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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.window;
import android.view.SurfaceControl;
import android.window.IRemoteTransitionFinishedCallback;
import android.window.TransitionInfo;
/**
* Interface allowing remote processes to play transition animations.
* The usage flow is as follows:
* <p><ol>
* <li>The remote tags a lifecycle event with an IRemoteTransition (via a parameter in
* ActivityOptions#makeRemoteAnimation) or a transition matches a filter registered via
* Transitions#registerRemote.
* <li>Shell then associates the transition for the event with the IRemoteTransition
* <li>Shell receives onTransitionReady and delegates the animation to the IRemoteTransition
* via {@link #startAnimation}.
* <li>Once the IRemoteTransition is done animating, it will call the finishCallback.
* <li>Shell/Core finish-up the transition.
* </ul>
*
* {@hide}
*/
oneway interface IRemoteTransition {
/**
* Starts a transition animation. Once complete, the implementation should call
* `finishCallback`.
*
* @param token An identifier for the transition that should be animated.
*/
void startAnimation(in IBinder token, in TransitionInfo info, in SurfaceControl.Transaction t,
in IRemoteTransitionFinishedCallback finishCallback);
/**
* Attempts to merge a transition animation into the animation that is currently
* being played by this remote. If merge is not possible/supported, this should be a no-op.
* If it *is* merged, the implementation should call `finishCallback` immediately.
*
* @param transition An identifier for the transition that wants to be merged.
* @param mergeTarget The transition that is currently being animated by this remote.
* If it can be merged, call `finishCallback`; otherwise, do
* nothing.
*/
void mergeAnimation(in IBinder transition, in TransitionInfo info,
in SurfaceControl.Transaction t, in IBinder mergeTarget,
in IRemoteTransitionFinishedCallback finishCallback);
}
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