Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

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

 * MA  02110-1301, USA.

 * 

 */

package org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.impl;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import org.gvsig.compat.print.PrintAttributes;

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.fmap.mapcontext.MapContextLocator;

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

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

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

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.ILineSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.ISimpleLineSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.ArrowDecoratorStyle;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.Line2DOffset;

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;

/**

 * SimpleLineSymbol is the most basic symbol for the representation of line objects.

 * Allows to define the width of the line, the color and the drawn pattern.

 *

 * @author 2005-2008 jaume dominguez faus - jaume.dominguez@iver.es

 * @author 2009-     <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team

 */

public class SimpleLineSymbol extends AbstractLineSymbol implements ISimpleLineSymbol {

        private static final Logger LOG = LoggerFactory.getLogger(SimpleLineSymbol.class);

    public static final String SIMPLE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME = "SimpleLineSymbol";

    private static final String SELECTION_SYMBOL = "symbolForSelection";

        SimpleLineSymbol symbolForSelection;

        private static final GeometryManager geomManager = GeometryLocator.getGeometryManager();

        public SimpleLineSymbol() {

                super();

                setLineWidth(1d);

        }

        public ISymbol getSymbolForSelection() {

                if (symbolForSelection == null) {

                        symbolForSelection = (SimpleLineSymbol) cloneForSelection();                        

                }

                return symbolForSelection;

        }

        public void draw(Graphics2D g, AffineTransform affineTransform,

                        Geometry geom, Feature feature, Cancellable cancel) {

                Geometry geomToDraw = geom.cloneGeometry();

                g.setStroke(getLineStyle().getStroke());

                if (getLineStyle().getOffset() != 0) {

                        double offset = getLineStyle().getOffset();

                        try {

                                geomToDraw =

                                                geomManager.createSurface(Line2DOffset.offsetLine(

                                                                geomToDraw.getShape(), offset), SUBTYPES.GEOM2D);

                        } catch (CreateGeometryException e) {

                                LOG.error("Creating a Surface", e);

                        }

                }

                g.setColor(getColor());        

                g.draw(geomToDraw.getShape(affineTransform));

                ArrowDecoratorStyle arrowDecorator = (ArrowDecoratorStyle) getLineStyle().getArrowDecorator();

                if (arrowDecorator != null) {

                        try {

                                arrowDecorator.draw(g, affineTransform, geomToDraw, feature);

                        } catch (CreateGeometryException e) {

                                LOG.error("Error creating a geometry");

                        }

                }

        }

        public int getOnePointRgb() {

                return getColor().getRGB();

        }

        public void drawInsideRectangle(Graphics2D g,

                        AffineTransform scaleInstance, Rectangle r, PrintAttributes properties) throws SymbolDrawingException {

                g.setColor(getColor());

                g.setStroke(getLineStyle().getStroke());

                super.drawInsideRectangle(g, scaleInstance, r, properties);

        }

        public void setLineWidth(double width) {

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

        }

        public double getLineWidth() {

                return getLineStyle().getLineWidth();

        }

        public Object clone() throws CloneNotSupportedException {

                SimpleLineSymbol copy = (SimpleLineSymbol) super.clone();

                if (symbolForSelection != null) {

                        copy.symbolForSelection = (SimpleLineSymbol) symbolForSelection

                                        .clone();

                }

                return copy;

        }

    public void loadFromState(PersistentState state) throws PersistenceException {

        // Set parent style properties

        super.loadFromState(state);

        this.symbolForSelection = (SimpleLineSymbol) state.get(SELECTION_SYMBOL);

    }

    public void saveToState(PersistentState state) throws PersistenceException {

        // Save parent fill symbol properties

        super.saveToState(state);

        // Save own properties

        if (this.symbolForSelection != null){

            state.set(SELECTION_SYMBOL, this.getSymbolForSelection());

        }

    }

        public static class RegisterPersistence implements Callable {

                public Object call() throws Exception {

                        PersistenceManager manager = ToolsLocator.getPersistenceManager();

                        if( manager.getDefinition(SIMPLE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME)==null ) {

                                DynStruct definition = manager.addDefinition(

                                                SimpleLineSymbol.class,

                                                SIMPLE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                                                SIMPLE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME+" Persistence definition",

                                                null, 

                                                null

                                );

                                // Extend the LineSymbol base definition

                                definition.extend(manager.getDefinition(LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME));

                definition.addDynFieldObject(SELECTION_SYMBOL).setClassOfValue(SimpleLineSymbol.class);

                        }

                        return Boolean.TRUE;

                }

        }

        public static class RegisterSymbol implements Callable {

                public Object call() throws Exception {

                        int[] shapeTypes;

                        SymbolManager manager = MapContextLocator.getSymbolManager();

                shapeTypes = new int[] { Geometry.TYPES.CURVE, Geometry.TYPES.ARC,

                        Geometry.TYPES.ELLIPTICARC, Geometry.TYPES.MULTICURVE };

                manager.registerSymbol(ILineSymbol.SYMBOL_NAME,

                    shapeTypes,

                    SimpleLineSymbol.class);

                        return Boolean.TRUE;

                }

        }

}