/*
 * 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 Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <glibmm/object.h>
_DEFS(gtkmm,gtk)
_PINCLUDE(glibmm/private/object_p.h)

namespace Gtk
{

/** A class representing an adjustable bounded value.
 *
 * The Gtk::Adjustment object represents a value which has an associated
 * lower and upper bound, together with step and page increments, and a page
 * size.  It is used within several gtkmm widgets, including
 * Gtk::SpinButton, Gtk::Viewport, and Gtk::Range (which is a base class for
 * Gtk::Scrollbar and Gtk::Scale).
 *
 * The Gtk::Adjustment object does not update the value itself. Instead it
 * is left up to the owner of the Gtk::Adjustment to control the value.
 */
class Adjustment : public Glib::Object
{
  _CLASS_GOBJECT(Adjustment,GtkAdjustment,GTK_ADJUSTMENT,Glib::Object,GObject)
  _DERIVES_INITIALLY_UNOWNED()
public:

  friend class Range;
  friend class HScrollbar;
  friend class VScrollbar;

protected:
  /** Constructor to create an Adjustment object.
   * @param value The initial value
   * @param lower The minimum value
   * @param upper The maximum value
   * @param step_increment The step increment
   * @param page_increment The page increment
   * @param page_size The page size
   */
  Adjustment(double value, double lower, double upper, double step_increment = 1, double page_increment = 10, double page_size = 0);

public:
  _WRAP_CREATE(double value, double lower, double upper, double step_increment = 1, double page_increment = 10, double page_size = 0)

  _WRAP_METHOD(void clamp_page(double lower, double upper), gtk_adjustment_clamp_page)

  _WRAP_METHOD(void set_value(double value), gtk_adjustment_set_value)
  _WRAP_METHOD(double get_value() const, gtk_adjustment_get_value)

  _WRAP_METHOD(void set_lower(double lower), gtk_adjustment_set_lower)
  _WRAP_METHOD(double get_lower() const, gtk_adjustment_get_lower)

  _WRAP_METHOD(void set_upper(double upper), gtk_adjustment_set_upper)
  _WRAP_METHOD(double get_upper() const, gtk_adjustment_get_upper)

  _WRAP_METHOD(void set_step_increment(double step_increment), gtk_adjustment_set_step_increment)
  _WRAP_METHOD(double get_step_increment() const, gtk_adjustment_get_step_increment)

  _WRAP_METHOD(void set_page_increment(double page_increment), gtk_adjustment_set_page_increment)
  _WRAP_METHOD(double get_page_increment() const, gtk_adjustment_get_page_increment)

  _WRAP_METHOD(void set_page_size(double page_size), gtk_adjustment_set_page_size)
  _WRAP_METHOD(double get_page_size() const, gtk_adjustment_get_page_size)

  _WRAP_METHOD(void configure(double value, double lower, double upper, double step_increment, double page_increment, double page_size), gtk_adjustment_configure)

  _WRAP_METHOD(double get_minimum_increment() const, gtk_adjustment_get_minimum_increment)

  _WRAP_SIGNAL(void changed(), "changed")
  _WRAP_SIGNAL(void value_changed(), "value_changed")

  _WRAP_PROPERTY("value", double)
  _WRAP_PROPERTY("lower", double)
  _WRAP_PROPERTY("upper", double)
  _WRAP_PROPERTY("step-increment", double)
  _WRAP_PROPERTY("page-increment", double)
  _WRAP_PROPERTY("page-size", double)

};

} //namespace Gtk
