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diff --git a/src/quick/util/qquickboundaryrule_p.h b/src/quick/util/qquickboundaryrule_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKBOUNDARYRULE_H
+#define QQUICKBOUNDARYRULE_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 <private/qtquickglobal_p.h>
+
+#include <private/qqmlpropertyvalueinterceptor_p.h>
+#include <qqml.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickAbstractAnimation;
+class QQuickBoundaryRulePrivate;
+class Q_QUICK_PRIVATE_EXPORT QQuickBoundaryRule : public QObject, public QQmlPropertyValueInterceptor
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QQuickBoundaryRule)
+
+    Q_INTERFACES(QQmlPropertyValueInterceptor)
+    Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
+    Q_PROPERTY(qreal minimum READ minimum WRITE setMinimum NOTIFY minimumChanged)
+    Q_PROPERTY(qreal minimumOvershoot READ minimumOvershoot WRITE setMinimumOvershoot NOTIFY minimumOvershootChanged)
+    Q_PROPERTY(qreal maximum READ maximum WRITE setMaximum NOTIFY maximumChanged)
+    Q_PROPERTY(qreal maximumOvershoot READ maximumOvershoot WRITE setMaximumOvershoot NOTIFY maximumOvershootChanged)
+    Q_PROPERTY(qreal overshootScale READ overshootScale WRITE setOvershootScale NOTIFY overshootScaleChanged)
+    Q_PROPERTY(qreal currentOvershoot READ currentOvershoot NOTIFY currentOvershootChanged)
+    Q_PROPERTY(qreal peakOvershoot READ peakOvershoot NOTIFY peakOvershootChanged)
+    Q_PROPERTY(OvershootFilter overshootFilter READ overshootFilter WRITE setOvershootFilter NOTIFY overshootFilterChanged)
+    Q_PROPERTY(QEasingCurve easing READ easing WRITE setEasing NOTIFY easingChanged)
+    Q_PROPERTY(int returnDuration READ returnDuration WRITE setReturnDuration NOTIFY returnDurationChanged)
+
+public:
+    enum OvershootFilter {
+        None,
+        Peak
+    };
+    Q_ENUM(OvershootFilter)
+
+    QQuickBoundaryRule(QObject *parent=nullptr);
+    ~QQuickBoundaryRule();
+
+    void setTarget(const QQmlProperty &) override;
+    void write(const QVariant &value) override;
+
+    bool enabled() const;
+    void setEnabled(bool enabled);
+
+    qreal minimum() const;
+    void setMinimum(qreal minimum);
+    qreal minimumOvershoot() const;
+    void setMinimumOvershoot(qreal minimum);
+
+    qreal maximum() const;
+    void setMaximum(qreal maximum);
+    qreal maximumOvershoot() const;
+    void setMaximumOvershoot(qreal maximum);
+
+    qreal overshootScale() const;
+    void setOvershootScale(qreal scale);
+
+    qreal currentOvershoot() const;
+    qreal peakOvershoot() const;
+
+    OvershootFilter overshootFilter() const;
+    void setOvershootFilter(OvershootFilter overshootFilter);
+
+    Q_INVOKABLE bool returnToBounds();
+
+    QEasingCurve easing() const;
+    void setEasing(const QEasingCurve &easing);
+
+    int returnDuration() const;
+    void setReturnDuration(int duration);
+
+Q_SIGNALS:
+    void enabledChanged();
+    void minimumChanged();
+    void minimumOvershootChanged();
+    void maximumChanged();
+    void maximumOvershootChanged();
+    void overshootScaleChanged();
+    void currentOvershootChanged();
+    void peakOvershootChanged();
+    void overshootFilterChanged();
+    void easingChanged();
+    void returnDurationChanged();
+
+private Q_SLOTS:
+    void componentFinalized();
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QQuickBoundaryRule)
+
+#endif // QQUICKBOUNDARYRULE_H