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 #ifndef _UI_INPUT_READER_H 18 #define _UI_INPUT_READER_H 19 20 #include "EventHub.h" 21 #include "PointerController.h" 22 #include "InputListener.h" 23 24 #include <androidfw/Input.h> 25 #include <androidfw/VelocityControl.h> 26 #include <androidfw/VelocityTracker.h> 27 #include <utils/KeyedVector.h> 28 #include <utils/threads.h> 29 #include <utils/Timers.h> 30 #include <utils/RefBase.h> 31 #include <utils/String8.h> 32 #include <utils/BitSet.h> 33 34 #include <stddef.h> 35 #include <unistd.h> 36 37 // Maximum supported size of a vibration pattern. 38 // Must be at least 2. 39 #define MAX_VIBRATE_PATTERN_SIZE 100 40 41 // Maximum allowable delay value in a vibration pattern before 42 // which the delay will be truncated. 43 #define MAX_VIBRATE_PATTERN_DELAY_NSECS (1000000 * 1000000000LL) 44 45 namespace android { 46 47 class InputDevice; 48 class InputMapper; 49 50 /* 51 * Describes how coordinates are mapped on a physical display. 52 * See com.android.server.display.DisplayViewport. 53 */ 54 struct DisplayViewport { 55 int32_t displayId; // -1 if invalid 56 int32_t orientation; 57 int32_t logicalLeft; 58 int32_t logicalTop; 59 int32_t logicalRight; 60 int32_t logicalBottom; 61 int32_t physicalLeft; 62 int32_t physicalTop; 63 int32_t physicalRight; 64 int32_t physicalBottom; 65 int32_t deviceWidth; 66 int32_t deviceHeight; 67 68 DisplayViewport() : 69 displayId(ADISPLAY_ID_NONE), orientation(DISPLAY_ORIENTATION_0), 70 logicalLeft(0), logicalTop(0), logicalRight(0), logicalBottom(0), 71 physicalLeft(0), physicalTop(0), physicalRight(0), physicalBottom(0), 72 deviceWidth(0), deviceHeight(0) { 73 } 74 75 bool operator==(const DisplayViewport& other) const { 76 return displayId == other.displayId 77 && orientation == other.orientation 78 && logicalLeft == other.logicalLeft 79 && logicalTop == other.logicalTop 80 && logicalRight == other.logicalRight 81 && logicalBottom == other.logicalBottom 82 && physicalLeft == other.physicalLeft 83 && physicalTop == other.physicalTop 84 && physicalRight == other.physicalRight 85 && physicalBottom == other.physicalBottom 86 && deviceWidth == other.deviceWidth 87 && deviceHeight == other.deviceHeight; 88 } 89 90 bool operator!=(const DisplayViewport& other) const { 91 return !(*this == other); 92 } 93 94 inline bool isValid() const { 95 return displayId >= 0; 96 } 97 98 void setNonDisplayViewport(int32_t width, int32_t height) { 99 displayId = ADISPLAY_ID_NONE; 100 orientation = DISPLAY_ORIENTATION_0; 101 logicalLeft = 0; 102 logicalTop = 0; 103 logicalRight = width; 104 logicalBottom = height; 105 physicalLeft = 0; 106 physicalTop = 0; 107 physicalRight = width; 108 physicalBottom = height; 109 deviceWidth = width; 110 deviceHeight = height; 111 } 112 }; 113 114 /* 115 * Input reader configuration. 116 * 117 * Specifies various options that modify the behavior of the input reader. 118 */ 119 struct InputReaderConfiguration { 120 // Describes changes that have occurred. 121 enum { 122 // The pointer speed changed. 123 CHANGE_POINTER_SPEED = 1 << 0, 124 125 // The pointer gesture control changed. 126 CHANGE_POINTER_GESTURE_ENABLEMENT = 1 << 1, 127 128 // The display size or orientation changed. 129 CHANGE_DISPLAY_INFO = 1 << 2, 130 131 // The visible touches option changed. 132 CHANGE_SHOW_TOUCHES = 1 << 3, 133 134 // The keyboard layouts must be reloaded. 135 CHANGE_KEYBOARD_LAYOUTS = 1 << 4, 136 137 // The device name alias supplied by the may have changed for some devices. 138 CHANGE_DEVICE_ALIAS = 1 << 5, 139 140 // All devices must be reopened. 141 CHANGE_MUST_REOPEN = 1 << 31, 142 }; 143 144 // Gets the amount of time to disable virtual keys after the screen is touched 145 // in order to filter out accidental virtual key presses due to swiping gestures 146 // or taps near the edge of the display. May be 0 to disable the feature. 147 nsecs_t virtualKeyQuietTime; 148 149 // The excluded device names for the platform. 150 // Devices with these names will be ignored. 151 Vector<String8> excludedDeviceNames; 152 153 // Velocity control parameters for mouse pointer movements. 154 VelocityControlParameters pointerVelocityControlParameters; 155 156 // Velocity control parameters for mouse wheel movements. 157 VelocityControlParameters wheelVelocityControlParameters; 158 159 // True if pointer gestures are enabled. 160 bool pointerGesturesEnabled; 161 162 // Quiet time between certain pointer gesture transitions. 163 // Time to allow for all fingers or buttons to settle into a stable state before 164 // starting a new gesture. 165 nsecs_t pointerGestureQuietInterval; 166 167 // The minimum speed that a pointer must travel for us to consider switching the active 168 // touch pointer to it during a drag. This threshold is set to avoid switching due 169 // to noise from a finger resting on the touch pad (perhaps just pressing it down). 170 float pointerGestureDragMinSwitchSpeed; // in pixels per second 171 172 // Tap gesture delay time. 173 // The time between down and up must be less than this to be considered a tap. 174 nsecs_t pointerGestureTapInterval; 175 176 // Tap drag gesture delay time. 177 // The time between the previous tap's up and the next down must be less than 178 // this to be considered a drag. Otherwise, the previous tap is finished and a 179 // new tap begins. 180 // 181 // Note that the previous tap will be held down for this entire duration so this 182 // interval must be shorter than the long press timeout. 183 nsecs_t pointerGestureTapDragInterval; 184 185 // The distance in pixels that the pointer is allowed to move from initial down 186 // to up and still be called a tap. 187 float pointerGestureTapSlop; // in pixels 188 189 // Time after the first touch points go down to settle on an initial centroid. 190 // This is intended to be enough time to handle cases where the user puts down two 191 // fingers at almost but not quite exactly the same time. 192 nsecs_t pointerGestureMultitouchSettleInterval; 193 194 // The transition from PRESS to SWIPE or FREEFORM gesture mode is made when 195 // at least two pointers have moved at least this far from their starting place. 196 float pointerGestureMultitouchMinDistance; // in pixels 197 198 // The transition from PRESS to SWIPE gesture mode can only occur when the 199 // cosine of the angle between the two vectors is greater than or equal to than this value 200 // which indicates that the vectors are oriented in the same direction. 201 // When the vectors are oriented in the exactly same direction, the cosine is 1.0. 202 // (In exactly opposite directions, the cosine is -1.0.) 203 float pointerGestureSwipeTransitionAngleCosine; 204 205 // The transition from PRESS to SWIPE gesture mode can only occur when the 206 // fingers are no more than this far apart relative to the diagonal size of 207 // the touch pad. For example, a ratio of 0.5 means that the fingers must be 208 // no more than half the diagonal size of the touch pad apart. 209 float pointerGestureSwipeMaxWidthRatio; 210 211 // The gesture movement speed factor relative to the size of the display. 212 // Movement speed applies when the fingers are moving in the same direction. 213 // Without acceleration, a full swipe of the touch pad diagonal in movement mode 214 // will cover this portion of the display diagonal. 215 float pointerGestureMovementSpeedRatio; 216 217 // The gesture zoom speed factor relative to the size of the display. 218 // Zoom speed applies when the fingers are mostly moving relative to each other 219 // to execute a scale gesture or similar. 220 // Without acceleration, a full swipe of the touch pad diagonal in zoom mode 221 // will cover this portion of the display diagonal. 222 float pointerGestureZoomSpeedRatio; 223 224 // True to show the location of touches on the touch screen as spots. 225 bool showTouches; 226 227 InputReaderConfiguration() : 228 virtualKeyQuietTime(0), 229 pointerVelocityControlParameters(1.0f, 500.0f, 3000.0f, 3.0f), 230 wheelVelocityControlParameters(1.0f, 15.0f, 50.0f, 4.0f), 231 pointerGesturesEnabled(true), 232 pointerGestureQuietInterval(100 * 1000000LL), // 100 ms 233 pointerGestureDragMinSwitchSpeed(50), // 50 pixels per second 234 pointerGestureTapInterval(150 * 1000000LL), // 150 ms 235 pointerGestureTapDragInterval(150 * 1000000LL), // 150 ms 236 pointerGestureTapSlop(10.0f), // 10 pixels 237 pointerGestureMultitouchSettleInterval(100 * 1000000LL), // 100 ms 238 pointerGestureMultitouchMinDistance(15), // 15 pixels 239 pointerGestureSwipeTransitionAngleCosine(0.2588f), // cosine of 75 degrees 240 pointerGestureSwipeMaxWidthRatio(0.25f), 241 pointerGestureMovementSpeedRatio(0.8f), 242 pointerGestureZoomSpeedRatio(0.3f), 243 showTouches(false) { } 244 245 bool getDisplayInfo(bool external, DisplayViewport* outViewport) const; 246 void setDisplayInfo(bool external, const DisplayViewport& viewport); 247 248 private: 249 DisplayViewport mInternalDisplay; 250 DisplayViewport mExternalDisplay; 251 }; 252 253 254 /* 255 * Input reader policy interface. 256 * 257 * The input reader policy is used by the input reader to interact with the Window Manager 258 * and other system components. 259 * 260 * The actual implementation is partially supported by callbacks into the DVM 261 * via JNI. This interface is also mocked in the unit tests. 262 * 263 * These methods must NOT re-enter the input reader since they may be called while 264 * holding the input reader lock. 265 */ 266 class InputReaderPolicyInterface : public virtual RefBase { 267 protected: 268 InputReaderPolicyInterface() { } 269 virtual ~InputReaderPolicyInterface() { } 270 271 public: 272 /* Gets the input reader configuration. */ 273 virtual void getReaderConfiguration(InputReaderConfiguration* outConfig) = 0; 274 275 /* Gets a pointer controller associated with the specified cursor device (ie. a mouse). */ 276 virtual sp<PointerControllerInterface> obtainPointerController(int32_t deviceId) = 0; 277 278 /* Notifies the input reader policy that some input devices have changed 279 * and provides information about all current input devices. 280 */ 281 virtual void notifyInputDevicesChanged(const Vector<InputDeviceInfo>& inputDevices) = 0; 282 283 /* Gets the keyboard layout for a particular input device. */ 284 virtual sp<KeyCharacterMap> getKeyboardLayoutOverlay(const String8& inputDeviceDescriptor) = 0; 285 286 /* Gets a user-supplied alias for a particular input device, or an empty string if none. */ 287 virtual String8 getDeviceAlias(const InputDeviceIdentifier& identifier) = 0; 288 }; 289 290 291 /* Processes raw input events and sends cooked event data to an input listener. */ 292 class InputReaderInterface : public virtual RefBase { 293 protected: 294 InputReaderInterface() { } 295 virtual ~InputReaderInterface() { } 296 297 public: 298 /* Dumps the state of the input reader. 299 * 300 * This method may be called on any thread (usually by the input manager). */ 301 virtual void dump(String8& dump) = 0; 302 303 /* Called by the heatbeat to ensures that the reader has not deadlocked. */ 304 virtual void monitor() = 0; 305 306 /* Runs a single iteration of the processing loop. 307 * Nominally reads and processes one incoming message from the EventHub. 308 * 309 * This method should be called on the input reader thread. 310 */ 311 virtual void loopOnce() = 0; 312 313 /* Gets information about all input devices. 314 * 315 * This method may be called on any thread (usually by the input manager). 316 */ 317 virtual void getInputDevices(Vector<InputDeviceInfo>& outInputDevices) = 0; 318 319 /* Query current input state. */ 320 virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, 321 int32_t scanCode) = 0; 322 virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, 323 int32_t keyCode) = 0; 324 virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, 325 int32_t sw) = 0; 326 327 /* Determine whether physical keys exist for the given framework-domain key codes. */ 328 virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, 329 size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) = 0; 330 331 /* Requests that a reconfiguration of all input devices. 332 * The changes flag is a bitfield that indicates what has changed and whether 333 * the input devices must all be reopened. */ 334 virtual void requestRefreshConfiguration(uint32_t changes) = 0; 335 336 /* Controls the vibrator of a particular input device. */ 337 virtual void vibrate(int32_t deviceId, const nsecs_t* pattern, size_t patternSize, 338 ssize_t repeat, int32_t token) = 0; 339 virtual void cancelVibrate(int32_t deviceId, int32_t token) = 0; 340 }; 341 342 343 /* Internal interface used by individual input devices to access global input device state 344 * and parameters maintained by the input reader. 345 */ 346 class InputReaderContext { 347 public: 348 InputReaderContext() { } 349 virtual ~InputReaderContext() { } 350 351 virtual void updateGlobalMetaState() = 0; 352 virtual int32_t getGlobalMetaState() = 0; 353 354 virtual void disableVirtualKeysUntil(nsecs_t time) = 0; 355 virtual bool shouldDropVirtualKey(nsecs_t now, 356 InputDevice* device, int32_t keyCode, int32_t scanCode) = 0; 357 358 virtual void fadePointer() = 0; 359 360 virtual void requestTimeoutAtTime(nsecs_t when) = 0; 361 virtual int32_t bumpGeneration() = 0; 362 363 virtual InputReaderPolicyInterface* getPolicy() = 0; 364 virtual InputListenerInterface* getListener() = 0; 365 virtual EventHubInterface* getEventHub() = 0; 366 }; 367 368 369 /* The input reader reads raw event data from the event hub and processes it into input events 370 * that it sends to the input listener. Some functions of the input reader, such as early 371 * event filtering in low power states, are controlled by a separate policy object. 372 * 373 * The InputReader owns a collection of InputMappers. Most of the work it does happens 374 * on the input reader thread but the InputReader can receive queries from other system 375 * components running on arbitrary threads. To keep things manageable, the InputReader 376 * uses a single Mutex to guard its state. The Mutex may be held while calling into the 377 * EventHub or the InputReaderPolicy but it is never held while calling into the 378 * InputListener. 379 */ 380 class InputReader : public InputReaderInterface { 381 public: 382 InputReader(const sp<EventHubInterface>& eventHub, 383 const sp<InputReaderPolicyInterface>& policy, 384 const sp<InputListenerInterface>& listener); 385 virtual ~InputReader(); 386 387 virtual void dump(String8& dump); 388 virtual void monitor(); 389 390 virtual void loopOnce(); 391 392 virtual void getInputDevices(Vector<InputDeviceInfo>& outInputDevices); 393 394 virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, 395 int32_t scanCode); 396 virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, 397 int32_t keyCode); 398 virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, 399 int32_t sw); 400 401 virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, 402 size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); 403 404 virtual void requestRefreshConfiguration(uint32_t changes); 405 406 virtual void vibrate(int32_t deviceId, const nsecs_t* pattern, size_t patternSize, 407 ssize_t repeat, int32_t token); 408 virtual void cancelVibrate(int32_t deviceId, int32_t token); 409 410 protected: 411 // These members are protected so they can be instrumented by test cases. 412 virtual InputDevice* createDeviceLocked(int32_t deviceId, 413 const InputDeviceIdentifier& identifier, uint32_t classes); 414 415 class ContextImpl : public InputReaderContext { 416 InputReader* mReader; 417 418 public: 419 ContextImpl(InputReader* reader); 420 421 virtual void updateGlobalMetaState(); 422 virtual int32_t getGlobalMetaState(); 423 virtual void disableVirtualKeysUntil(nsecs_t time); 424 virtual bool shouldDropVirtualKey(nsecs_t now, 425 InputDevice* device, int32_t keyCode, int32_t scanCode); 426 virtual void fadePointer(); 427 virtual void requestTimeoutAtTime(nsecs_t when); 428 virtual int32_t bumpGeneration(); 429 virtual InputReaderPolicyInterface* getPolicy(); 430 virtual InputListenerInterface* getListener(); 431 virtual EventHubInterface* getEventHub(); 432 } mContext; 433 434 friend class ContextImpl; 435 436 private: 437 Mutex mLock; 438 439 Condition mReaderIsAliveCondition; 440 441 sp<EventHubInterface> mEventHub; 442 sp<InputReaderPolicyInterface> mPolicy; 443 sp<QueuedInputListener> mQueuedListener; 444 445 InputReaderConfiguration mConfig; 446 447 // The event queue. 448 static const int EVENT_BUFFER_SIZE = 256; 449 RawEvent mEventBuffer[EVENT_BUFFER_SIZE]; 450 451 KeyedVector<int32_t, InputDevice*> mDevices; 452 453 // low-level input event decoding and device management 454 void processEventsLocked(const RawEvent* rawEvents, size_t count); 455 456 void addDeviceLocked(nsecs_t when, int32_t deviceId); 457 void removeDeviceLocked(nsecs_t when, int32_t deviceId); 458 void processEventsForDeviceLocked(int32_t deviceId, const RawEvent* rawEvents, size_t count); 459 void timeoutExpiredLocked(nsecs_t when); 460 461 void handleConfigurationChangedLocked(nsecs_t when); 462 463 int32_t mGlobalMetaState; 464 void updateGlobalMetaStateLocked(); 465 int32_t getGlobalMetaStateLocked(); 466 467 void fadePointerLocked(); 468 469 int32_t mGeneration; 470 int32_t bumpGenerationLocked(); 471 472 void getInputDevicesLocked(Vector<InputDeviceInfo>& outInputDevices); 473 474 nsecs_t mDisableVirtualKeysTimeout; 475 void disableVirtualKeysUntilLocked(nsecs_t time); 476 bool shouldDropVirtualKeyLocked(nsecs_t now, 477 InputDevice* device, int32_t keyCode, int32_t scanCode); 478 479 nsecs_t mNextTimeout; 480 void requestTimeoutAtTimeLocked(nsecs_t when); 481 482 uint32_t mConfigurationChangesToRefresh; 483 void refreshConfigurationLocked(uint32_t changes); 484 485 // state queries 486 typedef int32_t (InputDevice::*GetStateFunc)(uint32_t sourceMask, int32_t code); 487 int32_t getStateLocked(int32_t deviceId, uint32_t sourceMask, int32_t code, 488 GetStateFunc getStateFunc); 489 bool markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask, size_t numCodes, 490 const int32_t* keyCodes, uint8_t* outFlags); 491 }; 492 493 494 /* Reads raw events from the event hub and processes them, endlessly. */ 495 class InputReaderThread : public Thread { 496 public: 497 InputReaderThread(const sp<InputReaderInterface>& reader); 498 virtual ~InputReaderThread(); 499 500 private: 501 sp<InputReaderInterface> mReader; 502 503 virtual bool threadLoop(); 504 }; 505 506 507 /* Represents the state of a single input device. */ 508 class InputDevice { 509 public: 510 InputDevice(InputReaderContext* context, int32_t id, int32_t generation, 511 const InputDeviceIdentifier& identifier, uint32_t classes); 512 ~InputDevice(); 513 514 inline InputReaderContext* getContext() { return mContext; } 515 inline int32_t getId() { return mId; } 516 inline int32_t getGeneration() { return mGeneration; } 517 inline const String8& getName() { return mIdentifier.name; } 518 inline uint32_t getClasses() { return mClasses; } 519 inline uint32_t getSources() { return mSources; } 520 521 inline bool isExternal() { return mIsExternal; } 522 inline void setExternal(bool external) { mIsExternal = external; } 523 524 inline bool isIgnored() { return mMappers.isEmpty(); } 525 526 void dump(String8& dump); 527 void addMapper(InputMapper* mapper); 528 void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 529 void reset(nsecs_t when); 530 void process(const RawEvent* rawEvents, size_t count); 531 void timeoutExpired(nsecs_t when); 532 533 void getDeviceInfo(InputDeviceInfo* outDeviceInfo); 534 int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); 535 int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); 536 int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); 537 bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 538 const int32_t* keyCodes, uint8_t* outFlags); 539 void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token); 540 void cancelVibrate(int32_t token); 541 542 int32_t getMetaState(); 543 544 void fadePointer(); 545 546 void bumpGeneration(); 547 548 void notifyReset(nsecs_t when); 549 550 inline const PropertyMap& getConfiguration() { return mConfiguration; } 551 inline EventHubInterface* getEventHub() { return mContext->getEventHub(); } 552 553 bool hasKey(int32_t code) { 554 return getEventHub()->hasScanCode(mId, code); 555 } 556 557 bool hasAbsoluteAxis(int32_t code) { 558 RawAbsoluteAxisInfo info; 559 getEventHub()->getAbsoluteAxisInfo(mId, code, &info); 560 return info.valid; 561 } 562 563 bool isKeyPressed(int32_t code) { 564 return getEventHub()->getScanCodeState(mId, code) == AKEY_STATE_DOWN; 565 } 566 567 int32_t getAbsoluteAxisValue(int32_t code) { 568 int32_t value; 569 getEventHub()->getAbsoluteAxisValue(mId, code, &value); 570 return value; 571 } 572 573 private: 574 InputReaderContext* mContext; 575 int32_t mId; 576 int32_t mGeneration; 577 InputDeviceIdentifier mIdentifier; 578 String8 mAlias; 579 uint32_t mClasses; 580 581 Vector<InputMapper*> mMappers; 582 583 uint32_t mSources; 584 bool mIsExternal; 585 bool mDropUntilNextSync; 586 587 typedef int32_t (InputMapper::*GetStateFunc)(uint32_t sourceMask, int32_t code); 588 int32_t getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc); 589 590 PropertyMap mConfiguration; 591 }; 592 593 594 /* Keeps track of the state of mouse or touch pad buttons. */ 595 class CursorButtonAccumulator { 596 public: 597 CursorButtonAccumulator(); 598 void reset(InputDevice* device); 599 600 void process(const RawEvent* rawEvent); 601 602 uint32_t getButtonState() const; 603 604 private: 605 bool mBtnLeft; 606 bool mBtnRight; 607 bool mBtnMiddle; 608 bool mBtnBack; 609 bool mBtnSide; 610 bool mBtnForward; 611 bool mBtnExtra; 612 bool mBtnTask; 613 614 void clearButtons(); 615 }; 616 617 618 /* Keeps track of cursor movements. */ 619 620 class CursorMotionAccumulator { 621 public: 622 CursorMotionAccumulator(); 623 void reset(InputDevice* device); 624 625 void process(const RawEvent* rawEvent); 626 void finishSync(); 627 628 inline int32_t getRelativeX() const { return mRelX; } 629 inline int32_t getRelativeY() const { return mRelY; } 630 631 private: 632 int32_t mRelX; 633 int32_t mRelY; 634 635 void clearRelativeAxes(); 636 }; 637 638 639 /* Keeps track of cursor scrolling motions. */ 640 641 class CursorScrollAccumulator { 642 public: 643 CursorScrollAccumulator(); 644 void configure(InputDevice* device); 645 void reset(InputDevice* device); 646 647 void process(const RawEvent* rawEvent); 648 void finishSync(); 649 650 inline bool haveRelativeVWheel() const { return mHaveRelWheel; } 651 inline bool haveRelativeHWheel() const { return mHaveRelHWheel; } 652 653 inline int32_t getRelativeX() const { return mRelX; } 654 inline int32_t getRelativeY() const { return mRelY; } 655 inline int32_t getRelativeVWheel() const { return mRelWheel; } 656 inline int32_t getRelativeHWheel() const { return mRelHWheel; } 657 658 private: 659 bool mHaveRelWheel; 660 bool mHaveRelHWheel; 661 662 int32_t mRelX; 663 int32_t mRelY; 664 int32_t mRelWheel; 665 int32_t mRelHWheel; 666 667 void clearRelativeAxes(); 668 }; 669 670 671 /* Keeps track of the state of touch, stylus and tool buttons. */ 672 class TouchButtonAccumulator { 673 public: 674 TouchButtonAccumulator(); 675 void configure(InputDevice* device); 676 void reset(InputDevice* device); 677 678 void process(const RawEvent* rawEvent); 679 680 uint32_t getButtonState() const; 681 int32_t getToolType() const; 682 bool isToolActive() const; 683 bool isHovering() const; 684 bool hasStylus() const; 685 686 private: 687 bool mHaveBtnTouch; 688 bool mHaveStylus; 689 690 bool mBtnTouch; 691 bool mBtnStylus; 692 bool mBtnStylus2; 693 bool mBtnToolFinger; 694 bool mBtnToolPen; 695 bool mBtnToolRubber; 696 bool mBtnToolBrush; 697 bool mBtnToolPencil; 698 bool mBtnToolAirbrush; 699 bool mBtnToolMouse; 700 bool mBtnToolLens; 701 bool mBtnToolDoubleTap; 702 bool mBtnToolTripleTap; 703 bool mBtnToolQuadTap; 704 705 void clearButtons(); 706 }; 707 708 709 /* Raw axis information from the driver. */ 710 struct RawPointerAxes { 711 RawAbsoluteAxisInfo x; 712 RawAbsoluteAxisInfo y; 713 RawAbsoluteAxisInfo pressure; 714 RawAbsoluteAxisInfo touchMajor; 715 RawAbsoluteAxisInfo touchMinor; 716 RawAbsoluteAxisInfo toolMajor; 717 RawAbsoluteAxisInfo toolMinor; 718 RawAbsoluteAxisInfo orientation; 719 RawAbsoluteAxisInfo distance; 720 RawAbsoluteAxisInfo tiltX; 721 RawAbsoluteAxisInfo tiltY; 722 RawAbsoluteAxisInfo trackingId; 723 RawAbsoluteAxisInfo slot; 724 725 RawPointerAxes(); 726 void clear(); 727 }; 728 729 730 /* Raw data for a collection of pointers including a pointer id mapping table. */ 731 struct RawPointerData { 732 struct Pointer { 733 uint32_t id; 734 int32_t x; 735 int32_t y; 736 int32_t pressure; 737 int32_t touchMajor; 738 int32_t touchMinor; 739 int32_t toolMajor; 740 int32_t toolMinor; 741 int32_t orientation; 742 int32_t distance; 743 int32_t tiltX; 744 int32_t tiltY; 745 int32_t toolType; // a fully decoded AMOTION_EVENT_TOOL_TYPE constant 746 bool isHovering; 747 }; 748 749 uint32_t pointerCount; 750 Pointer pointers[MAX_POINTERS]; 751 BitSet32 hoveringIdBits, touchingIdBits; 752 uint32_t idToIndex[MAX_POINTER_ID + 1]; 753 754 RawPointerData(); 755 void clear(); 756 void copyFrom(const RawPointerData& other); 757 void getCentroidOfTouchingPointers(float* outX, float* outY) const; 758 759 inline void markIdBit(uint32_t id, bool isHovering) { 760 if (isHovering) { 761 hoveringIdBits.markBit(id); 762 } else { 763 touchingIdBits.markBit(id); 764 } 765 } 766 767 inline void clearIdBits() { 768 hoveringIdBits.clear(); 769 touchingIdBits.clear(); 770 } 771 772 inline const Pointer& pointerForId(uint32_t id) const { 773 return pointers[idToIndex[id]]; 774 } 775 776 inline bool isHovering(uint32_t pointerIndex) { 777 return pointers[pointerIndex].isHovering; 778 } 779 }; 780 781 782 /* Cooked data for a collection of pointers including a pointer id mapping table. */ 783 struct CookedPointerData { 784 uint32_t pointerCount; 785 PointerProperties pointerProperties[MAX_POINTERS]; 786 PointerCoords pointerCoords[MAX_POINTERS]; 787 BitSet32 hoveringIdBits, touchingIdBits; 788 uint32_t idToIndex[MAX_POINTER_ID + 1]; 789 790 CookedPointerData(); 791 void clear(); 792 void copyFrom(const CookedPointerData& other); 793 794 inline const PointerCoords& pointerCoordsForId(uint32_t id) const { 795 return pointerCoords[idToIndex[id]]; 796 } 797 798 inline bool isHovering(uint32_t pointerIndex) { 799 return hoveringIdBits.hasBit(pointerProperties[pointerIndex].id); 800 } 801 }; 802 803 804 /* Keeps track of the state of single-touch protocol. */ 805 class SingleTouchMotionAccumulator { 806 public: 807 SingleTouchMotionAccumulator(); 808 809 void process(const RawEvent* rawEvent); 810 void reset(InputDevice* device); 811 812 inline int32_t getAbsoluteX() const { return mAbsX; } 813 inline int32_t getAbsoluteY() const { return mAbsY; } 814 inline int32_t getAbsolutePressure() const { return mAbsPressure; } 815 inline int32_t getAbsoluteToolWidth() const { return mAbsToolWidth; } 816 inline int32_t getAbsoluteDistance() const { return mAbsDistance; } 817 inline int32_t getAbsoluteTiltX() const { return mAbsTiltX; } 818 inline int32_t getAbsoluteTiltY() const { return mAbsTiltY; } 819 820 private: 821 int32_t mAbsX; 822 int32_t mAbsY; 823 int32_t mAbsPressure; 824 int32_t mAbsToolWidth; 825 int32_t mAbsDistance; 826 int32_t mAbsTiltX; 827 int32_t mAbsTiltY; 828 829 void clearAbsoluteAxes(); 830 }; 831 832 833 /* Keeps track of the state of multi-touch protocol. */ 834 class MultiTouchMotionAccumulator { 835 public: 836 class Slot { 837 public: 838 inline bool isInUse() const { return mInUse; } 839 inline int32_t getX() const { return mAbsMTPositionX; } 840 inline int32_t getY() const { return mAbsMTPositionY; } 841 inline int32_t getTouchMajor() const { return mAbsMTTouchMajor; } 842 inline int32_t getTouchMinor() const { 843 return mHaveAbsMTTouchMinor ? mAbsMTTouchMinor : mAbsMTTouchMajor; } 844 inline int32_t getToolMajor() const { return mAbsMTWidthMajor; } 845 inline int32_t getToolMinor() const { 846 return mHaveAbsMTWidthMinor ? mAbsMTWidthMinor : mAbsMTWidthMajor; } 847 inline int32_t getOrientation() const { return mAbsMTOrientation; } 848 inline int32_t getTrackingId() const { return mAbsMTTrackingId; } 849 inline int32_t getPressure() const { return mAbsMTPressure; } 850 inline int32_t getDistance() const { return mAbsMTDistance; } 851 inline int32_t getToolType() const; 852 853 private: 854 friend class MultiTouchMotionAccumulator; 855 856 bool mInUse; 857 bool mHaveAbsMTTouchMinor; 858 bool mHaveAbsMTWidthMinor; 859 bool mHaveAbsMTToolType; 860 861 int32_t mAbsMTPositionX; 862 int32_t mAbsMTPositionY; 863 int32_t mAbsMTTouchMajor; 864 int32_t mAbsMTTouchMinor; 865 int32_t mAbsMTWidthMajor; 866 int32_t mAbsMTWidthMinor; 867 int32_t mAbsMTOrientation; 868 int32_t mAbsMTTrackingId; 869 int32_t mAbsMTPressure; 870 int32_t mAbsMTDistance; 871 int32_t mAbsMTToolType; 872 873 Slot(); 874 void clear(); 875 }; 876 877 MultiTouchMotionAccumulator(); 878 ~MultiTouchMotionAccumulator(); 879 880 void configure(InputDevice* device, size_t slotCount, bool usingSlotsProtocol); 881 void reset(InputDevice* device); 882 void process(const RawEvent* rawEvent); 883 void finishSync(); 884 bool hasStylus() const; 885 886 inline size_t getSlotCount() const { return mSlotCount; } 887 inline const Slot* getSlot(size_t index) const { return &mSlots[index]; } 888 889 private: 890 int32_t mCurrentSlot; 891 Slot* mSlots; 892 size_t mSlotCount; 893 bool mUsingSlotsProtocol; 894 bool mHaveStylus; 895 896 void clearSlots(int32_t initialSlot); 897 }; 898 899 900 /* An input mapper transforms raw input events into cooked event data. 901 * A single input device can have multiple associated input mappers in order to interpret 902 * different classes of events. 903 * 904 * InputMapper lifecycle: 905 * - create 906 * - configure with 0 changes 907 * - reset 908 * - process, process, process (may occasionally reconfigure with non-zero changes or reset) 909 * - reset 910 * - destroy 911 */ 912 class InputMapper { 913 public: 914 InputMapper(InputDevice* device); 915 virtual ~InputMapper(); 916 917 inline InputDevice* getDevice() { return mDevice; } 918 inline int32_t getDeviceId() { return mDevice->getId(); } 919 inline const String8 getDeviceName() { return mDevice->getName(); } 920 inline InputReaderContext* getContext() { return mContext; } 921 inline InputReaderPolicyInterface* getPolicy() { return mContext->getPolicy(); } 922 inline InputListenerInterface* getListener() { return mContext->getListener(); } 923 inline EventHubInterface* getEventHub() { return mContext->getEventHub(); } 924 925 virtual uint32_t getSources() = 0; 926 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 927 virtual void dump(String8& dump); 928 virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 929 virtual void reset(nsecs_t when); 930 virtual void process(const RawEvent* rawEvent) = 0; 931 virtual void timeoutExpired(nsecs_t when); 932 933 virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); 934 virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); 935 virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); 936 virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 937 const int32_t* keyCodes, uint8_t* outFlags); 938 virtual void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, 939 int32_t token); 940 virtual void cancelVibrate(int32_t token); 941 942 virtual int32_t getMetaState(); 943 944 virtual void fadePointer(); 945 946 protected: 947 InputDevice* mDevice; 948 InputReaderContext* mContext; 949 950 status_t getAbsoluteAxisInfo(int32_t axis, RawAbsoluteAxisInfo* axisInfo); 951 void bumpGeneration(); 952 953 static void dumpRawAbsoluteAxisInfo(String8& dump, 954 const RawAbsoluteAxisInfo& axis, const char* name); 955 }; 956 957 958 class SwitchInputMapper : public InputMapper { 959 public: 960 SwitchInputMapper(InputDevice* device); 961 virtual ~SwitchInputMapper(); 962 963 virtual uint32_t getSources(); 964 virtual void process(const RawEvent* rawEvent); 965 966 virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); 967 968 private: 969 uint32_t mUpdatedSwitchValues; 970 uint32_t mUpdatedSwitchMask; 971 972 void processSwitch(int32_t switchCode, int32_t switchValue); 973 void sync(nsecs_t when); 974 }; 975 976 977 class VibratorInputMapper : public InputMapper { 978 public: 979 VibratorInputMapper(InputDevice* device); 980 virtual ~VibratorInputMapper(); 981 982 virtual uint32_t getSources(); 983 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 984 virtual void process(const RawEvent* rawEvent); 985 986 virtual void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, 987 int32_t token); 988 virtual void cancelVibrate(int32_t token); 989 virtual void timeoutExpired(nsecs_t when); 990 virtual void dump(String8& dump); 991 992 private: 993 bool mVibrating; 994 nsecs_t mPattern[MAX_VIBRATE_PATTERN_SIZE]; 995 size_t mPatternSize; 996 ssize_t mRepeat; 997 int32_t mToken; 998 ssize_t mIndex; 999 nsecs_t mNextStepTime; 1000 1001 void nextStep(); 1002 void stopVibrating(); 1003 }; 1004 1005 1006 class KeyboardInputMapper : public InputMapper { 1007 public: 1008 KeyboardInputMapper(InputDevice* device, uint32_t source, int32_t keyboardType); 1009 virtual ~KeyboardInputMapper(); 1010 1011 virtual uint32_t getSources(); 1012 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 1013 virtual void dump(String8& dump); 1014 virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 1015 virtual void reset(nsecs_t when); 1016 virtual void process(const RawEvent* rawEvent); 1017 1018 virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); 1019 virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); 1020 virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 1021 const int32_t* keyCodes, uint8_t* outFlags); 1022 1023 virtual int32_t getMetaState(); 1024 1025 private: 1026 struct KeyDown { 1027 int32_t keyCode; 1028 int32_t scanCode; 1029 }; 1030 1031 uint32_t mSource; 1032 int32_t mKeyboardType; 1033 1034 int32_t mOrientation; // orientation for dpad keys 1035 1036 Vector<KeyDown> mKeyDowns; // keys that are down 1037 int32_t mMetaState; 1038 nsecs_t mDownTime; // time of most recent key down 1039 1040 int32_t mCurrentHidUsage; // most recent HID usage seen this packet, or 0 if none 1041 1042 struct LedState { 1043 bool avail; // led is available 1044 bool on; // we think the led is currently on 1045 }; 1046 LedState mCapsLockLedState; 1047 LedState mNumLockLedState; 1048 LedState mScrollLockLedState; 1049 1050 // Immutable configuration parameters. 1051 struct Parameters { 1052 bool hasAssociatedDisplay; 1053 bool orientationAware; 1054 } mParameters; 1055 1056 void configureParameters(); 1057 void dumpParameters(String8& dump); 1058 1059 bool isKeyboardOrGamepadKey(int32_t scanCode); 1060 1061 void processKey(nsecs_t when, bool down, int32_t keyCode, int32_t scanCode, 1062 uint32_t policyFlags); 1063 1064 ssize_t findKeyDown(int32_t scanCode); 1065 1066 void resetLedState(); 1067 void initializeLedState(LedState& ledState, int32_t led); 1068 void updateLedState(bool reset); 1069 void updateLedStateForModifier(LedState& ledState, int32_t led, 1070 int32_t modifier, bool reset); 1071 }; 1072 1073 1074 class CursorInputMapper : public InputMapper { 1075 public: 1076 CursorInputMapper(InputDevice* device); 1077 virtual ~CursorInputMapper(); 1078 1079 virtual uint32_t getSources(); 1080 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 1081 virtual void dump(String8& dump); 1082 virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 1083 virtual void reset(nsecs_t when); 1084 virtual void process(const RawEvent* rawEvent); 1085 1086 virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); 1087 1088 virtual void fadePointer(); 1089 1090 private: 1091 // Amount that trackball needs to move in order to generate a key event. 1092 static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6; 1093 1094 // Immutable configuration parameters. 1095 struct Parameters { 1096 enum Mode { 1097 MODE_POINTER, 1098 MODE_NAVIGATION, 1099 }; 1100 1101 Mode mode; 1102 bool hasAssociatedDisplay; 1103 bool orientationAware; 1104 } mParameters; 1105 1106 CursorButtonAccumulator mCursorButtonAccumulator; 1107 CursorMotionAccumulator mCursorMotionAccumulator; 1108 CursorScrollAccumulator mCursorScrollAccumulator; 1109 1110 int32_t mSource; 1111 float mXScale; 1112 float mYScale; 1113 float mXPrecision; 1114 float mYPrecision; 1115 1116 float mVWheelScale; 1117 float mHWheelScale; 1118 1119 // Velocity controls for mouse pointer and wheel movements. 1120 // The controls for X and Y wheel movements are separate to keep them decoupled. 1121 VelocityControl mPointerVelocityControl; 1122 VelocityControl mWheelXVelocityControl; 1123 VelocityControl mWheelYVelocityControl; 1124 1125 int32_t mOrientation; 1126 1127 sp<PointerControllerInterface> mPointerController; 1128 1129 int32_t mButtonState; 1130 nsecs_t mDownTime; 1131 1132 void configureParameters(); 1133 void dumpParameters(String8& dump); 1134 1135 void sync(nsecs_t when); 1136 }; 1137 1138 1139 class TouchInputMapper : public InputMapper { 1140 public: 1141 TouchInputMapper(InputDevice* device); 1142 virtual ~TouchInputMapper(); 1143 1144 virtual uint32_t getSources(); 1145 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 1146 virtual void dump(String8& dump); 1147 virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 1148 virtual void reset(nsecs_t when); 1149 virtual void process(const RawEvent* rawEvent); 1150 1151 virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); 1152 virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); 1153 virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, 1154 const int32_t* keyCodes, uint8_t* outFlags); 1155 1156 virtual void fadePointer(); 1157 virtual void timeoutExpired(nsecs_t when); 1158 1159 protected: 1160 CursorButtonAccumulator mCursorButtonAccumulator; 1161 CursorScrollAccumulator mCursorScrollAccumulator; 1162 TouchButtonAccumulator mTouchButtonAccumulator; 1163 1164 struct VirtualKey { 1165 int32_t keyCode; 1166 int32_t scanCode; 1167 uint32_t flags; 1168 1169 // computed hit box, specified in touch screen coords based on known display size 1170 int32_t hitLeft; 1171 int32_t hitTop; 1172 int32_t hitRight; 1173 int32_t hitBottom; 1174 1175 inline bool isHit(int32_t x, int32_t y) const { 1176 return x >= hitLeft && x <= hitRight && y >= hitTop && y <= hitBottom; 1177 } 1178 }; 1179 1180 // Input sources and device mode. 1181 uint32_t mSource; 1182 1183 enum DeviceMode { 1184 DEVICE_MODE_DISABLED, // input is disabled 1185 DEVICE_MODE_DIRECT, // direct mapping (touchscreen) 1186 DEVICE_MODE_UNSCALED, // unscaled mapping (touchpad) 1187 DEVICE_MODE_NAVIGATION, // unscaled mapping with assist gesture (touch navigation) 1188 DEVICE_MODE_POINTER, // pointer mapping (pointer) 1189 }; 1190 DeviceMode mDeviceMode; 1191 1192 // The reader's configuration. 1193 InputReaderConfiguration mConfig; 1194 1195 // Immutable configuration parameters. 1196 struct Parameters { 1197 enum DeviceType { 1198 DEVICE_TYPE_TOUCH_SCREEN, 1199 DEVICE_TYPE_TOUCH_PAD, 1200 DEVICE_TYPE_TOUCH_NAVIGATION, 1201 DEVICE_TYPE_POINTER, 1202 }; 1203 1204 DeviceType deviceType; 1205 bool hasAssociatedDisplay; 1206 bool associatedDisplayIsExternal; 1207 bool orientationAware; 1208 1209 enum GestureMode { 1210 GESTURE_MODE_POINTER, 1211 GESTURE_MODE_SPOTS, 1212 }; 1213 GestureMode gestureMode; 1214 } mParameters; 1215 1216 // Immutable calibration parameters in parsed form. 1217 struct Calibration { 1218 // Size 1219 enum SizeCalibration { 1220 SIZE_CALIBRATION_DEFAULT, 1221 SIZE_CALIBRATION_NONE, 1222 SIZE_CALIBRATION_GEOMETRIC, 1223 SIZE_CALIBRATION_DIAMETER, 1224 SIZE_CALIBRATION_BOX, 1225 SIZE_CALIBRATION_AREA, 1226 }; 1227 1228 SizeCalibration sizeCalibration; 1229 1230 bool haveSizeScale; 1231 float sizeScale; 1232 bool haveSizeBias; 1233 float sizeBias; 1234 bool haveSizeIsSummed; 1235 bool sizeIsSummed; 1236 1237 // Pressure 1238 enum PressureCalibration { 1239 PRESSURE_CALIBRATION_DEFAULT, 1240 PRESSURE_CALIBRATION_NONE, 1241 PRESSURE_CALIBRATION_PHYSICAL, 1242 PRESSURE_CALIBRATION_AMPLITUDE, 1243 }; 1244 1245 PressureCalibration pressureCalibration; 1246 bool havePressureScale; 1247 float pressureScale; 1248 1249 // Orientation 1250 enum OrientationCalibration { 1251 ORIENTATION_CALIBRATION_DEFAULT, 1252 ORIENTATION_CALIBRATION_NONE, 1253 ORIENTATION_CALIBRATION_INTERPOLATED, 1254 ORIENTATION_CALIBRATION_VECTOR, 1255 }; 1256 1257 OrientationCalibration orientationCalibration; 1258 1259 // Distance 1260 enum DistanceCalibration { 1261 DISTANCE_CALIBRATION_DEFAULT, 1262 DISTANCE_CALIBRATION_NONE, 1263 DISTANCE_CALIBRATION_SCALED, 1264 }; 1265 1266 DistanceCalibration distanceCalibration; 1267 bool haveDistanceScale; 1268 float distanceScale; 1269 1270 enum CoverageCalibration { 1271 COVERAGE_CALIBRATION_DEFAULT, 1272 COVERAGE_CALIBRATION_NONE, 1273 COVERAGE_CALIBRATION_BOX, 1274 }; 1275 1276 CoverageCalibration coverageCalibration; 1277 1278 inline void applySizeScaleAndBias(float* outSize) const { 1279 if (haveSizeScale) { 1280 *outSize *= sizeScale; 1281 } 1282 if (haveSizeBias) { 1283 *outSize += sizeBias; 1284 } 1285 } 1286 } mCalibration; 1287 1288 // Raw pointer axis information from the driver. 1289 RawPointerAxes mRawPointerAxes; 1290 1291 // Raw pointer sample data. 1292 RawPointerData mCurrentRawPointerData; 1293 RawPointerData mLastRawPointerData; 1294 1295 // Cooked pointer sample data. 1296 CookedPointerData mCurrentCookedPointerData; 1297 CookedPointerData mLastCookedPointerData; 1298 1299 // Button state. 1300 int32_t mCurrentButtonState; 1301 int32_t mLastButtonState; 1302 1303 // Scroll state. 1304 int32_t mCurrentRawVScroll; 1305 int32_t mCurrentRawHScroll; 1306 1307 // Id bits used to differentiate fingers, stylus and mouse tools. 1308 BitSet32 mCurrentFingerIdBits; // finger or unknown 1309 BitSet32 mLastFingerIdBits; 1310 BitSet32 mCurrentStylusIdBits; // stylus or eraser 1311 BitSet32 mLastStylusIdBits; 1312 BitSet32 mCurrentMouseIdBits; // mouse or lens 1313 BitSet32 mLastMouseIdBits; 1314 1315 // True if we sent a HOVER_ENTER event. 1316 bool mSentHoverEnter; 1317 1318 // The time the primary pointer last went down. 1319 nsecs_t mDownTime; 1320 1321 // The pointer controller, or null if the device is not a pointer. 1322 sp<PointerControllerInterface> mPointerController; 1323 1324 Vector<VirtualKey> mVirtualKeys; 1325 1326 virtual void configureParameters(); 1327 virtual void dumpParameters(String8& dump); 1328 virtual void configureRawPointerAxes(); 1329 virtual void dumpRawPointerAxes(String8& dump); 1330 virtual void configureSurface(nsecs_t when, bool* outResetNeeded); 1331 virtual void dumpSurface(String8& dump); 1332 virtual void configureVirtualKeys(); 1333 virtual void dumpVirtualKeys(String8& dump); 1334 virtual void parseCalibration(); 1335 virtual void resolveCalibration(); 1336 virtual void dumpCalibration(String8& dump); 1337 virtual bool hasStylus() const = 0; 1338 1339 virtual void syncTouch(nsecs_t when, bool* outHavePointerIds) = 0; 1340 1341 private: 1342 // The current viewport. 1343 // The components of the viewport are specified in the display's rotated orientation. 1344 DisplayViewport mViewport; 1345 1346 // The surface orientation, width and height set by configureSurface(). 1347 // The width and height are derived from the viewport but are specified 1348 // in the natural orientation. 1349 // The surface origin specifies how the surface coordinates should be translated 1350 // to align with the logical display coordinate space. 1351 // The orientation may be different from the viewport orientation as it specifies 1352 // the rotation of the surface coordinates required to produce the viewport's 1353 // requested orientation, so it will depend on whether the device is orientation aware. 1354 int32_t mSurfaceWidth; 1355 int32_t mSurfaceHeight; 1356 int32_t mSurfaceLeft; 1357 int32_t mSurfaceTop; 1358 int32_t mSurfaceOrientation; 1359 1360 // Translation and scaling factors, orientation-independent. 1361 float mXTranslate; 1362 float mXScale; 1363 float mXPrecision; 1364 1365 float mYTranslate; 1366 float mYScale; 1367 float mYPrecision; 1368 1369 float mGeometricScale; 1370 1371 float mPressureScale; 1372 1373 float mSizeScale; 1374 1375 float mOrientationScale; 1376 1377 float mDistanceScale; 1378 1379 bool mHaveTilt; 1380 float mTiltXCenter; 1381 float mTiltXScale; 1382 float mTiltYCenter; 1383 float mTiltYScale; 1384 1385 // Oriented motion ranges for input device info. 1386 struct OrientedRanges { 1387 InputDeviceInfo::MotionRange x; 1388 InputDeviceInfo::MotionRange y; 1389 InputDeviceInfo::MotionRange pressure; 1390 1391 bool haveSize; 1392 InputDeviceInfo::MotionRange size; 1393 1394 bool haveTouchSize; 1395 InputDeviceInfo::MotionRange touchMajor; 1396 InputDeviceInfo::MotionRange touchMinor; 1397 1398 bool haveToolSize; 1399 InputDeviceInfo::MotionRange toolMajor; 1400 InputDeviceInfo::MotionRange toolMinor; 1401 1402 bool haveOrientation; 1403 InputDeviceInfo::MotionRange orientation; 1404 1405 bool haveDistance; 1406 InputDeviceInfo::MotionRange distance; 1407 1408 bool haveTilt; 1409 InputDeviceInfo::MotionRange tilt; 1410 1411 OrientedRanges() { 1412 clear(); 1413 } 1414 1415 void clear() { 1416 haveSize = false; 1417 haveTouchSize = false; 1418 haveToolSize = false; 1419 haveOrientation = false; 1420 haveDistance = false; 1421 haveTilt = false; 1422 } 1423 } mOrientedRanges; 1424 1425 // Oriented dimensions and precision. 1426 float mOrientedXPrecision; 1427 float mOrientedYPrecision; 1428 1429 struct CurrentVirtualKeyState { 1430 bool down; 1431 bool ignored; 1432 nsecs_t downTime; 1433 int32_t keyCode; 1434 int32_t scanCode; 1435 } mCurrentVirtualKey; 1436 1437 // Scale factor for gesture or mouse based pointer movements. 1438 float mPointerXMovementScale; 1439 float mPointerYMovementScale; 1440 1441 // Scale factor for gesture based zooming and other freeform motions. 1442 float mPointerXZoomScale; 1443 float mPointerYZoomScale; 1444 1445 // The maximum swipe width. 1446 float mPointerGestureMaxSwipeWidth; 1447 1448 struct PointerDistanceHeapElement { 1449 uint32_t currentPointerIndex : 8; 1450 uint32_t lastPointerIndex : 8; 1451 uint64_t distance : 48; // squared distance 1452 }; 1453 1454 enum PointerUsage { 1455 POINTER_USAGE_NONE, 1456 POINTER_USAGE_GESTURES, 1457 POINTER_USAGE_STYLUS, 1458 POINTER_USAGE_MOUSE, 1459 }; 1460 PointerUsage mPointerUsage; 1461 1462 struct PointerGesture { 1463 enum Mode { 1464 // No fingers, button is not pressed. 1465 // Nothing happening. 1466 NEUTRAL, 1467 1468 // No fingers, button is not pressed. 1469 // Tap detected. 1470 // Emits DOWN and UP events at the pointer location. 1471 TAP, 1472 1473 // Exactly one finger dragging following a tap. 1474 // Pointer follows the active finger. 1475 // Emits DOWN, MOVE and UP events at the pointer location. 1476 // 1477 // Detect double-taps when the finger goes up while in TAP_DRAG mode. 1478 TAP_DRAG, 1479 1480 // Button is pressed. 1481 // Pointer follows the active finger if there is one. Other fingers are ignored. 1482 // Emits DOWN, MOVE and UP events at the pointer location. 1483 BUTTON_CLICK_OR_DRAG, 1484 1485 // Exactly one finger, button is not pressed. 1486 // Pointer follows the active finger. 1487 // Emits HOVER_MOVE events at the pointer location. 1488 // 1489 // Detect taps when the finger goes up while in HOVER mode. 1490 HOVER, 1491 1492 // Exactly two fingers but neither have moved enough to clearly indicate 1493 // whether a swipe or freeform gesture was intended. We consider the 1494 // pointer to be pressed so this enables clicking or long-pressing on buttons. 1495 // Pointer does not move. 1496 // Emits DOWN, MOVE and UP events with a single stationary pointer coordinate. 1497 PRESS, 1498 1499 // Exactly two fingers moving in the same direction, button is not pressed. 1500 // Pointer does not move. 1501 // Emits DOWN, MOVE and UP events with a single pointer coordinate that 1502 // follows the midpoint between both fingers. 1503 SWIPE, 1504 1505 // Two or more fingers moving in arbitrary directions, button is not pressed. 1506 // Pointer does not move. 1507 // Emits DOWN, POINTER_DOWN, MOVE, POINTER_UP and UP events that follow 1508 // each finger individually relative to the initial centroid of the finger. 1509 FREEFORM, 1510 1511 // Waiting for quiet time to end before starting the next gesture. 1512 QUIET, 1513 }; 1514 1515 // Time the first finger went down. 1516 nsecs_t firstTouchTime; 1517 1518 // The active pointer id from the raw touch data. 1519 int32_t activeTouchId; // -1 if none 1520 1521 // The active pointer id from the gesture last delivered to the application. 1522 int32_t activeGestureId; // -1 if none 1523 1524 // Pointer coords and ids for the current and previous pointer gesture. 1525 Mode currentGestureMode; 1526 BitSet32 currentGestureIdBits; 1527 uint32_t currentGestureIdToIndex[MAX_POINTER_ID + 1]; 1528 PointerProperties currentGestureProperties[MAX_POINTERS]; 1529 PointerCoords currentGestureCoords[MAX_POINTERS]; 1530 1531 Mode lastGestureMode; 1532 BitSet32 lastGestureIdBits; 1533 uint32_t lastGestureIdToIndex[MAX_POINTER_ID + 1]; 1534 PointerProperties lastGestureProperties[MAX_POINTERS]; 1535 PointerCoords lastGestureCoords[MAX_POINTERS]; 1536 1537 // Time the pointer gesture last went down. 1538 nsecs_t downTime; 1539 1540 // Time when the pointer went down for a TAP. 1541 nsecs_t tapDownTime; 1542 1543 // Time when the pointer went up for a TAP. 1544 nsecs_t tapUpTime; 1545 1546 // Location of initial tap. 1547 float tapX, tapY; 1548 1549 // Time we started waiting for quiescence. 1550 nsecs_t quietTime; 1551 1552 // Reference points for multitouch gestures. 1553 float referenceTouchX; // reference touch X/Y coordinates in surface units 1554 float referenceTouchY; 1555 float referenceGestureX; // reference gesture X/Y coordinates in pixels 1556 float referenceGestureY; 1557 1558 // Distance that each pointer has traveled which has not yet been 1559 // subsumed into the reference gesture position. 1560 BitSet32 referenceIdBits; 1561 struct Delta { 1562 float dx, dy; 1563 }; 1564 Delta referenceDeltas[MAX_POINTER_ID + 1]; 1565 1566 // Describes how touch ids are mapped to gesture ids for freeform gestures. 1567 uint32_t freeformTouchToGestureIdMap[MAX_POINTER_ID + 1]; 1568 1569 // A velocity tracker for determining whether to switch active pointers during drags. 1570 VelocityTracker velocityTracker; 1571 1572 void reset() { 1573 firstTouchTime = LLONG_MIN; 1574 activeTouchId = -1; 1575 activeGestureId = -1; 1576 currentGestureMode = NEUTRAL; 1577 currentGestureIdBits.clear(); 1578 lastGestureMode = NEUTRAL; 1579 lastGestureIdBits.clear(); 1580 downTime = 0; 1581 velocityTracker.clear(); 1582 resetTap(); 1583 resetQuietTime(); 1584 } 1585 1586 void resetTap() { 1587 tapDownTime = LLONG_MIN; 1588 tapUpTime = LLONG_MIN; 1589 } 1590 1591 void resetQuietTime() { 1592 quietTime = LLONG_MIN; 1593 } 1594 } mPointerGesture; 1595 1596 struct PointerSimple { 1597 PointerCoords currentCoords; 1598 PointerProperties currentProperties; 1599 PointerCoords lastCoords; 1600 PointerProperties lastProperties; 1601 1602 // True if the pointer is down. 1603 bool down; 1604 1605 // True if the pointer is hovering. 1606 bool hovering; 1607 1608 // Time the pointer last went down. 1609 nsecs_t downTime; 1610 1611 void reset() { 1612 currentCoords.clear(); 1613 currentProperties.clear(); 1614 lastCoords.clear(); 1615 lastProperties.clear(); 1616 down = false; 1617 hovering = false; 1618 downTime = 0; 1619 } 1620 } mPointerSimple; 1621 1622 // The pointer and scroll velocity controls. 1623 VelocityControl mPointerVelocityControl; 1624 VelocityControl mWheelXVelocityControl; 1625 VelocityControl mWheelYVelocityControl; 1626 1627 void sync(nsecs_t when); 1628 1629 bool consumeRawTouches(nsecs_t when, uint32_t policyFlags); 1630 void dispatchVirtualKey(nsecs_t when, uint32_t policyFlags, 1631 int32_t keyEventAction, int32_t keyEventFlags); 1632 1633 void dispatchTouches(nsecs_t when, uint32_t policyFlags); 1634 void dispatchHoverExit(nsecs_t when, uint32_t policyFlags); 1635 void dispatchHoverEnterAndMove(nsecs_t when, uint32_t policyFlags); 1636 void cookPointerData(); 1637 1638 void dispatchPointerUsage(nsecs_t when, uint32_t policyFlags, PointerUsage pointerUsage); 1639 void abortPointerUsage(nsecs_t when, uint32_t policyFlags); 1640 1641 void dispatchPointerGestures(nsecs_t when, uint32_t policyFlags, bool isTimeout); 1642 void abortPointerGestures(nsecs_t when, uint32_t policyFlags); 1643 bool preparePointerGestures(nsecs_t when, 1644 bool* outCancelPreviousGesture, bool* outFinishPreviousGesture, 1645 bool isTimeout); 1646 1647 void dispatchPointerStylus(nsecs_t when, uint32_t policyFlags); 1648 void abortPointerStylus(nsecs_t when, uint32_t policyFlags); 1649 1650 void dispatchPointerMouse(nsecs_t when, uint32_t policyFlags); 1651 void abortPointerMouse(nsecs_t when, uint32_t policyFlags); 1652 1653 void dispatchPointerSimple(nsecs_t when, uint32_t policyFlags, 1654 bool down, bool hovering); 1655 void abortPointerSimple(nsecs_t when, uint32_t policyFlags); 1656 1657 // Dispatches a motion event. 1658 // If the changedId is >= 0 and the action is POINTER_DOWN or POINTER_UP, the 1659 // method will take care of setting the index and transmuting the action to DOWN or UP 1660 // it is the first / last pointer to go down / up. 1661 void dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source, 1662 int32_t action, int32_t flags, int32_t metaState, int32_t buttonState, 1663 int32_t edgeFlags, 1664 const PointerProperties* properties, const PointerCoords* coords, 1665 const uint32_t* idToIndex, BitSet32 idBits, 1666 int32_t changedId, float xPrecision, float yPrecision, nsecs_t downTime); 1667 1668 // Updates pointer coords and properties for pointers with specified ids that have moved. 1669 // Returns true if any of them changed. 1670 bool updateMovedPointers(const PointerProperties* inProperties, 1671 const PointerCoords* inCoords, const uint32_t* inIdToIndex, 1672 PointerProperties* outProperties, PointerCoords* outCoords, 1673 const uint32_t* outIdToIndex, BitSet32 idBits) const; 1674 1675 bool isPointInsideSurface(int32_t x, int32_t y); 1676 const VirtualKey* findVirtualKeyHit(int32_t x, int32_t y); 1677 1678 void assignPointerIds(); 1679 }; 1680 1681 1682 class SingleTouchInputMapper : public TouchInputMapper { 1683 public: 1684 SingleTouchInputMapper(InputDevice* device); 1685 virtual ~SingleTouchInputMapper(); 1686 1687 virtual void reset(nsecs_t when); 1688 virtual void process(const RawEvent* rawEvent); 1689 1690 protected: 1691 virtual void syncTouch(nsecs_t when, bool* outHavePointerIds); 1692 virtual void configureRawPointerAxes(); 1693 virtual bool hasStylus() const; 1694 1695 private: 1696 SingleTouchMotionAccumulator mSingleTouchMotionAccumulator; 1697 }; 1698 1699 1700 class MultiTouchInputMapper : public TouchInputMapper { 1701 public: 1702 MultiTouchInputMapper(InputDevice* device); 1703 virtual ~MultiTouchInputMapper(); 1704 1705 virtual void reset(nsecs_t when); 1706 virtual void process(const RawEvent* rawEvent); 1707 1708 protected: 1709 virtual void syncTouch(nsecs_t when, bool* outHavePointerIds); 1710 virtual void configureRawPointerAxes(); 1711 virtual bool hasStylus() const; 1712 1713 private: 1714 MultiTouchMotionAccumulator mMultiTouchMotionAccumulator; 1715 1716 // Specifies the pointer id bits that are in use, and their associated tracking id. 1717 BitSet32 mPointerIdBits; 1718 int32_t mPointerTrackingIdMap[MAX_POINTER_ID + 1]; 1719 }; 1720 1721 1722 class JoystickInputMapper : public InputMapper { 1723 public: 1724 JoystickInputMapper(InputDevice* device); 1725 virtual ~JoystickInputMapper(); 1726 1727 virtual uint32_t getSources(); 1728 virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); 1729 virtual void dump(String8& dump); 1730 virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); 1731 virtual void reset(nsecs_t when); 1732 virtual void process(const RawEvent* rawEvent); 1733 1734 private: 1735 struct Axis { 1736 RawAbsoluteAxisInfo rawAxisInfo; 1737 AxisInfo axisInfo; 1738 1739 bool explicitlyMapped; // true if the axis was explicitly assigned an axis id 1740 1741 float scale; // scale factor from raw to normalized values 1742 float offset; // offset to add after scaling for normalization 1743 float highScale; // scale factor from raw to normalized values of high split 1744 float highOffset; // offset to add after scaling for normalization of high split 1745 1746 float min; // normalized inclusive minimum 1747 float max; // normalized inclusive maximum 1748 float flat; // normalized flat region size 1749 float fuzz; // normalized error tolerance 1750 float resolution; // normalized resolution in units/mm 1751 1752 float filter; // filter out small variations of this size 1753 float currentValue; // current value 1754 float newValue; // most recent value 1755 float highCurrentValue; // current value of high split 1756 float highNewValue; // most recent value of high split 1757 1758 void initialize(const RawAbsoluteAxisInfo& rawAxisInfo, const AxisInfo& axisInfo, 1759 bool explicitlyMapped, float scale, float offset, 1760 float highScale, float highOffset, 1761 float min, float max, float flat, float fuzz, float resolution) { 1762 this->rawAxisInfo = rawAxisInfo; 1763 this->axisInfo = axisInfo; 1764 this->explicitlyMapped = explicitlyMapped; 1765 this->scale = scale; 1766 this->offset = offset; 1767 this->highScale = highScale; 1768 this->highOffset = highOffset; 1769 this->min = min; 1770 this->max = max; 1771 this->flat = flat; 1772 this->fuzz = fuzz; 1773 this->resolution = resolution; 1774 this->filter = 0; 1775 resetValue(); 1776 } 1777 1778 void resetValue() { 1779 this->currentValue = 0; 1780 this->newValue = 0; 1781 this->highCurrentValue = 0; 1782 this->highNewValue = 0; 1783 } 1784 }; 1785 1786 // Axes indexed by raw ABS_* axis index. 1787 KeyedVector<int32_t, Axis> mAxes; 1788 1789 void sync(nsecs_t when, bool force); 1790 1791 bool haveAxis(int32_t axisId); 1792 void pruneAxes(bool ignoreExplicitlyMappedAxes); 1793 bool filterAxes(bool force); 1794 1795 static bool hasValueChangedSignificantly(float filter, 1796 float newValue, float currentValue, float min, float max); 1797 static bool hasMovedNearerToValueWithinFilteredRange(float filter, 1798 float newValue, float currentValue, float thresholdValue); 1799 1800 static bool isCenteredAxis(int32_t axis); 1801 static int32_t getCompatAxis(int32_t axis); 1802 1803 static void addMotionRange(int32_t axisId, const Axis& axis, InputDeviceInfo* info); 1804 static void setPointerCoordsAxisValue(PointerCoords* pointerCoords, int32_t axis, 1805 float value); 1806 }; 1807 1808 } // namespace android 1809 1810 #endif // _UI_INPUT_READER_H 1811
