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Diffstat (limited to 'Xi/grabdev.c')
| -rw-r--r-- | Xi/grabdev.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/Xi/grabdev.c b/Xi/grabdev.c new file mode 100644 index 000000000..cb2370adf --- /dev/null +++ b/Xi/grabdev.c @@ -0,0 +1,225 @@ +/* $Xorg: grabdev.c,v 1.4 2001/02/09 02:04:34 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. + +********************************************************/ + +/*********************************************************************** + * + * Extension function to grab an extension device. + * + */ + + +#define NEED_EVENTS +#define NEED_REPLIES +#include "X.h" /* for inputstr.h */ +#include "Xproto.h" /* Request macro */ +#include "inputstr.h" /* DeviceIntPtr */ +#include "windowstr.h" /* window structure */ +#include "XI.h" +#include "XIproto.h" + +extern int IReqCode; +extern int BadDevice; +extern int BadClass; +extern XExtEventInfo EventInfo[]; +extern void (* ReplySwapVector[256]) (); +DeviceIntPtr LookupDeviceIntRec(); + +/*********************************************************************** + * + * Swap the request if the requestor has a different byte order than us. + * + */ + +int +SProcXGrabDevice(client) + register ClientPtr client; + { + register char n; + register long *p; + register int i; + + REQUEST(xGrabDeviceReq); + swaps(&stuff->length, n); + REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); + swapl(&stuff->grabWindow, n); + swapl(&stuff->time, n); + swaps(&stuff->event_count, n); + p = (long *) &stuff[1]; + for (i=0; i<stuff->event_count; i++) + { + swapl(p, n); + p++; + } + + return(ProcXGrabDevice(client)); + } + +/*********************************************************************** + * + * Grab an extension device. + * + */ + +int +ProcXGrabDevice(client) + ClientPtr client; + { + int error; + xGrabDeviceReply rep; + DeviceIntPtr dev; + struct tmask tmp[EMASKSIZE]; + + REQUEST(xGrabDeviceReq); + REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); + + if (stuff->length !=(sizeof(xGrabDeviceReq)>>2) + stuff->event_count) + { + SendErrorToClient (client, IReqCode, X_GrabDevice, 0, BadLength); + return Success; + } + + rep.repType = X_Reply; + rep.RepType = X_GrabDevice; + rep.sequenceNumber = client->sequence; + rep.length = 0; + + dev = LookupDeviceIntRec (stuff->deviceid); + if (dev == NULL) + { + SendErrorToClient(client, IReqCode, X_GrabDevice, 0, BadDevice); + return Success; + } + + if (CreateMaskFromList (client, (XEventClass *)&stuff[1], + stuff->event_count, tmp, dev, X_GrabDevice) != Success) + return Success; + + error = GrabDevice (client, dev, stuff->this_device_mode, + stuff->other_devices_mode, stuff->grabWindow, stuff->ownerEvents, + stuff->time, tmp[stuff->deviceid].mask, &rep.status); + + if (error != Success) + { + SendErrorToClient(client, IReqCode, X_GrabDevice, 0, error); + return Success; + } + WriteReplyToClient(client, sizeof(xGrabDeviceReply), &rep); + return Success; + } + + +/*********************************************************************** + * + * This procedure creates an event mask from a list of XEventClasses. + * + */ + +int +CreateMaskFromList (client, list, count, mask, dev, req) + ClientPtr client; + XEventClass *list; + int count; + struct tmask mask[]; + DeviceIntPtr dev; + int req; + { + int i,j; + int device; + DeviceIntPtr tdev; + extern int ExtEventIndex; + + for (i=0; i<EMASKSIZE; i++) + { + mask[i].mask = 0; + mask[i].dev = NULL; + } + + for (i=0; i<count; i++, list++) + { + device = *list >> 8; + if (device > 255) + { + SendErrorToClient(client, IReqCode, req, 0, BadClass); + return BadClass; + } + tdev = LookupDeviceIntRec (device); + if (tdev==NULL || (dev != NULL && tdev != dev)) + { + SendErrorToClient(client, IReqCode, req, 0, BadClass); + return BadClass; + } + + for (j=0; j<ExtEventIndex; j++) + if (EventInfo[j].type == (*list & 0xff)) + { + mask[device].mask |= EventInfo[j].mask; + mask[device].dev = (Pointer) tdev; + break; + } + } + return Success; + } + +/*********************************************************************** + * + * This procedure writes the reply for the XGrabDevice function, + * if the client and server have a different byte ordering. + * + */ + +SRepXGrabDevice (client, size, rep) + ClientPtr client; + int size; + xGrabDeviceReply *rep; + { + register char n; + + swaps(&rep->sequenceNumber, n); + swapl(&rep->length, n); + WriteToClient(client, size, (char *)rep); + } |