Skip to content

Added PDF417 barcode type ^B7 #52

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
theo-bender wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Added PDF417 barcode type ^B7 #52

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
40 changes: 33 additions & 7 deletions zpl/label.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -304,7 +304,8 @@ def field_orientation(self, orientation, justification=None):

def _barcode_config(self,height, barcode_type, orientation, check_digit,
print_interpretation_line, print_interpretation_line_above,
magnification, errorCorrection, mask, mode):
magnification, errorCorrection, mask, mode,
columns, rows, truncate):
# TODO split into multiple functions?
# TODO support all ^B barcode types

Expand All @@ -315,6 +316,19 @@ def _barcode_config(self,height, barcode_type, orientation, check_digit,
elif barcode_type == '3':
barcode_zpl = '^B{barcode_type}{orientation},{check_digit},{height:d},{print_interpretation_line},' \
'{print_interpretation_line_above}'.format(**locals())

#PDF417
elif barcode_type == '7':
assert errorCorrection in [0, 1, 2, 3, 4, 5, 6, 7, 8,
'0', '1', '2', '3', '4', '5', '6', '7', '8'], \
'Error detection and correction may be 0 (error detection only), ' \
'or 1 - 8 (error detection and correction)'
assert columns is None or 1<= columns <= 30, 'Columns must be None or an integer from 1-30'
assert rows is None or 3<= rows <= 90, 'Rows must be None or an integer from 3-90'
assert truncate in 'NY', 'Truncation may be N (no truncation) or Y (perform truncation)'
columns = columns or '' #Replace empty values with blank string.
rows = rows or '' #Leaving these blank allows the barcode to be dynamically sized based on encoded data size
barcode_zpl = '^B{barcode_type}{orientation},{height:d},{errorCorrection},{columns},{rows},{truncate}'.format(**locals())

#QR code
elif barcode_type == 'Q':
Expand Down Expand Up @@ -350,7 +364,8 @@ def _barcode_config(self,height, barcode_type, orientation, check_digit,

def write_barcode(self, height, barcode_type, orientation='N', check_digit='N',
print_interpretation_line='Y', print_interpretation_line_above='N',
magnification=1, errorCorrection='Q', mask='7', mode='N'):
magnification=1, errorCorrection='Q', mask='7', mode='N',
columns=None, rows=None, truncate='N'):

print('The write_barcode() function is kept for backward compatibility, it is recommended to use the barcode() function instead.')

Expand All @@ -359,18 +374,21 @@ def write_barcode(self, height, barcode_type, orientation='N', check_digit='N',


self.code += self._barcode_config(height, barcode_type, orientation, check_digit, \
print_interpretation_line, print_interpretation_line_above, magnification, errorCorrection, mask, mode)
print_interpretation_line, print_interpretation_line_above, magnification, errorCorrection, mask, mode,
columns, rows, truncate)


def barcode(self, barcode_type, code, height=70, orientation='N', check_digit='N',
print_interpretation_line='Y', print_interpretation_line_above='N',
magnification=1, errorCorrection='Q', mask='7', mode='N'):
magnification=1, errorCorrection='Q', mask='7', mode='N',
columns=None, rows=None, truncate='N'):
"""
Creates a barcode of selected type

*barcode_type*
'2': Interleaved 2 of 5 Bar Code
'3': Code 39 Bar Code
'7': PDF417 Bar Code
'Q': QR Code Bar Code
'U': UPC-A Bar Code
'C': Code 128 Bar Code (*mode* can be 'N' = No mode, 'U' = UCC Case Mode, 'A' = Automatic Mode, 'D' = UCC/EAN Mode)
Expand All @@ -379,13 +397,14 @@ def barcode(self, barcode_type, code, height=70, orientation='N', check_digit='N
"""

# guard for only currently allowed bar codes
assert barcode_type in '23AQUCEX', "invalid barcode type"
assert barcode_type in '237AQUCEX', "invalid barcode type"

self.code += self._barcode_config(height, barcode_type, orientation, check_digit, \
print_interpretation_line, print_interpretation_line_above, magnification, errorCorrection, mask, mode)
print_interpretation_line, print_interpretation_line_above, magnification, errorCorrection, mask, mode,
columns, rows, truncate)

#write the actual code
if barcode_type in '23AUCEX':
if barcode_type in '237AUCEX':
self.code += "^FD{}".format(code)
elif barcode_type in 'Q':
self.code += "^FD{}A,{}".format(errorCorrection,code)
Expand Down Expand Up @@ -446,6 +465,13 @@ def __main__():
l.write_text('https://github.com/cod3monk/zpl')
l.endorigin()

height += 20
l.origin(22, height)
l.barcode_field_default(module_width=1/6, bar_width_ratio=2, height=5)
l.barcode(height=15, barcode_type='7', errorCorrection=5, columns=10, truncate='N',
code='This is a PDF417 barcode like the ones found on FedEx labels. It supports encoding over 1000 characters!')
l.endorigin()

height += 20
l.origin(0, height)
l.write_text('Happy Troloween!', char_height=5, char_width=4, line_width=60,
Expand Down