Summary:
Currently code base of kwin can be viewed as two pieces. One is very
ancient, and the other one is more modern, which uses new C++ features.
The main problem with the ancient code is that it was written before
C++11 era. So, no override or final keywords, lambdas, etc.
Quite recently, KDE compiler settings were changed to show a warning if
a virtual method has missing override keyword. As you might have already
guessed, this fired back at us because of that ancient code. We had
about 500 new compiler warnings.
A "solution" was proposed to that problem - disable -Wno-suggest-override
and the other similar warning for clang. It's hard to call a solution
because those warnings are disabled not only for the old code, but also
for new. This is not what we want!
The main argument for not actually fixing the problem was that git
history will be screwed as well because of human factor. While good git
history is a very important thing, we should not go crazy about it and
block every change that somehow alters git history. git blame allows to
specify starting revision for a reason.
The other argument (human factor) can be easily solved by using tools
such as clang-tidy. clang-tidy is a clang-based linter for C++. It can
be used for various things, e.g. fixing coding style(e.g. add missing
braces to if statements, readability-braces-around-statements check),
or in our case add missing override keywords.
Test Plan: Compiles.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: davidedmundson, apol, romangg, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D22371
Removes the functionality for Plasma::Wallpapers as that doesn't exist
any more and is not needed by the Screenedges KCM. The KCM still has
way too many functionality, but that can stay for the moment as it's
probably best to reimplement the monitor and the actions in QML.
The ScreenPreviewWidget doesn't make much sense any more for the general
useage as it's not QML based and thus not suited for any usage in Plasma.
This means that features like previewing the Plasma wallpaper cannot
work any more.
The Widget is only used in a few KCMs (KDM, Screensavers, Screenedges).
Currently we expect that KDM and legacy X Screensavers won't make it into
the next release, it makes sense to just move the widget to screenedges
where it's still useful.
This change has been discussed with notmart.
