The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
| 19 | import android.util.Log; |
| 20 | import android.view.Display; |
| 21 | import android.view.MotionEvent; |
| 22 | import android.view.Surface; |
| 23 | import android.view.WindowManagerPolicy; |
| 24 | |
| 25 | public class InputDevice { |
| 26 | /** Amount that trackball needs to move in order to generate a key event. */ |
| 27 | static final int TRACKBALL_MOVEMENT_THRESHOLD = 6; |
| 28 | |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 29 | /** Maximum number of pointers we will track and report. */ |
| 30 | static final int MAX_POINTERS = 2; |
| 31 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | final int id; |
| 33 | final int classes; |
| 34 | final String name; |
| 35 | final AbsoluteInfo absX; |
| 36 | final AbsoluteInfo absY; |
| 37 | final AbsoluteInfo absPressure; |
| 38 | final AbsoluteInfo absSize; |
| 39 | |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 40 | long mKeyDownTime = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | int mMetaKeysState = 0; |
| 42 | |
| 43 | final MotionState mAbs = new MotionState(0, 0); |
| 44 | final MotionState mRel = new MotionState(TRACKBALL_MOVEMENT_THRESHOLD, |
| 45 | TRACKBALL_MOVEMENT_THRESHOLD); |
| 46 | |
| 47 | static class MotionState { |
| 48 | int xPrecision; |
| 49 | int yPrecision; |
| 50 | float xMoveScale; |
| 51 | float yMoveScale; |
| 52 | MotionEvent currentMove = null; |
| 53 | boolean changed = false; |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 54 | boolean mLastAnyDown = false; |
| 55 | long mDownTime = 0; |
| 56 | final boolean[] mLastDown = new boolean[MAX_POINTERS]; |
| 57 | final boolean[] mDown = new boolean[MAX_POINTERS]; |
| 58 | final int[] mLastData = new int[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS]; |
| 59 | final int[] mCurData = new int[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS]; |
| 60 | final float[] mReportData = new float[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 61 | |
| 62 | MotionState(int mx, int my) { |
| 63 | xPrecision = mx; |
| 64 | yPrecision = my; |
| 65 | xMoveScale = mx != 0 ? (1.0f/mx) : 1.0f; |
| 66 | yMoveScale = my != 0 ? (1.0f/my) : 1.0f; |
| 67 | } |
| 68 | |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 69 | MotionEvent generateAbsMotion(InputDevice device, long curTime, |
| 70 | long curTimeNano, Display display, int orientation, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 71 | int metaState) { |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 72 | |
| 73 | final float[] scaled = mReportData; |
| 74 | final int[] cur = mCurData; |
| 75 | |
| 76 | boolean anyDown = false; |
| 77 | int firstDownChanged = -1; |
| 78 | int numPointers = 0; |
| 79 | for (int i=0; i<MAX_POINTERS; i++) { |
| 80 | boolean d = mDown[i]; |
| 81 | anyDown |= d; |
| 82 | if (d != mLastDown[i] && firstDownChanged < 0) { |
| 83 | firstDownChanged = i; |
| 84 | mLastDown[i] = mDown[i]; |
| 85 | d = true; |
| 86 | } |
| 87 | |
| 88 | if (d) { |
| 89 | final int src = i * MotionEvent.NUM_SAMPLE_DATA; |
| 90 | final int dest = numPointers * MotionEvent.NUM_SAMPLE_DATA; |
| 91 | numPointers++; |
| 92 | scaled[dest + MotionEvent.SAMPLE_X] = cur[src + MotionEvent.SAMPLE_X]; |
| 93 | scaled[dest + MotionEvent.SAMPLE_Y] = cur[src + MotionEvent.SAMPLE_Y]; |
| 94 | scaled[dest + MotionEvent.SAMPLE_PRESSURE] = cur[src + MotionEvent.SAMPLE_PRESSURE]; |
| 95 | scaled[dest + MotionEvent.SAMPLE_SIZE] = cur[src + MotionEvent.SAMPLE_SIZE]; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | if (numPointers <= 0) { |
| 100 | return null; |
| 101 | } |
| 102 | |
| 103 | int action; |
| 104 | int edgeFlags = 0; |
| 105 | if (anyDown != mLastAnyDown) { |
| 106 | final AbsoluteInfo absX = device.absX; |
| 107 | final AbsoluteInfo absY = device.absY; |
| 108 | if (anyDown && absX != null && absY != null) { |
| 109 | // We don't let downs start unless we are |
| 110 | // inside of the screen. There are two reasons for |
| 111 | // this: to avoid spurious touches when holding |
| 112 | // the edges of the device near the touchscreen, |
| 113 | // and to avoid reporting events if there are virtual |
| 114 | // keys on the touchscreen outside of the display |
| 115 | // area. |
| 116 | // Note that we are only looking at the first pointer, |
| 117 | // since what we are handling here is the first pointer |
| 118 | // going down, and this is the coordinate that will be |
| 119 | // used to dispatch the event. |
| 120 | if (cur[MotionEvent.SAMPLE_X] < absX.minValue |
| 121 | || cur[MotionEvent.SAMPLE_X] > absX.maxValue |
| 122 | || cur[MotionEvent.SAMPLE_Y] < absY.minValue |
| 123 | || cur[MotionEvent.SAMPLE_Y] > absY.maxValue) { |
| 124 | if (false) Log.v("InputDevice", "Rejecting (" |
| 125 | + cur[MotionEvent.SAMPLE_X] + "," |
| 126 | + cur[MotionEvent.SAMPLE_Y] + "): outside of (" |
| 127 | + absX.minValue + "," + absY.minValue |
| 128 | + ")-(" + absX.maxValue + "," |
| 129 | + absY.maxValue + ")"); |
| 130 | return null; |
| 131 | } |
| 132 | } |
| 133 | mLastAnyDown = anyDown; |
| 134 | if (anyDown) { |
| 135 | action = MotionEvent.ACTION_DOWN; |
| 136 | mDownTime = curTime; |
| 137 | } else { |
| 138 | action = MotionEvent.ACTION_UP; |
| 139 | } |
| 140 | currentMove = null; |
| 141 | } else if (firstDownChanged >= 0) { |
| 142 | if (mDown[firstDownChanged]) { |
| 143 | action = MotionEvent.ACTION_POINTER_DOWN |
| 144 | | (firstDownChanged << MotionEvent.ACTION_POINTER_SHIFT); |
| 145 | } else { |
| 146 | action = MotionEvent.ACTION_POINTER_UP |
| 147 | | (firstDownChanged << MotionEvent.ACTION_POINTER_SHIFT); |
| 148 | } |
| 149 | currentMove = null; |
| 150 | } else { |
| 151 | action = MotionEvent.ACTION_MOVE; |
| 152 | } |
| 153 | |
| 154 | final int dispW = display.getWidth()-1; |
| 155 | final int dispH = display.getHeight()-1; |
| 156 | int w = dispW; |
| 157 | int h = dispH; |
| 158 | if (orientation == Surface.ROTATION_90 |
| 159 | || orientation == Surface.ROTATION_270) { |
| 160 | int tmp = w; |
| 161 | w = h; |
| 162 | h = tmp; |
| 163 | } |
| 164 | |
| 165 | final AbsoluteInfo absX = device.absX; |
| 166 | final AbsoluteInfo absY = device.absY; |
| 167 | final AbsoluteInfo absPressure = device.absPressure; |
| 168 | final AbsoluteInfo absSize = device.absSize; |
| 169 | for (int i=0; i<numPointers; i++) { |
| 170 | final int j = i * MotionEvent.NUM_SAMPLE_DATA; |
| 171 | |
| 172 | if (absX != null) { |
| 173 | scaled[j + MotionEvent.SAMPLE_X] = |
| 174 | ((scaled[j + MotionEvent.SAMPLE_X]-absX.minValue) |
| 175 | / absX.range) * w; |
| 176 | } |
| 177 | if (absY != null) { |
| 178 | scaled[j + MotionEvent.SAMPLE_Y] = |
| 179 | ((scaled[j + MotionEvent.SAMPLE_Y]-absY.minValue) |
| 180 | / absY.range) * h; |
| 181 | } |
| 182 | if (absPressure != null) { |
| 183 | scaled[j + MotionEvent.SAMPLE_PRESSURE] = |
| 184 | ((scaled[j + MotionEvent.SAMPLE_PRESSURE]-absPressure.minValue) |
| 185 | / (float)absPressure.range); |
| 186 | } |
| 187 | if (absSize != null) { |
| 188 | scaled[j + MotionEvent.SAMPLE_SIZE] = |
| 189 | ((scaled[j + MotionEvent.SAMPLE_SIZE]-absSize.minValue) |
| 190 | / (float)absSize.range); |
| 191 | } |
| 192 | |
| 193 | switch (orientation) { |
| 194 | case Surface.ROTATION_90: { |
| 195 | final float temp = scaled[MotionEvent.SAMPLE_X]; |
| 196 | scaled[j + MotionEvent.SAMPLE_X] = scaled[j + MotionEvent.SAMPLE_Y]; |
| 197 | scaled[j + MotionEvent.SAMPLE_Y] = w-temp; |
| 198 | break; |
| 199 | } |
| 200 | case Surface.ROTATION_180: { |
| 201 | scaled[j + MotionEvent.SAMPLE_X] = w-scaled[j + MotionEvent.SAMPLE_X]; |
| 202 | scaled[j + MotionEvent.SAMPLE_Y] = h-scaled[j + MotionEvent.SAMPLE_Y]; |
| 203 | break; |
| 204 | } |
| 205 | case Surface.ROTATION_270: { |
| 206 | final float temp = scaled[i + MotionEvent.SAMPLE_X]; |
| 207 | scaled[j + MotionEvent.SAMPLE_X] = h-scaled[j + MotionEvent.SAMPLE_Y]; |
| 208 | scaled[j + MotionEvent.SAMPLE_Y] = temp; |
| 209 | break; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | // We only consider the first pointer when computing the edge |
| 215 | // flags, since they are global to the event. |
| 216 | if (action != MotionEvent.ACTION_DOWN) { |
| 217 | if (scaled[MotionEvent.SAMPLE_X] <= 0) { |
| 218 | edgeFlags |= MotionEvent.EDGE_LEFT; |
| 219 | } else if (scaled[MotionEvent.SAMPLE_X] >= dispW) { |
| 220 | edgeFlags |= MotionEvent.EDGE_RIGHT; |
| 221 | } |
| 222 | if (scaled[MotionEvent.SAMPLE_Y] <= 0) { |
| 223 | edgeFlags |= MotionEvent.EDGE_TOP; |
| 224 | } else if (scaled[MotionEvent.SAMPLE_Y] >= dispH) { |
| 225 | edgeFlags |= MotionEvent.EDGE_BOTTOM; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | if (currentMove != null) { |
| 230 | if (false) Log.i("InputDevice", "Adding batch x=" |
| 231 | + scaled[MotionEvent.SAMPLE_X] |
| 232 | + " y=" + scaled[MotionEvent.SAMPLE_Y] |
| 233 | + " to " + currentMove); |
| 234 | currentMove.addBatch(curTime, scaled, metaState); |
| 235 | if (WindowManagerPolicy.WATCH_POINTER) { |
| 236 | Log.i("KeyInputQueue", "Updating: " + currentMove); |
| 237 | } |
| 238 | return null; |
| 239 | } |
| 240 | |
| 241 | MotionEvent me = MotionEvent.obtainNano(mDownTime, curTime, |
| 242 | curTimeNano, action, numPointers, scaled, metaState, |
| 243 | xPrecision, yPrecision, device.id, edgeFlags); |
| 244 | if (action == MotionEvent.ACTION_MOVE) { |
| 245 | currentMove = me; |
| 246 | } |
| 247 | return me; |
| 248 | } |
| 249 | |
| 250 | MotionEvent generateRelMotion(InputDevice device, long curTime, |
| 251 | long curTimeNano, int orientation, int metaState) { |
| 252 | |
| 253 | final float[] scaled = mReportData; |
| 254 | |
| 255 | // For now we only support 1 pointer with relative motions. |
| 256 | scaled[MotionEvent.SAMPLE_X] = mCurData[MotionEvent.SAMPLE_X]; |
| 257 | scaled[MotionEvent.SAMPLE_Y] = mCurData[MotionEvent.SAMPLE_Y]; |
| 258 | scaled[MotionEvent.SAMPLE_PRESSURE] = 1.0f; |
| 259 | scaled[MotionEvent.SAMPLE_SIZE] = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 260 | int edgeFlags = 0; |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 261 | |
| 262 | int action; |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 263 | if (mDown[0] != mLastDown[0]) { |
| 264 | mCurData[MotionEvent.SAMPLE_X] = |
| 265 | mCurData[MotionEvent.SAMPLE_Y] = 0; |
| 266 | mLastDown[0] = mDown[0]; |
| 267 | if (mDown[0]) { |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 268 | action = MotionEvent.ACTION_DOWN; |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 269 | mDownTime = curTime; |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 270 | } else { |
| 271 | action = MotionEvent.ACTION_UP; |
| 272 | } |
| 273 | currentMove = null; |
| 274 | } else { |
| 275 | action = MotionEvent.ACTION_MOVE; |
| 276 | } |
| 277 | |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 278 | scaled[MotionEvent.SAMPLE_X] *= xMoveScale; |
| 279 | scaled[MotionEvent.SAMPLE_Y] *= yMoveScale; |
| 280 | switch (orientation) { |
| 281 | case Surface.ROTATION_90: { |
| 282 | final float temp = scaled[MotionEvent.SAMPLE_X]; |
| 283 | scaled[MotionEvent.SAMPLE_X] = scaled[MotionEvent.SAMPLE_Y]; |
| 284 | scaled[MotionEvent.SAMPLE_Y] = -temp; |
| 285 | break; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 286 | } |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 287 | case Surface.ROTATION_180: { |
| 288 | scaled[MotionEvent.SAMPLE_X] = -scaled[MotionEvent.SAMPLE_X]; |
| 289 | scaled[MotionEvent.SAMPLE_Y] = -scaled[MotionEvent.SAMPLE_Y]; |
| 290 | break; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 291 | } |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 292 | case Surface.ROTATION_270: { |
| 293 | final float temp = scaled[MotionEvent.SAMPLE_X]; |
| 294 | scaled[MotionEvent.SAMPLE_X] = -scaled[MotionEvent.SAMPLE_Y]; |
| 295 | scaled[MotionEvent.SAMPLE_Y] = temp; |
| 296 | break; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 300 | if (currentMove != null) { |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 301 | if (false) Log.i("InputDevice", "Adding batch x=" |
| 302 | + scaled[MotionEvent.SAMPLE_X] |
| 303 | + " y=" + scaled[MotionEvent.SAMPLE_Y] |
| 304 | + " to " + currentMove); |
| 305 | currentMove.addBatch(curTime, scaled, metaState); |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 306 | if (WindowManagerPolicy.WATCH_POINTER) { |
| 307 | Log.i("KeyInputQueue", "Updating: " + currentMove); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 308 | } |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 309 | return null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 310 | } |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 311 | |
Dianne Hackborn | 9822d2b | 2009-07-20 17:33:15 -0700 | [diff] [blame^] | 312 | MotionEvent me = MotionEvent.obtainNano(mDownTime, curTime, |
| 313 | curTimeNano, action, 1, scaled, metaState, |
Dianne Hackborn | e3dd884 | 2009-07-14 12:06:54 -0700 | [diff] [blame] | 314 | xPrecision, yPrecision, device.id, edgeFlags); |
| 315 | if (action == MotionEvent.ACTION_MOVE) { |
| 316 | currentMove = me; |
| 317 | } |
| 318 | return me; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 319 | } |
| 320 | } |
| 321 | |
| 322 | static class AbsoluteInfo { |
| 323 | int minValue; |
| 324 | int maxValue; |
| 325 | int range; |
| 326 | int flat; |
| 327 | int fuzz; |
| 328 | }; |
| 329 | |
| 330 | InputDevice(int _id, int _classes, String _name, |
| 331 | AbsoluteInfo _absX, AbsoluteInfo _absY, |
| 332 | AbsoluteInfo _absPressure, AbsoluteInfo _absSize) { |
| 333 | id = _id; |
| 334 | classes = _classes; |
| 335 | name = _name; |
| 336 | absX = _absX; |
| 337 | absY = _absY; |
| 338 | absPressure = _absPressure; |
| 339 | absSize = _absSize; |
| 340 | } |
| 341 | }; |