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- #!/bin/env python
- #Copyright ReportLab Europe Ltd. 2000-2017
- #see license.txt for license details
- #history https://hg.reportlab.com/hg-public/reportlab/log/tip/src/reportlab/lib/units.py
- __version__='3.3.0'
- __doc__='''Defines inch, cm, mm etc as multiples of a point
- You can now in user-friendly units by doing::
- from reportlab.lib.units import inch
- r = Rect(0, 0, 3 * inch, 6 * inch)
- '''
- inch = 72.0
- cm = inch / 2.54
- mm = cm * 0.1
- pica = 12.0
- def toLength(s):
- '''convert a string to a length'''
- try:
- if s[-2:]=='cm': return float(s[:-2])*cm
- if s[-2:]=='in': return float(s[:-2])*inch
- if s[-2:]=='pt': return float(s[:-2])
- if s[-1:]=='i': return float(s[:-1])*inch
- if s[-2:]=='mm': return float(s[:-2])*mm
- if s[-4:]=='pica': return float(s[:-4])*pica
- return float(s)
- except:
- raise ValueError("Can't convert '%s' to length" % s)
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