Library: org.gvsig.sldtools

/*******************************************************************************

 *

 *   gvSIG. Desktop Geographic Information System.

 *  

 *   Copyright (C) 2007-2013 gvSIG Association.

 *  

 *   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 3

 *   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., 51 Franklin Street, Fifth Floor, Boston,

 *   MA  02110-1301, USA.

 *  

 *   For any additional information, do not hesitate to contact us

 *   at info AT gvsig.com, or visit our website www.gvsig.com.

 *   

 *******************************************************************************/

package org.gvsig.sldsupport.impl.sld.parsing;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import org.gvsig.sldsupport.exception.InvalidSLDObjectException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.exception.UnsupportedSLDObjectException;

import org.gvsig.sldsupport.impl.util.SLDUtils;

import org.gvsig.sldsupport.impl.util.XmlBuilder;

import org.gvsig.sldsupport.sld.SLDTags;

import org.gvsig.sldsupport.sld.graphic.SLDGraphicFill;

import org.gvsig.sldsupport.sld.symbol.misc.SLDFill;

import org.gvsig.sldsupport.sld.symbol.misc.SLDSvgCssParameter;

public class FillElement {

    public static void append(SLDFill obj, XmlBuilder xb, String version)

        throws InvalidSLDObjectException, UnsupportedSLDObjectException {

        xb.openTag(SLDTags.FILL);

        // ======================

        if (obj.getFillGraphic() != null) {

            GraphicFillElement.append(new SLDGraphicFill(obj.getFillGraphic()),

                xb, version);

        }

        // =========

        if (obj.getFillColor() != null) {

            SLDSvgCssParameter p = new SLDSvgCssParameter();

            p.setName(SLDTags.FILL_ATTR);

            p.getExpressionList().add(obj.getFillColor());

            SvgCssParameterElement.append(p, xb, version);

        }

        // =========

        if (obj.getOpacity() != null) {

            SLDSvgCssParameter p = new SLDSvgCssParameter();

            p.setName(SLDTags.FILLOPACITY_ATTR);

            p.getExpressionList().add(obj.getOpacity());

            SvgCssParameterElement.append(p, xb, version);

        }

        // ======================

        xb.closeTag();

    }

    public static SLDFill parse(XmlPullParser parser, String version)

        throws XmlPullParserException, IOException, SLDReadException {

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

        int tag = 0;

        SLDFill resp = new SLDFill();

        tag = parser.nextTag();

        String name = parser.getName();

        String txt = null;

        String attName = null;

        while (!(SLDUtils.isStr(name, SLDTags.FILL) && (tag == XmlPullParser.END_TAG))) {

            switch (tag) {

            case XmlPullParser.START_TAG:

                if (SLDUtils.isStr(name, SLDTags.GRAPHICFILL)) {

                    SLDGraphicFill gf =

                        GraphicFillElement.parse(parser, version);

                    /*

                     * SLDFill has a 'fillGraphic' field which is a Graphic,

                     * it does not have a field of FillGraphic type which

                     * has a graphic (we are collapsing an element)

                     */

                    resp.setFillGraphic(gf.getGraphic());

                    break;

                }

                if (SLDUtils.isStr(name, SLDTags.CSSPARAMETER)

                    || SLDUtils.isStr(name, SLDTags.SVGPARAMETER)) {

                    SLDSvgCssParameter sp =

                        SvgCssParameterElement.parse(parser, version);

                    if (SLDUtils.isStr(sp.getName(), SLDTags.FILL_ATTR)) {

                        if (sp.getExpressionList().size() > 0) {

                            // Using first item only

                            resp.setFillColor(sp.getExpressionList().get(0));

                        }

                    } else {

                        if (SLDUtils.isStr(sp.getName(),

                            SLDTags.FILLOPACITY_ATTR)) {

                            if (sp.getExpressionList().size() > 0) {

                                // Using first item only

                                resp.setOpacity(sp.getExpressionList().get(0));

                            }

                        }

                    }

                    break;

                }

                /*

                 * Any other entity causes parsing error

                 */

                throw new SLDReadException(

                    "Bad SLD file. Unexpected entity in fill element: " + name);

            case XmlPullParser.END_TAG:

                break;

            case XmlPullParser.TEXT:

                break;

            }

            tag = parser.getEventType();

            name = parser.getName();

        }

        parser.nextTag();

        return resp;

    }

}