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diff --git a/Swift/QtUI/FlowLayout.h b/Swift/QtUI/FlowLayout.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 FLOWLAYOUT_H
+#define FLOWLAYOUT_H
+
+#include <QLayout>
+#include <QRect>
+#include <QStyle>
+class FlowLayout : public QLayout
+{
+public:
+    explicit FlowLayout(QWidget *parent, int margin = -1, int hSpacing = -1, int vSpacing = -1);
+    explicit FlowLayout(int margin = -1, int hSpacing = -1, int vSpacing = -1);
+    ~FlowLayout();
+
+    void addItem(QLayoutItem *item) override;
+    int horizontalSpacing() const;
+    int verticalSpacing() const;
+    Qt::Orientations expandingDirections() const override;
+    bool hasHeightForWidth() const override;
+    int heightForWidth(int) const override;
+    int count() const override;
+    QLayoutItem *itemAt(int index) const override;
+    QSize minimumSize() const override;
+    void setGeometry(const QRect &rect) override;
+    QSize sizeHint() const override;
+    QLayoutItem *takeAt(int index) override;
+
+private:
+    int doLayout(const QRect &rect, bool testOnly) const;
+    int smartSpacing(QStyle::PixelMetric pm) const;
+
+    QList<QLayoutItem *> itemList;
+    int m_hSpace;
+    int m_vSpace;
+};
+
+#endif // FLOWLAYOUT_H