BitmapContext.java

/*
 * Copyright (C) 2011 QSDN,Inc.
 * Copyright (C) 2011 Atsushi Konno
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jp.co.qsdn.android.jinbei3d.tls;

import android.graphics.Bitmap;

public abstract class BitmapContext {
  private static ThreadLocal instance = new ThreadLocal() {  
    protected Object initialValue() {  
      return null;  
    }  
  };

  public abstract Bitmap getBitmap();
  public abstract void setBitmap(Bitmap bmp);
    
  @SuppressWarnings("unchecked")
  public static BitmapContext instance() {
    BitmapContext ctx = (BitmapContext)instance.get();
    if (ctx != null) {
      return ctx;
    }
    instance.set(new BitmapContextImpl());
    return (BitmapContext)instance.get();
  }
}