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diff --git a/qtinterface/qt4/Qt/qeasingcurve.h b/qtinterface/qt4/Qt/qeasingcurve.h
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 1.1, 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 have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEASINGCURVE_H
+#define QEASINGCURVE_H
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+class QEasingCurvePrivate;
+class Q_CORE_EXPORT QEasingCurve
+{
+    Q_GADGET
+    Q_ENUMS(Type)
+public:
+    enum Type {
+        Linear,
+        InQuad, OutQuad, InOutQuad, OutInQuad,
+        InCubic, OutCubic, InOutCubic, OutInCubic,
+        InQuart, OutQuart, InOutQuart, OutInQuart,
+        InQuint, OutQuint, InOutQuint, OutInQuint,
+        InSine, OutSine, InOutSine, OutInSine,
+        InExpo, OutExpo, InOutExpo, OutInExpo,
+        InCirc, OutCirc, InOutCirc, OutInCirc,
+        InElastic, OutElastic, InOutElastic, OutInElastic,
+        InBack, OutBack, InOutBack, OutInBack,
+        InBounce, OutBounce, InOutBounce, OutInBounce,
+        InCurve, OutCurve, SineCurve, CosineCurve,
+        Custom, NCurveTypes
+    };
+
+    QEasingCurve(Type type = Linear);
+    QEasingCurve(const QEasingCurve &other);
+    ~QEasingCurve();
+
+    QEasingCurve &operator=(const QEasingCurve &other);
+    bool operator==(const QEasingCurve &other) const;
+    inline bool operator!=(const QEasingCurve &other) const
+    { return !(this->operator==(other)); }
+
+    qreal amplitude() const;
+    void setAmplitude(qreal amplitude);
+
+    qreal period() const;
+    void setPeriod(qreal period);
+
+    qreal overshoot() const;
+    void setOvershoot(qreal overshoot);
+
+    Type type() const;
+    void setType(Type type);
+    typedef qreal (*EasingFunction)(qreal progress);
+    void setCustomType(EasingFunction func);
+    EasingFunction customType() const;
+
+    qreal valueForProgress(qreal progress) const;
+private:
+    QEasingCurvePrivate *d_ptr;
+    friend Q_CORE_EXPORT QDebug operator<<(QDebug debug, const QEasingCurve &item);
+};
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_CORE_EXPORT QDebug operator<<(QDebug debug, const QEasingCurve &item);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif