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/*
* Copyright (C) 2020 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 android.rotationresolver;
import android.annotation.DurationMillisLong;
import android.annotation.NonNull;
import android.os.CancellationSignal;
import android.service.rotationresolver.RotationResolverService;
import android.view.Surface;
/**
* Internal service for resolving screen rotation.
*
* @hide Only for use within the system server.
*/
public abstract class RotationResolverInternal {
/**
* Returns {@code true} if rotation resolver service is supported on the current device.
*/
public abstract boolean isRotationResolverSupported();
/**
* Queries the appropriate screen orientation.
*
* <p> The screen rotation that's proposed by the system may not be accurate enough. This method
* is available for the system to request a screen rotation resolution from the {@link
* RotationResolverService}, which can intelligently determine the appropriate screen rotation
* based on various sensors.
*
* @param callback the callback that will be called when the result is computed or an
* error is captured. {@link RotationResolverCallbackInternal}
* @param packageName the package name of the fore ground activity.
* @param proposedRotation the screen rotation that is proposed by the system.
* @param currentRotation the current screen rotation.
* @param timeoutMillis the timeout in millisecond for the query. If the query doesn't get
* fulfilled within this amount of time. It will be discarded and the
* callback will receive a failure result code {@link
* RotationResolverService#ROTATION_RESULT_FAILURE_TIMED_OUT}.
* @param cancellationSignal a cancellation signal that notifies the rotation resolver manger
*/
public abstract void resolveRotation(@NonNull RotationResolverCallbackInternal callback,
String packageName, @Surface.Rotation int proposedRotation,
@Surface.Rotation int currentRotation, @DurationMillisLong long timeoutMillis,
@NonNull CancellationSignal cancellationSignal);
/**
* Internal interfaces for the rotation resolver callback.
*/
public interface RotationResolverCallbackInternal {
/**
* Gets called when the screen rotation is calculated successfully.
*
* @param result the resolved screen rotation.
*/
void onSuccess(@Surface.Rotation int result);
/**
* Gets called when it fails to resolve the screen rotation.
*
* @param error the reason of the failure.
*/
void onFailure(@RotationResolverService.FailureCodes int error);
}
}
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