Add user option to scale the text down

[nomeata]

Hi, and thanks. This needs also documentation in the manpage: https://github.com/nomeata/screen-message/blob/master/sm.6

I usually do scaling by adding spaces before and after, which works intuitive, you can do it even after you have started it and does not need extra options (I like to avoid becoming sm a beast with an endless list options). Do you think this option is really needed?

[nomeata]

Also, the option parser might want to complain if the argument is not a valid floating point number; and I am not sure if allowing 0.0 is useful.

[fleutot]

Fine, I understand your point of view!

[nomeata]

Well, my point of view is not unchangeable :-). Maybe we’ll see if more users request this feature.

[SolidTux]

I think a scaling feature would be useful, but not really as a command line option. Maybe some shortcut like ctrl + and ctrl -?

[fleutot]

@SolidTux I was planning to use sm on a remote machine, so I couldn't use a shortcut solution.

[fleutot]

@nomeata 0.0 is not useful, but I did not want to set an arbitrary limit (decide for the user when a scaling factor is too small). If someone tries to use 0.0 and gets no text, it's on them.

[SolidTux]

Why don't you check for <= 0 instead of < 0?

[nomeata]

For --invert we also have a key command. So I agree: If this is implemented, then maybe we want both flags and keys. But if we want keys, we also need a key combination to reset it to zoom-to-fit. Which key combo is appropriate there?

[SolidTux]

What about ctrl+0? That works in Firefox and Chrome so it would be at least somehow familiar.

[nomeata]

Sounds good, it’s what I would expect as well.

[fleutot]

Reset to scaling 1.0, or to scaling argument on command line? I agree on <= 0.

[nomeata]

Reset to scaling 1.0, or to scaling argument on command line?

That’s a corner case… to command line, I’d say.