| /* |
| * Copyright (C) 2015 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. |
| */ |
| |
| package com.android.server; |
| |
| import android.app.ActivityManager; |
| import android.app.StatusBarManager; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.content.res.Resources; |
| import android.database.ContentObserver; |
| import android.hardware.Sensor; |
| import android.hardware.SensorEvent; |
| import android.hardware.SensorEventListener; |
| import android.hardware.SensorManager; |
| import android.hardware.TriggerEvent; |
| import android.hardware.TriggerEventListener; |
| import android.os.Handler; |
| import android.os.PowerManager; |
| import android.os.PowerManager.WakeLock; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.Trace; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| import android.util.MutableBoolean; |
| import android.util.Slog; |
| import android.view.KeyEvent; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.logging.UiEvent; |
| import com.android.internal.logging.UiEventLogger; |
| import com.android.internal.logging.UiEventLoggerImpl; |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent; |
| import com.android.server.statusbar.StatusBarManagerInternal; |
| import com.android.server.wm.WindowManagerInternal; |
| |
| /** |
| * The service that listens for gestures detected in sensor firmware and starts the intent |
| * accordingly. |
| * <p>For now, only camera launch gesture is supported, and in the future, more gestures can be |
| * added.</p> |
| * @hide |
| */ |
| public class GestureLauncherService extends SystemService { |
| private static final boolean DBG = false; |
| private static final boolean DBG_CAMERA_LIFT = false; |
| private static final String TAG = "GestureLauncherService"; |
| |
| /** |
| * Time in milliseconds in which the power button must be pressed twice so it will be considered |
| * as a camera launch. |
| */ |
| @VisibleForTesting static final long CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS = 300; |
| |
| /** |
| * Min time in milliseconds to complete the emergency gesture for it count. If the gesture is |
| * completed faster than this, we assume it's not performed by human and the |
| * event gets ignored. |
| */ |
| @VisibleForTesting static final int EMERGENCY_GESTURE_TAP_DETECTION_MIN_TIME_MS = 200; |
| |
| /** |
| * Interval in milliseconds in which the power button must be depressed in succession to be |
| * considered part of an extended sequence of taps. Note that this is a looser threshold than |
| * the camera launch gesture, because the purpose of this threshold is to measure the |
| * frequency of consecutive taps, for evaluation for future gestures. |
| */ |
| @VisibleForTesting static final long POWER_SHORT_TAP_SEQUENCE_MAX_INTERVAL_MS = 500; |
| |
| /** |
| * Number of taps required to launch emergency gesture ui. |
| */ |
| private static final int EMERGENCY_GESTURE_POWER_TAP_COUNT_THRESHOLD = 5; |
| |
| /** |
| * Default value of the power button "cooldown" period after the Emergency gesture is triggered. |
| * See {@link Settings.Global#EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS} |
| */ |
| private static final int EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS_DEFAULT = 3000; |
| |
| /** |
| * Maximum value of the power button "cooldown" period after the Emergency gesture is triggered. |
| * The value read from {@link Settings.Global#EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS} |
| * is capped at this maximum. |
| */ |
| @VisibleForTesting |
| static final int EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS_MAX = 5000; |
| |
| /** |
| * Number of taps required to launch camera shortcut. |
| */ |
| private static final int CAMERA_POWER_TAP_COUNT_THRESHOLD = 2; |
| |
| /** The listener that receives the gesture event. */ |
| private final GestureEventListener mGestureListener = new GestureEventListener(); |
| private final CameraLiftTriggerEventListener mCameraLiftTriggerListener = |
| new CameraLiftTriggerEventListener(); |
| |
| private Sensor mCameraLaunchSensor; |
| private Sensor mCameraLiftTriggerSensor; |
| private Context mContext; |
| private final MetricsLogger mMetricsLogger; |
| private PowerManager mPowerManager; |
| private WindowManagerInternal mWindowManagerInternal; |
| |
| /** The wake lock held when a gesture is detected. */ |
| private WakeLock mWakeLock; |
| private boolean mCameraLaunchRegistered; |
| private boolean mCameraLiftRegistered; |
| private int mUserId; |
| |
| // Below are fields used for event logging only. |
| /** Elapsed real time when the camera gesture is turned on. */ |
| private long mCameraGestureOnTimeMs = 0L; |
| |
| /** Elapsed real time when the last camera gesture was detected. */ |
| private long mCameraGestureLastEventTime = 0L; |
| |
| /** |
| * How long the sensor 1 has been turned on since camera launch sensor was |
| * subscribed to and when the last camera launch gesture was detected. |
| * <p>Sensor 1 is the main sensor used to detect camera launch gesture.</p> |
| */ |
| private long mCameraGestureSensor1LastOnTimeMs = 0L; |
| |
| /** |
| * If applicable, how long the sensor 2 has been turned on since camera |
| * launch sensor was subscribed to and when the last camera launch |
| * gesture was detected. |
| * <p>Sensor 2 is the secondary sensor used to detect camera launch gesture. |
| * This is optional and if only sensor 1 is used for detect camera launch |
| * gesture, this value would always be 0.</p> |
| */ |
| private long mCameraGestureSensor2LastOnTimeMs = 0L; |
| |
| /** |
| * Extra information about the event when the last camera launch gesture |
| * was detected. |
| */ |
| private int mCameraLaunchLastEventExtra = 0; |
| |
| /** |
| * Whether camera double tap power button gesture is currently enabled; |
| */ |
| private boolean mCameraDoubleTapPowerEnabled; |
| |
| /** |
| * Whether emergency gesture is currently enabled |
| */ |
| private boolean mEmergencyGestureEnabled; |
| |
| /** |
| * Power button cooldown period in milliseconds, after emergency gesture is triggered. A zero |
| * value means the cooldown period is disabled. |
| */ |
| private int mEmergencyGesturePowerButtonCooldownPeriodMs; |
| |
| private long mLastPowerDown; |
| private long mFirstPowerDown; |
| private long mLastEmergencyGestureTriggered; |
| private int mPowerButtonConsecutiveTaps; |
| private int mPowerButtonSlowConsecutiveTaps; |
| private final UiEventLogger mUiEventLogger; |
| |
| private boolean mHasFeatureWatch; |
| |
| @VisibleForTesting |
| public enum GestureLauncherEvent implements UiEventLogger.UiEventEnum { |
| @UiEvent(doc = "The user lifted the device just the right way to launch the camera.") |
| GESTURE_CAMERA_LIFT(658), |
| |
| @UiEvent(doc = "The user wiggled the device just the right way to launch the camera.") |
| GESTURE_CAMERA_WIGGLE(659), |
| |
| @UiEvent(doc = "The user double-tapped power quickly enough to launch the camera.") |
| GESTURE_CAMERA_DOUBLE_TAP_POWER(660), |
| |
| @UiEvent(doc = "The user multi-tapped power quickly enough to signal an emergency.") |
| GESTURE_EMERGENCY_TAP_POWER(661); |
| |
| private final int mId; |
| |
| GestureLauncherEvent(int id) { |
| mId = id; |
| } |
| |
| @Override |
| public int getId() { |
| return mId; |
| } |
| } |
| public GestureLauncherService(Context context) { |
| this(context, new MetricsLogger(), new UiEventLoggerImpl()); |
| } |
| |
| @VisibleForTesting |
| GestureLauncherService(Context context, MetricsLogger metricsLogger, |
| UiEventLogger uiEventLogger) { |
| super(context); |
| mContext = context; |
| mMetricsLogger = metricsLogger; |
| mUiEventLogger = uiEventLogger; |
| } |
| |
| @Override |
| public void onStart() { |
| LocalServices.addService(GestureLauncherService.class, this); |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) { |
| Resources resources = mContext.getResources(); |
| if (!isGestureLauncherEnabled(resources)) { |
| if (DBG) Slog.d(TAG, "Gesture launcher is disabled in system properties."); |
| return; |
| } |
| |
| mWindowManagerInternal = LocalServices.getService(WindowManagerInternal.class); |
| mPowerManager = (PowerManager) mContext.getSystemService( |
| Context.POWER_SERVICE); |
| mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, |
| "GestureLauncherService"); |
| updateCameraRegistered(); |
| updateCameraDoubleTapPowerEnabled(); |
| updateEmergencyGestureEnabled(); |
| updateEmergencyGesturePowerButtonCooldownPeriodMs(); |
| |
| mUserId = ActivityManager.getCurrentUser(); |
| mContext.registerReceiver(mUserReceiver, new IntentFilter(Intent.ACTION_USER_SWITCHED)); |
| registerContentObservers(); |
| |
| mHasFeatureWatch = |
| mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH); |
| } |
| } |
| |
| private void registerContentObservers() { |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_GESTURE_DISABLED), |
| false, mSettingObserver, mUserId); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED), |
| false, mSettingObserver, mUserId); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED), |
| false, mSettingObserver, mUserId); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Secure.getUriFor(Settings.Secure.EMERGENCY_GESTURE_ENABLED), |
| false, mSettingObserver, mUserId); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.Global.getUriFor( |
| Settings.Global.EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS), |
| false, mSettingObserver, mUserId); |
| } |
| |
| private void updateCameraRegistered() { |
| Resources resources = mContext.getResources(); |
| if (isCameraLaunchSettingEnabled(mContext, mUserId)) { |
| registerCameraLaunchGesture(resources); |
| } else { |
| unregisterCameraLaunchGesture(); |
| } |
| |
| if (isCameraLiftTriggerSettingEnabled(mContext, mUserId)) { |
| registerCameraLiftTrigger(resources); |
| } else { |
| unregisterCameraLiftTrigger(); |
| } |
| } |
| |
| @VisibleForTesting |
| void updateCameraDoubleTapPowerEnabled() { |
| boolean enabled = isCameraDoubleTapPowerSettingEnabled(mContext, mUserId); |
| synchronized (this) { |
| mCameraDoubleTapPowerEnabled = enabled; |
| } |
| } |
| |
| @VisibleForTesting |
| void updateEmergencyGestureEnabled() { |
| boolean enabled = isEmergencyGestureSettingEnabled(mContext, mUserId); |
| synchronized (this) { |
| mEmergencyGestureEnabled = enabled; |
| } |
| } |
| |
| @VisibleForTesting |
| void updateEmergencyGesturePowerButtonCooldownPeriodMs() { |
| int cooldownPeriodMs = getEmergencyGesturePowerButtonCooldownPeriodMs(mContext, mUserId); |
| synchronized (this) { |
| mEmergencyGesturePowerButtonCooldownPeriodMs = cooldownPeriodMs; |
| } |
| } |
| |
| private void unregisterCameraLaunchGesture() { |
| if (mCameraLaunchRegistered) { |
| mCameraLaunchRegistered = false; |
| mCameraGestureOnTimeMs = 0L; |
| mCameraGestureLastEventTime = 0L; |
| mCameraGestureSensor1LastOnTimeMs = 0; |
| mCameraGestureSensor2LastOnTimeMs = 0; |
| mCameraLaunchLastEventExtra = 0; |
| |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| sensorManager.unregisterListener(mGestureListener); |
| } |
| } |
| |
| /** |
| * Registers for the camera launch gesture. |
| */ |
| private void registerCameraLaunchGesture(Resources resources) { |
| if (mCameraLaunchRegistered) { |
| return; |
| } |
| mCameraGestureOnTimeMs = SystemClock.elapsedRealtime(); |
| mCameraGestureLastEventTime = mCameraGestureOnTimeMs; |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| int cameraLaunchGestureId = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType); |
| if (cameraLaunchGestureId != -1) { |
| mCameraLaunchRegistered = false; |
| String sensorName = resources.getString( |
| com.android.internal.R.string.config_cameraLaunchGestureSensorStringType); |
| mCameraLaunchSensor = sensorManager.getDefaultSensor( |
| cameraLaunchGestureId, |
| true /*wakeUp*/); |
| |
| // Compare the camera gesture string type to that in the resource file to make |
| // sure we are registering the correct sensor. This is redundant check, it |
| // makes the code more robust. |
| if (mCameraLaunchSensor != null) { |
| if (sensorName.equals(mCameraLaunchSensor.getStringType())) { |
| mCameraLaunchRegistered = sensorManager.registerListener(mGestureListener, |
| mCameraLaunchSensor, 0); |
| } else { |
| String message = String.format("Wrong configuration. Sensor type and sensor " |
| + "string type don't match: %s in resources, %s in the sensor.", |
| sensorName, mCameraLaunchSensor.getStringType()); |
| throw new RuntimeException(message); |
| } |
| } |
| if (DBG) Slog.d(TAG, "Camera launch sensor registered: " + mCameraLaunchRegistered); |
| } else { |
| if (DBG) Slog.d(TAG, "Camera launch sensor is not specified."); |
| } |
| } |
| |
| private void unregisterCameraLiftTrigger() { |
| if (mCameraLiftRegistered) { |
| mCameraLiftRegistered = false; |
| |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| sensorManager.cancelTriggerSensor(mCameraLiftTriggerListener, mCameraLiftTriggerSensor); |
| } |
| } |
| |
| /** |
| * Registers for the camera lift trigger. |
| */ |
| private void registerCameraLiftTrigger(Resources resources) { |
| if (mCameraLiftRegistered) { |
| return; |
| } |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| int cameraLiftTriggerId = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLiftTriggerSensorType); |
| if (cameraLiftTriggerId != -1) { |
| mCameraLiftRegistered = false; |
| String sensorName = resources.getString( |
| com.android.internal.R.string.config_cameraLiftTriggerSensorStringType); |
| mCameraLiftTriggerSensor = sensorManager.getDefaultSensor( |
| cameraLiftTriggerId, |
| true /*wakeUp*/); |
| |
| // Compare the camera lift trigger string type to that in the resource file to make |
| // sure we are registering the correct sensor. This is redundant check, it |
| // makes the code more robust. |
| if (mCameraLiftTriggerSensor != null) { |
| if (sensorName.equals(mCameraLiftTriggerSensor.getStringType())) { |
| mCameraLiftRegistered = sensorManager.requestTriggerSensor(mCameraLiftTriggerListener, |
| mCameraLiftTriggerSensor); |
| } else { |
| String message = String.format("Wrong configuration. Sensor type and sensor " |
| + "string type don't match: %s in resources, %s in the sensor.", |
| sensorName, mCameraLiftTriggerSensor.getStringType()); |
| throw new RuntimeException(message); |
| } |
| } |
| if (DBG) Slog.d(TAG, "Camera lift trigger sensor registered: " + mCameraLiftRegistered); |
| } else { |
| if (DBG) Slog.d(TAG, "Camera lift trigger sensor is not specified."); |
| } |
| } |
| |
| public static boolean isCameraLaunchSettingEnabled(Context context, int userId) { |
| return isCameraLaunchEnabled(context.getResources()) |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), |
| Settings.Secure.CAMERA_GESTURE_DISABLED, 0, userId) == 0); |
| } |
| |
| public static boolean isCameraDoubleTapPowerSettingEnabled(Context context, int userId) { |
| return isCameraDoubleTapPowerEnabled(context.getResources()) |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), |
| Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED, 0, userId) == 0); |
| } |
| |
| public static boolean isCameraLiftTriggerSettingEnabled(Context context, int userId) { |
| return isCameraLiftTriggerEnabled(context.getResources()) |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), |
| Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED, |
| Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED_DEFAULT, userId) != 0); |
| } |
| |
| /** |
| * Whether to enable emergency gesture. |
| */ |
| public static boolean isEmergencyGestureSettingEnabled(Context context, int userId) { |
| return isEmergencyGestureEnabled(context.getResources()) |
| && Settings.Secure.getIntForUser(context.getContentResolver(), |
| Settings.Secure.EMERGENCY_GESTURE_ENABLED, |
| isDefaultEmergencyGestureEnabled(context.getResources()) ? 1 : 0, userId) != 0; |
| } |
| |
| /** |
| * Gets power button cooldown period in milliseconds after emergency gesture is triggered. The |
| * value is capped at a maximum |
| * {@link GestureLauncherService#EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS_MAX}. If the |
| * value is zero, it means the cooldown period is disabled. |
| */ |
| @VisibleForTesting |
| static int getEmergencyGesturePowerButtonCooldownPeriodMs(Context context, int userId) { |
| int cooldown = Settings.Global.getInt(context.getContentResolver(), |
| Settings.Global.EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS, |
| EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS_DEFAULT); |
| |
| return Math.min(cooldown, EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS_MAX); |
| } |
| |
| /** |
| * Whether to enable the camera launch gesture. |
| */ |
| private static boolean isCameraLaunchEnabled(Resources resources) { |
| boolean configSet = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType) != -1; |
| return configSet && |
| !SystemProperties.getBoolean("gesture.disable_camera_launch", false); |
| } |
| |
| @VisibleForTesting |
| static boolean isCameraDoubleTapPowerEnabled(Resources resources) { |
| return resources.getBoolean( |
| com.android.internal.R.bool.config_cameraDoubleTapPowerGestureEnabled); |
| } |
| |
| private static boolean isCameraLiftTriggerEnabled(Resources resources) { |
| boolean configSet = resources.getInteger( |
| com.android.internal.R.integer.config_cameraLiftTriggerSensorType) != -1; |
| return configSet; |
| } |
| |
| /** |
| * Whether or not the emergency gesture feature is enabled by platform |
| */ |
| private static boolean isEmergencyGestureEnabled(Resources resources) { |
| return resources.getBoolean(com.android.internal.R.bool.config_emergencyGestureEnabled); |
| } |
| |
| private static boolean isDefaultEmergencyGestureEnabled(Resources resources) { |
| return resources.getBoolean( |
| com.android.internal.R.bool.config_defaultEmergencyGestureEnabled); |
| } |
| |
| /** |
| * Whether GestureLauncherService should be enabled according to system properties. |
| */ |
| public static boolean isGestureLauncherEnabled(Resources resources) { |
| return isCameraLaunchEnabled(resources) |
| || isCameraDoubleTapPowerEnabled(resources) |
| || isCameraLiftTriggerEnabled(resources) |
| || isEmergencyGestureEnabled(resources); |
| } |
| |
| /** |
| * Attempts to intercept power key down event by detecting certain gesture patterns |
| * |
| * @param interactive true if the event's policy contains {@code FLAG_INTERACTIVE} |
| * @param outLaunched true if some action is taken as part of the key intercept (eg, app launch) |
| * @return true if the key down event is intercepted |
| */ |
| public boolean interceptPowerKeyDown(KeyEvent event, boolean interactive, |
| MutableBoolean outLaunched) { |
| if (mEmergencyGestureEnabled && mEmergencyGesturePowerButtonCooldownPeriodMs >= 0 |
| && event.getEventTime() - mLastEmergencyGestureTriggered |
| < mEmergencyGesturePowerButtonCooldownPeriodMs) { |
| Slog.i(TAG, String.format( |
| "Suppressing power button: within %dms cooldown period after Emergency " |
| + "Gesture. Begin=%dms, end=%dms.", |
| mEmergencyGesturePowerButtonCooldownPeriodMs, |
| mLastEmergencyGestureTriggered, |
| mLastEmergencyGestureTriggered + mEmergencyGesturePowerButtonCooldownPeriodMs)); |
| outLaunched.value = false; |
| return true; |
| } |
| |
| if (event.isLongPress()) { |
| // Long presses are sent as a second key down. If the long press threshold is set lower |
| // than the double tap of sequence interval thresholds, this could cause false double |
| // taps or consecutive taps, so we want to ignore the long press event. |
| outLaunched.value = false; |
| return false; |
| } |
| boolean launchCamera = false; |
| boolean launchEmergencyGesture = false; |
| boolean intercept = false; |
| long powerTapInterval; |
| synchronized (this) { |
| powerTapInterval = event.getEventTime() - mLastPowerDown; |
| mLastPowerDown = event.getEventTime(); |
| if (powerTapInterval >= POWER_SHORT_TAP_SEQUENCE_MAX_INTERVAL_MS) { |
| // Tap too slow, reset consecutive tap counts. |
| mFirstPowerDown = event.getEventTime(); |
| mPowerButtonConsecutiveTaps = 1; |
| mPowerButtonSlowConsecutiveTaps = 1; |
| } else if (powerTapInterval >= CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS) { |
| // Tap too slow for shortcuts |
| mFirstPowerDown = event.getEventTime(); |
| mPowerButtonConsecutiveTaps = 1; |
| mPowerButtonSlowConsecutiveTaps++; |
| } else { |
| // Fast consecutive tap |
| mPowerButtonConsecutiveTaps++; |
| mPowerButtonSlowConsecutiveTaps++; |
| } |
| // Check if we need to launch camera or emergency gesture flows |
| if (mEmergencyGestureEnabled) { |
| // Commit to intercepting the powerkey event after the second "quick" tap to avoid |
| // lockscreen changes between launching camera and the emergency gesture flow. |
| // Since watch doesn't have camera gesture, only intercept power key event after |
| // emergency gesture tap count. |
| if (mPowerButtonConsecutiveTaps |
| > (mHasFeatureWatch ? EMERGENCY_GESTURE_POWER_TAP_COUNT_THRESHOLD : 1)) { |
| intercept = interactive; |
| } |
| if (mPowerButtonConsecutiveTaps == EMERGENCY_GESTURE_POWER_TAP_COUNT_THRESHOLD) { |
| long emergencyGestureSpentTime = event.getEventTime() - mFirstPowerDown; |
| long emergencyGestureTapDetectionMinTimeMs = Settings.Global.getInt( |
| mContext.getContentResolver(), |
| Settings.Global.EMERGENCY_GESTURE_TAP_DETECTION_MIN_TIME_MS, |
| EMERGENCY_GESTURE_TAP_DETECTION_MIN_TIME_MS); |
| if (emergencyGestureSpentTime <= emergencyGestureTapDetectionMinTimeMs) { |
| Slog.i(TAG, "Emergency gesture detected but it's too fast. Gesture time: " |
| + emergencyGestureSpentTime + " ms"); |
| // Reset consecutive tap counts. |
| mFirstPowerDown = event.getEventTime(); |
| mPowerButtonConsecutiveTaps = 1; |
| mPowerButtonSlowConsecutiveTaps = 1; |
| } else { |
| Slog.i(TAG, "Emergency gesture detected. Gesture time: " |
| + emergencyGestureSpentTime + " ms"); |
| launchEmergencyGesture = true; |
| mMetricsLogger.histogram("emergency_gesture_spent_time", |
| (int) emergencyGestureSpentTime); |
| |
| } |
| } |
| } |
| if (mCameraDoubleTapPowerEnabled |
| && powerTapInterval < CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS |
| && mPowerButtonConsecutiveTaps == CAMERA_POWER_TAP_COUNT_THRESHOLD) { |
| launchCamera = true; |
| intercept = interactive; |
| } |
| } |
| if (mPowerButtonConsecutiveTaps > 1 || mPowerButtonSlowConsecutiveTaps > 1) { |
| Slog.i(TAG, Long.valueOf(mPowerButtonConsecutiveTaps) |
| + " consecutive power button taps detected, " |
| + Long.valueOf(mPowerButtonSlowConsecutiveTaps) |
| + " consecutive slow power button taps detected"); |
| } |
| if (launchCamera) { |
| Slog.i(TAG, "Power button double tap gesture detected, launching camera. Interval=" |
| + powerTapInterval + "ms"); |
| launchCamera = handleCameraGesture(false /* useWakelock */, |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_POWER_DOUBLE_TAP); |
| if (launchCamera) { |
| mMetricsLogger.action(MetricsEvent.ACTION_DOUBLE_TAP_POWER_CAMERA_GESTURE, |
| (int) powerTapInterval); |
| mUiEventLogger.log(GestureLauncherEvent.GESTURE_CAMERA_DOUBLE_TAP_POWER); |
| } |
| } else if (launchEmergencyGesture) { |
| Slog.i(TAG, "Emergency gesture detected, launching."); |
| launchEmergencyGesture = handleEmergencyGesture(); |
| mUiEventLogger.log(GestureLauncherEvent.GESTURE_EMERGENCY_TAP_POWER); |
| // Record emergency trigger time if emergency UI was launched |
| if (launchEmergencyGesture) { |
| synchronized (this) { |
| mLastEmergencyGestureTriggered = event.getEventTime(); |
| } |
| } |
| } |
| mMetricsLogger.histogram("power_consecutive_short_tap_count", |
| mPowerButtonSlowConsecutiveTaps); |
| mMetricsLogger.histogram("power_double_tap_interval", (int) powerTapInterval); |
| |
| outLaunched.value = launchCamera || launchEmergencyGesture; |
| // Intercept power key event if the press is part of a gesture (camera, eGesture) and the |
| // user has completed setup. |
| return intercept && isUserSetupComplete(); |
| } |
| /** |
| * @return true if camera was launched, false otherwise. |
| */ |
| @VisibleForTesting |
| boolean handleCameraGesture(boolean useWakelock, int source) { |
| Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "GestureLauncher:handleCameraGesture"); |
| try { |
| boolean userSetupComplete = isUserSetupComplete(); |
| if (!userSetupComplete) { |
| if (DBG) { |
| Slog.d(TAG, String.format( |
| "userSetupComplete = %s, ignoring camera gesture.", |
| userSetupComplete)); |
| } |
| return false; |
| } |
| if (DBG) { |
| Slog.d(TAG, String.format( |
| "userSetupComplete = %s, performing camera gesture.", |
| userSetupComplete)); |
| } |
| |
| if (useWakelock) { |
| // Make sure we don't sleep too early |
| mWakeLock.acquire(500L); |
| } |
| StatusBarManagerInternal service = LocalServices.getService( |
| StatusBarManagerInternal.class); |
| service.onCameraLaunchGestureDetected(source); |
| return true; |
| } finally { |
| Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| } |
| } |
| |
| /** |
| * @return true if emergency gesture UI was launched, false otherwise. |
| */ |
| @VisibleForTesting |
| boolean handleEmergencyGesture() { |
| Trace.traceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, |
| "GestureLauncher:handleEmergencyGesture"); |
| try { |
| boolean userSetupComplete = isUserSetupComplete(); |
| if (!userSetupComplete) { |
| if (DBG) { |
| Slog.d(TAG, String.format( |
| "userSetupComplete = %s, ignoring emergency gesture.", |
| userSetupComplete)); |
| } |
| return false; |
| } |
| if (DBG) { |
| Slog.d(TAG, String.format( |
| "userSetupComplete = %s, performing emergency gesture.", |
| userSetupComplete)); |
| } |
| |
| StatusBarManagerInternal service = LocalServices.getService( |
| StatusBarManagerInternal.class); |
| service.onEmergencyActionLaunchGestureDetected(); |
| return true; |
| } finally { |
| Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER); |
| } |
| } |
| |
| private boolean isUserSetupComplete() { |
| return Settings.Secure.getIntForUser(mContext.getContentResolver(), |
| Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0; |
| } |
| |
| private final BroadcastReceiver mUserReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) { |
| mUserId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); |
| mContext.getContentResolver().unregisterContentObserver(mSettingObserver); |
| registerContentObservers(); |
| updateCameraRegistered(); |
| updateCameraDoubleTapPowerEnabled(); |
| updateEmergencyGestureEnabled(); |
| updateEmergencyGesturePowerButtonCooldownPeriodMs(); |
| } |
| } |
| }; |
| |
| private final ContentObserver mSettingObserver = new ContentObserver(new Handler()) { |
| public void onChange(boolean selfChange, android.net.Uri uri, int userId) { |
| if (userId == mUserId) { |
| updateCameraRegistered(); |
| updateCameraDoubleTapPowerEnabled(); |
| updateEmergencyGestureEnabled(); |
| updateEmergencyGesturePowerButtonCooldownPeriodMs(); |
| } |
| } |
| }; |
| |
| private final class GestureEventListener implements SensorEventListener { |
| @Override |
| public void onSensorChanged(SensorEvent event) { |
| if (!mCameraLaunchRegistered) { |
| if (DBG) Slog.d(TAG, "Ignoring gesture event because it's unregistered."); |
| return; |
| } |
| if (event.sensor == mCameraLaunchSensor) { |
| if (DBG) { |
| float[] values = event.values; |
| Slog.d(TAG, String.format("Received a camera launch event: " + |
| "values=[%.4f, %.4f, %.4f].", values[0], values[1], values[2])); |
| } |
| if (handleCameraGesture(true /* useWakelock */, |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_WIGGLE)) { |
| mMetricsLogger.action(MetricsEvent.ACTION_WIGGLE_CAMERA_GESTURE); |
| mUiEventLogger.log(GestureLauncherEvent.GESTURE_CAMERA_WIGGLE); |
| trackCameraLaunchEvent(event); |
| } |
| return; |
| } |
| } |
| |
| @Override |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| // Ignored. |
| } |
| |
| private void trackCameraLaunchEvent(SensorEvent event) { |
| long now = SystemClock.elapsedRealtime(); |
| long totalDuration = now - mCameraGestureOnTimeMs; |
| // values[0]: ratio between total time duration when accel is turned on and time |
| // duration since camera launch gesture is subscribed. |
| // values[1]: ratio between total time duration when gyro is turned on and time duration |
| // since camera launch gesture is subscribed. |
| // values[2]: extra information |
| float[] values = event.values; |
| |
| long sensor1OnTime = (long) (totalDuration * (double) values[0]); |
| long sensor2OnTime = (long) (totalDuration * (double) values[1]); |
| int extra = (int) values[2]; |
| |
| // We only log the difference in the event log to make aggregation easier. |
| long gestureOnTimeDiff = now - mCameraGestureLastEventTime; |
| long sensor1OnTimeDiff = sensor1OnTime - mCameraGestureSensor1LastOnTimeMs; |
| long sensor2OnTimeDiff = sensor2OnTime - mCameraGestureSensor2LastOnTimeMs; |
| int extraDiff = extra - mCameraLaunchLastEventExtra; |
| |
| // Gating against negative time difference. This doesn't usually happen, but it may |
| // happen because of numeric errors. |
| if (gestureOnTimeDiff < 0 || sensor1OnTimeDiff < 0 || sensor2OnTimeDiff < 0) { |
| if (DBG) Slog.d(TAG, "Skipped event logging because negative numbers."); |
| return; |
| } |
| |
| if (DBG) Slog.d(TAG, String.format("totalDuration: %d, sensor1OnTime: %s, " + |
| "sensor2OnTime: %d, extra: %d", |
| gestureOnTimeDiff, |
| sensor1OnTimeDiff, |
| sensor2OnTimeDiff, |
| extraDiff)); |
| EventLogTags.writeCameraGestureTriggered( |
| gestureOnTimeDiff, |
| sensor1OnTimeDiff, |
| sensor2OnTimeDiff, |
| extraDiff); |
| |
| mCameraGestureLastEventTime = now; |
| mCameraGestureSensor1LastOnTimeMs = sensor1OnTime; |
| mCameraGestureSensor2LastOnTimeMs = sensor2OnTime; |
| mCameraLaunchLastEventExtra = extra; |
| } |
| } |
| |
| private final class CameraLiftTriggerEventListener extends TriggerEventListener { |
| @Override |
| public void onTrigger(TriggerEvent event) { |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, String.format("onTrigger event - time: %d, name: %s", |
| event.timestamp, event.sensor.getName())); |
| if (!mCameraLiftRegistered) { |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Ignoring camera lift event because it's " + |
| "unregistered."); |
| return; |
| } |
| if (event.sensor == mCameraLiftTriggerSensor) { |
| Resources resources = mContext.getResources(); |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( |
| Context.SENSOR_SERVICE); |
| boolean keyguardShowingAndNotOccluded = |
| mWindowManagerInternal.isKeyguardShowingAndNotOccluded(); |
| boolean interactive = mPowerManager.isInteractive(); |
| if (DBG_CAMERA_LIFT) { |
| float[] values = event.values; |
| Slog.d(TAG, String.format("Received a camera lift trigger " + |
| "event: values=[%.4f], keyguard showing: %b, interactive: %b", values[0], |
| keyguardShowingAndNotOccluded, interactive)); |
| } |
| if (keyguardShowingAndNotOccluded || !interactive) { |
| if (handleCameraGesture(true /* useWakelock */, |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_LIFT_TRIGGER)) { |
| MetricsLogger.action(mContext, MetricsEvent.ACTION_CAMERA_LIFT_TRIGGER); |
| mUiEventLogger.log(GestureLauncherEvent.GESTURE_CAMERA_LIFT); |
| } |
| } else { |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Ignoring lift event"); |
| } |
| |
| mCameraLiftRegistered = sensorManager.requestTriggerSensor( |
| mCameraLiftTriggerListener, mCameraLiftTriggerSensor); |
| |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Camera lift trigger sensor re-registered: " + |
| mCameraLiftRegistered); |
| return; |
| } |
| } |
| } |
| } |
