[Zope-CMF] Information and Questions on CMFExternalFile

[Carl Rendell]

Finally got around to playing with CMFOptions - specifically CMFExtFile 
and CMFExtImage.

For the most part everything went together fine once I had the patch 
from Tres.. Thanks Tres!

However, I'm having a couple of issues with CMFExtImage that I've been 
unable to isolate:

1. Image Size for jpeg - The CMF implementation uses the same code as 
OFS.Image to provide image width and height for the image tag, but with 
and hight for jpeg images are not rendered - all other types (gif, and 
png) render fine.

Looking at the modified ExtImage product I found that the PIL call in 
the private method '_getImageSize' had been commented out. Changing it 
back to what was in the standard (non CMFOption) version of ExtImage 
fixed this issue. It does make the product dependent upon PIL though.

2. Image Preview - I'm still working on this one, but for the moment 
I'm unable to get Preview Images generated even after modifying the 
dtml to pass the preview information. Note: the preview info has been 
omitted from the CMF version of the ExtFile dtml forms.


Questions -

For number one - is anyone having similar issues with jpeg width and 
height attributes when creating image tags via the .tag method? If so, 
was a different method employed to accomplish this (as opposed to using 
PIL)?

For number two - is anyone using the preview functionality of ExtImage, 
and if so how was this accomplished?

I'm in the process of changing the product(s) to be closer to the 
current CMF product types with page templates for forms, and python 
scripts for the edit/change functionality. I'm more than willing to 
package the whole thing up and put it out on zope.org once I've 
resolved the issues with jpeg size and preview images.

Thanks,

~C

Carl E. Rendell
Solution43
Information Distribution and Process Consulting
cer@sol43.com
sol43.com