Date: Sun, 8 Jul 2001 13:23:59 -0700 (PDT) From: Ian Dowse <iedowse@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/usr.sbin/moused moused.c Message-ID: <200107082024.f68KO0Z87485@freefall.freebsd.org>
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iedowse 2001/07/08 13:23:59 PDT
Modified files:
usr.sbin/moused moused.c
Log:
The state machine for 3-button emulation defers some button events
until a 20ms select(2) timeout occurs, but if there is a continuous
stream of movement events, button events can be delayed indefinitely
because the select never has to wait long enough for a timeout.
The delay and mouse event reordering that result are very noticable
and sometimes quite frustrating when dragging windows etc. in X.
Add a simple mechanism that avoids this re-ordering. While a button
event is deferred, we discard up to 3 movement events to allow for
mouse jitter. If more movement events occur, then we immediately
timeout the deferred button event and let the movement proceed.
This change only affects the 3-button emulation case.
Revision Changes Path
1.51 +30 -5 src/usr.sbin/moused/moused.c
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