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
17package com.android.settings.widget;
18
19import android.content.Context;
20import android.graphics.drawable.AnimatedRotateDrawable;
21import android.graphics.drawable.Drawable;
22import android.util.AttributeSet;
23import android.view.View;
24import android.widget.ImageView;
25
26public 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