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diff --git a/reportbuilder/java/com/sun/star/report/pentaho/styles/LengthCalculator.java b/reportbuilder/java/com/sun/star/report/pentaho/styles/LengthCalculator.java
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: LengthCalculator.java,v $
+ * $Revision: 1.4 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+
+package com.sun.star.report.pentaho.styles;
+
+import org.jfree.layouting.input.style.values.CSSNumericType;
+import org.jfree.layouting.input.style.values.CSSNumericValue;
+
+/**
+ * A helper class that sums up various CSS-length. The various unit types are
+ * kept separate until the final result is computed to minimize the computation
+ * inaccuracy.
+ *
+ * @author Thomas Morgner
+ * @since 15.03.2007
+ */
+public class LengthCalculator
+{
+  // and centimeter (x10)
+  private double millimeter;
+
+  // and pica (x12) and inch(x72). Px is assumed to be in 96dpi.
+  private double point;
+
+  private double pixel;
+
+  public LengthCalculator()
+  {
+  }
+
+  public void add (final CSSNumericValue value)
+  {
+    if (value == null)
+    {
+      return;
+    }
+
+    final CSSNumericType numericType = value.getType();
+    if (numericType == CSSNumericType.CM)
+    {
+      millimeter += value.getValue() * 10;
+    }
+    else if (numericType == CSSNumericType.MM)
+    {
+      millimeter += value.getValue();
+    }
+    else if (numericType == CSSNumericType.PT)
+    {
+      point += value.getValue();
+    }
+    else if (numericType == CSSNumericType.PC)
+    {
+      point += 12 * value.getValue();
+    }
+    else if (numericType == CSSNumericType.INCH)
+    {
+      point += 72 * value.getValue();
+    }
+    else if (numericType == CSSNumericType.PX)
+    {
+      pixel += value.getValue();
+    }
+    // LOGGER.debug ("Adding " + value  + " [mm: " + millimeter + "] [pt: " + point + "] px: [" + pixel + "]");
+  }
+
+  public CSSNumericValue getResult ()
+  {
+    if (pixel == 0 && point == 0)
+    {
+      return CSSNumericValue.createValue(CSSNumericType.MM, millimeter);
+    }
+    if (pixel == 0 && millimeter == 0)
+    {
+      return CSSNumericValue.createValue(CSSNumericType.PT, point);
+    }
+    if (point == 0 && millimeter == 0)
+    {
+      return CSSNumericValue.createValue(CSSNumericType.PX, pixel);
+    }
+    // else convert it.
+
+    double result = point;
+    result += (millimeter * 10 * 72 / 254);
+    result += pixel * 72 / 96;
+
+    return CSSNumericValue.createValue(CSSNumericType.PT, result);
+  }
+}