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