RetroShare/plugins/qdiagram_plugin/diagrampathitem.h

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#ifndef DIAGRAMPATHITEM_H
#define DIAGRAMPATHITEM_H

#include <QGraphicsPixmapItem>
#include <QList>

QT_BEGIN_NAMESPACE
class QPixmap;
class QGraphicsItem;
class QGraphicsScene;
class QTextEdit;
class QGraphicsSceneMouseEvent;
class QMenu;
class QGraphicsSceneContextMenuEvent;
class QPainter;
class QStyleOptionGraphicsItem;
class QWidget;
class QPolygonF;
QT_END_NAMESPACE

//! [0]
class DiagramPathItem : public QGraphicsPathItem
{
public:
    enum { Type = UserType + 6 };
    enum DiagramType { Path, Start, End, StartEnd };

    DiagramPathItem(DiagramType diagramType, QMenu *contextMenu,
        QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);
    DiagramPathItem(QMenu *contextMenu,
    		QGraphicsItem *parent, QGraphicsScene *scene);//constructor fuer Vererbung
    DiagramPathItem(const DiagramPathItem& diagram);//copy constructor

    virtual DiagramPathItem* copy();

    void append(const QPointF point);
    void remove();
    void updateLast(const QPointF point);

    DiagramType diagramType() const
        { return myDiagramType; }

    virtual void setDiagramType(DiagramType type)
		{ myDiagramType=type; }

    QPixmap image() const;
    QPixmap icon();
    QPainterPath getPath() const;
    QList<QPointF> getPoints()
		{ return myPoints; }
    int type() const
        { return Type;}
    void setHandlerWidth(const qreal width)
    {
    	myHandlerWidth = width;
    }

protected:
    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
    QVariant itemChange(GraphicsItemChange change, const QVariant &value);
    void createPath();
    QPainterPath createArrow(QPointF p1, QPointF p2) const;
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *);
    QRectF boundingRect() const;
    QPainterPath shape() const;
    bool hasClickedOn(QPointF press_point, QPointF point) const;
    void mousePressEvent(QGraphicsSceneMouseEvent *e);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *e);
    void hoverEnterEvent(QGraphicsSceneHoverEvent *e);
    void hoverLeaveEvent(QGraphicsSceneHoverEvent *e);
    QPointF onGrid(QPointF pos);

private:
    DiagramType myDiagramType;
    QMenu *myContextMenu;
    QList<QPointF> myPoints;
    qreal len,breite;
    int mySelPoint,myHoverPoint;
    qreal myHandlerWidth;

};
//! [0]

#endif