src/DependencyTree/DependencyTree_Arrow.h

   1 // Copyright (C) 2014  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 class DependencyTree_Object;
  26
  27 class DependencyTree_Arrow : public QGraphicsLineItem
  28 {
  29
  30 public:
  31
  32   DependencyTree_Arrow( DependencyTree_Object* startItem, DependencyTree_Object* endItem,
  33                         QGraphicsItem* parent = 0, QGraphicsScene* scene = 0 );
  34   ~DependencyTree_Arrow();
  35
  36   virtual QRectF          boundingRect() const;
  37   virtual QPainterPath    shape() const;
  38
  39   void                    setColor(const QColor& );
  40   void                    setHighlightColor(const QColor& );
  41   void                    setSelectColor(const QColor& );
  42
  43   DependencyTree_Object*  getStartItem() const;
  44   DependencyTree_Object*  getEndItem() const;
  45
  46   void                    setIsBiLink( bool );
  47
  48 protected:
  49
  50   void                    paint( QPainter*, const QStyleOptionGraphicsItem*, QWidget* = 0 );
  51
  52 private:
  53
  54   QPolygonF               createArrowHead( QPointF , QPointF, bool = true );
  55
  56   DependencyTree_Object*  myStartItem;
  57   DependencyTree_Object*  myEndItem;
  58
  59   QColor                  myColor;
  60   QColor                  mySelectColor;
  61   QColor                  myHighlightColor;
  62
  63   QPolygonF               myArrowHead;
  64   QPolygonF               myReverseArrowHead;
  65
  66   bool                    myIsBiLink;
  67
  68   QRectF                  mySelfDependencyArrow;
  69
  70 };
  71
  72 #endif