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/*
* $Id: RegionBA.java,v 1.6 2003/03/06 13:42:42 jeremias Exp $
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.fo.pagination;
// Java
import java.awt.Rectangle;
// FOP
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.properties.Precedence;
import org.apache.fop.fo.properties.WritingMode;
import org.apache.fop.fo.FOTreeVisitor;
/**
* Abstract base class for fo:region-before and fo:region-after.
*/
public abstract class RegionBA extends RegionBASE {
private boolean bPrecedence;
/**
* @see org.apache.fop.fo.FONode#FONode(FONode)
*/
protected RegionBA(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.pagination.Region#getPrecedence()
*/
public boolean getPrecedence() {
return bPrecedence;
}
/**
* @see org.apache.fop.fo.FONode#end()
*/
public void end() {
super.end();
bPrecedence =
(this.propertyList.get("precedence").getEnum() == Precedence.TRUE);
}
/**
* Adjust the viewport reference rectangle for a region as a function
* of precedence.
* If precedence is false on a before or after region, its
* inline-progression-dimension is limited by the extent of the start
* and end regions if they are present.
* @param vpRect viewport rectangle
* @param wm writing mode
*/
protected void adjustIPD(Rectangle vpRect, int wm) {
int offset = 0;
Region start = getSiblingRegion(Region.START);
if (start != null) {
offset = start.getExtent();
vpRect.translate(offset, 0);
}
Region end = getSiblingRegion(Region.END);
if (end != null) {
offset += end.getExtent();
}
if (offset > 0) {
if (wm == WritingMode.LR_TB || wm == WritingMode.RL_TB) {
vpRect.width -= offset;
} else {
vpRect.height -= offset;
}
}
}
public void acceptVisitor(FOTreeVisitor fotv) {
fotv.serveRegionBA(this);
}
}
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