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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.
* Copyright (C) 2013 Samsung Electronics. 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 "core/events/WheelEvent.h"
#include "core/clipboard/DataTransfer.h"
#include "platform/PlatformMouseEvent.h"
#include "platform/PlatformWheelEvent.h"
namespace blink {
WheelEvent::WheelEvent()
: m_deltaX(0)
, m_deltaY(0)
, m_deltaZ(0)
, m_deltaMode(DOM_DELTA_PIXEL)
, m_canScroll(true)
, m_hasPreciseScrollingDeltas(false)
{
}
WheelEvent::WheelEvent(const AtomicString& type, const WheelEventInit& initializer)
: MouseEvent(type, initializer)
, m_wheelDelta(initializer.wheelDeltaX() ? initializer.wheelDeltaX() : -initializer.deltaX(), initializer.wheelDeltaY() ? initializer.wheelDeltaY() : -initializer.deltaY())
, m_deltaX(initializer.deltaX() ? initializer.deltaX() : -initializer.wheelDeltaX())
, m_deltaY(initializer.deltaY() ? initializer.deltaY() : -initializer.wheelDeltaY())
, m_deltaZ(initializer.deltaZ())
, m_deltaMode(initializer.deltaMode())
, m_canScroll(true)
, m_hasPreciseScrollingDeltas(false)
{
}
WheelEvent::WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta, unsigned deltaMode,
PassRefPtrWillBeRawPtr<AbstractView> view, const IntPoint& screenLocation, const IntPoint& windowLocation,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short buttons, bool canScroll, bool hasPreciseScrollingDeltas)
: MouseEvent(EventTypeNames::wheel, true, true, view, 0, screenLocation.x(), screenLocation.y(),
windowLocation.x(), windowLocation.y(), 0, 0, ctrlKey, altKey, shiftKey, metaKey, 0, buttons,
nullptr, nullptr, false, PlatformMouseEvent::RealOrIndistinguishable)
, m_wheelDelta(wheelTicks.x() * TickMultiplier, wheelTicks.y() * TickMultiplier)
, m_deltaX(-rawDelta.x())
, m_deltaY(-rawDelta.y())
, m_deltaZ(0)
, m_deltaMode(deltaMode)
, m_canScroll(canScroll)
, m_hasPreciseScrollingDeltas(hasPreciseScrollingDeltas)
{
}
const AtomicString& WheelEvent::interfaceName() const
{
return EventNames::WheelEvent;
}
bool WheelEvent::isMouseEvent() const
{
return false;
}
bool WheelEvent::isWheelEvent() const
{
return true;
}
void WheelEvent::trace(Visitor* visitor)
{
MouseEvent::trace(visitor);
}
inline static unsigned deltaMode(const PlatformWheelEvent& event)
{
return event.granularity() == ScrollByPageWheelEvent ? WheelEvent::DOM_DELTA_PAGE : WheelEvent::DOM_DELTA_PIXEL;
}
PassRefPtrWillBeRawPtr<WheelEventDispatchMediator> WheelEventDispatchMediator::create(const PlatformWheelEvent& event, PassRefPtrWillBeRawPtr<AbstractView> view)
{
return adoptRefWillBeNoop(new WheelEventDispatchMediator(event, view));
}
WheelEventDispatchMediator::WheelEventDispatchMediator(const PlatformWheelEvent& event, PassRefPtrWillBeRawPtr<AbstractView> view)
{
setEvent(WheelEvent::create(FloatPoint(event.wheelTicksX(), event.wheelTicksY()), FloatPoint(event.deltaX(), event.deltaY()),
deltaMode(event), view, event.globalPosition(), event.position(),
event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(),
MouseEvent::platformModifiersToButtons(event.modifiers()),
event.canScroll(), event.hasPreciseScrollingDeltas()));
}
WheelEvent& WheelEventDispatchMediator::event() const
{
return toWheelEvent(EventDispatchMediator::event());
}
bool WheelEventDispatchMediator::dispatchEvent(EventDispatcher& dispatcher) const
{
if (!(event().deltaX() || event().deltaY()))
return true;
return EventDispatchMediator::dispatchEvent(dispatcher) && !event().defaultHandled();
}
} // namespace blink
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