Bryan Van Deusen
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
#!/usr/bin/env python3
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"""
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Create minimal placeholder PNG icons using only standard library.
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These are simple solid-color squares that Firefox will accept.
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"""
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import struct
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import zlib
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from pathlib import Path
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def create_png(width, height, rgb_color):
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"""Create a minimal PNG file with a solid color."""
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r, g, b = rgb_color
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def png_chunk(chunk_type, data):
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"""Create a PNG chunk with CRC."""
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chunk = chunk_type + data
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crc = zlib.crc32(chunk) & 0xffffffff
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return struct.pack('>I', len(data)) + chunk + struct.pack('>I', crc)
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# PNG signature
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signature = b'\x89PNG\r\n\x1a\n'
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# IHDR chunk (image header)
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ihdr_data = struct.pack('>IIBBBBB', width, height, 8, 2, 0, 0, 0)
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ihdr = png_chunk(b'IHDR', ihdr_data)
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# IDAT chunk (image data)
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# Create raw pixel data: each row starts with filter byte 0, then RGB pixels
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raw_data = b''
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for y in range(height):
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raw_data += b'\x00' # Filter byte (none)
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for x in range(width):
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raw_data += bytes([r, g, b])
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compressed = zlib.compress(raw_data, 9)
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idat = png_chunk(b'IDAT', compressed)
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# IEND chunk
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iend = png_chunk(b'IEND', b'')
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return signature + ihdr + idat + iend
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def main():
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icons_dir = Path(__file__).parent / 'icons'
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icons_dir.mkdir(exist_ok=True)
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# Primary blue color (#1976d2)
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color = (25, 118, 210)
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sizes = [16, 32, 48, 128]
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for size in sizes:
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png_data = create_png(size, size, color)
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output_path = icons_dir / f'icon-{size}.png'
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with open(output_path, 'wb') as f:
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f.write(png_data)
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print(f'Created {output_path} ({len(png_data)} bytes)')
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print('\nPlaceholder icons created!')
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print('Replace with custom icons for a better look.')
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if __name__ == '__main__':
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main()
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