Re: [Gimp-user] Re: PNG binary transparency

2005-09-14 Thread Michael Schumacher
michael chang wrote:

 This sounds like something that should be only created if it's set by
 the user -- e.g. a save option.  Although then it'd have to be
 specified every time, which might be annoying.  In that case, you'd
 still see the colour that acts transparent in GIMP - just not when
 it's actually edited.  That said, that might be inconvienent for those
 who use GIMP as an image viewer, and confuddle users of GAP.

IMO it could be a reasonable default to set tRNS to the currently
selected background color when saving with keep tranparent pixels'
color unset. This would copy the behaviour for the bKGD chunk.


HTH,
Michael

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Re: [Gimp-user] Re: PNG binary transparency

2005-09-14 Thread Jeffrey Brent McBeth
On Wed, Sep 14, 2005 at 08:00:01PM +0200, Michael Schumacher wrote:
 
 IMO it could be a reasonable default to set tRNS to the currently
 selected background color when saving with keep tranparent pixels'
 color unset. This would copy the behaviour for the bKGD chunk.

Except that would make any pixels with the background color transparent in
any app that correctly parses tRNS.  I seriously doubt there is a good
automatic solution.

Jeff

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Computer Science is as much about computers as astronomy is about telescopes
-- Edsger Wybe Dijkstra (1930-2002)



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Re: [Gimp-user] pick white point with script-fu

2005-09-14 Thread Boris Schaefer

Sven Neumann wrote:

pick white point is just a shortcut in the UI. You can do the same
in your script. Just pick a color and setup the levels parameters
according to the picked color values.


Thanks, that solves my problem.

Regards,
Boris
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