/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef _UI_INPUT_READER_H #define _UI_INPUT_READER_H #include "EventHub.h" #include "PointerControllerInterface.h" #include "InputListener.h" #include #include #include #include #include #include #include #include #include #include #include #include // Maximum supported size of a vibration pattern. // Must be at least 2. #define MAX_VIBRATE_PATTERN_SIZE 100 // Maximum allowable delay value in a vibration pattern before // which the delay will be truncated. #define MAX_VIBRATE_PATTERN_DELAY_NSECS (1000000 * 1000000000LL) namespace android { class InputDevice; class InputMapper; /* * Describes how coordinates are mapped on a physical display. * See com.android.server.display.DisplayViewport. */ struct DisplayViewport { int32_t displayId; // -1 if invalid int32_t orientation; int32_t logicalLeft; int32_t logicalTop; int32_t logicalRight; int32_t logicalBottom; int32_t physicalLeft; int32_t physicalTop; int32_t physicalRight; int32_t physicalBottom; int32_t deviceWidth; int32_t deviceHeight; DisplayViewport() : displayId(ADISPLAY_ID_NONE), orientation(DISPLAY_ORIENTATION_0), logicalLeft(0), logicalTop(0), logicalRight(0), logicalBottom(0), physicalLeft(0), physicalTop(0), physicalRight(0), physicalBottom(0), deviceWidth(0), deviceHeight(0) { } bool operator==(const DisplayViewport& other) const { return displayId == other.displayId && orientation == other.orientation && logicalLeft == other.logicalLeft && logicalTop == other.logicalTop && logicalRight == other.logicalRight && logicalBottom == other.logicalBottom && physicalLeft == other.physicalLeft && physicalTop == other.physicalTop && physicalRight == other.physicalRight && physicalBottom == other.physicalBottom && deviceWidth == other.deviceWidth && deviceHeight == other.deviceHeight; } bool operator!=(const DisplayViewport& other) const { return !(*this == other); } inline bool isValid() const { return displayId >= 0; } void setNonDisplayViewport(int32_t width, int32_t height) { displayId = ADISPLAY_ID_NONE; orientation = DISPLAY_ORIENTATION_0; logicalLeft = 0; logicalTop = 0; logicalRight = width; logicalBottom = height; physicalLeft = 0; physicalTop = 0; physicalRight = width; physicalBottom = height; deviceWidth = width; deviceHeight = height; } }; /* * Input reader configuration. * * Specifies various options that modify the behavior of the input reader. */ struct InputReaderConfiguration { // Describes changes that have occurred. enum { // The pointer speed changed. CHANGE_POINTER_SPEED = 1 << 0, // The pointer gesture control changed. CHANGE_POINTER_GESTURE_ENABLEMENT = 1 << 1, // The display size or orientation changed. CHANGE_DISPLAY_INFO = 1 << 2, // The visible touches option changed. CHANGE_SHOW_TOUCHES = 1 << 3, // The keyboard layouts must be reloaded. CHANGE_KEYBOARD_LAYOUTS = 1 << 4, // The device name alias supplied by the may have changed for some devices. CHANGE_DEVICE_ALIAS = 1 << 5, // The location calibration matrix changed. CHANGE_TOUCH_AFFINE_TRANSFORMATION = 1 << 6, // The presence of an external stylus has changed. CHANGE_EXTERNAL_STYLUS_PRESENCE = 1 << 7, // All devices must be reopened. CHANGE_MUST_REOPEN = 1 << 31, }; // Gets the amount of time to disable virtual keys after the screen is touched // in order to filter out accidental virtual key presses due to swiping gestures // or taps near the edge of the display. May be 0 to disable the feature. nsecs_t virtualKeyQuietTime; // The excluded device names for the platform. // Devices with these names will be ignored. Vector excludedDeviceNames; // Velocity control parameters for mouse pointer movements. VelocityControlParameters pointerVelocityControlParameters; // Velocity control parameters for mouse wheel movements. VelocityControlParameters wheelVelocityControlParameters; // True if pointer gestures are enabled. bool pointerGesturesEnabled; // Quiet time between certain pointer gesture transitions. // Time to allow for all fingers or buttons to settle into a stable state before // starting a new gesture. nsecs_t pointerGestureQuietInterval; // The minimum speed that a pointer must travel for us to consider switching the active // touch pointer to it during a drag. This threshold is set to avoid switching due // to noise from a finger resting on the touch pad (perhaps just pressing it down). float pointerGestureDragMinSwitchSpeed; // in pixels per second // Tap gesture delay time. // The time between down and up must be less than this to be considered a tap. nsecs_t pointerGestureTapInterval; // Tap drag gesture delay time. // The time between the previous tap's up and the next down must be less than // this to be considered a drag. Otherwise, the previous tap is finished and a // new tap begins. // // Note that the previous tap will be held down for this entire duration so this // interval must be shorter than the long press timeout. nsecs_t pointerGestureTapDragInterval; // The distance in pixels that the pointer is allowed to move from initial down // to up and still be called a tap. float pointerGestureTapSlop; // in pixels // Time after the first touch points go down to settle on an initial centroid. // This is intended to be enough time to handle cases where the user puts down two // fingers at almost but not quite exactly the same time. nsecs_t pointerGestureMultitouchSettleInterval; // The transition from PRESS to SWIPE or FREEFORM gesture mode is made when // at least two pointers have moved at least this far from their starting place. float pointerGestureMultitouchMinDistance; // in pixels // The transition from PRESS to SWIPE gesture mode can only occur when the // cosine of the angle between the two vectors is greater than or equal to than this value // which indicates that the vectors are oriented in the same direction. // When the vectors are oriented in the exactly same direction, the cosine is 1.0. // (In exactly opposite directions, the cosine is -1.0.) float pointerGestureSwipeTransitionAngleCosine; // The transition from PRESS to SWIPE gesture mode can only occur when the // fingers are no more than this far apart relative to the diagonal size of // the touch pad. For example, a ratio of 0.5 means that the fingers must be // no more than half the diagonal size of the touch pad apart. float pointerGestureSwipeMaxWidthRatio; // The gesture movement speed factor relative to the size of the display. // Movement speed applies when the fingers are moving in the same direction. // Without acceleration, a full swipe of the touch pad diagonal in movement mode // will cover this portion of the display diagonal. float pointerGestureMovementSpeedRatio; // The gesture zoom speed factor relative to the size of the display. // Zoom speed applies when the fingers are mostly moving relative to each other // to execute a scale gesture or similar. // Without acceleration, a full swipe of the touch pad diagonal in zoom mode // will cover this portion of the display diagonal. float pointerGestureZoomSpeedRatio; // True to show the location of touches on the touch screen as spots. bool showTouches; InputReaderConfiguration() : virtualKeyQuietTime(0), pointerVelocityControlParameters(1.0f, 500.0f, 3000.0f, 3.0f), wheelVelocityControlParameters(1.0f, 15.0f, 50.0f, 4.0f), pointerGesturesEnabled(true), pointerGestureQuietInterval(100 * 1000000LL), // 100 ms pointerGestureDragMinSwitchSpeed(50), // 50 pixels per second pointerGestureTapInterval(150 * 1000000LL), // 150 ms pointerGestureTapDragInterval(150 * 1000000LL), // 150 ms pointerGestureTapSlop(10.0f), // 10 pixels pointerGestureMultitouchSettleInterval(100 * 1000000LL), // 100 ms pointerGestureMultitouchMinDistance(15), // 15 pixels pointerGestureSwipeTransitionAngleCosine(0.2588f), // cosine of 75 degrees pointerGestureSwipeMaxWidthRatio(0.25f), pointerGestureMovementSpeedRatio(0.8f), pointerGestureZoomSpeedRatio(0.3f), showTouches(false) { } bool getDisplayInfo(bool external, DisplayViewport* outViewport) const; void setDisplayInfo(bool external, const DisplayViewport& viewport); private: DisplayViewport mInternalDisplay; DisplayViewport mExternalDisplay; }; struct TouchAffineTransformation { float x_scale; float x_ymix; float x_offset; float y_xmix; float y_scale; float y_offset; TouchAffineTransformation() : x_scale(1.0f), x_ymix(0.0f), x_offset(0.0f), y_xmix(0.0f), y_scale(1.0f), y_offset(0.0f) { } TouchAffineTransformation(float xscale, float xymix, float xoffset, float yxmix, float yscale, float yoffset) : x_scale(xscale), x_ymix(xymix), x_offset(xoffset), y_xmix(yxmix), y_scale(yscale), y_offset(yoffset) { } void applyTo(float& x, float& y) const; }; /* * Input reader policy interface. * * The input reader policy is used by the input reader to interact with the Window Manager * and other system components. * * The actual implementation is partially supported by callbacks into the DVM * via JNI. This interface is also mocked in the unit tests. * * These methods must NOT re-enter the input reader since they may be called while * holding the input reader lock. */ class InputReaderPolicyInterface : public virtual RefBase { protected: InputReaderPolicyInterface() { } virtual ~InputReaderPolicyInterface() { } public: /* Gets the input reader configuration. */ virtual void getReaderConfiguration(InputReaderConfiguration* outConfig) = 0; /* Gets a pointer controller associated with the specified cursor device (ie. a mouse). */ virtual sp obtainPointerController(int32_t deviceId) = 0; /* Notifies the input reader policy that some input devices have changed * and provides information about all current input devices. */ virtual void notifyInputDevicesChanged(const Vector& inputDevices) = 0; /* Gets the keyboard layout for a particular input device. */ virtual sp getKeyboardLayoutOverlay( const InputDeviceIdentifier& identifier) = 0; /* Gets a user-supplied alias for a particular input device, or an empty string if none. */ virtual String8 getDeviceAlias(const InputDeviceIdentifier& identifier) = 0; /* Gets the affine calibration associated with the specified device. */ virtual TouchAffineTransformation getTouchAffineTransformation( const String8& inputDeviceDescriptor, int32_t surfaceRotation) = 0; }; /* Processes raw input events and sends cooked event data to an input listener. */ class InputReaderInterface : public virtual RefBase { protected: InputReaderInterface() { } virtual ~InputReaderInterface() { } public: /* Dumps the state of the input reader. * * This method may be called on any thread (usually by the input manager). */ virtual void dump(String8& dump) = 0; /* Called by the heatbeat to ensures that the reader has not deadlocked. */ virtual void monitor() = 0; /* Runs a single iteration of the processing loop. * Nominally reads and processes one incoming message from the EventHub. * * This method should be called on the input reader thread. */ virtual void loopOnce() = 0; /* Gets information about all input devices. * * This method may be called on any thread (usually by the input manager). */ virtual void getInputDevices(Vector& outInputDevices) = 0; /* Query current input state. */ virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, int32_t scanCode) = 0; virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, int32_t keyCode) = 0; virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t sw) = 0; /* Determine whether physical keys exist for the given framework-domain key codes. */ virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) = 0; /* Requests that a reconfiguration of all input devices. * The changes flag is a bitfield that indicates what has changed and whether * the input devices must all be reopened. */ virtual void requestRefreshConfiguration(uint32_t changes) = 0; /* Controls the vibrator of a particular input device. */ virtual void vibrate(int32_t deviceId, const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token) = 0; virtual void cancelVibrate(int32_t deviceId, int32_t token) = 0; }; struct StylusState { /* Time the stylus event was received. */ nsecs_t when; /* Pressure as reported by the stylus, normalized to the range [0, 1.0]. */ float pressure; /* The state of the stylus buttons as a bitfield (e.g. AMOTION_EVENT_BUTTON_SECONDARY). */ uint32_t buttons; /* Which tool type the stylus is currently using (e.g. AMOTION_EVENT_TOOL_TYPE_ERASER). */ int32_t toolType; void copyFrom(const StylusState& other) { when = other.when; pressure = other.pressure; buttons = other.buttons; toolType = other.toolType; } void clear() { when = LLONG_MAX; pressure = 0.f; buttons = 0; toolType = AMOTION_EVENT_TOOL_TYPE_UNKNOWN; } }; /* Internal interface used by individual input devices to access global input device state * and parameters maintained by the input reader. */ class InputReaderContext { public: InputReaderContext() { } virtual ~InputReaderContext() { } virtual void updateGlobalMetaState() = 0; virtual int32_t getGlobalMetaState() = 0; virtual void disableVirtualKeysUntil(nsecs_t time) = 0; virtual bool shouldDropVirtualKey(nsecs_t now, InputDevice* device, int32_t keyCode, int32_t scanCode) = 0; virtual void fadePointer() = 0; virtual void requestTimeoutAtTime(nsecs_t when) = 0; virtual int32_t bumpGeneration() = 0; virtual void getExternalStylusDevices(Vector& outDevices) = 0; virtual void dispatchExternalStylusState(const StylusState& outState) = 0; virtual InputReaderPolicyInterface* getPolicy() = 0; virtual InputListenerInterface* getListener() = 0; virtual EventHubInterface* getEventHub() = 0; }; /* The input reader reads raw event data from the event hub and processes it into input events * that it sends to the input listener. Some functions of the input reader, such as early * event filtering in low power states, are controlled by a separate policy object. * * The InputReader owns a collection of InputMappers. Most of the work it does happens * on the input reader thread but the InputReader can receive queries from other system * components running on arbitrary threads. To keep things manageable, the InputReader * uses a single Mutex to guard its state. The Mutex may be held while calling into the * EventHub or the InputReaderPolicy but it is never held while calling into the * InputListener. */ class InputReader : public InputReaderInterface { public: InputReader(const sp& eventHub, const sp& policy, const sp& listener); virtual ~InputReader(); virtual void dump(String8& dump); virtual void monitor(); virtual void loopOnce(); virtual void getInputDevices(Vector& outInputDevices); virtual int32_t getScanCodeState(int32_t deviceId, uint32_t sourceMask, int32_t scanCode); virtual int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, int32_t keyCode); virtual int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t sw); virtual bool hasKeys(int32_t deviceId, uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); virtual void requestRefreshConfiguration(uint32_t changes); virtual void vibrate(int32_t deviceId, const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token); virtual void cancelVibrate(int32_t deviceId, int32_t token); protected: // These members are protected so they can be instrumented by test cases. virtual InputDevice* createDeviceLocked(int32_t deviceId, int32_t controllerNumber, const InputDeviceIdentifier& identifier, uint32_t classes); class ContextImpl : public InputReaderContext { InputReader* mReader; public: ContextImpl(InputReader* reader); virtual void updateGlobalMetaState(); virtual int32_t getGlobalMetaState(); virtual void disableVirtualKeysUntil(nsecs_t time); virtual bool shouldDropVirtualKey(nsecs_t now, InputDevice* device, int32_t keyCode, int32_t scanCode); virtual void fadePointer(); virtual void requestTimeoutAtTime(nsecs_t when); virtual int32_t bumpGeneration(); virtual void getExternalStylusDevices(Vector& outDevices); virtual void dispatchExternalStylusState(const StylusState& outState); virtual InputReaderPolicyInterface* getPolicy(); virtual InputListenerInterface* getListener(); virtual EventHubInterface* getEventHub(); } mContext; friend class ContextImpl; private: Mutex mLock; Condition mReaderIsAliveCondition; sp mEventHub; sp mPolicy; sp mQueuedListener; InputReaderConfiguration mConfig; // The event queue. static const int EVENT_BUFFER_SIZE = 256; RawEvent mEventBuffer[EVENT_BUFFER_SIZE]; KeyedVector mDevices; // low-level input event decoding and device management void processEventsLocked(const RawEvent* rawEvents, size_t count); void addDeviceLocked(nsecs_t when, int32_t deviceId); void removeDeviceLocked(nsecs_t when, int32_t deviceId); void processEventsForDeviceLocked(int32_t deviceId, const RawEvent* rawEvents, size_t count); void timeoutExpiredLocked(nsecs_t when); void handleConfigurationChangedLocked(nsecs_t when); int32_t mGlobalMetaState; void updateGlobalMetaStateLocked(); int32_t getGlobalMetaStateLocked(); void notifyExternalStylusPresenceChanged(); void getExternalStylusDevicesLocked(Vector& outDevices); void dispatchExternalStylusState(const StylusState& state); void fadePointerLocked(); int32_t mGeneration; int32_t bumpGenerationLocked(); void getInputDevicesLocked(Vector& outInputDevices); nsecs_t mDisableVirtualKeysTimeout; void disableVirtualKeysUntilLocked(nsecs_t time); bool shouldDropVirtualKeyLocked(nsecs_t now, InputDevice* device, int32_t keyCode, int32_t scanCode); nsecs_t mNextTimeout; void requestTimeoutAtTimeLocked(nsecs_t when); uint32_t mConfigurationChangesToRefresh; void refreshConfigurationLocked(uint32_t changes); // state queries typedef int32_t (InputDevice::*GetStateFunc)(uint32_t sourceMask, int32_t code); int32_t getStateLocked(int32_t deviceId, uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc); bool markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); }; /* Reads raw events from the event hub and processes them, endlessly. */ class InputReaderThread : public Thread { public: InputReaderThread(const sp& reader); virtual ~InputReaderThread(); private: sp mReader; virtual bool threadLoop(); }; /* Represents the state of a single input device. */ class InputDevice { public: InputDevice(InputReaderContext* context, int32_t id, int32_t generation, int32_t controllerNumber, const InputDeviceIdentifier& identifier, uint32_t classes); ~InputDevice(); inline InputReaderContext* getContext() { return mContext; } inline int32_t getId() const { return mId; } inline int32_t getControllerNumber() const { return mControllerNumber; } inline int32_t getGeneration() const { return mGeneration; } inline const String8& getName() const { return mIdentifier.name; } inline const String8& getDescriptor() { return mIdentifier.descriptor; } inline uint32_t getClasses() const { return mClasses; } inline uint32_t getSources() const { return mSources; } inline bool isExternal() { return mIsExternal; } inline void setExternal(bool external) { mIsExternal = external; } inline void setMic(bool hasMic) { mHasMic = hasMic; } inline bool hasMic() const { return mHasMic; } inline bool isIgnored() { return mMappers.isEmpty(); } void dump(String8& dump); void addMapper(InputMapper* mapper); void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); void reset(nsecs_t when); void process(const RawEvent* rawEvents, size_t count); void timeoutExpired(nsecs_t when); void updateExternalStylusState(const StylusState& state); void getDeviceInfo(InputDeviceInfo* outDeviceInfo); int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token); void cancelVibrate(int32_t token); void cancelTouch(nsecs_t when); int32_t getMetaState(); void fadePointer(); void bumpGeneration(); void notifyReset(nsecs_t when); inline const PropertyMap& getConfiguration() { return mConfiguration; } inline EventHubInterface* getEventHub() { return mContext->getEventHub(); } bool hasKey(int32_t code) { return getEventHub()->hasScanCode(mId, code); } bool hasAbsoluteAxis(int32_t code) { RawAbsoluteAxisInfo info; getEventHub()->getAbsoluteAxisInfo(mId, code, &info); return info.valid; } bool isKeyPressed(int32_t code) { return getEventHub()->getScanCodeState(mId, code) == AKEY_STATE_DOWN; } int32_t getAbsoluteAxisValue(int32_t code) { int32_t value; getEventHub()->getAbsoluteAxisValue(mId, code, &value); return value; } private: InputReaderContext* mContext; int32_t mId; int32_t mGeneration; int32_t mControllerNumber; InputDeviceIdentifier mIdentifier; String8 mAlias; uint32_t mClasses; Vector mMappers; uint32_t mSources; bool mIsExternal; bool mHasMic; bool mDropUntilNextSync; typedef int32_t (InputMapper::*GetStateFunc)(uint32_t sourceMask, int32_t code); int32_t getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc); PropertyMap mConfiguration; }; /* Keeps track of the state of mouse or touch pad buttons. */ class CursorButtonAccumulator { public: CursorButtonAccumulator(); void reset(InputDevice* device); void process(const RawEvent* rawEvent); uint32_t getButtonState() const; private: bool mBtnLeft; bool mBtnRight; bool mBtnMiddle; bool mBtnBack; bool mBtnSide; bool mBtnForward; bool mBtnExtra; bool mBtnTask; void clearButtons(); }; /* Keeps track of cursor movements. */ class CursorMotionAccumulator { public: CursorMotionAccumulator(); void reset(InputDevice* device); void process(const RawEvent* rawEvent); void finishSync(); inline int32_t getRelativeX() const { return mRelX; } inline int32_t getRelativeY() const { return mRelY; } private: int32_t mRelX; int32_t mRelY; void clearRelativeAxes(); }; /* Keeps track of cursor scrolling motions. */ class CursorScrollAccumulator { public: CursorScrollAccumulator(); void configure(InputDevice* device); void reset(InputDevice* device); void process(const RawEvent* rawEvent); void finishSync(); inline bool haveRelativeVWheel() const { return mHaveRelWheel; } inline bool haveRelativeHWheel() const { return mHaveRelHWheel; } inline int32_t getRelativeX() const { return mRelX; } inline int32_t getRelativeY() const { return mRelY; } inline int32_t getRelativeVWheel() const { return mRelWheel; } inline int32_t getRelativeHWheel() const { return mRelHWheel; } private: bool mHaveRelWheel; bool mHaveRelHWheel; int32_t mRelX; int32_t mRelY; int32_t mRelWheel; int32_t mRelHWheel; void clearRelativeAxes(); }; /* Keeps track of the state of touch, stylus and tool buttons. */ class TouchButtonAccumulator { public: TouchButtonAccumulator(); void configure(InputDevice* device); void reset(InputDevice* device); void process(const RawEvent* rawEvent); uint32_t getButtonState() const; int32_t getToolType() const; bool isToolActive() const; bool isHovering() const; bool hasStylus() const; private: bool mHaveBtnTouch; bool mHaveStylus; bool mBtnTouch; bool mBtnStylus; bool mBtnStylus2; bool mBtnToolFinger; bool mBtnToolPen; bool mBtnToolRubber; bool mBtnToolBrush; bool mBtnToolPencil; bool mBtnToolAirbrush; bool mBtnToolMouse; bool mBtnToolLens; bool mBtnToolDoubleTap; bool mBtnToolTripleTap; bool mBtnToolQuadTap; void clearButtons(); }; /* Raw axis information from the driver. */ struct RawPointerAxes { RawAbsoluteAxisInfo x; RawAbsoluteAxisInfo y; RawAbsoluteAxisInfo pressure; RawAbsoluteAxisInfo touchMajor; RawAbsoluteAxisInfo touchMinor; RawAbsoluteAxisInfo toolMajor; RawAbsoluteAxisInfo toolMinor; RawAbsoluteAxisInfo orientation; RawAbsoluteAxisInfo distance; RawAbsoluteAxisInfo tiltX; RawAbsoluteAxisInfo tiltY; RawAbsoluteAxisInfo trackingId; RawAbsoluteAxisInfo slot; RawPointerAxes(); void clear(); }; /* Raw data for a collection of pointers including a pointer id mapping table. */ struct RawPointerData { struct Pointer { uint32_t id; int32_t x; int32_t y; int32_t pressure; int32_t touchMajor; int32_t touchMinor; int32_t toolMajor; int32_t toolMinor; int32_t orientation; int32_t distance; int32_t tiltX; int32_t tiltY; int32_t toolType; // a fully decoded AMOTION_EVENT_TOOL_TYPE constant bool isHovering; }; uint32_t pointerCount; Pointer pointers[MAX_POINTERS]; BitSet32 hoveringIdBits, touchingIdBits; uint32_t idToIndex[MAX_POINTER_ID + 1]; RawPointerData(); void clear(); void copyFrom(const RawPointerData& other); void getCentroidOfTouchingPointers(float* outX, float* outY) const; inline void markIdBit(uint32_t id, bool isHovering) { if (isHovering) { hoveringIdBits.markBit(id); } else { touchingIdBits.markBit(id); } } inline void clearIdBits() { hoveringIdBits.clear(); touchingIdBits.clear(); } inline const Pointer& pointerForId(uint32_t id) const { return pointers[idToIndex[id]]; } inline bool isHovering(uint32_t pointerIndex) { return pointers[pointerIndex].isHovering; } }; /* Cooked data for a collection of pointers including a pointer id mapping table. */ struct CookedPointerData { uint32_t pointerCount; PointerProperties pointerProperties[MAX_POINTERS]; PointerCoords pointerCoords[MAX_POINTERS]; BitSet32 hoveringIdBits, touchingIdBits; uint32_t idToIndex[MAX_POINTER_ID + 1]; CookedPointerData(); void clear(); void copyFrom(const CookedPointerData& other); inline const PointerCoords& pointerCoordsForId(uint32_t id) const { return pointerCoords[idToIndex[id]]; } inline PointerCoords& editPointerCoordsWithId(uint32_t id) { return pointerCoords[idToIndex[id]]; } inline PointerProperties& editPointerPropertiesWithId(uint32_t id) { return pointerProperties[idToIndex[id]]; } inline bool isHovering(uint32_t pointerIndex) const { return hoveringIdBits.hasBit(pointerProperties[pointerIndex].id); } inline bool isTouching(uint32_t pointerIndex) const { return touchingIdBits.hasBit(pointerProperties[pointerIndex].id); } }; /* Keeps track of the state of single-touch protocol. */ class SingleTouchMotionAccumulator { public: SingleTouchMotionAccumulator(); void process(const RawEvent* rawEvent); void reset(InputDevice* device); inline int32_t getAbsoluteX() const { return mAbsX; } inline int32_t getAbsoluteY() const { return mAbsY; } inline int32_t getAbsolutePressure() const { return mAbsPressure; } inline int32_t getAbsoluteToolWidth() const { return mAbsToolWidth; } inline int32_t getAbsoluteDistance() const { return mAbsDistance; } inline int32_t getAbsoluteTiltX() const { return mAbsTiltX; } inline int32_t getAbsoluteTiltY() const { return mAbsTiltY; } private: int32_t mAbsX; int32_t mAbsY; int32_t mAbsPressure; int32_t mAbsToolWidth; int32_t mAbsDistance; int32_t mAbsTiltX; int32_t mAbsTiltY; void clearAbsoluteAxes(); }; /* Keeps track of the state of multi-touch protocol. */ class MultiTouchMotionAccumulator { public: class Slot { public: inline bool isInUse() const { return mInUse; } inline int32_t getX() const { return mAbsMTPositionX; } inline int32_t getY() const { return mAbsMTPositionY; } inline int32_t getTouchMajor() const { return mAbsMTTouchMajor; } inline int32_t getTouchMinor() const { return mHaveAbsMTTouchMinor ? mAbsMTTouchMinor : mAbsMTTouchMajor; } inline int32_t getToolMajor() const { return mAbsMTWidthMajor; } inline int32_t getToolMinor() const { return mHaveAbsMTWidthMinor ? mAbsMTWidthMinor : mAbsMTWidthMajor; } inline int32_t getOrientation() const { return mAbsMTOrientation; } inline int32_t getTrackingId() const { return mAbsMTTrackingId; } inline int32_t getPressure() const { return mAbsMTPressure; } inline int32_t getDistance() const { return mAbsMTDistance; } inline int32_t getToolType() const; private: friend class MultiTouchMotionAccumulator; bool mInUse; bool mHaveAbsMTTouchMinor; bool mHaveAbsMTWidthMinor; bool mHaveAbsMTToolType; int32_t mAbsMTPositionX; int32_t mAbsMTPositionY; int32_t mAbsMTTouchMajor; int32_t mAbsMTTouchMinor; int32_t mAbsMTWidthMajor; int32_t mAbsMTWidthMinor; int32_t mAbsMTOrientation; int32_t mAbsMTTrackingId; int32_t mAbsMTPressure; int32_t mAbsMTDistance; int32_t mAbsMTToolType; Slot(); void clear(); }; MultiTouchMotionAccumulator(); ~MultiTouchMotionAccumulator(); void configure(InputDevice* device, size_t slotCount, bool usingSlotsProtocol); void reset(InputDevice* device); void process(const RawEvent* rawEvent); void finishSync(); bool hasStylus() const; inline size_t getSlotCount() const { return mSlotCount; } inline const Slot* getSlot(size_t index) const { return &mSlots[index]; } private: int32_t mCurrentSlot; Slot* mSlots; size_t mSlotCount; bool mUsingSlotsProtocol; bool mHaveStylus; void clearSlots(int32_t initialSlot); }; /* An input mapper transforms raw input events into cooked event data. * A single input device can have multiple associated input mappers in order to interpret * different classes of events. * * InputMapper lifecycle: * - create * - configure with 0 changes * - reset * - process, process, process (may occasionally reconfigure with non-zero changes or reset) * - reset * - destroy */ class InputMapper { public: InputMapper(InputDevice* device); virtual ~InputMapper(); inline InputDevice* getDevice() { return mDevice; } inline int32_t getDeviceId() { return mDevice->getId(); } inline const String8 getDeviceName() { return mDevice->getName(); } inline InputReaderContext* getContext() { return mContext; } inline InputReaderPolicyInterface* getPolicy() { return mContext->getPolicy(); } inline InputListenerInterface* getListener() { return mContext->getListener(); } inline EventHubInterface* getEventHub() { return mContext->getEventHub(); } virtual uint32_t getSources() = 0; virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent) = 0; virtual void timeoutExpired(nsecs_t when); virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); virtual void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token); virtual void cancelVibrate(int32_t token); virtual void cancelTouch(nsecs_t when); virtual int32_t getMetaState(); virtual void updateExternalStylusState(const StylusState& state); virtual void fadePointer(); protected: InputDevice* mDevice; InputReaderContext* mContext; status_t getAbsoluteAxisInfo(int32_t axis, RawAbsoluteAxisInfo* axisInfo); void bumpGeneration(); static void dumpRawAbsoluteAxisInfo(String8& dump, const RawAbsoluteAxisInfo& axis, const char* name); static void dumpStylusState(String8& dump, const StylusState& state); }; class SwitchInputMapper : public InputMapper { public: SwitchInputMapper(InputDevice* device); virtual ~SwitchInputMapper(); virtual uint32_t getSources(); virtual void process(const RawEvent* rawEvent); virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode); virtual void dump(String8& dump); private: uint32_t mSwitchValues; uint32_t mUpdatedSwitchMask; void processSwitch(int32_t switchCode, int32_t switchValue); void sync(nsecs_t when); }; class VibratorInputMapper : public InputMapper { public: VibratorInputMapper(InputDevice* device); virtual ~VibratorInputMapper(); virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void process(const RawEvent* rawEvent); virtual void vibrate(const nsecs_t* pattern, size_t patternSize, ssize_t repeat, int32_t token); virtual void cancelVibrate(int32_t token); virtual void timeoutExpired(nsecs_t when); virtual void dump(String8& dump); private: bool mVibrating; nsecs_t mPattern[MAX_VIBRATE_PATTERN_SIZE]; size_t mPatternSize; ssize_t mRepeat; int32_t mToken; ssize_t mIndex; nsecs_t mNextStepTime; void nextStep(); void stopVibrating(); }; class KeyboardInputMapper : public InputMapper { public: KeyboardInputMapper(InputDevice* device, uint32_t source, int32_t keyboardType); virtual ~KeyboardInputMapper(); virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); virtual int32_t getMetaState(); private: struct KeyDown { int32_t keyCode; int32_t scanCode; }; uint32_t mSource; int32_t mKeyboardType; int32_t mOrientation; // orientation for dpad keys Vector mKeyDowns; // keys that are down int32_t mMetaState; nsecs_t mDownTime; // time of most recent key down int32_t mCurrentHidUsage; // most recent HID usage seen this packet, or 0 if none struct LedState { bool avail; // led is available bool on; // we think the led is currently on }; LedState mCapsLockLedState; LedState mNumLockLedState; LedState mScrollLockLedState; // Immutable configuration parameters. struct Parameters { bool hasAssociatedDisplay; bool orientationAware; bool handlesKeyRepeat; } mParameters; void configureParameters(); void dumpParameters(String8& dump); bool isKeyboardOrGamepadKey(int32_t scanCode); void processKey(nsecs_t when, bool down, int32_t keyCode, int32_t scanCode, uint32_t policyFlags); ssize_t findKeyDown(int32_t scanCode); void resetLedState(); void initializeLedState(LedState& ledState, int32_t led); void updateLedState(bool reset); void updateLedStateForModifier(LedState& ledState, int32_t led, int32_t modifier, bool reset); }; class CursorInputMapper : public InputMapper { public: CursorInputMapper(InputDevice* device); virtual ~CursorInputMapper(); virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); virtual void fadePointer(); private: // Amount that trackball needs to move in order to generate a key event. static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6; // Immutable configuration parameters. struct Parameters { enum Mode { MODE_POINTER, MODE_NAVIGATION, }; Mode mode; bool hasAssociatedDisplay; bool orientationAware; } mParameters; CursorButtonAccumulator mCursorButtonAccumulator; CursorMotionAccumulator mCursorMotionAccumulator; CursorScrollAccumulator mCursorScrollAccumulator; int32_t mSource; float mXScale; float mYScale; float mXPrecision; float mYPrecision; float mVWheelScale; float mHWheelScale; // Velocity controls for mouse pointer and wheel movements. // The controls for X and Y wheel movements are separate to keep them decoupled. VelocityControl mPointerVelocityControl; VelocityControl mWheelXVelocityControl; VelocityControl mWheelYVelocityControl; int32_t mOrientation; sp mPointerController; int32_t mButtonState; nsecs_t mDownTime; void configureParameters(); void dumpParameters(String8& dump); void sync(nsecs_t when); }; class TouchInputMapper : public InputMapper { public: TouchInputMapper(InputDevice* device); virtual ~TouchInputMapper(); virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode); virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode); virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags); virtual void fadePointer(); virtual void cancelTouch(nsecs_t when); virtual void timeoutExpired(nsecs_t when); virtual void updateExternalStylusState(const StylusState& state); protected: CursorButtonAccumulator mCursorButtonAccumulator; CursorScrollAccumulator mCursorScrollAccumulator; TouchButtonAccumulator mTouchButtonAccumulator; struct VirtualKey { int32_t keyCode; int32_t scanCode; uint32_t flags; // computed hit box, specified in touch screen coords based on known display size int32_t hitLeft; int32_t hitTop; int32_t hitRight; int32_t hitBottom; inline bool isHit(int32_t x, int32_t y) const { return x >= hitLeft && x <= hitRight && y >= hitTop && y <= hitBottom; } }; // Input sources and device mode. uint32_t mSource; enum DeviceMode { DEVICE_MODE_DISABLED, // input is disabled DEVICE_MODE_DIRECT, // direct mapping (touchscreen) DEVICE_MODE_UNSCALED, // unscaled mapping (touchpad) DEVICE_MODE_NAVIGATION, // unscaled mapping with assist gesture (touch navigation) DEVICE_MODE_POINTER, // pointer mapping (pointer) }; DeviceMode mDeviceMode; // The reader's configuration. InputReaderConfiguration mConfig; // Immutable configuration parameters. struct Parameters { enum DeviceType { DEVICE_TYPE_TOUCH_SCREEN, DEVICE_TYPE_TOUCH_PAD, DEVICE_TYPE_TOUCH_NAVIGATION, DEVICE_TYPE_POINTER, }; DeviceType deviceType; bool hasAssociatedDisplay; bool associatedDisplayIsExternal; bool orientationAware; bool hasButtonUnderPad; enum GestureMode { GESTURE_MODE_POINTER, GESTURE_MODE_SPOTS, }; GestureMode gestureMode; bool wake; } mParameters; // Immutable calibration parameters in parsed form. struct Calibration { // Size enum SizeCalibration { SIZE_CALIBRATION_DEFAULT, SIZE_CALIBRATION_NONE, SIZE_CALIBRATION_GEOMETRIC, SIZE_CALIBRATION_DIAMETER, SIZE_CALIBRATION_BOX, SIZE_CALIBRATION_AREA, }; SizeCalibration sizeCalibration; bool haveSizeScale; float sizeScale; bool haveSizeBias; float sizeBias; bool haveSizeIsSummed; bool sizeIsSummed; // Pressure enum PressureCalibration { PRESSURE_CALIBRATION_DEFAULT, PRESSURE_CALIBRATION_NONE, PRESSURE_CALIBRATION_PHYSICAL, PRESSURE_CALIBRATION_AMPLITUDE, }; PressureCalibration pressureCalibration; bool havePressureScale; float pressureScale; // Orientation enum OrientationCalibration { ORIENTATION_CALIBRATION_DEFAULT, ORIENTATION_CALIBRATION_NONE, ORIENTATION_CALIBRATION_INTERPOLATED, ORIENTATION_CALIBRATION_VECTOR, }; OrientationCalibration orientationCalibration; // Distance enum DistanceCalibration { DISTANCE_CALIBRATION_DEFAULT, DISTANCE_CALIBRATION_NONE, DISTANCE_CALIBRATION_SCALED, }; DistanceCalibration distanceCalibration; bool haveDistanceScale; float distanceScale; enum CoverageCalibration { COVERAGE_CALIBRATION_DEFAULT, COVERAGE_CALIBRATION_NONE, COVERAGE_CALIBRATION_BOX, }; CoverageCalibration coverageCalibration; inline void applySizeScaleAndBias(float* outSize) const { if (haveSizeScale) { *outSize *= sizeScale; } if (haveSizeBias) { *outSize += sizeBias; } if (*outSize < 0) { *outSize = 0; } } } mCalibration; // Affine location transformation/calibration struct TouchAffineTransformation mAffineTransform; RawPointerAxes mRawPointerAxes; struct RawState { nsecs_t when; // Raw pointer sample data. RawPointerData rawPointerData; int32_t buttonState; // Scroll state. int32_t rawVScroll; int32_t rawHScroll; void copyFrom(const RawState& other) { when = other.when; rawPointerData.copyFrom(other.rawPointerData); buttonState = other.buttonState; rawVScroll = other.rawVScroll; rawHScroll = other.rawHScroll; } void clear() { when = 0; rawPointerData.clear(); buttonState = 0; rawVScroll = 0; rawHScroll = 0; } }; struct CookedState { // Cooked pointer sample data. CookedPointerData cookedPointerData; // Id bits used to differentiate fingers, stylus and mouse tools. BitSet32 fingerIdBits; BitSet32 stylusIdBits; BitSet32 mouseIdBits; void copyFrom(const CookedState& other) { cookedPointerData.copyFrom(other.cookedPointerData); fingerIdBits = other.fingerIdBits; stylusIdBits = other.stylusIdBits; mouseIdBits = other.mouseIdBits; } void clear() { cookedPointerData.clear(); fingerIdBits.clear(); stylusIdBits.clear(); mouseIdBits.clear(); } }; Vector mRawStatesPending; RawState mCurrentRawState; CookedState mCurrentCookedState; RawState mLastRawState; CookedState mLastCookedState; // State provided by an external stylus StylusState mExternalStylusState; int64_t mExternalStylusId; nsecs_t mExternalStylusFusionTimeout; bool mExternalStylusDataPending; // True if we sent a HOVER_ENTER event. bool mSentHoverEnter; // Have we assigned pointer IDs for this stream bool mHavePointerIds; // The time the primary pointer last went down. nsecs_t mDownTime; // The pointer controller, or null if the device is not a pointer. sp mPointerController; Vector mVirtualKeys; virtual void configureParameters(); virtual void dumpParameters(String8& dump); virtual void configureRawPointerAxes(); virtual void dumpRawPointerAxes(String8& dump); virtual void configureSurface(nsecs_t when, bool* outResetNeeded); virtual void dumpSurface(String8& dump); virtual void configureVirtualKeys(); virtual void dumpVirtualKeys(String8& dump); virtual void parseCalibration(); virtual void resolveCalibration(); virtual void dumpCalibration(String8& dump); virtual void updateAffineTransformation(); virtual void dumpAffineTransformation(String8& dump); virtual void resolveExternalStylusPresence(); virtual bool hasStylus() const = 0; virtual bool hasExternalStylus() const; virtual void syncTouch(nsecs_t when, RawState* outState) = 0; private: // The current viewport. // The components of the viewport are specified in the display's rotated orientation. DisplayViewport mViewport; // The surface orientation, width and height set by configureSurface(). // The width and height are derived from the viewport but are specified // in the natural orientation. // The surface origin specifies how the surface coordinates should be translated // to align with the logical display coordinate space. // The orientation may be different from the viewport orientation as it specifies // the rotation of the surface coordinates required to produce the viewport's // requested orientation, so it will depend on whether the device is orientation aware. int32_t mSurfaceWidth; int32_t mSurfaceHeight; int32_t mSurfaceLeft; int32_t mSurfaceTop; int32_t mSurfaceOrientation; // Translation and scaling factors, orientation-independent. float mXTranslate; float mXScale; float mXPrecision; float mYTranslate; float mYScale; float mYPrecision; float mGeometricScale; float mPressureScale; float mSizeScale; float mOrientationScale; float mDistanceScale; bool mHaveTilt; float mTiltXCenter; float mTiltXScale; float mTiltYCenter; float mTiltYScale; bool mExternalStylusConnected; // Oriented motion ranges for input device info. struct OrientedRanges { InputDeviceInfo::MotionRange x; InputDeviceInfo::MotionRange y; InputDeviceInfo::MotionRange pressure; bool haveSize; InputDeviceInfo::MotionRange size; bool haveTouchSize; InputDeviceInfo::MotionRange touchMajor; InputDeviceInfo::MotionRange touchMinor; bool haveToolSize; InputDeviceInfo::MotionRange toolMajor; InputDeviceInfo::MotionRange toolMinor; bool haveOrientation; InputDeviceInfo::MotionRange orientation; bool haveDistance; InputDeviceInfo::MotionRange distance; bool haveTilt; InputDeviceInfo::MotionRange tilt; OrientedRanges() { clear(); } void clear() { haveSize = false; haveTouchSize = false; haveToolSize = false; haveOrientation = false; haveDistance = false; haveTilt = false; } } mOrientedRanges; // Oriented dimensions and precision. float mOrientedXPrecision; float mOrientedYPrecision; struct CurrentVirtualKeyState { bool down; bool ignored; nsecs_t downTime; int32_t keyCode; int32_t scanCode; } mCurrentVirtualKey; // Scale factor for gesture or mouse based pointer movements. float mPointerXMovementScale; float mPointerYMovementScale; // Scale factor for gesture based zooming and other freeform motions. float mPointerXZoomScale; float mPointerYZoomScale; // The maximum swipe width. float mPointerGestureMaxSwipeWidth; struct PointerDistanceHeapElement { uint32_t currentPointerIndex : 8; uint32_t lastPointerIndex : 8; uint64_t distance : 48; // squared distance }; enum PointerUsage { POINTER_USAGE_NONE, POINTER_USAGE_GESTURES, POINTER_USAGE_STYLUS, POINTER_USAGE_MOUSE, }; PointerUsage mPointerUsage; struct PointerGesture { enum Mode { // No fingers, button is not pressed. // Nothing happening. NEUTRAL, // No fingers, button is not pressed. // Tap detected. // Emits DOWN and UP events at the pointer location. TAP, // Exactly one finger dragging following a tap. // Pointer follows the active finger. // Emits DOWN, MOVE and UP events at the pointer location. // // Detect double-taps when the finger goes up while in TAP_DRAG mode. TAP_DRAG, // Button is pressed. // Pointer follows the active finger if there is one. Other fingers are ignored. // Emits DOWN, MOVE and UP events at the pointer location. BUTTON_CLICK_OR_DRAG, // Exactly one finger, button is not pressed. // Pointer follows the active finger. // Emits HOVER_MOVE events at the pointer location. // // Detect taps when the finger goes up while in HOVER mode. HOVER, // Exactly two fingers but neither have moved enough to clearly indicate // whether a swipe or freeform gesture was intended. We consider the // pointer to be pressed so this enables clicking or long-pressing on buttons. // Pointer does not move. // Emits DOWN, MOVE and UP events with a single stationary pointer coordinate. PRESS, // Exactly two fingers moving in the same direction, button is not pressed. // Pointer does not move. // Emits DOWN, MOVE and UP events with a single pointer coordinate that // follows the midpoint between both fingers. SWIPE, // Two or more fingers moving in arbitrary directions, button is not pressed. // Pointer does not move. // Emits DOWN, POINTER_DOWN, MOVE, POINTER_UP and UP events that follow // each finger individually relative to the initial centroid of the finger. FREEFORM, // Waiting for quiet time to end before starting the next gesture. QUIET, }; // Time the first finger went down. nsecs_t firstTouchTime; // The active pointer id from the raw touch data. int32_t activeTouchId; // -1 if none // The active pointer id from the gesture last delivered to the application. int32_t activeGestureId; // -1 if none // Pointer coords and ids for the current and previous pointer gesture. Mode currentGestureMode; BitSet32 currentGestureIdBits; uint32_t currentGestureIdToIndex[MAX_POINTER_ID + 1]; PointerProperties currentGestureProperties[MAX_POINTERS]; PointerCoords currentGestureCoords[MAX_POINTERS]; Mode lastGestureMode; BitSet32 lastGestureIdBits; uint32_t lastGestureIdToIndex[MAX_POINTER_ID + 1]; PointerProperties lastGestureProperties[MAX_POINTERS]; PointerCoords lastGestureCoords[MAX_POINTERS]; // Time the pointer gesture last went down. nsecs_t downTime; // Time when the pointer went down for a TAP. nsecs_t tapDownTime; // Time when the pointer went up for a TAP. nsecs_t tapUpTime; // Location of initial tap. float tapX, tapY; // Time we started waiting for quiescence. nsecs_t quietTime; // Reference points for multitouch gestures. float referenceTouchX; // reference touch X/Y coordinates in surface units float referenceTouchY; float referenceGestureX; // reference gesture X/Y coordinates in pixels float referenceGestureY; // Distance that each pointer has traveled which has not yet been // subsumed into the reference gesture position. BitSet32 referenceIdBits; struct Delta { float dx, dy; }; Delta referenceDeltas[MAX_POINTER_ID + 1]; // Describes how touch ids are mapped to gesture ids for freeform gestures. uint32_t freeformTouchToGestureIdMap[MAX_POINTER_ID + 1]; // A velocity tracker for determining whether to switch active pointers during drags. VelocityTracker velocityTracker; void reset() { firstTouchTime = LLONG_MIN; activeTouchId = -1; activeGestureId = -1; currentGestureMode = NEUTRAL; currentGestureIdBits.clear(); lastGestureMode = NEUTRAL; lastGestureIdBits.clear(); downTime = 0; velocityTracker.clear(); resetTap(); resetQuietTime(); } void resetTap() { tapDownTime = LLONG_MIN; tapUpTime = LLONG_MIN; } void resetQuietTime() { quietTime = LLONG_MIN; } } mPointerGesture; struct PointerSimple { PointerCoords currentCoords; PointerProperties currentProperties; PointerCoords lastCoords; PointerProperties lastProperties; // True if the pointer is down. bool down; // True if the pointer is hovering. bool hovering; // Time the pointer last went down. nsecs_t downTime; void reset() { currentCoords.clear(); currentProperties.clear(); lastCoords.clear(); lastProperties.clear(); down = false; hovering = false; downTime = 0; } } mPointerSimple; // The pointer and scroll velocity controls. VelocityControl mPointerVelocityControl; VelocityControl mWheelXVelocityControl; VelocityControl mWheelYVelocityControl; void resetExternalStylus(); void clearStylusDataPendingFlags(); void sync(nsecs_t when); bool consumeRawTouches(nsecs_t when, uint32_t policyFlags); void processRawTouches(bool timeout); void cookAndDispatch(nsecs_t when); void dispatchVirtualKey(nsecs_t when, uint32_t policyFlags, int32_t keyEventAction, int32_t keyEventFlags); void dispatchTouches(nsecs_t when, uint32_t policyFlags); void dispatchHoverExit(nsecs_t when, uint32_t policyFlags); void dispatchHoverEnterAndMove(nsecs_t when, uint32_t policyFlags); void cookPointerData(); void dispatchPointerUsage(nsecs_t when, uint32_t policyFlags, PointerUsage pointerUsage); void abortPointerUsage(nsecs_t when, uint32_t policyFlags); void dispatchPointerGestures(nsecs_t when, uint32_t policyFlags, bool isTimeout); void abortPointerGestures(nsecs_t when, uint32_t policyFlags); bool preparePointerGestures(nsecs_t when, bool* outCancelPreviousGesture, bool* outFinishPreviousGesture, bool isTimeout); void dispatchPointerStylus(nsecs_t when, uint32_t policyFlags); void abortPointerStylus(nsecs_t when, uint32_t policyFlags); void dispatchPointerMouse(nsecs_t when, uint32_t policyFlags); void abortPointerMouse(nsecs_t when, uint32_t policyFlags); void dispatchPointerSimple(nsecs_t when, uint32_t policyFlags, bool down, bool hovering); void abortPointerSimple(nsecs_t when, uint32_t policyFlags); bool assignExternalStylusId(const RawState& state, bool timeout); void applyExternalStylusButtonState(nsecs_t when); void applyExternalStylusTouchState(nsecs_t when); // Dispatches a motion event. // If the changedId is >= 0 and the action is POINTER_DOWN or POINTER_UP, the // method will take care of setting the index and transmuting the action to DOWN or UP // it is the first / last pointer to go down / up. void dispatchMotion(nsecs_t when, uint32_t policyFlags, uint32_t source, int32_t action, int32_t flags, int32_t metaState, int32_t buttonState, int32_t edgeFlags, const PointerProperties* properties, const PointerCoords* coords, const uint32_t* idToIndex, BitSet32 idBits, int32_t changedId, float xPrecision, float yPrecision, nsecs_t downTime); // Updates pointer coords and properties for pointers with specified ids that have moved. // Returns true if any of them changed. bool updateMovedPointers(const PointerProperties* inProperties, const PointerCoords* inCoords, const uint32_t* inIdToIndex, PointerProperties* outProperties, PointerCoords* outCoords, const uint32_t* outIdToIndex, BitSet32 idBits) const; bool isPointInsideSurface(int32_t x, int32_t y); const VirtualKey* findVirtualKeyHit(int32_t x, int32_t y); static void assignPointerIds(const RawState* last, RawState* current); }; class SingleTouchInputMapper : public TouchInputMapper { public: SingleTouchInputMapper(InputDevice* device); virtual ~SingleTouchInputMapper(); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); protected: virtual void syncTouch(nsecs_t when, RawState* outState); virtual void configureRawPointerAxes(); virtual bool hasStylus() const; private: SingleTouchMotionAccumulator mSingleTouchMotionAccumulator; }; class MultiTouchInputMapper : public TouchInputMapper { public: MultiTouchInputMapper(InputDevice* device); virtual ~MultiTouchInputMapper(); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); protected: virtual void syncTouch(nsecs_t when, RawState* outState); virtual void configureRawPointerAxes(); virtual bool hasStylus() const; private: MultiTouchMotionAccumulator mMultiTouchMotionAccumulator; // Specifies the pointer id bits that are in use, and their associated tracking id. BitSet32 mPointerIdBits; int32_t mPointerTrackingIdMap[MAX_POINTER_ID + 1]; }; class ExternalStylusInputMapper : public InputMapper { public: ExternalStylusInputMapper(InputDevice* device); virtual ~ExternalStylusInputMapper() = default; virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); virtual void sync(nsecs_t when); private: SingleTouchMotionAccumulator mSingleTouchMotionAccumulator; RawAbsoluteAxisInfo mRawPressureAxis; TouchButtonAccumulator mTouchButtonAccumulator; StylusState mStylusState; }; class JoystickInputMapper : public InputMapper { public: JoystickInputMapper(InputDevice* device); virtual ~JoystickInputMapper(); virtual uint32_t getSources(); virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo); virtual void dump(String8& dump); virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes); virtual void reset(nsecs_t when); virtual void process(const RawEvent* rawEvent); private: struct Axis { RawAbsoluteAxisInfo rawAxisInfo; AxisInfo axisInfo; bool explicitlyMapped; // true if the axis was explicitly assigned an axis id float scale; // scale factor from raw to normalized values float offset; // offset to add after scaling for normalization float highScale; // scale factor from raw to normalized values of high split float highOffset; // offset to add after scaling for normalization of high split float min; // normalized inclusive minimum float max; // normalized inclusive maximum float flat; // normalized flat region size float fuzz; // normalized error tolerance float resolution; // normalized resolution in units/mm float filter; // filter out small variations of this size float currentValue; // current value float newValue; // most recent value float highCurrentValue; // current value of high split float highNewValue; // most recent value of high split void initialize(const RawAbsoluteAxisInfo& rawAxisInfo, const AxisInfo& axisInfo, bool explicitlyMapped, float scale, float offset, float highScale, float highOffset, float min, float max, float flat, float fuzz, float resolution) { this->rawAxisInfo = rawAxisInfo; this->axisInfo = axisInfo; this->explicitlyMapped = explicitlyMapped; this->scale = scale; this->offset = offset; this->highScale = highScale; this->highOffset = highOffset; this->min = min; this->max = max; this->flat = flat; this->fuzz = fuzz; this->resolution = resolution; this->filter = 0; resetValue(); } void resetValue() { this->currentValue = 0; this->newValue = 0; this->highCurrentValue = 0; this->highNewValue = 0; } }; // Axes indexed by raw ABS_* axis index. KeyedVector mAxes; void sync(nsecs_t when, bool force); bool haveAxis(int32_t axisId); void pruneAxes(bool ignoreExplicitlyMappedAxes); bool filterAxes(bool force); static bool hasValueChangedSignificantly(float filter, float newValue, float currentValue, float min, float max); static bool hasMovedNearerToValueWithinFilteredRange(float filter, float newValue, float currentValue, float thresholdValue); static bool isCenteredAxis(int32_t axis); static int32_t getCompatAxis(int32_t axis); static void addMotionRange(int32_t axisId, const Axis& axis, InputDeviceInfo* info); static void setPointerCoordsAxisValue(PointerCoords* pointerCoords, int32_t axis, float value); }; } // namespace android #endif // _UI_INPUT_READER_H