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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.PercentBaseContext;
import org.apache.fop.datatypes.PercentBase;
import org.apache.fop.fo.FObj;
/**
* A table-column width specification, possibly including some
* number of proportional "column-units". The absolute size of a
* column-unit depends on the fixed and proportional sizes of all
* columns in the table, and on the overall size of the table.
* It can't be calculated until all columns have been specified and until
* the actual width of the table is known. Since this can be specified
* as a percent of its parent containing width, the calculation is done
* during layout.
* NOTE: this is only supposed to be allowed if table-layout=fixed.
*/
public class TableColLength extends LengthProperty {
/**
* Number of table-column proportional units
*/
private double tcolUnits;
/**
* The column the this column-units are defined on.
*/
private FObj column;
/**
* Construct an object with tcolUnits of proportional measure.
* @param tcolUnits number of table-column proportional units
*/
public TableColLength(double tcolUnits, FObj column) {
this.tcolUnits = tcolUnits;
this.column = column;
}
/**
* Override the method in Length
* @return the number of specified proportional table-column units.
*/
public double getTableUnits() {
return tcolUnits;
}
/**
* Return false because table-col-units are a relative numeric.
* @see org.apache.fop.datatypes.Numeric#isAbsolute()
*/
public boolean isAbsolute() {
return false;
}
/**
* Return the value as a numeric value.
* @see org.apache.fop.datatypes.Numeric#getNumericValue()
*/
public double getNumericValue() {
return tcolUnits * column.getLayoutDimension(PercentBase.TABLE_UNITS).floatValue();
}
/**
* Return the value of this Numeric.
* @param context Evaluation context
* @return the value
* @see Numeric#getNumericValue(Object)
*/
public double getNumericValue(PercentBaseContext context) {
return getNumericValue();
}
/**
* Return the value as a length.
* @see org.apache.fop.datatypes.Length#getValue()
*/
public int getValue() {
return (int) (tcolUnits * column.getLayoutDimension(PercentBase.TABLE_UNITS).floatValue());
}
/**
* Returns the length in 1/1000ths of a point (millipoints)
* @param Evaluation context
* @return the length in millipoints
*/
public int getValue(PercentBaseContext context) {
return getValue();
}
/**
* Convert this to a String
* @return the string representation of this
*/
public String toString() {
return (Double.toString(tcolUnits) + " table-column-units");
}
}
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