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   this->setFlag( QGraphicsItem::ItemIsSelectable );\r
  19 }\r
  20 \r
  21 // -------------------------------------------------------------------------\r
  22 cpPipelineEditor::Connection::\r
  23 ~Connection( )\r
  24 {\r
  25   if( this->m_Port1 != NULL )\r
  26     this->m_Port1->connections( ).\r
  27       remove( this->m_Port1->connections( ).indexOf( this ) );\r
  28 \r
  29   if( this->m_Port2 != NULL )\r
  30     this->m_Port2->setConnection( NULL );\r
  31 }\r
  32 \r
  33 // -------------------------------------------------------------------------\r
  34 void cpPipelineEditor::Connection::\r
  35 setPos1( const QPointF& p )\r
  36 {\r
  37   this->m_Pos1 = p;\r
  38 }\r
  39 \r
  40 // -------------------------------------------------------------------------\r
  41 void cpPipelineEditor::Connection::\r
  42 setPos2( const QPointF& p )\r
  43 {\r
  44   this->m_Pos2 = p;\r
  45 }\r
  46 \r
  47 // -------------------------------------------------------------------------\r
  48 void cpPipelineEditor::Connection::\r
  49 setPort1( OutputPort* p )\r
  50 {\r
  51   if( p != NULL )\r
  52   {\r
  53     p->connections( ).append( this );\r
  54     this->m_Port1 = p;\r
  55 \r
  56   } // fi\r
  57 }\r
  58 \r
  59 // -------------------------------------------------------------------------\r
  60 void cpPipelineEditor::Connection::\r
  61 setPort2( InputPort* p )\r
  62 {\r
  63   if( p != NULL )\r
  64   {\r
  65     if( p->connection( ) == NULL )\r
  66     {\r
  67       p->setConnection( this );\r
  68       this->m_Port2 = p;\r
  69 \r
  70     } // fi\r
  71 \r
  72   } // fi\r
  73 }\r
  74 \r
  75 // -------------------------------------------------------------------------\r
  76 void cpPipelineEditor::Connection::\r
  77 updatePosFromPorts( )\r
  78 {\r
  79   if( this->m_Port1 != NULL )\r
  80     this->m_Pos1 =\r
  81       this->m_Port1->scenePos( ) +\r
  82       QPointF( this->m_Port1->radius( ), this->m_Port1->radius( ) );\r
  83   if( this->m_Port2 != NULL )\r
  84     this->m_Pos2 =\r
  85       this->m_Port2->scenePos( ) +\r
  86       QPointF( this->m_Port2->radius( ), this->m_Port2->radius( ) );\r
  87 }\r
  88 \r
  89 // -------------------------------------------------------------------------\r
  90 void cpPipelineEditor::Connection::\r
  91 updatePath( )\r
  92 {\r
  93   QPainterPath p;\r
  94   p.moveTo( this->m_Pos1 );\r
  95 \r
  96   qreal dx = this->m_Pos2.x( ) - this->m_Pos1.x( );\r
  97   qreal dy = this->m_Pos2.y( ) - this->m_Pos1.y( );\r
  98   QPointF c1( this->m_Pos1.x( ) + dx * 0.25, this->m_Pos1.y( ) + dy * 0.1 );\r
  99   QPointF c2( this->m_Pos1.x( ) + dx * 0.75, this->m_Pos1.y( ) + dy * 0.9 );\r
 100   p.cubicTo( c1, c2, this->m_Pos2 );\r
 101 \r
 102   this->setPath( p );\r
 103 }\r
 104 \r
 105 // -------------------------------------------------------------------------\r
 106 cpPipelineEditor::OutputPort* cpPipelineEditor::Connection::\r
 107 port1( ) const\r
 108 {\r
 109   return( this->m_Port1 );\r
 110 }\r
 111 \r
 112 // -------------------------------------------------------------------------\r
 113 cpPipelineEditor::InputPort* cpPipelineEditor::Connection::\r
 114 port2( ) const\r
 115 {\r
 116   return( this->m_Port2 );\r
 117 }\r
 118 \r
 119 #include <QPainter>\r
 120 \r
 121 // -------------------------------------------------------------------------\r
 122 void cpPipelineEditor::Connection::\r
 123 paint(\r
 124   QPainter* painter,\r
 125   const QStyleOptionGraphicsItem* option,\r
 126   QWidget* widget\r
 127   )\r
 128 {\r
 129   Q_UNUSED( option );\r
 130   Q_UNUSED( widget );\r
 131 \r
 132   if( this->isSelected( ) )\r
 133     painter->setPen( QPen( Qt::red, 5 ) );\r
 134   else\r
 135     painter->setPen( QPen( Qt::black, 2 ) );\r
 136   this->setBrush( Qt::NoBrush );\r
 137   painter->drawPath( this->path( ) );\r
 138 }\r
 139 \r
 140 // eof - $RCSfile$\r