Hi, This is something we can look at after the summer break. Could you create a bug report in the mean time with the relevant details?
Morten > On 4 Jul 2018, at 16:31, Alexandru Croitor <alexandru.croi...@qt.io> wrote: > > The team working on Qt For Python has already encountered an issue with CA > layer backed views. > > The current workaround to get tests and integrations succeed is to disable > the feature via the currently available environment variable, but I guess > 10.14 forces us to use layers, which means we will have a problem in the near > future. > > The issue is that none of the views / widgets get drawn (-[QNSView > displayLayer] is not called). > > Unfortunately I was not able to come up with a small reproducible example, > but I do have a big reproducible example which involves Qt For Python and the > official Python interpreter. > > I've spoken to Simon and Tor Arne, and investigated multiple avenues but I > couldn't find what's the problem. > > The best information so far is that it happens because the python executable > was built with minimum deployment target 10.6, and Qt is built with a higher > one. If I use a Python installer that was built against 10.9, the issue > disappears. > > I think we will need to either find a different workaround or a proper fix > and for that we will need your (macOS QPA team) help. > >> On 4. Jul 2018, at 16:19, Morten Sørvig <morten.sor...@qt.io> wrote: >> >> Hi all, >> >> macOS 10.14 is now in (public) beta and we've had some time to test Qt on it. >> >> This time there are (at least) two changes which will impact Qt applications: >> Core Animation layer backed NSViews/QWindows and dark mode. We’re aiming to >> have improvements in place for Qt 5.12. See below for specific details. >> >> In the mean time it’s possible to continue developing and shipping >> applications >> for macOS 10.14, also using current Qt versions. This can be done by linking >> against the 10.13 (or earlier) SDK, which will opt out of dark mode support >> and layer backing. It is the syslibroot argument on the linker line which >> determines the SDK version for this purpose, for example: >> >> >> —Wl,-syslibroot,/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk >> >> >> Dark appearance: In theory, applications should pick up the dark appearance >> via >> the style and palette. In practice, they may not due to incomplete/buggy >> QPalette >> and QMacStyle implementations, or hardcoded colors in Qt or the application. >> >> The current state of the patches for dev/5.12 is that custom-styled >> applications >> can work well in dark mode, for example Qt Creator with a dark theme. >> >> The plan is to disable dark mode support by default in Qt, at least until >> QMacStyle is fixed. This means that applications will start up using standard >> Aqua theme/colors, also when the desktop is configured for dark mode. >> >> The application has the final call here, and can opt in or out by setting the >> NSRequiresAquaSystemAppearance key in the Info.plist file. For example: >> >> <key>NSRequiresAquaSystemAppearance</key> >> <false/> >> >> will indicate that the app _does_ support dark mode, and Qt will get out >> of the way and not apply its disable. Setting it to true will insulate the >> app against any changes in the Qt default. >> >> >> Layer backing: We are seeing some issues here, in particular related to >> multithreaded OpenGL (as used by the default threaded Qt Quick render loop). >> We are sorting out if this is something that can or should be fixed in Qt. >> >> So far we’ve not found a way to opt out of layer backing when on the 10.14 >> SDK, so linking against an earlier SDK looks to be the only opt-out option >> here. >> >> >> If you want to file a bug for something that is not working, then please >> make sure it has “Mojave” somewhere in the title and we’ll sort it into >> the correct in pile. >> >> >> Thanks for reading! >> Morten >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest > _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
