239 lines
7.1 KiB
C
239 lines
7.1 KiB
C
/************************************************************
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Hewlett-Packard not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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********************************************************/
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/***********************************************************************
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*
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* Extension function to change the pointer device.
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*
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*/
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#define NEED_EVENTS
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#define NEED_REPLIES
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h> /* for inputstr.h */
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#include <X11/Xproto.h> /* Request macro */
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#include "inputstr.h" /* DeviceIntPtr */
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#include <X11/extensions/XI.h>
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#include <X11/extensions/XIproto.h>
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#include "XIstubs.h"
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#include "windowstr.h" /* window structure */
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#include "scrnintstr.h" /* screen structure */
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#include "extnsionst.h"
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#include "extinit.h" /* LookupDeviceIntRec */
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#include "dixevents.h"
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#include "exevents.h"
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#include "exglobals.h"
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#include "chgptr.h"
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/***********************************************************************
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*
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* This procedure is invoked to swap the request bytes if the server and
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* client have a different byte order.
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*
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*/
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int
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SProcXChangePointerDevice(register ClientPtr client)
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{
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register char n;
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REQUEST(xChangePointerDeviceReq);
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swaps(&stuff->length, n);
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REQUEST_SIZE_MATCH(xChangePointerDeviceReq);
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return (ProcXChangePointerDevice(client));
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}
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/***********************************************************************
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*
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* This procedure changes the device used as the X pointer.
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*
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*/
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int
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ProcXChangePointerDevice(register ClientPtr client)
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{
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DeviceIntPtr xptr = inputInfo.pointer;
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DeviceIntPtr dev;
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ValuatorClassPtr v;
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xChangePointerDeviceReply rep;
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changeDeviceNotify ev;
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REQUEST(xChangePointerDeviceReq);
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REQUEST_SIZE_MATCH(xChangePointerDeviceReq);
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rep.repType = X_Reply;
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rep.RepType = X_ChangePointerDevice;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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dev = LookupDeviceIntRec(stuff->deviceid);
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if (dev == NULL) {
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rep.status = -1;
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SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0,
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BadDevice);
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return Success;
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}
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v = dev->valuator;
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if (v == NULL || v->numAxes < 2 ||
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stuff->xaxis >= v->numAxes || stuff->yaxis >= v->numAxes) {
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rep.status = -1;
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SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0, BadMatch);
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return Success;
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}
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if (((dev->grab) && !SameClient(dev->grab, client)) ||
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((xptr->grab) && !SameClient(xptr->grab, client)))
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rep.status = AlreadyGrabbed;
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else if ((dev->sync.frozen &&
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dev->sync.other && !SameClient(dev->sync.other, client)) ||
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(xptr->sync.frozen &&
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xptr->sync.other && !SameClient(xptr->sync.other, client)))
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rep.status = GrabFrozen;
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else {
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if (ChangePointerDevice(xptr, dev, stuff->xaxis, stuff->yaxis) !=
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Success) {
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SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0,
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BadDevice);
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return Success;
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}
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if (dev->focus)
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DeleteFocusClassDeviceStruct(dev);
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if (!dev->button)
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InitButtonClassDeviceStruct(dev, 0, NULL);
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if (!dev->ptrfeed)
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InitPtrFeedbackClassDeviceStruct(dev, (PtrCtrlProcPtr) NoopDDA);
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RegisterOtherDevice(xptr);
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RegisterPointerDevice(dev);
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ev.type = ChangeDeviceNotify;
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ev.deviceid = stuff->deviceid;
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ev.time = currentTime.milliseconds;
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ev.request = NewPointer;
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SendEventToAllWindows(dev, ChangeDeviceNotifyMask, (xEvent *) & ev, 1);
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SendMappingNotify(MappingPointer, 0, 0, client);
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rep.status = 0;
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}
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WriteReplyToClient(client, sizeof(xChangePointerDeviceReply), &rep);
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return Success;
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}
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void
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DeleteFocusClassDeviceStruct(DeviceIntPtr dev)
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{
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xfree(dev->focus->trace);
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xfree(dev->focus);
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dev->focus = NULL;
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}
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/***********************************************************************
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*
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* Send an event to interested clients in all windows on all screens.
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*
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*/
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void
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SendEventToAllWindows(DeviceIntPtr dev, Mask mask, xEvent * ev, int count)
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{
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int i;
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WindowPtr pWin, p1;
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for (i = 0; i < screenInfo.numScreens; i++) {
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pWin = WindowTable[i];
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(void)DeliverEventsToWindow(pWin, ev, count, mask, NullGrab, dev->id);
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p1 = pWin->firstChild;
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FindInterestedChildren(dev, p1, mask, ev, count);
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}
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}
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/***********************************************************************
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*
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* Walk through the window tree, finding all clients that want to know
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* about the ChangeDeviceNotify Event.
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*
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*/
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void
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FindInterestedChildren(DeviceIntPtr dev, WindowPtr p1, Mask mask,
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xEvent * ev, int count)
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{
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WindowPtr p2;
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while (p1) {
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p2 = p1->firstChild;
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(void)DeliverEventsToWindow(p1, ev, count, mask, NullGrab, dev->id);
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FindInterestedChildren(dev, p2, mask, ev, count);
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p1 = p1->nextSib;
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}
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}
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/***********************************************************************
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*
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* This procedure writes the reply for the XChangePointerDevice
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* function, if the client and server have a different byte ordering.
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*
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*/
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void
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SRepXChangePointerDevice(ClientPtr client, int size,
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xChangePointerDeviceReply * rep)
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{
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register char n;
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swaps(&rep->sequenceNumber, n);
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swapl(&rep->length, n);
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WriteToClient(client, size, (char *)rep);
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}
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