src/gui/widgets/CFGScene.cxx

   1 #include "CFGScene.hxx"
   2
   3 void CFGScene::drawBackground(QPainter* painter, const QRectF & rect) {
   4     QGraphicsScene::drawBackground(painter, rect);
   5
   6     spaceWidgets();
   7
   8     for (BasicBlockWidget * widget : widgets) {
   9         QPointF kopf = widget->getEntry();
  10         painter->setPen(QColor(0x00, 0xff, 0x00, 0xff));
  11         painter->drawLine(kopf, kopf - QPointF(0, 20));
  12
  13         auto tails = widget->getExits();
  14         auto next = widget->getNext();
  15         if (NULL != next[0]) {
  16             if (NULL != next[1]) {
  17                 painter->setPen(QColor(0xff, 0x00, 0x00, 0xff));
  18                 painter->drawLine(std::get<0>(tails), std::get<0>(tails) + QPointF(0, 20));
  19                 drawLine(painter, std::get<0>(tails) + QPointF(0, 20), next[1]->getEntry() - QPointF(0, 20));
  20                 painter->setPen(QColor(0x00, 0xff, 0x00, 0xff));
  21                 painter->drawLine(std::get<2>(tails), std::get<2>(tails) + QPointF(0, 20));
  22                 drawLine(painter, std::get<2>(tails) + QPointF(0, 20), next[0]->getEntry() - QPointF(0, 20));
  23             } else {
  24                 painter->setPen(QColor(0x00, 0x00, 0x00, 0xff));
  25                 painter->drawLine(std::get<1>(tails), std::get<1>(tails) + QPointF(0, 20));
  26                 drawLine(painter, std::get<1>(tails) + QPointF(0, 20), next[0]->getEntry() - QPointF(0, 20));
  27             }
  28         }
  29     }
  30 }
  31
  32 void CFGScene::drawLine(QPainter* painter, QPointF from, QPointF to, bool left) {
  33     if ((to - from).y() > 0) {
  34         QPointF angle1(from + QPointF(0, (to - from).y())), angle2(to - QPointF(0, (to - from).y() / 2));
  35         painter->drawLine(from,   angle1);
  36         painter->drawLine(angle1, to);
  37     }
  38 }
  39
  40 void CFGScene::spaceWidgets() {
  41     bool changed = false;
  42     do {
  43         changed = false;
  44         for (BasicBlockWidget * widget : widgets) {
  45             QPointF out(std::get<0>(widget->getExits()));
  46             BasicBlockWidget ** next = widget->getNext();
  47
  48             if (NULL != next[0]
  49                 && (next[0]->getEntry() - widget->getEntry()).y() > 0
  50                 && (next[0]->getEntry() - out).y() < 50) {
  51                 next[0]->moveBy(0, 1);
  52                 changed = true;
  53             }
  54             if (NULL != next[1]
  55                 && (next[1]->getEntry() - widget->getEntry()).y() > 0
  56                 && (next[1]->getEntry() - out).y() < 50) {
  57                 next[1]->moveBy(0, 1);
  58                 changed = true;
  59             }
  60         }
  61     } while (changed);
  62 }