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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 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 "core/dom/EventDispatchMediator.h"
#include "core/dom/MouseEvent.h"
#include "core/platform/graphics/FloatPoint.h"
namespace WebCore {
class PlatformWheelEvent;
struct WheelEventInit : public MouseEventInit {
WheelEventInit();
double deltaX;
double deltaY;
double deltaZ;
int wheelDeltaX; // Deprecated.
int wheelDeltaY; // Deprecated.
unsigned deltaMode;
};
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 FloatPoint& wheelTicks,
const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtr<AbstractView> view,
const IntPoint& screenLocation, const IntPoint& pageLocation,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice)
{
return adoptRef(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
screenLocation, pageLocation, ctrlKey, altKey, shiftKey, metaKey, directionInvertedFromDevice));
}
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);
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_deltaX; } // Deprecated, negative when scrolling right.
int wheelDeltaY() const { return -m_deltaY; } // Deprecated, negative when scrolling down.
int rawDeltaX() const { return m_rawDelta.x(); }
int rawDeltaY() const { return m_rawDelta.y(); }
unsigned deltaMode() const { return m_deltaMode; }
bool webkitDirectionInvertedFromDevice() const { return m_directionInvertedFromDevice; }
virtual const AtomicString& interfaceName() const;
virtual bool isMouseEvent() const;
private:
WheelEvent();
WheelEvent(const AtomicString&, const WheelEventInit&);
WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
unsigned, PassRefPtr<AbstractView>, const IntPoint& screenLocation, const IntPoint& pageLocation,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice);
double m_deltaX;
double m_deltaY;
double m_deltaZ;
IntPoint m_rawDelta;
unsigned m_deltaMode;
bool m_directionInvertedFromDevice;
};
class WheelEventDispatchMediator : public EventDispatchMediator {
public:
static PassRefPtr<WheelEventDispatchMediator> create(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
private:
WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
WheelEvent* event() const;
virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
};
} // namespace WebCore
#endif // WheelEvent_h