xisetclientpointer.c revision 6747b715 
1/*
2 * Copyright 2007-2008 Peter Hutterer
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Author: Peter Hutterer, University of South Australia, NICTA
24 */
25
26/***********************************************************************
27 *
28 * Request to set the client pointer for the owner of the given window.
29 * All subsequent calls that are ambiguous will choose the client pointer as
30 * default value.
31 */
32
33
34#ifdef HAVE_DIX_CONFIG_H
35#include <dix-config.h>
36#endif
37
38#include <X11/X.h>	/* for inputstr.h    */
39#include <X11/Xproto.h>	/* Request macro     */
40#include "inputstr.h"	/* DeviceIntPtr      */
41#include "windowstr.h"	/* window structure  */
42#include "scrnintstr.h"	/* screen structure  */
43#include <X11/extensions/XI.h>
44#include <X11/extensions/XI2proto.h>
45#include "extnsionst.h"
46#include "exevents.h"
47#include "exglobals.h"
48
49#include "xisetclientpointer.h"
50
51int
52SProcXISetClientPointer(ClientPtr client)
53{
54    char n;
55
56    REQUEST(xXISetClientPointerReq);
57    swaps(&stuff->length, n);
58    swapl(&stuff->win, n);
59    swaps(&stuff->deviceid, n);
60    REQUEST_SIZE_MATCH(xXISetClientPointerReq);
61    return (ProcXISetClientPointer(client));
62}
63
64int
65ProcXISetClientPointer(ClientPtr client)
66{
67    DeviceIntPtr pDev;
68    ClientPtr targetClient;
69    int rc;
70
71    REQUEST(xXISetClientPointerReq);
72    REQUEST_SIZE_MATCH(xXISetClientPointerReq);
73
74
75    rc = dixLookupDevice(&pDev, stuff->deviceid, client, DixManageAccess);
76    if (rc != Success)
77    {
78        client->errorValue = stuff->deviceid;
79        return rc;
80    }
81
82    if (!IsMaster(pDev))
83    {
84        client->errorValue = stuff->deviceid;
85        return BadDevice;
86    }
87
88    pDev = GetMaster(pDev, MASTER_POINTER);
89
90    if (stuff->win != None)
91    {
92        rc = dixLookupClient(&targetClient, stuff->win, client,
93                DixManageAccess);
94
95        if (rc != Success)
96            return BadWindow;
97
98    } else
99        targetClient = client;
100
101    rc = SetClientPointer(targetClient, pDev);
102    if (rc != Success)
103    {
104        client->errorValue = stuff->deviceid;
105        return rc;
106    }
107
108    return Success;
109}
110