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/*
* Copyright (C) 2021 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.quickstep.util;
import static com.android.launcher3.Utilities.dpToPx;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.PointF;
import android.graphics.RectF;
import android.util.PathParser;
import android.util.Property;
import android.view.animation.Interpolator;
import androidx.core.view.animation.PathInterpolatorCompat;
import androidx.dynamicanimation.animation.FloatPropertyCompat;
import androidx.dynamicanimation.animation.SpringAnimation;
import androidx.dynamicanimation.animation.SpringForce;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.util.DynamicResource;
import com.android.systemui.plugins.ResourceProvider;
import java.util.ArrayList;
import java.util.List;
/**
* Applies spring forces to animate from a starting rect to a target rect,
* while providing update callbacks to the caller.
*/
public class RectFSpringAnim2 extends RectFSpringAnim {
private static final FloatPropertyCompat<RectFSpringAnim2> RECT_CENTER_X =
new FloatPropertyCompat<RectFSpringAnim2>("rectCenterXSpring") {
@Override
public float getValue(RectFSpringAnim2 anim) {
return anim.mCurrentCenterX;
}
@Override
public void setValue(RectFSpringAnim2 anim, float currentCenterX) {
anim.mCurrentCenterX = currentCenterX;
anim.onUpdate();
}
};
private static final FloatPropertyCompat<RectFSpringAnim2> RECT_Y =
new FloatPropertyCompat<RectFSpringAnim2>("rectYSpring") {
@Override
public float getValue(RectFSpringAnim2 anim) {
return anim.mCurrentCenterY;
}
@Override
public void setValue(RectFSpringAnim2 anim, float y) {
anim.mCurrentCenterY = y;
anim.onUpdate();
}
};
private static final Property<RectFSpringAnim2, Float> PROGRESS =
new Property<RectFSpringAnim2, Float>(Float.class, "rectFProgress") {
@Override
public Float get(RectFSpringAnim2 rectFSpringAnim) {
return rectFSpringAnim.mProgress;
}
@Override
public void set(RectFSpringAnim2 rectFSpringAnim, Float progress) {
rectFSpringAnim.mProgress = progress;
rectFSpringAnim.onUpdate();
}
};
private final RectF mStartRect;
private final RectF mTargetRect;
private final RectF mCurrentRect = new RectF();
private final List<OnUpdateListener> mOnUpdateListeners = new ArrayList<>();
private final List<Animator.AnimatorListener> mAnimatorListeners = new ArrayList<>();
private float mCurrentCenterX;
private float mCurrentCenterY;
private float mTargetX;
private float mTargetY;
// If true, tracking the bottom of the rects, else tracking the top.
private float mProgress;
private SpringAnimation mRectXAnim;
private SpringAnimation mRectYAnim;
private ValueAnimator mRectScaleAnim;
private boolean mAnimsStarted;
private boolean mRectXAnimEnded;
private boolean mRectYAnimEnded;
private boolean mRectScaleAnimEnded;
private final float mXDamping;
private final float mXStiffness;
private final float mYDamping;
private float mYStiffness;
private long mDuration;
private final Interpolator mCloseInterpolator;
private AppCloseConfig mValues;
final float mStartRadius;
final float mEndRadius;
final float mHomeTransYEnd;
final float mScaleStart;
public RectFSpringAnim2(RectF startRect, RectF targetRect, Context context, float startRadius,
float endRadius) {
super(startRect, targetRect, context);
mStartRect = startRect;
mTargetRect = targetRect;
mCurrentCenterY = mStartRect.centerY();
mCurrentCenterX = mStartRect.centerX();
mTargetY = mTargetRect.centerY();
mTargetX = mTargetRect.centerX();
ResourceProvider rp = DynamicResource.provider(context);
mXDamping = rp.getFloat(R.dimen.swipe_up_rect_2_x_damping_ratio);
mXStiffness = rp.getFloat(R.dimen.swipe_up_rect_2_x_stiffness);
mYDamping = rp.getFloat(R.dimen.swipe_up_rect_2_y_damping_ratio);
mYStiffness = rp.getFloat(R.dimen.swipe_up_rect_2_y_stiffness);
mDuration = Math.round(rp.getFloat(R.dimen.swipe_up_duration));
mHomeTransYEnd = dpToPx(rp.getFloat(R.dimen.swipe_up_trans_y_dp));
mScaleStart = rp.getFloat(R.dimen.swipe_up_scale_start);
mCloseInterpolator = getAppCloseInterpolator(context);
// End on a "round-enough" radius so that the shape reveal doesn't have to do too much
// rounding at the end of the animation.
mStartRadius = startRadius;
mEndRadius = endRadius;
setCanRelease(true);
}
public void onTargetPositionChanged() {
if (mRectXAnim != null && mTargetX != mTargetRect.centerX()) {
mTargetX = mTargetRect.centerX();
mRectXAnim.animateToFinalPosition(mTargetX);
}
if (mRectYAnim != null) {
if (mTargetY != mTargetRect.centerY()) {
mTargetY = mTargetRect.centerY();
mRectYAnim.animateToFinalPosition(mTargetY);
}
}
}
public void addOnUpdateListener(OnUpdateListener onUpdateListener) {
mOnUpdateListeners.add(onUpdateListener);
}
public void addAnimatorListener(Animator.AnimatorListener animatorListener) {
mAnimatorListeners.add(animatorListener);
}
/**
* Starts the fling/spring animation.
* @param context The activity context.
* @param velocityPxPerMs Velocity of swipe in px/ms.
*/
public void start(Context context, PointF velocityPxPerMs) {
mRectXAnim = new SpringAnimation(this, RECT_CENTER_X)
.setStartValue(mCurrentCenterX)
.setStartVelocity(velocityPxPerMs.x * 1000)
.setSpring(new SpringForce(mTargetX)
.setStiffness(mXStiffness)
.setDampingRatio(mXDamping));
mRectXAnim.addEndListener(((animation, canceled, centerX, velocityX) -> {
mRectXAnimEnded = true;
maybeOnEnd();
}));
mRectYAnim = new SpringAnimation(this, RECT_Y)
.setStartValue(mCurrentCenterY)
.setStartVelocity(velocityPxPerMs.y * 1000)
.setSpring(new SpringForce(mTargetY)
.setStiffness(mYStiffness)
.setDampingRatio(mYDamping));
mRectYAnim.addEndListener(((animation, canceled, centerY, velocityY) -> {
mRectYAnimEnded = true;
maybeOnEnd();
}));
mRectScaleAnim = ObjectAnimator.ofFloat(this, PROGRESS, 0, 1f)
.setDuration(mDuration);
mRectScaleAnim.setInterpolator(mCloseInterpolator);
mRectScaleAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mRectScaleAnimEnded = true;
maybeOnEnd();
}
});
mValues = buildConfig();
mRectScaleAnim.addUpdateListener(mValues);
setCanRelease(false);
mAnimsStarted = true;
mRectXAnim.start();
mRectYAnim.start();
mRectScaleAnim.start();
for (Animator.AnimatorListener animatorListener : mAnimatorListeners) {
animatorListener.onAnimationStart(null);
}
}
private AppCloseConfig buildConfig() {
return new AppCloseConfig() {
FloatProp mHomeTransY = new FloatProp(0, mHomeTransYEnd, 0, mDuration, LINEAR);
FloatProp mHomeScale = new FloatProp(mScaleStart, 1f, 0, mDuration, LINEAR);
FloatProp mWindowFadeOut = new FloatProp(1f, 0f, 0, 116, LINEAR);
// There should be a slight overlap b/w window fading out and fg fading in.
// (fg startDelay < window fade out duration)
FloatProp mFgFadeIn = new FloatProp(0, 255f, 100, mDuration - 100, LINEAR);
FloatProp mRadius = new FloatProp(mStartRadius, mEndRadius, 0, mDuration, LINEAR);
FloatProp mThreePointInterpolation = new FloatProp(0, 1, 0, mDuration, LINEAR);
@Override
public float getWorkspaceTransY() {
return mHomeTransY.value;
}
@Override
public float getWorkspaceScale() {
return mHomeScale.value;
}
@Override
public float getWindowAlpha() {
return mWindowFadeOut.value;
}
@Override
public int getFgAlpha() {
return (int) mFgFadeIn.value;
}
@Override
public float getCornerRadius() {
return mRadius.value;
}
@Override
public float getInterpolatedProgress() {
return mThreePointInterpolation.value;
}
@Override
public void onUpdate(float percent) {}
};
}
public void end() {
if (mAnimsStarted) {
if (mRectXAnim.canSkipToEnd()) {
mRectXAnim.skipToEnd();
}
if (mRectYAnim.canSkipToEnd()) {
mRectYAnim.skipToEnd();
}
mRectScaleAnim.end();
}
mRectXAnimEnded = true;
mRectYAnimEnded = true;
mRectScaleAnimEnded = true;
maybeOnEnd();
}
private boolean isEnded() {
return mRectXAnimEnded && mRectYAnimEnded && mRectScaleAnimEnded;
}
private void onUpdate() {
if (isEnded()) {
// Prevent further updates from being called. This can happen between callbacks for
// ending the x/y/scale animations.
return;
}
if (!mOnUpdateListeners.isEmpty()) {
float rectProgress = mProgress;
float currentWidth = Utilities.mapRange(rectProgress, mStartRect.width(),
mTargetRect.width());
float currentHeight = Utilities.mapRange(rectProgress, mStartRect.height(),
mTargetRect.height());
mCurrentRect.set(mCurrentCenterX - currentWidth / 2,
mCurrentCenterY - currentHeight / 2,
mCurrentCenterX + currentWidth / 2,
mCurrentCenterY + currentHeight / 2);
float currentPlayTime = mRectScaleAnimEnded ? mRectScaleAnim.getDuration()
: mRectScaleAnim.getCurrentPlayTime();
float linearProgress = Math.min(1f, currentPlayTime / mRectScaleAnim.getDuration());
for (OnUpdateListener onUpdateListener : mOnUpdateListeners) {
onUpdateListener.onUpdate(mValues, mCurrentRect, linearProgress);
}
}
}
private void maybeOnEnd() {
if (mAnimsStarted && isEnded()) {
mAnimsStarted = false;
setCanRelease(true);
for (Animator.AnimatorListener animatorListener : mAnimatorListeners) {
animatorListener.onAnimationEnd(null);
}
}
}
public void cancel() {
if (mAnimsStarted) {
for (OnUpdateListener onUpdateListener : mOnUpdateListeners) {
onUpdateListener.onCancel();
}
}
end();
}
private Interpolator getAppCloseInterpolator(Context context) {
ResourceProvider rp = DynamicResource.provider(context);
String path = String.format("M 0,0 C %f, %f, %f, %f, %f, %f C %f, %f, %f, %f, 1, 1",
rp.getFloat(R.dimen.c1_a),
rp.getFloat(R.dimen.c1_b),
rp.getFloat(R.dimen.c1_c),
rp.getFloat(R.dimen.c1_d),
rp.getFloat(R.dimen.mp_x),
rp.getFloat(R.dimen.mp_y),
rp.getFloat(R.dimen.c2_a),
rp.getFloat(R.dimen.c2_b),
rp.getFloat(R.dimen.c2_c),
rp.getFloat(R.dimen.c2_d));
return PathInterpolatorCompat.create(PathParser.createPathFromPathData(path));
}
}