Prevent sensor induced rotations while screen is touched (3595be4d) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/policy/PhoneWindowManager.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -1327,6 +1327,14 @@ public class PhoneWindowManager implements WindowManagerPolicy {
		public void onDebug() {
		// no-op
		}
		@Override
		public void onDown() {
		mOrientationListener.onTouchStart();
		}
		@Override
		public void onUpOrCancel() {
		mOrientationListener.onTouchEnd();
		}
		});
		mImmersiveModeConfirmation = new ImmersiveModeConfirmation(mContext);
		mWindowManagerFuncs.registerPointerEventListener(mSystemGestures);

services/core/java/com/android/server/policy/SystemGesturesPointerEventListener.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,7 @@ public class SystemGesturesPointerEventListener implements PointerEventListener
		mDebugFireable = true;
		mDownPointers = 0;
		captureDown(event, 0);
		mCallbacks.onDown();
		break;
		case MotionEvent.ACTION_POINTER_DOWN:
		captureDown(event, event.getActionIndex());
		@@ -106,6 +107,7 @@ public class SystemGesturesPointerEventListener implements PointerEventListener
		case MotionEvent.ACTION_CANCEL:
		mSwipeFireable = false;
		mDebugFireable = false;
		mCallbacks.onUpOrCancel();
		break;
		default:
		if (DEBUG) Slog.d(TAG, "Ignoring " + event);
		@@ -192,6 +194,8 @@ public class SystemGesturesPointerEventListener implements PointerEventListener
		void onSwipeFromTop();
		void onSwipeFromBottom();
		void onSwipeFromRight();
		void onDown();
		void onUpOrCancel();
		void onDebug();
		}
		}

services/core/java/com/android/server/policy/WindowOrientationListener.java

+44 −1

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import android.hardware.SensorEvent;
		import android.hardware.SensorEventListener;
		import android.hardware.SensorManager;
		import android.os.Handler;
		import android.os.SystemClock;
		import android.os.SystemProperties;
		import android.util.Log;
		import android.util.Slog;
		@@ -133,6 +134,20 @@ public abstract class WindowOrientationListener {
		}
		}

		public void onTouchStart() {
		synchronized (mLock) {
		mSensorEventListener.onTouchStartLocked();
		}
		}

		public void onTouchEnd() {
		long whenElapsedNanos = SystemClock.elapsedRealtimeNanos();

		synchronized (mLock) {
		mSensorEventListener.onTouchEndLocked(whenElapsedNanos);
		}
		}

		/**
		* Sets the current rotation.
		*
		@@ -269,6 +284,11 @@ public abstract class WindowOrientationListener {
		private static final long PROPOSAL_MIN_TIME_SINCE_ACCELERATION_ENDED_NANOS =
		500 * NANOS_PER_MS;

		// The minimum amount of time that must have elapsed since the screen was last touched
		// before the proposed rotation can change.
		private static final long PROPOSAL_MIN_TIME_SINCE_TOUCH_END_NANOS =
		500 * NANOS_PER_MS;

		// If the tilt angle remains greater than the specified angle for a minimum of
		// the specified time, then the device is deemed to be lying flat
		// (just chillin' on a table).
		@@ -398,6 +418,10 @@ public abstract class WindowOrientationListener {
		private long mAccelerationTimestampNanos;
		private boolean mAccelerating;

		// Timestamp when the last touch to the touch screen ended
		private long mTouchEndedTimestampNanos = Long.MIN_VALUE;
		private boolean mTouched;

		// Whether we are locked into an overhead usage mode.
		private boolean mOverhead;

		@@ -422,6 +446,7 @@ public abstract class WindowOrientationListener {
		pw.println(prefix + "mSwinging=" + mSwinging);
		pw.println(prefix + "mAccelerating=" + mAccelerating);
		pw.println(prefix + "mOverhead=" + mOverhead);
		pw.println(prefix + "mTouched=" + mTouched);
		}

		@Override
		@@ -601,6 +626,7 @@ public abstract class WindowOrientationListener {
		+ ", isFlat=" + isFlat
		+ ", isSwinging=" + isSwinging
		+ ", isOverhead=" + mOverhead
		+ ", isTouched=" + mTouched
		+ ", timeUntilSettledMS=" + remainingMS(now,
		mPredictedRotationTimestampNanos + PROPOSAL_SETTLE_TIME_NANOS)
		+ ", timeUntilAccelerationDelayExpiredMS=" + remainingMS(now,
		@@ -608,7 +634,9 @@ public abstract class WindowOrientationListener {
		+ ", timeUntilFlatDelayExpiredMS=" + remainingMS(now,
		mFlatTimestampNanos + PROPOSAL_MIN_TIME_SINCE_FLAT_ENDED_NANOS)
		+ ", timeUntilSwingDelayExpiredMS=" + remainingMS(now,
		mSwingTimestampNanos + PROPOSAL_MIN_TIME_SINCE_SWING_ENDED_NANOS));
		mSwingTimestampNanos + PROPOSAL_MIN_TIME_SINCE_SWING_ENDED_NANOS)
		+ ", timeUntilTouchDelayExpiredMS=" + remainingMS(now,
		mTouchEndedTimestampNanos + PROPOSAL_MIN_TIME_SINCE_TOUCH_END_NANOS));
		}
		}

		@@ -710,6 +738,12 @@ public abstract class WindowOrientationListener {
		return false;
		}

		// The last touch must have ended sufficiently long ago.
		if (mTouched \|\| now < mTouchEndedTimestampNanos
		+ PROPOSAL_MIN_TIME_SINCE_TOUCH_END_NANOS) {
		return false;
		}

		// Looks good!
		return true;
		}
		@@ -796,5 +830,14 @@ public abstract class WindowOrientationListener {
		private float remainingMS(long now, long until) {
		return now >= until ? 0 : (until - now) * 0.000001f;
		}

		private void onTouchStartLocked() {
		mTouched = true;
		}

		private void onTouchEndLocked(long whenElapsedNanos) {
		mTouched = false;
		mTouchEndedTimestampNanos = whenElapsedNanos;
		}
		}
		}