/********************************************************************
 KWin - the KDE window manager
 This file is part of the KDE project.

Copyright (C) 2009 Nikhil Marathe <nsm.nikhil@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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, see <http://www.gnu.org/licenses/>.
*********************************************************************/

#include "spiral.h"

#include "client.h"
#include "tile.h"

namespace KWin
{

Spiral::Spiral( Workspace *w )
    : TilingLayout( w )
    {
    }

Spiral::~Spiral()
    {
    }

void Spiral::arrange( QRect wgeom )
    {
    QList<Tile *> tiled( tiles() );

    QMutableListIterator<Tile *> it(tiled);
    while( it.hasNext() )
        {
        Tile *t = it.next();
        if( t->ignoreGeometry() )
            it.remove();
        }

    int n = tiled.length();
    int i = 1;

    foreach( Tile *t, tiled )
        {
        if( t->floating() )
            continue;

        if( i < n )
            {
            if( i % 2 == 0 )
                wgeom.setHeight( wgeom.height() / 2 );
            else
                wgeom.setWidth( wgeom.width() / 2 );
            }

        if( i % 4 == 0 )
            wgeom.moveLeft( wgeom.x() - wgeom.width() );
        else if( i % 2 == 0 || ( i % 4 == 3 && i < n ) )
            wgeom.moveLeft( wgeom.x() + wgeom.width() );

        if( i % 4 == 1 && i != 1 )
            wgeom.moveTop( wgeom.y() - wgeom.height() );
        else if( i % 2 == 1 && i != 1 
                || ( i % 4 == 0 && i < n ) )
            wgeom.moveTop( wgeom.y() + wgeom.height() );

        t->setGeometry( wgeom );
        t->commit();
        i++;
        }
    }
}