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/*
* Copyright (C) 2016 The CyanogenMod Project
*
* 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 org.cyanogenmod.platform.internal;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Binder;
import android.os.FileUtils;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import com.android.server.SystemService;
import cyanogenmod.app.CMContextConstants;
import org.cyanogenmod.internal.themes.IIconCacheManager;
import org.cyanogenmod.internal.util.ThemeUtils;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Arrays;
import java.util.Comparator;
/** @hide */
public class IconCacheManagerService extends CMSystemService {
private static final String TAG = IconCacheManagerService.class.getSimpleName();
private static final long MAX_ICON_CACHE_SIZE = 33554432L; // 32MB
private static final long PURGED_ICON_CACHE_SIZE = 25165824L; // 24 MB
private long mIconCacheSize = 0L;
private Context mContext;
public IconCacheManagerService(Context context) {
super(context);
mContext = context;
}
@Override
public String getFeatureDeclaration() {
return CMContextConstants.Features.THEMES;
}
@Override
public void onStart() {
Log.d(TAG, "registerIconCache cmiconcache: " + this);
publishBinderService(CMContextConstants.CM_ICON_CACHE_SERVICE, mService);
}
private void purgeIconCache() {
Log.d(TAG, "Purging icon cahe of size " + mIconCacheSize);
File cacheDir = new File(ThemeUtils.SYSTEM_THEME_ICON_CACHE_DIR);
File[] files = cacheDir.listFiles();
Arrays.sort(files, mOldestFilesFirstComparator);
for (File f : files) {
if (!f.isDirectory()) {
final long size = f.length();
if(f.delete()) mIconCacheSize -= size;
}
if (mIconCacheSize <= PURGED_ICON_CACHE_SIZE) break;
}
}
private Comparator<File> mOldestFilesFirstComparator = new Comparator<File>() {
@Override
public int compare(File lhs, File rhs) {
return (int) (lhs.lastModified() - rhs.lastModified());
}
};
private IBinder mService = new IIconCacheManager.Stub() {
@Override
public boolean cacheComposedIcon(Bitmap icon, String fileName) throws RemoteException {
final long token = Binder.clearCallingIdentity();
boolean success;
FileOutputStream os;
final File cacheDir = new File(ThemeUtils.SYSTEM_THEME_ICON_CACHE_DIR);
if (cacheDir.listFiles().length == 0) {
mIconCacheSize = 0;
}
try {
File outFile = new File(cacheDir, fileName);
os = new FileOutputStream(outFile);
icon.compress(Bitmap.CompressFormat.PNG, 90, os);
os.close();
FileUtils.setPermissions(outFile,
FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH,
-1, -1);
mIconCacheSize += outFile.length();
if (mIconCacheSize > MAX_ICON_CACHE_SIZE) {
purgeIconCache();
}
success = true;
} catch (Exception e) {
success = false;
Log.w(TAG, "Unable to cache icon " + fileName, e);
}
Binder.restoreCallingIdentity(token);
return success;
}
};
}
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