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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.screenshot;
     18 
     19 import android.app.Service;
     20 import android.content.Intent;
     21 import android.os.Handler;
     22 import android.os.IBinder;
     23 import android.os.Message;
     24 import android.os.Messenger;
     25 import android.os.RemoteException;
     26 import android.os.UserManager;
     27 import android.util.Log;
     28 import android.view.WindowManager;
     29 
     30 public class TakeScreenshotService extends Service {
     31     private static final String TAG = "TakeScreenshotService";
     32 
     33     private static GlobalScreenshot mScreenshot;
     34 
     35     private Handler mHandler = new Handler() {
     36         @Override
     37         public void handleMessage(Message msg) {
     38             final Messenger callback = msg.replyTo;
     39             Runnable finisher = new Runnable() {
     40                 @Override
     41                 public void run() {
     42                     Message reply = Message.obtain(null, 1);
     43                     try {
     44                         callback.send(reply);
     45                     } catch (RemoteException e) {
     46                     }
     47                 }
     48             };
     49 
     50             // If the storage for this user is locked, we have no place to store
     51             // the screenshot, so skip taking it instead of showing a misleading
     52             // animation and error notification.
     53             if (!getSystemService(UserManager.class).isUserUnlocked()) {
     54                 Log.w(TAG, "Skipping screenshot because storage is locked!");
     55                 post(finisher);
     56                 return;
     57             }
     58 
     59             if (mScreenshot == null) {
     60                 mScreenshot = new GlobalScreenshot(TakeScreenshotService.this);
     61             }
     62 
     63             switch (msg.what) {
     64                 case WindowManager.TAKE_SCREENSHOT_FULLSCREEN:
     65                     mScreenshot.takeScreenshot(finisher, msg.arg1 > 0, msg.arg2 > 0);
     66                     break;
     67                 case WindowManager.TAKE_SCREENSHOT_SELECTED_REGION:
     68                     mScreenshot.takeScreenshotPartial(finisher, msg.arg1 > 0, msg.arg2 > 0);
     69                     break;
     70             }
     71         }
     72     };
     73 
     74     @Override
     75     public IBinder onBind(Intent intent) {
     76         return new Messenger(mHandler).getBinder();
     77     }
     78 
     79     @Override
     80     public boolean onUnbind(Intent intent) {
     81         if (mScreenshot != null) mScreenshot.stopScreenshot();
     82         return true;
     83     }
     84 }
     85