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      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 
     26 #if HAVE_CONFIG_H
     27 #include <config.h>
     28 #endif
     29 
     30 #include <stdint.h>
     31 #include <X11/Xlibint.h>
     32 #include <X11/extensions/XI2proto.h>
     33 #include <X11/extensions/XInput2.h>
     34 #include <X11/extensions/extutil.h>
     35 #include "XIint.h"
     36 
     37 Status
     38 XIQueryVersion(Display *dpy, int *major_inout, int *minor_inout)
     39 {
     40     int rc = Success;
     41 
     42     XExtDisplayInfo *info = XInput_find_display(dpy);
     43 
     44     rc = _xiQueryVersion(dpy, major_inout, minor_inout, info);
     45 
     46     SyncHandle();
     47     return rc;
     48 }
     49 
     50 _X_HIDDEN Status
     51 _xiQueryVersion(Display * dpy, int *major, int *minor, XExtDisplayInfo *info)
     52 {
     53     xXIQueryVersionReq *req;
     54     xXIQueryVersionReply rep;
     55 
     56     LockDisplay(dpy);
     57 
     58     /* This could mean either a malloc problem, or supported
     59         version < XInput_2_0 */
     60     if (_XiCheckExtInit(dpy, XInput_2_0, info) == -1)
     61     {
     62         XExtensionVersion *ext;
     63         XExtDisplayInfo *extinfo = XInput_find_display(dpy);
     64 
     65         if (!extinfo || !extinfo->data) {
     66             *major = 0;
     67             *minor = 0;
     68             return BadRequest;
     69         }
     70 
     71         ext = ((XInputData*)extinfo->data)->vers;
     72 
     73         *major = ext->major_version;
     74         *minor = ext->minor_version;
     75 	return BadRequest;
     76     }
     77 
     78     GetReq(XIQueryVersion, req);
     79     req->reqType = info->codes->major_opcode;
     80     req->ReqType = X_XIQueryVersion;
     81     req->major_version = *major;
     82     req->minor_version = *minor;
     83 
     84     if (!_XReply(dpy, (xReply*)&rep, 0, xTrue)) {
     85         UnlockDisplay(dpy);
     86 	return BadImplementation;
     87     }
     88 
     89     *major = rep.major_version;
     90     *minor = rep.minor_version;
     91 
     92     UnlockDisplay(dpy);
     93     return Success;
     94 }
     95