Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / image / impl / AsyncImage.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/AsyncImage.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/AsyncImage.java
new file mode 100644 (file)
index 0000000..01f7aba
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/AsyncImage.java
@@ -0,0 +1,67 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.image.impl;\r
+\r
+import java.util.EnumSet;\r
+import java.util.concurrent.Executor;\r
+import java.util.concurrent.LinkedBlockingQueue;\r
+import java.util.concurrent.ThreadFactory;\r
+import java.util.concurrent.ThreadPoolExecutor;\r
+import java.util.concurrent.TimeUnit;\r
+\r
+import org.simantics.g2d.image.DefaultImages;\r
+import org.simantics.g2d.image.Image;\r
+import org.simantics.utils.datastructures.cache.IProvider;\r
+\r
+/**\r
+ * AsyncImage acquires Image from IProvider asynchronously.\r
+ * Wait symbol is shown while symbol is acquired.\r
+ *\r
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>\r
+ */\r
+public class AsyncImage extends ImageProxy {\r
+\r
+    static EnumSet<Feature> caps = EnumSet.of(Feature.Volatile, Feature.Vector);\r
+\r
+    private static ThreadFactory tf = new ThreadFactory() {\r
+        @Override\r
+        public Thread newThread(Runnable r) {\r
+            Thread t = new Thread(new ThreadGroup("Renderer"), r);\r
+            t.setDaemon(false);\r
+            return t;\r
+        }\r
+    };\r
+    private static Executor EXECUTOR =\r
+        new ThreadPoolExecutor(\r
+                0,\r
+                1,\r
+                3L, TimeUnit.SECONDS,\r
+                new LinkedBlockingQueue<Runnable>(),\r
+                tf);\r
+\r
+    public AsyncImage(final IProvider<Image> imgProvider) {\r
+        super(DefaultImages.UNKNOWN.get());\r
+        EXECUTOR.execute(new Runnable() {\r
+            @Override\r
+            public void run() {\r
+                setSource(DefaultImages.GRAB.get());\r
+                setSource(imgProvider.get());\r
+            }});\r
+    }\r
+\r
+    @Override\r
+    public EnumSet<Feature> getFeatures() {\r
+        return EnumSet.of(Feature.Volatile);\r
+    }\r
+\r
+}\r
+\r