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/*
* Copyright (C) 2015 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.themes.provider.util;
import android.graphics.Bitmap;
import android.os.FileUtils;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
public class PreviewUtils {
private static final String TAG = PreviewUtils.class.getSimpleName();
public static final String PREVIEWS_DIR = "previews";
public static boolean dirExists(String dirPath) {
final File dir = new File(dirPath);
return dir.exists() && dir.isDirectory();
}
public static void createDirIfNotExists(String dirPath) {
if (!dirExists(dirPath)) {
File dir = new File(dirPath);
if (dir.mkdir()) {
FileUtils.setPermissions(dir, FileUtils.S_IRWXU |
FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, -1, -1);
}
}
}
public static String getPreviewsDir(String baseDir) {
return baseDir + File.separator + PREVIEWS_DIR;
}
private static String saveCompressedImage(byte[] image, String baseDir, String pkgName,
String fileName) {
if (image == null) return null;
// Create relevant directories
String previewsDir = PreviewUtils.getPreviewsDir(baseDir);
String pkgDir = previewsDir + File.separator + pkgName;
String filePath = pkgDir + File.separator + fileName;
PreviewUtils.createDirIfNotExists(previewsDir);
PreviewUtils.createDirIfNotExists(pkgDir);
// Save blob
FileOutputStream outputStream;
final File pkgPreviewDir = new File(pkgDir);
try {
File outFile = new File(pkgPreviewDir, fileName);
outputStream = new FileOutputStream(outFile);
outputStream.write(image);
outputStream.close();
FileUtils.setPermissions(outFile,
FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH,
-1, -1);
} catch (Exception e) {
Log.w(TAG, "Unable to save preview " + pkgName + File.separator + fileName, e);
filePath = null;
}
return filePath;
}
public static String compressAndSavePng(Bitmap bmp, String baseDir, String pkgName,
String fileName) {
byte[] image = BitmapUtils.getBitmapBlobPng(bmp);
return saveCompressedImage(image, baseDir, pkgName, fileName);
}
public static String compressAndSaveJpg(Bitmap bmp, String baseDir, String pkgName,
String fileName) {
byte[] image = BitmapUtils.getBitmapBlobJpg(bmp);
return saveCompressedImage(image, baseDir, pkgName, fileName);
}
}
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