On 2018-12-12 15:24-0000 António Rodrigues Tomé wrote:
Hi Alan, now that 5.14 is out I would like to be more useful in solving the qt5 driver problem. However I do not complete understand the driver system to be of big help.However for me I found a work arround that seems to work quite well. I send you 4 files, output of x01 example using qt driver, png and pdf) the ones with Realease in name were created by the actual qt driver version 5.14 that I constructed with the command cmake -DCMAKE_INSTALL_PREFIX=/home/artome/plplot/PLPLOTNEW/ -DDEFAULT_NO_CAIRO_DEVICES=ON -DDEFAULT_NO_QT_DEVICES=OFF DENABLE_cxx=ON -DPL_DOUBLE=ON -DPLPLOT_USE_QT5=ON DEFAULT_NO_BINDINGS=ON ../ >& cmake.out
Hi António: Please keep this discussion thread on list. I think it would be better style (and also I think -DBUILD_TEST=ON is essential) to use instead cmake -DCMAKE_INSTALL_PREFIX=/home/artome/plplot/PLPLOTNEW/ -DBUILD_TEST=ON -DDEFAULT_NO_BINDINGS=ON -DENABLE_cxx=ON -DENABLE_qt=ON -DPLPLOT_USE_QT5=ON -DDEFAULT_NO_CAIRO_DEVICES:BOOL=ON ../ >& cmake.out I just tried all those options here (except for your -DCMAKE_INSTALL_PREFIX), and they worked fine, i.e., eliminated all bindings other than cxx and qt, dropped the cairo devices, and included all qt devices (which happens by default if -DENABLE_qt=ON). What is your exact platform (I think it might still be opensuse, but what version?) and what are the results of the "uname -a" command on that platform? Also, what is the version of Qt5 that you are using? The reason these details are important is I cannot replicate the text alignment issues you demonstrated with pdfqt and pngqt results for example one on your platform. My platform is Debian Buster (with the Qt5 5.11.2 suite of libraries) installed on AMD64 hardware (Ryzen 7 1700). I demonstrated that I cannot replicate your badly aligned results by configuring cmake in the way I described above and then executing the following commands: # Build the prerequisites for the specific examples below make -j16 test_c_pngqt make -j16 test_c_pdfqt # Build two specific examples examples/c/x01c -dev pngqt -o test.pngqt examples/c/x01c -dev pdfqt -o test.pdfqt I have attached those two result files so you can see for yourself that there are no text alignment issues. Also your suggested changes to plqt.cpp likely conflate two issues. (i) alignment issues caused by your platform and not PLplot, and (ii) the size of the resulting characters (which I would prefer to put off discussing until later). So to check those are two separate issues, what happens if you restore plqt.cpp to its original form except for this one line change: PLDLLIMPEXP_QT_DATA( int ) vectorize = 0; ==> PLDLLIMPEXP_QT_DATA( int ) vectorize = 1; ? I am pretty sure that is the equivalent of the first part of your change where you are forcing the vectorize part of the code to be executed. If that one-line change is all you need to bypass your Qt5 platform issues, then I would be willing to test that simple change here to see if it also works on my platform. But the vectorize = 1 code path has not been tested by anybody but you over the years and is just likely a workaround for your Qt5 platform issue so I likely won't push that one-line change in general. Also you do appear to be having text alignment troubles consistently over the years with your (opensuse?) Qt5 platforms so perhaps it is time to try other Qt5 platforms? For example, you could build the upstream version of Qt5 yourself. The very early versions of Qt5 did have character alignment difficulties in that upstream version, but my experiments showed they solved the alignment issues important to PLplot by 5.3.x so you will likely find the latest upstream Qt5 also does not have text alignment issues. And if that is the case, then that experiment should be the basis of a bug report to your distribution. Of course, if that bug report gets no response another possibility is to try Debian (which I know works well now with Qt5) some Debian derivative such as Ubuntu or Mint or some other rpm-based distribution such as Fedora. Good luck, and let me know how it goes. Alan __________________________ Alan W. Irwin 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 __________________________
test.pdfqt
Description: pdfqt properly aligned result
test.pngqt
Description: pngqt properly aligned result
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