roprinters-devel — Development list

[Roprinters-devel] IPP Device Driver

[Dave L. <pri...@dl...>]

Hi,

I have a working driver module. Would anyone like to test it? It's
probably not 32 bit safe I'm afraid.

Cheers,
Dave

Re: [Roprinters-devel] Implementing IPP support

[David M. <rop...@il...>]

In message <106...@th...>
          Dave Lambley <pri...@dl...> wrote:


> I'd like to add IPP (Internet Printing Protocol) support to Printers+.

Sounds like a great idea :)

> I have been looking through the source files, but I'm not sure where
> to start. Can anyone point me at the right bits of code to do this?
>
> I need to have the full size of the print job, so I need to force
> "background" support? How should I do this?
> 
> After that, I'd modify the spooler to send the output over the network,
> rather than to a device.

The way the other network printing types implement this is as a filing
system, and the connection window effectively just provides a neater
interface to print-to-file. These are (unless anyone knows any
different):

Net: Econet
NFS, LanManFS: Omniclient
LanMan98: WSS's LanMan98
JetDirect, LPR: RComp's network printer drivers

Hopefully this will remind me to update the web page with some of this
information. So for a LanManFS printer for example, the print-to-file is
basically set to something like OmniPrint#LanMan;<options>:

I think this is probably the best way to implement a new remote printer
type because of the flexibility it gives you (access from other
versions of Printers, and even other applications), but unfortunately
none of those are open source to give you ideas on how to implement
a new filing system module.

There are some details in the PRM sections 4 and 5, in particular the
"Introduction to filing systems", "NetPrint", and "System devices"
sections that might help.

There's also LPRSpool from
http://www.jaffasoft.co.uk/download/files/lprspool.zip which you use by
setting Printers to print to a file in Pipe: which LPRSpool can then
read from and send on to the remote printer. This does have source, but
it's WimpWorks source which I don't know much about. 

You could implement IPP support inside Printers+ but I would think you
probably wouldn't want to do large amounts of network coding in BASIC
anyway (at least I don't think I would).

> I would also need to extend the "Connection" window, and have somewhere
> to store the IPP configuration.

This shouldn't be a problem, and I can certainly point you towards the
right bits of the source code if you do implement IPP as a filing system
module. The code to handle the other network printing types can be
replicated fairly easily, and stores the configurations.
 
> Could I also modify the "queue" window to make it query the IPP server
> to give information on jobs after they have been uploading?

That sounds a bit more complicated but I guess it's possible. Again I'd
suggest at least initially this might work better as a separate
application.

That's just my opinion of how I'd implement it anyway, but I'm certainly
open to discussion on it.

D

-- 
David Marston
rop...@il...
Printers+ for RISC OS: http://roprinters.sourceforge.net/

Re: [Roprinters-devel] Implementing IPP support

[Jeremy C B N. <Je...@om...>]

In article <106...@th...>,
   Dave Lambley <pri...@dl...> wrote:
> I'd like to add IPP (Internet Printing Protocol) support to
> Printers+. I have been looking through the source files, but I'm not
> sure where to start.

Is this diferent from the lpr support that other people have added,
albeitly separately?

-- 
Jeremy C B Nicoll - my opinions are my own.

[Roprinters-devel] Implementing IPP support

[Dave L. <pri...@dl...>]

Hi,

I'd like to add IPP (Internet Printing Protocol) support to Printers+. I
have been looking through the source files, but I'm not sure where to
start. Can anyone point me at the right bits of code to do this?

I need to have the full size of the print job, so I need to force
"background" support? How should I do this?

After that, I'd modify the spooler to send the output over the network,
rather than to a device.

I would also need to extend the "Connection" window, and have somewhere
to store the IPP configuration.

Could I also modify the "queue" window to make it query the IPP server
to give information on jobs after they have been uploading?

Can Printers be extended to do these things?

Cheers,
Dave

[Roprinters-devel] Printers+ 1.91 released

[David M. <rop...@il...>]

[Copied to development list for information, future announcements will be to
the announce list only]

Printers+ 1.91 release
======================

Printers+ 1.91 has now been released, and is available for download
from http://roprinters.sourceforge.net/

Printers+ 1.91 is the first release of open source Printers+ to be
made through SourceForge.net. Printers+ 1.91 is functionally identical
to the previous version 1.90b4 released through RISC OS Select, but is
being released as a common starting point for open source Printers+
development.

Sourceforge.net
---------------

Printers+ is hosted as an open source project on SourceForge.net.
SourceForge.net provides the ability to track feature requests and bug
reports for hosted projects, and the Printers+ project will be making
use of these features.

To report a bug in Printers+ visit:
http://sourceforge.net/tracker/?group_id=71687&atid=538622

To request a new feature for Printers+ visit:
http://sourceforge.net/tracker/?group_id=71687&atid=538625

Mailing lists
-------------

The Printers+ project has three mailing lists. The announce list is
a very low volume list for announcement of new releases of Printers+
only. The users list is for discussion of the use of Printers+.

The new development list is for discussion of the development of
open source Printers+.

To subscribe to any of these lists please visit the project mailing
list page at:
http://sourceforge.net/mail/?group_id=71687

-- 
David Marston
rop...@il...