Trackpad event Mac distance from 2 Finger to zoom in or out depend finger direction...

[patrik08]

9 years a go i have found a trackpad event to exact know the distance from 2 finger..
I can not find this event from mac trackpad distance ..
have anybody made so one?

Now i have only controll Key_Up & down at moment... is a QAbstractScrollArea to play document & pdf e select text..

/*   Qt::Key_Down	0x01000015
Qt::Key_PageUp	0x01000016  Qt::Key_Control
Qt::Key_PageDown */
void DrawDoument::keyPressEvent(QKeyEvent * e) {
  bool CONTROLLACTIVE, savekey = false;

   if (Qt::Key_Meta == e->key() ||
                 Qt::Key_Control == e->key() ||
                 Qt::Key_Escape == e->key() ) { /// window & mac || Qt::Key_Up == e->key()  || Qt::Key_Down == e->key()
      lastkeyMETA = true;  /// reset on keyReleaseEvent
       if (Beeboncontroll) {
        QApplication::beep();
       }
    }
    //// qDebug() <<  __FUNCTION__ << " - e->key()" << e->key() << " lastkeyMETA:" << lastkeyMETA;
    if (lastkeyMETA) {
         if (Qt::Key_PageUp == e->key() ) {
                //// qDebug() <<  "salire su page scroll";
                e->accept();
                emit newdata();
                return;
          } else
           if (Qt::Key_PageDown == e->key() ) {
                //// qDebug() <<  "giuuu page scroll ";
                e->accept();
                emit newdata();
                return;
          } else
            if (Qt::Key_Up == e->key() ) {
                scaleFaktor = scaleFaktor + 0.05;
                if (scaleFaktor < 0.22 || scaleFaktor > 10) {
                 scaleFaktor =9.9;
                }
                emit newdata();
                e->accept();
                return;
          } else
            if (Qt::Key_Down == e->key()) {
                scaleFaktor = scaleFaktor - 0.05;
                if (scaleFaktor < 0.22 || scaleFaktor > 10) {
                 scaleFaktor =0.23;
                }
                emit newdata();
                e->accept();
                return;
            }
         }
        if (Qt::Key_Home == e->key()) {
          qDebug() <<  "Qt::Key_Home";
        }
        e->accept();
        //// qDebug() <<  __FUNCTION__ << " ende - e->isAutoRepeat()" << e->isAutoRepeat();
}