/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53177 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.graphics.sld;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.deegree.io.datastore.PropertyPathResolvingException;
import org.deegree.model.filterencoding.Expression;
import org.deegree.model.filterencoding.Filter;
import org.deegree.model.filterencoding.FilterTools;
import org.deegree.ogcbase.PropertyPath;
/**
*
*
*
* @version $Revision: 1.6 $
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author: poth $
*
* @version 1.0. $Revision: 1.6 $, $Date: 2006/11/07 10:59:27 $
*
* @since 2.0
*/
public class StyleUtils {
/**
* returns a list of all @see PropertyPath's required by the passed UserStyles
*
* @param styles
* @param scaleDen
* @return
* @throws PropertyPathResolvingException
*/
public static List<PropertyPath> extractRequiredProperties( List<UserStyle> styles,
double scaleDen )
throws PropertyPathResolvingException {
List<PropertyPath> pp = new ArrayList<PropertyPath>();
for ( int i = 0; i < styles.size(); i++ ) {
FeatureTypeStyle[] fts = styles.get( i ).getFeatureTypeStyles();
for ( int j = 0; j < fts.length; j++ ) {
Rule[] rules = fts[j].getRules();
for ( int k = 0; k < rules.length; k++ ) {
double minScale = rules[k].getMinScaleDenominator();
double maxScale = rules[k].getMaxScaleDenominator();
if ( minScale <= scaleDen && maxScale > scaleDen ) {
Filter filter = rules[k].getFilter();
List list = FilterTools.extractPropertyPaths( filter );
pp.addAll( list );
Symbolizer[] sym = rules[k].getSymbolizers();
for ( int d = 0; d < sym.length; d++ ) {
if ( sym[d] instanceof PointSymbolizer ) {
pp = extractPPFromPointSymbolizer( (PointSymbolizer) sym[d], pp );
} else if ( sym[d] instanceof LineSymbolizer ) {
pp = extractPPFromLineSymbolizer( (LineSymbolizer) sym[d], pp );
} else if ( sym[d] instanceof PolygonSymbolizer ) {
pp = extractPPFromPolygonSymbolizer( (PolygonSymbolizer) sym[d], pp );
} else if ( sym[d] instanceof TextSymbolizer ) {
pp = extractPPFromTextSymbolizer( (TextSymbolizer) sym[d], pp );
}
}
}
}
}
}
List<PropertyPath> tmp = new ArrayList<PropertyPath>( pp.size() );
for ( int i = 0; i < pp.size(); i++ ) {
if ( !tmp.contains( pp.get( i ) ) ) {
tmp.add( pp.get( i ) );
}
}
return tmp;
}
/**
*
* @param symbolizer
* @param pp
* @return
* @throws PropertyPathResolvingException
*/
private static List<PropertyPath> extractPPFromTextSymbolizer( TextSymbolizer symbolizer,
List<PropertyPath> pp )
throws PropertyPathResolvingException {
Map css = null;
if ( symbolizer.getFill() != null ) {
css = symbolizer.getFill().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
}
css = symbolizer.getFont().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
if ( symbolizer.getGeometry() != null ) {
pp.add( symbolizer.getGeometry().getPropertyPath() );
}
Halo halo = symbolizer.getHalo();
ParameterValueType pvt = null;
if ( halo != null ) {
pvt = halo.getRadius();
pp = extractPPFromParamValueType( pvt, pp );
css = halo.getFill().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
css = halo.getStroke().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
}
pvt = symbolizer.getLabel();
pp = extractPPFromParamValueType( pvt, pp );
LinePlacement lp = symbolizer.getLabelPlacement().getLinePlacement();
if ( lp != null ) {
pvt = lp.getGap();
pp = extractPPFromParamValueType( pvt, pp );
pvt = lp.getLineWidth();
pp = extractPPFromParamValueType( pvt, pp );
pvt = lp.getPerpendicularOffset();
pp = extractPPFromParamValueType( pvt, pp );
}
return pp;
}
/**
*
* @param symbolizer
* @param pp
* @return
* @throws PropertyPathResolvingException
*/
private static List<PropertyPath> extractPPFromPolygonSymbolizer( PolygonSymbolizer symbolizer,
List<PropertyPath> pp )
throws PropertyPathResolvingException {
Map css = null;
if ( symbolizer != null ) {
if ( symbolizer.getFill() != null ) {
css = symbolizer.getFill().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
}
if ( symbolizer.getGeometry() != null ) {
pp.add( symbolizer.getGeometry().getPropertyPath() );
}
if ( symbolizer.getStroke() != null ) {
css = symbolizer.getStroke().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
}
}
return pp;
}
/**
*
* @param symbolizer
* @param pp
* @return
* @throws PropertyPathResolvingException
*/
private static List<PropertyPath> extractPPFromLineSymbolizer( LineSymbolizer symbolizer,
List<PropertyPath> pp )
throws PropertyPathResolvingException {
if ( symbolizer.getGeometry() != null ) {
pp.add( symbolizer.getGeometry().getPropertyPath() );
}
Map css = symbolizer.getStroke().getCssParameters();
pp = extractPPFromCssParameter( css, pp );
return pp;
}
/**
*
* @param symbolizer
* @param pp
* @return
* @throws PropertyPathResolvingException
*/
private static List<PropertyPath> extractPPFromPointSymbolizer( PointSymbolizer symbolizer,
List<PropertyPath> pp )
throws PropertyPathResolvingException {
Graphic graphic = symbolizer.getGraphic();
if ( graphic != null ) {
if ( graphic.getOpacity() != null ) {
pp = extractPPFromParamValueType( graphic.getOpacity(), pp );
}
if ( graphic.getRotation() != null ) {
pp = extractPPFromParamValueType( graphic.getRotation(), pp );
}
if ( graphic.getSize() != null ) {
pp = extractPPFromParamValueType( graphic.getSize(), pp );
}
if ( symbolizer.getGeometry() != null ) {
pp.add( symbolizer.getGeometry().getPropertyPath() );
}
}
return pp;
}
private static List<PropertyPath> extractPPFromCssParameter( Map css, List<PropertyPath> pp )
throws PropertyPathResolvingException {
if ( css != null ) {
Iterator iter = css.values().iterator();
while ( iter.hasNext() ) {
ParameterValueType pvt = ( (CssParameter) iter.next() ).getValue();
pp = extractPPFromParamValueType( pvt, pp );
}
}
return pp;
}
private static List<PropertyPath> extractPPFromParamValueType( ParameterValueType pvt,
List<PropertyPath> pp )
throws PropertyPathResolvingException {
if ( pvt != null ) {
Object[] components = pvt.getComponents();
for ( int i = 0; i < components.length; i++ ) {
if ( components[i] instanceof Expression ) {
pp = FilterTools.extractPropertyPaths( (Expression) components[i], pp );
}
}
}
return pp;
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: StyleUtils.java,v $
Revision 1.6 2006/11/07 10:59:27 poth
bug fix - null checking for ParameterValueTypes and CSSParameters
Revision 1.5 2006/10/11 07:59:14 poth
implementation completed (Point Symbolizer)
Revision 1.4 2006/10/11 06:55:08 poth
bug fix
Revision 1.3 2006/10/09 15:55:40 poth
bug fix - null check for polygon symbolizer
Revision 1.2 2006/10/02 10:01:18 poth
bug fix determining properties required by a style
Revision 1.1 2006/09/26 12:44:34 poth
initial check in
********************************************************************** */