Need to set the time line execution curve as linear.
1 2 3 4 5 | m_time_line.reset(new QTimeLine(m_span_msecs * count, this)); m_time_line->setFrameRange(0, count); m_time_line->setEasingCurve(QEasingCurve::Linear); // below is deprecated //m_time_line->setCurveShape(QTimeLine::LinearCurve); |