ZacharyZhang-NY
b7fca0146d
ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git), ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.
17 lines
618 B
Python
17 lines
618 B
Python
"""Packs PNGs into a Windows .ico. Usage: ico.py out.ico in.png..."""
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import struct
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import sys
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out, pngs = sys.argv[1], sys.argv[2:]
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images = [open(path, "rb").read() for path in pngs]
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header = struct.pack("<HHH", 0, 1, len(images))
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offset = len(header) + 16 * len(images)
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entries = b""
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for data in images:
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# Size from the PNG header; 256 is written as 0.
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width, height = struct.unpack(">II", data[16:24])
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entries += struct.pack("<BBBBHHII", width % 256, height % 256, 0, 0, 1, 32, len(data), offset)
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offset += len(data)
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with open(out, "wb") as ico:
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ico.write(header + entries + b"".join(images))
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