[Freeciv-Dev] Re: (PR#8632) Easy way to set map size with auto ratios (seteables if desired)

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=8632 >

Marcelo Burda wrote:

> if you not like ratio for user i propose for this last alternative.
> when users choice to set xsize/ysize instead size to
> calculate internally size and ratio from  the hsize, vsize (the apparent
> sizes ) and then calculate the xsize, ysize (natural size).

We have three options, as I see it:

- Just "size".  This is quite easy.  The ratio is determined 
automatically.  This is the minimalist way to go, and probably quite 
adequate.

- Size and ratio.  This requires a bit of ugliness since the ratio is a 
number like 95 meaning 9:5.

- Size and xsize,ysize.  This requires even more ugliness since the 
xsize,ysize must be updated when the size is changed, and vice versa. 
So we need to add callback functions for these values.  Also there's a 
problem with resolution.  size=4 is true with 80x50 and also with 84x52, 
but these are not the same.  So maybe size will need a greater 
resolution, otherwise you might get odd behavior if you did:

   /set xsize 84
   /set ysize 52
   /show size
   [4]
   /set size 4
   [this changes xsize and ysize even though there is no change]

jason