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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.messaging.ui;
import android.animation.ObjectAnimator;
import android.animation.TimeAnimator;
import android.animation.TimeAnimator.TimeListener;
import android.content.Context;
import android.graphics.drawable.ClipDrawable;
import android.graphics.drawable.Drawable;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.ProgressBar;
/**
* Shows a styled progress bar that is synchronized with the playback state of an audio attachment.
*/
public class AudioPlaybackProgressBar extends ProgressBar implements PlaybackStateView {
private long mDurationInMillis;
private final TimeAnimator mUpdateAnimator;
private long mCumulativeTime = 0;
private long mCurrentPlayStartTime = 0;
private boolean mIncoming = false;
public AudioPlaybackProgressBar(final Context context, final AttributeSet attrs) {
super(context, attrs);
mUpdateAnimator = new TimeAnimator();
mUpdateAnimator.setRepeatCount(ObjectAnimator.INFINITE);
mUpdateAnimator.setTimeListener(new TimeListener() {
@Override
public void onTimeUpdate(final TimeAnimator animation, final long totalTime,
final long deltaTime) {
int progress = 0;
if (mDurationInMillis > 0) {
progress = (int) (((mCumulativeTime + SystemClock.elapsedRealtime() -
mCurrentPlayStartTime) * 1.0f / mDurationInMillis) * 100);
progress = Math.max(Math.min(progress, 100), 0);
}
setProgress(progress);
}
});
updateAppearance();
}
/**
* Sets the duration of the audio that's being played, in milliseconds.
*/
public void setDuration(final long durationInMillis) {
mDurationInMillis = durationInMillis;
}
@Override
public void restart() {
reset();
resume();
}
@Override
public void reset() {
stopUpdateTicks();
setProgress(0);
mCumulativeTime = 0;
mCurrentPlayStartTime = 0;
}
@Override
public void resume() {
mCurrentPlayStartTime = SystemClock.elapsedRealtime();
startUpdateTicks();
}
@Override
public void pause() {
mCumulativeTime += SystemClock.elapsedRealtime() - mCurrentPlayStartTime;
stopUpdateTicks();
}
private void startUpdateTicks() {
if (!mUpdateAnimator.isStarted()) {
mUpdateAnimator.start();
}
}
private void stopUpdateTicks() {
if (mUpdateAnimator.isStarted()) {
mUpdateAnimator.end();
}
}
private void updateAppearance() {
final Drawable drawable =
ConversationDrawables.get().getAudioProgressDrawable(mIncoming);
final ClipDrawable clipDrawable = new ClipDrawable(drawable, Gravity.START,
ClipDrawable.HORIZONTAL);
setProgressDrawable(clipDrawable);
setBackground(ConversationDrawables.get()
.getAudioProgressBackgroundDrawable(mIncoming));
}
public void setVisualStyle(final boolean incoming) {
if (mIncoming != incoming) {
mIncoming = incoming;
updateAppearance();
}
}
}
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