On 22 May 2018 at 02:03, Jason H <jh...@gmx.com> wrote: > Going through the list of Qt GUI classes, there are several that I think > should be moved: > QImage > QStandardItem*
It's GUI stuff, what's wrong with that? > Matrix and Vector classes Definitely, I should be able to do 2D/3D/4D transforms without Qt GUI. But aren't they part of QtCore already? > QPdfWriter If only Qt could deal with modern PDF to start with, gui or not... > QPen, QBrush, etc. Yep! > QText* QTextDocument et al. > QValidator et al. That's GUI stuff, definitely. These things don't make sense out of GUI context. It's pushing a bit far, but as i get pushed a bit far i start to get where you're coming from .... > QFont* (where applicable. QFontDatabase, QRawFont) How fonts can be separated from GUI? Good luck with that! Honestly, try to build Qt on a Linux headless server without installing an X server.... Unix epic fail! > Various geometrics (QPolygon, QRegion) Unfortunately, look at all the "qt private" stuff behind these, it's quite ugly. May I add the mighty QPainterPath? A very promising piece of code, unless you realised it's tailored to graphical/painting operation. Contains hard coded CPU calculation precision limit, approximation of all sort, circles as polygon, dirty bezier approximation/optimisation, .... QGraphicsScene/View attempted to introduced qreal instead of int, what did go wrong? .... Premature optimisation that wasn't actually premature back at that time... Who to blame? Anyone running on a processor w/o floating point registers nowaday? But again, how dare do we ask for more? Qt is a graphical toolkit, not a scientific spline/polygon/geometry library. Maybe look at boost::geometry instead.... Well, watch your CPU burning templates and meta-programming.... And failing like shit! Understandable compiler errors are utopia, opaque meta-programming logic brings opaque meta-programming errors. I once tried to contribute to https://www.cgal.org/ but gave up b/c filling a bug report wasn't even human friendly. (PS: I had fun with their stuff, try it!) To summarise: - Qt is a graphical toolkit - Some Qt classes shouldn't be part of QtGui - We have to accept that Qt doesn't give a bullock about mathematical exactness (Graphical rendering is key) My 2 cents. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
