File indexing completed on 2024-12-08 11:06:53

 //
 // C++ Implementation: outputflownode
 //
 // Description:
 //
 //
 // Author: David Saxton <david@bluehaze.org>, (C) 2008
 //
 // Copyright: See COPYING file that comes with this distribution
 //
 //
 #include "outputflownode.h"
 #include "connector.h"
 
 #include <QPainter>
 
 #include <ktechlab_debug.h>
 
 OutputFlowNode::OutputFlowNode(ICNDocument *_icnView, int dir, const QPoint &pos, QString *id)
     : FPNode(_icnView, Node::fp_out, dir, pos, id)
 {
 }
 
 OutputFlowNode::~OutputFlowNode()
 {
 }
 
 bool OutputFlowNode::acceptInput() const
 {
     return false;
 }
 
 bool OutputFlowNode::acceptOutput() const
 {
     return true;
 }
 
 void OutputFlowNode::addInputConnector(Connector *const /*connector*/)
 {
     qCDebug(KTL_LOG) << "BUG: trying to add input connector to an output node";
 }
 
 inline QPolygon arrowPoints(int dir)
 {
     QPolygon pa(3);
     switch (dir) {
     case 0:
         pa[0] = QPoint(3, 0);
         pa[1] = QPoint(0, 2);
         pa[2] = QPoint(0, -2);
         break;
     case 180:
         pa[0] = QPoint(-3, 0);
         pa[1] = QPoint(0, 2);
         pa[2] = QPoint(0, -2);
         break;
     case 90:
         pa[0] = QPoint(2, 0);
         pa[1] = QPoint(-2, 0);
         pa[2] = QPoint(0, 3);
         break;
     case 270:
         pa[0] = QPoint(2, 0);
         pa[1] = QPoint(-2, 0);
         pa[2] = QPoint(0, -3);
         break;
     };
     return pa;
 }
 
 void OutputFlowNode::drawShape(QPainter &p)
 {
     const int _x = int(x());
     const int _y = int(y());
 
     if (m_dir == 0)
         p.drawLine(_x, _y, _x - 8, _y);
     else if (m_dir == 90)
         p.drawLine(_x, _y, _x, _y - 8);
     else if (m_dir == 180)
         p.drawLine(_x, _y, _x + 8, _y);
     else if (m_dir == 270)
         p.drawLine(_x, _y, _x, _y + 8);
 
     QPolygon pa(3);
 
     switch (m_dir) {
     case 0: // right
         pa = arrowPoints(0);
         break;
     case 180: // left
         pa = arrowPoints(180);
         break;
     case 90: // down
         pa = arrowPoints(90);
         break;
     case 270: // up
         pa = arrowPoints(270);
         break;
     default:
         qCCritical(KTL_LOG) << "BUG: m_dir = " << m_dir;
     }
 
     // Note: I have not tested the positioning of the arrows for all combinations.
     // In fact, most almost definitely do not work. So feel free to change the code
     // as you see fit if necessary.
 
     if (m_dir == 0)
         pa.translate(-5, 0);
     else if (m_dir == 90)
         pa.translate(0, -5);
     else if (m_dir == 180)
         pa.translate(5, 0);
     else if (m_dir == 270)
         pa.translate(0, 5);
 
     pa.translate(_x, _y);
     p.drawPolygon(pa);
 }