1 /* 2 * Copyright 2013 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 18 package com.example.android.batchstepsensor.cardstream; 19 20 import android.animation.ObjectAnimator; 21 import android.content.Context; 22 import android.view.View; 23 24 /** 25 * An abstract class which defines animators for CardStreamLinearLayout. 26 */ 27 abstract class CardStreamAnimator { 28 29 protected float mSpeedFactor = 1.f; 30 31 /** 32 * Set speed factor of animations. Higher value means longer duration & slow animation. 33 * 34 * @param speedFactor speed type 1: SLOW, 2: NORMAL, 3:FAST 35 */ setSpeedFactor(float speedFactor)36 public void setSpeedFactor(float speedFactor) { 37 mSpeedFactor = speedFactor; 38 } 39 40 /** 41 * Define initial animation of each child which fired when a user rotate a screen. 42 * 43 * @param context 44 * @return ObjectAnimator for initial animation 45 */ getInitalAnimator(Context context)46 public abstract ObjectAnimator getInitalAnimator(Context context); 47 48 /** 49 * Define disappearing animation of a child which fired when a view is removed programmatically 50 * 51 * @param context 52 * @return ObjectAnimator for disappearing animation 53 */ getDisappearingAnimator(Context context)54 public abstract ObjectAnimator getDisappearingAnimator(Context context); 55 56 /** 57 * Define appearing animation of a child which fired when a view is added programmatically 58 * 59 * @param context 60 * @return ObjectAnimator for appearing animation 61 */ getAppearingAnimator(Context context)62 public abstract ObjectAnimator getAppearingAnimator(Context context); 63 64 /** 65 * Define swipe-in (back to the origin position) animation of a child 66 * which fired when a view is not moved enough to be removed. 67 * 68 * @param view target view 69 * @param deltaX delta distance by x-axis 70 * @param deltaY delta distance by y-axis 71 * @return ObjectAnimator for swipe-in animation 72 */ getSwipeInAnimator(View view, float deltaX, float deltaY)73 public abstract ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY); 74 75 /** 76 * Define swipe-out animation of a child 77 * which fired when a view is removing by a user swipe action. 78 * 79 * @param view target view 80 * @param deltaX delta distance by x-axis 81 * @param deltaY delta distance by y-axis 82 * @return ObjectAnimator for swipe-out animation 83 */ getSwipeOutAnimator(View view, float deltaX, float deltaY)84 public abstract ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY); 85 86 /** 87 * A simple CardStreamAnimator implementation which is used to turn animations off. 88 */ 89 public static class EmptyAnimator extends CardStreamAnimator { 90 91 @Override getInitalAnimator(Context context)92 public ObjectAnimator getInitalAnimator(Context context) { 93 return null; 94 } 95 96 @Override getDisappearingAnimator(Context context)97 public ObjectAnimator getDisappearingAnimator(Context context) { 98 return null; 99 } 100 101 @Override getAppearingAnimator(Context context)102 public ObjectAnimator getAppearingAnimator(Context context) { 103 return null; 104 } 105 106 @Override getSwipeInAnimator(View view, float deltaX, float deltaY)107 public ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY) { 108 return null; 109 } 110 111 @Override getSwipeOutAnimator(View view, float deltaX, float deltaY)112 public ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY) { 113 return null; 114 } 115 } 116 117 } 118 119