com.nostra13.universalimageloader.core.DisplayBitmapTask Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2011-2013 Sergey Tarasevich
*
* 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.nostra13.universalimageloader.core;
import android.graphics.Bitmap;
import com.nostra13.universalimageloader.core.assist.ImageLoadingListener;
import com.nostra13.universalimageloader.core.assist.LoadedFrom;
import com.nostra13.universalimageloader.core.display.BitmapDisplayer;
import com.nostra13.universalimageloader.core.imageaware.ImageAware;
import com.nostra13.universalimageloader.utils.L;
/**
* Displays bitmap in {@link com.nostra13.universalimageloader.core.imageaware.ImageAware}. Must be called on UI thread.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @see ImageLoadingListener
* @see BitmapDisplayer
* @since 1.3.1
*/
final class DisplayBitmapTask implements Runnable {
private static final String LOG_DISPLAY_IMAGE_IN_IMAGEAWARE = "Display image in ImageAware (loaded from %1$s) [%2$s]";
private static final String LOG_TASK_CANCELLED_IMAGEAWARE_REUSED = "ImageAware is reused for another image. Task is cancelled. [%s]";
private static final String LOG_TASK_CANCELLED_IMAGEAWARE_COLLECTED = "ImageAware was collected by GC. Task is cancelled. [%s]";
private final Bitmap bitmap;
private final String imageUri;
private final ImageAware imageAware;
private final String memoryCacheKey;
private final BitmapDisplayer displayer;
private final ImageLoadingListener listener;
private final ImageLoaderEngine engine;
private final LoadedFrom loadedFrom;
private boolean loggingEnabled;
public DisplayBitmapTask(Bitmap bitmap, ImageLoadingInfo imageLoadingInfo, ImageLoaderEngine engine,
LoadedFrom loadedFrom) {
this.bitmap = bitmap;
imageUri = imageLoadingInfo.uri;
imageAware = imageLoadingInfo.imageAware;
memoryCacheKey = imageLoadingInfo.memoryCacheKey;
displayer = imageLoadingInfo.options.getDisplayer();
listener = imageLoadingInfo.listener;
this.engine = engine;
this.loadedFrom = loadedFrom;
}
public void run() {
if (imageAware.isCollected()) {
if (loggingEnabled) L.d(LOG_TASK_CANCELLED_IMAGEAWARE_COLLECTED, memoryCacheKey);
listener.onLoadingCancelled(imageUri, imageAware.getWrappedView());
} else if (isViewWasReused()) {
if (loggingEnabled) L.d(LOG_TASK_CANCELLED_IMAGEAWARE_REUSED, memoryCacheKey);
listener.onLoadingCancelled(imageUri, imageAware.getWrappedView());
} else {
if (loggingEnabled) L.d(LOG_DISPLAY_IMAGE_IN_IMAGEAWARE, loadedFrom, memoryCacheKey);
Bitmap displayedBitmap = displayer.display(bitmap, imageAware, loadedFrom);
listener.onLoadingComplete(imageUri, imageAware.getWrappedView(), displayedBitmap);
engine.cancelDisplayTaskFor(imageAware);
}
}
/** Checks whether memory cache key (image URI) for current ImageAware is actual */
private boolean isViewWasReused() {
String currentCacheKey = engine.getLoadingUriForView(imageAware);
return !memoryCacheKey.equals(currentCacheKey);
}
void setLoggingEnabled(boolean loggingEnabled) {
this.loggingEnabled = loggingEnabled;
}
}