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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 package org.chromium.content.browser;
      6 
      7 import android.annotation.SuppressLint;
      8 import android.app.Activity;
      9 import android.os.Build;
     10 import android.view.Gravity;
     11 import android.view.View;
     12 import android.view.ViewGroup;
     13 import android.view.WindowManager;
     14 import android.widget.FrameLayout;
     15 
     16 /**
     17  * Uses an existing Activity to handle displaying video in full screen.
     18  */
     19 public class ActivityContentVideoViewClient implements ContentVideoViewClient {
     20     private final Activity mActivity;
     21     private View mView;
     22 
     23     public ActivityContentVideoViewClient(Activity activity)  {
     24         this.mActivity = activity;
     25     }
     26 
     27     @Override
     28     public boolean onShowCustomView(View view) {
     29         FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
     30         decor.addView(view, 0,
     31             new FrameLayout.LayoutParams(
     32                     ViewGroup.LayoutParams.MATCH_PARENT,
     33                     ViewGroup.LayoutParams.MATCH_PARENT,
     34                     Gravity.CENTER));
     35         setSystemUiVisibility(decor, true);
     36         mView = view;
     37         return true;
     38     }
     39 
     40     @Override
     41     public void onDestroyContentVideoView() {
     42         FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
     43         decor.removeView(mView);
     44         setSystemUiVisibility(decor, false);
     45         mView = null;
     46     }
     47 
     48     @Override
     49     public View getVideoLoadingProgressView() {
     50         return null;
     51     }
     52 
     53     /**
     54      * Returns the system ui visibility after entering or exiting fullscreen.
     55      * @param view The decor view belongs to the activity window
     56      * @param enterFullscreen True if video is going fullscreen, or false otherwise.
     57      */
     58     @SuppressLint("InlinedApi")
     59     private void setSystemUiVisibility(View view, boolean enterFullscreen) {
     60         if (enterFullscreen) {
     61             mActivity.getWindow().setFlags(
     62                     WindowManager.LayoutParams.FLAG_FULLSCREEN,
     63                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
     64         } else {
     65             mActivity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
     66         }
     67         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
     68             return;
     69         }
     70 
     71         int systemUiVisibility = view.getSystemUiVisibility();
     72         int flags = View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
     73                 | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
     74                 | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
     75                 | View.SYSTEM_UI_FLAG_FULLSCREEN
     76                 | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
     77         if (enterFullscreen) {
     78             systemUiVisibility |= flags;
     79         } else {
     80             systemUiVisibility &= ~flags;
     81         }
     82         view.setSystemUiVisibility(systemUiVisibility);
     83     }
     84 }
     85