accesskit VS elm-architecture-tutorial

If you were to implement this yourself, i'd look into either swash or cosmic-text for the text rendering stack (this is one of the things you really don't want to write from the ground up). For accessibility, AccessKit has quickly become the standard for communicating with crossplatform accessibility APIs in rust GUI. lightningcss (or its lower level counterpart cssparser) are both decent options for CSS parsing. Taffy handles some of what browsers offer for a layout engine, but is still being worked on.

> Fleet relies on the Java AWT/Swing framework to get a window from an operating system, but it doesn’t use the Java platform for managing its GUI components besides one JFrame and JPanel on top of it.

This is a terrible decision that is going to bite them in the long run. Doing things this way makes it far, far more difficult to implement accessibility, and regulations on this are only going to get stricter.

Implementing accessibility for a framework like that would involve three separate implementations for three separate platforms and the need to interface with D-Bus, COM and Objective C, from Java. I imagine that the latter two would be particularly difficult, considering how bad Java's FFI support is. It's not just calling methods either, you'd actually need to implement your own classes that conform to the relevant COM interfaces / Objective C protocols. There are libraries that can help with this[1], but I don't think they would work particularly well for something as complex as a code editor.

[1] https://github.com/AccessKit/accesskit

fltk-accesskit is an accesskit integration crate for fltk-rs, the gui crate. It's implemented as an external crate to allow for more experimentation before stabilizing the api, especially since fltk is at version 1.4.

Libraries for a lot of this stuff exist (albeit in many cases not very mature yet):

- https://github.com/pop-os/cosmic-text does text layout (which Taffy explicitly considers out of scope)

- https://github.com/AccessKit/accesskit does accessibility

- https://github.com/servo/rust-cssparser does value-agnostic CSS parsing (it will parse the general syntax but leaves value parsing up to the user, meaning you can easily add support for whatever properties you what). Libraries like https://github.com/parcel-bundler/lightningcss implement parsing for the standard css properties.

- There are crates like https://github.com/BurntSushi/bstr and https://docs.rs/wtf8/latest/wtf8/ for working with non-unicode text

We are planning to add a C API to Taffy, but tbh I feel like C is not very good for this kind of modularised approach. You really want to be able to expose complex APIs with enforced type safety and this isn't possible with C.

There are a number of up-and-coming Rust-based frameworks in this niche:

- https://github.com/iced-rs/iced (probably the most usable today)

- https://github.com/vizia/vizia

- https://github.com/marc2332/freya

- https://github.com/linebender/xilem (currently very incomplete but exciting because it's from a team with a strong track record)

What is also exciting to me is that the Rust GUI ecosystem is in many cases building itself up with modular libraries. So while we have umpteen competing frameworks they are to a large degree all building and collaborating on the same foundations. For example, we have:

- https://github.com/rust-windowing/winit (cross-platform window creation)

- https://github.com/gfx-rs/wgpu (abstraction on top of vulkan/metal/dx12)

- https://github.com/linebender/vello (a canvas like imperative drawing API on top of wgpu)

- https://github.com/DioxusLabs/taffy (UI layout algorithms)

- https://github.com/pop-os/cosmic-text (text rendering and editing)

- https://github.com/AccessKit/accesskit (cross-platform accessibility APIs)

In many cases there a see https://blessed.rs/crates#section-graphics-subsection-gui for a more complete list of frameworks and foundational libraries)

Using HarfBuzz makes sense. But if you're looking for a pure-Rust alternative, I hear cosmic-text (made by Pop!_OS) is good. There's also AccessKit for accessibility.

There are efforts to support a cross platform accessibility library:

https://github.com/AccessKit/accesskit

egui is an easy-to-use immediate mode GUI for Rust, and I just released 0.20. It's a big release!

There is now support for AccessKit (https://github.com/AccessKit/accesskit) which brings accessibility to egui (a first for an immediate mode GUI?).

There is also better table support, nicer keyboard shortcut handling, better looking text in light mode (still not great, but better).

See more in the changelog: https://github.com/emilk/egui/blob/master/CHANGELOG.md

Try it out at www.egui.rs

I'm learning Haskell right now, pure functional language, but if anyone is interested, Elm is based on Haskell and much easier to learn. Elm is a web development language that compiles to JS. https://guide.elm-lang.org/

Elm is a different approach that compiles into JavaScript. In the extreme case, you have Emscripten which will compile many language into JavaScript but will feel really clumsy compared to using JavaScript in a lot of cases.

And if you want to stay in the UI realm, Elm is a good introduction into functional programming.

If you want to get better at data structures you should strongly consider learning a functional language. A huge part of functional programming is manipulating data structures. The language Elm is a great place to start for you since it's frontend specific. For example, check out the doc page for the Dict data type and see if that kind of stuff is what you're looking for.

https://guide.elm-lang.org/ for a high level guide, and an unstyled button example https://elm-lang.org/examples/buttons.

I hope this tiny guide was helpful, and that you learned something new today. If you want to learn more about Elm, you should check out the official guide or say hello in the Elm Slack #beginners channel

https://guide.elm-lang.org/ is always a solid example for me

After going through the whole Introductory Guide to the Elm Language and reading the Elm in Action book, I already felt quite comfortable developing webapps in this paradigm. I liked Elm so much that I started a project to teach programming to beginners using this language and made the first classes available on the website elm.dev.br (in Brazilian Portuguese).