[haiku-development] Re: GSoC Project - Continue the CUPS port
- From: "Ithamar R. Adema" <ithamar.adema@xxxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Tue, 06 Apr 2010 09:52:20 +0200
Axel Dörfler wrote:
Then bring it on! :-)
If we get CUPS, I don't think keeping backwards compatibility is
important at all, BTW.
However, I'm not really familiar with the current architecture, so I
probably don't see the improvements a new one would give us :-)
Well, the short description is as follows:
The print_server is currently only aware of some global C functions in
transport/printer addons which makes keeping data around between calls,
and just general life span of data a bit problematic. This is done due
to R5 compatibility, in Dano Be already fixed most of that by having a
proper C++ hierarchy for printer drivers (Generic printer driver class,
bitmap printer driver class, and vector printer driver class).
Most printer addons are currently using shared code which tries to
implement a similar model as Dano did, but it has grown organicly and
should not be at that level. Since we don't seem to have much
out-of-tree printer drivers (that are useful) anyway, it would be fairly
easy to pull that up to a higher level and make print_server aware of
that model.
I think this would help a lot getting the ghostscript backends to work,
but is not a requirement. Again, we don't really want CUPS, we want the
printer drivers from Ghostscript and the printer specifications from
foomatic, CUPS is just the glue (equal to our current print_server and
transport addons, only slightly more advanced features like network
printer sharing and such).
If anyone has any strong opinions about the printing architecture,
please speak up to. Don't want to be doing a monologue here :)
Ithamar.
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