[reportlab-users] Problem with pdfform (textField)

[Arnaud Fontaine]

Hello,

I'm trying to generate a PDF document containing Tables where some cells
are PDF form (textField only). Here is the code (based on some code from
xhtml2pdf project):

from reportlab.platypus import Table, SimpleDocTemplate, Flowable
from reportlab.pdfbase import pdfform

class PDFFormTextField(Flowable):
    def __init__(self, name, width=10, height=10):
        self.name = name
        self.width = width
        self.height = height

    def wrap(self, *args):
        return (self.width, self.height)

    def draw(self):
        self.canv.saveState()

        pdfform.textFieldRelative(self.canv, self.name, 0, 0, self.width,
self.height, value='foo')
        self.canv.restoreState()

doc = SimpleDocTemplate("test2.pdf")
t = Table([['col1', PDFFormTextField('123333')]])
doc.build([t])

However, this code produces an invalid document with the form object
itself instead of the generated form:

% 'Annot.NUMBER1': class PDFPattern
4 0 obj
<reportlab.pdfbase.pdfpattern.PDFPattern instance at 0x85c040c>
[...]
% 'R6': class PDFCatalog
6 0 obj
% Document Root
<< /AcroForm <reportlab.pdfbase.pdfform.AcroForm instance at 0x85c030c>

On a given element, format() function (pdfbase/pdfdoc.py) calls the
format() method of the element only if element object has an attribute
__PDFObject__. However, this is not the case for PDFPattern and Acroform
classes. I have attached to this email a short patch which works fine for
me. Hope that's ok.

Regards,
Arnaud Fontaine
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