[Product-Developers] [AT/ImageField] Rescaling images with a fixed width

Andreas Jung lists at zopyx.com
Fri Jan 23 11:16:33 UTC 2009

Hash: SHA1

Thanks for the pointers but I decided to implement the resizing
code on top of PIL.Image.resize() with at_post_edit_script() instead of
depending on some internal ImageField madness :->


On 23.01.2009 10:41 Uhr, Andreas Jung wrote:
> Hi there,
> I have the following usecase:
>  - an ATImage derived image class contains a field "imageClass"
>  - for a certain value of 'imageClass' the uploaded original image
>    must be scaled up or down to _fixed width of 500px_ (independent
>    of the image ratio) for all cases.
> I came to the point where I am able to set the 'max_size' and
> 'original_size' parameter for individual instances of my image class
> implementation. Scaling an image down to 500px width works so far
> for image where width>height but not if height>width. Also upscaling
> does not seem to be support by rescaleOriginal() implementation
> of ImageField. Any hint if this problem can be solved with a custom
> parameters for 'max_size' and/or 'original_size'

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