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DependencyTree_Arrow.h
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1 // Copyright (C) 2014-2016 CEA/DEN, EDF R&D, OPEN CASCADE
2 //
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
7 //
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
12 //
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 //
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
18 //
19 
20 #ifndef DEPENDENCYTREE_ARROW_H
21 #define DEPENDENCYTREE_ARROW_H
22 
23 #include <QGraphicsLineItem>
24 
25 #include "DependencyTree.h"
26 
27 class DependencyTree_Object;
28 
29 class DEPENDENCYTREE_EXPORT DependencyTree_Arrow : public QGraphicsLineItem
30 {
31 
32 public:
33 
34  DependencyTree_Arrow( DependencyTree_Object* startItem, DependencyTree_Object* endItem,
35  QGraphicsItem* parent = 0, QGraphicsScene* scene = 0 );
36  ~DependencyTree_Arrow();
37 
38  virtual QRectF boundingRect() const;
39  virtual QPainterPath shape() const;
40 
41  void setColor(const QColor& );
42  void setHighlightColor(const QColor& );
43  void setSelectColor(const QColor& );
44 
45  DependencyTree_Object* getStartItem() const;
46  DependencyTree_Object* getEndItem() const;
47 
48  void setIsBiLink( bool );
49 
50 protected:
51 
52  void paint( QPainter*, const QStyleOptionGraphicsItem*, QWidget* = 0 );
53 
54 private:
55 
56  QPolygonF createArrowHead( QPointF , QPointF, bool = true );
57 
58  DependencyTree_Object* myStartItem;
59  DependencyTree_Object* myEndItem;
60 
61  QColor myColor;
62  QColor mySelectColor;
63  QColor myHighlightColor;
64 
65  QPolygonF myArrowHead;
66  QPolygonF myReverseArrowHead;
67 
68  bool myIsBiLink;
69 
70  QRectF mySelfDependencyArrow;
71 
72  QLineF myLine;
73 
74 };
75 
76 #endif