Re: load Image() from embedded python

I'm using Python 2.7.6 on windows. I tried both cStringIO and StringIO 
with no luck. But the combo of ImageReader and getBytesIO works great. 
Thank you.

Michael


On 2/9/2014 4:12 AM, Robin Becker wrote:
> Not sure if this is with python 2.7 or 3.3, but there are differences
> in the way StringIO works in the two dialects. In practice I think for
> any kind of image object we ought to be reading in binary so StringIO
> is off the table. Can you try passing an ImageReader instance to the
> canvas. That would look like
>
>
> from reportlab.lib.utils import ImageReader, getBytesIO
>
> .......
>
>
> canvas.drawImage(ImageReader(getBytesIO('embedded stuff')))
>
>
>
> ......
>
> ImageReader is acceptable to drawImage & a bytes io object is
> acceptable to ImageReader (I think).
>
> On 8 February 2014 17:54, Michael Hipp <[email protected]> wrote:
>> As noted in my previous reply I was able to make this work great with the
>> flowable Image().
>>
>> Now I'm doing something like this, and getting the exception below. Any
>> suggestions?
>>
>>      canvas.drawImage(StringIO('embedded stuff'), ...)
>>
>> I would be really helpful to be able to embed these things.
>>
>> I'm using reportlab 3.0a1 BTW.
>>
>> Thanks,
>> Michael
>>
>>    File
>> "c:\dev\virtenvs\oldworldblack\lib\site-packages\reportlab\pdfgen\canvas.py",
>> line 920, in drawImage
>>      imgObj = pdfdoc.PDFImageXObject(name, image, mask=mask)
>>    File
>> "c:\dev\virtenvs\oldworldblack\lib\site-packages\reportlab\pdfbase\pdfdoc.py",
>> line 2086, in __init__
>>      ext = os.path.splitext(source)[1].lower()
>>    File "c:\dev\virtenvs\oldworldblack\lib\ntpath.py", line 190, in splitext
>>      return genericpath._splitext(p, sep, altsep, extsep)
>>    File "c:\dev\virtenvs\oldworldblack\lib\genericpath.py", line 91, in
>> _splitext
>>      sepIndex = p.rfind(sep)
>> AttributeError: StringIO instance has no attribute 'rfind'
>>
>>
>>
>>
>> On 1/29/2014 1:47 AM, Andy Robinson wrote:
>>>
>>> I think that everywhere we accept a filename, we also accept a
>>> file-like object.  So you could store it as some kind of escaped
>>> binary string in your source code, then wrap it in a StringIO and pass
>>> that to the platypus Image.
>>>
>>> I'm not in a programming environment now but if this is not clear we
>>> can post a code snippet later in the day...
>>>
>>> - Andy
>>>
>>>
>>>
>>> On 29 January 2014 00:50, Michael Hipp <[email protected]> wrote:
>>>>
>>>> In the reportlab.platypus Image flowable, is it possible to load the
>>>> image
>>>> from an image embedded as binary in the python code? The only api for
>>>> Image
>>>> seems to depend on a filename.
>>>>
>>>> I'd prefer not to have to lug around things like logos and icons with my
>>>> program.
>>>>
>>>> Thanks,
>>>> Michael
>>>> _______________________________________________
>>>> reportlab-users mailing list
>>>> [email protected]
>>>> http://two.pairlist.net/mailman/listinfo/reportlab-users
>>>
>>>
>>>
>>
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>
>
>