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diff --git a/src/imports/layouts/qquickstacklayout_p.h b/src/imports/layouts/qquickstacklayout_p.h
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+++ b/src/imports/layouts/qquickstacklayout_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Layouts 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 QQUICKSTACKLAYOUT_H
+#define QQUICKSTACKLAYOUT_H
+
+#include <qquicklayout_p.h>
+
+class QQuickStackLayoutPrivate;
+
+class QQuickStackLayout : public QQuickLayout
+{
+    Q_OBJECT
+    Q_PROPERTY(int count READ count NOTIFY countChanged)
+    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
+
+public:
+    explicit QQuickStackLayout(QQuickItem *parent = 0);
+    int count() const;
+    int currentIndex() const;
+    void setCurrentIndex(int index);
+
+    void componentComplete() Q_DECL_OVERRIDE;
+    QSizeF sizeHint(Qt::SizeHint whichSizeHint) const Q_DECL_OVERRIDE;
+    void setAlignment(QQuickItem *item, Qt::Alignment align)  Q_DECL_OVERRIDE;
+    void invalidate(QQuickItem *childItem = 0)  Q_DECL_OVERRIDE;
+    void updateLayoutItems()  Q_DECL_OVERRIDE;
+    void rearrange(const QSizeF &) Q_DECL_OVERRIDE;
+
+    // iterator
+    Q_INVOKABLE QQuickItem *itemAt(int index) const Q_DECL_OVERRIDE;
+    int itemCount() const Q_DECL_OVERRIDE;
+    int indexOf(QQuickItem *item) const;
+
+
+
+signals:
+    void currentIndexChanged();
+    void countChanged();
+
+public slots:
+
+private:
+    static void collectItemSizeHints(QQuickItem *item, QSizeF *sizeHints);
+    bool shouldIgnoreItem(QQuickItem *item) const;
+    Q_DECLARE_PRIVATE(QQuickStackLayout)
+
+    QList<QQuickItem*> m_items;
+
+    typedef struct {
+        inline QSizeF &min() { return array[Qt::MinimumSize]; }
+        inline QSizeF &pref() { return array[Qt::PreferredSize]; }
+        inline QSizeF &max() { return array[Qt::MaximumSize]; }
+        QSizeF array[Qt::NSizeHints];
+    } SizeHints;
+
+    mutable QVector<SizeHints> m_cachedItemSizeHints;
+    mutable QSizeF m_cachedSizeHints[Qt::NSizeHints];
+};
+
+class QQuickStackLayoutPrivate : public QQuickLayoutPrivate
+{
+    Q_DECLARE_PUBLIC(QQuickStackLayout)
+public:
+    QQuickStackLayoutPrivate() : count(0), currentIndex(-1), explicitCurrentIndex(false) {}
+private:
+    int count;
+    int currentIndex;
+    bool explicitCurrentIndex;
+};
+
+#endif // QQUICKSTACKLAYOUT_H