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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 #if HAVE_CONFIG_H
     26 #include <config.h>
     27 #endif
     28 
     29 #include <stdint.h>
     30 #include <X11/Xlibint.h>
     31 #include <X11/extensions/XI2proto.h>
     32 #include <X11/extensions/XInput2.h>
     33 #include <X11/extensions/extutil.h>
     34 #include "XIint.h"
     35 
     36 /* for GetRequest() to work */
     37 #define X_XI2_2AllowEvents X_XIAllowEvents
     38 
     39 static Status
     40 _XIAllowEvents(Display *dpy, int deviceid, int event_mode, Time time,
     41                     unsigned int touchid, Window grab_window)
     42 {
     43     Bool have_XI22 = False;
     44     xXIAllowEventsReq *req;
     45     xXI2_2AllowEventsReq *req_XI22;
     46 
     47     XExtDisplayInfo *extinfo = XInput_find_display(dpy);
     48 
     49     LockDisplay(dpy);
     50     if (_XiCheckExtInit(dpy, XInput_2_0, extinfo) == -1)
     51 	return (NoSuchExtension);
     52 
     53     if (_XiCheckVersion(extinfo, XInput_2_2) >= 0)
     54         have_XI22 = True;
     55 
     56     if (have_XI22)
     57     {
     58         GetReq(XI2_2AllowEvents, req_XI22);
     59         req = (xXIAllowEventsReq*)req_XI22;
     60     } else
     61         GetReq(XIAllowEvents, req);
     62 
     63     req->reqType = extinfo->codes->major_opcode;
     64     req->ReqType = X_XIAllowEvents;
     65     req->deviceid = deviceid;
     66     req->mode = event_mode;
     67     req->time = time;
     68 
     69     if (have_XI22) {
     70         req_XI22->touchid = touchid;
     71         req_XI22->grab_window = grab_window;
     72     }
     73 
     74     UnlockDisplay(dpy);
     75     SyncHandle();
     76     return Success;
     77 }
     78 
     79 Status
     80 XIAllowEvents(Display *dpy, int deviceid, int event_mode, Time time)
     81 {
     82     return _XIAllowEvents(dpy, deviceid, event_mode, time, 0, None);
     83 }
     84 
     85 Status
     86 XIAllowTouchEvents(Display *dpy, int deviceid, unsigned int touchid,
     87                    Window grab_window, int event_mode)
     88 {
     89     XExtDisplayInfo *extinfo = XInput_find_display(dpy);
     90 
     91     LockDisplay(dpy);
     92     if (_XiCheckExtInit(dpy, XInput_2_2, extinfo) == -1)
     93 	return (NoSuchExtension);
     94     UnlockDisplay(dpy);
     95 
     96     return _XIAllowEvents(dpy, deviceid, event_mode, CurrentTime, touchid, grab_window);
     97 }
     98