/* $Xorg: chgptr.c,v 1.4 2001/02/09 02:04:33 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/programs/Xserver/Xi/chgptr.c,v 3.6 2001/08/23 14:56:19 alanh Exp $ */ /*********************************************************************** * * Extension function to change the pointer device. * */ #define NEED_EVENTS #define NEED_REPLIES #ifdef HAVE_DIX_CONFIG_H #include #endif #include /* for inputstr.h */ #include /* Request macro */ #include "inputstr.h" /* DeviceIntPtr */ #include #include #include "XIstubs.h" #include "windowstr.h" /* window structure */ #include "scrnintstr.h" /* screen structure */ #include "extnsionst.h" #include "extinit.h" /* LookupDeviceIntRec */ #include "dixevents.h" #include "exevents.h" #include "exglobals.h" #include "chgptr.h" /*********************************************************************** * * This procedure is invoked to swap the request bytes if the server and * client have a different byte order. * */ int SProcXChangePointerDevice(client) register ClientPtr client; { register char n; REQUEST(xChangePointerDeviceReq); swaps(&stuff->length, n); REQUEST_SIZE_MATCH(xChangePointerDeviceReq); return(ProcXChangePointerDevice(client)); } /*********************************************************************** * * This procedure changes the device used as the X pointer. * */ int ProcXChangePointerDevice (client) register ClientPtr client; { DeviceIntPtr xptr = inputInfo.pointer; DeviceIntPtr dev; ValuatorClassPtr v; xChangePointerDeviceReply rep; changeDeviceNotify ev; REQUEST(xChangePointerDeviceReq); REQUEST_SIZE_MATCH(xChangePointerDeviceReq); rep.repType = X_Reply; rep.RepType = X_ChangePointerDevice; rep.length = 0; rep.sequenceNumber = client->sequence; dev = LookupDeviceIntRec (stuff->deviceid); if (dev == NULL) { rep.status = -1; SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0, BadDevice); return Success; } v = dev->valuator; if (v == NULL || v->numAxes < 2 || stuff->xaxis >= v->numAxes || stuff->yaxis >= v->numAxes) { rep.status = -1; SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0, BadMatch); return Success; } if (((dev->grab) && !SameClient(dev->grab, client)) || ((xptr->grab) && !SameClient(xptr->grab, client))) rep.status = AlreadyGrabbed; else if ((dev->sync.frozen && dev->sync.other && !SameClient(dev->sync.other, client)) || (xptr->sync.frozen && xptr->sync.other && !SameClient(xptr->sync.other, client))) rep.status = GrabFrozen; else { if (ChangePointerDevice ( xptr, dev, stuff->xaxis, stuff->yaxis) != Success) { SendErrorToClient(client, IReqCode, X_ChangePointerDevice, 0, BadDevice); return Success; } if (dev->focus) DeleteFocusClassDeviceStruct(dev); if (!dev->button) InitButtonClassDeviceStruct (dev, 0, NULL); if (!dev->ptrfeed) InitPtrFeedbackClassDeviceStruct(dev, (PtrCtrlProcPtr)NoopDDA); RegisterOtherDevice (xptr); RegisterPointerDevice (dev); ev.type = ChangeDeviceNotify; ev.deviceid = stuff->deviceid; ev.time = currentTime.milliseconds; ev.request = NewPointer; SendEventToAllWindows (dev, ChangeDeviceNotifyMask, (xEvent *)&ev, 1); SendMappingNotify (MappingPointer, 0, 0, client); rep.status = 0; } WriteReplyToClient (client, sizeof (xChangePointerDeviceReply), &rep); return Success; } void DeleteFocusClassDeviceStruct(dev) DeviceIntPtr dev; { xfree(dev->focus->trace); xfree(dev->focus); dev->focus = NULL; } /*********************************************************************** * * Send an event to interested clients in all windows on all screens. * */ void SendEventToAllWindows (dev, mask, ev, count) DeviceIntPtr dev; Mask mask; xEvent *ev; int count; { int i; WindowPtr pWin, p1; for (i=0; iid); p1 = pWin->firstChild; FindInterestedChildren (dev, p1, mask, ev, count); } } /*********************************************************************** * * Walk through the window tree, finding all clients that want to know * about the ChangeDeviceNotify Event. * */ void FindInterestedChildren (dev, p1, mask, ev, count) DeviceIntPtr dev; WindowPtr p1; Mask mask; xEvent *ev; int count; { WindowPtr p2; while (p1) { p2 = p1->firstChild; (void)DeliverEventsToWindow(p1, ev, count, mask, NullGrab, dev->id); FindInterestedChildren (dev, p2, mask, ev, count); p1 = p1->nextSib; } } /*********************************************************************** * * This procedure writes the reply for the XChangePointerDevice * function, if the client and server have a different byte ordering. * */ void SRepXChangePointerDevice (client, size, rep) ClientPtr client; int size; xChangePointerDeviceReply *rep; { register char n; swaps(&rep->sequenceNumber, n); swapl(&rep->length, n); WriteToClient(client, size, (char *)rep); }