Nuklear markup or language?

[epoberezkin]

Did somebody make it yet?

What I want to exist is a simple Nuklear language that allows to define:

• UI layout rendered by this library.
• event handlers for state transitions UI elements and external events.

This could be a nice cool little reactive framework for widgets, that would include an interpreter for some super-simple language (to define UI layout as a function of state, and to modify state in response to events).

If somebody's interested to make it, and it's something we could use in SimpleX Chat, we'd sponsor it.

Our constraint is that compressed widget definition together with handlers should be less than 14-15kb in complex cases, and much smaller in simple cases.

[epoberezkin]

And it's obviously in C, no fancy stuff.

[epoberezkin]

Maybe PicoLisp? https://github.com/picolisp/pil21

[HappyGlitch]

Nuklear is an Immediate Mode GUI toolkit, which means it's designed to handle interaction near the same code responsible for rendering. Having UI layout in a separate language from the event handlers would violate that paradigm. Nuklear could be extended in this way, but because of that I think it would be better for you to use some Retained Mode GUI library instead.

[gerdolf]

OK, I'll give it a try for PicoLisp

[epoberezkin]

@HappyGlitch thank you

Retained Mode GUI

Such as?

[epoberezkin]

@HappyGlitch I think it's more likely I am bad at explaining what I want than Nuklear is the wrong library - we do want "immediate mode" UI rendering.

The underlying problem is here: https://github.com/simplex-chat/simplex-chat/pull/6169/files

[sleeptightAnsiC]

Retained Mode GUI

Such as?

Similar in scope to NK would be: https://github.com/nicbarker/clay

[Wc4ever]

Clay is immediate mode also, you need something like NoesisGUI they use xml to describe widgets. There is a few more similar products but all of them protrietary. FOSS seems to lean towards imgui.