[cairo] [RFC] Add device_extents api

[Jeff Muizelaar]

On Tue, Feb 03, 2009 at 02:46:20PM -0500, Behdad Esfahbod wrote:
> Jeff Muizelaar wrote:
> > On Tue, Feb 03, 2009 at 12:25:48PM -0500, Behdad Esfahbod wrote:
> >> Jeff,
> >>
> >> The current implementation is broken indeed, and we plan to fix it. 
> > 
> > How do we plan on doing this?  I don't know if we can just change the
> > current implementation as that will likely break all the applications
> > that currently use it. For example, if, like moonlight, you switch to an
> > identity matrix before getting the extents and expect to get the device
> > extents we can't just start returning the user space extents because
> > they'll be too small.
> 
> Huh?  If matrix is identity, the broken and ideal extents are the same.
> Either I'm missing something huge or you're talking about something else.
> This problem can be fixed and doesn't need new API.

Yep, when the matrix is identity they're the same, but what should you
get if the matrix isn't identity?

-Jeff