ImageField resize and maintain aspect ratio?

[sphildreth]

Using this syntax:

class ThumbnailImage(EmbeddedDocument):
    element = ImageField(size=(200, 250, True), thumbnail_size=(50, 60, True))

What I would like is the ability to re-size the image to a maximum of 250px high and set the thumbnail size to maximum 60pixels high but for the re-sizing that occurs to maintain the aspect ratio.

Thoughts?

[MRigal]

Not implemented for now, but you could submit a PullRequest with this feature, it would be a useful improvement