devbell.c revision 706f2543 
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 change the keyboard 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 <X11/extensions/XI.h>
59#include <X11/extensions/XIproto.h>
60#include "exglobals.h"
61
62#include "devbell.h"
63
64/***********************************************************************
65 *
66 * This procedure is invoked to swap the request bytes if the server and
67 * client have a different byte order.
68 *
69 */
70
71int
72SProcXDeviceBell(ClientPtr client)
73{
74    char n;
75
76    REQUEST(xDeviceBellReq);
77    swaps(&stuff->length, n);
78    return (ProcXDeviceBell(client));
79}
80
81/***********************************************************************
82 *
83 * This procedure rings a bell on an extension device.
84 *
85 */
86
87int
88ProcXDeviceBell(ClientPtr client)
89{
90    DeviceIntPtr dev;
91    KbdFeedbackPtr k;
92    BellFeedbackPtr b;
93    int rc, base;
94    int newpercent;
95    CARD8 class;
96    pointer ctrl;
97    BellProcPtr proc;
98
99    REQUEST(xDeviceBellReq);
100    REQUEST_SIZE_MATCH(xDeviceBellReq);
101
102    rc = dixLookupDevice(&dev, stuff->deviceid, client, DixBellAccess);
103    if (rc != Success) {
104	client->errorValue = stuff->deviceid;
105	return rc;
106    }
107
108    if (stuff->percent < -100 || stuff->percent > 100) {
109	client->errorValue = stuff->percent;
110	return BadValue;
111    }
112    if (stuff->feedbackclass == KbdFeedbackClass) {
113	for (k = dev->kbdfeed; k; k = k->next)
114	    if (k->ctrl.id == stuff->feedbackid)
115		break;
116	if (!k) {
117	    client->errorValue = stuff->feedbackid;
118	    return BadValue;
119	}
120	base = k->ctrl.bell;
121	proc = k->BellProc;
122	ctrl = (pointer) & (k->ctrl);
123	class = KbdFeedbackClass;
124    } else if (stuff->feedbackclass == BellFeedbackClass) {
125	for (b = dev->bell; b; b = b->next)
126	    if (b->ctrl.id == stuff->feedbackid)
127		break;
128	if (!b) {
129	    client->errorValue = stuff->feedbackid;
130	    return BadValue;
131	}
132	base = b->ctrl.percent;
133	proc = b->BellProc;
134	ctrl = (pointer) & (b->ctrl);
135	class = BellFeedbackClass;
136    } else {
137	client->errorValue = stuff->feedbackclass;
138	return BadValue;
139    }
140    newpercent = (base * stuff->percent) / 100;
141    if (stuff->percent < 0)
142	newpercent = base + newpercent;
143    else
144	newpercent = base - newpercent + stuff->percent;
145    (*proc) (newpercent, dev, ctrl, class);
146
147    return Success;
148}
149