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/*
* Copyright (C) 2016 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.settings.gestures;
import android.content.ContentResolver;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.SurfaceTexture;
import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.PreferenceViewHolder;
import android.view.View;
import android.view.Surface;
import android.view.TextureView;
import android.widget.ImageView;
import android.util.AttributeSet;
import android.util.Log;
import com.android.settings.R;
/**
* Preference item for a gesture with a switch to signify if it should be enabled.
* This shows the title and description of the gesture along with an animation showing how to do
* the gesture
*/
public final class GesturePreference extends SwitchPreference {
private static final String TAG = "GesturePreference";
private final Context mContext;
private Uri mVideoPath;
private MediaPlayer mMediaPlayer;
private boolean mAnimationAvailable;
private boolean mVideoReady;
private boolean mScrolling;
private int mPreviewResource;
public GesturePreference(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
TypedArray attributes = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.GesturePreference,
0, 0);
try {
int animation = attributes.getResourceId(R.styleable.GesturePreference_animation, 0);
mVideoPath = new Uri.Builder().scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
.authority(context.getPackageName())
.appendPath(String.valueOf(animation))
.build();
mMediaPlayer = MediaPlayer.create(mContext, mVideoPath);
if (mMediaPlayer != null && mMediaPlayer.getDuration() > 0) {
setLayoutResource(R.layout.gesture_preference);
mPreviewResource = attributes.getResourceId(
R.styleable.GesturePreference_preview, 0);
mMediaPlayer.setOnSeekCompleteListener(new MediaPlayer.OnSeekCompleteListener() {
@Override
public void onSeekComplete(MediaPlayer mp) {
mVideoReady = true;
}
});
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.setLooping(true);
}
});
mAnimationAvailable = true;
}
} catch (Exception e) {
Log.w(TAG, "Animation resource not found. Will not show animation.");
} finally {
attributes.recycle();
}
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
if (!mAnimationAvailable) {
return;
}
final TextureView video = (TextureView) holder.findViewById(R.id.gesture_video);
final ImageView imageView = (ImageView) holder.findViewById(R.id.gesture_image);
imageView.setImageResource(mPreviewResource);
final ImageView playButton = (ImageView) holder.findViewById(R.id.gesture_play_button);
video.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mMediaPlayer != null) {
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.pause();
playButton.setVisibility(View.VISIBLE);
} else {
mMediaPlayer.start();
playButton.setVisibility(View.GONE);
}
}
}
});
video.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width,
int height) {
if (mMediaPlayer != null) {
mMediaPlayer.setSurface(new Surface(surfaceTexture));
mVideoReady = false;
mMediaPlayer.seekTo(0);
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int width,
int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
imageView.setVisibility(View.VISIBLE);
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
if (mVideoReady && imageView.getVisibility() == View.VISIBLE) {
imageView.setVisibility(View.GONE);
} else if (mScrolling) {
mScrolling = false;
if (mMediaPlayer != null && mMediaPlayer.isPlaying()) {
mMediaPlayer.pause();
playButton.setVisibility(View.VISIBLE);
}
}
}
});
}
@Override
public void onDetached() {
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.reset();
mMediaPlayer.release();
}
super.onDetached();
}
void setScrolling(boolean scrolling) {
mScrolling = scrolling;
}
void onViewVisible() {
if (mVideoReady && mMediaPlayer != null && !mMediaPlayer.isPlaying()) {
mMediaPlayer.seekTo(0);
}
}
}
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