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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 org.apache.fop.datatypes.Length;
- import org.apache.fop.datatypes.LengthBase;
- import org.apache.fop.datatypes.Numeric;
- import org.apache.fop.fo.Constants;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.flow.ListItem;
- import org.apache.fop.fo.properties.PercentLength;
- import org.apache.fop.fo.properties.Property;
-
- /**
- * Class modelling the label-end Property Value function. See Sec. 5.10.4 of the
- * XSL-FO spec.
- */
- public class LabelEndFunction extends FunctionBase {
-
- /** {@inheritDoc} */
- public int getRequiredArgsCount() {
- return 0;
- }
-
- /** {@inheritDoc} */
- public Property eval(Property[] args, PropertyInfo pInfo) throws PropertyException {
-
- Length distance = pInfo.getPropertyList().get(
- Constants.PR_PROVISIONAL_DISTANCE_BETWEEN_STARTS).getLength();
- Length separation = pInfo.getPropertyList().getNearestSpecified(
- Constants.PR_PROVISIONAL_LABEL_SEPARATION).getLength();
-
- PropertyList pList = pInfo.getPropertyList();
- while (pList != null && !(pList.getFObj() instanceof ListItem)) {
- pList = pList.getParentPropertyList();
- }
- if (pList == null) {
- throw new PropertyException("label-end() called from outside an fo:list-item");
- }
- Length startIndent = pList.get(Constants.PR_START_INDENT).getLength();
-
- LengthBase base = new LengthBase(pInfo.getPropertyList(),
- LengthBase.CONTAINING_REFAREA_WIDTH);
- PercentLength refWidth = new PercentLength(1.0, base);
-
- Numeric labelEnd = distance;
- labelEnd = NumericOp.addition(labelEnd, startIndent);
- //TODO add start-intrusion-adjustment
- labelEnd = NumericOp.subtraction(labelEnd, separation);
-
- labelEnd = NumericOp.subtraction(refWidth, labelEnd);
-
- return (Property) labelEnd;
- }
-
- }
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