Application: gvSIG desktop » gvSIG legends: base legends

/* 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

 */

/* CVS MESSAGES:

*

* $Id: DotDensityFillSymbol.java 13953 2007-09-21 12:26:04Z jaume $

* $Log$

* Revision 1.8  2007-09-21 12:25:32  jaume

* cancellation support extended down to the IGeometry and ISymbol level

*

* Revision 1.7  2007/09/18 14:50:31  caballero

* Leyendas sobre el Layout

*

* Revision 1.6  2007/03/26 14:24:24  jaume

* IPrintable refactored

*

* Revision 1.5  2007/03/09 11:20:56  jaume

* Advanced symbology (start committing)

*

* Revision 1.3.2.4  2007/02/21 16:09:02  jaume

* *** empty log message ***

*

* Revision 1.3.2.3  2007/02/16 10:54:12  jaume

* multilayer splitted to multilayerline, multilayermarker,and  multilayerfill

*

* Revision 1.3.2.2  2007/02/15 16:23:44  jaume

* *** empty log message ***

*

* Revision 1.3.2.1  2007/02/09 07:47:04  jaume

* Isymbol moved

*

* Revision 1.3  2007/01/12 10:08:26  jaume

* *** empty log message ***

*

* Revision 1.2  2007/01/10 16:39:41  jaume

* ISymbol now belongs to com.iver.cit.gvsig.fmap.core.symbols package

*

* Revision 1.1  2007/01/10 16:31:36  jaume

* *** empty log message ***

*

* Revision 1.4  2006/11/14 11:10:27  jaume

* *** empty log message ***

*

* Revision 1.3  2006/11/13 09:15:23  jaume

* javadoc and some clean-up

*

* Revision 1.2  2006/11/09 18:39:05  jaume

* *** empty log message ***

*

* Revision 1.1  2006/11/09 10:22:50  jaume

* *** empty log message ***

*

*

*/

package org.gvsig.symbology.fmap.symbols;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import java.util.Random;

import javax.print.attribute.PrintRequestAttributeSet;

import org.gvsig.compat.print.PrintAttributes;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolDrawingException;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.impl.AbstractFillSymbol;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.task.Cancellable;

import org.gvsig.tools.util.Callable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * <p>

 * Symbol that draws a set of points within a polygon. The amount of points is

 * defined by the field dotCount.<br>

 * </p>

 * <p>

 * This symbol only draws the points. The outline and the fill of the polygon is

 * handled by a SimpleFillSymboll where a DotDensityFillSymbol should be

 * embedded.<br>

 * </p>

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

 *

 */

public class DotDensityFillSymbol extends AbstractFillSymbol {

    private static final Logger logger = LoggerFactory.getLogger(DotDensityFillSymbol.class);

    public static final String

    DOT_DENSITY_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME =

        "DOT_DENSITY_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME";

        private int  dotCount;

        private double dotSize;

        private double dotSpacing;

        private Color dotColor = Color.BLACK;

        private boolean fixedPlacement;

        private PrintRequestAttributeSet properties;

        public DotDensityFillSymbol() {

                super();

        }

        public ISymbol getSymbolForSelection() {

                return this; // the selection color is applied in the SimpleFillSymbol

        }

    public void draw(Graphics2D g, AffineTransform atr,

        Geometry theGeom, Feature f, Cancellable cancel) {

        try {

            Geometry clo_geo = theGeom.cloneGeometry();

            clo_geo.transform(atr);

            int maxIntentos = 35;

            int width = clo_geo.getBounds().width;

            int height = clo_geo.getBounds().height;

            int minx = clo_geo.getBounds().x;

            int miny = clo_geo.getBounds().y;

            Random random = new Random();

            g.setClip(clo_geo.getShape());

            g.setColor(getDotColor());

            g.setBackground(null);

            int size = (int) dotSize;

            for (int i = 0; (cancel==null || !cancel.isCanceled()) && i < dotCount; i++) {

                    int x,y;

                    int intentos = 0;

                    /* Introducimos este bucle para procurar que los puntos

                     * queden dentro del shape. Le ponemos adem?s un

                     * numero m?ximo de intentos para evitar las posibilidad de

                     * un bucle infinito o excesivamente reiterativo.

                    */

                    do{

                            x = (int) Math.abs(random.nextDouble() * width);

                            y = (int) Math.abs(random.nextDouble() * height);

                            x = x + minx;

                            y = y + miny;

                            intentos++;

                    } while (intentos<maxIntentos && !clo_geo.contains(x, y));

                    g.fillRect(x, y, size, size);

            }

            g.setClip(null);

        } catch (Exception e) {

            logger.warn("An error has been produced drawing density points for : "+theGeom.toString());

        }

        }

    public void saveToState(PersistentState state) throws PersistenceException {

        super.saveToState(state);

        // color

        Color c = getDotColor();

        if (c == null) {

            c = Color.BLACK;

        }

        state.set("dotColor", c);

        state.set("dotCount", dotCount);

        state.set("dotSize", dotSize);

        state.set("dotSpacing", dotSpacing);

    }

        public int getSymbolType() {

                return Geometry.TYPES.SURFACE;

        }

    public void drawInsideRectangle(Graphics2D g,

        AffineTransform scaleInstance,

        Rectangle r,

        PrintAttributes properties) throws SymbolDrawingException {

                int x = r.x;

                int y = r.y;

                int width = r.width;

                int height= r.height;

                int size = height / 5;

                g.setColor(getDotColor());

                g.setBackground(null);

                g.fillRect((int) (x+width*0.2), (int) (y+height*0.2), size, size);

                g.fillRect((int) (x+width*0.25), (int) (y+height*0.7), size, size);

                g.fillRect((int) (x+width*0.35), (int) (y+height*0.5), size, size);

                g.fillRect((int) (x+width*0.6), (int) (y+height*0.1), size, size);

                g.fillRect((int) (x+width*0.7), (int) (y+height*0.8), size, size);

                g.fillRect((int) (x+width*0.8), (int) (y+height*0.3), size, size);

                g.fillRect((int) (x+width*0.9), (int) (y+height*0.6), size, size);

        }

    public void loadFromState(PersistentState state)

        throws PersistenceException {

        super.loadFromState(state);

        Object obj_col = state.get("dotColor");

        this.setDotColor((Color) obj_col);

        this.setDotCount(state.getInt("dotCount"));

        this.setDotSize(state.getDouble("dotSize"));

        this.setDotSpacing(state.getDouble("dotSpacing"));

    }

        /**

         * @return

         * @uml.property  name="dotCount"

         */

        public int getDotCount() {

                return dotCount;

        }

        /**

         * @param dotCount

         * @uml.property  name="dotCount"

         */

        public void setDotCount(int dotCount) {

                this.dotCount = dotCount;

        }

        /**

         * @return

         * @uml.property  name="dotSize"

         */

        public double getDotSize() {

                return dotSize;

        }

        public void setDotSize(double dotSize) {

                this.dotSize = dotSize;

        }

        /**

         * @return

         * @uml.property  name="dotSpacing"

         */

        public double getDotSpacing() {

                return dotSpacing;

        }

        /**

         * @param dotSpacing

         * @uml.property  name="dotSpacing"

         */

        public void setDotSpacing(double dotSpacing) {

                this.dotSpacing = dotSpacing;

        }

        public Color getDotColor() {

                return dotColor;

        }

        public void setDotColor(Color dotColor) {

                this.dotColor = dotColor;

        }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.mapcontext.rendering.symbols.IPrintable#print(java.awt.Graphics2D, java.awt.geom.AffineTransform, org.gvsig.fmap.geom.Geometry, org.gvsig.compat.print.PrintAttributes)

     */

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

        PrintAttributes prop) {

        // this.properties.=prop;

        draw(g, at, shape, null, null);

        // this.properties=null;

    }

    public static class RegisterPersistence implements Callable {

        public Object call() throws Exception {

            PersistenceManager manager = ToolsLocator.getPersistenceManager();

            if( manager.getDefinition(

                DOT_DENSITY_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME)==null ) {

                DynStruct definition = manager.addDefinition(

                    DotDensityFillSymbol.class,

                        DOT_DENSITY_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                        DOT_DENSITY_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME +

                        " Persistence definition",

                        null,

                        null

                );

                // Extend the Symbol base definition

                definition.extend(manager.getDefinition(

                    AbstractFillSymbol.FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME));

                definition.addDynFieldObject("dotColor").setMandatory(true)

                .setClassOfValue(Color.class);

                definition.addDynFieldInt("dotCount").setMandatory(true);

                definition.addDynFieldDouble("dotSize").setMandatory(true);

                definition.addDynFieldDouble("dotSpacing").setMandatory(true);

            }

            return Boolean.TRUE;

        }

    }

}