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index 22902f2e4d22d73c57a2f8434440bc1248e0345b..d980c6c865359c972f9e77f92ed60adcc665ff07 100644 (file)
-#!/usr/bin/env python
-'''
-Copyright (C) 2007 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
-'''
+#
+# Copyright (C) 2007 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 RM4CC barcodes. Designed for use with Inkscape.
+"""
from Base import Barcode
map = {
- '(' : '25',
- ')' : '3',
- '0' : '05053535',
- '1' : '05152535',
- '2' : '05153525',
- '3' : '15052535',
- '4' : '15053525',
- '5' : '15152525',
- '6' : '05251535',
- '7' : '05350535',
- '8' : '05351525',
- '9' : '15250535',
- 'A' : '15251525',
- 'B' : '15350525',
- 'C' : '05253515',
- 'D' : '05352515',
- 'E' : '05353505',
- 'F' : '15252515',
- 'G' : '15253505',
- 'H' : '15352505',
- 'I' : '25051535',
- 'J' : '25150535',
- 'K' : '25151525',
- 'L' : '35050535',
- 'M' : '35051525',
- 'N' : '35150525',
- 'O' : '25053525',
- 'P' : '25152515',
- 'Q' : '25153505',
- 'R' : '35052515',
- 'S' : '35053505',
- 'T' : '35152505',
- 'U' : '25251515',
- 'V' : '25350515',
- 'W' : '25351505',
- 'X' : '35250515',
- 'Y' : '35251505',
- 'Z' : '35350505',
+ '(' : '25',
+ ')' : '3',
+ '0' : '05053535',
+ '1' : '05152535',
+ '2' : '05153525',
+ '3' : '15052535',
+ '4' : '15053525',
+ '5' : '15152525',
+ '6' : '05251535',
+ '7' : '05350535',
+ '8' : '05351525',
+ '9' : '15250535',
+ 'A' : '15251525',
+ 'B' : '15350525',
+ 'C' : '05253515',
+ 'D' : '05352515',
+ 'E' : '05353505',
+ 'F' : '15252515',
+ 'G' : '15253505',
+ 'H' : '15352505',
+ 'I' : '25051535',
+ 'J' : '25150535',
+ 'K' : '25151525',
+ 'L' : '35050535',
+ 'M' : '35051525',
+ 'N' : '35150525',
+ 'O' : '25053525',
+ 'P' : '25152515',
+ 'Q' : '25153505',
+ 'R' : '35052515',
+ 'S' : '35053505',
+ 'T' : '35152505',
+ 'U' : '25251515',
+ 'V' : '25350515',
+ 'W' : '25351505',
+ 'X' : '35250515',
+ 'Y' : '35251505',
+ 'Z' : '35350505',
}
check = ['ZUVWXY','501234','B6789A','HCDEFG','NIJKLM','TOPQRS']
+(BAR_TRACK, BAR_DOWN, BAR_UP, BAR_FULL, BAR_NONE, WHITE_SPACE) = range(6)
class Object(Barcode):
- def encode(self, text):
- result = ''
+ def encode(self, text):
+ result = ''
- self.height = 18
- text = text.upper()
- text.replace('(', '')
- text.replace(')', '')
+ self.height = 18
+ text = text.upper()
+ text.replace('(', '')
+ text.replace(')', '')
- text = '(' + text + self.checksum(text) + ')'
+ text = '(' + text + self.checksum(text) + ')'
- i = 0
- for char in text:
- if map.has_key(char):
- result = result + map[char]
-
- i = i + 1
+ i = 0
+ for char in text:
+ if map.has_key(char):
+ result = result + map[char]
+
+ i = i + 1
- self.inclabel = text
- return result;
+ self.inclabel = text
+ return result;
- # given a string of data, return the check character
- def checksum(self, text):
- total_lower = 0
- total_upper = 0
- for char in text:
- if map.has_key(char):
- bars = map[char][0:8:2]
- lower = 0
- upper = 0
+ # given a string of data, return the check character
+ def checksum(self, text):
+ total_lower = 0
+ total_upper = 0
+ for char in text:
+ if map.has_key(char):
+ bars = map[char][0:8:2]
+ lower = 0
+ upper = 0
- if int(bars[0]) & 1:
- lower = lower + 4
- if int(bars[1]) & 1:
- lower = lower + 2
- if int(bars[2]) & 1:
- lower = lower + 1
- if int(bars[0]) & 2:
- upper = upper + 4
- if int(bars[1]) & 2:
- upper = upper + 2
- if int(bars[2]) & 2:
- upper = upper + 1
- total_lower = total_lower + (lower % 6)
- total_upper = total_upper + (upper % 6)
+ if int(bars[0]) & 1:
+ lower = lower + 4
+ if int(bars[1]) & 1:
+ lower = lower + 2
+ if int(bars[2]) & 1:
+ lower = lower + 1
+ if int(bars[0]) & 2:
+ upper = upper + 4
+ if int(bars[1]) & 2:
+ upper = upper + 2
+ if int(bars[2]) & 2:
+ upper = upper + 1
+ total_lower = total_lower + (lower % 6)
+ total_upper = total_upper + (upper % 6)
- total_lower = total_upper % 6
- total_upper = total_upper % 6
-
- checkchar = check[total_upper][total_lower]
- return checkchar
+ total_lower = total_upper % 6
+ total_upper = total_upper % 6
+
+ checkchar = check[total_upper][total_lower]
+ return checkchar
- def getStyle(self, index):
- result = { 'width' : 2, 'write' : True, 'top' : int(self.y) }
- if index==0: # Track Bar
- result['top'] = result['top'] + 6
- result['height'] = 5
- elif index==1: # Decender Bar
- result['top'] = result['top'] + 6
- result['height'] = 11
- elif index==2: # Accender Bar
- result['height'] = 11
- elif index==3: # Full Bar
- result['height'] = 17
- elif index==5: # White Space
- result['write'] = False
- return result
+ def getStyle(self, index):
+ """Royal Mail Barcodes use a completely different style"""
+ result = { 'width' : 2, 'write' : True, 'top' : 0 }
+ if index == BAR_TRACK: # Track Bar
+ result['top'] = 6
+ result['height'] = 5
+ elif index == BAR_DOWN: # Decender Bar
+ result['top'] = 6
+ result['height'] = 11
+ elif index == BAR_UP: # Accender Bar
+ result['height'] = 11
+ elif index == BAR_FULL: # Full Bar
+ result['height'] = 17
+ elif index == WHITE_SPACE: # White Space
+ result['write'] = False
+ return result