com.robopupu.api.component.BitmapManagerImpl.java Source code

Introduction

Here is the source code for com.robopupu.api.component.BitmapManagerImpl.java

Source

/*
 * Copyright (C) 2001 - 2015 Marko Salmela, http://robopupu.com
 *
 * 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 com.robopupu.api.component;

import android.content.Context;
import android.graphics.Bitmap;
import android.support.v4.util.LruCache;
import android.util.Log;

import com.robopupu.api.dependency.D;
import com.robopupu.api.util.AppToolkit;
import com.robopupu.api.util.StringToolkit;
import com.robopupu.api.util.Utils;

import java.io.File;
import java.io.FileOutputStream;
import java.util.HashMap;

public class BitmapManagerImpl implements BitmapManager {

    private static final String TAG = Utils.tag(BitmapManagerImpl.class);

    private static final int DEFAULT_CACHE_SIZE = 50;
    private static final String NAME_DEFAULT_CACHE = "_DefaultCache";

    private HashMap<String, LruCache<String, Bitmap>> bitmapCaches;

    public BitmapManagerImpl() {
        addCache(NAME_DEFAULT_CACHE);
        bitmapCaches = new HashMap<>();
    }

    public Bitmap getBitmap(final int resId) {
        return getBitmap(NAME_DEFAULT_CACHE, resId);
    }

    public Bitmap getBitmap(final String cacheName, final int resId) {
        final LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);
        final String key = Integer.toString(resId);
        return cache.get(key);
    }

    public Bitmap getBitmap(final String key) {
        final LruCache<String, Bitmap> cache = bitmapCaches.get(NAME_DEFAULT_CACHE);
        return cache.get(key);
    }

    public LruCache<String, Bitmap> addCache(final String cacheName) {
        return addCache(cacheName, DEFAULT_CACHE_SIZE);
    }

    public LruCache<String, Bitmap> addCache(final String cacheName, final int cacheSize) {
        LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);

        assert (cache == null);

        cache = new LruCache<>(cacheSize);
        bitmapCaches.put(cacheName, cache);
        return cache;
    }

    public void clearCache() {
        clearCache(NAME_DEFAULT_CACHE);
    }

    public void clearCache(final String cacheName) {
        final LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);
        final int cacheSize = cache.maxSize();
        cache.trimToSize(0);
        cache.trimToSize(cacheSize);
    }

    public int getCacheSize() {
        return getCacheSize(NAME_DEFAULT_CACHE);
    }

    public int getCacheSize(final String cacheName) {
        final LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);
        return cache.maxSize();
    }

    public void resizeCache(final String cacheName, final int newSize) {
        final LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);
        cache.trimToSize(newSize);
    }

    public void removeCache(final String cacheName) {
        bitmapCaches.remove(cacheName);
    }

    public void clearAllCaches() {
        for (final String key : bitmapCaches.keySet()) {
            clearCache(key);
        }
    }

    public void dispose() {
        clearAllCaches();
        bitmapCaches.clear();
    }

    public void addBitmap(final int resId, final Bitmap bitmap) {
        addBitmap(resId, NAME_DEFAULT_CACHE, bitmap);
    }

    public void addBitmap(final String key, final Bitmap bitmap) {
        addBitmap(key, NAME_DEFAULT_CACHE, bitmap);
    }

    public void addBitmap(final int resId, final String cacheName, final Bitmap bitmap) {
        final String key = Integer.toString(resId);
        addBitmap(key, cacheName, bitmap, false);
    }

    public void addBitmap(final String key, final String cacheName, final Bitmap bitmap) {
        addBitmap(key, cacheName, bitmap, true);
    }

    private void addBitmap(final String key, final String cacheName, final Bitmap bitmap,
            final boolean useFileCaching) {
        LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);

        if (cache == null) {
            cache = addCache(cacheName);
        }

        cache.put(key, bitmap);

        if (useFileCaching) {
            final Context context = D.get(Context.class);
            final String applicationDirectory = AppToolkit.getApplicationDirectoryPath(context);
            final StringBuilder path = new StringBuilder();
            path.append(applicationDirectory);
            path.append("/");
            path.append(StringToolkit.encodeFileName(cacheName));

            final File cacheDirectory = new File(path.toString());

            if (!cacheDirectory.exists()) {
                if (!cacheDirectory.mkdirs()) {
                    throw new IllegalStateException("Failed to create the cache directory");
                }
            }
            path.append("/");
            path.append(StringToolkit.encodeFileName(key));

            try {
                final FileOutputStream outputStream = new FileOutputStream(path.toString());
                bitmap.compress(Bitmap.CompressFormat.PNG, 90, outputStream);
            } catch (Exception e) {
                Log.d(TAG, "Failed to cache a pitmap: " + path);
            }
        }
    }
}