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- /*
- * $Id: MixedLength.java,v 1.6 2003/03/05 20:38:23 jeremias Exp $
- * ============================================================================
- * The Apache Software License, Version 1.1
- * ============================================================================
- *
- * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. The end-user documentation included with the redistribution, if any, must
- * include the following acknowledgment: "This product includes software
- * developed by the Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself, if
- * and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "FOP" and "Apache Software Foundation" must not be used to
- * endorse or promote products derived from this software without prior
- * written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache", nor may
- * "Apache" appear in their name, without prior written permission of the
- * Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ============================================================================
- *
- * This software consists of voluntary contributions made by many individuals
- * on behalf of the Apache Software Foundation and was originally created by
- * James Tauber <jtauber@jtauber.com>. For more information on the Apache
- * Software Foundation, please see <http://www.apache.org/>.
- */
- package org.apache.fop.datatypes;
-
- import java.util.Vector;
- import java.util.Enumeration;
-
- import org.apache.fop.fo.expr.Numeric;
- import org.apache.fop.fo.expr.PropertyException;
-
- /**
- * A length quantity in XSL which is specified with a mixture
- * of absolute and relative and/or percent components.
- * The actual value may not be computable before layout is done.
- */
- public class MixedLength extends Length {
-
- private Vector lengths ;
-
- public MixedLength(Vector lengths) {
- this.lengths = lengths;
- }
-
- protected void computeValue() {
- int computedValue = 0;
- boolean bAllComputed = true;
- Enumeration e = lengths.elements();
- while (e.hasMoreElements()) {
- Length l = (Length) e.nextElement();
- computedValue += l.getValue();
- if (!l.isComputed()) {
- bAllComputed = false;
- }
- }
- setComputedValue(computedValue, bAllComputed);
- }
-
-
- public double getTableUnits() {
- double tableUnits = 0.0;
- Enumeration e = lengths.elements();
- while (e.hasMoreElements()) {
- tableUnits += ((Length) e.nextElement()).getTableUnits();
- }
- return tableUnits;
- }
-
- public void resolveTableUnit(double dTableUnit) {
- Enumeration e = lengths.elements();
- while (e.hasMoreElements()) {
- ((Length) e.nextElement()).resolveTableUnit(dTableUnit);
- }
- }
-
- public String toString() {
- StringBuffer sbuf = new StringBuffer();
- Enumeration e = lengths.elements();
- while (e.hasMoreElements()) {
- if (sbuf.length() > 0) {
- sbuf.append('+');
- }
- sbuf.append(e.nextElement().toString());
- }
- return sbuf.toString();
- }
-
- public Numeric asNumeric() {
- Numeric numeric = null;
- for (Enumeration e = lengths.elements(); e.hasMoreElements();) {
- Length l = (Length) e.nextElement();
- if (numeric == null) {
- numeric = l.asNumeric();
- } else {
- try {
- Numeric sum = numeric.add(l.asNumeric());
- numeric = sum;
- } catch (PropertyException pe) {
- System.err.println(
- "Can't convert MixedLength to Numeric: " + pe);
- }
- }
- }
- return numeric;
- }
- }
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