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+/* $Xorg: ungrdevb.c,v 1.4 2001/02/09 02:04:35 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.
+
+********************************************************/
+
+/***********************************************************************
+ *
+ * Request to release a grab of a button on 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"
+
+#define AllModifiersMask ( \
+ ShiftMask | LockMask | ControlMask | Mod1Mask | Mod2Mask | \
+ Mod3Mask | Mod4Mask | Mod5Mask )
+extern int IReqCode;
+extern int BadDevice;
+extern int DeviceButtonPress;
+extern void (* ReplySwapVector[256]) ();
+DeviceIntPtr LookupDeviceIntRec();
+
+/***********************************************************************
+ *
+ * Handle requests from a client with a different byte order.
+ *
+ */
+
+int
+SProcXUngrabDeviceButton(client)
+ register ClientPtr client;
+ {
+ register char n;
+
+ REQUEST(xUngrabDeviceButtonReq);
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
+ swapl(&stuff->grabWindow, n);
+ swaps(&stuff->modifiers, n);
+ return(ProcXUngrabDeviceButton(client));
+ }
+
+/***********************************************************************
+ *
+ * Release a grab of a button on an extension device.
+ *
+ */
+
+int
+ProcXUngrabDeviceButton(client)
+ ClientPtr client;
+ {
+ DeviceIntPtr dev;
+ DeviceIntPtr mdev;
+ WindowPtr pWin;
+ GrabRec temporaryGrab;
+
+ REQUEST(xUngrabDeviceButtonReq);
+ REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
+
+ dev = LookupDeviceIntRec (stuff->grabbed_device);
+ if (dev == NULL)
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadDevice);
+ return Success;
+ }
+ if (dev->button == NULL)
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadMatch);
+ return Success;
+ }
+
+ if (stuff->modifier_device != UseXKeyboard)
+ {
+ mdev = LookupDeviceIntRec (stuff->modifier_device);
+ if (mdev == NULL)
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadDevice);
+ return Success;
+ }
+ if (mdev->key == NULL)
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadMatch);
+ return Success;
+ }
+ }
+ else
+ mdev = (DeviceIntPtr) LookupKeyboardDevice();
+
+ pWin = LookupWindow(stuff->grabWindow, client);
+ if (!pWin)
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadWindow);
+ return Success;
+ }
+
+ if ((stuff->modifiers != AnyModifier) &&
+ (stuff->modifiers & ~AllModifiersMask))
+ {
+ SendErrorToClient(client, IReqCode, X_UngrabDeviceButton, 0,
+ BadValue);
+ return Success;
+ }
+
+ temporaryGrab.resource = client->clientAsMask;
+ temporaryGrab.device = dev;
+ temporaryGrab.window = pWin;
+ temporaryGrab.type = DeviceButtonPress;
+ temporaryGrab.modifierDevice = mdev;
+ temporaryGrab.modifiersDetail.exact = stuff->modifiers;
+ temporaryGrab.modifiersDetail.pMask = NULL;
+ temporaryGrab.detail.exact = stuff->button;
+ temporaryGrab.detail.pMask = NULL;
+
+ DeletePassiveGrabFromList(&temporaryGrab);
+ return Success;
+ }