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QGVEdge.h
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1/***************************************************************
2QGVCore
3Copyright (c) 2014, Bergont Nicolas, All rights reserved.
4
5This library is free software; you can redistribute it and/or
6modify it under the terms of the GNU Lesser General Public
7License as published by the Free Software Foundation; either
8version 3.0 of the License, or (at your option) any later version.
9
10This library is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13Lesser General Public License for more details.
14
15You should have received a copy of the GNU Lesser General Public
16License along with this library.
17***************************************************************/
18#ifndef QGVEDGE_H
19#define QGVEDGE_H
20
21#include <QGraphicsItem>
22#include <QPen>
23
24#include "qgv.h"
25
26class QGVNode;
27class QGVScene;
28class QGVEdgePrivate;
29
34class QGVCORE_EXPORT QGVEdge : public QGraphicsItem {
35 public:
36 ~QGVEdge();
37
38 QString label() const;
39 QRectF boundingRect() const;
40 QPainterPath shape() const;
41
42 void setLabel(const QString &label);
43
44 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
45 QWidget *widget = 0);
46
47 void setAttribute(const QString &name, const QString &value);
48 QString getAttribute(const QString &name) const;
49
50 void updateLayout();
51
52 enum { Type = UserType + 3 };
53 int type() const { return Type; }
54
55 private:
56 QGVEdge(QGVEdgePrivate *edge, QGVScene *scene);
57
58 QPolygonF toArrow(const QLineF &normal) const;
59
60 friend class QGVScene;
61 // friend class QGVSubGraph;
62
63 QGVScene *_scene;
64 QGVEdgePrivate *_edge;
65
66 QPainterPath _path;
67 QPen _pen;
68 QPolygonF _head_arrow;
69 QPolygonF _tail_arrow;
70
71 QString _label;
72 QRectF _label_rect;
73};
74
75#endif // QGVEDGE_H
Definition: QGVEdgePrivate.h:6
Edge item.
Definition: QGVEdge.h:34
int type() const
Definition: QGVEdge.h:53
Node item.
Definition: QGVNode.h:34
GraphViz interactive scene.
Definition: QGVScene.h:36
#define QGVCORE_EXPORT
Definition: qgv.h:9