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 #include <QGraphicsSceneWheelEvent> 29 30 namespace WebCore { 31 32 void PlatformWheelEvent::applyDelta(int delta, Qt::Orientation orientation) 33 { 34 if (orientation == Qt::Horizontal) { 35 m_deltaX = (delta / 120.0f); 36 m_deltaY = 0; 37 } else { 38 m_deltaX = 0; 39 m_deltaY = (delta / 120.0f); 40 } 41 42 m_wheelTicksX = m_deltaX; 43 m_wheelTicksY = m_deltaY; 44 45 // Use the same single scroll step as QTextEdit 46 // (in QTextEditPrivate::init [h,v]bar->setSingleStep) 47 static const float cDefaultQtScrollStep = 20.f; 48 #ifndef QT_NO_WHEELEVENT 49 m_deltaX *= QApplication::wheelScrollLines() * cDefaultQtScrollStep; 50 m_deltaY *= QApplication::wheelScrollLines() * cDefaultQtScrollStep; 51 #endif 52 } 53 54 PlatformWheelEvent::PlatformWheelEvent(QGraphicsSceneWheelEvent* e) 55 #ifdef QT_NO_WHEELEVENT 56 { 57 Q_UNUSED(e); 58 } 59 #else 60 : m_position(e->pos().toPoint()) 61 , m_globalPosition(e->screenPos()) 62 , m_granularity(ScrollByPixelWheelEvent) 63 , m_isAccepted(false) 64 , m_shiftKey(e->modifiers() & Qt::ShiftModifier) 65 , m_ctrlKey(e->modifiers() & Qt::ControlModifier) 66 , m_altKey(e->modifiers() & Qt::AltModifier) 67 , m_metaKey(e->modifiers() & Qt::MetaModifier) 68 { 69 applyDelta(e->delta(), e->orientation()); 70 } 71 #endif // QT_NO_WHEELEVENT 72 73 PlatformWheelEvent::PlatformWheelEvent(QWheelEvent* e) 74 #ifdef QT_NO_WHEELEVENT 75 { 76 Q_UNUSED(e); 77 } 78 #else 79 : m_position(e->pos()) 80 , m_globalPosition(e->globalPos()) 81 , m_granularity(ScrollByPixelWheelEvent) 82 , m_isAccepted(false) 83 , m_shiftKey(e->modifiers() & Qt::ShiftModifier) 84 , m_ctrlKey(e->modifiers() & Qt::ControlModifier) 85 , m_altKey(e->modifiers() & Qt::AltModifier) 86 , m_metaKey(e->modifiers() & Qt::MetaModifier) 87 { 88 applyDelta(e->delta(), e->orientation()); 89 } 90 #endif // QT_NO_WHEELEVENT 91 92 } // namespace WebCore 93
