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/*
Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "PlatformWheelEvent.h"
#include "PlatformMouseEvent.h"
#include "Scrollbar.h"
#include <qapplication.h>
#include <QWheelEvent>
#include <QGraphicsSceneWheelEvent>
namespace WebCore {
void PlatformWheelEvent::applyDelta(int delta, Qt::Orientation orientation)
{
if (orientation == Qt::Horizontal) {
m_deltaX = (delta / 120.0f);
m_deltaY = 0;
} else {
m_deltaX = 0;
m_deltaY = (delta / 120.0f);
}
m_wheelTicksX = m_deltaX;
m_wheelTicksY = m_deltaY;
// Use the same single scroll step as QTextEdit
// (in QTextEditPrivate::init [h,v]bar->setSingleStep)
static const float cDefaultQtScrollStep = 20.f;
#ifndef QT_NO_WHEELEVENT
m_deltaX *= QApplication::wheelScrollLines() * cDefaultQtScrollStep;
m_deltaY *= QApplication::wheelScrollLines() * cDefaultQtScrollStep;
#endif
}
PlatformWheelEvent::PlatformWheelEvent(QGraphicsSceneWheelEvent* e)
#ifdef QT_NO_WHEELEVENT
{
Q_UNUSED(e);
}
#else
: m_position(e->pos().toPoint())
, m_globalPosition(e->screenPos())
, m_granularity(ScrollByPixelWheelEvent)
, m_isAccepted(false)
, m_shiftKey(e->modifiers() & Qt::ShiftModifier)
, m_ctrlKey(e->modifiers() & Qt::ControlModifier)
, m_altKey(e->modifiers() & Qt::AltModifier)
, m_metaKey(e->modifiers() & Qt::MetaModifier)
{
applyDelta(e->delta(), e->orientation());
}
#endif // QT_NO_WHEELEVENT
PlatformWheelEvent::PlatformWheelEvent(QWheelEvent* e)
#ifdef QT_NO_WHEELEVENT
{
Q_UNUSED(e);
}
#else
: m_position(e->pos())
, m_globalPosition(e->globalPos())
, m_granularity(ScrollByPixelWheelEvent)
, m_isAccepted(false)
, m_shiftKey(e->modifiers() & Qt::ShiftModifier)
, m_ctrlKey(e->modifiers() & Qt::ControlModifier)
, m_altKey(e->modifiers() & Qt::AltModifier)
, m_metaKey(e->modifiers() & Qt::MetaModifier)
{
applyDelta(e->delta(), e->orientation());
}
#endif // QT_NO_WHEELEVENT
} // namespace WebCore
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