Sven Neumann wrote:
> Hi,
> On Thu, 2008-12-25 at 13:49 +0100, Martin Nordholts wrote
>> But what about making layers not be cropped by default and only crop
>> them if Current layer only is checked in the crop tool options? That's
>> also a one-line patch and is compatible with our future plans to make
>> layer sizes automanaged and GIMP generally more non-destructive.
> This change would be quite problematic. An image with the layers cropped
> to the image boundaries is in some ways different to an image where the
> layers extend the image boundaries. It takes up more memory and
> processing it uses more CPU cycles. Your proposed change makes it
> difficult to trim an image in order to save memory and processing time
> for the following image processing steps. Of course it's a nice
> side-effect that you can tweak the crop rectangle later if you kept all
> layers at their full size. But as long as GIMP applies all processing to
> the full layers, even if only a small rectangle of them is shown, this
> is problematic.
> The proposed change will also cause problems with file plug-ins. Many
> save plug-ins that only deal with single layer images don't look at the
> layer offsets and image size. They will save the full drawable, which is
> probably not what the user expects after having cropped the image.


That is a good argument against making the proposed change and a couple
of points were made that I didn't think about. I will not go ahead with
my proposed change at this point.

- Martin

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