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 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include "config.h"
24 #include "WheelEvent.h"
25
26 #include "EventDispatcher.h"
27 #include "EventNames.h"
28 #include "PlatformWheelEvent.h"
29
30 #include <wtf/MathExtras.h>
31
32 namespace WebCore {
33
WheelEvent()34 WheelEvent::WheelEvent()
35 : m_wheelDeltaX(0)
36 , m_wheelDeltaY(0)
37 , m_rawDeltaX(0)
38 , m_rawDeltaY(0)
39 , m_granularity(Pixel)
40 {
41 }
42
WheelEvent(float wheelTicksX,float wheelTicksY,float rawDeltaX,float rawDeltaY,Granularity granularity,PassRefPtr<AbstractView> view,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey)43 WheelEvent::WheelEvent(float wheelTicksX, float wheelTicksY, float rawDeltaX, float rawDeltaY,
44 Granularity granularity, PassRefPtr<AbstractView> view,
45 int screenX, int screenY, int pageX, int pageY,
46 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
47 : MouseRelatedEvent(eventNames().mousewheelEvent,
48 true, true, view, 0, screenX, screenY, pageX, pageY,
49 ctrlKey, altKey, shiftKey, metaKey)
50 , m_wheelDeltaX(lroundf(wheelTicksX * 120))
51 , m_wheelDeltaY(lroundf(wheelTicksY * 120)) // Normalize to the Windows 120 multiple
52 , m_rawDeltaX(rawDeltaX)
53 , m_rawDeltaY(rawDeltaY)
54 , m_granularity(granularity)
55 {
56 }
57
initWheelEvent(int rawDeltaX,int rawDeltaY,PassRefPtr<AbstractView> view,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey)58 void WheelEvent::initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView> view,
59 int screenX, int screenY, int pageX, int pageY,
60 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
61 {
62 if (dispatched())
63 return;
64
65 initUIEvent(eventNames().mousewheelEvent, true, true, view, 0);
66
67 m_screenX = screenX;
68 m_screenY = screenY;
69 m_ctrlKey = ctrlKey;
70 m_altKey = altKey;
71 m_shiftKey = shiftKey;
72 m_metaKey = metaKey;
73
74 // Normalize to the Windows 120 multiple
75 m_wheelDeltaX = rawDeltaX * 120;
76 m_wheelDeltaY = rawDeltaY * 120;
77
78 m_rawDeltaX = rawDeltaX;
79 m_rawDeltaY = rawDeltaY;
80 m_granularity = Pixel;
81
82 initCoordinates(pageX, pageY);
83 }
84
initWebKitWheelEvent(int rawDeltaX,int rawDeltaY,PassRefPtr<AbstractView> view,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey)85 void WheelEvent::initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView> view,
86 int screenX, int screenY, int pageX, int pageY,
87 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
88 {
89 initWheelEvent(rawDeltaX, rawDeltaY, view, screenX, screenY, pageX, pageY,
90 ctrlKey, altKey, shiftKey, metaKey);
91 }
92
isWheelEvent() const93 bool WheelEvent::isWheelEvent() const
94 {
95 return true;
96 }
97
granularity(const PlatformWheelEvent & event)98 inline static WheelEvent::Granularity granularity(const PlatformWheelEvent& event)
99 {
100 return event.granularity() == ScrollByPageWheelEvent ? WheelEvent::Page : WheelEvent::Pixel;
101 }
102
WheelEventDispatchMediator(const PlatformWheelEvent & event,PassRefPtr<AbstractView> view)103 WheelEventDispatchMediator::WheelEventDispatchMediator(const PlatformWheelEvent& event, PassRefPtr<AbstractView> view)
104 {
105 if (!(event.deltaX() || event.deltaY()))
106 return;
107
108 setEvent(WheelEvent::create(event.wheelTicksX(), event.wheelTicksY(), event.deltaX(), event.deltaY(), granularity(event),
109 view, event.globalX(), event.globalY(), event.x(), event.y(), event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey()));
110
111 }
112
event() const113 WheelEvent* WheelEventDispatchMediator::event() const
114 {
115 return static_cast<WheelEvent*>(EventDispatchMediator::event());
116 }
117
dispatchEvent(EventDispatcher * dispatcher) const118 bool WheelEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
119 {
120 if (!event())
121 return true;
122
123 return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled();
124 }
125
126 } // namespace WebCore
127