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Commit 9c5b9fc5 authored by Juan Lang's avatar Juan Lang Committed by Android (Google) Code Review
Browse files

Merge changes I3d96f55a,I581c100b,I5c424160 

* changes:
  Count and log the number of consecutive rapid power button presses.
  Add tests for MetricsLogger events.
  Add unit tests for power button-related pieces of the GestureLauncherService.
parents 20c99a2c 0ba2237d

services/core/java/com/android/server/GestureLauncherService.java

+40 −11
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 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.nano.MetricsProto.MetricsEvent;

import com.android.server.statusbar.StatusBarManagerInternal;
@@ -58,13 +59,22 @@ public class GestureLauncherService extends SystemService { 
     * Time in milliseconds in which the power button must be pressed twice so it will be considered

     * as a camera launch.

     */

    private static final long CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS = 300;

    @VisibleForTesting static final long CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS = 300;



    /**

     * 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;



    /** The listener that receives the gesture event. */

    private final GestureEventListener mGestureListener = new GestureEventListener();



    private Sensor mCameraLaunchSensor;

    private Context mContext;

    private final MetricsLogger mMetricsLogger;



    /** The wake lock held when a gesture is detected. */

    private WakeLock mWakeLock;
@@ -106,10 +116,17 @@ public class GestureLauncherService extends SystemService { 
     */

    private boolean mCameraDoubleTapPowerEnabled;

    private long mLastPowerDown;

    private int mPowerButtonConsecutiveTaps;



    public GestureLauncherService(Context context) {

        this(context, new MetricsLogger());

    }



    @VisibleForTesting

    GestureLauncherService(Context context, MetricsLogger metricsLogger) {

        super(context);

        mContext = context;

        mMetricsLogger = metricsLogger;

    }



    public void onStart() {
@@ -155,7 +172,8 @@ public class GestureLauncherService extends SystemService { 
        }

    }



    private void updateCameraDoubleTapPowerEnabled() {

    @VisibleForTesting

    void updateCameraDoubleTapPowerEnabled() {

        boolean enabled = isCameraDoubleTapPowerSettingEnabled(mContext, mUserId);

        synchronized (this) {

            mCameraDoubleTapPowerEnabled = enabled;
@@ -256,27 +274,37 @@ public class GestureLauncherService extends SystemService { 
            MutableBoolean outLaunched) {

        boolean launched = false;

        boolean intercept = false;

        long doubleTapInterval;

        long powerTapInterval;

        synchronized (this) {

            doubleTapInterval = event.getEventTime() - mLastPowerDown;

            powerTapInterval = event.getEventTime() - mLastPowerDown;

            if (mCameraDoubleTapPowerEnabled

                    && doubleTapInterval < CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS) {

                    && powerTapInterval < CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS) {

                launched = true;

                intercept = interactive;

                mPowerButtonConsecutiveTaps++;

            } else if (powerTapInterval < POWER_SHORT_TAP_SEQUENCE_MAX_INTERVAL_MS) {

                mPowerButtonConsecutiveTaps++;

            } else {

                mPowerButtonConsecutiveTaps = 1;

            }

            mLastPowerDown = event.getEventTime();

        }

        if (DBG && mPowerButtonConsecutiveTaps > 1) {

            Slog.i(TAG, Long.valueOf(mPowerButtonConsecutiveTaps) +

                    " consecutive power button taps detected");

        }

        if (launched) {

            Slog.i(TAG, "Power button double tap gesture detected, launching camera. Interval="

                    + doubleTapInterval + "ms");

                    + powerTapInterval + "ms");

            launched = handleCameraLaunchGesture(false /* useWakelock */,

                    StatusBarManager.CAMERA_LAUNCH_SOURCE_POWER_DOUBLE_TAP);

            if (launched) {

                MetricsLogger.action(mContext, MetricsEvent.ACTION_DOUBLE_TAP_POWER_CAMERA_GESTURE,

                        (int) doubleTapInterval);

                mMetricsLogger.action(MetricsEvent.ACTION_DOUBLE_TAP_POWER_CAMERA_GESTURE,

                        (int) powerTapInterval);

            }

        }

        MetricsLogger.histogram(mContext, "power_double_tap_interval", (int) doubleTapInterval);

        mMetricsLogger.histogram("power_consecutive_short_tap_count", mPowerButtonConsecutiveTaps);

        mMetricsLogger.histogram("power_double_tap_interval", (int) powerTapInterval);

        outLaunched.value = launched;

        return intercept && launched;

    }
@@ -284,7 +312,8 @@ public class GestureLauncherService extends SystemService { 
    /**

     * @return true if camera was launched, false otherwise.

     */

    private boolean handleCameraLaunchGesture(boolean useWakelock, int source) {

    @VisibleForTesting

    boolean handleCameraLaunchGesture(boolean useWakelock, int source) {

        boolean userSetupComplete = Settings.Secure.getIntForUser(mContext.getContentResolver(),

                Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0;

        if (!userSetupComplete) {
@@ -344,7 +373,7 @@ public class GestureLauncherService extends SystemService { 
                }

                if (handleCameraLaunchGesture(true /* useWakelock */,

                        StatusBarManager.CAMERA_LAUNCH_SOURCE_WIGGLE)) {

                    MetricsLogger.action(mContext, MetricsEvent.ACTION_WIGGLE_CAMERA_GESTURE);

                    mMetricsLogger.action(MetricsEvent.ACTION_WIGGLE_CAMERA_GESTURE);

                    trackCameraLaunchEvent(event);

                }

                return;