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Font generation script #4429

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Font generation script #4429

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37fa42d
chore(core/codegen): correct font destination directories
bieleluk Nov 21, 2024
df947aa
chore(core/codegen): compute memory footprint for generated fonts
bieleluk Nov 21, 2024
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18 changes: 16 additions & 2 deletions core/tools/codegen/gen_font.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,8 @@ def _normalize(s: str) -> str:
HERE = Path(__file__).parent
CORE_ROOT = HERE.parent.parent
FONTS_DIR = HERE / "fonts"
OUT_DIR = HERE / ".." / ".." / "embed" / "drv" / "gfx" / "fonts"
C_FONTS_DEST = CORE_ROOT / "embed" / "drv" / "gfx" / "fonts"
OUT_DIR = HERE / ".." / ".." / "embed" / "gfx" / "fonts"
C_FONTS_DEST = CORE_ROOT / "embed" / "gfx" / "fonts"
JSON_FONTS_DEST = CORE_ROOT / "translations" / "fonts"

MIN_GLYPH = ord(" ")
Expand Down Expand Up @@ -276,6 +276,8 @@ def __init__(
self.fontname = f"{name.lower()}_{style.lower()}_{size}"
self.font_ymin = 0
self.font_ymax = 0
self.mem_footprint = 0 # size of all font characters in uC in Bytes
self.glyph_count = 0 # number of characters in the font

@property
def _name_style_size(self) -> str:
Expand Down Expand Up @@ -304,6 +306,8 @@ def write_c_files(self) -> None:

def write_foreign_json(self, upper_cased=False) -> None:
for lang, language_chars in all_languages.items():
mem_footprint = 0 # size of all font characters in uC in Bytes
glyph_count = 0 # number of characters in the font
fontdata = {}
for item in language_chars:
c = _normalize(item)
Expand All @@ -317,12 +321,15 @@ def write_foreign_json(self, upper_cased=False) -> None:
glyph = Glyph.from_face(self.face, c, self.shaveX)
glyph.print_metrics()
fontdata[map_from] = glyph.to_bytes(self.bpp).hex()
mem_footprint += len(glyph.to_bytes(self.bpp))
glyph_count += 1
file = (
JSON_FONTS_DEST
/ f"font_{self.fontname}{'_upper' if upper_cased else ''}_{lang}.json"
)
json_content = json.dumps(fontdata, indent=2, ensure_ascii=False)
file.write_text(json_content + "\n")
print(f"Memory footprint of {self.name} {self.style} {self.size} {lang} extension set is {glyph_count} characters {mem_footprint} Bytes")

def write_char_widths_files(self) -> None:
chars: set[str] = set()
Expand Down Expand Up @@ -397,10 +404,15 @@ def _write_c_file_content(self, f: TextIO) -> None:
f.write(f" Font_{self._name_style_size}_glyph_{i},{comment}\n")
f.write("};\n")

print(f"Memory footprint of {self.name} {self.style} {self.size} basic character set is {self.glyph_count} characters {self.mem_footprint} Bytes")

def _write_char_definition(self, f: TextIO, c: str, i: int) -> None:
self._load_char(c)
glyph = Glyph.from_face(self.face, c, self.shaveX)
glyph.print_metrics()
self.mem_footprint += len(glyph.to_bytes(self.bpp))
self.glyph_count += 1

definition_line = glyph.get_definition_line(self._name_style_size, self.bpp, i)
f.write(definition_line)

Expand All @@ -424,6 +436,8 @@ def _get_nonprintable_definition_line(self, upper: bool = False) -> str:
c = "?"
self._load_char(c)
glyph = Glyph.from_face(self.face, c, self.shaveX, inverse_colors=True)
self.mem_footprint += len(glyph.to_bytes(self.bpp))
self.glyph_count += 1
if upper:
return glyph.get_definition_line(
f"{self._name_style_size}_upper", self.bpp, "nonprintable", static=False
Expand Down
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