path: root/libs/gtkmm2/gtk/gtkmm/menu.h

// -*- c++ -*-
// Generated by gtkmmproc -- DO NOT MODIFY!
#ifndef _GTKMM_MENU_H
#define _GTKMM_MENU_H

#include <glibmm.h>

/* $Id$ */

/* Copyright (C) 1998-2002 The gtkmm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


//#include <gtk/gtkmenu.h>
#include <gtkmm/menushell.h>
#include <gtkmm/menuitem.h>

#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GtkMenu GtkMenu;
typedef struct _GtkMenuClass GtkMenuClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


namespace Gtk
{ class Menu_Class; } // namespace Gtk
namespace Gtk
{

class AccelGroup;

/** @defgroup Menus Menu classes
 */

/** A drop-down menu consisting of Gtk::MenuItem objects which can be navigated and activated by the user to perform application functions.
 * Menus are normally placed inside a Gtk::MenuBar or another MenuItem as a sub menu.
 * A Menu can also be popped up, for instance as a right-click context menu, by calling the popup() method.
 * See also Gtk::OptionMenu.
 * @ingroup Widgets
 * @ingroup Menus
 */

class Menu : public MenuShell
{
  public:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
  typedef Menu CppObjectType;
  typedef Menu_Class CppClassType;
  typedef GtkMenu BaseObjectType;
  typedef GtkMenuClass BaseClassType;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

  virtual ~Menu();

#ifndef DOXYGEN_SHOULD_SKIP_THIS

private:
  friend class Menu_Class;
  static CppClassType menu_class_;

  // noncopyable
  Menu(const Menu&);
  Menu& operator=(const Menu&);

protected:
  explicit Menu(const Glib::ConstructParams& construct_params);
  explicit Menu(GtkMenu* castitem);

#endif /* DOXYGEN_SHOULD_SKIP_THIS */

public:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
  static GType get_type()      G_GNUC_CONST;
  static GType get_base_type() G_GNUC_CONST;
#endif

  ///Provides access to the underlying C GtkObject.
  GtkMenu*       gobj()       { return reinterpret_cast<GtkMenu*>(gobject_); }

  ///Provides access to the underlying C GtkObject.
  const GtkMenu* gobj() const { return reinterpret_cast<GtkMenu*>(gobject_); }


public:
  //C++ methods used to invoke GTK+ virtual functions:

protected:
  //GTK+ Virtual Functions (override these to change behaviour):

  //Default Signal Handlers::


private:

  
   //deprecated.
public:
  Menu();

/* append, prepend, and insert are defined in MenuShell */

  /** For instance,
   * void on_popup_menu_position(int& x, int& y, bool& push_in);
   */
  typedef sigc::slot<void, int&, int&, bool&> SlotPositionCalc;
             
  void popup(MenuShell& parent_menu_shell, MenuItem& parent_menu_item, const SlotPositionCalc& slot, guint button, guint32 activate_time);
  

  /** Displays a menu and makes it available for selection.  Applications can use
   * this function to display context-sensitive menus.
   *
   * The @a button  parameter should be the mouse button pressed to initiate
   * the menu popup. If the menu popup was initiated by something other than
   * a mouse button press, such as a mouse button release or a keypress,
   *  @a button  should be 0.
   *
   * The @a activate_time  parameter should be the time stamp of the event that
   * initiated the popup. If such an event is not available, use
   * gtk_get_current_event_time() instead.
   * @param func A position_calc_slot supplied function used to position the menu, or <tt>0</tt>.
   * @param button The mouse button which was pressed to initiate the event.
   * @param activate_time The time at which the activation event occurred.
   */
  void popup(const SlotPositionCalc& position_calc_slot, guint button, guint32 activate_time);

  /** Displays a menu and makes it available for selection.
   * Applications can use this function to display context-sensitive menus, at the current pointer position.
   * @param button The button which was pressed to initiate the event.
   * @param activate_time The time at which the activation event occurred.
   */
  void popup(guint button, guint32 activate_time);

  
  void reposition();

  
  void popdown();

  
  MenuItem* get_active();
  
  const MenuItem* get_active() const;
  
  void set_active(guint index);

  
  void set_accel_group(const Glib::RefPtr<AccelGroup>& accel_group);
  void unset_accel_group();
  
  Glib::RefPtr<AccelGroup> get_accel_group();
  
  Glib::RefPtr<const AccelGroup> get_accel_group() const;
  
  
  /** Sets an accelerator path for this menu from which accelerator paths
   * for its immediate children, its menu items, can be constructed.
   * The main purpose of this function is to spare the programmer the
   * inconvenience of having to call Gtk::MenuItem::set_accel_path() on
   * each menu item that should support runtime user changable accelerators.
   * Instead, by just calling set_accel_path() on their parent,
   * each menu item of this menu, that contains a label describing its purpose,
   * automatically gets an accel path assigned. For example, a menu containing
   * menu items "New" and "Exit", will, after 
   * <tt>gtk_menu_set_accel_path (menu, "&lt;Gnumeric-Sheet&gt;/File");</tt>
   * has been called, assign its items the accel paths:
   * <tt>"&lt;Gnumeric-Sheet&gt;/File/New"</tt> and <tt>"&lt;Gnumeric-Sheet&gt;/File/Exit"</tt>.
   * Assigning accel paths to menu items then enables the user to change
   * their accelerators at runtime. More details about accelerator paths
   * and their default setups can be found at gtk_accel_map_add_entry().
   * @param accel_path A valid accelerator path.
   */
  void set_accel_path(const Glib::ustring& accel_path);

  
  void detach();
  
  Widget* get_attach_widget();
  
  const Widget* get_attach_widget() const;

  
  void set_tearoff_state(bool torn_off = true);
  
  /** Returns whether the menu is torn off. See
   * set_tearoff_state().
   * @return <tt>true</tt> if the menu is currently torn off.
   */
  bool get_tearoff_state() const;

  
  /** Sets the title string for the menu.  The title is displayed when the menu
   * is shown as a tearoff menu.
   * @param title A string containing the title for the menu.
   */
  void set_title(const Glib::ustring& title);
  void unset_title();
  
  /** Returns the title of the menu. See set_title().
   * @return The title of the menu, or <tt>0</tt> if the menu has no
   * title set on it. This string is owned by the widget and should
   * not be modified or freed.
   */
  Glib::ustring get_title() const;
  
  /** Sets the Gdk::Screen on which the menu will be displayed.
   * 
   * Since: 2.2
   * @param screen A Gdk::Screen, or <tt>0</tt> if the screen should be
   * determined by the widget the menu is attached to.
   */
  void set_screen(const Glib::RefPtr<Gdk::Screen>& screen);

  
  /** Adds a new Gtk::MenuItem to a (table) menu. The number of 'cells' that
   * an item will occupy is specified by @a left_attach , @a right_attach ,
   *  @a top_attach  and @a bottom_attach . These each represent the leftmost,
   * rightmost, uppermost and lower column and row numbers of the table.
   * (Columns and rows are indexed from zero).
   * 
   * Note that this function is not related to detach().
   * 
   * Since: 2.4
   * @param child A Gtk::MenuItem.
   * @param left_attach The column number to attach the left side of the item to.
   * @param right_attach The column number to attach the right side of the item to.
   * @param top_attach The row number to attach the top of the item to.
   * @param bottom_attach The row number to attach the bottom of the item to.
   */
  void attach(Gtk::Widget& child, guint left_attach, guint right_attach, guint top_attach, guint bottom_attach);

  
  /** Informs GTK+ on which monitor a menu should be popped up. 
   * See gdk_screen_get_monitor_geometry().
   * 
   * This function should be called from a Gtk::MenuPositionFunc if the
   * menu should not appear on the same monitor as the pointer. This 
   * information can't be reliably inferred from the coordinates returned
   * by a Gtk::MenuPositionFunc, since, for very long menus, these coordinates 
   * may extend beyond the monitor boundaries or even the screen boundaries. 
   * 
   * Since: 2.4
   * @param monitor_num The number of the monitor on which the menu should
   * be popped up.
   */
  void set_monitor(int monitor_num);
  
  void reorder_child(const MenuItem& child, int position);
  

  /** A title that may be displayed by the window manager when this menu is torn-off.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy that allows you to get or set the property of the value, or receive notification when
   * the value of the property changes.
   */
  Glib::PropertyProxy<Glib::ustring> property_tearoff_title() ;

/** A title that may be displayed by the window manager when this menu is torn-off.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy that allows you to get or set the property of the value, or receive notification when
   * the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly<Glib::ustring> property_tearoff_title() const;


protected:

  //We can not wrap this as a slot because there is no data parameter, and no destroy callback to destroy that data.
  typedef void (*GtkMenuDetachFunc)   (GtkWidget *attach_widget, GtkMenu   *menu);
  
  void attach_to_widget(Widget& widget, GtkMenuDetachFunc detacher);


};

} // namespace Gtk


namespace Glib
{
  /** @relates Gtk::Menu
   * @param object The C instance
   * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
   * @result A C++ instance that wraps this C instance.
   */
  Gtk::Menu* wrap(GtkMenu* object, bool take_copy = false);
}
#endif /* _GTKMM_MENU_H */