/*

 * 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, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.

 *

 * 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.

 */

#include "config.h"

#include "WheelEvent.h"

#include "EventNames.h"

#include <wtf/MathExtras.h>

namespace WebCore {

WheelEvent::WheelEvent()

    : m_wheelDeltaX(0)

    , m_wheelDeltaY(0)

    , m_rawDeltaX(0)

    , m_rawDeltaY(0)

    , m_granularity(Pixel)

{

}

WheelEvent::WheelEvent(float wheelTicksX, float wheelTicksY, float rawDeltaX, float rawDeltaY,

                       Granularity granularity, PassRefPtr<AbstractView> view,

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

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

    : MouseRelatedEvent(eventNames().mousewheelEvent,

                        true, true, view, 0, screenX, screenY, pageX, pageY,

                        ctrlKey, altKey, shiftKey, metaKey)

    , m_wheelDeltaX(lroundf(wheelTicksX * 120))

    , m_wheelDeltaY(lroundf(wheelTicksY * 120)) // Normalize to the Windows 120 multiple

    , m_rawDeltaX(rawDeltaX)

    , m_rawDeltaY(rawDeltaY)

    , m_granularity(granularity)

{

}

void WheelEvent::initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView> view,

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

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

{

    if (dispatched())

        return;

    initUIEvent(eventNames().mousewheelEvent, true, true, view, 0);

    m_screenX = screenX;

    m_screenY = screenY;

    m_ctrlKey = ctrlKey;

    m_altKey = altKey;

    m_shiftKey = shiftKey;

    m_metaKey = metaKey;

    // Normalize to the Windows 120 multiple

    m_wheelDeltaX = rawDeltaX * 120;

    m_wheelDeltaY = rawDeltaY * 120;

    m_rawDeltaX = rawDeltaX;

    m_rawDeltaY = rawDeltaY;

    m_granularity = Pixel;

    initCoordinates(pageX, pageY);

}

void WheelEvent::initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView> view,

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

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

{

    initWheelEvent(rawDeltaX, rawDeltaY, view, screenX, screenY, pageX, pageY,

                   ctrlKey, altKey, shiftKey, metaKey);

}

bool WheelEvent::isWheelEvent() const

{

    return true;

}

} // namespace WebCore