1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.wm.shell.animation; 18 19 import android.view.animation.Interpolator; 20 import android.view.animation.LinearInterpolator; 21 import android.view.animation.PathInterpolator; 22 23 /** 24 * Common interpolators used in wm shell library. 25 */ 26 public class Interpolators { 27 28 public static final Interpolator LINEAR = new LinearInterpolator(); 29 30 /** 31 * Interpolator for alpha in animation. 32 */ 33 public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f); 34 35 /** 36 * Interpolator for alpha out animation. 37 */ 38 public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f); 39 40 /** 41 * Interpolator for fast out linear in animation. 42 */ 43 public static final Interpolator FAST_OUT_LINEAR_IN = new PathInterpolator(0.4f, 0f, 1f, 1f); 44 45 /** 46 * Interpolator for fast out slow in animation. 47 */ 48 public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f); 49 50 /** 51 * Interpolator for linear out slow in animation. 52 */ 53 public static final Interpolator LINEAR_OUT_SLOW_IN = new PathInterpolator(0f, 0f, 0.2f, 1f); 54 55 /** 56 * The accelerated emphasized interpolator. Used for hero / emphasized movement of content that 57 * is disappearing e.g. when moving off screen. 58 */ 59 public static final Interpolator EMPHASIZED_ACCELERATE = new PathInterpolator( 60 0.3f, 0f, 0.8f, 0.15f); 61 62 /** 63 * The decelerating emphasized interpolator. Used for hero / emphasized movement of content that 64 * is appearing e.g. when coming from off screen 65 */ 66 public static final Interpolator EMPHASIZED_DECELERATE = new PathInterpolator( 67 0.05f, 0.7f, 0.1f, 1f); 68 /** 69 * Interpolator to be used when animating a move based on a click. Pair with enough duration. 70 */ 71 public static final Interpolator TOUCH_RESPONSE = new PathInterpolator(0.3f, 0f, 0.1f, 1f); 72 73 /** 74 * Interpolator to be used when animating a panel closing. 75 */ 76 public static final Interpolator PANEL_CLOSE_ACCELERATED = 77 new PathInterpolator(0.3f, 0, 0.5f, 1); 78 79 public static final PathInterpolator SLOWDOWN_INTERPOLATOR = 80 new PathInterpolator(0.5f, 1f, 0.5f, 1f); 81 82 public static final PathInterpolator DIM_INTERPOLATOR = 83 new PathInterpolator(.23f, .87f, .52f, -0.11f); 84 } 85