Application: gvSIG desktop

/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib��ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.sldsupport.version.sld1_0_0;

import java.io.IOException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.filterencoding.FExpression;

import org.gvsig.sldsupport.filterencoding.FilterTags;

import org.gvsig.sldsupport.graphic.SLDFill;

import org.gvsig.sldsupport.util.SLDTags;

import org.gvsig.sldsupport.util.SLDUtils;

import org.gvsig.sldsupport.util.XmlBuilder;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * Implements the Fill element of an SLD implementation specification (version 

 * 1.0.0).<p>

 * The Fill element specifies how the area of the geometry will be filled.

 * There are two types of fills, solid-color and repeated GraphicFill. The repeated 

 * graphic fill is selected only if the GraphicFill element is present. If the Fill

 * element is omitted from its parent element, then no fill will be rendered. The 

 * GraphicFill and CssParameter elements are discussed in conjunction with the 

 * Stroke element in Section 11.1.3. Here, the CssParameter names are �fill� 

 * instead of �stroke� and �fill-opacity� instead of �stroke-opacity�. None of the

 * other CssParameters in Stroke are available for filling and the default value

 * for the fill color in this context is 50% gray (value �#808080�).

 * 

 * @see SLDFill1_0_0

 * @see http://portal.opengeospatial.org/files/?artifact_id=1188

 * 

 * @author pepe vidal salvador - jose.vidal.salvador@iver.es

 */

public class SLDFill1_0_0 extends SLDFill{

        public void parse(XmlPullParser parser,int cuTag, String expressionType)

                        throws IOException, XmlPullParserException, SLDReadException  {

                int currentTag;                

                boolean end = false;

                currentTag = parser.next();

                expressionColor.setLiteral("#808080");

                while (!end)

                {

                        switch(currentTag)

                        {

                        case XmlPullParser.START_TAG:

                                if (parser.getName().compareTo(SLDTags.GRAPHICFILL)==0 ||

                                                parser.getName().compareTo(SLDTags.GRAPHICSTROKE)==0        ) {

                                        SLDGraphic1_0_0 fillGraphic = new SLDGraphic1_0_0();

                                        fillGraphic.parse(parser,currentTag,parser.getName());

                                        setFillGraphic(fillGraphic);

                                }

                                else if (parser.getName().compareTo(SLDTags.CSSPARAMETER)==0) {

                                        if(parser.getAttributeValue("", SLDTags.NAME_ATTR).compareTo(SLDTags.FILL_ATTR)==0) {

                                                FExpression expressionColor = new FExpression();

                                                try {

                                                        expressionColor.parse(parser, parser.nextTag(),parser.getName());

                                                }

                                                catch(XmlPullParserException e) {

                                                        String s = parser.getText().trim();

                                                        expressionColor.setLiteral(s);

                                                }

                                                if (!SLDUtils.isColor(expressionColor.getLiteral()))

                                                        throw new SLDReadException(        new Exception(

                                                                        "Literal should be a color but it's not."));

                                                setExpressionColor(expressionColor);

                                        }

                                        else if(parser.getAttributeValue("", SLDTags.NAME_ATTR).compareTo(SLDTags.FILLOPACITY_ATTR)==0) {

                                                FExpression expressionOpacity =  new FExpression();

                                                try {

                                                        expressionOpacity.parse(parser,parser.nextTag(), parser.getName());

                                                }

                                                catch(XmlPullParserException e) {

                                                        String s = parser.getText().trim();

                                                        expressionOpacity.setLiteral(s);

                                                }

                                                if (!SLDUtils.isANumber(expressionOpacity.getLiteral()))

                                                        throw new SLDReadException(        new Exception(

                                                                        "Literal should be numeric but it's not."));

                                                setExpressionOpacity(expressionOpacity);

                                        }

                                }

                                break;

                        case XmlPullParser.END_TAG:

                                if (parser.getName().compareTo(SLDTags.FILL) == 0)

                                        end = true;

                                break;

                        case XmlPullParser.TEXT:

                                break;

                        }

                        if (!end)

                                currentTag = parser.next();

                }

                parser.require(XmlPullParser.END_TAG, null, SLDTags.FILL);

        }

        public String toXML() {

                XmlBuilder xmlBuilder = new XmlBuilder();

                xmlBuilder.openTag(SLDTags.FILL);

                if (getFillGraphic() != null)

                        xmlBuilder.writeRaw(getFillGraphic().toXML());

                if(getExpressionColor().getLiteral() != null){

                        xmlBuilder.openTag(SLDTags.CSSPARAMETER,SLDTags.NAME_ATTR,SLDTags.FILL_ATTR);

                        xmlBuilder.writeTag(FilterTags.LITERAL, getExpressionColor().getLiteral());

                        xmlBuilder.closeTag();

                }

                if(getExpressionOpacity().getLiteral() != null){

                        xmlBuilder.openTag(SLDTags.CSSPARAMETER,SLDTags.NAME_ATTR,SLDTags.FILLOPACITY_ATTR);

                        xmlBuilder.writeTag(FilterTags.LITERAL,getExpressionOpacity().getLiteral());

                        xmlBuilder.closeTag();

                }

                xmlBuilder.closeTag();

                return xmlBuilder.getXML();

        }

}