| gvSIG desktop 1

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

 *

 * Copyright (C) 2005 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.symbology.fmap.symbols;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import javax.print.attribute.PrintRequestAttributeSet;

import org.apache.batik.ext.awt.geom.PathLength;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.cit.gvsig.fmap.core.FPoint2D;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.SymbologyFactory;

import com.iver.cit.gvsig.fmap.core.styles.ILineStyle;

import com.iver.cit.gvsig.fmap.core.symbols.AbstractLineSymbol;

import com.iver.cit.gvsig.fmap.core.symbols.IMarkerSymbol;

import com.iver.cit.gvsig.fmap.core.symbols.ISymbol;

import com.iver.utiles.XMLEntity;

import com.iver.utiles.swing.threads.Cancellable;

/**

 * MarkerLineSymbol allows to use any symbol defined as an image to draw a lineal object.

 * The line will be painted as a run of symbols through the path defined by the line.

 *

 * @author   jaume dominguez faus - jaume.dominguez@iver.es

 */

public class MarkerLineSymbol extends AbstractLineSymbol {

        private IMarkerSymbol marker;

        private MarkerLineSymbol symSelect;

        private double separation = 5;

        private double cartographicSeparation;

        private double width;

        {

                marker = SymbologyFactory.createDefaultMarkerSymbol();

                marker.setSize(5);

        }

        public void setLineWidth(double width) {

                this.width = width;

                getLineStyle().setLineWidth((float) width);

        }

        public double getLineWidth() {

                return width;

        }

        public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp, Cancellable cancel) {

                PathLength pl = new PathLength(shp);

                float myLineLength = pl.lengthOfPath(); // length without the first and last arrow

                float separation = (float) cartographicSeparation;

                FPoint2D p = new FPoint2D(pl.pointAtLength(0));

                double lineWidth = getLineStyle().getLineWidth();

                marker.setSize(lineWidth);

                marker.draw(g, affineTransform, p, null);

                float length = (float) (separation + lineWidth);

                while ((cancel==null || !cancel.isCanceled()) && length < myLineLength) {

                        p = new FPoint2D(pl.pointAtLength(length));

                        marker.draw(g, affineTransform, p, null);

                        length += separation + lineWidth;

                }

        }

        /**

         * Gets the separation between the marker symbols that are used to draw the line.

         *

         * @return separation

         */

        public double getSeparation() {

                return separation;

        }

        public ISymbol getSymbolForSelection() {

                if (symSelect == null) {

                        symSelect = (MarkerLineSymbol) SymbologyFactory.

                        createSymbolFromXML(getXMLEntity(), "selection derived symbol");

                        symSelect.setMarker((IMarkerSymbol) symSelect.getMarker()

                                        .getSymbolForSelection());

                }

                return symSelect;

        }

        public Color getColor() {

                return marker.getColor();

        }

        public void setLineColor(Color color) {

                marker.setColor(color);

        }

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className", getClassName());

                xml.putProperty("isShapeVisible", isShapeVisible());

                xml.putProperty("desc", getDescription());

                xml.putProperty("unit", getUnit());

                xml.putProperty("referenceSystem", getReferenceSystem());

                xml.putProperty("separation", getSeparation());

                XMLEntity xmlMarker = marker.getXMLEntity();

                xmlMarker.putProperty("id", "marker");

                xml.addChild(xmlMarker);

                setLineWidth(getLineWidth()); // not a joke;

                XMLEntity xmlLineStyle = getLineStyle().getXMLEntity();

                xmlLineStyle.putProperty("id", "lineStyle");

                xml.addChild(xmlLineStyle);

                return xml;

        }

        public void setXMLEntity(XMLEntity xml) {

                setIsShapeVisible(xml.getBooleanProperty("isShapeVisible"));

                setDescription(xml.getStringProperty("desc"));

                setSeparation(xml.getDoubleProperty("separation"));

                setUnit(xml.getIntProperty("unit"));

                setReferenceSystem(xml.getIntProperty("referenceSystem"));

                marker = (IMarkerSymbol) SymbologyFactory.

                createSymbolFromXML(xml.firstChild("id", "marker"), "theMarker");

                setLineStyle((ILineStyle) SymbologyFactory.

                                createStyleFromXML(xml.firstChild("id", "lineStyle"), "theLineStyle"));

                width = getLineStyle().getLineWidth();

        }

        /**

         * Sets the separation between the marker symbols that compose the line

         *

         * @param separation

         */

        public void setSeparation(double separation) {

                this.separation = separation;

                this.cartographicSeparation = separation;

        }

        public String getClassName() {

                return getClass().getName();

        }

        public void print(Graphics2D g, AffineTransform at, FShape shape,

                        PrintRequestAttributeSet properties) throws ReadDriverException {

                // TODO Auto-generated method stub

                throw new Error("Not yet implemented!");

        }

        /**

         * Returns the marker symbol that compose the line

         *

         * @return marker IMarkerSymbol

         */

        public IMarkerSymbol getMarker() {

                return marker;

        }

        /**

         * Sets the marker symbol that compose the line

         *

         * @param marker IMarkerSymbol

         */

        public void setMarker(IMarkerSymbol marker) {

                this.marker = marker;

        }

        @Override

        public void setCartographicSize(double cartographicSize, FShape shp) {

                double oldLineWidth = getLineWidth();

                super.setCartographicSize(cartographicSize, shp);

                double newLineWidth = getLineWidth();

                double scale = newLineWidth/oldLineWidth;

                cartographicSeparation = separation * scale;

        }

        @Override

        public void setUnit(int unitIndex) {

                super.setUnit(unitIndex);

                marker.setUnit(unitIndex);

        }

        @Override

        public void setReferenceSystem(int system) {

                super.setReferenceSystem(system);

                marker.setReferenceSystem(system);

        }

}