Editor

tools/generate_pico_font.py

@@ -4,12 +4,11 @@ import argparse
 import difflib
 from pathlib import Path
 
-from PIL import Image, ImageDraw, ImageFont
+from PIL import Image, ImageDraw, ImageFont, features
 
 
 REPO = Path(__file__).resolve().parents[1]
 FONT_PATH = REPO / "package/assets/fonts/petaluma/PetalumaScript.otf"
-OUTPUT_PATH = REPO / "src/vamp_style/font.cpp"
 FONT_SIZE = 32
 FONT_HEIGHT = 36
 FONT_MAX_WIDTH = 28
@@ -63,7 +62,9 @@ def pair_adjustments(font: ImageFont.FreeTypeFont) -> list[tuple[int, int]]:
 
 
 def generate() -> str:
-  font = ImageFont.truetype(str(FONT_PATH), FONT_SIZE)
+  if not features.check_feature("raqm"):
+    raise RuntimeError("Font generation requires Pillow with Raqm support; install libfribidi0 on Debian/Ubuntu.")
+  font = ImageFont.truetype(str(FONT_PATH), FONT_SIZE, layout_engine=ImageFont.Layout.RAQM)
   min_top = min(font.getbbox(chr(value))[1] for value in range(FIRST_CODEPOINT, LAST_CODEPOINT + 1))
   y_offset = max(0, -min_top)
   adjustments = pair_adjustments(font)
@@ -173,27 +174,31 @@ def generate() -> str:
 
 def main() -> int:
   parser = argparse.ArgumentParser()
+  parser.add_argument("--output", type=Path, required=True)
   parser.add_argument("--check", action="store_true")
   args = parser.parse_args()
 
   generated = generate()
   if args.check:
-    current = OUTPUT_PATH.read_text()
+    if not args.output.is_file():
+      parser.error(f"generated font is missing: {args.output}")
+    current = args.output.read_text(encoding="utf-8")
     if current == generated:
       print("pico font is up to date")
       return 0
     diff = difflib.unified_diff(
       current.splitlines(),
       generated.splitlines(),
-      fromfile=str(OUTPUT_PATH),
-      tofile=f"{OUTPUT_PATH} (generated)",
+      fromfile=str(args.output),
+      tofile=f"{args.output} (generated)",
       lineterm="",
     )
     print("\n".join(diff))
     return 1
 
-  OUTPUT_PATH.write_text(generated)
-  print(f"generated {OUTPUT_PATH}")
+  args.output.parent.mkdir(parents=True, exist_ok=True)
+  args.output.write_text(generated, encoding="utf-8")
+  print(f"generated {args.output}")
   return 0