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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.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.os.Trace;
import android.util.FloatProperty;
import com.android.launcher3.Utilities;
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);
}
/** If trace is enabled, add counter to trace animation progress. */
public void logAnimationProgressToTrace(String counterName) {
if (Utilities.ATLEAST_Q && Trace.isEnabled()) {
super.addOnFrameListener(
animation -> Trace.setCounter(
counterName, (long) (animation.getAnimatedFraction() * 100)));
}
}
/**
* 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);
}
}
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