/***************************************************************************//**
 * @file example/LayoutSquare.h
 * @author  Marek M. Cel <marekcel@marekcel.pl>
 *
 * @section LICENSE
 *
 * Copyright (C) 2013 Marek M. Cel
 *
 * This file is part of QFlightInstruments. You can redistribute and modify it
 * under the terms of GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * Further information about the GNU General Public License can also be found
 * on the world wide web at http://www.gnu.org.
 *
 * ---
 *
 * Copyright (C) 2013 Marek M. Cel
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 ******************************************************************************/
#ifndef LAYOUTSQUARE_H
#define LAYOUTSQUARE_H

////////////////////////////////////////////////////////////////////////////////

#include <QLayout>
#include <QLayoutItem>
#include <QPointer>
#include <QRect>
#include <QWidgetItem>

////////////////////////////////////////////////////////////////////////////////

class LayoutSquare : public QLayout
{
    Q_OBJECT

public:

    explicit LayoutSquare( QWidget *parent, int spacing = -1 );

    explicit LayoutSquare( int spacing = -1 );

    ~LayoutSquare();

    void addItem( QLayoutItem *item );

    void addWidget( QWidget *widget );

    int count() const;

    Qt::Orientations expandingDirections() const;

    QRect geometry();

    bool hasHeightForWidth() const;

    bool hasItem() const;

    QLayoutItem* itemAt( int index ) const;

    QSize minimumSize() const;

    QLayoutItem* replaceItem( QLayoutItem *item );

    void setGeometry( const QRect &rect );

    QSize sizeHint() const;

    QLayoutItem* take();

    QLayoutItem* takeAt( int index );

private:

    QLayoutItem *m_item;

    QRect *m_rectLast;
    QRect *m_geometry;

    bool areRectsEqual( const QRect &rect_1, const QRect &rect_2 ) const;

    QPoint calculateCenterPnt( QSize fromSize, QSize itemSize ) const;

    QSize calculateProperSize( QSize fromSize ) const;

    void init( int spacing );

    void setRectLast( const QRect &rect );
};

////////////////////////////////////////////////////////////////////////////////

#endif // LAYOUTSQUARE_H
