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- /* $XConsortium: xchgdctl.c,v 1.1 91/07/24 15:51:26 rws Exp $ */
-
- /************************************************************
- Copyright (c) 1989 by Hewlett-Packard Company, Palo Alto, California, and the
- Massachusetts Institute of Technology, Cambridge, Massachusetts.
-
- 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 names of Hewlett-Packard or MIT 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.
-
- ********************************************************/
-
- /********************************************************************
- *
- * Change Device control attributes for an extension device.
- *
- */
-
- #define NEED_EVENTS /* for inputstr.h */
- #define NEED_REPLIES
- #include "X.h" /* for inputstr.h */
- #include "Xproto.h" /* Request macro */
- #include "inputstr.h" /* DeviceIntPtr */
- #include "XI.h"
- #include "XIproto.h" /* control constants */
-
- extern int IReqCode;
- extern int BadDevice, DeviceBusy;
- extern void (* ReplySwapVector[256]) ();
- DeviceIntPtr LookupDeviceIntRec();
-
- /***********************************************************************
- *
- * This procedure changes the control attributes for an extension device,
- * for clients on machines with a different byte ordering than the server.
- *
- */
-
- int
- SProcXChangeDeviceControl(client)
- register ClientPtr client;
- {
- register char n;
-
- REQUEST(xChangeDeviceControlReq);
- swaps(&stuff->length, n);
- swaps(&stuff->control, n);
- return(ProcXChangeDeviceControl(client));
- }
-
- /***********************************************************************
- *
- * Change the control attributes.
- *
- */
-
- ProcXChangeDeviceControl(client)
- ClientPtr client;
- {
- int i, len, status;
- DeviceIntPtr dev;
- xDeviceResolutionCtl *r;
- xChangeDeviceControlReply rep;
- AxisInfoPtr a;
- CARD32 *resolution;
-
- REQUEST(xChangeDeviceControlReq);
- REQUEST_AT_LEAST_SIZE(xChangeDeviceControlReq);
-
- len = stuff->length - (sizeof(xChangeDeviceControlReq) >>2);
- dev = LookupDeviceIntRec (stuff->deviceid);
- if (dev == NULL)
- {
- SendErrorToClient (client, IReqCode, X_ChangeDeviceControl, 0,
- BadDevice);
- return Success;
- }
-
- rep.repType = X_Reply;
- rep.RepType = X_ChangeDeviceControl;
- rep.length = 0;
- rep.sequenceNumber = client->sequence;
-
- switch (stuff->control)
- {
- case DEVICE_RESOLUTION:
- if (!dev->valuator)
- {
- SendErrorToClient (client, IReqCode, X_ChangeDeviceControl, 0,
- BadMatch);
- return Success;
- }
- if ((dev->grab) && !SameClient(dev->grab, client))
- {
- rep.status = AlreadyGrabbed;
- WriteReplyToClient(client, sizeof(xChangeDeviceControlReply),
- &rep);
- return Success;
- }
- r = (xDeviceResolutionCtl *) &stuff[1];
- resolution = (CARD32 *) (r + 1);
- if (r->first_valuator + r->num_valuators > dev->valuator->numAxes)
- {
- SendErrorToClient (client, IReqCode, X_ChangeDeviceControl, 0,
- BadValue);
- return Success;
- }
- status = ChangeDeviceControl(client, dev, r);
- if (status == Success)
- {
- a = &dev->valuator->axes[r->first_valuator];
- for (i=0; i<r->num_valuators; i++)
- if (*(resolution+i) < (a+i)->min_resolution ||
- *(resolution+i) > (a+i)->max_resolution)
- {
- SendErrorToClient (client, IReqCode,
- X_ChangeDeviceControl, 0, BadValue);
- return Success;
- }
- for (i=0; i<r->num_valuators; i++)
- (a++)->resolution = *resolution++;
- }
- else if (status == DeviceBusy)
- {
- rep.status = DeviceBusy;
- WriteReplyToClient(client, sizeof(xChangeDeviceControlReply),
- &rep);
- return Success;
- }
- else
- {
- SendErrorToClient (client, IReqCode, X_ChangeDeviceControl, 0,
- BadMatch);
- return Success;
- }
- break;
- default:
- SendErrorToClient (client, IReqCode, X_ChangeDeviceControl, 0,
- BadValue);
- return Success;
- }
- WriteReplyToClient(client, sizeof(xChangeDeviceControlReply), &rep);
- return Success;
- }
-
- /***********************************************************************
- *
- * This procedure writes the reply for the xChangeDeviceControl function,
- * if the client and server have a different byte ordering.
- *
- */
-
- SRepXChangeDeviceControl (client, size, rep)
- ClientPtr client;
- int size;
- xChangeDeviceControlReply *rep;
- {
- register char n;
-
- swaps(&rep->sequenceNumber, n);
- swapl(&rep->length, n);
- WriteToClient(client, size, rep);
- }
-
-