The web build has no system-font access, so CAD text in non-Latin scripts
(Cyrillic, Greek, CJK, …) rendered as nothing — build_fallback was a hard
None on wasm (#141). Instead, ship per-script Noto subsets under web/fonts
(one alphabet per file, SIL OFL 1.1) and fetch them lazily over HTTP the
first time a drawing uses that script, then outline glyphs with ttf-parser.
- web_font: Script enum + script_of (char → script font), a per-script
store with lazy fetch, and a pending queue drained by the app loop.
- CJK is split by language (chinese/japanese/korean). Han ideographs share
code points but differ by language, so the shared block is routed by the
document's $DWGCODEPAGE (932→JP, 949→KR, GB/936→CN); kana is always
Japanese, Hangul always Korean. Re-tessellates when the language changes.
- build_fallback (wasm) outlines from the fetched subset; clear_fallback_cache
lets glyphs that missed while a font was in flight reappear on load.
- PollWebFonts subscription (web only) + WebFontLoaded message drive fetches.
- Trunk copy-dir serves web/fonts; nothing is bundled into the native binary
(desktop keeps using system fonts).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Show a centered spinner + title until the app's canvas mounts, then fade
it out — the wasm bundle takes a moment to download and start.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
With the wasm bundle building, get it rendering in a browser:
- Enable iced `webgl` so wgpu uses WebGL2 where WebGPU is absent
(e.g. Firefox by default), and `fira-sans` so UI text has an
embedded font (the web has no system fonts) — without it every
label was blank.
- Replace `std::time::Instant` with `iced::time::Instant` (web-safe);
`Instant::now()` panics ("time not implemented") on wasm and crashed
at boot via the command line.
- Skip the batched-hatch pipeline on wasm: its bind group needs
vertex-stage storage buffers, which WebGL2 lacks (validation error
on "New drawing"). Fields become Option; upload/draw guard on them.
Hatches don't draw on the web for now; everything else does.
- Fix the trunk feature flag (`data-cargo-no-default-features`) and
ignore the `dist/` build output.
Native build + 75 tests unchanged.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The binary now compiles for wasm32 as a runnable web target:
- Split the main-window render into `view_main`, bypassing the
multi-window id dispatch the browser cannot use.
- Add `run_web` / `boot_web`: a single-window `iced::application`
entry for wasm (the browser canvas is the only window). Native
keeps the multi-window `iced::daemon` via cfg-split in `main`.
- Add a `console_error_panic_hook` (wasm-only) for readable panics.
- Add `index.html` + `Trunk.toml` so `trunk serve` builds the wasm
bundle (no-default-features → no solid3d) with COOP/COEP headers.
Native build and all 75 tests unchanged. Browser runtime (rayon
threads, canvas attach, real file I/O) is the next iteration.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
