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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.Surface;
import android.view.WindowManagerPolicy;
public class InputDevice {
/** Amount that trackball needs to move in order to generate a key event. */
static final int TRACKBALL_MOVEMENT_THRESHOLD = 6;
final int id;
final int classes;
final String name;
final AbsoluteInfo absX;
final AbsoluteInfo absY;
final AbsoluteInfo absPressure;
final AbsoluteInfo absSize;
long mDownTime = 0;
int mMetaKeysState = 0;
final MotionState mAbs = new MotionState(0, 0);
final MotionState mRel = new MotionState(TRACKBALL_MOVEMENT_THRESHOLD,
TRACKBALL_MOVEMENT_THRESHOLD);
static class MotionState {
int xPrecision;
int yPrecision;
float xMoveScale;
float yMoveScale;
MotionEvent currentMove = null;
boolean changed = false;
boolean down = false;
boolean lastDown = false;
long downTime = 0;
int x = 0;
int y = 0;
int pressure = 1;
int size = 0;
MotionState(int mx, int my) {
xPrecision = mx;
yPrecision = my;
xMoveScale = mx != 0 ? (1.0f/mx) : 1.0f;
yMoveScale = my != 0 ? (1.0f/my) : 1.0f;
}
MotionEvent generateMotion(InputDevice device, long curTime,
boolean isAbs, Display display, int orientation,
int metaState) {
if (!changed) {
return null;
}
float scaledX = x;
float scaledY = y;
float temp;
float scaledPressure = 1.0f;
float scaledSize = 0;
if (isAbs) {
int w = display.getWidth()-1;
int h = display.getHeight()-1;
if (orientation == Surface.ROTATION_90
|| orientation == Surface.ROTATION_270) {
int tmp = w;
w = h;
h = tmp;
}
if (device.absX != null) {
scaledX = ((scaledX-device.absX.minValue)
/ device.absX.range) * w;
}
if (device.absY != null) {
scaledY = ((scaledY-device.absY.minValue)
/ device.absY.range) * h;
}
if (device.absPressure != null) {
scaledPressure =
((pressure-device.absPressure.minValue)
/ (float)device.absPressure.range);
}
if (device.absSize != null) {
scaledSize =
((size-device.absSize.minValue)
/ (float)device.absSize.range);
}
switch (orientation) {
case Surface.ROTATION_90:
temp = scaledX;
scaledX = scaledY;
scaledY = w-temp;
break;
case Surface.ROTATION_180:
scaledX = w-scaledX;
scaledY = h-scaledY;
break;
case Surface.ROTATION_270:
temp = scaledX;
scaledX = h-scaledY;
scaledY = temp;
break;
}
} else {
scaledX *= xMoveScale;
scaledY *= yMoveScale;
switch (orientation) {
case Surface.ROTATION_90:
temp = scaledX;
scaledX = scaledY;
scaledY = -temp;
break;
case Surface.ROTATION_180:
scaledX = -scaledX;
scaledY = -scaledY;
break;
case Surface.ROTATION_270:
temp = scaledX;
scaledX = -scaledY;
scaledY = temp;
break;
}
}
int edgeFlags = 0;
if (scaledX == 0) {
edgeFlags += MotionEvent.EDGE_LEFT;
} else if (scaledX == display.getWidth() - 1.0f) {
edgeFlags += MotionEvent.EDGE_RIGHT;
}
if (scaledY == 0) {
edgeFlags += MotionEvent.EDGE_TOP;
} else if (scaledY == display.getHeight() - 1.0f) {
edgeFlags += MotionEvent.EDGE_BOTTOM;
}
changed = false;
if (down != lastDown) {
int action;
lastDown = down;
if (down) {
action = MotionEvent.ACTION_DOWN;
downTime = curTime;
} else {
action = MotionEvent.ACTION_UP;
}
currentMove = null;
if (!isAbs) {
x = y = 0;
}
return MotionEvent.obtain(downTime, curTime, action,
scaledX, scaledY, scaledPressure, scaledSize, metaState,
xPrecision, yPrecision, device.id, edgeFlags);
} else {
if (currentMove != null) {
currentMove.addBatch(curTime, scaledX, scaledY,
scaledPressure, scaledSize, metaState);
if (WindowManagerPolicy.WATCH_POINTER) {
Log.i("KeyInputQueue", "Updating: " + currentMove);
}
return null;
}
MotionEvent me = MotionEvent.obtain(downTime, curTime,
MotionEvent.ACTION_MOVE, scaledX, scaledY,
scaledPressure, scaledSize, metaState,
xPrecision, yPrecision, device.id, edgeFlags);
currentMove = me;
return me;
}
}
}
static class AbsoluteInfo {
int minValue;
int maxValue;
int range;
int flat;
int fuzz;
};
InputDevice(int _id, int _classes, String _name,
AbsoluteInfo _absX, AbsoluteInfo _absY,
AbsoluteInfo _absPressure, AbsoluteInfo _absSize) {
id = _id;
classes = _classes;
name = _name;
absX = _absX;
absY = _absY;
absPressure = _absPressure;
absSize = _absSize;
}
};
|
