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Added printing requirements
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Tom Price
350
reportlab/graphics/barcode/eanbc.py
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350
reportlab/graphics/barcode/eanbc.py
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__all__=(
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'Ean13BarcodeWidget','isEanString',
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)
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from reportlab.graphics.shapes import Group, String, Rect
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from reportlab.lib import colors
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from reportlab.pdfbase.pdfmetrics import stringWidth
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from reportlab.lib.validators import isNumber, isColor, isString, Validator, isBoolean
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from reportlab.lib.attrmap import *
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from reportlab.graphics.charts.areas import PlotArea
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from reportlab.lib.units import mm
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from reportlab.lib.utils import asNative
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#work out a list of manufacturer codes....
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_eanNumberSystems = [
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('00-13', 'USA & Canada'),
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('20-29', 'In-Store Functions'),
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('30-37', 'France'),
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('40-44', 'Germany'),
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('45', 'Japan (also 49)'),
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('46', 'Russian Federation'),
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('471', 'Taiwan'),
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('474', 'Estonia'),
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('475', 'Latvia'),
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('477', 'Lithuania'),
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('479', 'Sri Lanka'),
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('480', 'Philippines'),
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('482', 'Ukraine'),
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('484', 'Moldova'),
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('485', 'Armenia'),
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('486', 'Georgia'),
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('487', 'Kazakhstan'),
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('489', 'Hong Kong'),
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('49', 'Japan (JAN-13)'),
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('50', 'United Kingdom'),
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('520', 'Greece'),
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('528', 'Lebanon'),
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('529', 'Cyprus'),
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('531', 'Macedonia'),
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('535', 'Malta'),
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('539', 'Ireland'),
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('54', 'Belgium & Luxembourg'),
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('560', 'Portugal'),
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('569', 'Iceland'),
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('57', 'Denmark'),
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('590', 'Poland'),
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('594', 'Romania'),
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('599', 'Hungary'),
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('600-601', 'South Africa'),
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('609', 'Mauritius'),
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('611', 'Morocco'),
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('613', 'Algeria'),
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('619', 'Tunisia'),
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('622', 'Egypt'),
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('625', 'Jordan'),
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('626', 'Iran'),
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('64', 'Finland'),
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('690-692', 'China'),
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('70', 'Norway'),
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('729', 'Israel'),
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('73', 'Sweden'),
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('740', 'Guatemala'),
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('741', 'El Salvador'),
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('742', 'Honduras'),
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('743', 'Nicaragua'),
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('744', 'Costa Rica'),
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('746', 'Dominican Republic'),
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('750', 'Mexico'),
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('759', 'Venezuela'),
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('76', 'Switzerland'),
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('770', 'Colombia'),
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('773', 'Uruguay'),
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('775', 'Peru'),
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('777', 'Bolivia'),
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('779', 'Argentina'),
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('780', 'Chile'),
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('784', 'Paraguay'),
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('785', 'Peru'),
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('786', 'Ecuador'),
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('789', 'Brazil'),
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('80-83', 'Italy'),
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('84', 'Spain'),
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('850', 'Cuba'),
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('858', 'Slovakia'),
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('859', 'Czech Republic'),
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('860', 'Yugloslavia'),
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('869', 'Turkey'),
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('87', 'Netherlands'),
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('880', 'South Korea'),
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('885', 'Thailand'),
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('888', 'Singapore'),
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('890', 'India'),
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('893', 'Vietnam'),
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('899', 'Indonesia'),
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('90-91', 'Austria'),
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('93', 'Australia'),
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('94', 'New Zealand'),
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('955', 'Malaysia'),
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('977', 'International Standard Serial Number for Periodicals (ISSN)'),
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('978', 'International Standard Book Numbering (ISBN)'),
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('979', 'International Standard Music Number (ISMN)'),
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('980', 'Refund receipts'),
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('981-982', 'Common Currency Coupons'),
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('99', 'Coupons')
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]
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manufacturerCodes = {}
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for (k, v) in _eanNumberSystems:
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words = k.split('-')
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if len(words)==2:
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fromCode = int(words[0])
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toCode = int(words[1])
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for code in range(fromCode, toCode+1):
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manufacturerCodes[code] = v
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else:
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manufacturerCodes[int(k)] = v
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def nDigits(n):
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class _ndigits(Validator):
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def test(self,x):
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return type(x) is str and len(x)<=n and len([c for c in x if c in "0123456789"])==n
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return _ndigits()
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class Ean13BarcodeWidget(PlotArea):
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codeName = "EAN13"
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_attrMap = AttrMap(BASE=PlotArea,
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value = AttrMapValue(nDigits(12), desc='the number'),
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fontName = AttrMapValue(isString, desc='fontName'),
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fontSize = AttrMapValue(isNumber, desc='font size'),
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x = AttrMapValue(isNumber, desc='x-coord'),
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y = AttrMapValue(isNumber, desc='y-coord'),
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barFillColor = AttrMapValue(isColor, desc='bar color'),
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barHeight = AttrMapValue(isNumber, desc='Height of bars.'),
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barWidth = AttrMapValue(isNumber, desc='Width of bars.'),
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barStrokeWidth = AttrMapValue(isNumber, desc='Width of bar borders.'),
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barStrokeColor = AttrMapValue(isColor, desc='Color of bar borders.'),
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textColor = AttrMapValue(isColor, desc='human readable text color'),
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humanReadable = AttrMapValue(isBoolean, desc='if human readable'),
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quiet = AttrMapValue(isBoolean, desc='if quiet zone to be used'),
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lquiet = AttrMapValue(isBoolean, desc='left quiet zone length'),
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rquiet = AttrMapValue(isBoolean, desc='right quiet zone length'),
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)
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_digits=12
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_start_right = 7 #for ean-13 left = [0:7] right=[7:13]
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_nbars = 113
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barHeight = 25.93*mm #millimeters
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barWidth = (37.29/_nbars)*mm
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humanReadable = 1
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_0csw = 1
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_1csw = 3
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#Left Hand Digits.
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_left = ( ("0001101", "0011001", "0010011", "0111101",
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"0100011", "0110001", "0101111", "0111011",
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"0110111", "0001011",
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), #odd left hand digits
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("0100111", "0110011", "0011011", "0100001",
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"0011101", "0111001", "0000101", "0010001",
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"0001001", "0010111"), #even left hand digits
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)
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_right = ("1110010", "1100110", "1101100", "1000010",
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"1011100", "1001110", "1010000", "1000100",
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"1001000", "1110100")
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quiet = 1
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rquiet = lquiet = None
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_tail = "101"
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_sep = "01010"
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_lhconvert={
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"0": (0,0,0,0,0,0),
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"1": (0,0,1,0,1,1),
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"2": (0,0,1,1,0,1),
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"3": (0,0,1,1,1,0),
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"4": (0,1,0,0,1,1),
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"5": (0,1,1,0,0,1),
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"6": (0,1,1,1,0,0),
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"7": (0,1,0,1,0,1),
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"8": (0,1,0,1,1,0),
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"9": (0,1,1,0,1,0)
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}
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fontSize = 8 #millimeters
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fontName = 'Helvetica'
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textColor = barFillColor = colors.black
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barStrokeColor = None
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barStrokeWidth = 0
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x = 0
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y = 0
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def __init__(self,value='123456789012',**kw):
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value = str(value) if isinstance(value,int) else asNative(value)
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self.value=max(self._digits-len(value),0)*'0'+value[:self._digits]
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for k, v in kw.items():
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setattr(self, k, v)
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width = property(lambda self: self.barWidth*(self._nbars-18+self._calc_quiet(self.lquiet)+self._calc_quiet(self.rquiet)))
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def wrap(self,aW,aH):
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return self.width,self.barHeight
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def _encode_left(self,s,a):
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cp = self._lhconvert[s[0]] #convert the left hand numbers
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_left = self._left
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z = ord('0')
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for i,c in enumerate(s[1:self._start_right]):
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a(_left[cp[i]][ord(c)-z])
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def _short_bar(self,i):
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i += 9 - self._lquiet
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return self.humanReadable and ((12<i<55) or (57<i<101))
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def _calc_quiet(self,v):
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if self.quiet:
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if v is None:
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v = 9
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else:
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x = float(max(v,0))/self.barWidth
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v = int(x)
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if v-x>0: v += 1
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else:
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v = 0
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return v
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def draw(self):
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g = Group()
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gAdd = g.add
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barWidth = self.barWidth
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width = self.width
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barHeight = self.barHeight
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x = self.x
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y = self.y
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gAdd(Rect(x,y,width,barHeight,fillColor=None,strokeColor=None,strokeWidth=0))
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s = self.value+self._checkdigit(self.value)
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self._lquiet = lquiet = self._calc_quiet(self.lquiet)
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rquiet = self._calc_quiet(self.rquiet)
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b = [lquiet*'0',self._tail] #the signal string
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a = b.append
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self._encode_left(s,a)
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a(self._sep)
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z = ord('0')
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_right = self._right
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for c in s[self._start_right:]:
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a(_right[ord(c)-z])
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a(self._tail)
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a(rquiet*'0')
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fontSize = self.fontSize
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barFillColor = self.barFillColor
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barStrokeWidth = self.barStrokeWidth
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barStrokeColor = self.barStrokeColor
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fth = fontSize*1.2
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b = ''.join(b)
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lrect = None
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for i,c in enumerate(b):
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if c=="1":
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dh = self._short_bar(i) and fth or 0
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yh = y+dh
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if lrect and lrect.y==yh:
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lrect.width += barWidth
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else:
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lrect = Rect(x,yh,barWidth,barHeight-dh,fillColor=barFillColor,strokeWidth=barStrokeWidth,strokeColor=barStrokeColor)
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gAdd(lrect)
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else:
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lrect = None
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x += barWidth
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if self.humanReadable: self._add_human_readable(s,gAdd)
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return g
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def _add_human_readable(self,s,gAdd):
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barWidth = self.barWidth
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fontSize = self.fontSize
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textColor = self.textColor
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fontName = self.fontName
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fth = fontSize*1.2
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# draw the num below the line.
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c = s[0]
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w = stringWidth(c,fontName,fontSize)
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x = self.x+barWidth*(self._lquiet-8)
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y = self.y + 0.2*fth
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gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor))
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x = self.x + (33-9+self._lquiet)*barWidth
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c = s[1:7]
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gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
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x += 47*barWidth
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c = s[7:]
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gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
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def _checkdigit(cls,num):
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z = ord('0')
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iSum = cls._0csw*sum([(ord(x)-z) for x in num[::2]]) \
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+ cls._1csw*sum([(ord(x)-z) for x in num[1::2]])
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return chr(z+((10-(iSum%10))%10))
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_checkdigit=classmethod(_checkdigit)
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class Ean8BarcodeWidget(Ean13BarcodeWidget):
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codeName = "EAN8"
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_attrMap = AttrMap(BASE=Ean13BarcodeWidget,
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value = AttrMapValue(nDigits(7), desc='the number'),
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)
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_start_right = 4 #for ean-13 left = [0:7] right=[7:13]
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_nbars = 85
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_digits=7
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_0csw = 3
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_1csw = 1
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def _encode_left(self,s,a):
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cp = self._lhconvert[s[0]] #convert the left hand numbers
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_left = self._left[0]
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z = ord('0')
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for i,c in enumerate(s[0:self._start_right]):
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a(_left[ord(c)-z])
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def _short_bar(self,i):
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i += 9 - self._lquiet
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return self.humanReadable and ((12<i<41) or (43<i<73))
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def _add_human_readable(self,s,gAdd):
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barWidth = self.barWidth
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fontSize = self.fontSize
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textColor = self.textColor
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fontName = self.fontName
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fth = fontSize*1.2
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# draw the num below the line.
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y = self.y + 0.2*fth
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x = (26.5-9+self._lquiet)*barWidth
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c = s[0:4]
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gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
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x = (59.5-9+self._lquiet)*barWidth
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c = s[4:]
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gAdd(String(x,y,c,fontName=fontName,fontSize=fontSize,fillColor=textColor,textAnchor='middle'))
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class UPCA(Ean13BarcodeWidget):
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codeName = "UPCA"
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_attrMap = AttrMap(BASE=Ean13BarcodeWidget,
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value = AttrMapValue(nDigits(11), desc='the number'),
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)
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_start_right = 6
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_digits = 11
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_0csw = 3
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_1csw = 1
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_nbars = 1+7*11+2*3+5
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