| 1 | /**************************************************************************** |
| 2 | ** |
| 3 | ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). |
| 4 | ** Contact: http://www.qt-project.org/legal |
| 5 | ** |
| 6 | ** This file is part of the examples of the Qt Toolkit. |
| 7 | ** |
| 8 | ** $QT_BEGIN_LICENSE:BSD$ |
| 9 | ** You may use this file under the terms of the BSD license as follows: |
| 10 | ** |
| 11 | ** "Redistribution and use in source and binary forms, with or without |
| 12 | ** modification, are permitted provided that the following conditions are |
| 13 | ** met: |
| 14 | ** * Redistributions of source code must retain the above copyright |
| 15 | ** notice, this list of conditions and the following disclaimer. |
| 16 | ** * Redistributions in binary form must reproduce the above copyright |
| 17 | ** notice, this list of conditions and the following disclaimer in |
| 18 | ** the documentation and/or other materials provided with the |
| 19 | ** distribution. |
| 20 | ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names |
| 21 | ** of its contributors may be used to endorse or promote products derived |
| 22 | ** from this software without specific prior written permission. |
| 23 | ** |
| 24 | ** |
| 25 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 26 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 27 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 28 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 35 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
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| 39 | ****************************************************************************/ |
| 40 | |
| 41 | #ifndef EDGE_H |
| 42 | #define EDGE_H |
| 43 | |
| 44 | #include <QGraphicsItem> |
| 45 | |
| 46 | class Node; |
| 47 | |
| 48 | class Edge : public QGraphicsItem |
| 49 | { |
| 50 | public: |
| 51 | Edge(Node *sourceNode, Node *destNode); |
| 52 | |
| 53 | Node *sourceNode() const; |
| 54 | |
| 55 | Node *destNode() const; |
| 56 | |
| 57 | void adjust(); |
| 58 | |
| 59 | enum { Type = UserType + 2 }; |
| 60 | int type() const { return Type; } |
| 61 | |
| 62 | protected: |
| 63 | QRectF boundingRect() const; |
| 64 | void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget); |
| 65 | |
| 66 | private: |
| 67 | Node *source, *dest; |
| 68 | |
| 69 | QPointF sourcePoint; |
| 70 | QPointF destPoint; |
| 71 | qreal arrowSize; |
| 72 | }; |
| 73 | |
| 74 | #endif |