Path: utzoo!utgpu!watserv1!watmath!att!dptg!ulysses!andante!princeton!udel!wuarchive!cs.utexas.edu!sun-barr!newstop!exodus!snowking!tomj
From: tomj@snowking.Eng.Sun.COM (Tom Jacobs)
Newsgroups: comp.windows.x
Subject: Re: xview -> NeWs
Message-ID: <1990Nov20.140751@snowking.Eng.Sun.COM>
Date: 20 Nov 90 22:07:51 GMT
References: <1990Nov19.054303.26516@balr.com>
Sender: news@exodus.Eng.Sun.COM
Reply-To: tomj@snowking.Eng.Sun.COM (Tom Jacobs)
Organization: Sun Microsystems, Inc.
Lines: 50

In article <1990Nov19.054303.26516@balr.com>, wrv@balr.com (Bill Vogel) writes:
|> I am using the OpenWindows Developers Guide to create a graphical
|> user interface, but I want to use postscript (NeWS) to do the
|> graphics work on the main drawing canvas.  How do you do it?
|> The devguide lets you select postscript as the imaging model for
|> the canvas, but I can't find any doc. on how to do this.  I know
|> how to open a connection to the NeWS side, but I don't know how
|> to send down the canvas id.
|> 
|> The repaint procedure (generated by devguide) looks like this:
|> void
|> repaint_graphics(pscanvas, newstoken, display, xid, rects)
|>         PScanvas        pscanvas;
|>         NeWStoken       newstoken;
|>         Display         *display;
|>         Window          xid;
|>         Xv_xrectlist    *rects;
|> {
|>         gmain_main_window_objects       *ip = (gmain_main_window_objects
|> *) xv_get(pscanvas, XV_KEY_DATA, INSTANCE);
|>         
|>         xv_set(pscanvas, PSCANVAS_CLIPRECTS, rects);
|>         pscanvas_flip();
|>         
|>         fprintf(stderr, "gmain: repaint_graphics\n");
|> }
|> 
|> I can't find any documentation on pscanvas_flip() which is really a cps
|> macro defined in pscan_ps.h.  There seem to be many useful calls
|> here, but there's no documentation.  Also, the canvas is created
|> as a PSCANVAS object, which I also can't find any documentation on,
|> although I've looked through the Devguide manual, the Vol 7 O'Reilly
|> manual, the openwindows Version 2: converting.... manual, and NeWS
|> manual.  The only place I haven't looked is the OpenLook Toolkit
|> Intrinsics manual.
|> 
|> Any help is much appreciated!
|> 
|> Bill Vogel

Apparently the PostScript (tm) online manual describing the XVPS extention
as accidently left off the OpenWindows V2 tapes... so I've placed a copy 
of the document on expo.lcs.mit.edu:/contrib/xvps.ps

  52 -rw-rw-rw-  1 ftp         52722 Nov 20 16:59 xvps.ps

---
Tom Jacobs				ARPA: tomj@Eng.Sun.com
Windows & Graphics Software		UUCP: sun!tomj
Sun Microsystems, Inc.