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 * Request to get the motion history from an extension 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 "exevents.h"
61 #include "exglobals.h"
62
63 #include "gtmotion.h"
64
65 /***********************************************************************
66 *
67 * Swap the request if server and client have different byte ordering.
68 *
69 */
70
71 int _X_COLD
SProcXGetDeviceMotionEvents(ClientPtr client)72 SProcXGetDeviceMotionEvents(ClientPtr client)
73 {
74 REQUEST(xGetDeviceMotionEventsReq);
75 swaps(&stuff->length);
76 REQUEST_SIZE_MATCH(xGetDeviceMotionEventsReq);
77 swapl(&stuff->start);
78 swapl(&stuff->stop);
79 return (ProcXGetDeviceMotionEvents(client));
80 }
81
82 /****************************************************************************
83 *
84 * Get the motion history for an extension pointer devices.
85 *
86 */
87
88 int
ProcXGetDeviceMotionEvents(ClientPtr client)89 ProcXGetDeviceMotionEvents(ClientPtr client)
90 {
91 INT32 *coords = NULL, *bufptr;
92 xGetDeviceMotionEventsReply rep;
93 unsigned long i;
94 int rc, num_events, axes, size = 0;
95 unsigned long nEvents;
96 DeviceIntPtr dev;
97 TimeStamp start, stop;
98 int length = 0;
99 ValuatorClassPtr v;
100
101 REQUEST(xGetDeviceMotionEventsReq);
102
103 REQUEST_SIZE_MATCH(xGetDeviceMotionEventsReq);
104 rc = dixLookupDevice(&dev, stuff->deviceid, client, DixReadAccess);
105 if (rc != Success)
106 return rc;
107 v = dev->valuator;
108 if (v == NULL || v->numAxes == 0)
109 return BadMatch;
110 if (dev->valuator->motionHintWindow)
111 MaybeStopDeviceHint(dev, client);
112 axes = v->numAxes;
113 rep = (xGetDeviceMotionEventsReply) {
114 .repType = X_Reply,
115 .RepType = X_GetDeviceMotionEvents,
116 .sequenceNumber = client->sequence,
117 .length = 0,
118 .nEvents = 0,
119 .axes = axes,
120 .mode = Absolute /* XXX we don't do relative at the moment */
121 };
122 start = ClientTimeToServerTime(stuff->start);
123 stop = ClientTimeToServerTime(stuff->stop);
124 if (CompareTimeStamps(start, stop) == LATER ||
125 CompareTimeStamps(start, currentTime) == LATER) {
126 WriteReplyToClient(client, sizeof(xGetDeviceMotionEventsReply), &rep);
127 return Success;
128 }
129 if (CompareTimeStamps(stop, currentTime) == LATER)
130 stop = currentTime;
131 num_events = v->numMotionEvents;
132 if (num_events) {
133 size = sizeof(Time) + (axes * sizeof(INT32));
134 rep.nEvents = GetMotionHistory(dev, (xTimecoord **) &coords, /* XXX */
135 start.milliseconds, stop.milliseconds,
136 (ScreenPtr) NULL, FALSE);
137 }
138 if (rep.nEvents > 0) {
139 length = bytes_to_int32(rep.nEvents * size);
140 rep.length = length;
141 }
142 nEvents = rep.nEvents;
143 WriteReplyToClient(client, sizeof(xGetDeviceMotionEventsReply), &rep);
144 if (nEvents) {
145 if (client->swapped) {
146 bufptr = coords;
147 for (i = 0; i < nEvents * (axes + 1); i++) {
148 swapl(bufptr);
149 bufptr++;
150 }
151 }
152 WriteToClient(client, length * 4, coords);
153 }
154 free(coords);
155 return Success;
156 }
157
158 /***********************************************************************
159 *
160 * This procedure writes the reply for the XGetDeviceMotionEvents function,
161 * if the client and server have a different byte ordering.
162 *
163 */
164
165 void _X_COLD
SRepXGetDeviceMotionEvents(ClientPtr client,int size,xGetDeviceMotionEventsReply * rep)166 SRepXGetDeviceMotionEvents(ClientPtr client, int size,
167 xGetDeviceMotionEventsReply * rep)
168 {
169 swaps(&rep->sequenceNumber);
170 swapl(&rep->length);
171 swapl(&rep->nEvents);
172 WriteToClient(client, size, rep);
173 }
174