[Feature Request] Synchronized Updates

[valoq]

In some cases, applications using tcell show an annoying flicker when the window size changes and a redraw is triggered.

For example, running lf in alacritty shows this when shrinking its window in sway in vertical setups (but for some reason not in horizontal setups or when expanding)

According to the related bugreport for alacritty, the only solution is synchronized updates: alacritty/alacritty#8549 (comment)

Could this be a possible future feature for tcell?

[gdamore]

I think this could be done -- I need to explore more about the terminal sequences, but as tcell does a full screen redraw at once, we could easily bracket that by a pair of escape sequences. I'm a little cautious about doing this for just one terminal though, but if it is broadly supported then I will happily add it to tcell.

[valoq]

As I understand the issue, this is not related to specific terminals, though some terminal emulators have workarounds like wait times.
Synchronized Updates provides a broader solution to the issue and is supported by most terminals: https://gist.github.com/christianparpart/d8a62cc1ab659194337d73e399004036

If this can be implemented, it may address a number of issues and would be an awesome addition.