648 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			648 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/* GTK - The GIMP Toolkit
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 *
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 * Copyright (C) 2003 Ricardo Fernandez Pascual
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 * Copyright (C) 2004 Paolo Borelli
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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 * Boston, MA 02111-1307, USA.
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 */
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#include "config.h"
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#include "gtkmenutoolbutton.h"
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#include "gtktogglebutton.h"
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#include "gtkarrow.h"
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#include "gtkhbox.h"
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#include "gtkvbox.h"
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#include "gtkmenu.h"
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#include "gtkmain.h"
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#include "gtksizerequest.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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struct _GtkMenuToolButtonPrivate
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{
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  GtkWidget *button;
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  GtkWidget *arrow;
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  GtkWidget *arrow_button;
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  GtkWidget *box;
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  GtkMenu   *menu;
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};
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static void gtk_menu_tool_button_destroy    (GtkWidget              *widget);
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static int  menu_deactivate_cb              (GtkMenuShell           *menu_shell,
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					     GtkMenuToolButton      *button);
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enum
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{
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  SHOW_MENU,
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  LAST_SIGNAL
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};
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enum
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{
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  PROP_0,
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  PROP_MENU
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};
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static gint signals[LAST_SIGNAL];
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G_DEFINE_TYPE (GtkMenuToolButton, gtk_menu_tool_button, GTK_TYPE_TOOL_BUTTON)
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static void
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gtk_menu_tool_button_construct_contents (GtkMenuToolButton *button)
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{
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  GtkMenuToolButtonPrivate *priv = button->priv;
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  GtkWidget *box;
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  GtkWidget *parent;
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  GtkOrientation orientation;
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  orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
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  if (orientation == GTK_ORIENTATION_HORIZONTAL)
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    {
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      box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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      gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_DOWN, GTK_SHADOW_NONE);
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    }
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  else
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    {
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      box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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      gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_RIGHT, GTK_SHADOW_NONE);
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    }
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  parent = gtk_widget_get_parent (priv->button);
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  if (priv->button && parent)
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    {
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      g_object_ref (priv->button);
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      gtk_container_remove (GTK_CONTAINER (parent),
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                            priv->button);
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      gtk_container_add (GTK_CONTAINER (box), priv->button);
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      g_object_unref (priv->button);
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    }
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  parent = gtk_widget_get_parent (priv->arrow_button);
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  if (priv->arrow_button && parent)
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    {
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      g_object_ref (priv->arrow_button);
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      gtk_container_remove (GTK_CONTAINER (parent),
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                            priv->arrow_button);
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      gtk_box_pack_end (GTK_BOX (box), priv->arrow_button,
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                        FALSE, FALSE, 0);
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      g_object_unref (priv->arrow_button);
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    }
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  if (priv->box)
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    {
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      gchar *tmp;
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      /* Transfer a possible tooltip to the new box */
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      g_object_get (priv->box, "tooltip-markup", &tmp, NULL);
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      if (tmp)
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        {
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	  g_object_set (box, "tooltip-markup", tmp, NULL);
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	  g_free (tmp);
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	}
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      /* Note: we are not destroying the button and the arrow_button
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       * here because they were removed from their container above
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       */
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      gtk_widget_destroy (priv->box);
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    }
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  priv->box = box;
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  gtk_container_add (GTK_CONTAINER (button), priv->box);
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  gtk_widget_show_all (priv->box);
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  gtk_button_set_relief (GTK_BUTTON (priv->arrow_button),
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			 gtk_tool_item_get_relief_style (GTK_TOOL_ITEM (button)));
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  gtk_widget_queue_resize (GTK_WIDGET (button));
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}
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static void
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gtk_menu_tool_button_toolbar_reconfigured (GtkToolItem *toolitem)
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{
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  gtk_menu_tool_button_construct_contents (GTK_MENU_TOOL_BUTTON (toolitem));
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  /* chain up */
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  GTK_TOOL_ITEM_CLASS (gtk_menu_tool_button_parent_class)->toolbar_reconfigured (toolitem);
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}
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static void
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gtk_menu_tool_button_state_changed (GtkWidget    *widget,
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				    GtkStateType  previous_state)
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{
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  GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (widget);
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  GtkMenuToolButtonPrivate *priv = button->priv;
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  if (!gtk_widget_is_sensitive (widget) && priv->menu)
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    {
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      gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
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    }
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}
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static void
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gtk_menu_tool_button_set_property (GObject      *object,
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                                   guint         prop_id,
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                                   const GValue *value,
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                                   GParamSpec   *pspec)
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{
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  GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
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  switch (prop_id)
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    {
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    case PROP_MENU:
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      gtk_menu_tool_button_set_menu (button, g_value_get_object (value));
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      break;
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    default:
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      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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      break;
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    }
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}
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static void
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gtk_menu_tool_button_get_property (GObject    *object,
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                                   guint       prop_id,
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                                   GValue     *value,
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                                   GParamSpec *pspec)
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{
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  GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
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  switch (prop_id)
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    {
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    case PROP_MENU:
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      g_value_set_object (value, button->priv->menu);
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      break;
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    default:
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      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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      break;
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    }
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}
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static void
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gtk_menu_tool_button_class_init (GtkMenuToolButtonClass *klass)
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{
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  GObjectClass *object_class;
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  GtkWidgetClass *widget_class;
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  GtkToolItemClass *toolitem_class;
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  object_class = (GObjectClass *)klass;
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  widget_class = (GtkWidgetClass *)klass;
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  toolitem_class = (GtkToolItemClass *)klass;
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  object_class->set_property = gtk_menu_tool_button_set_property;
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  object_class->get_property = gtk_menu_tool_button_get_property;
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  widget_class->destroy = gtk_menu_tool_button_destroy;
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  widget_class->state_changed = gtk_menu_tool_button_state_changed;
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  toolitem_class->toolbar_reconfigured = gtk_menu_tool_button_toolbar_reconfigured;
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  /**
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   * GtkMenuToolButton::show-menu:
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   * @button: the object on which the signal is emitted
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   *
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   * The ::show-menu signal is emitted before the menu is shown.
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   *
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   * It can be used to populate the menu on demand, using 
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   * gtk_menu_tool_button_get_menu(). 
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   * Note that even if you populate the menu dynamically in this way, 
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   * you must set an empty menu on the #GtkMenuToolButton beforehand,
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   * since the arrow is made insensitive if the menu is not set.
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   */
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  signals[SHOW_MENU] =
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    g_signal_new (I_("show-menu"),
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                  G_OBJECT_CLASS_TYPE (klass),
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                  G_SIGNAL_RUN_FIRST,
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                  G_STRUCT_OFFSET (GtkMenuToolButtonClass, show_menu),
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                  NULL, NULL,
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                  g_cclosure_marshal_VOID__VOID,
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                  G_TYPE_NONE, 0);
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  g_object_class_install_property (object_class,
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                                   PROP_MENU,
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                                   g_param_spec_object ("menu",
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                                                        P_("Menu"),
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                                                        P_("The dropdown menu"),
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                                                        GTK_TYPE_MENU,
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                                                        GTK_PARAM_READWRITE));
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  g_type_class_add_private (object_class, sizeof (GtkMenuToolButtonPrivate));
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}
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static void
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menu_position_func (GtkMenu           *menu,
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                    int               *x,
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                    int               *y,
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                    gboolean          *push_in,
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                    GtkMenuToolButton *button)
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{
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  GtkMenuToolButtonPrivate *priv = button->priv;
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  GtkAllocation arrow_allocation;
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  GtkWidget *widget = GTK_WIDGET (button);
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  GtkRequisition req;
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  GtkRequisition menu_req;
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  GtkOrientation orientation;
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  GtkTextDirection direction;
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  GdkRectangle monitor;
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  gint monitor_num;
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  GdkScreen *screen;
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  GdkWindow *window;
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  gtk_widget_get_preferred_size (GTK_WIDGET (priv->menu),
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                                 &menu_req, NULL);
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  orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
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  direction = gtk_widget_get_direction (widget);
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  window = gtk_widget_get_window (widget);
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  screen = gtk_widget_get_screen (GTK_WIDGET (menu));
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  monitor_num = gdk_screen_get_monitor_at_window (screen, window);
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  if (monitor_num < 0)
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    monitor_num = 0;
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  gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
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  if (orientation == GTK_ORIENTATION_HORIZONTAL)
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    {
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      GtkAllocation allocation;
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      gtk_widget_get_allocation (widget, &allocation);
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      gtk_widget_get_allocation (priv->arrow_button, &arrow_allocation);
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      gdk_window_get_origin (window, x, y);
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      *x += allocation.x;
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      *y += allocation.y;
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      if (direction == GTK_TEXT_DIR_LTR)
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	*x += MAX (allocation.width - menu_req.width, 0);
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      else if (menu_req.width > allocation.width)
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        *x -= menu_req.width - allocation.width;
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      if ((*y + arrow_allocation.height + menu_req.height) <= monitor.y + monitor.height)
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	*y += arrow_allocation.height;
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      else if ((*y - menu_req.height) >= monitor.y)
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	*y -= menu_req.height;
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      else if (monitor.y + monitor.height - (*y + arrow_allocation.height) > *y)
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	*y += arrow_allocation.height;
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      else
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	*y -= menu_req.height;
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    }
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  else 
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    {
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      gdk_window_get_origin (gtk_button_get_event_window (GTK_BUTTON (priv->arrow_button)), x, y);
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      gtk_widget_get_preferred_size (priv->arrow_button,
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                                     &req, NULL);
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      gtk_widget_get_allocation (priv->arrow_button, &arrow_allocation);
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      if (direction == GTK_TEXT_DIR_LTR)
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        *x += arrow_allocation.width;
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      else 
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        *x -= menu_req.width;
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      if (*y + menu_req.height > monitor.y + monitor.height &&
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	  *y + arrow_allocation.height - monitor.y > monitor.y + monitor.height - *y)
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	*y += arrow_allocation.height - menu_req.height;
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    }
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  *push_in = FALSE;
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}
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static void
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popup_menu_under_arrow (GtkMenuToolButton *button,
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                        GdkEventButton    *event)
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{
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  GtkMenuToolButtonPrivate *priv = button->priv;
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  g_signal_emit (button, signals[SHOW_MENU], 0);
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  if (!priv->menu)
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    return;
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  gtk_menu_popup (priv->menu, NULL, NULL,
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                  (GtkMenuPositionFunc) menu_position_func,
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                  button,
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                  event ? event->button : 0,
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                  event ? event->time : gtk_get_current_event_time ());
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}
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static void
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arrow_button_toggled_cb (GtkToggleButton   *togglebutton,
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                         GtkMenuToolButton *button)
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{
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  GtkMenuToolButtonPrivate *priv = button->priv;
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  if (!priv->menu)
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    return;
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  if (gtk_toggle_button_get_active (togglebutton) &&
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      !gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
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    {
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      /* we get here only when the menu is activated by a key
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       * press, so that we can select the first menu item */
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      popup_menu_under_arrow (button, NULL);
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      gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
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    }
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}
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static gboolean
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arrow_button_button_press_event_cb (GtkWidget         *widget,
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                                    GdkEventButton    *event,
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                                    GtkMenuToolButton *button)
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{
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  if (event->button == 1)
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    {
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      popup_menu_under_arrow (button, event);
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      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), TRUE);
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      return TRUE;
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    }
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  else
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    {
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      return FALSE;
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    }
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}
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static void
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gtk_menu_tool_button_init (GtkMenuToolButton *button)
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{
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  GtkWidget *box;
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  GtkWidget *arrow;
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  GtkWidget *arrow_button;
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  GtkWidget *real_button;
 | 
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  button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
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                                              GTK_TYPE_MENU_TOOL_BUTTON,
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                                              GtkMenuToolButtonPrivate);
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  gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (button), FALSE);
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  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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  real_button = gtk_bin_get_child (GTK_BIN (button));
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  g_object_ref (real_button);
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  gtk_container_remove (GTK_CONTAINER (button), real_button);
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  gtk_container_add (GTK_CONTAINER (box), real_button);
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  g_object_unref (real_button);
 | 
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 | 
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  arrow_button = gtk_toggle_button_new ();
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  arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
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  gtk_container_add (GTK_CONTAINER (arrow_button), arrow);
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  gtk_box_pack_end (GTK_BOX (box), arrow_button,
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                    FALSE, FALSE, 0);
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  /* the arrow button is insentive until we set a menu */
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  gtk_widget_set_sensitive (arrow_button, FALSE);
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  gtk_widget_show_all (box);
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  gtk_container_add (GTK_CONTAINER (button), box);
 | 
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  button->priv->button = real_button;
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  button->priv->arrow = arrow;
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  button->priv->arrow_button = arrow_button;
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  button->priv->box = box;
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  g_signal_connect (arrow_button, "toggled",
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		    G_CALLBACK (arrow_button_toggled_cb), button);
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  g_signal_connect (arrow_button, "button-press-event",
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		    G_CALLBACK (arrow_button_button_press_event_cb), button);
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}
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 | 
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static void
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gtk_menu_tool_button_destroy (GtkWidget *widget)
 | 
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{
 | 
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  GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (widget);
 | 
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 | 
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  if (button->priv->menu)
 | 
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    {
 | 
						|
      g_signal_handlers_disconnect_by_func (button->priv->menu, 
 | 
						|
					    menu_deactivate_cb, 
 | 
						|
					    button);
 | 
						|
      gtk_menu_detach (button->priv->menu);
 | 
						|
 | 
						|
      g_signal_handlers_disconnect_by_func (button->priv->arrow_button,
 | 
						|
					    arrow_button_toggled_cb, 
 | 
						|
					    button);
 | 
						|
      g_signal_handlers_disconnect_by_func (button->priv->arrow_button, 
 | 
						|
					    arrow_button_button_press_event_cb, 
 | 
						|
					    button);
 | 
						|
    }
 | 
						|
 | 
						|
  GTK_WIDGET_CLASS (gtk_menu_tool_button_parent_class)->destroy (widget);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_new:
 | 
						|
 * @icon_widget: (allow-none): a widget that will be used as icon widget, or %NULL
 | 
						|
 * @label: (allow-none): a string that will be used as label, or %NULL
 | 
						|
 *
 | 
						|
 * Creates a new #GtkMenuToolButton using @icon_widget as icon and
 | 
						|
 * @label as label.
 | 
						|
 *
 | 
						|
 * Return value: the new #GtkMenuToolButton
 | 
						|
 *
 | 
						|
 * Since: 2.6
 | 
						|
 **/
 | 
						|
GtkToolItem *
 | 
						|
gtk_menu_tool_button_new (GtkWidget   *icon_widget,
 | 
						|
                          const gchar *label)
 | 
						|
{
 | 
						|
  GtkMenuToolButton *button;
 | 
						|
 | 
						|
  button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON, NULL);
 | 
						|
 | 
						|
  if (label)
 | 
						|
    gtk_tool_button_set_label (GTK_TOOL_BUTTON (button), label);
 | 
						|
 | 
						|
  if (icon_widget)
 | 
						|
    gtk_tool_button_set_icon_widget (GTK_TOOL_BUTTON (button), icon_widget);
 | 
						|
 | 
						|
  return GTK_TOOL_ITEM (button);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_new_from_stock:
 | 
						|
 * @stock_id: the name of a stock item
 | 
						|
 *
 | 
						|
 * Creates a new #GtkMenuToolButton.
 | 
						|
 * The new #GtkMenuToolButton will contain an icon and label from
 | 
						|
 * the stock item indicated by @stock_id.
 | 
						|
 *
 | 
						|
 * Return value: the new #GtkMenuToolButton
 | 
						|
 *
 | 
						|
 * Since: 2.6
 | 
						|
 **/
 | 
						|
GtkToolItem *
 | 
						|
gtk_menu_tool_button_new_from_stock (const gchar *stock_id)
 | 
						|
{
 | 
						|
  GtkMenuToolButton *button;
 | 
						|
 | 
						|
  g_return_val_if_fail (stock_id != NULL, NULL);
 | 
						|
 | 
						|
  button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON,
 | 
						|
			 "stock-id", stock_id,
 | 
						|
			 NULL);
 | 
						|
 | 
						|
  return GTK_TOOL_ITEM (button);
 | 
						|
}
 | 
						|
 | 
						|
/* Callback for the "deactivate" signal on the pop-up menu.
 | 
						|
 * This is used so that we unset the state of the toggle button
 | 
						|
 * when the pop-up menu disappears. 
 | 
						|
 */
 | 
						|
static int
 | 
						|
menu_deactivate_cb (GtkMenuShell      *menu_shell,
 | 
						|
		    GtkMenuToolButton *button)
 | 
						|
{
 | 
						|
  GtkMenuToolButtonPrivate *priv = button->priv;
 | 
						|
 | 
						|
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE);
 | 
						|
 | 
						|
  return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
static void
 | 
						|
menu_detacher (GtkWidget *widget,
 | 
						|
               GtkMenu   *menu)
 | 
						|
{
 | 
						|
  GtkMenuToolButtonPrivate *priv = GTK_MENU_TOOL_BUTTON (widget)->priv;
 | 
						|
 | 
						|
  g_return_if_fail (priv->menu == menu);
 | 
						|
 | 
						|
  priv->menu = NULL;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_set_menu:
 | 
						|
 * @button: a #GtkMenuToolButton
 | 
						|
 * @menu: the #GtkMenu associated with #GtkMenuToolButton
 | 
						|
 *
 | 
						|
 * Sets the #GtkMenu that is popped up when the user clicks on the arrow.
 | 
						|
 * If @menu is NULL, the arrow button becomes insensitive.
 | 
						|
 *
 | 
						|
 * Since: 2.6
 | 
						|
 **/
 | 
						|
void
 | 
						|
gtk_menu_tool_button_set_menu (GtkMenuToolButton *button,
 | 
						|
                               GtkWidget         *menu)
 | 
						|
{
 | 
						|
  GtkMenuToolButtonPrivate *priv;
 | 
						|
 | 
						|
  g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
 | 
						|
  g_return_if_fail (GTK_IS_MENU (menu) || menu == NULL);
 | 
						|
 | 
						|
  priv = button->priv;
 | 
						|
 | 
						|
  if (priv->menu != GTK_MENU (menu))
 | 
						|
    {
 | 
						|
      if (priv->menu && gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
 | 
						|
        gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
 | 
						|
 | 
						|
      if (priv->menu)
 | 
						|
	{
 | 
						|
          g_signal_handlers_disconnect_by_func (priv->menu, 
 | 
						|
						menu_deactivate_cb, 
 | 
						|
						button);
 | 
						|
	  gtk_menu_detach (priv->menu);
 | 
						|
	}
 | 
						|
 | 
						|
      priv->menu = GTK_MENU (menu);
 | 
						|
 | 
						|
      if (priv->menu)
 | 
						|
        {
 | 
						|
          gtk_menu_attach_to_widget (priv->menu, GTK_WIDGET (button),
 | 
						|
                                     menu_detacher);
 | 
						|
 | 
						|
          gtk_widget_set_sensitive (priv->arrow_button, TRUE);
 | 
						|
 | 
						|
          g_signal_connect (priv->menu, "deactivate",
 | 
						|
                            G_CALLBACK (menu_deactivate_cb), button);
 | 
						|
        }
 | 
						|
      else
 | 
						|
       gtk_widget_set_sensitive (priv->arrow_button, FALSE);
 | 
						|
    }
 | 
						|
 | 
						|
  g_object_notify (G_OBJECT (button), "menu");
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_get_menu:
 | 
						|
 * @button: a #GtkMenuToolButton
 | 
						|
 *
 | 
						|
 * Gets the #GtkMenu associated with #GtkMenuToolButton.
 | 
						|
 *
 | 
						|
 * Return value: (transfer none): the #GtkMenu associated
 | 
						|
 *     with #GtkMenuToolButton
 | 
						|
 *
 | 
						|
 * Since: 2.6
 | 
						|
 **/
 | 
						|
GtkWidget *
 | 
						|
gtk_menu_tool_button_get_menu (GtkMenuToolButton *button)
 | 
						|
{
 | 
						|
  g_return_val_if_fail (GTK_IS_MENU_TOOL_BUTTON (button), NULL);
 | 
						|
 | 
						|
  return GTK_WIDGET (button->priv->menu);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_set_arrow_tooltip_text:
 | 
						|
 * @button: a #GtkMenuToolButton
 | 
						|
 * @text: text to be used as tooltip text for button's arrow button
 | 
						|
 *
 | 
						|
 * Sets the tooltip text to be used as tooltip for the arrow button which
 | 
						|
 * pops up the menu.  See gtk_tool_item_set_tooltip_text() for setting a tooltip
 | 
						|
 * on the whole #GtkMenuToolButton.
 | 
						|
 *
 | 
						|
 * Since: 2.12
 | 
						|
 **/
 | 
						|
void
 | 
						|
gtk_menu_tool_button_set_arrow_tooltip_text (GtkMenuToolButton *button,
 | 
						|
					     const gchar       *text)
 | 
						|
{
 | 
						|
  g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
 | 
						|
 | 
						|
  gtk_widget_set_tooltip_text (button->priv->arrow_button, text);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * gtk_menu_tool_button_set_arrow_tooltip_markup:
 | 
						|
 * @button: a #GtkMenuToolButton
 | 
						|
 * @markup: markup text to be used as tooltip text for button's arrow button
 | 
						|
 *
 | 
						|
 * Sets the tooltip markup text to be used as tooltip for the arrow button
 | 
						|
 * which pops up the menu.  See gtk_tool_item_set_tooltip_text() for setting a
 | 
						|
 * tooltip on the whole #GtkMenuToolButton.
 | 
						|
 *
 | 
						|
 * Since: 2.12
 | 
						|
 **/
 | 
						|
void
 | 
						|
gtk_menu_tool_button_set_arrow_tooltip_markup (GtkMenuToolButton *button,
 | 
						|
					       const gchar       *markup)
 | 
						|
{
 | 
						|
  g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
 | 
						|
 | 
						|
  gtk_widget_set_tooltip_markup (button->priv->arrow_button, markup);
 | 
						|
}
 |