| /* |
| * 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; |
| |
| // FOP |
| import org.apache.fop.fo.FONode; |
| import org.apache.fop.datatypes.FODimension; |
| import org.apache.fop.datatypes.LengthBase; |
| import org.apache.fop.datatypes.PercentBaseContext; |
| |
| /** |
| * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_region-start"> |
| * <code>fo:region-start</code></a> object. |
| */ |
| public class RegionStart extends RegionSE { |
| |
| /** |
| * Create a RegionStart instance that is a child of the |
| * given parent {@link FONode}. |
| * @param parent the {@link FONode} that is to be the parent |
| */ |
| public RegionStart(FONode parent) { |
| super(parent); |
| } |
| |
| /** {@inheritDoc} */ |
| public Rectangle getViewportRectangle (FODimension reldims) { |
| /* Special rules apply to resolving extent as values are resolved relative |
| * to the page size and reference orientation. |
| */ |
| PercentBaseContext pageWidthContext = getPageWidthContext(LengthBase.CUSTOM_BASE); |
| PercentBaseContext pageHeightContext = getPageHeightContext(LengthBase.CUSTOM_BASE); |
| PercentBaseContext neighbourContext; |
| Rectangle vpRect; |
| if (layoutMaster.getWritingMode() == EN_LR_TB |
| || layoutMaster.getWritingMode() == EN_RL_TB) { |
| neighbourContext = pageHeightContext; |
| vpRect = new Rectangle(0, 0, getExtent().getValue(pageWidthContext), reldims.bpd); |
| } else { |
| neighbourContext = pageWidthContext; |
| vpRect = new Rectangle(0, 0, reldims.bpd, getExtent().getValue(pageHeightContext)); |
| } |
| adjustIPD(vpRect, layoutMaster.getWritingMode(), neighbourContext); |
| return vpRect; |
| } |
| |
| /** {@inheritDoc} */ |
| protected String getDefaultRegionName() { |
| return "xsl-region-start"; |
| } |
| |
| /** {@inheritDoc} */ |
| public String getLocalName() { |
| return "region-start"; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @return {@link org.apache.fop.fo.Constants#FO_REGION_START} |
| */ |
| public int getNameId() { |
| return FO_REGION_START; |
| } |
| } |
| |