gtkitemfactory.c

gtk是linux一款强大的夸平台的图形化开发工具

      
      accel_key = gtk_label_parse_uline (GTK_LABEL (label), name);
      
      if (accel_key != GDK_VoidSymbol)
	{
	  if (GTK_IS_MENU_BAR (parent))
	    gtk_widget_add_accelerator (widget,
					"activate_item",
					ifactory->accel_group,
					accel_key, GDK_MOD1_MASK,
					GTK_ACCEL_LOCKED);

	  if (GTK_IS_MENU (parent))
	    gtk_widget_add_accelerator (widget,
					"activate_item",
					gtk_menu_ensure_uline_accel_group (GTK_MENU (parent)),
					accel_key, 0,
					GTK_ACCEL_LOCKED);
	}
    }
  
  g_free (name);
  
  if (type_id == quark_type_branch ||
      type_id == quark_type_last_branch)
    {
      if (entry->callback)
	g_warning ("gtk_item_factory_create_item(): Can't specify a callback on a branch: \"%s\"",
		   entry->path);
      
      if (type_id == quark_type_last_branch)
	gtk_menu_item_right_justify (GTK_MENU_ITEM (widget));
      
      parent = widget;
      widget = gtk_widget_new (GTK_TYPE_MENU,
			       NULL);
      
      gtk_menu_item_set_submenu (GTK_MENU_ITEM (parent), widget);
    }	   
  
  gtk_item_factory_add_item (ifactory,
			     path, entry->accelerator,
			     (type_id == quark_type_branch ||
			      type_id == quark_type_last_branch) ?
			      (GtkItemFactoryCallback) NULL : entry->callback,
			     entry->callback_action, callback_data,
			     callback_type,
			     item_type_path,
			     widget);

  g_free (path);
}

void
gtk_item_factory_create_menu_entries (guint              n_entries,
				      GtkMenuEntry      *entries)
{
  static GtkPatternSpec pspec_separator = { 42, 0 };
  static GtkPatternSpec pspec_check = { 42, 0 };
  guint i;

  if (!n_entries)
    return;
  g_return_if_fail (entries != NULL);

  if (pspec_separator.pattern_length == 0)
    {
      gtk_pattern_spec_init (&pspec_separator, "*<separator>*");
      gtk_pattern_spec_init (&pspec_check, "*<check>*");
    }

  for (i = 0; i < n_entries; i++)
    {
      GtkItemFactory *ifactory;
      GtkItemFactoryEntry entry;
      gchar *path;
      gchar *cpath;

      path = entries[i].path;
      ifactory = gtk_item_factory_from_path (path);
      if (!ifactory)
	{
	  g_warning ("gtk_item_factory_create_menu_entries(): "
		     "entry[%u] refers to unknown item factory: \"%s\"",
		     i, entries[i].path);
	  continue;
	}

      while (*path != '>')
	path++;
      path++;
      cpath = NULL;

      entry.path = path;
      entry.accelerator = entries[i].accelerator;
      entry.callback = entries[i].callback;
      entry.callback_action = 0;
      if (gtk_pattern_match_string (&pspec_separator, path))
	entry.item_type = "<Separator>";
      else if (!gtk_pattern_match_string (&pspec_check, path))
	entry.item_type = NULL;
      else
	{
	  gboolean in_brace = FALSE;
	  gchar *c;
	  
	  cpath = g_new (gchar, strlen (path));
	  c = cpath;
	  while (*path != 0)
	    {
	      if (*path == '<')
		in_brace = TRUE;
	      else if (*path == '>')
		in_brace = FALSE;
	      else if (!in_brace)
		*(c++) = *path;
	      path++;
	    }
	  *c = 0;
	  entry.item_type = "<ToggleItem>";
	  entry.path = cpath;
	}
      
      gtk_item_factory_create_item (ifactory, &entry, entries[i].callback_data, 2);
      entries[i].widget = gtk_item_factory_get_widget (ifactory, entries[i].path);
      g_free (cpath);
    }
}

void
gtk_item_factories_path_delete (const gchar *ifactory_path,
				const gchar *path)
{
  GtkItemFactoryClass *class;
  GtkItemFactoryItem *item;

  g_return_if_fail (path != NULL);

  class = gtk_type_class (GTK_TYPE_ITEM_FACTORY);

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

      g_return_if_fail (ifactory_path != NULL);
      
      fpath = g_strconcat (ifactory_path, path, NULL);
      item = g_hash_table_lookup (class->item_ht, fpath);
      g_free (fpath);
    }
  
  if (item)
    {
      GSList *widget_list;
      GSList *slist;

      widget_list = NULL;
      for (slist = item->widgets; slist; slist = slist->next)
	{
	  GtkWidget *widget;

	  widget = slist->data;
	  widget_list = g_slist_prepend (widget_list, widget);
	  gtk_widget_ref (widget);
	}

      for (slist = widget_list; slist; slist = slist->next)
	{
	  GtkWidget *widget;

	  widget = slist->data;
	  gtk_widget_destroy (widget);
	  gtk_widget_unref (widget);
	}
      g_slist_free (widget_list);
    }
}

void
gtk_item_factory_delete_item (GtkItemFactory         *ifactory,
			      const gchar            *path)
{
  GtkItemFactoryClass *class;
  GtkItemFactoryItem *item;
  gchar *fpath;

  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (path != NULL);

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

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

  if (item)
    {
      GtkWidget *widget = NULL;
      GSList *slist;

      for (slist = item->widgets; slist; slist = slist->next)
	{
	  widget = slist->data;

	  if (gtk_item_factory_from_widget (widget) == ifactory)
	    break;
	}

      if (slist)
	gtk_widget_destroy (widget);
    }
}

void
gtk_item_factory_delete_entry (GtkItemFactory         *ifactory,
			       GtkItemFactoryEntry    *entry)
{
  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (entry != NULL);

  gtk_item_factory_delete_item (ifactory, entry->path);
}

void
gtk_item_factory_delete_entries (GtkItemFactory         *ifactory,
				 guint                   n_entries,
				 GtkItemFactoryEntry    *entries)
{
  guint i;

  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  if (n_entries > 0)
    g_return_if_fail (entries != NULL);

  for (i = 0; i < n_entries; i++)
    gtk_item_factory_delete_item (ifactory, (entries + i)->path);
}

typedef struct
{
  guint x;
  guint y;
} MenuPos;

static void
gtk_item_factory_menu_pos (GtkMenu  *menu,
			   gint     *x,
			   gint     *y,
			   gpointer  func_data)
{
  MenuPos *mpos = func_data;

  *x = mpos->x;
  *y = mpos->y;
}

gpointer
gtk_item_factory_popup_data_from_widget (GtkWidget     *widget)
{
  GtkItemFactory *ifactory;
  
  g_return_val_if_fail (widget != NULL, NULL);
  g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);

  ifactory = gtk_item_factory_from_widget (widget);
  if (ifactory)
    return gtk_object_get_data_by_id (GTK_OBJECT (ifactory), quark_popup_data);

  return NULL;
}

gpointer
gtk_item_factory_popup_data (GtkItemFactory *ifactory)
{
  g_return_val_if_fail (ifactory != NULL, NULL);
  g_return_val_if_fail (GTK_IS_ITEM_FACTORY (ifactory), NULL);

  return gtk_object_get_data_by_id (GTK_OBJECT (ifactory), quark_popup_data);
}

static void
ifactory_delete_popup_data (GtkObject	   *object,
			    GtkItemFactory *ifactory)
{
  gtk_signal_disconnect_by_func (object,
				 GTK_SIGNAL_FUNC (ifactory_delete_popup_data),
				 ifactory);
  gtk_object_remove_data_by_id (GTK_OBJECT (ifactory), quark_popup_data);
}

void
gtk_item_factory_popup (GtkItemFactory		*ifactory,
			guint			 x,
			guint			 y,
			guint			 mouse_button,
			guint32			 time)
{
  gtk_item_factory_popup_with_data (ifactory, NULL, NULL, x, y, mouse_button, time);
}

void
gtk_item_factory_popup_with_data (GtkItemFactory	*ifactory,
				  gpointer		 popup_data,
				  GtkDestroyNotify	 destroy,
				  guint			 x,
				  guint			 y,
				  guint			 mouse_button,
				  guint32		 time)
{
  g_return_if_fail (ifactory != NULL);
  g_return_if_fail (GTK_IS_ITEM_FACTORY (ifactory));
  g_return_if_fail (GTK_IS_MENU (ifactory->widget));

  if (!GTK_WIDGET_VISIBLE (ifactory->widget))
    {
      MenuPos *mpos;

      mpos = gtk_object_get_data_by_id (GTK_OBJECT (ifactory->widget), quark_if_menu_pos);

      if (!mpos)
	{
	  mpos = g_new0 (MenuPos, 1);
	  gtk_object_set_data_by_id_full (GTK_OBJECT (ifactory->widget),
					  quark_if_menu_pos,
					  mpos,
					  g_free);
	}

      mpos->x = x;
      mpos->y = y;

      if (popup_data != NULL)
	{
	  gtk_object_set_data_by_id_full (GTK_OBJECT (ifactory),
					  quark_popup_data,
					  popup_data,
					  destroy);
	  gtk_signal_connect (GTK_OBJECT (ifactory->widget),
			      "selection-done",
			      GTK_SIGNAL_FUNC (ifactory_delete_popup_data),
			      ifactory);
	}

      gtk_menu_popup (GTK_MENU (ifactory->widget),
		      NULL, NULL,
		      gtk_item_factory_menu_pos, mpos,
		      mouse_button, time);
    }
}

static guint
gtk_item_factory_parse_menu_path (GScanner            *scanner,
				  GtkItemFactoryClass *class)
{
  GtkItemFactoryItem *item;
  
  g_scanner_get_next_token (scanner);
  if (scanner->token != G_TOKEN_STRING)
    return G_TOKEN_STRING;

  g_scanner_peek_next_token (scanner);
  if (scanner->next_token != G_TOKEN_STRING)
    {
      g_scanner_get_next_token (scanner);
      return G_TOKEN_STRING;
    }

  item = g_hash_table_lookup (class->item_ht, scanner->value.v_string);
  if (!item)
    {
      item = g_chunk_new (GtkItemFactoryItem, ifactory_item_chunks);

      item->path = g_strdup (scanner->value.v_string);
      item->accelerator_key = 0;
      item->accelerator_mods = 0;
      item->modified = TRUE;
      item->in_propagation = FALSE;
      item->dummy = NULL;
      item->widgets = NULL;

      g_hash_table_insert (class->item_ht, item->path, item);
    }
  g_scanner_get_next_token (scanner);
  
  if (!item->in_propagation)
    {
      guint old_keyval;
      guint old_mods;
      
      old_keyval = item->accelerator_key;
      old_mods = item->accelerator_mods;
      gtk_accelerator_parse (scanner->value.v_string,
			     &item->accelerator_key,
			     &item->accelerator_mods);
      if (old_keyval != item->accelerator_key ||
	  old_mods != item->accelerator_mods)
	{
	  item->modified = TRUE;
	  gtk_item_factory_propagate_accelerator (item, NULL);
	}
    }
  
  g_scanner_get_next_token (scanner);
  if (scanner->token != ')')
    return ')';
  else
    return G_TOKEN_NONE;
}

static void
gtk_item_factory_parse_statement (GScanner            *scanner,
				  GtkItemFactoryClass *class)
{
  guint expected_token;
  
  g_scanner_get_next_token (scanner);
  
  if (scanner->token == G_TOKEN_SYMBOL)
    {
      guint (*parser_func) (GScanner*, GtkItemFactoryClass*);

      parser_func = scanner->value.v_symbol;

      /* check whether this is a GtkItemFactory symbol.
       */
      if (parser_func == gtk_item_factory_parse_menu_path)
	expected_token = parser_func (scanner, class);
      else
	expected_token = G_TOKEN_SYMBOL;
    }
  else
    expected_token = G_TOKEN_SYMBOL;

  /* skip rest of statement on errrors
   */
  if (expected_token != G_TOKEN_NONE)
    {
      register guint level;

      level = 1;
      if (scanner->token == ')')
	level--;
      if (scanner->token == '(')
	level++;
      
      while (!g_scanner_eof (scanner) && level > 0)
	{
	  g_scanner_get_next_token (scanner);
	  
	  if (scanner->token == '(')
	    level++;
	  else if (scanner->token == ')')
	    level--;
	}
    }
}

void
gtk_item_factory_parse_rc_string (const gchar	 *rc_string)
{
  GScanner *scanner;

  g_return_if_fail (rc_string != NULL);

  if (!gtk_item_factory_class)
    gtk_type_class (GTK_TYPE_ITEM_FACTORY);

  ifactory_scanner_config.cpair_comment_single = gtk_item_factory_class->cpair_comment_single;
  scanner = g_scanner_new (&ifactory_scanner_config);

  g_scanner_input_text (scanner, rc_string, strlen (rc_string));

  gtk_item_factory_parse_rc_scanner (scanner);

  g_scanner_destroy (scanner);
}

void
gtk_item_factory_parse_rc_scanner (GScanner *scanner)
{
  gpointer saved_symbol;

  g_return_if_fail (scanner != NULL);

  if (!gtk_item_factory_class)
    gtk_type_class (GTK_TYPE_ITEM_FACTORY);

  saved_symbol = g_scanner_lookup_symbol (scanner, "menu-path");
  g_scanner_remove_symbol (scanner, "menu-path");
  g_scanner_add_symbol (scanner, "menu-path", gtk_item_factory_parse_menu_path);

  g_scanner_peek_next_token (scanner);

  while (scanner->next_token == '(')
    {
      g_scanner_get_next_token (scanner);

      gtk_item_factory_parse_statement (scanner, gtk_item_factory_class);

      g_scanner_peek_next_token (scanner);
    }

  g_scanner_remove_symbol (scanner, "menu-path");
  g_scanner_add_symbol (scanner, "menu-path", saved_symbol);
}

void
gtk_item_factory_parse_rc (const gchar	  *file_name)
{
  gint fd;
  GScanner *scanner;

  g_return_if_fail (file_name != NULL);

  if (!S_ISREG (g_scanner_stat_mode (file_name)))
    return;

  fd = open (file_name, O_RDONLY);
  if (fd < 0)
    return;

  if (!gtk_item_factory_class)
    gtk_type_class (GTK_TYPE_ITEM_FACTORY);

  ifactory_scanner_config.cpair_comment_single = gtk_item_factory_class->cpair_comment_single;
  scanner = g_scanner_new (&ifactory_scanner_config);

  g_scanner_input_file (scanner, fd);

  gtk_item_factory_parse_rc_scanner (scanner);

  g_scanner_destroy (scanner);

  close (fd);
}

void
gtk_item_factory_set_translate_func (GtkItemFactory      *ifactory,
				     GtkTranslateFunc     func,
				     gpointer             data,
				     GtkDestroyNotify     notify)
{
  g_return_if_fail (ifactory != NULL);
  
  if (ifactory->translate_notify)
    ifactory->translate_notify (ifactory->translate_data);
      
  ifactory->translate_func = func;
  ifactory->translate_data = data;
  ifactory->translate_notify = notify;
}