| /* |
| * 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.xmlgraphics.util.UnitConv; |
| |
| import org.apache.fop.datatypes.Length; |
| import org.apache.fop.datatypes.Numeric; |
| import org.apache.fop.fo.FObj; |
| import org.apache.fop.fo.PropertyList; |
| import org.apache.fop.fo.expr.PropertyException; |
| |
| /** |
| * Superclass for properties wrapping a Length value. |
| */ |
| public abstract class LengthProperty extends Property |
| implements Length, Numeric { |
| |
| /** |
| * Inner class for making instances of LengthProperty |
| */ |
| public static class Maker extends PropertyMaker { |
| |
| /** |
| * Constructor |
| * |
| * @param propId the id of the property for which a Maker should be created |
| */ |
| public Maker(int propId) { |
| super(propId); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public Property convertProperty(Property p, |
| PropertyList propertyList, |
| FObj fo) throws PropertyException { |
| if (p instanceof EnumProperty) { |
| return new EnumLength(p); |
| } |
| if (p instanceof LengthProperty) { |
| return p; |
| } |
| if (p instanceof NumberProperty) { |
| //Assume pixels (like in HTML) when there's no unit |
| float resolution = propertyList.getFObj().getUserAgent().getSourceResolution(); |
| return FixedLength.getInstance( |
| p.getNumeric().getNumericValue(), "px", |
| UnitConv.IN2PT / resolution); |
| } |
| Length val = p.getLength(); |
| if (val != null) { |
| return (Property) val; |
| } |
| /* always null ?? */ |
| return convertPropertyDatatype(p, propertyList, fo); |
| } |
| |
| } |
| |
| /** @return the numeric dimension. Length always a dimension of 1 */ |
| public int getDimension() { |
| return 1; |
| } |
| |
| /** @return this.length cast as a Numeric */ |
| @Override |
| public Numeric getNumeric() { |
| return this; |
| } |
| |
| /** @return this.length */ |
| @Override |
| public Length getLength() { |
| return this; |
| } |
| |
| /** @return this.length cast as an Object */ |
| @Override |
| public Object getObject() { |
| return this; |
| } |
| |
| } |
| |