C++ (Cpp) wheelPressed Examples

Example #1

File: qwt_wheel.cpp Project: NREL/OpenStudio

/*!
   \brief Mouse press event handler

   Start movement of the wheel.

   \param event Mouse event
*/
void QwtWheel::mousePressEvent( QMouseEvent *event )
{
    stopFlying();

    d_data->isScrolling = wheelRect().contains( event->pos() );

    if ( d_data->isScrolling )
    {
        d_data->time.start();
        d_data->speed = 0.0;
        d_data->mouseValue = valueAt( event->pos() );
        d_data->mouseOffset = d_data->mouseValue - d_data->value;
        d_data->pendingValueChanged = false;

        Q_EMIT wheelPressed();
    }
}

Example #2

File: SoQtThumbWheel.cpp Project: ruisebastiao/SoQt

void
SoQtThumbWheel::mousePressEvent(QMouseEvent * event)
{
  if (this->state != SoQtThumbWheel::Idle)
    return;

  if (event->button() != Qt::LeftButton)
    return;

  QRect wheelrect;
  if (this->orient == Vertical) {
    wheelrect.setLeft(SHADEBORDERWIDTH + 3);
    wheelrect.setTop(SHADEBORDERWIDTH + 6);
    wheelrect.setRight(this->width() - SHADEBORDERWIDTH - 3);
    wheelrect.setBottom(this->height() - SHADEBORDERWIDTH - 6);
  } else {
    wheelrect.setLeft(SHADEBORDERWIDTH + 6);
    wheelrect.setTop(SHADEBORDERWIDTH + 3);
    wheelrect.setRight(this->width() - SHADEBORDERWIDTH - 6);
    wheelrect.setBottom(this->height() - SHADEBORDERWIDTH - 3);
  }

  if (!wheelrect.contains(event->pos()))
    return;

  this->state = SoQtThumbWheel::Dragging;

  if (this->orient == SoQtThumbWheel::Vertical)
    this->mouseDownPos = event->pos().y() - SHADEBORDERWIDTH - 6;
  else
    this->mouseDownPos = event->pos().x() - SHADEBORDERWIDTH - 6;

  this->mouseLastPos = this->mouseDownPos;

  emit wheelPressed();
}