kayak_ui VS belly

I cannot recommend immediate mode GUI programming based on the limitations I've experienced working with egui.

egui does not support putting two widgets in the center of the screen: https://github.com/emilk/egui/issues/3211

It's really easy to get started with immediate mode, it's really easy to bust out some UI, but the second you start trying to involve dynamically resized context and responsive layouts -- abandon all hope. The fact it has to calculate everything in a single pass makes these things hard/impossible.

... that said, I'm still using it for https://ant.care/ (https://github.com/MeoMix/symbiants) because it's the best thing I've found. I'm crossing my fingers that Bevy's UI story (or Kayak https://github.com/StarArawn/kayak_ui) become significantly more fleshed out sooner rather than later. Bevy 0.13 should have lots more in this area though (https://github.com/bevyengine/bevy/discussions/9538)

Bevy with https://github.com/StarArawn/kayak_ui

These two both provide ways of expressing UI in a more HTMLish style.Kayak UI (0.9 support)Belly (0.10 support)

I agree that the state of GUI in Rust is not quite mature.

As an aside, there's https://github.com/StarArawn/kayak_ui that seems nice, but I've not actually used it, so I can't vouch for it.

Hello! I would like to hear some suggestion and opinions from Rust community about building Wayland ecosystem in Rust based around Smithay and their Client Toolkit. I'm working with Wayland Compositors for over 2 years now (private projects) and wanted to move ahead from C++ to build modern Desktop Ecosystem and it's components (truly unique, not copies of macOS or Windows styles) like notification daemon, customizable desktop shell or powerful wallpaper daemon for any compositor which implements layershell protocol. Current idea is to create wallpaper daemon which uses WGPU to render shaders, images or gifs with comfort of high perofrmance renderer (still learning wgpu and it's slow process). For UI components I would like to use truly amazing KayakUI create which uses JSX-style syntax for designing widgets. Desktop Shell should provide plugins (most likely applied through WASM) for integrating various creates to get e.g. weather info or compositor integration etc.

Others have already mentioned inlyne and blitz, however given that you're interested in combining web UI with game/wgpu rendering you may be more interested in bevy_ui (and the higher level APIs like bevy_ui_dsl and belly that sit on top of this). Bevy UI is working on a HTML model and is specifically designed to integrate with Bevy's main game renderer and other infrastructure. It's worth noting that a 0.11 release of Bevy of due in next few days, and that UI is going to be a strong focus of the 0.12 release cycle: which should lead to significant development of bevy_ui, and either a doubling down on the "HTML-like UI" approach or a pivot to a new approach.

These two both provide ways of expressing UI in a more HTMLish style.Kayak UI (0.9 support)Belly (0.10 support)