AlignAction.h

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/*
    This file is part of Rocs.
    Copyright 2008       Tomaz Canabrava <tomaz.canabrava@gmail.com>
    Copyright 2008       Ugo Sangiori <ugorox@gmail.com>
    Copyright 2011-2012  Andreas Cord-Landwehr <cola@uni-paderborn.de>

    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/>.
*/

#ifndef ALIGNACTION_H
#define ALIGNACTION_H

#include "VisualEditorExport.h"
#include <KAction>
#include "Data.h"
#include "Scene/GraphScene.h"

class VISUALEDITOR_EXPORT AlignAction : public KAction
{
    Q_OBJECT
public:
    enum Orientation {Left, Right, Top, Bottom, HCenter, VCenter, Circle, MinCutTree};

    AlignAction(const QString& tooltip, AlignAction::Orientation o, GraphScene *gc);

    void registerData(DataList dataList);

    void unsetData();

public slots:
    void align();

private:
    void setupOrientation(Orientation o);

    void alignY(DataList dataList);

    void alignX(DataList dataList);

    void alignCircle(DataList dataList);

    void alignMinCutTree(DataList dataList);

    static bool leftLessThan(DataPtr n1, DataPtr n2) {
        return n1->x() < n2->x();
    }

    static bool rightLessThan(DataPtr n1, DataPtr n2) {
        return n1->x() > n2->x();
    }

    static bool topLessThan(DataPtr n1, DataPtr n2) {
        return n1->y() < n2->y();
    }

    static bool bottomLessThan(DataPtr n1, DataPtr n2) {
        return n1->y() > n2->y();
    }


    Orientation _orientation;   // the configured orientation
    DataList _registeredData;   // possibly registered
    GraphScene *_graphScene;    // graph scene that contains selected nodes
};

#endif