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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.expr;
import java.awt.Color;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.datatypes.Length;
import org.apache.fop.datatypes.PercentBaseContext;
import org.apache.fop.datatypes.Numeric;
import org.apache.fop.fo.properties.Property;
/**
* A numeric property which hold the final absolute result of an expression
* calculations.
*/
public class NumericProperty extends Property implements Numeric, Length {
private double value;
private int dim;
/**
* Construct a Numeric object by specifying one or more components,
* including absolute length, percent length, table units.
* @param value The value of the numeric.
* @param dim The dimension of the value. 0 for a Number, 1 for a Length
* (any type), >1, <0 if Lengths have been multiplied or divided.
*/
protected NumericProperty(double value, int dim) {
this.value = value;
this.dim = dim;
}
/**
* Return the dimension.
* @see Numeric#getDimension()
*/
public int getDimension() {
return dim;
}
/**
* Return the value.
* @see Numeric#getNumericValue()
*/
public double getNumericValue() {
return value;
}
/**
* @see Numeric#getNumericValue(PercentBaseContext)
*/
public double getNumericValue(PercentBaseContext context) {
return value;
}
/**
* Return true of the numeric is absolute.
* @see Numeric#isAbsolute()
*/
public boolean isAbsolute() {
return true;
}
/** @see org.apache.fop.fo.properties.Property#getNumeric() */
public Numeric getNumeric() {
return this;
}
/** @see org.apache.fop.fo.properties.Property#getNumber() */
public Number getNumber() {
return new Double(value);
}
/** @see org.apache.fop.datatypes.Numeric#getValue() */
public int getValue() {
return (int) value;
}
/** @see org.apache.fop.datatypes.Numeric#getValue(PercentBaseContext) */
public int getValue(PercentBaseContext context) {
return (int) value;
}
/** @see org.apache.fop.fo.properties.Property#getLength() */
public Length getLength() {
if (dim == 1) {
return this;
}
log.error("Can't create length with dimension " + dim);
return null;
}
/** @see org.apache.fop.fo.properties.Property#getColor(FOUserAgent) */
public Color getColor(FOUserAgent foUserAgent) {
// TODO: try converting to numeric number and then to color
return null;
}
/** @see org.apache.fop.fo.properties.Property#getObject() */
public Object getObject() {
return this;
}
/** @see java.lang.Object#toString() */
public String toString() {
if (dim == 1) {
return (int) value + "mpt";
} else {
return value + "^" + dim;
}
}
}
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