Developer Documentation

connection.hh
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40 \*===========================================================================*/
41
42
43
44 #ifndef VSI_CONNECTION_HH
45 #define VSI_CONNECTION_HH
46
47 //== INCLUDES =================================================================
48 #include <QGraphicsLineItem>
49 #include <QPointF>
50
51 //== NAMESPACES ===============================================================
52 namespace VSI {
53
54 //== FORWARDDECLARATIONS ======================================================
55
56 class ConnectionPoint;
57 class ElementInOut;
58 class ElementInput;
59 class ElementOutput;
60 class GraphicsScene;
61
62 //== CLASS DEFINITION =========================================================
63
66 class Connection : public QObject, public QGraphicsPathItem
67 {
68 Q_OBJECT
69
70 public:
71
73 Connection (ConnectionPoint *_start, QGraphicsScene *_scene);
74 Connection (ConnectionPoint *_start, ConnectionPoint *_end, QGraphicsScene *_scene);
75
77 ~Connection ();
78
80 void updatePositions ();
81
83 ElementInput *input ();
84
86 ElementOutput *output ();
87
89 const QPolygonF & way () const;
90
92 void invalidate ();
93
94 protected:
95
96 friend class GraphicsScene;
97
98 // mouse handling
99 void mouseMoveEvent (QGraphicsSceneMouseEvent *_event);
100 void mousePressEvent (QGraphicsSceneMouseEvent *_event);
101 void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
102
103 private:
104
105 // helper to localize a connection point
106 ConnectionPoint *cPointAt (QPointF _pnt);
107
108 // generates a curved line out of the way polygon
109 void updateLine ();
110
111 private:
112
113 QGraphicsItem *elementArea_;
114 GraphicsScene *scene_;
115
116 ConnectionPoint *p1_;
117 ConnectionPoint *p2_;
118
119 ConnectionPoint *old_;
120
121 QPolygonF way_;
122 };
123
124 }
125
126 #endif
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::Connection::~Connection
~Connection()
Destructor.
Definition: connection.cc:125
VSI::ElementInput
Definition: elementInput.hh:67
VSI::Connection::updatePositions
void updatePositions()
called to update position on element movement
Definition: connection.cc:232
VSI::Connection
Definition: connection.hh:66
VSI::ElementOutput
Definition: elementOutput.hh:60
VSI::Connection::way
const QPolygonF & way() const
way of the connection
Definition: connection.cc:257
VSI::Connection::invalidate
void invalidate()
invalidate way
Definition: connection.cc:263
VSI::Connection::output
ElementOutput * output()
Output of this connection.
Definition: connection.cc:248
VSI::Connection::input
ElementInput * input()
Input of this connection.
Definition: connection.cc:239
VSI
Definition: baseWidget.cc:72
VSI::Connection::Connection
Connection(ConnectionPoint *_start, QGraphicsScene *_scene)
Constructor.
Definition: connection.cc:67
VSI::ConnectionPoint
Definition: connectionPoint.hh:67