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diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/CacheProvider.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/CacheProvider.java
new file mode 100644
index 000000000..ec3a53652
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/CacheProvider.java
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.g2d.image.impl;
+
+import java.lang.ref.WeakReference;
+
+import org.simantics.g2d.image.Image;
+import org.simantics.utils.datastructures.cache.IProvider;
+import org.simantics.utils.datastructures.cache.ProvisionException;
+
+public class CacheProvider extends AbstractProviderProxy {
+
+	WeakReference<Image> ref;
+
+	public CacheProvider(IProvider<Image> source) {
+		super(source);
+	}
+
+	@Override
+	public synchronized Image get() throws ProvisionException {
+		if (ref!=null) {
+			Image x = ref.get();
+			if (x==null) ref=null; else return x;
+		}
+		Image x = source.get();
+		ref = new WeakReference<Image>(x);
+		return x; 
+	}
+
+	
+	
+}
+