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

[Andreas Jung]

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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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