InputReader.cpp revision a4d1bc517207d7ca8d56f0004cd04f0f1dd4567d
1/* 2 * Copyright (C) 2010 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#define LOG_TAG "InputReader" 18 19//#define LOG_NDEBUG 0 20 21// Log debug messages for each raw event received from the EventHub. 22#define DEBUG_RAW_EVENTS 0 23 24// Log debug messages about touch screen filtering hacks. 25#define DEBUG_HACKS 0 26 27// Log debug messages about virtual key processing. 28#define DEBUG_VIRTUAL_KEYS 0 29 30// Log debug messages about pointers. 31#define DEBUG_POINTERS 0 32 33// Log debug messages about pointer assignment calculations. 34#define DEBUG_POINTER_ASSIGNMENT 0 35 36// Log debug messages about gesture detection. 37#define DEBUG_GESTURES 0 38 39#include "InputReader.h" 40 41#include <cutils/log.h> 42#include <ui/Keyboard.h> 43#include <ui/VirtualKeyMap.h> 44 45#include <stddef.h> 46#include <stdlib.h> 47#include <unistd.h> 48#include <errno.h> 49#include <limits.h> 50#include <math.h> 51 52#define INDENT " " 53#define INDENT2 " " 54#define INDENT3 " " 55#define INDENT4 " " 56#define INDENT5 " " 57 58namespace android { 59 60// --- Constants --- 61 62// Maximum number of slots supported when using the slot-based Multitouch Protocol B. 63static const size_t MAX_SLOTS = 32; 64 65// --- Static Functions --- 66 67template<typename T> 68inline static T abs(const T& value) { 69 return value < 0 ? - value : value; 70} 71 72template<typename T> 73inline static T min(const T& a, const T& b) { 74 return a < b ? a : b; 75} 76 77template<typename T> 78inline static void swap(T& a, T& b) { 79 T temp = a; 80 a = b; 81 b = temp; 82} 83 84inline static float avg(float x, float y) { 85 return (x + y) / 2; 86} 87 88inline static float distance(float x1, float y1, float x2, float y2) { 89 return hypotf(x1 - x2, y1 - y2); 90} 91 92inline static int32_t signExtendNybble(int32_t value) { 93 return value >= 8 ? value - 16 : value; 94} 95 96static inline const char* toString(bool value) { 97 return value ? "true" : "false"; 98} 99 100static int32_t rotateValueUsingRotationMap(int32_t value, int32_t orientation, 101 const int32_t map[][4], size_t mapSize) { 102 if (orientation != DISPLAY_ORIENTATION_0) { 103 for (size_t i = 0; i < mapSize; i++) { 104 if (value == map[i][0]) { 105 return map[i][orientation]; 106 } 107 } 108 } 109 return value; 110} 111 112static const int32_t keyCodeRotationMap[][4] = { 113 // key codes enumerated counter-clockwise with the original (unrotated) key first 114 // no rotation, 90 degree rotation, 180 degree rotation, 270 degree rotation 115 { AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT }, 116 { AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN }, 117 { AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT }, 118 { AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP }, 119}; 120static const size_t keyCodeRotationMapSize = 121 sizeof(keyCodeRotationMap) / sizeof(keyCodeRotationMap[0]); 122 123int32_t rotateKeyCode(int32_t keyCode, int32_t orientation) { 124 return rotateValueUsingRotationMap(keyCode, orientation, 125 keyCodeRotationMap, keyCodeRotationMapSize); 126} 127 128static const int32_t edgeFlagRotationMap[][4] = { 129 // edge flags enumerated counter-clockwise with the original (unrotated) edge flag first 130 // no rotation, 90 degree rotation, 180 degree rotation, 270 degree rotation 131 { AMOTION_EVENT_EDGE_FLAG_BOTTOM, AMOTION_EVENT_EDGE_FLAG_RIGHT, 132 AMOTION_EVENT_EDGE_FLAG_TOP, AMOTION_EVENT_EDGE_FLAG_LEFT }, 133 { AMOTION_EVENT_EDGE_FLAG_RIGHT, AMOTION_EVENT_EDGE_FLAG_TOP, 134 AMOTION_EVENT_EDGE_FLAG_LEFT, AMOTION_EVENT_EDGE_FLAG_BOTTOM }, 135 { AMOTION_EVENT_EDGE_FLAG_TOP, AMOTION_EVENT_EDGE_FLAG_LEFT, 136 AMOTION_EVENT_EDGE_FLAG_BOTTOM, AMOTION_EVENT_EDGE_FLAG_RIGHT }, 137 { AMOTION_EVENT_EDGE_FLAG_LEFT, AMOTION_EVENT_EDGE_FLAG_BOTTOM, 138 AMOTION_EVENT_EDGE_FLAG_RIGHT, AMOTION_EVENT_EDGE_FLAG_TOP }, 139}; 140static const size_t edgeFlagRotationMapSize = 141 sizeof(edgeFlagRotationMap) / sizeof(edgeFlagRotationMap[0]); 142 143static int32_t rotateEdgeFlag(int32_t edgeFlag, int32_t orientation) { 144 return rotateValueUsingRotationMap(edgeFlag, orientation, 145 edgeFlagRotationMap, edgeFlagRotationMapSize); 146} 147 148static inline bool sourcesMatchMask(uint32_t sources, uint32_t sourceMask) { 149 return (sources & sourceMask & ~ AINPUT_SOURCE_CLASS_MASK) != 0; 150} 151 152static uint32_t getButtonStateForScanCode(int32_t scanCode) { 153 // Currently all buttons are mapped to the primary button. 154 switch (scanCode) { 155 case BTN_LEFT: 156 return AMOTION_EVENT_BUTTON_PRIMARY; 157 case BTN_RIGHT: 158 case BTN_STYLUS: 159 return AMOTION_EVENT_BUTTON_SECONDARY; 160 case BTN_MIDDLE: 161 case BTN_STYLUS2: 162 return AMOTION_EVENT_BUTTON_TERTIARY; 163 case BTN_SIDE: 164 return AMOTION_EVENT_BUTTON_BACK; 165 case BTN_FORWARD: 166 case BTN_EXTRA: 167 return AMOTION_EVENT_BUTTON_FORWARD; 168 case BTN_BACK: 169 return AMOTION_EVENT_BUTTON_BACK; 170 case BTN_TASK: 171 default: 172 return 0; 173 } 174} 175 176// Returns true if the pointer should be reported as being down given the specified 177// button states. This determines whether the event is reported as a touch event. 178static bool isPointerDown(int32_t buttonState) { 179 return buttonState & 180 (AMOTION_EVENT_BUTTON_PRIMARY | AMOTION_EVENT_BUTTON_SECONDARY 181 | AMOTION_EVENT_BUTTON_TERTIARY); 182} 183 184static int32_t calculateEdgeFlagsUsingPointerBounds( 185 const sp<PointerControllerInterface>& pointerController, float x, float y) { 186 int32_t edgeFlags = 0; 187 float minX, minY, maxX, maxY; 188 if (pointerController->getBounds(&minX, &minY, &maxX, &maxY)) { 189 if (x <= minX) { 190 edgeFlags |= AMOTION_EVENT_EDGE_FLAG_LEFT; 191 } else if (x >= maxX) { 192 edgeFlags |= AMOTION_EVENT_EDGE_FLAG_RIGHT; 193 } 194 if (y <= minY) { 195 edgeFlags |= AMOTION_EVENT_EDGE_FLAG_TOP; 196 } else if (y >= maxY) { 197 edgeFlags |= AMOTION_EVENT_EDGE_FLAG_BOTTOM; 198 } 199 } 200 return edgeFlags; 201} 202 203static float calculateCommonVector(float a, float b) { 204 if (a > 0 && b > 0) { 205 return a < b ? a : b; 206 } else if (a < 0 && b < 0) { 207 return a > b ? a : b; 208 } else { 209 return 0; 210 } 211} 212 213static void synthesizeButtonKey(InputReaderContext* context, int32_t action, 214 nsecs_t when, int32_t deviceId, uint32_t source, 215 uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState, 216 int32_t buttonState, int32_t keyCode) { 217 if ( 218 (action == AKEY_EVENT_ACTION_DOWN 219 && !(lastButtonState & buttonState) 220 && (currentButtonState & buttonState)) 221 || (action == AKEY_EVENT_ACTION_UP 222 && (lastButtonState & buttonState) 223 && !(currentButtonState & buttonState))) { 224 context->getDispatcher()->notifyKey(when, deviceId, source, policyFlags, 225 action, 0, keyCode, 0, context->getGlobalMetaState(), when); 226 } 227} 228 229static void synthesizeButtonKeys(InputReaderContext* context, int32_t action, 230 nsecs_t when, int32_t deviceId, uint32_t source, 231 uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState) { 232 synthesizeButtonKey(context, action, when, deviceId, source, policyFlags, 233 lastButtonState, currentButtonState, 234 AMOTION_EVENT_BUTTON_BACK, AKEYCODE_BACK); 235 synthesizeButtonKey(context, action, when, deviceId, source, policyFlags, 236 lastButtonState, currentButtonState, 237 AMOTION_EVENT_BUTTON_FORWARD, AKEYCODE_FORWARD); 238} 239 240 241// --- InputReader --- 242 243InputReader::InputReader(const sp<EventHubInterface>& eventHub, 244 const sp<InputReaderPolicyInterface>& policy, 245 const sp<InputDispatcherInterface>& dispatcher) : 246 mEventHub(eventHub), mPolicy(policy), mDispatcher(dispatcher), 247 mGlobalMetaState(0), mDisableVirtualKeysTimeout(LLONG_MIN), mNextTimeout(LLONG_MAX), 248 mConfigurationChangesToRefresh(0) { 249 refreshConfiguration(0); 250 updateGlobalMetaState(); 251 updateInputConfiguration(); 252} 253 254InputReader::~InputReader() { 255 for (size_t i = 0; i < mDevices.size(); i++) { 256 delete mDevices.valueAt(i); 257 } 258} 259 260void InputReader::loopOnce() { 261 uint32_t changes; 262 { // acquire lock 263 AutoMutex _l(mStateLock); 264 265 changes = mConfigurationChangesToRefresh; 266 mConfigurationChangesToRefresh = 0; 267 } // release lock 268 269 if (changes) { 270 refreshConfiguration(changes); 271 } 272 273 int32_t timeoutMillis = -1; 274 if (mNextTimeout != LLONG_MAX) { 275 nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); 276 timeoutMillis = toMillisecondTimeoutDelay(now, mNextTimeout); 277 } 278 279 size_t count = mEventHub->getEvents(timeoutMillis, mEventBuffer, EVENT_BUFFER_SIZE); 280 if (count) { 281 processEvents(mEventBuffer, count); 282 } 283 if (!count || timeoutMillis == 0) { 284 nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); 285#if DEBUG_RAW_EVENTS 286 LOGD("Timeout expired, latency=%0.3fms", (now - mNextTimeout) * 0.000001f); 287#endif 288 mNextTimeout = LLONG_MAX; 289 timeoutExpired(now); 290 } 291} 292 293void InputReader::processEvents(const RawEvent* rawEvents, size_t count) { 294 for (const RawEvent* rawEvent = rawEvents; count;) { 295 int32_t type = rawEvent->type; 296 size_t batchSize = 1; 297 if (type < EventHubInterface::FIRST_SYNTHETIC_EVENT) { 298 int32_t deviceId = rawEvent->deviceId; 299 while (batchSize < count) { 300 if (rawEvent[batchSize].type >= EventHubInterface::FIRST_SYNTHETIC_EVENT 301 || rawEvent[batchSize].deviceId != deviceId) { 302 break; 303 } 304 batchSize += 1; 305 } 306#if DEBUG_RAW_EVENTS 307 LOGD("BatchSize: %d Count: %d", batchSize, count); 308#endif 309 processEventsForDevice(deviceId, rawEvent, batchSize); 310 } else { 311 switch (rawEvent->type) { 312 case EventHubInterface::DEVICE_ADDED: 313 addDevice(rawEvent->deviceId); 314 break; 315 case EventHubInterface::DEVICE_REMOVED: 316 removeDevice(rawEvent->deviceId); 317 break; 318 case EventHubInterface::FINISHED_DEVICE_SCAN: 319 handleConfigurationChanged(rawEvent->when); 320 break; 321 default: 322 LOG_ASSERT(false); // can't happen 323 break; 324 } 325 } 326 count -= batchSize; 327 rawEvent += batchSize; 328 } 329} 330 331void InputReader::addDevice(int32_t deviceId) { 332 String8 name = mEventHub->getDeviceName(deviceId); 333 uint32_t classes = mEventHub->getDeviceClasses(deviceId); 334 335 InputDevice* device = createDevice(deviceId, name, classes); 336 device->configure(&mConfig, 0); 337 338 if (device->isIgnored()) { 339 LOGI("Device added: id=%d, name='%s' (ignored non-input device)", deviceId, name.string()); 340 } else { 341 LOGI("Device added: id=%d, name='%s', sources=0x%08x", deviceId, name.string(), 342 device->getSources()); 343 } 344 345 bool added = false; 346 { // acquire device registry writer lock 347 RWLock::AutoWLock _wl(mDeviceRegistryLock); 348 349 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 350 if (deviceIndex < 0) { 351 mDevices.add(deviceId, device); 352 added = true; 353 } 354 } // release device registry writer lock 355 356 if (! added) { 357 LOGW("Ignoring spurious device added event for deviceId %d.", deviceId); 358 delete device; 359 return; 360 } 361} 362 363void InputReader::removeDevice(int32_t deviceId) { 364 bool removed = false; 365 InputDevice* device = NULL; 366 { // acquire device registry writer lock 367 RWLock::AutoWLock _wl(mDeviceRegistryLock); 368 369 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 370 if (deviceIndex >= 0) { 371 device = mDevices.valueAt(deviceIndex); 372 mDevices.removeItemsAt(deviceIndex, 1); 373 removed = true; 374 } 375 } // release device registry writer lock 376 377 if (! removed) { 378 LOGW("Ignoring spurious device removed event for deviceId %d.", deviceId); 379 return; 380 } 381 382 if (device->isIgnored()) { 383 LOGI("Device removed: id=%d, name='%s' (ignored non-input device)", 384 device->getId(), device->getName().string()); 385 } else { 386 LOGI("Device removed: id=%d, name='%s', sources=0x%08x", 387 device->getId(), device->getName().string(), device->getSources()); 388 } 389 390 device->reset(); 391 392 delete device; 393} 394 395InputDevice* InputReader::createDevice(int32_t deviceId, const String8& name, uint32_t classes) { 396 InputDevice* device = new InputDevice(this, deviceId, name); 397 398 // External devices. 399 if (classes & INPUT_DEVICE_CLASS_EXTERNAL) { 400 device->setExternal(true); 401 } 402 403 // Switch-like devices. 404 if (classes & INPUT_DEVICE_CLASS_SWITCH) { 405 device->addMapper(new SwitchInputMapper(device)); 406 } 407 408 // Keyboard-like devices. 409 uint32_t keyboardSource = 0; 410 int32_t keyboardType = AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC; 411 if (classes & INPUT_DEVICE_CLASS_KEYBOARD) { 412 keyboardSource |= AINPUT_SOURCE_KEYBOARD; 413 } 414 if (classes & INPUT_DEVICE_CLASS_ALPHAKEY) { 415 keyboardType = AINPUT_KEYBOARD_TYPE_ALPHABETIC; 416 } 417 if (classes & INPUT_DEVICE_CLASS_DPAD) { 418 keyboardSource |= AINPUT_SOURCE_DPAD; 419 } 420 if (classes & INPUT_DEVICE_CLASS_GAMEPAD) { 421 keyboardSource |= AINPUT_SOURCE_GAMEPAD; 422 } 423 424 if (keyboardSource != 0) { 425 device->addMapper(new KeyboardInputMapper(device, keyboardSource, keyboardType)); 426 } 427 428 // Cursor-like devices. 429 if (classes & INPUT_DEVICE_CLASS_CURSOR) { 430 device->addMapper(new CursorInputMapper(device)); 431 } 432 433 // Touchscreens and touchpad devices. 434 if (classes & INPUT_DEVICE_CLASS_TOUCH_MT) { 435 device->addMapper(new MultiTouchInputMapper(device)); 436 } else if (classes & INPUT_DEVICE_CLASS_TOUCH) { 437 device->addMapper(new SingleTouchInputMapper(device)); 438 } 439 440 // Joystick-like devices. 441 if (classes & INPUT_DEVICE_CLASS_JOYSTICK) { 442 device->addMapper(new JoystickInputMapper(device)); 443 } 444 445 return device; 446} 447 448void InputReader::processEventsForDevice(int32_t deviceId, 449 const RawEvent* rawEvents, size_t count) { 450 { // acquire device registry reader lock 451 RWLock::AutoRLock _rl(mDeviceRegistryLock); 452 453 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 454 if (deviceIndex < 0) { 455 LOGW("Discarding event for unknown deviceId %d.", deviceId); 456 return; 457 } 458 459 InputDevice* device = mDevices.valueAt(deviceIndex); 460 if (device->isIgnored()) { 461 //LOGD("Discarding event for ignored deviceId %d.", deviceId); 462 return; 463 } 464 465 device->process(rawEvents, count); 466 } // release device registry reader lock 467} 468 469void InputReader::timeoutExpired(nsecs_t when) { 470 { // acquire device registry reader lock 471 RWLock::AutoRLock _rl(mDeviceRegistryLock); 472 473 for (size_t i = 0; i < mDevices.size(); i++) { 474 InputDevice* device = mDevices.valueAt(i); 475 if (!device->isIgnored()) { 476 device->timeoutExpired(when); 477 } 478 } 479 } // release device registry reader lock 480} 481 482void InputReader::handleConfigurationChanged(nsecs_t when) { 483 // Reset global meta state because it depends on the list of all configured devices. 484 updateGlobalMetaState(); 485 486 // Update input configuration. 487 updateInputConfiguration(); 488 489 // Enqueue configuration changed. 490 mDispatcher->notifyConfigurationChanged(when); 491} 492 493void InputReader::refreshConfiguration(uint32_t changes) { 494 mPolicy->getReaderConfiguration(&mConfig); 495 mEventHub->setExcludedDevices(mConfig.excludedDeviceNames); 496 497 if (changes) { 498 LOGI("Reconfiguring input devices. changes=0x%08x", changes); 499 500 if (changes & InputReaderConfiguration::CHANGE_MUST_REOPEN) { 501 mEventHub->requestReopenDevices(); 502 } else { 503 { // acquire device registry reader lock 504 RWLock::AutoRLock _rl(mDeviceRegistryLock); 505 506 for (size_t i = 0; i < mDevices.size(); i++) { 507 InputDevice* device = mDevices.valueAt(i); 508 device->configure(&mConfig, changes); 509 } 510 } // release device registry reader lock 511 } 512 } 513} 514 515void InputReader::updateGlobalMetaState() { 516 { // acquire state lock 517 AutoMutex _l(mStateLock); 518 519 mGlobalMetaState = 0; 520 521 { // acquire device registry reader lock 522 RWLock::AutoRLock _rl(mDeviceRegistryLock); 523 524 for (size_t i = 0; i < mDevices.size(); i++) { 525 InputDevice* device = mDevices.valueAt(i); 526 mGlobalMetaState |= device->getMetaState(); 527 } 528 } // release device registry reader lock 529 } // release state lock 530} 531 532int32_t InputReader::getGlobalMetaState() { 533 { // acquire state lock 534 AutoMutex _l(mStateLock); 535 536 return mGlobalMetaState; 537 } // release state lock 538} 539 540void InputReader::updateInputConfiguration() { 541 { // acquire state lock 542 AutoMutex _l(mStateLock); 543 544 int32_t touchScreenConfig = InputConfiguration::TOUCHSCREEN_NOTOUCH; 545 int32_t keyboardConfig = InputConfiguration::KEYBOARD_NOKEYS; 546 int32_t navigationConfig = InputConfiguration::NAVIGATION_NONAV; 547 { // acquire device registry reader lock 548 RWLock::AutoRLock _rl(mDeviceRegistryLock); 549 550 InputDeviceInfo deviceInfo; 551 for (size_t i = 0; i < mDevices.size(); i++) { 552 InputDevice* device = mDevices.valueAt(i); 553 device->getDeviceInfo(& deviceInfo); 554 uint32_t sources = deviceInfo.getSources(); 555 556 if ((sources & AINPUT_SOURCE_TOUCHSCREEN) == AINPUT_SOURCE_TOUCHSCREEN) { 557 touchScreenConfig = InputConfiguration::TOUCHSCREEN_FINGER; 558 } 559 if ((sources & AINPUT_SOURCE_TRACKBALL) == AINPUT_SOURCE_TRACKBALL) { 560 navigationConfig = InputConfiguration::NAVIGATION_TRACKBALL; 561 } else if ((sources & AINPUT_SOURCE_DPAD) == AINPUT_SOURCE_DPAD) { 562 navigationConfig = InputConfiguration::NAVIGATION_DPAD; 563 } 564 if (deviceInfo.getKeyboardType() == AINPUT_KEYBOARD_TYPE_ALPHABETIC) { 565 keyboardConfig = InputConfiguration::KEYBOARD_QWERTY; 566 } 567 } 568 } // release device registry reader lock 569 570 mInputConfiguration.touchScreen = touchScreenConfig; 571 mInputConfiguration.keyboard = keyboardConfig; 572 mInputConfiguration.navigation = navigationConfig; 573 } // release state lock 574} 575 576void InputReader::disableVirtualKeysUntil(nsecs_t time) { 577 mDisableVirtualKeysTimeout = time; 578} 579 580bool InputReader::shouldDropVirtualKey(nsecs_t now, 581 InputDevice* device, int32_t keyCode, int32_t scanCode) { 582 if (now < mDisableVirtualKeysTimeout) { 583 LOGI("Dropping virtual key from device %s because virtual keys are " 584 "temporarily disabled for the next %0.3fms. keyCode=%d, scanCode=%d", 585 device->getName().string(), 586 (mDisableVirtualKeysTimeout - now) * 0.000001, 587 keyCode, scanCode); 588 return true; 589 } else { 590 return false; 591 } 592} 593 594void InputReader::fadePointer() { 595 { // acquire device registry reader lock 596 RWLock::AutoRLock _rl(mDeviceRegistryLock); 597 598 for (size_t i = 0; i < mDevices.size(); i++) { 599 InputDevice* device = mDevices.valueAt(i); 600 device->fadePointer(); 601 } 602 } // release device registry reader lock 603} 604 605void InputReader::requestTimeoutAtTime(nsecs_t when) { 606 if (when < mNextTimeout) { 607 mNextTimeout = when; 608 } 609} 610 611void InputReader::getInputConfiguration(InputConfiguration* outConfiguration) { 612 { // acquire state lock 613 AutoMutex _l(mStateLock); 614 615 *outConfiguration = mInputConfiguration; 616 } // release state lock 617} 618 619status_t InputReader::getInputDeviceInfo(int32_t deviceId, InputDeviceInfo* outDeviceInfo) { 620 { // acquire device registry reader lock 621 RWLock::AutoRLock _rl(mDeviceRegistryLock); 622 623 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 624 if (deviceIndex < 0) { 625 return NAME_NOT_FOUND; 626 } 627 628 InputDevice* device = mDevices.valueAt(deviceIndex); 629 if (device->isIgnored()) { 630 return NAME_NOT_FOUND; 631 } 632 633 device->getDeviceInfo(outDeviceInfo); 634 return OK; 635 } // release device registy reader lock 636} 637 638void InputReader::getInputDeviceIds(Vector<int32_t>& outDeviceIds) { 639 outDeviceIds.clear(); 640 641 { // acquire device registry reader lock 642 RWLock::AutoRLock _rl(mDeviceRegistryLock); 643 644 size_t numDevices = mDevices.size(); 645 for (size_t i = 0; i < numDevices; i++) { 646 InputDevice* device = mDevices.valueAt(i); 647 if (! device->isIgnored()) { 648 outDeviceIds.add(device->getId()); 649 } 650 } 651 } // release device registy reader lock 652} 653 654int32_t InputReader::getKeyCodeState(int32_t deviceId, uint32_t sourceMask, 655 int32_t keyCode) { 656 return getState(deviceId, sourceMask, keyCode, & InputDevice::getKeyCodeState); 657} 658 659int32_t InputReader::getScanCodeState(int32_t deviceId, uint32_t sourceMask, 660 int32_t scanCode) { 661 return getState(deviceId, sourceMask, scanCode, & InputDevice::getScanCodeState); 662} 663 664int32_t InputReader::getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t switchCode) { 665 return getState(deviceId, sourceMask, switchCode, & InputDevice::getSwitchState); 666} 667 668int32_t InputReader::getState(int32_t deviceId, uint32_t sourceMask, int32_t code, 669 GetStateFunc getStateFunc) { 670 { // acquire device registry reader lock 671 RWLock::AutoRLock _rl(mDeviceRegistryLock); 672 673 int32_t result = AKEY_STATE_UNKNOWN; 674 if (deviceId >= 0) { 675 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 676 if (deviceIndex >= 0) { 677 InputDevice* device = mDevices.valueAt(deviceIndex); 678 if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { 679 result = (device->*getStateFunc)(sourceMask, code); 680 } 681 } 682 } else { 683 size_t numDevices = mDevices.size(); 684 for (size_t i = 0; i < numDevices; i++) { 685 InputDevice* device = mDevices.valueAt(i); 686 if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { 687 result = (device->*getStateFunc)(sourceMask, code); 688 if (result >= AKEY_STATE_DOWN) { 689 return result; 690 } 691 } 692 } 693 } 694 return result; 695 } // release device registy reader lock 696} 697 698bool InputReader::hasKeys(int32_t deviceId, uint32_t sourceMask, 699 size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) { 700 memset(outFlags, 0, numCodes); 701 return markSupportedKeyCodes(deviceId, sourceMask, numCodes, keyCodes, outFlags); 702} 703 704bool InputReader::markSupportedKeyCodes(int32_t deviceId, uint32_t sourceMask, size_t numCodes, 705 const int32_t* keyCodes, uint8_t* outFlags) { 706 { // acquire device registry reader lock 707 RWLock::AutoRLock _rl(mDeviceRegistryLock); 708 bool result = false; 709 if (deviceId >= 0) { 710 ssize_t deviceIndex = mDevices.indexOfKey(deviceId); 711 if (deviceIndex >= 0) { 712 InputDevice* device = mDevices.valueAt(deviceIndex); 713 if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { 714 result = device->markSupportedKeyCodes(sourceMask, 715 numCodes, keyCodes, outFlags); 716 } 717 } 718 } else { 719 size_t numDevices = mDevices.size(); 720 for (size_t i = 0; i < numDevices; i++) { 721 InputDevice* device = mDevices.valueAt(i); 722 if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { 723 result |= device->markSupportedKeyCodes(sourceMask, 724 numCodes, keyCodes, outFlags); 725 } 726 } 727 } 728 return result; 729 } // release device registy reader lock 730} 731 732void InputReader::requestRefreshConfiguration(uint32_t changes) { 733 if (changes) { 734 bool needWake; 735 { // acquire lock 736 AutoMutex _l(mStateLock); 737 738 needWake = !mConfigurationChangesToRefresh; 739 mConfigurationChangesToRefresh |= changes; 740 } // release lock 741 742 if (needWake) { 743 mEventHub->wake(); 744 } 745 } 746} 747 748void InputReader::dump(String8& dump) { 749 mEventHub->dump(dump); 750 dump.append("\n"); 751 752 dump.append("Input Reader State:\n"); 753 754 { // acquire device registry reader lock 755 RWLock::AutoRLock _rl(mDeviceRegistryLock); 756 757 for (size_t i = 0; i < mDevices.size(); i++) { 758 mDevices.valueAt(i)->dump(dump); 759 } 760 } // release device registy reader lock 761 762 dump.append(INDENT "Configuration:\n"); 763 dump.append(INDENT2 "ExcludedDeviceNames: ["); 764 for (size_t i = 0; i < mConfig.excludedDeviceNames.size(); i++) { 765 if (i != 0) { 766 dump.append(", "); 767 } 768 dump.append(mConfig.excludedDeviceNames.itemAt(i).string()); 769 } 770 dump.append("]\n"); 771 dump.appendFormat(INDENT2 "VirtualKeyQuietTime: %0.1fms\n", 772 mConfig.virtualKeyQuietTime * 0.000001f); 773 774 dump.appendFormat(INDENT2 "PointerVelocityControlParameters: " 775 "scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, acceleration=%0.3f\n", 776 mConfig.pointerVelocityControlParameters.scale, 777 mConfig.pointerVelocityControlParameters.lowThreshold, 778 mConfig.pointerVelocityControlParameters.highThreshold, 779 mConfig.pointerVelocityControlParameters.acceleration); 780 781 dump.appendFormat(INDENT2 "WheelVelocityControlParameters: " 782 "scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, acceleration=%0.3f\n", 783 mConfig.wheelVelocityControlParameters.scale, 784 mConfig.wheelVelocityControlParameters.lowThreshold, 785 mConfig.wheelVelocityControlParameters.highThreshold, 786 mConfig.wheelVelocityControlParameters.acceleration); 787 788 dump.appendFormat(INDENT2 "PointerGesture:\n"); 789 dump.appendFormat(INDENT3 "Enabled: %s\n", 790 toString(mConfig.pointerGesturesEnabled)); 791 dump.appendFormat(INDENT3 "QuietInterval: %0.1fms\n", 792 mConfig.pointerGestureQuietInterval * 0.000001f); 793 dump.appendFormat(INDENT3 "DragMinSwitchSpeed: %0.1fpx/s\n", 794 mConfig.pointerGestureDragMinSwitchSpeed); 795 dump.appendFormat(INDENT3 "TapInterval: %0.1fms\n", 796 mConfig.pointerGestureTapInterval * 0.000001f); 797 dump.appendFormat(INDENT3 "TapDragInterval: %0.1fms\n", 798 mConfig.pointerGestureTapDragInterval * 0.000001f); 799 dump.appendFormat(INDENT3 "TapSlop: %0.1fpx\n", 800 mConfig.pointerGestureTapSlop); 801 dump.appendFormat(INDENT3 "MultitouchSettleInterval: %0.1fms\n", 802 mConfig.pointerGestureMultitouchSettleInterval * 0.000001f); 803 dump.appendFormat(INDENT3 "MultitouchMinDistance: %0.1fpx\n", 804 mConfig.pointerGestureMultitouchMinDistance); 805 dump.appendFormat(INDENT3 "SwipeTransitionAngleCosine: %0.1f\n", 806 mConfig.pointerGestureSwipeTransitionAngleCosine); 807 dump.appendFormat(INDENT3 "SwipeMaxWidthRatio: %0.1f\n", 808 mConfig.pointerGestureSwipeMaxWidthRatio); 809 dump.appendFormat(INDENT3 "MovementSpeedRatio: %0.1f\n", 810 mConfig.pointerGestureMovementSpeedRatio); 811 dump.appendFormat(INDENT3 "ZoomSpeedRatio: %0.1f\n", 812 mConfig.pointerGestureZoomSpeedRatio); 813} 814 815 816// --- InputReaderThread --- 817 818InputReaderThread::InputReaderThread(const sp<InputReaderInterface>& reader) : 819 Thread(/*canCallJava*/ true), mReader(reader) { 820} 821 822InputReaderThread::~InputReaderThread() { 823} 824 825bool InputReaderThread::threadLoop() { 826 mReader->loopOnce(); 827 return true; 828} 829 830 831// --- InputDevice --- 832 833InputDevice::InputDevice(InputReaderContext* context, int32_t id, const String8& name) : 834 mContext(context), mId(id), mName(name), mSources(0), 835 mIsExternal(false), mDropUntilNextSync(false) { 836} 837 838InputDevice::~InputDevice() { 839 size_t numMappers = mMappers.size(); 840 for (size_t i = 0; i < numMappers; i++) { 841 delete mMappers[i]; 842 } 843 mMappers.clear(); 844} 845 846void InputDevice::dump(String8& dump) { 847 InputDeviceInfo deviceInfo; 848 getDeviceInfo(& deviceInfo); 849 850 dump.appendFormat(INDENT "Device %d: %s\n", deviceInfo.getId(), 851 deviceInfo.getName().string()); 852 dump.appendFormat(INDENT2 "IsExternal: %s\n", toString(mIsExternal)); 853 dump.appendFormat(INDENT2 "Sources: 0x%08x\n", deviceInfo.getSources()); 854 dump.appendFormat(INDENT2 "KeyboardType: %d\n", deviceInfo.getKeyboardType()); 855 856 const Vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges(); 857 if (!ranges.isEmpty()) { 858 dump.append(INDENT2 "Motion Ranges:\n"); 859 for (size_t i = 0; i < ranges.size(); i++) { 860 const InputDeviceInfo::MotionRange& range = ranges.itemAt(i); 861 const char* label = getAxisLabel(range.axis); 862 char name[32]; 863 if (label) { 864 strncpy(name, label, sizeof(name)); 865 name[sizeof(name) - 1] = '\0'; 866 } else { 867 snprintf(name, sizeof(name), "%d", range.axis); 868 } 869 dump.appendFormat(INDENT3 "%s: source=0x%08x, " 870 "min=%0.3f, max=%0.3f, flat=%0.3f, fuzz=%0.3f\n", 871 name, range.source, range.min, range.max, range.flat, range.fuzz); 872 } 873 } 874 875 size_t numMappers = mMappers.size(); 876 for (size_t i = 0; i < numMappers; i++) { 877 InputMapper* mapper = mMappers[i]; 878 mapper->dump(dump); 879 } 880} 881 882void InputDevice::addMapper(InputMapper* mapper) { 883 mMappers.add(mapper); 884} 885 886void InputDevice::configure(const InputReaderConfiguration* config, uint32_t changes) { 887 mSources = 0; 888 889 if (!isIgnored()) { 890 if (!changes) { // first time only 891 mContext->getEventHub()->getConfiguration(mId, &mConfiguration); 892 } 893 894 size_t numMappers = mMappers.size(); 895 for (size_t i = 0; i < numMappers; i++) { 896 InputMapper* mapper = mMappers[i]; 897 mapper->configure(config, changes); 898 mSources |= mapper->getSources(); 899 } 900 } 901} 902 903void InputDevice::reset() { 904 size_t numMappers = mMappers.size(); 905 for (size_t i = 0; i < numMappers; i++) { 906 InputMapper* mapper = mMappers[i]; 907 mapper->reset(); 908 } 909} 910 911void InputDevice::process(const RawEvent* rawEvents, size_t count) { 912 // Process all of the events in order for each mapper. 913 // We cannot simply ask each mapper to process them in bulk because mappers may 914 // have side-effects that must be interleaved. For example, joystick movement events and 915 // gamepad button presses are handled by different mappers but they should be dispatched 916 // in the order received. 917 size_t numMappers = mMappers.size(); 918 for (const RawEvent* rawEvent = rawEvents; count--; rawEvent++) { 919#if DEBUG_RAW_EVENTS 920 LOGD("Input event: device=%d type=0x%04x scancode=0x%04x " 921 "keycode=0x%04x value=0x%08x flags=0x%08x", 922 rawEvent->deviceId, rawEvent->type, rawEvent->scanCode, rawEvent->keyCode, 923 rawEvent->value, rawEvent->flags); 924#endif 925 926 if (mDropUntilNextSync) { 927 if (rawEvent->type == EV_SYN && rawEvent->scanCode == SYN_REPORT) { 928 mDropUntilNextSync = false; 929#if DEBUG_RAW_EVENTS 930 LOGD("Recovered from input event buffer overrun."); 931#endif 932 } else { 933#if DEBUG_RAW_EVENTS 934 LOGD("Dropped input event while waiting for next input sync."); 935#endif 936 } 937 } else if (rawEvent->type == EV_SYN && rawEvent->scanCode == SYN_DROPPED) { 938 LOGI("Detected input event buffer overrun for device %s.", mName.string()); 939 mDropUntilNextSync = true; 940 reset(); 941 } else { 942 for (size_t i = 0; i < numMappers; i++) { 943 InputMapper* mapper = mMappers[i]; 944 mapper->process(rawEvent); 945 } 946 } 947 } 948} 949 950void InputDevice::timeoutExpired(nsecs_t when) { 951 size_t numMappers = mMappers.size(); 952 for (size_t i = 0; i < numMappers; i++) { 953 InputMapper* mapper = mMappers[i]; 954 mapper->timeoutExpired(when); 955 } 956} 957 958void InputDevice::getDeviceInfo(InputDeviceInfo* outDeviceInfo) { 959 outDeviceInfo->initialize(mId, mName); 960 961 size_t numMappers = mMappers.size(); 962 for (size_t i = 0; i < numMappers; i++) { 963 InputMapper* mapper = mMappers[i]; 964 mapper->populateDeviceInfo(outDeviceInfo); 965 } 966} 967 968int32_t InputDevice::getKeyCodeState(uint32_t sourceMask, int32_t keyCode) { 969 return getState(sourceMask, keyCode, & InputMapper::getKeyCodeState); 970} 971 972int32_t InputDevice::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { 973 return getState(sourceMask, scanCode, & InputMapper::getScanCodeState); 974} 975 976int32_t InputDevice::getSwitchState(uint32_t sourceMask, int32_t switchCode) { 977 return getState(sourceMask, switchCode, & InputMapper::getSwitchState); 978} 979 980int32_t InputDevice::getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc) { 981 int32_t result = AKEY_STATE_UNKNOWN; 982 size_t numMappers = mMappers.size(); 983 for (size_t i = 0; i < numMappers; i++) { 984 InputMapper* mapper = mMappers[i]; 985 if (sourcesMatchMask(mapper->getSources(), sourceMask)) { 986 result = (mapper->*getStateFunc)(sourceMask, code); 987 if (result >= AKEY_STATE_DOWN) { 988 return result; 989 } 990 } 991 } 992 return result; 993} 994 995bool InputDevice::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 996 const int32_t* keyCodes, uint8_t* outFlags) { 997 bool result = false; 998 size_t numMappers = mMappers.size(); 999 for (size_t i = 0; i < numMappers; i++) { 1000 InputMapper* mapper = mMappers[i]; 1001 if (sourcesMatchMask(mapper->getSources(), sourceMask)) { 1002 result |= mapper->markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags); 1003 } 1004 } 1005 return result; 1006} 1007 1008int32_t InputDevice::getMetaState() { 1009 int32_t result = 0; 1010 size_t numMappers = mMappers.size(); 1011 for (size_t i = 0; i < numMappers; i++) { 1012 InputMapper* mapper = mMappers[i]; 1013 result |= mapper->getMetaState(); 1014 } 1015 return result; 1016} 1017 1018void InputDevice::fadePointer() { 1019 size_t numMappers = mMappers.size(); 1020 for (size_t i = 0; i < numMappers; i++) { 1021 InputMapper* mapper = mMappers[i]; 1022 mapper->fadePointer(); 1023 } 1024} 1025 1026 1027// --- InputMapper --- 1028 1029InputMapper::InputMapper(InputDevice* device) : 1030 mDevice(device), mContext(device->getContext()) { 1031} 1032 1033InputMapper::~InputMapper() { 1034} 1035 1036void InputMapper::populateDeviceInfo(InputDeviceInfo* info) { 1037 info->addSource(getSources()); 1038} 1039 1040void InputMapper::dump(String8& dump) { 1041} 1042 1043void InputMapper::configure(const InputReaderConfiguration* config, uint32_t changes) { 1044} 1045 1046void InputMapper::reset() { 1047} 1048 1049void InputMapper::timeoutExpired(nsecs_t when) { 1050} 1051 1052int32_t InputMapper::getKeyCodeState(uint32_t sourceMask, int32_t keyCode) { 1053 return AKEY_STATE_UNKNOWN; 1054} 1055 1056int32_t InputMapper::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { 1057 return AKEY_STATE_UNKNOWN; 1058} 1059 1060int32_t InputMapper::getSwitchState(uint32_t sourceMask, int32_t switchCode) { 1061 return AKEY_STATE_UNKNOWN; 1062} 1063 1064bool InputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 1065 const int32_t* keyCodes, uint8_t* outFlags) { 1066 return false; 1067} 1068 1069int32_t InputMapper::getMetaState() { 1070 return 0; 1071} 1072 1073void InputMapper::fadePointer() { 1074} 1075 1076void InputMapper::dumpRawAbsoluteAxisInfo(String8& dump, 1077 const RawAbsoluteAxisInfo& axis, const char* name) { 1078 if (axis.valid) { 1079 dump.appendFormat(INDENT4 "%s: min=%d, max=%d, flat=%d, fuzz=%d, resolution=%d\n", 1080 name, axis.minValue, axis.maxValue, axis.flat, axis.fuzz, axis.resolution); 1081 } else { 1082 dump.appendFormat(INDENT4 "%s: unknown range\n", name); 1083 } 1084} 1085 1086 1087// --- SwitchInputMapper --- 1088 1089SwitchInputMapper::SwitchInputMapper(InputDevice* device) : 1090 InputMapper(device) { 1091} 1092 1093SwitchInputMapper::~SwitchInputMapper() { 1094} 1095 1096uint32_t SwitchInputMapper::getSources() { 1097 return AINPUT_SOURCE_SWITCH; 1098} 1099 1100void SwitchInputMapper::process(const RawEvent* rawEvent) { 1101 switch (rawEvent->type) { 1102 case EV_SW: 1103 processSwitch(rawEvent->when, rawEvent->scanCode, rawEvent->value); 1104 break; 1105 } 1106} 1107 1108void SwitchInputMapper::processSwitch(nsecs_t when, int32_t switchCode, int32_t switchValue) { 1109 getDispatcher()->notifySwitch(when, switchCode, switchValue, 0); 1110} 1111 1112int32_t SwitchInputMapper::getSwitchState(uint32_t sourceMask, int32_t switchCode) { 1113 return getEventHub()->getSwitchState(getDeviceId(), switchCode); 1114} 1115 1116 1117// --- KeyboardInputMapper --- 1118 1119KeyboardInputMapper::KeyboardInputMapper(InputDevice* device, 1120 uint32_t source, int32_t keyboardType) : 1121 InputMapper(device), mSource(source), 1122 mKeyboardType(keyboardType) { 1123 initializeLocked(); 1124} 1125 1126KeyboardInputMapper::~KeyboardInputMapper() { 1127} 1128 1129void KeyboardInputMapper::initializeLocked() { 1130 mLocked.metaState = AMETA_NONE; 1131 mLocked.downTime = 0; 1132} 1133 1134uint32_t KeyboardInputMapper::getSources() { 1135 return mSource; 1136} 1137 1138void KeyboardInputMapper::populateDeviceInfo(InputDeviceInfo* info) { 1139 InputMapper::populateDeviceInfo(info); 1140 1141 info->setKeyboardType(mKeyboardType); 1142} 1143 1144void KeyboardInputMapper::dump(String8& dump) { 1145 { // acquire lock 1146 AutoMutex _l(mLock); 1147 dump.append(INDENT2 "Keyboard Input Mapper:\n"); 1148 dumpParameters(dump); 1149 dump.appendFormat(INDENT3 "KeyboardType: %d\n", mKeyboardType); 1150 dump.appendFormat(INDENT3 "KeyDowns: %d keys currently down\n", mLocked.keyDowns.size()); 1151 dump.appendFormat(INDENT3 "MetaState: 0x%0x\n", mLocked.metaState); 1152 dump.appendFormat(INDENT3 "DownTime: %lld\n", mLocked.downTime); 1153 } // release lock 1154} 1155 1156 1157void KeyboardInputMapper::configure(const InputReaderConfiguration* config, uint32_t changes) { 1158 InputMapper::configure(config, changes); 1159 1160 if (!changes) { // first time only 1161 // Configure basic parameters. 1162 configureParameters(); 1163 1164 // Reset LEDs. 1165 { 1166 AutoMutex _l(mLock); 1167 resetLedStateLocked(); 1168 } 1169 } 1170} 1171 1172void KeyboardInputMapper::configureParameters() { 1173 mParameters.orientationAware = false; 1174 getDevice()->getConfiguration().tryGetProperty(String8("keyboard.orientationAware"), 1175 mParameters.orientationAware); 1176 1177 mParameters.associatedDisplayId = mParameters.orientationAware ? 0 : -1; 1178} 1179 1180void KeyboardInputMapper::dumpParameters(String8& dump) { 1181 dump.append(INDENT3 "Parameters:\n"); 1182 dump.appendFormat(INDENT4 "AssociatedDisplayId: %d\n", 1183 mParameters.associatedDisplayId); 1184 dump.appendFormat(INDENT4 "OrientationAware: %s\n", 1185 toString(mParameters.orientationAware)); 1186} 1187 1188void KeyboardInputMapper::reset() { 1189 for (;;) { 1190 int32_t keyCode, scanCode; 1191 { // acquire lock 1192 AutoMutex _l(mLock); 1193 1194 // Synthesize key up event on reset if keys are currently down. 1195 if (mLocked.keyDowns.isEmpty()) { 1196 initializeLocked(); 1197 resetLedStateLocked(); 1198 break; // done 1199 } 1200 1201 const KeyDown& keyDown = mLocked.keyDowns.top(); 1202 keyCode = keyDown.keyCode; 1203 scanCode = keyDown.scanCode; 1204 } // release lock 1205 1206 nsecs_t when = systemTime(SYSTEM_TIME_MONOTONIC); 1207 processKey(when, false, keyCode, scanCode, 0); 1208 } 1209 1210 InputMapper::reset(); 1211 getContext()->updateGlobalMetaState(); 1212} 1213 1214void KeyboardInputMapper::process(const RawEvent* rawEvent) { 1215 switch (rawEvent->type) { 1216 case EV_KEY: { 1217 int32_t scanCode = rawEvent->scanCode; 1218 if (isKeyboardOrGamepadKey(scanCode)) { 1219 processKey(rawEvent->when, rawEvent->value != 0, rawEvent->keyCode, scanCode, 1220 rawEvent->flags); 1221 } 1222 break; 1223 } 1224 } 1225} 1226 1227bool KeyboardInputMapper::isKeyboardOrGamepadKey(int32_t scanCode) { 1228 return scanCode < BTN_MOUSE 1229 || scanCode >= KEY_OK 1230 || (scanCode >= BTN_MISC && scanCode < BTN_MOUSE) 1231 || (scanCode >= BTN_JOYSTICK && scanCode < BTN_DIGI); 1232} 1233 1234void KeyboardInputMapper::processKey(nsecs_t when, bool down, int32_t keyCode, 1235 int32_t scanCode, uint32_t policyFlags) { 1236 int32_t newMetaState; 1237 nsecs_t downTime; 1238 bool metaStateChanged = false; 1239 1240 { // acquire lock 1241 AutoMutex _l(mLock); 1242 1243 if (down) { 1244 // Rotate key codes according to orientation if needed. 1245 // Note: getDisplayInfo is non-reentrant so we can continue holding the lock. 1246 if (mParameters.orientationAware && mParameters.associatedDisplayId >= 0) { 1247 int32_t orientation; 1248 if (!getPolicy()->getDisplayInfo(mParameters.associatedDisplayId, 1249 NULL, NULL, & orientation)) { 1250 orientation = DISPLAY_ORIENTATION_0; 1251 } 1252 1253 keyCode = rotateKeyCode(keyCode, orientation); 1254 } 1255 1256 // Add key down. 1257 ssize_t keyDownIndex = findKeyDownLocked(scanCode); 1258 if (keyDownIndex >= 0) { 1259 // key repeat, be sure to use same keycode as before in case of rotation 1260 keyCode = mLocked.keyDowns.itemAt(keyDownIndex).keyCode; 1261 } else { 1262 // key down 1263 if ((policyFlags & POLICY_FLAG_VIRTUAL) 1264 && mContext->shouldDropVirtualKey(when, 1265 getDevice(), keyCode, scanCode)) { 1266 return; 1267 } 1268 1269 mLocked.keyDowns.push(); 1270 KeyDown& keyDown = mLocked.keyDowns.editTop(); 1271 keyDown.keyCode = keyCode; 1272 keyDown.scanCode = scanCode; 1273 } 1274 1275 mLocked.downTime = when; 1276 } else { 1277 // Remove key down. 1278 ssize_t keyDownIndex = findKeyDownLocked(scanCode); 1279 if (keyDownIndex >= 0) { 1280 // key up, be sure to use same keycode as before in case of rotation 1281 keyCode = mLocked.keyDowns.itemAt(keyDownIndex).keyCode; 1282 mLocked.keyDowns.removeAt(size_t(keyDownIndex)); 1283 } else { 1284 // key was not actually down 1285 LOGI("Dropping key up from device %s because the key was not down. " 1286 "keyCode=%d, scanCode=%d", 1287 getDeviceName().string(), keyCode, scanCode); 1288 return; 1289 } 1290 } 1291 1292 int32_t oldMetaState = mLocked.metaState; 1293 newMetaState = updateMetaState(keyCode, down, oldMetaState); 1294 if (oldMetaState != newMetaState) { 1295 mLocked.metaState = newMetaState; 1296 metaStateChanged = true; 1297 updateLedStateLocked(false); 1298 } 1299 1300 downTime = mLocked.downTime; 1301 } // release lock 1302 1303 // Key down on external an keyboard should wake the device. 1304 // We don't do this for internal keyboards to prevent them from waking up in your pocket. 1305 // For internal keyboards, the key layout file should specify the policy flags for 1306 // each wake key individually. 1307 // TODO: Use the input device configuration to control this behavior more finely. 1308 if (down && getDevice()->isExternal() 1309 && !(policyFlags & (POLICY_FLAG_WAKE | POLICY_FLAG_WAKE_DROPPED))) { 1310 policyFlags |= POLICY_FLAG_WAKE_DROPPED; 1311 } 1312 1313 if (metaStateChanged) { 1314 getContext()->updateGlobalMetaState(); 1315 } 1316 1317 if (down && !isMetaKey(keyCode)) { 1318 getContext()->fadePointer(); 1319 } 1320 1321 getDispatcher()->notifyKey(when, getDeviceId(), mSource, policyFlags, 1322 down ? AKEY_EVENT_ACTION_DOWN : AKEY_EVENT_ACTION_UP, 1323 AKEY_EVENT_FLAG_FROM_SYSTEM, keyCode, scanCode, newMetaState, downTime); 1324} 1325 1326ssize_t KeyboardInputMapper::findKeyDownLocked(int32_t scanCode) { 1327 size_t n = mLocked.keyDowns.size(); 1328 for (size_t i = 0; i < n; i++) { 1329 if (mLocked.keyDowns[i].scanCode == scanCode) { 1330 return i; 1331 } 1332 } 1333 return -1; 1334} 1335 1336int32_t KeyboardInputMapper::getKeyCodeState(uint32_t sourceMask, int32_t keyCode) { 1337 return getEventHub()->getKeyCodeState(getDeviceId(), keyCode); 1338} 1339 1340int32_t KeyboardInputMapper::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { 1341 return getEventHub()->getScanCodeState(getDeviceId(), scanCode); 1342} 1343 1344bool KeyboardInputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 1345 const int32_t* keyCodes, uint8_t* outFlags) { 1346 return getEventHub()->markSupportedKeyCodes(getDeviceId(), numCodes, keyCodes, outFlags); 1347} 1348 1349int32_t KeyboardInputMapper::getMetaState() { 1350 { // acquire lock 1351 AutoMutex _l(mLock); 1352 return mLocked.metaState; 1353 } // release lock 1354} 1355 1356void KeyboardInputMapper::resetLedStateLocked() { 1357 initializeLedStateLocked(mLocked.capsLockLedState, LED_CAPSL); 1358 initializeLedStateLocked(mLocked.numLockLedState, LED_NUML); 1359 initializeLedStateLocked(mLocked.scrollLockLedState, LED_SCROLLL); 1360 1361 updateLedStateLocked(true); 1362} 1363 1364void KeyboardInputMapper::initializeLedStateLocked(LockedState::LedState& ledState, int32_t led) { 1365 ledState.avail = getEventHub()->hasLed(getDeviceId(), led); 1366 ledState.on = false; 1367} 1368 1369void KeyboardInputMapper::updateLedStateLocked(bool reset) { 1370 updateLedStateForModifierLocked(mLocked.capsLockLedState, LED_CAPSL, 1371 AMETA_CAPS_LOCK_ON, reset); 1372 updateLedStateForModifierLocked(mLocked.numLockLedState, LED_NUML, 1373 AMETA_NUM_LOCK_ON, reset); 1374 updateLedStateForModifierLocked(mLocked.scrollLockLedState, LED_SCROLLL, 1375 AMETA_SCROLL_LOCK_ON, reset); 1376} 1377 1378void KeyboardInputMapper::updateLedStateForModifierLocked(LockedState::LedState& ledState, 1379 int32_t led, int32_t modifier, bool reset) { 1380 if (ledState.avail) { 1381 bool desiredState = (mLocked.metaState & modifier) != 0; 1382 if (reset || ledState.on != desiredState) { 1383 getEventHub()->setLedState(getDeviceId(), led, desiredState); 1384 ledState.on = desiredState; 1385 } 1386 } 1387} 1388 1389 1390// --- CursorInputMapper --- 1391 1392CursorInputMapper::CursorInputMapper(InputDevice* device) : 1393 InputMapper(device) { 1394 initializeLocked(); 1395} 1396 1397CursorInputMapper::~CursorInputMapper() { 1398} 1399 1400uint32_t CursorInputMapper::getSources() { 1401 return mSource; 1402} 1403 1404void CursorInputMapper::populateDeviceInfo(InputDeviceInfo* info) { 1405 InputMapper::populateDeviceInfo(info); 1406 1407 if (mParameters.mode == Parameters::MODE_POINTER) { 1408 float minX, minY, maxX, maxY; 1409 if (mPointerController->getBounds(&minX, &minY, &maxX, &maxY)) { 1410 info->addMotionRange(AMOTION_EVENT_AXIS_X, mSource, minX, maxX, 0.0f, 0.0f); 1411 info->addMotionRange(AMOTION_EVENT_AXIS_Y, mSource, minY, maxY, 0.0f, 0.0f); 1412 } 1413 } else { 1414 info->addMotionRange(AMOTION_EVENT_AXIS_X, mSource, -1.0f, 1.0f, 0.0f, mXScale); 1415 info->addMotionRange(AMOTION_EVENT_AXIS_Y, mSource, -1.0f, 1.0f, 0.0f, mYScale); 1416 } 1417 info->addMotionRange(AMOTION_EVENT_AXIS_PRESSURE, mSource, 0.0f, 1.0f, 0.0f, 0.0f); 1418 1419 if (mHaveVWheel) { 1420 info->addMotionRange(AMOTION_EVENT_AXIS_VSCROLL, mSource, -1.0f, 1.0f, 0.0f, 0.0f); 1421 } 1422 if (mHaveHWheel) { 1423 info->addMotionRange(AMOTION_EVENT_AXIS_HSCROLL, mSource, -1.0f, 1.0f, 0.0f, 0.0f); 1424 } 1425} 1426 1427void CursorInputMapper::dump(String8& dump) { 1428 { // acquire lock 1429 AutoMutex _l(mLock); 1430 dump.append(INDENT2 "Cursor Input Mapper:\n"); 1431 dumpParameters(dump); 1432 dump.appendFormat(INDENT3 "XScale: %0.3f\n", mXScale); 1433 dump.appendFormat(INDENT3 "YScale: %0.3f\n", mYScale); 1434 dump.appendFormat(INDENT3 "XPrecision: %0.3f\n", mXPrecision); 1435 dump.appendFormat(INDENT3 "YPrecision: %0.3f\n", mYPrecision); 1436 dump.appendFormat(INDENT3 "HaveVWheel: %s\n", toString(mHaveVWheel)); 1437 dump.appendFormat(INDENT3 "HaveHWheel: %s\n", toString(mHaveHWheel)); 1438 dump.appendFormat(INDENT3 "VWheelScale: %0.3f\n", mVWheelScale); 1439 dump.appendFormat(INDENT3 "HWheelScale: %0.3f\n", mHWheelScale); 1440 dump.appendFormat(INDENT3 "ButtonState: 0x%08x\n", mLocked.buttonState); 1441 dump.appendFormat(INDENT3 "Down: %s\n", toString(isPointerDown(mLocked.buttonState))); 1442 dump.appendFormat(INDENT3 "DownTime: %lld\n", mLocked.downTime); 1443 } // release lock 1444} 1445 1446void CursorInputMapper::configure(const InputReaderConfiguration* config, uint32_t changes) { 1447 InputMapper::configure(config, changes); 1448 1449 if (!changes) { // first time only 1450 // Configure basic parameters. 1451 configureParameters(); 1452 1453 // Configure device mode. 1454 switch (mParameters.mode) { 1455 case Parameters::MODE_POINTER: 1456 mSource = AINPUT_SOURCE_MOUSE; 1457 mXPrecision = 1.0f; 1458 mYPrecision = 1.0f; 1459 mXScale = 1.0f; 1460 mYScale = 1.0f; 1461 mPointerController = getPolicy()->obtainPointerController(getDeviceId()); 1462 break; 1463 case Parameters::MODE_NAVIGATION: 1464 mSource = AINPUT_SOURCE_TRACKBALL; 1465 mXPrecision = TRACKBALL_MOVEMENT_THRESHOLD; 1466 mYPrecision = TRACKBALL_MOVEMENT_THRESHOLD; 1467 mXScale = 1.0f / TRACKBALL_MOVEMENT_THRESHOLD; 1468 mYScale = 1.0f / TRACKBALL_MOVEMENT_THRESHOLD; 1469 break; 1470 } 1471 1472 mVWheelScale = 1.0f; 1473 mHWheelScale = 1.0f; 1474 1475 mHaveVWheel = getEventHub()->hasRelativeAxis(getDeviceId(), REL_WHEEL); 1476 mHaveHWheel = getEventHub()->hasRelativeAxis(getDeviceId(), REL_HWHEEL); 1477 } 1478 1479 if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_SPEED)) { 1480 mPointerVelocityControl.setParameters(config->pointerVelocityControlParameters); 1481 mWheelXVelocityControl.setParameters(config->wheelVelocityControlParameters); 1482 mWheelYVelocityControl.setParameters(config->wheelVelocityControlParameters); 1483 } 1484} 1485 1486void CursorInputMapper::configureParameters() { 1487 mParameters.mode = Parameters::MODE_POINTER; 1488 String8 cursorModeString; 1489 if (getDevice()->getConfiguration().tryGetProperty(String8("cursor.mode"), cursorModeString)) { 1490 if (cursorModeString == "navigation") { 1491 mParameters.mode = Parameters::MODE_NAVIGATION; 1492 } else if (cursorModeString != "pointer" && cursorModeString != "default") { 1493 LOGW("Invalid value for cursor.mode: '%s'", cursorModeString.string()); 1494 } 1495 } 1496 1497 mParameters.orientationAware = false; 1498 getDevice()->getConfiguration().tryGetProperty(String8("cursor.orientationAware"), 1499 mParameters.orientationAware); 1500 1501 mParameters.associatedDisplayId = mParameters.mode == Parameters::MODE_POINTER 1502 || mParameters.orientationAware ? 0 : -1; 1503} 1504 1505void CursorInputMapper::dumpParameters(String8& dump) { 1506 dump.append(INDENT3 "Parameters:\n"); 1507 dump.appendFormat(INDENT4 "AssociatedDisplayId: %d\n", 1508 mParameters.associatedDisplayId); 1509 1510 switch (mParameters.mode) { 1511 case Parameters::MODE_POINTER: 1512 dump.append(INDENT4 "Mode: pointer\n"); 1513 break; 1514 case Parameters::MODE_NAVIGATION: 1515 dump.append(INDENT4 "Mode: navigation\n"); 1516 break; 1517 default: 1518 LOG_ASSERT(false); 1519 } 1520 1521 dump.appendFormat(INDENT4 "OrientationAware: %s\n", 1522 toString(mParameters.orientationAware)); 1523} 1524 1525void CursorInputMapper::initializeLocked() { 1526 mAccumulator.clear(); 1527 1528 mLocked.buttonState = 0; 1529 mLocked.downTime = 0; 1530} 1531 1532void CursorInputMapper::reset() { 1533 for (;;) { 1534 int32_t buttonState; 1535 { // acquire lock 1536 AutoMutex _l(mLock); 1537 1538 buttonState = mLocked.buttonState; 1539 if (!buttonState) { 1540 initializeLocked(); 1541 break; // done 1542 } 1543 } // release lock 1544 1545 // Reset velocity. 1546 mPointerVelocityControl.reset(); 1547 mWheelXVelocityControl.reset(); 1548 mWheelYVelocityControl.reset(); 1549 1550 // Synthesize button up event on reset. 1551 nsecs_t when = systemTime(SYSTEM_TIME_MONOTONIC); 1552 mAccumulator.clear(); 1553 mAccumulator.buttonDown = 0; 1554 mAccumulator.buttonUp = buttonState; 1555 mAccumulator.fields = Accumulator::FIELD_BUTTONS; 1556 sync(when); 1557 } 1558 1559 InputMapper::reset(); 1560} 1561 1562void CursorInputMapper::process(const RawEvent* rawEvent) { 1563 switch (rawEvent->type) { 1564 case EV_KEY: { 1565 int32_t buttonState = getButtonStateForScanCode(rawEvent->scanCode); 1566 if (buttonState) { 1567 if (rawEvent->value) { 1568 mAccumulator.buttonDown = buttonState; 1569 mAccumulator.buttonUp = 0; 1570 } else { 1571 mAccumulator.buttonDown = 0; 1572 mAccumulator.buttonUp = buttonState; 1573 } 1574 mAccumulator.fields |= Accumulator::FIELD_BUTTONS; 1575 1576 // Sync now since BTN_MOUSE is not necessarily followed by SYN_REPORT and 1577 // we need to ensure that we report the up/down promptly. 1578 sync(rawEvent->when); 1579 break; 1580 } 1581 break; 1582 } 1583 1584 case EV_REL: 1585 switch (rawEvent->scanCode) { 1586 case REL_X: 1587 mAccumulator.fields |= Accumulator::FIELD_REL_X; 1588 mAccumulator.relX = rawEvent->value; 1589 break; 1590 case REL_Y: 1591 mAccumulator.fields |= Accumulator::FIELD_REL_Y; 1592 mAccumulator.relY = rawEvent->value; 1593 break; 1594 case REL_WHEEL: 1595 mAccumulator.fields |= Accumulator::FIELD_REL_WHEEL; 1596 mAccumulator.relWheel = rawEvent->value; 1597 break; 1598 case REL_HWHEEL: 1599 mAccumulator.fields |= Accumulator::FIELD_REL_HWHEEL; 1600 mAccumulator.relHWheel = rawEvent->value; 1601 break; 1602 } 1603 break; 1604 1605 case EV_SYN: 1606 switch (rawEvent->scanCode) { 1607 case SYN_REPORT: 1608 sync(rawEvent->when); 1609 break; 1610 } 1611 break; 1612 } 1613} 1614 1615void CursorInputMapper::sync(nsecs_t when) { 1616 uint32_t fields = mAccumulator.fields; 1617 if (fields == 0) { 1618 return; // no new state changes, so nothing to do 1619 } 1620 1621 int32_t motionEventAction; 1622 int32_t motionEventEdgeFlags; 1623 int32_t lastButtonState, currentButtonState; 1624 PointerProperties pointerProperties; 1625 PointerCoords pointerCoords; 1626 nsecs_t downTime; 1627 float vscroll, hscroll; 1628 { // acquire lock 1629 AutoMutex _l(mLock); 1630 1631 lastButtonState = mLocked.buttonState; 1632 1633 bool down, downChanged; 1634 bool wasDown = isPointerDown(mLocked.buttonState); 1635 bool buttonsChanged = fields & Accumulator::FIELD_BUTTONS; 1636 if (buttonsChanged) { 1637 mLocked.buttonState = (mLocked.buttonState | mAccumulator.buttonDown) 1638 & ~mAccumulator.buttonUp; 1639 1640 down = isPointerDown(mLocked.buttonState); 1641 1642 if (!wasDown && down) { 1643 mLocked.downTime = when; 1644 downChanged = true; 1645 } else if (wasDown && !down) { 1646 downChanged = true; 1647 } else { 1648 downChanged = false; 1649 } 1650 } else { 1651 down = wasDown; 1652 downChanged = false; 1653 } 1654 1655 currentButtonState = mLocked.buttonState; 1656 1657 downTime = mLocked.downTime; 1658 float deltaX = fields & Accumulator::FIELD_REL_X ? mAccumulator.relX * mXScale : 0.0f; 1659 float deltaY = fields & Accumulator::FIELD_REL_Y ? mAccumulator.relY * mYScale : 0.0f; 1660 1661 if (downChanged) { 1662 motionEventAction = down ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 1663 } else if (down || mPointerController == NULL) { 1664 motionEventAction = AMOTION_EVENT_ACTION_MOVE; 1665 } else { 1666 motionEventAction = AMOTION_EVENT_ACTION_HOVER_MOVE; 1667 } 1668 1669 if (mParameters.orientationAware && mParameters.associatedDisplayId >= 0 1670 && (deltaX != 0.0f || deltaY != 0.0f)) { 1671 // Rotate motion based on display orientation if needed. 1672 // Note: getDisplayInfo is non-reentrant so we can continue holding the lock. 1673 int32_t orientation; 1674 if (! getPolicy()->getDisplayInfo(mParameters.associatedDisplayId, 1675 NULL, NULL, & orientation)) { 1676 orientation = DISPLAY_ORIENTATION_0; 1677 } 1678 1679 float temp; 1680 switch (orientation) { 1681 case DISPLAY_ORIENTATION_90: 1682 temp = deltaX; 1683 deltaX = deltaY; 1684 deltaY = -temp; 1685 break; 1686 1687 case DISPLAY_ORIENTATION_180: 1688 deltaX = -deltaX; 1689 deltaY = -deltaY; 1690 break; 1691 1692 case DISPLAY_ORIENTATION_270: 1693 temp = deltaX; 1694 deltaX = -deltaY; 1695 deltaY = temp; 1696 break; 1697 } 1698 } 1699 1700 motionEventEdgeFlags = AMOTION_EVENT_EDGE_FLAG_NONE; 1701 1702 pointerProperties.clear(); 1703 pointerProperties.id = 0; 1704 pointerProperties.toolType = AMOTION_EVENT_TOOL_TYPE_MOUSE; 1705 1706 pointerCoords.clear(); 1707 1708 if (mHaveVWheel && (fields & Accumulator::FIELD_REL_WHEEL)) { 1709 vscroll = mAccumulator.relWheel; 1710 } else { 1711 vscroll = 0; 1712 } 1713 mWheelYVelocityControl.move(when, NULL, &vscroll); 1714 1715 if (mHaveHWheel && (fields & Accumulator::FIELD_REL_HWHEEL)) { 1716 hscroll = mAccumulator.relHWheel; 1717 } else { 1718 hscroll = 0; 1719 } 1720 mWheelXVelocityControl.move(when, &hscroll, NULL); 1721 1722 mPointerVelocityControl.move(when, &deltaX, &deltaY); 1723 1724 if (mPointerController != NULL) { 1725 if (deltaX != 0 || deltaY != 0 || vscroll != 0 || hscroll != 0 1726 || buttonsChanged) { 1727 mPointerController->setPresentation( 1728 PointerControllerInterface::PRESENTATION_POINTER); 1729 1730 if (deltaX != 0 || deltaY != 0) { 1731 mPointerController->move(deltaX, deltaY); 1732 } 1733 1734 if (buttonsChanged) { 1735 mPointerController->setButtonState(mLocked.buttonState); 1736 } 1737 1738 mPointerController->unfade(PointerControllerInterface::TRANSITION_IMMEDIATE); 1739 } 1740 1741 float x, y; 1742 mPointerController->getPosition(&x, &y); 1743 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_X, x); 1744 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, y); 1745 1746 if (motionEventAction == AMOTION_EVENT_ACTION_DOWN) { 1747 motionEventEdgeFlags = calculateEdgeFlagsUsingPointerBounds( 1748 mPointerController, x, y); 1749 } 1750 } else { 1751 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_X, deltaX); 1752 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, deltaY); 1753 } 1754 1755 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, down ? 1.0f : 0.0f); 1756 } // release lock 1757 1758 // Moving an external trackball or mouse should wake the device. 1759 // We don't do this for internal cursor devices to prevent them from waking up 1760 // the device in your pocket. 1761 // TODO: Use the input device configuration to control this behavior more finely. 1762 uint32_t policyFlags = 0; 1763 if (getDevice()->isExternal()) { 1764 policyFlags |= POLICY_FLAG_WAKE_DROPPED; 1765 } 1766 1767 // Synthesize key down from buttons if needed. 1768 synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_DOWN, when, getDeviceId(), mSource, 1769 policyFlags, lastButtonState, currentButtonState); 1770 1771 // Send motion event. 1772 int32_t metaState = mContext->getGlobalMetaState(); 1773 getDispatcher()->notifyMotion(when, getDeviceId(), mSource, policyFlags, 1774 motionEventAction, 0, metaState, currentButtonState, motionEventEdgeFlags, 1775 1, &pointerProperties, &pointerCoords, mXPrecision, mYPrecision, downTime); 1776 1777 // Send hover move after UP to tell the application that the mouse is hovering now. 1778 if (motionEventAction == AMOTION_EVENT_ACTION_UP 1779 && mPointerController != NULL) { 1780 getDispatcher()->notifyMotion(when, getDeviceId(), mSource, policyFlags, 1781 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 1782 metaState, currentButtonState, AMOTION_EVENT_EDGE_FLAG_NONE, 1783 1, &pointerProperties, &pointerCoords, mXPrecision, mYPrecision, downTime); 1784 } 1785 1786 // Send scroll events. 1787 if (vscroll != 0 || hscroll != 0) { 1788 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_VSCROLL, vscroll); 1789 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_HSCROLL, hscroll); 1790 1791 getDispatcher()->notifyMotion(when, getDeviceId(), mSource, policyFlags, 1792 AMOTION_EVENT_ACTION_SCROLL, 0, metaState, currentButtonState, 1793 AMOTION_EVENT_EDGE_FLAG_NONE, 1794 1, &pointerProperties, &pointerCoords, mXPrecision, mYPrecision, downTime); 1795 } 1796 1797 // Synthesize key up from buttons if needed. 1798 synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_UP, when, getDeviceId(), mSource, 1799 policyFlags, lastButtonState, currentButtonState); 1800 1801 mAccumulator.clear(); 1802} 1803 1804int32_t CursorInputMapper::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { 1805 if (scanCode >= BTN_MOUSE && scanCode < BTN_JOYSTICK) { 1806 return getEventHub()->getScanCodeState(getDeviceId(), scanCode); 1807 } else { 1808 return AKEY_STATE_UNKNOWN; 1809 } 1810} 1811 1812void CursorInputMapper::fadePointer() { 1813 { // acquire lock 1814 AutoMutex _l(mLock); 1815 if (mPointerController != NULL) { 1816 mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL); 1817 } 1818 } // release lock 1819} 1820 1821 1822// --- TouchInputMapper --- 1823 1824TouchInputMapper::TouchInputMapper(InputDevice* device) : 1825 InputMapper(device) { 1826 mLocked.surfaceOrientation = -1; 1827 mLocked.surfaceWidth = -1; 1828 mLocked.surfaceHeight = -1; 1829 1830 initializeLocked(); 1831} 1832 1833TouchInputMapper::~TouchInputMapper() { 1834} 1835 1836uint32_t TouchInputMapper::getSources() { 1837 return mTouchSource | mPointerSource; 1838} 1839 1840void TouchInputMapper::populateDeviceInfo(InputDeviceInfo* info) { 1841 InputMapper::populateDeviceInfo(info); 1842 1843 { // acquire lock 1844 AutoMutex _l(mLock); 1845 1846 // Ensure surface information is up to date so that orientation changes are 1847 // noticed immediately. 1848 if (!configureSurfaceLocked()) { 1849 return; 1850 } 1851 1852 info->addMotionRange(mLocked.orientedRanges.x); 1853 info->addMotionRange(mLocked.orientedRanges.y); 1854 1855 if (mLocked.orientedRanges.havePressure) { 1856 info->addMotionRange(mLocked.orientedRanges.pressure); 1857 } 1858 1859 if (mLocked.orientedRanges.haveSize) { 1860 info->addMotionRange(mLocked.orientedRanges.size); 1861 } 1862 1863 if (mLocked.orientedRanges.haveTouchSize) { 1864 info->addMotionRange(mLocked.orientedRanges.touchMajor); 1865 info->addMotionRange(mLocked.orientedRanges.touchMinor); 1866 } 1867 1868 if (mLocked.orientedRanges.haveToolSize) { 1869 info->addMotionRange(mLocked.orientedRanges.toolMajor); 1870 info->addMotionRange(mLocked.orientedRanges.toolMinor); 1871 } 1872 1873 if (mLocked.orientedRanges.haveOrientation) { 1874 info->addMotionRange(mLocked.orientedRanges.orientation); 1875 } 1876 1877 if (mLocked.orientedRanges.haveDistance) { 1878 info->addMotionRange(mLocked.orientedRanges.distance); 1879 } 1880 1881 if (mPointerController != NULL) { 1882 float minX, minY, maxX, maxY; 1883 if (mPointerController->getBounds(&minX, &minY, &maxX, &maxY)) { 1884 info->addMotionRange(AMOTION_EVENT_AXIS_X, mPointerSource, 1885 minX, maxX, 0.0f, 0.0f); 1886 info->addMotionRange(AMOTION_EVENT_AXIS_Y, mPointerSource, 1887 minY, maxY, 0.0f, 0.0f); 1888 } 1889 info->addMotionRange(AMOTION_EVENT_AXIS_PRESSURE, mPointerSource, 1890 0.0f, 1.0f, 0.0f, 0.0f); 1891 } 1892 } // release lock 1893} 1894 1895void TouchInputMapper::dump(String8& dump) { 1896 { // acquire lock 1897 AutoMutex _l(mLock); 1898 dump.append(INDENT2 "Touch Input Mapper:\n"); 1899 dumpParameters(dump); 1900 dumpVirtualKeysLocked(dump); 1901 dumpRawAxes(dump); 1902 dumpCalibration(dump); 1903 dumpSurfaceLocked(dump); 1904 1905 dump.appendFormat(INDENT3 "Translation and Scaling Factors:\n"); 1906 dump.appendFormat(INDENT4 "XScale: %0.3f\n", mLocked.xScale); 1907 dump.appendFormat(INDENT4 "YScale: %0.3f\n", mLocked.yScale); 1908 dump.appendFormat(INDENT4 "XPrecision: %0.3f\n", mLocked.xPrecision); 1909 dump.appendFormat(INDENT4 "YPrecision: %0.3f\n", mLocked.yPrecision); 1910 dump.appendFormat(INDENT4 "GeometricScale: %0.3f\n", mLocked.geometricScale); 1911 dump.appendFormat(INDENT4 "ToolSizeLinearScale: %0.3f\n", mLocked.toolSizeLinearScale); 1912 dump.appendFormat(INDENT4 "ToolSizeLinearBias: %0.3f\n", mLocked.toolSizeLinearBias); 1913 dump.appendFormat(INDENT4 "ToolSizeAreaScale: %0.3f\n", mLocked.toolSizeAreaScale); 1914 dump.appendFormat(INDENT4 "ToolSizeAreaBias: %0.3f\n", mLocked.toolSizeAreaBias); 1915 dump.appendFormat(INDENT4 "PressureScale: %0.3f\n", mLocked.pressureScale); 1916 dump.appendFormat(INDENT4 "SizeScale: %0.3f\n", mLocked.sizeScale); 1917 dump.appendFormat(INDENT4 "OrientationScale: %0.3f\n", mLocked.orientationScale); 1918 dump.appendFormat(INDENT4 "DistanceScale: %0.3f\n", mLocked.distanceScale); 1919 1920 dump.appendFormat(INDENT3 "Last Touch:\n"); 1921 dump.appendFormat(INDENT4 "Button State: 0x%08x\n", mLastTouch.buttonState); 1922 dump.appendFormat(INDENT4 "Pointer Count: %d\n", mLastTouch.pointerCount); 1923 for (uint32_t i = 0; i < mLastTouch.pointerCount; i++) { 1924 const PointerData& pointer = mLastTouch.pointers[i]; 1925 dump.appendFormat(INDENT5 "[%d]: id=%d, x=%d, y=%d, pressure=%d, " 1926 "touchMajor=%d, touchMinor=%d, toolMajor=%d, toolMinor=%d, " 1927 "orientation=%d, distance=%d, isStylus=%s\n", i, 1928 pointer.id, pointer.x, pointer.y, pointer.pressure, 1929 pointer.touchMajor, pointer.touchMinor, pointer.toolMajor, pointer.toolMinor, 1930 pointer.orientation, pointer.distance, toString(pointer.isStylus)); 1931 } 1932 1933 if (mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER) { 1934 dump.appendFormat(INDENT3 "Pointer Gesture Detector:\n"); 1935 dump.appendFormat(INDENT4 "XMovementScale: %0.3f\n", 1936 mLocked.pointerGestureXMovementScale); 1937 dump.appendFormat(INDENT4 "YMovementScale: %0.3f\n", 1938 mLocked.pointerGestureYMovementScale); 1939 dump.appendFormat(INDENT4 "XZoomScale: %0.3f\n", 1940 mLocked.pointerGestureXZoomScale); 1941 dump.appendFormat(INDENT4 "YZoomScale: %0.3f\n", 1942 mLocked.pointerGestureYZoomScale); 1943 dump.appendFormat(INDENT4 "MaxSwipeWidth: %f\n", 1944 mLocked.pointerGestureMaxSwipeWidth); 1945 } 1946 } // release lock 1947} 1948 1949void TouchInputMapper::initializeLocked() { 1950 mCurrentTouch.clear(); 1951 mLastTouch.clear(); 1952 mDownTime = 0; 1953 1954 mLocked.currentVirtualKey.down = false; 1955 1956 mLocked.orientedRanges.havePressure = false; 1957 mLocked.orientedRanges.haveSize = false; 1958 mLocked.orientedRanges.haveTouchSize = false; 1959 mLocked.orientedRanges.haveToolSize = false; 1960 mLocked.orientedRanges.haveOrientation = false; 1961 mLocked.orientedRanges.haveDistance = false; 1962 1963 mPointerGesture.reset(); 1964} 1965 1966void TouchInputMapper::configure(const InputReaderConfiguration* config, uint32_t changes) { 1967 InputMapper::configure(config, changes); 1968 1969 mConfig = *config; 1970 1971 if (!changes) { // first time only 1972 // Configure basic parameters. 1973 configureParameters(); 1974 1975 // Configure sources. 1976 switch (mParameters.deviceType) { 1977 case Parameters::DEVICE_TYPE_TOUCH_SCREEN: 1978 mTouchSource = AINPUT_SOURCE_TOUCHSCREEN; 1979 mPointerSource = 0; 1980 break; 1981 case Parameters::DEVICE_TYPE_TOUCH_PAD: 1982 mTouchSource = AINPUT_SOURCE_TOUCHPAD; 1983 mPointerSource = 0; 1984 break; 1985 case Parameters::DEVICE_TYPE_POINTER: 1986 mTouchSource = AINPUT_SOURCE_TOUCHPAD; 1987 mPointerSource = AINPUT_SOURCE_MOUSE; 1988 break; 1989 default: 1990 LOG_ASSERT(false); 1991 } 1992 1993 // Configure absolute axis information. 1994 configureRawAxes(); 1995 1996 // Prepare input device calibration. 1997 parseCalibration(); 1998 resolveCalibration(); 1999 2000 { // acquire lock 2001 AutoMutex _l(mLock); 2002 2003 // Configure surface dimensions and orientation. 2004 configureSurfaceLocked(); 2005 } // release lock 2006 } 2007 2008 if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_SPEED)) { 2009 mPointerGesture.pointerVelocityControl.setParameters( 2010 mConfig.pointerVelocityControlParameters); 2011 } 2012 2013 if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_GESTURE_ENABLEMENT)) { 2014 // Reset the touch screen when pointer gesture enablement changes. 2015 reset(); 2016 } 2017} 2018 2019void TouchInputMapper::configureParameters() { 2020 // Use the pointer presentation mode for devices that do not support distinct 2021 // multitouch. The spot-based presentation relies on being able to accurately 2022 // locate two or more fingers on the touch pad. 2023 mParameters.gestureMode = getEventHub()->hasInputProperty(getDeviceId(), INPUT_PROP_SEMI_MT) 2024 ? Parameters::GESTURE_MODE_POINTER : Parameters::GESTURE_MODE_SPOTS; 2025 2026 String8 gestureModeString; 2027 if (getDevice()->getConfiguration().tryGetProperty(String8("touch.gestureMode"), 2028 gestureModeString)) { 2029 if (gestureModeString == "pointer") { 2030 mParameters.gestureMode = Parameters::GESTURE_MODE_POINTER; 2031 } else if (gestureModeString == "spots") { 2032 mParameters.gestureMode = Parameters::GESTURE_MODE_SPOTS; 2033 } else if (gestureModeString != "default") { 2034 LOGW("Invalid value for touch.gestureMode: '%s'", gestureModeString.string()); 2035 } 2036 } 2037 2038 if (getEventHub()->hasRelativeAxis(getDeviceId(), REL_X) 2039 || getEventHub()->hasRelativeAxis(getDeviceId(), REL_Y)) { 2040 // The device is a cursor device with a touch pad attached. 2041 // By default don't use the touch pad to move the pointer. 2042 mParameters.deviceType = Parameters::DEVICE_TYPE_TOUCH_PAD; 2043 } else if (getEventHub()->hasInputProperty(getDeviceId(), INPUT_PROP_POINTER)) { 2044 // The device is a pointing device like a track pad. 2045 mParameters.deviceType = Parameters::DEVICE_TYPE_POINTER; 2046 } else if (getEventHub()->hasInputProperty(getDeviceId(), INPUT_PROP_DIRECT)) { 2047 // The device is a touch screen. 2048 mParameters.deviceType = Parameters::DEVICE_TYPE_TOUCH_SCREEN; 2049 } else { 2050 // The device is a touch pad of unknown purpose. 2051 mParameters.deviceType = Parameters::DEVICE_TYPE_POINTER; 2052 } 2053 2054 String8 deviceTypeString; 2055 if (getDevice()->getConfiguration().tryGetProperty(String8("touch.deviceType"), 2056 deviceTypeString)) { 2057 if (deviceTypeString == "touchScreen") { 2058 mParameters.deviceType = Parameters::DEVICE_TYPE_TOUCH_SCREEN; 2059 } else if (deviceTypeString == "touchPad") { 2060 mParameters.deviceType = Parameters::DEVICE_TYPE_TOUCH_PAD; 2061 } else if (deviceTypeString == "pointer") { 2062 mParameters.deviceType = Parameters::DEVICE_TYPE_POINTER; 2063 } else if (deviceTypeString != "default") { 2064 LOGW("Invalid value for touch.deviceType: '%s'", deviceTypeString.string()); 2065 } 2066 } 2067 2068 mParameters.orientationAware = mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN; 2069 getDevice()->getConfiguration().tryGetProperty(String8("touch.orientationAware"), 2070 mParameters.orientationAware); 2071 2072 mParameters.associatedDisplayId = mParameters.orientationAware 2073 || mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN 2074 || mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER 2075 ? 0 : -1; 2076} 2077 2078void TouchInputMapper::dumpParameters(String8& dump) { 2079 dump.append(INDENT3 "Parameters:\n"); 2080 2081 switch (mParameters.gestureMode) { 2082 case Parameters::GESTURE_MODE_POINTER: 2083 dump.append(INDENT4 "GestureMode: pointer\n"); 2084 break; 2085 case Parameters::GESTURE_MODE_SPOTS: 2086 dump.append(INDENT4 "GestureMode: spots\n"); 2087 break; 2088 default: 2089 assert(false); 2090 } 2091 2092 switch (mParameters.deviceType) { 2093 case Parameters::DEVICE_TYPE_TOUCH_SCREEN: 2094 dump.append(INDENT4 "DeviceType: touchScreen\n"); 2095 break; 2096 case Parameters::DEVICE_TYPE_TOUCH_PAD: 2097 dump.append(INDENT4 "DeviceType: touchPad\n"); 2098 break; 2099 case Parameters::DEVICE_TYPE_POINTER: 2100 dump.append(INDENT4 "DeviceType: pointer\n"); 2101 break; 2102 default: 2103 LOG_ASSERT(false); 2104 } 2105 2106 dump.appendFormat(INDENT4 "AssociatedDisplayId: %d\n", 2107 mParameters.associatedDisplayId); 2108 dump.appendFormat(INDENT4 "OrientationAware: %s\n", 2109 toString(mParameters.orientationAware)); 2110} 2111 2112void TouchInputMapper::configureRawAxes() { 2113 mRawAxes.x.clear(); 2114 mRawAxes.y.clear(); 2115 mRawAxes.pressure.clear(); 2116 mRawAxes.touchMajor.clear(); 2117 mRawAxes.touchMinor.clear(); 2118 mRawAxes.toolMajor.clear(); 2119 mRawAxes.toolMinor.clear(); 2120 mRawAxes.orientation.clear(); 2121 mRawAxes.distance.clear(); 2122 mRawAxes.trackingId.clear(); 2123 mRawAxes.slot.clear(); 2124} 2125 2126void TouchInputMapper::dumpRawAxes(String8& dump) { 2127 dump.append(INDENT3 "Raw Axes:\n"); 2128 dumpRawAbsoluteAxisInfo(dump, mRawAxes.x, "X"); 2129 dumpRawAbsoluteAxisInfo(dump, mRawAxes.y, "Y"); 2130 dumpRawAbsoluteAxisInfo(dump, mRawAxes.pressure, "Pressure"); 2131 dumpRawAbsoluteAxisInfo(dump, mRawAxes.touchMajor, "TouchMajor"); 2132 dumpRawAbsoluteAxisInfo(dump, mRawAxes.touchMinor, "TouchMinor"); 2133 dumpRawAbsoluteAxisInfo(dump, mRawAxes.toolMajor, "ToolMajor"); 2134 dumpRawAbsoluteAxisInfo(dump, mRawAxes.toolMinor, "ToolMinor"); 2135 dumpRawAbsoluteAxisInfo(dump, mRawAxes.orientation, "Orientation"); 2136 dumpRawAbsoluteAxisInfo(dump, mRawAxes.distance, "Distance"); 2137 dumpRawAbsoluteAxisInfo(dump, mRawAxes.trackingId, "TrackingId"); 2138 dumpRawAbsoluteAxisInfo(dump, mRawAxes.slot, "Slot"); 2139} 2140 2141bool TouchInputMapper::configureSurfaceLocked() { 2142 // Ensure we have valid X and Y axes. 2143 if (!mRawAxes.x.valid || !mRawAxes.y.valid) { 2144 LOGW(INDENT "Touch device '%s' did not report support for X or Y axis! " 2145 "The device will be inoperable.", getDeviceName().string()); 2146 return false; 2147 } 2148 2149 // Update orientation and dimensions if needed. 2150 int32_t orientation = DISPLAY_ORIENTATION_0; 2151 int32_t width = mRawAxes.x.maxValue - mRawAxes.x.minValue + 1; 2152 int32_t height = mRawAxes.y.maxValue - mRawAxes.y.minValue + 1; 2153 2154 if (mParameters.associatedDisplayId >= 0) { 2155 // Note: getDisplayInfo is non-reentrant so we can continue holding the lock. 2156 if (! getPolicy()->getDisplayInfo(mParameters.associatedDisplayId, 2157 &mLocked.associatedDisplayWidth, &mLocked.associatedDisplayHeight, 2158 &mLocked.associatedDisplayOrientation)) { 2159 return false; 2160 } 2161 2162 // A touch screen inherits the dimensions of the display. 2163 if (mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN) { 2164 width = mLocked.associatedDisplayWidth; 2165 height = mLocked.associatedDisplayHeight; 2166 } 2167 2168 // The device inherits the orientation of the display if it is orientation aware. 2169 if (mParameters.orientationAware) { 2170 orientation = mLocked.associatedDisplayOrientation; 2171 } 2172 } 2173 2174 if (mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER 2175 && mPointerController == NULL) { 2176 mPointerController = getPolicy()->obtainPointerController(getDeviceId()); 2177 } 2178 2179 bool orientationChanged = mLocked.surfaceOrientation != orientation; 2180 if (orientationChanged) { 2181 mLocked.surfaceOrientation = orientation; 2182 } 2183 2184 bool sizeChanged = mLocked.surfaceWidth != width || mLocked.surfaceHeight != height; 2185 if (sizeChanged) { 2186 LOGI("Device reconfigured: id=%d, name='%s', surface size is now %dx%d", 2187 getDeviceId(), getDeviceName().string(), width, height); 2188 2189 mLocked.surfaceWidth = width; 2190 mLocked.surfaceHeight = height; 2191 2192 // Configure X and Y factors. 2193 mLocked.xScale = float(width) / (mRawAxes.x.maxValue - mRawAxes.x.minValue + 1); 2194 mLocked.yScale = float(height) / (mRawAxes.y.maxValue - mRawAxes.y.minValue + 1); 2195 mLocked.xPrecision = 1.0f / mLocked.xScale; 2196 mLocked.yPrecision = 1.0f / mLocked.yScale; 2197 2198 mLocked.orientedRanges.x.axis = AMOTION_EVENT_AXIS_X; 2199 mLocked.orientedRanges.x.source = mTouchSource; 2200 mLocked.orientedRanges.y.axis = AMOTION_EVENT_AXIS_Y; 2201 mLocked.orientedRanges.y.source = mTouchSource; 2202 2203 configureVirtualKeysLocked(); 2204 2205 // Scale factor for terms that are not oriented in a particular axis. 2206 // If the pixels are square then xScale == yScale otherwise we fake it 2207 // by choosing an average. 2208 mLocked.geometricScale = avg(mLocked.xScale, mLocked.yScale); 2209 2210 // Size of diagonal axis. 2211 float diagonalSize = hypotf(width, height); 2212 2213 // TouchMajor and TouchMinor factors. 2214 if (mCalibration.touchSizeCalibration != Calibration::TOUCH_SIZE_CALIBRATION_NONE) { 2215 mLocked.orientedRanges.haveTouchSize = true; 2216 2217 mLocked.orientedRanges.touchMajor.axis = AMOTION_EVENT_AXIS_TOUCH_MAJOR; 2218 mLocked.orientedRanges.touchMajor.source = mTouchSource; 2219 mLocked.orientedRanges.touchMajor.min = 0; 2220 mLocked.orientedRanges.touchMajor.max = diagonalSize; 2221 mLocked.orientedRanges.touchMajor.flat = 0; 2222 mLocked.orientedRanges.touchMajor.fuzz = 0; 2223 2224 mLocked.orientedRanges.touchMinor = mLocked.orientedRanges.touchMajor; 2225 mLocked.orientedRanges.touchMinor.axis = AMOTION_EVENT_AXIS_TOUCH_MINOR; 2226 } 2227 2228 // ToolMajor and ToolMinor factors. 2229 mLocked.toolSizeLinearScale = 0; 2230 mLocked.toolSizeLinearBias = 0; 2231 mLocked.toolSizeAreaScale = 0; 2232 mLocked.toolSizeAreaBias = 0; 2233 if (mCalibration.toolSizeCalibration != Calibration::TOOL_SIZE_CALIBRATION_NONE) { 2234 if (mCalibration.toolSizeCalibration == Calibration::TOOL_SIZE_CALIBRATION_LINEAR) { 2235 if (mCalibration.haveToolSizeLinearScale) { 2236 mLocked.toolSizeLinearScale = mCalibration.toolSizeLinearScale; 2237 } else if (mRawAxes.toolMajor.valid && mRawAxes.toolMajor.maxValue != 0) { 2238 mLocked.toolSizeLinearScale = float(min(width, height)) 2239 / mRawAxes.toolMajor.maxValue; 2240 } 2241 2242 if (mCalibration.haveToolSizeLinearBias) { 2243 mLocked.toolSizeLinearBias = mCalibration.toolSizeLinearBias; 2244 } 2245 } else if (mCalibration.toolSizeCalibration == 2246 Calibration::TOOL_SIZE_CALIBRATION_AREA) { 2247 if (mCalibration.haveToolSizeLinearScale) { 2248 mLocked.toolSizeLinearScale = mCalibration.toolSizeLinearScale; 2249 } else { 2250 mLocked.toolSizeLinearScale = min(width, height); 2251 } 2252 2253 if (mCalibration.haveToolSizeLinearBias) { 2254 mLocked.toolSizeLinearBias = mCalibration.toolSizeLinearBias; 2255 } 2256 2257 if (mCalibration.haveToolSizeAreaScale) { 2258 mLocked.toolSizeAreaScale = mCalibration.toolSizeAreaScale; 2259 } else if (mRawAxes.toolMajor.valid && mRawAxes.toolMajor.maxValue != 0) { 2260 mLocked.toolSizeAreaScale = 1.0f / mRawAxes.toolMajor.maxValue; 2261 } 2262 2263 if (mCalibration.haveToolSizeAreaBias) { 2264 mLocked.toolSizeAreaBias = mCalibration.toolSizeAreaBias; 2265 } 2266 } 2267 2268 mLocked.orientedRanges.haveToolSize = true; 2269 2270 mLocked.orientedRanges.toolMajor.axis = AMOTION_EVENT_AXIS_TOOL_MAJOR; 2271 mLocked.orientedRanges.toolMajor.source = mTouchSource; 2272 mLocked.orientedRanges.toolMajor.min = 0; 2273 mLocked.orientedRanges.toolMajor.max = diagonalSize; 2274 mLocked.orientedRanges.toolMajor.flat = 0; 2275 mLocked.orientedRanges.toolMajor.fuzz = 0; 2276 2277 mLocked.orientedRanges.toolMinor = mLocked.orientedRanges.toolMajor; 2278 mLocked.orientedRanges.toolMinor.axis = AMOTION_EVENT_AXIS_TOOL_MINOR; 2279 } 2280 2281 // Pressure factors. 2282 mLocked.pressureScale = 0; 2283 if (mCalibration.pressureCalibration != Calibration::PRESSURE_CALIBRATION_NONE) { 2284 RawAbsoluteAxisInfo rawPressureAxis; 2285 switch (mCalibration.pressureSource) { 2286 case Calibration::PRESSURE_SOURCE_PRESSURE: 2287 rawPressureAxis = mRawAxes.pressure; 2288 break; 2289 case Calibration::PRESSURE_SOURCE_TOUCH: 2290 rawPressureAxis = mRawAxes.touchMajor; 2291 break; 2292 default: 2293 rawPressureAxis.clear(); 2294 } 2295 2296 if (mCalibration.pressureCalibration == Calibration::PRESSURE_CALIBRATION_PHYSICAL 2297 || mCalibration.pressureCalibration 2298 == Calibration::PRESSURE_CALIBRATION_AMPLITUDE) { 2299 if (mCalibration.havePressureScale) { 2300 mLocked.pressureScale = mCalibration.pressureScale; 2301 } else if (rawPressureAxis.valid && rawPressureAxis.maxValue != 0) { 2302 mLocked.pressureScale = 1.0f / rawPressureAxis.maxValue; 2303 } 2304 } 2305 2306 mLocked.orientedRanges.havePressure = true; 2307 2308 mLocked.orientedRanges.pressure.axis = AMOTION_EVENT_AXIS_PRESSURE; 2309 mLocked.orientedRanges.pressure.source = mTouchSource; 2310 mLocked.orientedRanges.pressure.min = 0; 2311 mLocked.orientedRanges.pressure.max = 1.0; 2312 mLocked.orientedRanges.pressure.flat = 0; 2313 mLocked.orientedRanges.pressure.fuzz = 0; 2314 } 2315 2316 // Size factors. 2317 mLocked.sizeScale = 0; 2318 if (mCalibration.sizeCalibration != Calibration::SIZE_CALIBRATION_NONE) { 2319 if (mCalibration.sizeCalibration == Calibration::SIZE_CALIBRATION_NORMALIZED) { 2320 if (mRawAxes.toolMajor.valid && mRawAxes.toolMajor.maxValue != 0) { 2321 mLocked.sizeScale = 1.0f / mRawAxes.toolMajor.maxValue; 2322 } 2323 } 2324 2325 mLocked.orientedRanges.haveSize = true; 2326 2327 mLocked.orientedRanges.size.axis = AMOTION_EVENT_AXIS_SIZE; 2328 mLocked.orientedRanges.size.source = mTouchSource; 2329 mLocked.orientedRanges.size.min = 0; 2330 mLocked.orientedRanges.size.max = 1.0; 2331 mLocked.orientedRanges.size.flat = 0; 2332 mLocked.orientedRanges.size.fuzz = 0; 2333 } 2334 2335 // Orientation 2336 mLocked.orientationScale = 0; 2337 if (mCalibration.orientationCalibration != Calibration::ORIENTATION_CALIBRATION_NONE) { 2338 if (mCalibration.orientationCalibration 2339 == Calibration::ORIENTATION_CALIBRATION_INTERPOLATED) { 2340 if (mRawAxes.orientation.valid && mRawAxes.orientation.maxValue != 0) { 2341 mLocked.orientationScale = float(M_PI_2) / mRawAxes.orientation.maxValue; 2342 } 2343 } 2344 2345 mLocked.orientedRanges.haveOrientation = true; 2346 2347 mLocked.orientedRanges.orientation.axis = AMOTION_EVENT_AXIS_ORIENTATION; 2348 mLocked.orientedRanges.orientation.source = mTouchSource; 2349 mLocked.orientedRanges.orientation.min = - M_PI_2; 2350 mLocked.orientedRanges.orientation.max = M_PI_2; 2351 mLocked.orientedRanges.orientation.flat = 0; 2352 mLocked.orientedRanges.orientation.fuzz = 0; 2353 } 2354 2355 // Distance 2356 mLocked.distanceScale = 0; 2357 if (mCalibration.distanceCalibration != Calibration::DISTANCE_CALIBRATION_NONE) { 2358 if (mCalibration.distanceCalibration 2359 == Calibration::DISTANCE_CALIBRATION_SCALED) { 2360 if (mCalibration.haveDistanceScale) { 2361 mLocked.distanceScale = mCalibration.distanceScale; 2362 } else { 2363 mLocked.distanceScale = 1.0f; 2364 } 2365 } 2366 2367 mLocked.orientedRanges.haveDistance = true; 2368 2369 mLocked.orientedRanges.distance.axis = AMOTION_EVENT_AXIS_DISTANCE; 2370 mLocked.orientedRanges.distance.source = mTouchSource; 2371 mLocked.orientedRanges.distance.min = 2372 mRawAxes.distance.minValue * mLocked.distanceScale; 2373 mLocked.orientedRanges.distance.max = 2374 mRawAxes.distance.minValue * mLocked.distanceScale; 2375 mLocked.orientedRanges.distance.flat = 0; 2376 mLocked.orientedRanges.distance.fuzz = 2377 mRawAxes.distance.fuzz * mLocked.distanceScale; 2378 } 2379 } 2380 2381 if (orientationChanged || sizeChanged) { 2382 // Compute oriented surface dimensions, precision, scales and ranges. 2383 // Note that the maximum value reported is an inclusive maximum value so it is one 2384 // unit less than the total width or height of surface. 2385 switch (mLocked.surfaceOrientation) { 2386 case DISPLAY_ORIENTATION_90: 2387 case DISPLAY_ORIENTATION_270: 2388 mLocked.orientedSurfaceWidth = mLocked.surfaceHeight; 2389 mLocked.orientedSurfaceHeight = mLocked.surfaceWidth; 2390 2391 mLocked.orientedXPrecision = mLocked.yPrecision; 2392 mLocked.orientedYPrecision = mLocked.xPrecision; 2393 2394 mLocked.orientedRanges.x.min = 0; 2395 mLocked.orientedRanges.x.max = (mRawAxes.y.maxValue - mRawAxes.y.minValue) 2396 * mLocked.yScale; 2397 mLocked.orientedRanges.x.flat = 0; 2398 mLocked.orientedRanges.x.fuzz = mLocked.yScale; 2399 2400 mLocked.orientedRanges.y.min = 0; 2401 mLocked.orientedRanges.y.max = (mRawAxes.x.maxValue - mRawAxes.x.minValue) 2402 * mLocked.xScale; 2403 mLocked.orientedRanges.y.flat = 0; 2404 mLocked.orientedRanges.y.fuzz = mLocked.xScale; 2405 break; 2406 2407 default: 2408 mLocked.orientedSurfaceWidth = mLocked.surfaceWidth; 2409 mLocked.orientedSurfaceHeight = mLocked.surfaceHeight; 2410 2411 mLocked.orientedXPrecision = mLocked.xPrecision; 2412 mLocked.orientedYPrecision = mLocked.yPrecision; 2413 2414 mLocked.orientedRanges.x.min = 0; 2415 mLocked.orientedRanges.x.max = (mRawAxes.x.maxValue - mRawAxes.x.minValue) 2416 * mLocked.xScale; 2417 mLocked.orientedRanges.x.flat = 0; 2418 mLocked.orientedRanges.x.fuzz = mLocked.xScale; 2419 2420 mLocked.orientedRanges.y.min = 0; 2421 mLocked.orientedRanges.y.max = (mRawAxes.y.maxValue - mRawAxes.y.minValue) 2422 * mLocked.yScale; 2423 mLocked.orientedRanges.y.flat = 0; 2424 mLocked.orientedRanges.y.fuzz = mLocked.yScale; 2425 break; 2426 } 2427 2428 // Compute pointer gesture detection parameters. 2429 // TODO: These factors should not be hardcoded. 2430 if (mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER) { 2431 int32_t rawWidth = mRawAxes.x.maxValue - mRawAxes.x.minValue + 1; 2432 int32_t rawHeight = mRawAxes.y.maxValue - mRawAxes.y.minValue + 1; 2433 float rawDiagonal = hypotf(rawWidth, rawHeight); 2434 float displayDiagonal = hypotf(mLocked.associatedDisplayWidth, 2435 mLocked.associatedDisplayHeight); 2436 2437 // Scale movements such that one whole swipe of the touch pad covers a 2438 // given area relative to the diagonal size of the display when no acceleration 2439 // is applied. 2440 // Assume that the touch pad has a square aspect ratio such that movements in 2441 // X and Y of the same number of raw units cover the same physical distance. 2442 mLocked.pointerGestureXMovementScale = mConfig.pointerGestureMovementSpeedRatio 2443 * displayDiagonal / rawDiagonal; 2444 mLocked.pointerGestureYMovementScale = mLocked.pointerGestureXMovementScale; 2445 2446 // Scale zooms to cover a smaller range of the display than movements do. 2447 // This value determines the area around the pointer that is affected by freeform 2448 // pointer gestures. 2449 mLocked.pointerGestureXZoomScale = mConfig.pointerGestureZoomSpeedRatio 2450 * displayDiagonal / rawDiagonal; 2451 mLocked.pointerGestureYZoomScale = mLocked.pointerGestureXZoomScale; 2452 2453 // Max width between pointers to detect a swipe gesture is more than some fraction 2454 // of the diagonal axis of the touch pad. Touches that are wider than this are 2455 // translated into freeform gestures. 2456 mLocked.pointerGestureMaxSwipeWidth = 2457 mConfig.pointerGestureSwipeMaxWidthRatio * rawDiagonal; 2458 2459 // Reset the current pointer gesture. 2460 mPointerGesture.reset(); 2461 2462 // Remove any current spots. 2463 if (mParameters.gestureMode == Parameters::GESTURE_MODE_SPOTS) { 2464 mPointerController->clearSpots(); 2465 } 2466 } 2467 } 2468 2469 return true; 2470} 2471 2472void TouchInputMapper::dumpSurfaceLocked(String8& dump) { 2473 dump.appendFormat(INDENT3 "SurfaceWidth: %dpx\n", mLocked.surfaceWidth); 2474 dump.appendFormat(INDENT3 "SurfaceHeight: %dpx\n", mLocked.surfaceHeight); 2475 dump.appendFormat(INDENT3 "SurfaceOrientation: %d\n", mLocked.surfaceOrientation); 2476} 2477 2478void TouchInputMapper::configureVirtualKeysLocked() { 2479 Vector<VirtualKeyDefinition> virtualKeyDefinitions; 2480 getEventHub()->getVirtualKeyDefinitions(getDeviceId(), virtualKeyDefinitions); 2481 2482 mLocked.virtualKeys.clear(); 2483 2484 if (virtualKeyDefinitions.size() == 0) { 2485 return; 2486 } 2487 2488 mLocked.virtualKeys.setCapacity(virtualKeyDefinitions.size()); 2489 2490 int32_t touchScreenLeft = mRawAxes.x.minValue; 2491 int32_t touchScreenTop = mRawAxes.y.minValue; 2492 int32_t touchScreenWidth = mRawAxes.x.maxValue - mRawAxes.x.minValue + 1; 2493 int32_t touchScreenHeight = mRawAxes.y.maxValue - mRawAxes.y.minValue + 1; 2494 2495 for (size_t i = 0; i < virtualKeyDefinitions.size(); i++) { 2496 const VirtualKeyDefinition& virtualKeyDefinition = 2497 virtualKeyDefinitions[i]; 2498 2499 mLocked.virtualKeys.add(); 2500 VirtualKey& virtualKey = mLocked.virtualKeys.editTop(); 2501 2502 virtualKey.scanCode = virtualKeyDefinition.scanCode; 2503 int32_t keyCode; 2504 uint32_t flags; 2505 if (getEventHub()->mapKey(getDeviceId(), virtualKey.scanCode, 2506 & keyCode, & flags)) { 2507 LOGW(INDENT "VirtualKey %d: could not obtain key code, ignoring", 2508 virtualKey.scanCode); 2509 mLocked.virtualKeys.pop(); // drop the key 2510 continue; 2511 } 2512 2513 virtualKey.keyCode = keyCode; 2514 virtualKey.flags = flags; 2515 2516 // convert the key definition's display coordinates into touch coordinates for a hit box 2517 int32_t halfWidth = virtualKeyDefinition.width / 2; 2518 int32_t halfHeight = virtualKeyDefinition.height / 2; 2519 2520 virtualKey.hitLeft = (virtualKeyDefinition.centerX - halfWidth) 2521 * touchScreenWidth / mLocked.surfaceWidth + touchScreenLeft; 2522 virtualKey.hitRight= (virtualKeyDefinition.centerX + halfWidth) 2523 * touchScreenWidth / mLocked.surfaceWidth + touchScreenLeft; 2524 virtualKey.hitTop = (virtualKeyDefinition.centerY - halfHeight) 2525 * touchScreenHeight / mLocked.surfaceHeight + touchScreenTop; 2526 virtualKey.hitBottom = (virtualKeyDefinition.centerY + halfHeight) 2527 * touchScreenHeight / mLocked.surfaceHeight + touchScreenTop; 2528 } 2529} 2530 2531void TouchInputMapper::dumpVirtualKeysLocked(String8& dump) { 2532 if (!mLocked.virtualKeys.isEmpty()) { 2533 dump.append(INDENT3 "Virtual Keys:\n"); 2534 2535 for (size_t i = 0; i < mLocked.virtualKeys.size(); i++) { 2536 const VirtualKey& virtualKey = mLocked.virtualKeys.itemAt(i); 2537 dump.appendFormat(INDENT4 "%d: scanCode=%d, keyCode=%d, " 2538 "hitLeft=%d, hitRight=%d, hitTop=%d, hitBottom=%d\n", 2539 i, virtualKey.scanCode, virtualKey.keyCode, 2540 virtualKey.hitLeft, virtualKey.hitRight, 2541 virtualKey.hitTop, virtualKey.hitBottom); 2542 } 2543 } 2544} 2545 2546void TouchInputMapper::parseCalibration() { 2547 const PropertyMap& in = getDevice()->getConfiguration(); 2548 Calibration& out = mCalibration; 2549 2550 // Touch Size 2551 out.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_DEFAULT; 2552 String8 touchSizeCalibrationString; 2553 if (in.tryGetProperty(String8("touch.touchSize.calibration"), touchSizeCalibrationString)) { 2554 if (touchSizeCalibrationString == "none") { 2555 out.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_NONE; 2556 } else if (touchSizeCalibrationString == "geometric") { 2557 out.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_GEOMETRIC; 2558 } else if (touchSizeCalibrationString == "pressure") { 2559 out.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_PRESSURE; 2560 } else if (touchSizeCalibrationString != "default") { 2561 LOGW("Invalid value for touch.touchSize.calibration: '%s'", 2562 touchSizeCalibrationString.string()); 2563 } 2564 } 2565 2566 // Tool Size 2567 out.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_DEFAULT; 2568 String8 toolSizeCalibrationString; 2569 if (in.tryGetProperty(String8("touch.toolSize.calibration"), toolSizeCalibrationString)) { 2570 if (toolSizeCalibrationString == "none") { 2571 out.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_NONE; 2572 } else if (toolSizeCalibrationString == "geometric") { 2573 out.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_GEOMETRIC; 2574 } else if (toolSizeCalibrationString == "linear") { 2575 out.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_LINEAR; 2576 } else if (toolSizeCalibrationString == "area") { 2577 out.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_AREA; 2578 } else if (toolSizeCalibrationString != "default") { 2579 LOGW("Invalid value for touch.toolSize.calibration: '%s'", 2580 toolSizeCalibrationString.string()); 2581 } 2582 } 2583 2584 out.haveToolSizeLinearScale = in.tryGetProperty(String8("touch.toolSize.linearScale"), 2585 out.toolSizeLinearScale); 2586 out.haveToolSizeLinearBias = in.tryGetProperty(String8("touch.toolSize.linearBias"), 2587 out.toolSizeLinearBias); 2588 out.haveToolSizeAreaScale = in.tryGetProperty(String8("touch.toolSize.areaScale"), 2589 out.toolSizeAreaScale); 2590 out.haveToolSizeAreaBias = in.tryGetProperty(String8("touch.toolSize.areaBias"), 2591 out.toolSizeAreaBias); 2592 out.haveToolSizeIsSummed = in.tryGetProperty(String8("touch.toolSize.isSummed"), 2593 out.toolSizeIsSummed); 2594 2595 // Pressure 2596 out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_DEFAULT; 2597 String8 pressureCalibrationString; 2598 if (in.tryGetProperty(String8("touch.pressure.calibration"), pressureCalibrationString)) { 2599 if (pressureCalibrationString == "none") { 2600 out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_NONE; 2601 } else if (pressureCalibrationString == "physical") { 2602 out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_PHYSICAL; 2603 } else if (pressureCalibrationString == "amplitude") { 2604 out.pressureCalibration = Calibration::PRESSURE_CALIBRATION_AMPLITUDE; 2605 } else if (pressureCalibrationString != "default") { 2606 LOGW("Invalid value for touch.pressure.calibration: '%s'", 2607 pressureCalibrationString.string()); 2608 } 2609 } 2610 2611 out.pressureSource = Calibration::PRESSURE_SOURCE_DEFAULT; 2612 String8 pressureSourceString; 2613 if (in.tryGetProperty(String8("touch.pressure.source"), pressureSourceString)) { 2614 if (pressureSourceString == "pressure") { 2615 out.pressureSource = Calibration::PRESSURE_SOURCE_PRESSURE; 2616 } else if (pressureSourceString == "touch") { 2617 out.pressureSource = Calibration::PRESSURE_SOURCE_TOUCH; 2618 } else if (pressureSourceString != "default") { 2619 LOGW("Invalid value for touch.pressure.source: '%s'", 2620 pressureSourceString.string()); 2621 } 2622 } 2623 2624 out.havePressureScale = in.tryGetProperty(String8("touch.pressure.scale"), 2625 out.pressureScale); 2626 2627 // Size 2628 out.sizeCalibration = Calibration::SIZE_CALIBRATION_DEFAULT; 2629 String8 sizeCalibrationString; 2630 if (in.tryGetProperty(String8("touch.size.calibration"), sizeCalibrationString)) { 2631 if (sizeCalibrationString == "none") { 2632 out.sizeCalibration = Calibration::SIZE_CALIBRATION_NONE; 2633 } else if (sizeCalibrationString == "normalized") { 2634 out.sizeCalibration = Calibration::SIZE_CALIBRATION_NORMALIZED; 2635 } else if (sizeCalibrationString != "default") { 2636 LOGW("Invalid value for touch.size.calibration: '%s'", 2637 sizeCalibrationString.string()); 2638 } 2639 } 2640 2641 // Orientation 2642 out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_DEFAULT; 2643 String8 orientationCalibrationString; 2644 if (in.tryGetProperty(String8("touch.orientation.calibration"), orientationCalibrationString)) { 2645 if (orientationCalibrationString == "none") { 2646 out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_NONE; 2647 } else if (orientationCalibrationString == "interpolated") { 2648 out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_INTERPOLATED; 2649 } else if (orientationCalibrationString == "vector") { 2650 out.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_VECTOR; 2651 } else if (orientationCalibrationString != "default") { 2652 LOGW("Invalid value for touch.orientation.calibration: '%s'", 2653 orientationCalibrationString.string()); 2654 } 2655 } 2656 2657 // Distance 2658 out.distanceCalibration = Calibration::DISTANCE_CALIBRATION_DEFAULT; 2659 String8 distanceCalibrationString; 2660 if (in.tryGetProperty(String8("touch.distance.calibration"), distanceCalibrationString)) { 2661 if (distanceCalibrationString == "none") { 2662 out.distanceCalibration = Calibration::DISTANCE_CALIBRATION_NONE; 2663 } else if (distanceCalibrationString == "scaled") { 2664 out.distanceCalibration = Calibration::DISTANCE_CALIBRATION_SCALED; 2665 } else if (distanceCalibrationString != "default") { 2666 LOGW("Invalid value for touch.distance.calibration: '%s'", 2667 distanceCalibrationString.string()); 2668 } 2669 } 2670 2671 out.haveDistanceScale = in.tryGetProperty(String8("touch.distance.scale"), 2672 out.distanceScale); 2673} 2674 2675void TouchInputMapper::resolveCalibration() { 2676 // Pressure 2677 switch (mCalibration.pressureSource) { 2678 case Calibration::PRESSURE_SOURCE_DEFAULT: 2679 if (mRawAxes.pressure.valid) { 2680 mCalibration.pressureSource = Calibration::PRESSURE_SOURCE_PRESSURE; 2681 } else if (mRawAxes.touchMajor.valid) { 2682 mCalibration.pressureSource = Calibration::PRESSURE_SOURCE_TOUCH; 2683 } 2684 break; 2685 2686 case Calibration::PRESSURE_SOURCE_PRESSURE: 2687 if (! mRawAxes.pressure.valid) { 2688 LOGW("Calibration property touch.pressure.source is 'pressure' but " 2689 "the pressure axis is not available."); 2690 } 2691 break; 2692 2693 case Calibration::PRESSURE_SOURCE_TOUCH: 2694 if (! mRawAxes.touchMajor.valid) { 2695 LOGW("Calibration property touch.pressure.source is 'touch' but " 2696 "the touchMajor axis is not available."); 2697 } 2698 break; 2699 2700 default: 2701 break; 2702 } 2703 2704 switch (mCalibration.pressureCalibration) { 2705 case Calibration::PRESSURE_CALIBRATION_DEFAULT: 2706 if (mCalibration.pressureSource != Calibration::PRESSURE_SOURCE_DEFAULT) { 2707 mCalibration.pressureCalibration = Calibration::PRESSURE_CALIBRATION_AMPLITUDE; 2708 } else { 2709 mCalibration.pressureCalibration = Calibration::PRESSURE_CALIBRATION_NONE; 2710 } 2711 break; 2712 2713 default: 2714 break; 2715 } 2716 2717 // Tool Size 2718 switch (mCalibration.toolSizeCalibration) { 2719 case Calibration::TOOL_SIZE_CALIBRATION_DEFAULT: 2720 if (mRawAxes.toolMajor.valid) { 2721 mCalibration.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_LINEAR; 2722 } else { 2723 mCalibration.toolSizeCalibration = Calibration::TOOL_SIZE_CALIBRATION_NONE; 2724 } 2725 break; 2726 2727 default: 2728 break; 2729 } 2730 2731 // Touch Size 2732 switch (mCalibration.touchSizeCalibration) { 2733 case Calibration::TOUCH_SIZE_CALIBRATION_DEFAULT: 2734 if (mCalibration.pressureCalibration != Calibration::PRESSURE_CALIBRATION_NONE 2735 && mCalibration.toolSizeCalibration != Calibration::TOOL_SIZE_CALIBRATION_NONE) { 2736 mCalibration.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_PRESSURE; 2737 } else { 2738 mCalibration.touchSizeCalibration = Calibration::TOUCH_SIZE_CALIBRATION_NONE; 2739 } 2740 break; 2741 2742 default: 2743 break; 2744 } 2745 2746 // Size 2747 switch (mCalibration.sizeCalibration) { 2748 case Calibration::SIZE_CALIBRATION_DEFAULT: 2749 if (mRawAxes.toolMajor.valid) { 2750 mCalibration.sizeCalibration = Calibration::SIZE_CALIBRATION_NORMALIZED; 2751 } else { 2752 mCalibration.sizeCalibration = Calibration::SIZE_CALIBRATION_NONE; 2753 } 2754 break; 2755 2756 default: 2757 break; 2758 } 2759 2760 // Orientation 2761 switch (mCalibration.orientationCalibration) { 2762 case Calibration::ORIENTATION_CALIBRATION_DEFAULT: 2763 if (mRawAxes.orientation.valid) { 2764 mCalibration.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_INTERPOLATED; 2765 } else { 2766 mCalibration.orientationCalibration = Calibration::ORIENTATION_CALIBRATION_NONE; 2767 } 2768 break; 2769 2770 default: 2771 break; 2772 } 2773 2774 // Distance 2775 switch (mCalibration.distanceCalibration) { 2776 case Calibration::DISTANCE_CALIBRATION_DEFAULT: 2777 if (mRawAxes.distance.valid) { 2778 mCalibration.distanceCalibration = Calibration::DISTANCE_CALIBRATION_SCALED; 2779 } else { 2780 mCalibration.distanceCalibration = Calibration::DISTANCE_CALIBRATION_NONE; 2781 } 2782 break; 2783 2784 default: 2785 break; 2786 } 2787} 2788 2789void TouchInputMapper::dumpCalibration(String8& dump) { 2790 dump.append(INDENT3 "Calibration:\n"); 2791 2792 // Touch Size 2793 switch (mCalibration.touchSizeCalibration) { 2794 case Calibration::TOUCH_SIZE_CALIBRATION_NONE: 2795 dump.append(INDENT4 "touch.touchSize.calibration: none\n"); 2796 break; 2797 case Calibration::TOUCH_SIZE_CALIBRATION_GEOMETRIC: 2798 dump.append(INDENT4 "touch.touchSize.calibration: geometric\n"); 2799 break; 2800 case Calibration::TOUCH_SIZE_CALIBRATION_PRESSURE: 2801 dump.append(INDENT4 "touch.touchSize.calibration: pressure\n"); 2802 break; 2803 default: 2804 LOG_ASSERT(false); 2805 } 2806 2807 // Tool Size 2808 switch (mCalibration.toolSizeCalibration) { 2809 case Calibration::TOOL_SIZE_CALIBRATION_NONE: 2810 dump.append(INDENT4 "touch.toolSize.calibration: none\n"); 2811 break; 2812 case Calibration::TOOL_SIZE_CALIBRATION_GEOMETRIC: 2813 dump.append(INDENT4 "touch.toolSize.calibration: geometric\n"); 2814 break; 2815 case Calibration::TOOL_SIZE_CALIBRATION_LINEAR: 2816 dump.append(INDENT4 "touch.toolSize.calibration: linear\n"); 2817 break; 2818 case Calibration::TOOL_SIZE_CALIBRATION_AREA: 2819 dump.append(INDENT4 "touch.toolSize.calibration: area\n"); 2820 break; 2821 default: 2822 LOG_ASSERT(false); 2823 } 2824 2825 if (mCalibration.haveToolSizeLinearScale) { 2826 dump.appendFormat(INDENT4 "touch.toolSize.linearScale: %0.3f\n", 2827 mCalibration.toolSizeLinearScale); 2828 } 2829 2830 if (mCalibration.haveToolSizeLinearBias) { 2831 dump.appendFormat(INDENT4 "touch.toolSize.linearBias: %0.3f\n", 2832 mCalibration.toolSizeLinearBias); 2833 } 2834 2835 if (mCalibration.haveToolSizeAreaScale) { 2836 dump.appendFormat(INDENT4 "touch.toolSize.areaScale: %0.3f\n", 2837 mCalibration.toolSizeAreaScale); 2838 } 2839 2840 if (mCalibration.haveToolSizeAreaBias) { 2841 dump.appendFormat(INDENT4 "touch.toolSize.areaBias: %0.3f\n", 2842 mCalibration.toolSizeAreaBias); 2843 } 2844 2845 if (mCalibration.haveToolSizeIsSummed) { 2846 dump.appendFormat(INDENT4 "touch.toolSize.isSummed: %s\n", 2847 toString(mCalibration.toolSizeIsSummed)); 2848 } 2849 2850 // Pressure 2851 switch (mCalibration.pressureCalibration) { 2852 case Calibration::PRESSURE_CALIBRATION_NONE: 2853 dump.append(INDENT4 "touch.pressure.calibration: none\n"); 2854 break; 2855 case Calibration::PRESSURE_CALIBRATION_PHYSICAL: 2856 dump.append(INDENT4 "touch.pressure.calibration: physical\n"); 2857 break; 2858 case Calibration::PRESSURE_CALIBRATION_AMPLITUDE: 2859 dump.append(INDENT4 "touch.pressure.calibration: amplitude\n"); 2860 break; 2861 default: 2862 LOG_ASSERT(false); 2863 } 2864 2865 switch (mCalibration.pressureSource) { 2866 case Calibration::PRESSURE_SOURCE_PRESSURE: 2867 dump.append(INDENT4 "touch.pressure.source: pressure\n"); 2868 break; 2869 case Calibration::PRESSURE_SOURCE_TOUCH: 2870 dump.append(INDENT4 "touch.pressure.source: touch\n"); 2871 break; 2872 case Calibration::PRESSURE_SOURCE_DEFAULT: 2873 break; 2874 default: 2875 LOG_ASSERT(false); 2876 } 2877 2878 if (mCalibration.havePressureScale) { 2879 dump.appendFormat(INDENT4 "touch.pressure.scale: %0.3f\n", 2880 mCalibration.pressureScale); 2881 } 2882 2883 // Size 2884 switch (mCalibration.sizeCalibration) { 2885 case Calibration::SIZE_CALIBRATION_NONE: 2886 dump.append(INDENT4 "touch.size.calibration: none\n"); 2887 break; 2888 case Calibration::SIZE_CALIBRATION_NORMALIZED: 2889 dump.append(INDENT4 "touch.size.calibration: normalized\n"); 2890 break; 2891 default: 2892 LOG_ASSERT(false); 2893 } 2894 2895 // Orientation 2896 switch (mCalibration.orientationCalibration) { 2897 case Calibration::ORIENTATION_CALIBRATION_NONE: 2898 dump.append(INDENT4 "touch.orientation.calibration: none\n"); 2899 break; 2900 case Calibration::ORIENTATION_CALIBRATION_INTERPOLATED: 2901 dump.append(INDENT4 "touch.orientation.calibration: interpolated\n"); 2902 break; 2903 case Calibration::ORIENTATION_CALIBRATION_VECTOR: 2904 dump.append(INDENT4 "touch.orientation.calibration: vector\n"); 2905 break; 2906 default: 2907 LOG_ASSERT(false); 2908 } 2909 2910 // Distance 2911 switch (mCalibration.distanceCalibration) { 2912 case Calibration::DISTANCE_CALIBRATION_NONE: 2913 dump.append(INDENT4 "touch.distance.calibration: none\n"); 2914 break; 2915 case Calibration::DISTANCE_CALIBRATION_SCALED: 2916 dump.append(INDENT4 "touch.distance.calibration: scaled\n"); 2917 break; 2918 default: 2919 LOG_ASSERT(false); 2920 } 2921 2922 if (mCalibration.haveDistanceScale) { 2923 dump.appendFormat(INDENT4 "touch.distance.scale: %0.3f\n", 2924 mCalibration.distanceScale); 2925 } 2926} 2927 2928void TouchInputMapper::reset() { 2929 // Synthesize touch up event if touch is currently down. 2930 // This will also take care of finishing virtual key processing if needed. 2931 if (mLastTouch.pointerCount != 0) { 2932 nsecs_t when = systemTime(SYSTEM_TIME_MONOTONIC); 2933 mCurrentTouch.clear(); 2934 syncTouch(when, true); 2935 } 2936 2937 { // acquire lock 2938 AutoMutex _l(mLock); 2939 initializeLocked(); 2940 2941 if (mPointerController != NULL 2942 && mParameters.gestureMode == Parameters::GESTURE_MODE_SPOTS) { 2943 mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL); 2944 mPointerController->clearSpots(); 2945 } 2946 } // release lock 2947 2948 InputMapper::reset(); 2949} 2950 2951void TouchInputMapper::syncTouch(nsecs_t when, bool havePointerIds) { 2952#if DEBUG_RAW_EVENTS 2953 if (!havePointerIds) { 2954 LOGD("syncTouch: pointerCount=%d, no pointer ids", mCurrentTouch.pointerCount); 2955 } else { 2956 LOGD("syncTouch: pointerCount=%d, up=0x%08x, down=0x%08x, move=0x%08x, " 2957 "last=0x%08x, current=0x%08x", mCurrentTouch.pointerCount, 2958 mLastTouch.idBits.value & ~mCurrentTouch.idBits.value, 2959 mCurrentTouch.idBits.value & ~mLastTouch.idBits.value, 2960 mLastTouch.idBits.value & mCurrentTouch.idBits.value, 2961 mLastTouch.idBits.value, mCurrentTouch.idBits.value); 2962 } 2963#endif 2964 2965 // Preprocess pointer data. 2966 if (!havePointerIds) { 2967 calculatePointerIds(); 2968 } 2969 2970 uint32_t policyFlags = 0; 2971 if (mLastTouch.pointerCount == 0 && mCurrentTouch.pointerCount != 0) { 2972 if (mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN) { 2973 // If this is a touch screen, hide the pointer on an initial down. 2974 getContext()->fadePointer(); 2975 } 2976 2977 // Initial downs on external touch devices should wake the device. 2978 // We don't do this for internal touch screens to prevent them from waking 2979 // up in your pocket. 2980 // TODO: Use the input device configuration to control this behavior more finely. 2981 if (getDevice()->isExternal()) { 2982 policyFlags |= POLICY_FLAG_WAKE_DROPPED; 2983 } 2984 } 2985 2986 // Synthesize key down from buttons if needed. 2987 synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_DOWN, when, getDeviceId(), mTouchSource, 2988 policyFlags, mLastTouch.buttonState, mCurrentTouch.buttonState); 2989 2990 // Send motion events. 2991 TouchResult touchResult; 2992 if (mLastTouch.pointerCount == 0 && mCurrentTouch.pointerCount == 0 2993 && mLastTouch.buttonState == mCurrentTouch.buttonState) { 2994 // Drop spurious syncs. 2995 touchResult = DROP_STROKE; 2996 } else { 2997 // Process touches and virtual keys. 2998 touchResult = consumeOffScreenTouches(when, policyFlags); 2999 if (touchResult == DISPATCH_TOUCH) { 3000 suppressSwipeOntoVirtualKeys(when); 3001 if (mPointerController != NULL && mConfig.pointerGesturesEnabled) { 3002 dispatchPointerGestures(when, policyFlags, false /*isTimeout*/); 3003 } 3004 dispatchTouches(when, policyFlags); 3005 } 3006 } 3007 3008 // Synthesize key up from buttons if needed. 3009 synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_UP, when, getDeviceId(), mTouchSource, 3010 policyFlags, mLastTouch.buttonState, mCurrentTouch.buttonState); 3011 3012 // Copy current touch to last touch in preparation for the next cycle. 3013 // Keep the button state so we can track edge-triggered button state changes. 3014 if (touchResult == DROP_STROKE) { 3015 mLastTouch.clear(); 3016 mLastTouch.buttonState = mCurrentTouch.buttonState; 3017 } else { 3018 mLastTouch.copyFrom(mCurrentTouch); 3019 } 3020} 3021 3022void TouchInputMapper::timeoutExpired(nsecs_t when) { 3023 if (mPointerController != NULL) { 3024 dispatchPointerGestures(when, 0 /*policyFlags*/, true /*isTimeout*/); 3025 } 3026} 3027 3028TouchInputMapper::TouchResult TouchInputMapper::consumeOffScreenTouches( 3029 nsecs_t when, uint32_t policyFlags) { 3030 int32_t keyEventAction, keyEventFlags; 3031 int32_t keyCode, scanCode, downTime; 3032 TouchResult touchResult; 3033 3034 { // acquire lock 3035 AutoMutex _l(mLock); 3036 3037 // Update surface size and orientation, including virtual key positions. 3038 if (! configureSurfaceLocked()) { 3039 return DROP_STROKE; 3040 } 3041 3042 // Check for virtual key press. 3043 if (mLocked.currentVirtualKey.down) { 3044 if (mCurrentTouch.pointerCount == 0) { 3045 // Pointer went up while virtual key was down. 3046 mLocked.currentVirtualKey.down = false; 3047#if DEBUG_VIRTUAL_KEYS 3048 LOGD("VirtualKeys: Generating key up: keyCode=%d, scanCode=%d", 3049 mLocked.currentVirtualKey.keyCode, mLocked.currentVirtualKey.scanCode); 3050#endif 3051 keyEventAction = AKEY_EVENT_ACTION_UP; 3052 keyEventFlags = AKEY_EVENT_FLAG_FROM_SYSTEM | AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 3053 touchResult = SKIP_TOUCH; 3054 goto DispatchVirtualKey; 3055 } 3056 3057 if (mCurrentTouch.pointerCount == 1) { 3058 int32_t x = mCurrentTouch.pointers[0].x; 3059 int32_t y = mCurrentTouch.pointers[0].y; 3060 const VirtualKey* virtualKey = findVirtualKeyHitLocked(x, y); 3061 if (virtualKey && virtualKey->keyCode == mLocked.currentVirtualKey.keyCode) { 3062 // Pointer is still within the space of the virtual key. 3063 return SKIP_TOUCH; 3064 } 3065 } 3066 3067 // Pointer left virtual key area or another pointer also went down. 3068 // Send key cancellation and drop the stroke so subsequent motions will be 3069 // considered fresh downs. This is useful when the user swipes away from the 3070 // virtual key area into the main display surface. 3071 mLocked.currentVirtualKey.down = false; 3072#if DEBUG_VIRTUAL_KEYS 3073 LOGD("VirtualKeys: Canceling key: keyCode=%d, scanCode=%d", 3074 mLocked.currentVirtualKey.keyCode, mLocked.currentVirtualKey.scanCode); 3075#endif 3076 keyEventAction = AKEY_EVENT_ACTION_UP; 3077 keyEventFlags = AKEY_EVENT_FLAG_FROM_SYSTEM | AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY 3078 | AKEY_EVENT_FLAG_CANCELED; 3079 3080 // Check whether the pointer moved inside the display area where we should 3081 // start a new stroke. 3082 int32_t x = mCurrentTouch.pointers[0].x; 3083 int32_t y = mCurrentTouch.pointers[0].y; 3084 if (isPointInsideSurfaceLocked(x, y)) { 3085 mLastTouch.clear(); 3086 touchResult = DISPATCH_TOUCH; 3087 } else { 3088 touchResult = DROP_STROKE; 3089 } 3090 } else { 3091 if (mCurrentTouch.pointerCount >= 1 && mLastTouch.pointerCount == 0) { 3092 // Pointer just went down. Handle off-screen touches, if needed. 3093 int32_t x = mCurrentTouch.pointers[0].x; 3094 int32_t y = mCurrentTouch.pointers[0].y; 3095 if (! isPointInsideSurfaceLocked(x, y)) { 3096 // If exactly one pointer went down, check for virtual key hit. 3097 // Otherwise we will drop the entire stroke. 3098 if (mCurrentTouch.pointerCount == 1) { 3099 const VirtualKey* virtualKey = findVirtualKeyHitLocked(x, y); 3100 if (virtualKey) { 3101 if (mContext->shouldDropVirtualKey(when, getDevice(), 3102 virtualKey->keyCode, virtualKey->scanCode)) { 3103 return DROP_STROKE; 3104 } 3105 3106 mLocked.currentVirtualKey.down = true; 3107 mLocked.currentVirtualKey.downTime = when; 3108 mLocked.currentVirtualKey.keyCode = virtualKey->keyCode; 3109 mLocked.currentVirtualKey.scanCode = virtualKey->scanCode; 3110#if DEBUG_VIRTUAL_KEYS 3111 LOGD("VirtualKeys: Generating key down: keyCode=%d, scanCode=%d", 3112 mLocked.currentVirtualKey.keyCode, 3113 mLocked.currentVirtualKey.scanCode); 3114#endif 3115 keyEventAction = AKEY_EVENT_ACTION_DOWN; 3116 keyEventFlags = AKEY_EVENT_FLAG_FROM_SYSTEM 3117 | AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 3118 touchResult = SKIP_TOUCH; 3119 goto DispatchVirtualKey; 3120 } 3121 } 3122 return DROP_STROKE; 3123 } 3124 } 3125 return DISPATCH_TOUCH; 3126 } 3127 3128 DispatchVirtualKey: 3129 // Collect remaining state needed to dispatch virtual key. 3130 keyCode = mLocked.currentVirtualKey.keyCode; 3131 scanCode = mLocked.currentVirtualKey.scanCode; 3132 downTime = mLocked.currentVirtualKey.downTime; 3133 } // release lock 3134 3135 // Dispatch virtual key. 3136 int32_t metaState = mContext->getGlobalMetaState(); 3137 policyFlags |= POLICY_FLAG_VIRTUAL; 3138 getDispatcher()->notifyKey(when, getDeviceId(), AINPUT_SOURCE_KEYBOARD, policyFlags, 3139 keyEventAction, keyEventFlags, keyCode, scanCode, metaState, downTime); 3140 return touchResult; 3141} 3142 3143void TouchInputMapper::suppressSwipeOntoVirtualKeys(nsecs_t when) { 3144 // Disable all virtual key touches that happen within a short time interval of the 3145 // most recent touch. The idea is to filter out stray virtual key presses when 3146 // interacting with the touch screen. 3147 // 3148 // Problems we're trying to solve: 3149 // 3150 // 1. While scrolling a list or dragging the window shade, the user swipes down into a 3151 // virtual key area that is implemented by a separate touch panel and accidentally 3152 // triggers a virtual key. 3153 // 3154 // 2. While typing in the on screen keyboard, the user taps slightly outside the screen 3155 // area and accidentally triggers a virtual key. This often happens when virtual keys 3156 // are layed out below the screen near to where the on screen keyboard's space bar 3157 // is displayed. 3158 if (mConfig.virtualKeyQuietTime > 0 && mCurrentTouch.pointerCount != 0) { 3159 mContext->disableVirtualKeysUntil(when + mConfig.virtualKeyQuietTime); 3160 } 3161} 3162 3163void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) { 3164 uint32_t currentPointerCount = mCurrentTouch.pointerCount; 3165 uint32_t lastPointerCount = mLastTouch.pointerCount; 3166 if (currentPointerCount == 0 && lastPointerCount == 0) { 3167 return; // nothing to do! 3168 } 3169 3170 // Update current touch coordinates. 3171 int32_t edgeFlags; 3172 float xPrecision, yPrecision; 3173 prepareTouches(&edgeFlags, &xPrecision, &yPrecision); 3174 3175 // Dispatch motions. 3176 BitSet32 currentIdBits = mCurrentTouch.idBits; 3177 BitSet32 lastIdBits = mLastTouch.idBits; 3178 int32_t metaState = getContext()->getGlobalMetaState(); 3179 int32_t buttonState = mCurrentTouch.buttonState; 3180 3181 if (currentIdBits == lastIdBits) { 3182 // No pointer id changes so this is a move event. 3183 // The dispatcher takes care of batching moves so we don't have to deal with that here. 3184 dispatchMotion(when, policyFlags, mTouchSource, 3185 AMOTION_EVENT_ACTION_MOVE, 0, metaState, buttonState, 3186 AMOTION_EVENT_EDGE_FLAG_NONE, 3187 mCurrentTouchProperties, mCurrentTouchCoords, 3188 mCurrentTouch.idToIndex, currentIdBits, -1, 3189 xPrecision, yPrecision, mDownTime); 3190 } else { 3191 // There may be pointers going up and pointers going down and pointers moving 3192 // all at the same time. 3193 BitSet32 upIdBits(lastIdBits.value & ~currentIdBits.value); 3194 BitSet32 downIdBits(currentIdBits.value & ~lastIdBits.value); 3195 BitSet32 moveIdBits(lastIdBits.value & currentIdBits.value); 3196 BitSet32 dispatchedIdBits(lastIdBits.value); 3197 3198 // Update last coordinates of pointers that have moved so that we observe the new 3199 // pointer positions at the same time as other pointers that have just gone up. 3200 bool moveNeeded = updateMovedPointers( 3201 mCurrentTouchProperties, mCurrentTouchCoords, mCurrentTouch.idToIndex, 3202 mLastTouchProperties, mLastTouchCoords, mLastTouch.idToIndex, 3203 moveIdBits); 3204 if (buttonState != mLastTouch.buttonState) { 3205 moveNeeded = true; 3206 } 3207 3208 // Dispatch pointer up events. 3209 while (!upIdBits.isEmpty()) { 3210 uint32_t upId = upIdBits.firstMarkedBit(); 3211 upIdBits.clearBit(upId); 3212 3213 dispatchMotion(when, policyFlags, mTouchSource, 3214 AMOTION_EVENT_ACTION_POINTER_UP, 0, metaState, buttonState, 0, 3215 mLastTouchProperties, mLastTouchCoords, 3216 mLastTouch.idToIndex, dispatchedIdBits, upId, 3217 xPrecision, yPrecision, mDownTime); 3218 dispatchedIdBits.clearBit(upId); 3219 } 3220 3221 // Dispatch move events if any of the remaining pointers moved from their old locations. 3222 // Although applications receive new locations as part of individual pointer up 3223 // events, they do not generally handle them except when presented in a move event. 3224 if (moveNeeded) { 3225 LOG_ASSERT(moveIdBits.value == dispatchedIdBits.value); 3226 dispatchMotion(when, policyFlags, mTouchSource, 3227 AMOTION_EVENT_ACTION_MOVE, 0, metaState, buttonState, 0, 3228 mCurrentTouchProperties, mCurrentTouchCoords, 3229 mCurrentTouch.idToIndex, dispatchedIdBits, -1, 3230 xPrecision, yPrecision, mDownTime); 3231 } 3232 3233 // Dispatch pointer down events using the new pointer locations. 3234 while (!downIdBits.isEmpty()) { 3235 uint32_t downId = downIdBits.firstMarkedBit(); 3236 downIdBits.clearBit(downId); 3237 dispatchedIdBits.markBit(downId); 3238 3239 if (dispatchedIdBits.count() == 1) { 3240 // First pointer is going down. Set down time. 3241 mDownTime = when; 3242 } else { 3243 // Only send edge flags with first pointer down. 3244 edgeFlags = AMOTION_EVENT_EDGE_FLAG_NONE; 3245 } 3246 3247 dispatchMotion(when, policyFlags, mTouchSource, 3248 AMOTION_EVENT_ACTION_POINTER_DOWN, 0, metaState, buttonState, edgeFlags, 3249 mCurrentTouchProperties, mCurrentTouchCoords, 3250 mCurrentTouch.idToIndex, dispatchedIdBits, downId, 3251 xPrecision, yPrecision, mDownTime); 3252 } 3253 } 3254 3255 // Update state for next time. 3256 for (uint32_t i = 0; i < currentPointerCount; i++) { 3257 mLastTouchProperties[i].copyFrom(mCurrentTouchProperties[i]); 3258 mLastTouchCoords[i].copyFrom(mCurrentTouchCoords[i]); 3259 } 3260} 3261 3262void TouchInputMapper::prepareTouches(int32_t* outEdgeFlags, 3263 float* outXPrecision, float* outYPrecision) { 3264 uint32_t currentPointerCount = mCurrentTouch.pointerCount; 3265 uint32_t lastPointerCount = mLastTouch.pointerCount; 3266 3267 AutoMutex _l(mLock); 3268 3269 // Walk through the the active pointers and map touch screen coordinates (TouchData) into 3270 // display or surface coordinates (PointerCoords) and adjust for display orientation. 3271 for (uint32_t i = 0; i < currentPointerCount; i++) { 3272 const PointerData& in = mCurrentTouch.pointers[i]; 3273 3274 // ToolMajor and ToolMinor 3275 float toolMajor, toolMinor; 3276 switch (mCalibration.toolSizeCalibration) { 3277 case Calibration::TOOL_SIZE_CALIBRATION_GEOMETRIC: 3278 toolMajor = in.toolMajor * mLocked.geometricScale; 3279 if (mRawAxes.toolMinor.valid) { 3280 toolMinor = in.toolMinor * mLocked.geometricScale; 3281 } else { 3282 toolMinor = toolMajor; 3283 } 3284 break; 3285 case Calibration::TOOL_SIZE_CALIBRATION_LINEAR: 3286 toolMajor = in.toolMajor != 0 3287 ? in.toolMajor * mLocked.toolSizeLinearScale + mLocked.toolSizeLinearBias 3288 : 0; 3289 if (mRawAxes.toolMinor.valid) { 3290 toolMinor = in.toolMinor != 0 3291 ? in.toolMinor * mLocked.toolSizeLinearScale 3292 + mLocked.toolSizeLinearBias 3293 : 0; 3294 } else { 3295 toolMinor = toolMajor; 3296 } 3297 break; 3298 case Calibration::TOOL_SIZE_CALIBRATION_AREA: 3299 if (in.toolMajor != 0) { 3300 float diameter = sqrtf(in.toolMajor 3301 * mLocked.toolSizeAreaScale + mLocked.toolSizeAreaBias); 3302 toolMajor = diameter * mLocked.toolSizeLinearScale + mLocked.toolSizeLinearBias; 3303 } else { 3304 toolMajor = 0; 3305 } 3306 toolMinor = toolMajor; 3307 break; 3308 default: 3309 toolMajor = 0; 3310 toolMinor = 0; 3311 break; 3312 } 3313 3314 if (mCalibration.haveToolSizeIsSummed && mCalibration.toolSizeIsSummed) { 3315 toolMajor /= currentPointerCount; 3316 toolMinor /= currentPointerCount; 3317 } 3318 3319 // Pressure 3320 float rawPressure; 3321 switch (mCalibration.pressureSource) { 3322 case Calibration::PRESSURE_SOURCE_PRESSURE: 3323 rawPressure = in.pressure; 3324 break; 3325 case Calibration::PRESSURE_SOURCE_TOUCH: 3326 rawPressure = in.touchMajor; 3327 break; 3328 default: 3329 rawPressure = 0; 3330 } 3331 3332 float pressure; 3333 switch (mCalibration.pressureCalibration) { 3334 case Calibration::PRESSURE_CALIBRATION_PHYSICAL: 3335 case Calibration::PRESSURE_CALIBRATION_AMPLITUDE: 3336 pressure = rawPressure * mLocked.pressureScale; 3337 break; 3338 default: 3339 pressure = 1; 3340 break; 3341 } 3342 3343 // TouchMajor and TouchMinor 3344 float touchMajor, touchMinor; 3345 switch (mCalibration.touchSizeCalibration) { 3346 case Calibration::TOUCH_SIZE_CALIBRATION_GEOMETRIC: 3347 touchMajor = in.touchMajor * mLocked.geometricScale; 3348 if (mRawAxes.touchMinor.valid) { 3349 touchMinor = in.touchMinor * mLocked.geometricScale; 3350 } else { 3351 touchMinor = touchMajor; 3352 } 3353 break; 3354 case Calibration::TOUCH_SIZE_CALIBRATION_PRESSURE: 3355 touchMajor = toolMajor * pressure; 3356 touchMinor = toolMinor * pressure; 3357 break; 3358 default: 3359 touchMajor = 0; 3360 touchMinor = 0; 3361 break; 3362 } 3363 3364 if (touchMajor > toolMajor) { 3365 touchMajor = toolMajor; 3366 } 3367 if (touchMinor > toolMinor) { 3368 touchMinor = toolMinor; 3369 } 3370 3371 // Size 3372 float size; 3373 switch (mCalibration.sizeCalibration) { 3374 case Calibration::SIZE_CALIBRATION_NORMALIZED: { 3375 float rawSize = mRawAxes.toolMinor.valid 3376 ? avg(in.toolMajor, in.toolMinor) 3377 : in.toolMajor; 3378 size = rawSize * mLocked.sizeScale; 3379 break; 3380 } 3381 default: 3382 size = 0; 3383 break; 3384 } 3385 3386 // Orientation 3387 float orientation; 3388 switch (mCalibration.orientationCalibration) { 3389 case Calibration::ORIENTATION_CALIBRATION_INTERPOLATED: 3390 orientation = in.orientation * mLocked.orientationScale; 3391 break; 3392 case Calibration::ORIENTATION_CALIBRATION_VECTOR: { 3393 int32_t c1 = signExtendNybble((in.orientation & 0xf0) >> 4); 3394 int32_t c2 = signExtendNybble(in.orientation & 0x0f); 3395 if (c1 != 0 || c2 != 0) { 3396 orientation = atan2f(c1, c2) * 0.5f; 3397 float scale = 1.0f + hypotf(c1, c2) / 16.0f; 3398 touchMajor *= scale; 3399 touchMinor /= scale; 3400 toolMajor *= scale; 3401 toolMinor /= scale; 3402 } else { 3403 orientation = 0; 3404 } 3405 break; 3406 } 3407 default: 3408 orientation = 0; 3409 } 3410 3411 // Distance 3412 float distance; 3413 switch (mCalibration.distanceCalibration) { 3414 case Calibration::DISTANCE_CALIBRATION_SCALED: 3415 distance = in.distance * mLocked.distanceScale; 3416 break; 3417 default: 3418 distance = 0; 3419 } 3420 3421 // X and Y 3422 // Adjust coords for surface orientation. 3423 float x, y; 3424 switch (mLocked.surfaceOrientation) { 3425 case DISPLAY_ORIENTATION_90: 3426 x = float(in.y - mRawAxes.y.minValue) * mLocked.yScale; 3427 y = float(mRawAxes.x.maxValue - in.x) * mLocked.xScale; 3428 orientation -= M_PI_2; 3429 if (orientation < - M_PI_2) { 3430 orientation += M_PI; 3431 } 3432 break; 3433 case DISPLAY_ORIENTATION_180: 3434 x = float(mRawAxes.x.maxValue - in.x) * mLocked.xScale; 3435 y = float(mRawAxes.y.maxValue - in.y) * mLocked.yScale; 3436 break; 3437 case DISPLAY_ORIENTATION_270: 3438 x = float(mRawAxes.y.maxValue - in.y) * mLocked.yScale; 3439 y = float(in.x - mRawAxes.x.minValue) * mLocked.xScale; 3440 orientation += M_PI_2; 3441 if (orientation > M_PI_2) { 3442 orientation -= M_PI; 3443 } 3444 break; 3445 default: 3446 x = float(in.x - mRawAxes.x.minValue) * mLocked.xScale; 3447 y = float(in.y - mRawAxes.y.minValue) * mLocked.yScale; 3448 break; 3449 } 3450 3451 // Write output coords. 3452 PointerCoords& out = mCurrentTouchCoords[i]; 3453 out.clear(); 3454 out.setAxisValue(AMOTION_EVENT_AXIS_X, x); 3455 out.setAxisValue(AMOTION_EVENT_AXIS_Y, y); 3456 out.setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, pressure); 3457 out.setAxisValue(AMOTION_EVENT_AXIS_SIZE, size); 3458 out.setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, touchMajor); 3459 out.setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, touchMinor); 3460 out.setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, toolMajor); 3461 out.setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, toolMinor); 3462 out.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, orientation); 3463 if (distance != 0) { 3464 out.setAxisValue(AMOTION_EVENT_AXIS_DISTANCE, distance); 3465 } 3466 3467 // Write output properties. 3468 PointerProperties& properties = mCurrentTouchProperties[i]; 3469 properties.clear(); 3470 properties.id = mCurrentTouch.pointers[i].id; 3471 properties.toolType = getTouchToolType(mCurrentTouch.pointers[i].isStylus); 3472 } 3473 3474 // Check edge flags by looking only at the first pointer since the flags are 3475 // global to the event. 3476 *outEdgeFlags = AMOTION_EVENT_EDGE_FLAG_NONE; 3477 if (lastPointerCount == 0 && currentPointerCount > 0) { 3478 const PointerData& in = mCurrentTouch.pointers[0]; 3479 3480 if (in.x <= mRawAxes.x.minValue) { 3481 *outEdgeFlags |= rotateEdgeFlag(AMOTION_EVENT_EDGE_FLAG_LEFT, 3482 mLocked.surfaceOrientation); 3483 } else if (in.x >= mRawAxes.x.maxValue) { 3484 *outEdgeFlags |= rotateEdgeFlag(AMOTION_EVENT_EDGE_FLAG_RIGHT, 3485 mLocked.surfaceOrientation); 3486 } 3487 if (in.y <= mRawAxes.y.minValue) { 3488 *outEdgeFlags |= rotateEdgeFlag(AMOTION_EVENT_EDGE_FLAG_TOP, 3489 mLocked.surfaceOrientation); 3490 } else if (in.y >= mRawAxes.y.maxValue) { 3491 *outEdgeFlags |= rotateEdgeFlag(AMOTION_EVENT_EDGE_FLAG_BOTTOM, 3492 mLocked.surfaceOrientation); 3493 } 3494 } 3495 3496 *outXPrecision = mLocked.orientedXPrecision; 3497 *outYPrecision = mLocked.orientedYPrecision; 3498} 3499 3500void TouchInputMapper::dispatchPointerGestures(nsecs_t when, uint32_t policyFlags, 3501 bool isTimeout) { 3502 // Update current gesture coordinates. 3503 bool cancelPreviousGesture, finishPreviousGesture; 3504 bool sendEvents = preparePointerGestures(when, 3505 &cancelPreviousGesture, &finishPreviousGesture, isTimeout); 3506 if (!sendEvents) { 3507 return; 3508 } 3509 if (finishPreviousGesture) { 3510 cancelPreviousGesture = false; 3511 } 3512 3513 // Update the pointer presentation and spots. 3514 if (mParameters.gestureMode == Parameters::GESTURE_MODE_SPOTS) { 3515 mPointerController->setPresentation(PointerControllerInterface::PRESENTATION_SPOT); 3516 if (finishPreviousGesture || cancelPreviousGesture) { 3517 mPointerController->clearSpots(); 3518 } 3519 mPointerController->setSpots(mPointerGesture.currentGestureCoords, 3520 mPointerGesture.currentGestureIdToIndex, 3521 mPointerGesture.currentGestureIdBits); 3522 } else { 3523 mPointerController->setPresentation(PointerControllerInterface::PRESENTATION_POINTER); 3524 } 3525 3526 // Show or hide the pointer if needed. 3527 switch (mPointerGesture.currentGestureMode) { 3528 case PointerGesture::NEUTRAL: 3529 case PointerGesture::QUIET: 3530 if (mParameters.gestureMode == Parameters::GESTURE_MODE_SPOTS 3531 && (mPointerGesture.lastGestureMode == PointerGesture::SWIPE 3532 || mPointerGesture.lastGestureMode == PointerGesture::FREEFORM)) { 3533 // Remind the user of where the pointer is after finishing a gesture with spots. 3534 mPointerController->unfade(PointerControllerInterface::TRANSITION_GRADUAL); 3535 } 3536 break; 3537 case PointerGesture::TAP: 3538 case PointerGesture::TAP_DRAG: 3539 case PointerGesture::BUTTON_CLICK_OR_DRAG: 3540 case PointerGesture::HOVER: 3541 case PointerGesture::PRESS: 3542 // Unfade the pointer when the current gesture manipulates the 3543 // area directly under the pointer. 3544 mPointerController->unfade(PointerControllerInterface::TRANSITION_IMMEDIATE); 3545 break; 3546 case PointerGesture::SWIPE: 3547 case PointerGesture::FREEFORM: 3548 // Fade the pointer when the current gesture manipulates a different 3549 // area and there are spots to guide the user experience. 3550 if (mParameters.gestureMode == Parameters::GESTURE_MODE_SPOTS) { 3551 mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL); 3552 } else { 3553 mPointerController->unfade(PointerControllerInterface::TRANSITION_IMMEDIATE); 3554 } 3555 break; 3556 } 3557 3558 // Send events! 3559 int32_t metaState = getContext()->getGlobalMetaState(); 3560 int32_t buttonState = mCurrentTouch.buttonState; 3561 3562 // Update last coordinates of pointers that have moved so that we observe the new 3563 // pointer positions at the same time as other pointers that have just gone up. 3564 bool down = mPointerGesture.currentGestureMode == PointerGesture::TAP 3565 || mPointerGesture.currentGestureMode == PointerGesture::TAP_DRAG 3566 || mPointerGesture.currentGestureMode == PointerGesture::BUTTON_CLICK_OR_DRAG 3567 || mPointerGesture.currentGestureMode == PointerGesture::PRESS 3568 || mPointerGesture.currentGestureMode == PointerGesture::SWIPE 3569 || mPointerGesture.currentGestureMode == PointerGesture::FREEFORM; 3570 bool moveNeeded = false; 3571 if (down && !cancelPreviousGesture && !finishPreviousGesture 3572 && !mPointerGesture.lastGestureIdBits.isEmpty() 3573 && !mPointerGesture.currentGestureIdBits.isEmpty()) { 3574 BitSet32 movedGestureIdBits(mPointerGesture.currentGestureIdBits.value 3575 & mPointerGesture.lastGestureIdBits.value); 3576 moveNeeded = updateMovedPointers(mPointerGesture.currentGestureProperties, 3577 mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex, 3578 mPointerGesture.lastGestureProperties, 3579 mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex, 3580 movedGestureIdBits); 3581 if (buttonState != mLastTouch.buttonState) { 3582 moveNeeded = true; 3583 } 3584 } 3585 3586 // Send motion events for all pointers that went up or were canceled. 3587 BitSet32 dispatchedGestureIdBits(mPointerGesture.lastGestureIdBits); 3588 if (!dispatchedGestureIdBits.isEmpty()) { 3589 if (cancelPreviousGesture) { 3590 dispatchMotion(when, policyFlags, mPointerSource, 3591 AMOTION_EVENT_ACTION_CANCEL, 0, metaState, buttonState, 3592 AMOTION_EVENT_EDGE_FLAG_NONE, 3593 mPointerGesture.lastGestureProperties, 3594 mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex, 3595 dispatchedGestureIdBits, -1, 3596 0, 0, mPointerGesture.downTime); 3597 3598 dispatchedGestureIdBits.clear(); 3599 } else { 3600 BitSet32 upGestureIdBits; 3601 if (finishPreviousGesture) { 3602 upGestureIdBits = dispatchedGestureIdBits; 3603 } else { 3604 upGestureIdBits.value = dispatchedGestureIdBits.value 3605 & ~mPointerGesture.currentGestureIdBits.value; 3606 } 3607 while (!upGestureIdBits.isEmpty()) { 3608 uint32_t id = upGestureIdBits.firstMarkedBit(); 3609 upGestureIdBits.clearBit(id); 3610 3611 dispatchMotion(when, policyFlags, mPointerSource, 3612 AMOTION_EVENT_ACTION_POINTER_UP, 0, 3613 metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, 3614 mPointerGesture.lastGestureProperties, 3615 mPointerGesture.lastGestureCoords, mPointerGesture.lastGestureIdToIndex, 3616 dispatchedGestureIdBits, id, 3617 0, 0, mPointerGesture.downTime); 3618 3619 dispatchedGestureIdBits.clearBit(id); 3620 } 3621 } 3622 } 3623 3624 // Send motion events for all pointers that moved. 3625 if (moveNeeded) { 3626 dispatchMotion(when, policyFlags, mPointerSource, 3627 AMOTION_EVENT_ACTION_MOVE, 0, metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, 3628 mPointerGesture.currentGestureProperties, 3629 mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex, 3630 dispatchedGestureIdBits, -1, 3631 0, 0, mPointerGesture.downTime); 3632 } 3633 3634 // Send motion events for all pointers that went down. 3635 if (down) { 3636 BitSet32 downGestureIdBits(mPointerGesture.currentGestureIdBits.value 3637 & ~dispatchedGestureIdBits.value); 3638 while (!downGestureIdBits.isEmpty()) { 3639 uint32_t id = downGestureIdBits.firstMarkedBit(); 3640 downGestureIdBits.clearBit(id); 3641 dispatchedGestureIdBits.markBit(id); 3642 3643 int32_t edgeFlags = AMOTION_EVENT_EDGE_FLAG_NONE; 3644 if (dispatchedGestureIdBits.count() == 1) { 3645 // First pointer is going down. Calculate edge flags and set down time. 3646 uint32_t index = mPointerGesture.currentGestureIdToIndex[id]; 3647 const PointerCoords& downCoords = mPointerGesture.currentGestureCoords[index]; 3648 edgeFlags = calculateEdgeFlagsUsingPointerBounds(mPointerController, 3649 downCoords.getAxisValue(AMOTION_EVENT_AXIS_X), 3650 downCoords.getAxisValue(AMOTION_EVENT_AXIS_Y)); 3651 mPointerGesture.downTime = when; 3652 } 3653 3654 dispatchMotion(when, policyFlags, mPointerSource, 3655 AMOTION_EVENT_ACTION_POINTER_DOWN, 0, metaState, buttonState, edgeFlags, 3656 mPointerGesture.currentGestureProperties, 3657 mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex, 3658 dispatchedGestureIdBits, id, 3659 0, 0, mPointerGesture.downTime); 3660 } 3661 } 3662 3663 // Send motion events for hover. 3664 if (mPointerGesture.currentGestureMode == PointerGesture::HOVER) { 3665 dispatchMotion(when, policyFlags, mPointerSource, 3666 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 3667 metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, 3668 mPointerGesture.currentGestureProperties, 3669 mPointerGesture.currentGestureCoords, mPointerGesture.currentGestureIdToIndex, 3670 mPointerGesture.currentGestureIdBits, -1, 3671 0, 0, mPointerGesture.downTime); 3672 } else if (dispatchedGestureIdBits.isEmpty() 3673 && !mPointerGesture.lastGestureIdBits.isEmpty()) { 3674 // Synthesize a hover move event after all pointers go up to indicate that 3675 // the pointer is hovering again even if the user is not currently touching 3676 // the touch pad. This ensures that a view will receive a fresh hover enter 3677 // event after a tap. 3678 float x, y; 3679 mPointerController->getPosition(&x, &y); 3680 3681 PointerProperties pointerProperties; 3682 pointerProperties.clear(); 3683 pointerProperties.id = 0; 3684 pointerProperties.toolType = AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 3685 3686 PointerCoords pointerCoords; 3687 pointerCoords.clear(); 3688 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_X, x); 3689 pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, y); 3690 3691 getDispatcher()->notifyMotion(when, getDeviceId(), mPointerSource, policyFlags, 3692 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 3693 metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, 3694 1, &pointerProperties, &pointerCoords, 0, 0, mPointerGesture.downTime); 3695 } 3696 3697 // Update state. 3698 mPointerGesture.lastGestureMode = mPointerGesture.currentGestureMode; 3699 if (!down) { 3700 mPointerGesture.lastGestureIdBits.clear(); 3701 } else { 3702 mPointerGesture.lastGestureIdBits = mPointerGesture.currentGestureIdBits; 3703 for (BitSet32 idBits(mPointerGesture.currentGestureIdBits); !idBits.isEmpty(); ) { 3704 uint32_t id = idBits.firstMarkedBit(); 3705 idBits.clearBit(id); 3706 uint32_t index = mPointerGesture.currentGestureIdToIndex[id]; 3707 mPointerGesture.lastGestureProperties[index].copyFrom( 3708 mPointerGesture.currentGestureProperties[index]); 3709 mPointerGesture.lastGestureCoords[index].copyFrom( 3710 mPointerGesture.currentGestureCoords[index]); 3711 mPointerGesture.lastGestureIdToIndex[id] = index; 3712 } 3713 } 3714} 3715 3716bool TouchInputMapper::preparePointerGestures(nsecs_t when, 3717 bool* outCancelPreviousGesture, bool* outFinishPreviousGesture, bool isTimeout) { 3718 *outCancelPreviousGesture = false; 3719 *outFinishPreviousGesture = false; 3720 3721 AutoMutex _l(mLock); 3722 3723 // Handle TAP timeout. 3724 if (isTimeout) { 3725#if DEBUG_GESTURES 3726 LOGD("Gestures: Processing timeout"); 3727#endif 3728 3729 if (mPointerGesture.lastGestureMode == PointerGesture::TAP) { 3730 if (when <= mPointerGesture.tapUpTime + mConfig.pointerGestureTapDragInterval) { 3731 // The tap/drag timeout has not yet expired. 3732 getContext()->requestTimeoutAtTime(mPointerGesture.tapUpTime 3733 + mConfig.pointerGestureTapDragInterval); 3734 } else { 3735 // The tap is finished. 3736#if DEBUG_GESTURES 3737 LOGD("Gestures: TAP finished"); 3738#endif 3739 *outFinishPreviousGesture = true; 3740 3741 mPointerGesture.activeGestureId = -1; 3742 mPointerGesture.currentGestureMode = PointerGesture::NEUTRAL; 3743 mPointerGesture.currentGestureIdBits.clear(); 3744 3745 mPointerGesture.pointerVelocityControl.reset(); 3746 return true; 3747 } 3748 } 3749 3750 // We did not handle this timeout. 3751 return false; 3752 } 3753 3754 // Update the velocity tracker. 3755 { 3756 VelocityTracker::Position positions[MAX_POINTERS]; 3757 uint32_t count = 0; 3758 for (BitSet32 idBits(mCurrentTouch.idBits); !idBits.isEmpty(); count++) { 3759 uint32_t id = idBits.firstMarkedBit(); 3760 idBits.clearBit(id); 3761 uint32_t index = mCurrentTouch.idToIndex[id]; 3762 positions[count].x = mCurrentTouch.pointers[index].x 3763 * mLocked.pointerGestureXMovementScale; 3764 positions[count].y = mCurrentTouch.pointers[index].y 3765 * mLocked.pointerGestureYMovementScale; 3766 } 3767 mPointerGesture.velocityTracker.addMovement(when, mCurrentTouch.idBits, positions); 3768 } 3769 3770 // Pick a new active touch id if needed. 3771 // Choose an arbitrary pointer that just went down, if there is one. 3772 // Otherwise choose an arbitrary remaining pointer. 3773 // This guarantees we always have an active touch id when there is at least one pointer. 3774 // We keep the same active touch id for as long as possible. 3775 bool activeTouchChanged = false; 3776 int32_t lastActiveTouchId = mPointerGesture.activeTouchId; 3777 int32_t activeTouchId = lastActiveTouchId; 3778 if (activeTouchId < 0) { 3779 if (!mCurrentTouch.idBits.isEmpty()) { 3780 activeTouchChanged = true; 3781 activeTouchId = mPointerGesture.activeTouchId = mCurrentTouch.idBits.firstMarkedBit(); 3782 mPointerGesture.firstTouchTime = when; 3783 } 3784 } else if (!mCurrentTouch.idBits.hasBit(activeTouchId)) { 3785 activeTouchChanged = true; 3786 if (!mCurrentTouch.idBits.isEmpty()) { 3787 activeTouchId = mPointerGesture.activeTouchId = mCurrentTouch.idBits.firstMarkedBit(); 3788 } else { 3789 activeTouchId = mPointerGesture.activeTouchId = -1; 3790 } 3791 } 3792 3793 // Determine whether we are in quiet time. 3794 bool isQuietTime = false; 3795 if (activeTouchId < 0) { 3796 mPointerGesture.resetQuietTime(); 3797 } else { 3798 isQuietTime = when < mPointerGesture.quietTime + mConfig.pointerGestureQuietInterval; 3799 if (!isQuietTime) { 3800 if ((mPointerGesture.lastGestureMode == PointerGesture::PRESS 3801 || mPointerGesture.lastGestureMode == PointerGesture::SWIPE 3802 || mPointerGesture.lastGestureMode == PointerGesture::FREEFORM) 3803 && mCurrentTouch.pointerCount < 2) { 3804 // Enter quiet time when exiting swipe or freeform state. 3805 // This is to prevent accidentally entering the hover state and flinging the 3806 // pointer when finishing a swipe and there is still one pointer left onscreen. 3807 isQuietTime = true; 3808 } else if (mPointerGesture.lastGestureMode == PointerGesture::BUTTON_CLICK_OR_DRAG 3809 && mCurrentTouch.pointerCount >= 2 3810 && !isPointerDown(mCurrentTouch.buttonState)) { 3811 // Enter quiet time when releasing the button and there are still two or more 3812 // fingers down. This may indicate that one finger was used to press the button 3813 // but it has not gone up yet. 3814 isQuietTime = true; 3815 } 3816 if (isQuietTime) { 3817 mPointerGesture.quietTime = when; 3818 } 3819 } 3820 } 3821 3822 // Switch states based on button and pointer state. 3823 if (isQuietTime) { 3824 // Case 1: Quiet time. (QUIET) 3825#if DEBUG_GESTURES 3826 LOGD("Gestures: QUIET for next %0.3fms", (mPointerGesture.quietTime 3827 + mConfig.pointerGestureQuietInterval - when) * 0.000001f); 3828#endif 3829 if (mPointerGesture.lastGestureMode != PointerGesture::QUIET) { 3830 *outFinishPreviousGesture = true; 3831 } 3832 3833 mPointerGesture.activeGestureId = -1; 3834 mPointerGesture.currentGestureMode = PointerGesture::QUIET; 3835 mPointerGesture.currentGestureIdBits.clear(); 3836 3837 mPointerGesture.pointerVelocityControl.reset(); 3838 } else if (isPointerDown(mCurrentTouch.buttonState)) { 3839 // Case 2: Button is pressed. (BUTTON_CLICK_OR_DRAG) 3840 // The pointer follows the active touch point. 3841 // Emit DOWN, MOVE, UP events at the pointer location. 3842 // 3843 // Only the active touch matters; other fingers are ignored. This policy helps 3844 // to handle the case where the user places a second finger on the touch pad 3845 // to apply the necessary force to depress an integrated button below the surface. 3846 // We don't want the second finger to be delivered to applications. 3847 // 3848 // For this to work well, we need to make sure to track the pointer that is really 3849 // active. If the user first puts one finger down to click then adds another 3850 // finger to drag then the active pointer should switch to the finger that is 3851 // being dragged. 3852#if DEBUG_GESTURES 3853 LOGD("Gestures: BUTTON_CLICK_OR_DRAG activeTouchId=%d, " 3854 "currentTouchPointerCount=%d", activeTouchId, mCurrentTouch.pointerCount); 3855#endif 3856 // Reset state when just starting. 3857 if (mPointerGesture.lastGestureMode != PointerGesture::BUTTON_CLICK_OR_DRAG) { 3858 *outFinishPreviousGesture = true; 3859 mPointerGesture.activeGestureId = 0; 3860 } 3861 3862 // Switch pointers if needed. 3863 // Find the fastest pointer and follow it. 3864 if (activeTouchId >= 0 && mCurrentTouch.pointerCount > 1) { 3865 int32_t bestId = -1; 3866 float bestSpeed = mConfig.pointerGestureDragMinSwitchSpeed; 3867 for (uint32_t i = 0; i < mCurrentTouch.pointerCount; i++) { 3868 uint32_t id = mCurrentTouch.pointers[i].id; 3869 float vx, vy; 3870 if (mPointerGesture.velocityTracker.getVelocity(id, &vx, &vy)) { 3871 float speed = hypotf(vx, vy); 3872 if (speed > bestSpeed) { 3873 bestId = id; 3874 bestSpeed = speed; 3875 } 3876 } 3877 } 3878 if (bestId >= 0 && bestId != activeTouchId) { 3879 mPointerGesture.activeTouchId = activeTouchId = bestId; 3880 activeTouchChanged = true; 3881#if DEBUG_GESTURES 3882 LOGD("Gestures: BUTTON_CLICK_OR_DRAG switched pointers, " 3883 "bestId=%d, bestSpeed=%0.3f", bestId, bestSpeed); 3884#endif 3885 } 3886 } 3887 3888 if (activeTouchId >= 0 && mLastTouch.idBits.hasBit(activeTouchId)) { 3889 const PointerData& currentPointer = 3890 mCurrentTouch.pointers[mCurrentTouch.idToIndex[activeTouchId]]; 3891 const PointerData& lastPointer = 3892 mLastTouch.pointers[mLastTouch.idToIndex[activeTouchId]]; 3893 float deltaX = (currentPointer.x - lastPointer.x) 3894 * mLocked.pointerGestureXMovementScale; 3895 float deltaY = (currentPointer.y - lastPointer.y) 3896 * mLocked.pointerGestureYMovementScale; 3897 3898 mPointerGesture.pointerVelocityControl.move(when, &deltaX, &deltaY); 3899 3900 // Move the pointer using a relative motion. 3901 // When using spots, the click will occur at the position of the anchor 3902 // spot and all other spots will move there. 3903 mPointerController->move(deltaX, deltaY); 3904 } else { 3905 mPointerGesture.pointerVelocityControl.reset(); 3906 } 3907 3908 float x, y; 3909 mPointerController->getPosition(&x, &y); 3910 3911 mPointerGesture.currentGestureMode = PointerGesture::BUTTON_CLICK_OR_DRAG; 3912 mPointerGesture.currentGestureIdBits.clear(); 3913 mPointerGesture.currentGestureIdBits.markBit(mPointerGesture.activeGestureId); 3914 mPointerGesture.currentGestureIdToIndex[mPointerGesture.activeGestureId] = 0; 3915 mPointerGesture.currentGestureProperties[0].clear(); 3916 mPointerGesture.currentGestureProperties[0].id = mPointerGesture.activeGestureId; 3917 mPointerGesture.currentGestureProperties[0].toolType = 3918 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 3919 mPointerGesture.currentGestureCoords[0].clear(); 3920 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, x); 3921 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, y); 3922 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 1.0f); 3923 } else if (mCurrentTouch.pointerCount == 0) { 3924 // Case 3. No fingers down and button is not pressed. (NEUTRAL) 3925 if (mPointerGesture.lastGestureMode != PointerGesture::NEUTRAL) { 3926 *outFinishPreviousGesture = true; 3927 } 3928 3929 // Watch for taps coming out of HOVER or TAP_DRAG mode. 3930 // Checking for taps after TAP_DRAG allows us to detect double-taps. 3931 bool tapped = false; 3932 if ((mPointerGesture.lastGestureMode == PointerGesture::HOVER 3933 || mPointerGesture.lastGestureMode == PointerGesture::TAP_DRAG) 3934 && mLastTouch.pointerCount == 1) { 3935 if (when <= mPointerGesture.tapDownTime + mConfig.pointerGestureTapInterval) { 3936 float x, y; 3937 mPointerController->getPosition(&x, &y); 3938 if (fabs(x - mPointerGesture.tapX) <= mConfig.pointerGestureTapSlop 3939 && fabs(y - mPointerGesture.tapY) <= mConfig.pointerGestureTapSlop) { 3940#if DEBUG_GESTURES 3941 LOGD("Gestures: TAP"); 3942#endif 3943 3944 mPointerGesture.tapUpTime = when; 3945 getContext()->requestTimeoutAtTime(when 3946 + mConfig.pointerGestureTapDragInterval); 3947 3948 mPointerGesture.activeGestureId = 0; 3949 mPointerGesture.currentGestureMode = PointerGesture::TAP; 3950 mPointerGesture.currentGestureIdBits.clear(); 3951 mPointerGesture.currentGestureIdBits.markBit( 3952 mPointerGesture.activeGestureId); 3953 mPointerGesture.currentGestureIdToIndex[ 3954 mPointerGesture.activeGestureId] = 0; 3955 mPointerGesture.currentGestureProperties[0].clear(); 3956 mPointerGesture.currentGestureProperties[0].id = 3957 mPointerGesture.activeGestureId; 3958 mPointerGesture.currentGestureProperties[0].toolType = 3959 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 3960 mPointerGesture.currentGestureCoords[0].clear(); 3961 mPointerGesture.currentGestureCoords[0].setAxisValue( 3962 AMOTION_EVENT_AXIS_X, mPointerGesture.tapX); 3963 mPointerGesture.currentGestureCoords[0].setAxisValue( 3964 AMOTION_EVENT_AXIS_Y, mPointerGesture.tapY); 3965 mPointerGesture.currentGestureCoords[0].setAxisValue( 3966 AMOTION_EVENT_AXIS_PRESSURE, 1.0f); 3967 3968 tapped = true; 3969 } else { 3970#if DEBUG_GESTURES 3971 LOGD("Gestures: Not a TAP, deltaX=%f, deltaY=%f", 3972 x - mPointerGesture.tapX, 3973 y - mPointerGesture.tapY); 3974#endif 3975 } 3976 } else { 3977#if DEBUG_GESTURES 3978 LOGD("Gestures: Not a TAP, %0.3fms since down", 3979 (when - mPointerGesture.tapDownTime) * 0.000001f); 3980#endif 3981 } 3982 } 3983 3984 mPointerGesture.pointerVelocityControl.reset(); 3985 3986 if (!tapped) { 3987#if DEBUG_GESTURES 3988 LOGD("Gestures: NEUTRAL"); 3989#endif 3990 mPointerGesture.activeGestureId = -1; 3991 mPointerGesture.currentGestureMode = PointerGesture::NEUTRAL; 3992 mPointerGesture.currentGestureIdBits.clear(); 3993 } 3994 } else if (mCurrentTouch.pointerCount == 1) { 3995 // Case 4. Exactly one finger down, button is not pressed. (HOVER or TAP_DRAG) 3996 // The pointer follows the active touch point. 3997 // When in HOVER, emit HOVER_MOVE events at the pointer location. 3998 // When in TAP_DRAG, emit MOVE events at the pointer location. 3999 LOG_ASSERT(activeTouchId >= 0); 4000 4001 mPointerGesture.currentGestureMode = PointerGesture::HOVER; 4002 if (mPointerGesture.lastGestureMode == PointerGesture::TAP) { 4003 if (when <= mPointerGesture.tapUpTime + mConfig.pointerGestureTapDragInterval) { 4004 float x, y; 4005 mPointerController->getPosition(&x, &y); 4006 if (fabs(x - mPointerGesture.tapX) <= mConfig.pointerGestureTapSlop 4007 && fabs(y - mPointerGesture.tapY) <= mConfig.pointerGestureTapSlop) { 4008 mPointerGesture.currentGestureMode = PointerGesture::TAP_DRAG; 4009 } else { 4010#if DEBUG_GESTURES 4011 LOGD("Gestures: Not a TAP_DRAG, deltaX=%f, deltaY=%f", 4012 x - mPointerGesture.tapX, 4013 y - mPointerGesture.tapY); 4014#endif 4015 } 4016 } else { 4017#if DEBUG_GESTURES 4018 LOGD("Gestures: Not a TAP_DRAG, %0.3fms time since up", 4019 (when - mPointerGesture.tapUpTime) * 0.000001f); 4020#endif 4021 } 4022 } else if (mPointerGesture.lastGestureMode == PointerGesture::TAP_DRAG) { 4023 mPointerGesture.currentGestureMode = PointerGesture::TAP_DRAG; 4024 } 4025 4026 if (mLastTouch.idBits.hasBit(activeTouchId)) { 4027 const PointerData& currentPointer = 4028 mCurrentTouch.pointers[mCurrentTouch.idToIndex[activeTouchId]]; 4029 const PointerData& lastPointer = 4030 mLastTouch.pointers[mLastTouch.idToIndex[activeTouchId]]; 4031 float deltaX = (currentPointer.x - lastPointer.x) 4032 * mLocked.pointerGestureXMovementScale; 4033 float deltaY = (currentPointer.y - lastPointer.y) 4034 * mLocked.pointerGestureYMovementScale; 4035 4036 mPointerGesture.pointerVelocityControl.move(when, &deltaX, &deltaY); 4037 4038 // Move the pointer using a relative motion. 4039 // When using spots, the hover or drag will occur at the position of the anchor spot. 4040 mPointerController->move(deltaX, deltaY); 4041 } else { 4042 mPointerGesture.pointerVelocityControl.reset(); 4043 } 4044 4045 bool down; 4046 if (mPointerGesture.currentGestureMode == PointerGesture::TAP_DRAG) { 4047#if DEBUG_GESTURES 4048 LOGD("Gestures: TAP_DRAG"); 4049#endif 4050 down = true; 4051 } else { 4052#if DEBUG_GESTURES 4053 LOGD("Gestures: HOVER"); 4054#endif 4055 if (mPointerGesture.lastGestureMode != PointerGesture::HOVER) { 4056 *outFinishPreviousGesture = true; 4057 } 4058 mPointerGesture.activeGestureId = 0; 4059 down = false; 4060 } 4061 4062 float x, y; 4063 mPointerController->getPosition(&x, &y); 4064 4065 mPointerGesture.currentGestureIdBits.clear(); 4066 mPointerGesture.currentGestureIdBits.markBit(mPointerGesture.activeGestureId); 4067 mPointerGesture.currentGestureIdToIndex[mPointerGesture.activeGestureId] = 0; 4068 mPointerGesture.currentGestureProperties[0].clear(); 4069 mPointerGesture.currentGestureProperties[0].id = mPointerGesture.activeGestureId; 4070 mPointerGesture.currentGestureProperties[0].toolType = 4071 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 4072 mPointerGesture.currentGestureCoords[0].clear(); 4073 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, x); 4074 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, y); 4075 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 4076 down ? 1.0f : 0.0f); 4077 4078 if (mLastTouch.pointerCount == 0 && mCurrentTouch.pointerCount != 0) { 4079 mPointerGesture.resetTap(); 4080 mPointerGesture.tapDownTime = when; 4081 mPointerGesture.tapX = x; 4082 mPointerGesture.tapY = y; 4083 } 4084 } else { 4085 // Case 5. At least two fingers down, button is not pressed. (PRESS, SWIPE or FREEFORM) 4086 // We need to provide feedback for each finger that goes down so we cannot wait 4087 // for the fingers to move before deciding what to do. 4088 // 4089 // The ambiguous case is deciding what to do when there are two fingers down but they 4090 // have not moved enough to determine whether they are part of a drag or part of a 4091 // freeform gesture, or just a press or long-press at the pointer location. 4092 // 4093 // When there are two fingers we start with the PRESS hypothesis and we generate a 4094 // down at the pointer location. 4095 // 4096 // When the two fingers move enough or when additional fingers are added, we make 4097 // a decision to transition into SWIPE or FREEFORM mode accordingly. 4098 LOG_ASSERT(activeTouchId >= 0); 4099 4100 bool settled = when >= mPointerGesture.firstTouchTime 4101 + mConfig.pointerGestureMultitouchSettleInterval; 4102 if (mPointerGesture.lastGestureMode != PointerGesture::PRESS 4103 && mPointerGesture.lastGestureMode != PointerGesture::SWIPE 4104 && mPointerGesture.lastGestureMode != PointerGesture::FREEFORM) { 4105 *outFinishPreviousGesture = true; 4106 } else if (!settled && mCurrentTouch.pointerCount > mLastTouch.pointerCount) { 4107 // Additional pointers have gone down but not yet settled. 4108 // Reset the gesture. 4109#if DEBUG_GESTURES 4110 LOGD("Gestures: Resetting gesture since additional pointers went down for MULTITOUCH, " 4111 "settle time remaining %0.3fms", (mPointerGesture.firstTouchTime 4112 + mConfig.pointerGestureMultitouchSettleInterval - when) 4113 * 0.000001f); 4114#endif 4115 *outCancelPreviousGesture = true; 4116 } else { 4117 // Continue previous gesture. 4118 mPointerGesture.currentGestureMode = mPointerGesture.lastGestureMode; 4119 } 4120 4121 if (*outFinishPreviousGesture || *outCancelPreviousGesture) { 4122 mPointerGesture.currentGestureMode = PointerGesture::PRESS; 4123 mPointerGesture.activeGestureId = 0; 4124 mPointerGesture.referenceIdBits.clear(); 4125 mPointerGesture.pointerVelocityControl.reset(); 4126 4127 // Use the centroid and pointer location as the reference points for the gesture. 4128#if DEBUG_GESTURES 4129 LOGD("Gestures: Using centroid as reference for MULTITOUCH, " 4130 "settle time remaining %0.3fms", (mPointerGesture.firstTouchTime 4131 + mConfig.pointerGestureMultitouchSettleInterval - when) 4132 * 0.000001f); 4133#endif 4134 mCurrentTouch.getCentroid(&mPointerGesture.referenceTouchX, 4135 &mPointerGesture.referenceTouchY); 4136 mPointerController->getPosition(&mPointerGesture.referenceGestureX, 4137 &mPointerGesture.referenceGestureY); 4138 } 4139 4140 // Clear the reference deltas for fingers not yet included in the reference calculation. 4141 for (BitSet32 idBits(mCurrentTouch.idBits.value & ~mPointerGesture.referenceIdBits.value); 4142 !idBits.isEmpty(); ) { 4143 uint32_t id = idBits.firstMarkedBit(); 4144 idBits.clearBit(id); 4145 4146 mPointerGesture.referenceDeltas[id].dx = 0; 4147 mPointerGesture.referenceDeltas[id].dy = 0; 4148 } 4149 mPointerGesture.referenceIdBits = mCurrentTouch.idBits; 4150 4151 // Add delta for all fingers and calculate a common movement delta. 4152 float commonDeltaX = 0, commonDeltaY = 0; 4153 BitSet32 commonIdBits(mLastTouch.idBits.value & mCurrentTouch.idBits.value); 4154 for (BitSet32 idBits(commonIdBits); !idBits.isEmpty(); ) { 4155 bool first = (idBits == commonIdBits); 4156 uint32_t id = idBits.firstMarkedBit(); 4157 idBits.clearBit(id); 4158 4159 const PointerData& cpd = mCurrentTouch.pointers[mCurrentTouch.idToIndex[id]]; 4160 const PointerData& lpd = mLastTouch.pointers[mLastTouch.idToIndex[id]]; 4161 PointerGesture::Delta& delta = mPointerGesture.referenceDeltas[id]; 4162 delta.dx += cpd.x - lpd.x; 4163 delta.dy += cpd.y - lpd.y; 4164 4165 if (first) { 4166 commonDeltaX = delta.dx; 4167 commonDeltaY = delta.dy; 4168 } else { 4169 commonDeltaX = calculateCommonVector(commonDeltaX, delta.dx); 4170 commonDeltaY = calculateCommonVector(commonDeltaY, delta.dy); 4171 } 4172 } 4173 4174 // Consider transitions from PRESS to SWIPE or MULTITOUCH. 4175 if (mPointerGesture.currentGestureMode == PointerGesture::PRESS) { 4176 float dist[MAX_POINTER_ID + 1]; 4177 int32_t distOverThreshold = 0; 4178 for (BitSet32 idBits(mPointerGesture.referenceIdBits); !idBits.isEmpty(); ) { 4179 uint32_t id = idBits.firstMarkedBit(); 4180 idBits.clearBit(id); 4181 4182 PointerGesture::Delta& delta = mPointerGesture.referenceDeltas[id]; 4183 dist[id] = hypotf(delta.dx * mLocked.pointerGestureXZoomScale, 4184 delta.dy * mLocked.pointerGestureYZoomScale); 4185 if (dist[id] > mConfig.pointerGestureMultitouchMinDistance) { 4186 distOverThreshold += 1; 4187 } 4188 } 4189 4190 // Only transition when at least two pointers have moved further than 4191 // the minimum distance threshold. 4192 if (distOverThreshold >= 2) { 4193 float d; 4194 if (mCurrentTouch.pointerCount > 2) { 4195 // There are more than two pointers, switch to FREEFORM. 4196#if DEBUG_GESTURES 4197 LOGD("Gestures: PRESS transitioned to FREEFORM, number of pointers %d > 2", 4198 mCurrentTouch.pointerCount); 4199#endif 4200 *outCancelPreviousGesture = true; 4201 mPointerGesture.currentGestureMode = PointerGesture::FREEFORM; 4202 } else if (((d = distance( 4203 mCurrentTouch.pointers[0].x, mCurrentTouch.pointers[0].y, 4204 mCurrentTouch.pointers[1].x, mCurrentTouch.pointers[1].y)) 4205 > mLocked.pointerGestureMaxSwipeWidth)) { 4206 // There are two pointers but they are too far apart for a SWIPE, 4207 // switch to FREEFORM. 4208#if DEBUG_GESTURES 4209 LOGD("Gestures: PRESS transitioned to FREEFORM, distance %0.3f > %0.3f", 4210 d, mLocked.pointerGestureMaxSwipeWidth); 4211#endif 4212 *outCancelPreviousGesture = true; 4213 mPointerGesture.currentGestureMode = PointerGesture::FREEFORM; 4214 } else { 4215 // There are two pointers. Wait for both pointers to start moving 4216 // before deciding whether this is a SWIPE or FREEFORM gesture. 4217 uint32_t id1 = mCurrentTouch.pointers[0].id; 4218 uint32_t id2 = mCurrentTouch.pointers[1].id; 4219 float dist1 = dist[id1]; 4220 float dist2 = dist[id2]; 4221 if (dist1 >= mConfig.pointerGestureMultitouchMinDistance 4222 && dist2 >= mConfig.pointerGestureMultitouchMinDistance) { 4223 // Calculate the dot product of the displacement vectors. 4224 // When the vectors are oriented in approximately the same direction, 4225 // the angle betweeen them is near zero and the cosine of the angle 4226 // approches 1.0. Recall that dot(v1, v2) = cos(angle) * mag(v1) * mag(v2). 4227 PointerGesture::Delta& delta1 = mPointerGesture.referenceDeltas[id1]; 4228 PointerGesture::Delta& delta2 = mPointerGesture.referenceDeltas[id2]; 4229 float dx1 = delta1.dx * mLocked.pointerGestureXZoomScale; 4230 float dy1 = delta1.dy * mLocked.pointerGestureYZoomScale; 4231 float dx2 = delta2.dx * mLocked.pointerGestureXZoomScale; 4232 float dy2 = delta2.dy * mLocked.pointerGestureYZoomScale; 4233 float dot = dx1 * dx2 + dy1 * dy2; 4234 float cosine = dot / (dist1 * dist2); // denominator always > 0 4235 if (cosine >= mConfig.pointerGestureSwipeTransitionAngleCosine) { 4236 // Pointers are moving in the same direction. Switch to SWIPE. 4237#if DEBUG_GESTURES 4238 LOGD("Gestures: PRESS transitioned to SWIPE, " 4239 "dist1 %0.3f >= %0.3f, dist2 %0.3f >= %0.3f, " 4240 "cosine %0.3f >= %0.3f", 4241 dist1, mConfig.pointerGestureMultitouchMinDistance, 4242 dist2, mConfig.pointerGestureMultitouchMinDistance, 4243 cosine, mConfig.pointerGestureSwipeTransitionAngleCosine); 4244#endif 4245 mPointerGesture.currentGestureMode = PointerGesture::SWIPE; 4246 } else { 4247 // Pointers are moving in different directions. Switch to FREEFORM. 4248#if DEBUG_GESTURES 4249 LOGD("Gestures: PRESS transitioned to FREEFORM, " 4250 "dist1 %0.3f >= %0.3f, dist2 %0.3f >= %0.3f, " 4251 "cosine %0.3f < %0.3f", 4252 dist1, mConfig.pointerGestureMultitouchMinDistance, 4253 dist2, mConfig.pointerGestureMultitouchMinDistance, 4254 cosine, mConfig.pointerGestureSwipeTransitionAngleCosine); 4255#endif 4256 *outCancelPreviousGesture = true; 4257 mPointerGesture.currentGestureMode = PointerGesture::FREEFORM; 4258 } 4259 } 4260 } 4261 } 4262 } else if (mPointerGesture.currentGestureMode == PointerGesture::SWIPE) { 4263 // Switch from SWIPE to FREEFORM if additional pointers go down. 4264 // Cancel previous gesture. 4265 if (mCurrentTouch.pointerCount > 2) { 4266#if DEBUG_GESTURES 4267 LOGD("Gestures: SWIPE transitioned to FREEFORM, number of pointers %d > 2", 4268 mCurrentTouch.pointerCount); 4269#endif 4270 *outCancelPreviousGesture = true; 4271 mPointerGesture.currentGestureMode = PointerGesture::FREEFORM; 4272 } 4273 } 4274 4275 // Move the reference points based on the overall group motion of the fingers 4276 // except in PRESS mode while waiting for a transition to occur. 4277 if (mPointerGesture.currentGestureMode != PointerGesture::PRESS 4278 && (commonDeltaX || commonDeltaY)) { 4279 for (BitSet32 idBits(mPointerGesture.referenceIdBits); !idBits.isEmpty(); ) { 4280 uint32_t id = idBits.firstMarkedBit(); 4281 idBits.clearBit(id); 4282 4283 PointerGesture::Delta& delta = mPointerGesture.referenceDeltas[id]; 4284 delta.dx = 0; 4285 delta.dy = 0; 4286 } 4287 4288 mPointerGesture.referenceTouchX += commonDeltaX; 4289 mPointerGesture.referenceTouchY += commonDeltaY; 4290 4291 commonDeltaX *= mLocked.pointerGestureXMovementScale; 4292 commonDeltaY *= mLocked.pointerGestureYMovementScale; 4293 mPointerGesture.pointerVelocityControl.move(when, &commonDeltaX, &commonDeltaY); 4294 4295 mPointerGesture.referenceGestureX += commonDeltaX; 4296 mPointerGesture.referenceGestureY += commonDeltaY; 4297 } 4298 4299 // Report gestures. 4300 if (mPointerGesture.currentGestureMode == PointerGesture::PRESS) { 4301 // PRESS mode. 4302#if DEBUG_GESTURES 4303 LOGD("Gestures: PRESS activeTouchId=%d," 4304 "activeGestureId=%d, currentTouchPointerCount=%d", 4305 activeTouchId, mPointerGesture.activeGestureId, mCurrentTouch.pointerCount); 4306#endif 4307 LOG_ASSERT(mPointerGesture.activeGestureId >= 0); 4308 4309 mPointerGesture.currentGestureIdBits.clear(); 4310 mPointerGesture.currentGestureIdBits.markBit(mPointerGesture.activeGestureId); 4311 mPointerGesture.currentGestureIdToIndex[mPointerGesture.activeGestureId] = 0; 4312 mPointerGesture.currentGestureProperties[0].clear(); 4313 mPointerGesture.currentGestureProperties[0].id = mPointerGesture.activeGestureId; 4314 mPointerGesture.currentGestureProperties[0].toolType = 4315 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 4316 mPointerGesture.currentGestureCoords[0].clear(); 4317 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 4318 mPointerGesture.referenceGestureX); 4319 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 4320 mPointerGesture.referenceGestureY); 4321 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 1.0f); 4322 } else if (mPointerGesture.currentGestureMode == PointerGesture::SWIPE) { 4323 // SWIPE mode. 4324#if DEBUG_GESTURES 4325 LOGD("Gestures: SWIPE activeTouchId=%d," 4326 "activeGestureId=%d, currentTouchPointerCount=%d", 4327 activeTouchId, mPointerGesture.activeGestureId, mCurrentTouch.pointerCount); 4328#endif 4329 LOG_ASSERT(mPointerGesture.activeGestureId >= 0); 4330 4331 mPointerGesture.currentGestureIdBits.clear(); 4332 mPointerGesture.currentGestureIdBits.markBit(mPointerGesture.activeGestureId); 4333 mPointerGesture.currentGestureIdToIndex[mPointerGesture.activeGestureId] = 0; 4334 mPointerGesture.currentGestureProperties[0].clear(); 4335 mPointerGesture.currentGestureProperties[0].id = mPointerGesture.activeGestureId; 4336 mPointerGesture.currentGestureProperties[0].toolType = 4337 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 4338 mPointerGesture.currentGestureCoords[0].clear(); 4339 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 4340 mPointerGesture.referenceGestureX); 4341 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 4342 mPointerGesture.referenceGestureY); 4343 mPointerGesture.currentGestureCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 1.0f); 4344 } else if (mPointerGesture.currentGestureMode == PointerGesture::FREEFORM) { 4345 // FREEFORM mode. 4346#if DEBUG_GESTURES 4347 LOGD("Gestures: FREEFORM activeTouchId=%d," 4348 "activeGestureId=%d, currentTouchPointerCount=%d", 4349 activeTouchId, mPointerGesture.activeGestureId, mCurrentTouch.pointerCount); 4350#endif 4351 LOG_ASSERT(mPointerGesture.activeGestureId >= 0); 4352 4353 mPointerGesture.currentGestureIdBits.clear(); 4354 4355 BitSet32 mappedTouchIdBits; 4356 BitSet32 usedGestureIdBits; 4357 if (mPointerGesture.lastGestureMode != PointerGesture::FREEFORM) { 4358 // Initially, assign the active gesture id to the active touch point 4359 // if there is one. No other touch id bits are mapped yet. 4360 if (!*outCancelPreviousGesture) { 4361 mappedTouchIdBits.markBit(activeTouchId); 4362 usedGestureIdBits.markBit(mPointerGesture.activeGestureId); 4363 mPointerGesture.freeformTouchToGestureIdMap[activeTouchId] = 4364 mPointerGesture.activeGestureId; 4365 } else { 4366 mPointerGesture.activeGestureId = -1; 4367 } 4368 } else { 4369 // Otherwise, assume we mapped all touches from the previous frame. 4370 // Reuse all mappings that are still applicable. 4371 mappedTouchIdBits.value = mLastTouch.idBits.value & mCurrentTouch.idBits.value; 4372 usedGestureIdBits = mPointerGesture.lastGestureIdBits; 4373 4374 // Check whether we need to choose a new active gesture id because the 4375 // current went went up. 4376 for (BitSet32 upTouchIdBits(mLastTouch.idBits.value & ~mCurrentTouch.idBits.value); 4377 !upTouchIdBits.isEmpty(); ) { 4378 uint32_t upTouchId = upTouchIdBits.firstMarkedBit(); 4379 upTouchIdBits.clearBit(upTouchId); 4380 uint32_t upGestureId = mPointerGesture.freeformTouchToGestureIdMap[upTouchId]; 4381 if (upGestureId == uint32_t(mPointerGesture.activeGestureId)) { 4382 mPointerGesture.activeGestureId = -1; 4383 break; 4384 } 4385 } 4386 } 4387 4388#if DEBUG_GESTURES 4389 LOGD("Gestures: FREEFORM follow up " 4390 "mappedTouchIdBits=0x%08x, usedGestureIdBits=0x%08x, " 4391 "activeGestureId=%d", 4392 mappedTouchIdBits.value, usedGestureIdBits.value, 4393 mPointerGesture.activeGestureId); 4394#endif 4395 4396 for (uint32_t i = 0; i < mCurrentTouch.pointerCount; i++) { 4397 uint32_t touchId = mCurrentTouch.pointers[i].id; 4398 uint32_t gestureId; 4399 if (!mappedTouchIdBits.hasBit(touchId)) { 4400 gestureId = usedGestureIdBits.firstUnmarkedBit(); 4401 usedGestureIdBits.markBit(gestureId); 4402 mPointerGesture.freeformTouchToGestureIdMap[touchId] = gestureId; 4403#if DEBUG_GESTURES 4404 LOGD("Gestures: FREEFORM " 4405 "new mapping for touch id %d -> gesture id %d", 4406 touchId, gestureId); 4407#endif 4408 } else { 4409 gestureId = mPointerGesture.freeformTouchToGestureIdMap[touchId]; 4410#if DEBUG_GESTURES 4411 LOGD("Gestures: FREEFORM " 4412 "existing mapping for touch id %d -> gesture id %d", 4413 touchId, gestureId); 4414#endif 4415 } 4416 mPointerGesture.currentGestureIdBits.markBit(gestureId); 4417 mPointerGesture.currentGestureIdToIndex[gestureId] = i; 4418 4419 float x = (mCurrentTouch.pointers[i].x - mPointerGesture.referenceTouchX) 4420 * mLocked.pointerGestureXZoomScale + mPointerGesture.referenceGestureX; 4421 float y = (mCurrentTouch.pointers[i].y - mPointerGesture.referenceTouchY) 4422 * mLocked.pointerGestureYZoomScale + mPointerGesture.referenceGestureY; 4423 4424 mPointerGesture.currentGestureProperties[i].clear(); 4425 mPointerGesture.currentGestureProperties[i].id = gestureId; 4426 mPointerGesture.currentGestureProperties[i].toolType = 4427 AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 4428 mPointerGesture.currentGestureCoords[i].clear(); 4429 mPointerGesture.currentGestureCoords[i].setAxisValue( 4430 AMOTION_EVENT_AXIS_X, x); 4431 mPointerGesture.currentGestureCoords[i].setAxisValue( 4432 AMOTION_EVENT_AXIS_Y, y); 4433 mPointerGesture.currentGestureCoords[i].setAxisValue( 4434 AMOTION_EVENT_AXIS_PRESSURE, 1.0f); 4435 } 4436 4437 if (mPointerGesture.activeGestureId < 0) { 4438 mPointerGesture.activeGestureId = 4439 mPointerGesture.currentGestureIdBits.firstMarkedBit(); 4440#if DEBUG_GESTURES 4441 LOGD("Gestures: FREEFORM new " 4442 "activeGestureId=%d", mPointerGesture.activeGestureId); 4443#endif 4444 } 4445 } 4446 } 4447 4448 mPointerController->setButtonState(mCurrentTouch.buttonState); 4449 4450#if DEBUG_GESTURES 4451 LOGD("Gestures: finishPreviousGesture=%s, cancelPreviousGesture=%s, " 4452 "currentGestureMode=%d, currentGestureIdBits=0x%08x, " 4453 "lastGestureMode=%d, lastGestureIdBits=0x%08x", 4454 toString(*outFinishPreviousGesture), toString(*outCancelPreviousGesture), 4455 mPointerGesture.currentGestureMode, mPointerGesture.currentGestureIdBits.value, 4456 mPointerGesture.lastGestureMode, mPointerGesture.lastGestureIdBits.value); 4457 for (BitSet32 idBits = mPointerGesture.currentGestureIdBits; !idBits.isEmpty(); ) { 4458 uint32_t id = idBits.firstMarkedBit(); 4459 idBits.clearBit(id); 4460 uint32_t index = mPointerGesture.currentGestureIdToIndex[id]; 4461 const PointerProperties& properties = mPointerGesture.currentGestureProperties[index]; 4462 const PointerCoords& coords = mPointerGesture.currentGestureCoords[index]; 4463 LOGD(" currentGesture[%d]: index=%d, toolType=%d, " 4464 "x=%0.3f, y=%0.3f, pressure=%0.3f", 4465 id, index, properties.toolType, 4466 coords.getAxisValue(AMOTION_EVENT_AXIS_X), 4467 coords.getAxisValue(AMOTION_EVENT_AXIS_Y), 4468 coords.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE)); 4469 } 4470 for (BitSet32 idBits = mPointerGesture.lastGestureIdBits; !idBits.isEmpty(); ) { 4471 uint32_t id = idBits.firstMarkedBit(); 4472 idBits.clearBit(id); 4473 uint32_t index = mPointerGesture.lastGestureIdToIndex[id]; 4474 const PointerProperties& properties = mPointerGesture.lastGestureProperties[index]; 4475 const PointerCoords& coords = mPointerGesture.lastGestureCoords[index]; 4476 LOGD(" lastGesture[%d]: index=%d, toolType=%d, " 4477 "x=%0.3f, y=%0.3f, pressure=%0.3f", 4478 id, index, properties.toolType, 4479 coords.getAxisValue(AMOTION_EVENT_AXIS_X), 4480 coords.getAxisValue(AMOTION_EVENT_AXIS_Y), 4481 coords.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE)); 4482 } 4483#endif 4484 return true; 4485} 4486 4487void TouchInputMapper::dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source, 4488 int32_t action, int32_t flags, int32_t metaState, int32_t buttonState, int32_t edgeFlags, 4489 const PointerProperties* properties, const PointerCoords* coords, 4490 const uint32_t* idToIndex, BitSet32 idBits, 4491 int32_t changedId, float xPrecision, float yPrecision, nsecs_t downTime) { 4492 PointerCoords pointerCoords[MAX_POINTERS]; 4493 PointerProperties pointerProperties[MAX_POINTERS]; 4494 uint32_t pointerCount = 0; 4495 while (!idBits.isEmpty()) { 4496 uint32_t id = idBits.firstMarkedBit(); 4497 idBits.clearBit(id); 4498 uint32_t index = idToIndex[id]; 4499 pointerProperties[pointerCount].copyFrom(properties[index]); 4500 pointerCoords[pointerCount].copyFrom(coords[index]); 4501 4502 if (changedId >= 0 && id == uint32_t(changedId)) { 4503 action |= pointerCount << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 4504 } 4505 4506 pointerCount += 1; 4507 } 4508 4509 LOG_ASSERT(pointerCount != 0); 4510 4511 if (changedId >= 0 && pointerCount == 1) { 4512 // Replace initial down and final up action. 4513 // We can compare the action without masking off the changed pointer index 4514 // because we know the index is 0. 4515 if (action == AMOTION_EVENT_ACTION_POINTER_DOWN) { 4516 action = AMOTION_EVENT_ACTION_DOWN; 4517 } else if (action == AMOTION_EVENT_ACTION_POINTER_UP) { 4518 action = AMOTION_EVENT_ACTION_UP; 4519 } else { 4520 // Can't happen. 4521 LOG_ASSERT(false); 4522 } 4523 } 4524 4525 getDispatcher()->notifyMotion(when, getDeviceId(), source, policyFlags, 4526 action, flags, metaState, buttonState, edgeFlags, 4527 pointerCount, pointerProperties, pointerCoords, xPrecision, yPrecision, downTime); 4528} 4529 4530bool TouchInputMapper::updateMovedPointers(const PointerProperties* inProperties, 4531 const PointerCoords* inCoords, const uint32_t* inIdToIndex, 4532 PointerProperties* outProperties, PointerCoords* outCoords, const uint32_t* outIdToIndex, 4533 BitSet32 idBits) const { 4534 bool changed = false; 4535 while (!idBits.isEmpty()) { 4536 uint32_t id = idBits.firstMarkedBit(); 4537 idBits.clearBit(id); 4538 4539 uint32_t inIndex = inIdToIndex[id]; 4540 uint32_t outIndex = outIdToIndex[id]; 4541 4542 const PointerProperties& curInProperties = inProperties[inIndex]; 4543 const PointerCoords& curInCoords = inCoords[inIndex]; 4544 PointerProperties& curOutProperties = outProperties[outIndex]; 4545 PointerCoords& curOutCoords = outCoords[outIndex]; 4546 4547 if (curInProperties != curOutProperties) { 4548 curOutProperties.copyFrom(curInProperties); 4549 changed = true; 4550 } 4551 4552 if (curInCoords != curOutCoords) { 4553 curOutCoords.copyFrom(curInCoords); 4554 changed = true; 4555 } 4556 } 4557 return changed; 4558} 4559 4560void TouchInputMapper::fadePointer() { 4561 { // acquire lock 4562 AutoMutex _l(mLock); 4563 if (mPointerController != NULL) { 4564 mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL); 4565 } 4566 } // release lock 4567} 4568 4569int32_t TouchInputMapper::getTouchToolType(bool isStylus) const { 4570 if (mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN) { 4571 return isStylus ? AMOTION_EVENT_TOOL_TYPE_STYLUS : AMOTION_EVENT_TOOL_TYPE_FINGER; 4572 } else { 4573 return isStylus ? AMOTION_EVENT_TOOL_TYPE_INDIRECT_STYLUS 4574 : AMOTION_EVENT_TOOL_TYPE_INDIRECT_FINGER; 4575 } 4576} 4577 4578bool TouchInputMapper::isPointInsideSurfaceLocked(int32_t x, int32_t y) { 4579 return x >= mRawAxes.x.minValue && x <= mRawAxes.x.maxValue 4580 && y >= mRawAxes.y.minValue && y <= mRawAxes.y.maxValue; 4581} 4582 4583const TouchInputMapper::VirtualKey* TouchInputMapper::findVirtualKeyHitLocked( 4584 int32_t x, int32_t y) { 4585 size_t numVirtualKeys = mLocked.virtualKeys.size(); 4586 for (size_t i = 0; i < numVirtualKeys; i++) { 4587 const VirtualKey& virtualKey = mLocked.virtualKeys[i]; 4588 4589#if DEBUG_VIRTUAL_KEYS 4590 LOGD("VirtualKeys: Hit test (%d, %d): keyCode=%d, scanCode=%d, " 4591 "left=%d, top=%d, right=%d, bottom=%d", 4592 x, y, 4593 virtualKey.keyCode, virtualKey.scanCode, 4594 virtualKey.hitLeft, virtualKey.hitTop, 4595 virtualKey.hitRight, virtualKey.hitBottom); 4596#endif 4597 4598 if (virtualKey.isHit(x, y)) { 4599 return & virtualKey; 4600 } 4601 } 4602 4603 return NULL; 4604} 4605 4606void TouchInputMapper::calculatePointerIds() { 4607 uint32_t currentPointerCount = mCurrentTouch.pointerCount; 4608 uint32_t lastPointerCount = mLastTouch.pointerCount; 4609 4610 if (currentPointerCount == 0) { 4611 // No pointers to assign. 4612 mCurrentTouch.idBits.clear(); 4613 } else if (lastPointerCount == 0) { 4614 // All pointers are new. 4615 mCurrentTouch.idBits.clear(); 4616 for (uint32_t i = 0; i < currentPointerCount; i++) { 4617 mCurrentTouch.pointers[i].id = i; 4618 mCurrentTouch.idToIndex[i] = i; 4619 mCurrentTouch.idBits.markBit(i); 4620 } 4621 } else if (currentPointerCount == 1 && lastPointerCount == 1) { 4622 // Only one pointer and no change in count so it must have the same id as before. 4623 uint32_t id = mLastTouch.pointers[0].id; 4624 mCurrentTouch.pointers[0].id = id; 4625 mCurrentTouch.idToIndex[id] = 0; 4626 mCurrentTouch.idBits.value = BitSet32::valueForBit(id); 4627 } else { 4628 // General case. 4629 // We build a heap of squared euclidean distances between current and last pointers 4630 // associated with the current and last pointer indices. Then, we find the best 4631 // match (by distance) for each current pointer. 4632 PointerDistanceHeapElement heap[MAX_POINTERS * MAX_POINTERS]; 4633 4634 uint32_t heapSize = 0; 4635 for (uint32_t currentPointerIndex = 0; currentPointerIndex < currentPointerCount; 4636 currentPointerIndex++) { 4637 for (uint32_t lastPointerIndex = 0; lastPointerIndex < lastPointerCount; 4638 lastPointerIndex++) { 4639 int64_t deltaX = mCurrentTouch.pointers[currentPointerIndex].x 4640 - mLastTouch.pointers[lastPointerIndex].x; 4641 int64_t deltaY = mCurrentTouch.pointers[currentPointerIndex].y 4642 - mLastTouch.pointers[lastPointerIndex].y; 4643 4644 uint64_t distance = uint64_t(deltaX * deltaX + deltaY * deltaY); 4645 4646 // Insert new element into the heap (sift up). 4647 heap[heapSize].currentPointerIndex = currentPointerIndex; 4648 heap[heapSize].lastPointerIndex = lastPointerIndex; 4649 heap[heapSize].distance = distance; 4650 heapSize += 1; 4651 } 4652 } 4653 4654 // Heapify 4655 for (uint32_t startIndex = heapSize / 2; startIndex != 0; ) { 4656 startIndex -= 1; 4657 for (uint32_t parentIndex = startIndex; ;) { 4658 uint32_t childIndex = parentIndex * 2 + 1; 4659 if (childIndex >= heapSize) { 4660 break; 4661 } 4662 4663 if (childIndex + 1 < heapSize 4664 && heap[childIndex + 1].distance < heap[childIndex].distance) { 4665 childIndex += 1; 4666 } 4667 4668 if (heap[parentIndex].distance <= heap[childIndex].distance) { 4669 break; 4670 } 4671 4672 swap(heap[parentIndex], heap[childIndex]); 4673 parentIndex = childIndex; 4674 } 4675 } 4676 4677#if DEBUG_POINTER_ASSIGNMENT 4678 LOGD("calculatePointerIds - initial distance min-heap: size=%d", heapSize); 4679 for (size_t i = 0; i < heapSize; i++) { 4680 LOGD(" heap[%d]: cur=%d, last=%d, distance=%lld", 4681 i, heap[i].currentPointerIndex, heap[i].lastPointerIndex, 4682 heap[i].distance); 4683 } 4684#endif 4685 4686 // Pull matches out by increasing order of distance. 4687 // To avoid reassigning pointers that have already been matched, the loop keeps track 4688 // of which last and current pointers have been matched using the matchedXXXBits variables. 4689 // It also tracks the used pointer id bits. 4690 BitSet32 matchedLastBits(0); 4691 BitSet32 matchedCurrentBits(0); 4692 BitSet32 usedIdBits(0); 4693 bool first = true; 4694 for (uint32_t i = min(currentPointerCount, lastPointerCount); i > 0; i--) { 4695 for (;;) { 4696 if (first) { 4697 // The first time through the loop, we just consume the root element of 4698 // the heap (the one with smallest distance). 4699 first = false; 4700 } else { 4701 // Previous iterations consumed the root element of the heap. 4702 // Pop root element off of the heap (sift down). 4703 heapSize -= 1; 4704 LOG_ASSERT(heapSize > 0); 4705 4706 // Sift down. 4707 heap[0] = heap[heapSize]; 4708 for (uint32_t parentIndex = 0; ;) { 4709 uint32_t childIndex = parentIndex * 2 + 1; 4710 if (childIndex >= heapSize) { 4711 break; 4712 } 4713 4714 if (childIndex + 1 < heapSize 4715 && heap[childIndex + 1].distance < heap[childIndex].distance) { 4716 childIndex += 1; 4717 } 4718 4719 if (heap[parentIndex].distance <= heap[childIndex].distance) { 4720 break; 4721 } 4722 4723 swap(heap[parentIndex], heap[childIndex]); 4724 parentIndex = childIndex; 4725 } 4726 4727#if DEBUG_POINTER_ASSIGNMENT 4728 LOGD("calculatePointerIds - reduced distance min-heap: size=%d", heapSize); 4729 for (size_t i = 0; i < heapSize; i++) { 4730 LOGD(" heap[%d]: cur=%d, last=%d, distance=%lld", 4731 i, heap[i].currentPointerIndex, heap[i].lastPointerIndex, 4732 heap[i].distance); 4733 } 4734#endif 4735 } 4736 4737 uint32_t currentPointerIndex = heap[0].currentPointerIndex; 4738 if (matchedCurrentBits.hasBit(currentPointerIndex)) continue; // already matched 4739 4740 uint32_t lastPointerIndex = heap[0].lastPointerIndex; 4741 if (matchedLastBits.hasBit(lastPointerIndex)) continue; // already matched 4742 4743 matchedCurrentBits.markBit(currentPointerIndex); 4744 matchedLastBits.markBit(lastPointerIndex); 4745 4746 uint32_t id = mLastTouch.pointers[lastPointerIndex].id; 4747 mCurrentTouch.pointers[currentPointerIndex].id = id; 4748 mCurrentTouch.idToIndex[id] = currentPointerIndex; 4749 usedIdBits.markBit(id); 4750 4751#if DEBUG_POINTER_ASSIGNMENT 4752 LOGD("calculatePointerIds - matched: cur=%d, last=%d, id=%d, distance=%lld", 4753 lastPointerIndex, currentPointerIndex, id, heap[0].distance); 4754#endif 4755 break; 4756 } 4757 } 4758 4759 // Assign fresh ids to new pointers. 4760 if (currentPointerCount > lastPointerCount) { 4761 for (uint32_t i = currentPointerCount - lastPointerCount; ;) { 4762 uint32_t currentPointerIndex = matchedCurrentBits.firstUnmarkedBit(); 4763 uint32_t id = usedIdBits.firstUnmarkedBit(); 4764 4765 mCurrentTouch.pointers[currentPointerIndex].id = id; 4766 mCurrentTouch.idToIndex[id] = currentPointerIndex; 4767 usedIdBits.markBit(id); 4768 4769#if DEBUG_POINTER_ASSIGNMENT 4770 LOGD("calculatePointerIds - assigned: cur=%d, id=%d", 4771 currentPointerIndex, id); 4772#endif 4773 4774 if (--i == 0) break; // done 4775 matchedCurrentBits.markBit(currentPointerIndex); 4776 } 4777 } 4778 4779 // Fix id bits. 4780 mCurrentTouch.idBits = usedIdBits; 4781 } 4782} 4783 4784int32_t TouchInputMapper::getKeyCodeState(uint32_t sourceMask, int32_t keyCode) { 4785 { // acquire lock 4786 AutoMutex _l(mLock); 4787 4788 if (mLocked.currentVirtualKey.down && mLocked.currentVirtualKey.keyCode == keyCode) { 4789 return AKEY_STATE_VIRTUAL; 4790 } 4791 4792 size_t numVirtualKeys = mLocked.virtualKeys.size(); 4793 for (size_t i = 0; i < numVirtualKeys; i++) { 4794 const VirtualKey& virtualKey = mLocked.virtualKeys[i]; 4795 if (virtualKey.keyCode == keyCode) { 4796 return AKEY_STATE_UP; 4797 } 4798 } 4799 } // release lock 4800 4801 return AKEY_STATE_UNKNOWN; 4802} 4803 4804int32_t TouchInputMapper::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { 4805 { // acquire lock 4806 AutoMutex _l(mLock); 4807 4808 if (mLocked.currentVirtualKey.down && mLocked.currentVirtualKey.scanCode == scanCode) { 4809 return AKEY_STATE_VIRTUAL; 4810 } 4811 4812 size_t numVirtualKeys = mLocked.virtualKeys.size(); 4813 for (size_t i = 0; i < numVirtualKeys; i++) { 4814 const VirtualKey& virtualKey = mLocked.virtualKeys[i]; 4815 if (virtualKey.scanCode == scanCode) { 4816 return AKEY_STATE_UP; 4817 } 4818 } 4819 } // release lock 4820 4821 return AKEY_STATE_UNKNOWN; 4822} 4823 4824bool TouchInputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 4825 const int32_t* keyCodes, uint8_t* outFlags) { 4826 { // acquire lock 4827 AutoMutex _l(mLock); 4828 4829 size_t numVirtualKeys = mLocked.virtualKeys.size(); 4830 for (size_t i = 0; i < numVirtualKeys; i++) { 4831 const VirtualKey& virtualKey = mLocked.virtualKeys[i]; 4832 4833 for (size_t i = 0; i < numCodes; i++) { 4834 if (virtualKey.keyCode == keyCodes[i]) { 4835 outFlags[i] = 1; 4836 } 4837 } 4838 } 4839 } // release lock 4840 4841 return true; 4842} 4843 4844 4845// --- SingleTouchInputMapper --- 4846 4847SingleTouchInputMapper::SingleTouchInputMapper(InputDevice* device) : 4848 TouchInputMapper(device) { 4849 clearState(); 4850} 4851 4852SingleTouchInputMapper::~SingleTouchInputMapper() { 4853} 4854 4855void SingleTouchInputMapper::clearState() { 4856 mAccumulator.clear(); 4857 4858 mDown = false; 4859 mX = 0; 4860 mY = 0; 4861 mPressure = 0; // default to 0 for devices that don't report pressure 4862 mToolWidth = 0; // default to 0 for devices that don't report tool width 4863 mButtonState = 0; 4864} 4865 4866void SingleTouchInputMapper::reset() { 4867 TouchInputMapper::reset(); 4868 4869 clearState(); 4870 } 4871 4872void SingleTouchInputMapper::process(const RawEvent* rawEvent) { 4873 switch (rawEvent->type) { 4874 case EV_KEY: 4875 switch (rawEvent->scanCode) { 4876 case BTN_TOUCH: 4877 mAccumulator.fields |= Accumulator::FIELD_BTN_TOUCH; 4878 mAccumulator.btnTouch = rawEvent->value != 0; 4879 // Don't sync immediately. Wait until the next SYN_REPORT since we might 4880 // not have received valid position information yet. This logic assumes that 4881 // BTN_TOUCH is always followed by SYN_REPORT as part of a complete packet. 4882 break; 4883 default: 4884 if (mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER) { 4885 int32_t buttonState = getButtonStateForScanCode(rawEvent->scanCode); 4886 if (buttonState) { 4887 if (rawEvent->value) { 4888 mAccumulator.buttonDown |= buttonState; 4889 } else { 4890 mAccumulator.buttonUp |= buttonState; 4891 } 4892 mAccumulator.fields |= Accumulator::FIELD_BUTTONS; 4893 } 4894 } 4895 break; 4896 } 4897 break; 4898 4899 case EV_ABS: 4900 switch (rawEvent->scanCode) { 4901 case ABS_X: 4902 mAccumulator.fields |= Accumulator::FIELD_ABS_X; 4903 mAccumulator.absX = rawEvent->value; 4904 break; 4905 case ABS_Y: 4906 mAccumulator.fields |= Accumulator::FIELD_ABS_Y; 4907 mAccumulator.absY = rawEvent->value; 4908 break; 4909 case ABS_PRESSURE: 4910 mAccumulator.fields |= Accumulator::FIELD_ABS_PRESSURE; 4911 mAccumulator.absPressure = rawEvent->value; 4912 break; 4913 case ABS_TOOL_WIDTH: 4914 mAccumulator.fields |= Accumulator::FIELD_ABS_TOOL_WIDTH; 4915 mAccumulator.absToolWidth = rawEvent->value; 4916 break; 4917 } 4918 break; 4919 4920 case EV_SYN: 4921 switch (rawEvent->scanCode) { 4922 case SYN_REPORT: 4923 sync(rawEvent->when); 4924 break; 4925 } 4926 break; 4927 } 4928} 4929 4930void SingleTouchInputMapper::sync(nsecs_t when) { 4931 uint32_t fields = mAccumulator.fields; 4932 if (fields == 0) { 4933 return; // no new state changes, so nothing to do 4934 } 4935 4936 if (fields & Accumulator::FIELD_BTN_TOUCH) { 4937 mDown = mAccumulator.btnTouch; 4938 } 4939 4940 if (fields & Accumulator::FIELD_ABS_X) { 4941 mX = mAccumulator.absX; 4942 } 4943 4944 if (fields & Accumulator::FIELD_ABS_Y) { 4945 mY = mAccumulator.absY; 4946 } 4947 4948 if (fields & Accumulator::FIELD_ABS_PRESSURE) { 4949 mPressure = mAccumulator.absPressure; 4950 } 4951 4952 if (fields & Accumulator::FIELD_ABS_TOOL_WIDTH) { 4953 mToolWidth = mAccumulator.absToolWidth; 4954 } 4955 4956 if (fields & Accumulator::FIELD_BUTTONS) { 4957 mButtonState = (mButtonState | mAccumulator.buttonDown) & ~mAccumulator.buttonUp; 4958 } 4959 4960 mCurrentTouch.clear(); 4961 4962 if (mDown) { 4963 mCurrentTouch.pointerCount = 1; 4964 mCurrentTouch.pointers[0].id = 0; 4965 mCurrentTouch.pointers[0].x = mX; 4966 mCurrentTouch.pointers[0].y = mY; 4967 mCurrentTouch.pointers[0].pressure = mPressure; 4968 mCurrentTouch.pointers[0].touchMajor = 0; 4969 mCurrentTouch.pointers[0].touchMinor = 0; 4970 mCurrentTouch.pointers[0].toolMajor = mToolWidth; 4971 mCurrentTouch.pointers[0].toolMinor = mToolWidth; 4972 mCurrentTouch.pointers[0].orientation = 0; 4973 mCurrentTouch.pointers[0].distance = 0; 4974 mCurrentTouch.pointers[0].isStylus = false; // TODO: Set stylus 4975 mCurrentTouch.idToIndex[0] = 0; 4976 mCurrentTouch.idBits.markBit(0); 4977 mCurrentTouch.buttonState = mButtonState; 4978 } 4979 4980 syncTouch(when, true); 4981 4982 mAccumulator.clear(); 4983} 4984 4985void SingleTouchInputMapper::configureRawAxes() { 4986 TouchInputMapper::configureRawAxes(); 4987 4988 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_X, & mRawAxes.x); 4989 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_Y, & mRawAxes.y); 4990 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_PRESSURE, & mRawAxes.pressure); 4991 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_TOOL_WIDTH, & mRawAxes.toolMajor); 4992} 4993 4994 4995// --- MultiTouchInputMapper --- 4996 4997MultiTouchInputMapper::MultiTouchInputMapper(InputDevice* device) : 4998 TouchInputMapper(device), mSlotCount(0), mUsingSlotsProtocol(false) { 4999} 5000 5001MultiTouchInputMapper::~MultiTouchInputMapper() { 5002} 5003 5004void MultiTouchInputMapper::clearState() { 5005 mAccumulator.clearSlots(mSlotCount); 5006 mAccumulator.clearButtons(); 5007 mButtonState = 0; 5008 mPointerIdBits.clear(); 5009 5010 if (mUsingSlotsProtocol) { 5011 // Query the driver for the current slot index and use it as the initial slot 5012 // before we start reading events from the device. It is possible that the 5013 // current slot index will not be the same as it was when the first event was 5014 // written into the evdev buffer, which means the input mapper could start 5015 // out of sync with the initial state of the events in the evdev buffer. 5016 // In the extremely unlikely case that this happens, the data from 5017 // two slots will be confused until the next ABS_MT_SLOT event is received. 5018 // This can cause the touch point to "jump", but at least there will be 5019 // no stuck touches. 5020 status_t status = getEventHub()->getAbsoluteAxisValue(getDeviceId(), ABS_MT_SLOT, 5021 &mAccumulator.currentSlot); 5022 if (status) { 5023 LOGW("Could not retrieve current multitouch slot index. status=%d", status); 5024 mAccumulator.currentSlot = -1; 5025 } 5026 } 5027} 5028 5029void MultiTouchInputMapper::reset() { 5030 TouchInputMapper::reset(); 5031 5032 clearState(); 5033} 5034 5035void MultiTouchInputMapper::process(const RawEvent* rawEvent) { 5036 switch (rawEvent->type) { 5037 case EV_KEY: { 5038 if (mParameters.deviceType == Parameters::DEVICE_TYPE_POINTER) { 5039 int32_t buttonState = getButtonStateForScanCode(rawEvent->scanCode); 5040 if (buttonState) { 5041 if (rawEvent->value) { 5042 mAccumulator.buttonDown |= buttonState; 5043 } else { 5044 mAccumulator.buttonUp |= buttonState; 5045 } 5046 } 5047 } 5048 break; 5049 } 5050 5051 case EV_ABS: { 5052 bool newSlot = false; 5053 if (mUsingSlotsProtocol && rawEvent->scanCode == ABS_MT_SLOT) { 5054 mAccumulator.currentSlot = rawEvent->value; 5055 newSlot = true; 5056 } 5057 5058 if (mAccumulator.currentSlot < 0 || size_t(mAccumulator.currentSlot) >= mSlotCount) { 5059#if DEBUG_POINTERS 5060 if (newSlot) { 5061 LOGW("MultiTouch device %s emitted invalid slot index %d but it " 5062 "should be between 0 and %d; ignoring this slot.", 5063 getDeviceName().string(), mAccumulator.currentSlot, mSlotCount); 5064 } 5065#endif 5066 break; 5067 } 5068 5069 Accumulator::Slot* slot = &mAccumulator.slots[mAccumulator.currentSlot]; 5070 5071 switch (rawEvent->scanCode) { 5072 case ABS_MT_POSITION_X: 5073 slot->fields |= Accumulator::FIELD_ABS_MT_POSITION_X; 5074 slot->absMTPositionX = rawEvent->value; 5075 break; 5076 case ABS_MT_POSITION_Y: 5077 slot->fields |= Accumulator::FIELD_ABS_MT_POSITION_Y; 5078 slot->absMTPositionY = rawEvent->value; 5079 break; 5080 case ABS_MT_TOUCH_MAJOR: 5081 slot->fields |= Accumulator::FIELD_ABS_MT_TOUCH_MAJOR; 5082 slot->absMTTouchMajor = rawEvent->value; 5083 break; 5084 case ABS_MT_TOUCH_MINOR: 5085 slot->fields |= Accumulator::FIELD_ABS_MT_TOUCH_MINOR; 5086 slot->absMTTouchMinor = rawEvent->value; 5087 break; 5088 case ABS_MT_WIDTH_MAJOR: 5089 slot->fields |= Accumulator::FIELD_ABS_MT_WIDTH_MAJOR; 5090 slot->absMTWidthMajor = rawEvent->value; 5091 break; 5092 case ABS_MT_WIDTH_MINOR: 5093 slot->fields |= Accumulator::FIELD_ABS_MT_WIDTH_MINOR; 5094 slot->absMTWidthMinor = rawEvent->value; 5095 break; 5096 case ABS_MT_ORIENTATION: 5097 slot->fields |= Accumulator::FIELD_ABS_MT_ORIENTATION; 5098 slot->absMTOrientation = rawEvent->value; 5099 break; 5100 case ABS_MT_TRACKING_ID: 5101 if (mUsingSlotsProtocol && rawEvent->value < 0) { 5102 slot->clear(); 5103 } else { 5104 slot->fields |= Accumulator::FIELD_ABS_MT_TRACKING_ID; 5105 slot->absMTTrackingId = rawEvent->value; 5106 } 5107 break; 5108 case ABS_MT_PRESSURE: 5109 slot->fields |= Accumulator::FIELD_ABS_MT_PRESSURE; 5110 slot->absMTPressure = rawEvent->value; 5111 break; 5112 case ABS_MT_TOOL_TYPE: 5113 slot->fields |= Accumulator::FIELD_ABS_MT_TOOL_TYPE; 5114 slot->absMTToolType = rawEvent->value; 5115 break; 5116 } 5117 break; 5118 } 5119 5120 case EV_SYN: 5121 switch (rawEvent->scanCode) { 5122 case SYN_MT_REPORT: { 5123 // MultiTouch Sync: The driver has returned all data for *one* of the pointers. 5124 mAccumulator.currentSlot += 1; 5125 break; 5126 } 5127 5128 case SYN_REPORT: 5129 sync(rawEvent->when); 5130 break; 5131 } 5132 break; 5133 } 5134} 5135 5136void MultiTouchInputMapper::sync(nsecs_t when) { 5137 static const uint32_t REQUIRED_FIELDS = 5138 Accumulator::FIELD_ABS_MT_POSITION_X | Accumulator::FIELD_ABS_MT_POSITION_Y; 5139 5140 size_t inCount = mSlotCount; 5141 size_t outCount = 0; 5142 bool havePointerIds = true; 5143 5144 mCurrentTouch.clear(); 5145 5146 for (size_t inIndex = 0; inIndex < inCount; inIndex++) { 5147 const Accumulator::Slot& inSlot = mAccumulator.slots[inIndex]; 5148 uint32_t fields = inSlot.fields; 5149 5150 if ((fields & REQUIRED_FIELDS) != REQUIRED_FIELDS) { 5151 // Some drivers send empty MT sync packets without X / Y to indicate a pointer up. 5152 // This may also indicate an unused slot. 5153 // Drop this finger. 5154 continue; 5155 } 5156 5157 if (outCount >= MAX_POINTERS) { 5158#if DEBUG_POINTERS 5159 LOGD("MultiTouch device %s emitted more than maximum of %d pointers; " 5160 "ignoring the rest.", 5161 getDeviceName().string(), MAX_POINTERS); 5162#endif 5163 break; // too many fingers! 5164 } 5165 5166 PointerData& outPointer = mCurrentTouch.pointers[outCount]; 5167 outPointer.x = inSlot.absMTPositionX; 5168 outPointer.y = inSlot.absMTPositionY; 5169 5170 if (fields & Accumulator::FIELD_ABS_MT_PRESSURE) { 5171 outPointer.pressure = inSlot.absMTPressure; 5172 } else { 5173 // Default pressure to 0 if absent. 5174 outPointer.pressure = 0; 5175 } 5176 5177 if (fields & Accumulator::FIELD_ABS_MT_TOUCH_MAJOR) { 5178 if (inSlot.absMTTouchMajor <= 0) { 5179 // Some devices send sync packets with X / Y but with a 0 touch major to indicate 5180 // a pointer going up. Drop this finger. 5181 continue; 5182 } 5183 outPointer.touchMajor = inSlot.absMTTouchMajor; 5184 } else { 5185 // Default touch area to 0 if absent. 5186 outPointer.touchMajor = 0; 5187 } 5188 5189 if (fields & Accumulator::FIELD_ABS_MT_TOUCH_MINOR) { 5190 outPointer.touchMinor = inSlot.absMTTouchMinor; 5191 } else { 5192 // Assume touch area is circular. 5193 outPointer.touchMinor = outPointer.touchMajor; 5194 } 5195 5196 if (fields & Accumulator::FIELD_ABS_MT_WIDTH_MAJOR) { 5197 outPointer.toolMajor = inSlot.absMTWidthMajor; 5198 } else { 5199 // Default tool area to 0 if absent. 5200 outPointer.toolMajor = 0; 5201 } 5202 5203 if (fields & Accumulator::FIELD_ABS_MT_WIDTH_MINOR) { 5204 outPointer.toolMinor = inSlot.absMTWidthMinor; 5205 } else { 5206 // Assume tool area is circular. 5207 outPointer.toolMinor = outPointer.toolMajor; 5208 } 5209 5210 if (fields & Accumulator::FIELD_ABS_MT_ORIENTATION) { 5211 outPointer.orientation = inSlot.absMTOrientation; 5212 } else { 5213 // Default orientation to vertical if absent. 5214 outPointer.orientation = 0; 5215 } 5216 5217 if (fields & Accumulator::FIELD_ABS_MT_DISTANCE) { 5218 outPointer.distance = inSlot.absMTDistance; 5219 } else { 5220 // Default distance is 0 (direct contact). 5221 outPointer.distance = 0; 5222 } 5223 5224 if (fields & Accumulator::FIELD_ABS_MT_TOOL_TYPE) { 5225 outPointer.isStylus = (inSlot.absMTToolType == MT_TOOL_PEN); 5226 } else { 5227 // Assume this is not a stylus. 5228 outPointer.isStylus = false; 5229 } 5230 5231 // Assign pointer id using tracking id if available. 5232 if (havePointerIds) { 5233 int32_t id = -1; 5234 if (fields & Accumulator::FIELD_ABS_MT_TRACKING_ID) { 5235 int32_t trackingId = inSlot.absMTTrackingId; 5236 5237 for (BitSet32 idBits(mPointerIdBits); !idBits.isEmpty(); ) { 5238 uint32_t n = idBits.firstMarkedBit(); 5239 idBits.clearBit(n); 5240 5241 if (mPointerTrackingIdMap[n] == trackingId) { 5242 id = n; 5243 } 5244 } 5245 5246 if (id < 0 && !mPointerIdBits.isFull()) { 5247 id = mPointerIdBits.firstUnmarkedBit(); 5248 mPointerIdBits.markBit(id); 5249 mPointerTrackingIdMap[id] = trackingId; 5250 } 5251 } 5252 if (id < 0) { 5253 havePointerIds = false; 5254 mCurrentTouch.idBits.clear(); 5255 } else { 5256 outPointer.id = id; 5257 mCurrentTouch.idToIndex[id] = outCount; 5258 mCurrentTouch.idBits.markBit(id); 5259 } 5260 } 5261 5262 outCount += 1; 5263 } 5264 5265 mCurrentTouch.pointerCount = outCount; 5266 5267 mButtonState = (mButtonState | mAccumulator.buttonDown) & ~mAccumulator.buttonUp; 5268 mCurrentTouch.buttonState = mButtonState; 5269 5270 mPointerIdBits = mCurrentTouch.idBits; 5271 5272 syncTouch(when, havePointerIds); 5273 5274 if (!mUsingSlotsProtocol) { 5275 mAccumulator.clearSlots(mSlotCount); 5276 } 5277 mAccumulator.clearButtons(); 5278} 5279 5280void MultiTouchInputMapper::configureRawAxes() { 5281 TouchInputMapper::configureRawAxes(); 5282 5283 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_X, &mRawAxes.x); 5284 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_POSITION_Y, &mRawAxes.y); 5285 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MAJOR, &mRawAxes.touchMajor); 5286 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TOUCH_MINOR, &mRawAxes.touchMinor); 5287 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MAJOR, &mRawAxes.toolMajor); 5288 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_WIDTH_MINOR, &mRawAxes.toolMinor); 5289 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_ORIENTATION, &mRawAxes.orientation); 5290 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_PRESSURE, &mRawAxes.pressure); 5291 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_DISTANCE, &mRawAxes.distance); 5292 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_TRACKING_ID, &mRawAxes.trackingId); 5293 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), ABS_MT_SLOT, &mRawAxes.slot); 5294 5295 if (mRawAxes.trackingId.valid 5296 && mRawAxes.slot.valid && mRawAxes.slot.minValue == 0 && mRawAxes.slot.maxValue > 0) { 5297 mSlotCount = mRawAxes.slot.maxValue + 1; 5298 if (mSlotCount > MAX_SLOTS) { 5299 LOGW("MultiTouch Device %s reported %d slots but the framework " 5300 "only supports a maximum of %d slots at this time.", 5301 getDeviceName().string(), mSlotCount, MAX_SLOTS); 5302 mSlotCount = MAX_SLOTS; 5303 } 5304 mUsingSlotsProtocol = true; 5305 } else { 5306 mSlotCount = MAX_POINTERS; 5307 mUsingSlotsProtocol = false; 5308 } 5309 5310 mAccumulator.allocateSlots(mSlotCount); 5311 5312 clearState(); 5313} 5314 5315 5316// --- JoystickInputMapper --- 5317 5318JoystickInputMapper::JoystickInputMapper(InputDevice* device) : 5319 InputMapper(device) { 5320} 5321 5322JoystickInputMapper::~JoystickInputMapper() { 5323} 5324 5325uint32_t JoystickInputMapper::getSources() { 5326 return AINPUT_SOURCE_JOYSTICK; 5327} 5328 5329void JoystickInputMapper::populateDeviceInfo(InputDeviceInfo* info) { 5330 InputMapper::populateDeviceInfo(info); 5331 5332 for (size_t i = 0; i < mAxes.size(); i++) { 5333 const Axis& axis = mAxes.valueAt(i); 5334 info->addMotionRange(axis.axisInfo.axis, AINPUT_SOURCE_JOYSTICK, 5335 axis.min, axis.max, axis.flat, axis.fuzz); 5336 if (axis.axisInfo.mode == AxisInfo::MODE_SPLIT) { 5337 info->addMotionRange(axis.axisInfo.highAxis, AINPUT_SOURCE_JOYSTICK, 5338 axis.min, axis.max, axis.flat, axis.fuzz); 5339 } 5340 } 5341} 5342 5343void JoystickInputMapper::dump(String8& dump) { 5344 dump.append(INDENT2 "Joystick Input Mapper:\n"); 5345 5346 dump.append(INDENT3 "Axes:\n"); 5347 size_t numAxes = mAxes.size(); 5348 for (size_t i = 0; i < numAxes; i++) { 5349 const Axis& axis = mAxes.valueAt(i); 5350 const char* label = getAxisLabel(axis.axisInfo.axis); 5351 if (label) { 5352 dump.appendFormat(INDENT4 "%s", label); 5353 } else { 5354 dump.appendFormat(INDENT4 "%d", axis.axisInfo.axis); 5355 } 5356 if (axis.axisInfo.mode == AxisInfo::MODE_SPLIT) { 5357 label = getAxisLabel(axis.axisInfo.highAxis); 5358 if (label) { 5359 dump.appendFormat(" / %s (split at %d)", label, axis.axisInfo.splitValue); 5360 } else { 5361 dump.appendFormat(" / %d (split at %d)", axis.axisInfo.highAxis, 5362 axis.axisInfo.splitValue); 5363 } 5364 } else if (axis.axisInfo.mode == AxisInfo::MODE_INVERT) { 5365 dump.append(" (invert)"); 5366 } 5367 5368 dump.appendFormat(": min=%0.5f, max=%0.5f, flat=%0.5f, fuzz=%0.5f\n", 5369 axis.min, axis.max, axis.flat, axis.fuzz); 5370 dump.appendFormat(INDENT4 " scale=%0.5f, offset=%0.5f, " 5371 "highScale=%0.5f, highOffset=%0.5f\n", 5372 axis.scale, axis.offset, axis.highScale, axis.highOffset); 5373 dump.appendFormat(INDENT4 " rawAxis=%d, rawMin=%d, rawMax=%d, " 5374 "rawFlat=%d, rawFuzz=%d, rawResolution=%d\n", 5375 mAxes.keyAt(i), axis.rawAxisInfo.minValue, axis.rawAxisInfo.maxValue, 5376 axis.rawAxisInfo.flat, axis.rawAxisInfo.fuzz, axis.rawAxisInfo.resolution); 5377 } 5378} 5379 5380void JoystickInputMapper::configure(const InputReaderConfiguration* config, uint32_t changes) { 5381 InputMapper::configure(config, changes); 5382 5383 if (!changes) { // first time only 5384 // Collect all axes. 5385 for (int32_t abs = 0; abs <= ABS_MAX; abs++) { 5386 RawAbsoluteAxisInfo rawAxisInfo; 5387 getEventHub()->getAbsoluteAxisInfo(getDeviceId(), abs, &rawAxisInfo); 5388 if (rawAxisInfo.valid) { 5389 // Map axis. 5390 AxisInfo axisInfo; 5391 bool explicitlyMapped = !getEventHub()->mapAxis(getDeviceId(), abs, &axisInfo); 5392 if (!explicitlyMapped) { 5393 // Axis is not explicitly mapped, will choose a generic axis later. 5394 axisInfo.mode = AxisInfo::MODE_NORMAL; 5395 axisInfo.axis = -1; 5396 } 5397 5398 // Apply flat override. 5399 int32_t rawFlat = axisInfo.flatOverride < 0 5400 ? rawAxisInfo.flat : axisInfo.flatOverride; 5401 5402 // Calculate scaling factors and limits. 5403 Axis axis; 5404 if (axisInfo.mode == AxisInfo::MODE_SPLIT) { 5405 float scale = 1.0f / (axisInfo.splitValue - rawAxisInfo.minValue); 5406 float highScale = 1.0f / (rawAxisInfo.maxValue - axisInfo.splitValue); 5407 axis.initialize(rawAxisInfo, axisInfo, explicitlyMapped, 5408 scale, 0.0f, highScale, 0.0f, 5409 0.0f, 1.0f, rawFlat * scale, rawAxisInfo.fuzz * scale); 5410 } else if (isCenteredAxis(axisInfo.axis)) { 5411 float scale = 2.0f / (rawAxisInfo.maxValue - rawAxisInfo.minValue); 5412 float offset = avg(rawAxisInfo.minValue, rawAxisInfo.maxValue) * -scale; 5413 axis.initialize(rawAxisInfo, axisInfo, explicitlyMapped, 5414 scale, offset, scale, offset, 5415 -1.0f, 1.0f, rawFlat * scale, rawAxisInfo.fuzz * scale); 5416 } else { 5417 float scale = 1.0f / (rawAxisInfo.maxValue - rawAxisInfo.minValue); 5418 axis.initialize(rawAxisInfo, axisInfo, explicitlyMapped, 5419 scale, 0.0f, scale, 0.0f, 5420 0.0f, 1.0f, rawFlat * scale, rawAxisInfo.fuzz * scale); 5421 } 5422 5423 // To eliminate noise while the joystick is at rest, filter out small variations 5424 // in axis values up front. 5425 axis.filter = axis.flat * 0.25f; 5426 5427 mAxes.add(abs, axis); 5428 } 5429 } 5430 5431 // If there are too many axes, start dropping them. 5432 // Prefer to keep explicitly mapped axes. 5433 if (mAxes.size() > PointerCoords::MAX_AXES) { 5434 LOGI("Joystick '%s' has %d axes but the framework only supports a maximum of %d.", 5435 getDeviceName().string(), mAxes.size(), PointerCoords::MAX_AXES); 5436 pruneAxes(true); 5437 pruneAxes(false); 5438 } 5439 5440 // Assign generic axis ids to remaining axes. 5441 int32_t nextGenericAxisId = AMOTION_EVENT_AXIS_GENERIC_1; 5442 size_t numAxes = mAxes.size(); 5443 for (size_t i = 0; i < numAxes; i++) { 5444 Axis& axis = mAxes.editValueAt(i); 5445 if (axis.axisInfo.axis < 0) { 5446 while (nextGenericAxisId <= AMOTION_EVENT_AXIS_GENERIC_16 5447 && haveAxis(nextGenericAxisId)) { 5448 nextGenericAxisId += 1; 5449 } 5450 5451 if (nextGenericAxisId <= AMOTION_EVENT_AXIS_GENERIC_16) { 5452 axis.axisInfo.axis = nextGenericAxisId; 5453 nextGenericAxisId += 1; 5454 } else { 5455 LOGI("Ignoring joystick '%s' axis %d because all of the generic axis ids " 5456 "have already been assigned to other axes.", 5457 getDeviceName().string(), mAxes.keyAt(i)); 5458 mAxes.removeItemsAt(i--); 5459 numAxes -= 1; 5460 } 5461 } 5462 } 5463 } 5464} 5465 5466bool JoystickInputMapper::haveAxis(int32_t axisId) { 5467 size_t numAxes = mAxes.size(); 5468 for (size_t i = 0; i < numAxes; i++) { 5469 const Axis& axis = mAxes.valueAt(i); 5470 if (axis.axisInfo.axis == axisId 5471 || (axis.axisInfo.mode == AxisInfo::MODE_SPLIT 5472 && axis.axisInfo.highAxis == axisId)) { 5473 return true; 5474 } 5475 } 5476 return false; 5477} 5478 5479void JoystickInputMapper::pruneAxes(bool ignoreExplicitlyMappedAxes) { 5480 size_t i = mAxes.size(); 5481 while (mAxes.size() > PointerCoords::MAX_AXES && i-- > 0) { 5482 if (ignoreExplicitlyMappedAxes && mAxes.valueAt(i).explicitlyMapped) { 5483 continue; 5484 } 5485 LOGI("Discarding joystick '%s' axis %d because there are too many axes.", 5486 getDeviceName().string(), mAxes.keyAt(i)); 5487 mAxes.removeItemsAt(i); 5488 } 5489} 5490 5491bool JoystickInputMapper::isCenteredAxis(int32_t axis) { 5492 switch (axis) { 5493 case AMOTION_EVENT_AXIS_X: 5494 case AMOTION_EVENT_AXIS_Y: 5495 case AMOTION_EVENT_AXIS_Z: 5496 case AMOTION_EVENT_AXIS_RX: 5497 case AMOTION_EVENT_AXIS_RY: 5498 case AMOTION_EVENT_AXIS_RZ: 5499 case AMOTION_EVENT_AXIS_HAT_X: 5500 case AMOTION_EVENT_AXIS_HAT_Y: 5501 case AMOTION_EVENT_AXIS_ORIENTATION: 5502 case AMOTION_EVENT_AXIS_RUDDER: 5503 case AMOTION_EVENT_AXIS_WHEEL: 5504 return true; 5505 default: 5506 return false; 5507 } 5508} 5509 5510void JoystickInputMapper::reset() { 5511 // Recenter all axes. 5512 nsecs_t when = systemTime(SYSTEM_TIME_MONOTONIC); 5513 5514 size_t numAxes = mAxes.size(); 5515 for (size_t i = 0; i < numAxes; i++) { 5516 Axis& axis = mAxes.editValueAt(i); 5517 axis.resetValue(); 5518 } 5519 5520 sync(when, true /*force*/); 5521 5522 InputMapper::reset(); 5523} 5524 5525void JoystickInputMapper::process(const RawEvent* rawEvent) { 5526 switch (rawEvent->type) { 5527 case EV_ABS: { 5528 ssize_t index = mAxes.indexOfKey(rawEvent->scanCode); 5529 if (index >= 0) { 5530 Axis& axis = mAxes.editValueAt(index); 5531 float newValue, highNewValue; 5532 switch (axis.axisInfo.mode) { 5533 case AxisInfo::MODE_INVERT: 5534 newValue = (axis.rawAxisInfo.maxValue - rawEvent->value) 5535 * axis.scale + axis.offset; 5536 highNewValue = 0.0f; 5537 break; 5538 case AxisInfo::MODE_SPLIT: 5539 if (rawEvent->value < axis.axisInfo.splitValue) { 5540 newValue = (axis.axisInfo.splitValue - rawEvent->value) 5541 * axis.scale + axis.offset; 5542 highNewValue = 0.0f; 5543 } else if (rawEvent->value > axis.axisInfo.splitValue) { 5544 newValue = 0.0f; 5545 highNewValue = (rawEvent->value - axis.axisInfo.splitValue) 5546 * axis.highScale + axis.highOffset; 5547 } else { 5548 newValue = 0.0f; 5549 highNewValue = 0.0f; 5550 } 5551 break; 5552 default: 5553 newValue = rawEvent->value * axis.scale + axis.offset; 5554 highNewValue = 0.0f; 5555 break; 5556 } 5557 axis.newValue = newValue; 5558 axis.highNewValue = highNewValue; 5559 } 5560 break; 5561 } 5562 5563 case EV_SYN: 5564 switch (rawEvent->scanCode) { 5565 case SYN_REPORT: 5566 sync(rawEvent->when, false /*force*/); 5567 break; 5568 } 5569 break; 5570 } 5571} 5572 5573void JoystickInputMapper::sync(nsecs_t when, bool force) { 5574 if (!filterAxes(force)) { 5575 return; 5576 } 5577 5578 int32_t metaState = mContext->getGlobalMetaState(); 5579 int32_t buttonState = 0; 5580 5581 PointerProperties pointerProperties; 5582 pointerProperties.clear(); 5583 pointerProperties.id = 0; 5584 pointerProperties.toolType = AMOTION_EVENT_TOOL_TYPE_UNKNOWN; 5585 5586 PointerCoords pointerCoords; 5587 pointerCoords.clear(); 5588 5589 size_t numAxes = mAxes.size(); 5590 for (size_t i = 0; i < numAxes; i++) { 5591 const Axis& axis = mAxes.valueAt(i); 5592 pointerCoords.setAxisValue(axis.axisInfo.axis, axis.currentValue); 5593 if (axis.axisInfo.mode == AxisInfo::MODE_SPLIT) { 5594 pointerCoords.setAxisValue(axis.axisInfo.highAxis, axis.highCurrentValue); 5595 } 5596 } 5597 5598 // Moving a joystick axis should not wake the devide because joysticks can 5599 // be fairly noisy even when not in use. On the other hand, pushing a gamepad 5600 // button will likely wake the device. 5601 // TODO: Use the input device configuration to control this behavior more finely. 5602 uint32_t policyFlags = 0; 5603 5604 getDispatcher()->notifyMotion(when, getDeviceId(), AINPUT_SOURCE_JOYSTICK, policyFlags, 5605 AMOTION_EVENT_ACTION_MOVE, 0, metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE, 5606 1, &pointerProperties, &pointerCoords, 0, 0, 0); 5607} 5608 5609bool JoystickInputMapper::filterAxes(bool force) { 5610 bool atLeastOneSignificantChange = force; 5611 size_t numAxes = mAxes.size(); 5612 for (size_t i = 0; i < numAxes; i++) { 5613 Axis& axis = mAxes.editValueAt(i); 5614 if (force || hasValueChangedSignificantly(axis.filter, 5615 axis.newValue, axis.currentValue, axis.min, axis.max)) { 5616 axis.currentValue = axis.newValue; 5617 atLeastOneSignificantChange = true; 5618 } 5619 if (axis.axisInfo.mode == AxisInfo::MODE_SPLIT) { 5620 if (force || hasValueChangedSignificantly(axis.filter, 5621 axis.highNewValue, axis.highCurrentValue, axis.min, axis.max)) { 5622 axis.highCurrentValue = axis.highNewValue; 5623 atLeastOneSignificantChange = true; 5624 } 5625 } 5626 } 5627 return atLeastOneSignificantChange; 5628} 5629 5630bool JoystickInputMapper::hasValueChangedSignificantly( 5631 float filter, float newValue, float currentValue, float min, float max) { 5632 if (newValue != currentValue) { 5633 // Filter out small changes in value unless the value is converging on the axis 5634 // bounds or center point. This is intended to reduce the amount of information 5635 // sent to applications by particularly noisy joysticks (such as PS3). 5636 if (fabs(newValue - currentValue) > filter 5637 || hasMovedNearerToValueWithinFilteredRange(filter, newValue, currentValue, min) 5638 || hasMovedNearerToValueWithinFilteredRange(filter, newValue, currentValue, max) 5639 || hasMovedNearerToValueWithinFilteredRange(filter, newValue, currentValue, 0)) { 5640 return true; 5641 } 5642 } 5643 return false; 5644} 5645 5646bool JoystickInputMapper::hasMovedNearerToValueWithinFilteredRange( 5647 float filter, float newValue, float currentValue, float thresholdValue) { 5648 float newDistance = fabs(newValue - thresholdValue); 5649 if (newDistance < filter) { 5650 float oldDistance = fabs(currentValue - thresholdValue); 5651 if (newDistance < oldDistance) { 5652 return true; 5653 } 5654 } 5655 return false; 5656} 5657 5658} // namespace android 5659