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raw | patch | inline | side by side (parent: e662fc0)
author | Alvin Penner <penner@vaxxine.com> | |
Tue, 22 Dec 2009 00:13:41 +0000 (19:13 -0500) | ||
committer | Alvin Penner <penner@vaxxine.com> | |
Tue, 22 Dec 2009 00:13:41 +0000 (19:13 -0500) |
share/extensions/Barcode/EAN5.py | [new file with mode: 0644] | patch | blob |
diff --git a/share/extensions/Barcode/EAN5.py b/share/extensions/Barcode/EAN5.py
--- /dev/null
@@ -0,0 +1,67 @@
+'''
+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
+ 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
+
+ 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