[reportlab-users] load Image() from embedded python

[Robin Becker]

Yes I thing you can pass either an ImageReader or a filename, but not
a file like object into drawImage.

On 9 February 2014 15:10, Michael Hipp <michael at redmule.com> wrote:

> 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 <michael at redmule.com> 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 <michael at redmule.com> 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

>>>>> reportlab-users at lists2.reportlab.com

>>>>> http://two.pairlist.net/mailman/listinfo/reportlab-users

>>>>

>>>>

>>>>

>>>>

>>>

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>>

>>

>>

>>

>

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-- 
Robin Becker