iLab Neuromorphic Robotics Toolkit  0.1
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ConnectionRequest.H
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1 /*! @file
2  @author Unknown
3  @copyright GNU Public License (GPL v3)
4  @section License
5  @verbatim
6  // ////////////////////////////////////////////////////////////////////////
7  // The iLab Neuromorphic Robotics Toolkit (NRT) //
8  // Copyright 2010-2012 by the University of Southern California (USC) //
9  // and the iLab at USC. //
10  // //
11  // iLab - University of Southern California //
12  // Hedco Neurociences Building, Room HNB-10 //
13  // Los Angeles, Ca 90089-2520 - USA //
14  // //
15  // See http://ilab.usc.edu for information about this project. //
16  // ////////////////////////////////////////////////////////////////////////
17  // This file is part of The iLab Neuromorphic Robotics Toolkit. //
18  // //
19  // The iLab Neuromorphic Robotics Toolkit is free software: you can //
20  // redistribute it and/or modify it under the terms of the GNU General //
21  // Public License as published by the Free Software Foundation, either //
22  // version 3 of the License, or (at your option) any later version. //
23  // //
24  // The iLab Neuromorphic Robotics Toolkit is distributed in the hope //
25  // that it will be useful, but WITHOUT ANY WARRANTY; without even the //
26  // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
27  // PURPOSE. See the GNU General Public License for more details. //
28  // //
29  // You should have received a copy of the GNU General Public License //
30  // along with The iLab Neuromorphic Robotics Toolkit. If not, see //
31  // <http://www.gnu.org/licenses/>. //
32  // ////////////////////////////////////////////////////////////////////////
33  @endverbatim */
34 #ifndef SRC_APPS_NRTDESIGNER_CONNECTIONREQUEST_H
35 #define SRC_APPS_NRTDESIGNER_CONNECTIONREQUEST_H
36 
37 #include "Common.H"
38 
40 NRT_BEGIN_UNCHECKED_INCLUDES
41 #include <QGraphicsLineItem>
42 NRT_END_UNCHECKED_INCLUDES
43 
44 class Port;
45 class QGraphicsDropShadowEffect;
46 
47 //! Graphical representation for a request for connection
48 /*! Shows all possible connections and which one would be selected as the user moves the mouse around */
49 class ConnectionRequest : public QObject, public QGraphicsPathItem
50 {
51  Q_OBJECT
52 
53  public:
54  ConnectionRequest(Port * sourcePort_, Port * sinkPort_);
56  void recalculateLine();
57  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
58 
59  //! Set the free end position as the user is dragging the connection request around
60  void setFreeEndPos(QPointF pos);
61 
62  Port * sourcePort() const { return itsSourcePort; }
63  Port * sinkPort() const { return itsSinkPort; }
64  Port * originPort() const { return itsOriginPort; }
65 
66  private:
67  QGraphicsDropShadowEffect * makeGlowEffect() const;
68  QList<Port*> getPotentialPorts(Port * origPort);
69  Port * itsSourcePort;
70  Port * itsSinkPort;
71  Port * itsOriginPort;
72  QPainterPath itsShape;
73  QMap<Port *, QPainterPath> itsPotentialPortPaths;
74  QPainterPath itsBestPath;
75 };
76 
77 #endif // SRC_APPS_NRTDESIGNER_CONNECTIONREQUEST_H