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[feat](trx-frontend-http): render APRS symbols as glyphs #37

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sjg merged 3 commits from feat/aprs-symbol-glyphs into main 2026-08-03 20:12:50 +02:00
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sjgandClaude Opus 5 5b7dd493d4 [feat](trx-frontend-http): draw APRS symbols from the sprite sheets
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Resolve a table/code pair to a sprite cell in aprs-shared, and use it
from both the packet lists and the map markers, which had each been
printing the raw symbol character in a bordered box.

A table identifier of / or \ selects the primary or alternate sheet
directly.  Anything else is an overlay character, which the APRS spec
draws on top of the alternate symbol -- so those stack the overlay sheet
over the alternate one rather than picking a sheet.  Codes outside
0x21..0x7E have no cell and keep the old character box.

The sheet URLs stay in the stylesheet so a min-resolution query can swap
in the retina sheets; only the cell offset is computed and set inline.
Map markers share the helper through the plugin chunk, so the map stays
free of any remote symbol fetch.

Verified in a browser against the real stylesheet and sheets: /> is a
car, /_ a WX circle, /& an igate diamond, \n a red triangle, and the
overlays S> and 7# carry their character on the alternate symbol.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018huL1ELyr86yVqfAabtioA
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-08-03 19:55:50 +02:00
sjgandClaude Opus 5 02fe492dbf [feat](trx-frontend-http): serve the vendored APRS symbol sprites 
Embed the six sheets alongside the other vendored assets and serve them
under /vendor with the same immutable cache headers.

The browser computes a symbol's cell from a 16x6 grid of 24px cells, so
a re-vendored sheet at any other size would shift every station onto a
neighbouring icon -- wrong on every packet, and invisible unless you
know which glyph to expect.  Pin the geometry by parsing each embedded
PNG's IHDR in a test.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018huL1ELyr86yVqfAabtioA
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-08-03 19:55:50 +02:00
sjgandClaude Opus 5 1bc2c88e2f [chore](trx-rs): vendor the APRS symbol sprite sheets 
The web UI had no symbol graphics at all, so a position report rendered
its raw symbol character in a bordered box.  Vendor rev H of the
hessu/aprs-symbols set: three 24px sheets (primary, alternate, and the
overlay characters) plus their retina variants.

The set carries no single license.  Individual symbols are variously
vectorizations of the original WA8LMF bitmaps with unknown terms, new
CC BY-SA work by OH7LZB, public-domain or CC sources, and a handful of
brand logos owned by their companies.  Record that as
LicenseRef-APRS-Symbols with the upstream per-symbol catalogue copied
verbatim, and carry the attribution pointer upstream asks for.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018huL1ELyr86yVqfAabtioA
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-08-03 19:36:27 +02:00