1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Copyright 2002-2003 Red Hat Inc., Durham, North Carolina.
*
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation on the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* Authors:
* Rickard E. (Rik) Faith <faith@redhat.com>
*
*/
/** \file
* This file provides functions similar to miPointerGetMotionEvents and
* miPointerPutMotionEvents, with the exception that devices with more
* than two axes are fully supported. These routines may be used only
* for motion buffers for extension devices, and are \a not compatible
* replacements for the mi routines. */
#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif
#include "inputstr.h"
#include "dmxinputinit.h"
#include "dmxcommon.h"
#include "dmxmotion.h"
#define OFFSET(offset,element) ((offset) * (numAxes + 1) + (element))
/** Return size of motion buffer. \see DMX_MOTION_SIZE */
int dmxPointerGetMotionBufferSize(void)
{
return DMX_MOTION_SIZE;
}
/** This routine performs the same function as \a miPointerGetMotionEvents:
* the events in the motion history that are between the start and stop
* times (in mS) are placed in the coords vector, and the count of the
* number of items so placed is returned. This routine is called from
* dix/devices.c so that coords can hold valuator->numMotionEvents
* events. This routine is called from \a Xi/gtmotion.c with coords large
* enough to hold the same number of events in a variable-length
* extended \a xTimecoord structure. This provides sufficient data for the
* \a XGetDeviceMotionEvents library call, and would be identical to
* \a miPointerGetMotionEvents for devices with only 2 axes (i.e., core
* pointers) if \a xTimecoord used 32bit integers.
*
* Because DMX uses the mi* routines for all core devices, this routine
* only has to support extension devices using the polymorphic coords.
* Because compatibility with miPointerGetMotionEvents is not possible,
* it is not provided. */
int dmxPointerGetMotionEvents(DeviceIntPtr pDevice,
xTimecoord *coords,
unsigned long start,
unsigned long stop,
ScreenPtr pScreen)
{
GETDMXLOCALFROMPDEVICE;
int numAxes = pDevice->valuator->numAxes;
unsigned long *c = (unsigned long *)coords;
int count = 0;
int i, j;
if (!dmxLocal->history) return 0;
for (i = dmxLocal->head; i != dmxLocal->tail;) {
if (dmxLocal->history[OFFSET(i,0)] >= stop) break;
if (dmxLocal->history[OFFSET(i,0)] >= start) {
for (j = 0; j < numAxes + 1; j++)
c[OFFSET(count,j)] = dmxLocal->history[OFFSET(i,j)];
++count;
}
if (++i >= DMX_MOTION_SIZE) i = 0;
}
return count;
}
/** This routine adds an event to the motion history. A similar
* function is performed by miPointerMove for the mi versions of these
* routines. */
void dmxPointerPutMotionEvent(DeviceIntPtr pDevice,
int firstAxis, int axesCount, int *v,
unsigned long time)
{
GETDMXLOCALFROMPDEVICE;
int numAxes = pDevice->valuator->numAxes;
int i;
if (!dmxLocal->history) {
dmxLocal->history = malloc(sizeof(*dmxLocal->history)
* (numAxes + 1)
* DMX_MOTION_SIZE);
dmxLocal->head = 0;
dmxLocal->tail = 0;
dmxLocal->valuators = calloc(sizeof(*dmxLocal->valuators), numAxes);
} else {
if (++dmxLocal->tail >= DMX_MOTION_SIZE) dmxLocal->tail = 0;
if (dmxLocal->head == dmxLocal->tail)
if (++dmxLocal->head >= DMX_MOTION_SIZE) dmxLocal->head = 0;
}
dmxLocal->history[OFFSET(dmxLocal->tail,0)] = time;
/* Initialize the data from the known
* values (if Absolute) or to zero (if
* Relative) */
if (pDevice->valuator->mode == Absolute) {
for (i = 0; i < numAxes; i++)
dmxLocal->history[OFFSET(dmxLocal->tail,i+1)]
= dmxLocal->valuators[i];
} else {
for (i = 0; i < numAxes; i++)
dmxLocal->history[OFFSET(dmxLocal->tail,i+1)] = 0;
}
for (i = firstAxis; i < axesCount; i++) {
dmxLocal->history[OFFSET(dmxLocal->tail,i+i)]
= (unsigned long)v[i-firstAxis];
dmxLocal->valuators[i] = v[i-firstAxis];
}
}
|
