** Changed in: mir
Status: Fix Committed => Fix Released
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Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1639749
Title:
When pointer motion crosses window borders SurfaceInputDispatcher
injected events increase accumulated relative motion
Status in Mir:
Fix Released
Status in mir package in Ubuntu:
Fix Released
Bug description:
SurfaceInputDispatcher keeps track of input event targets - for
historic reason those are called guesture owners - when it detects
that the receiver of a pointer event is a different window it will
send enter events to the new window and exit events to the old window.
Those events contain the same attributes as the original pointer
event. After sending the enter event the original motion event is also
dispatched.
Now if the new window accumulates the pointer events (like the nested
server) to track a cursor position this tracking will now add the
relative motion of the original event twice.
We could decide to not send the original motion event after having
provided the enter event. But that might not work for cases where the
original event was a pointer button up/down event. Since we would have
to emit that state change too. So that leaves us with nullifying the
relative motion event in one case, or ignoring relative motion in
enter exit events in our own cursor position tracker..
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