Square Thumbnail Patch

Square thumbnails are sexy. And functional. A square thumbnail stacks cleanly alongside its square siblings.

I've written a patch that allows image.module to generate square thumbnails from unsquare originals. It does this by scaling the original image down to thumbnail size and then cropping it into a square. It handles both landscape and portrait oriented images and uses the default thumbnail image size that already exists in image.module. This patch adds a configuration option to configure the region of the image to be used when cropping rectangular images into squares (the left/top of the image, the middle of the image, or the right/bottom of the image).

There are still some features that need to be added (such as editing the thumbnail when previewing an image upload). I can add those if there is sufficient interest.