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S.R.Pardá
linux at qbox.es
Sat Aug 12 08:29:29 EDT 2006
Ok, Thank You Very Much, Graham. That looks a way to the solution. You understand me, and like you pointed, the idea is to print content on the fly. And now you will understand I want to use HTML because at this moment I would prefer not to get inside on another Page Description language to generate the documents. I know HTML itsn't WYSIWYG but in a Server Side printing environment I can have it controled, and I can change later to another document format if needed with more time to develop it. So I will try html2ps first before pdf2ps. I will investigate further. I wonder if mod_python can get the own page as the onthefly source after send the request. Or if the file can be something like: "http://server/printableBill.psp?num=0248;" Thank You again. S.R.Parda El sáb, 12-08-2006 a las 21:47 +1000, Graham Dumpleton escribió: > On 12/08/2006, at 9:39 PM, Graham Dumpleton wrote: > > > Please keep discussion on the mailing list. I have forwarded your > > response back there. > > > > On 12/08/2006, at 9:18 PM, S.R.Pardá wrote: > > > >> Ok, I will try to explain it better. > >> > >> I have now in the server a PDF (or HTML) that I can open with eVince. > >> > >> How I send that document to a network printer from ModPython's > >> interpreted code when client user press PRINT button in one page. > >> > >> So server receive a HTTP request for: > >> > >> http://server/printBill.psp?doc=bill0248.pdf > >> > >> So I want to code a printBill.psp page that prints like: > >> <% > >> PrinterName = "HP-4100" #Thats the name of the printer for bills > >> DocumentToPrint = form('doc') #The Document the user want to print > >> SendToPrint (PrinterName, DocumentToPrint) > >> %> > >> > >> Now , how I code SendToPrint. > >> > >> Do I need to use some library ? > >> Can I execute evince from shell indicating some parameter to print > >> on a > >> specified printer? > > If the PDF were a file stored in the file system, in UNIX the command > to print it would be: > > pdf2ps somefile.pdf | lp -s -d HP-4100 > > In other words, convert to postscript and use 'lp' to spool to desired > printer. The '-s' option (may depend on platform), just tells lp to not > output status string about job number it was queued at. > > This command could be invoked from Python using 'os.system()'. > Alternatively, if PDF content generated by Python code on the fly, > the you might want to use the 'popen2' module to create the command > as a pipe you can send data into in which case the command would > just be: > > pdf2ps | lp -s -d HP-4100 > > If you can't find pdf2ps, then get a copy of 'ghostscript' package for > your system and install that. > > Graham > > >> The principal problem is not be able to print from client if we can't > >> select the printer from the server , because user can't select every > >> time a printer for every kind of document he prints. > >> > >> > >> > >> El sáb, 12-08-2006 a las 20:24 +1000, Graham Dumpleton escribió: > >>> On 12/08/2006, at 7:22 PM, S.R.Pardá wrote: > >>> > >>>> Hi all, > >>>> > >>>> I'm considering solutions to print HTML pages served by some > >>>> Linux OS > >>>> with Apache and Mod_Python. > >>>> > >>>> I am looking a server side approach, that is: I want the server > >>>> send the > >>>> HTML output when required to one of varios network printers > >>>> installed in > >>>> the server. > >>>> > >>>> I have not idea about linux printing , I would need an orientation > >>>> about > >>>> what have to know. > >>>> Are any python module for printing? > >>>> Must I execute some shell command to print inside python? > >>>> Must I generate a PostScript document from the HTML document to > >>>> print > >>>> it ? > >>>> > >>>> > >>>> More details: > >>>> > >>>> Web Clients (Windows probably) will print some documents > >>>> received. But > >>>> the documents have diferent formats (size, orientation, duplex > >>>> option) > >>>> so it's desiderable the automatic printer/configuration selection > >>>> ( that > >>>> is: witout a printer selection dialog in IE or Firefox and the > >>>> default > >>>> printer isn't valid for all documents) > >>>> > >>>> As I found in client window Javascript it's not capable of select > >>>> printers in client side, I have to investigate with VBscript, and > >>>> another possibility would be install an ActiveX control to do that > >>>> (restricting possible client options). > >>>> > >>>> So I think the server approach, would be better because it > >>>> eliminates > >>>> printer management in client, and assures the same HTML render > >>>> configuration for all printings, independent of client > >>>> configuration / > >>>> browser. > >>> > >>> Not sure I really understand what you are trying to do, but if your > >>> target > >>> is a printer, not sure why you would want to try and render to HTML > >>> and then print that. Your better option would be target PDF as your > >>> display format and then print the PDF file. > >>> > >>> Suggest you have a look at the following sites: > >>> > >>> http://www.openreport.org > >>> http://www.reportlab.org > >>> http://www.reportlab.com > >>> > >>> With these solutions, one option is to describe documents as RML. > >>> This > >>> can be filled out with data from some source and then translated > >>> into > >>> PDF > >>> or HTML. Thus HTML becomes a screen representation but PDF what > >>> is used for printing. > >>> > >>> If you already have the document generation side worked out, and are > >>> only really after solution for printing, not sure how Apache and > >>> mod_python > >>> comes in to it all. > >>> > >>> Anyway, hope the sites I reference might be of some help. > >>> > >>> Graham > >>> > >>> > > > > > > _______________________________________________ > > Mod_python mailing list > > Mod_python at modpython.org > > http://mailman.modpython.org/mailman/listinfo/mod_python >
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