Bug#561923: grub-pc: Automatically convert background images to suitable format

[Alexander Kurtz]

Am Montag, den 21.12.2009, 10:00 +0000 schrieb Paul Saunders:
> I am attaching a patch that uses convert (from ImageMagick) to allow the
> use of arbitrary images as the grub background. In particular it resizes
> the image to the desired GRUB_GFXMODE and sets the pixel depth to 8-bit.
> Although this would necessitate an extra dependency, it seems to me it
> would also fix bugs #560978, #495282 and  #539963

I really like the idea and would like to include something like this in
the new version of /etc/grub.d/05_debian_theme. This would make the
background handling even more flexible and could simplify the code. 

Colin, what do you think of this? If you don't want to add the
dependency, we could still add the code and make it fail gracefully if
ImageMagick isn't installed.

Best regards

Alexander Kurtz
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