/*
* Copyright (C) 2009 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.lightbox.android.camera.gallery;
import com.lightbox.android.camera.gallery.BaseImage;
import com.lightbox.android.camera.gallery.BaseImageList;
import com.lightbox.android.camera.gallery.IImageList;
import com.lightbox.android.camera.gallery.Image;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore.Images.Media;
/**
* Represents an ordered collection of Image objects. Provides an API to add
* and remove an image.
*/
public class ImageList extends BaseImageList implements IImageList {
@SuppressWarnings("unused")
private static final String TAG = "ImageList";
private static final String[] ACCEPTABLE_IMAGE_TYPES =
new String[] { "image/jpeg", "image/png", "image/gif" };
/**
* ImageList constructor.
*/
public ImageList(ContentResolver resolver, Uri imageUri,
int sort, String bucketId) {
super(resolver, imageUri, sort, bucketId);
}
private static final String WHERE_CLAUSE =
"(" + Media.MIME_TYPE + " in (?, ?, ?))";
private static final String WHERE_CLAUSE_WITH_BUCKET_ID =
WHERE_CLAUSE + " AND " + Media.BUCKET_ID + " = ?";
protected String whereClause() {
return mBucketId == null ? WHERE_CLAUSE : WHERE_CLAUSE_WITH_BUCKET_ID;
}
protected String[] whereClauseArgs() {
// TODO: Since mBucketId won't change, we should keep the array.
if (mBucketId != null) {
int count = ACCEPTABLE_IMAGE_TYPES.length;
String[] result = new String[count + 1];
System.arraycopy(ACCEPTABLE_IMAGE_TYPES, 0, result, 0, count);
result[count] = mBucketId;
return result;
}
return ACCEPTABLE_IMAGE_TYPES;
}
@Override
protected Cursor createCursor() {
Cursor c = Media.query(
mContentResolver, mBaseUri, IMAGE_PROJECTION,
whereClause(), whereClauseArgs(), sortOrder());
return c;
}
static final String[] IMAGE_PROJECTION = new String[] {
Media._ID,
Media.DATE_TAKEN,
Media.MINI_THUMB_MAGIC,
Media.ORIENTATION,
Media.DATE_MODIFIED};
private static final int INDEX_ID = 0;
private static final int INDEX_DATE_TAKEN = 1;
private static final int INDEX_MINI_THUMB_MAGIC = 2;
private static final int INDEX_ORIENTATION = 3;
private static final int INDEX_DATE_MODIFIED = 4;
@Override
protected BaseImage loadImageFromCursor(Cursor cursor) {
long id = cursor.getLong(INDEX_ID);
long dateTaken = cursor.getLong(INDEX_DATE_TAKEN);
if (dateTaken == 0) {
dateTaken = cursor.getLong(INDEX_DATE_MODIFIED) * 1000;
}
long miniThumbMagic = cursor.getLong(INDEX_MINI_THUMB_MAGIC);
int orientation = cursor.getInt(INDEX_ORIENTATION);
return new Image(mContentResolver, id,
contentUri(id), miniThumbMagic, dateTaken,
orientation);
}
}