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index 8a93b497b747849529953db0b23a5587e0a90f43..68ff997387ca75a182086abc7af8dd5608797b5d 100644 (file)
-#!/usr/bin/env python
-'''
-Copyright (C) 2007 Martin Owens
-Copyright (C) 2009 Aaron C Spike
-
-Thanks to Lineaire Chez of Inkbar ( www.inkbar.lineaire.net )
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-'''
-
-from Base import Barcode
-import sys
-
-mapLeftFamily = [
- [ "0001101","0011001","0010011","0111101","0100011","0110001","0101111","0111011","0110111","0001011" ], #L
- [ "0100111","0110011","0011011","0100001","0011101","0111001","0000101","0010001","0001001","0010111" ], #G
-]
-mapFamily = [ '11000','10100','10010','10001','01100','00110','00011','01010','01001','00101' ]
-
-startBar = '01011';
-sepBar = '01';
-
-class Object(Barcode):
- def encode(self, number):
- result = []
- self.x += 110.0 # horizontal offset so it does not overlap EAN13
+#
+# Copyright (C) 2009 Aaron C Spike
+# 2010 Martin Owens
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+"""
+Python barcode renderer for EAN5 barcodes. Designed for use with Inkscape.
+"""
+
+from BaseEan import EanBarcode
+
+FAMS = [ '11000','10100','10010','10001','01100','00110','00011','01010','01001','00101' ]
+START = '01011'
+
+class Object(EanBarcode):
+ """Provide an Ean5 barcode generator"""
+ name = 'ean5'
+ length = 5
+
+ def _encode(self, number):
+ self.x += 110.0 # horiz offset so it does not overlap EAN13
self.y -= self.height + 5 # move the text to the top
- if len(number) != 5 or not number.isdigit():
- sys.stderr.write("Can not encode '" + number + "' into EAN5 Barcode, Size must be 5 numbers only\n")
- return
-
- check = self.getChecksum(number)
- family = mapFamily[check]
-
- for i in range(5):
- mapLeft = mapLeftFamily[int(family[i])]
- result.append(mapLeft[int(number[i])])
-
- self.label = number[0]
- for i in range(1,5):
- self.label += ' ' + number[i]
- self.inclabel = self.label
- return startBar + '01'.join(result)
-
- def getChecksum(self, number):
- return sum([int(n)*int(m) for n,m in zip(number, '39393')]) % 10
+ self.label = ' '.join(self.space(number))
+ family = sum([int(n)*int(m) for n,m in zip(number, '39393')]) % 10
+ return START + '01'.join(self.encode_interleaved(family, number, FAMS))
- def getStyle(self, index):
- result = { 'width' : '1', 'top' : int(self.y) + self.height + 5 + int(self.fontSize()), 'write' : True }
- if index==0: # White Space
- result['write'] = False
- elif index==1: # Black Bar
- result['height'] = int(self.height)
- elif index==2: # Guide Bar
- result['height'] = int(self.height) + 5
- return result