Qt 6 management

[Arthoni]

Context

cf https://doc.qt.io/qt-6/supported-platforms.html

Qt 5.15 : End of support may 2023

• Ubuntu 18.04, Ubuntu 20.04
• Mac OS 10, 11, 12
• Windows 7, 8, 10, 11

Qt 6.5 (LTS, until at least 2025)

• Ubuntu 22.04
• Mac OS 11, 12, 13
• Windows 10, 11

Porting from Qt 5 to Qt 6

Content:

• [x] Check warnings Clazy
• [x] Check yaml content

Compilability:

• [x] Debian (inc Ubuntu 22.04)
• [x] Fedora
• [x] Centos
• [x] MacOS
• [x] Windows

Runability:

• [x] Debian (inc Ubuntu 22.04)
• [x] Fedora
• [x] Centos
• [ ] MacOS
• [x] Windows

Systems packaging:

• [x] Debian (inc Ubuntu 22.04)
• [x] Fedora
• [x] Centos
• [ ] MacOS
• [ ] Windows

[Arthoni]

Migrate progressively:

QtWidgets : https://doc.qt.io/qt-6/widgets-changes-qt6.html

• Kernel classes
  • [x] The QWidget class
  • [x] QDesktopWidget and QApplication::desktop()
  • [x] QAction, QActionGroup
• Widgets
  • [x] The QAbstractButton class
  • [x] The QComboBox class
  • [x] The QDateTimeEdit class
• ItemViews
  • [x] The QAbstractItemView class
• Styling Classes and related APIs
  • [x] Style sheet changes
• Utility Classes
  • [x] QUndoCommand, QUndoStack, and QUndoGroup

QtCore : https://doc.qt.io/qt-6/qtcore-changes-qt6.html

• [x] QVector, QList : identical, care: no copy anymore
• [x] QProcess (https://doc.qt.io/qt-6/qtcore-changes-qt6.html#the-qprocess-class)
• [x] QVariant
• [x] QRegExp
• [x] QEvent

Workflow

• Select a category of changes
• Identify the impacted code
• Check warnings and Clazy yaml for corresponding files
• Implement code conversion