1 files changed, 98 insertions, 0 deletions
diff --git a/Source/WebCore/platform/qt/WheelEventQt.cpp b/Source/WebCore/platform/qt/WheelEventQt.cpp
new file mode 100644
index 0000000..57a7ebc
--- /dev/null
+++ b/Source/WebCore/platform/qt/WheelEventQt.cpp
@@ -0,0 +1,98 @@
+/*
+    Copyright (C) 2008 Nokia Corporation 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 "WheelEvent.h"
+
+#include "PlatformMouseEvent.h"
+#include "PlatformWheelEvent.h"
+#include "Scrollbar.h"
+
+#include <QGraphicsSceneWheelEvent>
+#include <QWheelEvent>
+#include <qapplication.h>
+
+namespace WebCore {
+
+void PlatformWheelEvent::applyDelta(int delta, Qt::Orientation orientation)
+{
+    // A delta that is not mod 120 indicates a device that is sending
+    // fine-resolution scroll events, so use the delta as number of wheel ticks
+    // and number of pixels to scroll.See also webkit.org/b/29601
+    bool fullTick = !(delta % 120);
+
+    if (orientation == Qt::Horizontal) {
+        m_deltaX = (fullTick) ? delta / 120.0f : delta;
+        m_deltaY = 0;
+    } else {
+        m_deltaX = 0;
+        m_deltaY = (fullTick) ? delta / 120.0f : delta;
+    }
+
+    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 *= (fullTick) ? QApplication::wheelScrollLines() * cDefaultQtScrollStep : 1;
+    m_deltaY *= (fullTick) ? QApplication::wheelScrollLines() * cDefaultQtScrollStep : 1;
+#endif
+}
+
+PlatformWheelEvent::PlatformWheelEvent(QGraphicsSceneWheelEvent* e)
+#ifndef QT_NO_WHEELEVENT
+    : 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)
+#endif
+{
+#ifndef QT_NO_WHEELEVENT
+    applyDelta(e->delta(), e->orientation());
+#else
+    Q_UNUSED(e);
+#endif
+}
+
+PlatformWheelEvent::PlatformWheelEvent(QWheelEvent* e)
+#ifndef QT_NO_WHEELEVENT
+    : 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)
+#endif
+{
+#ifndef QT_NO_WHEELEVENT
+    applyDelta(e->delta(), e->orientation());
+#else
+    Q_UNUSED(e);
+#endif
+}
+
+} // namespace WebCore