Log when MotionPauseDetector detects onMotionPauseChanged (c214335e) · Commits · e / os / BlissLauncher3

quickstep/src/com/android/quickstep/util/MotionPauseDetector.java

+19 −4

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@ package com.android.quickstep.util;

		import android.content.Context;
		import android.content.res.Resources;
		import android.util.Log;
		import android.view.MotionEvent;
		import android.view.VelocityTracker;

		@@ -31,6 +32,8 @@ import com.android.launcher3.testing.TestProtocol;
		*/
		public class MotionPauseDetector {

		private static final String TAG = "MotionPauseDetector";

		// The percentage of the previous speed that determines whether this is a rapid deceleration.
		// The bigger this number, the easier it is to trigger the first pause.
		private static final float RAPID_DECELERATION_FACTOR = 0.6f;
		@@ -85,7 +88,8 @@ public class MotionPauseDetector {
		mSpeedSomewhatFast = res.getDimension(R.dimen.motion_pause_detector_speed_somewhat_fast);
		mSpeedFast = res.getDimension(R.dimen.motion_pause_detector_speed_fast);
		mForcePauseTimeout = new Alarm();
		mForcePauseTimeout.setOnAlarmListener(alarm -> updatePaused(true /* isPaused */));
		mForcePauseTimeout.setOnAlarmListener(alarm -> updatePaused(true /* isPaused */,
		"Force pause timeout after " + alarm.getLastSetTimeout() + "ms" /* reason */));
		mMakePauseHarderToTrigger = makePauseHarderToTrigger;
		mVelocityProvider = new SystemVelocityProvider(axis);
		}
		@@ -102,7 +106,7 @@ public class MotionPauseDetector {
		*/
		public void setDisallowPause(boolean disallowPause) {
		mDisallowPause = disallowPause;
		updatePaused(mIsPaused);
		updatePaused(mIsPaused, "Set disallowPause=" + disallowPause);
		}

		/**
		@@ -134,21 +138,27 @@ public class MotionPauseDetector {
		float speed = Math.abs(velocity);
		float previousSpeed = Math.abs(prevVelocity);
		boolean isPaused;
		String isPausedReason = "";
		if (mIsPaused) {
		// Continue to be paused until moving at a fast speed.
		isPaused = speed < mSpeedFast \|\| previousSpeed < mSpeedFast;
		isPausedReason = "Was paused, but started moving at a fast speed";
		} else {
		if (velocity < 0 != prevVelocity < 0) {
		// We're just changing directions, not necessarily stopping.
		isPaused = false;
		isPausedReason = "Velocity changed directions";
		} else {
		isPaused = speed < mSpeedVerySlow && previousSpeed < mSpeedVerySlow;
		isPausedReason = "Pause requires back to back slow speeds";
		if (!isPaused && !mHasEverBeenPaused) {
		// We want to be more aggressive about detecting the first pause to ensure it
		// feels as responsive as possible; getting two very slow speeds back to back
		// takes too long, so also check for a rapid deceleration.
		boolean isRapidDeceleration = speed < previousSpeed * RAPID_DECELERATION_FACTOR;
		isPaused = isRapidDeceleration && speed < mSpeedSomewhatFast;
		isPausedReason = "Didn't have back to back slow speeds, checking for rapid"
		+ " deceleration on first pause only";
		}
		if (mMakePauseHarderToTrigger) {
		if (speed < mSpeedSlow) {
		@@ -156,22 +166,27 @@ public class MotionPauseDetector {
		mSlowStartTime = time;
		}
		isPaused = time - mSlowStartTime >= HARDER_TRIGGER_TIMEOUT;
		isPausedReason = "Maintained slow speed for sufficient duration when making"
		+ " pause harder to trigger";
		} else {
		mSlowStartTime = 0;
		isPaused = false;
		isPausedReason = "Intentionally making pause harder to trigger";
		}
		}
		}
		}
		updatePaused(isPaused);
		updatePaused(isPaused, isPausedReason);
		}

		private void updatePaused(boolean isPaused) {
		private void updatePaused(boolean isPaused, String reason) {
		if (mDisallowPause) {
		reason = "Disallow pause; otherwise, would have been " + isPaused + " due to " + reason;
		isPaused = false;
		}
		if (mIsPaused != isPaused) {
		mIsPaused = isPaused;
		Log.d(TAG, "onMotionPauseChanged, paused=" + mIsPaused + " reason=" + reason);
		boolean isFirstDetectedPause = !mHasEverBeenPaused && mIsPaused;
		if (mIsPaused) {
		AccessibilityManagerCompat.sendPauseDetectedEventToTest(mContext);

src/com/android/launcher3/Alarm.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ public class Alarm implements Runnable{
		private Handler mHandler;
		private OnAlarmListener mAlarmListener;
		private boolean mAlarmPending = false;
		private long mLastSetTimeout;

		public Alarm() {
		mHandler = new Handler();
		@@ -46,6 +47,7 @@ public class Alarm implements Runnable{
		mAlarmPending = true;
		long oldTriggerTime = mAlarmTriggerTime;
		mAlarmTriggerTime = currentTime + millisecondsInFuture;
		mLastSetTimeout = millisecondsInFuture;

		// If the previous alarm was set for a longer duration, cancel it.
		if (mWaitingForCallback && oldTriggerTime > mAlarmTriggerTime) {
		@@ -84,4 +86,9 @@ public class Alarm implements Runnable{
		public boolean alarmPending() {
		return mAlarmPending;
		}

		/** Returns the last value passed to {@link #setAlarm(long)} */
		public long getLastSetTimeout() {
		return mLastSetTimeout;
		}
		}