Hello everyone!!
I wanted to build a tree in Gtk, but when I read about Gtk.TreeVIew, I saw that it was deprecated, and that as such I should use Gtk.ColumnView.
This did not sound too bad since Gtk.ColumnView seems to use Gio.ListModel structures and I thought it wouldn’t bee hard since I’ve worked with ListModels before…
However, it was not!
Currently, I’m wondering how to do anything at all with the Gtk.ColumnView and all the widgets I think I need to use it with: Gtk.TreeListMode/Gtk.TreeExpander
I’ve scoured the internet for a few minutes but I couldn’t find a guide that explains or atleast hints on how to use it. I expected it to be easy because it was super simple to use Gtk.ListView, but for Gtk.ColumnView I don’t have any hint.
could be nice if someone could maybe show me the general idea on how to use it as is done here for Gtk.ListView: https://docs.gtk.org/gtk4/class.ListView.html
static void
setup_listitem_cb (GtkListItemFactory *factory,
GtkListItem *list_item)
{
GtkWidget *image;
image = gtk_image_new ();
gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE);
gtk_list_item_set_child (list_item, image);
}
static void
bind_listitem_cb (GtkListItemFactory *factory,
GtkListItem *list_item)
{
GtkWidget *image;
GAppInfo *app_info;
image = gtk_list_item_get_child (list_item);
app_info = gtk_list_item_get_item (list_item);
gtk_image_set_from_gicon (GTK_IMAGE (image), g_app_info_get_icon (app_info));
}
static void
activate_cb (GtkListView *list,
guint position,
gpointer unused)
{
GAppInfo *app_info;
app_info = g_list_model_get_item (G_LIST_MODEL (gtk_list_view_get_model (list)), position);
g_app_info_launch (app_info, NULL, NULL, NULL);
g_object_unref (app_info);
}
...
model = create_application_list ();
factory = gtk_signal_list_item_factory_new ();
g_signal_connect (factory, "setup", G_CALLBACK (setup_listitem_cb), NULL);
g_signal_connect (factory, "bind", G_CALLBACK (bind_listitem_cb), NULL);
list = gtk_list_view_new (GTK_SELECTION_MODEL (gtk_single_selection_new (model)), factory);
g_signal_connect (list, "activate", G_CALLBACK (activate_cb), NULL);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), list);
thank you
