com.pickr.tasks.PhotoLoader.java Source code

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Here is the source code for com.pickr.tasks.PhotoLoader.java

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/*
 * Copyright (C) 2013 Fabien Barbero Permission is hereby granted, free of
 * charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to
 * the following conditions: The above copyright notice and this permission
 * notice shall be included in all copies or substantial portions of the
 * Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
package com.pickr.tasks;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;

import org.apache.commons.io.IOUtils;
import org.ez.flickr.api.Flickr;
import org.ez.flickr.api.entities.Photo;
import org.ez.flickr.api.entities.PhotoSize;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.os.Handler;
import android.os.Message;
import android.view.Display;
import android.view.WindowManager;
import android.widget.ImageView;
import com.pickr.BuildConfig;
import com.pickr.FlickrHandler;
import com.pickr.cache.FlickrCache;
import com.pickr.utils.BitmapUtils;
import com.pickr.utils.Logger;
import com.pickr.utils.PhotoSizeWeight;

public class PhotoLoader extends BasicTask<Bitmap> {

    private static final Logger LOGGER = Logger.getLogger(PhotoLoader.class);
    //
    public static final int PHOTO_URL = 35;

    //
    private final ImageView mImageView;
    private final Photo mPhoto;
    private final Context mContext;
    private final Handler mHandler;

    public PhotoLoader(ImageView imageView, Photo photo, Handler handler, Context context) {
        mImageView = imageView;
        mPhoto = photo;
        mHandler = handler;
        mContext = context;
    }

    @Override
    protected Bitmap doInBackground() {
        try {
            WindowManager wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
            Display display = wm.getDefaultDisplay();

            int resolution = display.getWidth() * display.getHeight();

            Flickr flickr = FlickrHandler.getFlickr();
            List<PhotoSize> sizes = flickr.getPhotosService().getSizes(mPhoto);

            return loadBitmap(PhotoSizeWeight.getOptimalPhotoSize(sizes, resolution), display);

        } catch (Throwable ex) {
            ex.printStackTrace();
            LOGGER.e("Error loading photo", ex);
        }
        return null;
    }

    private Bitmap loadBitmap(PhotoSize size, Display display) throws IOException {
        InputStream is = null;
        try {
            if (BuildConfig.DEBUG) {
                LOGGER.d("Loading photo with size " + size.getWidth() + "x" + size.getHeight() + " for screen "
                        + display.getWidth() + "x" + display.getHeight());
            }
            URL url = size.getSource();
            Bitmap bitmap = FlickrCache.getBitmapCache().get(url);

            if (bitmap == null) {
                is = url.openStream();

                Options options = new Options();
                options.inPurgeable = true;
                options.inInputShareable = true;
                options.inSampleSize = BitmapUtils.calculateInSampleSize(size.getWidth(), size.getHeight(),
                        display.getWidth(), display.getHeight());
                bitmap = BitmapFactory.decodeStream(is, null, options);
                FlickrCache.getBitmapCache().put(url, bitmap);

            }
            Message msg = mHandler.obtainMessage(PHOTO_URL, url);
            mHandler.sendMessage(msg);
            return bitmap;

        } finally {
            IOUtils.closeQuietly(is);
        }
    }

    @Override
    protected void onPostExecute(Bitmap result) {
        mImageView.setImageBitmap(result);
    }

}