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

[Espen Moe-Nilssen]

Adding a new PIL size might help you doing this.

Lets say you add another size, 200px wide and 800px height, then this  
size would always scale to 200px wide.
I have only done this by adding the size to PIL/plone itself, which  
is probably not the perfect approach...
(=there is a file that holds the PIL sizes, and you can add another  
size to this)




Den 23. jan. 2009 kl. 10.41 skrev 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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