FlowWidget.h

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/*  Copyright (C) 2009 Jens-Malte Gottfried

    This file is part of Tuchulcha.
    
    Tuchulcha is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Tuchulcha 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Tuchulcha.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FLOWWIDGET_H_
#define FLOWWIDGET_H_

#include <QMdiSubWindow>

class QGraphicsView;
class NodeHandler;
class GraphModel;

class FlowWidget : public QMdiSubWindow {
    Q_OBJECT

public:

    FlowWidget(GraphModel* model, QWidget* parent = 0);

    GraphModel* model();

    const GraphModel* model() const;

public slots:
    void saveFlowChart() const;

    void zoomIn();

    void zoomOut();

    void zoomFit();

    void zoomFit(Qt::WindowStates oldState, Qt::WindowStates newState);

    void updateFileName(const QString& fileName );

    void modify(bool val = true );

signals:
    void modelChanged(GraphModel* model);

    void statusMessage(QString msg) const;

    void nodeTypeSelected(QString type) const;

protected:
    QGraphicsView* _viewer;
    NodeHandler* _nodehandler;

    virtual void closeEvent(QCloseEvent* closeEvent);

    virtual void wheelEvent(QWheelEvent* event);
};

#endif /* FLOWWIDGET_H_ */