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