marseymoji/colrv1/README.md

COLRv1 Build

We assume the bitmap version with equivalent coverage exists and contains emojicompat metadata.

Build Steps

1. Check the list of sources in the config files is in sync with the current sources

   # running from the noto-emoji repository root directory
   python colrv1_generate_configs.py
   git diff colrv1/*.toml
   

   If configs are in sync, the colrv1/*.toml files should contain no diffs.

2. Compile the COLRv1 fonts

   time nanoemoji *.toml
   cp build/NotoColorEmoji.ttf ../fonts/Noto-COLRv1.ttf
   cp build/NotoColorEmoji-noflags.ttf ../fonts/Noto-COLRv1-noflags.ttf
   

3. Post-process COLRv1 fonts

   • Adds some additional sequences, fixes up name, etc
   • At time of writing only the noflags version is for Android

   # Assumed to be in a python3 environment with requirements.txt fulfilled
   python colrv1_postproc.py
   

4. Add emojicompat metadata to the Android font and pass to the Android team

   • TODO write detailed instructions