| /* |
| * Copyright (C) 2016 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.internal.view.animation; |
| |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.util.MathUtils; |
| import android.view.animation.AccelerateDecelerateInterpolator; |
| import android.view.animation.AccelerateInterpolator; |
| import android.view.animation.AnticipateInterpolator; |
| import android.view.animation.AnticipateOvershootInterpolator; |
| import android.view.animation.BaseInterpolator; |
| import android.view.animation.BounceInterpolator; |
| import android.view.animation.CycleInterpolator; |
| import android.view.animation.DecelerateInterpolator; |
| import android.view.animation.Interpolator; |
| import android.view.animation.LinearInterpolator; |
| import android.view.animation.OvershootInterpolator; |
| |
| /** |
| * Delegate used to provide new implementation of a select few methods of {@link |
| * NativeInterpolatorFactoryHelper} |
| * <p> |
| * Through the layoutlib_create tool, the original methods of NativeInterpolatorFactoryHelper have |
| * been replaced by calls to methods of the same name in this delegate class. |
| */ |
| @SuppressWarnings("unused") |
| public class NativeInterpolatorFactoryHelper_Delegate { |
| private static final DelegateManager<Interpolator> sManager = new DelegateManager<> |
| (Interpolator.class); |
| |
| public static Interpolator getDelegate(long nativePtr) { |
| return sManager.getDelegate(nativePtr); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createAccelerateDecelerateInterpolator() { |
| return sManager.addNewDelegate(new AccelerateDecelerateInterpolator()); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createAccelerateInterpolator(float factor) { |
| return sManager.addNewDelegate(new AccelerateInterpolator(factor)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createAnticipateInterpolator(float tension) { |
| return sManager.addNewDelegate(new AnticipateInterpolator(tension)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createAnticipateOvershootInterpolator(float tension) { |
| return sManager.addNewDelegate(new AnticipateOvershootInterpolator(tension)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createBounceInterpolator() { |
| return sManager.addNewDelegate(new BounceInterpolator()); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createCycleInterpolator(float cycles) { |
| return sManager.addNewDelegate(new CycleInterpolator(cycles)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createDecelerateInterpolator(float factor) { |
| return sManager.addNewDelegate(new DecelerateInterpolator(factor)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createLinearInterpolator() { |
| return sManager.addNewDelegate(new LinearInterpolator()); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createOvershootInterpolator(float tension) { |
| return sManager.addNewDelegate(new OvershootInterpolator(tension)); |
| } |
| |
| private static class LutInterpolator extends BaseInterpolator { |
| private final float[] mValues; |
| private final int mSize; |
| |
| private LutInterpolator(float[] values) { |
| mValues = values; |
| mSize = mValues.length; |
| } |
| |
| @Override |
| public float getInterpolation(float input) { |
| float lutpos = input * mSize; |
| if (lutpos >= (mSize - 1)) { |
| return mValues[mSize - 1]; |
| } |
| |
| int ipart = (int) lutpos; |
| float weight = lutpos - ipart; |
| |
| int i1 = ipart; |
| int i2 = Math.min(i1 + 1, mSize - 1); |
| |
| assert i1 >= 0 && i2 >= 0 : "Negatives in the interpolation"; |
| |
| return MathUtils.lerp(mValues[i1], mValues[i2], weight); |
| } |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long createLutInterpolator(float[] values) { |
| return sManager.addNewDelegate(new LutInterpolator(values)); |
| } |
| } |