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/*
* Copyright 1999-2005 The Apache Software Foundation.
*
* Licensed 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.SimplePercentBaseContext;
/**
* The fo:region-start element.
*/
public class RegionStart extends RegionSE {
/**
* @see org.apache.fop.fo.FONode#FONode(FONode)
*/
public RegionStart(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.pagination.Region#getViewportRectangle(FODimension, SimplePageMaster)
*/
public Rectangle getViewportRectangle (FODimension reldims, SimplePageMaster spm) {
/* Special rules apply to resolving extent as values are resolved relative
* to the page size and reference orientation.
*/
SimplePercentBaseContext pageWidthContext;
SimplePercentBaseContext pageHeightContext;
if (spm.getReferenceOrientation() % 180 == 0) {
pageWidthContext = new SimplePercentBaseContext(null,
LengthBase.CUSTOM_BASE,
spm.getPageWidth().getValue());
pageHeightContext = new SimplePercentBaseContext(null,
LengthBase.CUSTOM_BASE,
spm.getPageHeight().getValue());
} else {
// invert width and height since top left are rotated by 90 (cl or ccl)
pageWidthContext = new SimplePercentBaseContext(null,
LengthBase.CUSTOM_BASE,
spm.getPageHeight().getValue());
pageHeightContext = new SimplePercentBaseContext(null,
LengthBase.CUSTOM_BASE,
spm.getPageWidth().getValue());
}
SimplePercentBaseContext neighbourContext;
Rectangle vpRect;
if (spm.getWritingMode() == EN_LR_TB || spm.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, spm.getWritingMode(), neighbourContext);
return vpRect;
}
/**
* @see org.apache.fop.fo.pagination.Region#getDefaultRegionName()
*/
protected String getDefaultRegionName() {
return "xsl-region-start";
}
/** @see org.apache.fop.fo.FONode#getLocalName() */
public String getLocalName() {
return "region-start";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_REGION_START;
}
}
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