On 2016-10-12 15:06-0700 Alan W. Irwin wrote: > @Hazen and other Qt5 users here. Once I move to the latest Qt5 cmake > support methods, we will be on much less shaky ground with Qt5, but I > will still consider our Qt5 support to be experimental because there > are still text alignment issues which I have worked around with a > semiempirical displacement of text compared to the Qt4 case. See > discussion in commentary of bindings/qt_gui/plqt.cpp concerning > "Empirical Y offset". > > It's possible the issue is the default text alignment we are using for > Qt5 is not correct, and we have to do some specific library startup > for the Qt5 case to make its text alignment consistent with the Qt4 > text alignment. > > @Hazen: Would you be willing to look at this possibility?
Never mind concerning this text alignment question. I discovered overnight that I have always had access to the development version of Qt5 using Debian Jessie, but the name of the packages has changed from the Qt4 versions which is why I didn't find the Qt5 versions before this. So once I installed the relevant packages I was able to configure PLplot using -DPLPLOT_USE_QT5=ON, and build everything Qt related without issues. @Pedro: note I did not run into the issue you did concerning the Qt5 version. But maybe that is because my system version of Qt5 (5.3.2) is closer to the minimum version we currently express in the find_package commands, 5.2.0. @everybody: I immediately noticed vertical alignment issues in the qt device results for that configuration. So I removed the vertical offset we had used previously to compensate for known vertical alignment issues with early versions of Qt5 (commit c58020c), and the result was perfect vertical alignment for -dev qtwidget and -dev pdfqt, but still not svgqt. (For more details about the tests I ran concerning this, see the commit message for c58020c.) So it appears all our alignment troubles with Qt5 are in the process of disappearing as Qt5 alignment bugs are fixed, and we have now finally been able to move to a version of our code which does no vertical (or horizontal) alignment adjustments for Qt5 to attempt to compensate for alignment bugs in those libraries. So I am extremely happy with this result as we finally "get one foot on dry land". Next Qt5 steps are for me to bump the minimum Qt5 version we support to 5.3.2 (which _might_ solve Pedros problem with the Qt5 version he is using), try out pyqt5, and completely change the method used to configure Qt5 to the most modern variant possible. I suspect all target_link_libraries plain/keyword mixed signature issues will disappear with that change, and if so and also assuming pyqt5 works, then I _finally_ plan to remove the "experimental" description from the PLPLOT_USE_QT5 option, and turn on that option by default, which has been my goal for a very long time. So those interested in Qt5 should stay tuned.... 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); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); 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 __________________________ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
