Method indexToRowCol

qcustomplot/qcustomplot.cpp:4532–4561

! Converts the linear index to row and column indices and writes the result to \a row and \a column. The way the cells are indexed depends on \ref setFillOrder. If it is \ref foRowsFirst, the indices increase left to right and then top to bottom. If it is \ref foColumnsFirst, the indices increase top to bottom and then left to right. If there are no cells (i.e. column or row count is

  \see rowColToIndex
*/
void QCPLayoutGrid::indexToRowCol(int index, int &row, int &column) const
{
  row = -1;
  column = -1;
  const int nCols = columnCount();
  const int nRows = rowCount();
  if (nCols == 0 || nRows == 0)
    return;
  if (index < 0 || index >= elementCount())
  {
    qDebug() << Q_FUNC_INFO << "index out of bounds:" << index;
    return;
  }
  
  switch (mFillOrder)
  {
    case foRowsFirst:
    {
      column = index / nRows;
      row = index % nRows;
      break;
    }
    case foColumnsFirst:
    {
      row = index / nCols;
      column = index % nCols;
      break;
    }
  }
}

/* inherits documentation from base class */
void QCPLayoutGrid::updateLayout()