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+/* $Xorg: XGMotion.c,v 1.4 2001/02/09 02:03:50 xorgcvs Exp $ */
+
+/************************************************************
+
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Hewlett-Packard not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+********************************************************/
+/* $XFree86: xc/lib/Xi/XGMotion.c,v 3.3 2001/12/14 19:55:12 dawes Exp $ */
+
+/***********************************************************************
+ *
+ * XGetDeviceMotionEvents - Get the motion history of an input device.
+ *
+ */
+
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/XInput.h>
+#include <X11/extensions/extutil.h>
+#include "XIint.h"
+
+XDeviceTimeCoord
+*XGetDeviceMotionEvents (dpy, dev, start, stop, nEvents, mode, axis_count)
+ register Display *dpy;
+ XDevice *dev;
+ Time start;
+ Time stop;
+ int *nEvents;
+ int *mode;
+ int *axis_count;
+ {
+ xGetDeviceMotionEventsReq *req;
+ xGetDeviceMotionEventsReply rep;
+ XDeviceTimeCoord *tc;
+ int *data, *bufp, *readp, *savp;
+ long size, size2;
+ int i, j;
+ XExtDisplayInfo *info = XInput_find_display (dpy);
+
+ LockDisplay (dpy);
+ if (_XiCheckExtInit(dpy, XInput_Initial_Release) == -1)
+ return ((XDeviceTimeCoord *) NoSuchExtension);
+
+ GetReq(GetDeviceMotionEvents,req);
+ req->reqType = info->codes->major_opcode;
+ req->ReqType = X_GetDeviceMotionEvents;
+ req->start = start;
+ req->stop = stop;
+ req->deviceid = dev->device_id;
+
+ if (!_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ *nEvents = 0;
+ return (NULL);
+ }
+
+ *mode = rep.mode;
+ *axis_count = rep.axes;
+ *nEvents = rep.nEvents;
+ if (!rep.nEvents)
+ {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (NULL);
+ }
+ size = rep.length << 2;
+ size2 = rep.nEvents *
+ (sizeof (XDeviceTimeCoord) + (rep.axes * sizeof (int)));
+ savp = readp = (int *) Xmalloc (size);
+ bufp = (int *) Xmalloc (size2);
+ if (!bufp || !savp)
+ {
+ *nEvents = 0;
+ _XEatData (dpy, (unsigned long) size);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (NULL);
+ }
+ _XRead (dpy, (char *) readp, size);
+
+ tc = (XDeviceTimeCoord *) bufp;
+ data = (int *) (tc + rep.nEvents);
+ for (i=0; i<*nEvents; i++,tc++)
+ {
+ tc->time = *readp++;
+ tc->data = data;
+ for (j=0; j<*axis_count; j++)
+ *data++ = *readp++;
+ }
+ XFree ((char *)savp);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return ((XDeviceTimeCoord *) bufp);
+ }
+
+void XFreeDeviceMotionEvents (events)
+ XDeviceTimeCoord *events;
+ {
+ XFree ((char *)events);
+ }