Generate data label with barcode(html or jpg or pdf) and print it (now barcode does not generate)

Question

Trying to solve a problem linked to bar-codes in html. What i need to do is to create a template of label with bar-code in it and send to printer. I choosed to use html language to create that template with input data. I could get that html and it looks like this in picture. Howerer, then i tried to print that html i got that label but without bar-code printed. So i tried to convert it to pdf and send to printer, but whenever i tried to convert to pdf, i get in converted pdf that label without bar-codes. Tried to use some different libraries (pdfkit,pdfcrowd,PyQt4.QtGui), none saved pdf with barcode. Attaching script:

for index, row in output_ramco.iterrows():

    print row['PARTNOMLT_OUT']
    htmlas = '''

            
            
            
            
            
            
            
                

                 

                 



                
                  
                    PN:
                    '''+str(row['PARTNOMLT_OUT'])+'''
                    QTY:
                    '''+str(row['KIEKIS'])+'''
                  
                  
                    '''+str(row['PARTDESCMLT_OUT'])+'''
                  
                  
                    LOT/SN#:
                    '''+str(row['LOTSN'])+'''
                  
                  
                    Stock Status:
                    '''+row['STATUSMLT_OUT']+'''
                  
                  
                    Shelf Life Expiry Dt.:
                    '''+row['EXP_DATE']+'''
                  
                  
                    Certificate Type/No:
                    '''+str(row['CERTAI'])+'''
                  
                  
                    Source Document #
                    '''+str(row['SOURCE_DOC'])+'''
                  
                  
                    Storage Area:
                    '''+str(row['STORAGE'])+'''
                  
                  
                    Owner # :
                    '''+row['OWNERIS']+'''
                  

                  
                    11
                  

                  
                    11
                  
                  
                    EIA Issue 2
                    Generated On:
                    '''+str(row['GENERATED'])+'''
                  
                                
                
            

    '''

try:
    with open(dir_files+'html_test.html', 'w') as file:
        file.write(htmlas.encode('UTF-8'))
except Exception, e:
    log_error()


######1st
#from PyQt4.QtGui import QTextDocument, QPrinter, QApplication
#import sys
#app = QApplication(sys.argv)
#doc = QTextDocument()
#location = "html_test.html"
#html = open(location).read()
#doc.setHtml(html)
#printer = QPrinter()
#printer.setOutputFileName("foo.pdf")
#printer.setOutputFormat(QPrinter.PdfFormat)
#printer.setPageSize(QPrinter.A4);
#printer.setPageMargins (15,15,15,15,QPrinter.Millimeter);
#doc.print_(printer)


######2nd
#import pdfcrowd
#client = pdfcrowd.Client("orangutangas", "pwd")
#output_file = open('htmlas.pdf', 'wb')
#client.convertHtml(htmlas, output_file)
#output_file.close()


#########3rd
#path_wkthmltopdf = r'C:\Program Files (x86)\wkhtmltopdf\bin\wkhtmltopdf.exe'
#config = pdfkit.configuration(wkhtmltopdf=path_wkthmltopdf)
#pdfkit.from_string(htmlas, 'out.pdf',configuration=config)

So how can i translate html or make a jpg/pdf where printer can read this info and print properly with barcode thjat label?

Lorenzo Simonassi · Accepted Answer

ReportLab is very good in this case. I am not sure where I found out this code. But it really helped me.

from reportlab.graphics.barcode import code39, code128, code93
from reportlab.graphics.barcode import eanbc, qr, usps
from reportlab.graphics.shapes import Drawing
from reportlab.lib.pagesizes import letter
from reportlab.lib.units import mm
from reportlab.pdfgen import canvas
from reportlab.graphics import renderPDF

def createBarCodes():
    """
    Create barcode examples and embed in a PDF
    """
    c = canvas.Canvas("barcodes.pdf", pagesize=letter)

    barcode_value = "1234567890"

    barcode39 = code39.Extended39(barcode_value)
    barcode39Std = code39.Standard39(barcode_value, barHeight=20, stop=1)

    # code93 also has an Extended and MultiWidth version
    barcode93 = code93.Standard93(barcode_value)

    barcode128 = code128.Code128(barcode_value)
    # the multiwidth barcode appears to be broken
    #barcode128Multi = code128.MultiWidthBarcode(barcode_value)

    barcode_usps = usps.POSTNET("50158-9999")

    codes = [barcode39, barcode39Std, barcode93, barcode128, barcode_usps]

    x = 1 * mm
    y = 285 * mm
    x1 = 6.4 * mm

    for code in codes:
        code.drawOn(c, x, y)
        y = y - 15 * mm

    # draw the eanbc8 code
    barcode_eanbc8 = eanbc.Ean8BarcodeWidget(barcode_value)
    bounds = barcode_eanbc8.getBounds()
    width = bounds[2] - bounds[0]
    height = bounds[3] - bounds[1]
    d = Drawing(50, 10)
    d.add(barcode_eanbc8)
    renderPDF.draw(d, c, 15, 555)

    # draw the eanbc13 code
    barcode_eanbc13 = eanbc.Ean13BarcodeWidget(barcode_value)
    bounds = barcode_eanbc13.getBounds()
    width = bounds[2] - bounds[0]
    height = bounds[3] - bounds[1]
    d = Drawing(50, 10)
    d.add(barcode_eanbc13)
    renderPDF.draw(d, c, 15, 465)

    # draw a QR code
    qr_code = qr.QrCodeWidget('www.mousevspython.com')
    bounds = qr_code.getBounds()
    width = bounds[2] - bounds[0]
    height = bounds[3] - bounds[1]
    d = Drawing(45, 45, transform=[45./width,0,0,45./height,0,0])
    d.add(qr_code)
    renderPDF.draw(d, c, 15, 405)

    c.save()

if __name__ == "__main__":
    createBarCodes()

Generate data label with barcode(html or jpg or pdf) and print it (now barcode does not generate)

Answers (2)

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