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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.pagination;
-
- // Java
- import java.awt.Rectangle;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.datatypes.PercentBaseContext;
- import org.apache.fop.fo.FONode;
- import org.apache.fop.fo.PropertyList;
-
- /**
- * Abstract base class for <a href="http://www.w3.org/TR/xsl/#fo_region-start">
- * <code>fo:region-start</code></a> and <a href="http://www.w3.org/TR/xsl/#fo_region-end">
- * <code>fo:region-end</code></a>.
- */
- public abstract class RegionSE extends SideRegion {
- // The value of properties relevant for fo:region-[start|end].
- // End of property values
-
- /**
- * Create a RegionSE instance that is a child of the
- * given parent {@link FONode}.
- * @param parent the {@link FONode} that is to be the parent
- */
- protected RegionSE(FONode parent) {
- super(parent);
- }
-
- /** {@inheritDoc} */
- public void bind(PropertyList pList) throws FOPException {
- super.bind(pList);
- }
-
- /**
- * Adjust the viewport reference rectangle for a region as a function
- * of precedence.
- * If before and after have precedence = true, the start and end
- * regions only go to the limits of their extents, otherwise
- * they extend in the BPD to the page reference rectangle
- * diminish by extend of start and end if present.
- * @param vpRefRect viewport reference rectangle
- * @param wm writing mode
- * @param siblingContext the context to use to resolve extent on siblings
- */
- protected void adjustIPD(Rectangle vpRefRect, int wm, PercentBaseContext siblingContext) {
- int offset = 0;
- RegionBefore before = (RegionBefore) getSiblingRegion(FO_REGION_BEFORE);
- if (before != null && before.getPrecedence() == EN_TRUE) {
- offset = before.getExtent().getValue(siblingContext);
- vpRefRect.translate(0, offset);
- }
- RegionAfter after = (RegionAfter) getSiblingRegion(FO_REGION_AFTER);
- if (after != null && after.getPrecedence() == EN_TRUE) {
- offset += after.getExtent().getValue(siblingContext);
- }
- if (offset > 0) {
- if (wm == EN_LR_TB || wm == EN_RL_TB) {
- vpRefRect.height -= offset;
- } else {
- vpRefRect.width -= offset;
- }
- }
- }
- }
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