Re: a couple more stupid x related questions

On Sun, Feb 22, 2004 at 03:48:22PM +0100, Keith Packard wrote:
> 
> Around 0 o'clock on Feb 21, Jaymz Julian wrote:
> 
> >  Of course, when I try and create a second picture from the same window,
> > the xserver returns an error, which is rather unhandy(tm).
> 
> That shouldn't cause an error; perhaps there's something odd in how you 
> create the second picture?

indeed, i deleted what i had and started again from the stock composite
manager, and it all started working - i don't know exactly what I did that
was odd, but, well, it was very odd, I guess :);

> > Having looked stupid, we hit problem #2.  Is there a simple way that already
> > exists to have damage make the change boxes it generates slightly larger than
> > what is required?
> 
> You could take the region, copy it and union in four translated versions.

This won't actually work correctly for a case where the region is smaller 
than xsize x ysize pixels - it will leave rather unhandy holes.

> Alternatively, you could expose a 'grow region' primitive in XFIXES.  I 
> believe the Mac and Windows APIs have examples of how this should be 
> specified; I'd look at the Mac version first.

this is looking like what I'll end up doing, although ideally I'd like to
find a way to achieve this without the application having to know what it's
doing, this may be an unrealistic fantasy :)

	-- jj


-- 
--
Jaymz Julian - Coder, Visionary, Fat Ass.
"Hannibal is a serial killer. He only likes to kill and eat people. 
 Very few people have `I want to be killed and eaten' on their cards, 
 so Hannibal is out of a job." - http://cards.sf.net