1 /* 2 * Copyright (C) 2011 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.deskclock.widget.multiwaveview; 18 19 import android.animation.Animator; 20 import android.animation.Animator.AnimatorListener; 21 import android.animation.AnimatorListenerAdapter; 22 import android.animation.ObjectAnimator; 23 import android.animation.PropertyValuesHolder; 24 import android.animation.TimeInterpolator; 25 import android.animation.ValueAnimator.AnimatorUpdateListener; 26 import android.util.Log; 27 28 import java.util.ArrayList; 29 import java.util.HashMap; 30 import java.util.Iterator; 31 import java.util.Map.Entry; 32 33 class Tweener { 34 private static final String TAG = "Tweener"; 35 private static final boolean DEBUG = false; 36 37 ObjectAnimator animator; 38 private static HashMap<Object, Tweener> sTweens = new HashMap<Object, Tweener>(); 39 Tweener(ObjectAnimator anim)40 public Tweener(ObjectAnimator anim) { 41 animator = anim; 42 } 43 remove(Animator animator)44 private static void remove(Animator animator) { 45 Iterator<Entry<Object, Tweener>> iter = sTweens.entrySet().iterator(); 46 while (iter.hasNext()) { 47 Entry<Object, Tweener> entry = iter.next(); 48 if (entry.getValue().animator == animator) { 49 if (DEBUG) Log.v(TAG, "Removing tweener " + sTweens.get(entry.getKey()) 50 + " sTweens.size() = " + sTweens.size()); 51 iter.remove(); 52 break; // an animator can only be attached to one object 53 } 54 } 55 } 56 to(Object object, long duration, Object... vars)57 public static Tweener to(Object object, long duration, Object... vars) { 58 long delay = 0; 59 AnimatorUpdateListener updateListener = null; 60 AnimatorListener listener = null; 61 TimeInterpolator interpolator = null; 62 63 // Iterate through arguments and discover properties to animate 64 ArrayList<PropertyValuesHolder> props = new ArrayList<PropertyValuesHolder>(vars.length/2); 65 for (int i = 0; i < vars.length; i+=2) { 66 if (!(vars[i] instanceof String)) { 67 throw new IllegalArgumentException("Key must be a string: " + vars[i]); 68 } 69 String key = (String) vars[i]; 70 Object value = vars[i+1]; 71 72 if ("simultaneousTween".equals(key)) { 73 // TODO 74 } else if ("ease".equals(key)) { 75 interpolator = (TimeInterpolator) value; // TODO: multiple interpolators? 76 } else if ("onUpdate".equals(key) || "onUpdateListener".equals(key)) { 77 updateListener = (AnimatorUpdateListener) value; 78 } else if ("onComplete".equals(key) || "onCompleteListener".equals(key)) { 79 listener = (AnimatorListener) value; 80 } else if ("delay".equals(key)) { 81 delay = ((Number) value).longValue(); 82 } else if ("syncWith".equals(key)) { 83 // TODO 84 } else if (value instanceof float[]) { 85 props.add(PropertyValuesHolder.ofFloat(key, 86 ((float[])value)[0], ((float[])value)[1])); 87 } else if (value instanceof int[]) { 88 props.add(PropertyValuesHolder.ofInt(key, 89 ((int[])value)[0], ((int[])value)[1])); 90 } else if (value instanceof Number) { 91 float floatValue = ((Number)value).floatValue(); 92 props.add(PropertyValuesHolder.ofFloat(key, floatValue)); 93 } else { 94 throw new IllegalArgumentException( 95 "Bad argument for key \"" + key + "\" with value " + value.getClass()); 96 } 97 } 98 99 // Re-use existing tween, if present 100 Tweener tween = sTweens.get(object); 101 ObjectAnimator anim = null; 102 if (tween == null) { 103 anim = ObjectAnimator.ofPropertyValuesHolder(object, 104 props.toArray(new PropertyValuesHolder[props.size()])); 105 tween = new Tweener(anim); 106 sTweens.put(object, tween); 107 if (DEBUG) Log.v(TAG, "Added new Tweener " + tween); 108 } else { 109 anim = sTweens.get(object).animator; 110 replace(props, object); // Cancel all animators for given object 111 } 112 113 if (interpolator != null) { 114 anim.setInterpolator(interpolator); 115 } 116 117 // Update animation with properties discovered in loop above 118 anim.setStartDelay(delay); 119 anim.setDuration(duration); 120 if (updateListener != null) { 121 anim.removeAllUpdateListeners(); // There should be only one 122 anim.addUpdateListener(updateListener); 123 } 124 if (listener != null) { 125 anim.removeAllListeners(); // There should be only one. 126 anim.addListener(listener); 127 } 128 anim.addListener(mCleanupListener); 129 130 return tween; 131 } 132 from(Object object, long duration, Object... vars)133 Tweener from(Object object, long duration, Object... vars) { 134 // TODO: for v of vars 135 // toVars[v] = object[v] 136 // object[v] = vars[v] 137 return Tweener.to(object, duration, vars); 138 } 139 140 // Listener to watch for completed animations and remove them. 141 private static AnimatorListener mCleanupListener = new AnimatorListenerAdapter() { 142 143 @Override 144 public void onAnimationEnd(Animator animation) { 145 remove(animation); 146 } 147 148 @Override 149 public void onAnimationCancel(Animator animation) { 150 remove(animation); 151 } 152 }; 153 reset()154 public static void reset() { 155 if (DEBUG) { 156 Log.v(TAG, "Reset()"); 157 if (sTweens.size() > 0) { 158 Log.v(TAG, "Cleaning up " + sTweens.size() + " animations"); 159 } 160 } 161 sTweens.clear(); 162 } 163 replace(ArrayList<PropertyValuesHolder> props, Object... args)164 private static void replace(ArrayList<PropertyValuesHolder> props, Object... args) { 165 for (final Object killobject : args) { 166 Tweener tween = sTweens.get(killobject); 167 if (tween != null) { 168 tween.animator.cancel(); 169 if (props != null) { 170 tween.animator.setValues( 171 props.toArray(new PropertyValuesHolder[props.size()])); 172 } else { 173 sTweens.remove(tween); 174 } 175 } 176 } 177 } 178 } 179