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/*
* 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 "EventDispatcher.h"
#include "EventNames.h"
#include "PlatformWheelEvent.h"
#include <wtf/MathExtras.h>
namespace WebCore {
WheelEvent::WheelEvent()
: m_granularity(Pixel)
{
}
WheelEvent::WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
Granularity granularity, PassRefPtr<AbstractView> view,
const IntPoint& screenLocation, const IntPoint& pageLocation,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
bool directionInvertedFromDevice)
: MouseRelatedEvent(eventNames().mousewheelEvent,
true, true, view, 0, screenLocation, pageLocation,
#if ENABLE(POINTER_LOCK)
IntPoint(0, 0),
#endif
ctrlKey, altKey, shiftKey, metaKey)
, m_wheelDelta(IntPoint(static_cast<int>(wheelTicks.x() * tickMultiplier), static_cast<int>(wheelTicks.y() * tickMultiplier)))
, m_rawDelta(roundedIntPoint(rawDelta))
, m_granularity(granularity)
, m_directionInvertedFromDevice(directionInvertedFromDevice)
{
}
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_screenLocation = IntPoint(screenX, screenY);
m_ctrlKey = ctrlKey;
m_altKey = altKey;
m_shiftKey = shiftKey;
m_metaKey = metaKey;
// Normalize to the Windows 120 multiple
m_wheelDelta = IntPoint(rawDeltaX * tickMultiplier, rawDeltaY * tickMultiplier);
m_rawDelta = IntPoint(rawDeltaX, rawDeltaY);
m_granularity = Pixel;
m_directionInvertedFromDevice = false;
initCoordinates(IntPoint(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);
}
const AtomicString& WheelEvent::interfaceName() const
{
return eventNames().interfaceForWheelEvent;
}
inline static WheelEvent::Granularity granularity(const PlatformWheelEvent& event)
{
return event.granularity() == ScrollByPageWheelEvent ? WheelEvent::Page : WheelEvent::Pixel;
}
PassRefPtr<WheelEventDispatchMediator> WheelEventDispatchMediator::create(const PlatformWheelEvent& event, PassRefPtr<AbstractView> view)
{
return adoptRef(new WheelEventDispatchMediator(event, view));
}
WheelEventDispatchMediator::WheelEventDispatchMediator(const PlatformWheelEvent& event, PassRefPtr<AbstractView> view)
{
if (!(event.deltaX() || event.deltaY()))
return;
setEvent(WheelEvent::create(FloatPoint(event.wheelTicksX(), event.wheelTicksY()), FloatPoint(event.deltaX(), event.deltaY()),
granularity(event), view, event.globalPosition(), event.position(),
event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.directionInvertedFromDevice()));
}
WheelEvent* WheelEventDispatchMediator::event() const
{
return static_cast<WheelEvent*>(EventDispatchMediator::event());
}
bool WheelEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
{
if (!event())
return true;
return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled();
}
} // namespace WebCore
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