[3.13] gh-131507: Refactor screen and cursor position calculations (GH-131547) (GH-131557)

gh-131507: Refactor screen and cursor position calculations (GH-131547)

This is based off GH-131509.
(cherry picked from commit 4cc82ffa377db5073fdc6f85c6f35f9c47397796)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>