Change some optional dependencies from being optional to being mandatory
or being mandatory but behind on-by-default cmake flags. Eg: instead of
only compiling Wayland support if we find the appropriate libraries, we
always require the libraries unless the user specifies WITH_WAYLAND=OFF.
Optional libraries are hard to discover by packagers (since they don't
see an error once we add them) and create lots of possible build flavors
with a different features that can confuse users.
Summary:
Windows no longer needs a separate plugin, and X11 and Wayland are now in
separate files instead of having lots of ifdefs.
Test Plan: Tested on X11, Wayland and Windows.
Reviewers: #kde_connect, apol, nicolasfella
Reviewed By: #kde_connect, apol, nicolasfella
Subscribers: apol, nicolasfella
Tags: #kde_connect
Differential Revision: https://phabricator.kde.org/D11692
KWayland provides a FakeInput interface which KWin as a compositor
supports. This can be used to fake input events on Wayland. As it's
a KWin specific interface it won't work with other Wayland compositors.
If the compositor does not support the required interface, the
module just doesn't do anything. Support in the implementation is
completely optional.
Adding fake input events circumvents the Wayland security model.
Because of that the interface is designed in a way that the security
decision can be done by the compositor and can be delegated to the
user.
On first input event kdeconnect tries to "authenticate" with the
compositor. This gives the compositor the possibility to e.g. ask
the user whether it should be allowed. It's not done on startup or
of load module as that would show such a message way to early and
the user would not be able to connect it with his action on the
smartphone.
REVIEW: 124238
