[plt-scheme] black buttons in drscheme

This is now fixed.

The problem was that the button drawing relied on `set-alpha' at the
dc<%> level, but `set-alpha' works only when smoothed (i.e.,
anti-aliased) drawing is supported. It doesn't work, for example, in
X11 without Cairo. We changed the drawing routine to detect when
smoothed drawing is unavailable and to use a different drawing strategy
in that case.

Matthew

At Wed, 7 May 2008 15:40:44 +0100, "Stephen De Gabrielle" wrote:
> Hi all,
> 
> has anyone experienced black buttons in drscheme?
> 
> The buttons are not all black the little image seems ok for the
> lady-bug ,the running man seems blury(alpha?) and teh stop signs white
> octagon  is missing.
> 
> I've attached a screenshot as an example.
> 
> I'm building from source on a Xandros Linux(a debian deriv), I got
> black buttons about a week ago.
> I've disabled xrender as a configure option and loaded the png and
> jpeg libraries (from the debian packages) to no effect.
> 
> I'm just hoping that someone else has experienced this, or has an idea
> about what is going on?
> 
> Cheers,
> 
> Stephen
> 
> --
> Stephen De Gabrielle
> s.degabrielle at ucl.ac.uk
> Telephone +44 (0)20 7679 5242 (x45242)
> Mobile 079 851 890 45
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> 
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