/*
* Copyright 2015 Google Inc.
*
* 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.amaze.filemanager.utils;
import android.animation.Animator;
import android.animation.TimeInterpolator;
import android.content.Context;
import android.util.ArrayMap;
import android.util.Property;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import java.util.ArrayList;
/**
* Utility methods for working with animations.
*/
public class AnimUtils {
private static Interpolator fastOutSlowIn;
private static Interpolator fastOutLinearIn;
private static Interpolator linearOutSlowIn;
public static Interpolator getFastOutSlowInInterpolator(Context context) {
if (fastOutSlowIn == null) {
fastOutSlowIn = AnimationUtils.loadInterpolator(context,
android.R.interpolator.fast_out_slow_in);
}
return fastOutSlowIn;
}
public static Interpolator getFastOutLinearInInterpolator(Context context) {
if (fastOutLinearIn == null) {
fastOutLinearIn = AnimationUtils.loadInterpolator(context,
android.R.interpolator.fast_out_linear_in);
}
return fastOutLinearIn;
}
public static Interpolator getLinearOutSlowInInterpolator(Context context) {
if (linearOutSlowIn == null) {
linearOutSlowIn = AnimationUtils.loadInterpolator(context,
android.R.interpolator.linear_out_slow_in);
}
return linearOutSlowIn;
}
/**
* Linear interpolate between a and b with parameter t.
*/
public static float lerp(float a, float b, float t) {
return a + (b - a) * t;
}
/**
* An implementation of {@link android.util.Property} to be used specifically with fields of
* type
* <code>float</code>. This type-specific subclass enables performance benefit by allowing
* calls to a {@link #set(Object, Float) set()} function that takes the primitive
* <code>float</code> type and avoids autoboxing and other overhead associated with the
* <code>Float</code> class.
*
* @param <T> The class on which the Property is declared.
**/
public static abstract class FloatProperty<T> extends Property<T, Float> {
public FloatProperty(String name) {
super(Float.class, name);
}
/**
* A type-specific override of the {@link #set(Object, Float)} that is faster when dealing
* with fields of type <code>float</code>.
*/
public abstract void setValue(T object, float value);
@Override
final public void set(T object, Float value) {
setValue(object, value);
}
}
/**
* An implementation of {@link android.util.Property} to be used specifically with fields of
* type
* <code>int</code>. This type-specific subclass enables performance benefit by allowing
* calls to a {@link #set(Object, Integer) set()} function that takes the primitive
* <code>int</code> type and avoids autoboxing and other overhead associated with the
* <code>Integer</code> class.
*
* @param <T> The class on which the Property is declared.
*/
public static abstract class IntProperty<T> extends Property<T, Integer> {
public IntProperty(String name) {
super(Integer.class, name);
}
/**
* A type-specific override of the {@link #set(Object, Integer)} that is faster when dealing
* with fields of type <code>int</code>.
*/
public abstract void setValue(T object, int value);
@Override
final public void set(T object, Integer value) {
setValue(object, value);
}
}
/**
* https://halfthought.wordpress.com/2014/11/07/reveal-transition/
* <p/>
* Interrupting Activity transitions can yield an OperationNotSupportedException when the
* transition tries to pause the animator. Yikes! We can fix this by wrapping the Animator:
*/
public static class NoPauseAnimator extends Animator {
private final Animator mAnimator;
private final ArrayMap<AnimatorListener, AnimatorListener> mListeners = new ArrayMap<>();
public NoPauseAnimator(Animator animator) {
mAnimator = animator;
}
@Override
public void addListener(AnimatorListener listener) {
AnimatorListener wrapper = new AnimatorListenerWrapper(this, listener);
if (!mListeners.containsKey(listener)) {
mListeners.put(listener, wrapper);
mAnimator.addListener(wrapper);
}
}
@Override
public void cancel() {
mAnimator.cancel();
}
@Override
public void end() {
mAnimator.end();
}
@Override
public long getDuration() {
return mAnimator.getDuration();
}
@Override
public TimeInterpolator getInterpolator() {
return mAnimator.getInterpolator();
}
@Override
public void setInterpolator(TimeInterpolator timeInterpolator) {
mAnimator.setInterpolator(timeInterpolator);
}
@Override
public ArrayList<AnimatorListener> getListeners() {
return new ArrayList<>(mListeners.keySet());
}
@Override
public long getStartDelay() {
return mAnimator.getStartDelay();
}
@Override
public void setStartDelay(long delayMS) {
mAnimator.setStartDelay(delayMS);
}
@Override
public boolean isPaused() {
return mAnimator.isPaused();
}
@Override
public boolean isRunning() {
return mAnimator.isRunning();
}
@Override
public boolean isStarted() {
return mAnimator.isStarted();
}
/* We don't want to override pause or resume methods because we don't want them
* to affect mAnimator.
public void pause();
public void resume();
public void addPauseListener(AnimatorPauseListener listener);
public void removePauseListener(AnimatorPauseListener listener);
*/
@Override
public void removeAllListeners() {
mListeners.clear();
mAnimator.removeAllListeners();
}
@Override
public void removeListener(AnimatorListener listener) {
AnimatorListener wrapper = mListeners.get(listener);
if (wrapper != null) {
mListeners.remove(listener);
mAnimator.removeListener(wrapper);
}
}
@Override
public Animator setDuration(long durationMS) {
mAnimator.setDuration(durationMS);
return this;
}
@Override
public void setTarget(Object target) {
mAnimator.setTarget(target);
}
@Override
public void setupEndValues() {
mAnimator.setupEndValues();
}
@Override
public void setupStartValues() {
mAnimator.setupStartValues();
}
@Override
public void start() {
mAnimator.start();
}
}
private static class AnimatorListenerWrapper implements Animator.AnimatorListener {
private final Animator mAnimator;
private final Animator.AnimatorListener mListener;
public AnimatorListenerWrapper(Animator animator, Animator.AnimatorListener listener) {
mAnimator = animator;
mListener = listener;
}
@Override
public void onAnimationStart(Animator animator) {
mListener.onAnimationStart(mAnimator);
}
@Override
public void onAnimationEnd(Animator animator) {
mListener.onAnimationEnd(mAnimator);
}
@Override
public void onAnimationCancel(Animator animator) {
mListener.onAnimationCancel(mAnimator);
}
@Override
public void onAnimationRepeat(Animator animator) {
mListener.onAnimationRepeat(mAnimator);
}
}
}