Home | History | Annotate | Download | only in widget 
      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.settings.widget;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.AnimatedRotateDrawable;
     21 import android.graphics.drawable.Drawable;
     22 import android.util.AttributeSet;
     23 import android.view.View;
     24 import android.widget.ImageView;
     25 
     26 public class AnimatedImageView extends ImageView {
     27     private AnimatedRotateDrawable mDrawable;
     28     private boolean mAnimating;
     29 
     30     public AnimatedImageView(Context context) {
     31         super(context);
     32     }
     33 
     34     public AnimatedImageView(Context context, AttributeSet attrs) {
     35         super(context, attrs);
     36     }
     37 
     38     private void updateDrawable() {
     39         if (isShown() && mDrawable != null) {
     40             mDrawable.stop();
     41         }
     42         final Drawable drawable = getDrawable();
     43         if (drawable instanceof AnimatedRotateDrawable) {
     44             mDrawable = (AnimatedRotateDrawable) drawable;
     45             // TODO: define in drawable xml once we have public attrs.
     46             mDrawable.setFramesCount(56);
     47             mDrawable.setFramesDuration(32);
     48             if (isShown() && mAnimating) {
     49                 mDrawable.start();
     50             }
     51         } else {
     52             mDrawable = null;
     53         }
     54     }
     55 
     56     private void updateAnimating() {
     57         if (mDrawable != null) {
     58             if (isShown() && mAnimating) {
     59                 mDrawable.start();
     60             } else {
     61                 mDrawable.stop();
     62             }
     63         }
     64     }
     65 
     66     @Override
     67     public void setImageDrawable(Drawable drawable) {
     68         super.setImageDrawable(drawable);
     69         updateDrawable();
     70     }
     71 
     72     @Override
     73     public void setImageResource(int resid) {
     74         super.setImageResource(resid);
     75         updateDrawable();
     76     }
     77 
     78     @Override
     79     public void onAttachedToWindow() {
     80         super.onAttachedToWindow();
     81         updateAnimating();
     82     }
     83 
     84     @Override
     85     public void onDetachedFromWindow() {
     86         super.onDetachedFromWindow();
     87         updateAnimating();
     88     }
     89 
     90     public void setAnimating(boolean animating) {
     91         mAnimating = animating;
     92         updateAnimating();
     93     }
     94 
     95     @Override
     96     protected void onVisibilityChanged(View changedView, int vis) {
     97         super.onVisibilityChanged(changedView, vis);
     98         updateAnimating();
     99     }
    100 }
    101