Update packageName
[pub/Android/ownCloud.git] / src / com / owncloud / android / media / MediaControlView.java
diff --git a/src/com/owncloud/android/media/MediaControlView.java b/src/com/owncloud/android/media/MediaControlView.java
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+/* ownCloud Android client application
+ * 
+ *   Copyright (C) 2012-2013  ownCloud Inc.
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.owncloud.android.media;
+
+import android.content.Context;
+import android.media.MediaPlayer;
+import android.os.Handler;
+import android.os.Message;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityEvent;
+import android.view.accessibility.AccessibilityNodeInfo;
+import android.widget.FrameLayout;
+import android.widget.ImageButton;
+import android.widget.MediaController.MediaPlayerControl;
+import android.widget.ProgressBar;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.widget.TextView;
+
+import java.util.Formatter;
+import java.util.Locale;
+
+import com.owncloud.android.R;
+
+
+/**
+ * View containing controls for a {@link MediaPlayer}. 
+ * 
+ * Holds buttons "play / pause", "rewind", "fast forward" 
+ * and a progress slider. 
+ * 
+ * It synchronizes itself with the state of the 
+ * {@link MediaPlayer}.
+ * 
+ * @author David A. Velasco
+ */
+
+public class MediaControlView extends FrameLayout /* implements OnLayoutChangeListener, OnTouchListener */ implements OnClickListener, OnSeekBarChangeListener {
+
+    private MediaPlayerControl  mPlayer;
+    private Context             mContext;
+    private View                mRoot;
+    private ProgressBar         mProgress;
+    private TextView            mEndTime, mCurrentTime;
+    private boolean             mDragging;
+    private static final int    SHOW_PROGRESS = 1;
+    StringBuilder               mFormatBuilder;
+    Formatter                   mFormatter;
+    private ImageButton         mPauseButton;
+    private ImageButton         mFfwdButton;
+    private ImageButton         mRewButton;
+    
+    public MediaControlView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mContext = context;
+        
+        FrameLayout.LayoutParams frameParams = new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT
+        );
+        LayoutInflater inflate = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        mRoot = inflate.inflate(R.layout.media_control, null);
+        initControllerView(mRoot);
+        addView(mRoot, frameParams);
+        
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
+        requestFocus();
+    }
+
+    @Override
+    public void onFinishInflate() {
+        /*
+        if (mRoot != null)
+            initControllerView(mRoot);
+         */
+    }
+
+    /* TODO REMOVE
+    public MediaControlView(Context context, boolean useFastForward) {
+        super(context);
+        mContext = context;
+        mUseFastForward = useFastForward;
+        initFloatingWindowLayout();
+        //initFloatingWindow();
+    }
+    */
+
+    /* TODO REMOVE
+    public MediaControlView(Context context) {
+        this(context, true);
+    }
+    */
+    
+    /* T
+    private void initFloatingWindow() {
+        mWindowManager = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
+        mWindow = PolicyManager.makeNewWindow(mContext);
+        mWindow.setWindowManager(mWindowManager, null, null);
+        mWindow.requestFeature(Window.FEATURE_NO_TITLE);
+        mDecor = mWindow.getDecorView();
+        mDecor.setOnTouchListener(mTouchListener);
+        mWindow.setContentView(this);
+        mWindow.setBackgroundDrawableResource(android.R.color.transparent);
+        
+        // While the media controller is up, the volume control keys should
+        // affect the media stream type
+        mWindow.setVolumeControlStream(AudioManager.STREAM_MUSIC);
+
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
+        requestFocus();
+    }
+    */
+
+    /*
+    // Allocate and initialize the static parts of mDecorLayoutParams. Must
+    // also call updateFloatingWindowLayout() to fill in the dynamic parts
+    // (y and width) before mDecorLayoutParams can be used.
+    private void initFloatingWindowLayout() {
+        mDecorLayoutParams = new WindowManager.LayoutParams();
+        WindowManager.LayoutParams p = mDecorLayoutParams;
+        p.gravity = Gravity.TOP;
+        p.height = LayoutParams.WRAP_CONTENT;
+        p.x = 0;
+        p.format = PixelFormat.TRANSLUCENT;
+        p.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL;
+        p.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
+                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
+                | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH;
+        p.token = null;
+        p.windowAnimations = 0; // android.R.style.DropDownAnimationDown;
+    }
+    */
+
+    // Update the dynamic parts of mDecorLayoutParams
+    // Must be called with mAnchor != NULL.
+    /*
+    private void updateFloatingWindowLayout() {
+        int [] anchorPos = new int[2];
+        mAnchor.getLocationOnScreen(anchorPos);
+
+        WindowManager.LayoutParams p = mDecorLayoutParams;
+        p.width = mAnchor.getWidth();
+        p.y = anchorPos[1] + mAnchor.getHeight();
+    }
+    */
+
+    /*
+    // This is called whenever mAnchor's layout bound changes
+    public void onLayoutChange(View v, int left, int top, int right,
+            int bottom, int oldLeft, int oldTop, int oldRight,
+            int oldBottom) {
+        //updateFloatingWindowLayout();
+        if (mShowing) {
+            mWindowManager.updateViewLayout(mDecor, mDecorLayoutParams);
+        }
+    }
+    */
+    
+    /*
+    public boolean onTouch(View v, MotionEvent event) {
+        if (event.getAction() == MotionEvent.ACTION_DOWN) {
+            if (mShowing) {
+                hide();
+            }
+        }
+            return false;
+    }
+    */
+    
+    
+    public void setMediaPlayer(MediaPlayerControl player) {
+        mPlayer = player;
+        mHandler.sendEmptyMessage(SHOW_PROGRESS);
+        updatePausePlay();
+    }
+
+    
+    private void initControllerView(View v) {
+        mPauseButton = (ImageButton) v.findViewById(R.id.playBtn);
+        if (mPauseButton != null) {
+            mPauseButton.requestFocus();
+            mPauseButton.setOnClickListener(this);
+        }
+
+        mFfwdButton = (ImageButton) v.findViewById(R.id.forwardBtn);
+        if (mFfwdButton != null) {
+            mFfwdButton.setOnClickListener(this);
+        }
+
+        mRewButton = (ImageButton) v.findViewById(R.id.rewindBtn);
+        if (mRewButton != null) {
+            mRewButton.setOnClickListener(this);
+        }
+
+        mProgress = (ProgressBar) v.findViewById(R.id.progressBar);
+        if (mProgress != null) {
+            if (mProgress instanceof SeekBar) {
+                SeekBar seeker = (SeekBar) mProgress;
+                seeker.setOnSeekBarChangeListener(this);
+            }
+            mProgress.setMax(1000);
+        }
+
+        mEndTime = (TextView) v.findViewById(R.id.totalTimeText);
+        mCurrentTime = (TextView) v.findViewById(R.id.currentTimeText);
+        mFormatBuilder = new StringBuilder();
+        mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());
+
+    }
+
+    
+    /**
+     * Disable pause or seek buttons if the stream cannot be paused or seeked.
+     * This requires the control interface to be a MediaPlayerControlExt
+     */
+    private void disableUnsupportedButtons() {
+        try {
+            if (mPauseButton != null && !mPlayer.canPause()) {
+                mPauseButton.setEnabled(false);
+            }
+            if (mRewButton != null && !mPlayer.canSeekBackward()) {
+                mRewButton.setEnabled(false);
+            }
+            if (mFfwdButton != null && !mPlayer.canSeekForward()) {
+                mFfwdButton.setEnabled(false);
+            }
+        } catch (IncompatibleClassChangeError ex) {
+            // We were given an old version of the interface, that doesn't have
+            // the canPause/canSeekXYZ methods. This is OK, it just means we
+            // assume the media can be paused and seeked, and so we don't disable
+            // the buttons.
+        }
+    }
+    
+    
+    private Handler mHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            int pos;
+            switch (msg.what) {
+                case SHOW_PROGRESS:
+                    pos = setProgress();
+                    if (!mDragging) {
+                        msg = obtainMessage(SHOW_PROGRESS);
+                        sendMessageDelayed(msg, 1000 - (pos % 1000));
+                    }
+                    break;
+            }
+        }
+    };
+
+    private String stringForTime(int timeMs) {
+        int totalSeconds = timeMs / 1000;
+
+        int seconds = totalSeconds % 60;
+        int minutes = (totalSeconds / 60) % 60;
+        int hours   = totalSeconds / 3600;
+
+        mFormatBuilder.setLength(0);
+        if (hours > 0) {
+            return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();
+        } else {
+            return mFormatter.format("%02d:%02d", minutes, seconds).toString();
+        }
+    }
+
+    private int setProgress() {
+        if (mPlayer == null || mDragging) {
+            return 0;
+        }
+        int position = mPlayer.getCurrentPosition();
+        int duration = mPlayer.getDuration();
+        if (mProgress != null) {
+            if (duration > 0) {
+                // use long to avoid overflow
+                long pos = 1000L * position / duration;
+                mProgress.setProgress( (int) pos);
+            }
+            int percent = mPlayer.getBufferPercentage();
+            mProgress.setSecondaryProgress(percent * 10);
+        }
+
+        if (mEndTime != null)
+            mEndTime.setText(stringForTime(duration));
+        if (mCurrentTime != null)
+            mCurrentTime.setText(stringForTime(position));
+
+        return position;
+    }
+    
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        int keyCode = event.getKeyCode();
+        final boolean uniqueDown = event.getRepeatCount() == 0
+                && event.getAction() == KeyEvent.ACTION_DOWN;
+        if (keyCode ==  KeyEvent.KEYCODE_HEADSETHOOK
+                || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
+                || keyCode == KeyEvent.KEYCODE_SPACE) {
+            if (uniqueDown) {
+                doPauseResume();
+                //show(sDefaultTimeout);
+                if (mPauseButton != null) {
+                    mPauseButton.requestFocus();
+                }
+            }
+            return true;
+        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
+            if (uniqueDown && !mPlayer.isPlaying()) {
+                mPlayer.start();
+                updatePausePlay();
+                //show(sDefaultTimeout);
+            }
+            return true;
+        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
+                || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
+            if (uniqueDown && mPlayer.isPlaying()) {
+                mPlayer.pause();
+                updatePausePlay();
+                //show(sDefaultTimeout);
+            }
+            return true;
+        }
+
+        //show(sDefaultTimeout);
+        return super.dispatchKeyEvent(event);
+    }
+
+    public void updatePausePlay() {
+        if (mRoot == null || mPauseButton == null)
+            return;
+
+        if (mPlayer.isPlaying()) {
+            mPauseButton.setImageResource(android.R.drawable.ic_media_pause);
+        } else {
+            mPauseButton.setImageResource(android.R.drawable.ic_media_play);
+        }
+    }
+
+    private void doPauseResume() {
+        if (mPlayer.isPlaying()) {
+            mPlayer.pause();
+        } else {
+            mPlayer.start();
+        }
+        updatePausePlay();
+    }
+
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (mPauseButton != null) {
+            mPauseButton.setEnabled(enabled);
+        }
+        if (mFfwdButton != null) {
+            mFfwdButton.setEnabled(enabled);
+        }
+        if (mRewButton != null) {
+            mRewButton.setEnabled(enabled);
+        }
+        if (mProgress != null) {
+            mProgress.setEnabled(enabled);
+        }
+        disableUnsupportedButtons();
+        super.setEnabled(enabled);
+    }
+
+    @Override
+    public void onClick(View v) {
+        int pos;
+        boolean playing = mPlayer.isPlaying();
+        switch (v.getId()) {
+        
+        case R.id.playBtn: 
+            doPauseResume();
+            break;
+
+        case R.id.rewindBtn:
+            pos = mPlayer.getCurrentPosition();
+            pos -= 5000;
+            mPlayer.seekTo(pos);
+            if (!playing) mPlayer.pause();  // necessary in some 2.3.x devices 
+            setProgress();
+            break;
+
+        case R.id.forwardBtn:
+            pos = mPlayer.getCurrentPosition();
+            pos += 15000;
+            mPlayer.seekTo(pos);
+            if (!playing) mPlayer.pause(); // necessary in some 2.3.x devices
+            setProgress();
+            break;
+        
+        }
+    }
+    
+    
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        if (!fromUser) {
+            // We're not interested in programmatically generated changes to
+            // the progress bar's position.
+            return;
+        }
+
+        long duration = mPlayer.getDuration();
+        long newposition = (duration * progress) / 1000L;
+        mPlayer.seekTo( (int) newposition);
+        if (mCurrentTime != null)
+            mCurrentTime.setText(stringForTime( (int) newposition));
+    }
+    
+    /**
+     * Called in devices with touchpad when the user starts to adjust the 
+     * position of the seekbar's thumb.
+     * 
+     * Will be followed by several onProgressChanged notifications.
+     */
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+        mDragging = true;                           // monitors the duration of dragging 
+        mHandler.removeMessages(SHOW_PROGRESS);     // grants no more updates with media player progress while dragging 
+    }
+
+    
+    /**
+     * Called in devices with touchpad when the user finishes the
+     * adjusting of the seekbar.
+     */
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        mDragging = false;
+        setProgress();
+        updatePausePlay();
+        mHandler.sendEmptyMessage(SHOW_PROGRESS);    // grants future updates with media player progress 
+    }
+
+    @Override
+    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
+        super.onInitializeAccessibilityEvent(event);
+        event.setClassName(MediaControlView.class.getName());
+    }
+
+    @Override
+    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
+        super.onInitializeAccessibilityNodeInfo(info);
+        info.setClassName(MediaControlView.class.getName());
+    }
+    
+}