diff -r 1612dbcec451 -r 639991d0808a java/cewolf-1.0/src/main/java/de/laures/cewolf/ChartImage.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/cewolf-1.0/src/main/java/de/laures/cewolf/ChartImage.java	Sat Feb 28 21:31:02 2009 +0100
@@ -0,0 +1,81 @@
+/* ================================================================
+ * Cewolf : Chart enabling Web Objects Framework
+ * ================================================================
+ *
+ * Project Info:  http://cewolf.sourceforge.net
+ * Project Lead:  Guido Laures (guido@laures.de);
+ *
+ * (C) Copyright 2002, by Guido Laures
+ *
+ * This library is free software; you can redistribute it and/or modify it under the terms
+ * of the GNU Lesser General Public License as published by the Free Software Foundation;
+ * either version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with this
+ * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+package de.laures.cewolf;
+
+import java.io.IOException;
+import java.util.Date;
+
+
+/**
+ * A special ChartHolder which also holds the image presentation of the chart.
+ * @author  Guido Laures
+ */
+public interface ChartImage {
+	
+	public static final int IMG_TYPE_CHART = 0;
+	public static final int IMG_TYPE_LEGEND = 1;
+    
+	/**
+	 * Returns the width of the chart image in pixel.
+	 * @return the width of the chart image in pixel
+	 */
+    public int getWidth();
+
+	/**
+	 * Returns the height of the chart image in pixel.
+	 * @return the height of the chart image in pixel
+	 */
+    public int getHeight();
+    
+	/**
+	 * Returns the type of the chart image.
+	 * @return the type of the chart image
+	 * @see #IMG_TYPE_CHART
+	 * @see #IMG_TYPE_LEGEND
+	 */
+    public int getType();
+    
+    /**
+     * Writes out a cached image to an outputstream. This method only marks the object
+     * as accessed and therfore frees it for cache cleanup.
+     * @param key the cache key
+     * @param out the stream to write to
+     * @throws IOException if an I/O error occured during write
+     */
+    public byte[] getBytes() throws CewolfException;
+        
+    /**
+     * Returns the MIME type of this image.
+     * @return the MIME type of the image
+     */
+    public String getMimeType();
+        
+	/**
+	 * Returns the size of the image in bytes.
+	 * @return size of the image
+	 * @throws CewolfException if the size could not be determined
+	 */
+    public int getSize() throws CewolfException;
+    
+    public Date getTimeoutTime();
+}