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      1 /*
      2  * Copyright (C) 2010 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.gallery3d.ui;
     18 
     19 import com.android.gallery3d.common.Utils;
     20 
     21 import android.os.Handler;
     22 import android.os.Message;
     23 
     24 public class SynchronizedHandler extends Handler {
     25 
     26     private final GLRoot mRoot;
     27 
     28     public SynchronizedHandler(GLRoot root) {
     29         mRoot = Utils.checkNotNull(root);
     30     }
     31 
     32     @Override
     33     public void dispatchMessage(Message message) {
     34         mRoot.lockRenderThread();
     35         try {
     36             super.dispatchMessage(message);
     37         } finally {
     38             mRoot.unlockRenderThread();
     39         }
     40     }
     41 }
     42