[Zope] Create image with PIL in Zope

[David Convent]

Bruno Miguel Silva wrote:

>Hi,
>    I have a small script that generate a image with some text, in python with 
>Python Imagin Library (PIL). 
>   The problem is, i want a security image in an html page in zope, so i 
>started to put the code in a External module, and now i have all kind of 
>problems with that script.
>  
>
for opening an image with PIL in an ExternalMethod (assuming that the 
image to load is in the ZODB), i use:

from PIL.Image import *
from cStringIO import StringIO

def processImage():
    img_to_open = ImageFolder.restrictedTraverse(ImageID)
    img = open(StringIO(str(img_to_open._data)))
    [... img processing stuff come here ...]
    final_img = StringIO()
    img.save(final_img, final_img.format)
    final_img.seek(0)
    return finalmap.getvalue()


HTH

>   When i use the "ImageFont.load('pathToFont.pil')", that causes an
>Error Type: IOError
>Error Value: cannot find glyph data file
>   i don' understand, because i have the ".pbm", and it works in command line.
>  
>
is it '.pbm' ? I oftenly use '.bmp'

>   So, then i try to do "ImageFont.load_path('font.pil')", and that causes a
>Error Type: IOError
>Error Value: cannot find font file
>   once again i couldn't understand because it works on command line, because 
>the font file is in "/usr/lib/python2.3/site-packages/pilfonts/"
>  
>
Sorry, I never worked with fonts

>   At this time, i start to dig in the sourcecode of ImageFont.py, and i found 
>that when it raises the "cannot find glyph data file", is when it try's to 
>open the ".pbm" file with Image.open(), i tried to do this to get more 
>information, and it gives a 
>Error Type: AttributeError
>Error Value: 'file' object has no attribute 'startswith'
>
>   I don't know if this makes any sense to you, .... but are there someone to 
>help me in this?
>   Do i have other alternatives to generate images with text on the fly in 
>zope?
>
>thanks in advance,
>--Bruno Silva
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-- 
David Convent