/*

 * This file is part of the DOM implementation for KDE.

 *

 * Copyright (C) 2001 Peter Kelly (pmk@post.com)

 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)

 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)

 * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.

 *

 * 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; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 *

 */

#ifndef WheelEvent_h

#define WheelEvent_h

#include "MouseRelatedEvent.h"

namespace WebCore {

    // extension: mouse wheel event

    class WheelEvent : public MouseRelatedEvent {

    public:

        WheelEvent();

        WheelEvent(float wheelDeltaX, float wheelDeltaY, AbstractView*,

                   int screenX, int screenY, int pageX, int pageY,

                   bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);

        void initWheelEvent(int wheelDeltaX, int wheelDeltaY, AbstractView*,

                            int screenX, int screenY, int pageX, int pageY,

                            bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);

        int wheelDelta() const { if (m_wheelDeltaY == 0) return m_wheelDeltaX; return m_wheelDeltaY; }

        int wheelDeltaX() const { return m_wheelDeltaX; }

        int wheelDeltaY() const { return m_wheelDeltaY; }

        // Needed for Objective-C legacy support

        bool isHorizontal() const { return m_wheelDeltaX; }

    private:

        virtual bool isWheelEvent() const;

        int m_wheelDeltaX;

        int m_wheelDeltaY;

    };

} // namespace WebCore

#endif // WheelEvent_h