FlowLayout.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial 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 MLAB or NICR.
 *
 * 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.GPL3 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.
 *   Alternatively you may (at your option) use any later version of the GNU
 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
 * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF "MLAB" OR
 * "NICR" HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * "MLAB" AND "NICR" SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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 */

#ifndef MIRA_FLOWLAYOUT_H
#define MIRA_FLOWLAYOUT_H

#include <utility>
#include <QRect>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QWidgetItem>
#include <QStyle>

namespace mira {


class FlowLayout : public QLayout
{
public:
    FlowLayout(QWidget* parent = NULL);
    ~FlowLayout();

    void addItem(QLayoutItem *item, int stretch);

    // implementation of QLayout
    void addItem(QLayoutItem *item) {
        addItem(item,0);
    }

    Qt::Orientations expandingDirections() const;
    bool hasHeightForWidth() const;
    int heightForWidth(int) const;
    int count() const;
    QLayoutItem *itemAt(int index) const;
    QSize minimumSize() const;
    void setGeometry(const QRect &rect);
    QSize sizeHint() const;
    QLayoutItem *takeAt(int index);

private:

    void init();
    void clearLayouts();

    QList<std::pair<QLayoutItem*,int>> mItemList;
    QVBoxLayout* mVLayout;
    QList<QHBoxLayout*> mHLayouts;
};


}

#endif