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diff --git a/src/qtdesktop/qrangemodel.h b/src/qtdesktop/qrangemodel.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Components project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QRANGEMODEL_H
+#define QRANGEMODEL_H
+
+#include <QtCore/qobject.h>
+//#include <QtGui/qgraphicsitem.h>
+#include <QtWidgets/qabstractslider.h>
+#include <QtQml/qqml.h>
+
+class QRangeModelPrivate;
+
+class QRangeModel : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY valueChanged USER true)
+    Q_PROPERTY(qreal minimumValue READ minimum WRITE setMinimum NOTIFY minimumChanged)
+    Q_PROPERTY(qreal maximumValue READ maximum WRITE setMaximum NOTIFY maximumChanged)
+    Q_PROPERTY(qreal stepSize READ stepSize WRITE setStepSize NOTIFY stepSizeChanged)
+    Q_PROPERTY(qreal position READ position WRITE setPosition NOTIFY positionChanged)
+    Q_PROPERTY(qreal positionAtMinimum READ positionAtMinimum WRITE setPositionAtMinimum NOTIFY positionAtMinimumChanged)
+    Q_PROPERTY(qreal positionAtMaximum READ positionAtMaximum WRITE setPositionAtMaximum NOTIFY positionAtMaximumChanged)
+    Q_PROPERTY(bool inverted READ inverted WRITE setInverted NOTIFY invertedChanged)
+
+public:
+    QRangeModel(QObject *parent = 0);
+    virtual ~QRangeModel();
+
+    void setRange(qreal min, qreal max);
+    void setPositionRange(qreal min, qreal max);
+
+    void setStepSize(qreal stepSize);
+    qreal stepSize() const;
+
+    void setMinimum(qreal min);
+    qreal minimum() const;
+
+    void setMaximum(qreal max);
+    qreal maximum() const;
+
+    void setPositionAtMinimum(qreal posAtMin);
+    qreal positionAtMinimum() const;
+
+    void setPositionAtMaximum(qreal posAtMax);
+    qreal positionAtMaximum() const;
+
+    void setInverted(bool inverted);
+    bool inverted() const;
+
+    qreal value() const;
+    qreal position() const;
+
+    Q_INVOKABLE qreal valueForPosition(qreal position) const;
+    Q_INVOKABLE qreal positionForValue(qreal value) const;
+
+public Q_SLOTS:
+    void toMinimum();
+    void toMaximum();
+    void setValue(qreal value);
+    void setPosition(qreal position);
+
+Q_SIGNALS:
+    void valueChanged(qreal value);
+    void positionChanged(qreal position);
+
+    void stepSizeChanged(qreal stepSize);
+
+    void invertedChanged(bool inverted);
+
+    void minimumChanged(qreal min);
+    void maximumChanged(qreal max);
+    void positionAtMinimumChanged(qreal min);
+    void positionAtMaximumChanged(qreal max);
+
+protected:
+    QRangeModel(QRangeModelPrivate &dd, QObject *parent);
+    QRangeModelPrivate* d_ptr;
+
+private:
+    Q_DISABLE_COPY(QRangeModel)
+    Q_DECLARE_PRIVATE(QRangeModel)
+
+};
+
+QML_DECLARE_TYPE(QRangeModel)
+
+#endif // QRANGEMODEL_H