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amethyst/tools/material-symbols-subset/subset.sh
T
Claude 41ef1d89b3 feat(ui): add the OpenTimestamps logo as a custom glyph and use it in the OTS pill
Bake the official OpenTimestamps stamp logo (traced from
opentimestamps/logo vector.svg; monochrome outline, tinted at render
time like every other glyph) into the Material Symbols subset font at
U+F8F0. New tools/material-symbols-subset/add_custom_glyphs.py converts
the traced SVGs in custom/ into TrueType glyphs and is invoked by
subset.sh after pyftsubset, so font regenerations keep them.

With the logo identifying the pill, drop the verbose "OTS:" prefix:
the pill now reads icon + "2y" (or icon + "Pending", new
R.string.pending).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AgEpNtwnetPhETXQSdq4b5
2026-07-14 12:59:30 +00:00

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#!/usr/bin/env bash
#
# Subset commons/.../material_symbols_outlined.ttf to only the codepoints
# referenced from MaterialSymbols.kt. The full Google variable font is ~11 MB
# (≈3500 glyphs); the subset is ~410 KB.
#
# Run this whenever MaterialSymbols.kt gains or loses a codepoint, or when
# pulling a newer upstream font release.
#
# Inputs:
# $1 (optional) — path to a full upstream MaterialSymbolsOutlined-Regular.ttf
# to subset. If omitted, the script downloads the variable
# font from Google Fonts.
#
# Output:
# Overwrites commons/src/commonMain/composeResources/font/material_symbols_outlined.ttf
set -euo pipefail
REPO_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
SYMBOLS_KT="$REPO_ROOT/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/icons/symbols/MaterialSymbols.kt"
TARGET="$REPO_ROOT/commons/src/commonMain/composeResources/font/material_symbols_outlined.ttf"
if ! command -v pyftsubset >/dev/null 2>&1; then
echo "pyftsubset not found. Install with: pip install fonttools brotli" >&2
exit 1
fi
if [ "${1:-}" ]; then
SOURCE_TTF="$1"
else
SOURCE_TTF="$(mktemp -t material_symbols.XXXXXX.ttf)"
trap 'rm -f "$SOURCE_TTF"' EXIT
echo "Downloading upstream Material Symbols Outlined variable font..."
curl -fsSL -o "$SOURCE_TTF" \
"https://github.com/google/material-design-icons/raw/master/variablefont/MaterialSymbolsOutlined%5BFILL%2CGRAD%2Copsz%2Cwght%5D.ttf"
fi
CODEPOINTS_FILE="$(mktemp -t material_symbols_cp.XXXXXX.txt)"
trap 'rm -f "$CODEPOINTS_FILE" ${SOURCE_TTF:+}' EXIT
# Pull every \uXXXX literal out of MaterialSymbols.kt as U+XXXX, deduplicated.
grep -oE '\\u[A-Fa-f0-9]{4}' "$SYMBOLS_KT" | sort -u | sed 's/\\u/U+/' > "$CODEPOINTS_FILE"
count=$(wc -l < "$CODEPOINTS_FILE")
echo "Subsetting to $count codepoints from MaterialSymbols.kt"
pyftsubset "$SOURCE_TTF" \
--unicodes-file="$CODEPOINTS_FILE" \
--output-file="$TARGET" \
--layout-features='*' \
--no-hinting \
--desubroutinize \
--notdef-outline \
--recommended-glyphs \
--name-IDs='*' \
--name-legacy \
--name-languages='*' \
--glyph-names \
--symbol-cmap
# Bake in the custom (non-Material) glyphs from custom/ — third-party logos
# like OpenTimestamps that the upstream font will never carry.
python3 "$REPO_ROOT/tools/material-symbols-subset/add_custom_glyphs.py" "$TARGET"
echo "Wrote $TARGET ($(du -h "$TARGET" | cut -f1))"