"Professional CMake" book suggest the following:
"Targets should build successfully with or without compiler support for precompiled headers. It
should be considered an optimization, not a requirement. In particular, do not explicitly include a
precompile header (e.g. stdafx.h) in the source code, let CMake force-include an automatically
generated precompile header on the compiler command line instead. This is more portable across
the major compilers and is likely to be easier to maintain. It will also avoid warnings being
generated from certain code checking tools like iwyu (include what you use)."
Therefore, removed the "#include <PreCompiled.h>" from sources, also
there is no need for the "#ifdef _PreComp_" anymore
This adds isNullOrEmpty string helper that cheks if string is... well
null or empty. It is done to improve readability of the code and better
express intent.
* QString::indexOf() is now marked as [[nodiscard]]
* QApplication::fontMetrics() is deprecated, use the constructor of QFontMetricsF
* fix -Wunused-result
* fix -Wunused-but-set-variable
Related #6097
Qt ignores shortcut of actions in invisible toolbar, but not for actions
in a hidden menu action of menu bar, which is likely a Qt bug. The
desired behavior should be that of toolbar actions, so that actions
belong to different workbenches can have the same shortcut without
conflict.
This commit works around this inconsistency by ensuring only the active
actions are added in menu bar. In addition, all active actions will be
added to a zero sized child widget of the main window, which ensures the
shortcuts of these actions being active regardless whether the action is
in toolbar or menu bar, visible or not.
Support longest key sequence match with user defined delay (configurable
through 'Customize -> Keyboard -> Key sequence delay').
Support user defined priority to resolve shortcut conflict through
'Customize -> Keyboard')
Add 'All' category in 'Customize -> Keyboard' to list all command and
showing their shortcuts
Unify macro command shortcut setting (BaseApp/Preferences/Shortcut).
