Bugtraq mailing list archives
Re: Gimp: Erased sections of images print in some cases
From: Robert Bihlmeyer <robbe () orcus priv at>
Date: Wed, 30 Oct 2002 11:42:26 +0100 (CET)
Clark Mills <c.mills () auckland ac nz> writes:
http://c-mills.ctru.auckland.ac.nz/transparent.png If you view this image from Linux in Galeon 1.2.6 or Netscape/7.0 all looks fine however if you print the image from within these applications then the _erased_ section prints as if it was never erased.
Cute. pngtopnm will also uncover the "erased" area. Gimp's eraser simply modifies the alpha channel, leaving RGB channels intact. If something later sets transparency to zero (e.g. because the output device/format doesn't support it), the original data appears again. Something to keep in mind.
I let the Gimp people know this but they replied considering it a feature not a bug which could be the case in some/most circumstances, Bug #97167.
Perhaps it should be an option to the eraser to clear RGB as well. FWIW, my Gimp (1.2.3) has ">Image>Alpha>Clear Alpha..." which will do that for the whole layer/image. It is a standard gimp-perl plugin, apparently. -- Robbe
Current thread:
- Gimp: Erased sections of images print in some cases Clark Mills (Oct 29)
- Re: Gimp: Erased sections of images print in some cases Robert Bihlmeyer (Oct 30)
- Re: Gimp: Erased sections of images print in some cases Earl Hood (Oct 31)