graphicsnode.h

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#ifndef GRAPHICSNODE_H
#define GRAPHICSNODE_H
 
 
#include <QGraphicsItem>
#include <QObject>
#include <QPen>
#include <QPixmap>
#include <QPolygon>
 
class GraphicsWidget;
class QGraphicsSceneMouseEvent;
class GraphicsEdge;
class GraphicsNodeLabel;
class GraphicsNodeNumber;
 
using namespace std;
 
static const int TypeNode = QGraphicsItem::UserType+1;
static const int ZValueNode = 100;
static const int ZValueNodeHighlighted = 110;
 
 

//
 
class GraphicsNode :  public QObject,  public QGraphicsItem {
    Q_OBJECT
    Q_INTERFACES (QGraphicsItem)
 
public:
 
    GraphicsNode ( GraphicsWidget* gw,
                   const int &num,
                   const int &size,
                   const QString &color,
                   const QString &shape,
                   const QString &iconPath,
                   const bool &showNumbers,
                   const bool &numbersInside,
                   const QString &numberColor,
                   const int &numberSize,
                   const int &numDistance,
                   const bool &showLabels,
                   const QString &label,
                   const QString &labelColor,
                   const int &labelSize,
                   const int &labelDistance,
                   const bool &edgeHighlighting,
                   QPointF p
                   );
 
    ~GraphicsNode();
 
    enum { Type = UserType + 1 };
    int type() const { return Type; }
 
    QRectF boundingRect() const;
    QPainterPath shape() const;
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
 
    int nodeNumber() {return m_num;}
 
    void addInEdge( GraphicsEdge *edge ) ;
    void removeInEdge(GraphicsEdge*);
    void addOutEdge( GraphicsEdge *edge ) ;
    void removeOutEdge(GraphicsEdge*);
 
    void setSize(const int &);
    int size() const;
 
    void setShape (const QString, const QString &iconPath=QString());
    QString nodeShape() {return m_shape;}
 
    void setColor(const QString &colorName);
    void setColor(QColor color);
    QString color ();
 
    void addLabel();
    GraphicsNodeLabel* label();
    void deleteLabel();
    void setLabelVisibility(const bool &toggle);
    void setLabelSize(const int &size);
    void setLabelText ( const QString &label) ;
    void setLabelColor (const QString &color) ;
    QString labelText();
    void setLabelDistance(const int &distance);
 
    void addNumber () ;
    GraphicsNodeNumber* number();
    void deleteNumber();
    void setNumberVisibility(const bool &toggle);
    void setNumberInside(const bool &toggle);
    void setNumberSize(const int &size);
    void setNumberDistance(const int &distance);
    void setNumberColor(const QString &color);
 
    void setEdgeHighLighting(const bool &toggle) ;
 
 
protected:
 
    QVariant itemChange(GraphicsItemChange change, const QVariant &value);
//    void mousePressEvent(QGraphicsSceneMouseEvent *event);
//    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
//    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
//    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
 
signals: 
 
    void nodeClicked(GraphicsNode*);
 
 
private:
 
    GraphicsWidget *graphicsWidget;
    QPainterPath m_path;
    QPointF newPos;
    QPolygonF *m_poly_t;
    int m_num;
    int m_size, m_size_orig;
    int m_state;
    int m_numSize;
    int m_labelSize;
    int m_numberDistance;
    int m_labelDistance;
    QString m_shape, m_iconPath;
    QString m_numColor;
    QColor m_col, m_col_orig;
    QColor m_col_outline;
    QColor m_colHover;       // m_col.darker(120); rebuilt in setColor()
    QPen   m_penOutline;     // QPen(m_col_outline, 0); built once in constructor
    QPixmap m_pixmap;        // loaded in setShape() for icon-based shapes
    QString m_labelText, m_labelColor;
    bool m_hasNumber, m_hasLabel, m_hasNumberInside, m_edgeHighLighting;
    list<GraphicsEdge*> inEdgeList, outEdgeList;
    GraphicsNodeLabel *m_label;
    GraphicsNodeNumber *m_number;
};
 
#endif