2 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
3 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.
6 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
28 #include "core/events/EventDispatchMediator.h"
29 #include "core/events/MouseEvent.h"
30 #include "platform/geometry/FloatPoint.h"
34 class PlatformWheelEvent;
36 struct WheelEventInit : public MouseEventInit {
42 int wheelDeltaX; // Deprecated.
43 int wheelDeltaY; // Deprecated.
47 class WheelEvent final : public MouseEvent {
48 DEFINE_WRAPPERTYPEINFO();
50 enum { TickMultiplier = 120 };
58 static PassRefPtrWillBeRawPtr<WheelEvent> create()
60 return adoptRefWillBeNoop(new WheelEvent);
63 static PassRefPtrWillBeRawPtr<WheelEvent> create(const AtomicString& type, const WheelEventInit& initializer)
65 return adoptRefWillBeNoop(new WheelEvent(type, initializer));
68 static PassRefPtrWillBeRawPtr<WheelEvent> create(const FloatPoint& wheelTicks,
69 const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtrWillBeRawPtr<AbstractView> view,
70 const IntPoint& screenLocation, const IntPoint& pageLocation,
71 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
73 return adoptRefWillBeNoop(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
74 screenLocation, pageLocation, ctrlKey, altKey, shiftKey, metaKey));
77 double deltaX() const { return m_deltaX; } // Positive when scrolling right.
78 double deltaY() const { return m_deltaY; } // Positive when scrolling down.
79 double deltaZ() const { return m_deltaZ; }
80 int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated.
81 int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right.
82 int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down.
83 unsigned deltaMode() const { return m_deltaMode; }
84 float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMultiplier; }
85 float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMultiplier; }
87 virtual const AtomicString& interfaceName() const override;
88 virtual bool isMouseEvent() const override;
89 virtual bool isWheelEvent() const override;
91 virtual void trace(Visitor*) override;
95 WheelEvent(const AtomicString&, const WheelEventInit&);
96 WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
97 unsigned, PassRefPtrWillBeRawPtr<AbstractView>, const IntPoint& screenLocation, const IntPoint& pageLocation,
98 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
100 IntPoint m_wheelDelta;
104 unsigned m_deltaMode;
107 DEFINE_EVENT_TYPE_CASTS(WheelEvent);
109 class WheelEventDispatchMediator final : public EventDispatchMediator {
111 static PassRefPtrWillBeRawPtr<WheelEventDispatchMediator> create(const PlatformWheelEvent&, PassRefPtrWillBeRawPtr<AbstractView>);
113 WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtrWillBeRawPtr<AbstractView>);
114 WheelEvent* event() const;
115 virtual bool dispatchEvent(EventDispatcher*) const override;
120 #endif // WheelEvent_h