InterruptibleInOutAnimator.java revision 472b281d5cb4f5660df981a6c912266b9f5703fe
1150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung/* 2150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * Copyright (C) 2010 The Android Open Source Project 3150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * 4150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * Licensed under the Apache License, Version 2.0 (the "License"); 5150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * you may not use this file except in compliance with the License. 6150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * You may obtain a copy of the License at 7150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * 8150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * http://www.apache.org/licenses/LICENSE-2.0 9150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * 10150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * Unless required by applicable law or agreed to in writing, software 11150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * distributed under the License is distributed on an "AS IS" BASIS, 12150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * See the License for the specific language governing permissions and 14150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * limitations under the License. 15150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung */ 16150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 17150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chungpackage com.android.launcher2; 18150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 194be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onoratoimport android.animation.Animator; 204be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onoratoimport android.animation.AnimatorListenerAdapter; 21472b281d5cb4f5660df981a6c912266b9f5703feChet Haaseimport android.animation.ObjectAnimator; 22150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chungimport android.animation.ValueAnimator; 23150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chungimport android.util.Log; 24150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 25150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung/** 26150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * A convenience class for two-way animations, e.g. a fadeIn/fadeOut animation. 27150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * With a regular ValueAnimator, if you call reverse to show the 'out' animation, you'll get 28150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * a frame-by-frame mirror of the 'in' animation -- i.e., the interpolated values will 29150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * be exactly reversed. Using this class, both the 'in' and the 'out' animation use the 30150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * interpolator in the same direction. 31150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung */ 32472b281d5cb4f5660df981a6c912266b9f5703feChet Haasepublic class InterruptibleInOutAnimator { 33150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung private long mOriginalDuration; 34472b281d5cb4f5660df981a6c912266b9f5703feChet Haase private float mOriginalFromValue; 35472b281d5cb4f5660df981a6c912266b9f5703feChet Haase private float mOriginalToValue; 36472b281d5cb4f5660df981a6c912266b9f5703feChet Haase private ValueAnimator mAnimator; 37150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 384be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato private boolean mFirstRun = true; 394be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato 404be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato private Object mTag = null; 414be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato 42fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy private static final int STOPPED = 0; 43fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy private static final int IN = 1; 44fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy private static final int OUT = 2; 45fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 46472b281d5cb4f5660df981a6c912266b9f5703feChet Haase 47fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy private int mDirection = STOPPED; 48fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 49472b281d5cb4f5660df981a6c912266b9f5703feChet Haase public InterruptibleInOutAnimator(long duration, float fromValue, float toValue) { 50472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator = ValueAnimator.ofFloat(fromValue, toValue).setDuration(duration); 51150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung mOriginalDuration = duration; 52150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung mOriginalFromValue = fromValue; 53150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung mOriginalToValue = toValue; 54150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung } 55150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 56fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy private void animate(int direction) { 57472b281d5cb4f5660df981a6c912266b9f5703feChet Haase final long currentPlayTime = mAnimator.getCurrentPlayTime(); 58472b281d5cb4f5660df981a6c912266b9f5703feChet Haase final float toValue = (direction == IN) ? mOriginalToValue : mOriginalFromValue; 59472b281d5cb4f5660df981a6c912266b9f5703feChet Haase final float startValue = mFirstRun ? mOriginalFromValue : 60472b281d5cb4f5660df981a6c912266b9f5703feChet Haase ((Float) mAnimator.getAnimatedValue()).floatValue(); 61fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 62fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy // Make sure it's stopped before we modify any values 63150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung cancel(); 64fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 654be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato if (startValue != toValue) { 66fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy mDirection = direction; 67472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator.setDuration(mOriginalDuration - currentPlayTime); 68472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator.setFloatValues(startValue, toValue); 69472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator.start(); 704be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato mFirstRun = false; 714be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato } 72150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung } 73150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 74fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy public void cancel() { 75472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator.cancel(); 76fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy mDirection = STOPPED; 77fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy } 78fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 79fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy public void end() { 80472b281d5cb4f5660df981a6c912266b9f5703feChet Haase mAnimator.end(); 81fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy mDirection = STOPPED; 82fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy } 83fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 84fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy /** 85fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy * Return true when the animation is not running and it hasn't even been started. 86fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy */ 87fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy public boolean isStopped() { 88fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy return mDirection == STOPPED; 89fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy } 90fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy 91150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung /** 92150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * This is the equivalent of calling Animator.start(), except that it can be called when 93150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * the animation is running in the opposite direction, in which case we reverse 94150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * direction and animate for a correspondingly shorter duration. 95150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung */ 96150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung public void animateIn() { 97fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy animate(IN); 98150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung } 99150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung 100150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung /** 101150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * This is the roughly the equivalent of calling Animator.reverse(), except that it uses the 102150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * same interpolation curve as animateIn(), rather than mirroring it. Also, like animateIn(), 103150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * if the animation is currently running in the opposite direction, we reverse 104150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung * direction and animate for a correspondingly shorter duration. 105150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung */ 106150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung public void animateOut() { 107fe6bd87881e47b9ff38f58bd083042ae0f6a39d7Patrick Dubroy animate(OUT); 1084be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato } 1094be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato 1104be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato public void setTag(Object tag) { 1114be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato mTag = tag; 1124be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato } 1134be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato 1144be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato public Object getTag() { 1154be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato return mTag; 116150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung } 117472b281d5cb4f5660df981a6c912266b9f5703feChet Haase 118472b281d5cb4f5660df981a6c912266b9f5703feChet Haase public ValueAnimator getAnimator() { 119472b281d5cb4f5660df981a6c912266b9f5703feChet Haase return mAnimator; 120472b281d5cb4f5660df981a6c912266b9f5703feChet Haase } 121150fbab7de7df45ce0e2d08fb0f0be87ff091c2fWinson Chung} 122