1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.quickstep.util; 17 18 import static com.android.quickstep.util.RemoteAnimationProvider.prepareTargetsForFirstFrame; 19 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING; 20 21 import android.animation.ValueAnimator; 22 import android.animation.ValueAnimator.AnimatorUpdateListener; 23 24 import com.android.systemui.shared.system.RemoteAnimationTargetCompat; 25 import com.android.systemui.shared.system.TransactionCompat; 26 27 /** 28 * Animation listener which fades out the closing targets 29 */ 30 public class RemoteFadeOutAnimationListener implements AnimatorUpdateListener { 31 32 private final RemoteAnimationTargetSet mTarget; 33 private boolean mFirstFrame = true; 34 35 public RemoteFadeOutAnimationListener(RemoteAnimationTargetCompat[] targets) { 36 mTarget = new RemoteAnimationTargetSet(targets, MODE_CLOSING); 37 } 38 39 @Override 40 public void onAnimationUpdate(ValueAnimator valueAnimator) { 41 TransactionCompat t = new TransactionCompat(); 42 if (mFirstFrame) { 43 prepareTargetsForFirstFrame(mTarget.unfilteredApps, t, MODE_CLOSING); 44 mFirstFrame = false; 45 } 46 47 float alpha = 1 - valueAnimator.getAnimatedFraction(); 48 for (RemoteAnimationTargetCompat app : mTarget.apps) { 49 t.setAlpha(app.leash, alpha); 50 } 51 t.apply(); 52 } 53 } 54
