/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.anim;
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import android.animation.Animator;
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import android.animation.ObjectAnimator;
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import android.animation.TimeInterpolator;
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import android.util.Property;
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import android.view.View;
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/**
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* Utility class for setting a property with or without animation
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*/
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public class PropertySetter {
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public static final PropertySetter NO_ANIM_PROPERTY_SETTER = new PropertySetter();
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public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
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if (view != null) {
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view.setAlpha(alpha);
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AlphaUpdateListener.updateVisibility(view);
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}
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}
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public <T> void setFloat(T target, Property<T, Float> property, float value,
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TimeInterpolator interpolator) {
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property.set(target, value);
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}
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public <T> void setInt(T target, Property<T, Integer> property, int value,
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TimeInterpolator interpolator) {
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property.set(target, value);
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}
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public static class AnimatedPropertySetter extends PropertySetter {
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private final long mDuration;
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private final AnimatorSetBuilder mStateAnimator;
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public AnimatedPropertySetter(long duration, AnimatorSetBuilder builder) {
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mDuration = duration;
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mStateAnimator = builder;
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}
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@Override
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public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
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if (view == null || view.getAlpha() == alpha) {
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return;
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}
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ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha);
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anim.addListener(new AlphaUpdateListener(view));
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anim.setDuration(mDuration).setInterpolator(interpolator);
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mStateAnimator.play(anim);
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}
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@Override
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public <T> void setFloat(T target, Property<T, Float> property, float value,
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TimeInterpolator interpolator) {
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if (property.get(target) == value) {
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return;
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}
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Animator anim = ObjectAnimator.ofFloat(target, property, value);
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anim.setDuration(mDuration).setInterpolator(interpolator);
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mStateAnimator.play(anim);
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}
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@Override
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public <T> void setInt(T target, Property<T, Integer> property, int value,
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TimeInterpolator interpolator) {
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if (property.get(target) == value) {
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return;
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}
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Animator anim = ObjectAnimator.ofInt(target, property, value);
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anim.setDuration(mDuration).setInterpolator(interpolator);
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mStateAnimator.play(anim);
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}
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}
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}
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