appli/cpPipelineEditor/Edge.cxx

   1 #include "Edge.h"
   2 #include "Node.h"
   3
   4 #include <QPainter>
   5
   6 // -------------------------------------------------------------------------
   7 PipelineEditor::Edge::
   8 Edge(
   9   const Node* nsrc, const Node* ndes,
  10   const QRectF* rsrc, const QRectF* rdes
  11   )
  12   : QGraphicsItem( NULL )
  13 {
  14   this->setAcceptedMouseButtons( 0 );
  15   this->m_SrcNode = nsrc;
  16   this->m_DesNode = ndes;
  17   this->m_SrcRect = rsrc;
  18   this->m_DesRect = rdes;
  19   this->adjust( );
  20 }
  21
  22 // -------------------------------------------------------------------------
  23 PipelineEditor::Edge::
  24 ~Edge( )
  25 {
  26 }
  27
  28 // -------------------------------------------------------------------------
  29 const QRectF* PipelineEditor::Edge::
  30 source( ) const
  31 {
  32   return( this->m_SrcRect );
  33 }
  34
  35 // -------------------------------------------------------------------------
  36 const QRectF* PipelineEditor::Edge::
  37 destination( ) const
  38 {
  39   return( this->m_DesRect );
  40 }
  41
  42 // -------------------------------------------------------------------------
  43 void PipelineEditor::Edge::
  44 adjust( )
  45 {
  46
  47   /* TODO
  48      if( this->m_Src == NULL || this->m_Des == NULL )
  49      return;
  50
  51      QLineF line(
  52      this->mapFromParent( this->m_Src->center( ) ),
  53      this->mapFromParent( this->m_Des->center( ) )
  54      );
  55      // TODO: qreal length = line.length( );
  56      this->prepareGeometryChange( );
  57      if( length > qreal( 20 ) )
  58      {
  59      QPointF edgeOffset(
  60      ( line.dx( ) * qreal( 10 ) ) / length,
  61      ( line.dy( ) * qreal( 10 ) ) / length
  62      );
  63      this->m_SrcPoint = line.p1( ) + edgeOffset;
  64      this->m_DesPoint = line.p2( ) - edgeOffset;
  65      }
  66      else
  67      this->m_SrcPoint = this->m_DesPoint = line.p1( );
  68   */
  69 }
  70
  71 // -------------------------------------------------------------------------
  72 QRectF PipelineEditor::Edge::
  73 boundingRect( ) const
  74 {
  75   if( this->m_SrcRect == NULL || this->m_DesRect == NULL )
  76     return( QRectF( ) );
  77
  78   /*
  79     qreal penWidth = 1;
  80     qreal extra = ( penWidth + this->m_ArrowSize ) / qreal( 2 );
  81   */
  82   qreal extra = qreal( 1 );
  83   return(
  84     QRectF(
  85       this->m_SrcRect->center( ),
  86       QSizeF(
  87         this->m_DesRect->center( ).x( ) - this->m_SrcRect->center( ).x( ),
  88         this->m_DesRect->center( ).y( ) - this->m_SrcRect->center( ).y( )
  89         )
  90       ).normalized( ).adjusted( -extra, -extra, extra, extra )
  91     );
  92 }
  93
  94 // -------------------------------------------------------------------------
  95 void PipelineEditor::Edge::
  96 paint(
  97   QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget
  98   )
  99 {
 100   /* TODO
 101     if( this->m_Src == NULL || this->m_Des == NULL )
 102     return;
 103   */
 104
 105   // TODO: QLineF line( this->m_Src->center( ), this->m_Des->center( ) );
 106   QLineF line(
 107     this->m_SrcNode->mapToScene( this->m_SrcRect->center( ) ),
 108     this->m_DesNode->mapToScene( this->m_DesRect->center( ) )
 109     );
 110
 111   if( qFuzzyCompare( line.length(), qreal( 0 ) ) )
 112     return;
 113
 114   // Draw the line itself
 115   painter->setPen(
 116     QPen( Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin )
 117     );
 118   painter->drawLine( line );
 119
 120   /* TODO
 121      // Draw the arrows
 122      double angle = ::acos(line.dx() / line.length());
 123      if (line.dy() >= 0)
 124      angle = TwoPi - angle;
 125
 126      QPointF destArrowP1 = destPoint + QPointF(
 127      sin(angle - Pi / 3) * arrowSize,
 128      cos(angle - Pi / 3) * arrowSize
 129      );
 130      QPointF destArrowP2 = destPoint + QPointF(
 131      sin(angle - Pi + Pi / 3) * arrowSize,
 132      cos(angle - Pi + Pi / 3) * arrowSize
 133      );
 134      QPointF center = sourcePoint + destPoint;
 135      center /= 2;
 136
 137      painter->setBrush(Qt::black);
 138      painter->drawPolygon(QPolygonF() << line.p2() << destArrowP1 << destArrowP2);
 139      painter->drawText( center, "Edge!!!" );
 140   */
 141 }
 142
 143 // eof - $RCSfile$