getfocus.c revision 05b261ec 
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 * Extension function to get the focus for 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 <X11/X.h>	/* for inputstr.h    */
60#include <X11/Xproto.h>	/* Request macro     */
61#include "windowstr.h"	/* focus struct      */
62#include "inputstr.h"	/* DeviceIntPtr      */
63#include <X11/extensions/XI.h>
64#include <X11/extensions/XIproto.h>
65#include "extnsionst.h"
66#include "extinit.h"	/* LookupDeviceIntRec */
67#include "exglobals.h"
68
69#include "getfocus.h"
70
71/***********************************************************************
72 *
73 * This procedure gets the focus for a device.
74 *
75 */
76
77int
78SProcXGetDeviceFocus(ClientPtr client)
79{
80    char n;
81
82    REQUEST(xGetDeviceFocusReq);
83    swaps(&stuff->length, n);
84    return (ProcXGetDeviceFocus(client));
85}
86
87/***********************************************************************
88 *
89 * This procedure gets the focus for a device.
90 *
91 */
92
93int
94ProcXGetDeviceFocus(ClientPtr client)
95{
96    DeviceIntPtr dev;
97    FocusClassPtr focus;
98    xGetDeviceFocusReply rep;
99
100    REQUEST(xGetDeviceFocusReq);
101    REQUEST_SIZE_MATCH(xGetDeviceFocusReq);
102
103    dev = LookupDeviceIntRec(stuff->deviceid);
104    if (dev == NULL || !dev->focus) {
105	SendErrorToClient(client, IReqCode, X_GetDeviceFocus, 0, BadDevice);
106	return Success;
107    }
108
109    rep.repType = X_Reply;
110    rep.RepType = X_GetDeviceFocus;
111    rep.length = 0;
112    rep.sequenceNumber = client->sequence;
113
114    focus = dev->focus;
115
116    if (focus->win == NoneWin)
117	rep.focus = None;
118    else if (focus->win == PointerRootWin)
119	rep.focus = PointerRoot;
120    else if (focus->win == FollowKeyboardWin)
121	rep.focus = FollowKeyboard;
122    else
123	rep.focus = focus->win->drawable.id;
124
125    rep.time = focus->time.milliseconds;
126    rep.revertTo = focus->revert;
127    WriteReplyToClient(client, sizeof(xGetDeviceFocusReply), &rep);
128    return Success;
129}
130
131/***********************************************************************
132 *
133 * This procedure writes the reply for the GetDeviceFocus function,
134 * if the client and server have a different byte ordering.
135 *
136 */
137
138void
139SRepXGetDeviceFocus(ClientPtr client, int size, xGetDeviceFocusReply * rep)
140{
141    char n;
142
143    swaps(&rep->sequenceNumber, n);
144    swapl(&rep->length, n);
145    swapl(&rep->focus, n);
146    swapl(&rep->time, n);
147    WriteToClient(client, size, (char *)rep);
148}
149