| /* |
| * 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.anim; |
| |
| import static com.android.launcher3.anim.AnimatorPlaybackController.addAnimationHoldersRecur; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.TimeInterpolator; |
| import android.animation.ValueAnimator; |
| import android.util.FloatProperty; |
| |
| import com.android.launcher3.anim.AnimatorPlaybackController.Holder; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Utility class to keep track of a running animation. |
| * |
| * This class allows attaching end callbacks to an animation is intended to be used with |
| * {@link com.android.launcher3.anim.AnimatorPlaybackController}, since in that case |
| * AnimationListeners are not properly dispatched. |
| * |
| * TODO: Find a better name |
| */ |
| public class PendingAnimation extends AnimatedPropertySetter { |
| |
| private final ArrayList<Holder> mAnimHolders = new ArrayList<>(); |
| private final long mDuration; |
| |
| public PendingAnimation(long duration) { |
| mDuration = duration; |
| } |
| |
| public long getDuration() { |
| return mDuration; |
| } |
| |
| /** |
| * Utility method to sent an interpolator on an animation and add it to the list |
| */ |
| public void add(Animator anim, TimeInterpolator interpolator, SpringProperty springProperty) { |
| anim.setInterpolator(interpolator); |
| add(anim, springProperty); |
| } |
| |
| @Override |
| public void add(Animator anim) { |
| add(anim, SpringProperty.DEFAULT); |
| } |
| |
| public void add(Animator a, SpringProperty springProperty) { |
| mAnim.play(a.setDuration(mDuration)); |
| addAnimationHoldersRecur(a, mDuration, springProperty, mAnimHolders); |
| } |
| |
| /** |
| * Configures interpolator of the underlying AnimatorSet. |
| */ |
| public void setInterpolator(TimeInterpolator interpolator) { |
| mAnim.setInterpolator(interpolator); |
| } |
| |
| public <T> void addFloat(T target, FloatProperty<T> property, float from, float to, |
| TimeInterpolator interpolator) { |
| Animator anim = ObjectAnimator.ofFloat(target, property, from, to); |
| anim.setInterpolator(interpolator); |
| add(anim); |
| } |
| |
| /** |
| * Creates and returns the underlying AnimatorSet |
| */ |
| @Override |
| public AnimatorSet buildAnim() { |
| if (mAnimHolders.isEmpty()) { |
| // Add a placeholder animation to that the duration is respected |
| add(ValueAnimator.ofFloat(0, 1).setDuration(mDuration)); |
| } |
| return super.buildAnim(); |
| } |
| |
| /** |
| * Creates a controller for this animation |
| */ |
| public AnimatorPlaybackController createPlaybackController() { |
| return new AnimatorPlaybackController(buildAnim(), mDuration, mAnimHolders); |
| } |
| } |