Root/Software/sie_cg/block_editor/arrow.h

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41
42#ifndef ARROW_H
43#define ARROW_H
44
45#include <QGraphicsLineItem>
46#include <QtXml>
47#include "diagramtextitem.h"
48#include "diagramscene.h"
49
50QT_BEGIN_NAMESPACE
51class QGraphicsPolygonItem;
52class QGraphicsLineItem;
53class QGraphicsPathItem;
54class QGraphicsScene;
55class QRectF;
56class QGraphicsSceneMouseEvent;
57class QPainterPath;
58QT_END_NAMESPACE
59
60class lineItem;
61class DiagramScene;
62
63class Arrow : public QGraphicsPathItem
64{
65public:
66    enum { Type = UserType + 32 };
67
68    Arrow(QPointF startPoint,QPointF endPoint,
69          QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);
70
71    int type() const
72        { return Type; }
73    QRectF boundingRect() const;
74    QPainterPath shape() const;
75    void setColor(const QColor &color)
76        { myColor=color; }
77
78    void removeLine(lineItem *line);
79    void removeLines();
80    bool addLine(lineItem *line);
81    void setStartPoint(QPointF point){startPoint=point;}
82    void setEndPoint(QPointF point){endPoint=point;}
83
84    QPointF getStartPoint(){return startPoint;}
85    QPointF getEndPoint(){return endPoint;}
86
87    void createCorner(QPointF cornerPos, lineItem *inLine);
88    void createCorner(QPointF cornerPos, int index);
89    void moveCorner(QPointF cornerPos, lineItem *inLine, bool relative = 1);
90
91    void setVisibleCorners(bool visible);
92
93    void snapToGrid(QGraphicsSceneMouseEvent *event);
94
95    QDomDocument toXmlFormat();
96    QDomElement toXml(QDomDocument &) const;
97    void createFirstCorner();
98    void setSelectedArrows();
99
100public slots:
101    void updatePosition();
102
103protected:
104    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
105               QWidget *widget = 0);
106    void mousePressEvent(QGraphicsSceneMouseEvent *event);
107    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
108    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
109
110private:
111    QColor myColor;
112    QList<lineItem *> myLines;
113    QList<lineItem *> myCLines;
114    lineItem *SECLine;
115    QPointF startPoint;
116    QPointF endPoint;
117    QList<QPointF> myCorners;
118    QGraphicsScene *myOwnerScene;
119    qreal arrowSize;
120    bool moving;
121    QPointF previousPos;
122};
123
124#endif
125

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