Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTSLIDER_P_H
+#define QABSTRACTSLIDER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtCore/qbasictimer.h"
+#include "private/qwidget_p.h"
+#include "qstyle.h"
+
+QT_BEGIN_NAMESPACE
+
+class QAbstractSliderPrivate : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QAbstractSlider)
+public:
+    QAbstractSliderPrivate();
+    ~QAbstractSliderPrivate();
+
+    void setSteps(int single, int page);
+
+    int minimum, maximum, singleStep, pageStep, value, position, pressValue;
+    uint tracking : 1;
+    uint blocktracking :1;
+    uint pressed : 1;
+    uint invertedAppearance : 1;
+    uint invertedControls : 1;
+    Qt::Orientation orientation;
+
+    QBasicTimer repeatActionTimer;
+    int repeatActionTime;
+    QAbstractSlider::SliderAction repeatAction;
+    
+#ifdef QT_KEYPAD_NAVIGATION
+    int origValue;
+#endif
+
+    inline int bound(int val) const { return qMax(minimum, qMin(maximum, val)); }
+    inline int overflowSafeAdd(int add) const
+    {
+        int newValue = value + add;
+        if (add > 0 && newValue < value)
+            newValue = maximum;
+        else if (add < 0 && newValue > value)
+            newValue = minimum;
+        return newValue;
+    }
+    inline void setAdjustedSliderPosition(int position)
+    {
+        Q_Q(QAbstractSlider);
+        if (q->style()->styleHint(QStyle::SH_Slider_StopMouseOverSlider, 0, q)) {
+            if ((position > pressValue - 2 * pageStep) && (position < pressValue + 2 * pageStep)) {
+                repeatAction = QAbstractSlider::SliderNoAction;
+                q->setSliderPosition(pressValue);
+                return;
+            }
+        }
+        q->triggerAction(repeatAction);
+    }
+};
+
+QT_END_NAMESPACE
+
+#endif // QABSTRACTSLIDER_P_H