ungrdevb.c revision 6747b715 
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#ifdef HAVE_DIX_CONFIG_H
54#include <dix-config.h>
55#endif
56
57#include "inputstr.h"	/* DeviceIntPtr      */
58#include "windowstr.h"	/* window structure  */
59#include <X11/extensions/XI.h>
60#include <X11/extensions/XIproto.h>
61#include "exglobals.h"
62#include "dixgrabs.h"
63
64#include "ungrdevb.h"
65
66#define AllModifiersMask ( \
67	ShiftMask | LockMask | ControlMask | Mod1Mask | Mod2Mask | \
68	Mod3Mask | Mod4Mask | Mod5Mask )
69
70/***********************************************************************
71 *
72 * Handle requests from a client with a different byte order.
73 *
74 */
75
76int
77SProcXUngrabDeviceButton(ClientPtr client)
78{
79    char n;
80
81    REQUEST(xUngrabDeviceButtonReq);
82    swaps(&stuff->length, n);
83    REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
84    swapl(&stuff->grabWindow, n);
85    swaps(&stuff->modifiers, n);
86    return (ProcXUngrabDeviceButton(client));
87}
88
89/***********************************************************************
90 *
91 * Release a grab of a button on an extension device.
92 *
93 */
94
95int
96ProcXUngrabDeviceButton(ClientPtr client)
97{
98    DeviceIntPtr dev;
99    DeviceIntPtr mdev;
100    WindowPtr pWin;
101    GrabRec temporaryGrab;
102    int rc;
103
104    REQUEST(xUngrabDeviceButtonReq);
105    REQUEST_SIZE_MATCH(xUngrabDeviceButtonReq);
106
107    rc = dixLookupDevice(&dev, stuff->grabbed_device, client, DixGrabAccess);
108    if (rc != Success)
109	return rc;
110    if (dev->button == NULL)
111	return BadMatch;
112
113    if (stuff->modifier_device != UseXKeyboard) {
114	rc = dixLookupDevice(&mdev, stuff->modifier_device, client,
115			     DixReadAccess);
116	if (rc != Success)
117	    return BadDevice;
118	if (mdev->key == NULL)
119	    return BadMatch;
120    } else
121	mdev = PickKeyboard(client);
122
123    rc = dixLookupWindow(&pWin, stuff->grabWindow, client, DixSetAttrAccess);
124    if (rc != Success)
125	return rc;
126
127    if ((stuff->modifiers != AnyModifier) &&
128	(stuff->modifiers & ~AllModifiersMask))
129	return BadValue;
130
131    temporaryGrab.resource = client->clientAsMask;
132    temporaryGrab.device = dev;
133    temporaryGrab.window = pWin;
134    temporaryGrab.type = DeviceButtonPress;
135    temporaryGrab.grabtype = GRABTYPE_XI;
136    temporaryGrab.modifierDevice = mdev;
137    temporaryGrab.modifiersDetail.exact = stuff->modifiers;
138    temporaryGrab.modifiersDetail.pMask = NULL;
139    temporaryGrab.detail.exact = stuff->button;
140    temporaryGrab.detail.pMask = NULL;
141
142    DeletePassiveGrabFromList(&temporaryGrab);
143    return Success;
144}
145