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+/* $Xorg: XListDev.c,v 1.5 2001/02/09 02:03:51 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/XListDev.c,v 3.4 2001/12/14 19:55:19 dawes Exp $ */
+
+/***********************************************************************
+ *
+ * XListInputDevices - Request the server to return a list of
+ * available input devices.
+ *
+ */
+
+#define NEED_REPLIES
+#define NEED_EVENTS
+#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"
+
+XDeviceInfo
+*XListInputDevices(dpy, ndevices)
+ register Display *dpy;
+ int *ndevices;
+ {
+ int size;
+ xListInputDevicesReq *req;
+ xListInputDevicesReply rep;
+ xDeviceInfo *list, *slist = NULL;
+ XDeviceInfo *sclist = NULL;
+ XDeviceInfo *clist = NULL;
+ xAnyClassPtr any, sav_any;
+ XAnyClassPtr Any;
+ char *nptr, *Nptr;
+ register int i,j,k;
+ register long rlen;
+ XExtDisplayInfo *info = XInput_find_display (dpy);
+
+ LockDisplay (dpy);
+ if (_XiCheckExtInit(dpy, XInput_Initial_Release) == -1)
+ return ((XDeviceInfo *) NULL);
+
+ GetReq(ListInputDevices,req);
+ req->reqType = info->codes->major_opcode;
+ req->ReqType = X_ListInputDevices;
+
+ if (! _XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (XDeviceInfo *) NULL;
+ }
+
+ if ((*ndevices = rep.ndevices)) /* at least 1 input device */
+ {
+ size = *ndevices * sizeof (XDeviceInfo);
+ rlen = rep.length << 2; /* multiply length by 4 */
+ list = (xDeviceInfo *) Xmalloc (rlen);
+ slist = list;
+ if (!slist)
+ {
+ _XEatData (dpy, (unsigned long) rlen);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (XDeviceInfo *) NULL;
+ }
+ _XRead (dpy, (char *)list, rlen);
+
+ any = (xAnyClassPtr) ((char *) list +
+ (*ndevices * sizeof(xDeviceInfo)));
+ sav_any = any;
+ for (i=0; i<*ndevices; i++, list++)
+ {
+ for (j=0; j<(int)list->num_classes; j++)
+ {
+ switch (any->class)
+ {
+ case KeyClass:
+ size += sizeof (XKeyInfo);
+ break;
+ case ButtonClass:
+ size += sizeof (XButtonInfo);
+ break;
+ case ValuatorClass:
+ {
+ xValuatorInfoPtr v;
+ v = (xValuatorInfoPtr) any;
+ size += sizeof (XValuatorInfo) +
+ (v->num_axes * sizeof (XAxisInfo));
+ break;
+ }
+ default:
+ break;
+ }
+ any = (xAnyClassPtr) ((char *) any + any->length);
+ }
+ }
+
+ for (i=0, nptr = (char *) any; i<*ndevices; i++)
+ {
+ size += *nptr +1;
+ nptr += (*nptr + 1);
+ }
+
+ clist = (XDeviceInfoPtr) Xmalloc (size);
+ if (!clist)
+ {
+ XFree ((char *)slist);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (XDeviceInfo *) NULL;
+ }
+ sclist = clist;
+ Any = (XAnyClassPtr) ((char *) clist +
+ (*ndevices * sizeof (XDeviceInfo)));
+ list = slist;
+ any = sav_any;
+ for (i=0; i<*ndevices; i++, list++, clist++)
+ {
+ clist->type = list->type;
+ clist->id = list->id;
+ clist->use = list->use;
+ clist->num_classes = list->num_classes;
+ clist->inputclassinfo = Any;
+ for (j=0; j<(int)list->num_classes; j++)
+ {
+ switch (any->class)
+ {
+ case KeyClass:
+ {
+ XKeyInfoPtr K = (XKeyInfoPtr) Any;
+ xKeyInfoPtr k = (xKeyInfoPtr) any;
+ K->class = KeyClass;
+ K->length = sizeof (XKeyInfo);
+ K->min_keycode = k->min_keycode;
+ K->max_keycode = k->max_keycode;
+ K->num_keys = k->num_keys;
+ break;
+ }
+ case ButtonClass:
+ {
+ XButtonInfoPtr B = (XButtonInfoPtr) Any;
+ xButtonInfoPtr b = (xButtonInfoPtr) any;
+ B->class = ButtonClass;
+ B->length = sizeof (XButtonInfo);
+ B->num_buttons = b->num_buttons;
+ break;
+ }
+ case ValuatorClass:
+ {
+ XValuatorInfoPtr V = (XValuatorInfoPtr) Any;
+ xValuatorInfoPtr v = (xValuatorInfoPtr) any;
+ XAxisInfoPtr A;
+ xAxisInfoPtr a;
+
+ V->class = ValuatorClass;
+ V->length = sizeof (XValuatorInfo) +
+ (v->num_axes * sizeof (XAxisInfo));
+ V->num_axes = v->num_axes;
+ V->motion_buffer = v->motion_buffer_size;
+ V->mode = v->mode;
+ A = (XAxisInfoPtr) ((char *) V + sizeof(XValuatorInfo));
+ V->axes = A;
+ a = (xAxisInfoPtr) ((char *) any +
+ sizeof (xValuatorInfo));
+ for (k=0; k<(int)v->num_axes; k++,a++,A++)
+ {
+ A->min_value = a->min_value;
+ A->max_value = a->max_value;
+ A->resolution = a->resolution;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ any = (xAnyClassPtr) ((char *) any + any->length);
+ Any = (XAnyClassPtr) ((char *) Any + Any->length);
+ }
+ }
+
+ clist = sclist;
+ nptr = (char *) any;
+ Nptr = (char *) Any;
+ for (i=0; i<*ndevices; i++,clist++)
+ {
+ clist->name = (char *) Nptr;
+ memcpy (Nptr, nptr+1, *nptr);
+ Nptr += (*nptr);
+ *Nptr++ = '\0';
+ nptr += (*nptr + 1);
+ }
+ }
+
+ XFree ((char *)slist);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return (sclist);
+ }
+
+/***********************************************************************
+ *
+ * Free the list of input devices.
+ *
+ */
+
+void XFreeDeviceList (list)
+ XDeviceInfo *list;
+ {
+ if (list != NULL)
+ {
+ XFree ((char *) list);
+ }
+ }
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