/*
* 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.properties;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.expr.PropertyException;
/**
* Custom Maker for page-height / page-width
*
*/
public class PageDimensionMaker extends LengthProperty.Maker {
/**
* Constructor
*
* @param propId the property Id
*/
public PageDimensionMaker(int propId) {
super(propId);
}
/**
* Check the value of the page-width / page-height property.
* Return the default or user-defined fallback in case the value
* was specified as "auto"
* @param subpropId The subproperty id of the property being retrieved.
* Is 0 when retrieving a base property.
* @param propertyList The PropertyList object being built for this FO.
* @param tryInherit true if inherited properties should be examined.
* @param tryDefault true if the default value should be returned.
* @return the property
* @throws PropertyException if a property exception occurs
* @see PropertyMaker#get(int, PropertyList, boolean, boolean)
*/
public Property get(int subpropId, PropertyList propertyList,
boolean tryInherit, boolean tryDefault)
throws PropertyException {
Property p = super.get(0, propertyList, tryInherit, tryDefault);
FObj fo = propertyList.getFObj();
String fallbackValue = (propId == Constants.PR_PAGE_HEIGHT)
? fo.getUserAgent().getPageHeight()
: fo.getUserAgent().getPageWidth();
if (p.getEnum() == Constants.EN_INDEFINITE) {
int otherId = (propId == Constants.PR_PAGE_HEIGHT)
? Constants.PR_PAGE_WIDTH : Constants.PR_PAGE_HEIGHT;
int writingMode = propertyList.get(Constants.PR_WRITING_MODE).getEnum();
int refOrientation = propertyList.get(Constants.PR_REFERENCE_ORIENTATION)
.getNumeric().getValue();
if (propertyList.getExplicit(otherId) != null
&& propertyList.getExplicit(otherId).getEnum() == Constants.EN_INDEFINITE) {
//both set to "indefinite":
//determine which one of the two defines the dimension
//in block-progression-direction, and set the other to
//"auto"
if ((writingMode != Constants.EN_TB_RL
&& (refOrientation == 0
|| refOrientation == 180
|| refOrientation == -180))
|| (writingMode == Constants.EN_TB_RL
&& (refOrientation == 90
|| refOrientation == 270
|| refOrientation == -270))) {
//set page-width to "auto" = use the fallback from FOUserAgent
if (propId == Constants.PR_PAGE_WIDTH) {
Property.log.warn("Both page-width and page-height set to "
+ "\"indefinite\". Forcing page-width to \"auto\"");
return make(propertyList, fallbackValue, fo);
}
} else {
//set page-height to "auto" = use fallback from FOUserAgent
Property.log.warn("Both page-width and page-height set to "
+ "\"indefinite\". Forcing page-height to \"auto\"");
if (propId == Constants.PR_PAGE_HEIGHT) {
return make(propertyList, fallbackValue, fo);
}
}
}
} else if (p.isAuto()) {
return make(propertyList, fallbackValue, fo);
}
return p;
}
}