src/com/owncloud/android/media/MediaControlView.java

   1 /* ownCloud Android client application
   2  *
   3  *   Copyright (C) 2012-2013  ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18 package com.owncloud.android.media;
  19
  20 import android.content.Context;
  21 import android.media.MediaPlayer;
  22 import android.os.Handler;
  23 import android.os.Message;
  24 import android.util.AttributeSet;
  25 import android.view.KeyEvent;
  26 import android.view.LayoutInflater;
  27 import android.view.View;
  28 import android.view.View.OnClickListener;
  29 import android.view.ViewGroup;
  30 import android.view.accessibility.AccessibilityEvent;
  31 import android.view.accessibility.AccessibilityNodeInfo;
  32 import android.widget.FrameLayout;
  33 import android.widget.ImageButton;
  34 import android.widget.MediaController.MediaPlayerControl;
  35 import android.widget.ProgressBar;
  36 import android.widget.SeekBar;
  37 import android.widget.SeekBar.OnSeekBarChangeListener;
  38 import android.widget.TextView;
  39
  40 import java.util.Formatter;
  41 import java.util.Locale;
  42
  43 import com.owncloud.android.R;
  44
  45 /**
  46  * View containing controls for a {@link MediaPlayer}.
  47  *
  48  * Holds buttons "play / pause", "rewind", "fast forward"
  49  * and a progress slider.
  50  *
  51  * It synchronizes itself with the state of the
  52  * {@link MediaPlayer}.
  53  *
  54  * @author David A. Velasco
  55  */
  56
  57 public class MediaControlView extends FrameLayout /* implements OnLayoutChangeListener, OnTouchListener */ implements OnClickListener, OnSeekBarChangeListener {
  58
  59     private MediaPlayerControl  mPlayer;
  60     private Context             mContext;
  61     private View                mRoot;
  62     private ProgressBar         mProgress;
  63     private TextView            mEndTime, mCurrentTime;
  64     private boolean             mDragging;
  65     private static final int    SHOW_PROGRESS = 1;
  66     StringBuilder               mFormatBuilder;
  67     Formatter                   mFormatter;
  68     private ImageButton         mPauseButton;
  69     private ImageButton         mFfwdButton;
  70     private ImageButton         mRewButton;
  71
  72     public MediaControlView(Context context, AttributeSet attrs) {
  73         super(context, attrs);
  74         mContext = context;
  75
  76         FrameLayout.LayoutParams frameParams = new FrameLayout.LayoutParams(
  77                 ViewGroup.LayoutParams.MATCH_PARENT,
  78                 ViewGroup.LayoutParams.MATCH_PARENT
  79         );
  80         LayoutInflater inflate = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  81         mRoot = inflate.inflate(R.layout.media_control, null);
  82         initControllerView(mRoot);
  83         addView(mRoot, frameParams);
  84
  85         setFocusable(true);
  86         setFocusableInTouchMode(true);
  87         setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
  88         requestFocus();
  89     }
  90
  91     @Override
  92     public void onFinishInflate() {
  93         /*
  94         if (mRoot != null)
  95             initControllerView(mRoot);
  96          */
  97     }
  98
  99     /* TODO REMOVE
 100     public MediaControlView(Context context, boolean useFastForward) {
 101         super(context);
 102         mContext = context;
 103         mUseFastForward = useFastForward;
 104         initFloatingWindowLayout();
 105         //initFloatingWindow();
 106     }
 107     */
 108
 109     /* TODO REMOVE
 110     public MediaControlView(Context context) {
 111         this(context, true);
 112     }
 113     */
 114
 115     /* T
 116     private void initFloatingWindow() {
 117         mWindowManager = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
 118         mWindow = PolicyManager.makeNewWindow(mContext);
 119         mWindow.setWindowManager(mWindowManager, null, null);
 120         mWindow.requestFeature(Window.FEATURE_NO_TITLE);
 121         mDecor = mWindow.getDecorView();
 122         mDecor.setOnTouchListener(mTouchListener);
 123         mWindow.setContentView(this);
 124         mWindow.setBackgroundDrawableResource(android.R.color.transparent);
 125
 126         // While the media controller is up, the volume control keys should
 127         // affect the media stream type
 128         mWindow.setVolumeControlStream(AudioManager.STREAM_MUSIC);
 129
 130         setFocusable(true);
 131         setFocusableInTouchMode(true);
 132         setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
 133         requestFocus();
 134     }
 135     */
 136
 137     /*
 138     // Allocate and initialize the static parts of mDecorLayoutParams. Must
 139     // also call updateFloatingWindowLayout() to fill in the dynamic parts
 140     // (y and width) before mDecorLayoutParams can be used.
 141     private void initFloatingWindowLayout() {
 142         mDecorLayoutParams = new WindowManager.LayoutParams();
 143         WindowManager.LayoutParams p = mDecorLayoutParams;
 144         p.gravity = Gravity.TOP;
 145         p.height = LayoutParams.WRAP_CONTENT;
 146         p.x = 0;
 147         p.format = PixelFormat.TRANSLUCENT;
 148         p.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL;
 149         p.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
 150                 | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
 151                 | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH;
 152         p.token = null;
 153         p.windowAnimations = 0; // android.R.style.DropDownAnimationDown;
 154     }
 155     */
 156
 157     // Update the dynamic parts of mDecorLayoutParams
 158     // Must be called with mAnchor != NULL.
 159     /*
 160     private void updateFloatingWindowLayout() {
 161         int [] anchorPos = new int[2];
 162         mAnchor.getLocationOnScreen(anchorPos);
 163
 164         WindowManager.LayoutParams p = mDecorLayoutParams;
 165         p.width = mAnchor.getWidth();
 166         p.y = anchorPos[1] + mAnchor.getHeight();
 167     }
 168     */
 169
 170     /*
 171     // This is called whenever mAnchor's layout bound changes
 172     public void onLayoutChange(View v, int left, int top, int right,
 173             int bottom, int oldLeft, int oldTop, int oldRight,
 174             int oldBottom) {
 175         //updateFloatingWindowLayout();
 176         if (mShowing) {
 177             mWindowManager.updateViewLayout(mDecor, mDecorLayoutParams);
 178         }
 179     }
 180     */
 181
 182     /*
 183     public boolean onTouch(View v, MotionEvent event) {
 184         if (event.getAction() == MotionEvent.ACTION_DOWN) {
 185             if (mShowing) {
 186                 hide();
 187             }
 188         }
 189             return false;
 190     }
 191     */
 192
 193
 194     public void setMediaPlayer(MediaPlayerControl player) {
 195         mPlayer = player;
 196         mHandler.sendEmptyMessage(SHOW_PROGRESS);
 197         updatePausePlay();
 198     }
 199
 200
 201     private void initControllerView(View v) {
 202         mPauseButton = (ImageButton) v.findViewById(R.id.playBtn);
 203         if (mPauseButton != null) {
 204             mPauseButton.requestFocus();
 205             mPauseButton.setOnClickListener(this);
 206         }
 207
 208         mFfwdButton = (ImageButton) v.findViewById(R.id.forwardBtn);
 209         if (mFfwdButton != null) {
 210             mFfwdButton.setOnClickListener(this);
 211         }
 212
 213         mRewButton = (ImageButton) v.findViewById(R.id.rewindBtn);
 214         if (mRewButton != null) {
 215             mRewButton.setOnClickListener(this);
 216         }
 217
 218         mProgress = (ProgressBar) v.findViewById(R.id.progressBar);
 219         if (mProgress != null) {
 220             if (mProgress instanceof SeekBar) {
 221                 SeekBar seeker = (SeekBar) mProgress;
 222                 seeker.setOnSeekBarChangeListener(this);
 223             }
 224             mProgress.setMax(1000);
 225         }
 226
 227         mEndTime = (TextView) v.findViewById(R.id.totalTimeText);
 228         mCurrentTime = (TextView) v.findViewById(R.id.currentTimeText);
 229         mFormatBuilder = new StringBuilder();
 230         mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());
 231
 232     }
 233
 234
 235     /**
 236      * Disable pause or seek buttons if the stream cannot be paused or seeked.
 237      * This requires the control interface to be a MediaPlayerControlExt
 238      */
 239     private void disableUnsupportedButtons() {
 240         try {
 241             if (mPauseButton != null && !mPlayer.canPause()) {
 242                 mPauseButton.setEnabled(false);
 243             }
 244             if (mRewButton != null && !mPlayer.canSeekBackward()) {
 245                 mRewButton.setEnabled(false);
 246             }
 247             if (mFfwdButton != null && !mPlayer.canSeekForward()) {
 248                 mFfwdButton.setEnabled(false);
 249             }
 250         } catch (IncompatibleClassChangeError ex) {
 251             // We were given an old version of the interface, that doesn't have
 252             // the canPause/canSeekXYZ methods. This is OK, it just means we
 253             // assume the media can be paused and seeked, and so we don't disable
 254             // the buttons.
 255         }
 256     }
 257
 258
 259     private Handler mHandler = new Handler() {
 260         @Override
 261         public void handleMessage(Message msg) {
 262             int pos;
 263             switch (msg.what) {
 264                 case SHOW_PROGRESS:
 265                     pos = setProgress();
 266                     if (!mDragging) {
 267                         msg = obtainMessage(SHOW_PROGRESS);
 268                         sendMessageDelayed(msg, 1000 - (pos % 1000));
 269                     }
 270                     break;
 271             }
 272         }
 273     };
 274
 275     private String stringForTime(int timeMs) {
 276         int totalSeconds = timeMs / 1000;
 277
 278         int seconds = totalSeconds % 60;
 279         int minutes = (totalSeconds / 60) % 60;
 280         int hours   = totalSeconds / 3600;
 281
 282         mFormatBuilder.setLength(0);
 283         if (hours > 0) {
 284             return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();
 285         } else {
 286             return mFormatter.format("%02d:%02d", minutes, seconds).toString();
 287         }
 288     }
 289
 290     private int setProgress() {
 291         if (mPlayer == null || mDragging) {
 292             return 0;
 293         }
 294         int position = mPlayer.getCurrentPosition();
 295         int duration = mPlayer.getDuration();
 296         if (mProgress != null) {
 297             if (duration > 0) {
 298                 // use long to avoid overflow
 299                 long pos = 1000L * position / duration;
 300                 mProgress.setProgress( (int) pos);
 301             }
 302             int percent = mPlayer.getBufferPercentage();
 303             mProgress.setSecondaryProgress(percent * 10);
 304         }
 305
 306         if (mEndTime != null)
 307             mEndTime.setText(stringForTime(duration));
 308         if (mCurrentTime != null)
 309             mCurrentTime.setText(stringForTime(position));
 310
 311         return position;
 312     }
 313
 314
 315     @Override
 316     public boolean dispatchKeyEvent(KeyEvent event) {
 317         int keyCode = event.getKeyCode();
 318         final boolean uniqueDown = event.getRepeatCount() == 0
 319                 && event.getAction() == KeyEvent.ACTION_DOWN;
 320         if (keyCode ==  KeyEvent.KEYCODE_HEADSETHOOK
 321                 || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
 322                 || keyCode == KeyEvent.KEYCODE_SPACE) {
 323             if (uniqueDown) {
 324                 doPauseResume();
 325                 //show(sDefaultTimeout);
 326                 if (mPauseButton != null) {
 327                     mPauseButton.requestFocus();
 328                 }
 329             }
 330             return true;
 331         } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
 332             if (uniqueDown && !mPlayer.isPlaying()) {
 333                 mPlayer.start();
 334                 updatePausePlay();
 335                 //show(sDefaultTimeout);
 336             }
 337             return true;
 338         } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
 339                 || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
 340             if (uniqueDown && mPlayer.isPlaying()) {
 341                 mPlayer.pause();
 342                 updatePausePlay();
 343                 //show(sDefaultTimeout);
 344             }
 345             return true;
 346         }
 347
 348         //show(sDefaultTimeout);
 349         return super.dispatchKeyEvent(event);
 350     }
 351
 352     public void updatePausePlay() {
 353         if (mRoot == null || mPauseButton == null)
 354             return;
 355
 356         if (mPlayer.isPlaying()) {
 357             mPauseButton.setImageResource(android.R.drawable.ic_media_pause);
 358         } else {
 359             mPauseButton.setImageResource(android.R.drawable.ic_media_play);
 360         }
 361     }
 362
 363     private void doPauseResume() {
 364         if (mPlayer.isPlaying()) {
 365             mPlayer.pause();
 366         } else {
 367             mPlayer.start();
 368         }
 369         updatePausePlay();
 370     }
 371
 372     @Override
 373     public void setEnabled(boolean enabled) {
 374         if (mPauseButton != null) {
 375             mPauseButton.setEnabled(enabled);
 376         }
 377         if (mFfwdButton != null) {
 378             mFfwdButton.setEnabled(enabled);
 379         }
 380         if (mRewButton != null) {
 381             mRewButton.setEnabled(enabled);
 382         }
 383         if (mProgress != null) {
 384             mProgress.setEnabled(enabled);
 385         }
 386         disableUnsupportedButtons();
 387         super.setEnabled(enabled);
 388     }
 389
 390     @Override
 391     public void onClick(View v) {
 392         int pos;
 393         boolean playing = mPlayer.isPlaying();
 394         switch (v.getId()) {
 395
 396         case R.id.playBtn:
 397             doPauseResume();
 398             break;
 399
 400         case R.id.rewindBtn:
 401             pos = mPlayer.getCurrentPosition();
 402             pos -= 5000;
 403             mPlayer.seekTo(pos);
 404             if (!playing) mPlayer.pause();  // necessary in some 2.3.x devices
 405             setProgress();
 406             break;
 407
 408         case R.id.forwardBtn:
 409             pos = mPlayer.getCurrentPosition();
 410             pos += 15000;
 411             mPlayer.seekTo(pos);
 412             if (!playing) mPlayer.pause(); // necessary in some 2.3.x devices
 413             setProgress();
 414             break;
 415
 416         }
 417     }
 418
 419
 420     @Override
 421     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
 422         if (!fromUser) {
 423             // We're not interested in programmatically generated changes to
 424             // the progress bar's position.
 425             return;
 426         }
 427
 428         long duration = mPlayer.getDuration();
 429         long newposition = (duration * progress) / 1000L;
 430         mPlayer.seekTo( (int) newposition);
 431         if (mCurrentTime != null)
 432             mCurrentTime.setText(stringForTime( (int) newposition));
 433     }
 434
 435     /**
 436      * Called in devices with touchpad when the user starts to adjust the
 437      * position of the seekbar's thumb.
 438      *
 439      * Will be followed by several onProgressChanged notifications.
 440      */
 441     @Override
 442     public void onStartTrackingTouch(SeekBar seekBar) {
 443         mDragging = true;                           // monitors the duration of dragging
 444         mHandler.removeMessages(SHOW_PROGRESS);     // grants no more updates with media player progress while dragging
 445     }
 446
 447
 448     /**
 449      * Called in devices with touchpad when the user finishes the
 450      * adjusting of the seekbar.
 451      */
 452     @Override
 453     public void onStopTrackingTouch(SeekBar seekBar) {
 454         mDragging = false;
 455         setProgress();
 456         updatePausePlay();
 457         mHandler.sendEmptyMessage(SHOW_PROGRESS);    // grants future updates with media player progress
 458     }
 459
 460     @Override
 461     public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
 462         super.onInitializeAccessibilityEvent(event);
 463         event.setClassName(MediaControlView.class.getName());
 464     }
 465
 466     @Override
 467     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
 468         super.onInitializeAccessibilityNodeInfo(info);
 469         info.setClassName(MediaControlView.class.getName());
 470     }
 471
 472 }