ -124,7 +130,8 @@ static void gem_graph_client_window_init(GemGraphClientWindow *self)
 
 /* -------------------------------------------------------------------------- */
 
-GtkWidget *create_a_button_to_click_on(GemGraphClientWindow *my_window);
+static void create_my_list_model();
+GtkWidget *create_a_button_in_(GemGraphClientWindow *my_window);
 
 void ui_set_stack(const char *mode)
 {
@@ -141,10 +148,9 @@ void ui_set_stack(const char *mode)
             break;
         case 'r':
             gtk_menu_button_set_icon_name(window->main_button_mode, "system-run-symbolic");
-            create_a_button_to_click_on(window);
+            create_my_list_model();
-         //   let_s_scroll_it_guys();
+            create_a_button_in_(window);
-            print_test_in_tree_dot_c();
+            create_a_button(window); // <<< This function is in tree.c
-
             break;
         case 'p':
             gtk_menu_button_set_icon_name(window->main_button_mode, "x-office-presentation-symbolic");
@@ -262,20 +268,88 @@ print_hello (GtkWidget *widget,
 {
     static int nb;
     nb++;
-    printf("Button clicked  (n = %d)\n", nb);
+    printf("From 'window.c',  >  button clicked  (n = %d)\n", nb);
 }
 
-GtkWidget *create_a_button_to_click_on(GemGraphClientWindow *my_window)
+GtkWidget *create_a_button_in_(GemGraphClientWindow *my_window)
 {
-    GtkWidget *button;
+    GtkWidget *my_button;
     const char *text = "Hello !  I'm the new button.   Click me !";
 
-    button = gtk_button_new_with_label(text);
+    my_button = gtk_button_new_with_label(text);
-    gtk_box_append(GTK_BOX(my_window->runlib_objects), button);
+    gtk_box_append(GTK_BOX(my_window->runlib_objects), my_button);
-    gtk_widget_show(button);
+    gtk_widget_show(my_button);
 
-    g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
+    g_signal_connect (my_button, "clicked", G_CALLBACK (print_hello), NULL);
 
-    return button;
+    return my_button;
+}
+
+
+
+
+enum
+{
+  STRING_COLUMN,
+  NUM_COLUMNS
+};
+
+
+/* TreeItem structure */
+typedef struct _TreeItem TreeItem;
+struct _TreeItem
+{
+  const char     *label;
+  TreeItem       *children;
+};
+
+//  tree data
+static TreeItem E[] = {NULL}, F[] = {NULL}, G[] = {NULL}, H[] = {NULL};
+static TreeItem I[] = {NULL}, K[] = {NULL}, N[] = {NULL}, M[] = {NULL};
+static TreeItem L[] = {{"M", M}, {"N", N}, {NULL }}, J[] = {{"L", L}, {NULL}};
+static TreeItem D[] = {{"I", I}, {"J", J}, {"K", K}, {NULL}};
+static TreeItem C[] = {{"F", F}, {"G", G}, {"H", H}, {NULL}};
+static TreeItem A[] = {{"D", D}, {NULL}}, B[] = {{"E", E}, {NULL}};
+static TreeItem R[] = {{"A", A}, {"B", B}, {"C", C}, {NULL}};
+static TreeItem O[] = {{"ROOT", R}, {NULL}}; //  Artefact added for symmetry
+
+
+static GListStore *create_node_recursive (GListModel *model,  //  GListStore* g_list_store_new (GType item_type)
+                                   TreeItem *current_item,
+                                   GtkTreeIter *iter_parent,
+                                   int depth)
+{
+  if (model == NULL)
+    printf("tree.c   >   print test() in :  create_node_recursive()");
+
+  GtkTreeIter iter;
+
+  if (model == NULL)
+      model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING);
+
+  while (current_item->label) {
+    if (1) printf("[%d] %s,   ", depth, current_item->label);
+    gtk_tree_store_append (model, &iter, iter_parent);
+    gtk_tree_store_set (model, &iter, STRING_COLUMN, current_item->label, -1);
+
+    if (current_item->children)
+      create_node_recursive (model, current_item->children, &iter, depth + 1);
+    else
+      break;
+
+    current_item++;
+  }
+
+  if (depth == 0)
+    return G_LIST_MODEL(model); // can cast to GListModel or to GtkTreeStore ?
+  else
+    return NULL;
+}
+
+static void create_my_list_model()
+{
+    GListStore *my_list_model = NULL;
+    my_list_model = create_node_recursive (my_list_model, O, NULL, 0);
+    printf("   <<    tree is OK\n");
 }