diff options
Diffstat (limited to 'src/com/android/gallery3d/data/SizeClustering.java')
-rw-r--r-- | src/com/android/gallery3d/data/SizeClustering.java | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/SizeClustering.java b/src/com/android/gallery3d/data/SizeClustering.java new file mode 100644 index 000000000..b809c841b --- /dev/null +++ b/src/com/android/gallery3d/data/SizeClustering.java @@ -0,0 +1,141 @@ +/* + * 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]; + } +} |