static void
gtk_offscreen_box_add (GtkContainer *container,
GtkWidget *widget)
{
GtkOffscreenBox *offscreen_box = GTK_OFFSCREEN_BOX (container);
if (!offscreen_box->child1)
gtk_offscreen_box_add1 (offscreen_box, widget);
else if (!offscreen_box->child2)
gtk_offscreen_box_add2 (offscreen_box, widget);
else
g_warning ("GtkOffscreenBox cannot have more than 2 children\n");
}
int
main (int argc,
char *argv[])
{
GtkWidget *window, *widget, *vbox, *button;
GtkWidget *offscreen = NULL;
gboolean use_offscreen;
gtk_init (&argc, &argv);
use_offscreen = argc == 1;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 300,300);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_main_quit),
NULL);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
0, G_PI * 2, 0.01);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
button = gtk_button_new_with_label ("Remove child 2");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
if (use_offscreen)
{
offscreen = gtk_offscreen_box_new ();
g_signal_connect (scale, "value_changed",
G_CALLBACK (scale_changed),
offscreen);
}
else
{
offscreen = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
}
gtk_box_pack_start (GTK_BOX (vbox), offscreen, TRUE, TRUE, 0);
widget = create_widgets ();
if (use_offscreen)
gtk_offscreen_box_add1 (GTK_OFFSCREEN_BOX (offscreen),
widget);
else
gtk_paned_add1 (GTK_PANED (offscreen), widget);
widget = create_widgets ();
if (1)
{
GtkWidget *widget2, *box2, *offscreen2;
offscreen2 = gtk_offscreen_box_new ();
gtk_box_pack_start (GTK_BOX (widget), offscreen2, FALSE, FALSE, 0);
g_signal_connect (scale, "value_changed",
G_CALLBACK (scale_changed),
offscreen2);
box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_offscreen_box_add2 (GTK_OFFSCREEN_BOX (offscreen2), box2);
widget2 = gtk_button_new_with_label ("Offscreen in offscreen");
gtk_box_pack_start (GTK_BOX (box2), widget2, FALSE, FALSE, 0);
widget2 = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (widget2), "Offscreen in offscreen");
gtk_box_pack_start (GTK_BOX (box2), widget2, FALSE, FALSE, 0);
}
if (use_offscreen)
gtk_offscreen_box_add2 (GTK_OFFSCREEN_BOX (offscreen), widget);
else
gtk_paned_add2 (GTK_PANED (offscreen), widget);
gtk_widget_show_all (window);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (remove_clicked),
widget);
gtk_main ();
return 0;
}
