Fix build errors from deprecated QByteArray::count(), QVariant::type(), QEventPoint::pos()

[andersk]

Description

• Fixes MozillaVPN is not compatible with Qt 6.8 #9966.

In file included from /build/source/build/src/mozillavpn_autogen/UM7GZO45JR/../../../../src/platforms/linux/daemon/dnsutilslinux.h:12,
                 from /build/source/build/src/mozillavpn_autogen/UM7GZO45JR/../../../../src/platforms/linux/daemon/dbusservice.h:13,
                 from /build/source/build/src/mozillavpn_autogen/UM7GZO45JR/moc_dbusservice.cpp:9,
                 from /build/source/build/src/mozillavpn_autogen/mocs_compilation.cpp:88:
/build/source/build/src/mozillavpn_autogen/UM7GZO45JR/../../../../src/platforms/linux/daemon/dbustypeslinux.h: In function 'const QDBusArgument& operator>>(const QDBusArgument&, DnsResolver&)':
/build/source/build/src/mozillavpn_autogen/UM7GZO45JR/../../../../src/platforms/linux/daemon/dbustypeslinux.h:49:26: error: 'qsizetype QByteArray::count() const' is deprecated: Use size() or length() instead. [-Werror=deprecated-declarations]
   49 |     } else if (data.count() >= 4) {
      |                ~~~~~~~~~~^~
In file included from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qstringview.h:10,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qchar.h:660,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qstring.h:14,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qcoreapplication.h:8,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qaccessible.h:17,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/QAccessible:1,
                 from /build/source/build/src/mozillavpn_autogen/EWIEGA46WW/../../../../src/accessiblenotification.h:8,
                 from /build/source/build/src/mozillavpn_autogen/EWIEGA46WW/moc_accessiblenotification.cpp:9,
                 from /build/source/build/src/mozillavpn_autogen/mocs_compilation.cpp:2:
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qbytearray.h:501:22: note: declared here
  501 |     inline qsizetype count() const noexcept { return size(); }
      |                      ^~~~~

/build/source/src/platforms/linux/daemon/apptracker.cpp: In member function 'void AppTracker::userCreated(uint, const QString&)':
/build/source/src/platforms/linux/daemon/apptracker.cpp:73:42: error: 'QVariant::Type QVariant::type() const' is deprecated: Use typeId() or metaType(). [-Werror=deprecated-declarations]
   73 |   if (!m_cgroupMount.isEmpty() && qv.type() == QVariant::String) {
      |                                   ~~~~~~~^~
In file included from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtDBus/qtdbusglobal.h:9,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtDBus/qdbusconnection.h:8,
                 from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtDBus/QDBusConnection:1,
                 from /build/source/src/platforms/linux/daemon/apptracker.cpp:9:
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtCore/qvariant.h:433:10: note: declared here
  433 |     Type type() const
      |          ^~~~

/build/source/src/itempicker.cpp: In member function 'QList<QQuickItem*> ItemPicker::pickItem(QMouseEvent*, QQuickItem*)':
/build/source/src/itempicker.cpp:87:57: error: 'QPoint QMouseEvent::globalPos() const' is deprecated: Use globalPosition() [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wdeprecated-declarations-Werror=deprecated-declarations8;;]
   87 |     QPointF gpos = child->mapFromGlobal(event->globalPos());
      |                                         ~~~~~~~~~~~~~~~~^~
In file included from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/QMouseEvent:1,
                 from /build/source/src/itempicker.cpp:9:
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qevent.h:224:19: note: declared here
  224 |     inline QPoint globalPos() const { return globalPosition().toPoint(); }
      |                   ^~~~~~~~~
/build/source/src/itempicker.cpp:102:59: error: 'QPoint QMouseEvent::globalPos() const' is deprecated: Use globalPosition() [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wdeprecated-declarations-Werror=deprecated-declarations8;;]
  102 |       QPointF gpos = child->mapFromGlobal(event->globalPos());
      |                                           ~~~~~~~~~~~~~~~~^~
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qevent.h:224:19: note: declared here
  224 |     inline QPoint globalPos() const { return globalPosition().toPoint(); }
      |                   ^~~~~~~~~
/build/source/src/itempicker.cpp: In member function 'QList<QQuickItem*> ItemPicker::pickItem(QTouchEvent*, QQuickItem*)':
/build/source/src/itempicker.cpp:117:25: error: 'const QList<QEventPoint>& QTouchEvent::touchPoints() const' is deprecated: Use points() [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wdeprecated-declarations-Werror=deprecated-declarations8;;]
  117 |   if (event->touchPoints().length() != 1) {
      |       ~~~~~~~~~~~~~~~~~~^~
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qevent.h:939:31: note: declared here
  939 |     const QList<QEventPoint> &touchPoints() const { return points(); }
      |                               ^~~~~~~~~~~
/build/source/src/itempicker.cpp:123:53: error: 'const QList<QEventPoint>& QTouchEvent::touchPoints() const' is deprecated: Use points() [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wdeprecated-declarations-Werror=deprecated-declarations8;;]
  123 |   QTouchEvent::TouchPoint point = event->touchPoints()[0];
      |                                   ~~~~~~~~~~~~~~~~~~^~
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qevent.h:939:31: note: declared here
  939 |     const QList<QEventPoint> &touchPoints() const { return points(); }
      |                               ^~~~~~~~~~~
/build/source/src/itempicker.cpp:124:26: error: 'QPointF QEventPoint::pos() const' is deprecated: Use position() [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wdeprecated-declarations-Werror=deprecated-declarations8;;]
  124 |   QPointF pos = point.pos();
      |                 ~~~~~~~~~^~
In file included from /nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qevent.h:20:
/nix/store/bgfalfi93kbn8j1wfwz0x0dnk1wx9wdp-qtbase-6.8.0/include/QtGui/qeventpoint.h:87:13: note: declared here
   87 |     QPointF pos() const { return position(); }
      |             ^~~

Reference

https://code.qt.io/cgit/qt/qtbase.git/commit?id=65859635830b1476ce5c3e22f86438a08d4894cf
https://code.qt.io/cgit/qt/qtbase.git/commit/?id=11bad6109606794091adc3b8a14070ac09707f45
https://code.qt.io/cgit/qt/qtbase.git/commit/?id=24e52c10deedbaef833c0e2c3ee7bee03eacc4f5
https://code.qt.io/cgit/qt/qtbase.git/commit/?id=2692237bb1b0c0f50b7cc5d920eb8ab065063d47

Checklist

• My code follows the style guidelines for this project
• I have not added any packages that contain high risk or unknown licenses (GPL, LGPL, MPL, etc. consult with DevOps if in question)
• I have performed a self review of my own code
• I have commented my code PARTICULARLY in hard to understand areas
• I have added thorough tests where needed

[XavierCLL]

Hi @andersk thanks for your patches, I can successfully build the MozillaVPN, the CLI is working however the UI is not working, at least in Archlinux (+wayland), so I think there are more things to update (or an issue in your patches?):

'mozillavpn' terminated by signal SIGSEGV (Address boundary error)
Thread 1 "mozillavpn" received signal SIGSEGV, Segmentation fault.
0x00007ffff5dea6b4 in QWindow::mapToGlobal(QPointF const&) const () from /usr/lib/libQt6Gui.so.6

backtrace.txt

(note that I'm not a mozilla developer btw)

[strseb]

Thank you!!