paint with mouse

[wysota]

Store data about the circles and access it during next mousepress.

void xxx::mousePressEvent(QMouseEvent *me){
  // assuming QVector<QPair<QPoint, int> > circles is a member variable of the class
  switch(circles.count()){
    case 0:  case 1:  circles << qMakePair(me->pos(), 30); break;
    case 2: circles.clear();
  }
  update();
}
void xxx::paintEvent(QPaintEvent *pe){
  QPainter painter(this);
  for(int i=0;i<circles.count();i++){
    painter.drawEllipse(circles[i].first, circles[i].second, circles[i].second);
  }
}

void xxx::mousePressEvent(QMouseEvent *me){
  // assuming QVector<QPair<QPoint, int> > circles is a member variable of the class
  switch(circles.count()){
    case 0:  case 1:  circles << qMakePair(me->pos(), 30); break;
    case 2: circles.clear();
  }
  update();
}
void xxx::paintEvent(QPaintEvent *pe){
  QPainter painter(this);
  for(int i=0;i<circles.count();i++){
    painter.drawEllipse(circles[i].first, circles[i].second, circles[i].second);
  }
}

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