Developer Documentation
connectionPoint.hh
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41 
42 
43 
44 #ifndef VSI_CONNECTIONPOINT_HH
45 #define VSI_CONNECTIONPOINT_HH
46 
47 //== INCLUDES =================================================================
48 #include <QGraphicsItem>
49 #include <QGraphicsLayoutItem>
50 #include <QGraphicsSceneMouseEvent>
51 #include <QString>
52 #include <QTimer>
53 #include <QPointF>
54 
55 //== NAMESPACES ===============================================================
56 namespace VSI {
57 
58 //== FORWARDDECLARATIONS ======================================================
59 class GraphicsScene;
60 class ElementInOut;
61 
62 //== CLASS DEFINITION =========================================================
63 
67 class ConnectionPoint : public QObject, public QGraphicsEllipseItem, public QGraphicsLayoutItem
68 {
69  Q_OBJECT
70  Q_INTERFACES(QGraphicsLayoutItem)
71 
72  public:
73 
75  enum State {
76  NoValue = 0,
77  Optional = 1,
78  RuntimeInput = 2,
79  UserInput = 3,
80  Connected = 4,
81  OutputNotConnected = 5
82  };
83 
85  ConnectionPoint (ElementInOut *_e, QGraphicsItem *_parent);
86 
89 
91  ElementInOut *inOut () const { return inout_; };
92 
94  QPointF connectPos ();
95 
97  virtual void setGeometry (const QRectF &_rect);
98 
100  void setState (State _state);
101 
103  void setWidth (int _width);
104 
105  // painting
106  void paint (QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget = 0);
107 
108  protected:
109 
110  // start a new connection on press
111  void mousePressEvent (QGraphicsSceneMouseEvent *_event);
112 
113  // highlight connection if mouse over
114  void hoverEnterEvent (QGraphicsSceneHoverEvent *_event);
115  void hoverLeaveEvent (QGraphicsSceneHoverEvent *_event);
116 
117  // size informations for layouting
118  virtual QSizeF sizeHint ( Qt::SizeHint _which, const QSizeF & _constraint = QSizeF()) const;
119 
120  private:
121 
122  ElementInOut *inout_;
123 
124  int width_;
125 };
126 
127 }
128 
129 #endif
void setState(State _state)
sets the state
ElementInOut * inOut() const
Input/output element.
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
State
State of the connection point.
void setWidth(int _width)
Sets the diameter.
ConnectionPoint(ElementInOut *_e, QGraphicsItem *_parent)
Constructor.
~ConnectionPoint()
Destructor.
QPointF connectPos()
Position for connections.