I need to print ZPL with dynamic content.
I Need your help. I am dynamic content , please help me.
is this word possible to print. Note the content is dynamic. ZPL Code please.
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3 Answers
1
If you want to type bold you can use this
^FO340,128^FDbold^FS ^FO339,128^FDbold^FS
Another option (External fonts usage for underline, italic and bold) http://labelary.com/docs.html
ueminiscan
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0
There is no simple way to bold or italicize text withing ZPL. The fonts the printer has are very basic and can't be changed like that.
person
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Complex font settings (italic, bold, serif ) are actually sent as compressed images to ZPL printers (you can check this with ZebraDesigner). The format is called Z64, which is based on LZ77. These two pages contain interesting code in Java to write a converter :
http://www.jcgonzalez.com/img-to-zpl-online
https://gist.github.com/trevarj/1255e5cbc08fb3f79c3f255e25989a18
...still I'm not sure whether the CRC part of the conversion will remain the same in the future, as this is probably vendor-dependent.
Here is a Python port of the first script :
import cv2
import base64
import matplotlib.pyplot as plt
import io
import numpy
blacklimit=int(50* 768/100)
compress=False
total=0
width_byte=0
mapCode = dict()
LOCAL_PATH="C://DEV//printer//zebra_debug.txt"
'''
class StringBuilder(object):
def __init__(self):
self._stringio = io.StringIO()
def __str__(self):
return self._stringio.getvalue()
def getvalue(self):
return self._stringio.getvalue()
def append(self, *objects, sep=' ', end=''):
print(*objects, sep=sep, end=end, file=self._stringio)
'''
def init_map_code():
global mapCode
mapCode[1] = "G"
mapCode[2] = "H"
mapCode[3] = "I"
mapCode[4] = "J"
mapCode[5] = "K"
mapCode[6] = "L"
mapCode[7] = "M"
mapCode[8] = "N"
mapCode[9] = "O"
mapCode[10] = "P"
mapCode[11] = "Q"
mapCode[12] = "R"
mapCode[13] = "S"
mapCode[14] = "T"
mapCode[15] = "U"
mapCode[16] = "V"
mapCode[17] = "W"
mapCode[18] = "X"
mapCode[19] = "Y"
mapCode[20] = "g"
mapCode[40] = "h"
mapCode[60] = "i"
mapCode[80] = "j"
mapCode[100] = "k"
mapCode[120] = "l"
mapCode[140] = "m"
mapCode[160] = "n"
mapCode[180] = "o"
mapCode[200] = "p"
mapCode[220] = "q"
mapCode[240] = "r"
mapCode[260] = "s"
mapCode[280] = "t"
mapCode[300] = "u"
mapCode[320] = "v"
mapCode[340] = "w"
mapCode[360] = "x"
mapCode[380] = "y"
mapCode[400] = "z"
def numberToBase(n, b):
if n == 0:
return [0]
digits = []
while n:
digits.append(int(n % b))
n //= b
return digits[::-1]
def four_byte_binary(binary_str):
decimal=int(binary_str, 2)
if decimal>15:
returned=hex(decimal).upper()
returned=returned[2:]
else:
#returned=hex(decimal).upper()+"0"
returned=hex(decimal).upper()
if binary_str!="00000000":
print("cut="+returned)
returned=returned[2:]
returned="0"+returned
if binary_str!="00000000":
print("low10="+returned)
#
if binary_str!="00000000":
print(binary_str+"\t"+str(decimal)+"\t"+returned+"\t")
return returned
def createBody(img):
global blacklimit
global width_byte
global total
height, width, colmap = img.shape
print(height)
print(width)
print(colmap)
rgb = 0
index=0
aux_binary_char=['0', '0', '0', '0', '0', '0', '0', '0']
sb=[]
if(width%8>0):
width_byte=int((width/8)+1)
else:
width_byte=width/8
total=width_byte*height
print(height)
print("\n")
print(width)
print("\n")
i=0
for h in range(0, height):
for w in range(0, width):
color = img[h,w]
#print(color)
#print(w)
blue=color[0]
green=color[1]
red=color[2]
blue=blue & 0xFF
green=green & 0xFF
red=red & 0xFF
"""
blue=np.uint8(blue)
green=np.unit8(green)
red=np.unit8(red)
"""
#print(bin(blue))
auxchar='1'
total_color=red+green+blue
if(total_color> blacklimit):
#print('above_black_limit')
auxchar='0'
aux_binary_char[index]=auxchar
index=index+1
if(index==8 or w==(width-1)):
if "".join(aux_binary_char) !="00000000":
print(i)
sb.append(four_byte_binary("".join(aux_binary_char)))
i=i+1
aux_binary_char=['0', '0', '0', '0', '0', '0', '0', '0']
index=0
#print(h)
sb.append("\n")
#print(sb)
print(blacklimit)
return ''.join(sb)
def encode_hex_ascii(code):
global width_byte
global mapCode
max_linea=width_byte*2
sb_code=[]
sb_linea=[]
previous_line=1
counter=1
aux = code[0]
first_char=False
for i in range(1, len(code)):
if(first_char):
aux=code[i]
first_char=False
continue
if(code[i]=="\n"):
if(counter>= max_linea and aux=='0'):
sb_linea.append(",")
elif(counter>= max_linea and aux=='F'):
sb_linea.append("!")
elif(counter>20):
multi20=int((counter/20))*20
resto20=counter%20
sb_linea.append(mapCode[multi20])
if(resto20!=0):
sb_linea.append(mapCode[resto20] +aux)
else:
sb_linea.append(aux)
else:
sb_linea.append(mapCode[counter] +aux)
counter=1
first_char=True
if(''.join(sb_linea)==previous_line):
sb_code.append(":")
else:
sb_code.append(''.join(sb_linea))
previous_line=''.join(sb_linea)
sb_linea=[]
continue
if aux==code[i]:
counter=counter+1
else:
if counter>20:
multi20=int((counter/20))*20
resto20=counter%20
sb_linea.append(mapCode[multi20])
if resto20!=0:
sb_linea.append(mapCode[resto20] + aux)
else:
sb_linea.append(aux)
else:
sb_linea.append(mapCode[counter] + aux)
counter=1
aux=code[i]
return ''.join(sb_code)
def head_doc():
global total
global width_byte
return "^XA " + "^FO0,0^GFA,"+ str(int(total)) + ","+ str(int(total)) + "," + str(int(width_byte)) +", "
def foot_doc():
return "^FS"+ "^XZ"
def process(img):
global compress
init_map_code()
cuerpo=createBody(img)
print("CUERPO\n")
print(cuerpo)
print("\n")
if compress:
cuerpo=encode_hex_ascii(cuerpo)
print("COMPRESS\n")
print(cuerpo)
print("\n")
return head_doc() + cuerpo + foot_doc()
img = cv2.imread("C:\\Users\\ftheeten\\Pictures\\out.jpg", cv2.IMREAD_COLOR )
compress=True
blacklimit ==int(50* 768/100)
test=process(img)
file=open(LOCAL_PATH, 'w')
file.write(test)
file.close()
Franck Theeten
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