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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.fo.properties;
-
- import org.apache.fop.datatypes.PercentBase;
- import org.apache.fop.datatypes.PercentBaseContext;
- import org.apache.fop.fo.expr.PropertyException;
- import org.apache.fop.util.CompareUtil;
-
- /**
- * a percent specified length quantity in XSL
- */
- public class PercentLength extends LengthProperty {
-
- /**
- * The percentage itself, expressed as a decimal value, e.g. for 95%, set
- * the value to .95
- */
- private double factor;
-
- /**
- * A PercentBase implementation that contains the base length to which the
- * {@link #factor} should be applied to compute the actual length
- */
- private PercentBase lbase;
-
- /**
- * Main constructor. Construct an object based on a factor (the percent,
- * as a factor) and an object which has a method to return the Length which
- * provides the "base" for the actual length that is modeled.
- * @param factor the percentage factor, expressed as a decimal (e.g. use
- * .95 to represent 95%)
- * @param lbase base property to which the factor should be applied
- */
- public PercentLength(double factor, PercentBase lbase) {
- this.factor = factor;
- this.lbase = lbase;
- }
-
- /**
- * @return the base
- */
- public PercentBase getBaseLength() {
- return this.lbase;
- }
-
- /**
- * Used during property resolution to check for
- * negative percentages
- *
- * @return the percentage value
- */
- protected double getPercentage() {
- return factor * 100;
- }
-
- /**
- * Return false because percent-length are always relative.
- * {@inheritDoc}
- */
- public boolean isAbsolute() {
- return false;
- }
-
- /** {@inheritDoc} */
- public double getNumericValue() {
- return getNumericValue(null);
- }
-
- /** {@inheritDoc} */
- public double getNumericValue(PercentBaseContext context) {
- try {
- return factor * lbase.getBaseLength(context);
- } catch (PropertyException exc) {
- log.error(exc);
- return 0;
- }
- }
-
- /** {@inheritDoc} */
- public String getString() {
- return (factor * 100.0) + "%";
- }
-
- /**
- * Return the length of this PercentLength.
- * {@inheritDoc}
- */
- public int getValue() {
- return (int) getNumericValue();
- }
-
- /** {@inheritDoc} */
- public int getValue(PercentBaseContext context) {
- return (int) getNumericValue(context);
- }
-
- /**
- * @return the String equivalent of this
- */
- public String toString() {
- StringBuffer sb = new StringBuffer(PercentLength.class.getName())
- .append("[factor=").append(factor)
- .append(",lbase=").append(lbase).append("]");
- return sb.toString();
- }
-
- @Override
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + CompareUtil.getHashCode(factor);
- result = prime * result + CompareUtil.getHashCode(lbase);
- return result;
- }
-
- @Override
- public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (!(obj instanceof PercentLength)) {
- return false;
- }
- PercentLength other = (PercentLength) obj;
- return CompareUtil.equal(factor, other.factor)
- && CompareUtil.equal(lbase, other.lbase);
- }
- }
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