ungrdevb.c revision 4642e01f 
1/************************************************************
2
3Copyright 1989, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
26
27			All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Hewlett-Packard not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45********************************************************/
46
47/***********************************************************************
48 *
49 * Request to release a grab of a button on an extension 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 "inputstr.h"	/* DeviceIntPtr      */
60#include "windowstr.h"	/* window structure  */
61#include <X11/extensions/XI.h>
62#include <X11/extensions/XIproto.h>
63#include "exglobals.h"
64#include "dixgrabs.h"
65
66#include "ungrdevb.h"
67
68#define AllModifiersMask ( \
69	ShiftMask | LockMask | ControlMask | Mod1Mask | Mod2Mask | \
70	Mod3Mask | Mod4Mask | Mod5Mask )
71
72/***********************************************************************
73 *
74 * Handle requests from a client with a different byte order.
75 *
76 */
77
78int
79SProcXUngrabDeviceButton(ClientPtr client)
80{
81    char n;
82
83    REQUEST(xUngrabDeviceButtonReq);
84    swaps(&stuff->length, n);
85    REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
86    swapl(&stuff->grabWindow, n);
87    swaps(&stuff->modifiers, n);
88    return (ProcXUngrabDeviceButton(client));
89}
90
91/***********************************************************************
92 *
93 * Release a grab of a button on an extension device.
94 *
95 */
96
97int
98ProcXUngrabDeviceButton(ClientPtr client)
99{
100    DeviceIntPtr dev;
101    DeviceIntPtr mdev;
102    WindowPtr pWin;
103    GrabRec temporaryGrab;
104    int rc;
105
106    REQUEST(xUngrabDeviceButtonReq);
107    REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
108
109    rc = dixLookupDevice(&dev, stuff->grabbed_device, client, DixGrabAccess);
110    if (rc != Success)
111	return rc;
112    if (dev->button == NULL)
113	return BadMatch;
114
115    if (stuff->modifier_device != UseXKeyboard) {
116	rc = dixLookupDevice(&mdev, stuff->modifier_device, client,
117			     DixReadAccess);
118	if (rc != Success)
119	    return BadDevice;
120	if (mdev->key == NULL)
121	    return BadMatch;
122    } else
123	mdev = PickKeyboard(client);
124
125    rc = dixLookupWindow(&pWin, stuff->grabWindow, client, DixSetAttrAccess);
126    if (rc != Success)
127	return rc;
128
129    if ((stuff->modifiers != AnyModifier) &&
130	(stuff->modifiers & ~AllModifiersMask))
131	return BadValue;
132
133    temporaryGrab.resource = client->clientAsMask;
134    temporaryGrab.device = dev;
135    temporaryGrab.window = pWin;
136    temporaryGrab.type = DeviceButtonPress;
137    temporaryGrab.modifierDevice = mdev;
138    temporaryGrab.modifiersDetail.exact = stuff->modifiers;
139    temporaryGrab.modifiersDetail.pMask = NULL;
140    temporaryGrab.detail.exact = stuff->button;
141    temporaryGrab.detail.pMask = NULL;
142
143    DeletePassiveGrabFromList(&temporaryGrab);
144    return Success;
145}
146