Claudio Schaad
73ed2e2cf1
Notes are saved as markdown pages in a Nextcloud collective via the Collectives OCS API (page metadata/creation) and WebDAV (content read/append), following the same npm-workspaces + session-auth architecture as CityTracker. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NvmYFQSMqs2N3q2zUDNTVn
32 lines
994 B
Python
32 lines
994 B
Python
import struct
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import zlib
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import os
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def make_png(path, size, rgb):
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width = height = size
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r, g, b = rgb
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raw = bytearray()
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for _ in range(height):
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raw.append(0) # filter type 0 for each scanline
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for _ in range(width):
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raw += bytes([r, g, b])
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compressed = zlib.compress(bytes(raw), 9)
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def chunk(tag, data):
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return struct.pack(">I", len(data)) + tag + data + struct.pack(
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">I", zlib.crc32(tag + data) & 0xFFFFFFFF
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)
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sig = b"\x89PNG\r\n\x1a\n"
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ihdr = struct.pack(">IIBBBBB", width, height, 8, 2, 0, 0, 0)
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png = sig + chunk(b"IHDR", ihdr) + chunk(b"IDAT", compressed) + chunk(b"IEND", b"")
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os.makedirs(os.path.dirname(path), exist_ok=True)
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with open(path, "wb") as f:
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f.write(png)
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if __name__ == "__main__":
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color = (31, 111, 235) # brand blue
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make_png("public/icons/icon-192.png", 192, color)
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make_png("public/icons/icon-512.png", 512, color)
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print("Icons generated")
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