XIQueryVersion.c revision c27c18e8 
1/*
2 * Copyright © 2009 Red Hat, Inc.
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 */
24
25#include <stdint.h>
26#include <X11/Xlibint.h>
27#include <X11/extensions/XI2proto.h>
28#include <X11/extensions/XInput2.h>
29#include <X11/extensions/extutil.h>
30#include "XIint.h"
31
32Status
33XIQueryVersion(Display *dpy, int *major_inout, int *minor_inout)
34{
35    int rc = Success;
36
37    XExtDisplayInfo *info = XInput_find_display(dpy);
38
39    LockDisplay(dpy);
40    rc = _xiQueryVersion(dpy, major_inout, minor_inout, info);
41
42    UnlockDisplay(dpy);
43    SyncHandle();
44    return rc;
45}
46
47_X_HIDDEN Status
48_xiQueryVersion(Display * dpy, int *major, int *minor, XExtDisplayInfo *info)
49{
50    xXIQueryVersionReq *req;
51    xXIQueryVersionReply rep;
52
53    /* This could mean either a malloc problem, or supported
54        version < XInput_2_0 */
55    if (_XiCheckExtInit(dpy, XInput_2_0, info) == -1)
56    {
57        XExtensionVersion *ext;
58        XExtDisplayInfo *info = XInput_find_display(dpy);
59
60        if (!info || !info->data) {
61            *major = 0;
62            *minor = 0;
63            UnlockDisplay(dpy);
64            return BadRequest;
65        }
66
67        ext = ((XInputData*)info->data)->vers;
68
69        *major = ext->major_version;
70        *minor = ext->minor_version;
71	return BadRequest;
72    }
73
74    GetReq(XIQueryVersion, req);
75    req->reqType = info->codes->major_opcode;
76    req->ReqType = X_XIQueryVersion;
77    req->major_version = *major;
78    req->minor_version = *minor;
79
80    if (!_XReply(dpy, (xReply*)&rep, 0, xTrue)) {
81	return BadImplementation;
82    }
83    *major = rep.major_version;
84    *minor = rep.minor_version;
85    return Success;
86}
87