[cairo] Re: device offsets handling and push/pop group support patches

Carl Worth cworth at cworth.org
Wed Jan 4 13:22:23 PST 2006

On Fri, 23 Dec 2005 20:01:33 +0100, Vladimir Vukicevic wrote:
> Updated patches; device x/y scale are now handled, so the PS surface
> is happy now with non-72dpi resolutions.  However, the PS surface is
> still not happy with device offsets -- I haven't yet tried to follow
> through the meta surface/image surface/etc., and may need some help in
> doing so.  push_group/pop_group are thus broken for ps surfaces.

I'll be taking a look at the effects of the device-offset patch on the
meta-surface and friends.

Let's start by getting the testing code committed to CVS first. That
is quite separable from the rest, and I'm always happy to see testing
in place before a bunch of code that shakes things up.

First, I'd like to see the device-offset testing happening without
anyone having to remember to set an environment variable and re-run
the test suite. How about we just run every test twice, once with a
device offset and once without?

Second, this patch adds a bit of an argument explosion through the
buffer_diff functions. Let's drop the new offsets from those, and
handle all of this with just the extra stride parameters.


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