fr.eyal.datalib.sample.cache.BitmapMemoryLruCache.java Source code

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Here is the source code for fr.eyal.datalib.sample.cache.BitmapMemoryLruCache.java

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/*******************************************************************************
 * Copyright 2011, 2013 Chris Banes.
 * Copyright (C) 2012, 2013 Eyal LEZMY (http://www.eyal.fr)
 * 
 * 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 fr.eyal.datalib.sample.cache;

import java.util.Map.Entry;
import java.util.Set;

import fr.eyal.lib.util.Out;

import android.support.v4.util.LruCache;

public final class BitmapMemoryLruCache extends LruCache<String, CacheableBitmapDrawable> {

    public BitmapMemoryLruCache(int maxSize) {
        super(maxSize);
        Out.d("", "CACHE SIZE " + maxSize + " Ko");
    }

    public CacheableBitmapDrawable put(CacheableBitmapDrawable value) {
        if (null != value) {
            value.setCached(true);
            return put(value.getUrl(), value);
        }
        return null;
    }

    @Override
    protected int sizeOf(String key, CacheableBitmapDrawable value) {
        Out.d("", "CACHE SIZE ITEM " + key + ": " + value.getMemorySize() / 1024 + " Ko max:" + maxSize() / 1024
                + " size:" + size() / 1024);
        return value.getMemorySize();
    }

    @Override
    protected void entryRemoved(boolean evicted, String key, CacheableBitmapDrawable oldValue,
            CacheableBitmapDrawable newValue) {
        Out.d("", "CACHE REMOVE ITEM " + key);
        // Notify the wrapper that it's no longer being cached
        oldValue.setCached(false);
    }

    void trimMemory() {
        final Set<Entry<String, CacheableBitmapDrawable>> values = snapshot().entrySet();

        for (Entry<String, CacheableBitmapDrawable> entry : values) {
            CacheableBitmapDrawable value = entry.getValue();
            if (null == value || !value.isBeingDisplayed()) {
                remove(entry.getKey());
            }
        }
    }

}