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/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* Damien Doligez, projet Para, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
/* rotatecursor library, written by <Damien.Doligez@inria.fr>
This file is in the public domain.
version 1.13
See rotatecursor.h for documentation.
*/
#include <CursorCtl.h>
#include <MacTypes.h>
#include <stdlib.h>
#include <Timer.h>
#include "rotatecursor.h"
typedef struct {
TMTask t;
int volatile *p1;
int volatile *p2;
} Xtmtask;
int volatile rotatecursor_flag = 1;
static int rotatecursor_inited = 0;
static int rotatecursor_period = 50;
static Xtmtask rotatecursor_tmtask;
static pascal void (*rotatecursor_action) (long) = &RotateCursor;
#if GENERATINGCFM
static void rotatecursor_timerproc (Xtmtask *p)
{
if (p->p1 != NULL && *(p->p1) == 0) *(p->p1) = 1;
if (p->p2 != NULL && *(p->p2) == 0) *(p->p2) = 1;
}
#else /* GENERATINGCFM */
extern Xtmtask *getparam() ONEWORDINLINE(0x2009); /* MOVE.L A1, D0 */
static void rotatecursor_timerproc (void)
{
register Xtmtask *p = getparam ();
if (p->p1 != NULL && *(p->p1) == 0) *(p->p1) = 1;
if (p->p2 != NULL && *(p->p2) == 0) *(p->p2) = 1;
}
#endif /* else GENERATINGCFM */
void rotatecursor_final (void)
{
if (rotatecursor_inited){
RmvTime ((QElemPtr) &rotatecursor_tmtask);
rotatecursor_flag = 1;
rotatecursor_inited = 0;
}
}
static void rotatecursor_init (void)
{
if (rotatecursor_inited) return;
rotatecursor_tmtask.t.tmAddr = NewTimerProc (rotatecursor_timerproc);
rotatecursor_tmtask.t.tmCount = 0;
rotatecursor_tmtask.t.tmWakeUp = 0;
rotatecursor_tmtask.t.tmReserved = 0;
rotatecursor_tmtask.p1 = NULL;
rotatecursor_tmtask.p2 = &rotatecursor_flag;
InsTime ((QElemPtr) &rotatecursor_tmtask);
atexit (rotatecursor_final);
rotatecursor_flag = 1;
rotatecursor_inited = 1;
}
void rotatecursor_options (int volatile *p1, int period, pascal void (*f) (long))
{
if (!rotatecursor_inited) rotatecursor_init ();
rotatecursor_tmtask.p1 = p1;
if (p1 != NULL && *p1 == 0) *p1 = rotatecursor_flag;
rotatecursor_period = (period == 0) ? 50 : period;
rotatecursor_action = (f == NULL) ? &RotateCursor : f;
}
int rotatecursor_rearm (void)
{
if (!rotatecursor_inited) rotatecursor_init ();
rotatecursor_flag = 0;
PrimeTime ((QElemPtr) &rotatecursor_tmtask, rotatecursor_period);
return 0;
}
int rotatecursor_ticker (void)
{
if (!rotatecursor_inited) rotatecursor_init ();
rotatecursor_rearm ();
(*rotatecursor_action) (32);
return 0;
}
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