src/DependencyTree/DependencyTree_Arrow.h

   1 // Copyright (C) 2014-2020  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