Re: [Plone-developers] Summer of Code ideas

[Jens W. K. <je...@bl...>]

Am Sun, 15 Mar 2009 17:54:42 +0900 schrieb Martin Aspeli:

> Hedley Roos wrote:
>>>>   * Image sprites and resizing middleware
>>>>
>>>> For trunk, it'd be nice to experiment with moving thumbnail/image
>>>> resizing out to thumbnails. The middleware should scan for <img />
>>>> tags with a particular class, e.g. "resized" , then create thumbnails
>>>> (cached in some on-disk directory, which we'd need to 'mount' so that
>>>> it was accessible via URI) on the fly based on the height/width
>>>> attributes, and rewrite the <img /> tag to point to the newly resized
>>>> image. This would allow us to provide high-quality, on-the-fly
>>>> resizing of any image, not just AT image fields.
>>> Or more simply: it should just intercept requests for images, extract
>>> filter parameters from the query string and do the resizing. That is a
>>> lot simpler than parsing and modifying the outgoing html.
>>>
>>>
>> This is pretty low hanging fruit right? Handling on the fly resizing
>> for ATImage is simple since we already override bobo_traverse and the
>> desired scale is in the URL. Martin's suggestion is interesting but I'm
>> wondering if I'll ever use it.
> 
> That bobo_traverse override is an ugly hack, for one thing, and only
> works with AT types that have this same override method. I'd like
> something that works with any image, regardless of where it comes from.

archetypes.fieldtraverser does the same in a nice generic way.

Jensens
-- 
Jens W. Klein - Klein & Partner KEG - BlueDynamics Alliance