1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.g2d.image.impl;
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14 import java.util.EnumSet;
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15 import java.util.concurrent.Executor;
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16 import java.util.concurrent.LinkedBlockingQueue;
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17 import java.util.concurrent.ThreadFactory;
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18 import java.util.concurrent.ThreadPoolExecutor;
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19 import java.util.concurrent.TimeUnit;
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21 import org.simantics.g2d.image.DefaultImages;
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22 import org.simantics.g2d.image.Image;
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23 import org.simantics.utils.datastructures.cache.IProvider;
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26 * AsyncImage acquires Image from IProvider asynchronously.
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27 * Wait symbol is shown while symbol is acquired.
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29 * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
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31 public class AsyncImage extends ImageProxy {
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33 static EnumSet<Feature> caps = EnumSet.of(Feature.Volatile, Feature.Vector);
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35 private static ThreadFactory tf = new ThreadFactory() {
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37 public Thread newThread(Runnable r) {
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38 Thread t = new Thread(new ThreadGroup("Renderer"), r);
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43 private static Executor EXECUTOR =
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44 new ThreadPoolExecutor(
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47 3L, TimeUnit.SECONDS,
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48 new LinkedBlockingQueue<Runnable>(),
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51 public AsyncImage(final IProvider<Image> imgProvider) {
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52 super(DefaultImages.UNKNOWN.get());
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53 EXECUTOR.execute(new Runnable() {
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56 setSource(DefaultImages.GRAB.get());
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57 setSource(imgProvider.get());
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62 public EnumSet<Feature> getFeatures() {
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63 return EnumSet.of(Feature.Volatile);
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