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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.LauncherAnimUtils.VIEW_BACKGROUND_COLOR;
import static com.android.launcher3.anim.AnimatorPlaybackController.addAnimationHoldersRecur;
import android.animation.Animator;
import android.animation.Animator.AnimatorListener;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.TimeInterpolator;
import android.animation.ValueAnimator;
import android.graphics.drawable.ColorDrawable;
import android.util.FloatProperty;
import android.util.IntProperty;
import android.view.View;
import com.android.launcher3.anim.AnimatorPlaybackController.Holder;
import java.util.ArrayList;
import java.util.function.Consumer;
/**
* 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 implements PropertySetter {
private final ArrayList<Holder> mAnimHolders = new ArrayList<>();
private final AnimatorSet mAnim;
private final long mDuration;
private ValueAnimator mProgressAnimator;
public PendingAnimation(long duration) {
mDuration = duration;
mAnim = new AnimatorSet();
}
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);
}
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);
}
@Override
public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
if (view == null || view.getAlpha() == alpha) {
return;
}
ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha);
anim.addListener(new AlphaUpdateListener(view));
anim.setInterpolator(interpolator);
add(anim);
}
@Override
public void setViewBackgroundColor(View view, int color, TimeInterpolator interpolator) {
if (view == null || (view.getBackground() instanceof ColorDrawable
&& ((ColorDrawable) view.getBackground()).getColor() == color)) {
return;
}
ObjectAnimator anim = ObjectAnimator.ofArgb(view, VIEW_BACKGROUND_COLOR, color);
anim.setInterpolator(interpolator);
add(anim);
}
@Override
public <T> void setFloat(T target, FloatProperty<T> property, float value,
TimeInterpolator interpolator) {
if (property.get(target) == value) {
return;
}
Animator anim = ObjectAnimator.ofFloat(target, property, value);
anim.setDuration(mDuration).setInterpolator(interpolator);
add(anim);
}
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);
}
@Override
public <T> void setInt(T target, IntProperty<T> property, int value,
TimeInterpolator interpolator) {
if (property.get(target) == value) {
return;
}
Animator anim = ObjectAnimator.ofInt(target, property, value);
anim.setInterpolator(interpolator);
add(anim);
}
/**
* Adds a callback to be run on every frame of the animation
*/
public void addOnFrameCallback(Runnable runnable) {
addOnFrameListener(anim -> runnable.run());
}
/**
* Adds a listener to be run on every frame of the animation
*/
public void addOnFrameListener(ValueAnimator.AnimatorUpdateListener listener) {
if (mProgressAnimator == null) {
mProgressAnimator = ValueAnimator.ofFloat(0, 1);
}
mProgressAnimator.addUpdateListener(listener);
}
/**
* @see AnimatorSet#addListener(AnimatorListener)
*/
public void addListener(Animator.AnimatorListener listener) {
mAnim.addListener(listener);
}
/**
* Creates and returns the underlying AnimatorSet
*/
public AnimatorSet buildAnim() {
// Add progress animation to the end, so that frame callback is called after all the other
// animation update.
if (mProgressAnimator != null) {
add(mProgressAnimator);
mProgressAnimator = null;
}
if (mAnimHolders.isEmpty()) {
// Add a placeholder animation to that the duration is respected
add(ValueAnimator.ofFloat(0, 1).setDuration(mDuration));
}
return mAnim;
}
/**
* Creates a controller for this animation
*/
public AnimatorPlaybackController createPlaybackController() {
return new AnimatorPlaybackController(buildAnim(), mDuration, mAnimHolders);
}
/**
* Add a listener of receiving the success/failure callback in the end.
*/
public void addEndListener(Consumer<Boolean> listener) {
if (mProgressAnimator == null) {
mProgressAnimator = ValueAnimator.ofFloat(0, 1);
}
mProgressAnimator.addListener(AnimatorListeners.forEndCallback(listener));
}
}
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