feat(native): add initial tray-support for macOS

[lessp]

This adds tray-support for macOS like so:

Native.Tray.make(~title=`Image("absolute/path/to/image.png"), ());

Native.Tray.make(~title=`Text("SomeTitle"), ());

Begins to address #322

[github-actions]

I have updated your lock dirs and formatted the code.
Please @lessp pull the last commit before pushing any more changes.

[lessp]

Not sure how we'd like to separate things going forward without naked pointers. I guess we could keep a similar structure but we'd need to import the ocaml-ffi-helpers in foo_cocoa.h as well?

Currently src/Native/tray_cocoa.c is unused and I dumped all of that into tray.c

cc @zbaylin

[cdaringe]

I can't wait to try this! Is it on pause indefinitely or just delayed?

[lessp]

I can't wait to try this! Is it on pause indefinitely or just delayed?

hey @cdaringe, currently (unfortunately) I have extremely limited free-time for OSS, so if anyone wants to take this further feel free. 🙂

[lessp]

Merged with master and moved the examples to a separate file, I believe what's left here is:

• Being able to remove an item from the tray
• Vaguely remember @zbaylin creating helpers for allocating stuff, might want to refactor to use those

[lessp]

Hey Zach, I believe this covers the first minimal surface area, albeit for macOS only:

The API surface is fairly large, so we should start by thinking of a minimal subset - perhaps addressing the following scenarios:

Create a tray icon
Destroy a tray icon

Very possible that I might have missed something!

[zbaylin]

Hey @lessp -- so happy to finally see this getting in! I had some minor comments (mostly just rebasing with new APIs like the revery_wrapPointer). I also wonder if it's possible to hook into the NSMenu stuff here too. Maybe that should be a separate PR, though.

[lessp]

Hey @lessp -- so happy to finally see this getting in! I had some minor comments (mostly just rebasing with new APIs like the revery_wrapPointer). I also wonder if it's possible to hook into the NSMenu stuff here too. Maybe that should be a separate PR, though.

Thanks for the review Zach, feels like I left quite a bit for you there! 😄

I also wonder if it's possible to hook into the NSMenu stuff here too. Maybe that should be a separate PR, though.

Yeah, that would have to be up for grabs, just thought I'd try to get this in!

[zbaylin]

Nit: is this still needed?

[lessp]

Hmm, actually, I don't know 🤔 Most likely I followed another example, but looking at the context, I was under the impression that it is, but this is your forte!

    if (vImagePath != Val_none) {
        const char *imagePath = String_val(Some_val(vImagePath));

        NSImage *nsImage = revery_makeImageFromAbsolutePath_cocoa(imagePath);

        statusItem.button.image = nsImage;

        UNUSED(imagePath);
    }

[zbaylin]

Thanks @lessp! I'm going to push up some changes to the unwrap/wrap semantics, but other than that it looks great!