Method previousFrame

app/src/MDF4/Player.cpp:539–559

* @brief Steps back to the previous frame */

 * @brief Steps back to the previous frame
 */
void MDF4::Player::previousFrame()
{
  if (!isOpen())
    return;

  if (isPlaying())
    pause();

  if (m_framePos > 0) {
    --m_framePos;

    UI::Dashboard::instance().clearPlotData();

    int framesToLoad = UI::Dashboard::instance().points();
    int startFrame   = std::max(0, m_framePos - framesToLoad);
    int endFrame     = std::min(frameCount() - 1, m_framePos);

    processFrameBatch(startFrame, endFrame);
    updateData();
  }
}

//--------------------------------------------------------------------------------------------------
// Progress & seeking