Require Qt 5.12 API

[dg0yt]

No description provided.

[dl3sdo]

I assume that workarounds for QT < 5.12 could be removed as well, e.g. in transform_t.cpp:

#if QT_VERSION == 0x050B01
// Qt 5.11.1 has a regression in QPointF::operator==.
// References:
// https://bugreports.qt.io/browse/QTBUG-69368
// https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903237
// https://github.com/OpenOrienteering/mapper/issues/1116
#  define QTBUG_69368_QUIRK
#endif

[dg0yt]

Yes, there can be more cleanup. But it can be done in different PRs.

FTR I just fixed the problem with the app not starting with Qt 5.15 for Android. There is still a glitch with the full screen mode being shifted by the size of the camera notch.

[dg0yt]

More importantly, it is 0x050c00, not 0x051200 🤦

[dg0yt]

Okay, CI here is happy, and it also build for Linux, Windows (MSVC), Android, MacOS (inc. arm64). So it can be merged with rebase soon.