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 java.util.List;

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.SLDAnchorPoint;

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

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

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

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

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

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

public class GraphicElement {

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

        throws InvalidSLDObjectException, UnsupportedSLDObjectException {

        xb.openTag(SLDTags.GRAPHIC);

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

        List<SLDGraphicStackElement> list = obj.getElementStack();

        for (int i = 0; i < list.size(); i++) {

            if (list.get(i) instanceof SLDExternalGraphic) {

                ExternalGraphicElement.append((SLDExternalGraphic) list.get(i),

                    xb, version);

            } else {

                if (list.get(i) instanceof SLDMark) {

                    MarkElement.append((SLDMark) list.get(i), xb, version);

                }

            }

        }

        // ======================================== op sz rot

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

            ParameterValueElement.append(SLDTags.OPACITY, obj.getOpacity(), xb,

                version);

        }

        // =========

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

            ParameterValueElement.append(SLDTags.SIZE, obj.getSize(), xb,

                version);

        }

        // =========

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

            ParameterValueElement.append(SLDTags.ROTATION, obj.getRotation(),

                xb, version);

        }

        // ======================================== v. 1.1.0, anch, displ

        if ((version != null)

            && (version.compareToIgnoreCase(SLDUtils.VERSION_1_1_0) == 0)) {

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

                AnchorPointElement.append(obj.getAnchor(), xb, version);

            }

            // =========

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

                DisplacementElement.append(obj.getDisplacement(), xb, version);

            }

        }

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

        xb.closeTag();

    }

    public static SLDGraphic parse(XmlPullParser parser, String version)

        throws XmlPullParserException, IOException, SLDReadException {

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

        int tag = 0;

        SLDGraphic resp = new SLDGraphic();

        tag = parser.nextTag();

        String name = parser.getName();

        String txt = null;

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

            switch (tag) {

            case XmlPullParser.START_TAG:

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

                    SLDExternalGraphic ext =

                        ExternalGraphicElement.parse(parser, version);

                    resp.getElementStack().add(ext);

                    break;

                }

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

                    SLDMark mk = MarkElement.parse(parser, version);

                    resp.getElementStack().add(mk);

                    break;

                }

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

                    SLDParameterValue pv =

                        ParameterValueElement.parse(parser, version);

                    resp.setOpacity(pv);

                    break;

                }

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

                    SLDParameterValue pv =

                        ParameterValueElement.parse(parser, version);

                    resp.setSize(pv);

                    break;

                }

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

                    SLDParameterValue pv =

                        ParameterValueElement.parse(parser, version);

                    resp.setRotation(pv);

                    break;

                }

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

                    SLDAnchorPoint ap =

                        AnchorPointElement.parse(parser, version);

                    resp.setAnchor(ap);

                    break;

                }

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

                    SLDDisplacement di =

                        DisplacementElement.parse(parser, version);

                    resp.setDisplacement(di);

                    break;

                }

                /*

                 * Any other entity causes parsing error

                 */

                throw new SLDReadException(

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

            case XmlPullParser.END_TAG:

                break;

            case XmlPullParser.TEXT:

                break;

            }

            tag = parser.getEventType();

            name = parser.getName();

        }

        parser.nextTag();

        /*

         * Set default mark if no mark/graphic was set

         */

        if (resp.getElementStack().size() == 0) {

            resp.setDefaultMark();

        }

        return resp;

    }

}