Set minimum sizes for missions menu window

[Kilvoctu]

Summary

SUMMARY: Interface "Set minimum sizes for missions menu UI"

Purpose of change

Set a minimum width and height for the missions window so information does not become unreadable at small terminal sizes
Fixes #78806
Fixes #74766

Describe the solution

Set the window to not go below the minimum terminal sizes of 80 by 24. Otherwise, it'll retain its current behavior.
Update the affected code as per @moxian's comment in linked issue.

Describe alternatives you've considered

Set a static size for the missions window

Testing

Game compiles and loads
Open missions window at maximum terminal size, minimum terminal size, 640x480 pixels size, and a bunch of random sizes
Test again on notiles

Additional context

Max terminal size

Min terminal size

A random size

[mqrause]

I'm not sure, but I don't think we enforce an actual minimum size in pixels? So with this it might be possible to have the ui be larger than the game window if you use smaller than default font sizes. It might be better to calculate minimum size from minimum terminal size. But that might just be irrelevant fringe cases we can ignore as well.

[moxian]

Please check that it works in curses build as well (the Notiles in visual studio).
It definitely should, but I'm very slightly fearful.

[Kilvoctu]

I'm not sure, but I don't think we enforce an actual minimum size in pixels? So with this it might be possible to have the ui be larger than the game window if you use smaller than default font sizes. It might be better to calculate minimum size from minimum terminal size. But that might just be irrelevant fringe cases we can ignore as well.

Yeah... a cursory search through codebase, I didn't see anything like that lol. I wanted to keep it simple, but i'll fiddle around with it to try get something more proper and standardized. Would like for it to be all good, as there are other places with similar issues I'd like to address.

[moxian]

Thank you!

[Brambor]

• This fixes Mission window is needlesly small when screen is small  #74766.

[RenechCDDA]

This should use EVEN_MINIMUM_TERM_WIDTH from game_constants.h.

The height should use EVEN_MINIMUM_TERM_HEIGHT.

We already have these defined as constants, so no additional work is needed besides using the existing constexpr.

[Kilvoctu]

Implemented and tested.

Sorry for wasting everyone's time on something that's supposed to be simple..
I've looked at most of the UI code during developing my fork, and the execution of each window is so different, I don't know what's considered standard.

[RenechCDDA]

You're not wasting anybody's time.