1 /*
2 Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
18 */
19
20 #include "config.h"
21 #include "PlatformWheelEvent.h"
22
23 #include "PlatformMouseEvent.h"
24 #include "Scrollbar.h"
25
26 #include <qapplication.h>
27 #include <QWheelEvent>
28
29 namespace WebCore {
30
31
PlatformWheelEvent(QWheelEvent * e)32 PlatformWheelEvent::PlatformWheelEvent(QWheelEvent* e)
33 #ifdef QT_NO_WHEELEVENT
34 {
35 Q_UNUSED(e);
36 }
37 #else
38 : m_position(e->pos())
39 , m_globalPosition(e->globalPos())
40 , m_granularity(ScrollByPixelWheelEvent)
41 , m_isAccepted(false)
42 , m_shiftKey(e->modifiers() & Qt::ShiftModifier)
43 , m_ctrlKey(e->modifiers() & Qt::ControlModifier)
44 , m_altKey(e->modifiers() & Qt::AltModifier)
45 , m_metaKey(e->modifiers() & Qt::MetaModifier)
46 {
47 if (e->orientation() == Qt::Horizontal) {
48 m_deltaX = (e->delta() / 120);
49 m_deltaY = 0;
50 } else {
51 m_deltaX = 0;
52 m_deltaY = (e->delta() / 120);
53 }
54 m_wheelTicksX = m_deltaX;
55 m_wheelTicksY = m_deltaY;
56
57 // use the same single scroll step as QTextEdit (in
58 // QTextEditPrivate::init [h,v]bar->setSingleStep )
59 static const float cDefaultQtScrollStep = 20.f;
60 m_deltaX *= QApplication::wheelScrollLines() * cDefaultQtScrollStep;
61 m_deltaY *= QApplication::wheelScrollLines() * cDefaultQtScrollStep;
62 }
63 #endif // QT_NO_WHEELEVENT
64
65 } // namespace WebCore
66