60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
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"""Generates the PWA icons in web/public from the MealQuest logo.
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Run from the repository root with Pillow installed:
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python3 web/scripts/generate-icons.py
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The logo fills the regular icons edge to edge. The maskable icon shrinks it
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onto the colour of its own parchment, so the banner stays inside
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the circular safe zone (radius 40% of the icon) that launchers may crop to.
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"""
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from pathlib import Path
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from PIL import Image, ImageDraw, ImageFilter, ImageStat
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ROOT = Path(__file__).resolve().parents[2]
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SOURCE = ROOT / "design" / "logos" / "logo_v1_2Oct2026.jpg"
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PUBLIC = ROOT / "web" / "public"
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MASKABLE_SCALE = 0.66
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def resized(logo: Image.Image, size: int) -> Image.Image:
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return logo.resize((size, size), Image.Resampling.LANCZOS)
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def maskable(logo: Image.Image, size: int) -> Image.Image:
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# The padding is the median colour of the logo's top edge, which is bare
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# parchment; a feathered edge hides the seam.
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top_edge = ImageStat.Stat(logo.crop((0, 0, logo.width, logo.height // 40)))
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canvas = Image.new("RGB", (size, size), tuple(round(c) for c in top_edge.median))
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inner = round(size * MASKABLE_SCALE)
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offset = (size - inner) // 2
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feather = Image.new("L", (inner, inner), 0)
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margin = inner // 24
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ImageDraw.Draw(feather).rectangle((margin, margin, inner - margin, inner - margin), fill=255)
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feather = feather.filter(ImageFilter.GaussianBlur(margin / 2))
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canvas.paste(resized(logo, inner), (offset, offset), feather)
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return canvas
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def main() -> None:
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logo = Image.open(SOURCE).convert("RGB")
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if logo.width != logo.height:
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raise SystemExit(f"{SOURCE} is {logo.width}x{logo.height}; the logo must be square")
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outputs = {
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PUBLIC / "icons" / "icon-192.png": resized(logo, 192),
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PUBLIC / "icons" / "icon-512.png": resized(logo, 512),
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PUBLIC / "icons" / "icon-maskable-512.png": maskable(logo, 512),
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PUBLIC / "apple-touch-icon.png": resized(logo, 180),
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}
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for path, image in outputs.items():
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path.parent.mkdir(parents=True, exist_ok=True)
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image.save(path, optimize=True)
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print(f"wrote {path.relative_to(ROOT)} ({image.width}x{image.height})")
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if __name__ == "__main__":
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main()
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