1 /************************************************************
2
3 Copyright 1989, 1998 The Open Group
4
5 Permission to use, copy, modify, distribute, and sell this software and its
6 documentation for any purpose is hereby granted without fee, provided that
7 the above copyright notice appear in all copies and that both that
8 copyright notice and this permission notice appear in supporting
9 documentation.
10
11 The above copyright notice and this permission notice shall be included in
12 all copies or substantial portions of the Software.
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21 Except as contained in this notice, the name of The Open Group shall not be
22 used in advertising or otherwise to promote the sale, use or other dealings
23 in this Software without prior written authorization from The Open Group.
24
25 Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
26
27 All Rights Reserved
28
29 Permission to use, copy, modify, and distribute this software and its
30 documentation for any purpose and without fee is hereby granted,
31 provided that the above copyright notice appear in all copies and that
32 both that copyright notice and this permission notice appear in
33 supporting documentation, and that the name of Hewlett-Packard not be
34 used in advertising or publicity pertaining to distribution of the
35 software without specific, written prior permission.
36
37 HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39 HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43 SOFTWARE.
44
45 ********************************************************/
46
47 /***********************************************************************
48 *
49 * XGetDeviceKeyMapping - get the keymap of an extension device.
50 *
51 */
52
53 #ifdef HAVE_CONFIG_H
54 #include <config.h>
55 #endif
56
57 #include <limits.h>
58 #include <X11/extensions/XI.h>
59 #include <X11/extensions/XIproto.h>
60 #include <X11/Xlibint.h>
61 #include <X11/extensions/XInput.h>
62 #include <X11/extensions/extutil.h>
63 #include "XIint.h"
64
65 KeySym *
XGetDeviceKeyMapping(register Display * dpy,XDevice * dev,unsigned int first,int keycount,int * syms_per_code)66 XGetDeviceKeyMapping(register Display * dpy, XDevice * dev,
67 #if NeedWidePrototypes
68 unsigned int first,
69 #else
70 KeyCode first,
71 #endif
72 int keycount, int *syms_per_code)
73 {
74 long nbytes;
75 register KeySym *mapping = NULL;
76 xGetDeviceKeyMappingReq *req;
77 xGetDeviceKeyMappingReply rep;
78 XExtDisplayInfo *info = XInput_find_display(dpy);
79
80 LockDisplay(dpy);
81 if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
82 return NULL;
83
84 GetReq(GetDeviceKeyMapping, req);
85 req->reqType = info->codes->major_opcode;
86 req->ReqType = X_GetDeviceKeyMapping;
87 req->deviceid = dev->device_id;
88 req->firstKeyCode = first;
89 req->count = keycount;
90
91 if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
92 UnlockDisplay(dpy);
93 SyncHandle();
94 return (KeySym *) NULL;
95 }
96 if (rep.length > 0) {
97 if (rep.length < INT_MAX >> 2 &&
98 rep.length == rep.keySymsPerKeyCode * keycount) {
99 *syms_per_code = rep.keySymsPerKeyCode;
100 nbytes = (long)rep.length << 2;
101 mapping = (KeySym *) Xmalloc((unsigned)nbytes);
102 } else {
103 *syms_per_code = 0;
104 nbytes = 0;
105 mapping = NULL;
106 }
107 if (mapping)
108 _XRead(dpy, (char *)mapping, nbytes);
109 else
110 _XEatDataWords(dpy, rep.length);
111 }
112
113 UnlockDisplay(dpy);
114 SyncHandle();
115 return (mapping);
116 }
117