1 /*
2  * Copyright (C) 2015 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.settingslib.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 
AnimatedImageView(Context context)30     public AnimatedImageView(Context context) {
31         super(context);
32     }
33 
AnimatedImageView(Context context, AttributeSet attrs)34     public AnimatedImageView(Context context, AttributeSet attrs) {
35         super(context, attrs);
36     }
37 
updateDrawable()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 
updateAnimating()56     private void updateAnimating() {
57         if (mDrawable != null) {
58             if (getVisibility() == View.VISIBLE && mAnimating) {
59                 mDrawable.start();
60             } else {
61                 mDrawable.stop();
62             }
63         }
64     }
65 
66     @Override
setImageDrawable(Drawable drawable)67     public void setImageDrawable(Drawable drawable) {
68         super.setImageDrawable(drawable);
69         updateDrawable();
70     }
71 
72     @Override
setImageResource(int resid)73     public void setImageResource(int resid) {
74         super.setImageResource(resid);
75         updateDrawable();
76     }
77 
78     @Override
onAttachedToWindow()79     public void onAttachedToWindow() {
80         super.onAttachedToWindow();
81         updateAnimating();
82     }
83 
84     @Override
onDetachedFromWindow()85     public void onDetachedFromWindow() {
86         super.onDetachedFromWindow();
87         updateAnimating();
88     }
89 
setAnimating(boolean animating)90     public void setAnimating(boolean animating) {
91         mAnimating = animating;
92         updateAnimating();
93     }
94 
95     @Override
onVisibilityChanged(View changedView, int vis)96     protected void onVisibilityChanged(View changedView, int vis) {
97         super.onVisibilityChanged(changedView, vis);
98         updateAnimating();
99     }
100 }
101