[xhtml2pdf] Support for transparent PNG in pisa_reportlab [Patch included]

[lasconic]

Hi,
I use pisa to generate pdf from XHTML. Some images are PNG in in RGBA.
With the 3.0 branch, I got this kind of errors
File "/usr/lib/python2.5/site-packages/reportlab/pdfbase/pdfdoc.py",
line 2101, in loadImageFromSRC
raw = im.getRGBData()
File "/usr/lib/python2.5/site-packages/pisa-3.0.32-py2.5.egg/sx/
pisa3/pisa_reportlab.py", line 313, in getRGBData
self._dataA = PmlImageReader(im.split()[3])
File "/usr/lib/python2.5/site-packages/PIL/Image.py", line 1497, in
split
if self.im.bands == 1:
AttributeError: 'NoneType' object has no attribute 'bands'

After changing line 314 in pisa_reportlab.py to the following it's
working as expected:
if mode == 'RGBA':
if Image.VERSION.startswith('1.1.7'): im.load()
self._dataA = ImageReader(im.split()[3])
im = im.convert('RGB')

Regards,
lasconic

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[David Bolton]

Thank you lasconic.

I filed the bug in the issue tracker
http://code.google.com/p/xhtml2pdf/issues/detail?id=65

David