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.content.res.TypedArray; 21 import android.graphics.drawable.AnimationDrawable; 22 import android.graphics.drawable.Drawable; 23 import android.util.AttributeSet; 24 import android.view.View; 25 import android.widget.ImageView; 26 import android.widget.RemoteViews.RemoteView; 27 28 import com.android.systemui.R; 29 30 @RemoteView 31 public class AnimatedImageView extends ImageView { 32 private final boolean mHasOverlappingRendering; 33 AnimationDrawable mAnim; 34 boolean mAttached; 35 private boolean mAllowAnimation = true; 36 37 // Tracks the last image that was set, so that we don't refresh the image if it is exactly 38 // the same as the previous one. If this is a resid, we track that. If it's a drawable, we 39 // track the hashcode of the drawable. 40 int mDrawableId; 41 AnimatedImageView(Context context)42 public AnimatedImageView(Context context) { 43 this(context, null); 44 } 45 AnimatedImageView(Context context, AttributeSet attrs)46 public AnimatedImageView(Context context, AttributeSet attrs) { 47 super(context, attrs); 48 TypedArray a = context.getTheme().obtainStyledAttributes(attrs, 49 R.styleable.AnimatedImageView, 0, 0); 50 51 try { 52 // Default to true, which is what View.java defaults toA 53 mHasOverlappingRendering = a.getBoolean( 54 R.styleable.AnimatedImageView_hasOverlappingRendering, true); 55 } finally { 56 a.recycle(); 57 } 58 } 59 setAllowAnimation(boolean allowAnimation)60 public void setAllowAnimation(boolean allowAnimation) { 61 if (mAllowAnimation != allowAnimation) { 62 mAllowAnimation = allowAnimation; 63 updateAnim(); 64 if (!mAllowAnimation && mAnim != null) { 65 // Reset drawable such that we show the first frame whenever we're not animating. 66 mAnim.setVisible(getVisibility() == VISIBLE, true /* restart */); 67 } 68 } 69 } 70 updateAnim()71 private void updateAnim() { 72 Drawable drawable = getDrawable(); 73 if (mAttached && mAnim != null) { 74 mAnim.stop(); 75 } 76 if (drawable instanceof AnimationDrawable) { 77 mAnim = (AnimationDrawable) drawable; 78 if (isShown() && mAllowAnimation) { 79 mAnim.start(); 80 } 81 } else { 82 mAnim = null; 83 } 84 } 85 86 @Override setImageDrawable(Drawable drawable)87 public void setImageDrawable(Drawable drawable) { 88 if (drawable != null) { 89 if (mDrawableId == drawable.hashCode()) return; 90 91 mDrawableId = drawable.hashCode(); 92 } else { 93 mDrawableId = 0; 94 } 95 super.setImageDrawable(drawable); 96 updateAnim(); 97 } 98 99 @Override 100 @android.view.RemotableViewMethod setImageResource(int resid)101 public void setImageResource(int resid) { 102 if (mDrawableId == resid) return; 103 104 mDrawableId = resid; 105 super.setImageResource(resid); 106 updateAnim(); 107 } 108 109 @Override onAttachedToWindow()110 public void onAttachedToWindow() { 111 super.onAttachedToWindow(); 112 mAttached = true; 113 updateAnim(); 114 } 115 116 @Override onDetachedFromWindow()117 public void onDetachedFromWindow() { 118 super.onDetachedFromWindow(); 119 if (mAnim != null) { 120 mAnim.stop(); 121 } 122 mAttached = false; 123 } 124 125 @Override onVisibilityChanged(View changedView, int vis)126 protected void onVisibilityChanged(View changedView, int vis) { 127 super.onVisibilityChanged(changedView, vis); 128 if (mAnim != null) { 129 if (isShown() && mAllowAnimation) { 130 mAnim.start(); 131 } else { 132 mAnim.stop(); 133 } 134 } 135 } 136 137 @Override hasOverlappingRendering()138 public boolean hasOverlappingRendering() { 139 return mHasOverlappingRendering; 140 } 141 } 142 143