mirror of https://github.com/tasks/tasks
Removed old file and fixed a compilation error
Sam Bosley
11 years ago
parent
fee4b83a79
commit
0245d5d6b2
@ -1,213 +0,0 @@
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/**
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* Copyright (c) 2012 Todoroo Inc
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*
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* See the file "LICENSE" for the full license governing this code.
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*/
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package com.todoroo.astrid.helper;
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/*
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* Copyright (C) 2011 MIT Mobile Experience Lab
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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import java.io.File;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.Date;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Bitmap.CompressFormat;
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import android.graphics.BitmapFactory;
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import android.net.Uri;
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import android.text.TextUtils;
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import android.util.Log;
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import com.todoroo.andlib.service.ContextManager;
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import com.todoroo.andlib.utility.DateUtilities;
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import com.todoroo.astrid.data.TagData;
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import com.todoroo.astrid.data.UserActivity;
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/**
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* <p>
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* An image download-and-cacher that also knows how to efficiently generate
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* thumbnails of various sizes.
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* </p>
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*
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* <p>
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* The cache is shared with the entire process, so make sure you
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* {@link #registerOnImageLoadListener(OnImageLoadListener)} and
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* {@link #unregisterOnImageLoadListener(OnImageLoadListener)} any load
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* listeners in your activities.
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* </p>
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*
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* @author <a href="mailto:spomeroy@mit.edu">Steve Pomeroy</a>
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*
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*/
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@SuppressWarnings("nls")
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public class ImageDiskCache extends DiskCache<String, Bitmap> {
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private static final String TAG = ImageDiskCache.class.getSimpleName();
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public static final String CACHED_IDENTIFIER = "cached::";
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static final boolean DEBUG = false;
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private long mIDCounter = 0;
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private static ImageDiskCache mInstance;
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private final CompressFormat mCompressFormat;
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private final int mQuality;
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public static ImageDiskCache getInstance() {
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if (mInstance == null) {
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mInstance = new ImageDiskCache(ContextManager.getContext().getCacheDir(), CompressFormat.JPEG, 85);
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}
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return mInstance;
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}
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public static ImageDiskCache getInstance(Context context) {
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if (mInstance == null) {
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mInstance = new ImageDiskCache(context.getCacheDir(), CompressFormat.JPEG, 85);
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}
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return mInstance;
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}
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private ImageDiskCache(File file, CompressFormat format, int quality) {
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super(file, null, getExtension(format));
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mCompressFormat = format;
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mQuality = quality;
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}
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private static String getExtension(CompressFormat format) {
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String extension;
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switch (format) {
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case JPEG:
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extension = ".jpg";
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break;
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case PNG:
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extension = ".png";
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break;
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default:
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throw new IllegalArgumentException();
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}
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return extension;
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}
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/**
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* If loading a number of images where you don't have a unique ID to
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* represent the individual load, this can be used to generate a sequential
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* ID.
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*
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* @return a new unique ID
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*/
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public synchronized long getNewID() {
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return mIDCounter++;
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}
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@Override
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protected Bitmap fromDisk(String key, InputStream in) {
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if (DEBUG) {
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Log.d(TAG, "disk cache hit");
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}
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try {
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final Bitmap image = BitmapFactory.decodeStream(in);
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return image;
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} catch (final OutOfMemoryError oom) {
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return null;
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}
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}
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@Override
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protected void toDisk(String key, Bitmap image, OutputStream out) {
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if (DEBUG) {
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Log.d(TAG, "cache write for key " + key);
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}
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if (image != null) {
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if (!image.compress(mCompressFormat, mQuality, out)) {
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Log.e(TAG, "error writing compressed image to disk for key "
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+ key);
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}
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} else {
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Log.e(TAG, "attempting to write null image to cache");
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}
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}
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/**
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* @param uri
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* the image uri
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* @return a key unique to the given uri
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*/
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public String getKey(Uri uri) {
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return uri.toString();
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}
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/**
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* Returns an opaque cache key representing the given uri, width and height.
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*
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* @param uri
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* an image uri
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* @param width
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* the desired image max width
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* @param height
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* the desired image max height
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* @return a cache key unique to the given parameters
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*/
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public String getKey(Uri uri, int width, int height) {
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return uri.buildUpon()
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.appendQueryParameter("width", String.valueOf(width))
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.appendQueryParameter("height", String.valueOf(height)).build()
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.toString();
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}
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/**
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* Cancels all the asynchronous image loads.
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* Note: currently does not function properly.
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*
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*/
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public void cancelLoads() {
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// TODO actually make it possible to cancel tasks
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}
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@Override
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public boolean contains(String key) {
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return !TextUtils.isEmpty(key) && key.startsWith(CACHED_IDENTIFIER) && super.contains(key);
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}
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public static String getPictureHash(UserActivity update) {
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return String.format("%s%s%s", CACHED_IDENTIFIER, update.getValue(UserActivity.TARGET_ID), update.getValue(UserActivity.CREATED_AT));
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}
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public static String getPictureHash(TagData tagData) {
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long tag_date = 0;
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if (tagData.containsValue(TagData.CREATION_DATE)) {
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tag_date = tagData.getValue(TagData.CREATION_DATE);
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}
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if (tag_date == 0) {
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tag_date = DateUtilities.dateToUnixtime(new Date());
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}
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return String.format("%s%s%s", CACHED_IDENTIFIER,tagData.getValue(TagData.NAME), tag_date);
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}
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}
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