boxer

Build artifacts of boxer, addressed by content, and a demo of its apps running in a browser tab.

Demo

boxer apps compiled to WebAssembly and running in this tab, beside the Rust browser host (ADR-0263). The first visit downloads about 27 MB; the page loads nothing from any other site. Each app also opens in fresh, the light theme of ADR-0258; the theme is chosen when an app starts, so switching opens the app afresh.

Wind forecast in play A real GFS 10 m wind forecast, 17 steps over two days, read with SQL in play and drawn as particles. The SQL is answered in this tab by Go, with no database: SELECT * FROM keelson('gfs_wind') (ADR-0290 to ADR-0292). Data: NOAA GFS, a work of the US Government. light theme
Repository complexity map This repository's code, one cell per directory: area is lines of code, colour is cyclomatic complexity per 100 lines, counted by scc at the published commit when the demo was built. The rows are literals in one SELECT … FROM values(…), an applet document served beside this page and answered in this tab with no database (ADR-0299). light theme
Widget gallery The widget demos with their source. The map demos are left out, since they load tiles from a third-party server, and so are a few that do not run in a tab. light theme
IDS token catalogue The design-system tokens: neutral spine, semantic palette, type scale, colormaps. light theme
leeway widgets The leeway widgets over built-in fixtures. light theme
fibscope Fibonacci-tagged identifiers. light theme
splashscreen Build, version and licence notices. light theme

How a tab runs an app

Main thread

Viewer page

Paints each frame's mesh with WebGL. Encodes pointer and keyboard events as the carrier's protobuf.

◀──▲ mesh, the ADR-0128 wire input events ──▶▼ postMessage

Web Worker

Go module imzero2tab.wasm

A wasip1 reactor holding the apps. The worker calls its frame export per tick, at a reactive cadence. Each frame becomes FFFI2 bytes on fd 1.

▼ frame bytes · ▲ fetch replies
fd 0/1 shim, synchronous, in bridge.mjs

Rust browser host imzero2_browser.wasm

A C-ABI module: the FFFI2 interpreter, egui layout and tessellation into the mesh wire. Fonts arrive as bytes.

One static origin

The page, worker.mjs, bridge.mjs, the two modules and the fonts. Nothing runs on the server.

Both modules share one worker thread, so they can alternate synchronously without blocking the page; the page keeps only painting and input (ADR-0263).

Browser hosts by digest

tabhost/<sha256>.wasm is the Rust browser host a tab runs (ADR-0278). A module consuming boxer bundles its own apps and fetches the host its boxer pin records in browserhost.sum, without a Rust toolchain. tabhost/index.txt lists the published digests; nothing published is removed.