composePPT VS rui

Jetpack Compose (Google's alternative on Android, that also works pretty much anywhere you can run a JVM and others like the web [1], terminals[2], powerpoints[3], as well as pretty much anywhere you have an imperative API that you want to transform into a functional model[4]) is infinitely more polished and has better tools than anything Apple has put out in all of SwiftUI's existence. Apple is bringing this upon themselves with their "major updates" concept for SwiftUI coming every other year, where components aren't even available on old versions of iOS. A UI toolkit is a library like any other, version it like a library and match patch releases.

[1] https://compose-web.ui.pages.jetbrains.team/

[2] https://github.com/JakeWharton/mosaic

[3] https://github.com/fgiris/composePPT

[4] https://github.com/googlemaps/android-maps-compose

Today in "HN never used a reactive framework that is not React and is offended when UI is not written with Dear ImGui".

This is literally the exact style of SwiftUI and Jetpack Compose (down to the author having used the term fragment, I sure hope this isn't leftover trauma from being an Android developer), except written in Rust (hence having to deal with lifetimes in the middle, default parameters, lambdas being quite verbose and needing to move things, etc).

Not blocking the UI thread is mandatory if you ever want to make any kind of complex UI. If you're a web dev, well you only have one thread anyways, good luck, if you're on any other platform, interactions _cannot_ ever block the UI (unless you, yourself, update the UI to say it is blocked). Making this async is a good thing.

Stack traces are a problem, but then again they've been a problem in any remotely capable UI toolkit.

With ReactiveCell, it looks surprisingly similar to what Compose does, where modifying a State causes recomposition of everything observing it. Which means that it might be powerful enough one day to do the same things as Molecule (https://github.com/cashapp/molecule), or ComposePPT (https://github.com/fgiris/composePPT), where everything is a potential target and it interops really well with existing toolkits.

Inspired by Xilem, Leptos and rui, Floem aims to be a high performance declarative UI library with minimal effort from the user.

My rui library can render UIs at 120fps, uses similar SDF techniques (though uses a single shader for all rendering): https://github.com/audulus/rui

Is their GPUI library open source?

I think the jury is still out on whether rust is good or bad for UI. Once rust UI libraries are more mature we'll get a sense of it. There are some advantages of static typing, even for UI (see SwiftUI for example). I'll grant the pickiness of rust can be a challenge. Anyway give us some time to work on stuff.

Here's my effort: https://github.com/audulus/rui

rui

Depending on the scale of your project, I could suggest rui library which is cross platform though it's not related to gtk, https://github.com/audulus/rui, It's inspired by swiftUI

I've done a library for vector graphics on the GPU which works pretty well for my uses:

https://github.com/audulus/vger

and a rust version:

https://github.com/audulus/vger-rs

(which powers my rust GUI library: https://github.com/audulus/rui)

Here's the approach for rendering path fills. From the readme:

> The bezier path fill case is somewhat original. To avoid having to solve quadratic equations (which has numerical issues), the fragment function uses a sort-of reverse Loop-Blinn. To determine if a point is inside or outside, vger tests against the lines formed between the endpoints of each bezier curve, flipping inside/outside for each intersection with a +x ray from the point. Then vger tests the point against the area between the bezier segment and the line, flipping inside/outside again if inside. This avoids the pre-computation of Loop-Blinn, and the AA issues of Kokojima.

It works pretty well, and doesn't require as much preprocessing as the code in the article. Also doesn't require any GPU compute (though I do use GPU compute for some things). I think ultimately the approach in the article (essentially Piet-metal, aka tessellating and binning into tiles) will deliver better performance, and support more primitives, but at greater implementation complexity. I've tried the Piet-metal approach myself and it's tricky! I like the simpler Shadertoy/SDF inspired approach :)

You should look into rui, https://github.com/audulus/rui It is an amazing ui Library for rust

Try rui https://github.com/audulus/rui, It's a Swift Type ui