CollapsibleTreeHeader.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
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#ifndef _MIRA_COLLAPSIBLETREEHEADER_H_
#define _MIRA_COLLAPSIBLETREEHEADER_H_

#include <QHeaderView>
#include <QPushButton>

class QTreeView;
class QMouseEvent;
class QPainter;

namespace mira {


class CollapsibleTreeHeader: public QHeaderView
{

public:

    CollapsibleTreeHeader(Qt::Orientation orientation, QTreeView* parent = 0);

protected:

    void paintSection( QPainter* painter,
                       QRect const& rect,
                       int logicalIndex) const;

    void mousePressEvent( QMouseEvent* event );

    void mouseReleaseEvent( QMouseEvent* event );

    void foldTree();

private:
    QIcon::State state;
    QScopedPointer<QPushButton> button;
};


} // namespace

#endif