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Krzysztof kuhy Rudnicki 0fc3788d7a Some checks are pending Pre-commit checks / pre-commit (push) Waiting to run Details Python tests / test (push) Waiting to run Details Shell tests / shell-tests (push) Waiting to run Details Shell tests / arch-tests (push) Waiting to run Details app_icons: home_inventory has a Linux desktop target Its desktop app is a Chrome wrapper around the Flutter web build, and it ships a .desktop entry plus a hicolor icon theme -- so it genuinely has a Linux target. With linux=False, `generate --linux-out` skipped it silently and reported success, which meant desktop/icons/ in that repo could not be regenerated at all. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>		2026-07-27 11:26:26 +02:00
..
tests	app_icons: auto-sync pubspec.yaml's adaptive_icon_background	2026-07-21 21:38:22 +02:00
__init__.py	Add shared launcher-icon generator for the Flutter apps	2026-07-19 16:55:48 +02:00
__main__.py	Add shared launcher-icon generator for the Flutter apps	2026-07-19 16:55:48 +02:00
apps.py	app_icons: home_inventory has a Linux desktop target	2026-07-27 11:26:26 +02:00
cli.py	Add shared launcher-icon generator for the Flutter apps	2026-07-19 16:55:48 +02:00
generate.py	app_icons: auto-sync pubspec.yaml's adaptive_icon_background	2026-07-21 21:38:22 +02:00
glyphs.py	app_icons: add home_inventory storage-box glyph; whitelist it on the phone	2026-07-27 07:35:55 +02:00
preview.py	Add shared launcher-icon generator for the Flutter apps	2026-07-19 16:55:48 +02:00
README.md	app_icons: warm-tint the shared icon family palette	2026-07-21 21:20:41 +02:00
render.py	Add shared launcher-icon generator for the Flutter apps	2026-07-19 16:55:48 +02:00
style.py	app_icons: warm-tint the shared icon family palette	2026-07-21 21:20:41 +02:00

README.md

app_icons — shared launcher icons for the Flutter apps

One icon family across every Flutter/Dart app: a charcoal #211D1B field with a single glyph in the shared unified-design-system accent (#B8862E), drawn at one stroke weight and optically centred so a row of them lines up.

Commands

# what is registered
PYTHONPATH=~/testsAndMisc python3 -m python_pkg.app_icons list

# contact sheet for visual review: full size / circle-masked / 48dp
PYTHONPATH=~/testsAndMisc python3 -m python_pkg.app_icons preview -o /tmp/sheet.png

# write assets into every app repo and rebuild the Android mipmaps
PYTHONPATH=~/testsAndMisc python3 -m python_pkg.app_icons generate --android

# one app, plus the hicolor PNGs for a Linux desktop target
PYTHONPATH=~/testsAndMisc python3 -m python_pkg.app_icons \
    generate --app todo --android --linux-out ~/todo/linux/icons

What gets written

Per app, into <repo>/assets/icon/:

Layer	Purpose
`icon`	Charcoal field + glyph. Legacy square launcher icon and Linux icon.
`icon_foreground`	Glyph only, transparent. Adaptive-icon foreground layer.
`icon_monochrome`	Glyph only, white. Android 13+ themed icons.

Both an .svg source and a 1024px .png are written for each, so a build never needs rsvg-convert. flutter_launcher_icons then turns the PNGs into the density buckets and mipmap-anydpi-v26/ic_launcher.xml.

Design constraints that bite

Negative space ≥ half the stroke weight. Strokes closer than that merge into a solid blob at launcher size. A fork whose tines sat exactly one stroke width apart rendered as a tulip.
Ink must stay inside the 560px safe box. Android masks adaptive icons to roughly the inner 66% of the canvas. generate warns when a glyph overflows.
Stroked outlines can read wrong. A stroked three-tine fork reads as a trident; a filled fork-and-knife pair reads as cutlery. Prefer a filled silhouette when the outline is ambiguous.
Glyph positioning inside the fragment is irrelevant — render.centre_offset measures the rendered ink and recentres it. Only the extents matter.

Adding an app

See the app-icon skill (~/.claude/skills/app-icon/SKILL.md) for the full procedure. In short: add a glyph to glyphs.py, register the app in apps.py, wire flutter_launcher_icons into its pubspec.yaml, generate, review the contact sheet, then verify on the phone.

Tests

cd ~/testsAndMisc
python3 -m pytest python_pkg/app_icons --cov=python_pkg.app_icons \
    --cov-report=term-missing

External tools (rsvg-convert, magick, dart) are mocked; the suite needs none of them installed.