chore: replace big_text with hardcoded logo

[joshka]

big_text.rs was a copy of the code from tui-big-text and was getting
gradually out of sync with the original crate. It was also rendering
something a bit different than the Ratatui logo. This commit replaces
the big_text.rs file with a much smaller string representation of the
Ratatui logo.

[orhun]

Q: Why not use tui-big-text instead of big_text.rs? Is it because we want to avoid a dependency?

[joshka]

Q: Why not use tui-big-text instead of big_text.rs? Is it because we want to avoid a dependency?

tui-big-text depends on ratatui from crates.io. Afaik, it's not possible to compile a version that works with the version compiled from source when compiling examples as the widget traits don't match even though they are the same.

P.s. This is not quite ready to merge. The GIF file size needs to under 10MB to make it possible for it to show in the readme. Intuitive things that would seem to make things smaller often don't (e.g. reducing the total time increases the file size), so it's a fun optimization problem of getting the timing of the destroy function timing and vhs script timing right.

[kdheepak]

I think number of pixels that change in a gif affects the size. Maybe decrease the randomness a tad? Alternatively, you can record a .mov and that will render on github.

[joshka]

I think number of pixels that change in a gif affects the size. Maybe decrease the randomness a tad? Alternatively, you can record a .mov and that will render on github.

Yep, this is one of the parameters I've been tweaking and which also has non-linear behavior
The problem is not how to make this work, it's finding the motivation to sit and repeatedly tweak things until they're just right with each iteration taking ~60s to edit, run, evaluate. "Just right" in this context is a GIF that is

• 15-30s
• <10MB
• animation is subjectively not too fast (to not be too jarring)
• has to end with the text fully visible
• should not start immediately

I don't like MOVs in this context as they tend to break (with a can't render error) on github often for some reason. That said, this might be a valid fall back position.

I'd suggest running VHS locally vhs examples/vhs/demo2-destroy.tape and checking whether the output looks good enough (I changed the Ratatui text color to white from Red).

Note the other thing I noticed is that there's a bit of extra space on the top and bottom of the frame. Not sure exactly what caused that however. Could be anything from OS update, font installation, ttyd change, vhs change, ?