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/*
* Copyright (C) 2010 The Android Open Source 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 com.android.gallery3d.photoeditor;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Environment;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Images.ImageColumns;
import android.view.Gravity;
import android.widget.Toast;
import com.android.gallery3d.R;
import com.android.gallery3d.util.BucketNames;
import java.io.File;
import java.sql.Date;
import java.text.SimpleDateFormat;
/**
* Asynchronous task for saving edited photo as a new copy.
*/
public class SaveCopyTask extends AsyncTask<Bitmap, Void, Uri> {
/**
* Callback for the completed asynchronous task.
*/
public interface Callback {
void onComplete(Uri result);
}
private interface ContentResolverQueryCallback {
void onCursorResult(Cursor cursor);
}
private static final String TIME_STAMP_NAME = "'IMG'_yyyyMMdd_HHmmss";
private final Context context;
private final Uri sourceUri;
private final Callback callback;
private final String saveFileName;
private String saveFolderName;
public SaveCopyTask(Context context, Uri sourceUri, Callback callback) {
this.context = context;
this.sourceUri = sourceUri;
this.callback = callback;
saveFileName = new SimpleDateFormat(TIME_STAMP_NAME).format(
new Date(System.currentTimeMillis()));
}
/**
* The task should be executed with one given bitmap to be saved.
*/
@Override
protected Uri doInBackground(Bitmap... params) {
// TODO: Support larger dimensions for photo saving.
if (params[0] == null) {
return null;
}
// Use the default save directory if the source directory cannot be saved.
File saveDirectory = getSaveDirectory();
if ((saveDirectory == null) || !saveDirectory.canWrite()) {
saveDirectory = new File(Environment.getExternalStorageDirectory(),
BucketNames.DOWNLOAD);
saveFolderName = context.getString(R.string.folder_download);
} else {
saveFolderName = saveDirectory.getName();
}
Bitmap bitmap = params[0];
File file = new BitmapUtils(context).saveBitmap(
bitmap, saveDirectory, saveFileName, Bitmap.CompressFormat.JPEG);
Uri uri = (file != null) ? insertContent(file) : null;
bitmap.recycle();
return uri;
}
@Override
protected void onPostExecute(Uri result) {
String message = (result == null) ? context.getString(R.string.saving_failure)
: context.getString(R.string.photo_saved, saveFolderName);
Toast toast = Toast.makeText(context, message, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
callback.onComplete(result);
}
private void querySource(String[] projection, ContentResolverQueryCallback callback) {
ContentResolver contentResolver = context.getContentResolver();
Cursor cursor = null;
try {
cursor = contentResolver.query(sourceUri, projection, null, null, null);
if ((cursor != null) && cursor.moveToNext()) {
callback.onCursorResult(cursor);
}
} catch (Exception e) {
// Ignore error for lacking the data column from the source.
} finally {
if (cursor != null) {
cursor.close();
}
}
}
private File getSaveDirectory() {
final File[] dir = new File[1];
querySource(new String[] { ImageColumns.DATA }, new ContentResolverQueryCallback () {
@Override
public void onCursorResult(Cursor cursor) {
dir[0] = new File(cursor.getString(0)).getParentFile();
}
});
return dir[0];
}
/**
* Insert the content (saved file) with proper source photo properties.
*/
private Uri insertContent(File file) {
long now = System.currentTimeMillis() / 1000;
final ContentValues values = new ContentValues();
values.put(Images.Media.TITLE, saveFileName);
values.put(Images.Media.DISPLAY_NAME, file.getName());
values.put(Images.Media.MIME_TYPE, "image/jpeg");
values.put(Images.Media.DATE_TAKEN, now);
values.put(Images.Media.DATE_MODIFIED, now);
values.put(Images.Media.DATE_ADDED, now);
values.put(Images.Media.ORIENTATION, 0);
values.put(Images.Media.DATA, file.getAbsolutePath());
values.put(Images.Media.SIZE, file.length());
String[] projection = new String[] {
ImageColumns.DATE_TAKEN,
ImageColumns.LATITUDE,
ImageColumns.LONGITUDE,
};
querySource(projection, new ContentResolverQueryCallback() {
@Override
public void onCursorResult(Cursor cursor) {
values.put(Images.Media.DATE_TAKEN, cursor.getLong(0));
double latitude = cursor.getDouble(1);
double longitude = cursor.getDouble(2);
// TODO: Change || to && after the default location issue is fixed.
if ((latitude != 0f) || (longitude != 0f)) {
values.put(Images.Media.LATITUDE, latitude);
values.put(Images.Media.LONGITUDE, longitude);
}
}
});
return context.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values);
}
}
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