| /* |
| * 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.data; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| |
| import com.android.gallery3d.R; |
| |
| import java.util.ArrayList; |
| |
| public class SizeClustering extends Clustering { |
| @SuppressWarnings("unused") |
| private static final String TAG = "SizeClustering"; |
| |
| private Context mContext; |
| private ArrayList<Path>[] mClusters; |
| private String[] mNames; |
| private long mMinSizes[]; |
| |
| private static final long MEGA_BYTES = 1024L*1024; |
| private static final long GIGA_BYTES = 1024L*1024*1024; |
| |
| private static final long[] SIZE_LEVELS = { |
| 0, |
| 1 * MEGA_BYTES, |
| 10 * MEGA_BYTES, |
| 100 * MEGA_BYTES, |
| 1 * GIGA_BYTES, |
| 2 * GIGA_BYTES, |
| 4 * GIGA_BYTES, |
| }; |
| |
| public SizeClustering(Context context) { |
| mContext = context; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void run(MediaSet baseSet) { |
| @SuppressWarnings("unchecked") |
| final ArrayList<Path>[] group = new ArrayList[SIZE_LEVELS.length]; |
| baseSet.enumerateTotalMediaItems(new MediaSet.ItemConsumer() { |
| @Override |
| public void consume(int index, MediaItem item) { |
| // Find the cluster this item belongs to. |
| long size = item.getSize(); |
| int i; |
| for (i = 0; i < SIZE_LEVELS.length - 1; i++) { |
| if (size < SIZE_LEVELS[i + 1]) { |
| break; |
| } |
| } |
| |
| ArrayList<Path> list = group[i]; |
| if (list == null) { |
| list = new ArrayList<Path>(); |
| group[i] = list; |
| } |
| list.add(item.getPath()); |
| } |
| }); |
| |
| int count = 0; |
| for (int i = 0; i < group.length; i++) { |
| if (group[i] != null) { |
| count++; |
| } |
| } |
| |
| mClusters = new ArrayList[count]; |
| mNames = new String[count]; |
| mMinSizes = new long[count]; |
| |
| Resources res = mContext.getResources(); |
| int k = 0; |
| // Go through group in the reverse order, so the group with the largest |
| // size will show first. |
| for (int i = group.length - 1; i >= 0; i--) { |
| if (group[i] == null) continue; |
| |
| mClusters[k] = group[i]; |
| if (i == 0) { |
| mNames[k] = String.format( |
| res.getString(R.string.size_below), getSizeString(i + 1)); |
| } else if (i == group.length - 1) { |
| mNames[k] = String.format( |
| res.getString(R.string.size_above), getSizeString(i)); |
| } else { |
| String minSize = getSizeString(i); |
| String maxSize = getSizeString(i + 1); |
| mNames[k] = String.format( |
| res.getString(R.string.size_between), minSize, maxSize); |
| } |
| mMinSizes[k] = SIZE_LEVELS[i]; |
| k++; |
| } |
| } |
| |
| private String getSizeString(int index) { |
| long bytes = SIZE_LEVELS[index]; |
| if (bytes >= GIGA_BYTES) { |
| return (bytes / GIGA_BYTES) + "GB"; |
| } else { |
| return (bytes / MEGA_BYTES) + "MB"; |
| } |
| } |
| |
| @Override |
| public int getNumberOfClusters() { |
| return mClusters.length; |
| } |
| |
| @Override |
| public ArrayList<Path> getCluster(int index) { |
| return mClusters[index]; |
| } |
| |
| @Override |
| public String getClusterName(int index) { |
| return mNames[index]; |
| } |
| |
| public long getMinSize(int index) { |
| return mMinSizes[index]; |
| } |
| } |