lib/cpBaseQtApplication/Pipeline/Connection.cxx

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