Is it possible to write flutter plugins in rust?

[nrbnlulu]

Might be out of scope...

I mean not something like what frb does which is dart <-> rust
I want to be able to link against the native flutter library in rust and do stuff there (and then use frb)

[fzyzcjy]

Hi, do you mean https://cjycode.com/flutter_rust_bridge/quickstart "Flutter package" this one?

[fzyzcjy]

Hi, if you provide a minimal sample, I am happy to have a check. Generally speaking, as mentioned above, frb can be viewed as "generate some glue code that otherwise you write down by hand" and there is no magic, so I guess it should work somehow.

[nrbnlulu]

https://github.com/nrbnlulu/my_app not sure about how I did the actual rendering tho it doesn't even reach there so...
Note that irondash requires that the creation of a texture would happen in the platform's main thread.

[fzyzcjy]

Hmm, the process may be, (1) make it run a very simple demo (2) now you may be writing manual code that calls between Rust and Dart (e.g. via unsafe C ABI with a lot of boilerplate) (3) then now it is time to consider how to add flutter_rust_bridge to make that unsafe and long boilerplate be automatically done. So if the rendering is not done yet, then I guess flutter_rust_bridge cannot do much at this stage yet. But feel free to ping me when reaching the next stage!

[nrbnlulu]

Ah I finally managed to display something

As you can see I am really a professional png renderer 😄

Turns out you should create textures on the main platform thread (as mentioned)
and iron dash provides just that (run_in_main_thread(|| {}) thing).
So to sum up, if you need to create textures in rust (via frb) it is generally possible, (currently via Irondash).

Though I don't feel comfortable relaying on irondash (due to its no docs / unknown maintanance status), maybe in the future I'll give a try with cxx crate.
code here https://github.com/nrbnlulu/my_app

[nrbnlulu]

@fzyzcjy if you want I can submit a PR with an example for this

[fzyzcjy]

Looks great! Feel free to add a doc page e.g. in the folder of https://cjycode.com/flutter_rust_bridge/guides/how-to discussing this