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replicant-frameworks_native/services/inputflinger/InputReader.h
Michael Wright d02c5b6aac Move inputservice over to frameworks/native 
Add all of the underlying input system pieces, minux PointerController and
SpriteController, to inputflinger. This is in preparation for moving input to
its own process and the addition of the input HAL.

Try 2.

Change-Id: I5f571fe86eb570885ae994e1f0552fb558930346
2014-02-11 10:47:14 -08:00

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/*
* 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 <input/Input.h>
#include <input/VelocityControl.h>
#include <input/VelocityTracker.h>
#include <ui/DisplayInfo.h>
#include <utils/KeyedVector.h>
#include <utils/threads.h>
#include <utils/Timers.h>
#include <utils/RefBase.h>
#include <utils/String8.h>
#include <utils/BitSet.h>
#include <stddef.h>
#include <unistd.h>
// 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,
// 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<String8> 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;
};
/*
* 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<PointerControllerInterface> 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<InputDeviceInfo>& inputDevices) = 0;
/* Gets the keyboard layout for a particular input device. */
virtual sp<KeyCharacterMap> 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;
};
/* 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<InputDeviceInfo>& 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;
};
/* 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 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<EventHubInterface>& eventHub,
const sp<InputReaderPolicyInterface>& policy,
const sp<InputListenerInterface>& listener);
virtual ~InputReader();
virtual void dump(String8& dump);
virtual void monitor();
virtual void loopOnce();
virtual void getInputDevices(Vector<InputDeviceInfo>& 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 InputReaderPolicyInterface* getPolicy();
virtual InputListenerInterface* getListener();
virtual EventHubInterface* getEventHub();
} mContext;
friend class ContextImpl;
private:
Mutex mLock;
Condition mReaderIsAliveCondition;
sp<EventHubInterface> mEventHub;
sp<InputReaderPolicyInterface> mPolicy;
sp<QueuedInputListener> mQueuedListener;
InputReaderConfiguration mConfig;
// The event queue.
static const int EVENT_BUFFER_SIZE = 256;
RawEvent mEventBuffer[EVENT_BUFFER_SIZE];
KeyedVector<int32_t, InputDevice*> 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 fadePointerLocked();
int32_t mGeneration;
int32_t bumpGenerationLocked();
void getInputDevicesLocked(Vector<InputDeviceInfo>& 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<InputReaderInterface>& reader);
virtual ~InputReaderThread();
private:
sp<InputReaderInterface> 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 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 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 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);
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<InputMapper*> mMappers;
uint32_t mSources;
bool mIsExternal;
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 bool isHovering(uint32_t pointerIndex) {
return hoveringIdBits.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 int32_t getMetaState();
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);
};
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);
private:
uint32_t mUpdatedSwitchValues;
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<KeyDown> 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;
} 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<PointerControllerInterface> 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 timeoutExpired(nsecs_t when);
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;
} 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;
// Raw pointer axis information from the driver.
RawPointerAxes mRawPointerAxes;
// Raw pointer sample data.
RawPointerData mCurrentRawPointerData;
RawPointerData mLastRawPointerData;
// Cooked pointer sample data.
CookedPointerData mCurrentCookedPointerData;
CookedPointerData mLastCookedPointerData;
// Button state.
int32_t mCurrentButtonState;
int32_t mLastButtonState;
// Scroll state.
int32_t mCurrentRawVScroll;
int32_t mCurrentRawHScroll;
// Id bits used to differentiate fingers, stylus and mouse tools.
BitSet32 mCurrentFingerIdBits; // finger or unknown
BitSet32 mLastFingerIdBits;
BitSet32 mCurrentStylusIdBits; // stylus or eraser
BitSet32 mLastStylusIdBits;
BitSet32 mCurrentMouseIdBits; // mouse or lens
BitSet32 mLastMouseIdBits;
// True if we sent a HOVER_ENTER event.
bool mSentHoverEnter;
// The time the primary pointer last went down.
nsecs_t mDownTime;
// The pointer controller, or null if the device is not a pointer.
sp<PointerControllerInterface> mPointerController;
Vector<VirtualKey> 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 bool hasStylus() const = 0;
virtual void syncTouch(nsecs_t when, bool* outHavePointerIds) = 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;
// 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 sync(nsecs_t when);
bool consumeRawTouches(nsecs_t when, uint32_t policyFlags);
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);
// 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);
void assignPointerIds();
};
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, bool* outHavePointerIds);
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, bool* outHavePointerIds);
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 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<int32_t, Axis> 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
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