Compute correct position of drag button press on X11
Summary:
While dimensions of QScreen are in logical pixels, the origin is not.
As result, computed native coordinates are incorrect on high dpi.
Test Plan:
Drag a window by empty area on a multiple monitor setup (with High DPI),
neither cursor nor windows should "jump."
Reviewers: Plasma, davidedmundson
Reviewed By: Plasma, davidedmundson
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D20182