Method insertColumn

3rdparty/qcustomplot/qcustomplot.cpp:4493–4509

! Inserts a new column with empty cells at the column index \a newIndex. Valid values for \a newIndex range from 0 (inserts a column at the left) to \a columnCount (appends a column at the right). \see insertRow */

  \see insertRow
*/
void QCPLayoutGrid::insertColumn(int newIndex)
{
  if (mElements.isEmpty() || mElements.first().isEmpty()) // if grid is completely empty, add first cell
  {
    expandTo(1, 1);
    return;
  }
  
  if (newIndex < 0)
    newIndex = 0;
  if (newIndex > columnCount())
    newIndex = columnCount();
  
  mColumnStretchFactors.insert(newIndex, 1);
  for (int row=0; row<rowCount(); ++row)
    mElements[row].insert(newIndex, nullptr);
}

/*!
  Converts the given \a row and \a column to the linear index used by some methods of \ref