void
considerLocStillEvent()
{ if ( !loc_still_posted )
{ unsigned long now = mclock();
if ( now - host_last_time < (unsigned long)loc_still_time )
{ DEBUG(NAME_locStill, Cprintf("TimeDiff = %d (ignored)\n", now - host_last_time));
return;
}
if ( !pceMTTryLock(LOCK_PCE) )
return;
if ( instanceOfObject(last_window, ClassWindow) &&
!onFlag(last_window, F_FREED|F_FREEING) &&
valInt(last_x) > 0 && valInt(last_y) > 0 )
{ ServiceMode(is_service_window(last_window),
{ AnswerMark mark;
EventObj e;
markAnswerStack(mark);
e = newObject(ClassEvent,
NAME_locStill, last_window,
last_x, last_y, last_buttons,
toInt(last_time + now - host_last_time), EAV);
addCodeReference(e);
postNamedEvent(e, (Graphical) last_window, DEFAULT, NAME_postEvent);
delCodeReference(e);
freeableObj(e);
rewindAnswerStack(mark, NIL);
})
}
status
ws_dispatch(Int FD, Any timeout)
{ XtIntervalId tid = 0;
XtInputId iid = 0;
status rval = SUCCEED;
int ofd = dispatch_fd;
int fd = (isDefault(FD) ? dispatch_fd :
isNil(FD) ? -1
: valInt(FD));
/* No context: wait for input */
/* timeout */
if ( ThePceXtAppContext == NULL )
{ int ready;
#ifdef HAVE_POLL
int to;
struct pollfd fds[1];
if ( isNil(timeout) )
{ to = -1;
} else if ( isDefault(timeout) )
{ to = 250;
} else if ( isInteger(timeout) )
{ to = valInt(timeout);
} else if ( instanceOfObject(timeout, ClassReal) )
{ to = (int)(valReal(timeout)*1000.0);
} else
to = 256;
fds[0].fd = fd;
fds[0].events = POLLIN;
ready = poll(fds, 1, to);
#else
struct timeval to;
struct timeval *tp = &to;
fd_set readfds;
int setmax = 0;
if ( isNil(timeout) )
{ tp = NULL;
} else if ( isDefault(timeout) )
{ to.tv_sec = 0;
to.tv_usec = 250000;
} else
{ double v;
if ( isInteger(timeout) )
v = (double)valInt(timeout)/1000.0;
else if ( instanceOfObject(timeout, ClassReal) )
v = valReal(timeout);
else
v = 0.25;
to.tv_sec = (long)v;
to.tv_usec = (long)(v * 1000000.0) % 1000000;
}
FD_ZERO(&readfds);
if ( fd >= 0 )
{ FD_SET(fd, &readfds);
setmax = max(setmax, fd);
dispatch_fd = fd;
}
ready = select(setmax+1, &readfds, NULL, NULL, tp);
#endif
dispatch_fd = ofd;
return (ready > 0 ? SUCCEED : FAIL);
} /* A display: dispatch until there */
/* is input or a timeout */
if ( fd >= 0 )
{ iid = XtAppAddInput(ThePceXtAppContext, fd,
(XtPointer) XtInputReadMask, is_pending, NULL);
dispatch_fd = fd;
}
if ( notNil(timeout) )
{ long to = -1;
if ( isInteger(timeout) )
to = valInt(timeout);
else if ( instanceOfObject(timeout, ClassReal) )
to = (long)(valReal(timeout)*1000.0);
if ( to > 0 )
tid = XtAppAddTimeOut(ThePceXtAppContext, to, is_timeout,
(XtPointer) &rval);
}
DEBUG(NAME_dispatch, Cprintf("Dispatch: timeout = %s, tid = %p\n",
pp(timeout), (void*)tid));
if ( pceMTTryLock(LOCK_PCE) )
{ RedrawDisplayManager(TheDisplayManager());
pceMTUnlock(LOCK_PCE);
}
/* All callbacks must be locked! */
XtAppProcessEvent(ThePceXtAppContext,
XtIMXEvent|XtIMTimer|XtIMAlternateInput);
if ( tid && rval ) /* if rval = FAIL, we had a timeout */
XtRemoveTimeOut(tid);
if ( iid )
XtRemoveInput(iid);
dispatch_fd = ofd;
considerLocStillEvent();
return rval;
}