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/*
* Copyright (C) 2021 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 com.android.wm.shell.transition;
import android.annotation.NonNull;
import android.os.RemoteException;
import android.view.IRemoteAnimationFinishedCallback;
import android.view.IRemoteAnimationRunner;
import android.view.RemoteAnimationAdapter;
import android.view.RemoteAnimationTarget;
import android.view.SurfaceControl;
import android.view.WindowManager;
import android.window.IWindowContainerTransactionCallback;
/**
* Utilities and interfaces for transition-like usage on top of the legacy app-transition and
* synctransaction tools.
*/
public class LegacyTransitions {
/**
* Interface for a "legacy" transition. Effectively wraps a sync callback + remoteAnimation
* into one callback.
*/
public interface ILegacyTransition {
/**
* Called when both the associated sync transaction finishes and the remote animation is
* ready.
*/
void onAnimationStart(int transit, RemoteAnimationTarget[] apps,
RemoteAnimationTarget[] wallpapers, RemoteAnimationTarget[] nonApps,
IRemoteAnimationFinishedCallback finishedCallback, SurfaceControl.Transaction t);
}
/**
* Makes sure that a remote animation and corresponding sync callback are called together
* such that the sync callback is called first. This assumes that both the callback receiver
* and the remoteanimation are in the same process so that order is preserved on both ends.
*/
public static class LegacyTransition {
private final ILegacyTransition mLegacyTransition;
private int mSyncId = -1;
private SurfaceControl.Transaction mTransaction;
private int mTransit;
private RemoteAnimationTarget[] mApps;
private RemoteAnimationTarget[] mWallpapers;
private RemoteAnimationTarget[] mNonApps;
private IRemoteAnimationFinishedCallback mFinishCallback = null;
private boolean mCancelled = false;
private final SyncCallback mSyncCallback = new SyncCallback();
private final RemoteAnimationAdapter mAdapter =
new RemoteAnimationAdapter(new RemoteAnimationWrapper(), 0, 0);
public LegacyTransition(@WindowManager.TransitionType int type,
@NonNull ILegacyTransition legacyTransition) {
mLegacyTransition = legacyTransition;
mTransit = type;
}
public @WindowManager.TransitionType int getType() {
return mTransit;
}
public IWindowContainerTransactionCallback getSyncCallback() {
return mSyncCallback;
}
public RemoteAnimationAdapter getAdapter() {
return mAdapter;
}
private class SyncCallback extends IWindowContainerTransactionCallback.Stub {
@Override
public void onTransactionReady(int id, SurfaceControl.Transaction t)
throws RemoteException {
mSyncId = id;
mTransaction = t;
checkApply();
}
}
private class RemoteAnimationWrapper extends IRemoteAnimationRunner.Stub {
@Override
public void onAnimationStart(int transit, RemoteAnimationTarget[] apps,
RemoteAnimationTarget[] wallpapers, RemoteAnimationTarget[] nonApps,
IRemoteAnimationFinishedCallback finishedCallback) throws RemoteException {
mTransit = transit;
mApps = apps;
mWallpapers = wallpapers;
mNonApps = nonApps;
mFinishCallback = finishedCallback;
checkApply();
}
@Override
public void onAnimationCancelled() throws RemoteException {
mCancelled = true;
mApps = mWallpapers = mNonApps = null;
checkApply();
}
}
private void checkApply() throws RemoteException {
if (mSyncId < 0 || (mFinishCallback == null && !mCancelled)) return;
mLegacyTransition.onAnimationStart(mTransit, mApps, mWallpapers,
mNonApps, mFinishCallback, mTransaction);
}
}
}
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