lib/cpPipelineEditor/Connection.cxx

   1 #include "Connection.h"\r
   2 #include "Port.h"\r
   3 \r
   4 #include <QBrush>\r
   5 #include <QPen>\r
   6 #include <QGraphicsScene>\r
   7 \r
   8 // -------------------------------------------------------------------------\r
   9 cpPipelineEditor::Connection::\r
  10 Connection( QGraphicsItem* parent, QGraphicsScene* scene )\r
  11   : Superclass( parent, scene )\r
  12 {\r
  13   this->setPen( QPen( Qt::black, 2 ) );\r
  14   this->setBrush( Qt::NoBrush );\r
  15   this->setZValue( -1 );\r
  16   this->m_Port1 = NULL;\r
  17   this->m_Port2 = NULL;\r
  18 }\r
  19 \r
  20 // -------------------------------------------------------------------------\r
  21 cpPipelineEditor::Connection::\r
  22 ~Connection( )\r
  23 {\r
  24   if( this->m_Port1 != NULL )\r
  25     this->m_Port1->connections( ).\r
  26       remove( this->m_Port1->connections( ).indexOf( this ) );\r
  27 \r
  28   if( this->m_Port2 != NULL )\r
  29     this->m_Port2->setConnection( NULL );\r
  30 }\r
  31 \r
  32 // -------------------------------------------------------------------------\r
  33 void cpPipelineEditor::Connection::\r
  34 setPos1( const QPointF& p )\r
  35 {\r
  36   this->m_Pos1 = p;\r
  37 }\r
  38 \r
  39 // -------------------------------------------------------------------------\r
  40 void cpPipelineEditor::Connection::\r
  41 setPos2( const QPointF& p )\r
  42 {\r
  43   this->m_Pos2 = p;\r
  44 }\r
  45 \r
  46 // -------------------------------------------------------------------------\r
  47 void cpPipelineEditor::Connection::\r
  48 setPort1( OutputPort* p )\r
  49 {\r
  50   if( p != NULL )\r
  51   {\r
  52     p->connections( ).append( this );\r
  53     this->m_Port1 = p;\r
  54 \r
  55   } // fi\r
  56 }\r
  57 \r
  58 // -------------------------------------------------------------------------\r
  59 void cpPipelineEditor::Connection::\r
  60 setPort2( InputPort* p )\r
  61 {\r
  62   if( p != NULL )\r
  63   {\r
  64     if( p->connection( ) == NULL )\r
  65     {\r
  66       p->setConnection( this );\r
  67       this->m_Port2 = p;\r
  68 \r
  69     } // fi\r
  70 \r
  71   } // fi\r
  72 }\r
  73 \r
  74 // -------------------------------------------------------------------------\r
  75 void cpPipelineEditor::Connection::\r
  76 updatePosFromPorts( )\r
  77 {\r
  78   if( this->m_Port1 != NULL )\r
  79     this->m_Pos1 =\r
  80       this->m_Port1->scenePos( ) +\r
  81       QPointF( this->m_Port1->radius( ), this->m_Port1->radius( ) );\r
  82   if( this->m_Port2 != NULL )\r
  83     this->m_Pos2 =\r
  84       this->m_Port2->scenePos( ) +\r
  85       QPointF( this->m_Port2->radius( ), this->m_Port2->radius( ) );\r
  86 }\r
  87 \r
  88 // -------------------------------------------------------------------------\r
  89 void cpPipelineEditor::Connection::\r
  90 updatePath( )\r
  91 {\r
  92   QPainterPath p;\r
  93   p.moveTo( this->m_Pos1 );\r
  94 \r
  95   qreal dx = this->m_Pos2.x( ) - this->m_Pos1.x( );\r
  96   qreal dy = this->m_Pos2.y( ) - this->m_Pos1.y( );\r
  97   QPointF c1( this->m_Pos1.x( ) + dx * 0.25, this->m_Pos1.y( ) + dy * 0.1 );\r
  98   QPointF c2( this->m_Pos1.x( ) + dx * 0.75, this->m_Pos1.y( ) + dy * 0.9 );\r
  99   p.cubicTo( c1, c2, this->m_Pos2 );\r
 100 \r
 101   this->setPath( p );\r
 102 }\r
 103 \r
 104 // -------------------------------------------------------------------------\r
 105 cpPipelineEditor::OutputPort* cpPipelineEditor::Connection::\r
 106 port1( ) const\r
 107 {\r
 108   return( this->m_Port1 );\r
 109 }\r
 110 \r
 111 // -------------------------------------------------------------------------\r
 112 cpPipelineEditor::InputPort* cpPipelineEditor::Connection::\r
 113 port2( ) const\r
 114 {\r
 115   return( this->m_Port2 );\r
 116 }\r
 117 \r
 118 // eof - $RCSfile$\r