when the window gets moved, position the shellsurface immediately
rather than in an event: otherwise it's too late and having a moment
in which the geometry doesn't correspond with the actual surface
geometry, makes the panelcontroller window to stutter and tremble
while dragged around with wayland
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graesslin davidedmundson - Group Reviewers
Plasma
dragging panel controller around on wayland is more deterministic,
tough it's kinda slow, while dragging it with the touchscreen instead
of a mouse or touchpad is as fast as expected, this may be worth
further investigation (a kwin issue?)
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What I don't like about it is that KWin will get and react on two events with one having invalid coordinates. We get an event for the change of x and at that point y might be invalid. KWin will position the window there and that can result in mess (e.g. all windows get resized because the maximize area changes).
Otherwise it's similar to what KWin does for it's own windows, though KWin doesn't create panels which is a huge difference.
So I would prefer a solution which only creates one setPosition event.
This seems outdated. It also doesn't seem to be an issue?
Possibly fixed by us having the extra roundtrip with the XDG shell configure