Enables fullscreen subtitle and media control from Blink

content/public/android/java/src/org/chromium/content/browser/ContentVideoViewLegacy.java

+// Copyright 2012 The Chromium Authors. All rights reserved.

[Ted C, 2013/12/26 23:06:15]

2013

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.content.browser;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+import android.widget.MediaController;
+
+public class ContentVideoViewLegacy extends ContentVideoView {

[Ted C, 2013/12/26 23:06:15]

needs a class level description

+    private MediaController mMediaController;
+    private boolean mCanPause;
+    private boolean mCanSeekBackward;
+    private boolean mCanSeekForward;
+    private int mCurrentBufferPercentage;
+
+    private static class FullScreenMediaController extends MediaController {
+
+        View mVideoView;
+
+        public FullScreenMediaController(Context context, View video) {
+            super(context);
+            mVideoView = video;
+        }
+
+        @Override
+        public void show() {
+            super.show();
+            if (mVideoView != null) {
+                mVideoView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
+            }
+        }
+
+        @Override
+        public void hide() {
+            if (mVideoView != null) {
+                mVideoView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
+            }
+            super.hide();
+        }
+    }
+
+    ContentVideoViewLegacy(Context context, long nativeContentVideoView,
+            ContentVideoViewClient client) {
+        super(context, nativeContentVideoView, client);
+        setBackgroundColor(Color.BLACK);
+        mCurrentBufferPercentage = 0;
+    }
+
+    @Override
+    protected void showContentVideoView() {
+        SurfaceView surfaceView = getSurfaceView();
+        surfaceView.setZOrderOnTop(true);
+        surfaceView.setOnKeyListener(new OnKeyListener() {
+            @Override
+            public boolean onKey(View v, int keyCode, KeyEvent event) {
+                boolean isKeyCodeSupported = keyCode != KeyEvent.KEYCODE_BACK &&
+                                             keyCode != KeyEvent.KEYCODE_VOLUME_UP &&

[Ted C, 2013/12/26 23:06:15]

Although this is moved code, these lines should be indented 8 from the start of
the line instead of lining it up.

+                                             keyCode != KeyEvent.KEYCODE_VOLUME_DOWN &&
+                                             keyCode != KeyEvent.KEYCODE_VOLUME_MUTE &&
+                                             keyCode != KeyEvent.KEYCODE_CALL &&
+                                             keyCode != KeyEvent.KEYCODE_MENU &&
+                                             keyCode != KeyEvent.KEYCODE_SEARCH &&
+                                             keyCode != KeyEvent.KEYCODE_ENDCALL;
+                if (isInPlaybackState() && isKeyCodeSupported && mMediaController != null) {
+                    if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK ||
+                            keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
+                        if (isPlaying()) {
+                            pause();
+                            mMediaController.show();
+                        } else {
+                            start();
+                            mMediaController.hide();
+                        }
+                        return true;
+                    } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
+                        if (!isPlaying()) {
+                            start();
+                            mMediaController.hide();
+                        }
+                        return true;
+                    } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
+                            || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
+                        if (isPlaying()) {
+                            pause();
+                            mMediaController.show();
+                        }
+                        return true;
+                    } else {
+                        toggleMediaControlsVisiblity();
+                    }
+                } else if (keyCode == KeyEvent.KEYCODE_BACK &&
+                        event.getAction() == KeyEvent.ACTION_UP) {
+                    exitFullscreen(false);
+                    return true;
+                } else if (keyCode == KeyEvent.KEYCODE_MENU || keyCode == KeyEvent.KEYCODE_SEARCH) {
+                    return true;
+                }
+                return false;
+            }
+        });
+        surfaceView.setOnTouchListener(new OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                if (isInPlaybackState() && mMediaController != null &&
+                        event.getAction() == MotionEvent.ACTION_DOWN) {
+                    toggleMediaControlsVisiblity();
+                }
+                return true;
+            }
+        });
+        surfaceView.setFocusable(true);
+        surfaceView.setFocusableInTouchMode(true);
+        surfaceView.requestFocus();
+        super.showContentVideoView();
+    }
+
+    @Override
+    public void onMediaPlayerError(int errorType) {
+        super.onMediaPlayerError(errorType);
+        if (errorType == MEDIA_ERROR_INVALID_CODE) {
+            return;

[Ted C, 2013/12/26 23:06:15]

this can probably all fit on a single line

+        }
+        if (mMediaController != null) {

[Ted C, 2013/12/26 23:06:15]

same

+            mMediaController.hide();
+        }
+    }
+
+    @Override
+    protected void onBufferingUpdate(int percent) {
+        super.onBufferingUpdate(percent);
+        mCurrentBufferPercentage = percent;
+    }
+
+    @Override
+    protected void onUpdateMediaMetadata(
+            int videoWidth,
+            int videoHeight,
+            int duration,
+            boolean canPause,
+            boolean canSeekBack,
+            boolean canSeekForward) {
+        super.onUpdateMediaMetadata(videoWidth, videoHeight, duration,
+                canPause, canSeekBack, canSeekForward);
+        mCanPause = canPause;
+        mCanSeekBackward = canSeekBack;
+        mCanSeekForward = canSeekForward;
+        if (mMediaController != null) {

[Ted C, 2013/12/26 23:06:15]

personally, I prefer to exit early in this case and reduce the indent of the
subsequent block:

if (mMediaController == null) return;

+            mMediaController.setEnabled(true);
+            // If paused , should show the controller forever.
+            if (isPlaying())

[Ted C, 2013/12/26 23:06:15]

braces required in java land

+                mMediaController.show();
+            else
+                mMediaController.show(0);
+        }
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        super.surfaceChanged(holder, format, width, height);
+        SurfaceView surfaceView = getSurfaceView();
+        surfaceView.setFocusable(true);
+        surfaceView.setFocusableInTouchMode(true);
+        if (isInPlaybackState() && mMediaController != null) {
+            mMediaController.show();
+        }
+    }
+
+    @Override
+    protected void openVideo() {
+        super.openVideo();
+
+        mCurrentBufferPercentage = 0;
+
+        if (mMediaController != null) {

[Ted C, 2013/12/26 23:06:15]

make a one liner here too

+            return;
+        }
+        mMediaController = new FullScreenMediaController(getContext(), this);
+        mMediaController.setMediaPlayer(new MediaController.MediaPlayerControl() {
+            @Override public boolean canPause() { return mCanPause; }
+            @Override public boolean canSeekBackward() { return mCanSeekBackward; }
+            @Override public boolean canSeekForward() { return mCanSeekForward; }
+            @Override public int getAudioSessionId() { return 0; }
+            @Override public int getBufferPercentage() { return mCurrentBufferPercentage; }
+
+            @Override
+            public int getCurrentPosition() {
+                return ContentVideoViewLegacy.this.getCurrentPosition();
+            }
+
+            @Override
+            public int getDuration() {
+                return ContentVideoViewLegacy.this.getDuration();
+            }
+
+            @Override
+            public boolean isPlaying() {
+                return ContentVideoViewLegacy.this.isPlaying();
+            }
+
+            @Override
+            public void pause() {
+                ContentVideoViewLegacy.this.pause();
+            }
+
+            @Override
+            public void seekTo(int pos) {
+                ContentVideoViewLegacy.this.seekTo(pos);
+            }
+
+            @Override
+            public void start() {
+                ContentVideoViewLegacy.this.start();
+            }
+        });
+        mMediaController.setAnchorView(getSurfaceView());
+        mMediaController.setEnabled(false);
+    }
+
+    @Override
+    protected void onCompletion() {
+        super.onCompletion();
+        if (mMediaController != null) {
+            mMediaController.hide();
+        }
+    }
+
+    @Override
+    public boolean onTrackballEvent(MotionEvent ev) {
+        if (isInPlaybackState() && mMediaController != null) {
+            toggleMediaControlsVisiblity();
+        }
+        return false;
+    }
+
+    private void toggleMediaControlsVisiblity() {
+        if (mMediaController.isShowing()) {
+            mMediaController.hide();
+        } else {
+            mMediaController.show();
+        }
+    }
+
+    @Override
+    protected void destroyContentVideoView(boolean nativeViewDestroyed) {
+        if (mMediaController != null) {
+            mMediaController.setEnabled(false);
+            mMediaController.hide();
+            mMediaController = null;
+        }
+        super.destroyContentVideoView(nativeViewDestroyed);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        return true;
+    }
+
+}