xorg-server-1.4/Xi/closedev.c

   1 /************************************************************
   2
   3 Copyright 1989, 1998  The Open Group
   4
   5 Permission to use, copy, modify, distribute, and sell this software and its
   6 documentation for any purpose is hereby granted without fee, provided that
   7 the above copyright notice appear in all copies and that both that
   8 copyright notice and this permission notice appear in supporting
   9 documentation.
  10
  11 The above copyright notice and this permission notice shall be included in
  12 all copies or substantial portions of the Software.
  13
  14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20
  21 Except as contained in this notice, the name of The Open Group shall not be
  22 used in advertising or otherwise to promote the sale, use or other dealings
  23 in this Software without prior written authorization from The Open Group.
  24
  25 Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
  26
  27                         All Rights Reserved
  28
  29 Permission to use, copy, modify, and distribute this software and its
  30 documentation for any purpose and without fee is hereby granted,
  31 provided that the above copyright notice appear in all copies and that
  32 both that copyright notice and this permission notice appear in
  33 supporting documentation, and that the name of Hewlett-Packard not be
  34 used in advertising or publicity pertaining to distribution of the
  35 software without specific, written prior permission.
  36
  37 HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  38 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  39 HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  40 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  41 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  42 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  43 SOFTWARE.
  44
  45 ********************************************************/
  46
  47 /***********************************************************************
  48  *
  49  * Extension function to close an extension input device.
  50  *
  51  */
  52
  53 #define  NEED_EVENTS
  54 #define  NEED_REPLIES
  55 #ifdef HAVE_DIX_CONFIG_H
  56 #include <dix-config.h>
  57 #endif
  58
  59 #include <X11/X.h>      /* for inputstr.h    */
  60 #include <X11/Xproto.h> /* Request macro     */
  61 #include "inputstr.h"   /* DeviceIntPtr      */
  62 #include "windowstr.h"  /* window structure  */
  63 #include "scrnintstr.h" /* screen structure  */
  64 #include <X11/extensions/XI.h>
  65 #include <X11/extensions/XIproto.h>
  66 #include "XIstubs.h"
  67 #include "extnsionst.h"
  68 #include "extinit.h"    /* LookupDeviceIntRec */
  69 #include "exglobals.h"
  70
  71 #include "closedev.h"
  72
  73 /***********************************************************************
  74  *
  75  * This procedure closes an input device.
  76  *
  77  */
  78
  79 int
  80 SProcXCloseDevice(ClientPtr client)
  81 {
  82     char n;
  83
  84     REQUEST(xCloseDeviceReq);
  85     swaps(&stuff->length, n);
  86     REQUEST_SIZE_MATCH(xCloseDeviceReq);
  87     return (ProcXCloseDevice(client));
  88 }
  89
  90 /***********************************************************************
  91  *
  92  * Clear out event selections and passive grabs from a window for the
  93  * specified device.
  94  *
  95  */
  96
  97 static void
  98 DeleteDeviceEvents(DeviceIntPtr dev, WindowPtr pWin, ClientPtr client)
  99 {
 100     InputClientsPtr others;
 101     OtherInputMasks *pOthers;
 102     GrabPtr grab, next;
 103
 104     if ((pOthers = wOtherInputMasks(pWin)) != 0)
 105         for (others = pOthers->inputClients; others; others = others->next)
 106             if (SameClient(others, client))
 107                 others->mask[dev->id] = NoEventMask;
 108
 109     for (grab = wPassiveGrabs(pWin); grab; grab = next) {
 110         next = grab->next;
 111         if ((grab->device == dev) &&
 112             (client->clientAsMask == CLIENT_BITS(grab->resource)))
 113             FreeResource(grab->resource, RT_NONE);
 114     }
 115 }
 116
 117 /***********************************************************************
 118  *
 119  * Walk througth the window tree, deleting event selections for this client
 120  * from this device from all windows.
 121  *
 122  */
 123
 124 static void
 125 DeleteEventsFromChildren(DeviceIntPtr dev, WindowPtr p1, ClientPtr client)
 126 {
 127     WindowPtr p2;
 128
 129     while (p1) {
 130         p2 = p1->firstChild;
 131         DeleteDeviceEvents(dev, p1, client);
 132         DeleteEventsFromChildren(dev, p2, client);
 133         p1 = p1->nextSib;
 134     }
 135 }
 136
 137 /***********************************************************************
 138  *
 139  * This procedure closes an input device.
 140  *
 141  */
 142
 143 int
 144 ProcXCloseDevice(ClientPtr client)
 145 {
 146     int i;
 147     WindowPtr pWin, p1;
 148     DeviceIntPtr d;
 149
 150     REQUEST(xCloseDeviceReq);
 151     REQUEST_SIZE_MATCH(xCloseDeviceReq);
 152
 153     d = LookupDeviceIntRec(stuff->deviceid);
 154     if (d == NULL) {
 155         SendErrorToClient(client, IReqCode, X_CloseDevice, 0, BadDevice);
 156         return Success;
 157     }
 158
 159     if (d->grab && SameClient(d->grab, client))
 160         (*d->DeactivateGrab) (d);       /* release active grab */
 161
 162     /* Remove event selections from all windows for events from this device
 163      * and selected by this client.
 164      * Delete passive grabs from all windows for this device.      */
 165
 166     for (i = 0; i < screenInfo.numScreens; i++) {
 167         pWin = WindowTable[i];
 168         DeleteDeviceEvents(d, pWin, client);
 169         p1 = pWin->firstChild;
 170         DeleteEventsFromChildren(d, p1, client);
 171     }
 172
 173     CloseInputDevice(d, client);
 174     return Success;
 175 }