kas VS vizia

Qt classic/widgets? I'm developing Kas to offer vaguely similar features (e.g. data models, theme abstraction, custom widgets with complex event handling), though said event handling and data models are quite different. It's still got a long way to go (so API is not stable), but in case you are interested, I should be dropping a new release tomorrow.

KAS GUI

kas-wgpu looks hopeful, but there's very little information about it and I'm not even sure it works on Android.

Changelog

The next release will support dynamic linking which approx. halves the recompile time in my quick tests. This is based on Bevy which also recommends using LLD (see here); I didn't have much success with this yet however.

If you want a "native-like" toolkit like Qt but Rust-native, then Druid, KAS and Iced are the most advanced in my opinion (though all are incomplete).

Yes. It was actually a mistake (using a nightly compiler and not realising the lock-in). But in this case (with KAS still in "earlyish development" and the workaround being less concise), I decided to leave it.

This is a little library I've been using recently (original version here).

Hello, I am github.com/dhardy, maintainer of rand, former dev of OpenMalaria epidemiology simulator, author of KAS GUI and Rust enthusiast since 2013. I may be interested in positions within Europe.

All of these projects have in common that they use Taffy (the project that I work on!) for box-level layout (which currently gives them block, flexbox, and grid layout) , and are either using or planning to use cosmic-text for text/inline layout. This gives you a decent first approximation of web layout, but it's not perfect and there are major features like float, display: inline-block, position: static, box-sizing: content-box missing. Not to mention that none of these implementations currently resolve CSS selectors, so you are effectively limited to inline styles (if you're interested in something in that direction then you may be interested in https://github.com/vizia/vizia).

Vizia is basically fine-grained reactivity with an Elmish twist, though I haven't used it, so I couldn't say how well it works.

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)

I don't think it's actually merged into Iced yet. It is merged into https://github.com/vizia/vizia though.

Vizia

I have recently learned about https://github.com/vizia/vizia and it looks very promising to me