Re: [Paps-discuss] Question about scaling in paps

[Akira T. <at...@gc...>]

>>>>> On Fri, 3 Nov 2006 12:11:47 +0200,
>>>>> "DG" == "Dov Grobgeld" <dov...@gm...> wrote:

DG> On 11/3/06, Akira TAGOH <at...@gc...> wrote:
DG> Regarding CUPS, I'm not very familiar with how it works, but I am sure
DG> that you can create a script that works as the which then calls an
DG> unmodified version of paps. That might even be better as that may
DG> provide a standard way of changing defaults (by modifying the scripts
DG> default parameter's file.

Maybe. but I'd prefer to patch it out so that a filter
programs may needs to call CUPS APIs for various reasons,
which means it might not be dealt on a shell script.

>> However specifying a font and a font size may be still good
>> feature for paps since paps doesn't support the direct
>> printing or just works as a frontend filter program, because
>> it won't causes wasting their papers directly. they can just
>> try out before getting the real printing.  but CUPS filters
>> aren't supposed to do so since it has to be a backend filter
>> program.

DG> Sorry. I didn't follow this. You can of course change the font size in
DG> the font_desc option. Is this what you meant?

Well, no. erm, of course I could hardcode a font name and a
font size for default though, but noone can do it as an
option -- I meant it would be helpful as long as users uses
paps as paps, but not be helpful for paps as CUPS filter
because of the reason I wrote in previous mail.  For more
details, you just use lpr command for printing and CUPS
invokes the proper filter according to their MIME
types. which means all CUPS filters isn't basically desired
to be invoked directly and they has the same command line
interface for CUPS without any exceptions, including paps as
CUPS filter, which is included in Fedora Core.  To not get
confused, FC's paps behaves CUPS filter only when it's
invoked from CUPS or as "texttopaps". otherwise it just
works as an unmodified version of paps, but anyway.
So, what options are given to CUPS filters depends on
CUPS. there are no such options to change the font nor the
font size directly right now IIRC. then I don't think
CPI/LPI isn't really used. otherwise they didn't have such
features.

>> Sounds nice. so does people need to give paps a Pango marked
>> up text, right? it would be nice if paps can highlight the
>> text automatically according to its format.

DG> There are a few ways that can be done:

DG> 1. Modify highlight to output pango markup and then invoke highlight
DG> as a subprocess under paps.

DG> 2. Like 1 but let some new additional external program first call
DG> highlight and then paps.

DG> 3. Let paps call highlight and have it generate XML output which is
DG> then parsed and turned into pango markup.

DG> 4. Like 3 but let an external program tie it together.

DG> In any case, there is no reason to reinvent the wheel of GNU
DG> highlight. I would probably start with option 4 and a perl program to
DG> tie things together.

Ok, I see. I'd love it. it would be also nice to be
controllable a feature at configure as optional for those
who don't want or don't have GNU highlight.

Cheers,
--
Akira TAGOH