gtkitemfactory.c

gtk是linux一款强大的夸平台的图形化开发工具

  guint len;

  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (ifactory->accel_group == NULL);
  g_return_if_fail (path != NULL);
  if (!gtk_type_is_a (container_type, GTK_TYPE_OPTION_MENU))
    g_return_if_fail (gtk_type_is_a (container_type, GTK_TYPE_MENU_SHELL));

  len = strlen (path);

  if (path[0] != '<' && path[len - 1] != '>')
    {
      g_warning ("GtkItemFactory: invalid factory path `%s'", path);
      return;
    }

  if (accel_group)
    {
      ifactory->accel_group = accel_group;
      gtk_accel_group_ref (ifactory->accel_group);
    }
  else
    ifactory->accel_group = gtk_accel_group_new ();

  ifactory->path = g_strdup (path);
  ifactory->widget =
    gtk_widget_new (container_type,
		    "GtkObject::signal::destroy", gtk_widget_destroyed, &ifactory->widget,
		    NULL);
  gtk_object_ref (GTK_OBJECT (ifactory));
  gtk_object_sink (GTK_OBJECT (ifactory));

  gtk_item_factory_add_item (ifactory,
			     "", NULL,
			     NULL, 0, NULL, 0,
			     ITEM_FACTORY_STRING,
			     ifactory->widget);
}

GtkItemFactory*
gtk_item_factory_from_path (const gchar      *path)
{
  GtkItemFactoryClass *class;
  GtkItemFactoryItem *item;
  gchar *fname;
  guint i;

  g_return_val_if_fail (path != NULL, NULL);
  g_return_val_if_fail (path[0] == '<', NULL);

  class = gtk_type_class (GTK_TYPE_ITEM_FACTORY);

  i = 0;
  while (path[i] && path[i] != '>')
    i++;
  if (path[i] != '>')
    {
      g_warning ("gtk_item_factory_from_path(): invalid factory path \"%s\"",
		 path);
      return NULL;
    }
  fname = g_new (gchar, i + 2);
  g_memmove (fname, path, i + 1);
  fname[i + 1] = 0;

  item = g_hash_table_lookup (class->item_ht, fname);

  g_free (fname);

  if (item && item->widgets)
    return gtk_item_factory_from_widget (item->widgets->data);

  return NULL;
}

static void
gtk_item_factory_destroy (GtkObject *object)
{
  GtkItemFactory *ifactory;
  GSList *slist;

  g_return_if_fail (object != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (object));

  ifactory = (GtkItemFactory*) object;

  if (ifactory->widget)
    {
      GtkObject *dobj;

      dobj = GTK_OBJECT (ifactory->widget);

      gtk_object_ref (dobj);
      gtk_object_sink (dobj);
      gtk_object_destroy (dobj);
      gtk_object_unref (dobj);

      ifactory->widget = NULL;
    }

  for (slist = ifactory->items; slist; slist = slist->next)
    {
      GtkItemFactoryItem *item = slist->data;
      GSList *link;
      
      for (link = item->widgets; link; link = link->next)
	if (gtk_object_get_data_by_id (link->data, quark_item_factory) == ifactory)
	  gtk_object_remove_data_by_id (link->data, quark_item_factory);
    }
  g_slist_free (ifactory->items);
  ifactory->items = NULL;

  parent_class->destroy (object);
}

static void
gtk_item_factory_finalize (GtkObject		  *object)
{
  GtkItemFactory *ifactory;

  g_return_if_fail (object != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (object));

  ifactory = GTK_ITEM_FACTORY (object);

  gtk_accel_group_unref (ifactory->accel_group);
  g_free (ifactory->path);
  g_assert (ifactory->widget == NULL);

  if (ifactory->translate_notify)
    ifactory->translate_notify (ifactory->translate_data);
  
  parent_class->finalize (object);
}

GtkItemFactory*
gtk_item_factory_from_widget (GtkWidget	       *widget)
{
  g_return_val_if_fail (widget != NULL, NULL);
  g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);

  return gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_item_factory);
}

gchar*
gtk_item_factory_path_from_widget (GtkWidget	    *widget)
{
  g_return_val_if_fail (widget != NULL, NULL);
  g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);

  return gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_item_path);
}

static void
gtk_item_factory_foreach (gpointer hash_key,
			  gpointer value,
			  gpointer user_data)
{
  GtkItemFactoryItem *item;
  GtkIFDumpData *data;
  gchar *string;
  gchar *name;
  gchar comment_prefix[2] = "\000\000";

  item = value;
  data = user_data;

  if (data->pspec && !gtk_pattern_match_string (data->pspec, item->path))
    return;

  comment_prefix[0] = gtk_item_factory_class->cpair_comment_single[0];

  name = gtk_accelerator_name (item->accelerator_key, item->accelerator_mods);
  string = g_strconcat (item->modified ? "" : comment_prefix,
			"(menu-path \"",
			hash_key,
			"\" \"",
			name,
			"\")",
			NULL);
  g_free (name);

  data->print_func (data->func_data, string);

  g_free (string);
}

void
gtk_item_factory_dump_items (GtkPatternSpec	 *path_pspec,
			     gboolean		  modified_only,
			     GtkPrintFunc	  print_func,
			     gpointer		  func_data)
{
  GtkIFDumpData data;

  g_return_if_fail (print_func != NULL);

  if (!gtk_item_factory_class)
    gtk_type_class (GTK_TYPE_ITEM_FACTORY);

  data.print_func = print_func;
  data.func_data = func_data;
  data.modified_only = (modified_only != FALSE);
  data.pspec = path_pspec;

  g_hash_table_foreach (gtk_item_factory_class->item_ht, gtk_item_factory_foreach, &data);
}

void
gtk_item_factory_print_func (gpointer FILE_pointer,
			     gchar   *string)
{
  FILE *f_out = FILE_pointer;

  g_return_if_fail (FILE_pointer != NULL);
  g_return_if_fail (string != NULL);
  
  fputs (string, f_out);
  fputc ('\n', f_out);
}

void
gtk_item_factory_dump_rc (const gchar            *file_name,
			  GtkPatternSpec         *path_pspec,
			  gboolean                modified_only)
{
  FILE *f_out;

  g_return_if_fail (file_name != NULL);

  f_out = fopen (file_name, "w");
  if (!f_out)
    return;

  fputs ("; ", f_out);
  if (g_get_prgname ())
    fputs (g_get_prgname (), f_out);
  fputs (" GtkItemFactory rc-file         -*- scheme -*-\n", f_out);
  fputs ("; this file is an automated menu-path dump\n", f_out);
  fputs (";\n", f_out);

  gtk_item_factory_dump_items (path_pspec,
			       modified_only,
			       gtk_item_factory_print_func,
			       f_out);

  fclose (f_out);
}

void
gtk_item_factory_create_items (GtkItemFactory	   *ifactory,
			       guint		    n_entries,
			       GtkItemFactoryEntry *entries,
			       gpointer		    callback_data)
{
  gtk_item_factory_create_items_ac (ifactory, n_entries, entries, callback_data, 1);
}

void
gtk_item_factory_create_items_ac (GtkItemFactory      *ifactory,
				  guint		       n_entries,
				  GtkItemFactoryEntry *entries,
				  gpointer	       callback_data,
				  guint		       callback_type)
{
  guint i;

  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (callback_type >= 1 && callback_type <= 2);

  if (n_entries == 0)
    return;

  g_return_if_fail (entries != NULL);

  for (i = 0; i < n_entries; i++)
    gtk_item_factory_create_item (ifactory, entries + i, callback_data, callback_type);
}

GtkWidget*
gtk_item_factory_get_widget (GtkItemFactory *ifactory,
			     const gchar    *path)
{
  GtkItemFactoryClass *class;
  GtkItemFactoryItem *item;

  g_return_val_if_fail (GTK_IS_ITEM_FACTORY (ifactory), NULL);
  g_return_val_if_fail (path != NULL, NULL);

  class = GTK_ITEM_FACTORY_CLASS (GTK_OBJECT (ifactory)->klass);

  if (path[0] == '<')
    item = g_hash_table_lookup (class->item_ht, (gpointer) path);
  else
    {
      gchar *fpath;

      fpath = g_strconcat (ifactory->path, path, NULL);
      item = g_hash_table_lookup (class->item_ht, fpath);
      g_free (fpath);
    }

  if (item)
    {
      GSList *slist;

      for (slist = item->widgets; slist; slist = slist->next)
	{
	  if (gtk_item_factory_from_widget (slist->data) == ifactory)
	    return slist->data;
	}
    }

  return NULL;
}

GtkWidget*
gtk_item_factory_get_widget_by_action (GtkItemFactory *ifactory,
				       guint	       action)
{
  GSList *slist;

  g_return_val_if_fail (GTK_IS_ITEM_FACTORY (ifactory), NULL);

  for (slist = ifactory->items; slist; slist = slist->next)
    {
      GtkItemFactoryItem *item = slist->data;
      GSList *link;

      for (link = item->widgets; link; link = link->next)
	if (gtk_object_get_data_by_id (link->data, quark_item_factory) == ifactory &&
	    gtk_object_get_data_by_id (link->data, quark_action) == GUINT_TO_POINTER (action))
	  return link->data;
    }

  return NULL;
}

GtkWidget*
gtk_item_factory_get_item (GtkItemFactory *ifactory,
			   const gchar    *path)
{
  GtkWidget *widget;

  g_return_val_if_fail (GTK_IS_ITEM_FACTORY (ifactory), NULL);
  g_return_val_if_fail (path != NULL, NULL);

  widget = gtk_item_factory_get_widget (ifactory, path);

  if (GTK_IS_MENU (widget))
    widget = gtk_menu_get_attach_widget (GTK_MENU (widget));

  return GTK_IS_ITEM (widget) ? widget : NULL;
}

GtkWidget*
gtk_item_factory_get_item_by_action (GtkItemFactory *ifactory,
				     guint	     action)
{
  GtkWidget *widget;

  g_return_val_if_fail (GTK_IS_ITEM_FACTORY (ifactory), NULL);

  widget = gtk_item_factory_get_widget_by_action (ifactory, action);

  if (GTK_IS_MENU (widget))
    widget = gtk_menu_get_attach_widget (GTK_MENU (widget));

  return GTK_IS_ITEM (widget) ? widget : NULL;
}

static gboolean
gtk_item_factory_parse_path (GtkItemFactory *ifactory,
			     gchar          *str,
			     gchar         **path,
			     gchar         **parent_path,
			     gchar         **item)
{
  gchar *translation;
  gchar *p, *q;

  *path = g_strdup (str);

  p = q = *path;
  while (*p)
    {
      if (*p != '_')
	{
	  *q++ = *p;
	}
      p++;
    }
  *q = 0;

  *parent_path = g_strdup (*path);
  p = strrchr (*parent_path, '/');
  if (!p)
    {
      g_warning ("GtkItemFactory: invalid entry path `%s'", str);
      return FALSE;
    }
  *p = 0;

  if (ifactory->translate_func)
    translation = ifactory->translate_func (str, ifactory->translate_data);
  else
    translation = str;
			      
  p = strrchr (translation, '/');
  p++;

  *item = g_strdup (p);

  return TRUE;
}

void
gtk_item_factory_create_item (GtkItemFactory	     *ifactory,
			      GtkItemFactoryEntry    *entry,
			      gpointer		      callback_data,
			      guint		      callback_type)
{
  GtkOptionMenu *option_menu = NULL;
  GtkWidget *parent;
  GtkWidget *widget;
  GSList *radio_group;
  gchar *name;
  gchar *parent_path;
  gchar *path;
  guint accel_key;
  guint type_id;
  GtkType type;
  gchar *item_type_path;

  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (entry != NULL);
  g_return_if_fail (entry->path != NULL);
  g_return_if_fail (entry->path[0] == '/');
  g_return_if_fail (callback_type >= 1 && callback_type <= 2);

  if (!entry->item_type ||
      entry->item_type[0] == 0)
    {
      item_type_path = "<Item>";
      type_id = quark_type_item;
    }
  else
    {
      item_type_path = entry->item_type;
      type_id = gtk_object_data_try_key (item_type_path);
    }

  radio_group = NULL;
  if (type_id == quark_type_item)
    type = GTK_TYPE_MENU_ITEM;
  else if (type_id == quark_type_title)
    type = GTK_TYPE_MENU_ITEM;
  else if (type_id == quark_type_radio_item)
    type = GTK_TYPE_RADIO_MENU_ITEM;
  else if (type_id == quark_type_check_item)
    type = GTK_TYPE_CHECK_MENU_ITEM;
  else if (type_id == quark_type_tearoff_item)
    type = GTK_TYPE_TEAROFF_MENU_ITEM;
  else if (type_id == quark_type_toggle_item)
    type = GTK_TYPE_CHECK_MENU_ITEM;
  else if (type_id == quark_type_separator_item)
    type = GTK_TYPE_MENU_ITEM;
  else if (type_id == quark_type_branch)
    type = GTK_TYPE_MENU_ITEM;
  else if (type_id == quark_type_last_branch)
    type = GTK_TYPE_MENU_ITEM;
  else
    {
      GtkWidget *radio_link;

      radio_link = gtk_item_factory_get_widget (ifactory, item_type_path);
      if (radio_link && GTK_IS_RADIO_MENU_ITEM (radio_link))
	{
	  type = GTK_TYPE_RADIO_MENU_ITEM;
	  radio_group = gtk_radio_menu_item_group (GTK_RADIO_MENU_ITEM (radio_link));
	}
      else
	{
	  g_warning ("GtkItemFactory: entry path `%s' has invalid type `%s'",
		     entry->path,
		     item_type_path);
	  return;
	}
    }

  if (!gtk_item_factory_parse_path (ifactory, entry->path, 
				    &path, &parent_path, &name))
    return;

  parent = gtk_item_factory_get_widget (ifactory, parent_path);
  if (!parent)
    {
      GtkItemFactoryEntry pentry;
      gchar *ppath, *p;

      ppath = g_strdup (entry->path);
      p = strrchr (ppath, '/');
      g_return_if_fail (p != NULL);
      *p = 0;
      pentry.path = ppath;
      pentry.accelerator = NULL;
      pentry.callback = NULL;
      pentry.callback_action = 0;
      pentry.item_type = "<Branch>";

      gtk_item_factory_create_item (ifactory, &pentry, NULL, 1);
      g_free (ppath);

      parent = gtk_item_factory_get_widget (ifactory, parent_path);
      g_return_if_fail (parent != NULL);
    }
  g_free (parent_path);

  if (GTK_IS_OPTION_MENU (parent))
    {
      option_menu = GTK_OPTION_MENU (parent);
      if (!option_menu->menu)
	gtk_option_menu_set_menu (option_menu, gtk_widget_new (GTK_TYPE_MENU, NULL));
      parent = option_menu->menu;
    }
			      
  g_return_if_fail (GTK_IS_CONTAINER (parent));

  widget = gtk_widget_new (type,
			   "GtkWidget::visible", TRUE,
			   "GtkWidget::sensitive", (type_id != quark_type_separator_item &&
						    type_id != quark_type_title),
			   "GtkWidget::parent", parent,
			   NULL);
  if (option_menu && !option_menu->menu_item)
    gtk_option_menu_set_history (option_menu, 0);

  if (type == GTK_TYPE_RADIO_MENU_ITEM)
    gtk_radio_menu_item_set_group (GTK_RADIO_MENU_ITEM (widget), radio_group);
  if (GTK_IS_CHECK_MENU_ITEM (widget))
    gtk_check_menu_item_set_show_toggle (GTK_CHECK_MENU_ITEM (widget), TRUE);

  /* install underline accelerators for this item
   */
  if (type_id != quark_type_separator_item && 
      type_id != quark_type_tearoff_item &&
      *name)
    {
      GtkWidget *label;
      
      label = gtk_widget_new (GTK_TYPE_ACCEL_LABEL,
			      "GtkWidget::visible", TRUE,
			      "GtkWidget::parent", widget,
			      "GtkAccelLabel::accel_widget", widget,
			      "GtkMisc::xalign", 0.0,
			      NULL);