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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.widget;
import com.android.gallery3d.common.Utils;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.util.Log;
import java.io.ByteArrayOutputStream;
public class WidgetDatabaseHelper extends SQLiteOpenHelper {
private static final String TAG = "PhotoDatabaseHelper";
private static final String DATABASE_NAME = "launcher.db";
private static final int DATABASE_VERSION = 4;
private static final String TABLE_WIDGETS = "widgets";
private static final String FIELD_APPWIDGET_ID = "appWidgetId";
private static final String FIELD_IMAGE_URI = "imageUri";
private static final String FIELD_PHOTO_BLOB = "photoBlob";
private static final String FIELD_WIDGET_TYPE = "widgetType";
private static final String FIELD_ALBUM_PATH = "albumPath";
public static final int TYPE_SINGLE_PHOTO = 0;
public static final int TYPE_SHUFFLE = 1;
public static final int TYPE_ALBUM = 2;
private static final String[] PROJECTION = {
FIELD_WIDGET_TYPE, FIELD_IMAGE_URI, FIELD_PHOTO_BLOB, FIELD_ALBUM_PATH};
private static final int INDEX_WIDGET_TYPE = 0;
private static final int INDEX_IMAGE_URI = 1;
private static final int INDEX_PHOTO_BLOB = 2;
private static final int INDEX_ALBUM_PATH = 3;
private static final String WHERE_CLAUSE = FIELD_APPWIDGET_ID + " = ?";
public static class Entry {
public int widgetId;
public int type;
public Uri imageUri;
public Bitmap image;
public String albumPath;
private Entry(int id, Cursor cursor) {
widgetId = id;
type = cursor.getInt(INDEX_WIDGET_TYPE);
if (type == TYPE_SINGLE_PHOTO) {
imageUri = Uri.parse(cursor.getString(INDEX_IMAGE_URI));
image = loadBitmap(cursor, INDEX_PHOTO_BLOB);
} else if (type == TYPE_ALBUM) {
albumPath = cursor.getString(INDEX_ALBUM_PATH);
}
}
}
public WidgetDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + TABLE_WIDGETS + " ("
+ FIELD_APPWIDGET_ID + " INTEGER PRIMARY KEY, "
+ FIELD_WIDGET_TYPE + " INTEGER DEFAULT 0, "
+ FIELD_IMAGE_URI + " TEXT, "
+ FIELD_ALBUM_PATH + " TEXT, "
+ FIELD_PHOTO_BLOB + " BLOB)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
int version = oldVersion;
if (version != DATABASE_VERSION) {
Log.w(TAG, "destroying all old data.");
// Table "photos" is renamed to "widget" in version 4
db.execSQL("DROP TABLE IF EXISTS photos");
db.execSQL("DROP TABLE IF EXISTS " + TABLE_WIDGETS);
onCreate(db);
}
}
/**
* Store the given bitmap in this database for the given appWidgetId.
*/
public boolean setPhoto(int appWidgetId, Uri imageUri, Bitmap bitmap) {
try {
// Try go guesstimate how much space the icon will take when
// serialized to avoid unnecessary allocations/copies during
// the write.
int size = bitmap.getWidth() * bitmap.getHeight() * 4;
ByteArrayOutputStream out = new ByteArrayOutputStream(size);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.close();
ContentValues values = new ContentValues();
values.put(FIELD_APPWIDGET_ID, appWidgetId);
values.put(FIELD_WIDGET_TYPE, TYPE_SINGLE_PHOTO);
values.put(FIELD_IMAGE_URI, imageUri.toString());
values.put(FIELD_PHOTO_BLOB, out.toByteArray());
SQLiteDatabase db = getWritableDatabase();
db.replaceOrThrow(TABLE_WIDGETS, null, values);
return true;
} catch (Throwable e) {
Log.e(TAG, "set widget photo fail", e);
return false;
}
}
public boolean setWidget(int id, int type, String albumPath) {
try {
ContentValues values = new ContentValues();
values.put(FIELD_APPWIDGET_ID, id);
values.put(FIELD_WIDGET_TYPE, type);
values.put(FIELD_ALBUM_PATH, Utils.ensureNotNull(albumPath));
getWritableDatabase().replaceOrThrow(TABLE_WIDGETS, null, values);
return true;
} catch (Throwable e) {
Log.e(TAG, "set widget fail", e);
return false;
}
}
private static Bitmap loadBitmap(Cursor cursor, int columnIndex) {
byte[] data = cursor.getBlob(columnIndex);
if (data == null) return null;
return BitmapFactory.decodeByteArray(data, 0, data.length);
}
public Entry getEntry(int appWidgetId) {
Cursor cursor = null;
try {
SQLiteDatabase db = getReadableDatabase();
cursor = db.query(TABLE_WIDGETS, PROJECTION,
WHERE_CLAUSE, new String[] {String.valueOf(appWidgetId)},
null, null, null);
if (cursor == null || !cursor.moveToNext()) {
Log.e(TAG, "query fail: empty cursor: " + cursor);
return null;
}
return new Entry(appWidgetId, cursor);
} catch (Throwable e) {
Log.e(TAG, "Could not load photo from database", e);
return null;
} finally {
Utils.closeSilently(cursor);
}
}
/**
* Remove any bitmap associated with the given appWidgetId.
*/
public void deleteEntry(int appWidgetId) {
try {
SQLiteDatabase db = getWritableDatabase();
db.delete(TABLE_WIDGETS, WHERE_CLAUSE,
new String[] {String.valueOf(appWidgetId)});
} catch (SQLiteException e) {
Log.e(TAG, "Could not delete photo from database", e);
}
}
}
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