1 /* 2 * Copyright (C) 2008 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.statusbar; 18 19 import android.content.Context; 20 import android.graphics.drawable.AnimationDrawable; 21 import android.graphics.drawable.Drawable; 22 import android.util.AttributeSet; 23 import android.view.View; 24 import android.widget.ImageView; 25 import android.widget.RemoteViews.RemoteView; 26 27 @RemoteView 28 public class AnimatedImageView extends AlphaOptimizedImageView { 29 AnimationDrawable mAnim; 30 boolean mAttached; 31 32 // Tracks the last image that was set, so that we don't refresh the image if it is exactly 33 // the same as the previous one. If this is a resid, we track that. If it's a drawable, we 34 // track the hashcode of the drawable. 35 int mDrawableId; 36 AnimatedImageView(Context context)37 public AnimatedImageView(Context context) { 38 super(context); 39 } 40 AnimatedImageView(Context context, AttributeSet attrs)41 public AnimatedImageView(Context context, AttributeSet attrs) { 42 super(context, attrs); 43 } 44 updateAnim()45 private void updateAnim() { 46 Drawable drawable = getDrawable(); 47 if (mAttached && mAnim != null) { 48 mAnim.stop(); 49 } 50 if (drawable instanceof AnimationDrawable) { 51 mAnim = (AnimationDrawable) drawable; 52 if (isShown()) { 53 mAnim.start(); 54 } 55 } else { 56 mAnim = null; 57 } 58 } 59 60 @Override setImageDrawable(Drawable drawable)61 public void setImageDrawable(Drawable drawable) { 62 if (drawable != null) { 63 if (mDrawableId == drawable.hashCode()) return; 64 65 mDrawableId = drawable.hashCode(); 66 } else { 67 mDrawableId = 0; 68 } 69 super.setImageDrawable(drawable); 70 updateAnim(); 71 } 72 73 @Override 74 @android.view.RemotableViewMethod setImageResource(int resid)75 public void setImageResource(int resid) { 76 if (mDrawableId == resid) return; 77 78 mDrawableId = resid; 79 super.setImageResource(resid); 80 updateAnim(); 81 } 82 83 @Override onAttachedToWindow()84 public void onAttachedToWindow() { 85 super.onAttachedToWindow(); 86 mAttached = true; 87 updateAnim(); 88 } 89 90 @Override onDetachedFromWindow()91 public void onDetachedFromWindow() { 92 super.onDetachedFromWindow(); 93 if (mAnim != null) { 94 mAnim.stop(); 95 } 96 mAttached = false; 97 } 98 99 @Override onVisibilityChanged(View changedView, int vis)100 protected void onVisibilityChanged(View changedView, int vis) { 101 super.onVisibilityChanged(changedView, vis); 102 if (mAnim != null) { 103 if (isShown()) { 104 mAnim.start(); 105 } else { 106 mAnim.stop(); 107 } 108 } 109 } 110 } 111 112