Merge "Cache Device Motion Prediction Availability" (6a4243fb) · Commits · e / os / android_frameworks_base

core/java/android/view/MotionPredictor.java

+8 −15

Original line number	Diff line number	Diff line
		@@ -49,15 +49,17 @@ public final class MotionPredictor {

		// Pointer to the native object.
		private final long mPtr;
		private final Context mContext;
		// Device-specific override to enable/disable motion prediction.
		private final boolean mIsPredictionEnabled;

		/**
		* Create a new MotionPredictor for the provided {@link Context}.
		* @param context The context for the predictions
		*/
		public MotionPredictor(@NonNull Context context) {
		mContext = context;
		final int offsetNanos = mContext.getResources().getInteger(
		mIsPredictionEnabled = context.getResources().getBoolean(
		com.android.internal.R.bool.config_enableMotionPrediction);
		final int offsetNanos = context.getResources().getInteger(
		com.android.internal.R.integer.config_motionPredictionOffsetNanos);
		mPtr = nativeInitialize(offsetNanos);
		RegistryHolder.REGISTRY.registerNativeAllocation(this, mPtr);
		@@ -73,7 +75,7 @@ public final class MotionPredictor {
		* @throws IllegalArgumentException if an inconsistent MotionEvent stream is sent.
		*/
		public void record(@NonNull MotionEvent event) {
		if (!isPredictionEnabled()) {
		if (!mIsPredictionEnabled) {
		return;
		}
		nativeRecord(mPtr, event);
		@@ -94,21 +96,12 @@ public final class MotionPredictor {
		*/
		@Nullable
		public MotionEvent predict(long predictionTimeNanos) {
		if (!isPredictionEnabled()) {
		if (!mIsPredictionEnabled) {
		return null;
		}
		return nativePredict(mPtr, predictionTimeNanos);
		}

		private boolean isPredictionEnabled() {
		// Device-specific override
		if (!mContext.getResources().getBoolean(
		com.android.internal.R.bool.config_enableMotionPrediction)) {
		return false;
		}
		return true;
		}

		/**
		* Check whether a device supports motion predictions for a given source type.
		*
		@@ -120,7 +113,7 @@ public final class MotionPredictor {
		* @see MotionEvent#getSource
		*/
		public boolean isPredictionAvailable(int deviceId, int source) {
		return isPredictionEnabled() && nativeIsPredictionAvailable(mPtr, deviceId, source);
		return mIsPredictionEnabled && nativeIsPredictionAvailable(mPtr, deviceId, source);
		}

		private static native long nativeInitialize(int offsetNanos);