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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.
*
*/
#pragma once
#include "MouseEvent.h"
#include "PlatformWheelEvent.h"
namespace WebCore {
class WheelEvent final : public MouseEvent {
WTF_MAKE_ISO_ALLOCATED(WheelEvent);
public:
enum { TickMultiplier = 120 };
enum {
DOM_DELTA_PIXEL = 0,
DOM_DELTA_LINE,
DOM_DELTA_PAGE
};
static Ref<WheelEvent> create(const PlatformWheelEvent&, RefPtr<WindowProxy>&&, IsCancelable = IsCancelable::Yes);
static Ref<WheelEvent> createForBindings();
struct Init : MouseEventInit {
double deltaX { 0 };
double deltaY { 0 };
double deltaZ { 0 };
unsigned deltaMode { DOM_DELTA_PIXEL };
int wheelDeltaX { 0 }; // Deprecated.
int wheelDeltaY { 0 }; // Deprecated.
};
static Ref<WheelEvent> create(const AtomString& type, const Init&);
WEBCORE_EXPORT void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, RefPtr<WindowProxy>&&, int screenX, int screenY, int pageX, int pageY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
const std::optional<PlatformWheelEvent>& underlyingPlatformEvent() const { return m_underlyingPlatformEvent; }
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_underlyingPlatformEvent && m_underlyingPlatformEvent.value().directionInvertedFromDevice(); }
#if PLATFORM(MAC)
PlatformWheelEventPhase phase() const { return m_underlyingPlatformEvent ? m_underlyingPlatformEvent.value().phase() : PlatformWheelEventPhase::None; }
PlatformWheelEventPhase momentumPhase() const { return m_underlyingPlatformEvent ? m_underlyingPlatformEvent.value().momentumPhase() : PlatformWheelEventPhase::None; }
#endif
private:
WheelEvent();
WheelEvent(const AtomString&, const Init&);
WheelEvent(const PlatformWheelEvent&, RefPtr<WindowProxy>&&, IsCancelable);
EventInterface eventInterface() const final;
bool isWheelEvent() const final;
IntPoint m_wheelDelta;
double m_deltaX { 0 };
double m_deltaY { 0 };
double m_deltaZ { 0 };
unsigned m_deltaMode { DOM_DELTA_PIXEL };
std::optional<PlatformWheelEvent> m_underlyingPlatformEvent;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_EVENT(WheelEvent)