Thank you very much Monika, this solution is much better than the previous one. It is still not perfect, because if you scroll quickly some columns are not evaluated as "last" and their autofit does not occur. However, I think it can be useful for me.
Thanks for your help!

Hi Monika.
I have tried your solution in my project and it is effective but I have a table with many columns and some of them with very long texts, so, until columnsNotInView is not emptied the scroll is extremely slow.

Maybe there is a way to resize all columns at load data time instead of the onScroll event. This strategy would avoid the delay when scrolling.

Thank you very much for your attention.