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 {
49 enum { TickMultiplier = 120 };
57 static PassRefPtrWillBeRawPtr<WheelEvent> create()
59 return adoptRefWillBeNoop(new WheelEvent);
62 static PassRefPtrWillBeRawPtr<WheelEvent> create(const AtomicString& type, const WheelEventInit& initializer)
64 return adoptRefWillBeNoop(new WheelEvent(type, initializer));
67 static PassRefPtrWillBeRawPtr<WheelEvent> create(const FloatPoint& wheelTicks,
68 const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtrWillBeRawPtr<AbstractView> view,
69 const IntPoint& screenLocation, const IntPoint& pageLocation,
70 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice)
72 return adoptRefWillBeNoop(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
73 screenLocation, pageLocation, ctrlKey, altKey, shiftKey, metaKey, directionInvertedFromDevice));
76 void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView>,
77 int screenX, int screenY, int pageX, int pageY,
78 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
80 void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView>,
81 int screenX, int screenY, int pageX, int pageY,
82 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
84 double deltaX() const { return m_deltaX; } // Positive when scrolling right.
85 double deltaY() const { return m_deltaY; } // Positive when scrolling down.
86 double deltaZ() const { return m_deltaZ; }
87 int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated.
88 int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right.
89 int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down.
90 unsigned deltaMode() const { return m_deltaMode; }
91 float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMultiplier; }
92 float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMultiplier; }
94 bool webkitDirectionInvertedFromDevice() const { return m_directionInvertedFromDevice; }
96 virtual const AtomicString& interfaceName() const OVERRIDE;
97 virtual bool isMouseEvent() const OVERRIDE;
98 virtual bool isWheelEvent() const OVERRIDE;
100 virtual void trace(Visitor*) OVERRIDE;
104 WheelEvent(const AtomicString&, const WheelEventInit&);
105 WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
106 unsigned, PassRefPtrWillBeRawPtr<AbstractView>, const IntPoint& screenLocation, const IntPoint& pageLocation,
107 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice);
109 IntPoint m_wheelDelta;
113 unsigned m_deltaMode;
114 bool m_directionInvertedFromDevice;
117 DEFINE_EVENT_TYPE_CASTS(WheelEvent);
119 class WheelEventDispatchMediator FINAL : public EventDispatchMediator {
121 static PassRefPtr<WheelEventDispatchMediator> create(const PlatformWheelEvent&, PassRefPtrWillBeRawPtr<AbstractView>);
123 WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtrWillBeRawPtr<AbstractView>);
124 WheelEvent* event() const;
125 virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
128 } // namespace WebCore
130 #endif // WheelEvent_h