/*

 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef PlatformWheelEvent_h

#define PlatformWheelEvent_h

#include "IntPoint.h"

#if PLATFORM(MAC)

#ifdef __OBJC__

@class NSEvent;

#else

class NSEvent;

#endif

#endif

#if PLATFORM(WIN)

typedef struct HWND__* HWND;

typedef unsigned WPARAM;

typedef long LPARAM;

#endif

#if PLATFORM(GTK)

typedef struct _GdkEventScroll GdkEventScroll;

#endif

#if PLATFORM(QT)

class QWheelEvent;

#endif

namespace WebCore {

    class PlatformWheelEvent {

    public:

        const IntPoint& pos() const { return m_position; }

        const IntPoint& globalPos() const { return m_globalPosition; }

        float deltaX() const { return m_deltaX; }

        float deltaY() const { return m_deltaY; }

        bool isAccepted() const { return m_isAccepted; }

        bool shiftKey() const { return m_shiftKey; }

        bool ctrlKey() const { return m_ctrlKey; }

        bool altKey() const { return m_altKey; }

        bool metaKey() const { return m_metaKey; }

        int x() const { return m_position.x(); }

        int y() const { return m_position.y(); }

        int globalX() const { return m_globalPosition.x(); }

        int globalY() const { return m_globalPosition.y(); }

        void accept() { m_isAccepted = true; }

        void ignore() { m_isAccepted = false; }

        bool isContinuous() const { return m_isContinuous; }

        float continuousDeltaX() const { return m_continuousDeltaX; }

        float continuousDeltaY() const { return m_continuousDeltaY; }

#if PLATFORM(MAC)

        PlatformWheelEvent(NSEvent*);

#endif

#if PLATFORM(WIN)

        PlatformWheelEvent(HWND, WPARAM, LPARAM, bool isHorizontal);

#endif

#if PLATFORM(GTK)

        PlatformWheelEvent(GdkEventScroll*);

#endif

#if PLATFORM(QT)

        PlatformWheelEvent(QWheelEvent*);

#endif

    private:

        IntPoint m_position;

        IntPoint m_globalPosition;

        float m_deltaX;

        float m_deltaY;

        bool m_isAccepted;

        bool m_shiftKey;

        bool m_ctrlKey;

        bool m_altKey;

        bool m_metaKey;

        bool m_isContinuous;

        float m_continuousDeltaX;

        float m_continuousDeltaY;

    };

} // namespace WebCore

#endif // PlatformWheelEvent_h