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connection.hh
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
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7 * www.openflipper.org *
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10 * This file is part of OpenFlipper. *
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40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50 #ifndef VSI_CONNECTION_HH
51 #define VSI_CONNECTION_HH
52
53 //== INCLUDES =================================================================
54 #include <QGraphicsLineItem>
55 #include <QPointF>
56
57 //== NAMESPACES ===============================================================
58 namespace VSI {
59
60 //== FORWARDDECLARATIONS ======================================================
61
62 class ConnectionPoint;
63 class ElementInOut;
64 class ElementInput;
65 class ElementOutput;
66 class GraphicsScene;
67
68 //== CLASS DEFINITION =========================================================
69
72 class Connection : public QObject, public QGraphicsPathItem
73 {
74 Q_OBJECT
75
76 public:
77
79 Connection (ConnectionPoint *_start, QGraphicsScene *_scene);
80 Connection (ConnectionPoint *_start, ConnectionPoint *_end, QGraphicsScene *_scene);
81
83 ~Connection ();
84
86 void updatePositions ();
87
89 ElementInput *input ();
90
92 ElementOutput *output ();
93
95 const QPolygonF & way () const;
96
98 void invalidate ();
99
100 protected:
101
102 friend class GraphicsScene;
103
104 // mouse handling
105 void mouseMoveEvent (QGraphicsSceneMouseEvent *_event);
106 void mousePressEvent (QGraphicsSceneMouseEvent *_event);
107 void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
108
109 private:
110
111 // helper to localize a connection point
112 ConnectionPoint *cPointAt (QPointF _pnt);
113
114 // generates a curved line out of the way polygon
115 void updateLine ();
116
117 private:
118
119 QGraphicsItem *elementArea_;
120 GraphicsScene *scene_;
121
122 ConnectionPoint *p1_;
123 ConnectionPoint *p2_;
124
125 ConnectionPoint *old_;
126
127 QPolygonF way_;
128 };
129
130 }
131
132 #endif
VSI
Definition: baseWidget.cc:78
VSI::ElementOutput
Definition: elementOutput.hh:66
VSI::Connection::Connection
Connection(ConnectionPoint *_start, QGraphicsScene *_scene)
Constructor.
Definition: connection.cc:73
VSI::Connection::input
ElementInput * input()
Input of this connection.
Definition: connection.cc:245
VSI::GraphicsScene
Definition: graphicsScene.hh:86
VSI::ElementInput
Definition: elementInput.hh:73
VSI::ConnectionPoint
Definition: connectionPoint.hh:73
VSI::Connection::way
const QPolygonF & way() const
way of the connection
Definition: connection.cc:263
VSI::Connection::output
ElementOutput * output()
Output of this connection.
Definition: connection.cc:254
VSI::Connection::updatePositions
void updatePositions()
called to update position on element movement
Definition: connection.cc:238
VSI::Connection
Definition: connection.hh:72
VSI::Connection::invalidate
void invalidate()
invalidate way
Definition: connection.cc:269
VSI::Connection::~Connection
~Connection()
Destructor.
Definition: connection.cc:131