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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, 2004, 2005, 2006, 2008, 2010, 2013 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.
*
*/
#ifndef WheelEvent_h
#define WheelEvent_h
#include "FloatPoint.h"
#include "MouseEvent.h"
#include "PlatformWheelEvent.h"
namespace WebCore {
class PlatformWheelEvent;
struct WheelEventInit : public MouseEventInit {
WheelEventInit();
double deltaX;
double deltaY;
double deltaZ;
unsigned deltaMode;
int wheelDeltaX; // Deprecated.
int wheelDeltaY; // Deprecated.
};
class WheelEvent : public MouseEvent {
public:
enum { TickMultiplier = 120 };
enum DeltaMode {
DOM_DELTA_PIXEL = 0,
DOM_DELTA_LINE,
DOM_DELTA_PAGE
};
static PassRefPtr<WheelEvent> create()
{
return adoptRef(new WheelEvent);
}
static PassRefPtr<WheelEvent> create(const AtomicString& type, const WheelEventInit& initializer)
{
return adoptRef(new WheelEvent(type, initializer));
}
static PassRefPtr<WheelEvent> create(const PlatformWheelEvent& event, PassRefPtr<AbstractView> view)
{
return adoptRef(new WheelEvent(event, view));
}
void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
int screenX, int screenY, int pageX, int pageY,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
int screenX, int screenY, int pageX, int pageY,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
const PlatformWheelEvent* wheelEvent() const { return m_initializedWithPlatformWheelEvent ? &m_wheelEvent : nullptr; }
double deltaX() const { return m_deltaX; } // Positive when scrolling right.
double deltaY() const { return m_deltaY; } // Positive when scrolling down.
double deltaZ() const { return m_deltaZ; }
int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated.
int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right.
int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down.
unsigned deltaMode() const { return m_deltaMode; }
bool webkitDirectionInvertedFromDevice() const { return m_wheelEvent.directionInvertedFromDevice(); }
// Needed for Objective-C legacy support
bool isHorizontal() const { return m_wheelDelta.x(); }
virtual EventInterface eventInterface() const override;
virtual bool isMouseEvent() const override;
#if PLATFORM(MAC)
PlatformWheelEventPhase phase() const { return m_wheelEvent.phase(); }
PlatformWheelEventPhase momentumPhase() const { return m_wheelEvent.momentumPhase(); }
#endif
private:
WheelEvent();
WheelEvent(const AtomicString&, const WheelEventInit&);
WheelEvent(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
virtual bool isWheelEvent() const override;
IntPoint m_wheelDelta;
double m_deltaX;
double m_deltaY;
double m_deltaZ;
unsigned m_deltaMode;
PlatformWheelEvent m_wheelEvent;
bool m_initializedWithPlatformWheelEvent;
};
EVENT_TYPE_CASTS(WheelEvent)
} // namespace WebCore
#endif // WheelEvent_h
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