QGVSubGraph.h

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/***************************************************************
QGVCore
Copyright (c) 2014, Bergont Nicolas, All rights reserved.

This library 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 3.0 of the License, or (at your option) any later version.

This library 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 this library.
***************************************************************/
#ifndef QGVSUBGRAPH_H
#define QGVSUBGRAPH_H

#include <QGraphicsItem>
#include <QPen>

#include "qgv.h"

class QGVNode;
class QGVEdge;
class QGVScene;
class QGVGraphPrivate;

class QGVCORE_EXPORT QGVSubGraph : public QGraphicsItem {
 public:
  ~QGVSubGraph();

  QString name() const;

  QGVNode* addNode(const QString& label);
  QGVSubGraph* addSubGraph(const QString& name, bool cluster = true);

  QRectF boundingRect() const;
  void paint(QPainter* painter, const QStyleOptionGraphicsItem* option,
             QWidget* widget = 0);
  void setAttribute(const QString& name, const QString& value);
  QString getAttribute(const QString& name) const;
  void updateLayout();

  enum { Type = UserType + 4 };
  int type() const { return Type; }

 private:
  friend class QGVScene;
  QGVSubGraph(QGVGraphPrivate* subGraph, QGVScene* scene);

  double _height, _width;
  QPen _pen;
  QBrush _brush;

  QString _label;
  QRectF _label_rect;

  QGVScene* _scene;
  QGVGraphPrivate* _sgraph;
  QList<QGVNode*> _nodes;
};

#endif  // QGVSUBGRAPH_H