1 /*
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, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.
6 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
7 *
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.
12 *
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.
17 *
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.
22 */
23
24 #include "config.h"
25 #include "core/events/WheelEvent.h"
26
27 #include "core/clipboard/Clipboard.h"
28 #include "platform/PlatformWheelEvent.h"
29
30 namespace WebCore {
31
WheelEventInit()32 WheelEventInit::WheelEventInit()
33 : deltaX(0)
34 , deltaY(0)
35 , deltaZ(0)
36 , wheelDeltaX(0)
37 , wheelDeltaY(0)
38 , deltaMode(WheelEvent::DOM_DELTA_PIXEL)
39 {
40 }
41
WheelEvent()42 WheelEvent::WheelEvent()
43 : m_deltaX(0)
44 , m_deltaY(0)
45 , m_deltaZ(0)
46 , m_deltaMode(DOM_DELTA_PIXEL)
47 , m_directionInvertedFromDevice(false)
48 {
49 ScriptWrappable::init(this);
50 }
51
WheelEvent(const AtomicString & type,const WheelEventInit & initializer)52 WheelEvent::WheelEvent(const AtomicString& type, const WheelEventInit& initializer)
53 : MouseEvent(type, initializer)
54 , m_wheelDelta(initializer.wheelDeltaX ? initializer.wheelDeltaX : -initializer.deltaX, initializer.wheelDeltaY ? initializer.wheelDeltaY : -initializer.deltaY)
55 , m_deltaX(initializer.deltaX ? initializer.deltaX : -initializer.wheelDeltaX)
56 , m_deltaY(initializer.deltaY ? initializer.deltaY : -initializer.wheelDeltaY)
57 , m_deltaZ(initializer.deltaZ)
58 , m_deltaMode(initializer.deltaMode)
59 {
60 ScriptWrappable::init(this);
61 }
62
WheelEvent(const FloatPoint & wheelTicks,const FloatPoint & rawDelta,unsigned deltaMode,PassRefPtrWillBeRawPtr<AbstractView> view,const IntPoint & screenLocation,const IntPoint & pageLocation,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey,bool directionInvertedFromDevice)63 WheelEvent::WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta, unsigned deltaMode,
64 PassRefPtrWillBeRawPtr<AbstractView> view, const IntPoint& screenLocation, const IntPoint& pageLocation,
65 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice)
66 : MouseEvent(EventTypeNames::wheel,
67 true, true, view, 0, screenLocation.x(), screenLocation.y(),
68 pageLocation.x(), pageLocation.y(),
69 0, 0,
70 ctrlKey, altKey, shiftKey, metaKey, 0, nullptr, nullptr, false)
71 , m_wheelDelta(wheelTicks.x() * TickMultiplier, wheelTicks.y() * TickMultiplier)
72 , m_deltaX(-rawDelta.x())
73 , m_deltaY(-rawDelta.y())
74 , m_deltaZ(0)
75 , m_deltaMode(deltaMode)
76 , m_directionInvertedFromDevice(directionInvertedFromDevice)
77 {
78 ScriptWrappable::init(this);
79 }
80
initWheelEvent(int rawDeltaX,int rawDeltaY,PassRefPtrWillBeRawPtr<AbstractView> view,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey)81 void WheelEvent::initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView> view,
82 int screenX, int screenY, int pageX, int pageY,
83 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
84 {
85 if (dispatched())
86 return;
87
88 initUIEvent(EventTypeNames::wheel, true, true, view, 0);
89
90 m_screenLocation = IntPoint(screenX, screenY);
91 m_ctrlKey = ctrlKey;
92 m_altKey = altKey;
93 m_shiftKey = shiftKey;
94 m_metaKey = metaKey;
95
96 m_wheelDelta = IntPoint(rawDeltaX * TickMultiplier, rawDeltaY * TickMultiplier);
97 m_deltaX = -rawDeltaX;
98 m_deltaY = -rawDeltaY;
99 m_deltaMode = DOM_DELTA_PIXEL;
100 m_directionInvertedFromDevice = false;
101
102 initCoordinates(IntPoint(pageX, pageY));
103 }
104
initWebKitWheelEvent(int rawDeltaX,int rawDeltaY,PassRefPtrWillBeRawPtr<AbstractView> view,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey)105 void WheelEvent::initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView> view,
106 int screenX, int screenY, int pageX, int pageY,
107 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
108 {
109 initWheelEvent(rawDeltaX, rawDeltaY, view, screenX, screenY, pageX, pageY,
110 ctrlKey, altKey, shiftKey, metaKey);
111 }
112
interfaceName() const113 const AtomicString& WheelEvent::interfaceName() const
114 {
115 return EventNames::WheelEvent;
116 }
117
isMouseEvent() const118 bool WheelEvent::isMouseEvent() const
119 {
120 return false;
121 }
122
isWheelEvent() const123 bool WheelEvent::isWheelEvent() const
124 {
125 return true;
126 }
127
trace(Visitor * visitor)128 void WheelEvent::trace(Visitor* visitor)
129 {
130 MouseEvent::trace(visitor);
131 }
132
deltaMode(const PlatformWheelEvent & event)133 inline static unsigned deltaMode(const PlatformWheelEvent& event)
134 {
135 return event.granularity() == ScrollByPageWheelEvent ? WheelEvent::DOM_DELTA_PAGE : WheelEvent::DOM_DELTA_PIXEL;
136 }
137
create(const PlatformWheelEvent & event,PassRefPtrWillBeRawPtr<AbstractView> view)138 PassRefPtrWillBeRawPtr<WheelEventDispatchMediator> WheelEventDispatchMediator::create(const PlatformWheelEvent& event, PassRefPtrWillBeRawPtr<AbstractView> view)
139 {
140 return adoptRefWillBeNoop(new WheelEventDispatchMediator(event, view));
141 }
142
WheelEventDispatchMediator(const PlatformWheelEvent & event,PassRefPtrWillBeRawPtr<AbstractView> view)143 WheelEventDispatchMediator::WheelEventDispatchMediator(const PlatformWheelEvent& event, PassRefPtrWillBeRawPtr<AbstractView> view)
144 {
145 if (!(event.deltaX() || event.deltaY()))
146 return;
147
148 setEvent(WheelEvent::create(FloatPoint(event.wheelTicksX(), event.wheelTicksY()), FloatPoint(event.deltaX(), event.deltaY()),
149 deltaMode(event), view, event.globalPosition(), event.position(),
150 event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.directionInvertedFromDevice()));
151 }
152
event() const153 WheelEvent* WheelEventDispatchMediator::event() const
154 {
155 return toWheelEvent(EventDispatchMediator::event());
156 }
157
dispatchEvent(EventDispatcher * dispatcher) const158 bool WheelEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
159 {
160 ASSERT(event());
161 return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled();
162 }
163
164 } // namespace WebCore
165