Developer Documentation
connectionPoint.hh
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49 
50 #ifndef VSI_CONNECTIONPOINT_HH
51 #define VSI_CONNECTIONPOINT_HH
52 
53 //== INCLUDES =================================================================
54 #include <QGraphicsItem>
55 #include <QGraphicsLayoutItem>
56 #include <QGraphicsSceneMouseEvent>
57 #include <QString>
58 #include <QTimer>
59 #include <QPointF>
60 
61 //== NAMESPACES ===============================================================
62 namespace VSI {
63 
64 //== FORWARDDECLARATIONS ======================================================
65 class GraphicsScene;
66 class ElementInOut;
67 
68 //== CLASS DEFINITION =========================================================
69 
73 class ConnectionPoint : public QObject, public QGraphicsEllipseItem, public QGraphicsLayoutItem
74 {
75  Q_OBJECT
76  Q_INTERFACES(QGraphicsLayoutItem)
77 
78  public:
79 
81  enum State {
82  NoValue = 0,
83  Optional = 1,
84  RuntimeInput = 2,
85  UserInput = 3,
86  Connected = 4,
87  OutputNotConnected = 5
88  };
89 
91  ConnectionPoint (ElementInOut *_e, QGraphicsItem *_parent);
92 
95 
97  ElementInOut *inOut () const { return inout_; };
98 
100  QPointF connectPos ();
101 
103  virtual void setGeometry (const QRectF &_rect);
104 
106  void setState (State _state);
107 
109  void setWidth (int _width);
110 
111  // painting
112  void paint (QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget = 0);
113 
114  protected:
115 
116  // start a new connection on press
117  void mousePressEvent (QGraphicsSceneMouseEvent *_event);
118 
119  // highlight connection if mouse over
120  void hoverEnterEvent (QGraphicsSceneHoverEvent *_event);
121  void hoverLeaveEvent (QGraphicsSceneHoverEvent *_event);
122 
123  // size informations for layouting
124  virtual QSizeF sizeHint ( Qt::SizeHint _which, const QSizeF & _constraint = QSizeF()) const;
125 
126  private:
127 
128  ElementInOut *inout_;
129 
130  int width_;
131 };
132 
133 }
134 
135 #endif
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
QPointF connectPos()
Position for connections.
State
State of the connection point.
void setState(State _state)
sets the state
void setWidth(int _width)
Sets the diameter.
~ConnectionPoint()
Destructor.
ConnectionPoint(ElementInOut *_e, QGraphicsItem *_parent)
Constructor.
ElementInOut * inOut() const
Input/output element.