Cairo::Image.cairo_image_surface_create_for_data() limits its use due to Blob parameter

[Xliff]

I've been trying to link Font::FreeType to Cairo for a few days and have run into a problem. It appears that use of the function in the subject is limited to Blob's. Unfortunately, I want to have cairo write direcly to a buffer that has already been allocated in C .

What would be the best way to link this to Cairo, via the above function, so that I don't have to have more than one buffer?

If this is not directly possible with the current implementation, can I attempt to correct the issue with a PR?

Thanks.

[timo]

I'd appreciate a PR that turns the function (and maybe any other function that currently takes Blob) into a multi with an additional candidate that accepts CArray. You could also investigate if it would work to just constrain it to, for example, Positional[int8] and if that makes it work immediately with my int8 \@foo, Buf[int8].new(1, 2, 3), Blob[int8].new(2, 3, 4), as well as a CArray

Thanks in Advance!

[dwarring]

@Xliff. No sure if it helps, but have you noticed the FreeType example in doc/examples, which shares the underlying native FreeType face object with Cario.