/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 */

/** \file
 * \ingroup GHOST
 * Declaration of GHOST_EventWheel class.
 */

#ifndef __GHOST_EVENTWHEEL_H__
#define __GHOST_EVENTWHEEL_H__

#include "GHOST_Event.h"

/**
 * Mouse wheel event.
 * The displacement of the mouse wheel is counted in ticks.
 * A positive value means the wheel is turned away from the user.
 */
class GHOST_EventWheel : public GHOST_Event {
 public:
  /**
   * Constructor.
   * \param msec: The time this event was generated.
   * \param window: The window of this event.
   * \param z: The displacement of the mouse wheel.
   */
  GHOST_EventWheel(GHOST_TUns64 msec, GHOST_IWindow *window, GHOST_TInt32 z)
      : GHOST_Event(msec, GHOST_kEventWheel, window)
  {
    m_wheelEventData.z = z;
    m_data = &m_wheelEventData;
  }

 protected:
  /** The z-displacement of the mouse wheel. */
  GHOST_TEventWheelData m_wheelEventData;
};

#endif  // __GHOST_EVENTWHEEL_H__
