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package de.danoeh.antennapod.asynctask;
import java.io.File;
import android.content.res.TypedArray;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.util.Log;
import android.widget.ImageView;
import de.danoeh.antennapod.AppConfig;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.util.BitmapDecoder;
public abstract class BitmapDecodeWorkerTask extends Thread {
protected int PREFERRED_LENGTH;
/** Can be thumbnail or cover */
protected int imageType;
private static final String TAG = "BitmapDecodeWorkerTask";
private ImageView target;
protected CachedBitmap cBitmap;
protected String fileUrl;
private Handler handler;
private final int defaultCoverResource;
public BitmapDecodeWorkerTask(Handler handler, ImageView target,
String fileUrl, int length, int imageType) {
super();
this.handler = handler;
this.target = target;
this.fileUrl = fileUrl;
this.PREFERRED_LENGTH = length;
this.imageType = imageType;
TypedArray res = target.getContext().obtainStyledAttributes(new int[] {R.attr.default_cover});
this.defaultCoverResource = res.getResourceId(0, 0);
res.recycle();
}
/**
* Should return true if tag of the imageview is still the same it was
* before the bitmap was decoded
*/
abstract protected boolean tagsMatching(ImageView target);
protected void onPostExecute() {
// check if imageview is still supposed to display this image
if (tagsMatching(target) && cBitmap.getBitmap() != null) {
target.setImageBitmap(cBitmap.getBitmap());
} else {
if (AppConfig.DEBUG)
Log.d(TAG, "Not displaying image");
}
}
@Override
public void run() {
File f = null;
if (fileUrl != null) {
f = new File(fileUrl);
}
if (fileUrl != null && f.exists()) {
cBitmap = new CachedBitmap(BitmapDecoder.decodeBitmap(PREFERRED_LENGTH, fileUrl), PREFERRED_LENGTH);
if (cBitmap.getBitmap() != null) {
storeBitmapInCache(cBitmap);
} else {
Log.w(TAG, "Could not load bitmap. Using default image.");
cBitmap = new CachedBitmap(BitmapFactory.decodeResource(target.getResources(),
defaultCoverResource), PREFERRED_LENGTH);
}
if (AppConfig.DEBUG)
Log.d(TAG, "Finished loading bitmaps");
} else {
if (fileUrl == null) {
Log.w(TAG, "File URL is null");
} else {
Log.w(TAG, "File does not exist anymore.");
}
onInvalidFileUrl();
}
endBackgroundTask();
}
protected final void endBackgroundTask() {
handler.post(new Runnable() {
@Override
public void run() {
onPostExecute();
}
});
}
protected void onInvalidFileUrl() {
Log.e(TAG, "FeedImage has no valid file url. Using default image");
cBitmap = new CachedBitmap(BitmapFactory.decodeResource(target.getResources(),
defaultCoverResource), PREFERRED_LENGTH);
}
protected void storeBitmapInCache(CachedBitmap cb) {
FeedImageLoader loader = FeedImageLoader.getInstance();
if (imageType == FeedImageLoader.IMAGE_TYPE_COVER) {
loader.addBitmapToCoverCache(fileUrl, cb);
} else if (imageType == FeedImageLoader.IMAGE_TYPE_THUMBNAIL) {
loader.addBitmapToThumbnailCache(fileUrl, cb);
}
}
}
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