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/*
* Copyright (C) 2018 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.launcher3;
import static com.android.systemui.shared.recents.utilities.Utilities
.postAtFrontOfQueueAsynchronously;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Handler;
import android.support.annotation.BinderThread;
import android.support.annotation.UiThread;
import com.android.systemui.shared.system.RemoteAnimationRunnerCompat;
import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
@TargetApi(Build.VERSION_CODES.P)
public abstract class LauncherAnimationRunner extends AnimatorListenerAdapter
implements RemoteAnimationRunnerCompat {
private static final int REFRESH_RATE_MS = 16;
private final Handler mHandler;
private Runnable mSysFinishRunnable;
private AnimatorSet mAnimator;
public LauncherAnimationRunner(Handler handler) {
mHandler = handler;
}
@BinderThread
@Override
public void onAnimationStart(RemoteAnimationTargetCompat[] targetCompats, Runnable runnable) {
postAtFrontOfQueueAsynchronously(mHandler, () -> {
// Finish any previous animation
finishSystemAnimation();
mSysFinishRunnable = runnable;
mAnimator = getAnimator(targetCompats);
if (mAnimator == null) {
finishSystemAnimation();
return;
}
mAnimator.addListener(this);
mAnimator.start();
// Because t=0 has the app icon in its original spot, we can skip the
// first frame and have the same movement one frame earlier.
mAnimator.setCurrentPlayTime(REFRESH_RATE_MS);
});
}
@UiThread
public abstract AnimatorSet getAnimator(RemoteAnimationTargetCompat[] targetCompats);
@UiThread
@Override
public void onAnimationEnd(Animator animation) {
if (animation == mAnimator) {
mAnimator = null;
finishSystemAnimation();
}
}
/**
* Called by the system
*/
@BinderThread
@Override
public void onAnimationCancelled() {
postAtFrontOfQueueAsynchronously(mHandler, () -> {
if (mAnimator != null) {
mAnimator.removeListener(this);
mAnimator.end();
mAnimator = null;
}
});
}
@UiThread
private void finishSystemAnimation() {
if (mSysFinishRunnable != null) {
mSysFinishRunnable.run();
mSysFinishRunnable = null;
}
}
}
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