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      1 /*
      2  * Copyright (C) 2016 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.systemui;
     18 
     19 import android.view.animation.AccelerateDecelerateInterpolator;
     20 import android.view.animation.AccelerateInterpolator;
     21 import android.view.animation.BounceInterpolator;
     22 import android.view.animation.DecelerateInterpolator;
     23 import android.view.animation.Interpolator;
     24 import android.view.animation.LinearInterpolator;
     25 import android.view.animation.PathInterpolator;
     26 
     27 import com.android.systemui.statusbar.notification.stack.HeadsUpAppearInterpolator;
     28 
     29 /**
     30  * Utility class to receive interpolators from
     31  */
     32 public class Interpolators {
     33     public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f);
     34 
     35     /**
     36      * Like {@link #FAST_OUT_SLOW_IN}, but used in case the animation is played in reverse (i.e. t
     37      * goes from 1 to 0 instead of 0 to 1).
     38      */
     39     public static final Interpolator FAST_OUT_SLOW_IN_REVERSE =
     40             new PathInterpolator(0.8f, 0f, 0.6f, 1f);
     41     public static final Interpolator FAST_OUT_LINEAR_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
     42     public static final Interpolator LINEAR_OUT_SLOW_IN = new PathInterpolator(0f, 0f, 0.2f, 1f);
     43     public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
     44     public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f);
     45     public static final Interpolator LINEAR = new LinearInterpolator();
     46     public static final Interpolator ACCELERATE = new AccelerateInterpolator();
     47     public static final Interpolator ACCELERATE_DECELERATE = new AccelerateDecelerateInterpolator();
     48     public static final Interpolator DECELERATE_QUINT = new DecelerateInterpolator(2.5f);
     49     public static final Interpolator CUSTOM_40_40 = new PathInterpolator(0.4f, 0f, 0.6f, 1f);
     50     public static final Interpolator HEADS_UP_APPEAR = new HeadsUpAppearInterpolator();
     51     public static final Interpolator ICON_OVERSHOT = new PathInterpolator(0.4f, 0f, 0.2f, 1.4f);
     52     public static final Interpolator PANEL_CLOSE_ACCELERATED
     53             = new PathInterpolator(0.3f, 0, 0.5f, 1);
     54     public static final Interpolator BOUNCE = new BounceInterpolator();
     55 
     56     /**
     57      * Interpolator to be used when animating a move based on a click. Pair with enough duration.
     58      */
     59     public static final Interpolator TOUCH_RESPONSE =
     60             new PathInterpolator(0.3f, 0f, 0.1f, 1f);
     61 
     62     /**
     63      * Like {@link #TOUCH_RESPONSE}, but used in case the animation is played in reverse (i.e. t
     64      * goes from 1 to 0 instead of 0 to 1).
     65      */
     66     public static final Interpolator TOUCH_RESPONSE_REVERSE =
     67             new PathInterpolator(0.9f, 0f, 0.7f, 1f);
     68 }
     69