gtk/tests/testcombochange.c

#include <gtk/gtk.h>
#include <stdarg.h>

GtkWidget *text_view;
GtkListStore *model;
GArray *contents;

static char next_value = 'A';

static void
test_init ()
{
  if (g_file_test ("../gdk-pixbuf/libpixbufloader-pnm.la",
		   G_FILE_TEST_EXISTS))
    {
      g_setenv ("GDK_PIXBUF_MODULE_FILE", "../gdk-pixbuf/gdk-pixbuf.loaders", TRUE);
      g_setenv ("GTK_IM_MODULE_FILE", "../modules/input/gtk.immodules", TRUE);
    }
}

static void
log (const char *fmt,
     ...)
{
  GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
  GtkTextIter iter;
  va_list vap;
  char *msg;
  GString *order_string;
  GtkTextMark *tmp_mark;
  int i;

  va_start (vap, fmt);
  
  msg = g_strdup_vprintf (fmt, vap);

  gtk_text_buffer_get_end_iter (buffer, &iter);
  gtk_text_buffer_insert (buffer, &iter, msg, -1);

  order_string = g_string_new ("\n  ");
  for (i = 0; i < contents->len; i++)
    {
      if (i)
	g_string_append_c (order_string, ' ');
      g_string_append_c (order_string, g_array_index (contents, char, i));
    }
  g_string_append_c (order_string, '\n');
  gtk_text_buffer_insert (buffer, &iter, order_string->str, -1);
  g_string_free (order_string, TRUE);

  tmp_mark = gtk_text_buffer_create_mark (buffer, NULL, &iter, FALSE);
  gtk_text_view_scroll_mark_onscreen (GTK_TEXT_VIEW (text_view), tmp_mark);
  gtk_text_buffer_delete_mark (buffer, tmp_mark);

  g_free (msg);
}

static GtkWidget *
align_button_new (const char *text)
{
  GtkWidget *button = gtk_button_new ();
  GtkWidget *label = gtk_label_new (text);

  gtk_container_add (GTK_CONTAINER (button), label);
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);

  return button;
}

static GtkWidget *
create_combo (const char *name,
	      gboolean is_list)
{
  GtkCellRenderer *cell_renderer;
  GtkWidget *combo;
  char *rc_string;
  
  rc_string = g_strdup_printf ("style \"%s-style\" {\n"
			       "  GtkComboBox::appears-as-list = %d\n"
			       "}\n"
			       "\n"
			       "widget \"*.%s\" style \"%s-style\"",
			       name, is_list, name, name);
  gtk_rc_parse_string (rc_string);
  g_free (rc_string);

  combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (model));
  cell_renderer = gtk_cell_renderer_text_new ();
  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell_renderer, TRUE);
  gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), cell_renderer,
				  "text", 0, NULL);

  gtk_widget_set_name (combo, name);
  
  return combo;
}

static void
on_insert (void)
{
  GtkTreeIter iter;
  
  int insert_pos;
  char new_value[2];

  new_value[0] = next_value++;
  new_value[1] = '\0';

  if (next_value > 'Z')
    next_value = 'A';
  
  if (contents->len)
    insert_pos = g_random_int_range (0, contents->len + 1);
  else
    insert_pos = 0;
  
  gtk_list_store_insert (model, &iter, insert_pos);
  gtk_list_store_set (model, &iter, 0, new_value, -1);

  g_array_insert_val (contents, insert_pos, new_value);

  log ("Inserted '%c' at position %d", new_value[0], insert_pos);
}

static void
on_delete (void)
{
  GtkTreeIter iter;
  
  int delete_pos;
  char old_val;

  if (!contents->len)
    return;
  
  delete_pos = g_random_int_range (0, contents->len);
  gtk_tree_model_iter_nth_child (GTK_TREE_MODEL (model), &iter, NULL, delete_pos);
  
  gtk_list_store_remove (model, &iter);

  old_val = g_array_index (contents, char, delete_pos);
  g_array_remove_index (contents, delete_pos);
  log ("Deleted '%c' from position %d", old_val, delete_pos);
}

static void
on_reorder (void)
{
  GArray *new_contents = g_array_new (FALSE, FALSE, sizeof (char));
  gint *shuffle_array = g_new (int, contents->len);
  gint *shuffle_array_inverse = g_new (int, contents->len);
  gint i;

  for (i = 0; i < contents->len; i++)
    shuffle_array[i] = i;

  for (i = 0; i < contents->len - 1; i++)
    {
      gint pos = g_random_int_range (i, contents->len);
      gint tmp;
      
      tmp = shuffle_array[i];
      shuffle_array[i] = shuffle_array[pos];
      shuffle_array[pos] = tmp;
    }

  gtk_list_store_reorder (model, shuffle_array);

  for (i = 0; i < contents->len; i++)
    shuffle_array_inverse[shuffle_array[i]] = i;
  
  for (i = 0; i < contents->len; i++)
    g_array_append_val (new_contents,
			g_array_index (contents, char, shuffle_array_inverse[i]));
  g_array_free (contents, TRUE);
  contents = new_contents;

  log ("Reordered array");
    
  g_free (shuffle_array);
  g_free (shuffle_array_inverse);
}

int
main (int argc, char **argv)
{
  GtkWidget *dialog;
  GtkWidget *scrolled_window;
  GtkWidget *hbox;
  GtkWidget *button_vbox;
  GtkWidget *combo_vbox;
  GtkWidget *button;
  GtkWidget *menu_combo;
  GtkWidget *alignment;
  GtkWidget *label;
  GtkWidget *list_combo;
  
  test_init ();

  gtk_init (&argc, &argv);

  model = gtk_list_store_new (1, G_TYPE_STRING);
  contents = g_array_new (FALSE, FALSE, sizeof (char));
  
  dialog = gtk_dialog_new_with_buttons ("GtkComboBox model changes",
					NULL, GTK_DIALOG_NO_SEPARATOR,
					GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
					NULL);
  
  hbox = gtk_hbox_new (FALSE, 12);
  gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), hbox, TRUE, TRUE, 0);

  combo_vbox = gtk_vbox_new (FALSE, 8);
  gtk_box_pack_start (GTK_BOX (hbox), combo_vbox, FALSE, FALSE, 0);

  label = gtk_label_new (NULL);
  gtk_label_set_markup (GTK_LABEL (label), "<b>Menu mode</b>");
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_box_pack_start (GTK_BOX (combo_vbox), label, FALSE, FALSE, 0);

  alignment = g_object_new (GTK_TYPE_ALIGNMENT, "left-padding", 12, NULL);
  gtk_box_pack_start (GTK_BOX (combo_vbox), alignment, FALSE, FALSE, 0);

  menu_combo = create_combo ("menu-combo", FALSE);
  gtk_container_add (GTK_CONTAINER (alignment), menu_combo);

  label = gtk_label_new (NULL);
  gtk_label_set_markup (GTK_LABEL (label), "<b>List mode</b>");
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_box_pack_start (GTK_BOX (combo_vbox), label, FALSE, FALSE, 0);

  alignment = g_object_new (GTK_TYPE_ALIGNMENT, "left-padding", 12, NULL);
  gtk_box_pack_start (GTK_BOX (combo_vbox), alignment, FALSE, FALSE, 0);

  list_combo = create_combo ("list-combo", TRUE);
  gtk_container_add (GTK_CONTAINER (alignment), list_combo);

  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
  gtk_box_pack_start (GTK_BOX (hbox), scrolled_window, TRUE, TRUE, 0);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
				  GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);

  text_view = gtk_text_view_new ();
  gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
  gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);

  gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);

  button_vbox = gtk_vbox_new (FALSE, 8);
  gtk_box_pack_start (GTK_BOX (hbox), button_vbox, FALSE, FALSE, 0);
  
  gtk_window_set_default_size (GTK_WINDOW (dialog), 500, 300);

  button = align_button_new ("Insert");
  gtk_box_pack_start (GTK_BOX (button_vbox), button, FALSE, FALSE, 0);
  g_signal_connect (button, "clicked", G_CALLBACK (on_insert), NULL);
  
  button = align_button_new ("Delete");
  gtk_box_pack_start (GTK_BOX (button_vbox), button, FALSE, FALSE, 0);
  g_signal_connect (button, "clicked", G_CALLBACK (on_delete), NULL);

  button = align_button_new ("Reorder");
  gtk_box_pack_start (GTK_BOX (button_vbox), button, FALSE, FALSE, 0);
  g_signal_connect (button, "clicked", G_CALLBACK (on_reorder), NULL);

  gtk_widget_show_all (dialog);
  gtk_dialog_run (GTK_DIALOG (dialog));

  return 0;
}