make_icons.py

#!/usr/bin/env python3
"""
Generate platform icon files (.ico for Windows, .icns for macOS) from the
PortusSIM logo PNGs in assets/logo/.

Usage:  python make_icons.py

Requires Pillow (already in requirements.txt). The .icns is built with Pillow
where possible; on macOS you can alternatively use the native `iconutil`
(see build_mac.sh) for a perfectly conformant .icns.
"""
import os
from PIL import Image

HERE = os.path.dirname(os.path.abspath(__file__))
LOGO = os.path.join(HERE, "assets", "logo")


def _load(size):
    p = os.path.join(LOGO, f"portussim_mark_{size}.png")
    return Image.open(p).convert("RGBA") if os.path.exists(p) else None


def make_ico():
    """Windows .ico - multi-resolution, embeds 16-256px."""
    base = _load(256) or _load(512)
    if base is None:
        print("[!] no source PNG found for .ico"); return
    out = os.path.join(LOGO, "PortusSIM.ico")
    sizes = [(16, 16), (24, 24), (32, 32), (48, 48), (64, 64),
             (128, 128), (256, 256)]
    base.save(out, format="ICO", sizes=sizes)
    print(f"[ok] wrote {out}")


def make_icns():
    """macOS .icns via Pillow (good enough for PyInstaller bundling)."""
    base = _load(512) or _load(256)
    if base is None:
        print("[!] no source PNG found for .icns"); return
    out = os.path.join(LOGO, "PortusSIM.icns")
    try:
        base.save(out, format="ICNS")
        print(f"[ok] wrote {out}")
    except Exception as e:
        print(f"[!] Pillow could not write .icns ({e}).")
        print("  On macOS, generate it natively instead - see build_mac.sh.")


if __name__ == "__main__":
    make_ico()
    make_icns()