On 30/04/14 19:23, Keith Packard wrote:
Michael Thayer <[email protected]> writes:
On 22/04/14 07:00, Keith Packard wrote:
Michael Thayer <[email protected]> writes:
set_cursor_position() may need to be able to fail and have the server fall
back to a software cursor in at least the situation in which we are running
on virtual hardware and using the host cursor as a hardware cursor for the
guest but cannot change its position.
Frankly, the usual "solution" for nested or virtual X servers is to just
ignore the cursor position assignment.
I would still very much like to have the change if it considered
acceptable, and can submit an fixed patch like the one for
set_cursor_argb() and friends to force a driver build break. Of course
if you tell me it is something that you would rather not have in I can
leave it at that.
I don't see any value in allowing pointer warping to fail and setting a
software cursor in response. If the next input event from the user isn't
going to happen at the warped position, then you should be setting the
cursor position before sending the next input event anyways.
The alternative is for you to simply always use a software cursor, which
would be easy to manage.
The cases I had in mind were pointer confining and input events from a
different input device, both of which cause the position of the cursor
sprite to differ from that of that reported by the input device for more
than a negligible time. No matter though, I can solve this as a
fall-back with a client application which monitors the positions and
tells the driver to disable the hardware cursor when needed.
Thanks and regards,
Michael
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