ScrollZoomer vertical scroll direction

[saasen]

The vertical scroll direction in the Realtime example works opposite to what most users expect. The logic for inverted axis work however. I found if I changed ScrollBar::isInverted() to:

bool ScrollBar::isInverted() const
{
    if (orientation() == Qt::Vertical)
        return !d_inverted;
    else
        return d_inverted;
}

bool ScrollBar::isInverted() const
{
    if (orientation() == Qt::Vertical)
        return !d_inverted;
    else
        return d_inverted;
}

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it works as expected