[reportlab-users] TrueType fonts and barcode widgets

[J. R. Carroll]

Quickly looking at this, could it be that you are trying to embed a font
that does not exists? (your stack shows it's happening when you save the
pdf)...

Perhaps the line that reads:
*
*


> *italic='Courier New Italicc'*,  (extra c?)



Not sure if that's a typo, but you might want to do some debugging to make
sure all your fonts are available and are usable in a separate reportlab
instance.  If that doesn't fix the problem (and no one else responds with
the solution) let me know.

-J

----


J. R. Carroll
Independent Researcher through Hurtz Labs
Research Methods, Test Development, and Statistics
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Email: jrcarroll at jrcresearch.net
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          jrc.csus at gmail.com
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On Tue, Feb 26, 2013 at 11:23 PM, Markos Kapes <mkapes at gmail.com> wrote:


> When using True Type fonts as prescribed in the documentation, I get a

> value error if I use a unicode font with a barcode widget if I don't also

> set the font of the barcode widget to the same font. For the time being,

> it's not a big deal as it still gets the job done, but I'm curious what I

> might be doing wrong. The code works fine with builtin 'Courier' but if I

> try a system unicode font, it chokes unless I make sure barcode has the

> same font.

>

> Thanks,

> --Markos Kapes

>

> The code relevant code is as follows, followed by the stack trace.

>     rl_config.warnOnMissingFontGlyphs = 1

>     registerFont(TTFont('Courier New', 'Courier New.ttf'))

>     registerFont(TTFont('Courier New Bold', 'Courier New Bold.ttf'))

>     registerFont(TTFont('Courier New Italic', 'Courier New Italic.ttf'))

>     registerFont(TTFont('Courier New Bold Italic', 'Courier New Bold

> Italic.ttf'))

>     registerFontFamily('Courier New', normal='Courier New', bold='Courier

> New Bold', italic='Courier New Italicc', boldItalic='Courier New Bold

> Italic')

>

>     font = 'Courier New'

>     font_size = 9

>     doc_width = 2.4*inch

>     doc_height = 2*inch

>     margin = 0.1*inch

>     tmpfile = tempfile.NamedTemporaryFile(delete=False)

>

>     canvas1 = canvas.Canvas(tmpfile, (doc_width, doc_height))

>     #change coordinates so origin is now at left bottom margin corner

>     canvas1.translate(margin, margin)

>     text_object = canvas1.beginText()

>     text_object.setFont(font, font_size)

>     text_object.setTextOrigin(0, column_height-margin)

>     text_object.textOut( title)

>     text_object.moveCursor(120, 0)

>     text_object.textLine(price)

>      canvas1.drawText(text_object)

>     #create barcode and draw it at the origin.

>     barcode1=barcode.createBarcodeDrawing('EAN13', value=isbn,

> validate=True, width= column_width, height=1.4*inch, humanReadable=True,

> fontName=font)

>     renderPDF.draw(barcode1, canvas1, 0,0)

>     canvas1.showPage()

>     canvas1.save()

>

>

> ---------------------------------------------------------------------------

> ValueError                                Traceback (most recent call last)

> /Library/Python/2.7/site-packages/ipython-0.14.dev-py2.7.egg/IPython/utils/py3compat.pyc

> in execfile(fname, *where)

>     177             else:

>     178                 filename = fname

> --> 179             __builtin__.execfile(filename, *where)

>

> /Users/mkapes/Documents/Developer/git_repos/infoshopkeeper/specialOrderLabel.py

> in <module>()

>      92     canvas1.save()

>      93

> ---> 94 print_special_order_label(isbn=isbn, booktitle=booktitle,

> author=author, price=price, customer_name=customer_name,

> customer_phone=customer_phone, customer_email=customer_email)

>

> /Users/mkapes/Documents/Developer/git_repos/infoshopkeeper/specialOrderLabel.py

> in print_special_order_label(isbn, booktitle, author, price, customer_name,

> customer_phone, customer_email)

>      90     canvas1.drawText(text_object)

>      91     canvas1.showPage()

> ---> 92     canvas1.save()

>      93

>      94 print_special_order_label(isbn=isbn, booktitle=booktitle,

> author=author, price=price, customer_name=customer_name,

> customer_phone=customer_phone, customer_email=customer_email)

>

> /Library/Python/2.7/site-packages/reportlab/pdfgen/canvas.pyc in save(self)

>    1192            After this operation the canvas must not be used

> further."""

>    1193         if len(self._code): self.showPage()

> -> 1194         self._doc.SaveToFile(self._filename, self)

>    1195

>    1196     def getpdfdata(self):

>

> /Library/Python/2.7/site-packages/reportlab/pdfbase/pdfdoc.pyc in

> SaveToFile(self, filename, canvas)

>     234             filename = utf8str(filename)

>     235             f = open(filename, "wb")

> --> 236         f.write(self.GetPDFData(canvas))

>     237         if myfile:

>     238             f.close()

>

> /Library/Python/2.7/site-packages/reportlab/pdfbase/pdfdoc.pyc in

> GetPDFData(self, canvas)

>     246         # realize delayed fonts

>     247         for fnt in self.delayedFonts:

> --> 248             fnt.addObjects(self)

>     249         # add info stuff to signature

>     250         self.info.invariant = self.invariant

>

> /Library/Python/2.7/site-packages/reportlab/pdfbase/ttfonts.pyc in

> addObjects(self, doc)

>    1124             if doc.compression:

>    1125                 cmapStream.filters = [pdfdoc.PDFZCompress]

> -> 1126             pdfFont.ToUnicode = doc.Reference(cmapStream,

> 'toUnicodeCMap:' + baseFontName)

>    1127

>    1128             pdfFont.FontDescriptor =

> self.face.addSubsetObjects(doc, baseFontName, subset)

>

> /Library/Python/2.7/site-packages/reportlab/pdfbase/pdfdoc.pyc in

> Reference(self, object, name, InstanceType)

>     534             other = idToObject[name]

>     535             if other!=object:

> --> 536                 raise ValueError, "redefining named object:

> "+repr(name)

>     537             return PDFObjectReference(name)

>     538         if iob:

>

> ValueError: redefining named object: 'toUnicodeCMap:AAAAAA+CourierNewPSMT'

> >

> /Library/Python/2.7/site-packages/reportlab/pdfbase/pdfdoc.py(536)Reference()

>     535             if other!=object:

> --> 536                 raise ValueError, "redefining named object:

> "+repr(name)

>     537             return PDFObjectReference(name)

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