44 lines
947 B
Python
44 lines
947 B
Python
#!/usr/bin/env python
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"""
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Helpers for working with SVG.
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"""
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import xml.etree.ElementTree as ET
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import six
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HEADER = '<?xml version="1.0" standalone="no"?>\n' + \
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'<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"\n' + \
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'"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n'
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def stringify(root):
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"""
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Convert an SVG XML tree to a unicode string.
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"""
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if six.PY3:
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return ET.tostring(root, encoding='unicode')
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else:
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return ET.tostring(root, encoding='utf-8')
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def save(f, root):
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"""
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Save an SVG XML tree to a file.
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"""
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f.write(HEADER)
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f.write(stringify(root))
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def translate(x, y):
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"""
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Generate an SVG transform statement representing a simple translation.
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"""
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return 'translate(%i %i)' % (x, y)
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def rotate(deg, x, y):
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"""
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Generate an SVG transform statement representing rotation around a given
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point.
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"""
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return 'rotate(%i %i %i)' % (deg, x, y)
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