Hi Hazen: I am addressing this post mostly to you as the principal cairo device driver maintainer. It might also be of concern to the developers of plbuf.c as well, but I don't think plbuf.c is the issue, see below.
Recently I have been testing the -save option for example 1. This uses plreplot to make a colour PostScript copy of the example using -dev psc. This functionality only works for devices where plbuf_write = 1 (which is why plbuf.c might be involved, although I don't think it is, see below). For example, after revision 10588 which set pls->plbuf_write = 1 for qtwidget, examples/c/x01c -save test.psc -dev qtwidget created a good-looking copy of example 1 in test.psc, and similarly for -dev xwin and -dev wxwidgets. However, if I try the same thing with -dev xcairo, all the text is missing from the PostScript copy created internally by the example using the psc device. Note, this was an issue before revision 10589 (which instead of setting plbuf_write = 1 for all cairo devices sets it only for the xcairo device which I think is the correct thing to do) and after revision 10589 as well. If you temporarily change example 1 so the plot is saved using the pscairo device rather than than psc, then this save mechanism and therefore plreplot works for -dev xcairo. So from that evidence I conclude that plbuf.c is working fine to save the text in all cases, but somehow the -dev xcairo text processing interferes with the -dev psc text processing in the different stream. Let me know if you think you can deal with this issue in the short term or whether you would prefer me to put this issue in the bug tracker for longer term consideration. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
