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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.FODimension;
- import org.apache.fop.datatypes.Length;
- import org.apache.fop.datatypes.LengthBase;
- import org.apache.fop.datatypes.Numeric;
- import org.apache.fop.datatypes.PercentBaseContext;
- import org.apache.fop.fo.Constants;
- import org.apache.fop.fo.FONode;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.properties.CommonMarginBlock;
-
- /**
- * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_region-body">
- * <code>fo:region-body</code></a> object.
- */
- public class RegionBody extends Region {
- // The value of properties relevant for fo:region-body.
- private CommonMarginBlock commonMarginBlock;
- private Numeric columnCount;
- private Length columnGap;
- // End of property values
-
- /**
- * Create a RegionBody instance that is a child of the
- * given parent {@link FONode}.
- * @param parent the {@link FONode} that is to be the parent
- */
- public RegionBody(FONode parent) {
- super(parent);
- }
-
- /** {@inheritDoc} */
- public void bind(PropertyList pList) throws FOPException {
- super.bind(pList);
- commonMarginBlock = pList.getMarginBlockProps();
- columnCount = pList.get(PR_COLUMN_COUNT).getNumeric();
- columnGap = pList.get(PR_COLUMN_GAP).getLength();
-
- if ((getColumnCount() > 1) && (getOverflow() == EN_SCROLL)) {
- /* This is an error (See XSL Rec, fo:region-body description).
- * The Rec allows for acting as if "1" is chosen in
- * these cases, but we will need to be able to change Numeric
- * values in order to do this.
- */
- getFOValidationEventProducer().columnCountErrorOnRegionBodyOverflowScroll(this,
- getName(), getLocator());
- }
- }
-
- /**
- * Return the {@link CommonMarginBlock} instance attached to
- * this instance.
- * @return the {@link CommonMarginBlock} instance
- */
- public CommonMarginBlock getCommonMarginBlock() {
- return commonMarginBlock;
- }
-
- /**
- * Return the value of the <code>column-count<code> property.
- * @return the "column-count" property.
- */
- public int getColumnCount() {
- return columnCount.getValue();
- }
-
- /**
- * Return the value of the <code>column-gap</code> property.
- * @return the "column-gap" property.
- */
- public int getColumnGap() {
- return columnGap.getValue();
- }
-
- /** {@inheritDoc} */
- public Rectangle getViewportRectangle(FODimension reldims) {
- /* Special rules apply to resolving margins in the page context.
- * Contrary to normal margins in this case top and bottom margin
- * are resolved relative to the height. In the property subsystem
- * all margin properties are configured to using BLOCK_WIDTH.
- * That's why we 'cheat' here and setup a context for the height but
- * use the LengthBase.BLOCK_WIDTH.
- * Also the values are resolved relative to the page size
- * and reference orientation.
- */
- PercentBaseContext pageWidthContext
- = getPageWidthContext(LengthBase.CONTAINING_BLOCK_WIDTH);
- PercentBaseContext pageHeightContext
- = getPageHeightContext(LengthBase.CONTAINING_BLOCK_WIDTH);
-
- int start;
- int end;
- // [TBD] WRITING MODE ALERT
- switch (getWritingMode().getEnumValue()) {
- case Constants.EN_RL_TB:
- start = commonMarginBlock.marginRight.getValue(pageWidthContext);
- end = commonMarginBlock.marginLeft.getValue(pageWidthContext);
- break;
- case Constants.EN_TB_LR:
- case Constants.EN_TB_RL:
- start = commonMarginBlock.marginTop.getValue(pageWidthContext);
- end = commonMarginBlock.marginBottom.getValue(pageWidthContext);
- break;
- case Constants.EN_LR_TB:
- default:
- start = commonMarginBlock.marginLeft.getValue(pageWidthContext);
- end = commonMarginBlock.marginRight.getValue(pageWidthContext);
- break;
- }
- int before = commonMarginBlock.spaceBefore.getOptimum(pageHeightContext)
- .getLength().getValue(pageHeightContext);
- int after = commonMarginBlock.spaceAfter.getOptimum(pageHeightContext)
- .getLength().getValue(pageHeightContext);
- return new Rectangle(start, before,
- reldims.ipd - start - end,
- reldims.bpd - before - after);
- }
-
- /** {@inheritDoc} */
- public String getDefaultRegionName() {
- return "xsl-region-body";
- }
-
- /** {@inheritDoc} */
- public String getLocalName() {
- return "region-body";
- }
-
- /**
- * {@inheritDoc}
- * @return {@link org.apache.fop.fo.Constants#FO_REGION_BODY}
- */
- public int getNameId() {
- return FO_REGION_BODY;
- }
- }
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