cappy4king
/
marseymoji
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update postproc script and instructions

pull/401/head^2
Rod S 2022-09-06 10:37:41 -07:00
parent 9aca844e1b
commit 58e371b3d4
2 changed files with 37 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
colrv1/README.md
View File

@ -23,11 +23,14 @@ contains emojicompat metadata.
cp build/NotoColorEmoji-noflags.ttf ../fonts/Noto-COLRv1-noflags.ttf cp build/NotoColorEmoji-noflags.ttf ../fonts/Noto-COLRv1-noflags.ttf
``` ```
1. Post-process COLRv1 font for Android 1. Post-process COLRv1 fonts
* Adds some additional sequences, fixes up `name`, etc
* At time of writing only the noflags version is for Android * At time of writing only the noflags version is for Android
```shell ```shell
# Assumed to be in a python3 environment with requirements.txt fulfilled # Assumed to be in a python3 environment with requirements.txt fulfilled
python colrv1_postproc.py colrv1/build/NotoColorEmoji-noflags.ttf \ python colrv1_postproc.py
PATH_TO/NotoColorEmojiCompat.ttf
``` ```
1. Add emojicompat metadata to the Android font and pass to the Android team
* TODO write detailed instructions

59
colrv1_postproc.py
View File

@ -1,5 +1,7 @@
""" """
Post-nanoemoji processing of the Noto COLRv1 Emoji file. Post-nanoemoji processing of the Noto COLRv1 Emoji files.
Adds additional sequences to properly support Safari, corrects 'name', etc.
For now substantially based on copying from a correct bitmap build. For now substantially based on copying from a correct bitmap build.
""" """
@ -18,9 +20,10 @@ from pathlib import Path
from colrv1_add_soft_light_to_flags import add_soft_light_to_flags from colrv1_add_soft_light_to_flags import add_soft_light_to_flags
_OUTPUT_FILE = { _CBDT_FILE = Path("fonts/NotoColorEmoji.ttf")
"NotoColorEmoji-noflags.ttf": "fonts/Noto-COLRv1-noflags.ttf", _COLR_FILES = {
"NotoColorEmoji.ttf": "fonts/Noto-COLRv1.ttf", Path("fonts/Noto-COLRv1-noflags.ttf"),
Path("fonts/Noto-COLRv1.ttf"),
} }
@ -32,14 +35,6 @@ def _is_cbdt(font):
return "CBDT" in font return "CBDT" in font
def _is_compat_font(font):
return "meta" in font and "Emji" in font["meta"].data
def _copy_emojicompat_data(colr_font, cbdt_font):
colr_font["meta"] = cbdt_font["meta"]
def _set_name(name_table, nameID): def _set_name(name_table, nameID):
name_table.getName(value, nameID, 3, 1, 0x409) name_table.getName(value, nameID, 3, 1, 0x409)
@ -94,7 +89,7 @@ def _add_cmap_entries(colr_font, codepoint, glyph_name):
if not _is_bmp(codepoint) and table.format == 4: if not _is_bmp(codepoint) and table.format == 4:
continue continue
table.cmap[codepoint] = glyph_name table.cmap[codepoint] = glyph_name
print(f"Map 0x{codepoint:04x} to {glyph_name}, format {table.format}") #print(f"Map 0x{codepoint:04x} to {glyph_name}, format {table.format}")
FLAG_TAGS = set(range(0xE0030, 0xE0039 + 1)) | set(range(0xE0061, 0xE007A + 1)) FLAG_TAGS = set(range(0xE0030, 0xE0039 + 1)) | set(range(0xE0061, 0xE007A + 1))
@ -113,7 +108,7 @@ def _map_missing_flag_tag_chars_to_empty_glyphs(colr_font):
hmtx_table = colr_font["hmtx"] hmtx_table = colr_font["hmtx"]
glyph_order_size = len(glyf_table.glyphOrder) glyph_order_size = len(glyf_table.glyphOrder)
for cp in tag_cps: for cp in tag_cps:
print(f"Map 0x{cp:04x} to a blank glyf") #print(f"Map 0x{cp:04x} to a blank glyf")
glyph_name = f"u{cp:04X}" glyph_name = f"u{cp:04X}"
assert glyph_name not in glyf_table, f"{glyph_name} already in glyf" assert glyph_name not in glyf_table, f"{glyph_name} already in glyf"
assert glyph_name not in hmtx_table.metrics, f"{glyph_name} already in hmtx" assert glyph_name not in hmtx_table.metrics, f"{glyph_name} already in hmtx"
@ -288,29 +283,22 @@ def _add_fallback_subs_for_unknown_flags(colr_font):
font_data.delete_from_cmap(colr_font, [UNKNOWN_FLAG_PUA]) font_data.delete_from_cmap(colr_font, [UNKNOWN_FLAG_PUA])
def main(argv): def _font(path, check_fn, check_fail_str):
if len(argv) != 3: assert path.is_file(), path
raise ValueError( font = ttLib.TTFont(path)
"Must have two args, a COLRv1 font and a CBDT emojicompat font" if not check_fn(font):
) raise ValueError(path + check_fail_str)
return font
colr_file = Path(argv[1])
assert colr_file.is_file()
assert colr_file.name in _OUTPUT_FILE
colr_font = ttLib.TTFont(colr_file)
if not _is_colrv1(colr_font):
raise ValueError("First arg must be a COLRv1 font")
cbdt_file = Path(argv[2]) def main(_):
assert cbdt_file.is_file() cbdt_font = _font(_CBDT_FILE, _is_cbdt, " must be a CBDT font")
cbdt_font = ttLib.TTFont(cbdt_file)
if not _is_cbdt(cbdt_font) or not _is_compat_font(cbdt_font):
raise ValueError("Second arg must be a CBDT emojicompat font")
print(f"COLR {colr_file.absolute()}") for colr_file in _COLR_FILES:
print(f"CBDT {cbdt_file.absolute()}") colr_font = _font(colr_file, _is_colrv1, " must be a COLRv1 font")
print(f"Updating {colr_file} from {_CBDT_FILE}")
_copy_emojicompat_data(colr_font, cbdt_font)
_copy_names(colr_font, cbdt_font) _copy_names(colr_font, cbdt_font)
# CBDT build step: @$(PYTHON) $(PUA_ADDER) "$@" "$@-with-pua" # CBDT build step: @$(PYTHON) $(PUA_ADDER) "$@" "$@-with-pua"
@ -326,9 +314,8 @@ def main(argv):
_add_fallback_subs_for_unknown_flags(colr_font) _add_fallback_subs_for_unknown_flags(colr_font)
out_file = Path(_OUTPUT_FILE[colr_file.name]).absolute() print("Writing", colr_file)
print("Writing", out_file) colr_font.save(colr_file)
colr_font.save(out_file)
if __name__ == "__main__": if __name__ == "__main__":