src.com.android.server.GestureLauncherService Maven / Gradle / Ivy
/*
* 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.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
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.os.VibrationEffect;
import android.os.Vibrator;
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.
* For now, only camera launch gesture is supported, and in the future, more gestures can be
* added.
* @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 = 160;
/**
* 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;
/** Action for starting emergency alerts on Wear OS. */
private static final String WEAR_LAUNCH_EMERGENCY_ACTION =
"com.android.systemui.action.LAUNCH_EMERGENCY";
/** Action for starting emergency alerts in retail mode on Wear OS. */
private static final String WEAR_LAUNCH_EMERGENCY_RETAIL_ACTION =
"com.android.systemui.action.LAUNCH_EMERGENCY_RETAIL";
/**
* Boolean extra for distinguishing intents coming from power button gesture.
*/
private static final String EXTRA_LAUNCH_EMERGENCY_VIA_GESTURE = "launch_emergency_via_gesture";
/** 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.
* Sensor 1 is the main sensor used to detect camera launch gesture.
*/
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.
* 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.
*/
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;
private long mVibrateMilliSecondsForPanicGesture;
@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);
mVibrateMilliSecondsForPanicGesture =
resources.getInteger(
com.android
.internal
.R
.integer
.config_mashPressVibrateTimeOnPowerButton);
}
}
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, 1, 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);
}
/**
* 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));
}
if (mHasFeatureWatch) {
onEmergencyGestureDetectedOnWatch();
return true;
}
StatusBarManagerInternal service = LocalServices.getService(
StatusBarManagerInternal.class);
service.onEmergencyActionLaunchGestureDetected();
return true;
} finally {
Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
}
}
private void onEmergencyGestureDetectedOnWatch() {
Intent emergencyIntent =
new Intent(
isInRetailMode()
? WEAR_LAUNCH_EMERGENCY_RETAIL_ACTION
: WEAR_LAUNCH_EMERGENCY_ACTION);
PackageManager pm = mContext.getPackageManager();
ResolveInfo resolveInfo = pm.resolveActivity(emergencyIntent, /*flags=*/0);
if (resolveInfo == null) {
Slog.w(TAG, "Couldn't find an app to process the emergency intent "
+ emergencyIntent.getAction());
return;
}
Vibrator vibrator = mContext.getSystemService(Vibrator.class);
vibrator.vibrate(VibrationEffect.createOneShot(mVibrateMilliSecondsForPanicGesture,
VibrationEffect.DEFAULT_AMPLITUDE));
emergencyIntent.setComponent(
new ComponentName(
resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name));
emergencyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
emergencyIntent.putExtra(EXTRA_LAUNCH_EMERGENCY_VIA_GESTURE, true);
mContext.startActivityAsUser(emergencyIntent, new UserHandle(mUserId));
}
private boolean isInRetailMode() {
return Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DEVICE_DEMO_MODE, 0) == 1;
}
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;
}
}
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy