aetna-core

Backend-agnostic UI primitives for Aetna apps.

Start here for application code:

use aetna_core::prelude::*;

struct Counter {
    value: i32,
}

impl App for Counter {
    fn build(&self) -> El {
        column([
            h1(format!("{}", self.value)),
            row([
                button("-").key("dec"),
                button("+").key("inc").primary(),
            ])
            .gap(tokens::SPACE_SM),
        ])
        .gap(tokens::SPACE_MD)
        .padding(tokens::SPACE_LG)
    }

    fn on_event(&mut self, event: UiEvent) {
        if event.is_click_or_activate("inc") {
            self.value += 1;
        } else if event.is_click_or_activate("dec") {
            self.value -= 1;
        }
    }
}

Use aetna-winit-wgpu to open a native desktop window. Use aetna-wgpu::Runner directly only when writing a custom host or embedding Aetna in an existing render loop.

If the UI mirrors external state, refresh it in App::before_build. Hosts call that hook immediately before each build.

The app-author surface is aetna_core::prelude. Backend and diagnostic APIs live in explicit modules such as ir, paint, runtime, bundle, text, and vector.