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Diffstat (limited to 'Xi/chgptr.c')
| -rw-r--r-- | Xi/chgptr.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Xi/chgptr.c b/Xi/chgptr.c new file mode 100644 index 000000000..8c65c6ec2 --- /dev/null +++ b/Xi/chgptr.c @@ -0,0 +1,252 @@ +/* $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. + +********************************************************/ + +/*********************************************************************** + * + * Extension function to change the pointer device. + * + */ + +#define NEED_EVENTS +#define NEED_REPLIES +#include "X.h" /* for inputstr.h */ +#include "Xproto.h" /* Request macro */ +#include "XI.h" +#include "XIproto.h" +#include "inputstr.h" /* DeviceIntPtr */ +#include "windowstr.h" /* window structure */ +#include "scrnintstr.h" /* screen structure */ + +extern int IReqCode; +extern int BadDevice; +extern int ChangeDeviceNotify; +extern Mask ChangeDeviceNotifyMask; +extern InputInfo inputInfo; +extern ScreenInfo screenInfo; +extern WindowPtr *WindowTable; +extern void (* ReplySwapVector[256]) (); +DeviceIntPtr LookupDeviceIntRec(); + +/*********************************************************************** + * + * 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. + * + */ + +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 ((DevicePtr)dev); + + ev.type = ChangeDeviceNotify; + ev.deviceid = stuff->deviceid; + ev.time = currentTime.milliseconds; + ev.request = NewPointer; + + SendEventToAllWindows (dev, ChangeDeviceNotifyMask, &ev, 1); + SendMappingNotify (MappingPointer, 0, 0, client); + + rep.status = 0; + } + + WriteReplyToClient (client, sizeof (xChangePointerDeviceReply), + &rep); + return Success; + } + +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. + * + */ + +SendEventToAllWindows (dev, mask, ev, count) + DeviceIntPtr dev; + Mask mask; + xEvent *ev; + int count; + { + int i; + WindowPtr pWin, p1; + + for (i=0; i<screenInfo.numScreens; i++) + { + pWin = WindowTable[i]; + (void)DeliverEventsToWindow(pWin, ev, count, mask, NullGrab, dev->id); + 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. + * + */ + +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. + * + */ + +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); + } |